:root {
            --primary-color: #8B4513;
            --secondary-color: #D4AF37;
            --dark-color: #1a1a1a;
            --light-color: #f8f9fa;
            --text-color: #333;
        }
        body {
            font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            color: var(--text-color);
            overflow-x: hidden;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
            color: var(--secondary-color) !important;
        }
        .navbar-nav .nav-link {
            font-weight: 500;
            transition: all 0.3s ease;
        }
        .navbar-nav .nav-link:hover {
            color: var(--secondary-color) !important;
            transform: translateY(-2px);
        }
        .hero-section {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1579783473566-7089c6b8e47a?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') no-repeat center center;
            background-size: cover;
            color: white;
            padding: 120px 0;
            position: relative;
        }
        .hero-section h1 {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 50px;
            text-align: center;
            color: var(--dark-color);
        }
        .section-title:after {
            content: '';
            position: absolute;
            width: 80px;
            height: 3px;
            background: var(--secondary-color);
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
        }
        .product-card {
            border: none;
            border-radius: 10px;
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
        }
        .product-card img {
            height: 250px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .product-card:hover img {
            transform: scale(1.05);
        }
        .product-card .card-body {
            padding: 1.5rem;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 10px 30px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            background-color: #6b3510;
            border-color: #6b3510;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(139, 69, 19, 0.3);
        }
        .process-step {
            text-align: center;
            padding: 30px 20px;
            border-radius: 10px;
            background: white;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s ease;
            height: 100%;
        }
        .process-step:hover {
            transform: translateY(-10px);
        }
        .process-step .step-icon {
            font-size: 3rem;
            color: var(--secondary-color);
            margin-bottom: 20px;
        }
        .process-step h4 {
            margin-bottom: 15px;
            color: var(--dark-color);
        }
        .news-card {
            border-left: 4px solid var(--secondary-color);
            padding-left: 20px;
            margin-bottom: 30px;
            transition: all 0.3s ease;
        }
        .news-card:hover {
            padding-left: 30px;
            border-left-width: 8px;
        }
        .contact-info {
            background: var(--light-color);
            padding: 30px;
            border-radius: 10px;
            height: 100%;
        }
        .contact-info i {
            color: var(--secondary-color);
            margin-right: 10px;
            font-size: 1.2rem;
        }
        .footer {
            background: var(--dark-color);
            color: white;
            padding: 60px 0 30px;
        }
        .footer a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer a:hover {
            color: var(--secondary-color);
        }
        .friendlink {
            background: #f8f9fa;
            padding: 60px 0;
        }
        .flink {
            display: inline-block;
            padding: 8px 20px;
            margin: 5px 10px;
            background: white;
            border-radius: 5px;
            color: var(--text-color);
            text-decoration: none;
            transition: all 0.3s ease;
            border: 1px solid #eaeaea;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            border-color: var(--primary-color);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            opacity: 0;
            transition: all 0.3s ease;
            z-index: 1000;
        }
        .back-to-top.show {
            opacity: 1;
        }
        .back-to-top:hover {
            background: var(--secondary-color);
            transform: translateY(-5px);
        }
        .timeline {
            position: relative;
            padding: 20px 0;
        }
        .timeline:before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--secondary-color);
            transform: translateX(-50%);
        }
        @media (max-width: 768px) {
            .timeline:before {
                left: 20px;
            }
        }
        .timeline-item {
            position: relative;
            margin-bottom: 40px;
        }
        .timeline-content {
            background: white;
            padding: 20px;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            position: relative;
        }
        .timeline-content:before {
            content: '';
            position: absolute;
            top: 20px;
            width: 20px;
            height: 20px;
            background: var(--secondary-color);
            border-radius: 50%;
        }
        .timeline-item:nth-child(odd) .timeline-content:before {
            right: -10px;
        }
        .timeline-item:nth-child(even) .timeline-content:before {
            left: -10px;
        }
        @media (max-width: 768px) {
            .timeline-content:before {
                left: -10px !important;
            }
        }
        .certificate-img {
            border: 1px solid #eee;
            padding: 10px;
            background: white;
            transition: transform 0.3s ease;
        }
        .certificate-img:hover {
            transform: scale(1.03);
        }
        .accordion-button:not(.collapsed) {
            background-color: rgba(139, 69, 19, 0.1);
            color: var(--primary-color);
        }
        .map-container {
            height: 400px;
            border-radius: 10px;
            overflow: hidden;
        }