/* roulang page: index */
:root {
            --primary: #1a3550;
            --primary-light: #264a6e;
            --primary-lighter: #345f8a;
            --accent: #0d7b6f;
            --accent-light: #0f9d8e;
            --accent-pale: #e0f5f2;
            --bg: #f6f8fa;
            --bg-white: #ffffff;
            --bg-alt: #edf1f5;
            --text: #1a1a2e;
            --text-strong: #0f1724;
            --text-muted: #5e6f82;
            --text-light: #8899ab;
            --border: #dde3ea;
            --border-light: #eef2f6;
            --border-lighter: #f4f7fa;
            --radius: 10px;
            --radius-sm: 6px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 2px rgba(15,23,36,0.04);
            --shadow-sm: 0 1px 3px rgba(15,23,36,0.05), 0 1px 2px rgba(15,23,36,0.04);
            --shadow: 0 2px 8px rgba(15,23,36,0.06), 0 1px 3px rgba(15,23,36,0.04);
            --shadow-md: 0 6px 18px rgba(15,23,36,0.08), 0 2px 6px rgba(15,23,36,0.04);
            --shadow-lg: 0 14px 36px rgba(15,23,36,0.10), 0 4px 12px rgba(15,23,36,0.05);
            --shadow-xl: 0 22px 50px rgba(15,23,36,0.13), 0 6px 18px rgba(15,23,36,0.06);
            --transition-fast: 0.18s ease;
            --transition: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", "Consolas", monospace;
        }

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

        html {
            font-size: 16px;
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.65;
            color: var(--text);
            background: var(--bg);
            margin: 0;
            padding: 0;
            min-height: 100vh;
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent);
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 3px;
        }

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

        button,
        input {
            font-family: inherit;
        }
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .container--narrow {
            max-width: 960px;
        }
        .container--wide {
            max-width: 1320px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-xs);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 0 20px;
            max-width: 1320px;
            margin: 0 auto;
            height: 60px;
            position: relative;
        }
        .nav-logo-group {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }
        .nav-logo-icon {
            width: 34px;
            height: 34px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .nav-logo-text {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-strong);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .nav-logo-text a {
            color: var(--text-strong);
        }
        .nav-logo-text a:hover {
            color: var(--accent);
        }
        .nav-channels {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }
        .nav-channels a {
            display: inline-flex;
            align-items: center;
            padding: 8px 15px;
            border-radius: 20px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-channels a:hover {
            color: var(--text-strong);
            background: var(--bg-alt);
        }
        .nav-channels a.active {
            color: var(--primary);
            background: #e8edf4;
            font-weight: 600;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-search {
            position: relative;
            display: flex;
            align-items: center;
        }
        .nav-search input {
            width: 180px;
            height: 38px;
            padding: 0 36px 0 14px;
            border: 1px solid var(--border);
            border-radius: 20px;
            font-size: 0.88rem;
            color: var(--text);
            background: var(--bg);
            transition: all var(--transition-fast);
        }
        .nav-search input:focus {
            outline: none;
            border-color: var(--accent);
            background: var(--bg-white);
            box-shadow: 0 0 0 3px rgba(13,123,111,0.08);
            width: 220px;
        }
        .nav-search input::placeholder {
            color: var(--text-light);
        }
        .nav-search-icon {
            position: absolute;
            right: 12px;
            color: var(--text-light);
            font-size: 0.85rem;
            pointer-events: none;
        }
        .nav-btn-outline {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 0.88rem;
            font-weight: 500;
            border: 1.5px solid var(--border);
            color: var(--text);
            background: transparent;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-btn-outline:hover {
            border-color: var(--primary-light);
            color: var(--primary);
            background: #f8fafc;
        }
        .nav-btn-primary {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            border-radius: 20px;
            font-size: 0.88rem;
            font-weight: 600;
            border: none;
            color: #fff;
            background: var(--accent);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            box-shadow: 0 2px 8px rgba(13,123,111,0.25);
        }
        .nav-btn-primary:hover {
            background: #0b6e63;
            box-shadow: 0 4px 14px rgba(13,123,111,0.35);
            color: #fff;
            transform: translateY(-1px);
        }
        .nav-mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            cursor: pointer;
            padding: 6px;
            line-height: 1;
        }
        .nav-mobile-menu {
            display: none;
            position: absolute;
            top: 60px;
            left: 0;
            right: 0;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            flex-direction: column;
            padding: 12px 20px;
            gap: 4px;
            z-index: 99;
        }
        .nav-mobile-menu.is-open {
            display: flex;
        }
        .nav-mobile-menu a {
            padding: 10px 14px;
            border-radius: 8px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text);
            transition: all var(--transition-fast);
        }
        .nav-mobile-menu a:hover {
            background: var(--bg-alt);
            color: var(--primary);
        }
        .nav-mobile-menu a.active {
            background: #e8edf4;
            color: var(--primary);
            font-weight: 600;
        }
        .nav-mobile-search {
            margin-top: 6px;
            padding: 0 6px;
        }
        .nav-mobile-search input {
            width: 100%;
            height: 40px;
            padding: 0 14px;
            border: 1px solid var(--border);
            border-radius: 20px;
            font-size: 0.9rem;
            background: var(--bg);
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            background: var(--primary) url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26,53,80,0.88) 0%, rgba(13,123,111,0.72) 60%, rgba(15,157,142,0.55) 100%);
            z-index: 1;
        }
        .hero-pattern {
            position: absolute;
            inset: 0;
            z-index: 1;
            opacity: 0.06;
            background-image: radial-gradient(circle at 20% 50%, #fff 1px, transparent 1px),
                              radial-gradient(circle at 80% 30%, #fff 1px, transparent 1px),
                              radial-gradient(circle at 50% 80%, #fff 1px, transparent 1px);
            background-size: 60px 60px, 80px 80px, 50px 50px;
            background-position: 0 0, 20px 20px, 10px 40px;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            padding: 60px 20px;
            max-width: 700px;
        }
        .hero-badge {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            background: rgba(255,255,255,0.18);
            color: #fff;
            backdrop-filter: blur(6px);
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }
        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .hero-desc {
            font-size: 1.12rem;
            color: rgba(255,255,255,0.88);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 520px;
        }
        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 28px;
            font-size: 1rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            background: #fff;
            color: var(--primary);
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(0,0,0,0.15);
        }
        .btn-hero-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0,0,0,0.22);
            color: var(--accent);
        }
        .btn-hero-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 28px;
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.5);
            transition: all var(--transition);
        }
        .btn-hero-secondary:hover {
            background: rgba(255,255,255,0.12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: 64px 20px;
        }
        .section--alt {
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }
        .section--dark {
            background: var(--primary);
            color: #fff;
        }
        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--accent);
            margin-bottom: 8px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto;
        }
        .section--dark .section-title {
            color: #fff;
        }
        .section--dark .section-subtitle {
            color: rgba(255,255,255,0.7);
        }
        .section--dark .section-label {
            color: var(--accent-light);
        }

        /* ========== KPI STATS ========== */
        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .kpi-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .kpi-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 20%;
            right: 20%;
            height: 3px;
            background: var(--accent-pale);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .kpi-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--border);
        }
        .kpi-card:hover::after {
            background: var(--accent);
            left: 10%;
            right: 10%;
        }
        .kpi-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
            line-height: 1;
            margin-bottom: 6px;
            font-family: var(--font-mono);
        }
        .kpi-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        .kpi-desc {
            font-size: 0.78rem;
            color: var(--text-light);
            margin-top: 4px;
        }

        /* ========== CARDS ========== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .card-grid--2col {
            grid-template-columns: repeat(2, 1fr);
        }
        .card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--border);
        }
        .card-image {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            background: var(--bg-alt);
        }
        .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--accent-pale);
            color: var(--accent);
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .card-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            flex: 1;
            line-height: 1.55;
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            margin-top: 12px;
            font-weight: 600;
            font-size: 0.88rem;
            color: var(--primary-light);
            transition: all var(--transition-fast);
        }
        .card-link:hover {
            color: var(--accent);
            gap: 8px;
        }
        .card-link i {
            font-size: 0.7rem;
            transition: transform var(--transition-fast);
        }
        .card-link:hover i {
            transform: translateX(3px);
        }

        /* ========== LIST BLOCK ========== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border-lighter);
            transition: all var(--transition-fast);
            text-decoration: none;
            color: inherit;
        }
        .news-item:hover {
            background: #fafcfd;
            padding-left: 10px;
            padding-right: 10px;
            margin-left: -10px;
            margin-right: -10px;
            border-radius: 8px;
        }
        .news-thumb {
            width: 100px;
            height: 68px;
            border-radius: 8px;
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-alt);
        }
        .news-info {
            flex: 1;
            min-width: 0;
        }
        .news-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-strong);
            margin-bottom: 4px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-summary {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 5px;
            font-size: 0.78rem;
            color: var(--text-light);
        }
        .news-cat {
            padding: 2px 8px;
            border-radius: 10px;
            font-size: 0.72rem;
            font-weight: 600;
            background: var(--accent-pale);
            color: var(--accent);
        }
        .news-empty {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-muted);
            font-size: 0.95rem;
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }

        /* ========== PROCESS ========== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: process;
        }
        .process-step {
            text-align: center;
            position: relative;
            padding: 28px 16px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            counter-increment: process;
        }
        .process-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .process-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
        }
        .process-step-title {
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-strong);
            margin-bottom: 5px;
        }
        .process-step-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border-light);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 18px 0;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-strong);
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            transition: color var(--transition-fast);
            gap: 12px;
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question i {
            transition: transform var(--transition-fast);
            color: var(--text-light);
            font-size: 0.8rem;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
            color: var(--accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .faq-answer.is-open {
            max-height: 400px;
            padding-bottom: 16px;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(160deg, var(--primary) 0%, #1e4d6e 50%, #0d7b6f 100%);
            color: #fff;
            text-align: center;
            padding: 64px 20px;
            border-radius: 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(circle at 30% 70%, rgba(255,255,255,0.04) 1px, transparent 1px);
            background-size: 40px 40px;
            opacity: 0.5;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            max-width: 600px;
            margin: 0 auto;
        }
        .cta-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .cta-desc {
            font-size: 1rem;
            color: rgba(255,255,255,0.8);
            margin-bottom: 28px;
            line-height: 1.6;
        }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 28px;
            font-size: 1.05rem;
            font-weight: 600;
            background: #fff;
            color: var(--primary);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 6px 20px rgba(0,0,0,0.2);
        }
        .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 28px rgba(0,0,0,0.28);
            color: var(--accent);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #111b28;
            color: rgba(255,255,255,0.7);
            padding: 48px 20px 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            max-width: 1200px;
            margin: 0 auto 32px;
        }
        .footer-brand-name {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .footer-brand-desc {
            font-size: 0.88rem;
            line-height: 1.6;
            color: rgba(255,255,255,0.55);
        }
        .footer-col-title {
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: rgba(255,255,255,0.85);
            margin-bottom: 14px;
        }
        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: rgba(255,255,255,0.55);
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.4);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .nav-search input {
                width: 130px;
            }
            .nav-search input:focus {
                width: 160px;
            }
            .nav-channels a {
                padding: 8px 10px;
                font-size: 0.85rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
        }
        @media (max-width: 768px) {
            .nav-channels {
                display: none;
            }
            .nav-search {
                display: none;
            }
            .nav-btn-outline {
                display: none;
            }
            .nav-mobile-toggle {
                display: block;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .card-grid--2col {
                grid-template-columns: 1fr;
            }
            .kpi-grid {
                grid-template-columns: 1fr 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .hero {
                min-height: 400px;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero-content {
                padding: 40px 16px;
            }
            .section {
                padding: 40px 16px;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .news-thumb {
                width: 70px;
                height: 50px;
            }
            .news-title {
                font-size: 0.9rem;
            }
            .kpi-number {
                font-size: 1.8rem;
            }
            .cta-title {
                font-size: 1.5rem;
            }
            .nav-wrapper {
                height: 54px;
            }
            .nav-logo-text {
                font-size: 1.05rem;
            }
            .nav-logo-icon {
                width: 28px;
                height: 28px;
                font-size: 13px;
                border-radius: 6px;
            }
        }
        @media (max-width: 520px) {
            .kpi-grid {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .hero {
                min-height: 340px;
            }
            .hero-title {
                font-size: 1.5rem;
            }
            .hero-btns {
                flex-direction: column;
            }
            .btn-hero-primary,
            .btn-hero-secondary {
                width: 100%;
                justify-content: center;
            }
            .news-item {
                flex-direction: column;
                gap: 10px;
            }
            .news-thumb {
                width: 100%;
                height: 120px;
            }
            .section {
                padding: 32px 12px;
            }
            .container {
                padding-left: 12px;
                padding-right: 12px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #1a3a5c;
            --color-primary-hover: #122840;
            --color-accent: #3a7ca5;
            --color-accent-light: #4a9db5;
            --color-accent-subtle: #e8f2f7;
            --color-teal: #2d8a7e;
            --color-teal-light: #eaf7f5;
            --color-bg: #f6f8fa;
            --color-surface: #ffffff;
            --color-text: #1e2d3d;
            --color-text-secondary: #5a6b7c;
            --color-text-muted: #8899aa;
            --color-border: #dde4eb;
            --color-border-light: #eef2f6;
            --color-success: #2d8a7e;
            --color-warning: #c28b2e;
            --color-danger: #c0392b;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(26,58,92,0.06);
            --shadow-md: 0 4px 16px rgba(26,58,92,0.08);
            --shadow-lg: 0 8px 32px rgba(26,58,92,0.10);
            --shadow-card: 0 2px 8px rgba(26,58,92,0.05), 0 6px 20px rgba(26,58,92,0.04);
            --shadow-card-hover: 0 4px 16px rgba(26,58,92,0.10), 0 12px 32px rgba(26,58,92,0.06);
            --font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Monaco', 'Courier New', monospace;
            --spacing-xs: 6px;
            --spacing-sm: 12px;
            --spacing-md: 20px;
            --spacing-lg: 32px;
            --spacing-xl: 48px;
            --spacing-2xl: 64px;
            --header-height: 64px;
            --max-width: 1200px;
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --transition-smooth: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.6;
            color: var(--color-text);
            background: var(--color-bg);
            margin: 0;
            padding: 0;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary);
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent-light);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

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

        button,
        input {
            font-family: inherit;
        }
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent-light);
            outline-offset: 2px;
        }

        h1, h2, h3, h4, h5, h6 {
            margin-top: 0;
            line-height: 1.3;
            color: var(--color-text);
            font-weight: 700;
        }
        h1 { font-size: 2.25rem; }
        h2 { font-size: 1.75rem; }
        h3 { font-size: 1.25rem; }
        h4 { font-size: 1.1rem; }

        p { margin-top: 0; }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: var(--spacing-md);
            padding-right: var(--spacing-md);
        }
        @media (min-width: 768px) {
            .container {
                padding-left: var(--spacing-lg);
                padding-right: var(--spacing-lg);
            }
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
            gap: var(--spacing-md);
            height: 100%;
        }
        @media (min-width: 768px) {
            .header-inner {
                padding: 0 var(--spacing-lg);
            }
        }

        /* Logo */
        .logo-area {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-shrink: 0;
            text-decoration: none;
            color: var(--color-primary);
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: -0.02em;
            white-space: nowrap;
        }
        .logo-area:hover {
            color: var(--color-primary);
            opacity: 0.85;
        }
        .logo-icon {
            width: 34px;
            height: 34px;
            background: var(--color-primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
        }

        /* Nav channels */
        .nav-channels {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
        }
        .nav-channels a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            color: var(--color-text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            text-decoration: none;
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
        }
        .nav-channels a:hover {
            color: var(--color-primary);
            background: var(--color-accent-subtle);
        }
        .nav-channels a.active {
            color: var(--color-primary);
            background: var(--color-accent-subtle);
            font-weight: 700;
        }
        .nav-channels a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2.5px;
            background: var(--color-accent);
            border-radius: 2px;
        }

        /* Header actions */
        .header-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: 20px;
            padding: 6px 14px;
            gap: 6px;
            transition: all var(--transition-fast);
        }
        .search-box:hover,
        .search-box:focus-within {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(58,124,165,0.08);
        }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 0.9rem;
            width: 140px;
            color: var(--color-text);
        }
        .search-box input::placeholder {
            color: var(--color-text-muted);
        }
        .search-box .fa-search {
            color: var(--color-text-muted);
            font-size: 0.85rem;
        }
        .btn-login {
            background: transparent;
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 500;
            cursor: pointer;
            white-space: nowrap;
            transition: all var(--transition-fast);
        }
        .btn-login:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: var(--color-accent-subtle);
        }
        .btn-cta-header {
            background: var(--color-accent);
            border: none;
            color: #fff;
            padding: 8px 20px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            white-space: nowrap;
            transition: all var(--transition-fast);
            box-shadow: 0 2px 8px rgba(58,124,165,0.25);
        }
        .btn-cta-header:hover {
            background: var(--color-primary);
            box-shadow: 0 4px 16px rgba(26,58,92,0.3);
            transform: translateY(-1px);
            color: #fff;
        }

        /* Mobile menu toggle */
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-text);
            cursor: pointer;
            padding: 4px;
            line-height: 1;
        }
        @media (max-width: 860px) {
            .mobile-menu-toggle {
                display: block;
            }
            .nav-channels {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--color-surface);
                flex-direction: column;
                padding: var(--spacing-sm);
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-md);
                gap: 2px;
                z-index: 999;
            }
            .nav-channels.mobile-open {
                display: flex;
            }
            .nav-channels a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                width: 100%;
            }
            .nav-channels a.active::after {
                display: none;
            }
            .search-box input {
                width: 100px;
            }
            .btn-login {
                padding: 8px 14px;
                font-size: 0.85rem;
            }
            .btn-cta-header {
                padding: 8px 14px;
                font-size: 0.85rem;
            }
        }
        @media (max-width: 520px) {
            .search-box {
                display: none;
            }
            .btn-login {
                display: none;
            }
            .header-inner {
                gap: var(--spacing-xs);
            }
        }

        /* ===== Section spacing ===== */
        .section {
            padding: var(--spacing-xl) 0;
        }
        .section-sm {
            padding: var(--spacing-lg) 0;
        }
        .section-lg {
            padding: var(--spacing-2xl) 0;
        }
        @media (max-width: 768px) {
            .section { padding: var(--spacing-lg) 0; }
            .section-lg { padding: var(--spacing-xl) 0; }
        }

        /* ===== Category Banner ===== */
        .category-banner {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: var(--spacing-2xl) 0;
            min-height: 280px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26,58,92,0.88) 0%, rgba(26,58,92,0.72) 40%, rgba(45,138,126,0.55) 100%);
            z-index: 1;
        }
        .category-banner .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.75);
            margin-bottom: var(--spacing-md);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: rgba(255,255,255,0.9);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb .separator {
            color: rgba(255,255,255,0.5);
            font-size: 0.75rem;
        }
        .breadcrumb .current {
            color: #fff;
            font-weight: 500;
        }
        .category-banner h1 {
            color: #fff;
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.02em;
        }
        .category-banner .banner-desc {
            color: rgba(255,255,255,0.85);
            font-size: 1.1rem;
            max-width: 600px;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .category-banner {
                min-height: 220px;
                padding: var(--spacing-xl) 0;
            }
            .category-banner h1 {
                font-size: 1.8rem;
            }
            .category-banner .banner-desc {
                font-size: 1rem;
            }
        }

        /* ===== KPI仪表盘 ===== */
        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }
        @media (max-width: 1024px) {
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .kpi-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-sm);
            }
        }
        .kpi-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg) var(--spacing-md);
            text-align: center;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }
        .kpi-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-teal));
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }
        .kpi-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }
        .kpi-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: var(--color-accent-subtle);
            color: var(--color-accent);
            font-size: 1.3rem;
            margin-bottom: var(--spacing-sm);
        }
        .kpi-value {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-primary);
            font-family: var(--font-mono);
            letter-spacing: -0.03em;
            line-height: 1.1;
            margin-bottom: 4px;
        }
        .kpi-label {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        /* ===== Section header ===== */
        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: var(--spacing-lg);
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }
        .section-header h2 {
            margin-bottom: 0;
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--color-primary);
        }
        .section-header .view-all {
            font-size: 0.9rem;
            color: var(--color-accent);
            font-weight: 600;
            text-decoration: none;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }
        .section-header .view-all:hover {
            color: var(--color-primary);
        }
        .section-header .view-all i {
            margin-left: 4px;
            font-size: 0.8rem;
            transition: transform var(--transition-fast);
        }
        .section-header .view-all:hover i {
            transform: translateX(3px);
        }

        /* ===== 赛事数据卡片网格 ===== */
        .event-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        @media (max-width: 1024px) {
            .event-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 600px) {
            .event-grid {
                grid-template-columns: 1fr;
            }
        }
        .event-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .event-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--color-border);
        }
        .event-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-bottom: 1px solid var(--color-border-light);
        }
        .event-card-body {
            padding: var(--spacing-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .event-card-tag {
            display: inline-block;
            background: var(--color-teal-light);
            color: var(--color-teal);
            font-size: 0.78rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 20px;
            width: fit-content;
            margin-bottom: var(--spacing-xs);
        }
        .event-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--color-text);
            line-height: 1.4;
        }
        .event-card p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            flex: 1;
            margin-bottom: var(--spacing-sm);
        }
        .event-card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            border-top: 1px solid var(--color-border-light);
            padding-top: var(--spacing-sm);
            margin-top: auto;
        }
        .event-card-meta .read-more {
            color: var(--color-accent);
            font-weight: 600;
            text-decoration: none;
            font-size: 0.85rem;
        }
        .event-card-meta .read-more:hover {
            color: var(--color-primary);
        }

        /* ===== 排行榜表格 ===== */
        .rank-table-wrapper {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }
        .rank-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        .rank-table thead th {
            background: var(--color-primary);
            color: #fff;
            padding: 14px 16px;
            font-weight: 600;
            font-size: 0.85rem;
            text-align: left;
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .rank-table tbody td {
            padding: 13px 16px;
            border-bottom: 1px solid var(--color-border-light);
            color: var(--color-text-secondary);
            vertical-align: middle;
        }
        .rank-table tbody tr {
            transition: background var(--transition-fast);
        }
        .rank-table tbody tr:hover {
            background: var(--color-accent-subtle);
        }
        .rank-table tbody tr:last-child td {
            border-bottom: none;
        }
        .rank-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            font-weight: 700;
            font-size: 0.9rem;
            color: #fff;
            background: var(--color-text-muted);
        }
        .rank-badge.top-1 {
            background: #e2b04a;
            box-shadow: 0 2px 8px rgba(226,176,74,0.35);
        }
        .rank-badge.top-2 {
            background: #a0aab4;
            box-shadow: 0 2px 8px rgba(160,170,180,0.35);
        }
        .rank-badge.top-3 {
            background: #c28b5e;
            box-shadow: 0 2px 8px rgba(194,139,94,0.35);
        }
        .speed-highlight {
            font-weight: 700;
            color: var(--color-primary);
            font-family: var(--font-mono);
            font-size: 1rem;
        }
        .rank-table-responsive {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }
        @media (max-width: 600px) {
            .rank-table {
                font-size: 0.85rem;
            }
            .rank-table thead th,
            .rank-table tbody td {
                padding: 10px 12px;
            }
        }

        /* ===== 数据来源说明 ===== */
        .source-block {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            padding: var(--spacing-lg) var(--spacing-lg);
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-md);
            box-shadow: var(--shadow-sm);
        }
        .source-icon {
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: var(--color-accent-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 1.4rem;
        }
        .source-content h3 {
            margin-bottom: 6px;
            font-size: 1.1rem;
        }
        .source-content p {
            color: var(--color-text-secondary);
            font-size: 0.95rem;
            margin-bottom: 0;
        }
        @media (max-width: 600px) {
            .source-block {
                flex-direction: column;
                gap: var(--spacing-sm);
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-border);
        }
        .faq-question {
            padding: var(--spacing-md) var(--spacing-md);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            color: var(--color-text);
            font-size: 1rem;
            user-select: none;
            transition: background var(--transition-fast);
            gap: var(--spacing-sm);
        }
        .faq-question:hover {
            background: var(--color-accent-subtle);
        }
        .faq-question i {
            color: var(--color-text-muted);
            font-size: 0.85rem;
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 var(--spacing-md);
            color: var(--color-text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 var(--spacing-md) var(--spacing-md);
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--color-primary) 0%, #0f263d 100%);
            border-radius: var(--radius-xl);
            padding: var(--spacing-xl) var(--spacing-lg);
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-block::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255,255,255,0.03);
            pointer-events: none;
        }
        .cta-block h2 {
            color: #fff;
            font-size: 1.7rem;
            margin-bottom: var(--spacing-sm);
            position: relative;
            z-index: 1;
        }
        .cta-block p {
            color: rgba(255,255,255,0.78);
            font-size: 1rem;
            max-width: 500px;
            margin: 0 auto var(--spacing-lg);
            position: relative;
            z-index: 1;
        }
        .btn-cta-large {
            display: inline-block;
            background: var(--color-accent-light);
            color: #fff;
            padding: 14px 32px;
            border-radius: 28px;
            font-weight: 700;
            font-size: 1rem;
            text-decoration: none;
            transition: all var(--transition-base);
            box-shadow: 0 4px 20px rgba(74,157,181,0.35);
            position: relative;
            z-index: 1;
            border: none;
            cursor: pointer;
        }
        .btn-cta-large:hover {
            background: #fff;
            color: var(--color-primary);
            box-shadow: 0 8px 28px rgba(255,255,255,0.25);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255,255,255,0.75);
            padding: var(--spacing-xl) 0 var(--spacing-lg);
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        .footer-brand-name {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.01em;
        }
        .footer-brand-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .footer-col-title {
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-sm);
            font-size: 0.95rem;
        }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.65);
            text-decoration: none;
            font-size: 0.9rem;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-bottom {
            max-width: var(--max-width);
            margin: var(--spacing-lg) auto 0;
            padding: var(--spacing-md) var(--spacing-md) 0;
            border-top: 1px solid rgba(255,255,255,0.12);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            font-size: 0.82rem;
            color: rgba(255,255,255,0.45);
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-0 { margin-top: 0; }
        .mb-0 { margin-bottom: 0; }
        .mb-sm { margin-bottom: var(--spacing-sm); }
        .mb-md { margin-bottom: var(--spacing-md); }
        .mb-lg { margin-bottom: var(--spacing-lg); }
        .bg-white { background: var(--color-surface); }
        .bg-subtle { background: var(--color-accent-subtle); }

/* roulang page: article */
:root {
            --color-primary: #1e3a5f;
            --color-primary-deep: #0f2440;
            --color-accent: #2e8b7f;
            --color-accent-light: #3ca89a;
            --color-accent-pale: #e8f5f2;
            --color-bg: #f7f8fa;
            --color-surface: #ffffff;
            --color-text: #1a1a2e;
            --color-text-secondary: #5a6070;
            --color-text-muted: #88909e;
            --color-border: #e2e5ea;
            --color-border-light: #eef0f3;
            --color-tag-bg: #edf1f7;
            --color-tag-text: #3d5068;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
            --shadow-card: 0 2px 8px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.04);
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --font-mono: 'SF Mono', 'Menlo', 'Consolas', 'Courier New', monospace;
        }

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

        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
        }

        a { color: var(--color-accent); text-decoration: none; transition: color var(--transition-fast); }
        a:hover { color: var(--color-accent-light); }
        a:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; border-radius: 3px; }

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

        button, .button {
            cursor: pointer;
            font-family: var(--font-sans);
            transition: all var(--transition-base);
            border: none;
            outline: none;
        }
        button:focus-visible, .button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        input {
            font-family: var(--font-sans);
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        input:focus-visible {
            outline: none;
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(46,139,127,0.12);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .container-narrow {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header & Navigation */
        .site-header {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            gap: 16px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }
        .nav-logo i { color: var(--color-accent); font-size: 1.3rem; }
        .nav-logo:hover { color: var(--color-primary-deep); }
        .nav-channels {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
            overflow-x: auto;
            white-space: nowrap;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-channels::-webkit-scrollbar { display: none; }
        .nav-channels a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            letter-spacing: 0.01em;
        }
        .nav-channels a:hover {
            color: var(--color-primary);
            background: var(--color-accent-pale);
        }
        .nav-channels a.active {
            color: var(--color-accent);
            background: var(--color-accent-pale);
            font-weight: 600;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-search {
            position: relative;
            display: flex;
            align-items: center;
        }
        .nav-search input {
            width: 180px;
            height: 38px;
            padding: 0 36px 0 14px;
            border: 1px solid var(--color-border);
            border-radius: 20px;
            font-size: 0.88rem;
            background: var(--color-bg);
            color: var(--color-text);
            transition: all var(--transition-base);
        }
        .nav-search input:focus {
            width: 220px;
            border-color: var(--color-accent);
            background: var(--color-surface);
            box-shadow: 0 0 0 3px rgba(46,139,127,0.08);
        }
        .nav-search button {
            position: absolute;
            right: 6px;
            background: none;
            border: none;
            color: var(--color-text-muted);
            padding: 6px 8px;
            font-size: 0.9rem;
            cursor: pointer;
        }
        .nav-search button:hover { color: var(--color-accent); }
        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            background: var(--color-accent);
            color: #fff;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.88rem;
            white-space: nowrap;
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
        }
        .btn-nav-cta:hover {
            background: var(--color-accent-light);
            color: #fff;
            box-shadow: 0 4px 14px rgba(46,139,127,0.3);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--color-text-secondary);
            cursor: pointer;
            padding: 6px;
        }

        @media (max-width: 1024px) {
            .nav-search input { width: 140px; }
            .nav-search input:focus { width: 170px; }
            .nav-channels a { padding: 8px 11px; font-size: 0.85rem; }
        }
        @media (max-width: 768px) {
            .header-inner { height: 54px; gap: 8px; }
            .nav-channels {
                display: none;
                position: absolute;
                top: 54px;
                left: 0;
                right: 0;
                background: var(--color-surface);
                flex-direction: row;
                flex-wrap: nowrap;
                overflow-x: auto;
                padding: 8px 12px;
                gap: 2px;
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-md);
                z-index: 99;
            }
            .nav-channels.open { display: flex; }
            .nav-channels a { padding: 7px 14px; font-size: 0.84rem; border-radius: 15px; }
            .nav-search { display: none; }
            .mobile-menu-toggle { display: block; }
            .btn-nav-cta { padding: 7px 14px; font-size: 0.82rem; }
        }
        @media (max-width: 520px) {
            .header-inner { padding: 0 4px; }
            .nav-logo { font-size: 1.05rem; }
            .btn-nav-cta { padding: 6px 12px; font-size: 0.78rem; gap: 4px; }
            .btn-nav-cta span { display: none; }
            .btn-nav-cta i { margin: 0; }
        }

        /* Page Banner */
        .page-banner {
            position: relative;
            background: url('<?php echo $bannerBg; ?>') center/cover no-repeat;
            min-height: 260px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,36,64,0.88) 0%, rgba(30,58,95,0.78) 40%, rgba(46,139,127,0.55) 100%);
            z-index: 1;
        }
        .page-banner-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 40px 0;
        }
        .page-banner-tag {
            display: inline-block;
            padding: 5px 14px;
            background: rgba(255,255,255,0.18);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            border: 1px solid rgba(255,255,255,0.25);
            border-radius: 20px;
            color: #fff;
            font-size: 0.82rem;
            font-weight: 500;
            letter-spacing: 0.03em;
            margin-bottom: 14px;
        }
        .page-banner h1 {
            color: #fff;
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
            max-width: 750px;
        }
        .page-banner-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px;
            color: rgba(255,255,255,0.8);
            font-size: 0.9rem;
        }
        .page-banner-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .page-banner-meta i { font-size: 0.82rem; opacity: 0.8; }

        @media (max-width: 768px) {
            .page-banner { min-height: 200px; }
            .page-banner h1 { font-size: 1.55rem; }
            .page-banner-content { padding: 28px 0; }
        }
        @media (max-width: 520px) {
            .page-banner { min-height: 170px; }
            .page-banner h1 { font-size: 1.3rem; }
            .page-banner-meta { font-size: 0.78rem; gap: 10px; }
        }

        /* Breadcrumb */
        .breadcrumb-wrap {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            padding: 12px 0;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }
        .breadcrumb a { color: var(--color-text-secondary); }
        .breadcrumb a:hover { color: var(--color-accent); }
        .breadcrumb .separator { color: var(--color-border); user-select: none; }
        .breadcrumb .current { color: var(--color-text); font-weight: 500; }

        /* Article Layout */
        .article-section {
            padding: 40px 0 50px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            align-items: start;
        }
        .article-main { min-width: 0; }

        /* Featured Image */
        .article-featured-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: 28px;
            box-shadow: var(--shadow-md);
        }
        .article-featured-img img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* Article Body */
        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--color-text);
            word-break: break-word;
        }
        .article-body h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 32px 0 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--color-accent-pale);
        }
        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--color-primary);
            margin: 26px 0 12px;
        }
        .article-body p {
            margin-bottom: 16px;
        }
        .article-body ul, .article-body ol {
            margin: 12px 0 20px 20px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body blockquote {
            border-left: 4px solid var(--color-accent);
            background: var(--color-accent-pale);
            padding: 16px 20px;
            margin: 20px 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--color-primary);
            font-style: italic;
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 16px 0;
        }
        .article-body strong {
            color: var(--color-primary);
            font-weight: 600;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 0.92rem;
        }
        .article-body table th,
        .article-body table td {
            border: 1px solid var(--color-border);
            padding: 10px 14px;
            text-align: left;
        }
        .article-body table th {
            background: var(--color-accent-pale);
            color: var(--color-primary);
            font-weight: 600;
        }
        .article-body code {
            background: #f0f2f5;
            padding: 2px 7px;
            border-radius: 4px;
            font-family: var(--font-mono);
            font-size: 0.9em;
            color: var(--color-primary-deep);
        }
        @media (max-width: 768px) {
            .article-body { font-size: 0.98rem; line-height: 1.75; }
            .article-body h2 { font-size: 1.3rem; }
            .article-body h3 { font-size: 1.1rem; }
        }

        /* Not Found */
        .article-not-found {
            text-align: center;
            padding: 60px 20px;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
        }
        .article-not-found .nf-icon {
            font-size: 3.5rem;
            color: var(--color-text-muted);
            margin-bottom: 18px;
        }
        .article-not-found h3 {
            font-size: 1.4rem;
            color: var(--color-primary);
            margin-bottom: 10px;
        }
        .article-not-found p {
            color: var(--color-text-secondary);
            margin-bottom: 20px;
        }

        /* Sidebar */
        .article-sidebar {
            position: sticky;
            top: 80px;
        }
        .sidebar-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 22px 20px;
            margin-bottom: 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
        }
        .sidebar-card-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--color-accent-pale);
            letter-spacing: 0.02em;
        }
        .sidebar-cat-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .sidebar-cat-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            background: var(--color-bg);
            color: var(--color-text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition-fast);
        }
        .sidebar-cat-list a:hover {
            background: var(--color-accent-pale);
            color: var(--color-accent);
        }
        .sidebar-cat-list a .cat-count {
            font-size: 0.78rem;
            color: var(--color-text-muted);
            background: var(--color-surface);
            padding: 2px 9px;
            border-radius: 10px;
        }
        .sidebar-post-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .sidebar-post-list li a {
            display: block;
            font-size: 0.88rem;
            color: var(--color-text);
            line-height: 1.45;
            padding: 8px 0;
            border-bottom: 1px dashed var(--color-border-light);
            transition: color var(--transition-fast);
        }
        .sidebar-post-list li:last-child a { border-bottom: none; }
        .sidebar-post-list li a:hover { color: var(--color-accent); }
        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-tag {
            display: inline-block;
            padding: 5px 13px;
            background: var(--color-tag-bg);
            color: var(--color-tag-text);
            border-radius: 15px;
            font-size: 0.8rem;
            font-weight: 500;
            transition: all var(--transition-fast);
        }
        .sidebar-tag:hover {
            background: var(--color-accent);
            color: #fff;
        }
        @media (max-width: 900px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .article-sidebar {
                position: static;
                top: auto;
                display: grid;
                grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
                gap: 16px;
            }
            .sidebar-card { margin-bottom: 0; }
        }

        /* Related Posts */
        .related-section {
            padding: 50px 0 40px;
            background: var(--color-surface);
            border-top: 1px solid var(--color-border-light);
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--color-accent);
            margin-bottom: 8px;
        }
        .section-heading {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 28px;
            letter-spacing: -0.01em;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }
        .related-card {
            background: var(--color-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-base);
            border: 1px solid var(--color-border-light);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--color-accent);
        }
        .related-card-img {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #e8ecf1;
        }
        .related-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-base);
        }
        .related-card:hover .related-card-img img { transform: scale(1.04); }
        .related-card-body { padding: 16px 18px; flex: 1; display: flex; flex-direction: column; }
        .related-card-tag {
            font-size: 0.75rem;
            color: var(--color-accent);
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 6px;
        }
        .related-card h4 {
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--color-primary);
            line-height: 1.4;
            margin-bottom: 8px;
            flex: 1;
        }
        .related-card h4 a { color: inherit; }
        .related-card h4 a:hover { color: var(--color-accent); }
        .related-card-date {
            font-size: 0.78rem;
            color: var(--color-text-muted);
        }
        @media (max-width: 768px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .section-heading { font-size: 1.4rem; }
        }
        @media (max-width: 520px) {
            .related-grid { grid-template-columns: 1fr; }
        }

        /* CTA Section */
        .cta-section {
            padding: 50px 0;
            background: linear-gradient(135deg, var(--color-primary-deep) 0%, var(--color-primary) 60%, #26547c 100%);
            text-align: center;
            color: #fff;
        }
        .cta-section h3 {
            font-size: 1.7rem;
            font-weight: 700;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }
        .cta-section p {
            font-size: 1rem;
            opacity: 0.85;
            margin-bottom: 24px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: var(--color-accent);
            color: #fff;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-base);
            box-shadow: 0 6px 20px rgba(46,139,127,0.35);
        }
        .btn-cta-large:hover {
            background: var(--color-accent-light);
            color: #fff;
            box-shadow: 0 8px 28px rgba(46,139,127,0.5);
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .cta-section h3 { font-size: 1.35rem; }
        }

        /* Footer */
        .site-footer {
            background: #0f1a2a;
            color: #c0c8d4;
            padding: 44px 0 20px;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 30px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .footer-brand-name {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: -0.02em;
        }
        .footer-brand-desc {
            font-size: 0.85rem;
            line-height: 1.6;
            color: #8e98a6;
        }
        .footer-col-title {
            font-weight: 700;
            color: #e0e5ec;
            margin-bottom: 10px;
            font-size: 0.9rem;
            letter-spacing: 0.03em;
        }
        .footer-col a {
            display: block;
            color: #8e98a6;
            font-size: 0.85rem;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover { color: #fff; }
        .footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 16px 20px 0;
            border-top: 1px solid rgba(255,255,255,0.08);
            margin-top: 30px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 8px;
            font-size: 0.8rem;
            color: #6e7886;
        }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 16px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* Utility */
        .text-muted { color: var(--color-text-muted); }
        .mt-20 { margin-top: 20px; }

/* roulang page: category3 */
:root {
            --color-primary: #1a6b6b;
            --color-primary-light: #2a8a8a;
            --color-primary-dark: #0f4f4f;
            --color-accent: #3b9e9e;
            --color-accent-soft: #e6f4f4;
            --color-bg: #f7f9fa;
            --color-surface: #ffffff;
            --color-text: #1e2d2d;
            --color-text-secondary: #5a6e6e;
            --color-text-weak: #889999;
            --color-border: #e0e8e8;
            --color-border-light: #eef3f3;
            --color-success: #2d8f6f;
            --color-warning: #c4943a;
            --color-danger: #c45a4a;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.04);
            --shadow-lg: 0 8px 28px rgba(0,0,0,0.09), 0 3px 8px rgba(0,0,0,0.05);
            --shadow-xl: 0 16px 40px rgba(0,0,0,0.11), 0 6px 14px rgba(0,0,0,0.06);
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --max-width: 1260px;
            --header-height: 64px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

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

        ul, ol {
            list-style: none;
        }

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

        /* ---------- Container ---------- */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ---------- Header / Nav ---------- */
        .site-header {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--header-height);
            box-shadow: var(--shadow-sm);
        }

        .site-header .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 20px;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 9px;
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--color-primary-dark);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .header-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .nav-channels {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
        }

        .nav-channels a {
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.93rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .nav-channels a:hover {
            color: var(--color-primary);
            background: var(--color-accent-soft);
        }

        .nav-channels a.active {
            color: #fff;
            background: var(--color-primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(26,107,107,0.3);
        }

        .nav-channels a.active:hover {
            background: var(--color-primary-light);
            color: #fff;
        }

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

        .header-search {
            position: relative;
            display: flex;
            align-items: center;
        }

        .header-search input {
            padding: 8px 14px 8px 36px;
            border: 1px solid var(--color-border);
            border-radius: 20px;
            font-size: 0.88rem;
            width: 200px;
            background: var(--color-bg);
            transition: all var(--transition-fast);
            color: var(--color-text);
        }

        .header-search input:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(26,107,107,0.08);
            width: 240px;
        }

        .header-search .search-icon {
            position: absolute;
            left: 12px;
            color: var(--color-text-weak);
            font-size: 0.85rem;
            pointer-events: none;
        }

        .btn-login {
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--color-primary);
            border: 1.5px solid var(--color-primary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-login:hover {
            background: var(--color-accent-soft);
            border-color: var(--color-primary-light);
        }

        .btn-cta-header {
            padding: 9px 20px;
            border-radius: 20px;
            font-size: 0.88rem;
            font-weight: 600;
            color: #fff;
            background: var(--color-accent);
            transition: all var(--transition-fast);
            white-space: nowrap;
            box-shadow: 0 2px 8px rgba(59,158,158,0.35);
        }

        .btn-cta-header:hover {
            background: var(--color-primary-light);
            box-shadow: 0 4px 14px rgba(26,107,107,0.4);
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--color-text);
            padding: 6px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: var(--color-accent-soft);
        }

        @media (max-width: 1024px) {
            .header-search input {
                width: 150px;
            }
            .header-search input:focus {
                width: 180px;
            }
            .nav-channels a {
                padding: 7px 12px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                height: auto;
                min-height: 56px;
            }
            .header-inner {
                flex-wrap: wrap;
                padding: 8px 0;
                gap: 8px;
            }
            .mobile-menu-toggle {
                display: block;
                order: 3;
            }
            .nav-channels {
                display: none;
                order: 10;
                width: 100%;
                flex-direction: column;
                gap: 4px;
                padding-top: 8px;
                border-top: 1px solid var(--color-border-light);
            }
            .nav-channels.open {
                display: flex;
            }
            .nav-channels a {
                width: 100%;
                text-align: center;
                padding: 10px 16px;
                border-radius: var(--radius-sm);
            }
            .header-search {
                order: 2;
                flex: 1;
                min-width: 120px;
            }
            .header-search input {
                width: 100%;
            }
            .header-search input:focus {
                width: 100%;
            }
            .btn-login {
                order: 1;
            }
            .btn-cta-header {
                order: 1;
            }
            .header-logo {
                order: 0;
                font-size: 1.1rem;
            }
        }

        @media (max-width: 520px) {
            .header-actions {
                gap: 6px;
            }
            .btn-login,
            .btn-cta-header {
                padding: 7px 12px;
                font-size: 0.78rem;
            }
            .header-logo {
                font-size: 1rem;
            }
            .header-logo .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 0.8rem;
            }
        }

        /* ---------- Page Banner ---------- */
        .page-banner {
            background: linear-gradient(170deg, #1a3c3c 0%, #1a5a5a 40%, #1a6b6b 100%);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center 40%;
            background-blend-mode: overlay;
            padding: 72px 0 64px;
            position: relative;
            color: #fff;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26,60,60,0.55) 0%, rgba(26,90,90,0.7) 100%);
            pointer-events: none;
            z-index: 1;
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
        }

        .banner-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: rgba(255,255,255,0.75);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .banner-breadcrumb a {
            color: rgba(255,255,255,0.85);
            transition: color var(--transition-fast);
        }

        .banner-breadcrumb a:hover {
            color: #fff;
        }

        .banner-breadcrumb .sep {
            color: rgba(255,255,255,0.5);
        }

        .page-banner h1 {
            font-size: 2.6rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            line-height: 1.25;
        }

        .page-banner .banner-subtitle {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.85);
            max-width: 640px;
            line-height: 1.6;
        }

        .banner-stats-row {
            display: flex;
            gap: 32px;
            margin-top: 28px;
            flex-wrap: wrap;
        }

        .banner-stat-item {
            display: flex;
            align-items: baseline;
            gap: 6px;
        }

        .banner-stat-value {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -0.01em;
        }

        .banner-stat-label {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 48px 0 40px;
            }
            .page-banner h1 {
                font-size: 1.9rem;
            }
            .page-banner .banner-subtitle {
                font-size: 1rem;
            }
            .banner-stat-value {
                font-size: 1.5rem;
            }
            .banner-stats-row {
                gap: 20px;
            }
        }

        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.55rem;
            }
            .banner-stats-row {
                flex-direction: column;
                gap: 10px;
            }
            .banner-stat-value {
                font-size: 1.35rem;
            }
        }

        /* ---------- Section Common ---------- */
        .section {
            padding: 64px 0;
        }

        .section-sm {
            padding: 40px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .section-header .section-lead {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.6;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--color-primary);
            background: var(--color-accent-soft);
            padding: 5px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        @media (max-width: 768px) {
            .section {
                padding: 44px 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .section-header {
                margin-bottom: 30px;
            }
        }

        /* ---------- KPI Dashboard ---------- */
        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .kpi-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .kpi-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--color-primary);
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .kpi-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: var(--color-primary-light);
        }

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

        .kpi-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-accent-soft);
            color: var(--color-primary);
            font-size: 1.25rem;
            margin-bottom: 14px;
        }

        .kpi-value {
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.02em;
            line-height: 1;
            margin-bottom: 6px;
        }

        .kpi-value .unit {
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            margin-left: 4px;
        }

        .kpi-label {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            font-weight: 500;
            margin-bottom: 4px;
        }

        .kpi-trend {
            font-size: 0.82rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 3px 10px;
            border-radius: 12px;
        }

        .kpi-trend.up {
            color: var(--color-success);
            background: #eaf7f2;
        }

        .kpi-trend.down {
            color: var(--color-danger);
            background: #fdf0ed;
        }

        .kpi-trend.stable {
            color: var(--color-warning);
            background: #fdf6ea;
        }

        @media (max-width: 1024px) {
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 520px) {
            .kpi-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .kpi-card {
                padding: 20px 14px;
            }
            .kpi-value {
                font-size: 1.7rem;
            }
            .kpi-icon {
                width: 38px;
                height: 38px;
                font-size: 1rem;
                margin-bottom: 8px;
            }
        }

        /* ---------- Insight Cards Grid ---------- */
        .insight-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .insight-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

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

        .insight-card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            background: #e8eeef;
            border-bottom: 1px solid var(--color-border-light);
        }

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

        .insight-card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 12px;
            background: var(--color-accent-soft);
            color: var(--color-primary);
            margin-bottom: 10px;
            align-self: flex-start;
            letter-spacing: 0.02em;
        }

        .insight-card-body h3 {
            font-size: 1.12rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.4;
            letter-spacing: -0.005em;
        }

        .insight-card-body p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 14px;
        }

        .insight-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--color-text-weak);
            padding-top: 12px;
            border-top: 1px solid var(--color-border-light);
        }

        .insight-card-meta span {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        @media (max-width: 1024px) {
            .insight-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
        }

        @media (max-width: 600px) {
            .insight-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .insight-card-body {
                padding: 16px 16px 18px;
            }
            .insight-card-body h3 {
                font-size: 1.05rem;
            }
        }

        /* ---------- Trend Table Block ---------- */
        .trend-table-wrap {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .trend-table-wrap table {
            width: 100%;
            border-collapse: collapse;
            margin: 0;
        }

        .trend-table-wrap thead th {
            background: #f5f8f8;
            padding: 14px 18px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-text-secondary);
            text-align: left;
            border-bottom: 2px solid var(--color-border);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .trend-table-wrap tbody td {
            padding: 14px 18px;
            font-size: 0.92rem;
            color: var(--color-text);
            border-bottom: 1px solid var(--color-border-light);
            vertical-align: middle;
        }

        .trend-table-wrap tbody tr:hover {
            background: #fafcfc;
        }

        .trend-table-wrap tbody tr:last-child td {
            border-bottom: none;
        }

        .trend-badge {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 12px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.01em;
        }

        .trend-badge.rising {
            background: #eaf7f2;
            color: var(--color-success);
        }

        .trend-badge.falling {
            background: #fdf0ed;
            color: var(--color-danger);
        }

        .trend-badge.flat {
            background: #f5f5f0;
            color: #8a8a6f;
        }

        .trend-value-highlight {
            font-weight: 700;
            color: var(--color-primary-dark);
        }

        @media (max-width: 768px) {
            .trend-table-wrap {
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
            }
            .trend-table-wrap table {
                min-width: 700px;
            }
            .trend-table-wrap thead th,
            .trend-table-wrap tbody td {
                padding: 10px 12px;
                font-size: 0.82rem;
            }
        }

        /* ---------- Comparison Cards ---------- */
        .compare-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .compare-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            transition: all var(--transition-base);
        }

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

        .compare-card-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 18px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--color-border-light);
        }

        .compare-card-img {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            object-fit: cover;
            flex-shrink: 0;
            background: #e8eeef;
        }

        .compare-card-header h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 0;
            line-height: 1.35;
        }

        .compare-card-header .sub {
            font-size: 0.82rem;
            color: var(--color-text-weak);
        }

        .compare-bars {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .compare-bar-item {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .compare-bar-label {
            width: 80px;
            font-size: 0.82rem;
            color: var(--color-text-secondary);
            flex-shrink: 0;
            text-align: right;
            font-weight: 500;
        }

        .compare-bar-track {
            flex: 1;
            height: 10px;
            background: #eef3f3;
            border-radius: 5px;
            overflow: hidden;
        }

        .compare-bar-fill {
            height: 100%;
            border-radius: 5px;
            background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
            transition: width 0.6s ease;
        }

        .compare-bar-fill.alt {
            background: linear-gradient(90deg, #4a9ea0 0%, #6dc5c5 100%);
        }

        .compare-bar-value {
            width: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--color-text);
            flex-shrink: 0;
        }

        @media (max-width: 768px) {
            .compare-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .compare-card {
                padding: 20px 16px;
            }
            .compare-bar-label {
                width: 60px;
                font-size: 0.78rem;
            }
            .compare-bar-value {
                width: 40px;
                font-size: 0.78rem;
            }
        }

        /* ---------- FAQ ---------- */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--color-primary-light);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            background: none;
            border: none;
            transition: color var(--transition-fast);
        }

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

        .faq-question .faq-icon {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--color-primary);
        }

        .faq-answer {
            padding: 0 22px;
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        .faq-answer p {
            font-size: 0.93rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        @media (max-width: 520px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 0.93rem;
            }
            .faq-answer {
                padding: 0 16px;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 14px;
            }
            .faq-answer p {
                font-size: 0.85rem;
            }
        }

        /* ---------- CTA Section ---------- */
        .cta-section {
            background: linear-gradient(160deg, #1a5050 0%, #1a6b6b 60%, #1e7a7a 100%);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 64px 0;
            text-align: center;
            color: #fff;
            position: relative;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(18, 55, 55, 0.45);
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .cta-section .cta-desc {
            font-size: 1.08rem;
            color: rgba(255,255,255,0.85);
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }

        .btn-cta-large {
            display: inline-block;
            padding: 14px 36px;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-primary-dark);
            background: #fff;
            border-radius: 30px;
            transition: all var(--transition-base);
            box-shadow: 0 6px 20px rgba(0,0,0,0.2);
            letter-spacing: 0.01em;
        }

        .btn-cta-large:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(0,0,0,0.28);
            background: #f0fafa;
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 44px 0;
            }
            .cta-section h2 {
                font-size: 1.55rem;
            }
            .cta-section .cta-desc {
                font-size: 0.95rem;
            }
            .btn-cta-large {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: #1a2a2a;
            color: #c5d0d0;
            padding: 48px 0 0;
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }

        .footer-brand-name {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .footer-brand-desc {
            color: #a0b0b0;
            font-size: 0.88rem;
            max-width: 300px;
            line-height: 1.7;
        }

        .footer-col-title {
            font-size: 0.85rem;
            font-weight: 700;
            color: #e8efef;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            color: #a0b0b0;
            padding: 4px 0;
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: #4dc0c0;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 0;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.82rem;
            color: #7a8a8a;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-brand-desc {
                max-width: 100%;
            }
        }

        /* ---------- Utility ---------- */
        .text-center {
            text-align: center;
        }

        .mt-0 {
            margin-top: 0;
        }

        .mb-0 {
            margin-bottom: 0;
        }

        .visually-hidden {
            position: absolute;
            width: 1px;
            height: 1px;
            margin: -1px;
            padding: 0;
            overflow: hidden;
            clip: rect(0,0,0,0);
            border: 0;
        }

        .bg-soft {
            background: #f4f7f7;
        }

        @media (max-width: 768px) {
            body {
                font-size: 15px;
            }
        }

/* roulang page: category2 */
/* ============ 设计变量 ============ */
        :root {
            --primary: #2d6a6a;
            --primary-light: #3d8a8a;
            --primary-dark: #1a4a4a;
            --primary-surface: #e8f4f4;
            --primary-glow: rgba(45,106,106,0.12);
            --secondary: #4a5568;
            --secondary-light: #6b7d95;
            --accent: #5b8c5a;
            --accent-light: #eaf5ea;
            --warning: #c98a3a;
            --warning-light: #fdf6ed;
            --danger: #b54545;
            --bg: #f5f7f8;
            --bg-alt: #edf1f3;
            --surface: #ffffff;
            --surface-hover: #fafcfc;
            --text: #1a202c;
            --text-secondary: #3d4a5c;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border: #dde4e9;
            --border-light: #eaf0f4;
            --border-subtle: #f0f4f7;
            --radius-xs: 3px;
            --radius-sm: 5px;
            --radius: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.04);
            --shadow: 0 2px 8px rgba(0,0,0,0.06), 0 1px 3px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.07), 0 2px 6px rgba(0,0,0,0.04);
            --shadow-lg: 0 8px 28px rgba(0,0,0,0.08), 0 3px 10px rgba(0,0,0,0.05);
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing: 1.5rem;
            --spacing-lg: 2rem;
            --spacing-xl: 3rem;
            --spacing-2xl: 4rem;
            --spacing-3xl: 5rem;
            --font-xs: 0.75rem;
            --font-sm: 0.875rem;
            --font-base: 1rem;
            --font-md: 1.125rem;
            --font-lg: 1.25rem;
            --font-xl: 1.5rem;
            --font-2xl: 1.875rem;
            --font-3xl: 2.25rem;
            --font-kpi: 2.75rem;
            --font-weight-normal: 400;
            --font-weight-medium: 500;
            --font-weight-semibold: 600;
            --font-weight-bold: 700;
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s ease;
            --max-width: 1200px;
        }

        /* ============ 基础 Reset ============ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            font-size: var(--font-base);
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            margin: 0;
            padding: 0;
            min-height: 100vh;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        h1, h2, h3, h4, h5, h6 {
            margin: 0;
            line-height: 1.3;
            color: var(--text);
        }

        /* ============ 容器覆盖 Foundation ============ */
        .grid-container {
            max-width: var(--max-width);
            padding-left: var(--spacing);
            padding-right: var(--spacing);
        }

        /* ============ Header / 导航 ============ */
        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-xs);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            gap: var(--spacing);
            padding: 0 var(--spacing);
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .header-brand {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-shrink: 0;
            text-decoration: none;
        }
        .header-brand .brand-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .header-brand .brand-name {
            font-size: var(--font-lg);
            font-weight: var(--font-weight-bold);
            color: var(--text);
            letter-spacing: -0.01em;
        }
        .header-brand:hover .brand-name {
            color: var(--primary);
        }
        .nav-channels {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex-wrap: nowrap;
        }
        .nav-channels a {
            display: inline-flex;
            align-items: center;
            padding: 0.45rem 0.9rem;
            font-size: var(--font-sm);
            font-weight: var(--font-weight-medium);
            color: var(--text-secondary);
            border-radius: 20px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
            text-decoration: none;
        }
        .nav-channels a:hover {
            background: var(--primary-surface);
            color: var(--primary);
        }
        .nav-channels a.active {
            background: var(--primary);
            color: #fff;
            font-weight: var(--font-weight-semibold);
        }
        .nav-channels a.active:hover {
            background: var(--primary-dark);
            color: #fff;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }
        .header-search {
            position: relative;
        }
        .header-search input {
            width: 180px;
            height: 36px;
            padding: 0 2.2rem 0 0.85rem;
            border: 1px solid var(--border);
            border-radius: 20px;
            font-size: var(--font-sm);
            background: var(--bg);
            color: var(--text);
            transition: all var(--transition-fast);
            outline: none;
        }
        .header-search input:focus {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px var(--primary-glow);
            width: 210px;
            background: var(--surface);
        }
        .header-search .search-icon {
            position: absolute;
            right: 0.75rem;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 0.85rem;
            pointer-events: none;
        }
        .btn-header {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.45rem 1rem;
            font-size: var(--font-sm);
            font-weight: var(--font-weight-medium);
            border-radius: 20px;
            border: 1px solid var(--border);
            background: var(--surface);
            color: var(--text-secondary);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
        }
        .btn-header:hover {
            background: var(--bg);
            border-color: var(--primary-light);
            color: var(--primary);
        }
        .btn-header-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: var(--font-weight-semibold);
        }
        .btn-header-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text-secondary);
            cursor: pointer;
            padding: 0.3rem;
            line-height: 1;
        }
        @media (max-width: 920px) {
            .header-inner {
                height: 54px;
                gap: 0.5rem;
            }
            .nav-channels {
                display: none;
                position: absolute;
                top: 54px;
                left: 0;
                right: 0;
                background: var(--surface);
                flex-direction: column;
                padding: var(--spacing-sm);
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                gap: 0.15rem;
                z-index: 99;
            }
            .nav-channels.open {
                display: flex;
            }
            .nav-channels a {
                border-radius: var(--radius-sm);
                padding: 0.6rem 1rem;
            }
            .header-search input {
                width: 130px;
            }
            .header-search input:focus {
                width: 160px;
            }
            .mobile-toggle {
                display: block;
            }
            .btn-header span.btn-label {
                display: none;
            }
            .btn-header {
                padding: 0.45rem 0.6rem;
                font-size: 0.8rem;
            }
        }
        @media (max-width: 520px) {
            .header-search {
                display: none;
            }
            .header-brand .brand-name {
                font-size: var(--font-base);
            }
            .header-brand .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
        }

        /* ============ 内页 Banner ============ */
        .page-banner {
            background: linear-gradient(160deg, #1e3a3a 0%, #2d5a5a 30%, #1a3a3a 100%);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
            padding: var(--spacing-2xl) 0 var(--spacing-xl);
            color: #fff;
            overflow: hidden;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15,35,35,0.55);
            z-index: 1;
        }
        .page-banner .banner-content {
            position: relative;
            z-index: 2;
        }
        .banner-breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: var(--font-sm);
            color: rgba(255,255,255,0.75);
            margin-bottom: var(--spacing-sm);
        }
        .banner-breadcrumb a {
            color: rgba(255,255,255,0.85);
            text-decoration: none;
        }
        .banner-breadcrumb a:hover {
            color: #fff;
        }
        .banner-breadcrumb .sep {
            opacity: 0.5;
        }
        .page-banner .banner-title {
            font-size: var(--font-3xl);
            font-weight: var(--font-weight-bold);
            color: #fff;
            margin-bottom: var(--spacing-xs);
            letter-spacing: -0.02em;
        }
        .page-banner .banner-desc {
            font-size: var(--font-md);
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            line-height: 1.6;
        }
        .banner-stats-row {
            display: flex;
            gap: var(--spacing-lg);
            margin-top: var(--spacing-lg);
            flex-wrap: wrap;
        }
        .banner-stat-item {
            display: flex;
            flex-direction: column;
            gap: 0.2rem;
        }
        .banner-stat-item .stat-value {
            font-size: var(--font-2xl);
            font-weight: var(--font-weight-bold);
            color: #fff;
            line-height: 1;
        }
        .banner-stat-item .stat-label {
            font-size: var(--font-xs);
            color: rgba(255,255,255,0.65);
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }
        @media (max-width: 768px) {
            .page-banner {
                padding: var(--spacing-xl) 0 var(--spacing-lg);
            }
            .page-banner .banner-title {
                font-size: var(--font-2xl);
            }
            .banner-stats-row {
                gap: var(--spacing);
            }
            .banner-stat-item .stat-value {
                font-size: var(--font-xl);
            }
        }

        /* ============ 板块通用 ============ */
        .section-block {
            padding: var(--spacing-2xl) 0;
        }
        .section-block.alt-bg {
            background: var(--bg-alt);
        }
        .section-header {
            margin-bottom: var(--spacing-xl);
        }
        .section-header .section-eyebrow {
            display: inline-block;
            font-size: var(--font-xs);
            font-weight: var(--font-weight-semibold);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--primary);
            background: var(--primary-surface);
            padding: 0.3rem 0.75rem;
            border-radius: 20px;
            margin-bottom: var(--spacing-xs);
        }
        .section-header .section-title {
            font-size: var(--font-2xl);
            font-weight: var(--font-weight-bold);
            color: var(--text);
            margin-bottom: var(--spacing-xs);
            letter-spacing: -0.01em;
        }
        .section-header .section-subtitle {
            font-size: var(--font-base);
            color: var(--text-muted);
            max-width: 550px;
        }

        /* ============ KPI 仪表盘卡片 ============ */
        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing);
        }
        .kpi-card {
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            position: relative;
            transition: all var(--transition);
            box-shadow: var(--shadow-xs);
        }
        .kpi-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--border);
            transform: translateY(-2px);
        }
        .kpi-card .kpi-icon-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: var(--spacing-sm);
        }
        .kpi-card .kpi-icon {
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
        }
        .kpi-icon.blue {
            background: #e6f0f5;
            color: #3a7d8a;
        }
        .kpi-icon.green {
            background: var(--accent-light);
            color: var(--accent);
        }
        .kpi-icon.amber {
            background: var(--warning-light);
            color: var(--warning);
        }
        .kpi-icon.teal {
            background: var(--primary-surface);
            color: var(--primary);
        }
        .kpi-card .kpi-trend {
            font-size: var(--font-xs);
            font-weight: var(--font-weight-semibold);
            padding: 0.2rem 0.55rem;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            gap: 0.2rem;
        }
        .kpi-trend.up {
            background: #e6f5ea;
            color: #2d7a3a;
        }
        .kpi-trend.down {
            background: #fde8e8;
            color: #a33;
        }
        .kpi-trend.stable {
            background: #f0f4f7;
            color: #556;
        }
        .kpi-card .kpi-value {
            font-size: var(--font-kpi);
            font-weight: var(--font-weight-bold);
            color: var(--text);
            line-height: 1;
            margin-bottom: 0.3rem;
            letter-spacing: -0.02em;
        }
        .kpi-card .kpi-unit {
            font-size: var(--font-base);
            font-weight: var(--font-weight-normal);
            color: var(--text-muted);
        }
        .kpi-card .kpi-label {
            font-size: var(--font-sm);
            color: var(--text-muted);
            margin-bottom: 0.5rem;
        }
        .kpi-card .kpi-sub {
            font-size: var(--font-xs);
            color: var(--text-light);
            border-top: 1px solid var(--border-subtle);
            padding-top: 0.6rem;
            margin-top: 0.4rem;
        }
        @media (max-width: 1024px) {
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .kpi-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-sm);
            }
            .kpi-card .kpi-value {
                font-size: var(--font-2xl);
            }
        }

        /* ============ 洞察报告卡片 ============ */
        .insight-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }
        .insight-card {
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-xs);
            display: flex;
            flex-direction: column;
        }
        .insight-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--border);
            transform: translateY(-3px);
        }
        .insight-card .card-img-wrap {
            position: relative;
            height: 180px;
            overflow: hidden;
            background: var(--bg-alt);
        }
        .insight-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .insight-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }
        .insight-card .card-tag {
            position: absolute;
            top: 0.75rem;
            left: 0.75rem;
            font-size: var(--font-xs);
            font-weight: var(--font-weight-semibold);
            background: var(--primary);
            color: #fff;
            padding: 0.25rem 0.65rem;
            border-radius: 12px;
            z-index: 2;
        }
        .insight-card .card-body {
            padding: var(--spacing);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .insight-card .card-date {
            font-size: var(--font-xs);
            color: var(--text-light);
            margin-bottom: 0.4rem;
        }
        .insight-card .card-title {
            font-size: var(--font-md);
            font-weight: var(--font-weight-semibold);
            color: var(--text);
            margin-bottom: 0.5rem;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .insight-card .card-excerpt {
            font-size: var(--font-sm);
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .insight-card .card-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            margin-top: var(--spacing-sm);
            padding-top: var(--spacing-sm);
            border-top: 1px solid var(--border-subtle);
            font-size: var(--font-xs);
            color: var(--text-light);
        }
        .insight-card .card-meta span {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        @media (max-width: 1024px) {
            .insight-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 600px) {
            .insight-card-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing);
            }
        }

        /* ============ 趋势数据表格 ============ */
        .data-table-wrap {
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-xs);
        }
        .data-table-wrap .table-header-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing) var(--spacing-lg);
            border-bottom: 1px solid var(--border-light);
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }
        .data-table-wrap .table-title-sm {
            font-size: var(--font-md);
            font-weight: var(--font-weight-semibold);
            color: var(--text);
        }
        .data-table-wrap .table-filter {
            display: flex;
            gap: 0.3rem;
        }
        .data-table-wrap .table-filter .pill {
            padding: 0.3rem 0.8rem;
            font-size: var(--font-xs);
            font-weight: var(--font-weight-medium);
            border-radius: 16px;
            border: 1px solid var(--border);
            background: var(--surface);
            color: var(--text-muted);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .data-table-wrap .table-filter .pill.active,
        .data-table-wrap .table-filter .pill:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .trend-table {
            width: 100%;
            border-collapse: collapse;
            font-size: var(--font-sm);
        }
        .trend-table thead th {
            background: var(--bg-alt);
            padding: 0.75rem 1rem;
            text-align: left;
            font-weight: var(--font-weight-semibold);
            color: var(--text-secondary);
            font-size: var(--font-xs);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            border-bottom: 2px solid var(--border);
        }
        .trend-table tbody td {
            padding: 0.7rem 1rem;
            border-bottom: 1px solid var(--border-subtle);
            color: var(--text);
            vertical-align: middle;
        }
        .trend-table tbody tr {
            transition: background var(--transition-fast);
        }
        .trend-table tbody tr:hover {
            background: var(--surface-hover);
        }
        .trend-table .badge-indicator {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            margin-right: 0.4rem;
        }
        .badge-indicator.high {
            background: #3a8;
        }
        .badge-indicator.medium {
            background: #c98a3a;
        }
        .badge-indicator.low {
            background: #b54545;
        }
        @media (max-width: 768px) {
            .trend-table {
                font-size: var(--font-xs);
            }
            .trend-table thead th,
            .trend-table tbody td {
                padding: 0.5rem 0.6rem;
            }
        }
        @media (max-width: 520px) {
            .data-table-wrap {
                overflow-x: auto;
            }
            .trend-table {
                min-width: 550px;
            }
        }

        /* ============ 深度分析区块 ============ */
        .analysis-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }
        .analysis-row.reverse {
            direction: rtl;
        }
        .analysis-row.reverse .analysis-text {
            direction: ltr;
        }
        .analysis-row .analysis-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
        }
        .analysis-row .analysis-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        .analysis-text .analysis-eyebrow {
            font-size: var(--font-xs);
            font-weight: var(--font-weight-semibold);
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 0.4rem;
        }
        .analysis-text .analysis-title {
            font-size: var(--font-xl);
            font-weight: var(--font-weight-bold);
            color: var(--text);
            margin-bottom: var(--spacing-sm);
            line-height: 1.3;
        }
        .analysis-text .analysis-desc {
            font-size: var(--font-base);
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: var(--spacing);
        }
        .analysis-text .analysis-bullets {
            list-style: none;
            padding: 0;
            margin: 0 0 var(--spacing) 0;
        }
        .analysis-text .analysis-bullets li {
            padding: 0.4rem 0;
            font-size: var(--font-sm);
            color: var(--text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 0.5rem;
            border-bottom: 1px solid var(--border-subtle);
        }
        .analysis-text .analysis-bullets li:last-child {
            border-bottom: none;
        }
        .analysis-text .analysis-bullets li i {
            color: var(--primary);
            margin-top: 0.2rem;
            flex-shrink: 0;
        }
        @media (max-width: 768px) {
            .analysis-row {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .analysis-row.reverse {
                direction: ltr;
            }
            .analysis-text .analysis-title {
                font-size: var(--font-lg);
            }
        }

        /* ============ FAQ 板块 ============ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            margin-bottom: var(--spacing-sm);
            background: var(--surface);
            transition: all var(--transition-fast);
            overflow: hidden;
        }
        .faq-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing) var(--spacing-lg);
            cursor: pointer;
            font-weight: var(--font-weight-semibold);
            font-size: var(--font-base);
            color: var(--text);
            user-select: none;
            gap: var(--spacing-sm);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-surface);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            color: var(--primary);
            transition: transform var(--transition-fast);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition), padding var(--transition);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 var(--spacing-lg) var(--spacing-lg);
            font-size: var(--font-sm);
            color: var(--text-muted);
            line-height: 1.7;
        }
        @media (max-width: 520px) {
            .faq-question {
                padding: var(--spacing-sm);
                font-size: var(--font-sm);
            }
            .faq-answer-inner {
                padding: 0 var(--spacing-sm) var(--spacing-sm);
            }
        }

        /* ============ CTA 板块 ============ */
        .cta-block {
            background: linear-gradient(150deg, #1e3a3a 0%, #2d5a5a 50%, #1a3a3a 100%);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            border-radius: var(--radius-xl);
            padding: var(--spacing-2xl) var(--spacing-xl);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::after {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15,35,35,0.5);
            z-index: 1;
        }
        .cta-block .cta-content {
            position: relative;
            z-index: 2;
        }
        .cta-block .cta-title {
            font-size: var(--font-2xl);
            font-weight: var(--font-weight-bold);
            color: #fff;
            margin-bottom: var(--spacing-sm);
        }
        .cta-block .cta-desc {
            font-size: var(--font-md);
            color: rgba(255,255,255,0.8);
            max-width: 500px;
            margin: 0 auto var(--spacing-lg);
            line-height: 1.6;
        }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 2rem;
            font-size: var(--font-base);
            font-weight: var(--font-weight-semibold);
            border-radius: 28px;
            background: #fff;
            color: var(--primary-dark);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            box-shadow: var(--shadow-md);
        }
        .btn-cta:hover {
            background: #f0f4f4;
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
            color: var(--primary-dark);
        }
        @media (max-width: 520px) {
            .cta-block {
                padding: var(--spacing-xl) var(--spacing);
                border-radius: var(--radius-lg);
            }
            .cta-block .cta-title {
                font-size: var(--font-xl);
            }
        }

        /* ============ Footer ============ */
        .site-footer {
            background: #1a2630;
            color: #c8d6e0;
            padding: var(--spacing-2xl) 0 var(--spacing);
            margin-top: var(--spacing-2xl);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing);
        }
        .footer-brand-name {
            font-size: var(--font-lg);
            font-weight: var(--font-weight-bold);
            color: #fff;
            margin-bottom: 0.5rem;
        }
        .footer-brand-desc {
            font-size: var(--font-sm);
            color: #94a8b8;
            line-height: 1.6;
            max-width: 280px;
        }
        .footer-col-title {
            font-size: var(--font-sm);
            font-weight: var(--font-weight-semibold);
            color: #fff;
            margin-bottom: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }
        .footer-col a {
            display: block;
            font-size: var(--font-sm);
            color: #94a8b8;
            padding: 0.3rem 0;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: #d0dde8;
        }
        .footer-bottom {
            max-width: var(--max-width);
            margin: var(--spacing-xl) auto 0;
            padding: var(--spacing) var(--spacing) 0;
            border-top: 1px solid rgba(255,255,255,0.08);
            display: flex;
            justify-content: space-between;
            font-size: var(--font-xs);
            color: #7a8e9e;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-lg);
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing);
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ============ 通用按钮与标签 ============ */
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.55rem 1.3rem;
            font-size: var(--font-sm);
            font-weight: var(--font-weight-medium);
            border-radius: 22px;
            border: 1px solid var(--border);
            background: var(--surface);
            color: var(--text-secondary);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-surface);
        }
        .tag-sm {
            display: inline-block;
            font-size: var(--font-xs);
            font-weight: var(--font-weight-medium);
            padding: 0.2rem 0.6rem;
            border-radius: 10px;
            background: var(--primary-surface);
            color: var(--primary);
        }

        /* ============ 过渡动画 ============ */
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(16px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .animate-in {
            animation: fadeInUp 0.5s ease forwards;
        }

        /* ============ Foundation 覆盖 ============ */
        .grid-container {
            padding-left: var(--spacing);
            padding-right: var(--spacing);
        }
        @media (min-width: 1200px) {
            .grid-container {
                padding-left: 0;
                padding-right: 0;
            }
        }