:root {
            --primary-color: #0d6efd;
            --secondary-color: #6c757d;
            --accent-color: #ffc107;
            --light-color: #f8f9fa;
            --dark-color: #212529;
        }
        body {
            font-family: 'Helvetica Neue', 'Microsoft YaHei', sans-serif;
            line-height: 1.8;
            color: var(--dark-color);
            overflow-x: hidden;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
        }
        .hero-section {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1542744095-fcf48d80b0fd?ixlib=rb-4.0.3&auto=format&fit=crop&w=1600&q=80') center/cover no-repeat;
            color: white;
            padding: 10rem 0;
            text-align: center;
        }
        .section-title {
            position: relative;
            margin-bottom: 3rem;
            padding-bottom: 1rem;
            text-align: center;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--accent-color);
        }
        .service-card {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: none;
            border-radius: 12px;
            overflow: hidden;
            height: 100%;
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .service-icon {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
        }
        .portfolio-item {
            position: relative;
            overflow: hidden;
            border-radius: 10px;
            margin-bottom: 2rem;
        }
        .portfolio-img {
            transition: transform 0.5s ease;
            width: 100%;
            height: 280px;
            object-fit: cover;
        }
        .portfolio-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(0,0,0,0.7);
            color: white;
            padding: 1.5rem;
            transform: translateY(100%);
            transition: transform 0.5s ease;
        }
        .portfolio-item:hover .portfolio-overlay {
            transform: translateY(0);
        }
        .portfolio-item:hover .portfolio-img {
            transform: scale(1.05);
        }
        .testimonial-card {
            background: var(--light-color);
            border-left: 5px solid var(--accent-color);
            padding: 2rem;
            border-radius: 0 10px 10px 0;
            margin: 1rem 0;
        }
        .friendlink {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 2rem;
            padding: 2rem 0;
        }
        .flink {
            color: var(--secondary-color);
            text-decoration: none;
            padding: 0.75rem 1.5rem;
            border: 1px solid #dee2e6;
            border-radius: 50px;
            transition: all 0.3s ease;
            background: white;
        }
        .flink:hover {
            color: var(--primary-color);
            border-color: var(--primary-color);
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        footer {
            background: var(--dark-color);
            color: white;
            padding-top: 3rem;
        }
        .footer-link {
            color: #adb5bd;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer-link:hover {
            color: var(--accent-color);
        }
        .contact-info li {
            margin-bottom: 1rem;
        }
        .contact-info i {
            color: var(--accent-color);
            margin-right: 10px;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 0.75rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            background-color: #0b5ed7;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(11, 94, 215, 0.3);
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--primary-color);
            display: block;
        }
        .stat-label {
            font-size: 1.2rem;
            color: var(--secondary-color);
        }
        .news-card {
            border: none;
            border-radius: 12px;
            overflow: hidden;
            transition: transform 0.3s ease;
            height: 100%;
        }
        .news-card:hover {
            transform: translateY(-10px);
        }
        .news-date {
            position: absolute;
            top: 1rem;
            left: 1rem;
            background: var(--primary-color);
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            font-weight: 600;
        }
        .timeline {
            position: relative;
            padding-left: 3rem;
            margin: 3rem 0;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--accent-color);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 2.5rem;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -3.4rem;
            top: 0.5rem;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--primary-color);
            border: 4px solid white;
            box-shadow: 0 0 0 4px var(--accent-color);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 6rem 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .stat-number {
                font-size: 2.5rem;
            }
            .friendlink {
                gap: 1rem;
            }
            .flink {
                padding: 0.5rem 1rem;
                font-size: 0.9rem;
            }
        }