:root {
            --primary-color: #2c6e49;
            --secondary-color: #4c956c;
            --accent-color: #f4a261;
            --light-color: #fefee3;
            --dark-color: #1d3557;
            --text-color: #333;
            --light-text: #666;
            --border-radius: 8px;
            --box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            --transition: all 0.3s ease;
        }
        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-weight: 700;
            color: var(--dark-color);
            margin-bottom: 1.5rem;
        }
        .section-title {
            position: relative;
            margin-bottom: 3rem;
            padding-bottom: 1rem;
            text-align: center;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background-color: var(--accent-color);
            border-radius: 2px;
        }
        .section-title.text-start:after {
            left: 0;
            transform: none;
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            padding: 1rem 0;
            transition: var(--transition);
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .navbar-brand span {
            color: var(--accent-color);
        }
        .nav-link {
            font-weight: 500;
            margin: 0 0.5rem;
            color: var(--dark-color) !important;
            transition: var(--transition);
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-color) !important;
        }
        .navbar-toggler {
            border: none;
            padding: 0.5rem;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }
        .hero-section {
            background: linear-gradient(rgba(44, 110, 73, 0.85), rgba(44, 110, 73, 0.9)), url('https://images.unsplash.com/photo-1500382017468-9049fed747ef?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            color: white;
            padding: 10rem 0 8rem;
            min-height: 100vh;
            display: flex;
            align-items: center;
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            color: white;
        }
        .hero-subtitle {
            font-size: 1.3rem;
            margin-bottom: 2.5rem;
            opacity: 0.9;
            max-width: 700px;
        }
        .btn-primary-custom {
            background-color: var(--accent-color);
            border-color: var(--accent-color);
            color: white;
            padding: 0.8rem 2rem;
            border-radius: var(--border-radius);
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-primary-custom:hover {
            background-color: #e76f51;
            border-color: #e76f51;
            transform: translateY(-3px);
            box-shadow: var(--box-shadow);
        }
        .btn-outline-custom {
            background-color: transparent;
            border: 2px solid white;
            color: white;
            padding: 0.8rem 2rem;
            border-radius: var(--border-radius);
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-outline-custom:hover {
            background-color: white;
            color: var(--primary-color);
            transform: translateY(-3px);
        }
        .feature-card {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 2.5rem 2rem;
            height: 100%;
            transition: var(--transition);
            box-shadow: var(--box-shadow);
            border: 1px solid rgba(0,0,0,0.05);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .feature-icon {
            width: 80px;
            height: 80px;
            background-color: rgba(44, 110, 73, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            font-size: 2.2rem;
            color: var(--primary-color);
        }
        .product-card {
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            height: 100%;
            background-color: white;
        }
        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.12);
        }
        .product-img {
            height: 220px;
            width: 100%;
            object-fit: cover;
        }
        .product-body {
            padding: 1.8rem;
        }
        .stats-section {
            background: linear-gradient(rgba(29, 53, 87, 0.9), rgba(29, 53, 87, 0.95)), url('https://images.unsplash.com/photo-1590779033100-9f60a05a013d?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            color: white;
            padding: 6rem 0;
        }
        .stat-item {
            text-align: center;
        }
        .stat-number {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 0.5rem;
            color: var(--accent-color);
        }
        .stat-text {
            font-size: 1.1rem;
            opacity: 0.9;
        }
        .timeline {
            position: relative;
            max-width: 1200px;
            margin: 0 auto;
        }
        .timeline::after {
            content: '';
            position: absolute;
            width: 6px;
            background-color: var(--secondary-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: 1.5rem;
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            position: relative;
        }
        .timeline-item:nth-child(odd) .timeline-content::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            right: -10px;
            background-color: white;
            top: 30px;
            border-radius: 50%;
            z-index: 1;
            box-shadow: 1px 1px 0px rgba(0,0,0,0.2);
        }
        .timeline-item:nth-child(even) .timeline-content::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            left: -10px;
            background-color: white;
            top: 30px;
            border-radius: 50%;
            z-index: 1;
            box-shadow: -1px 1px 0px rgba(0,0,0,0.2);
        }
        .timeline-dot {
            position: absolute;
            width: 25px;
            height: 25px;
            right: -13px;
            background-color: var(--primary-color);
            border: 5px solid white;
            border-radius: 50%;
            top: 30px;
            z-index: 2;
        }
        .timeline-item:nth-child(even) .timeline-dot {
            left: -13px;
            right: auto;
        }
        @media screen and (max-width: 768px) {
            .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) .timeline-content::after,
            .timeline-item:nth-child(even) .timeline-content::after {
                left: -10px;
                right: auto;
            }
            .timeline-dot {
                left: 18px !important;
                right: auto !important;
            }
        }
        friendlink {
            display: block;
            margin-top: 3rem;
            padding-top: 3rem;
            border-top: 1px solid #eee;
        }
        .flink {
            display: inline-block;
            background-color: #f8f9fa;
            border: 1px solid #e9ecef;
            border-radius: var(--border-radius);
            padding: 0.8rem 1.5rem;
            margin: 0.5rem;
            color: var(--dark-color);
            text-decoration: none;
            transition: var(--transition);
            font-weight: 500;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            border-color: var(--primary-color);
        }
        .footer {
            background-color: var(--dark-color);
            color: rgba(255, 255, 255, 0.8);
            padding: 5rem 0 2rem;
        }
        .footer h5 {
            color: white;
            margin-bottom: 1.8rem;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-color);
            padding-left: 5px;
        }
        .footer-contact i {
            width: 30px;
            color: var(--accent-color);
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 2rem;
            margin-top: 3rem;
            text-align: center;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
        }
        @media (max-width: 992px) {
            .hero-title {
                font-size: 2.8rem;
            }
            .hero-subtitle {
                font-size: 1.2rem;
            }
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.3rem;
            }
            .hero-section {
                padding: 8rem 0 6rem;
                text-align: center;
            }
            .section-title {
                font-size: 2rem;
            }
            .stat-number {
                font-size: 2.8rem;
            }
        }
        @media (max-width: 576px) {
            .hero-title {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .feature-card, .product-body {
                padding: 1.5rem;
            }
        }
        .fade-in {
            animation: fadeIn 1s ease-out;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .form-control {
            border-radius: var(--border-radius);
            padding: 0.8rem 1rem;
            border: 1px solid #ddd;
            transition: var(--transition);
        }
        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.25rem rgba(44, 110, 73, 0.25);
        }
        textarea.form-control {
            min-height: 150px;
        }