:root {
            --primary-color: #2a6e3f;
            --secondary-color: #f8b704;
            --accent-color: #d32f2f;
            --light-color: #f8f9fa;
            --dark-color: #333;
            --gray-color: #6c757d;
        }
        body {
            font-family: "Microsoft YaHei", "Segoe UI", sans-serif;
            line-height: 1.6;
            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;
            padding: 15px 0;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .navbar-brand span {
            color: var(--secondary-color);
        }
        .nav-link {
            font-weight: 500;
            margin: 0 10px;
            color: var(--dark-color) !important;
            transition: color 0.3s;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-color) !important;
        }
        .hero-section {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1517248135467-4c7edcad34c4?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 120px 0;
            min-height: 90vh;
            display: flex;
            align-items: center;
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .hero-subtitle {
            font-size: 1.5rem;
            margin-bottom: 30px;
            opacity: 0.9;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 12px 30px;
            font-weight: 600;
            transition: all 0.3s;
        }
        .btn-primary:hover {
            background-color: #1f5230;
            border-color: #1f5230;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .btn-secondary {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            color: #333;
            padding: 12px 30px;
            font-weight: 600;
            transition: all 0.3s;
        }
        .btn-secondary:hover {
            background-color: #d89c03;
            border-color: #d89c03;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .service-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%;
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        .service-icon {
            width: 70px;
            height: 70px;
            background-color: rgba(42, 110, 63, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--primary-color);
            font-size: 1.8rem;
        }
        .about-section {
            padding: 100px 0;
            background-color: #f9f9f9;
        }
        .section-title {
            color: var(--primary-color);
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
            display: inline-block;
        }
        .section-title:after {
            content: '';
            position: absolute;
            width: 50%;
            height: 3px;
            background-color: var(--secondary-color);
            bottom: -10px;
            left: 0;
        }
        .stats-box {
            text-align: center;
            padding: 30px 20px;
            background-color: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: all 0.3s;
        }
        .stats-box:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }
        .stats-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 5px;
        }
        .portfolio-item {
            position: relative;
            overflow: hidden;
            border-radius: 10px;
            margin-bottom: 30px;
        }
        .portfolio-img {
            width: 100%;
            height: 300px;
            object-fit: cover;
            transition: transform 0.5s;
        }
        .portfolio-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
            color: white;
            padding: 30px;
            transform: translateY(20px);
            opacity: 0;
            transition: all 0.3s;
        }
        .portfolio-item:hover .portfolio-overlay {
            transform: translateY(0);
            opacity: 1;
        }
        .portfolio-item:hover .portfolio-img {
            transform: scale(1.05);
        }
        .team-card {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            transition: all 0.3s;
        }
        .team-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        .team-img {
            height: 250px;
            object-fit: cover;
        }
        .contact-form .form-control {
            padding: 15px;
            border-radius: 5px;
            border: 1px solid #ddd;
            margin-bottom: 20px;
        }
        .contact-form .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.25rem rgba(42, 110, 63, 0.25);
        }
        .footer {
            background-color: #222;
            color: #ddd;
            padding: 70px 0 20px;
        }
        .footer-title {
            color: white;
            font-size: 1.2rem;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-title:after {
            content: '';
            position: absolute;
            width: 50px;
            height: 2px;
            background-color: var(--secondary-color);
            bottom: 0;
            left: 0;
        }
        .footer-links a {
            color: #aaa;
            text-decoration: none;
            display: block;
            margin-bottom: 10px;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: var(--secondary-color);
            padding-left: 5px;
        }
        .copyright {
            border-top: 1px solid #444;
            padding-top: 20px;
            margin-top: 50px;
            text-align: center;
            color: #aaa;
            font-size: 0.9rem;
        }
        .friendlink {
            padding: 60px 0;
            background-color: #f9f9f9;
        }
        .flink {
            display: inline-block;
            padding: 8px 20px;
            margin: 5px 10px;
            background-color: white;
            border-radius: 5px;
            text-decoration: none;
            color: #333;
            border: 1px solid #ddd;
            transition: all 0.3s;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
            .hero-subtitle {
                font-size: 1.2rem;
            }
            .navbar-nav {
                text-align: center;
                padding-top: 15px;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s, transform 0.8s;
        }
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .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 3px 10px rgba(0, 0, 0, 0.2);
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background-color: #1f5230;
            transform: translateY(-5px);
        }