:root {
            --primary-color: #0056b3;
            --secondary-color: #e63946;
            --accent-color: #f4a261;
            --dark-color: #1d3557;
            --light-color: #f1faee;
            --gray-color: #8d99ae;
        }
        body {
            font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            color: #333;
            overflow-x: hidden;
        }
        .hero-section {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1581094794329-c8112a89af12?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat;
            color: white;
            min-height: 80vh;
            display: flex;
            align-items: center;
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
        }
        .navbar-brand img {
            height: 50px;
        }
        .nav-link {
            font-weight: 500;
            color: var(--dark-color) !important;
            margin: 0 5px;
            border-bottom: 2px solid transparent;
            transition: all 0.3s;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-color) !important;
            border-bottom-color: var(--primary-color);
        }
        .section-title {
            position: relative;
            margin-bottom: 3rem;
            color: var(--dark-color);
        }
        .section-title::after {
            content: '';
            position: absolute;
            width: 80px;
            height: 4px;
            background-color: var(--accent-color);
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
        }
        .product-card {
            border: none;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s, box-shadow 0.3s;
            height: 100%;
        }
        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        .product-img {
            height: 220px;
            object-fit: cover;
            transition: transform 0.5s;
        }
        .product-card:hover .product-img {
            transform: scale(1.05);
        }
        .badge-custom {
            background-color: var(--primary-color);
            color: white;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
        }
        .icon-box {
            width: 70px;
            height: 70px;
            background-color: rgba(0, 86, 179, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            color: var(--primary-color);
            font-size: 1.8rem;
        }
        .feature-item {
            padding: 30px 20px;
            border-radius: 10px;
            background-color: white;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: all 0.3s;
            height: 100%;
        }
        .feature-item:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .news-card {
            border: none;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: all 0.3s;
            height: 100%;
        }
        .news-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }
        .news-date {
            position: absolute;
            top: 15px;
            left: 15px;
            background-color: var(--primary-color);
            color: white;
            padding: 8px 15px;
            border-radius: 5px;
            font-weight: bold;
        }
        .contact-info-box {
            background-color: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            text-align: center;
            height: 100%;
            transition: all 0.3s;
        }
        .contact-info-box:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }
        .contact-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        .friendlink {
            background-color: #f8f9fa;
            padding: 60px 0;
        }
        .flink {
            display: inline-block;
            background-color: white;
            color: var(--dark-color);
            padding: 10px 20px;
            margin: 8px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 500;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
            transition: all 0.3s;
            border: 1px solid #eee;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 8px 15px rgba(0, 86, 179, 0.2);
        }
        footer {
            background-color: var(--dark-color);
            color: white;
        }
        .footer-links a {
            color: #ddd;
            text-decoration: none;
            transition: color 0.3s;
            display: block;
            margin-bottom: 8px;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background-color: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            font-size: 1.5rem;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
            z-index: 1000;
            opacity: 0;
            transition: opacity 0.3s;
        }
        .back-to-top.show {
            opacity: 1;
        }
        .process-step {
            position: relative;
            padding: 20px;
            text-align: center;
        }
        .process-step::before {
            content: '';
            position: absolute;
            top: 40px;
            left: -50%;
            width: 100%;
            height: 2px;
            background-color: var(--gray-color);
            z-index: 1;
        }
        .process-step:first-child::before {
            display: none;
        }
        .step-number {
            width: 80px;
            height: 80px;
            background-color: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            font-weight: bold;
            margin: 0 auto 20px;
            position: relative;
            z-index: 2;
        }
        @media (max-width: 768px) {
            .hero-section {
                min-height: 60vh;
                text-align: center;
            }
            .process-step::before {
                display: none;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }
        .stats-number {
            font-size: 3rem;
            font-weight: bold;
            color: var(--primary-color);
            margin-bottom: 10px;
        }
        .certificate-logo {
            filter: grayscale(100%);
            opacity: 0.7;
            transition: all 0.3s;
        }
        .certificate-logo:hover {
            filter: grayscale(0);
            opacity: 1;
        }
        .map-container {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            height: 400px;
        }