:root {
            --primary: #2a7221;
            --secondary: #0d4f0c;
            --accent: #f8b500;
            --light: #f8f9fa;
            --dark: #343a40;
        }
        body {
            font-family: "Microsoft YaHei", "Segoe UI", sans-serif;
            color: #333;
        }
        .navbar-brand {
            font-weight: 700;
            color: var(--primary) !important;
        }
        .hero-section {
            background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://images.unsplash.com/photo-1581092160562-40aa08e78837?ixlib=rb-4.0.3&auto=format&fit=crop&w=1600&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 120px 0;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 40px;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background: var(--primary);
        }
        .card-hover {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .card-hover:hover {
            transform: translateY(-10px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .icon-box {
            width: 70px;
            height: 70px;
            background: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.8rem;
        }
        .contact-info i {
            color: var(--primary);
            margin-right: 10px;
        }
        footer {
            background: linear-gradient(to right, var(--secondary), var(--primary));
            color: white;
        }
        .friendlink {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            justify-content: center;
            margin-top: 20px;
        }
        .flink {
            background: rgba(255,255,255,0.1);
            padding: 8px 20px;
            border-radius: 30px;
            color: white;
            text-decoration: none;
            transition: all 0.3s ease;
        }
        .flink:hover {
            background: var(--accent);
            color: var(--dark);
            transform: scale(1.05);
        }
        .product-img {
            height: 200px;
            object-fit: cover;
        }
        .news-card {
            border-left: 4px solid var(--primary);
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }