:root {
            --primary-color: #1e3a8a;
            --secondary-color: #dc2626;
            --accent-color: #f59e0b;
            --light-color: #f8fafc;
            --dark-color: #0f172a;
            --text-color: #334155;
        }
        body {
            font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            color: var(--text-color);
            line-height: 1.8;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            color: var(--dark-color);
            font-weight: 700;
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            padding: 1rem 0;
            transition: all 0.3s ease;
        }
        .navbar-brand {
            font-weight: 800;
            color: var(--primary-color) !important;
            font-size: 1.5rem;
        }
        .nav-link {
            font-weight: 600;
            color: var(--dark-color) !important;
            margin: 0 0.5rem;
            transition: color 0.3s;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--secondary-color) !important;
        }
        .hero-section {
            background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
            color: white;
            padding: 6rem 0;
            position: relative;
            overflow: hidden;
        }
        .hero-section h1 {
            color: white;
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
        }
        .hero-section .lead {
            font-size: 1.25rem;
            margin-bottom: 2rem;
        }
        .btn-primary {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            padding: 0.75rem 2rem;
            font-weight: 600;
            transition: all 0.3s;
        }
        .btn-primary:hover {
            background-color: #b91c1c;
            border-color: #b91c1c;
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(220, 38, 38, 0.3);
        }
        .section-title {
            position: relative;
            padding-bottom: 1rem;
            margin-bottom: 3rem;
            text-align: center;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background-color: var(--secondary-color);
        }
        .card {
            border: none;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s, box-shadow 0.3s;
            height: 100%;
        }
        .card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
        }
        .card-img-top {
            height: 220px;
            object-fit: cover;
        }
        .feature-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--primary-color), #3b82f6);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            margin-bottom: 1.5rem;
        }
        .live-score {
            background-color: #fef2f2;
            border-left: 5px solid var(--secondary-color);
            padding: 1.5rem;
            border-radius: 8px;
            margin-bottom: 2rem;
        }
        .match-team {
            font-size: 1.5rem;
            font-weight: 700;
        }
        .match-score {
            font-size: 3rem;
            font-weight: 800;
            color: var(--secondary-color);
            margin: 0 1rem;
        }
        .stats-table th {
            background-color: var(--primary-color);
            color: white;
            border: none;
        }
        .stats-table td {
            vertical-align: middle;
        }
        .analysis-box {
            background-color: #f8fafc;
            border-radius: 12px;
            padding: 2rem;
            margin-bottom: 2rem;
            border: 1px solid #e2e8f0;
        }
        .friendlink {
            background-color: #f1f5f9;
            padding: 4rem 0;
        }
        .flink {
            display: inline-block;
            background-color: white;
            padding: 0.8rem 1.5rem;
            margin: 0.5rem;
            border-radius: 8px;
            color: var(--primary-color);
            font-weight: 600;
            text-decoration: none;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
            transition: all 0.3s;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-3px);
        }
        footer {
            background-color: var(--dark-color);
            color: #cbd5e1;
            padding: 4rem 0 2rem;
        }
        footer a {
            color: #cbd5e1;
            text-decoration: none;
            transition: color 0.3s;
        }
        footer a:hover {
            color: white;
        }
        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 2rem;
            margin-top: 3rem;
            font-size: 0.9rem;
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background-color: var(--secondary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            text-decoration: none;
            opacity: 0;
            transition: opacity 0.3s, transform 0.3s;
            z-index: 1000;
        }
        .back-to-top.visible {
            opacity: 1;
        }
        .back-to-top:hover {
            background-color: #b91c1c;
            transform: translateY(-5px);
        }
        .team-logo {
            width: 60px;
            height: 60px;
            object-fit: contain;
        }
        .prediction-card {
            border: 2px solid var(--accent-color);
            background: linear-gradient(135deg, #fff7ed, #fed7aa);
        }
        .form-check-input:checked {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
        }
        .timeline {
            position: relative;
            padding-left: 2rem;
        }
        .timeline:before {
            content: '';
            position: absolute;
            left: 7px;
            top: 0;
            bottom: 0;
            width: 2px;
            background-color: var(--primary-color);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 2rem;
        }
        .timeline-item:before {
            content: '';
            position: absolute;
            left: -2.1rem;
            top: 5px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background-color: var(--secondary-color);
            border: 3px solid white;
            box-shadow: 0 0 0 2px var(--secondary-color);
        }