:root {
            --primary-color: #1a365d;
            --secondary-color: #e53e3e;
            --accent-color: #38a169;
            --light-bg: #f7fafc;
            --dark-text: #2d3748;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: var(--dark-text);
            line-height: 1.8;
        }
        header {
            background: linear-gradient(135deg, var(--primary-color) 0%, #2c5282 100%);
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
        }
        .hero-section {
            background: url('https://picsum.photos/seed/worldcup/1920/800') center/cover no-repeat;
            min-height: 80vh;
            display: flex;
            align-items: center;
            position: relative;
        }
        .hero-overlay {
            background: rgba(0, 0, 0, 0.6);
            position: absolute;
            top: 0; left: 0; width: 100%; height: 100%;
        }
        .hero-content {
            z-index: 2;
            color: white;
        }
        .section-title {
            color: var(--primary-color);
            border-left: 5px solid var(--secondary-color);
            padding-left: 15px;
            margin-bottom: 2rem;
        }
        .card {
            border: none;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.15);
        }
        .live-score {
            background: linear-gradient(90deg, #2b5876 0%, #4e4376 100%);
            color: white;
            border-radius: 12px;
            padding: 20px;
            font-size: 1.2rem;
        }
        .flink {
            display: inline-block;
            background: var(--light-bg);
            padding: 10px 20px;
            margin: 5px;
            border-radius: 25px;
            text-decoration: none;
            color: var(--primary-color);
            transition: all 0.3s;
            border: 2px solid transparent;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--secondary-color);
        }
        footer {
            background: var(--primary-color);
            color: white;
        }
        .contact-info a {
            color: var(--accent-color);
            text-decoration: none;
        }
        .contact-info a:hover {
            text-decoration: underline;
        }
        .img-fluid {
            border-radius: 10px;
        }
        .btn-primary {
            background-color: var(--secondary-color);
            border: none;
            padding: 12px 30px;
            border-radius: 30px;
            font-weight: 600;
            transition: background-color 0.3s;
        }
        .btn-primary:hover {
            background-color: #c53030;
        }
        @media (max-width: 768px) {
            .hero-section {
                min-height: 60vh;
            }
            .display-4 {
                font-size: 2.5rem;
            }
        }