:root { --primary: #e63946; --dark
: #1d3557; --light: #f8f9fa; --accent: #ffb
703; }
        * { box-sizing: border-box; margin: 0; padding: 0
; }
        body { font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif; line
-height: 1.6; color: #333; background: #fff; }
        .container { max
-width: 1200px; margin: 0 auto; padding: 0 20px
; }
        header { background: #fff; padding: 15px 0; border-bottom: 1px solid
 #eee; position: sticky; top: 0; z-index: 1000; }

        .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(--dark); font-weight: 500; font-size: 14px; }
        
.hero { padding: 80px 0; text-align: center; background: linear-gradient(1
35deg, #fff 0%, #fff5f5 100%); }
        h1 { font
-size: 3rem; color: var(--dark); margin-bottom: 20px; }

        .btn { display: inline-block; padding: 12px 30px; background: var(--
primary); color: #fff; border-radius: 5px; text-decoration: none; font-weight: bold
; margin: 10px; transition: 0.3s; }
        .btn:hover { background:
 #d62828; transform: translateY(-2px); }
        section { padding: 6
0px 0; }
        .grid-4 { display: grid; grid-template-columns: repeat(auto
-fit, minmax(250px, 1fr)); gap: 20px; }
        .card {
 padding: 30px; border: 1px solid #eee; border-radius: 10px; background:
 #fff; transition: 0.3s; }
        .card:hover { box-shadow: 0 
10px 20px rgba(0,0,0,0.05); }
        table
 { width: 100%; border-collapse: collapse; margin: 20px 0; }
        th,
 td { padding: 12px; border: 1px solid #eee; text-align: center;
 }
        .faq-item { margin-bottom: 15px; border-bottom: 1px solid #eee
; padding-bottom: 10px; }
        footer { background: var(--dark); color: #
fff; padding: 40px 0; text-align: center; }
        .footer-links a { color:
 #fff; margin: 0 10px; text-decoration: none; }
        .floating-kf
 { position: fixed; right: 20px; bottom: 50px; z-index: 9
99; }