:root {
            --primary: #0056a6;
            --secondary: #e63946;
            --accent: #2a9d8f;
            --light: #f8f9fa;
            --dark: #212529;
            --gray: #6c757d;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            line-height: 1.8;
            color: var(--dark);
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            margin-bottom: 1.5rem;
        }
        .text-primary { color: var(--primary) !important; }
        .bg-primary { background-color: var(--primary) !important; }
        .btn-primary {
            background-color: var(--primary);
            border-color: var(--primary);
            padding: 12px 30px;
            border-radius: 30px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            background-color: #004080;
            border-color: #004080;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,86,166,0.2);
        }
        .section-padding {
            padding: 80px 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 50px 0;
            }
        }
        .hero-section {
            background: linear-gradient(rgba(0, 86, 166, 0.9), rgba(0, 86, 166, 0.8)), url('https://images.unsplash.com/photo-1581094794329-c8112a89af12?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 180px 0 120px;
            position: relative;
        }
        .hero-section h1 {
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
        }
        .hero-section p {
            font-size: 1.3rem;
            margin-bottom: 2rem;
            opacity: 0.95;
        }
        .icon-box {
            padding: 30px;
            border-radius: 15px;
            background: white;
            box-shadow: 0 15px 30px rgba(0,0,0,0.08);
            transition: transform 0.3s ease;
            height: 100%;
        }
        .icon-box:hover {
            transform: translateY(-10px);
        }
        .icon-box i {
            font-size: 3rem;
            color: var(--primary);
            margin-bottom: 20px;
        }
        .product-card {
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            transition: all 0.3s ease;
            height: 100%;
            background: white;
        }
        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.12);
        }
        .product-card img {
            height: 250px;
            width: 100%;
            object-fit: cover;
        }
        .product-card .card-body {
            padding: 25px;
        }
        .timeline {
            position: relative;
            padding-left: 30px;
            margin-top: 30px;
        }
        .timeline:before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--primary);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 40px;
        }
        .timeline-item:before {
            content: '';
            position: absolute;
            left: -36px;
            top: 5px;
            width: 15px;
            height: 15px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid white;
            box-shadow: 0 0 0 3px var(--primary);
        }
        .nav-pills .nav-link {
            color: var(--dark);
            font-weight: 600;
            padding: 15px 30px;
            margin: 5px;
            border-radius: 30px;
            transition: all 0.3s ease;
        }
        .nav-pills .nav-link.active {
            background-color: var(--primary);
            color: white;
        }
        .contact-info-box {
            padding: 30px;
            border-radius: 15px;
            background: var(--light);
            height: 100%;
            border-left: 5px solid var(--primary);
        }
        .contact-info-box i {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 20px;
        }
        .flink {
            display: inline-block;
            background: var(--light);
            padding: 12px 25px;
            margin: 8px;
            border-radius: 30px;
            color: var(--dark);
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            border: 2px solid transparent;
        }
        .flink:hover {
            background: var(--primary);
            color: white;
            border-color: var(--primary);
            transform: translateY(-3px);
        }
        .navbar {
            padding: 20px 0;
            transition: all 0.4s ease;
            background: rgba(255,255,255,0.95);
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
        }
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary) !important;
        }
        .navbar-nav .nav-link {
            font-weight: 600;
            padding: 10px 20px !important;
            color: var(--dark) !important;
            transition: color 0.3s ease;
        }
        .navbar-nav .nav-link:hover {
            color: var(--primary) !important;
        }
        .sticky-top {
            backdrop-filter: blur(10px);
        }
        .stat-number {
            font-size: 3.5rem;
            font-weight: 800;
            color: var(--primary);
            display: block;
            line-height: 1;
        }
        .stat-label {
            font-size: 1.1rem;
            color: var(--gray);
            font-weight: 600;
        }
        .testimonial-card {
            background: white;
            border-radius: 15px;
            padding: 30px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            height: 100%;
        }
        .testimonial-card img {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            object-fit: cover;
            margin-bottom: 20px;
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 70px 0 20px;
        }
        footer a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        footer a:hover {
            color: white;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            margin-top: 50px;
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--primary);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            text-decoration: none;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            z-index: 999;
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background: #004080;
            color: white;
        }
        .form-control {
            padding: 15px;
            border-radius: 10px;
            border: 1px solid #ddd;
            margin-bottom: 20px;
        }
        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 0.25rem rgba(0,86,166,0.25);
        }
        .map-container {
            border-radius: 15px;
            overflow: hidden;
            height: 400px;
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .accordion-button {
            font-weight: 600;
            padding: 20px;
            font-size: 1.1rem;
        }
        .accordion-button:not(.collapsed) {
            background-color: rgba(0,86,166,0.05);
            color: var(--primary);
        }