/* roulang page: index */
:root {
            --bg: #0D0F12;
            --surface: #161A20;
            --surface-alt: #1E232B;
            --surface-hover: #242B35;
            --border: #2B313B;
            --border-hover: #3A424F;
            --primary: #FF6B35;
            --primary-hover: #FF8555;
            --primary-dim: rgba(255, 107, 53, 0.15);
            --secondary: #00C2A8;
            --secondary-hover: #00D4B8;
            --secondary-dim: rgba(0, 194, 168, 0.15);
            --accent: #F4D03F;
            --accent-dim: rgba(244, 208, 63, 0.15);
            --success: #2DC653;
            --success-dim: rgba(45, 198, 83, 0.15);
            --warning: #F4D03F;
            --text: #F5F7FA;
            --text-muted: #A2A9B3;
            --text-dim: #6E7781;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-full: 999px;
            --shadow: 0 0 0 1px rgba(255, 255, 255, 0.04), 0 18px 40px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 0 0 1px rgba(255, 107, 53, 0.25), 0 24px 56px rgba(0, 0, 0, 0.48);
            --shadow-glow: 0 0 32px rgba(255, 107, 53, 0.22);
            --font-display: 'Barlow Condensed', 'DIN Alternate', 'Oswald', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Roboto Mono', 'Consolas', monospace;
            --container: 1200px;
            --section-padding: 80px 0;
            --section-padding-tablet: 56px 0;
            --section-padding-mobile: 40px 0;
            --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--primary);
        }

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

        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        :focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 2px;
        }

        .container {
            width: min(100% - 48px, var(--container));
            margin-inline: auto;
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(13, 15, 18, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
        }

        .site-header.scrolled {
            background: rgba(13, 15, 18, 0.96);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.42);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            height: 70px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 20px;
            letter-spacing: 0.5px;
            color: var(--text);
            white-space: nowrap;
        }

        .nav-logo .logo-icon {
            width: 30px;
            height: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            border-radius: 8px;
            color: #fff;
            font-weight: 900;
            font-size: 16px;
            flex-shrink: 0;
        }

        .nav-logo:hover {
            color: var(--primary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: var(--radius-full);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--text);
            background: var(--surface-alt);
        }

        .nav-link.active {
            color: var(--primary);
            background: var(--primary-dim);
            font-weight: 600;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .nav-status {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-size: 12.5px;
            color: var(--text-muted);
            white-space: nowrap;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--success);
            animation: pulse-dot 2s infinite ease-in-out;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.6; transform: scale(1.2); }
        }

        .nav-bell {
            position: relative;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--surface);
            border: 1px solid var(--border);
            color: var(--text-muted);
            transition: all var(--transition);
            font-size: 16px;
        }

        .nav-bell:hover {
            border-color: var(--primary);
            color: var(--text);
        }

        .nav-bell .bell-badge {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            border: 1.5px solid var(--bg);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-full);
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.3px;
            line-height: 1.4;
            border: 1px solid transparent;
        }

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

        .btn-primary:hover {
            background: var(--primary-hover);
            color: #fff;
            box-shadow: 0 8px 24px rgba(255, 107, 53, 0.35);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(255, 107, 53, 0.25);
        }

        .btn-secondary {
            background: transparent;
            color: var(--text);
            border-color: var(--border);
        }

        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-dim);
        }

        .btn-secondary:active {
            background: var(--primary-dim);
            border-color: var(--primary);
        }

        .btn-outline {
            background: rgba(255, 107, 53, 0.08);
            color: var(--primary);
            border-color: rgba(255, 107, 53, 0.4);
        }

        .btn-outline:hover {
            background: rgba(255, 107, 53, 0.2);
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn-sm {
            padding: 7px 16px;
            font-size: 13px;
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            border-radius: 10px;
            background: var(--surface);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .nav-toggle:hover {
            border-color: var(--primary);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            right: 0;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            padding: 20px 24px 28px;
            z-index: 999;
            flex-direction: column;
            gap: 6px;
            box-shadow: 0 24px 48px rgba(0, 0, 0, 0.6);
        }

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

        .mobile-menu .nav-link {
            padding: 14px 16px;
            font-size: 16px;
            border-radius: 10px;
            width: 100%;
            text-align: left;
        }

        /* ========== Section通用 ========== */
        section {
            padding: var(--section-padding);
        }

        .section-header {
            margin-bottom: 36px;
            max-width: 820px;
        }

        .section-header.center {
            max-width: 720px;
            margin-inline: auto;
            text-align: center;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            color: var(--primary);
            background: var(--primary-dim);
            padding: 4px 12px;
            border-radius: var(--radius-full);
            margin-bottom: 14px;
            border: 1px solid rgba(255, 107, 53, 0.25);
        }

        .section-title {
            font-family: var(--font-display);
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text);
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 680px;
        }

        .section-header.center .section-desc {
            margin-inline: auto;
        }

        /* ========== Hero + 指标看板 ========== */
        .hero-section {
            position: relative;
            min-height: 680px;
            display: flex;
            align-items: center;
            padding: 80px 0 88px;
            background-image: url('/assets/images/58e71e2b9f4668c4.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 15, 18, 0.94) 20%, rgba(13, 15, 18, 0.82) 55%, rgba(13, 15, 18, 0.6));
            z-index: 1;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg) 15%, transparent);
            z-index: 2;
        }

        .hero-content {
            position: relative;
            z-index: 3;
            display: grid;
            grid-template-columns: 1fr 480px;
            gap: 56px;
            align-items: center;
        }

        .hero-left .section-tag {
            display: inline-flex;
        }

        .hero-title {
            font-family: var(--font-display);
            font-size: 48px;
            font-weight: 900;
            line-height: 1.18;
            letter-spacing: 0.5px;
            margin-bottom: 18px;
            color: var(--text);
            max-width: 600px;
        }

        .hero-title .highlight {
            color: var(--primary);
            position: relative;
            white-space: nowrap;
        }

        .hero-desc {
            font-size: 16.5px;
            line-height: 1.9;
            color: #D0D5DC;
            max-width: 540px;
            margin-bottom: 28px;
        }

        .hero-cta {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }

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

        .hero-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .meta-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--success);
        }

        .hero-dash {
            background: rgba(22, 26, 32, 0.9);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .dash-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
        }

        .dash-label {
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            color: var(--text-muted);
            text-transform: uppercase;
        }

        .dash-live {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            color: var(--success);
            font-weight: 600;
        }

        .dash-live .status-dot {
            width: 7px;
            height: 7px;
        }

        .progress-ring-wrapper {
            display: flex;
            align-items: center;
            gap: 28px;
            margin-bottom: 24px;
        }

        .progress-ring {
            position: relative;
            width: 110px;
            height: 110px;
            flex-shrink: 0;
        }

        .progress-ring svg {
            transform: rotate(-90deg);
            width: 100%;
            height: 100%;
        }

        .progress-ring circle {
            fill: none;
            stroke-width: 8;
            stroke-linecap: round;
        }

        .progress-ring .ring-bg {
            stroke: var(--border);
        }

        .progress-ring .ring-fill {
            stroke: var(--primary);
            stroke-dasharray: 283;
            stroke-dashoffset: calc(283 - (283 * 0.92));
            animation: ring-progress 1.4s ease-out forwards;
        }

        @keyframes ring-progress {
            from { stroke-dashoffset: 283; }
            to { stroke-dashoffset: calc(283 - (283 * 0.92)); }
        }

        .progress-ring .ring-center {
            position: absolute;
            inset: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            font-family: var(--font-display);
            font-weight: 900;
            line-height: 1.2;
        }

        .ring-center .ring-num {
            font-size: 30px;
            color: var(--text);
        }

        .ring-center .ring-unit {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
        }

        .ring-info h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text);
        }

        .ring-info p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .dash-metrics {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .dash-metric {
            background: var(--surface-alt);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 14px 16px;
            transition: all var(--transition);
        }

        .dash-metric:hover {
            border-color: var(--border-hover);
            background: var(--surface-hover);
        }

        .dash-metric .metric-label {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 4px;
        }

        .dash-metric .metric-value {
            font-family: var(--font-display);
            font-size: 26px;
            font-weight: 900;
            color: var(--text);
            line-height: 1.2;
            letter-spacing: 0.5px;
        }

        .dash-metric .metric-status {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 11px;
            margin-top: 4px;
            color: var(--text-muted);
        }

        .dash-metric .metric-status.up {
            color: var(--success);
        }

        .dash-update {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 18px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
            font-size: 12px;
            color: var(--text-dim);
        }

        /* ========== 服务矩阵 ========== */
        .service-section {
            background: var(--bg);
        }

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

        .service-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: opacity var(--transition);
        }

        .service-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
            background: var(--surface-hover);
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-dim);
            color: var(--primary);
            margin-bottom: 16px;
            font-size: 22px;
        }

        .service-card:nth-child(2) .service-icon {
            background: var(--secondary-dim);
            color: var(--secondary);
        }
        .service-card:nth-child(3) .service-icon {
            background: var(--accent-dim);
            color: var(--accent);
        }
        .service-card:nth-child(4) .service-icon {
            background: var(--success-dim);
            color: var(--success);
        }

        .service-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }

        .service-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ========== 榜单 ========== */
        .ranking-section {
            background: var(--surface-alt);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .ranking-list {
            display: grid;
            gap: 10px;
        }

        .ranking-item {
            display: flex;
            align-items: center;
            gap: 18px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 14px 18px;
            transition: all var(--transition);
        }

        .ranking-item:hover {
            border-color: var(--primary);
            background: var(--surface-hover);
        }

        .rank-num {
            font-family: var(--font-display);
            font-size: 34px;
            font-weight: 900;
            line-height: 1;
            color: var(--primary);
            width: 50px;
            text-align: center;
            flex-shrink: 0;
        }

        .ranking-item:nth-child(1) .rank-num {
            color: var(--accent);
        }
        .ranking-item:nth-child(2) .rank-num {
            color: #C0C8D0;
        }
        .ranking-item:nth-child(3) .rank-num {
            color: #B87333;
        }

        .rank-cover {
            width: 80px;
            height: 50px;
            border-radius: 6px;
            object-fit: cover;
            flex-shrink: 0;
            background: var(--border);
        }

        .rank-info {
            flex: 1;
            min-width: 0;
        }

        .rank-info h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .rank-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12.5px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .rank-tag {
            display: inline-flex;
            align-items: center;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: 600;
            background: var(--primary-dim);
            color: var(--primary);
        }

        .rank-tag.blue {
            background: var(--secondary-dim);
            color: var(--secondary);
        }

        .rank-tag.yellow {
            background: var(--accent-dim);
            color: var(--accent);
        }

        .rank-views {
            font-size: 12.5px;
            color: var(--text-dim);
            white-space: nowrap;
        }

        /* ========== 对比 ========== */
        .compare-section {
            background: var(--bg);
        }

        .compare-grid {
            display: grid;
            gap: 16px;
        }

        .compare-row {
            display: grid;
            grid-template-columns: 160px 1fr 1fr;
            gap: 16px;
            align-items: center;
            padding: 18px 20px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .compare-row:hover {
            border-color: var(--border-hover);
            background: var(--surface-hover);
        }

        .compare-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
        }

        .compare-bar-group {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .compare-bar {
            flex: 1;
            height: 10px;
            border-radius: 5px;
            background: var(--border);
            overflow: hidden;
            position: relative;
        }

        .compare-bar .bar-fill {
            display: block;
            height: 100%;
            border-radius: 5px;
            background: linear-gradient(90deg, var(--secondary), var(--secondary-hover));
            transition: width 1s ease;
        }

        .compare-bar .bar-fill.better {
            background: linear-gradient(90deg, var(--primary), var(--primary-hover));
        }

        .compare-bar .bar-fill.best {
            background: linear-gradient(90deg, var(--accent), var(--primary));
        }

        .bar-value {
            font-size: 12.5px;
            font-weight: 600;
            color: var(--text-muted);
            min-width: 50px;
            text-align: right;
            font-family: var(--font-mono);
        }

        /* ========== 里程碑 ========== */
        .milestone-section {
            background: var(--surface-alt);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .milestone-timeline {
            position: relative;
            padding-left: 28px;
        }

        .milestone-timeline::before {
            content: '';
            position: absolute;
            left: 6px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: linear-gradient(to bottom, var(--primary), var(--secondary), var(--accent));
            border-radius: 2px;
        }

        .milestone-item {
            position: relative;
            padding: 0 0 28px 24px;
        }

        .milestone-item:last-child {
            padding-bottom: 0;
        }

        .milestone-item::before {
            content: '';
            position: absolute;
            left: -28px;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid var(--bg);
            box-shadow: 0 0 0 2px var(--primary);
        }

        .milestone-item:nth-child(2)::before {
            background: var(--secondary);
            box-shadow: 0 0 0 2px var(--secondary);
        }
        .milestone-item:nth-child(3)::before {
            background: var(--accent);
            box-shadow: 0 0 0 2px var(--accent);
        }
        .milestone-item:nth-child(4)::before {
            background: var(--success);
            box-shadow: 0 0 0 2px var(--success);
        }

        .milestone-year {
            font-family: var(--font-display);
            font-size: 20px;
            font-weight: 900;
            color: var(--primary);
            margin-bottom: 4px;
            letter-spacing: 0.5px;
        }

        .milestone-item h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }

        .milestone-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .milestone-num {
            font-family: var(--font-display);
            font-size: 30px;
            font-weight: 900;
            color: var(--text);
            display: inline-block;
            margin-right: 8px;
        }

        /* ========== 专题合集 ========== */
        .collection-section {
            background: var(--bg);
        }

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

        .collection-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all var(--transition);
            aspect-ratio: 16/10;
            display: flex;
            align-items: flex-end;
            background: var(--surface);
        }

        .collection-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

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

        .collection-card .collection-overlay {
            position: relative;
            z-index: 2;
            padding: 18px;
            width: 100%;
            background: linear-gradient(to top, rgba(13, 15, 18, 0.9) 30%, transparent);
        }

        .collection-card .collection-overlay h3 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }

        .collection-card .collection-overlay span {
            font-size: 12px;
            color: var(--text-muted);
        }

        .collection-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-hover);
        }

        /* ========== 资讯列表 ========== */
        .news-section {
            background: var(--surface-alt);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .news-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }

        .news-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .news-card img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            background: var(--border);
        }

        .news-card-body {
            padding: 18px 20px 20px;
        }

        .news-card-body h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .news-card-body p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-dim);
            padding-top: 12px;
            border-top: 1px solid var(--border);
        }

        /* ========== 平台保障 ========== */
        .guarantee-section {
            background: var(--bg);
        }

        .guarantee-strip {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 0;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
        }

        .guarantee-item {
            padding: 24px 18px;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            border-right: 1px solid var(--border);
            transition: all var(--transition);
        }

        .guarantee-item:last-child {
            border-right: none;
        }

        .guarantee-item:hover {
            background: var(--surface-hover);
        }

        .guarantee-item .g-icon {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--success-dim);
            color: var(--success);
            margin-bottom: 12px;
            font-size: 18px;
        }

        .guarantee-item h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
        }

        .guarantee-item p {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ========== 设备适配 ========== */
        .device-section {
            background: var(--bg);
        }

        .device-strip {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .device-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 14px 22px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-full);
            font-size: 14px;
            color: var(--text-muted);
            transition: all var(--transition);
        }

        .device-item:hover {
            border-color: var(--primary);
            color: var(--text);
            background: var(--surface-hover);
        }

        .device-item .d-icon {
            font-size: 18px;
            color: var(--primary);
        }

        /* ========== 快速解答 ========== */
        .quick-section {
            background: var(--surface-alt);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .quick-list {
            display: grid;
            gap: 8px;
        }

        .quick-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 16px 18px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .quick-item:hover {
            border-color: var(--border-hover);
            background: var(--surface-hover);
        }

        .quick-num {
            font-family: var(--font-display);
            font-size: 18px;
            font-weight: 900;
            color: var(--primary);
            width: 28px;
            flex-shrink: 0;
            text-align: center;
            line-height: 1.5;
        }

        .quick-item h4 {
            font-size: 14.5px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 3px;
        }

        .quick-item p {
            font-size: 13.5px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--bg);
        }

        .faq-list {
            display: grid;
            gap: 10px;
            max-width: 820px;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            overflow: hidden;
        }

        .faq-item:hover {
            border-color: var(--border-hover);
        }

        .faq-item.open {
            border-color: var(--primary);
            background: var(--surface-hover);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            user-select: none;
            transition: all var(--transition);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-toggle {
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--border);
            color: var(--text-muted);
            font-size: 18px;
            font-weight: 700;
            transition: all var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-toggle {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

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

        .faq-item.open .faq-answer {
            max-height: 200px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* ========== 反馈评分 ========== */
        .feedback-section {
            background: var(--surface-alt);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .feedback-grid {
            display: grid;
            grid-template-columns: 300px 1fr;
            gap: 28px;
            align-items: center;
        }

        .feedback-score-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px;
            text-align: center;
        }

        .feedback-score-card .score-num {
            font-family: var(--font-display);
            font-size: 56px;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
        }

        .feedback-score-card .score-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 8px;
        }

        .feedback-score-card .score-stars {
            font-size: 22px;
            color: var(--accent);
            margin: 12px 0;
        }

        .feedback-comments {
            display: grid;
            gap: 10px;
        }

        .feedback-comment {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 16px 18px;
            transition: all var(--transition);
        }

        .feedback-comment:hover {
            border-color: var(--border-hover);
            background: var(--surface-hover);
        }

        .feedback-comment p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 6px;
        }

        .feedback-comment .comment-user {
            font-size: 12.5px;
            color: var(--text-dim);
        }

        /* ========== 转化表单 ========== */
        .convert-section {
            background: var(--bg);
        }

        .convert-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .convert-left h2 {
            font-family: var(--font-display);
            font-size: 28px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 12px;
        }

        .convert-left p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .convert-badges {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .convert-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-full);
            font-size: 12.5px;
            color: var(--text-muted);
        }

        .convert-badge .cb-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--success);
        }

        .convert-form {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow);
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-muted);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 11px 14px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--text);
            transition: all var(--transition);
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.15);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 80px;
        }

        .form-submit {
            width: 100%;
            padding: 13px 24px;
            font-size: 15px;
            margin-top: 6px;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #0B0D10;
            border-top: 1px solid var(--border);
            padding: 56px 0 28px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .nav-logo {
            margin-bottom: 16px;
            display: inline-flex;
        }

        .footer-brand p {
            font-size: 13.5px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .footer-col a {
            display: block;
            font-size: 13.5px;
            color: var(--text-muted);
            margin-bottom: 10px;
            transition: all var(--transition);
        }

        .footer-col a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-bottom {
            padding-top: 20px;
            border-top: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12.5px;
            color: var(--text-dim);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .container {
                width: min(100% - 32px, var(--container));
            }

            .hero-content {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .hero-dash {
                max-width: 520px;
            }

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

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

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

            .guarantee-strip {
                grid-template-columns: repeat(3, 1fr);
            }

            .guarantee-item:nth-child(3) {
                border-right: none;
            }
            .guarantee-item:nth-child(4),
            .guarantee-item:nth-child(5) {
                border-top: 1px solid var(--border);
            }
            .guarantee-item:nth-child(5) {
                border-right: none;
            }

            .feedback-grid {
                grid-template-columns: 1fr;
            }

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

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

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }

            .nav-status {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-wrapper {
                height: 62px;
            }

            .mobile-menu {
                top: 62px;
            }

            .hero-section {
                min-height: auto;
                padding: 56px 0 64px;
            }

            .hero-title {
                font-size: 32px;
            }

            .hero-desc {
                font-size: 15px;
            }

            .dash-metrics {
                grid-template-columns: 1fr 1fr;
            }

            .progress-ring-wrapper {
                flex-direction: column;
                align-items: flex-start;
                gap: 18px;
            }

            section {
                padding: var(--section-padding-mobile);
            }

            .section-title {
                font-size: 24px;
            }

            .compare-row {
                grid-template-columns: 1fr;
                gap: 8px;
            }

            .compare-bar-group {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }

            .bar-value {
                text-align: left;
                min-width: auto;
            }

            .milestone-timeline {
                padding-left: 22px;
            }

            .news-grid {
                grid-template-columns: 1fr;
            }

            .guarantee-strip {
                grid-template-columns: 1fr 1fr;
            }

            .guarantee-item {
                border-right: 1px solid var(--border);
                border-bottom: 1px solid var(--border);
            }
            .guarantee-item:nth-child(even) {
                border-right: none;
            }
            .guarantee-item:nth-child(5) {
                border-bottom: none;
            }

            .device-strip {
                justify-content: flex-start;
            }

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

        @media (max-width: 520px) {
            .container {
                width: min(100% - 20px, var(--container));
            }

            .hero-title {
                font-size: 26px;
            }

            .hero-cta {
                flex-direction: column;
                width: 100%;
            }

            .hero-cta .btn {
                width: 100%;
            }

            .service-grid {
                grid-template-columns: 1fr;
            }

            .collection-grid {
                grid-template-columns: 1fr;
            }

            .dash-metrics {
                grid-template-columns: 1fr;
            }

            .guarantee-strip {
                grid-template-columns: 1fr;
            }

            .guarantee-item {
                border-right: none;
                border-bottom: 1px solid var(--border);
            }

            .compare-row {
                padding: 14px;
            }

            .rank-cover {
                width: 60px;
                height: 40px;
            }

            .rank-num {
                font-size: 26px;
                width: 36px;
            }

            .convert-form {
                padding: 20px;
            }
        }

/* roulang page: category1 */
:root {
            --bg: #0D0F12;
            --surface: #161A20;
            --surface-alt: #1E232B;
            --surface-hover: #242B35;
            --border: #2B313B;
            --border-hover: #3A424F;
            --primary: #FF6B35;
            --primary-hover: #FF8555;
            --primary-dim: rgba(255, 107, 53, 0.15);
            --secondary: #00C2A8;
            --secondary-hover: #00D4B8;
            --secondary-dim: rgba(0, 194, 168, 0.15);
            --accent: #F4D03F;
            --accent-dim: rgba(244, 208, 63, 0.15);
            --success: #2DC653;
            --success-dim: rgba(45, 198, 83, 0.15);
            --warning: #F4D03F;
            --text: #F5F7FA;
            --text-muted: #A2A9B3;
            --text-dim: #6E7781;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-full: 999px;
            --shadow: 0 0 0 1px rgba(255, 255, 255, 0.04), 0 18px 40px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 0 0 1px rgba(255, 107, 53, 0.25), 0 24px 56px rgba(0, 0, 0, 0.48);
            --shadow-glow: 0 0 32px rgba(255, 107, 53, 0.22);
            --font-display: 'Barlow Condensed', 'DIN Alternate', 'Oswald', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Roboto Mono', 'Consolas', monospace;
            --container: 1200px;
            --section-padding: 72px 0;
            --section-padding-tablet: 52px 0;
            --section-padding-mobile: 40px 0;
            --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--primary);
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            width: min(100% - 48px, var(--container));
            margin-inline: auto;
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(13, 15, 18, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
        }

        .site-header.scrolled {
            background: rgba(13, 15, 18, 0.96);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.42);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            height: 70px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 20px;
            letter-spacing: 0.5px;
            color: var(--text);
            white-space: nowrap;
        }

        .nav-logo .logo-icon {
            width: 30px;
            height: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            border-radius: 8px;
            color: #fff;
            font-weight: 900;
            font-size: 16px;
            flex-shrink: 0;
        }

        .nav-logo:hover {
            color: var(--primary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: var(--radius-full);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--text);
            background: var(--surface-alt);
        }

        .nav-link.active {
            color: var(--primary);
            background: var(--primary-dim);
            font-weight: 600;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            white-space: nowrap;
        }

        .nav-status {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
        }

        .nav-status .status-dot {
            width: 8px;
            height: 8px;
            background: var(--success);
            border-radius: 50%;
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(45, 198, 83, 0.4);
            }
            50% {
                box-shadow: 0 0 0 6px rgba(45, 198, 83, 0);
            }
        }

        .nav-bell {
            position: relative;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--surface-alt);
            border-radius: var(--radius-full);
            font-size: 18px;
            color: var(--text-muted);
            transition: all var(--transition);
        }

        .nav-bell:hover {
            color: var(--text);
            background: var(--surface-hover);
        }

        .nav-bell .bell-dot {
            position: absolute;
            top: 8px;
            right: 8px;
            width: 8px;
            height: 8px;
            background: var(--primary);
            border-radius: 50%;
            border: 2px solid var(--bg);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-full);
            transition: all var(--transition);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

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

        .btn-primary:hover {
            background: var(--primary-hover);
            color: #fff;
            box-shadow: var(--shadow-glow);
            transform: translateY(-1px);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(255, 107, 53, 0.5);
            outline-offset: 2px;
        }

        .btn-secondary {
            background: var(--surface-alt);
            color: var(--text);
            border: 1px solid var(--border);
        }

        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-dim);
        }

        .btn-secondary:focus-visible {
            outline: 3px solid rgba(255, 107, 53, 0.4);
            outline-offset: 2px;
        }

        .btn-sm {
            padding: 7px 16px;
            font-size: 13px;
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            background: var(--surface-alt);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .nav-toggle:hover {
            background: var(--surface-hover);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb-section {
            padding: 28px 0 16px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .separator {
            color: var(--text-dim);
            font-size: 12px;
        }

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

        /* ========== Page Header ========== */
        .page-header {
            padding: 24px 0 40px;
        }

        .page-header h1 {
            font-family: var(--font-display);
            font-size: clamp(32px, 5vw, 52px);
            font-weight: 800;
            letter-spacing: 0.5px;
            line-height: 1.2;
            margin-bottom: 16px;
        }

        .page-header h1 .highlight {
            color: var(--primary);
        }

        .page-header p {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 720px;
            line-height: 1.7;
        }

        /* ========== Filter Toolbar ========== */
        .filter-section {
            padding: 0 0 32px;
        }

        .filter-toolbar {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            align-items: center;
            box-shadow: var(--shadow);
        }

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

        .filter-group .filter-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-muted);
            margin-right: 4px;
            white-space: nowrap;
        }

        .filter-btn {
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-muted);
            background: var(--surface-alt);
            border-radius: var(--radius-full);
            border: 1px solid transparent;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .filter-btn:hover {
            color: var(--text);
            border-color: var(--border-hover);
            background: var(--surface-hover);
        }

        .filter-btn.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            font-weight: 600;
        }

        .filter-select {
            background: var(--surface-alt);
            border: 1px solid var(--border);
            color: var(--text);
            padding: 6px 12px;
            font-size: 13px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all var(--transition);
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23A2A9B3' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 10px center;
            padding-right: 32px;
        }

        .filter-select:hover {
            border-color: var(--border-hover);
        }

        .filter-select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.2);
        }

        .filter-count {
            margin-left: auto;
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
        }

        .filter-count strong {
            color: var(--primary);
            font-weight: 700;
            font-size: 16px;
        }

        /* ========== Resource Grid ========== */
        .resource-section {
            padding: 16px 0 56px;
        }

        .section-heading {
            margin-bottom: 28px;
        }

        .section-heading h2 {
            font-family: var(--font-display);
            font-size: clamp(24px, 3.5vw, 32px);
            font-weight: 800;
            letter-spacing: 0.5px;
            line-height: 1.3;
            margin-bottom: 10px;
        }

        .section-heading h2 .heading-accent {
            color: var(--secondary);
        }

        .section-heading p {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 640px;
        }

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

        .resource-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
            position: relative;
        }

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

        .resource-card .card-cover {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--surface-alt);
        }

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

        .resource-card:hover .card-cover img {
            transform: scale(1.04);
        }

        .resource-card .card-cover::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60%;
            background: linear-gradient(to top, rgba(13, 15, 18, 0.8), transparent);
            pointer-events: none;
        }

        .resource-card .play-overlay {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 48px;
            height: 48px;
            background: rgba(255, 107, 53, 0.85);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            opacity: 0;
            transition: opacity var(--transition);
            z-index: 2;
        }

        .resource-card:hover .play-overlay {
            opacity: 1;
        }

        .resource-card .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 3;
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 10px;
            font-size: 11px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .badge-primary {
            background: rgba(255, 107, 53, 0.9);
            color: #fff;
        }

        .badge-secondary {
            background: rgba(0, 194, 168, 0.85);
            color: #fff;
        }

        .badge-success {
            background: rgba(45, 198, 83, 0.85);
            color: #fff;
        }

        .badge-warning {
            background: rgba(244, 208, 63, 0.9);
            color: #0D0F12;
        }

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

        .resource-card .card-title {
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 10px;
            transition: color var(--transition);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .resource-card:hover .card-title {
            color: var(--primary);
        }

        .resource-card .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 12px;
            color: var(--text-dim);
            flex-wrap: wrap;
        }

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

        .resource-card .card-meta .line-count {
            color: var(--secondary);
            font-weight: 600;
        }

        .resource-card .update-status {
            display: flex;
            align-items: center;
            gap: 5px;
            font-size: 12px;
            color: var(--success);
            font-weight: 500;
        }

        .resource-card .update-status .mini-dot {
            width: 6px;
            height: 6px;
            background: var(--success);
            border-radius: 50%;
        }

        .load-more-wrap {
            text-align: center;
            margin-top: 36px;
        }

        /* ========== Ranking Sidebar Section ========== */
        .ranking-section {
            padding: 48px 0 56px;
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .ranking-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .ranking-panel {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
        }

        .ranking-panel h3 {
            font-family: var(--font-display);
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .ranking-panel h3 .rank-icon {
            color: var(--primary);
        }

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

        .ranking-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 14px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            border-bottom: 1px solid var(--border);
        }

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

        .ranking-item:hover {
            background: var(--surface-alt);
        }

        .ranking-number {
            font-family: var(--font-display);
            font-size: 22px;
            font-weight: 800;
            color: var(--text-dim);
            min-width: 34px;
            text-align: center;
        }

        .ranking-item:nth-child(1) .ranking-number {
            color: var(--primary);
        }
        .ranking-item:nth-child(2) .ranking-number {
            color: var(--accent);
        }
        .ranking-item:nth-child(3) .ranking-number {
            color: var(--secondary);
        }

        .ranking-cover {
            width: 64px;
            height: 40px;
            border-radius: 6px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--surface-alt);
        }

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

        .ranking-info {
            flex: 1;
            min-width: 0;
        }

        .ranking-info .rank-title {
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            transition: color var(--transition);
        }

        .ranking-item:hover .rank-title {
            color: var(--primary);
        }

        .ranking-info .rank-tag {
            font-size: 12px;
            color: var(--text-dim);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .ranking-info .rank-tag .tag-chip {
            background: var(--surface-alt);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 11px;
        }

        /* ========== Update Calendar ========== */
        .calendar-section {
            padding: 56px 0;
        }

        .calendar-grid {
            display: grid;
            grid-template-columns: repeat(7, 1fr);
            gap: 8px;
            margin-top: 8px;
        }

        .calendar-day {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 12px 10px;
            text-align: center;
            transition: all var(--transition);
            min-height: 88px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 4px;
        }

        .calendar-day:hover {
            border-color: var(--border-hover);
            background: var(--surface-alt);
        }

        .calendar-day .day-number {
            font-family: var(--font-display);
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
        }

        .calendar-day .day-label {
            font-size: 11px;
            color: var(--text-dim);
        }

        .calendar-day.has-update {
            border-color: var(--secondary);
            background: var(--secondary-dim);
        }

        .calendar-day.has-update .day-number {
            color: var(--secondary);
        }

        .calendar-day.has-update .update-count {
            font-size: 10px;
            color: var(--secondary);
            font-weight: 600;
        }

        .calendar-day.is-today {
            border-color: var(--primary);
            background: var(--primary-dim);
            box-shadow: 0 0 20px rgba(255, 107, 53, 0.15);
        }

        .calendar-day.is-today .day-number {
            color: var(--primary);
        }

        .calendar-legend {
            display: flex;
            gap: 20px;
            margin-top: 16px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .calendar-legend span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .legend-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            display: inline-block;
        }

        .legend-dot.update {
            background: var(--secondary);
        }
        .legend-dot.today {
            background: var(--primary);
        }

        /* ========== Guide Section ========== */
        .guide-section {
            padding: 56px 0;
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

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

        .guide-step {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            transition: all var(--transition);
            position: relative;
        }

        .guide-step:hover {
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }

        .guide-step .step-number {
            font-family: var(--font-display);
            font-size: 40px;
            font-weight: 800;
            color: var(--primary);
            opacity: 0.3;
            position: absolute;
            top: 16px;
            right: 20px;
            line-height: 1;
        }

        .guide-step .step-icon {
            width: 44px;
            height: 44px;
            background: var(--primary-dim);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 14px;
        }

        .guide-step h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .guide-step p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== FAQ Section ========== */
        .faq-section {
            padding: 56px 0;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: var(--border-hover);
        }

        .faq-item.open {
            border-color: var(--primary);
            background: var(--surface-alt);
        }

        .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            transition: color var(--transition);
            width: 100%;
            text-align: left;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--surface-hover);
            border-radius: var(--radius-sm);
            font-size: 16px;
            color: var(--text-muted);
            flex-shrink: 0;
            transition: all var(--transition);
        }

        .faq-item.open .faq-icon {
            background: var(--primary);
            color: #fff;
        }

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

        .faq-item.open .faq-answer {
            max-height: 240px;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ========== Subscribe CTA ========== */
        .subscribe-section {
            padding: 56px 0 72px;
        }

        .subscribe-card {
            background: linear-gradient(135deg, var(--surface-alt), var(--surface));
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 32px;
            align-items: center;
            box-shadow: var(--shadow);
            position: relative;
            overflow: hidden;
        }

        .subscribe-card::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.12), transparent 70%);
            pointer-events: none;
        }

        .subscribe-card h3 {
            font-family: var(--font-display);
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .subscribe-card p {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 520px;
        }

        .subscribe-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }

        .subscribe-form input {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-full);
            padding: 12px 20px;
            font-size: 14px;
            color: var(--text);
            min-width: 220px;
            transition: all var(--transition);
        }

        .subscribe-form input::placeholder {
            color: var(--text-dim);
        }

        .subscribe-form input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.2);
        }

        .subscribe-form .badge-group {
            display: flex;
            gap: 8px;
            align-items: center;
            flex-wrap: wrap;
        }

        .metric-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 12px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-full);
            font-size: 12px;
            font-weight: 500;
            color: var(--text-muted);
        }

        .metric-badge .badge-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--success);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #0A0C0E;
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-top: 12px;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .footer-col a {
            display: block;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 10px;
            transition: color var(--transition);
        }

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

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

        /* ========== Responsive ========== */
        @media (max-width: 1023px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(13, 15, 18, 0.98);
                flex-direction: column;
                padding: 20px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                z-index: 999;
            }

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

            .nav-toggle {
                display: flex;
            }

            .nav-status {
                display: none;
            }

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

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

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

        @media (max-width: 767px) {
            .container {
                width: min(100% - 32px, var(--container));
            }

            :root {
                --section-padding: 40px 0;
                --section-padding-tablet: 36px 0;
            }

            .nav-wrapper {
                height: 60px;
                gap: 12px;
            }

            .nav-links {
                top: 60px;
            }

            .nav-logo {
                font-size: 17px;
            }

            .nav-logo .logo-icon {
                width: 26px;
                height: 26px;
                font-size: 13px;
                border-radius: 6px;
            }

            .nav-bell {
                display: none;
            }

            .btn {
                padding: 8px 16px;
                font-size: 13px;
            }

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

            .filter-toolbar {
                padding: 16px;
                gap: 12px 16px;
            }

            .filter-count {
                margin-left: 0;
                width: 100%;
            }

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

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

            .calendar-grid {
                grid-template-columns: repeat(7, 1fr);
                gap: 4px;
            }

            .calendar-day {
                min-height: 64px;
                padding: 8px 4px;
            }

            .calendar-day .day-number {
                font-size: 15px;
            }

            .calendar-day .day-label {
                font-size: 10px;
            }

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

            .subscribe-card {
                grid-template-columns: 1fr;
                padding: 28px 20px;
                gap: 20px;
            }

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

            .subscribe-form input {
                min-width: 0;
                width: 100%;
            }

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

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }

            .breadcrumb-section {
                padding: 16px 0 8px;
            }

            .page-header {
                padding: 16px 0 28px;
            }
        }

        @media (max-width: 520px) {
            .calendar-grid {
                gap: 3px;
            }

            .calendar-day {
                min-height: 52px;
                padding: 6px 2px;
            }

            .calendar-day .day-number {
                font-size: 13px;
            }
            .calendar-day .day-label {
                font-size: 9px;
            }
            .calendar-day .update-count {
                font-size: 8px;
            }
        }