:root{--fg:#111;--muted:#6b7280;--line:#e5e7eb;--bg:#fff;--soft:#f6f7f9}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
.wrap{max-width:920px;margin:0 auto;padding:0 16px}
nav{border-bottom:1px solid var(--line);position:sticky;top:0;background:#fff;z-index:9}
nav .wrap{display:flex;gap:18px;align-items:center;padding:12px 16px;overflow-x:auto}
nav b{font-size:16px;white-space:nowrap}
nav a{color:var(--muted);text-decoration:none;font-size:14px;white-space:nowrap}
nav a.on{color:var(--fg);font-weight:600}
h1{font-size:22px;margin:22px 0 6px;letter-spacing:-.02em}
p.lead{color:var(--muted);margin:0 0 16px;font-size:14px}
.chips{display:flex;gap:8px;overflow-x:auto;padding:4px 0 12px;-webkit-overflow-scrolling:touch}
.chip{border:1px solid var(--line);border-radius:999px;padding:6px 12px;font-size:13px;white-space:nowrap;background:#fff;color:var(--fg)}
.chip.on{background:var(--fg);color:#fff;border-color:var(--fg)}
.grid{display:grid;grid-template-columns:1fr;gap:10px}
@media(min-width:640px){.grid{grid-template-columns:1fr 1fr}}
.card{border:1px solid var(--line);border-radius:12px;padding:14px}
.card .name{font-weight:600;font-size:15px;line-height:1.35}
.meta{color:var(--muted);font-size:13px;margin-top:4px}
.price{font-size:19px;font-weight:700;margin-top:8px;font-variant-numeric:tabular-nums}
.price small{font-weight:400;color:var(--muted);font-size:12px;margin-left:4px}
.ask{color:#b45309}
.btn{display:inline-block;background:var(--fg);color:#fff;text-decoration:none;padding:11px 16px;border-radius:10px;font-weight:600;font-size:15px;border:0;cursor:pointer}
.btn.ghost{background:#fff;color:var(--fg);border:1px solid var(--line)}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
label{display:block;font-size:13px;color:var(--muted);margin:14px 0 6px}
input,select,textarea{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:10px;font-size:15px;font-family:inherit;background:#fff}
.hint{color:var(--muted);font-size:12px;margin-top:6px}
.badge{display:inline-block;font-size:12px;border:1px solid var(--line);border-radius:6px;padding:1px 6px;color:var(--muted)}
.big{font-size:26px;font-weight:700;font-variant-numeric:tabular-nums}
.ok{border:1px solid #a7f3d0;background:#ecfdf5;border-radius:12px;padding:14px;color:#047857;font-size:14px}
footer{border-top:1px solid var(--line);margin-top:36px;padding:20px 0 40px;color:var(--muted);font-size:12px}