:root {
            --primary-blue: #1e3a8a;
            --secondary-blue: #3b82f6;
            --accent-green: #10b981;
            --light-bg: #f8fafc;
            --dark-text: #1e293b;
            --border-color: #e2e8f0;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: var(--dark-text);
            line-height: 1.6;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-blue);
        }
        .hero-section {
            background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
            color: white;
            padding: 6rem 0;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 100%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 1px, transparent 1px);
            background-size: 30px 30px;
            opacity: 0.3;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 2.5rem;
            text-align: center;
            font-weight: 700;
            color: var(--primary-blue);
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--accent-green);
            border-radius: 2px;
        }
        .feature-card {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            height: 100%;
            background: white;
        }
        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .feature-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--secondary-blue), var(--primary-blue));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: white;
            font-size: 1.8rem;
        }
        .data-stats {
            background-color: var(--light-bg);
            padding: 4rem 0;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary-blue);
            line-height: 1;
        }
        .prediction-card {
            border-left: 5px solid var(--accent-green);
            background: white;
            padding: 1.5rem;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin-bottom: 1.5rem;
        }
        .team-logo {
            width: 50px;
            height: 50px;
            object-fit: contain;
        }
        .match-odds {
            display: inline-block;
            padding: 0.3rem 0.8rem;
            background: var(--accent-green);
            color: white;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 600;
        }
        footer {
            background-color: #0f172a;
            color: #cbd5e1;
            padding-top: 3rem;
        }
        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            transition: color 0.2s;
            display: block;
            margin-bottom: 0.5rem;
        }
        .footer-links a:hover {
            color: white;
        }
        .copyright {
            border-top: 1px solid #334155;
            padding: 1.5rem 0;
            margin-top: 3rem;
            font-size: 0.9rem;
            color: #94a3b8;
        }
        .flink {
            display: inline-block;
            background: white;
            padding: 0.8rem 1.5rem;
            border-radius: 8px;
            margin: 0.5rem;
            border: 1px solid var(--border-color);
            color: var(--dark-text);
            text-decoration: none;
            transition: all 0.3s ease;
            font-weight: 500;
        }
        .flink:hover {
            background: var(--secondary-blue);
            color: white;
            border-color: var(--secondary-blue);
            transform: translateY(-3px);
        }
        .friendlink {
            background-color: var(--light-bg);
            padding: 4rem 0;
        }
        .article-content {
            font-size: 1.1rem;
            line-height: 1.8;
        }
        .article-content h3 {
            color: var(--primary-blue);
            margin-top: 2rem;
            margin-bottom: 1rem;
        }
        .article-content p {
            margin-bottom: 1.5rem;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 4rem 0;
                text-align: center;
            }
            .stat-number {
                font-size: 2.5rem;
            }
        }