:root { --primary-blue: #0052
cc; --dark-gray: #333; --light-bg: #f4f7f9
; --text-color: #2c3e50; }
        * { box-sizing: border-box; margin:
 0; padding: 0; }
        body { font-family: 'Segoe UI', Roboto, sans-serif; line
-height: 1.6; color: var(--text-color); background: #fff; }
        .
container { max-width: 1200px; margin: 0 auto; padding: 0 
20px; }
        header { padding: 20px 0; background: #fff; border-bottom: 
1px solid #eee; }
        .nav-inner { display: flex; align-items: center; justify-content: space
-between; }
        .nav-links { display: flex; gap: 0; }
        .
nav-links a { padding: 10px 15px; color: var(--dark-gray); text-decoration
: none; font-weight: 500; }
        .hero { padding: 80px 0; background
: linear-gradient(135deg, #e0e9ff 0%, #f9fbf
d 100%); text-align: center; }
        .hero h1 { font-size: 3
rem; margin-bottom: 20px; color: var(--primary-blue); }
        .btn
 { display: inline-block; padding: 12px 30px; background: var(--primary-
blue); color: #fff; border-radius: 5px; text-decoration: none; transition: 
0.3s; }
        .section { padding: 60px 0; }
        .grid
 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1
fr)); gap: 30px; }
        .card { padding: 25px; border: 1
px solid #e1e1e1; border-radius: 10px; transition: 0.3s; }

        .card:hover { box-shadow: 0 10px 20px rgba(0,
0,0,0.1); transform: translateY(-5px); }
        .faq-item { margin
-bottom: 15px; border-bottom: 1px solid #eee; padding-bottom: 10px
; }
        table { width: 100%; border-collapse: collapse; margin: 20px 0
; }
        th, td { border: 1px solid #ddd; padding: 12px; text-align:
 left; }
        footer { background: var(--dark-gray); color: #fff; padding: 40px 
0; text-align: center; }
        .floating-kefu { position: fixed; right: 20px;
 bottom: 50px; z-index: 1000; }