:root {
            --primary-color: #1a365d;
            --secondary-color: #e63946;
            --accent-color: #2a9d8f;
            --light-color: #f8f9fa;
            --dark-color: #212529;
            --gray-color: #6c757d;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: var(--dark-color);
            line-height: 1.7;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .navbar-brand span {
            color: var(--secondary-color);
        }
        .hero-section {
            background: linear-gradient(rgba(26, 54, 93, 0.85), rgba(26, 54, 93, 0.9)), url('https://images.unsplash.com/photo-1541888946425-d81bb19240f5?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat;
            color: white;
            padding: 120px 0;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 50px;
            text-align: center;
            font-weight: 700;
        }
        .section-title:after {
            content: '';
            position: absolute;
            width: 80px;
            height: 4px;
            background: var(--secondary-color);
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
        }
        .card-hover {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
        }
        .card-hover:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15) !important;
        }
        .product-card .card-img-top {
            height: 220px;
            object-fit: cover;
        }
        .btn-primary-custom {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 12px 30px;
            font-weight: 600;
            transition: all 0.3s;
        }
        .btn-primary-custom:hover {
            background-color: #0d284c;
            border-color: #0d284c;
            transform: scale(1.05);
        }
        .stats-section {
            background-color: var(--light-color);
            padding: 80px 0;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--primary-color);
        }
        .flink {
            display: inline-block;
            background: var(--light-color);
            padding: 12px 25px;
            margin: 8px;
            border-radius: 5px;
            color: var(--dark-color);
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s;
            border: 1px solid #dee2e6;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-3px);
        }
        .friendlink {
            background-color: #f8f9fa;
            padding: 60px 0;
        }
        .footer {
            background-color: var(--primary-color);
            color: white;
            padding-top: 60px;
        }
        .footer a {
            color: #e0e0e0;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer a:hover {
            color: white;
            text-decoration: underline;
        }
        .contact-info i {
            width: 40px;
            color: var(--accent-color);
        }
        .contact-form .form-control {
            padding: 12px 15px;
            border-radius: 5px;
            border: 1px solid #ced4da;
        }
        .contact-form .form-control:focus {
            border-color: var(--accent-color);
            box-shadow: 0 0 0 0.25rem rgba(42, 157, 143, 0.25);
        }
        .news-card {
            border-left: 4px solid var(--accent-color);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 80px 0;
                text-align: center;
            }
            .hero-section h1 {
                font-size: 2rem;
            }
            .stat-number {
                font-size: 2.2rem;
            }
        }