:
root { --primary: #ff4d4f; --dark: #1a1a1a; --
bg: #f8f9fa; --accent: #1890ff; }
        * {
 box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: '
PingFang SC', sans-serif; line-height: 1.6; color: #333; background:
 var(--bg); }
        .container { max-width: 1200px; margin: 
0 auto; padding: 0 20px; }
        header { background: #fff; padding: 15
px 0; 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
; list-style: none; }
        .nav-links a { padding: 10px 15px;
 text-decoration: none; color: #333; font-weight: 500; }
        .hero { padding
: 80px 0; text-align: center; background: linear-gradient(135deg, #fff
 0%, #f0f7ff 100%); }
        h1 { font-size: 3rem
; margin-bottom: 20px; color: var(--dark); }
        .btn { display: inline-block;
 padding: 12px 30px; background: var(--primary); color: #fff; border-radius: 50
px; text-decoration: none; transition: 0.3s; }
        .section { padding: 6
0px 0; }
        .grid { display: grid; grid-template-columns: repeat(auto-fit
, minmax(300px, 1fr)); gap: 30px; }
        .card { background: #
fff; padding: 30px; border-radius: 16px; box-shadow: 0
 4px 20px rgba(0,0,0,0.05); transition: 0.3s; }

        .card:hover { transform: translateY(-10px); }
        table { width: 100%; border
-collapse: collapse; margin-top: 20px; }
        th, td { padding: 1
5px; text-align: left; border-bottom: 1px solid #eee; }
        footer { background: var
(--dark); color: #fff; padding: 40px 0; text-align: center; }
        @
media (max-width: 768px) { .nav-links { display: none; } }