:root {
            --primary-color: #2c5530;
            --secondary-color: #d4af37;
            --light-color: #f8f9fa;
            --dark-color: #343a40;
            --gray-color: #6c757d;
        }
        body {
            font-family: "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
            color: #333;
            overflow-x: hidden;
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
        }
        .navbar-brand {
            font-weight: 700;
            color: var(--primary-color);
            font-size: 1.8rem;
        }
        .navbar-nav .nav-link {
            color: var(--dark-color);
            font-weight: 500;
            padding: 0.5rem 1.2rem;
            transition: color 0.3s;
        }
        .navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
            color: var(--primary-color);
        }
        .hero-section {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1555041469-a586c61ea9bc?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;
            margin-bottom: 3rem;
            text-align: center;
            color: var(--primary-color);
        }
        .section-title:after {
            content: '';
            position: absolute;
            width: 80px;
            height: 3px;
            background-color: var(--secondary-color);
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
        }
        .card-hover {
            transition: transform 0.3s, box-shadow 0.3s;
            border: none;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            height: 100%;
        }
        .card-hover: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;
        }
        .card-hover:hover .product-img {
            transform: scale(1.05);
        }
        .icon-box {
            width: 70px;
            height: 70px;
            background-color: var(--primary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            color: white;
            font-size: 1.8rem;
        }
        .btn-primary-custom {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            color: white;
            padding: 10px 30px;
            border-radius: 30px;
            font-weight: 600;
            transition: all 0.3s;
        }
        .btn-primary-custom:hover {
            background-color: #1e3a23;
            border-color: #1e3a23;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(44, 85, 48, 0.2);
        }
        .btn-secondary-custom {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            color: #333;
            padding: 10px 30px;
            border-radius: 30px;
            font-weight: 600;
            transition: all 0.3s;
        }
        .btn-secondary-custom:hover {
            background-color: #c19b25;
            border-color: #c19b25;
            color: #333;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(212, 175, 55, 0.2);
        }
        .footer {
            background-color: #222;
            color: #ddd;
            padding: 60px 0 20px;
        }
        .footer a {
            color: #ddd;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer a:hover {
            color: var(--secondary-color);
        }
        .copyright {
            border-top: 1px solid #444;
            padding-top: 20px;
            margin-top: 40px;
            font-size: 0.9rem;
        }
        .friendlink {
            background-color: #f8f9fa;
            padding: 50px 0;
        }
        .flink {
            display: inline-block;
            margin: 5px 10px;
            padding: 8px 20px;
            background-color: white;
            border-radius: 30px;
            color: var(--primary-color);
            text-decoration: none;
            border: 1px solid #e0e0e0;
            transition: all 0.3s;
            font-weight: 500;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
            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;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
            z-index: 1000;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .back-to-top.show {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background-color: var(--secondary-color);
            color: #333;
        }
        .process-step {
            position: relative;
            padding-left: 80px;
            margin-bottom: 40px;
        }
        .process-step .step-number {
            position: absolute;
            left: 0;
            top: 0;
            width: 60px;
            height: 60px;
            background-color: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: bold;
        }
        .testimonial-card {
            background-color: white;
            border-radius: 10px;
            padding: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            margin-bottom: 30px;
            height: 100%;
        }
        .testimonial-avatar {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            object-fit: cover;
            margin-right: 20px;
        }
        .accordion-button:not(.collapsed) {
            background-color: rgba(44, 85, 48, 0.1);
            color: var(--primary-color);
        }
        .accordion-button:focus {
            box-shadow: 0 0 0 0.25rem rgba(44, 85, 48, 0.25);
        }
        .timeline-item {
            position: relative;
            padding-left: 40px;
            margin-bottom: 30px;
        }
        .timeline-item:before {
            content: '';
            position: absolute;
            left: 0;
            top: 5px;
            width: 20px;
            height: 20px;
            background-color: var(--secondary-color);
            border-radius: 50%;
        }
        .timeline-item:after {
            content: '';
            position: absolute;
            left: 9px;
            top: 25px;
            width: 2px;
            height: calc(100% + 5px);
            background-color: #ddd;
        }
        .timeline-item:last-child:after {
            display: none;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 100px 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .process-step {
                padding-left: 70px;
            }
            .navbar-nav {
                text-align: center;
                padding-top: 10px;
            }
        }