:root {
            --primary-color: #1a5f7a;
            --secondary-color: #57a6c2;
            --accent-color: #ff7e36;
            --light-color: #f8f9fa;
            --dark-color: #2c3e50;
            --gray-color: #6c757d;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: #333;
            line-height: 1.7;
        }
        .navbar-brand {
            font-weight: 700;
            color: var(--primary-color) !important;
        }
        .hero-section {
            background: linear-gradient(rgba(26, 95, 122, 0.85), rgba(26, 95, 122, 0.9)), url('https://images.unsplash.com/photo-1487956382158-bb926046304a?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat;
            color: white;
            padding: 120px 0;
        }
        .section-title {
            position: relative;
            padding-bottom: 20px;
            margin-bottom: 50px;
            color: var(--dark-color);
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 4px;
            background: var(--accent-color);
        }
        .service-card {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: none;
            height: 100%;
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .service-icon {
            width: 80px;
            height: 80px;
            background: var(--primary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            color: white;
            font-size: 32px;
        }
        .stat-card {
            text-align: center;
            padding: 30px 20px;
            background: var(--light-color);
            border-radius: 10px;
            transition: all 0.3s;
        }
        .stat-card:hover {
            background: white;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--primary-color);
            line-height: 1;
        }
        .project-card {
            overflow: hidden;
            border-radius: 10px;
            margin-bottom: 30px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .project-card img {
            transition: transform 0.5s ease;
        }
        .project-card:hover img {
            transform: scale(1.05);
        }
        .news-card {
            border-left: 4px solid var(--secondary-color);
            padding-left: 20px;
            margin-bottom: 30px;
            transition: all 0.3s;
        }
        .news-card:hover {
            border-left-color: var(--accent-color);
            padding-left: 25px;
        }
        .contact-info {
            background: var(--light-color);
            padding: 40px;
            border-radius: 10px;
            height: 100%;
        }
        .contact-info i {
            color: var(--primary-color);
            margin-right: 15px;
        }
        .form-control:focus {
            border-color: var(--secondary-color);
            box-shadow: 0 0 0 0.25rem rgba(87, 166, 194, 0.25);
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 12px 30px;
            font-weight: 600;
        }
        .btn-primary:hover {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
        }
        .btn-outline-primary {
            color: var(--primary-color);
            border-color: var(--primary-color);
        }
        .btn-outline-primary:hover {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
        }
        .footer {
            background: var(--dark-color);
            color: #ddd;
            padding: 70px 0 30px;
        }
        .footer a {
            color: #ddd;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer a:hover {
            color: white;
        }
        .flink {
            display: inline-block;
            padding: 8px 15px;
            background: rgba(255,255,255,0.1);
            border-radius: 5px;
            margin: 5px;
            transition: all 0.3s;
        }
        .flink:hover {
            background: var(--secondary-color);
            transform: translateY(-3px);
        }
        .map-container {
            height: 400px;
            border-radius: 10px;
            overflow: hidden;
        }
        .breadcrumb {
            background-color: transparent;
            padding: 0;
        }
        .sticky-nav {
            position: sticky;
            top: 0;
            z-index: 1020;
            box-shadow: 0 2px 15px rgba(0,0,0,0.1);
            background: white;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 80px 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .contact-info {
                padding: 25px;
                margin-bottom: 30px;
            }
            .stat-number {
                font-size: 2.5rem;
            }
        }