:root {
            --primary-color: #2a5caa;
            --secondary-color: #f8b864;
            --accent-color: #e74c3c;
            --light-color: #f8f9fa;
            --dark-color: #343a40;
            --text-color: #444;
            --border-radius: 8px;
            --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        body {
            font-family: "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            color: var(--text-color);
            line-height: 1.6;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--dark-color);
            margin-bottom: 1rem;
        }
        .section-header {
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-header h2 {
            position: relative;
            display: inline-block;
            padding-bottom: 15px;
            margin-bottom: 0;
        }
        .section-header h2:after {
            content: '';
            position: absolute;
            width: 70px;
            height: 3px;
            background: var(--secondary-color);
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
        }
        .section-header p {
            color: #666;
            max-width: 700px;
            margin: 15px auto 0;
        }
        .navbar {
            padding: 1rem 0;
            background-color: rgba(255, 255, 255, 0.98);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            transition: var(--transition);
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-color);
        }
        .navbar-brand span {
            color: var(--secondary-color);
        }
        .nav-link {
            font-weight: 600;
            margin: 0 10px;
            color: var(--dark-color);
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-color);
        }
        .nav-link:hover:after, .nav-link.active:after {
            content: '';
            position: absolute;
            width: 100%;
            height: 2px;
            background: var(--primary-color);
            bottom: 0;
            left: 0;
        }
        .navbar-toggler {
            border: none;
            padding: 0.5rem;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }
        .hero-section {
            background: linear-gradient(rgba(42, 92, 170, 0.85), rgba(42, 92, 170, 0.9)), url('https://images.unsplash.com/photo-1558618666-fcd25c85cd64?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1470&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 150px 0 100px;
            position: relative;
        }
        .hero-content h1 {
            font-size: 3.2rem;
            color: white;
            margin-bottom: 1.5rem;
            text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
        }
        .hero-content p {
            font-size: 1.2rem;
            margin-bottom: 2rem;
            max-width: 700px;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 12px 30px;
            font-weight: 600;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .btn-primary:hover {
            background-color: #1d4a8a;
            border-color: #1d4a8a;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        .btn-secondary {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            color: #333;
            padding: 12px 30px;
            font-weight: 600;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .btn-secondary:hover {
            background-color: #e6a852;
            border-color: #e6a852;
            color: #333;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        .service-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 30px 25px;
            height: 100%;
            transition: var(--transition);
            box-shadow: var(--box-shadow);
            border: 1px solid #eee;
            text-align: center;
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .service-icon {
            width: 80px;
            height: 80px;
            background: rgba(42, 92, 170, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            color: var(--primary-color);
            font-size: 2rem;
            transition: var(--transition);
        }
        .service-card:hover .service-icon {
            background: var(--primary-color);
            color: white;
        }
        .service-card h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
        }
        .about-section {
            padding: 100px 0;
            background-color: #f9f9f9;
        }
        .about-img {
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--box-shadow);
        }
        .about-img img {
            width: 100%;
            height: auto;
            transition: var(--transition);
        }
        .about-img:hover img {
            transform: scale(1.03);
        }
        .feature-list li {
            margin-bottom: 15px;
            display: flex;
            align-items: flex-start;
        }
        .feature-list i {
            color: var(--secondary-color);
            margin-right: 10px;
            margin-top: 5px;
            flex-shrink: 0;
        }
        .process-section {
            padding: 100px 0;
            background: white;
        }
        .process-step {
            text-align: center;
            padding: 0 20px;
            position: relative;
        }
        .process-step:not(:last-child):after {
            content: '';
            position: absolute;
            width: 70%;
            height: 2px;
            background: #eee;
            top: 40px;
            right: -35%;
            z-index: 1;
        }
        .step-number {
            width: 80px;
            height: 80px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            font-weight: 700;
            margin: 0 auto 25px;
            position: relative;
            z-index: 2;
        }
        .step-content h4 {
            margin-bottom: 10px;
        }
        .team-section {
            padding: 100px 0;
            background-color: #f9f9f9;
        }
        .team-member {
            background: white;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            margin-bottom: 30px;
        }
        .team-member:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        .member-img {
            height: 280px;
            overflow: hidden;
        }
        .member-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .team-member:hover .member-img img {
            transform: scale(1.05);
        }
        .member-info {
            padding: 25px;
        }
        .member-info h4 {
            margin-bottom: 5px;
        }
        .member-position {
            color: var(--primary-color);
            font-weight: 600;
            margin-bottom: 15px;
            display: block;
        }
        .case-section {
            padding: 100px 0;
            background: white;
        }
        .case-card {
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--box-shadow);
            margin-bottom: 30px;
            transition: var(--transition);
            height: 100%;
        }
        .case-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        .case-img {
            height: 220px;
            overflow: hidden;
        }
        .case-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .case-card:hover .case-img img {
            transform: scale(1.05);
        }
        .case-content {
            padding: 25px;
        }
        .news-section {
            padding: 100px 0;
            background-color: #f9f9f9;
        }
        .news-item {
            background: white;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--box-shadow);
            margin-bottom: 30px;
            transition: var(--transition);
            height: 100%;
        }
        .news-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }
        .news-date {
            background: var(--primary-color);
            color: white;
            padding: 10px 15px;
            text-align: center;
            width: 70px;
            float: left;
            margin-right: 20px;
        }
        .news-date .day {
            font-size: 1.8rem;
            font-weight: 700;
            line-height: 1;
        }
        .news-date .month {
            font-size: 0.9rem;
            text-transform: uppercase;
        }
        .news-content {
            padding: 25px;
            overflow: hidden;
        }
        .contact-section {
            padding: 100px 0;
            background: linear-gradient(rgba(42, 92, 170, 0.9), rgba(42, 92, 170, 0.9)), url('https://images.unsplash.com/photo-1558618666-fcd25c85cd64?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1470&q=80');
            background-size: cover;
            background-position: center;
            color: white;
        }
        .contact-section h2 {
            color: white;
        }
        .contact-info {
            background: rgba(255, 255, 255, 0.95);
            border-radius: var(--border-radius);
            padding: 40px;
            color: var(--dark-color);
            height: 100%;
        }
        .contact-item {
            display: flex;
            margin-bottom: 30px;
        }
        .contact-icon {
            width: 50px;
            height: 50px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-right: 20px;
            flex-shrink: 0;
        }
        .contact-details h4 {
            margin-bottom: 5px;
        }
        .contact-form {
            background: white;
            border-radius: var(--border-radius);
            padding: 40px;
            box-shadow: var(--box-shadow);
        }
        .form-control {
            padding: 12px 15px;
            border-radius: var(--border-radius);
            border: 1px solid #ddd;
            margin-bottom: 20px;
            transition: var(--transition);
        }
        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.25rem rgba(42, 92, 170, 0.25);
        }
        .footer {
            background: #1a1a1a;
            color: #bbb;
            padding: 80px 0 0;
        }
        .footer-widget h4 {
            color: white;
            margin-bottom: 25px;
            font-size: 1.3rem;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-widget h4:after {
            content: '';
            position: absolute;
            width: 50px;
            height: 2px;
            background: var(--secondary-color);
            bottom: 0;
            left: 0;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #bbb;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--secondary-color);
            padding-left: 5px;
        }
        .footer-contact li {
            margin-bottom: 15px;
            display: flex;
            align-items: flex-start;
        }
        .footer-contact i {
            color: var(--secondary-color);
            margin-right: 10px;
            margin-top: 5px;
        }
        .friendlinks {
            background: #222;
            padding: 30px 0;
            border-top: 1px solid #333;
        }
        .friendlink-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
        }
        .flink {
            color: #bbb;
            text-decoration: none;
            transition: var(--transition);
            padding: 5px 15px;
            border: 1px solid #444;
            border-radius: 4px;
        }
        .flink:hover {
            color: var(--secondary-color);
            border-color: var(--secondary-color);
        }
        .copyright {
            background: #111;
            padding: 25px 0;
            text-align: center;
            border-top: 1px solid #333;
        }
        @media (max-width: 992px) {
            .hero-content h1 {
                font-size: 2.5rem;
            }
            .process-step:not(:last-child):after {
                display: none;
            }
        }
        @media (max-width: 768px) {
            .hero-content h1 {
                font-size: 2rem;
            }
            .hero-section {
                padding: 120px 0 80px;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }
            .about-section, .process-section, .team-section, .case-section, .news-section, .contact-section {
                padding: 70px 0;
            }
        }
        @media (max-width: 576px) {
            .footer {
                padding: 60px 0 0;
            }
            .footer-widget {
                margin-bottom: 40px;
            }
            .friendlink-container {
                gap: 10px;
            }
            .flink {
                padding: 5px 10px;
                font-size: 0.9rem;
            }
        }
        .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: 1.2rem;
            text-decoration: none;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background: #1d4a8a;
            color: white;
        }