:root { --primary: #ff4757; --
accent: #2f3542; --bg: #ffffff; --text: #333;
 --light: #f8f9fa; }
        * { margin: 0; padding: 0; box-
sizing: border-box; }
        body { font-family: 'PingFang SC', 'Microsoft YaHei', sans
-serif; line-height: 1.6; color: var(--text); background: var(--bg); }
        
.container { max-width: 1200px; margin: 0 auto; padding: 0
 20px; }
        header { padding: 20px 0; background: #fff; position
: sticky; top: 0; z-index: 1000; box-shadow: 0 
2px 10px rgba(0,0,0,0.05); }
        .nav-inner
 { display: flex; align-items: center; justify-content: space-between; }
        .nav-links { display
: flex; gap: 0; align-items: center; }
        .nav-links a { padding
: 10px 15px; text-decoration: none; color: var(--accent); font-weight: 
600; font-size: 14px; transition: color 0.3s; }
        .hero {
 padding: 100px 0; background: linear-gradient(135deg, #ff4757 0
%, #70a1ff 100%); color: #fff; text-align: center; }

        .hero h1 { font-size: 3rem; margin-bottom: 20px; }

        .btn-main { display: inline-block; padding: 15px 30px; background:
 #fff; color: var(--primary); border-radius: 50px; text-decoration: none; font-weight
: bold; margin-top: 20px; transition: transform 0.3s; }
        
section { padding: 80px 0; }
        .grid-3 { display: grid; grid
-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 
30px; }
        .card { padding: 30px; border-radius: 15px; background
: var(--light); transition: 0.3s; }
        .card:hover { transform: translateY(-1
0px); box-shadow: 0 20px 30px rgba(0,0,0,0.1);
 }
        footer { background: var(--accent); color: #fff; padding: 50px 0; text
-align: center; }
        .faq-item { margin-bottom: 15px; border:
 1px solid #ddd; padding: 15px; cursor: pointer; border-radius: 8
px; }
        table { width: 100%; border-collapse: collapse; margin-top: 20px;
 }
        th, td { padding: 15px; border: 1px solid #ddd; text-align: center;
 }
        form { display: flex; flex-direction: column; gap: 15px; max-width:
 500px; margin: 0 auto; }
        input, select, textarea { padding: 1
2px; border: 1px solid #ddd; border-radius: 5px; }
        .
hidden { display: none; }