/* roulang page: index */
:root {
            --color-primary: #1a365d;
            --color-primary-light: #1e40af;
            --color-primary-lighter: #2563eb;
            --color-accent: #f59e0b;
            --color-accent-light: #fbbf24;
            --color-live: #dc2626;
            --color-live-pulse: #ef4444;
            --color-upcoming: #2563eb;
            --color-bg: #f8fafc;
            --color-bg-alt: #f1f5f9;
            --color-surface: #ffffff;
            --color-text: #1e293b;
            --color-text-secondary: #64748b;
            --color-text-muted: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-2xl: 24px;
            --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05), 0 2px 4px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.06), 0 4px 6px rgba(0, 0, 0, 0.04);
            --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.08), 0 8px 10px rgba(0, 0, 0, 0.04);
            --shadow-card: 0 1px 4px rgba(0, 0, 0, 0.04), 0 4px 12px rgba(0, 0, 0, 0.05);
            --shadow-card-hover: 0 4px 16px rgba(0, 0, 0, 0.08), 0 8px 24px rgba(0, 0, 0, 0.06);
            --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 220ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.65;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-tap-highlight-color: transparent;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary-lighter);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            outline: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-primary-lighter);
            outline-offset: 3px;
            border-radius: 4px;
        }
        input {
            font-family: inherit;
            font-size: inherit;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 10px 14px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            background: var(--color-surface);
            color: var(--color-text);
        }
        input:focus {
            border-color: var(--color-primary-lighter);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
            outline: none;
        }
        input::placeholder {
            color: var(--color-text-muted);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        @media (min-width: 1280px) {
            .container {
                max-width: 1240px;
            }
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            background: var(--color-surface);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
            border-bottom: 1px solid var(--color-border-light);
        }
        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 16px;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
            letter-spacing: -0.01em;
            transition: opacity var(--transition-fast);
        }
        .header-logo:hover {
            opacity: 0.85;
            color: var(--color-primary);
        }
        .header-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-lighter));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .header-search-wrap {
            position: relative;
            display: none;
        }
        @media (min-width: 640px) {
            .header-search-wrap {
                display: block;
            }
        }
        .header-search-wrap input {
            width: 200px;
            padding: 8px 14px 8px 36px;
            border-radius: 20px;
            font-size: 0.9rem;
            background: var(--color-bg-alt);
            border: 1px solid transparent;
            transition: all var(--transition-base);
        }
        .header-search-wrap input:focus {
            background: var(--color-surface);
            border-color: var(--color-primary-lighter);
            width: 240px;
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.08);
        }
        .header-search-wrap .search-icon {
            position: absolute;
            left: 13px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--color-text-muted);
            font-size: 0.85rem;
            pointer-events: none;
            transition: color var(--transition-fast);
        }
        .header-search-wrap input:focus~.search-icon {
            color: var(--color-primary-lighter);
        }

        .btn-cta-sm {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.9rem;
            background: var(--color-live);
            color: #fff;
            transition: all var(--transition-base);
            white-space: nowrap;
            box-shadow: 0 2px 8px rgba(220, 38, 38, 0.25);
        }
        .btn-cta-sm:hover {
            background: #b91c1c;
            box-shadow: 0 4px 14px rgba(220, 38, 38, 0.35);
            transform: translateY(-1px);
            color: #fff;
        }
        .btn-cta-sm:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(220, 38, 38, 0.2);
        }
        .btn-cta-sm .live-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #fff;
            animation: pulse-dot 1.6s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.6);
            }
            50% {
                opacity: 0.5;
                box-shadow: 0 0 0 8px rgba(255, 255, 255, 0);
            }
        }

        /* 频道导航行 */
        .header-channel-row {
            border-top: 1px solid var(--color-border-light);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
            display: flex;
            align-items: center;
            gap: 0;
        }
        .header-channel-row::-webkit-scrollbar {
            display: none;
        }
        .channel-nav-list {
            display: flex;
            align-items: center;
            gap: 2px;
            padding: 4px 0;
            flex-shrink: 0;
            min-width: max-content;
        }
        .channel-nav-link {
            display: inline-flex;
            align-items: center;
            padding: 10px 16px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
            letter-spacing: 0.01em;
        }
        .channel-nav-link:hover {
            color: var(--color-text);
            background: var(--color-bg-alt);
        }
        .channel-nav-link.active {
            color: var(--color-primary-lighter);
            font-weight: 600;
            background: rgba(37, 99, 235, 0.06);
        }
        .channel-nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--color-primary-lighter);
        }
        @media (min-width: 768px) {
            .channel-nav-link {
                padding: 12px 18px;
                font-size: 0.95rem;
            }
            .channel-nav-list {
                gap: 4px;
            }
        }

        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            color: var(--color-text);
            font-size: 1.3rem;
            transition: background var(--transition-fast);
            flex-shrink: 0;
        }
        .mobile-menu-btn:hover {
            background: var(--color-bg-alt);
        }
        @media (min-width: 768px) {
            .mobile-menu-btn {
                display: none;
            }
        }
        .mobile-search-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            color: var(--color-text-secondary);
            font-size: 1.1rem;
            transition: all var(--transition-fast);
        }
        .mobile-search-btn:hover {
            color: var(--color-text);
            background: var(--color-bg-alt);
        }
        @media (min-width: 640px) {
            .mobile-search-btn {
                display: none;
            }
        }

        /* ========== HERO ========== */
        .hero-section {
            background: linear-gradient(160deg, #0f1a2e 0%, #1a365d 35%, #1e40af 70%, #1a365d 100%);
            color: #fff;
            padding: 60px 0 70px;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.04) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -40px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-inner {
            display: flex;
            flex-direction: column;
            gap: 36px;
            position: relative;
            z-index: 1;
        }
        @media (min-width: 768px) {
            .hero-inner {
                flex-direction: row;
                align-items: center;
                gap: 50px;
            }
        }
        .hero-text {
            flex: 1;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(6px);
            font-size: 0.85rem;
            font-weight: 500;
            color: #fbbf24;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
            border: 1px solid rgba(255, 255, 255, 0.12);
        }
        .hero-badge .badge-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #22c55e;
            animation: pulse-dot 2s infinite;
        }
        .hero-title {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            color: #fff;
        }
        .hero-title .highlight {
            color: #fbbf24;
        }
        @media (min-width: 640px) {
            .hero-title {
                font-size: 2.8rem;
            }
        }
        @media (min-width: 1024px) {
            .hero-title {
                font-size: 3.4rem;
            }
        }
        .hero-subtitle {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.78);
            line-height: 1.7;
            margin-bottom: 26px;
            max-width: 520px;
        }
        @media (min-width: 768px) {
            .hero-subtitle {
                font-size: 1.1rem;
            }
        }
        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 28px;
            font-weight: 700;
            font-size: 1rem;
            background: #f59e0b;
            color: #1a365d;
            transition: all var(--transition-base);
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.35);
            letter-spacing: 0.01em;
        }
        .btn-hero-primary:hover {
            background: #fbbf24;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(245, 158, 11, 0.45);
            color: #1a365d;
        }
        .btn-hero-primary:active {
            transform: translateY(0);
        }
        .btn-hero-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 28px;
            font-weight: 600;
            font-size: 1rem;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.25);
            transition: all var(--transition-base);
            backdrop-filter: blur(4px);
        }
        .btn-hero-secondary:hover {
            background: rgba(255, 255, 255, 0.18);
            border-color: rgba(255, 255, 255, 0.4);
            color: #fff;
            transform: translateY(-2px);
        }
        .hero-visual {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 200px;
        }
        .hero-visual-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-xl);
            padding: 28px 24px;
            text-align: center;
            backdrop-filter: blur(8px);
            max-width: 340px;
            width: 100%;
        }
        .hero-visual-card .match-teams {
            font-size: 1.6rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            margin-bottom: 10px;
            color: #fff;
        }
        .hero-visual-card .match-vs {
            color: #fbbf24;
            margin: 0 8px;
        }
        .hero-visual-card .live-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 12px;
            background: #dc2626;
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
            animation: pulse-bg 2s infinite;
        }
        @keyframes pulse-bg {
            0%,
            100% {
                background: #dc2626;
            }
            50% {
                background: #b91c1c;
            }
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: 60px 0;
        }
        @media (min-width: 768px) {
            .section {
                padding: 80px 0;
            }
        }
        @media (min-width: 1024px) {
            .section {
                padding: 90px 0;
            }
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        @media (min-width: 768px) {
            .section-header {
                margin-bottom: 50px;
            }
        }
        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-primary-lighter);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.01em;
            margin-bottom: 10px;
        }
        @media (min-width: 640px) {
            .section-title {
                font-size: 2rem;
            }
        }
        @media (min-width: 1024px) {
            .section-title {
                font-size: 2.3rem;
            }
        }
        .section-desc {
            color: var(--color-text-secondary);
            font-size: 1rem;
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* ========== CARDS ========== */
        .card-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media (min-width: 640px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }
        @media (min-width: 1024px) {
            .card-grid-3 {
                grid-template-columns: repeat(3, 1fr);
            }
            .card-grid-4 {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }
        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 16px;
            flex-shrink: 0;
        }
        .card-icon.blue {
            background: #eff6ff;
            color: #2563eb;
        }
        .card-icon.green {
            background: #f0fdf4;
            color: #16a34a;
        }
        .card-icon.amber {
            background: #fffbeb;
            color: #d97706;
        }
        .card-icon.red {
            background: #fef2f2;
            color: #dc2626;
        }
        .card-icon.purple {
            background: #faf5ff;
            color: #7c3aed;
        }
        .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
            letter-spacing: -0.005em;
        }
        .card-desc {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* 赛事直播卡片 */
        .match-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 20px 22px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border-light);
            display: flex;
            align-items: center;
            gap: 16px;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .match-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .match-card.live {
            border-left: 4px solid #dc2626;
        }
        .match-card.upcoming {
            border-left: 4px solid #2563eb;
        }
        .match-status {
            font-size: 0.78rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 10px;
            white-space: nowrap;
            letter-spacing: 0.03em;
        }
        .match-status.live-tag {
            background: #fef2f2;
            color: #dc2626;
        }
        .match-status.upcoming-tag {
            background: #eff6ff;
            color: #2563eb;
        }
        .match-info {
            flex: 1;
            min-width: 0;
        }
        .match-teams-name {
            font-weight: 700;
            font-size: 1rem;
            color: var(--color-text);
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .match-meta {
            font-size: 0.82rem;
            color: var(--color-text-secondary);
        }

        /* ========== STATS BAR ========== */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        @media (min-width: 640px) {
            .stats-bar {
                grid-template-columns: repeat(4, 1fr);
                gap: 20px;
            }
        }
        .stat-item {
            text-align: center;
            padding: 20px 16px;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
        }
        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            margin-bottom: 4px;
        }
        @media (min-width: 640px) {
            .stat-number {
                font-size: 2.5rem;
            }
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            font-weight: 500;
        }
        .stat-number .accent {
            color: #f59e0b;
        }

        /* ========== FLOW STEPS ========== */
        .flow-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media (min-width: 640px) {
            .flow-list {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }
        @media (min-width: 1024px) {
            .flow-list {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .flow-step {
            text-align: center;
            padding: 24px 18px;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            position: relative;
            transition: all var(--transition-base);
        }
        .flow-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .flow-step-num {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            margin: 0 auto 14px;
            box-shadow: 0 4px 12px rgba(26, 54, 93, 0.3);
        }
        .flow-step-title {
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 6px;
            color: var(--color-text);
        }
        .flow-step-desc {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.5;
        }

        /* ========== TEAM RANKING ========== */
        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            max-width: 700px;
            margin: 0 auto;
        }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 18px;
            background: var(--color-surface);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-xs);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
        }
        .ranking-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--color-border);
        }
        .ranking-pos {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .ranking-pos.top {
            background: #fef3c7;
            color: #b45309;
        }
        .ranking-pos.mid {
            background: #f1f5f9;
            color: #64748b;
        }
        .ranking-name {
            flex: 1;
            font-weight: 600;
            color: var(--color-text);
            font-size: 0.95rem;
        }
        .ranking-score {
            font-weight: 700;
            color: var(--color-primary);
            font-size: 0.95rem;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-border);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 20px;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--color-text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            background: transparent;
            cursor: pointer;
            transition: background var(--transition-fast);
            letter-spacing: 0.005em;
        }
        .faq-question:hover {
            background: var(--color-bg-alt);
        }
        .faq-question .faq-icon {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }
        .faq-answer {
            padding: 0 20px 18px;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }
        .faq-item.open {
            border-color: var(--color-border);
            box-shadow: var(--shadow-sm);
        }

        /* ========== CTA BANNER ========== */
        .cta-banner {
            background: linear-gradient(135deg, #1a365d 0%, #1e40af 50%, #1d4ed8 100%);
            border-radius: var(--radius-xl);
            padding: 40px 28px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        @media (min-width: 640px) {
            .cta-banner {
                padding: 50px 40px;
            }
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
            pointer-events: none;
        }
        .cta-banner-title {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }
        @media (min-width: 640px) {
            .cta-banner-title {
                font-size: 1.9rem;
            }
        }
        .cta-banner-desc {
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 22px;
            position: relative;
            z-index: 1;
            font-size: 1rem;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }
        .btn-cta-lg {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 15px 32px;
            border-radius: 28px;
            font-weight: 700;
            font-size: 1.05rem;
            background: #f59e0b;
            color: #1a365d;
            transition: all var(--transition-base);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.3);
            position: relative;
            z-index: 1;
            letter-spacing: 0.01em;
        }
        .btn-cta-lg:hover {
            background: #fbbf24;
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(245, 158, 11, 0.4);
            color: #1a365d;
        }
        .btn-cta-lg:active {
            transform: translateY(0);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0f1a2e;
            color: rgba(255, 255, 255, 0.7);
            padding: 40px 0 24px;
            font-size: 0.9rem;
        }
        .footer-inner {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        @media (min-width: 640px) {
            .footer-inner {
                flex-direction: row;
                justify-content: space-between;
                align-items: flex-start;
                gap: 40px;
            }
        }
        .footer-brand {
            flex-shrink: 0;
        }
        .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }
        .footer-desc {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
            max-width: 280px;
            line-height: 1.6;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }
        .footer-link-group {
            min-width: 100px;
        }
        .footer-link-group-title {
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
            font-size: 0.9rem;
        }
        .footer-link-group a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.85rem;
            padding: 3px 0;
            transition: color var(--transition-fast);
        }
        .footer-link-group a:hover {
            color: rgba(255, 255, 255, 0.9);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 30px;
            padding-top: 18px;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ========== UTILITY ========== */
        .text-accent {
            color: #f59e0b;
        }
        .divider {
            width: 60px;
            height: 3px;
            border-radius: 3px;
            background: var(--color-primary-lighter);
            margin: 0 auto 20px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        @media (max-width: 767px) {
            .hide-mobile {
                display: none !important;
            }
        }
        @media (min-width: 768px) {
            .hide-desktop {
                display: none !important;
            }
        }

        /* 滚动动画 */
        .fade-in-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-in-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* 响应式微调 */
        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-subtitle {
                font-size: 0.9rem;
            }
            .btn-hero-primary,
            .btn-hero-secondary {
                padding: 12px 22px;
                font-size: 0.9rem;
                width: 100%;
                justify-content: center;
            }
            .hero-cta-group {
                flex-direction: column;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .card-grid {
                gap: 14px;
            }
            .match-card {
                flex-wrap: wrap;
                gap: 10px;
            }
            .stats-bar {
                gap: 10px;
            }
            .stat-number {
                font-size: 1.5rem;
            }
            .cta-banner {
                border-radius: var(--radius-lg);
                padding: 30px 18px;
            }
            .cta-banner-title {
                font-size: 1.3rem;
            }
        }