:root { --primary-color: #2563eb; --text-color: #1f
2937; --bg-color: #ffffff; --accent-color: #f3f4f6; }

        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family
: 'PingFang SC', 'Microsoft YaHei', sans-serif; line-height: 1.6; color: var(--text
-color); background: var(--bg-color); }
        .container { max-width: 12
00px; margin: 0 auto; padding: 0 20px; }
        header {
 padding: 20px 0; border-bottom: 1px solid #e5e7eb; position: sticky;
 top: 0; background: rgba(255,255,255,0.95
); z-index: 100; }
        .nav-wrapper { display: flex; justify-content
: space-between; align-items: center; }
        .nav-links { display: flex; gap
: 0; align-items: center; }
        .nav-links a { padding: 10
px 15px; text-decoration: none; color: var(--text-color); font-weight: 500;
 }
        .hero { padding: 80px 0; text-align: center; background: linear
-gradient(135deg, #f0f7ff 0%, #ffffff 100%); }

        h1 { font-size: 3rem; margin-bottom: 20px; color: #1118
27; }
        .btn { display: inline-block; padding: 12px 30px;
 background: var(--primary-color); color: #fff; border-radius: 8px; text-decoration: none
; transition: transform 0.2s; }
        .btn:hover { transform: translateY(-2px
); }
        section { padding: 60px 0; }
        .grid { display: grid; grid
-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 3
0px; }
        .card { padding: 25px; border: 1px solid #e5
e7eb; border-radius: 12px; transition: 0.3s; }
        .card:hover
 { box-shadow: 0 10px 20px rgba(0,0,0,0.0
5); }
        table { width: 100%; border-collapse: collapse; margin: 20px 0
; }
        th, td { padding: 15px; border: 1px solid #e5e7eb; text
-align: left; }
        .faq-item { margin-bottom: 15px; border-bottom
: 1px solid #e5e7eb; }
        .faq-q { padding: 15
px; cursor: pointer; font-weight: 600; display: flex; justify-content: space-between; }

        .faq-a { padding: 0 15px 15px; display: none; }
        footer {
 padding: 40px 0; background: #1f2937; color: #fff; text-align:
 center; }
        .footer-links a { color: #d1d5db; margin: 0 10px;
 text-decoration: none; }