:root {
            --primary-color: #1a237e;
            --secondary-color: #0d47a1;
            --accent-color: #ff6f00;
            --light-color: #f5f7fa;
            --dark-color: #121212;
            --success-color: #2e7d32;
            --warning-color: #f57c00;
        }
        body {
            font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .hero-section {
            background: linear-gradient(rgba(18, 18, 18, 0.85), rgba(26, 35, 126, 0.9)), url('https://images.unsplash.com/photo-1594744803329-e58b31de8bf5?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
            color: white;
            padding: 8rem 0 6rem;
            position: relative;
        }
        .hero-title {
            font-size: 3.2rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            text-shadow: 0 3px 10px rgba(0, 0, 0, 0.3);
        }
        .hero-subtitle {
            font-size: 1.4rem;
            opacity: 0.9;
            max-width: 800px;
            margin: 0 auto 2.5rem;
        }
        .feature-card {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: none;
            border-radius: 15px;
            overflow: hidden;
            height: 100%;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15) !important;
        }
        .feature-icon {
            font-size: 3rem;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 1rem;
        }
        .prediction-card {
            border-left: 5px solid var(--accent-color);
            background: linear-gradient(to right, rgba(255, 111, 0, 0.05), transparent);
            transition: all 0.3s ease;
        }
        .prediction-card:hover {
            background: linear-gradient(to right, rgba(255, 111, 0, 0.1), transparent);
        }
        .team-logo {
            width: 70px;
            height: 70px;
            object-fit: contain;
            filter: drop-shadow(0 3px 5px rgba(0, 0, 0, 0.2));
            transition: transform 0.3s ease;
        }
        .team-logo:hover {
            transform: scale(1.1);
        }
        .stat-card {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            border-radius: 15px;
            padding: 2rem;
            height: 100%;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 3rem;
            font-weight: 800;
            color: var(--primary-color);
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 5px;
            background: linear-gradient(90deg, var(--accent-color), var(--primary-color));
            border-radius: 3px;
        }
        .section-title.text-center::after {
            left: 50%;
            transform: translateX(-50%);
        }
        .news-card {
            transition: transform 0.3s ease;
            border: none;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .news-card:hover {
            transform: translateY(-8px);
        }
        .news-date {
            position: absolute;
            top: 15px;
            left: 15px;
            background: var(--accent-color);
            color: white;
            padding: 8px 15px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
        }
        .btn-primary-custom {
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            border: none;
            padding: 12px 30px;
            border-radius: 30px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-primary-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(26, 35, 126, 0.3);
        }
        .btn-accent {
            background: linear-gradient(90deg, var(--accent-color), #ff8f00);
            border: none;
            color: white;
            padding: 12px 30px;
            border-radius: 30px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-accent:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(255, 111, 0, 0.3);
        }
        footer {
            background: linear-gradient(135deg, var(--dark-color), #1a1a2e);
            color: #ddd;
        }
        .footer-links a {
            color: #aaa;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer-links a:hover {
            color: white;
            text-decoration: underline;
        }
        .friendlink {
            background-color: #f8f9fa;
            padding: 4rem 0;
        }
        .flink {
            display: inline-block;
            background: white;
            padding: 12px 25px;
            margin: 8px;
            border-radius: 8px;
            text-decoration: none;
            color: var(--primary-color);
            font-weight: 600;
            border: 1px solid #e0e0e0;
            transition: all 0.3s ease;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .match-prediction-bar {
            height: 10px;
            border-radius: 5px;
            background: #e0e0e0;
            overflow: hidden;
            margin: 10px 0;
        }
        .prediction-fill {
            height: 100%;
            border-radius: 5px;
        }
        .home-win {
            background: linear-gradient(90deg, var(--success-color), #4caf50);
        }
        .draw {
            background: linear-gradient(90deg, #757575, #9e9e9e);
        }
        .away-win {
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
        }
        .sticky-nav {
            position: sticky;
            top: 0;
            z-index: 1020;
            backdrop-filter: blur(10px);
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
        }
        .timeline-item {
            position: relative;
            padding-left: 40px;
            margin-bottom: 2.5rem;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--accent-color);
            border: 4px solid white;
            box-shadow: 0 0 0 3px var(--accent-color);
        }
        .timeline-item::after {
            content: '';
            position: absolute;
            left: 9px;
            top: 28px;
            width: 2px;
            height: calc(100% + 1.5rem);
            background: #e0e0e0;
        }
        .timeline-item:last-child::after {
            display: none;
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.3rem;
            }
            .hero-subtitle {
                font-size: 1.1rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .stat-number {
                font-size: 2.2rem;
            }
        }
        .world-cup-logo {
            max-width: 200px;
            filter: drop-shadow(0 5px 15px rgba(0, 0, 0, 0.2));
        }
        .live-badge {
            background: linear-gradient(90deg, #e53935, #f44336);
            color: white;
            padding: 5px 15px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 700;
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0% { opacity: 1; }
            50% { opacity: 0.7; }
            100% { opacity: 1; }
        }
        .form-control-custom {
            border-radius: 10px;
            border: 1px solid #ddd;
            padding: 15px;
            transition: all 0.3s ease;
        }
        .form-control-custom:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(26, 35, 126, 0.1);
        }