:root {
            --primary: #2a6e3f;
            --primary-dark: #1e4f2d;
            --primary-light: #e8f5e9;
            --secondary: #0d6efd;
            --accent: #ffc107;
            --dark: #212529;
            --light: #f8f9fa;
            --gray: #6c757d;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            line-height: 1.6;
            color: var(--dark);
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--primary-dark);
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.98);
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
            padding-top: 0.8rem;
            padding-bottom: 0.8rem;
            transition: var(--transition);
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary) !important;
        }
        .navbar-brand span {
            color: var(--accent);
        }
        .nav-link {
            font-weight: 500;
            margin: 0 0.5rem;
            color: var(--dark) !important;
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary) !important;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0.5rem;
            right: 0.5rem;
            height: 2px;
            background-color: var(--primary);
        }
        .hero-section {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1542601906990-b4d3fb778b09?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat;
            color: white;
            padding: 8rem 0 6rem;
            min-height: 90vh;
            display: flex;
            align-items: center;
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
        }
        .hero-subtitle {
            font-size: 1.3rem;
            margin-bottom: 2.5rem;
            max-width: 700px;
        }
        .btn-primary-custom {
            background-color: var(--primary);
            border-color: var(--primary);
            color: white;
            padding: 0.8rem 2rem;
            font-weight: 600;
            border-radius: 50px;
            transition: var(--transition);
        }
        .btn-primary-custom:hover {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
        }
        .section-padding {
            padding: 5rem 0;
        }
        .section-title {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -10px;
            width: 60px;
            height: 4px;
            background-color: var(--primary);
        }
        .section-subtitle {
            color: var(--gray);
            font-size: 1.1rem;
            max-width: 700px;
            margin: 0 auto 3rem;
        }
        .card-hover {
            transition: var(--transition);
            height: 100%;
            border: none;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
        }
        .card-hover:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        .card-icon {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 1.5rem;
        }
        .bg-light-custom {
            background-color: var(--primary-light) !important;
        }
        .process-step {
            position: relative;
            padding-left: 3rem;
            margin-bottom: 2.5rem;
        }
        .process-step-number {
            position: absolute;
            left: 0;
            top: 0;
            width: 2.5rem;
            height: 2.5rem;
            background-color: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }
        .stat-label {
            font-size: 1.1rem;
            color: var(--gray);
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .project-card {
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 2rem;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
            transition: var(--transition);
        }
        .project-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
        }
        .project-img {
            height: 250px;
            object-fit: cover;
            width: 100%;
        }
        .news-card {
            border-left: 4px solid var(--primary);
            padding-left: 1.5rem;
            margin-bottom: 2rem;
        }
        .news-date {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 0.5rem;
        }
        .contact-info-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 1.5rem;
        }
        .contact-icon {
            background-color: var(--primary-light);
            color: var(--primary);
            width: 3rem;
            height: 3rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 1rem;
            flex-shrink: 0;
        }
        .flink {
            display: inline-block;
            background-color: white;
            padding: 0.8rem 1.5rem;
            border-radius: 8px;
            margin: 0.5rem;
            color: var(--dark);
            text-decoration: none;
            border: 1px solid #eee;
            transition: var(--transition);
            font-weight: 500;
        }
        .flink:hover {
            background-color: var(--primary);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .footer {
            background-color: var(--dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 4rem 0 2rem;
        }
        .footer a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            transition: var(--transition);
        }
        .footer a:hover {
            color: white;
            padding-left: 5px;
        }
        .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);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background-color: var(--primary-dark);
            color: white;
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
            .hero-subtitle {
                font-size: 1.1rem;
            }
            .section-padding {
                padding: 3rem 0;
            }
            .section-title {
                font-size: 2rem;
            }
            .stat-number {
                font-size: 2.5rem;
            }
        }