*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:#1f2937;background:#f6f7f9;line-height:1.6;overflow-x:clip}
img,video,iframe{max-width:100%;height:auto}
a{color:#2563eb;text-decoration:none;overflow-wrap:anywhere}.wrap{max-width:1060px;margin:0 auto;padding:0 20px}
header{background:#111827;color:#fff}header a{color:#e5e7eb}.nav{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;padding:16px 20px}
.logo{font-size:22px;font-weight:800;color:#fff}.logo span{font-size:12px;color:#9ca3af;font-weight:400}nav{display:flex;flex-wrap:wrap;gap:4px 16px;align-items:center}nav a{margin-left:0}
main{padding:28px 20px 60px}.flash{background:#fef3c7;border:1px solid #f59e0b;padding:10px 16px;border-radius:10px}
h1{font-size:32px;line-height:1.3;overflow-wrap:anywhere}h2{margin-top:36px}.card{background:#fff;border:1px solid #e5e7eb;border-radius:14px;padding:20px;margin:16px 0;min-width:0;overflow-wrap:anywhere}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}
.opt{border:2px solid #e5e7eb;border-radius:12px;padding:14px;cursor:pointer;background:#fff;min-width:0;touch-action:manipulation}.opt.selected{border-color:#2563eb;background:#eff6ff}
.opt.disabled{opacity:.5;cursor:not-allowed}.price{font-size:22px;font-weight:800}.muted{color:#6b7280}.small{font-size:13px}
label{display:block;margin:12px 0 4px;font-weight:600}input,select,textarea{width:100%;padding:10px;border:1px solid #d1d5db;border-radius:8px;font-size:16px;max-width:100%}
button,.btn{display:inline-block;background:#2563eb;color:#fff;border:0;padding:11px 18px;border-radius:9px;font-size:16px;cursor:pointer;min-height:44px;max-width:100%;touch-action:manipulation}
.btn.secondary{background:#e5e7eb;color:#111827}.btn.danger{background:#dc2626}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 -4px;padding:0 4px}
.table-wrap table{width:max-content;min-width:100%}
table{width:100%;border-collapse:collapse;background:#fff}
th,td{border-bottom:1px solid #e5e7eb;padding:10px;text-align:left}
th.nowrap,td.nowrap{white-space:nowrap}.tag{display:inline-block;background:#dbeafe;padding:2px 8px;border-radius:20px;font-size:12px;white-space:nowrap}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px}.step{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:16px;min-width:0}
details{background:#fff;border:1px solid #e5e7eb;border-radius:10px;padding:14px 18px;margin:10px 0}.total{font-size:26px;font-weight:800}
footer p{overflow-wrap:anywhere}
/* 手机与聊天软件内置浏览器：内置浏览器工具栏会伸缩、宽度常被系统栏吃掉，
   所以不用固定宽度和 100vw，全部用流式布局；输入框 16px 是为了不在 iOS 内置浏览器里
   一点输入框就自动放大页面；表格只在卡片里横向滚动，不把整页撑宽。 */
@media(max-width:720px){
  .wrap{padding:0 12px}main{padding:20px 12px 48px}header .wrap{padding:0 12px}
  .nav{padding:12px}.logo{font-size:20px}nav{gap:6px 12px}
  h1{font-size:26px}h2{font-size:20px;margin-top:28px}.card{padding:16px}
  .grid,.steps{grid-template-columns:1fr}
  input,select,textarea{font-size:16px}
  button,.btn{width:auto}
  form button{width:100%}
  table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;width:100%}
  .table-wrap table{display:table;width:max-content;min-width:100%}
  th,td{padding:8px;font-size:14px}
  .price{font-size:20px}.total{font-size:22px}
}
@media(max-width:480px){
  h1{font-size:24px}.card{padding:14px}nav a{font-size:14px}
}