:root {
            --primary-color: #1a5f7a;
            --secondary-color: #57cc99;
            --accent-color: #ff9a3c;
            --light-color: #f8f9fa;
            --dark-color: #343a40;
            --gray-color: #6c757d;
        }
        body {
            font-family: 'Microsoft YaHei', 'Segoe UI', system-ui, sans-serif;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--primary-color);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .navbar-brand span {
            color: var(--accent-color);
        }
        .nav-link {
            font-weight: 500;
            margin: 0 5px;
            transition: all 0.3s ease;
        }
        .nav-link:hover {
            color: var(--secondary-color) !important;
            transform: translateY(-2px);
        }
        .hero-section {
            background: linear-gradient(rgba(26, 95, 122, 0.85), rgba(26, 95, 122, 0.9)), url('https://images.unsplash.com/photo-1513584684374-8bab748fbf90?ixlib=rb-4.0.3&auto=format&fit=crop&w=1600&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 150px 0 120px;
            position: relative;
        }
        .hero-section h1 {
            color: white;
            font-size: 3.2rem;
            margin-bottom: 25px;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
        }
        .btn-primary {
            background-color: var(--accent-color);
            border-color: var(--accent-color);
            padding: 12px 35px;
            font-weight: 600;
            border-radius: 30px;
            transition: all 0.4s;
        }
        .btn-primary:hover {
            background-color: #ff7b00;
            border-color: #ff7b00;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(255, 154, 60, 0.3);
        }
        .section-title {
            position: relative;
            margin-bottom: 60px;
            text-align: center;
        }
        .section-title:after {
            content: '';
            position: absolute;
            width: 80px;
            height: 4px;
            background: var(--secondary-color);
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
            border-radius: 2px;
        }
        .service-card {
            border: none;
            border-radius: 15px;
            overflow: hidden;
            transition: all 0.4s ease;
            height: 100%;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
        }
        .service-card:hover {
            transform: translateY(-15px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.15);
        }
        .service-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            color: white;
            font-size: 32px;
        }
        .project-item {
            position: relative;
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 30px;
            box-shadow: 0 8px 25px rgba(0,0,0,0.1);
        }
        .project-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(transparent, rgba(26, 95, 122, 0.9));
            color: white;
            padding: 25px;
            transform: translateY(30px);
            transition: all 0.4s ease;
            opacity: 0;
        }
        .project-item:hover .project-overlay {
            transform: translateY(0);
            opacity: 1;
        }
        .team-member {
            text-align: center;
            margin-bottom: 30px;
        }
        .team-img {
            width: 180px;
            height: 180px;
            border-radius: 50%;
            object-fit: cover;
            margin: 0 auto 20px;
            border: 5px solid #f1f1f1;
            transition: all 0.3s ease;
        }
        .team-member:hover .team-img {
            border-color: var(--secondary-color);
            transform: scale(1.05);
        }
        .stats-counter {
            background: linear-gradient(rgba(26, 95, 122, 0.9), rgba(87, 204, 153, 0.9)), url('https://images.unsplash.com/photo-1545324418-cc1a3fa10c00?ixlib=rb-4.0.3&auto=format&fit=crop&w=1600&q=80');
            background-size: cover;
            background-attachment: fixed;
            padding: 100px 0;
            color: white;
        }
        .counter-item {
            text-align: center;
        }
        .counter {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 10px;
            color: white;
        }
        .contact-info-box {
            background: white;
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 15px 40px rgba(0,0,0,0.08);
            margin-bottom: 30px;
            transition: all 0.3s ease;
            border-left: 5px solid var(--secondary-color);
        }
        .contact-info-box:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 50px rgba(0,0,0,0.12);
        }
        .contact-icon {
            width: 60px;
            height: 60px;
            background: var(--primary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 24px;
            margin-bottom: 20px;
        }
        footer {
            background-color: #1c3c4d;
            color: #ccc;
            padding-top: 80px;
        }
        .footer-links h5 {
            color: white;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 15px;
        }
        .footer-links h5:after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 50px;
            height: 3px;
            background: var(--accent-color);
        }
        .footer-links ul {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #aaa;
            text-decoration: none;
            transition: all 0.3s;
        }
        .footer-links a:hover {
            color: var(--secondary-color);
            padding-left: 5px;
        }
        .friendlink {
            background-color: rgba(255,255,255,0.05);
            border-radius: 10px;
            padding: 30px;
            margin-top: 40px;
        }
        .flink {
            display: inline-block;
            background: rgba(255,255,255,0.1);
            color: #ddd;
            padding: 8px 20px;
            margin: 5px 10px;
            border-radius: 30px;
            text-decoration: none;
            transition: all 0.3s;
            border: 1px solid transparent;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--secondary-color);
            transform: translateY(-3px);
        }
        .copyright {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding: 25px 0;
            margin-top: 60px;
            text-align: center;
            font-size: 0.9rem;
        }
        .whatsapp-float {
            position: fixed;
            width: 60px;
            height: 60px;
            bottom: 30px;
            right: 30px;
            background-color: #25d366;
            color: white;
            border-radius: 50px;
            text-align: center;
            font-size: 30px;
            box-shadow: 0 5px 15px rgba(37, 211, 102, 0.4);
            z-index: 1000;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s;
        }
        .whatsapp-float:hover {
            background-color: #1da851;
            color: white;
            transform: scale(1.1);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 100px 0 80px;
            }
            .hero-section h1 {
                font-size: 2.2rem;
            }
            .counter {
                font-size: 2.5rem;
            }
            .whatsapp-float {
                width: 50px;
                height: 50px;
                bottom: 20px;
                right: 20px;
                font-size: 24px;
            }
        }