:
root { --primary-color: #ff6a00; --text-color: #333; --bg-color
: #ffffff; --light-bg: #fff5eb; }
        * { box-sizing: border
-box; margin: 0; padding: 0; }
        body { font-family: 'PingFang SC',
 'Microsoft YaHei', sans-serif; color: var(--text-color); line-height: 1.
6; background-color: var(--bg-color); }
        .container { max-width: 1
200px; 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-wrapper { display:
 flex; justify-content: space-between; align-items: center; }
        .nav-links { display: flex; gap
: 0; }
        .nav-links a { padding: 10px 15px; color:
 #333; text-decoration: none; font-weight: 500; }
        .btn
-primary { background: var(--primary-color); color: #fff; padding: 10px 25
px; border-radius: 5px; text-decoration: none; transition: 0.3s;
 }
        .hero { padding: 80px 0; text-align: center; background: var(--light-bg
); }
        .hero h1 { font-size: 3rem; margin-bottom: 20px; color:
 #000; }
        .section-title { text-align: center; margin: 60px 0 
40px; font-size: 2rem; }
        .grid { display: grid; grid-template-columns: repeat
(auto-fit, minmax(300px, 1fr)); gap: 30px; }

        .card { padding: 30px; border: 1px solid #eee; border-radius: 1
5px; transition: 0.3s; background: #fff; }
        .card:hover {
 box-shadow: 0 10px 30px rgba(0,0,0,0.
1); transform: translateY(-5px); }
        footer { background: #222; color: #
ccc; padding: 40px 0; text-align: center; }
        .float-k
efu { position: fixed; right: 20px; bottom: 50px; z-index: 9
99; }
        table { width: 100%; border-collapse: collapse; margin: 20
px 0; }
        th, td { padding: 15px; border: 1px solid
 #eee; text-align: left; }