:root {
            --primary-color: #1a365d;
            --secondary-color: #0ea5e9;
            --accent-color: #10b981;
            --light-color: #f8fafc;
            --dark-color: #1e293b;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: #333;
            line-height: 1.6;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
            color: var(--primary-color);
        }
        .hero-section {
            background: linear-gradient(rgba(26, 54, 93, 0.9), rgba(14, 165, 233, 0.8)), url('https://images.unsplash.com/photo-1611974789855-9c2a0a7236a3?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
            color: white;
            padding: 120px 0;
        }
        .service-card {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: none;
            border-radius: 12px;
            overflow: hidden;
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
        }
        .icon-box {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
        }
        .team-img {
            width: 180px;
            height: 180px;
            object-fit: cover;
            border: 5px solid white;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--primary-color);
        }
        .flink {
            display: inline-block;
            padding: 8px 20px;
            margin: 5px;
            background: var(--light-color);
            border-radius: 6px;
            color: var(--dark-color);
            text-decoration: none;
            transition: all 0.3s ease;
            border: 1px solid #e2e8f0;
        }
        .flink:hover {
            background: var(--secondary-color);
            color: white;
            transform: translateY(-2px);
            border-color: var(--secondary-color);
        }
        .contact-info-box {
            background: var(--light-color);
            border-radius: 12px;
            padding: 30px;
            height: 100%;
            transition: transform 0.3s ease;
        }
        .contact-info-box:hover {
            transform: translateY(-5px);
        }
        footer {
            background: var(--primary-color);
            color: white;
        }
        .footer-links a {
            color: #cbd5e1;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer-links a:hover {
            color: var(--secondary-color);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: var(--secondary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0;
            transition: opacity 0.3s ease;
            z-index: 1000;
        }
        .back-to-top.show {
            opacity: 1;
        }
        .article-content {
            text-align: justify;
            line-height: 1.8;
        }
        .article-content h3 {
            margin-top: 2rem;
            margin-bottom: 1rem;
            color: var(--primary-color);
        }
        .article-content p {
            margin-bottom: 1.5rem;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 80px 0;
            }
            .stat-number {
                font-size: 2rem;
            }
            .team-img {
                width: 140px;
                height: 140px;
            }
        }