:root {
            --primary-color: #2a5caa;
            --secondary-color: #f8b500;
            --accent-color: #e63946;
            --dark-color: #1a365d;
            --light-color: #f8f9fa;
            --text-color: #333;
            --text-light: #6c757d;
        }
        body {
            font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            color: var(--text-color);
            line-height: 1.8;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .bg-gradient-primary {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--dark-color) 100%) !important;
        }
        .navbar {
            padding: 1.2rem 0;
            transition: all 0.3s ease;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        .navbar-scrolled {
            padding: 0.7rem 0;
            background-color: rgba(255,255,255,0.98) !important;
        }
        .hero-section {
            padding: 180px 0 120px;
            background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://images.unsplash.com/photo-1552664730-d307ca884978?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat fixed;
            color: white;
            position: relative;
        }
        .section-padding {
            padding: 100px 0;
        }
        .service-card {
            border-radius: 15px;
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
            border: none;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.15);
        }
        .service-icon {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: white;
            font-size: 2rem;
        }
        .portfolio-item {
            position: relative;
            overflow: hidden;
            border-radius: 12px;
            margin-bottom: 30px;
        }
        .portfolio-img {
            transition: transform 0.5s ease;
            width: 100%;
            height: 300px;
            object-fit: cover;
        }
        .portfolio-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
            color: white;
            padding: 2rem;
            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);
        }
        .team-member {
            text-align: center;
            margin-bottom: 30px;
        }
        .team-img {
            width: 200px;
            height: 200px;
            border-radius: 50%;
            object-fit: cover;
            margin-bottom: 1.5rem;
            border: 5px solid white;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }
        .contact-info-box {
            background: var(--light-color);
            border-radius: 15px;
            padding: 2rem;
            height: 100%;
            border-left: 5px solid var(--primary-color);
        }
        .contact-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        .friendlink-container {
            background: var(--light-color);
            border-radius: 15px;
            padding: 2rem;
        }
        .flink {
            display: inline-block;
            padding: 0.8rem 1.5rem;
            margin: 0.5rem;
            background: white;
            border-radius: 50px;
            color: var(--dark-color);
            text-decoration: none;
            transition: all 0.3s ease;
            border: 2px solid transparent;
            font-weight: 500;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(42,92,170,0.2);
            border-color: var(--primary-color);
        }
        .btn-primary-custom {
            background: linear-gradient(135deg, var(--primary-color), var(--dark-color));
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            color: white;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-primary-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(42,92,170,0.3);
            color: white;
        }
        .footer {
            background: var(--dark-color);
            color: white;
            padding: 80px 0 30px;
        }
        .footer a {
            color: #ddd;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer a:hover {
            color: var(--secondary-color);
        }
        .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: 1.5rem;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            text-decoration: none;
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary-color);
            margin-bottom: 0.5rem;
        }
        .timeline {
            position: relative;
            padding-left: 30px;
            margin-left: 30px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--primary-color);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 2.5rem;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -36px;
            top: 5px;
            width: 15px;
            height: 15px;
            border-radius: 50%;
            background: var(--secondary-color);
            border: 3px solid var(--primary-color);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 120px 0 80px;
            }
            .section-padding {
                padding: 60px 0;
            }
            .display-4 {
                font-size: 2.5rem;
            }
            .team-img {
                width: 150px;
                height: 150px;
            }
        }