:root {
            --primary-color: #0a5c36;
            --secondary-color: #2e8b57;
            --accent-color: #4cc9b0;
            --light-color: #f8f9fa;
            --dark-color: #343a40;
            --gray-color: #6c757d;
        }
        body {
            font-family: 'Microsoft YaHei', 'Segoe UI', system-ui, sans-serif;
            color: #333;
            line-height: 1.6;
            overflow-x: hidden;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
        }
        .hero-section {
            background: linear-gradient(rgba(10, 92, 54, 0.85), rgba(46, 139, 87, 0.9)), url('https://images.unsplash.com/photo-1558618666-fcd25c85cd64?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 150px 0;
            position: relative;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 40px;
            color: var(--primary-color);
            font-weight: 700;
        }
        .section-title:after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 60px;
            height: 4px;
            background-color: var(--accent-color);
        }
        .section-title.text-center:after {
            left: 50%;
            transform: translateX(-50%);
        }
        .feature-card {
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
            border: 1px solid #e9ecef;
            height: 100%;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .feature-icon {
            width: 80px;
            height: 80px;
            background-color: rgba(10, 92, 54, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            color: var(--primary-color);
            font-size: 2rem;
        }
        .product-card {
            border-radius: 10px;
            overflow: hidden;
            transition: all 0.3s ease;
            border: 1px solid #dee2e6;
        }
        .product-card:hover {
            box-shadow: 0 10px 20px rgba(0,0,0,0.08);
        }
        .product-img {
            height: 220px;
            object-fit: cover;
            width: 100%;
        }
        .news-card {
            border-left: 4px solid var(--accent-color);
            padding-left: 20px;
            margin-bottom: 25px;
        }
        .contact-info-card {
            background-color: #f8f9fa;
            border-radius: 10px;
            padding: 30px;
            height: 100%;
        }
        .contact-icon {
            width: 60px;
            height: 60px;
            background-color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 15px;
            color: var(--primary-color);
            font-size: 1.5rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .footer {
            background-color: #1a472a;
            color: white;
            padding-top: 60px;
            padding-bottom: 30px;
        }
        .footer a {
            color: #d1d1d1;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer a:hover {
            color: white;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            margin-top: 40px;
        }
        .flink {
            display: inline-block;
            background-color: rgba(255,255,255,0.1);
            padding: 8px 20px;
            border-radius: 30px;
            margin: 5px 10px 5px 0;
            transition: all 0.3s;
            color: white;
            text-decoration: none;
        }
        .flink:hover {
            background-color: var(--accent-color);
            color: white;
            transform: translateY(-3px);
        }
        .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;
            font-size: 1.2rem;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
            text-decoration: none;
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background-color: var(--secondary-color);
            color: white;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 100px 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .contact-info-card {
                margin-bottom: 20px;
            }
        }
        .cert-badge {
            display: inline-block;
            background-color: #e9f7ef;
            color: var(--primary-color);
            padding: 5px 15px;
            border-radius: 20px;
            font-size: 0.85rem;
            margin-right: 10px;
            margin-bottom: 10px;
        }