:root {
            --primary-color: #1a6b3c;
            --secondary-color: #0d4d2a;
            --accent-color: #4caf50;
            --light-bg: #f8f9fa;
            --dark-text: #333;
            --light-text: #666;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Microsoft YaHei', 'Segoe UI', sans-serif;
            color: var(--dark-text);
            line-height: 1.7;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5 {
            color: var(--secondary-color);
            font-weight: 600;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .navbar-brand span {
            color: var(--accent-color);
        }
        .hero-section {
            background: linear-gradient(rgba(26, 107, 60, 0.85), rgba(13, 77, 42, 0.9)), url('https://images.unsplash.com/photo-1558618666-fcd25c85cd64?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat;
            color: white;
            padding: 120px 0;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 50px;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 4px;
            background-color: var(--accent-color);
        }
        .section-title.center::after {
            left: 50%;
            transform: translateX(-50%);
        }
        .card {
            border: none;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.08);
            transition: var(--transition);
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.15);
        }
        .icon-box {
            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 20px;
            color: white;
            font-size: 2rem;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 12px 30px;
            border-radius: 30px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-primary:hover {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            transform: scale(1.05);
        }
        .service-card {
            border-top: 4px solid var(--accent-color);
        }
        .flink {
            display: inline-block;
            padding: 8px 20px;
            margin: 5px;
            background-color: #f0f7f2;
            border-radius: 30px;
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
            border: 1px solid #d4e8d9;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-3px);
        }
        .contact-info li {
            margin-bottom: 15px;
            display: flex;
            align-items: center;
        }
        .contact-info i {
            color: var(--primary-color);
            margin-right: 15px;
            font-size: 1.2rem;
            width: 30px;
        }
        .stats-box {
            text-align: center;
            padding: 30px 15px;
            background-color: white;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .stats-number {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--primary-color);
            display: block;
            line-height: 1;
        }
        footer {
            background-color: #1e3a2c;
            color: #ccc;
        }
        footer a {
            color: #b8d4c3;
            text-decoration: none;
            transition: var(--transition);
        }
        footer a:hover {
            color: white;
            padding-left: 5px;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 80px 0;
                text-align: center;
            }
            .hero-section h1 {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }
        .news-item {
            border-left: 3px solid var(--accent-color);
            padding-left: 20px;
            margin-bottom: 25px;
        }
        .news-date {
            color: var(--primary-color);
            font-weight: 600;
        }
        .process-step {
            position: relative;
            padding-left: 40px;
            margin-bottom: 30px;
        }
        .process-step::before {
            content: '';
            position: absolute;
            left: 0;
            top: 5px;
            width: 25px;
            height: 25px;
            background-color: var(--accent-color);
            border-radius: 50%;
        }
        .project-card img {
            transition: var(--transition);
        }
        .project-card:hover img {
            transform: scale(1.05);
        }
        .cert-badge {
            display: inline-block;
            background-color: #e8f5e9;
            color: var(--primary-color);
            padding: 5px 15px;
            border-radius: 20px;
            margin: 5px;
            font-size: 0.9rem;
        }