:root {
            --primary-color: #007bff;
            --secondary-color: #6c757d;
            --accent-color: #28a745;
            --dark-color: #343a40;
            --light-color: #f8f9fa;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            line-height: 1.8;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
        }
        .navbar-brand {
            font-weight: 700;
            color: var(--primary-color) !important;
            font-size: 1.8rem;
        }
        .nav-link {
            font-weight: 500;
            transition: color 0.3s ease;
        }
        .nav-link:hover {
            color: var(--accent-color) !important;
        }
        header {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://via.placeholder.com/1920x600/007bff/ffffff?text=世界杯背景') center/cover no-repeat;
            color: white;
            padding: 100px 0;
            margin-bottom: 40px;
        }
        section {
            padding: 60px 0;
            border-bottom: 1px solid #dee2e6;
        }
        section:last-of-type {
            border-bottom: none;
        }
        h1, h2, h3 {
            font-weight: 700;
            margin-bottom: 1.5rem;
            color: var(--dark-color);
        }
        .hero-title {
            font-size: 3.5rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
        }
        .card {
            border: none;
            border-radius: 15px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.2);
        }
        .card-img-top {
            height: 200px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .card:hover .card-img-top {
            transform: scale(1.05);
        }
        .btn-primary {
            background-color: var(--primary-color);
            border: none;
            padding: 12px 30px;
            border-radius: 50px;
            font-weight: 600;
            transition: background-color 0.3s ease, transform 0.2s ease;
        }
        .btn-primary:hover {
            background-color: #0056b3;
            transform: scale(1.05);
        }
        .live-score {
            background: linear-gradient(90deg, #ff6b6b, #ffa500);
            color: white;
            padding: 20px;
            border-radius: 10px;
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0% { box-shadow: 0 0 0 0 rgba(255, 107, 107, 0.7); }
            70% { box-shadow: 0 0 0 10px rgba(255, 107, 107, 0); }
            100% { box-shadow: 0 0 0 0 rgba(255, 107, 107, 0); }
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
        }
        .stat-item {
            background: white;
            padding: 20px;
            border-radius: 10px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .friendlink {
            background-color: var(--light-color);
            padding: 40px 0;
        }
        .flink {
            display: inline-block;
            margin: 10px 15px;
            padding: 10px 20px;
            background: white;
            border-radius: 8px;
            color: var(--dark-color);
            text-decoration: none;
            border: 2px solid transparent;
            transition: all 0.3s ease;
        }
        .flink:hover {
            border-color: var(--primary-color);
            color: var(--primary-color);
            transform: translateY(-3px);
        }
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 40px 0;
        }
        footer a {
            color: #adb5bd;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        footer a:hover {
            color: white;
        }
        .schema-hidden {
            display: none;
        }