:root {
            --primary-color: #0a3d62;
            --secondary-color: #f9c71d;
            --accent-color: #2e86de;
            --light-color: #f8f9fa;
            --dark-color: #222f3e;
        }
        body {
            font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            color: #333;
            overflow-x: hidden;
        }
        .hero-section {
            background: linear-gradient(rgba(10, 61, 98, 0.85), rgba(10, 61, 98, 0.9)), url('https://images.unsplash.com/photo-1542744095-fcf48d80b0fd?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
            color: white;
            padding: 180px 0 120px;
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.98);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            padding: 15px 0;
        }
        .navbar.scrolled {
            padding: 10px 0;
            background-color: rgba(255, 255, 255, 0.98);
        }
        .nav-link {
            color: var(--primary-color) !important;
            font-weight: 500;
            margin: 0 8px;
            transition: all 0.3s ease;
            position: relative;
        }
        .nav-link:hover {
            color: var(--accent-color) !important;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            background: var(--secondary-color);
            left: 0;
            bottom: -5px;
            transition: width 0.3s ease;
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 12px 28px;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            background-color: var(--accent-color);
            border-color: var(--accent-color);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        .section-title {
            position: relative;
            padding-bottom: 20px;
            margin-bottom: 50px;
            color: var(--primary-color);
        }
        .section-title::after {
            content: '';
            position: absolute;
            width: 80px;
            height: 4px;
            background: var(--secondary-color);
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
        }
        .service-card {
            background: white;
            border-radius: 12px;
            padding: 40px 30px;
            height: 100%;
            transition: all 0.4s ease;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.05);
            border: 1px solid rgba(0, 0, 0, 0.05);
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
            border-color: var(--secondary-color);
        }
        .service-icon {
            width: 80px;
            height: 80px;
            background: rgba(10, 61, 98, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 25px;
            color: var(--primary-color);
            font-size: 32px;
        }
        .project-item {
            border-radius: 12px;
            overflow: hidden;
            position: relative;
            margin-bottom: 30px;
            height: 300px;
        }
        .project-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(to top, rgba(10, 61, 98, 0.85), transparent);
            display: flex;
            align-items: flex-end;
            padding: 30px;
            opacity: 0;
            transition: opacity 0.4s ease;
        }
        .project-item:hover .project-overlay {
            opacity: 1;
        }
        .news-card {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
            height: 100%;
        }
        .news-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 25px rgba(0, 0, 0, 0.1);
        }
        .news-date {
            position: absolute;
            top: 15px;
            left: 15px;
            background: var(--primary-color);
            color: white;
            padding: 8px 15px;
            border-radius: 30px;
            font-size: 14px;
        }
        .footer {
            background-color: var(--dark-color);
            color: #ddd;
            padding-top: 70px;
        }
        .footer-links a {
            color: #bbb;
            text-decoration: none;
            transition: color 0.3s ease;
            display: block;
            margin-bottom: 10px;
        }
        .footer-links a:hover {
            color: var(--secondary-color);
            padding-left: 5px;
        }
        .contact-info i {
            width: 30px;
            color: var(--secondary-color);
        }
        .copyright {
            background-color: rgba(0, 0, 0, 0.2);
            padding: 20px 0;
            margin-top: 50px;
        }
        .flink {
            display: inline-block;
            background: rgba(255, 255, 255, 0.1);
            color: #ddd;
            padding: 10px 20px;
            margin: 0 10px 15px 0;
            border-radius: 6px;
            text-decoration: none;
            transition: all 0.3s ease;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .flink:hover {
            background: rgba(255, 255, 255, 0.2);
            color: var(--secondary-color);
            border-color: var(--secondary-color);
            transform: translateY(-3px);
        }
        .stats-number {
            font-size: 48px;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 5px;
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            cursor: pointer;
            z-index: 1000;
            opacity: 0;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        }
        .back-to-top.visible {
            opacity: 1;
        }
        .back-to-top:hover {
            background: var(--accent-color);
            transform: translateY(-5px);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 120px 0 80px;
            }
            .section-title {
                font-size: 28px;
            }
            .stats-number {
                font-size: 36px;
            }
        }
        .company-history {
            position: relative;
            padding-left: 30px;
            border-left: 3px solid var(--secondary-color);
            margin-bottom: 40px;
        }
        .history-year {
            position: absolute;
            left: -40px;
            top: 0;
            background: var(--primary-color);
            color: white;
            width: 80px;
            height: 80px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
        }
        .team-member {
            text-align: center;
            margin-bottom: 40px;
        }
        .team-img {
            width: 180px;
            height: 180px;
            border-radius: 50%;
            object-fit: cover;
            margin-bottom: 20px;
            border: 5px solid white;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
        }