:root {
            --primary-color: #2a5c3d;
            --secondary-color: #d4af37;
            --accent-color: #8b4513;
            --light-color: #f8f9fa;
            --dark-color: #1e3a29;
            --text-color: #333;
            --text-light: #666;
        }
        body {
            font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
            color: var(--text-color);
            line-height: 1.8;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-family: "Noto Serif SC", serif;
            font-weight: 600;
            color: var(--primary-color);
        }
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color);
        }
        .navbar-brand span {
            color: var(--secondary-color);
        }
        .nav-link {
            font-weight: 500;
            padding: 0.5rem 1.2rem !important;
            transition: all 0.3s;
            border-radius: 4px;
        }
        .nav-link:hover, .nav-link.active {
            background-color: rgba(42, 92, 61, 0.1);
            color: var(--primary-color) !important;
        }
        .hero-section {
            background: linear-gradient(rgba(30, 58, 41, 0.85), rgba(30, 58, 41, 0.9)), url('https://images.unsplash.com/photo-1579684385127-1ef15d508118?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') no-repeat center center;
            background-size: cover;
            color: white;
            padding: 10rem 0;
            position: relative;
        }
        .hero-section h1 {
            color: white;
            font-size: 3.5rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        .hero-section p {
            font-size: 1.3rem;
            max-width: 700px;
            margin: 2rem auto;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 0.75rem 2rem;
            font-weight: 500;
            transition: all 0.3s;
        }
        .btn-primary:hover {
            background-color: var(--dark-color);
            border-color: var(--dark-color);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .btn-secondary {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            color: #333;
            padding: 0.75rem 2rem;
            font-weight: 500;
            transition: all 0.3s;
        }
        .btn-secondary:hover {
            background-color: #c19b2e;
            border-color: #c19b2e);
            color: #333;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .section-title {
            position: relative;
            padding-bottom: 1rem;
            margin-bottom: 3rem;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background-color: var(--secondary-color);
            border-radius: 2px;
        }
        .feature-card {
            background: white;
            border-radius: 12px;
            padding: 2.5rem 2rem;
            height: 100%;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            transition: all 0.3s;
            border: 1px solid rgba(42, 92, 61, 0.1);
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
        }
        .feature-icon {
            width: 80px;
            height: 80px;
            background-color: rgba(42, 92, 61, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: var(--primary-color);
            font-size: 2.2rem;
        }
        .product-card {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            transition: all 0.3s;
            height: 100%;
        }
        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
        }
        .product-img {
            height: 250px;
            object-fit: cover;
            width: 100%;
        }
        .product-body {
            padding: 1.5rem;
        }
        .product-title {
            font-size: 1.4rem;
            margin-bottom: 0.75rem;
            color: var(--primary-color);
        }
        .timeline {
            position: relative;
            max-width: 1200px;
            margin: 0 auto;
        }
        .timeline::after {
            content: '';
            position: absolute;
            width: 6px;
            background-color: var(--primary-color);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -3px;
            border-radius: 3px;
        }
        .timeline-item {
            padding: 10px 40px;
            position: relative;
            width: 50%;
            box-sizing: border-box;
        }
        .timeline-item:nth-child(odd) {
            left: 0;
        }
        .timeline-item:nth-child(even) {
            left: 50%;
        }
        .timeline-content {
            padding: 20px 30px;
            background-color: white;
            position: relative;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            border: 1px solid rgba(42, 92, 61, 0.1);
        }
        .timeline-item:nth-child(odd)::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            right: -10px;
            background-color: white;
            border: 4px solid var(--secondary-color);
            top: 20px;
            border-radius: 50%;
            z-index: 1;
        }
        .timeline-item:nth-child(even)::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            left: -10px;
            background-color: white;
            border: 4px solid var(--secondary-color);
            top: 20px;
            border-radius: 50%;
            z-index: 1;
        }
        .contact-info {
            background-color: rgba(42, 92, 61, 0.05);
            border-radius: 12px;
            padding: 2.5rem;
            height: 100%;
        }
        .contact-icon {
            width: 60px;
            height: 60px;
            background-color: rgba(42, 92, 61, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-color);
            font-size: 1.5rem;
            margin-right: 1.5rem;
            flex-shrink: 0;
        }
        .flink {
            display: inline-block;
            padding: 0.5rem 1.5rem;
            margin: 0.5rem;
            background-color: white;
            border-radius: 50px;
            color: var(--text-color);
            text-decoration: none;
            border: 1px solid rgba(42, 92, 61, 0.2);
            transition: all 0.3s;
            font-weight: 500;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .footer {
            background-color: var(--dark-color);
            color: rgba(255,255,255,0.8);
            padding: 4rem 0 2rem;
        }
        .footer a {
            color: rgba(255,255,255,0.8);
            text-decoration: none;
            transition: all 0.3s;
        }
        .footer a:hover {
            color: var(--secondary-color);
        }
        .footer-title {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 0.75rem;
        }
        .footer-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background-color: var(--secondary-color);
        }
        .copyright {
            background-color: rgba(0,0,0,0.2);
            padding: 1.5rem 0;
            margin-top: 3rem;
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
        }
        .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: 1.5rem;
            text-decoration: none;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
            z-index: 1000;
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background-color: var(--dark-color);
            color: white;
        }
        .news-card {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: all 0.3s;
            height: 100%;
            border: 1px solid rgba(42, 92, 61, 0.1);
        }
        .news-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .news-img {
            height: 200px;
            object-fit: cover;
            width: 100%;
        }
        .news-body {
            padding: 1.5rem;
        }
        .news-date {
            color: var(--text-light);
            font-size: 0.9rem;
            margin-bottom: 0.75rem;
        }
        .news-title {
            font-size: 1.2rem;
            margin-bottom: 1rem;
            color: var(--primary-color);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 6rem 0;
            }
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .timeline::after {
                left: 31px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
            }
            .timeline-item:nth-child(even) {
                left: 0;
            }
            .timeline-item:nth-child(odd)::after,
            .timeline-item:nth-child(even)::after {
                left: 21px;
            }
            .contact-info {
                padding: 1.5rem;
            }
        }
        .breadcrumb {
            background-color: rgba(42, 92, 61, 0.05);
            border-radius: 8px;
            padding: 1rem 1.5rem;
        }
        .breadcrumb-item a {
            color: var(--primary-color);
            text-decoration: none;
        }
        .breadcrumb-item.active {
            color: var(--text-light);
        }