/* roulang page: index */
:root {
            --primary: #E53935;
            --primary-dark: #B71C1C;
            --primary-light: #EF5350;
            --secondary: #FFC107;
            --secondary-dark: #FF8F00;
            --dark: #0F0F1A;
            --darker: #161625;
            --nav-bg: #111122;
            --card-dark: #1A1A2E;
            --card-darker: #141428;
            --muted: #9E9E9E;
            --text-soft: #B0B0B8;
            --accent: #FF6D00;
            --accent-green: #00E676;
            --border-soft: #2A2A3C;
            --sidebar-width: 250px;
            --topbar-height: 64px;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 40px rgba(229, 57, 53, 0.25);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.7;
            background-color: var(--dark);
            color: #E0E0E0;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 3px;
            border-radius: 4px;
        }

        input {
            font-family: inherit;
        }

        /* ============ 左侧导航栏 ============ */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--nav-bg);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            border-right: 1px solid var(--border-soft);
            transition: transform var(--transition-slow), box-shadow var(--transition-normal);
            overflow-y: auto;
            overflow-x: hidden;
        }

        .sidebar-logo {
            padding: 28px 24px 20px;
            border-bottom: 1px solid var(--border-soft);
            flex-shrink: 0;
        }

        .sidebar-logo .logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            color: #ffffff;
            display: flex;
            align-items: center;
            gap: 10px;
            line-height: 1.2;
        }

        .sidebar-logo .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #fff;
            flex-shrink: 0;
        }

        .sidebar-nav {
            flex: 1;
            padding: 16px 14px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .sidebar-nav .nav-link {
            display: flex;
            align-items: center;
            gap: 11px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-soft);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            position: relative;
        }

        .sidebar-nav .nav-link:hover {
            background: rgba(255, 255, 255, 0.05);
            color: #ffffff;
        }

        .sidebar-nav .nav-link.active {
            background: linear-gradient(135deg, rgba(229, 57, 53, 0.25), rgba(229, 57, 53, 0.08));
            color: #ffffff;
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--primary);
        }

        .sidebar-nav .nav-link .nav-icon {
            width: 20px;
            text-align: center;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .sidebar-cta {
            padding: 16px 18px 24px;
            border-top: 1px solid var(--border-soft);
            flex-shrink: 0;
        }

        .sidebar-cta .live-badge {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 15px;
            background: linear-gradient(135deg, rgba(229, 57, 53, 0.3), rgba(229, 57, 53, 0.1));
            border: 1px solid rgba(229, 57, 53, 0.35);
            border-radius: var(--radius-sm);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 600;
            transition: all var(--transition-fast);
        }

        .sidebar-cta .live-badge:hover {
            background: linear-gradient(135deg, rgba(229, 57, 53, 0.5), rgba(229, 57, 53, 0.2));
            border-color: var(--primary);
            box-shadow: var(--shadow-glow);
        }

        .live-dot {
            width: 10px;
            height: 10px;
            background: var(--accent-green);
            border-radius: 50%;
            animation: pulse-dot 1.6s infinite;
            flex-shrink: 0;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(0, 230, 118, 0.7);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(0, 230, 118, 0);
            }
        }

        /* ============ 主内容区 ============ */
        .main-content {
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            transition: margin-left var(--transition-slow);
        }

        /* ============ 移动端顶部导航 ============ */
        .topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--topbar-height);
            background: var(--nav-bg);
            z-index: 999;
            align-items: center;
            justify-content: space-between;
            padding: 0 18px;
            border-bottom: 1px solid var(--border-soft);
        }

        .topbar-logo {
            font-weight: 800;
            font-size: 1.1rem;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .topbar-logo .logo-icon-sm {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            color: #fff;
            flex-shrink: 0;
        }

        .hamburger {
            display: flex;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
            cursor: pointer;
            z-index: 1002;
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: #fff;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 998;
            backdrop-filter: blur(2px);
        }
        .mobile-overlay.show {
            display: block;
        }

        /* ============ Hero 板块 ============ */
        .hero-section {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: var(--darker);
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.45;
            z-index: 0;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 15, 26, 0.55) 0%, rgba(15, 15, 26, 0.85) 60%, var(--dark) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            padding: 60px 40px;
            max-width: 750px;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 7px 16px;
            background: rgba(229, 57, 53, 0.2);
            border: 1px solid rgba(229, 57, 53, 0.4);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 20px;
            animation: fadeInUp 0.7s ease forwards;
        }

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

        .hero-title {
            font-size: 3.2rem;
            font-weight: 900;
            line-height: 1.15;
            color: #ffffff;
            margin: 0 0 18px;
            letter-spacing: 0.02em;
            animation: fadeInUp 0.7s ease 0.1s forwards;
            opacity: 0;
            animation-fill-mode: forwards;
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, var(--primary-light), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-soft);
            margin: 0 0 32px;
            line-height: 1.7;
            max-width: 550px;
            animation: fadeInUp 0.7s ease 0.2s forwards;
            opacity: 0;
            animation-fill-mode: forwards;
        }

        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            animation: fadeInUp 0.7s ease 0.3s forwards;
            opacity: 0;
            animation-fill-mode: forwards;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(28px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition-normal);
            cursor: pointer;
            letter-spacing: 0.01em;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border: none;
            box-shadow: 0 4px 18px rgba(229, 57, 53, 0.35);
        }

        .btn-primary:hover {
            box-shadow: 0 8px 28px rgba(229, 57, 53, 0.5);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.3);
        }

        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.06);
            transform: translateY(-2px);
        }

        .btn-accent {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            color: #1a1a1a;
            border: none;
            font-weight: 700;
            box-shadow: 0 4px 18px rgba(255, 193, 7, 0.3);
        }

        .btn-accent:hover {
            box-shadow: 0 8px 28px rgba(255, 193, 7, 0.5);
            transform: translateY(-2px);
        }

        /* ============ 板块通用样式 ============ */
        .section-block {
            padding: 80px 40px;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--primary-light);
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            margin: 0 0 14px;
            line-height: 1.25;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-soft);
            margin: 0 0 40px;
            max-width: 600px;
        }

        .section-alt {
            background: var(--darker);
        }

        /* ============ 卡片样式 ============ */
        .card {
            background: var(--card-dark);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-normal);
        }

        .card:hover {
            border-color: rgba(255, 255, 255, 0.15);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .card-image {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }

        .card-body {
            padding: 20px 22px;
        }

        .card-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 10px;
        }

        .card-tag.live {
            background: rgba(0, 230, 118, 0.15);
            color: var(--accent-green);
            border: 1px solid rgba(0, 230, 118, 0.3);
        }

        .card-tag.upcoming {
            background: rgba(255, 193, 7, 0.15);
            color: var(--secondary);
            border: 1px solid rgba(255, 193, 7, 0.3);
        }

        .card-tag.hot {
            background: rgba(229, 57, 53, 0.15);
            color: var(--primary-light);
            border: 1px solid rgba(229, 57, 53, 0.3);
        }

        .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 8px;
            line-height: 1.35;
        }

        .card-text {
            font-size: 0.9rem;
            color: var(--text-soft);
            margin: 0;
            line-height: 1.55;
        }

        /* ============ 数据统计 ============ */
        .stat-card {
            background: var(--card-darker);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition-normal);
        }

        .stat-card:hover {
            border-color: rgba(255, 255, 255, 0.2);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .stat-number {
            font-size: 2.8rem;
            font-weight: 900;
            color: #fff;
            line-height: 1;
            margin-bottom: 6px;
            letter-spacing: 0.02em;
        }

        .stat-number.gradient-red {
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .stat-number.gradient-gold {
            background: linear-gradient(135deg, var(--secondary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-soft);
            font-weight: 500;
        }

        /* ============ FAQ 样式 ============ */
        .faq-item {
            background: var(--card-dark);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.12);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            background: transparent;
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            border: none;
            text-align: left;
            gap: 14px;
            transition: background var(--transition-fast);
        }

        .faq-question:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .faq-icon {
            flex-shrink: 0;
            font-size: 0.8rem;
            transition: transform var(--transition-normal);
            color: var(--primary-light);
        }

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

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

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 22px 20px;
            color: var(--text-soft);
            font-size: 0.9rem;
            line-height: 1.65;
        }

        /* ============ CTA 板块 ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-title {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin: 0 0 14px;
            position: relative;
            z-index: 1;
        }

        .cta-text {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            margin: 0 0 28px;
            position: relative;
            z-index: 1;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--darker);
            border-top: 1px solid var(--border-soft);
            padding: 40px;
            text-align: center;
        }

        .footer-brand {
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 8px;
        }

        .footer-info {
            font-size: 0.85rem;
            color: var(--muted);
            margin: 0;
            line-height: 1.6;
        }

        .footer-info a {
            color: var(--text-soft);
            transition: color var(--transition-fast);
        }

        .footer-info a:hover {
            color: #fff;
        }

        /* ============ 时间线/赛程表 ============ */
        .match-row {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            background: var(--card-dark);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-sm);
            margin-bottom: 10px;
            transition: all var(--transition-fast);
            flex-wrap: wrap;
        }

        .match-row:hover {
            border-color: rgba(255, 255, 255, 0.18);
            box-shadow: var(--shadow-sm);
        }

        .match-time {
            font-weight: 700;
            color: var(--secondary);
            font-size: 0.9rem;
            min-width: 55px;
            text-align: center;
        }

        .match-teams {
            font-weight: 600;
            color: #fff;
            flex: 1;
            min-width: 140px;
        }

        .match-status-badge {
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.04em;
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .sidebar {
                transform: translateX(-100%);
                box-shadow: none;
            }

            .sidebar.open {
                transform: translateX(0);
                box-shadow: var(--shadow-lg);
            }

            .topbar {
                display: flex;
            }

            .main-content {
                margin-left: 0;
                padding-top: var(--topbar-height);
            }

            .hero-section {
                min-height: 70vh;
            }

            .hero-content {
                padding: 40px 24px;
            }

            .hero-title {
                font-size: 2.2rem;
            }

            .hero-desc {
                font-size: 1rem;
            }

            .section-block {
                padding: 50px 24px;
            }

            .section-title {
                font-size: 1.7rem;
            }

            .cta-section {
                padding: 40px 24px;
                border-radius: var(--radius-md);
            }

            .cta-title {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 768px) {
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-desc {
                font-size: 0.9rem;
            }
            .hero-content {
                padding: 32px 18px;
            }
            .hero-section {
                min-height: 60vh;
            }
            .section-block {
                padding: 40px 16px;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .section-subtitle {
                font-size: 0.9rem;
                margin-bottom: 28px;
            }
            .btn {
                padding: 12px 22px;
                font-size: 0.85rem;
            }
            .stat-number {
                font-size: 2rem;
            }
            .card-body {
                padding: 14px 16px;
            }
            .card-title {
                font-size: 1rem;
            }
            .match-row {
                gap: 10px;
                padding: 12px 14px;
            }
            .site-footer {
                padding: 28px 16px;
            }
            .hero-btns {
                flex-direction: column;
                gap: 10px;
            }
            .hero-btns .btn {
                width: 100%;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.5rem;
            }
            .hero-section {
                min-height: 55vh;
            }
            .hero-content {
                padding: 24px 14px;
            }
            .section-block {
                padding: 32px 12px;
            }
            .section-title {
                font-size: 1.25rem;
            }
            .card {
                border-radius: var(--radius-sm);
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-answer-inner {
                padding: 0 16px 16px;
                font-size: 0.82rem;
            }
            .stat-card {
                padding: 20px 16px;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .cta-section {
                padding: 30px 16px;
            }
        }