:root {
            --primary-color: #1a237e;
            --secondary-color: #0d47a1;
            --accent-color: #ff9800;
            --light-bg: #f5f7fa;
            --text-dark: #212529;
            --text-light: #6c757d;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: var(--text-dark);
            line-height: 1.7;
        }
        .navbar {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            padding: 1rem 0;
            transition: all 0.3s ease;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
            color: white !important;
        }
        .nav-link {
            color: rgba(255, 255, 255, 0.9) !important;
            font-weight: 500;
            margin: 0 8px;
            transition: all 0.3s;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--accent-color) !important;
            transform: translateY(-2px);
        }
        .hero {
            background: linear-gradient(rgba(26, 35, 126, 0.85), rgba(13, 71, 161, 0.9)), url('https://images.unsplash.com/photo-1575361204480-aadea25e6e68?ixlib=rb-4.0.3&auto=format&fit=crop&w=2071&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 120px 0 80px;
            position: relative;
        }
        .hero h1 {
            font-weight: 800;
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
        }
        .hero-subtitle {
            font-size: 1.3rem;
            opacity: 0.9;
            max-width: 700px;
            margin: 0 auto 2rem;
        }
        .feature-card {
            background: white;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.4s ease;
            height: 100%;
            border: none;
            overflow: hidden;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
        }
        .feature-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: white;
            font-size: 1.8rem;
        }
        .match-prediction {
            background: var(--light-bg);
            border-radius: 16px;
            padding: 2.5rem;
            margin: 3rem 0;
            border-left: 5px solid var(--accent-color);
        }
        .team-flag {
            width: 80px;
            height: 60px;
            object-fit: cover;
            border-radius: 8px;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
        }
        .vs-badge {
            background: var(--accent-color);
            color: white;
            padding: 8px 20px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1.2rem;
        }
        .data-table {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .data-table th {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            border: none;
            padding: 1rem;
        }
        .data-table td {
            padding: 1rem;
            border-color: #f1f1f1;
        }
        .data-table tr:hover {
            background-color: rgba(26, 35, 126, 0.05);
        }
        .friendlink {
            background: var(--light-bg);
            padding: 4rem 0;
        }
        .flink {
            display: inline-block;
            background: white;
            padding: 12px 24px;
            margin: 8px;
            border-radius: 8px;
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
            border: 1px solid #eaeaea;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(26, 35, 126, 0.2);
            text-decoration: none;
        }
        .footer {
            background: linear-gradient(135deg, #0d1b2a, #1b263b);
            color: white;
            padding: 4rem 0 2rem;
        }
        .footer a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            transition: all 0.3s;
        }
        .footer a:hover {
            color: var(--accent-color);
            padding-left: 5px;
        }
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }
            .hero-subtitle {
                font-size: 1.1rem;
            }
            .match-prediction {
                padding: 1.5rem;
            }
            .team-flag {
                width: 60px;
                height: 45px;
            }
        }
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-in {
            animation: fadeInUp 0.8s ease forwards;
        }
        .prediction-bar {
            height: 10px;
            border-radius: 5px;
            background: #e9ecef;
            overflow: hidden;
            margin: 10px 0;
        }
        .prediction-fill {
            height: 100%;
            border-radius: 5px;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
        }