:root {
            --primary-green: #2a8a5c;
            --secondary-green: #3bb78f;
            --accent-brown: #8b7355;
            --light-bg: #f8f9fa;
            --dark-text: #333333;
        }
        body {
            font-family: "Microsoft YaHei", "Segoe UI", sans-serif;
            color: var(--dark-text);
            line-height: 1.8;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--primary-green);
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            padding: 1rem 0;
            transition: all 0.3s ease;
        }
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-green) !important;
        }
        .navbar-brand span {
            color: var(--accent-brown);
        }
        .nav-link {
            font-weight: 600;
            color: var(--dark-text) !important;
            margin: 0 0.5rem;
            transition: color 0.3s;
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-green) !important;
        }
        .nav-link:hover::after {
            width: 80%;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 5px;
            left: 10%;
            width: 0;
            height: 2px;
            background: var(--secondary-green);
            transition: width 0.3s;
        }
        .hero-section {
            background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.5)), url('https://images.unsplash.com/photo-1549318061-6b7f2c4a75df?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat;
            color: white;
            padding: 10rem 0;
            text-align: center;
        }
        .hero-section h1 {
            color: white;
            font-size: 3.5rem;
            text-shadow: 2px 2px 8px rgba(0,0,0,0.5);
            margin-bottom: 1.5rem;
        }
        .section-padding {
            padding: 5rem 0;
        }
        .section-title {
            position: relative;
            margin-bottom: 3rem;
            text-align: center;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--secondary-green);
            border-radius: 2px;
        }
        .card {
            border: none;
            border-radius: 15px;
            overflow: hidden;
            transition: transform 0.4s, box-shadow 0.4s;
            height: 100%;
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        }
        .card:hover {
            transform: translateY(-15px);
            box-shadow: 0 20px 30px rgba(0,0,0,0.1);
        }
        .card-img-top {
            height: 220px;
            object-fit: cover;
            transition: transform 0.5s;
        }
        .card:hover .card-img-top {
            transform: scale(1.05);
        }
        .icon-box {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--primary-green), var(--secondary-green));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: white;
            font-size: 2rem;
        }
        .bg-light-green {
            background-color: #f0f9f5;
        }
        .feature-item {
            padding: 2rem;
            border-radius: 15px;
            transition: all 0.3s;
        }
        .feature-item:hover {
            background-color: white;
            box-shadow: 0 15px 30px rgba(0,0,0,0.08);
        }
        .timeline {
            position: relative;
            max-width: 1200px;
            margin: 0 auto;
        }
        .timeline::after {
            content: '';
            position: absolute;
            width: 6px;
            background-color: var(--secondary-green);
            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: 20px 30px;
            background-color: white;
            position: relative;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
        }
        .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 5px 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 5px rgba(0,0,0,0.2);
        }
        .contact-info-box {
            background: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            transition: transform 0.3s;
            height: 100%;
        }
        .contact-info-box:hover {
            transform: translateY(-10px);
        }
        .contact-icon {
            font-size: 2.5rem;
            color: var(--primary-green);
            margin-bottom: 1.5rem;
        }
        footer {
            background-color: #222;
            color: #ddd;
            padding-top: 3rem;
        }
        .footer-links a {
            color: #bbb;
            text-decoration: none;
            transition: color 0.3s;
            display: block;
            margin-bottom: 0.8rem;
        }
        .footer-links a:hover {
            color: var(--secondary-green);
            padding-left: 5px;
        }
        .friendlink {
            background-color: #2a2a2a;
            padding: 2rem 0;
            border-top: 1px solid #444;
        }
        .flink {
            display: inline-block;
            background: #333;
            color: #ccc;
            padding: 0.5rem 1.5rem;
            margin: 0.5rem;
            border-radius: 30px;
            text-decoration: none;
            transition: all 0.3s;
            border: 1px solid #555;
        }
        .flink:hover {
            background: var(--primary-green);
            color: white;
            transform: scale(1.05);
            border-color: var(--primary-green);
        }
        .copyright {
            background-color: #111;
            padding: 1.5rem 0;
            font-size: 0.9rem;
            color: #888;
        }
        .btn-primary-custom {
            background: linear-gradient(to right, var(--primary-green), var(--secondary-green));
            border: none;
            color: white;
            padding: 0.8rem 2rem;
            border-radius: 30px;
            font-weight: 600;
            transition: all 0.3s;
            box-shadow: 0 5px 15px rgba(42, 138, 92, 0.3);
        }
        .btn-primary-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(42, 138, 92, 0.4);
            color: white;
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .section-padding {
                padding: 3rem 0;
            }
            .timeline::after {
                left: 31px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
            }
            .timeline-item:nth-child(even) {
                left: 0;
            }
        }