:root {
            --primary-color: #1a3a5f;
            --secondary-color: #e6af2e;
            --accent-color: #2c5aa0;
            --light-color: #f8f9fa;
            --dark-color: #212529;
            --gray-color: #6c757d;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            line-height: 1.7;
            color: var(--dark-color);
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 2.5rem;
            text-align: center;
        }
        .section-title:after {
            content: '';
            position: absolute;
            width: 80px;
            height: 3px;
            background: var(--secondary-color);
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
        }
        .section-title.left:after {
            left: 0;
            transform: none;
        }
        .navbar {
            background-color: rgba(26, 58, 95, 0.95);
            padding: 1rem 0;
            transition: var(--transition);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: white !important;
        }
        .navbar-brand span {
            color: var(--secondary-color);
        }
        .nav-link {
            color: rgba(255, 255, 255, 0.85) !important;
            font-weight: 500;
            padding: 0.5rem 1.2rem !important;
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--secondary-color) !important;
        }
        .nav-link:after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            background: var(--secondary-color);
            bottom: 0;
            left: 50%;
            transition: var(--transition);
        }
        .nav-link:hover:after, .nav-link.active:after {
            width: 70%;
            left: 15%;
        }
        .hero-section {
            background: linear-gradient(rgba(26, 58, 95, 0.85), rgba(26, 58, 95, 0.9)), url('https://images.unsplash.com/photo-1553877522-43269d4ea984?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1770&q=80') no-repeat center center;
            background-size: cover;
            color: white;
            padding: 180px 0 120px;
            text-align: center;
        }
        .hero-section h1 {
            color: white;
            font-size: 3.2rem;
            margin-bottom: 1.5rem;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }
        .hero-section p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 2rem;
            opacity: 0.9;
        }
        .btn-primary-custom {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            color: var(--primary-color);
            padding: 0.8rem 2.2rem;
            font-weight: 600;
            border-radius: 4px;
            transition: var(--transition);
        }
        .btn-primary-custom:hover {
            background-color: #d39e00;
            border-color: #d39e00;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        .feature-card {
            background: white;
            border-radius: 8px;
            padding: 2.5rem 2rem;
            height: 100%;
            transition: var(--transition);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            border-top: 4px solid transparent;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
            border-top-color: var(--secondary-color);
        }
        .feature-icon {
            width: 70px;
            height: 70px;
            background: rgba(230, 175, 46, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: var(--secondary-color);
            font-size: 1.8rem;
        }
        .service-item {
            background: white;
            border-radius: 8px;
            overflow: hidden;
            transition: var(--transition);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            margin-bottom: 2rem;
            height: 100%;
        }
        .service-item:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .service-img {
            height: 220px;
            overflow: hidden;
        }
        .service-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .service-item:hover .service-img img {
            transform: scale(1.05);
        }
        .service-content {
            padding: 1.8rem;
        }
        .stat-item {
            text-align: center;
            padding: 2rem 1rem;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--secondary-color);
            display: block;
            line-height: 1;
            margin-bottom: 0.5rem;
        }
        .stat-text {
            color: var(--primary-color);
            font-weight: 600;
            font-size: 1.1rem;
        }
        .case-study {
            background: white;
            border-radius: 8px;
            overflow: hidden;
            transition: var(--transition);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            height: 100%;
        }
        .case-study:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .case-img {
            height: 240px;
            overflow: hidden;
        }
        .case-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .case-study:hover .case-img img {
            transform: scale(1.05);
        }
        .case-content {
            padding: 1.8rem;
        }
        .team-member {
            text-align: center;
            margin-bottom: 2rem;
        }
        .team-img {
            width: 180px;
            height: 180px;
            border-radius: 50%;
            overflow: hidden;
            margin: 0 auto 1.5rem;
            border: 5px solid white;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .team-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .testimonial-card {
            background: white;
            border-radius: 8px;
            padding: 2rem;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            height: 100%;
            position: relative;
        }
        .testimonial-card:before {
            content: "\201C";
            font-size: 5rem;
            color: rgba(230, 175, 46, 0.2);
            position: absolute;
            top: -20px;
            left: 10px;
            font-family: Georgia, serif;
        }
        .testimonial-text {
            font-style: italic;
            margin-bottom: 1.5rem;
            position: relative;
            z-index: 1;
        }
        .client-info {
            display: flex;
            align-items: center;
        }
        .client-img {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            overflow: hidden;
            margin-right: 1rem;
        }
        .client-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .footer {
            background-color: var(--primary-color);
            color: rgba(255, 255, 255, 0.8);
            padding: 4rem 0 0;
        }
        .footer h5 {
            color: white;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 10px;
        }
        .footer h5:after {
            content: '';
            position: absolute;
            width: 50px;
            height: 2px;
            background: var(--secondary-color);
            bottom: 0;
            left: 0;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--secondary-color);
            padding-left: 5px;
        }
        .contact-info li {
            margin-bottom: 1rem;
            display: flex;
            align-items: flex-start;
        }
        .contact-info i {
            color: var(--secondary-color);
            margin-right: 10px;
            margin-top: 5px;
        }
        .social-links {
            display: flex;
            margin-top: 1.5rem;
        }
        .social-links a {
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            margin-right: 10px;
            transition: var(--transition);
        }
        .social-links a:hover {
            background: var(--secondary-color);
            color: var(--primary-color);
            transform: translateY(-5px);
        }
        .copyright {
            background-color: rgba(0, 0, 0, 0.2);
            padding: 1.5rem 0;
            margin-top: 4rem;
            text-align: center;
            font-size: 0.9rem;
        }
        .friendlink {
            background-color: #f8f9fa;
            padding: 4rem 0;
        }
        .flink {
            display: inline-block;
            background: white;
            padding: 0.8rem 1.5rem;
            margin: 0.5rem;
            border-radius: 4px;
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
            border: 1px solid #eee;
        }
        .flink:hover {
            background: var(--secondary-color);
            color: var(--primary-color);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        .breadcrumb {
            background-color: transparent;
            padding: 1rem 0;
        }
        .breadcrumb-item a {
            color: var(--primary-color);
            text-decoration: none;
        }
        .breadcrumb-item.active {
            color: var(--gray-color);
        }
        .fixed-contact {
            position: fixed;
            right: 30px;
            bottom: 30px;
            z-index: 1000;
        }
        .contact-btn {
            width: 60px;
            height: 60px;
            background: var(--secondary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-color);
            font-size: 1.5rem;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
            transition: var(--transition);
            text-decoration: none;
        }
        .contact-btn:hover {
            transform: scale(1.1);
            color: var(--primary-color);
        }
        .back-to-top {
            position: fixed;
            right: 30px;
            bottom: 100px;
            width: 50px;
            height: 50px;
            background: var(--primary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.2rem;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            transition: var(--transition);
            opacity: 0;
            visibility: hidden;
            z-index: 999;
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background: var(--accent-color);
            color: white;
        }
        @media (max-width: 992px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .hero-section {
                padding: 150px 0 100px;
            }
            .navbar-collapse {
                background-color: rgba(26, 58, 95, 0.98);
                padding: 1rem;
                border-radius: 8px;
                margin-top: 10px;
            }
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .stat-number {
                font-size: 2.5rem;
            }
        }