:root {
            --primary-color: #1a5fb4;
            --secondary-color: #e63946;
            --accent-color: #2a9d8f;
            --dark-color: #1d3557;
            --light-color: #f1faee;
            --gray-color: #8d99ae;
        }
        body {
            font-family: 'Microsoft YaHei', 'Segoe UI', sans-serif;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        .hero-section {
            background: linear-gradient(135deg, rgba(26, 95, 180, 0.9) 0%, rgba(29, 53, 87, 0.9) 100%), url('https://images.unsplash.com/photo-1551958219-acbc608c6377?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') no-repeat center center/cover;
            color: white;
            padding: 120px 0 80px;
            position: relative;
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.98);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            padding-top: 15px;
            padding-bottom: 15px;
            transition: all 0.3s ease;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--dark-color) !important;
        }
        .nav-link {
            font-weight: 500;
            color: var(--dark-color) !important;
            margin: 0 8px;
            padding: 8px 16px !important;
            border-radius: 4px;
            transition: all 0.3s;
        }
        .nav-link:hover, .nav-link.active {
            background-color: var(--primary-color);
            color: white !important;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 50px;
            text-align: center;
            font-weight: 700;
            color: var(--dark-color);
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--primary-color);
            border-radius: 2px;
        }
        .card-hover {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: none;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.08);
            height: 100%;
        }
        .card-hover:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        .icon-box {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: white;
            font-size: 1.8rem;
        }
        .feature-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        .stats-counter {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--primary-color);
            line-height: 1;
        }
        .btn-primary-custom {
            background: linear-gradient(to right, var(--primary-color), var(--accent-color));
            border: none;
            color: white;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-primary-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(26, 95, 180, 0.3);
            color: white;
        }
        .footer {
            background-color: var(--dark-color);
            color: #ddd;
            padding-top: 70px;
            padding-bottom: 30px;
        }
        .footer a {
            color: #ddd;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer a:hover {
            color: white;
            text-decoration: underline;
        }
        .copyright {
            background-color: rgba(0, 0, 0, 0.2);
            padding: 20px 0;
            margin-top: 50px;
        }
        .flink {
            background-color: rgba(255, 255, 255, 0.1);
            padding: 12px 24px;
            border-radius: 8px;
            display: inline-block;
            margin: 5px 8px;
            transition: all 0.3s;
            color: #ddd;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
            transform: translateY(-3px);
            text-decoration: none;
        }
        .news-card {
            border-left: 4px solid var(--primary-color);
        }
        .carousel-indicators button {
            width: 12px !important;
            height: 12px !important;
            border-radius: 50%;
            margin: 0 5px;
        }
        .accordion-button:not(.collapsed) {
            background-color: rgba(26, 95, 180, 0.1);
            color: var(--primary-color);
            font-weight: 600;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 100px 0 60px;
            }
            .navbar-brand {
                font-size: 1.5rem;
            }
            .stats-counter {
                font-size: 2.2rem;
            }
        }