:root {
            --primary-color: #0056b3;
            --secondary-color: #17a2b8;
            --accent-color: #28a745;
            --dark-color: #343a40;
            --light-color: #f8f9fa;
        }
        body {
            font-family: 'Microsoft YaHei', 'Segoe UI', sans-serif;
            line-height: 1.6;
            color: #333;
        }
        .hero-section {
            background: linear-gradient(rgba(0, 84, 179, 0.85), rgba(0, 84, 179, 0.9)), url('https://images.unsplash.com/photo-1611974789855-9c2a0a7236a3?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 120px 0;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 40px;
        }
        .section-title:after {
            content: '';
            position: absolute;
            width: 80px;
            height: 3px;
            background: var(--primary-color);
            bottom: 0;
            left: 0;
        }
        .section-title.text-center:after {
            left: 50%;
            transform: translateX(-50%);
        }
        .feature-card {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
            border: none;
            border-radius: 10px;
            overflow: hidden;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .feature-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        .data-card {
            border-left: 5px solid var(--primary-color);
            background: #f8f9fa;
            padding: 25px;
            height: 100%;
        }
        .team-member {
            overflow: hidden;
            border-radius: 10px;
            transition: transform 0.3s ease;
        }
        .team-member:hover {
            transform: scale(1.03);
        }
        .team-img {
            height: 250px;
            object-fit: cover;
            width: 100%;
        }
        .news-card {
            transition: transform 0.3s ease;
            height: 100%;
        }
        .news-card:hover {
            transform: translateY(-5px);
        }
        .news-img {
            height: 200px;
            object-fit: cover;
            width: 100%;
        }
        .contact-info {
            background: var(--light-color);
            padding: 30px;
            border-radius: 10px;
            height: 100%;
        }
        .contact-icon {
            font-size: 1.5rem;
            color: var(--primary-color);
            width: 50px;
            height: 50px;
            line-height: 50px;
            text-align: center;
            background: rgba(0, 86, 179, 0.1);
            border-radius: 50%;
        }
        .footer {
            background: var(--dark-color);
            color: white;
        }
        .flink {
            display: inline-block;
            padding: 8px 20px;
            margin: 5px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 5px;
            color: #ddd;
            transition: all 0.3s ease;
            text-decoration: none;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-3px);
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 10px 30px;
            border-radius: 5px;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            background-color: #004494;
            border-color: #004494;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
        }
        .navbar-brand span {
            color: var(--primary-color);
        }
        .chart-container {
            background: white;
            border-radius: 10px;
            padding: 20px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary-color);
        }
        .accordion-button:not(.collapsed) {
            background-color: rgba(0, 86, 179, 0.1);
            color: var(--primary-color);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 80px 0;
            }
            .stat-number {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }