/* roulang page: index */
:root {
            --color-bg: #0D1114;
            --color-bg-secondary: #141A1F;
            --color-bg-elevated: #1A2128;
            --color-red: #E63329;
            --color-red-hover: #C42B22;
            --color-accent: #C8FF00;
            --color-accent-hover: #B0E600;
            --color-warm-bg: #F5F3EF;
            --color-text-on-dark: #F5F3EF;
            --color-text-muted-on-dark: #B8C0C6;
            --color-text-on-light: #161A1F;
            --color-text-muted-on-light: #5A6670;
            --color-border-dark: rgba(255, 255, 255, 0.08);
            --color-border-light: rgba(22, 26, 31, 0.12);
            --radius-card: 16px;
            --radius-sm: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 44px rgba(0, 0, 0, 0.5);
            --transition-base: 0.2s ease;
            --transition-slow: 0.35s ease;
            --font-heading: "Source Han Sans SC", "思源黑体", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --font-body: "Source Han Sans SC", "思源黑体", "PingFang SC", "苹方", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --font-mono: "SF Mono", "Cascadia Code", "Roboto Mono", "Consolas", monospace;
            --header-height: 68px;
            --container-max: 1280px;
            --gap-col: 24px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text-on-dark);
            background-color: var(--color-bg);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }

        input {
            font-family: inherit;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            background-color: var(--color-bg);
            border-bottom: 1px solid var(--color-border-dark);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 24px;
        }

        .logo {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 22px;
            line-height: 1.2;
            color: var(--color-text-on-dark);
            letter-spacing: -0.5px;
            white-space: nowrap;
        }

        .logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background-color: var(--color-accent);
            color: var(--color-bg);
            border-radius: 8px;
            font-size: 16px;
            font-weight: 900;
            letter-spacing: -1px;
            flex-shrink: 0;
        }

        .logo .logo-text {
            color: var(--color-text-on-dark);
        }

        .logo .logo-text .logo-accent {
            color: var(--color-accent);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .main-nav a {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-muted-on-dark);
            border-radius: var(--radius-pill);
            transition: color var(--transition-base), background-color var(--transition-base);
            white-space: nowrap;
        }

        .main-nav a:hover,
        .main-nav a:focus-visible {
            color: var(--color-text-on-dark);
            background-color: rgba(255, 255, 255, 0.06);
        }

        .main-nav a.active {
            color: var(--color-accent);
            font-weight: 700;
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 2px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            color: var(--color-text-muted-on-dark);
            background-color: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--color-border-dark);
            transition: all var(--transition-base);
            font-size: 18px;
            line-height: 1;
        }

        .search-btn:hover {
            color: var(--color-accent);
            border-color: var(--color-accent);
            background-color: rgba(200, 255, 0, 0.06);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            font-size: 15px;
            font-weight: 700;
            border-radius: var(--radius-pill);
            transition: all var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }

        .btn-primary {
            background-color: var(--color-accent);
            color: var(--color-bg);
            border: 1px solid var(--color-accent);
        }

        .btn-primary:hover {
            background-color: var(--color-red);
            border-color: var(--color-red);
            color: #ffffff;
            transform: translateY(-1px);
            box-shadow: 0 8px 22px rgba(230, 51, 41, 0.35);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--color-text-on-dark);
            border: 1px solid rgba(255, 255, 255, 0.28);
        }

        .btn-secondary:hover {
            border-color: var(--color-accent);
            color: #ffffff;
            background-color: rgba(200, 255, 0, 0.04);
        }

        .btn-sm {
            padding: 9px 18px;
            font-size: 14px;
        }

        .btn-subscribe {
            background-color: var(--color-red);
            color: #ffffff;
            border: 1px solid var(--color-red);
            padding: 9px 20px;
            font-size: 14px;
            font-weight: 700;
            border-radius: var(--radius-pill);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .btn-subscribe:hover {
            background-color: var(--color-red-hover);
            border-color: var(--color-red-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(230, 51, 41, 0.3);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            padding: 8px;
            border-radius: 8px;
            border: 1px solid var(--color-border-dark);
            background-color: rgba(255, 255, 255, 0.05);
            transition: all var(--transition-base);
        }

        .hamburger span {
            display: block;
            width: 100%;
            height: 2px;
            background-color: var(--color-text-on-dark);
            border-radius: 2px;
            transition: all var(--transition-base);
        }

        .hamburger:hover {
            border-color: var(--color-accent);
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background-color: var(--color-bg);
            z-index: 999;
            padding: 24px;
            overflow-y: auto;
            border-top: 1px solid var(--color-border-dark);
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .mobile-menu nav a {
            display: block;
            padding: 14px 18px;
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-on-dark);
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            border: 1px solid transparent;
        }

        .mobile-menu nav a:hover,
        .mobile-menu nav a.active {
            background-color: rgba(255, 255, 255, 0.05);
            border-color: var(--color-border-dark);
            color: var(--color-accent);
        }

        .mobile-menu .mobile-subscribe {
            margin-top: 16px;
            width: 100%;
            padding: 14px;
            font-size: 16px;
            background-color: var(--color-red);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 700;
            text-align: center;
        }

        .mobile-menu .mobile-subscribe:hover {
            background-color: var(--color-red-hover);
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 78vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            background-color: var(--color-bg);
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }

        .hero-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: center 30%;
        }

        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(13, 17, 20, 0.93) 20%, rgba(13, 17, 20, 0.72) 55%, rgba(13, 17, 20, 0.45) 100%);
            z-index: 1;
        }

        .hero-bg::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, var(--color-bg) 0%, transparent 30%);
            z-index: 2;
        }

        .hero .container {
            position: relative;
            z-index: 3;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            padding-top: 60px;
            padding-bottom: 60px;
        }

        .hero-content {
            max-width: 640px;
            flex-shrink: 0;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1.2px;
            text-transform: uppercase;
            color: var(--color-accent);
            background-color: rgba(200, 255, 0, 0.08);
            border: 1px solid rgba(200, 255, 0, 0.25);
            border-radius: var(--radius-pill);
            margin-bottom: 18px;
        }

        .hero-tag .dot {
            width: 7px;
            height: 7px;
            background-color: var(--color-accent);
            border-radius: 50%;
            animation: pulse-dot 1.6s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.4;
                transform: scale(0.7);
            }
        }

        .hero h1 {
            font-family: var(--font-heading);
            font-size: clamp(32px, 4.2vw, 48px);
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -0.8px;
            margin-bottom: 20px;
            color: var(--color-text-on-dark);
        }

        .hero h1 .highlight {
            color: var(--color-accent);
        }

        .hero-subtitle {
            font-size: 18px;
            line-height: 1.7;
            color: var(--color-text-muted-on-dark);
            margin-bottom: 32px;
            max-width: 520px;
        }

        .hero-cta {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .hero-data-card {
            flex-shrink: 0;
            width: 300px;
            background-color: rgba(13, 17, 20, 0.88);
            border: 1px solid rgba(200, 255, 0, 0.3);
            border-radius: var(--radius-card);
            padding: 20px 22px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(200, 255, 0, 0.12) inset;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
        }

        .hero-data-card .data-card-label {
            font-size: 11px;
            font-weight: 700;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-data-card .data-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .hero-data-card .data-row:last-child {
            border-bottom: none;
        }

        .hero-data-card .data-rank {
            font-family: var(--font-mono);
            font-size: 14px;
            font-weight: 700;
            color: var(--color-text-muted-on-dark);
            width: 28px;
        }

        .hero-data-card .data-rank.top-1 {
            color: var(--color-accent);
        }

        .hero-data-card .data-rank.top-2 {
            color: #E8E8E8;
        }

        .hero-data-card .data-rank.top-3 {
            color: #D4A574;
        }

        .hero-data-card .data-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-on-dark);
            flex: 1;
            margin-left: 8px;
        }

        .hero-data-card .data-value {
            font-family: var(--font-mono);
            font-size: 18px;
            font-weight: 800;
            color: var(--color-text-on-dark);
        }

        /* Ticker */
        .ticker-section {
            background-color: var(--color-bg-secondary);
            border-bottom: 1px solid var(--color-border-dark);
            overflow: hidden;
            position: relative;
        }

        .ticker-wrapper {
            display: flex;
            align-items: center;
            overflow: hidden;
            white-space: nowrap;
            position: relative;
            padding: 12px 0;
        }

        .ticker-label {
            flex-shrink: 0;
            z-index: 2;
            background-color: var(--color-red);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 1px;
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            margin-right: 20px;
            margin-left: 24px;
            text-transform: uppercase;
        }

        .ticker-track {
            display: flex;
            gap: 0;
            animation: ticker-scroll 35s linear infinite;
            min-width: max-content;
        }

        .ticker-track:hover {
            animation-play-state: paused;
        }

        .ticker-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 0 24px;
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            border-right: 1px solid var(--color-border-dark);
            flex-shrink: 0;
        }

        .ticker-item .ticker-time {
            font-family: var(--font-mono);
            font-size: 12px;
            font-weight: 600;
            color: var(--color-accent);
            flex-shrink: 0;
        }

        .ticker-item .ticker-tag {
            font-size: 11px;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 4px;
            background-color: rgba(230, 51, 41, 0.15);
            color: #ff6b61;
            flex-shrink: 0;
            letter-spacing: 0.5px;
        }

        .ticker-item .ticker-tag.green {
            background-color: rgba(200, 255, 0, 0.1);
            color: var(--color-accent);
        }

        @keyframes ticker-scroll {
            0% {
                transform: translateX(0);
            }
            100% {
                transform: translateX(-50%);
            }
        }

        /* Sections General */
        .section {
            padding: 64px 0;
        }

        .section-dark {
            background-color: var(--color-bg);
        }

        .section-alt {
            background-color: var(--color-bg-secondary);
        }

        .section-light {
            background-color: var(--color-warm-bg);
            color: var(--color-text-on-light);
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 36px;
            flex-wrap: wrap;
        }

        .section-header h2 {
            font-family: var(--font-heading);
            font-size: clamp(24px, 2.6vw, 32px);
            font-weight: 900;
            line-height: 1.25;
            letter-spacing: -0.5px;
            color: inherit;
        }

        .section-header .section-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-muted-on-dark);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--transition-base);
        }

        .section-header .section-link:hover {
            color: var(--color-accent);
        }

        .section-light .section-header .section-link {
            color: var(--color-text-muted-on-light);
        }

        .section-light .section-header .section-link:hover {
            color: var(--color-red);
        }

        /* Calendar Cards */
        .calendar-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .calendar-card {
            background-color: var(--color-bg-elevated);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .calendar-card:hover {
            transform: translateY(-4px);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card-hover);
        }

        .calendar-card .card-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: var(--color-bg-secondary);
        }

        .calendar-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .calendar-card:hover .card-img img {
            transform: scale(1.05);
        }

        .calendar-card .card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }

        .calendar-card .card-matchup {
            font-family: var(--font-heading);
            font-size: 16px;
            font-weight: 800;
            color: var(--color-text-on-dark);
            letter-spacing: -0.3px;
            line-height: 1.3;
        }

        .calendar-card .card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .calendar-card .card-meta .meta-item {
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .calendar-card .card-meta .meta-item .icon {
            font-size: 14px;
        }

        .calendar-card .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 11px;
            font-weight: 700;
            letter-spacing: 0.8px;
            padding: 4px 10px;
            border-radius: var(--radius-pill);
            background-color: rgba(200, 255, 0, 0.1);
            color: var(--color-accent);
            border: 1px solid rgba(200, 255, 0, 0.2);
            align-self: flex-start;
            text-transform: uppercase;
        }

        .calendar-card .card-tag.red {
            background-color: rgba(230, 51, 41, 0.12);
            color: #ff6b61;
            border-color: rgba(230, 51, 41, 0.22);
        }

        /* Rankings */
        .rankings-wrapper {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .ranking-panel {
            background-color: var(--color-bg-elevated);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            padding: 20px 22px;
            transition: all var(--transition-base);
        }

        .ranking-panel:hover {
            border-color: rgba(200, 255, 0, 0.35);
            box-shadow: var(--shadow-card-hover);
        }

        .ranking-panel .panel-title {
            font-size: 15px;
            font-weight: 800;
            color: var(--color-text-on-dark);
            letter-spacing: -0.2px;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .ranking-panel .panel-title .panel-badge {
            font-size: 11px;
            font-weight: 700;
            color: var(--color-accent);
            background-color: rgba(200, 255, 0, 0.08);
            padding: 3px 10px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.5px;
        }

        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .ranking-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            transition: background-color var(--transition-base);
            border: 1px solid transparent;
        }

        .ranking-item:hover {
            background-color: rgba(255, 255, 255, 0.04);
        }

        .ranking-item.top-1 {
            background-color: rgba(200, 255, 0, 0.06);
            border-color: rgba(200, 255, 0, 0.22);
        }

        .ranking-item.top-2 {
            background-color: rgba(255, 255, 255, 0.04);
            border-color: rgba(255, 255, 255, 0.1);
        }

        .ranking-item.top-3 {
            background-color: rgba(212, 165, 116, 0.05);
            border-color: rgba(212, 165, 116, 0.18);
        }

        .ranking-item .rank-num {
            font-family: var(--font-mono);
            font-size: 15px;
            font-weight: 800;
            color: var(--color-text-muted-on-dark);
            width: 26px;
            flex-shrink: 0;
            text-align: center;
        }

        .ranking-item.top-1 .rank-num {
            color: var(--color-accent);
        }

        .ranking-item.top-2 .rank-num {
            color: #E8E8E8;
        }

        .ranking-item.top-3 .rank-num {
            color: #D4A574;
        }

        .ranking-item .rank-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-on-dark);
            flex: 1;
        }

        .ranking-item .rank-stat {
            font-family: var(--font-mono);
            font-size: 15px;
            font-weight: 700;
            color: var(--color-text-muted-on-dark);
        }

        .ranking-item .rank-trend {
            font-family: var(--font-mono);
            font-size: 11px;
            font-weight: 700;
            color: var(--color-accent);
        }

        .ranking-item .rank-trend.down {
            color: #ff6b61;
        }

        /* Featured Article */
        .featured-article {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 32px;
            align-items: center;
            background-color: var(--color-bg-elevated);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .featured-article:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .featured-article .featured-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: var(--color-bg-secondary);
            min-height: 100%;
        }

        .featured-article .featured-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .featured-article:hover .featured-img img {
            transform: scale(1.04);
        }

        .featured-article .featured-body {
            padding: 28px 32px 28px 8px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .featured-article .featured-tag {
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.8px;
            color: var(--color-accent);
            text-transform: uppercase;
        }

        .featured-article .featured-title {
            font-family: var(--font-heading);
            font-size: clamp(20px, 2vw, 26px);
            font-weight: 900;
            line-height: 1.3;
            color: var(--color-text-on-dark);
            letter-spacing: -0.3px;
        }

        .featured-article .featured-excerpt {
            font-size: 15px;
            color: var(--color-text-muted-on-dark);
            line-height: 1.7;
        }

        .featured-article .featured-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
        }

        /* Brand Intro */
        .brand-intro {
            background-color: var(--color-warm-bg);
            color: var(--color-text-on-light);
            padding: 64px 0;
        }

        .brand-intro .container {
            max-width: 900px;
        }

        .brand-intro h2 {
            font-family: var(--font-heading);
            font-size: clamp(22px, 2.4vw, 30px);
            font-weight: 900;
            color: var(--color-text-on-light);
            margin-bottom: 20px;
            letter-spacing: -0.4px;
        }

        .brand-intro p {
            font-size: 16px;
            line-height: 1.9;
            color: var(--color-text-muted-on-light);
            margin-bottom: 16px;
        }

        .brand-intro p:last-child {
            margin-bottom: 0;
        }

        .brand-intro .highlight-text {
            color: var(--color-red);
            font-weight: 700;
        }

        /* Star Watch Cards */
        .star-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .star-card {
            display: flex;
            gap: 20px;
            background-color: var(--color-bg-elevated);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            padding: 18px;
            transition: all var(--transition-base);
            align-items: center;
        }

        .star-card:hover {
            transform: translateY(-3px);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card-hover);
        }

        .star-card .star-img {
            width: 110px;
            min-width: 110px;
            aspect-ratio: 1 / 1;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background-color: var(--color-bg-secondary);
            flex-shrink: 0;
        }

        .star-card .star-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .star-card:hover .star-img img {
            transform: scale(1.06);
        }

        .star-card .star-body {
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
            min-width: 0;
        }

        .star-card .star-name {
            font-size: 17px;
            font-weight: 800;
            color: var(--color-text-on-dark);
            letter-spacing: -0.2px;
        }

        .star-card .star-desc {
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .star-card .star-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }

        .star-card .star-tag {
            font-size: 11px;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: var(--radius-pill);
            background-color: rgba(200, 255, 0, 0.08);
            color: var(--color-accent);
            border: 1px solid rgba(200, 255, 0, 0.16);
        }

        .star-card .star-tag.red {
            background-color: rgba(230, 51, 41, 0.1);
            color: #ff6b61;
            border-color: rgba(230, 51, 41, 0.2);
        }

        /* Gear Lab */
        .gear-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .gear-card {
            background-color: var(--color-bg-elevated);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .gear-card:hover {
            transform: translateY(-4px);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card-hover);
        }

        .gear-card .gear-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: var(--color-bg-secondary);
        }

        .gear-card .gear-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .gear-card:hover .gear-img img {
            transform: scale(1.05);
        }

        .gear-card .gear-body {
            padding: 20px 22px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }

        .gear-card .gear-name {
            font-size: 17px;
            font-weight: 800;
            color: var(--color-text-on-dark);
        }

        .gear-card .gear-verdict {
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            line-height: 1.65;
        }

        .gear-card .gear-score {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-family: var(--font-mono);
            font-size: 20px;
            font-weight: 900;
            color: var(--color-accent);
            align-self: flex-start;
            margin-top: 4px;
        }

        /* Tactical Videos */
        .video-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .video-card {
            background-color: var(--color-bg-elevated);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition-base);
            cursor: pointer;
        }

        .video-card:hover {
            transform: translateY(-4px);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card-hover);
        }

        .video-card .video-thumb {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: var(--color-bg-secondary);
        }

        .video-card .video-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .video-card:hover .video-thumb img {
            transform: scale(1.05);
        }

        .video-card .video-thumb::after {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(13, 17, 20, 0.35);
            transition: background var(--transition-base);
        }

        .video-card:hover .video-thumb::after {
            background: rgba(13, 17, 20, 0.2);
        }

        .video-card .play-btn {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            z-index: 2;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background-color: rgba(200, 255, 0, 0.92);
            color: var(--color-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            transition: all var(--transition-base);
            pointer-events: none;
        }

        .video-card:hover .play-btn {
            background-color: var(--color-red);
            color: #fff;
            transform: translate(-50%, -50%) scale(1.08);
        }

        .video-card .video-body {
            padding: 16px 18px 18px;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .video-card .video-title {
            font-size: 15px;
            font-weight: 800;
            color: var(--color-text-on-dark);
            line-height: 1.35;
        }

        .video-card .video-meta {
            font-size: 12px;
            color: var(--color-text-muted-on-dark);
        }

        /* Youth Academy */
        .youth-banner {
            display: grid;
            grid-template-columns: 0.8fr 2.2fr;
            gap: 32px;
            align-items: center;
            background-color: var(--color-bg-secondary);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            padding: 32px;
            transition: all var(--transition-base);
        }

        .youth-banner:hover {
            border-color: rgba(200, 255, 0, 0.3);
        }

        .youth-banner .youth-info h2 {
            font-family: var(--font-heading);
            font-size: clamp(20px, 2vw, 28px);
            font-weight: 900;
            color: var(--color-text-on-dark);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .youth-banner .youth-info p {
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            line-height: 1.7;
        }

        .youth-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .youth-mini-card {
            background-color: var(--color-bg-elevated);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .youth-mini-card:hover {
            transform: translateY(-3px);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card);
        }

        .youth-mini-card .youth-mini-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: var(--color-bg-secondary);
        }

        .youth-mini-card .youth-mini-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .youth-mini-card:hover .youth-mini-img img {
            transform: scale(1.06);
        }

        .youth-mini-card .youth-mini-body {
            padding: 12px 14px;
        }

        .youth-mini-card .youth-mini-title {
            font-size: 13px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            line-height: 1.4;
        }

        /* Poll */
        .poll-section {
            background-color: var(--color-warm-bg);
            color: var(--color-text-on-light);
        }

        .poll-wrapper {
            max-width: 640px;
            margin: 0 auto;
            background-color: #ffffff;
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-card);
            padding: 32px 36px;
            box-shadow: 0 8px 28px rgba(22, 26, 31, 0.08);
        }

        .poll-wrapper h2 {
            font-family: var(--font-heading);
            font-size: clamp(20px, 2vw, 26px);
            font-weight: 900;
            color: var(--color-text-on-light);
            margin-bottom: 20px;
            letter-spacing: -0.3px;
        }

        .poll-options {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-bottom: 20px;
        }

        .poll-option {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all var(--transition-base);
            background-color: #fff;
        }

        .poll-option:hover {
            border-color: var(--color-red);
            background-color: rgba(230, 51, 41, 0.03);
        }

        .poll-option input[type="radio"] {
            appearance: none;
            -webkit-appearance: none;
            width: 20px;
            height: 20px;
            border: 2px solid #c0c5ca;
            border-radius: 50%;
            cursor: pointer;
            position: relative;
            transition: all var(--transition-base);
            flex-shrink: 0;
        }

        .poll-option input[type="radio"]:checked {
            border-color: var(--color-red);
        }

        .poll-option input[type="radio"]:checked::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 10px;
            height: 10px;
            background-color: var(--color-red);
            border-radius: 50%;
        }

        .poll-option input[type="radio"]:focus-visible {
            outline: 2px solid var(--color-red);
            outline-offset: 2px;
        }

        .poll-option .option-label {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-on-light);
            flex: 1;
        }

        .poll-option .option-count {
            font-family: var(--font-mono);
            font-size: 13px;
            font-weight: 700;
            color: var(--color-text-muted-on-light);
        }

        .poll-submit {
            width: 100%;
            padding: 14px;
            font-size: 16px;
            font-weight: 800;
            background-color: var(--color-red);
            color: #fff;
            border-radius: var(--radius-pill);
            transition: all var(--transition-base);
            letter-spacing: 0.5px;
        }

        .poll-submit:hover {
            background-color: var(--color-red-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(230, 51, 41, 0.3);
        }

        /* Industry News */
        .industry-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .industry-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 18px 0;
            border-bottom: 1px solid var(--color-border-dark);
            transition: all var(--transition-base);
            cursor: pointer;
        }

        .industry-item:hover {
            padding-left: 8px;
            border-bottom-color: var(--color-accent);
        }

        .industry-item:last-child {
            border-bottom: none;
        }

        .industry-item .industry-date {
            font-family: var(--font-mono);
            font-size: 13px;
            font-weight: 700;
            color: var(--color-accent);
            min-width: 72px;
            flex-shrink: 0;
            padding-top: 2px;
        }

        .industry-item .industry-text {
            font-size: 15px;
            color: var(--color-text-muted-on-dark);
            line-height: 1.75;
            flex: 1;
        }

        .industry-item .industry-text strong {
            color: var(--color-text-on-dark);
            font-weight: 700;
        }

        /* Timeline */
        .timeline-scroll {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            padding-bottom: 16px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
        }

        .timeline-scroll::-webkit-scrollbar {
            height: 6px;
        }

        .timeline-scroll::-webkit-scrollbar-track {
            background: transparent;
        }

        .timeline-scroll::-webkit-scrollbar-thumb {
            background-color: rgba(255, 255, 255, 0.15);
            border-radius: 3px;
        }

        .timeline-card {
            min-width: 280px;
            max-width: 300px;
            scroll-snap-align: start;
            background-color: var(--color-bg-elevated);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition-base);
            flex-shrink: 0;
        }

        .timeline-card:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }

        .timeline-card .timeline-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: var(--color-bg-secondary);
        }

        .timeline-card .timeline-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .timeline-card .timeline-body {
            padding: 14px 16px 16px;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .timeline-card .timeline-year {
            font-family: var(--font-mono);
            font-size: 15px;
            font-weight: 900;
            color: var(--color-accent);
        }

        .timeline-card .timeline-event {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            line-height: 1.45;
        }

        .timeline-card .timeline-desc {
            font-size: 12px;
            color: var(--color-text-muted-on-dark);
            line-height: 1.6;
        }

        /* FAQ */
        .faq-section {
            background-color: var(--color-warm-bg);
            color: var(--color-text-on-light);
        }

        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background-color: #ffffff;
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: rgba(230, 51, 41, 0.3);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text-on-light);
            text-align: left;
            transition: all var(--transition-base);
            border: none;
            background: none;
            cursor: pointer;
            position: relative;
        }

        .faq-question::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 28px;
            background-color: var(--color-red);
            border-radius: 2px;
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background-color: rgba(22, 26, 31, 0.05);
            transition: transform var(--transition-base);
            font-size: 16px;
            color: var(--color-text-muted-on-light);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background-color: rgba(230, 51, 41, 0.1);
            color: var(--color-red);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow);
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--color-text-muted-on-light);
            line-height: 1.8;
            padding-bottom: 18px;
            border-top: 1px solid var(--color-border-light);
            padding-top: 14px;
        }

        /* Newsletter CTA */
        .newsletter-cta {
            background-color: var(--color-bg);
            border-top: 1px solid var(--color-border-dark);
            border-bottom: 1px solid var(--color-border-dark);
        }

        .newsletter-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            padding: 40px 0;
        }

        .newsletter-inner .newsletter-info h2 {
            font-family: var(--font-heading);
            font-size: clamp(20px, 2vw, 26px);
            font-weight: 900;
            color: var(--color-text-on-dark);
            margin-bottom: 6px;
            letter-spacing: -0.3px;
        }

        .newsletter-inner .newsletter-info p {
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
        }

        .newsletter-form {
            display: flex;
            gap: 10px;
            flex: 1;
            max-width: 480px;
            min-width: 280px;
        }

        .newsletter-form input[type="email"] {
            flex: 1;
            padding: 13px 20px;
            font-size: 15px;
            color: var(--color-text-on-dark);
            background-color: var(--color-bg-elevated);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-pill);
            transition: all var(--transition-base);
        }

        .newsletter-form input[type="email"]::placeholder {
            color: var(--color-text-muted-on-dark);
        }

        .newsletter-form input[type="email"]:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(200, 255, 0, 0.1);
            outline: none;
        }

        .newsletter-form .btn {
            flex-shrink: 0;
        }

        .newsletter-form .form-error {
            font-size: 13px;
            color: #ff6b61;
            display: none;
            margin-top: 6px;
        }

        .newsletter-form.has-error .form-error {
            display: block;
        }

        /* About / Media */
        .about-media-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .about-media-card {
            background-color: var(--color-bg-elevated);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            transition: all var(--transition-base);
        }

        .about-media-card:hover {
            border-color: rgba(200, 255, 0, 0.25);
        }

        .about-media-card h3 {
            font-size: 17px;
            font-weight: 800;
            color: var(--color-text-on-dark);
            margin-bottom: 12px;
            letter-spacing: -0.2px;
        }

        .about-media-card p {
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            line-height: 1.75;
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-bg);
            border-top: 1px solid var(--color-border-dark);
            padding: 48px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid var(--color-border-dark);
        }

        .footer-brand .footer-logo {
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 900;
            color: var(--color-text-on-dark);
            letter-spacing: -0.4px;
            margin-bottom: 12px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-brand .footer-logo .logo-accent {
            color: var(--color-accent);
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
            line-height: 1.7;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 800;
            color: var(--color-text-on-dark);
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul a {
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
            transition: color var(--transition-base);
        }

        .footer-col ul a:hover {
            color: var(--color-accent);
        }

        .footer-contact p {
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
            margin-bottom: 6px;
            line-height: 1.7;
        }

        .footer-bottom {
            padding: 18px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--color-text-muted-on-dark);
        }

        .footer-bottom .footer-links {
            display: flex;
            align-items: center;
            gap: 18px;
        }

        .footer-bottom .footer-links a {
            color: var(--color-text-muted-on-dark);
            font-size: 12px;
            transition: color var(--transition-base);
        }

        .footer-bottom .footer-links a:hover {
            color: var(--color-accent);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .main-nav {
                gap: 0;
            }
            .main-nav a {
                padding: 8px 10px;
                font-size: 14px;
            }
            .calendar-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .rankings-wrapper {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .star-grid {
                grid-template-columns: 1fr;
            }
            .video-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .youth-banner {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .youth-cards {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 60px;
                --gap-col: 16px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .main-nav {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .header-actions .btn-subscribe {
                display: none;
            }
            .hero {
                min-height: 55vh;
            }
            .hero .container {
                flex-direction: column;
                align-items: flex-start;
                gap: 28px;
                padding-top: 36px;
                padding-bottom: 36px;
            }
            .hero-content {
                max-width: 100%;
            }
            .hero h1 {
                font-size: clamp(26px, 6vw, 34px);
            }
            .hero-data-card {
                width: 100%;
                max-width: 300px;
            }
            .section {
                padding: 40px 0;
            }
            .section-header {
                margin-bottom: 24px;
            }
            .calendar-grid {
                grid-template-columns: 1fr;
            }
            .featured-article {
                grid-template-columns: 1fr;
                gap: 0;
            }
            .featured-article .featured-body {
                padding: 20px 20px 24px;
            }
            .gear-grid {
                grid-template-columns: 1fr;
            }
            .video-grid {
                grid-template-columns: 1fr;
            }
            .youth-cards {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .youth-banner {
                padding: 20px;
            }
            .about-media-grid {
                grid-template-columns: 1fr;
            }
            .newsletter-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .newsletter-form {
                width: 100%;
                max-width: 100%;
                flex-direction: column;
            }
            .newsletter-form input[type="email"] {
                width: 100%;
            }
            .newsletter-form .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .timeline-card {
                min-width: 240px;
                max-width: 260px;
            }
            .poll-wrapper {
                padding: 24px 20px;
            }
            .star-card .star-img {
                width: 80px;
                min-width: 80px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --header-height: 56px;
            }
            body {
                font-size: 15px;
            }
            .logo {
                font-size: 18px;
            }
            .logo .logo-mark {
                width: 28px;
                height: 28px;
                font-size: 13px;
            }
            .hero h1 {
                font-size: clamp(22px, 5.5vw, 28px);
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-cta {
                gap: 10px;
            }
            .btn {
                padding: 11px 20px;
                font-size: 14px;
            }
            .section-header h2 {
                font-size: clamp(20px, 5vw, 24px);
            }
            .ranking-item {
                padding: 8px 10px;
            }
            .ranking-item .rank-name {
                font-size: 13px;
            }
            .star-card {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .star-card .star-img {
                width: 100%;
                min-width: 100%;
                aspect-ratio: 16 / 9;
            }
            .ticker-label {
                margin-left: 12px;
                font-size: 10px;
                padding: 4px 10px;
            }
            .ticker-item {
                padding: 0 16px;
                font-size: 12px;
            }
            .calendar-card .card-matchup {
                font-size: 14px;
            }
            .featured-article .featured-title {
                font-size: 18px;
            }
            .gear-card .gear-body,
            .video-card .video-body {
                padding: 14px 16px;
            }
            .poll-wrapper {
                padding: 20px 16px;
            }
            .faq-question {
                font-size: 14px;
                padding: 16px 16px 16px 20px;
            }
            .faq-answer p {
                font-size: 13px;
                padding-left: 0;
                padding-right: 0;
            }
            .newsletter-inner {
                padding: 28px 0;
            }
            .about-media-card {
                padding: 18px 20px;
            }
            .footer-grid {
                gap: 16px;
            }
        }

/* roulang page: category1 */
:root {
            --color-bg: #0D1114;
            --color-bg-secondary: #141A1F;
            --color-bg-elevated: #1A2128;
            --color-red: #E63329;
            --color-red-hover: #C42B22;
            --color-accent: #C8FF00;
            --color-accent-hover: #B0E600;
            --color-warm-bg: #F5F3EF;
            --color-text-on-dark: #F5F3EF;
            --color-text-muted-on-dark: #B8C0C6;
            --color-text-on-light: #161A1F;
            --color-text-muted-on-light: #5A6670;
            --color-border-dark: rgba(255, 255, 255, 0.08);
            --color-border-light: rgba(22, 26, 31, 0.12);
            --radius-card: 16px;
            --radius-sm: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 44px rgba(0, 0, 0, 0.5);
            --transition-base: 0.2s ease;
            --transition-slow: 0.35s ease;
            --font-heading: "Source Han Sans SC", "思源黑体", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --font-body: "Source Han Sans SC", "思源黑体", "PingFang SC", "苹方", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --font-mono: "SF Mono", "Cascadia Code", "Roboto Mono", "Consolas", monospace;
            --header-height: 68px;
            --container-max: 1280px;
            --gap-col: 24px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text-on-dark);
            background-color: var(--color-bg);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }
        input {
            font-family: inherit;
            border: none;
            background: none;
        }
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            background-color: var(--color-bg);
            border-bottom: 1px solid var(--color-border-dark);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 24px;
        }
        .logo {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 22px;
            line-height: 1.2;
            color: var(--color-text-on-dark);
            letter-spacing: -0.5px;
            white-space: nowrap;
        }
        .logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background-color: var(--color-accent);
            color: var(--color-bg);
            border-radius: 8px;
            font-size: 16px;
            font-weight: 900;
            letter-spacing: -1px;
            flex-shrink: 0;
        }
        .logo .logo-text {
            color: var(--color-text-on-dark);
        }
        .logo .logo-text .logo-accent {
            color: var(--color-accent);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }
        .main-nav a {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-muted-on-dark);
            border-radius: var(--radius-pill);
            transition: color var(--transition-base), background-color var(--transition-base);
            white-space: nowrap;
        }
        .main-nav a:hover,
        .main-nav a:focus-visible {
            color: var(--color-text-on-dark);
            background-color: rgba(255, 255, 255, 0.06);
        }
        .main-nav a.active {
            color: var(--color-accent);
            font-weight: 700;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .header-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background-color: var(--color-bg-secondary);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            min-width: 160px;
            transition: border-color var(--transition-base);
        }
        .header-search input {
            color: var(--color-text-on-dark);
            font-size: 14px;
            width: 100%;
        }
        .header-search input::placeholder {
            color: var(--color-text-muted-on-dark);
            opacity: 0.7;
        }
        .header-search:focus-within {
            border-color: var(--color-accent);
        }
        .header-search svg {
            flex-shrink: 0;
            color: var(--color-text-muted-on-dark);
        }
        .btn-subscribe {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 700;
            background-color: var(--color-accent);
            color: var(--color-bg);
            border-radius: var(--radius-pill);
            transition: background-color var(--transition-base), color var(--transition-base);
            white-space: nowrap;
        }
        .btn-subscribe:hover,
        .btn-subscribe:focus-visible {
            background-color: var(--color-red);
            color: #fff;
        }
        .mobile-toggle {
            display: none;
            flex-shrink: 0;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            border-radius: var(--radius-sm);
            transition: background-color var(--transition-base);
        }
        .mobile-toggle:hover {
            background-color: rgba(255, 255, 255, 0.06);
        }
        .mobile-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--color-text-on-dark);
            border-radius: 2px;
            transition: transform var(--transition-base), opacity var(--transition-base);
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            background-color: var(--color-bg-secondary);
            border-bottom: 1px solid var(--color-border-dark);
            padding: 12px 0;
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            flex-wrap: wrap;
        }
        .breadcrumb-nav a {
            color: var(--color-text-muted-on-dark);
            transition: color var(--transition-base);
        }
        .breadcrumb-nav a:hover {
            color: var(--color-accent);
        }
        .breadcrumb-nav .separator {
            color: var(--color-border-dark);
        }
        .breadcrumb-nav .current {
            color: var(--color-text-on-dark);
            font-weight: 600;
        }

        /* Category Header */
        .category-header {
            background-color: var(--color-bg-secondary);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--color-border-dark);
            position: relative;
            overflow: hidden;
        }
        .category-header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-red), transparent);
        }
        .category-header .container {
            position: relative;
            z-index: 1;
        }
        .category-header .cat-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            background-color: rgba(200, 255, 0, 0.08);
            border: 1px solid rgba(200, 255, 0, 0.2);
            border-radius: var(--radius-pill);
            margin-bottom: 16px;
        }
        .category-header h1 {
            font-family: var(--font-heading);
            font-size: 36px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            color: var(--color-text-on-dark);
            letter-spacing: -0.5px;
        }
        .category-header .cat-description {
            font-size: 17px;
            line-height: 1.8;
            color: var(--color-text-muted-on-dark);
            max-width: 800px;
            margin-bottom: 0;
        }

        /* Filter Bar */
        .filter-bar {
            background-color: var(--color-bg);
            border-bottom: 1px solid var(--color-border-dark);
            padding: 16px 0;
        }
        .filter-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .filter-tags {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-muted-on-dark);
            background-color: var(--color-bg-secondary);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-pill);
            cursor: pointer;
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .filter-tag:hover {
            color: var(--color-text-on-dark);
            border-color: rgba(255, 255, 255, 0.2);
        }
        .filter-tag.active {
            color: var(--color-bg);
            background-color: var(--color-accent);
            border-color: var(--color-accent);
            font-weight: 700;
        }
        .filter-sort {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
        }
        .filter-sort select {
            background-color: var(--color-bg-secondary);
            color: var(--color-text-on-dark);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-sm);
            padding: 6px 12px;
            font-size: 14px;
            cursor: pointer;
            transition: border-color var(--transition-base);
        }
        .filter-sort select:focus {
            border-color: var(--color-accent);
        }

        /* Article Cards Section */
        .article-section {
            padding: 48px 0 56px;
            background-color: var(--color-bg);
        }
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .article-card {
            background-color: var(--color-bg-secondary);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-accent);
        }
        .article-card .card-image {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: var(--color-bg-elevated);
        }
        .article-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .article-card:hover .card-image img {
            transform: scale(1.05);
        }
        .article-card .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            display: inline-flex;
            align-items: center;
            padding: 4px 10px;
            font-size: 12px;
            font-weight: 700;
            color: #fff;
            background-color: var(--color-red);
            border-radius: var(--radius-sm);
            letter-spacing: 0.5px;
        }
        .article-card .card-tag.tag-accent {
            background-color: var(--color-accent);
            color: var(--color-bg);
        }
        .article-card .card-body {
            padding: 20px 18px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .article-card .card-title {
            font-family: var(--font-heading);
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--color-text-on-dark);
            transition: color var(--transition-base);
        }
        .article-card:hover .card-title {
            color: var(--color-accent);
        }
        .article-card .card-excerpt {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-muted-on-dark);
            margin-bottom: 16px;
            flex: 1;
        }
        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
            border-top: 1px solid var(--color-border-dark);
            padding-top: 12px;
            flex-shrink: 0;
        }
        .article-card .card-meta .meta-dot {
            width: 3px;
            height: 3px;
            background-color: var(--color-border-dark);
            border-radius: 50%;
        }
        .article-card .card-meta .read-count {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-left: auto;
        }

        /* Topic Entry */
        .topic-entry {
            padding: 48px 0;
            background-color: var(--color-bg-secondary);
            border-top: 1px solid var(--color-border-dark);
            border-bottom: 1px solid var(--color-border-dark);
        }
        .topic-entry .section-heading {
            font-family: var(--font-heading);
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 24px;
            color: var(--color-text-on-dark);
        }
        .topic-entry .section-heading .heading-highlight {
            color: var(--color-accent);
        }
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .topic-card {
            display: flex;
            gap: 16px;
            background-color: var(--color-bg-elevated);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            padding: 16px;
            transition: border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
            align-items: center;
        }
        .topic-card:hover {
            border-color: var(--color-accent);
            transform: translateY(-3px);
            box-shadow: var(--shadow-card);
        }
        .topic-card .topic-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            flex-shrink: 0;
            background-color: rgba(200, 255, 0, 0.1);
            border: 1px solid rgba(200, 255, 0, 0.2);
            border-radius: var(--radius-sm);
            color: var(--color-accent);
            font-size: 20px;
            font-weight: 800;
        }
        .topic-card .topic-info h5 {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin-bottom: 4px;
        }
        .topic-card .topic-info p {
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* Data Tip */
        .data-tip-section {
            padding: 48px 0;
            background-color: var(--color-bg);
        }
        .data-tip-card {
            background-color: var(--color-bg-secondary);
            border: 1px solid var(--color-accent);
            border-radius: var(--radius-card);
            padding: 28px 30px;
            display: flex;
            gap: 24px;
            align-items: flex-start;
            box-shadow: 0 4px 20px rgba(200, 255, 0, 0.08);
        }
        .data-tip-card .tip-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            flex-shrink: 0;
            background-color: rgba(200, 255, 0, 0.12);
            border-radius: var(--radius-sm);
            color: var(--color-accent);
            font-size: 24px;
            font-weight: 800;
        }
        .data-tip-card .tip-content h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-accent);
            margin-bottom: 10px;
            font-family: var(--font-heading);
        }
        .data-tip-card .tip-content p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--color-text-muted-on-dark);
            margin-bottom: 0;
        }

        /* Subscribe CTA */
        .subscribe-cta {
            padding: 40px 0;
            background-color: var(--color-bg-secondary);
            border-top: 1px solid var(--color-border-dark);
        }
        .subscribe-box {
            background-color: var(--color-bg-elevated);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            padding: 32px 36px;
            display: flex;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
        }
        .subscribe-box .subscribe-text {
            flex: 1;
            min-width: 240px;
        }
        .subscribe-box .subscribe-text h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin-bottom: 6px;
            font-family: var(--font-heading);
        }
        .subscribe-box .subscribe-text p {
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            margin-bottom: 0;
        }
        .subscribe-form {
            display: flex;
            gap: 10px;
            flex-shrink: 0;
            min-width: 280px;
        }
        .subscribe-form input {
            flex: 1;
            background-color: var(--color-bg);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-pill);
            padding: 10px 18px;
            font-size: 14px;
            color: var(--color-text-on-dark);
            transition: border-color var(--transition-base);
            min-width: 200px;
        }
        .subscribe-form input:focus {
            border-color: var(--color-accent);
        }
        .subscribe-form input::placeholder {
            color: var(--color-text-muted-on-dark);
            opacity: 0.7;
        }
        .subscribe-form .btn-submit {
            display: inline-flex;
            align-items: center;
            padding: 10px 24px;
            font-size: 14px;
            font-weight: 700;
            background-color: var(--color-accent);
            color: var(--color-bg);
            border-radius: var(--radius-pill);
            transition: background-color var(--transition-base), color var(--transition-base);
            white-space: nowrap;
        }
        .subscribe-form .btn-submit:hover {
            background-color: var(--color-red);
            color: #fff;
        }
        .subscribe-form .error-msg {
            width: 100%;
            font-size: 13px;
            color: var(--color-red);
            margin-top: 6px;
            display: none;
        }

        /* Footer */
        .site-footer {
            background-color: #0A0D10;
            border-top: 1px solid var(--color-border-dark);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        .footer-brand .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-heading);
            font-size: 22px;
            font-weight: 800;
            color: var(--color-text-on-dark);
            margin-bottom: 14px;
        }
        .footer-brand .footer-logo .logo-accent {
            color: var(--color-accent);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-muted-on-dark);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin-bottom: 14px;
            font-family: var(--font-heading);
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            transition: color var(--transition-base);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent);
        }
        .footer-contact p {
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
            margin-bottom: 6px;
            line-height: 1.6;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 20px;
            border-top: 1px solid var(--color-border-dark);
            flex-wrap: wrap;
        }
        .footer-bottom span {
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
        }
        .footer-links {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
        }
        .footer-links a {
            color: var(--color-text-muted-on-dark);
            transition: color var(--transition-base);
        }
        .footer-links a:hover {
            color: var(--color-accent);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .main-nav a {
                padding: 8px 10px;
                font-size: 13px;
            }
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
            .footer-contact {
                grid-column: span 3;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                flex-direction: column;
                background-color: var(--color-bg);
                border-bottom: 1px solid var(--color-border-dark);
                padding: 16px 24px;
                gap: 4px;
                box-shadow: var(--shadow-card);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                display: flex;
                padding: 12px 16px;
                font-size: 15px;
                width: 100%;
                justify-content: flex-start;
            }
            .main-nav a.active::after {
                display: none;
            }
            .main-nav a.active {
                background-color: rgba(200, 255, 0, 0.08);
                border-radius: var(--radius-sm);
            }
            .mobile-toggle {
                display: flex;
            }
            .header-search {
                display: none;
            }
            .category-header h1 {
                font-size: 28px;
            }
            .article-grid {
                grid-template-columns: 1fr;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .data-tip-card {
                flex-direction: column;
                padding: 20px;
                gap: 16px;
            }
            .subscribe-box {
                flex-direction: column;
                padding: 24px;
                align-items: stretch;
            }
            .subscribe-form {
                min-width: auto;
                flex-direction: column;
            }
            .subscribe-form input {
                min-width: auto;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-contact {
                grid-column: auto;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .category-header {
                padding: 32px 0 28px;
            }
            .category-header h1 {
                font-size: 24px;
            }
            .category-header .cat-description {
                font-size: 15px;
            }
            .filter-bar .container {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .article-card .card-title {
                font-size: 16px;
            }
            .data-tip-card {
                padding: 16px;
            }
            .subscribe-box {
                padding: 20px 16px;
            }
            .logo {
                font-size: 19px;
            }
            .logo .logo-mark {
                width: 28px;
                height: 28px;
                font-size: 14px;
            }
        }

/* roulang page: category2 */
:root {
            --color-bg: #0D1114;
            --color-bg-secondary: #141A1F;
            --color-bg-elevated: #1A2128;
            --color-red: #E63329;
            --color-red-hover: #C42B22;
            --color-accent: #C8FF00;
            --color-accent-hover: #B0E600;
            --color-warm-bg: #F5F3EF;
            --color-text-on-dark: #F5F3EF;
            --color-text-muted-on-dark: #B8C0C6;
            --color-text-on-light: #161A1F;
            --color-text-muted-on-light: #5A6670;
            --color-border-dark: rgba(255, 255, 255, 0.08);
            --color-border-light: rgba(22, 26, 31, 0.12);
            --radius-card: 16px;
            --radius-sm: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 44px rgba(0, 0, 0, 0.5);
            --transition-base: 0.2s ease;
            --transition-slow: 0.35s ease;
            --font-heading: "Source Han Sans SC", "思源黑体", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --font-body: "Source Han Sans SC", "思源黑体", "PingFang SC", "苹方", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --font-mono: "SF Mono", "Cascadia Code", "Roboto Mono", "Consolas", monospace;
            --header-height: 68px;
            --container-max: 1280px;
            --gap-col: 24px;
        }
        @media (max-width: 768px) {
            :root {
                --header-height: 60px;
                --gap-col: 16px;
            }
        }
        @media (max-width: 520px) {
            :root {
                --header-height: 56px;
            }
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text-on-dark);
            background-color: var(--color-bg);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }
        input {
            font-family: inherit;
            border: none;
            background: none;
        }
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            background-color: var(--color-bg);
            border-bottom: 1px solid var(--color-border-dark);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 24px;
        }
        .logo {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 22px;
            line-height: 1.2;
            color: var(--color-text-on-dark);
            letter-spacing: -0.5px;
            white-space: nowrap;
        }
        .logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background-color: var(--color-accent);
            color: var(--color-bg);
            border-radius: 8px;
            font-size: 16px;
            font-weight: 900;
            letter-spacing: -1px;
            flex-shrink: 0;
        }
        .logo .logo-text {
            color: var(--color-text-on-dark);
        }
        .logo .logo-text .logo-accent {
            color: var(--color-accent);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }
        .main-nav a {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-muted-on-dark);
            border-radius: var(--radius-pill);
            transition: color var(--transition-base), background-color var(--transition-base);
            white-space: nowrap;
        }
        .main-nav a:hover,
        .main-nav a:focus-visible {
            color: var(--color-text-on-dark);
            background-color: rgba(255, 255, 255, 0.06);
        }
        .main-nav a.active {
            color: var(--color-accent);
            font-weight: 700;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .header-search {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            color: var(--color-text-muted-on-dark);
            transition: color var(--transition-base), background-color var(--transition-base);
            font-size: 18px;
        }
        .header-search:hover {
            color: var(--color-text-on-dark);
            background-color: rgba(255, 255, 255, 0.06);
        }
        .btn-subscribe-nav {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            background-color: var(--color-accent);
            color: var(--color-bg);
            font-weight: 700;
            font-size: 14px;
            border-radius: var(--radius-pill);
            transition: background-color var(--transition-base), color var(--transition-base);
            white-space: nowrap;
        }
        .btn-subscribe-nav:hover {
            background-color: var(--color-accent-hover);
            color: var(--color-bg);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 38px;
            height: 38px;
            padding: 8px;
            border-radius: 8px;
            background: transparent;
        }
        .nav-toggle span {
            display: block;
            width: 100%;
            height: 2px;
            background-color: var(--color-text-on-dark);
            border-radius: 2px;
            transition: transform var(--transition-base), opacity var(--transition-base);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        @media (max-width: 1024px) {
            .main-nav {
                gap: 2px;
            }
            .main-nav a {
                padding: 8px 10px;
                font-size: 14px;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: stretch;
                background-color: var(--color-bg);
                border-bottom: 1px solid var(--color-border-dark);
                padding: 16px 24px 24px;
                gap: 8px;
                z-index: 999;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 16px;
                font-size: 16px;
                border-radius: var(--radius-sm);
            }
            .main-nav a.active::after {
                display: none;
            }
            .main-nav a.active {
                background-color: rgba(200, 255, 0, 0.08);
                color: var(--color-accent);
            }
            .header-actions .btn-subscribe-nav {
                display: none;
            }
            .header-search {
                display: none;
            }
        }

        /* Breadcrumb */
        .breadcrumb-section {
            padding-top: 20px;
            padding-bottom: 0;
            background-color: var(--color-bg);
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
        }
        .breadcrumb-nav a {
            color: var(--color-text-muted-on-dark);
            transition: color var(--transition-base);
        }
        .breadcrumb-nav a:hover {
            color: var(--color-accent);
        }
        .breadcrumb-nav .separator {
            color: var(--color-text-muted-on-dark);
            opacity: 0.5;
            font-size: 12px;
        }
        .breadcrumb-nav .current {
            color: var(--color-text-on-dark);
            font-weight: 600;
        }

        /* Category Page Header */
        .category-header {
            background-color: var(--color-bg-secondary);
            border-top: 1px solid var(--color-border-dark);
            border-bottom: 1px solid var(--color-border-dark);
            padding: 48px 0 40px;
            position: relative;
            overflow: hidden;
        }
        .category-header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: radial-gradient(circle at 30% 70%, rgba(200, 255, 0, 0.04) 0%, transparent 45%),
                radial-gradient(circle at 80% 20%, rgba(230, 51, 41, 0.05) 0%, transparent 40%);
            pointer-events: none;
        }
        .category-header::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255, 255, 255, 0.015) 2px, rgba(255, 255, 255, 0.015) 4px);
            pointer-events: none;
        }
        .category-header .container {
            position: relative;
            z-index: 1;
        }
        .category-header-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            color: var(--color-accent);
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .category-header-label::before {
            content: '';
            width: 20px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 2px;
        }
        .category-header h1 {
            font-family: var(--font-heading);
            font-size: 38px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--color-text-on-dark);
            margin: 0 0 12px;
            letter-spacing: -0.5px;
        }
        .category-header .header-sub {
            font-size: 16px;
            color: var(--color-text-muted-on-dark);
            max-width: 640px;
            line-height: 1.7;
            margin: 0;
        }
        @media (max-width: 768px) {
            .category-header {
                padding: 36px 0 28px;
            }
            .category-header h1 {
                font-size: 30px;
            }
            .category-header .header-sub {
                font-size: 15px;
            }
        }
        @media (max-width: 520px) {
            .category-header {
                padding: 28px 0 22px;
            }
            .category-header h1 {
                font-size: 26px;
            }
        }

        /* Category Intro */
        .category-intro {
            background-color: var(--color-bg);
            padding: 36px 0 20px;
        }
        .category-intro p {
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-text-muted-on-dark);
            margin: 0;
            max-width: 900px;
        }
        .category-intro p strong {
            color: var(--color-text-on-dark);
            font-weight: 600;
        }
        @media (max-width: 768px) {
            .category-intro {
                padding: 28px 0 16px;
            }
            .category-intro p {
                font-size: 15px;
                line-height: 1.8;
            }
        }

        /* Filter Bar */
        .filter-bar-section {
            background-color: var(--color-bg);
            padding: 12px 0 24px;
        }
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
        }
        .filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-on-dark);
            margin-right: 4px;
            flex-shrink: 0;
        }
        .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-muted-on-dark);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-pill);
            transition: color var(--transition-base), border-color var(--transition-base), background-color var(--transition-base);
            background: transparent;
        }
        .filter-tag:hover {
            color: var(--color-text-on-dark);
            border-color: var(--color-accent);
        }
        .filter-tag.active {
            color: var(--color-accent);
            border-color: var(--color-accent);
            background-color: rgba(200, 255, 0, 0.06);
            font-weight: 600;
        }
        @media (max-width: 520px) {
            .filter-bar {
                gap: 8px;
            }
            .filter-tag {
                padding: 7px 14px;
                font-size: 13px;
            }
            .filter-label {
                font-size: 13px;
            }
        }

        /* Article Cards Grid */
        .articles-section {
            background-color: var(--color-bg);
            padding: 12px 0 40px;
        }
        .section-title-row {
            display: flex;
            align-items: baseline;
            justify-content: space-between;
            margin-bottom: 24px;
            flex-wrap: wrap;
            gap: 12px;
        }
        .section-title-row h2 {
            font-family: var(--font-heading);
            font-size: 26px;
            font-weight: 800;
            color: var(--color-text-on-dark);
            margin: 0;
            letter-spacing: -0.3px;
        }
        .section-title-row .title-meta {
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
        }
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap-col);
        }
        .article-card {
            background-color: var(--color-bg-elevated);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-accent);
        }
        .article-card .card-image-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: var(--color-bg-secondary);
        }
        .article-card .card-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .article-card:hover .card-image-wrap img {
            transform: scale(1.03);
        }
        .article-card .card-tags {
            position: absolute;
            top: 12px;
            left: 12px;
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .article-card .card-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 10px;
            font-size: 12px;
            font-weight: 700;
            border-radius: 4px;
            letter-spacing: 0.3px;
        }
        .card-tag.tag-red {
            background-color: var(--color-red);
            color: #fff;
        }
        .card-tag.tag-accent {
            background-color: var(--color-accent);
            color: var(--color-bg);
        }
        .article-card .card-body {
            display: flex;
            flex-direction: column;
            flex: 1;
            padding: 20px;
            gap: 10px;
        }
        .article-card .card-title {
            font-family: var(--font-heading);
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--color-text-on-dark);
            margin: 0;
            transition: color var(--transition-base);
        }
        .article-card:hover .card-title {
            color: var(--color-accent);
        }
        .article-card .card-excerpt {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-muted-on-dark);
            margin: 0;
            flex: 1;
        }
        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
            padding-top: 12px;
            border-top: 1px solid var(--color-border-dark);
        }
        .article-card .card-meta .meta-date {
            font-weight: 500;
        }
        .article-card .card-meta .meta-read {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .article-card .card-meta .meta-author {
            color: var(--color-text-on-dark);
            font-weight: 500;
        }
        @media (max-width: 1024px) {
            .articles-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .section-title-row h2 {
                font-size: 22px;
            }
            .article-card .card-title {
                font-size: 16px;
            }
            .article-card .card-excerpt {
                font-size: 13px;
            }
        }
        @media (max-width: 520px) {
            .articles-grid {
                grid-template-columns: 1fr;
            }
            .article-card .card-body {
                padding: 16px;
            }
        }

        /* Topic Entry Section */
        .topic-entry-section {
            background-color: var(--color-bg-secondary);
            border-top: 1px solid var(--color-border-dark);
            border-bottom: 1px solid var(--color-border-dark);
            padding: 48px 0;
        }
        .topic-entry-section .section-title-row {
            margin-bottom: 28px;
        }
        .topic-entry-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap-col);
        }
        .topic-entry-card {
            background-color: var(--color-bg-elevated);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 10px;
            min-height: 160px;
        }
        .topic-entry-card:hover {
            transform: translateY(-4px);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card-hover);
        }
        .topic-entry-card .topic-icon {
            font-size: 28px;
            line-height: 1;
            color: var(--color-accent);
        }
        .topic-entry-card h3 {
            font-family: var(--font-heading);
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin: 0;
            line-height: 1.35;
        }
        .topic-entry-card p {
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            line-height: 1.7;
            margin: 0;
            flex: 1;
        }
        .topic-entry-card .topic-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-base);
        }
        .topic-entry-card:hover .topic-link {
            gap: 8px;
        }
        @media (max-width: 1024px) {
            .topic-entry-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .topic-entry-grid {
                grid-template-columns: 1fr;
            }
            .topic-entry-card {
                min-height: auto;
                padding: 20px 18px;
            }
        }

        /* Data Tip Section */
        .data-tip-section {
            background-color: var(--color-bg);
            padding: 48px 0;
        }
        .data-tip-card {
            background-color: var(--color-bg-elevated);
            border: 1px solid var(--color-accent);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            position: relative;
            overflow: hidden;
        }
        .data-tip-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background-color: var(--color-accent);
        }
        .data-tip-card h3 {
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .data-tip-card h3 .tip-badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            background-color: var(--color-accent);
            color: var(--color-bg);
            font-size: 12px;
            font-weight: 700;
            border-radius: var(--radius-pill);
            letter-spacing: 0.5px;
        }
        .data-tip-card p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--color-text-muted-on-dark);
            margin: 0;
        }
        @media (max-width: 768px) {
            .data-tip-section {
                padding: 36px 0;
            }
            .data-tip-card {
                padding: 22px 20px;
            }
            .data-tip-card h3 {
                font-size: 18px;
            }
            .data-tip-card p {
                font-size: 14px;
            }
        }

        /* Subscribe CTA */
        .subscribe-cta-section {
            background-color: var(--color-bg-secondary);
            border-top: 1px solid var(--color-border-dark);
            border-bottom: 1px solid var(--color-border-dark);
            padding: 40px 0;
        }
        .subscribe-cta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }
        .subscribe-cta .cta-text {
            flex: 1;
            min-width: 260px;
        }
        .subscribe-cta .cta-text h3 {
            font-family: var(--font-heading);
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin: 0 0 6px;
        }
        .subscribe-cta .cta-text p {
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            margin: 0;
        }
        .subscribe-form {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .subscribe-form input[type="email"] {
            width: 280px;
            padding: 12px 18px;
            background-color: var(--color-bg);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-pill);
            color: var(--color-text-on-dark);
            font-size: 14px;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .subscribe-form input[type="email"]::placeholder {
            color: var(--color-text-muted-on-dark);
            opacity: 0.7;
        }
        .subscribe-form input[type="email"]:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(200, 255, 0, 0.12);
            outline: none;
        }
        .btn-subscribe {
            display: inline-flex;
            align-items: center;
            padding: 12px 26px;
            background-color: var(--color-accent);
            color: var(--color-bg);
            font-weight: 700;
            font-size: 14px;
            border-radius: var(--radius-pill);
            transition: background-color var(--transition-base), color var(--transition-base);
            white-space: nowrap;
        }
        .btn-subscribe:hover {
            background-color: var(--color-red);
            color: #fff;
        }
        @media (max-width: 768px) {
            .subscribe-cta {
                flex-direction: column;
                align-items: flex-start;
                gap: 20px;
            }
            .subscribe-form {
                width: 100%;
                flex-wrap: wrap;
            }
            .subscribe-form input[type="email"] {
                flex: 1;
                min-width: 200px;
                width: auto;
            }
        }
        @media (max-width: 520px) {
            .subscribe-form {
                flex-direction: column;
                align-items: stretch;
            }
            .subscribe-form input[type="email"] {
                width: 100%;
            }
            .btn-subscribe {
                justify-content: center;
            }
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-bg);
            border-top: 1px solid var(--color-border-dark);
            padding: 52px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 20px;
            color: var(--color-text-on-dark);
            margin-bottom: 14px;
        }
        .footer-logo .logo-accent {
            color: var(--color-accent);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--color-text-muted-on-dark);
            margin: 0;
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin: 0 0 14px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            transition: color var(--transition-base);
        }
        .footer-col ul a:hover {
            color: var(--color-accent);
        }
        .footer-contact p {
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
            margin: 0 0 6px;
            line-height: 1.6;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid var(--color-border-dark);
        }
        .footer-bottom span {
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
        }
        .footer-links {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
        }
        .footer-links a {
            color: var(--color-text-muted-on-dark);
            transition: color var(--transition-base);
        }
        .footer-links a:hover {
            color: var(--color-accent);
        }
        .footer-links span {
            color: var(--color-text-muted-on-dark);
            opacity: 0.4;
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .site-footer {
                padding: 36px 0 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: auto;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category3 */
:root {
            --color-bg: #0D1114;
            --color-bg-secondary: #141A1F;
            --color-bg-elevated: #1A2128;
            --color-red: #E63329;
            --color-red-hover: #C42B22;
            --color-accent: #C8FF00;
            --color-accent-hover: #B0E600;
            --color-warm-bg: #F5F3EF;
            --color-text-on-dark: #F5F3EF;
            --color-text-muted-on-dark: #B8C0C6;
            --color-text-on-light: #161A1F;
            --color-text-muted-on-light: #5A6670;
            --color-border-dark: rgba(255, 255, 255, 0.08);
            --color-border-light: rgba(22, 26, 31, 0.12);
            --radius-card: 16px;
            --radius-sm: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 44px rgba(0, 0, 0, 0.5);
            --transition-base: 0.2s ease;
            --transition-slow: 0.35s ease;
            --font-heading: "Source Han Sans SC", "思源黑体", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --font-body: "Source Han Sans SC", "思源黑体", "PingFang SC", "苹方", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --font-mono: "SF Mono", "Cascadia Code", "Roboto Mono", "Consolas", monospace;
            --header-height: 68px;
            --container-max: 1280px;
            --gap-col: 24px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text-on-dark);
            background-color: var(--color-bg);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }

        input {
            font-family: inherit;
            border: none;
            background: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            background-color: var(--color-bg);
            border-bottom: 1px solid var(--color-border-dark);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 24px;
        }

        .logo {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 22px;
            line-height: 1.2;
            color: var(--color-text-on-dark);
            letter-spacing: -0.5px;
            white-space: nowrap;
        }

        .logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background-color: var(--color-accent);
            color: var(--color-bg);
            border-radius: 8px;
            font-size: 16px;
            font-weight: 900;
            letter-spacing: -1px;
            flex-shrink: 0;
        }

        .logo .logo-text {
            color: var(--color-text-on-dark);
        }

        .logo .logo-text .logo-accent {
            color: var(--color-accent);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .main-nav a {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-muted-on-dark);
            border-radius: var(--radius-pill);
            transition: color var(--transition-base), background-color var(--transition-base);
            white-space: nowrap;
        }

        .main-nav a:hover,
        .main-nav a:focus-visible {
            color: var(--color-text-on-dark);
            background-color: rgba(255, 255, 255, 0.06);
        }

        .main-nav a.active {
            color: var(--color-accent);
            font-weight: 700;
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 2px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .search-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            color: var(--color-text-muted-on-dark);
            background-color: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--color-border-dark);
            transition: all var(--transition-base);
        }

        .search-btn:hover {
            color: var(--color-text-on-dark);
            border-color: var(--color-accent);
            background-color: rgba(200, 255, 0, 0.08);
        }

        .btn-subscribe {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-bg);
            background-color: var(--color-accent);
            border-radius: var(--radius-pill);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .btn-subscribe:hover {
            background-color: var(--color-red);
            color: #fff;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 32px;
            height: 32px;
            align-items: center;
            justify-content: center;
            color: var(--color-text-on-dark);
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: currentColor;
            border-radius: 2px;
            transition: all var(--transition-base);
        }

        /* Breadcrumb */
        .breadcrumb-section {
            background-color: var(--color-bg);
            padding: 20px 0 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-text-muted-on-dark);
            transition: color var(--transition-base);
        }

        .breadcrumb a:hover {
            color: var(--color-accent);
        }

        .breadcrumb .sep {
            color: var(--color-text-muted-on-dark);
            opacity: 0.5;
        }

        .breadcrumb .current {
            color: var(--color-accent);
            font-weight: 600;
        }

        /* Category Page Header */
        .category-header {
            padding: 40px 0 32px;
            background-color: var(--color-bg);
            border-bottom: 1px solid var(--color-border-dark);
        }

        .category-header .container {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .category-header h1 {
            font-family: var(--font-heading);
            font-size: 36px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--color-text-on-dark);
            letter-spacing: -0.5px;
            margin: 0;
        }

        .category-header .header-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            background-color: rgba(200, 255, 0, 0.08);
            border: 1px solid rgba(200, 255, 0, 0.2);
            border-radius: var(--radius-pill);
            padding: 4px 14px;
            width: fit-content;
        }

        .category-header .header-tag::before {
            content: '';
            width: 8px;
            height: 8px;
            background-color: var(--color-accent);
            border-radius: 50%;
            flex-shrink: 0;
        }

        /* Category Intro */
        .category-intro {
            padding: 32px 0;
            background-color: var(--color-bg);
        }

        .category-intro .intro-card {
            background-color: var(--color-bg-secondary);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            border-left: 4px solid var(--color-accent);
        }

        .category-intro p {
            font-size: 16px;
            line-height: 1.9;
            color: var(--color-text-muted-on-dark);
            margin: 0;
        }

        .category-intro p strong {
            color: var(--color-text-on-dark);
            font-weight: 600;
        }

        /* Filter Bar */
        .filter-bar {
            padding: 24px 0;
            background-color: var(--color-bg);
        }

        .filter-bar .filter-wrapper {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .filter-bar .filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-on-dark);
            margin-right: 4px;
            flex-shrink: 0;
        }

        .filter-bar .filter-chip {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-muted-on-dark);
            background-color: transparent;
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-pill);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .filter-bar .filter-chip:hover {
            color: var(--color-text-on-dark);
            border-color: rgba(255, 255, 255, 0.25);
            background-color: rgba(255, 255, 255, 0.04);
        }

        .filter-bar .filter-chip.active {
            color: var(--color-bg);
            background-color: var(--color-accent);
            border-color: var(--color-accent);
            font-weight: 600;
        }

        .filter-bar .filter-chip.hot {
            color: var(--color-red);
            border-color: rgba(230, 51, 41, 0.4);
        }

        .filter-bar .filter-chip.hot:hover {
            background-color: rgba(230, 51, 41, 0.1);
            border-color: var(--color-red);
        }

        /* Article Grid */
        .article-grid-section {
            padding: 32px 0 48px;
            background-color: var(--color-bg);
        }

        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .article-card {
            background-color: var(--color-bg-secondary);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-slow);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            transform: translateY(-4px);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card-hover);
        }

        .article-card .card-image {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: var(--color-bg-elevated);
        }

        .article-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .article-card:hover .card-image img {
            transform: scale(1.04);
        }

        .article-card .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            color: #fff;
            background-color: var(--color-red);
            border-radius: var(--radius-pill);
            letter-spacing: 0.3px;
        }

        .article-card .card-tag.accent {
            color: var(--color-bg);
            background-color: var(--color-accent);
        }

        .article-card .card-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }

        .article-card .card-title {
            font-family: var(--font-heading);
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--color-text-on-dark);
            margin: 0;
            transition: color var(--transition-base);
        }

        .article-card:hover .card-title {
            color: var(--color-accent);
        }

        .article-card .card-excerpt {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-muted-on-dark);
            margin: 0;
            flex: 1;
        }

        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
            border-top: 1px solid var(--color-border-dark);
            padding-top: 14px;
            margin-top: 4px;
        }

        .article-card .card-meta .meta-dot {
            width: 4px;
            height: 4px;
            background-color: var(--color-text-muted-on-dark);
            border-radius: 50%;
            opacity: 0.5;
        }

        .article-card .card-meta .read-count {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--color-text-muted-on-dark);
        }

        .article-card .card-meta .read-count::before {
            content: '👁';
            font-size: 12px;
            opacity: 0.7;
        }

        /* Topic Entry Section */
        .topic-entry-section {
            padding: 48px 0;
            background-color: var(--color-bg-secondary);
            border-top: 1px solid var(--color-border-dark);
            border-bottom: 1px solid var(--color-border-dark);
        }

        .section-heading {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
            flex-wrap: wrap;
            gap: 12px;
        }

        .section-heading h2 {
            font-family: var(--font-heading);
            font-size: 26px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--color-text-on-dark);
            margin: 0;
            letter-spacing: -0.3px;
        }

        .section-heading .heading-line {
            flex: 1;
            height: 1px;
            background: linear-gradient(to right, var(--color-accent), transparent);
            margin-left: 16px;
            opacity: 0.4;
        }

        .topic-entry-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .topic-entry-card {
            display: flex;
            flex-direction: column;
            gap: 10px;
            background-color: var(--color-bg-elevated);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            padding: 20px;
            transition: all var(--transition-base);
            cursor: pointer;
        }

        .topic-entry-card:hover {
            border-color: var(--color-accent);
            background-color: rgba(200, 255, 0, 0.04);
        }

        .topic-entry-card .topic-icon {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            background-color: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-sm);
            margin-bottom: 4px;
        }

        .topic-entry-card .topic-name {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin: 0;
        }

        .topic-entry-card .topic-desc {
            font-size: 13px;
            line-height: 1.6;
            color: var(--color-text-muted-on-dark);
            margin: 0;
        }

        /* Data Tip Card */
        .data-tip-section {
            padding: 48px 0;
            background-color: var(--color-bg);
        }

        .data-tip-card {
            display: flex;
            gap: 24px;
            align-items: flex-start;
            background-color: var(--color-bg-secondary);
            border: 1px solid rgba(200, 255, 0, 0.35);
            border-left: 4px solid var(--color-accent);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.25);
        }

        .data-tip-card .tip-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            background-color: rgba(200, 255, 0, 0.1);
            border-radius: var(--radius-sm);
        }

        .data-tip-card .tip-content h3 {
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin: 0 0 10px;
        }

        .data-tip-card .tip-content p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--color-text-muted-on-dark);
            margin: 0;
        }

        .data-tip-card .tip-content .tip-highlight {
            color: var(--color-accent);
            font-weight: 600;
        }

        /* Subscribe CTA */
        .subscribe-cta {
            padding: 48px 0 64px;
            background-color: var(--color-bg);
        }

        .subscribe-cta .cta-box {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            background-color: var(--color-bg-elevated);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            padding: 32px 36px;
            flex-wrap: wrap;
        }

        .subscribe-cta .cta-text h3 {
            font-family: var(--font-heading);
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin: 0 0 6px;
        }

        .subscribe-cta .cta-text p {
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            margin: 0;
        }

        .subscribe-cta .cta-form {
            display: flex;
            gap: 10px;
            flex: 1;
            max-width: 420px;
            min-width: 260px;
        }

        .subscribe-cta .cta-form input {
            flex: 1;
            padding: 12px 18px;
            font-size: 14px;
            color: var(--color-text-on-dark);
            background-color: var(--color-bg);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-pill);
            transition: border-color var(--transition-base);
            min-width: 0;
        }

        .subscribe-cta .cta-form input::placeholder {
            color: var(--color-text-muted-on-dark);
            opacity: 0.7;
        }

        .subscribe-cta .cta-form input:focus {
            outline: none;
            border-color: var(--color-accent);
        }

        .subscribe-cta .cta-form button {
            flex-shrink: 0;
            padding: 12px 24px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-bg);
            background-color: var(--color-accent);
            border-radius: var(--radius-pill);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .subscribe-cta .cta-form button:hover {
            background-color: var(--color-red);
            color: #fff;
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-bg-secondary);
            border-top: 1px solid var(--color-border-dark);
            padding: 48px 0 28px;
            margin-top: 0;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .site-footer .footer-brand .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 20px;
            color: var(--color-text-on-dark);
            margin-bottom: 14px;
        }

        .site-footer .footer-brand .footer-logo .logo-accent {
            color: var(--color-accent);
        }

        .site-footer .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-text-muted-on-dark);
            margin: 0;
        }

        .site-footer .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin: 0 0 14px;
        }

        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .site-footer .footer-col ul a {
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            transition: color var(--transition-base);
        }

        .site-footer .footer-col ul a:hover {
            color: var(--color-accent);
        }

        .site-footer .footer-contact p {
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
            margin: 0 0 6px;
            line-height: 1.6;
        }

        .site-footer .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            border-top: 1px solid var(--color-border-dark);
            padding-top: 20px;
            flex-wrap: wrap;
        }

        .site-footer .footer-bottom span {
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
        }

        .site-footer .footer-links {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
        }

        .site-footer .footer-links a {
            color: var(--color-text-muted-on-dark);
            transition: color var(--transition-base);
        }

        .site-footer .footer-links a:hover {
            color: var(--color-accent);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --header-height: 60px;
                --gap-col: 16px;
            }
            .main-nav {
                gap: 2px;
            }
            .main-nav a {
                padding: 6px 10px;
                font-size: 14px;
            }
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .topic-entry-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
                gap: 24px;
            }
            .site-footer .footer-contact {
                grid-column: span 3;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 56px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                flex-direction: column;
                background-color: var(--color-bg);
                border-bottom: 1px solid var(--color-border-dark);
                padding: 12px 24px 16px;
                gap: 2px;
                align-items: stretch;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 16px;
                font-size: 16px;
                border-radius: var(--radius-sm);
                justify-content: flex-start;
            }
            .main-nav a.active::after {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .header-actions .search-btn {
                display: none;
            }
            .btn-subscribe {
                padding: 7px 14px;
                font-size: 13px;
            }
            .category-header h1 {
                font-size: 28px;
            }
            .category-intro .intro-card {
                padding: 20px 22px;
            }
            .article-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .topic-entry-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .data-tip-card {
                flex-direction: column;
                gap: 16px;
                padding: 20px 22px;
            }
            .subscribe-cta .cta-box {
                flex-direction: column;
                align-items: flex-start;
                padding: 24px 22px;
                gap: 18px;
            }
            .subscribe-cta .cta-form {
                max-width: 100%;
                width: 100%;
                flex-direction: column;
            }
            .subscribe-cta .cta-form button {
                width: 100%;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .site-footer .footer-contact {
                grid-column: span 2;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            body {
                font-size: 15px;
            }
            .logo {
                font-size: 19px;
            }
            .logo .logo-mark {
                width: 28px;
                height: 28px;
                font-size: 14px;
            }
            .category-header h1 {
                font-size: 24px;
            }
            .section-heading h2 {
                font-size: 21px;
            }
            .filter-bar .filter-wrapper {
                gap: 6px;
            }
            .filter-bar .filter-chip {
                padding: 6px 12px;
                font-size: 13px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .site-footer .footer-contact {
                grid-column: span 1;
            }
            .article-card .card-title {
                font-size: 16px;
            }
            .article-card .card-excerpt {
                font-size: 13px;
            }
        }

/* roulang page: category5 */
:root {
            --color-bg: #0D1114;
            --color-bg-secondary: #141A1F;
            --color-bg-elevated: #1A2128;
            --color-red: #E63329;
            --color-red-hover: #C42B22;
            --color-accent: #C8FF00;
            --color-accent-hover: #B0E600;
            --color-warm-bg: #F5F3EF;
            --color-text-on-dark: #F5F3EF;
            --color-text-muted-on-dark: #B8C0C6;
            --color-text-on-light: #161A1F;
            --color-text-muted-on-light: #5A6670;
            --color-border-dark: rgba(255, 255, 255, 0.08);
            --color-border-light: rgba(22, 26, 31, 0.12);
            --radius-card: 16px;
            --radius-sm: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 44px rgba(0, 0, 0, 0.5);
            --transition-base: 0.2s ease;
            --transition-slow: 0.35s ease;
            --font-heading: "Source Han Sans SC", "思源黑体", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --font-body: "Source Han Sans SC", "思源黑体", "PingFang SC", "苹方", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --font-mono: "SF Mono", "Cascadia Code", "Roboto Mono", "Consolas", monospace;
            --header-height: 68px;
            --container-max: 1280px;
            --gap-col: 24px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text-on-dark);
            background-color: var(--color-bg);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }

        input {
            font-family: inherit;
            border: none;
            background: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            background-color: var(--color-bg);
            border-bottom: 1px solid var(--color-border-dark);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 24px;
        }

        .logo {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 22px;
            line-height: 1.2;
            color: var(--color-text-on-dark);
            letter-spacing: -0.5px;
            white-space: nowrap;
        }

        .logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background-color: var(--color-accent);
            color: var(--color-bg);
            border-radius: 8px;
            font-size: 16px;
            font-weight: 900;
            letter-spacing: -1px;
            flex-shrink: 0;
        }

        .logo .logo-text {
            color: var(--color-text-on-dark);
        }

        .logo .logo-text .logo-accent {
            color: var(--color-accent);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .main-nav a {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-muted-on-dark);
            border-radius: var(--radius-pill);
            transition: color var(--transition-base), background-color var(--transition-base);
            white-space: nowrap;
        }

        .main-nav a:hover,
        .main-nav a:focus-visible {
            color: var(--color-text-on-dark);
            background-color: rgba(255, 255, 255, 0.06);
        }

        .main-nav a.active {
            color: var(--color-accent);
            font-weight: 700;
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 2px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-icon-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            color: var(--color-text-muted-on-dark);
            border: 1px solid var(--color-border-dark);
            transition: all var(--transition-base);
            font-size: 18px;
        }

        .search-icon-btn:hover {
            color: var(--color-text-on-dark);
            border-color: var(--color-accent);
            background-color: rgba(200, 255, 0, 0.05);
        }

        .btn-subscribe-sm {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            background-color: var(--color-accent);
            color: var(--color-bg);
            font-weight: 700;
            font-size: 14px;
            border: 1px solid var(--color-accent);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .btn-subscribe-sm:hover {
            background-color: var(--color-red);
            border-color: var(--color-red);
            color: #fff;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            border: 1px solid var(--color-border-dark);
            transition: border-color var(--transition-base);
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--color-text-on-dark);
            border-radius: 2px;
            transition: all var(--transition-base);
        }

        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(13, 17, 20, 0.97);
            z-index: 999;
            flex-direction: column;
            padding: 20px 24px;
            gap: 6px;
            overflow-y: auto;
        }

        .mobile-nav-overlay.open {
            display: flex;
        }

        .mobile-nav-overlay a {
            display: block;
            padding: 14px 16px;
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-muted-on-dark);
            border-radius: 12px;
            border: 1px solid transparent;
            transition: all var(--transition-base);
        }

        .mobile-nav-overlay a:hover {
            color: var(--color-text-on-dark);
            border-color: var(--color-border-dark);
            background-color: rgba(255, 255, 255, 0.04);
        }

        .mobile-nav-overlay a.active {
            color: var(--color-accent);
            border-color: rgba(200, 255, 0, 0.3);
            background-color: rgba(200, 255, 0, 0.05);
        }

        .breadcrumb-section {
            padding: 18px 0;
            background-color: var(--color-bg-secondary);
            border-bottom: 1px solid var(--color-border-dark);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb li:not(:last-child)::after {
            content: '/';
            color: var(--color-text-muted-on-dark);
            opacity: 0.5;
        }

        .breadcrumb a {
            color: var(--color-text-muted-on-dark);
            transition: color var(--transition-base);
        }

        .breadcrumb a:hover {
            color: var(--color-accent);
        }

        .breadcrumb .current {
            color: var(--color-text-on-dark);
            font-weight: 600;
        }

        .category-page-header {
            background-color: var(--color-bg-secondary);
            padding: 40px 0 36px;
            border-bottom: 1px solid var(--color-border-dark);
            position: relative;
            overflow: hidden;
        }

        .category-page-header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: radial-gradient(circle at 85% 20%, rgba(200, 255, 0, 0.06) 0%, transparent 55%),
                radial-gradient(circle at 15% 80%, rgba(230, 51, 41, 0.04) 0%, transparent 50%);
            pointer-events: none;
        }

        .category-page-header .container {
            position: relative;
            z-index: 1;
        }

        .category-page-header h1 {
            font-family: var(--font-heading);
            font-size: clamp(30px, 4vw, 40px);
            font-weight: 800;
            color: var(--color-text-on-dark);
            margin: 0 0 10px;
            line-height: 1.25;
            letter-spacing: -0.5px;
        }

        .category-page-header .header-sub {
            font-size: 16px;
            color: var(--color-text-muted-on-dark);
            margin: 0;
            max-width: 680px;
        }

        .category-intro {
            background-color: var(--color-bg);
            padding: 28px 0 24px;
            border-bottom: 1px solid var(--color-border-dark);
        }

        .category-intro p {
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-text-muted-on-dark);
            max-width: 900px;
            margin: 0;
        }

        .category-intro p strong {
            color: var(--color-text-on-dark);
            font-weight: 600;
        }

        .filter-bar {
            background-color: var(--color-bg-secondary);
            padding: 14px 0;
            border-bottom: 1px solid var(--color-border-dark);
        }

        .filter-bar .container {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-muted-on-dark);
            margin-right: 4px;
            white-space: nowrap;
        }

        .filter-chip {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            border: 1px solid var(--color-border-dark);
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            transition: all var(--transition-base);
            white-space: nowrap;
            background-color: transparent;
        }

        .filter-chip:hover,
        .filter-chip:focus-visible {
            border-color: var(--color-accent);
            color: var(--color-text-on-dark);
        }

        .filter-chip.active {
            background-color: var(--color-accent);
            color: var(--color-bg);
            border-color: var(--color-accent);
            font-weight: 700;
        }

        .articles-grid-section {
            background-color: var(--color-bg);
            padding: 36px 0 48px;
        }

        .articles-grid-section .section-heading {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
            flex-wrap: wrap;
            gap: 12px;
        }

        .articles-grid-section .section-heading h2 {
            font-family: var(--font-heading);
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin: 0;
            line-height: 1.3;
        }

        .articles-grid-section .section-heading .view-all {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 14px;
            color: var(--color-accent);
            font-weight: 600;
            transition: color var(--transition-base);
        }

        .articles-grid-section .section-heading .view-all:hover {
            color: var(--color-accent-hover);
        }

        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .article-card {
            background-color: var(--color-bg-elevated);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border-dark);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: transform var(--transition-slow), box-shadow var(--transition-slow), border-color var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            transform: translateY(-4px);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card-hover);
        }

        .article-card .card-image-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
        }

        .article-card .card-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .article-card:hover .card-image-wrap img {
            transform: scale(1.04);
        }

        .article-card .card-tags {
            position: absolute;
            top: 12px;
            left: 12px;
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .card-tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 700;
            line-height: 1.4;
            letter-spacing: 0.3px;
        }

        .card-tag.red {
            background-color: var(--color-red);
            color: #fff;
        }

        .card-tag.accent {
            background-color: var(--color-accent);
            color: var(--color-bg);
        }

        .article-card .card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .article-card .card-title {
            font-family: var(--font-heading);
            font-size: 17px;
            font-weight: 700;
            line-height: 1.45;
            color: var(--color-text-on-dark);
            margin: 0 0 8px;
            transition: color var(--transition-base);
        }

        .article-card:hover .card-title {
            color: var(--color-accent);
        }

        .article-card .card-excerpt {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-muted-on-dark);
            margin: 0 0 14px;
            flex: 1;
        }

        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
            border-top: 1px solid var(--color-border-dark);
            padding-top: 14px;
        }

        .article-card .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .topics-section {
            background-color: var(--color-warm-bg);
            padding: 40px 0 44px;
        }

        .topics-section .section-heading {
            margin-bottom: 24px;
        }

        .topics-section .section-heading h2 {
            font-family: var(--font-heading);
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text-on-light);
            margin: 0;
            line-height: 1.3;
        }

        .topics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .topic-card {
            background-color: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border-light);
            padding: 22px 20px;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            display: block;
            text-align: left;
        }

        .topic-card:hover {
            transform: translateY(-3px);
            border-color: var(--color-accent);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        }

        .topic-card .topic-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background-color: var(--color-bg);
            color: var(--color-accent);
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .topic-card h3 {
            font-family: var(--font-heading);
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text-on-light);
            margin: 0 0 6px;
            line-height: 1.35;
        }

        .topic-card p {
            font-size: 14px;
            line-height: 1.65;
            color: var(--color-text-muted-on-light);
            margin: 0;
        }

        .tips-section {
            background-color: var(--color-bg);
            padding: 40px 0 44px;
        }

        .tips-card {
            background-color: var(--color-bg-elevated);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-accent);
            padding: 28px 30px;
            display: flex;
            gap: 20px;
            align-items: flex-start;
            box-shadow: var(--shadow-card);
        }

        .tips-card .tip-indicator {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 48px;
            height: 48px;
            border-radius: 12px;
            background-color: var(--color-accent);
            color: var(--color-bg);
            font-size: 20px;
            font-weight: 900;
        }

        .tips-card .tip-content h2 {
            font-family: var(--font-heading);
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin: 0 0 10px;
            line-height: 1.35;
        }

        .tips-card .tip-content p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--color-text-muted-on-dark);
            margin: 0;
        }

        .subscribe-cta-section {
            background-color: var(--color-bg-secondary);
            padding: 36px 0 40px;
            border-top: 1px solid var(--color-border-dark);
        }

        .subscribe-cta-card {
            background-color: var(--color-bg-elevated);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border-dark);
            padding: 28px 30px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .subscribe-cta-card .cta-text h2 {
            font-family: var(--font-heading);
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin: 0 0 6px;
            line-height: 1.35;
        }

        .subscribe-cta-card .cta-text p {
            font-size: 15px;
            color: var(--color-text-muted-on-dark);
            margin: 0;
        }

        .subscribe-form {
            display: flex;
            gap: 10px;
            flex-shrink: 0;
            flex-wrap: wrap;
        }

        .subscribe-form input {
            width: 240px;
            padding: 10px 18px;
            border-radius: var(--radius-pill);
            border: 1px solid var(--color-border-dark);
            background-color: var(--color-bg);
            color: var(--color-text-on-dark);
            font-size: 15px;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .subscribe-form input::placeholder {
            color: var(--color-text-muted-on-dark);
        }

        .subscribe-form input:focus {
            outline: none;
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(200, 255, 0, 0.15);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 24px;
            border-radius: var(--radius-pill);
            background-color: var(--color-accent);
            color: var(--color-bg);
            font-weight: 700;
            font-size: 15px;
            border: 1px solid var(--color-accent);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .btn-primary:hover {
            background-color: var(--color-red);
            border-color: var(--color-red);
            color: #fff;
        }

        .site-footer {
            background-color: var(--color-bg);
            border-top: 1px solid var(--color-border-dark);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 20px;
            color: var(--color-text-on-dark);
            margin-bottom: 14px;
        }

        .footer-brand .footer-logo .logo-accent {
            color: var(--color-accent);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-muted-on-dark);
            margin: 0;
        }

        .footer-col h4 {
            font-family: var(--font-heading);
            font-size: 15px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin: 0 0 14px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            transition: color var(--transition-base);
        }

        .footer-col ul li a:hover {
            color: var(--color-accent);
        }

        .footer-contact p {
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
            margin: 0 0 6px;
            line-height: 1.6;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid var(--color-border-dark);
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
        }

        .footer-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-links a {
            color: var(--color-text-muted-on-dark);
            transition: color var(--transition-base);
        }

        .footer-links a:hover {
            color: var(--color-accent);
        }

        @media (max-width: 1024px) {
            .articles-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .topics-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 60px;
                --gap-col: 16px;
            }

            .main-nav {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .header-actions .search-icon-btn {
                display: none;
            }

            .category-page-header {
                padding: 28px 0 24px;
            }

            .category-page-header h1 {
                font-size: 28px;
            }

            .articles-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .topics-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .tips-card {
                flex-direction: column;
                padding: 22px 20px;
            }

            .subscribe-cta-card {
                flex-direction: column;
                align-items: stretch;
                text-align: left;
            }

            .subscribe-form {
                width: 100%;
            }

            .subscribe-form input {
                flex: 1;
                min-width: 0;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --header-height: 56px;
            }

            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .logo {
                font-size: 18px;
            }

            .logo .logo-mark {
                width: 28px;
                height: 28px;
                font-size: 14px;
            }

            .btn-subscribe-sm {
                padding: 7px 14px;
                font-size: 13px;
            }

            .category-page-header h1 {
                font-size: 24px;
            }

            .category-intro p {
                font-size: 15px;
            }

            .articles-grid-section .section-heading h2 {
                font-size: 20px;
            }

            .topics-section .section-heading h2 {
                font-size: 20px;
            }

            .tips-card .tip-content h2 {
                font-size: 19px;
            }

            .subscribe-cta-card .cta-text h2 {
                font-size: 19px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category4 */
:root {
            --color-bg: #0D1114;
            --color-bg-secondary: #141A1F;
            --color-bg-elevated: #1A2128;
            --color-bg-elevated-2: #202830;
            --color-red: #E63329;
            --color-red-hover: #C42B22;
            --color-accent: #C8FF00;
            --color-accent-hover: #B0E600;
            --color-warm-bg: #F5F3EF;
            --color-text-on-dark: #F5F3EF;
            --color-text-muted-on-dark: #B8C0C6;
            --color-text-on-light: #161A1F;
            --color-text-muted-on-light: #5A6670;
            --color-border-dark: rgba(255, 255, 255, 0.08);
            --color-border-dark-strong: rgba(255, 255, 255, 0.16);
            --color-border-light: rgba(22, 26, 31, 0.12);
            --radius-card: 16px;
            --radius-sm: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 44px rgba(0, 0, 0, 0.5);
            --transition-base: 0.2s ease;
            --transition-slow: 0.35s ease;
            --font-heading: "Source Han Sans SC", "思源黑体", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --font-body: "Source Han Sans SC", "思源黑体", "PingFang SC", "苹方", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --font-mono: "SF Mono", "Cascadia Code", "Roboto Mono", "Consolas", monospace;
            --header-height: 68px;
            --container-max: 1280px;
            --gap-col: 24px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text-on-dark);
            background-color: var(--color-bg);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }

        input {
            font-family: inherit;
            border: none;
            background: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            background-color: var(--color-bg);
            border-bottom: 1px solid var(--color-border-dark);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }

        .logo {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 20px;
            line-height: 1.2;
            color: var(--color-text-on-dark);
            letter-spacing: -0.5px;
            white-space: nowrap;
        }

        .logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 30px;
            height: 30px;
            background-color: var(--color-accent);
            color: var(--color-bg);
            border-radius: 8px;
            font-size: 14px;
            font-weight: 900;
            letter-spacing: -1px;
            flex-shrink: 0;
        }

        .logo .logo-text {
            color: var(--color-text-on-dark);
        }

        .logo .logo-text .logo-accent {
            color: var(--color-accent);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 2px;
            flex: 1;
            justify-content: center;
            flex-wrap: wrap;
        }

        .main-nav a {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 8px 12px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-muted-on-dark);
            border-radius: var(--radius-pill);
            transition: color var(--transition-base), background-color var(--transition-base);
            white-space: nowrap;
        }

        .main-nav a:hover,
        .main-nav a:focus-visible {
            color: var(--color-text-on-dark);
            background-color: rgba(255, 255, 255, 0.06);
        }

        .main-nav a.active {
            color: var(--color-accent);
            font-weight: 700;
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 2px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-pill);
            color: var(--color-text-muted-on-dark);
            transition: color var(--transition-base), background-color var(--transition-base);
        }

        .search-btn:hover {
            color: var(--color-text-on-dark);
            background-color: rgba(255, 255, 255, 0.06);
        }

        .search-btn svg {
            width: 18px;
            height: 18px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .btn-subscribe-header {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            background-color: var(--color-accent);
            color: var(--color-bg);
            font-size: 14px;
            font-weight: 700;
            transition: background-color var(--transition-base), color var(--transition-base);
            white-space: nowrap;
        }

        .btn-subscribe-header:hover {
            background-color: var(--color-red);
            color: #fff;
        }

        .navbar-toggler {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 36px;
            height: 36px;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--color-border-dark-strong);
            border-radius: 8px;
            background: transparent;
            transition: border-color var(--transition-base);
        }

        .navbar-toggler:hover {
            border-color: var(--color-accent);
        }

        .navbar-toggler .bar {
            display: block;
            width: 18px;
            height: 2px;
            background-color: var(--color-text-on-dark);
            border-radius: 2px;
            transition: background-color var(--transition-base);
        }

        .navbar-toggler:hover .bar {
            background-color: var(--color-accent);
        }

        /* Breadcrumb */
        .breadcrumb-section {
            padding: 14px 0 0;
            background-color: var(--color-bg);
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
        }

        .breadcrumb-nav a {
            color: var(--color-text-muted-on-dark);
            transition: color var(--transition-base);
        }

        .breadcrumb-nav a:hover {
            color: var(--color-accent);
        }

        .breadcrumb-nav .separator {
            color: var(--color-text-muted-on-dark);
            opacity: 0.5;
        }

        .breadcrumb-nav .current {
            color: var(--color-accent);
            font-weight: 500;
        }

        /* Category Page Header */
        .category-page-header {
            position: relative;
            background-color: var(--color-bg-secondary);
            padding: 36px 0 40px;
            border-bottom: 1px solid var(--color-border-dark);
            overflow: hidden;
            min-height: 240px;
            display: flex;
            align-items: center;
        }

        .category-page-header::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 550px;
            height: 550px;
            background: radial-gradient(circle, rgba(200, 255, 0, 0.07) 0%, transparent 60%);
            pointer-events: none;
        }

        .category-page-header::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(230, 51, 41, 0.06) 0%, transparent 55%);
            pointer-events: none;
        }

        .category-page-header .container {
            position: relative;
            z-index: 1;
        }

        .category-page-header h1 {
            font-family: var(--font-heading);
            font-size: 38px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--color-text-on-dark);
            margin: 12px 0 8px;
            letter-spacing: -0.5px;
        }

        .category-page-header .category-subtitle {
            font-size: 15px;
            color: var(--color-text-muted-on-dark);
            max-width: 560px;
            line-height: 1.7;
            margin: 0;
        }

        /* Category Intro */
        .category-intro-section {
            padding: 32px 0 20px;
            background-color: var(--color-bg);
        }

        .category-intro-box {
            max-width: 860px;
            padding: 0 0 8px;
        }

        .category-intro-box p {
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-text-muted-on-dark);
            margin: 0 0 12px;
        }

        .category-intro-box p strong {
            color: var(--color-text-on-dark);
            font-weight: 600;
        }

        /* Filter Bar */
        .filter-section {
            padding: 16px 0 24px;
            background-color: var(--color-bg);
            border-bottom: 1px solid var(--color-border-dark);
        }

        .filter-bar {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }

        .filter-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text-muted-on-dark);
            margin-right: 8px;
            white-space: nowrap;
        }

        .filter-chip {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-muted-on-dark);
            background-color: transparent;
            border: 1px solid var(--color-border-dark-strong);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .filter-chip:hover,
        .filter-chip:focus-visible {
            border-color: var(--color-accent);
            color: var(--color-text-on-dark);
        }

        .filter-chip.active {
            background-color: var(--color-accent);
            color: var(--color-bg);
            border-color: var(--color-accent);
            font-weight: 700;
        }

        /* Article Cards Grid */
        .articles-section {
            padding: 36px 0 40px;
            background-color: var(--color-bg);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            color: var(--color-accent);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 6px;
        }

        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 2px;
        }

        .section-title-h2 {
            font-family: var(--font-heading);
            font-size: 26px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--color-text-on-dark);
            margin: 0 0 24px;
            letter-spacing: -0.3px;
        }

        .article-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap-col);
        }

        .article-card {
            position: relative;
            background-color: var(--color-bg-elevated);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border-dark);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            transform: translateY(-4px);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card-hover);
        }

        .article-card-image {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: var(--color-bg-secondary);
        }

        .article-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .article-card:hover .article-card-image img {
            transform: scale(1.04);
        }

        .article-card-tags {
            position: absolute;
            top: 10px;
            left: 10px;
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            z-index: 2;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            padding: 3px 10px;
            border-radius: var(--radius-pill);
            font-size: 11px;
            font-weight: 700;
            line-height: 1.5;
            background-color: rgba(13, 17, 20, 0.8);
            color: var(--color-accent);
            border: 1px solid rgba(200, 255, 0, 0.3);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            white-space: nowrap;
        }

        .tag.tag-red {
            color: #fff;
            background-color: rgba(230, 51, 41, 0.85);
            border-color: rgba(230, 51, 41, 0.6);
        }

        .article-card-body {
            padding: 18px 20px 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .article-card-title {
            font-family: var(--font-heading);
            font-size: 17px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--color-text-on-dark);
            margin: 0 0 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            letter-spacing: -0.2px;
        }

        .article-card-title a {
            color: inherit;
            transition: color var(--transition-base);
        }

        .article-card-title a:hover {
            color: var(--color-accent);
        }

        .article-card-summary {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-muted-on-dark);
            margin: 0 0 14px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .article-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--color-text-muted-on-dark);
            border-top: 1px solid var(--color-border-dark);
            padding-top: 12px;
            flex-shrink: 0;
        }

        .article-card-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .article-card-meta .meta-item svg {
            width: 13px;
            height: 13px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .view-more-wrap {
            margin-top: 28px;
            display: flex;
            justify-content: center;
        }

        .btn-view-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            border-radius: var(--radius-pill);
            background-color: transparent;
            border: 1px solid var(--color-border-dark-strong);
            color: var(--color-text-on-dark);
            font-size: 14px;
            font-weight: 600;
            transition: all var(--transition-base);
        }

        .btn-view-more:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
        }

        /* Topic Entry */
        .topic-entry-section {
            padding: 36px 0 40px;
            background-color: var(--color-bg-secondary);
            border-top: 1px solid var(--color-border-dark);
            border-bottom: 1px solid var(--color-border-dark);
        }

        .topic-entry-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap-col);
        }

        .topic-entry-card {
            display: flex;
            flex-direction: column;
            background-color: var(--color-bg-elevated);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border-dark);
            overflow: hidden;
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .topic-entry-card:hover {
            transform: translateY(-3px);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card-hover);
        }

        .topic-entry-card .topic-entry-image {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background-color: var(--color-bg-secondary);
        }

        .topic-entry-card .topic-entry-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .topic-entry-card:hover .topic-entry-image img {
            transform: scale(1.05);
        }

        .topic-entry-card .topic-entry-body {
            padding: 16px 18px 18px;
        }

        .topic-entry-card .topic-entry-title {
            font-family: var(--font-heading);
            font-size: 15px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin: 0 0 6px;
            line-height: 1.4;
        }

        .topic-entry-card .topic-entry-desc {
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
            line-height: 1.65;
            margin: 0;
        }

        /* Data Tip Box */
        .data-tip-section {
            padding: 36px 0 40px;
            background-color: var(--color-bg);
        }

        .data-tip-card {
            background-color: var(--color-bg-elevated);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-accent);
            padding: 28px 30px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .data-tip-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background-color: var(--color-accent);
        }

        .data-tip-card .tip-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 700;
            color: var(--color-accent);
            letter-spacing: 0.5px;
            margin-bottom: 10px;
        }

        .data-tip-card .tip-label svg {
            width: 14px;
            height: 14px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .data-tip-card p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--color-text-muted-on-dark);
            margin: 0;
        }

        /* Subscribe CTA Section */
        .subscribe-section {
            padding: 24px 0 32px;
            background-color: var(--color-bg);
        }

        .subscribe-box {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            background-color: var(--color-bg-elevated);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            padding: 20px 24px;
            box-shadow: var(--shadow-card);
        }

        .subscribe-box .subscribe-text {
            flex: 1;
            min-width: 220px;
        }

        .subscribe-box .subscribe-text h3 {
            font-family: var(--font-heading);
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin: 0 0 4px;
            line-height: 1.3;
        }

        .subscribe-box .subscribe-text p {
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
            margin: 0;
            line-height: 1.6;
        }

        .subscribe-form {
            display: flex;
            gap: 10px;
            flex-shrink: 0;
            flex-wrap: wrap;
        }

        .subscribe-form input[type="email"] {
            width: 260px;
            padding: 10px 16px;
            border-radius: var(--radius-pill);
            background-color: var(--color-bg);
            border: 1px solid var(--color-border-dark-strong);
            color: var(--color-text-on-dark);
            font-size: 14px;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .subscribe-form input[type="email"]::placeholder {
            color: rgba(184, 192, 198, 0.6);
        }

        .subscribe-form input[type="email"]:focus {
            outline: none;
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(200, 255, 0, 0.12);
        }

        .subscribe-form .btn-subscribe {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 24px;
            border-radius: var(--radius-pill);
            background-color: var(--color-accent);
            color: var(--color-bg);
            font-size: 14px;
            font-weight: 700;
            transition: background-color var(--transition-base), color var(--transition-base);
            white-space: nowrap;
        }

        .subscribe-form .btn-subscribe:hover {
            background-color: var(--color-red);
            color: #fff;
        }

        .subscribe-form .form-error {
            display: none;
            width: 100%;
            font-size: 12px;
            color: var(--color-red);
            margin-top: 4px;
        }

        .subscribe-form.has-error .form-error {
            display: block;
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-bg-secondary);
            border-top: 1px solid var(--color-border-dark);
            padding: 48px 0 0;
            margin-top: 0;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 32px;
            padding-bottom: 32px;
        }

        .footer-logo {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 20px;
            color: var(--color-text-on-dark);
            letter-spacing: -0.5px;
        }

        .footer-logo .logo-accent {
            color: var(--color-accent);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-text-muted-on-dark);
            margin: 12px 0 0;
            max-width: 340px;
        }

        .footer-col h4 {
            font-family: var(--font-heading);
            font-size: 14px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin: 0 0 12px;
            letter-spacing: 0.5px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            transition: color var(--transition-base);
        }

        .footer-col ul li a:hover {
            color: var(--color-accent);
        }

        .footer-contact p {
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
            line-height: 1.7;
            margin: 0 0 6px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 16px 0 20px;
            border-top: 1px solid var(--color-border-dark);
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
        }

        .footer-bottom .footer-links {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-bottom .footer-links a {
            color: var(--color-text-muted-on-dark);
            transition: color var(--transition-base);
        }

        .footer-bottom .footer-links a:hover {
            color: var(--color-accent);
        }

        .footer-bottom .footer-links span {
            color: var(--color-text-muted-on-dark);
            opacity: 0.5;
        }

        /* Mobile nav collapse */
        @media (max-width: 991px) {
            .navbar-toggler {
                display: flex;
            }

            .main-nav.collapse {
                display: none;
            }

            .main-nav.collapse.show {
                display: flex;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                flex-direction: column;
                background-color: var(--color-bg);
                border-bottom: 1px solid var(--color-border-dark);
                padding: 16px 24px 20px;
                gap: 4px;
                align-items: stretch;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
            }

            .main-nav.collapse.show a {
                padding: 12px 16px;
                font-size: 15px;
                border-radius: 8px;
                justify-content: space-between;
            }

            .main-nav.collapse.show a.active::after {
                display: none;
            }

            .main-nav.collapse.show a.active {
                background-color: rgba(200, 255, 0, 0.08);
            }

            .header-actions .search-btn {
                width: 36px;
                height: 36px;
            }

            .header-actions .btn-subscribe-header {
                padding: 7px 14px;
                font-size: 13px;
            }

            .category-page-header h1 {
                font-size: 32px;
            }

            .article-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .topic-entry-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 767px) {
            :root {
                --header-height: 56px;
                --gap-col: 16px;
            }

            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .logo {
                font-size: 17px;
            }

            .logo .logo-mark {
                width: 26px;
                height: 26px;
                font-size: 12px;
                border-radius: 6px;
            }

            .header-actions .btn-subscribe-header {
                display: none;
            }

            .category-page-header {
                padding: 28px 0 32px;
                min-height: 200px;
            }

            .category-page-header h1 {
                font-size: 26px;
            }

            .category-page-header .category-subtitle {
                font-size: 14px;
            }

            .category-intro-section {
                padding: 24px 0 16px;
            }

            .category-intro-box p {
                font-size: 15px;
                line-height: 1.8;
            }

            .filter-section {
                padding: 12px 0 16px;
            }

            .filter-bar {
                gap: 6px;
            }

            .filter-chip {
                padding: 5px 12px;
                font-size: 12px;
            }

            .filter-label {
                font-size: 12px;
                margin-right: 4px;
            }

            .articles-section {
                padding: 24px 0 28px;
            }

            .section-title-h2 {
                font-size: 22px;
                margin-bottom: 16px;
            }

            .article-card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .article-card-body {
                padding: 14px 16px 12px;
            }

            .article-card-title {
                font-size: 16px;
            }

            .article-card-summary {
                font-size: 13px;
                -webkit-line-clamp: 2;
            }

            .article-card-meta {
                font-size: 11px;
                gap: 8px;
                flex-wrap: wrap;
            }

            .btn-view-more {
                padding: 8px 20px;
                font-size: 13px;
            }

            .topic-entry-section {
                padding: 24px 0 28px;
            }

            .topic-entry-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .data-tip-section {
                padding: 24px 0 28px;
            }

            .data-tip-card {
                padding: 20px 18px;
            }

            .data-tip-card p {
                font-size: 14px;
                line-height: 1.8;
            }

            .subscribe-section {
                padding: 16px 0 24px;
            }

            .subscribe-box {
                padding: 16px 18px;
                gap: 14px;
                flex-direction: column;
                align-items: stretch;
            }

            .subscribe-box .subscribe-text h3 {
                font-size: 16px;
            }

            .subscribe-form {
                width: 100%;
                flex-direction: column;
            }

            .subscribe-form input[type="email"] {
                width: 100%;
            }

            .subscribe-form .btn-subscribe {
                justify-content: center;
                width: 100%;
            }

            .site-footer {
                padding: 32px 0 0;
            }

            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
                padding-bottom: 20px;
            }

            .footer-brand {
                grid-column: auto;
            }

            .footer-brand p {
                font-size: 13px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                font-size: 12px;
            }
        }

        @media (max-width: 520px) {
            body {
                font-size: 15px;
            }

            .category-page-header h1 {
                font-size: 22px;
            }

            .section-title-h2 {
                font-size: 20px;
            }

            .article-card-title {
                font-size: 15px;
            }

            .article-card-summary {
                font-size: 12px;
                -webkit-line-clamp: 2;
            }

            .tag {
                font-size: 10px;
                padding: 2px 8px;
            }

            .topic-entry-card .topic-entry-title {
                font-size: 14px;
            }
        }

/* roulang page: category6 */
:root {
            --color-bg: #0D1114;
            --color-bg-secondary: #141A1F;
            --color-bg-elevated: #1A2128;
            --color-red: #E63329;
            --color-red-hover: #C42B22;
            --color-accent: #C8FF00;
            --color-accent-hover: #B0E600;
            --color-warm-bg: #F5F3EF;
            --color-text-on-dark: #F5F3EF;
            --color-text-muted-on-dark: #B8C0C6;
            --color-text-on-light: #161A1F;
            --color-text-muted-on-light: #5A6670;
            --color-border-dark: rgba(255, 255, 255, 0.08);
            --color-border-light: rgba(22, 26, 31, 0.12);
            --radius-card: 16px;
            --radius-sm: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 44px rgba(0, 0, 0, 0.5);
            --transition-base: 0.2s ease;
            --transition-slow: 0.35s ease;
            --font-heading: "Source Han Sans SC", "思源黑体", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --font-body: "Source Han Sans SC", "思源黑体", "PingFang SC", "苹方", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --font-mono: "SF Mono", "Cascadia Code", "Roboto Mono", "Consolas", monospace;
            --header-height: 68px;
            --container-max: 1280px;
            --gap-col: 24px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text-on-dark);
            background-color: var(--color-bg);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base), border-color var(--transition-base), background-color var(--transition-base);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            color: inherit;
        }

        input {
            font-family: inherit;
            border: none;
            background: none;
            color: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            background-color: var(--color-bg);
            border-bottom: 1px solid var(--color-border-dark);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 24px;
        }

        .logo {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 22px;
            line-height: 1.2;
            color: var(--color-text-on-dark);
            letter-spacing: -0.5px;
            white-space: nowrap;
        }

        .logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background-color: var(--color-accent);
            color: var(--color-bg);
            border-radius: 8px;
            font-size: 16px;
            font-weight: 900;
            letter-spacing: -1px;
            flex-shrink: 0;
        }

        .logo .logo-text {
            color: var(--color-text-on-dark);
        }

        .logo .logo-text .logo-accent {
            color: var(--color-accent);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .main-nav a {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-muted-on-dark);
            border-radius: var(--radius-pill);
            transition: color var(--transition-base), background-color var(--transition-base);
            white-space: nowrap;
        }

        .main-nav a:hover,
        .main-nav a:focus-visible {
            color: var(--color-text-on-dark);
            background-color: rgba(255, 255, 255, 0.06);
        }

        .main-nav a.active {
            color: var(--color-accent);
            font-weight: 700;
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 2px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-btn {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background-color: var(--color-bg-elevated);
            color: var(--color-text-muted-on-dark);
            transition: color var(--transition-base), background-color var(--transition-base);
        }

        .search-btn:hover {
            color: var(--color-text-on-dark);
            background-color: rgba(255, 255, 255, 0.12);
        }

        .btn-subscribe {
            display: inline-flex;
            align-items: center;
            padding: 10px 20px;
            background-color: var(--color-accent);
            color: var(--color-bg);
            font-size: 14px;
            font-weight: 700;
            border-radius: var(--radius-pill);
            transition: background-color var(--transition-base), color var(--transition-base);
        }

        .btn-subscribe:hover {
            background-color: var(--color-red);
            color: #fff;
        }

        .mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            border-radius: 8px;
            background-color: var(--color-bg-elevated);
        }

        .mobile-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background-color: var(--color-text-on-dark);
            border-radius: 1px;
            transition: all var(--transition-base);
        }

        /* 分类页头 */
        .page-banner {
            background: linear-gradient(135deg, #1A2128 0%, #141A1F 55%, #0D1114 100%);
            border-bottom: 1px solid var(--color-border-dark);
            padding: 48px 0 40px;
            position: relative;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 40%;
            height: 100%;
            background: radial-gradient(circle at center, rgba(200, 255, 0, 0.06), transparent 70%);
            pointer-events: none;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-text-muted-on-dark);
            transition: color var(--transition-base);
        }

        .breadcrumb a:hover {
            color: var(--color-accent);
        }

        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.35);
            font-size: 12px;
        }

        .breadcrumb .current {
            color: var(--color-accent);
            font-weight: 600;
        }

        .page-banner h1 {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -1px;
            color: var(--color-text-on-dark);
            margin-bottom: 12px;
        }

        .page-banner .banner-sub {
            font-size: 16px;
            color: var(--color-text-muted-on-dark);
            max-width: 560px;
            line-height: 1.7;
        }

        /* 筛选条 */
        .filter-bar {
            background-color: var(--color-bg-secondary);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }

        .filter-bar .filter-label {
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            font-weight: 600;
            flex-shrink: 0;
        }

        .filter-bar .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            font-size: 14px;
            border-radius: var(--radius-pill);
            background-color: var(--color-bg-elevated);
            color: var(--color-text-muted-on-dark);
            border: 1px solid var(--color-border-dark);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .filter-bar .filter-tag:hover,
        .filter-bar .filter-tag.active {
            background-color: var(--color-accent);
            color: var(--color-bg);
            border-color: var(--color-accent);
            font-weight: 700;
        }

        /* 卡片列表 */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .article-card {
            background-color: var(--color-bg-elevated);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-slow), border-color var(--transition-base), box-shadow var(--transition-slow);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            transform: translateY(-4px);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card-hover);
        }

        .article-card .card-thumb {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: var(--color-bg-secondary);
        }

        .article-card .card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .article-card:hover .card-thumb img {
            transform: scale(1.04);
        }

        .article-card .card-tags {
            position: absolute;
            top: 12px;
            left: 12px;
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }

        .article-card .card-tag {
            display: inline-block;
            padding: 4px 10px;
            font-size: 12px;
            font-weight: 700;
            border-radius: 6px;
            background-color: var(--color-red);
            color: #fff;
        }

        .article-card .card-tag.tag-green {
            background-color: var(--color-accent);
            color: var(--color-bg);
        }

        .article-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .article-card .card-title {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.45;
            color: var(--color-text-on-dark);
            margin-bottom: 8px;
            transition: color var(--transition-base);
        }

        .article-card:hover .card-title {
            color: var(--color-accent);
        }

        .article-card .card-summary {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-muted-on-dark);
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: rgba(184, 192, 198, 0.7);
            margin-top: auto;
            flex-wrap: wrap;
        }

        .article-card .card-meta .meta-dot {
            width: 3px;
            height: 3px;
            border-radius: 50%;
            background-color: rgba(184, 192, 198, 0.5);
        }

        .article-card .card-meta .read-count {
            color: var(--color-accent);
            font-weight: 600;
        }

        /* 专题入口 */
        .topic-entry-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .topic-entry-card {
            background-color: var(--color-bg-elevated);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            padding: 20px;
            text-align: left;
            transition: transform var(--transition-base), border-color var(--transition-base);
            display: block;
        }

        .topic-entry-card:hover {
            transform: translateY(-3px);
            border-color: var(--color-accent);
        }

        .topic-entry-card .topic-icon {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: var(--color-accent);
            color: var(--color-bg);
            border-radius: 10px;
            font-size: 18px;
            font-weight: 900;
            margin-bottom: 12px;
        }

        .topic-entry-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin-bottom: 6px;
        }

        .topic-entry-card p {
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
            line-height: 1.6;
            margin: 0;
        }

        /* 小贴士 */
        .tip-card {
            background-color: var(--color-bg-elevated);
            border: 1px solid var(--color-accent);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            box-shadow: 0 0 0 4px rgba(200, 255, 0, 0.06);
            position: relative;
        }

        .tip-card::before {
            content: '';
            position: absolute;
            left: 0;
            top: 24px;
            bottom: 24px;
            width: 4px;
            background-color: var(--color-accent);
            border-radius: 2px;
        }

        .tip-card h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-accent);
            margin-bottom: 10px;
        }

        .tip-card p {
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-text-muted-on-dark);
            margin: 0;
        }

        /* 订阅 CTA */
        .subscribe-cta {
            background: linear-gradient(135deg, #1A2128 0%, #0D1114 100%);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            padding: 36px 40px;
            display: flex;
            align-items: center;
            gap: 32px;
            flex-wrap: wrap;
        }

        .subscribe-cta .cta-text {
            flex: 1;
            min-width: 260px;
        }

        .subscribe-cta h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin-bottom: 8px;
        }

        .subscribe-cta p {
            font-size: 15px;
            color: var(--color-text-muted-on-dark);
            margin: 0;
        }

        .subscribe-form {
            display: flex;
            gap: 10px;
            flex: 1;
            min-width: 280px;
        }

        .subscribe-form input {
            flex: 1;
            padding: 12px 18px;
            background-color: var(--color-bg);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-pill);
            font-size: 15px;
            color: var(--color-text-on-dark);
            transition: border-color var(--transition-base);
        }

        .subscribe-form input::placeholder {
            color: rgba(184, 192, 198, 0.6);
        }

        .subscribe-form input:focus {
            border-color: var(--color-accent);
        }

        .subscribe-form button {
            padding: 12px 28px;
            background-color: var(--color-accent);
            color: var(--color-bg);
            font-size: 15px;
            font-weight: 700;
            border-radius: var(--radius-pill);
            white-space: nowrap;
            transition: background-color var(--transition-base), color var(--transition-base);
        }

        .subscribe-form button:hover {
            background-color: var(--color-red);
            color: #fff;
        }

        /* Sections */
        .page-section {
            padding: 48px 0;
        }

        .page-section.alt-bg {
            background-color: var(--color-bg-secondary);
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 28px;
            flex-wrap: wrap;
        }

        .section-head h2 {
            font-size: 28px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--color-text-on-dark);
            letter-spacing: -0.5px;
        }

        .section-head .section-link {
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            font-weight: 500;
            transition: color var(--transition-base);
            white-space: nowrap;
        }

        .section-head .section-link:hover {
            color: var(--color-accent);
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-bg-secondary);
            border-top: 1px solid var(--color-border-dark);
            padding: 48px 0 24px;
            margin-top: 48px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 800;
            color: var(--color-text-on-dark);
            margin-bottom: 12px;
            display: block;
        }

        .footer-brand .footer-logo .logo-accent {
            color: var(--color-accent);
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin-bottom: 14px;
        }

        .footer-col ul {
            padding: 0;
            margin: 0;
            list-style: none;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--color-text-muted-on-dark);
            transition: color var(--transition-base);
        }

        .footer-col ul li a:hover {
            color: var(--color-accent);
        }

        .footer-contact p {
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
            margin-bottom: 6px;
            line-height: 1.6;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 20px;
            border-top: 1px solid var(--color-border-dark);
            font-size: 13px;
            color: var(--color-text-muted-on-dark);
        }

        .footer-bottom .footer-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-bottom .footer-links a {
            color: var(--color-text-muted-on-dark);
            transition: color var(--transition-base);
        }

        .footer-bottom .footer-links a:hover {
            color: var(--color-accent);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .topic-entry-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .page-banner h1 {
                font-size: 32px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 56px;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background-color: var(--color-bg);
                border-bottom: 1px solid var(--color-border-dark);
                flex-direction: column;
                padding: 12px 24px;
                gap: 2px;
                align-items: stretch;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 16px;
                font-size: 16px;
                border-radius: 8px;
            }
            .main-nav a.active::after {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .header-actions .btn-subscribe {
                display: none;
            }
            .header-actions .search-btn {
                display: none;
            }
            .cards-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .topic-entry-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .page-section {
                padding: 32px 0;
            }
            .page-banner {
                padding: 32px 0 28px;
            }
            .page-banner h1 {
                font-size: 28px;
            }
            .section-head h2 {
                font-size: 22px;
            }
            .subscribe-cta {
                padding: 24px 20px;
                flex-direction: column;
                gap: 16px;
            }
            .subscribe-form {
                flex-direction: column;
                width: 100%;
            }
            .subscribe-form input,
            .subscribe-form button {
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .filter-bar {
                padding: 12px 16px;
                gap: 8px;
            }
            .filter-bar .filter-tag {
                padding: 5px 12px;
                font-size: 13px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .page-banner h1 {
                font-size: 24px;
            }
            .article-card .card-title {
                font-size: 16px;
            }
            .tip-card {
                padding: 20px 18px 20px 24px;
            }
            .breadcrumb {
                font-size: 13px;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}