:root {
            --primary-color: #2c3e50;
            --secondary-color: #c19a6b;
            --accent-color: #16a085;
            --light-color: #f8f9fa;
            --dark-color: #343a40;
            --gray-color: #6c757d;
        }
        body {
            font-family: "Microsoft YaHei", "Segoe UI", sans-serif;
            line-height: 1.6;
            color: #333;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-color);
        }
        .navbar-brand span {
            color: var(--secondary-color);
        }
        .nav-link {
            font-weight: 500;
            color: var(--primary-color) !important;
            transition: all 0.3s ease;
            padding: 0.5rem 1rem !important;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--secondary-color) !important;
            transform: translateY(-2px);
        }
        .hero-section {
            background: linear-gradient(rgba(44, 62, 80, 0.85), rgba(44, 62, 80, 0.9)), url('https://images.unsplash.com/photo-1562157873-818bc0726f68?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1470&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 120px 0;
            margin-top: 76px;
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
        }
        .section-title {
            position: relative;
            margin-bottom: 3rem;
            color: var(--primary-color);
            font-weight: 700;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 0;
            width: 70px;
            height: 3px;
            background-color: var(--secondary-color);
        }
        .section-title.center:after {
            left: 50%;
            transform: translateX(-50%);
        }
        .about-img {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            transition: transform 0.5s ease;
        }
        .about-img:hover {
            transform: scale(1.02);
        }
        .feature-icon {
            width: 70px;
            height: 70px;
            background-color: rgba(193, 154, 107, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: var(--secondary-color);
            font-size: 1.8rem;
        }
        .product-card {
            border: none;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            height: 100%;
        }
        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        .product-img {
            height: 250px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .product-card:hover .product-img {
            transform: scale(1.05);
        }
        .product-category {
            color: var(--secondary-color);
            font-weight: 600;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .news-card {
            border: none;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            height: 100%;
        }
        .news-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.12);
        }
        .news-date {
            color: var(--gray-color);
            font-size: 0.9rem;
        }
        .contact-info {
            padding: 30px;
            background-color: var(--light-color);
            border-radius: 10px;
            height: 100%;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .contact-icon {
            width: 50px;
            height: 50px;
            background-color: rgba(193, 154, 107, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--secondary-color);
            font-size: 1.3rem;
            margin-bottom: 1rem;
        }
        .friendlink {
            background-color: var(--light-color);
            padding: 60px 0;
        }
        .flink {
            display: inline-block;
            padding: 10px 20px;
            margin: 5px;
            background-color: white;
            border-radius: 5px;
            color: var(--dark-color);
            text-decoration: none;
            transition: all 0.3s ease;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
            border: 1px solid #eee;
        }
        .flink:hover {
            background-color: var(--secondary-color);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(193, 154, 107, 0.2);
        }
        footer {
            background-color: var(--primary-color);
            color: rgba(255, 255, 255, 0.8);
        }
        .footer-link {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer-link:hover {
            color: var(--secondary-color);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background-color: var(--secondary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            text-decoration: none;
            opacity: 0;
            transition: all 0.3s ease;
            z-index: 1000;
        }
        .back-to-top.visible {
            opacity: 1;
        }
        .back-to-top:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-5px);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--secondary-color);
            margin-bottom: 0.5rem;
        }
        .stat-label {
            color: var(--gray-color);
            font-size: 1rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .btn-primary-custom {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            color: white;
            padding: 10px 30px;
            border-radius: 5px;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        .btn-primary-custom:hover {
            background-color: #b0895d;
            border-color: #b0895d;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(193, 154, 107, 0.3);
        }
        .timeline {
            position: relative;
            padding-left: 30px;
        }
        .timeline:before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 2px;
            background-color: var(--secondary-color);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 30px;
        }
        .timeline-item:before {
            content: '';
            position: absolute;
            left: -36px;
            top: 5px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background-color: var(--secondary-color);
            border: 3px solid white;
            box-shadow: 0 0 0 3px rgba(193, 154, 107, 0.2);
        }
        .process-step {
            text-align: center;
            padding: 20px;
            border-radius: 10px;
            background-color: white;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            height: 100%;
            transition: all 0.3s ease;
        }
        .process-step:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .step-number {
            width: 50px;
            height: 50px;
            background-color: var(--secondary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 700;
            margin: 0 auto 20px;
        }
        .quality-badge {
            display: inline-block;
            padding: 5px 15px;
            background-color: rgba(22, 160, 133, 0.1);
            color: var(--accent-color);
            border-radius: 20px;
            font-size: 0.9rem;
            margin-right: 10px;
            margin-bottom: 10px;
        }