:root {
            --primary-color: #1a5f23;
            --secondary-color: #d4af37;
            --accent-color: #2c8c47;
            --light-bg: #f8f9fa;
            --dark-text: #333333;
            --transition: all 0.3s ease;
        }
        body {
            font-family: "Microsoft YaHei", "Segoe UI", sans-serif;
            color: var(--dark-text);
            overflow-x: hidden;
        }
        .hero-section {
            background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://images.unsplash.com/photo-1544551763-46a013bb70d5?ixlib=rb-4.0.3&auto=format&fit=crop&w=1950&q=80') no-repeat center center/cover;
            color: white;
            padding: 180px 0 120px;
            position: relative;
        }
        .navbar {
            background-color: rgba(255,255,255,0.95);
            box-shadow: 0 4px 12px rgba(0,0,0,0.08);
            transition: var(--transition);
            padding: 15px 0;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .nav-link {
            color: #555 !important;
            font-weight: 500;
            margin: 0 8px;
            transition: var(--transition);
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-color) !important;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 12px 30px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-primary:hover {
            background-color: var(--accent-color);
            border-color: var(--accent-color);
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(44,140,71,0.3);
        }
        .section-title {
            position: relative;
            padding-bottom: 20px;
            margin-bottom: 50px;
            text-align: center;
        }
        .section-title::after {
            content: '';
            position: absolute;
            width: 80px;
            height: 4px;
            background-color: var(--secondary-color);
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
        }
        .feature-card {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            transition: var(--transition);
            height: 100%;
            border: 1px solid #eee;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.15);
        }
        .feature-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            color: white;
            font-size: 32px;
        }
        .project-card {
            border-radius: 12px;
            overflow: hidden;
            position: relative;
            margin-bottom: 30px;
            height: 350px;
        }
        .project-card img {
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .project-card:hover img {
            transform: scale(1.05);
        }
        .project-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(transparent, rgba(0,0,0,0.8));
            padding: 30px 20px 20px;
            color: white;
            transform: translateY(20px);
            opacity: 0;
            transition: var(--transition);
        }
        .project-card:hover .project-overlay {
            transform: translateY(0);
            opacity: 1;
        }
        .news-card {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: var(--transition);
            height: 100%;
            border: 1px solid #eee;
        }
        .news-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .flink {
            display: inline-block;
            background-color: white;
            padding: 15px 25px;
            margin: 10px;
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
            transition: var(--transition);
            color: #555;
            font-weight: 500;
            text-decoration: none;
            border: 1px solid #eee;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            text-decoration: none;
        }
        .footer {
            background-color: #1a1a1a;
            color: #bbb;
            padding-top: 70px;
        }
        .footer a {
            color: #bbb;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer a:hover {
            color: white;
            text-decoration: underline;
        }
        .contact-info i {
            width: 40px;
            height: 40px;
            background-color: rgba(255,255,255,0.1);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-right: 15px;
        }
        .stat-item {
            text-align: center;
            padding: 30px 15px;
            background-color: white;
            border-radius: 12px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        .stat-item:hover {
            box-shadow: 0 12px 25px rgba(0,0,0,0.1);
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 10px;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 150px 0 80px;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .navbar-nav {
                text-align: center;
                padding-top: 15px;
            }
        }