:root {
            --primary-color: #1a56db;
            --secondary-color: #046c4e;
            --accent-color: #f59e0b;
            --dark-color: #111827;
            --light-color: #f9fafb;
            --gray-color: #6b7280;
        }
        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--dark-color);
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.98);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            padding: 1rem 0;
            transition: all 0.3s ease;
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .nav-link {
            font-weight: 600;
            margin: 0 0.5rem;
            color: var(--dark-color) !important;
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-color) !important;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--primary-color);
            transition: width 0.3s ease;
        }
        .nav-link:hover::after, .nav-link.active::after {
            width: 100%;
        }
        .hero-section {
            background: linear-gradient(135deg, rgba(26, 86, 219, 0.9) 0%, rgba(37, 99, 235, 0.8) 100%), url('https://images.unsplash.com/photo-1499750310107-5fef28a66643?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 8rem 0 6rem;
            position: relative;
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 0.8rem 2.2rem;
            font-weight: 600;
            border-radius: 8px;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            background-color: #1e40af;
            border-color: #1e40af;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(26, 86, 219, 0.2);
        }
        .btn-outline-light:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(255, 255, 255, 0.1);
        }
        .section-title {
            position: relative;
            margin-bottom: 3rem;
            text-align: center;
        }
        .section-title h2 {
            display: inline-block;
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }
        .section-title .underline {
            height: 5px;
            width: 80px;
            background: linear-gradient(to right, var(--primary-color), var(--accent-color));
            margin: 0 auto 1.5rem;
            border-radius: 5px;
        }
        .feature-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--primary-color), #3b82f6);
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: white;
            font-size: 2rem;
            transition: all 0.3s ease;
        }
        .feature-card:hover .feature-icon {
            transform: rotateY(180deg) scale(1.1);
        }
        .feature-card {
            border: none;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: all 0.4s ease;
            height: 100%;
            overflow: hidden;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
        }
        .card-title {
            font-weight: 700;
            color: var(--dark-color);
            margin-bottom: 1rem;
        }
        .service-card {
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: all 0.4s ease;
            height: 100%;
            border: none;
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
        }
        .service-card img {
            height: 220px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .service-card:hover img {
            transform: scale(1.05);
        }
        .badge-custom {
            background-color: rgba(26, 86, 219, 0.1);
            color: var(--primary-color);
            font-weight: 600;
            padding: 0.5rem 1.2rem;
            border-radius: 50px;
        }
        .project-card {
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: all 0.4s ease;
            border: none;
        }
        .project-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
        }
        .news-card {
            border-left: 5px solid var(--primary-color);
            border-radius: 8px;
            transition: all 0.3s ease;
            height: 100%;
        }
        .news-card:hover {
            border-left-color: var(--accent-color);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
            transform: translateX(5px);
        }
        .news-date {
            color: var(--gray-color);
            font-size: 0.9rem;
        }
        .team-member {
            text-align: center;
            margin-bottom: 2rem;
        }
        .team-img {
            width: 180px;
            height: 180px;
            border-radius: 50%;
            object-fit: cover;
            border: 5px solid white;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            margin-bottom: 1.5rem;
            transition: all 0.3s ease;
        }
        .team-member:hover .team-img {
            transform: scale(1.05);
        }
        .contact-info-box {
            background-color: white;
            border-radius: 15px;
            padding: 2rem;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            height: 100%;
            transition: all 0.3s ease;
            border-top: 5px solid var(--primary-color);
        }
        .contact-info-box:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
        }
        .contact-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, var(--primary-color), #3b82f6);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
        }
        .flink {
            display: inline-block;
            background-color: white;
            padding: 0.8rem 1.8rem;
            border-radius: 10px;
            margin: 0.5rem;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
            color: var(--dark-color);
            font-weight: 500;
            text-decoration: none;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-5px);
            text-decoration: none;
        }
        .friendlink {
            background-color: #f8fafc;
            padding: 4rem 0;
        }
        footer {
            background-color: var(--dark-color);
            color: #d1d5db;
            padding: 4rem 0 2rem;
        }
        footer h5 {
            color: white;
            margin-bottom: 1.5rem;
            font-weight: 700;
        }
        footer a {
            color: #d1d5db;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        footer a:hover {
            color: white;
            text-decoration: underline;
        }
        .footer-bottom {
            border-top: 1px solid #374151;
            padding-top: 2rem;
            margin-top: 3rem;
            text-align: center;
            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: 1.2rem;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            box-shadow: 0 5px 15px rgba(26, 86, 219, 0.3);
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background-color: #1e40af;
            transform: translateY(-5px);
        }
        .stats-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary-color);
            line-height: 1;
        }
        .stats-label {
            font-size: 1rem;
            color: var(--gray-color);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-top: 0.5rem;
        }
        .stats-box {
            text-align: center;
            padding: 2rem;
            background-color: white;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }
        .stats-box:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
        }
        .timeline {
            position: relative;
            padding-left: 30px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(to bottom, var(--primary-color), var(--accent-color));
        }
        .timeline-item {
            position: relative;
            margin-bottom: 2rem;
            padding-left: 30px;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -36px;
            top: 5px;
            width: 15px;
            height: 15px;
            border-radius: 50%;
            background-color: var(--primary-color);
            border: 3px solid white;
            box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.2);
        }
        .form-control, .form-select {
            border-radius: 8px;
            padding: 0.8rem 1rem;
            border: 1px solid #d1d5db;
            transition: all 0.3s ease;
        }
        .form-control:focus, .form-select:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
        }