:root {
            --primary-color: #1a3a8f;
            --secondary-color: #00a0e9;
            --accent-color: #ff6b35;
            --light-color: #f8f9fa;
            --dark-color: #212529;
            --gray-color: #6c757d;
        }
        body {
            font-family: "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: #333;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .navbar-brand span {
            color: var(--accent-color);
        }
        .hero-section {
            background: linear-gradient(135deg, var(--primary-color) 0%, #2a5bd7 100%);
            color: white;
            padding: 6rem 0;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMTIwMCIgaGVpZ2h0PSI4MDAiIHZpZXdCb3g9IjAgMCAxMjAwIDgwMCIgZmlsbD0ibm9uZSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KPHBhdGggZD0iTTAgMEgxMjAwVjgwMEgwVjBaIiBmaWxsPSIjMUEzQThGIi8+CjxwYXRoIGQ9Ik0wIDQwMEgxMjAwIiBzdHJva2U9IiMwMEEwRjIiIHN0cm9rZS13aWR0aD0iMiIvPgo8cGF0aCBkPSJNNDAwIDBWMTAwIiBzdHJva2U9IiMwMEEwRjIiIHN0cm9rZS13aWR0aD0iMiIvPgo8L3N2Zz4=');
            opacity: 0.1;
        }
        .section-title {
            position: relative;
            padding-bottom: 1rem;
            margin-bottom: 3rem;
            text-align: center;
            font-weight: 700;
            color: var(--primary-color);
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--accent-color);
            border-radius: 2px;
        }
        .card {
            border: none;
            border-radius: 12px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.08);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
        }
        .card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.12);
        }
        .icon-box {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: white;
            font-size: 1.8rem;
        }
        .btn-primary {
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            border: none;
            padding: 0.75rem 2rem;
            border-radius: 30px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(26, 58, 143, 0.2);
        }
        .data-counter {
            font-size: 3rem;
            font-weight: 700;
            color: var(--primary-color);
            line-height: 1;
        }
        .partner-logo {
            filter: grayscale(100%);
            opacity: 0.7;
            transition: all 0.3s ease;
            max-height: 60px;
        }
        .partner-logo:hover {
            filter: grayscale(0);
            opacity: 1;
            transform: scale(1.05);
        }
        footer {
            background: #1a1f36;
            color: #ccc;
        }
        .flink {
            color: #a0aec0;
            text-decoration: none;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: all 0.3s ease;
            display: inline-block;
            margin: 0.25rem;
            background: rgba(255,255,255,0.05);
        }
        .flink:hover {
            color: white;
            background: rgba(255,255,255,0.1);
            transform: translateY(-2px);
        }
        .contact-info li {
            margin-bottom: 1rem;
        }
        .contact-info i {
            width: 24px;
            color: var(--secondary-color);
        }
        .news-card {
            border-left: 4px solid var(--secondary-color);
        }
        .sticky-nav {
            position: sticky;
            top: 0;
            z-index: 1020;
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 4rem 0;
            }
            .data-counter {
                font-size: 2.5rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }