:root {
            --primary-color: #0d6efd;
            --secondary-color: #1e3a8a;
            --accent-color: #10b981;
            --dark-color: #1e293b;
            --light-color: #f8fafc;
            --gray-color: #64748b;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            line-height: 1.7;
            color: #333;
            overflow-x: hidden;
        }
        .text-justify {
            text-align: justify;
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
            padding: 1rem 0;
            transition: all 0.3s ease;
        }
        .navbar.scrolled {
            padding: 0.7rem 0;
            background-color: rgba(255, 255, 255, 0.98);
        }
        .navbar-brand {
            font-weight: 700;
            color: var(--secondary-color);
            font-size: 1.5rem;
        }
        .navbar-brand span {
            color: var(--primary-color);
        }
        .nav-link {
            color: var(--dark-color) !important;
            font-weight: 500;
            margin: 0 0.5rem;
            position: relative;
            transition: all 0.3s ease;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-color) !important;
        }
        .nav-link:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            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(13, 110, 253, 0.85) 0%, rgba(30, 58, 138, 0.9) 100%), url('https://images.unsplash.com/photo-1558494949-ef010cbdcc31?ixlib=rb-4.0.3&auto=format&fit=crop&w=1350&q=80') no-repeat center center;
            background-size: cover;
            color: white;
            padding: 10rem 0 6rem;
            margin-top: 76px;
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 700;
            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;
            }
        }
        .hero-subtitle {
            font-size: 1.25rem;
            font-weight: 300;
            margin-bottom: 2rem;
            max-width: 800px;
        }
        .service-card {
            border-radius: 12px;
            overflow: hidden;
            border: none;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: all 0.4s ease;
            height: 100%;
            background-color: white;
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(13, 110, 253, 0.15);
        }
        .service-icon {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            background-color: rgba(13, 110, 253, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: var(--primary-color);
            font-size: 1.8rem;
        }
        .hover-lift {
            transition: transform 0.3s ease;
        }
        .hover-lift:hover {
            transform: translateY(-5px);
        }
        .section-title {
            position: relative;
            padding-bottom: 1rem;
            margin-bottom: 3rem;
            font-weight: 700;
            color: var(--dark-color);
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 60px;
            height: 4px;
            background-color: var(--primary-color);
            border-radius: 2px;
        }
        .section-title.center-title:after {
            left: 50%;
            transform: translateX(-50%);
        }
        .about-section {
            background-color: var(--light-color);
            padding: 6rem 0;
        }
        .about-img {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
        }
        .services-section {
            padding: 6rem 0;
        }
        .stats-section {
            background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
            color: white;
            padding: 5rem 0;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .portfolio-section {
            padding: 6rem 0;
            background-color: #f9fafb;
        }
        .portfolio-item {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
            transition: all 0.4s ease;
            height: 100%;
            background-color: white;
        }
        .portfolio-item:hover {
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
        }
        .portfolio-img {
            height: 220px;
            object-fit: cover;
            width: 100%;
        }
        .news-section {
            padding: 6rem 0;
        }
        .news-card {
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid #e5e7eb;
            transition: all 0.3s ease;
            height: 100%;
            background-color: white;
        }
        .news-card:hover {
            border-color: var(--primary-color);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
        }
        .news-date {
            color: var(--gray-color);
            font-size: 0.9rem;
            margin-bottom: 0.5rem;
        }
        .contact-section {
            padding: 6rem 0;
            background-color: var(--light-color);
        }
        .contact-form .form-control {
            border-radius: 8px;
            padding: 0.75rem 1rem;
            border: 1px solid #d1d5db;
            transition: all 0.3s ease;
        }
        .contact-form .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
        }
        .contact-info-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 1.5rem;
        }
        .contact-info-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: rgba(13, 110, 253, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-color);
            font-size: 1.3rem;
            flex-shrink: 0;
            margin-right: 1rem;
        }
        .friendlink {
            padding: 4rem 0;
            background-color: #f1f5f9;
        }
        .flink {
            display: inline-block;
            padding: 0.5rem 1.5rem;
            background-color: white;
            border-radius: 50px;
            color: var(--dark-color);
            text-decoration: none;
            margin: 0.5rem;
            border: 1px solid #e2e8f0;
            transition: all 0.3s ease;
            font-weight: 500;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
            transform: translateY(-3px);
        }
        footer {
            background-color: var(--dark-color);
            color: #cbd5e1;
            padding: 4rem 0 2rem;
        }
        .footer-links a {
            color: #cbd5e1;
            text-decoration: none;
            transition: color 0.3s ease;
            display: block;
            margin-bottom: 0.5rem;
        }
        .footer-links a:hover {
            color: white;
        }
        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 2rem;
            margin-top: 3rem;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 6rem 0 4rem;
                text-align: center;
            }
            .section-title {
                text-align: center;
            }
            .section-title:after {
                left: 50%;
                transform: translateX(-50%);
            }
            .stat-number {
                font-size: 2.5rem;
            }
        }
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fadeInUp {
            animation: fadeInUp 0.8s ease forwards;
        }