:root {
            --primary-color: #1e3a8a;
            --secondary-color: #dc2626;
            --accent-color: #fbbf24;
            --light-bg: #f8fafc;
            --dark-text: #1f2937;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: var(--dark-text);
            line-height: 1.6;
            overflow-x: hidden;
        }
        header {
            background: linear-gradient(135deg, var(--primary-color), #0f172a);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .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;
            transition: color 0.3s;
        }
        .nav-link:hover {
            color: var(--accent-color) !important;
        }
        .hero {
            background: url('https://images.unsplash.com/photo-1598880940080-ff9a29891b85?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
            padding: 6rem 0;
            position: relative;
            color: white;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .section-title {
            color: var(--primary-color);
            border-bottom: 3px solid var(--accent-color);
            padding-bottom: 0.5rem;
            margin-bottom: 2rem;
            display: inline-block;
        }
        .card {
            border: none;
            border-radius: 12px;
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s, box-shadow 0.3s;
            height: 100%;
        }
        .card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 20px rgba(0, 0, 0, 0.15);
        }
        .card-img-top {
            border-radius: 12px 12px 0 0;
            height: 200px;
            object-fit: cover;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border: none;
            padding: 0.75rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            transition: background-color 0.3s;
        }
        .btn-primary:hover {
            background-color: #0f172a;
        }
        .live-badge {
            background-color: var(--secondary-color);
            color: white;
            padding: 0.25rem 0.75rem;
            border-radius: 20px;
            font-size: 0.875rem;
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0% { opacity: 1; }
            50% { opacity: 0.7; }
            100% { opacity: 1; }
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        .stat-item {
            background: var(--light-bg);
            padding: 1.5rem;
            border-radius: 10px;
            text-align: center;
            border-left: 5px solid var(--primary-color);
        }
        .friendlink .flink {
            display: inline-block;
            background: var(--light-bg);
            color: var(--primary-color);
            padding: 0.75rem 1.5rem;
            margin: 0.5rem;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s;
            border: 2px solid transparent;
        }
        .friendlink .flink:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--accent-color);
        }
        footer {
            background: #0f172a;
            color: white;
            padding: 3rem 0 1.5rem;
        }
        footer a {
            color: #cbd5e1;
            text-decoration: none;
            transition: color 0.3s;
        }
        footer a:hover {
            color: var(--accent-color);
        }
        .social-icons a {
            font-size: 1.5rem;
            margin-right: 1rem;
            color: #94a3b8;
        }
        .social-icons a:hover {
            color: white;
        }
        @media (max-width: 768px) {
            .hero {
                padding: 4rem 0;
            }
            .display-4 {
                font-size: 2.5rem;
            }
        }