:root {
            --primary-color: #0056b3;
            --secondary-color: #28a745;
            --accent-color: #ffc107;
            --dark-color: #343a40;
            --light-color: #f8f9fa;
            --gray-color: #6c757d;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            line-height: 1.8;
            color: #333;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5 {
            font-weight: 700;
            color: var(--dark-color);
            margin-bottom: 1rem;
        }
        .section-padding {
            padding: 80px 0;
        }
        .section-title {
            position: relative;
            margin-bottom: 60px;
            text-align: center;
        }
        .section-title h2 {
            display: inline-block;
            padding-bottom: 15px;
            position: relative;
        }
        .section-title h2:after {
            content: '';
            position: absolute;
            width: 70px;
            height: 4px;
            background: var(--primary-color);
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
        }
        .section-title p {
            color: var(--gray-color);
            max-width: 700px;
            margin: 20px auto 0;
        }
        .navbar {
            padding: 15px 0;
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--primary-color);
        }
        .navbar-brand span {
            color: var(--secondary-color);
        }
        .navbar-nav .nav-link {
            font-weight: 600;
            color: var(--dark-color);
            padding: 10px 15px;
            margin: 0 5px;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
            color: white;
            background-color: var(--primary-color);
        }
        .hero {
            background: linear-gradient(rgba(0, 84, 179, 0.85), rgba(0, 84, 179, 0.9)), url('https://images.unsplash.com/photo-1601584115197-04ecc0da31d7?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80') no-repeat center center;
            background-size: cover;
            color: white;
            padding: 180px 0 120px;
            position: relative;
        }
        .hero h1 {
            font-size: 3.5rem;
            font-weight: 800;
            color: white;
            margin-bottom: 25px;
            text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.2);
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 700px;
            margin-bottom: 35px;
            opacity: 0.95;
        }
        .btn-primary-custom {
            background-color: var(--accent-color);
            border: none;
            color: var(--dark-color);
            padding: 12px 35px;
            font-weight: 700;
            border-radius: 50px;
            transition: all 0.3s ease;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .btn-primary-custom:hover {
            background-color: white;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        .service-card {
            background: white;
            border-radius: 10px;
            padding: 40px 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: all 0.4s ease;
            height: 100%;
            border-top: 5px solid var(--primary-color);
            position: relative;
            overflow: hidden;
        }
        .service-card:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: var(--primary-color);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.5s ease;
        }
        .service-card:hover:before {
            transform: scaleX(1);
        }
        .service-card:hover {
            transform: translateY(-15px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
        }
        .service-icon {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 25px;
            display: inline-block;
        }
        .about-section {
            background-color: var(--light-color);
        }
        .about-img {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        }
        .about-img img {
            transition: transform 0.5s ease;
        }
        .about-img:hover img {
            transform: scale(1.05);
        }
        .stats-section {
            background: linear-gradient(rgba(40, 167, 69, 0.9), rgba(40, 167, 69, 0.95)), url('https://images.unsplash.com/photo-1586528116311-ad8dd3c8310d?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80') no-repeat center center;
            background-size: cover;
            color: white;
        }
        .stat-item {
            text-align: center;
            padding: 30px 20px;
        }
        .stat-number {
            font-size: 3.5rem;
            font-weight: 800;
            color: white;
            margin-bottom: 10px;
        }
        .stat-text {
            font-size: 1.2rem;
            opacity: 0.9;
        }
        .case-item {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: all 0.4s ease;
            margin-bottom: 30px;
            background: white;
        }
        .case-item:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
        }
        .case-img {
            height: 250px;
            overflow: hidden;
        }
        .case-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .case-item:hover .case-img img {
            transform: scale(1.05);
        }
        .case-content {
            padding: 25px;
        }
        .news-card {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: all 0.4s ease;
            height: 100%;
            background: white;
        }
        .news-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
        }
        .news-date {
            background-color: var(--primary-color);
            color: white;
            padding: 12px 20px;
            display: inline-block;
            border-radius: 0 0 10px 0;
            font-weight: 600;
        }
        .contact-info-item {
            background: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            margin-bottom: 30px;
            transition: all 0.3s ease;
            text-align: center;
        }
        .contact-info-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
        }
        .contact-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        .friendlink {
            background-color: var(--light-color);
            padding: 60px 0;
        }
        .flink {
            display: inline-block;
            padding: 12px 25px;
            background: white;
            border-radius: 8px;
            margin: 10px;
            color: var(--dark-color);
            font-weight: 600;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
            text-decoration: none;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            text-decoration: none;
        }
        .footer {
            background-color: var(--dark-color);
            color: white;
            padding: 80px 0 30px;
        }
        .footer h5 {
            color: white;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 15px;
        }
        .footer h5:after {
            content: '';
            position: absolute;
            width: 50px;
            height: 3px;
            background: var(--accent-color);
            bottom: 0;
            left: 0;
        }
        .footer-links a {
            color: #aaa;
            display: block;
            margin-bottom: 12px;
            transition: all 0.3s ease;
            text-decoration: none;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 30px;
            margin-top: 50px;
            text-align: center;
            color: #aaa;
            font-size: 0.9rem;
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background-color: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            text-decoration: none;
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background-color: var(--secondary-color);
            color: white;
            transform: translateY(-5px);
        }
        @media (max-width: 992px) {
            .hero h1 {
                font-size: 2.8rem;
            }
            .section-padding {
                padding: 60px 0;
            }
            .navbar-nav .nav-link {
                margin: 5px 0;
            }
        }
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.3rem;
            }
            .hero {
                padding: 150px 0 100px;
            }
            .stat-number {
                font-size: 2.8rem;
            }
            .section-title h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 576px) {
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .section-padding {
                padding: 50px 0;
            }
        }