:root { --primary-color: #4a9e88; --bg-color: #f8fbfb; --text-dark: #2d3436; --text-light: #636e72; }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif; background: #fff; color: var(--text-dark); line-height: 1.6; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        header { padding: 20px 0; background: #fff; border-bottom: 1px solid #eee; position: sticky; top: 0; z-index: 1000; }
        .nav-container { display: flex; align-items: center; justify-content: space-between; }
        .logo-area { width: 150px; }
        .nav-links { display: flex; gap: 0; align-items: center; }
        .nav-links a { text-decoration: none; color: var(--text-dark); padding: 10px 15px; font-weight: 500; transition: 0.3s; }
        .hero { padding: 80px 0; text-align: center; background: linear-gradient(135deg, #eef9f5, #ffffff); }
        .hero h1 { font-size: 3rem; color: var(--primary-color); margin-bottom: 20px; }
        .btn { display: inline-block; padding: 12px 30px; background: var(--primary-color); color: #fff; border-radius: 8px; text-decoration: none; transition: 0.3s; }
        .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; margin: 40px 0; }
        .card { padding: 30px; border: 1px solid #eee; border-radius: 12px; transition: 0.3s; }
        .card:hover { box-shadow: 0 10px 20px rgba(0,0,0,0.05); transform: translateY(-5px); }
        footer { background: #2d3436; color: #fff; padding: 50px 0 20px; margin-top: 50px; }
        .footer-inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; }
        @media (max-width: 768px) { .nav-links { display: none; } .footer-inner { grid-template-columns: 1fr; } }