/* roulang page: index */
:root {
            --bg-primary: #0a0a14;
            --bg-secondary: #111122;
            --bg-card: #16162a;
            --bg-surface: #1a1a30;
            --border-color: #1e1e3a;
            --border-glow: #2a2a50;
            --text-primary: #f0f0f5;
            --text-secondary: #b0b0c8;
            --text-muted: #70708a;
            --accent-cyan: #00f0ff;
            --accent-magenta: #e040fb;
            --accent-purple: #7c3aed;
            --accent-pink: #ff2d78;
            --accent-green: #00e676;
            --accent-gold: #ffab00;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4), 0 1px 3px rgba(120, 60, 220, 0.08);
            --shadow-glow: 0 0 40px rgba(0, 240, 255, 0.12), 0 0 80px rgba(224, 64, 251, 0.06);
            --shadow-btn: 0 4px 18px rgba(0, 240, 255, 0.25);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent-cyan);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
        }
        input {
            font-family: inherit;
            outline: none;
        }

        /* 容器 */
        .container-custom {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 768px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* 导航 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 10, 20, 0.82);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: all var(--transition-smooth);
        }
        .site-header.scrolled {
            background: rgba(10, 10, 20, 0.95);
            border-bottom-color: var(--border-glow);
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.5);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: 0.03em;
            color: #fff;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-magenta));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            display: inline-block;
            padding: 10px 16px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .nav-links li a:hover,
        .nav-links li a.active {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-links li a.nav-cta {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            color: #fff;
            font-weight: 600;
            padding: 10px 20px;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.2);
            border-radius: 24px;
        }
        .nav-links li a.nav-cta:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.4);
            transform: translateY(-1px);
            background: linear-gradient(135deg, #33f5ff, #9b5cf6);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            padding: 6px;
            line-height: 1;
            cursor: pointer;
            transition: color var(--transition-fast);
        }
        .mobile-toggle:hover {
            color: var(--accent-cyan);
        }
        @media (max-width: 1024px) {
            .nav-links {
                gap: 2px;
            }
            .nav-links li a {
                padding: 8px 12px;
                font-size: 0.82rem;
            }
        }
        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(10, 10, 20, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 20px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition-smooth);
                pointer-events: none;
                z-index: 999;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links li {
                width: 100%;
            }
            .nav-links li a {
                display: block;
                text-align: center;
                padding: 12px 16px;
                font-size: 0.95rem;
                border-radius: 12px;
            }
            .nav-links li a.nav-cta {
                margin-top: 6px;
            }
        }

        /* Hero */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 100px 20px 60px;
            background: var(--bg-primary);
            overflow: hidden;
        }
        .hero-bg-img {
            position: absolute;
            inset: 0;
            z-index: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.35;
            filter: saturate(0.7) brightness(0.6);
        }
        .hero-glow-1 {
            position: absolute;
            top: 15%;
            left: 10%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.1) 0%, transparent 70%);
            pointer-events: none;
            animation: floatGlow 8s ease-in-out infinite;
        }
        .hero-glow-2 {
            position: absolute;
            bottom: 20%;
            right: 5%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(224, 64, 251, 0.08) 0%, transparent 70%);
            pointer-events: none;
            animation: floatGlow 10s ease-in-out infinite reverse;
        }
        @keyframes floatGlow {
            0%,
            100% {
                transform: translate(0, 0);
            }
            33% {
                transform: translate(30px, -25px);
            }
            66% {
                transform: translate(-20px, 20px);
            }
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--accent-cyan);
            margin-bottom: 20px;
        }
        .hero-title {
            font-size: 3.4rem;
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: 0.02em;
            margin: 0 0 18px;
            color: #fff;
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-magenta));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-subtitle {
            font-size: 1.2rem;
            color: var(--text-secondary);
            margin: 0 0 36px;
            line-height: 1.6;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 28px;
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-smooth);
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            color: #fff;
            box-shadow: var(--shadow-btn);
            border: none;
        }
        .btn-primary:hover {
            box-shadow: 0 6px 30px rgba(0, 240, 255, 0.4);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--border-glow);
            color: #fff;
        }
        .btn-outline:hover {
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
            color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.15);
        }
        .hero-live-indicator {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 30px;
            padding: 8px 16px;
            border-radius: 20px;
            background: rgba(0, 230, 118, 0.08);
            border: 1px solid rgba(0, 230, 118, 0.25);
            font-size: 0.85rem;
            color: var(--accent-green);
            font-weight: 500;
        }
        .live-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent-green);
            animation: pulseDot 1.5s ease-in-out infinite;
        }
        @keyframes pulseDot {
            0%,
            100% {
                box-shadow: 0 0 6px var(--accent-green);
            }
            50% {
                box-shadow: 0 0 20px var(--accent-green), 0 0 36px rgba(0, 230, 118, 0.5);
            }
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .btn {
                padding: 12px 22px;
                font-size: 0.9rem;
            }
            .hero-section {
                min-height: auto;
                padding: 110px 16px 50px;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-btns {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* 板块通用 */
        .section-block {
            padding: 80px 0;
        }
        @media (max-width: 768px) {
            .section-block {
                padding: 50px 0;
            }
        }
        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: #fff;
            margin: 0 0 14px;
            line-height: 1.3;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 40px;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
            .section-desc {
                font-size: 0.95rem;
                margin-bottom: 28px;
            }
        }

        /* 卡片 */
        .card-glow {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .card-glow::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at center, rgba(0, 240, 255, 0.03) 0%, transparent 60%);
            opacity: 0;
            transition: opacity var(--transition-smooth);
            pointer-events: none;
        }
        .card-glow:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .card-glow:hover::before {
            opacity: 1;
        }
        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 16px;
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.15), rgba(224, 64, 251, 0.1));
            color: var(--accent-cyan);
        }
        .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 8px;
        }
        .card-text {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* 比分卡片 */
        .score-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 20px 24px;
            display: flex;
            align-items: center;
            gap: 16px;
            transition: all var(--transition-smooth);
            flex-wrap: wrap;
        }
        .score-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }
        .score-team {
            font-weight: 700;
            font-size: 1rem;
            color: #fff;
            flex: 1;
            min-width: 80px;
            text-align: center;
        }
        .score-num {
            font-size: 2rem;
            font-weight: 900;
            font-family: 'JetBrains Mono', 'Fira Code', monospace;
            color: #fff;
            letter-spacing: 0.04em;
            min-width: 50px;
            text-align: center;
        }
        .score-vs {
            color: var(--text-muted);
            font-size: 0.85rem;
            font-weight: 600;
        }
        .score-badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 14px;
            font-size: 0.7rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            background: rgba(0, 230, 118, 0.12);
            color: var(--accent-green);
            border: 1px solid rgba(0, 230, 118, 0.3);
        }
        .score-badge.upcoming {
            background: rgba(255, 171, 0, 0.1);
            color: var(--accent-gold);
            border-color: rgba(255, 171, 0, 0.3);
        }
        @media (max-width: 520px) {
            .score-card {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .score-num {
                font-size: 1.5rem;
            }
        }

        /* 数据统计 */
        .stat-number {
            font-size: 2.8rem;
            font-weight: 900;
            letter-spacing: 0.02em;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-magenta));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.1;
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* FAQ */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 10px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--border-glow);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            padding: 18px 22px;
            text-align: left;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            letter-spacing: 0.02em;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--accent-cyan);
        }
        .faq-icon {
            font-size: 0.8rem;
            transition: transform var(--transition-smooth);
            color: var(--text-muted);
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            color: var(--accent-cyan);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 22px;
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        /* CTA */
        .cta-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(0, 240, 255, 0.04) 0%, transparent 70%);
            pointer-events: none;
        }

        /* 页脚 */
        .site-footer {
            background: var(--bg-darker, #06060f);
            border-top: 1px solid var(--border-color);
            padding: 40px 0 30px;
        }
        .footer-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            justify-content: space-between;
            align-items: flex-start;
        }
        .footer-brand {
            font-weight: 700;
            font-size: 1.1rem;
            color: #fff;
            letter-spacing: 0.03em;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links a {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--accent-cyan);
        }
        .footer-copy {
            width: 100%;
            text-align: center;
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        @media (max-width: 768px) {
            .footer-inner {
                flex-direction: column;
                align-items: center;
                text-align: center;
                gap: 16px;
            }
            .footer-links {
                justify-content: center;
            }
        }

        /* 图片区块 */
        .img-block {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all var(--transition-smooth);
        }
        .img-block:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }
        .img-block img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* 背景装饰板块 */
        .bg-panel {
            position: relative;
            overflow: hidden;
        }
        .bg-panel .bg-img {
            position: absolute;
            inset: 0;
            z-index: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.2;
            filter: brightness(0.5) saturate(0.6);
        }
        .bg-panel .bg-content {
            position: relative;
            z-index: 1;
        }

        /* 流程步骤 */
        .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.25);
        }
        .step-connector {
            width: 2px;
            height: 30px;
            background: var(--border-glow);
            margin: 0 auto;
        }