:root{
  --bg:#ffffff;
  --text:#111827;
  --muted:#6b7280;
  --border:#e5e7eb;
  --panel:#f9fafb;
  --link:#1d4ed8;
  --linkHover:#1e40af;
  --chip:#eef2ff;
  --danger:#b91c1c;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline;color:var(--linkHover)}
.container{max-width:1100px;margin:0 auto;padding:16px}
.header{border-bottom:1px solid var(--border);background:#fff;position:sticky;top:0;z-index:10}
.brand{display:flex;align-items:center;gap:10px}
.brand .logo{width:34px;height:34px;border:1px solid var(--border);border-radius:8px;display:grid;place-items:center;background:var(--panel);font-weight:700}
.brand h1{font-size:18px;margin:0}
.nav{display:flex;gap:14px;flex-wrap:wrap;align-items:center;justify-content:space-between;padding:10px 0}
.navlinks{display:flex;gap:12px;flex-wrap:wrap}
.navlinks a{padding:6px 10px;border-radius:8px}
.navlinks a.active, .navlinks a:hover{background:var(--panel);text-decoration:none}
.subtle{color:var(--muted);font-size:13px}
.grid{display:grid;gap:16px}
.grid-2{grid-template-columns:1fr}
@media (min-width:900px){.grid-2{grid-template-columns: 300px 1fr}}

.card{border:1px solid var(--border);border-radius:12px;background:#fff}
.card .card-h{padding:12px 12px 0 12px}
.card .card-b{padding:12px}
.card .card-f{padding:12px;border-top:1px solid var(--border);background:var(--panel);border-radius:0 0 12px 12px}
.h2{margin:0;font-size:18px}
.h3{margin:0;font-size:15px}
.hr{height:1px;background:var(--border);margin:12px 0}

.searchbar{display:grid;grid-template-columns:1fr;gap:10px}
@media (min-width:700px){.searchbar{grid-template-columns: 1.4fr 1fr 0.7fr auto}}
input, select, textarea{
  width:100%;
  border:1px solid var(--border);
  border-radius:10px;
  padding:10px 12px;
  font-size:14px;
  background:#fff;
}
textarea{min-height:120px;resize:vertical}
.btn{
  border:1px solid var(--border);
  background:var(--panel);
  border-radius:10px;
  padding:10px 14px;
  font-size:14px;
  cursor:pointer;
}
.btn.primary{background:var(--link);color:#fff;border-color:var(--link)}
.btn.primary:hover{background:var(--linkHover)}
.btn.danger{background:#fff;border-color:#fecaca;color:var(--danger)}
.btn.danger:hover{background:#fef2f2}
.btn:disabled{opacity:0.6;cursor:not-allowed}

.category-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
@media (min-width:700px){.category-grid{grid-template-columns:repeat(4,1fr)}}
.cat{border:1px solid var(--border);background:var(--panel);border-radius:12px;padding:12px}
.cat .t{font-weight:600}
.cat .d{color:var(--muted);font-size:12px;margin-top:4px}

.listings{display:flex;flex-direction:column;gap:10px}
.row{
  display:grid;
  grid-template-columns: 1fr;
  gap:6px;
  padding:10px 12px;
  border:1px solid var(--border);
  border-radius:12px;
}
@media (min-width:700px){
  .row{grid-template-columns: 1.2fr 0.7fr 0.6fr 0.5fr; align-items:center}
}
.row:hover{background:var(--panel)}
.price{font-weight:700}
.meta{color:var(--muted);font-size:12px}
.chips{display:flex;gap:6px;flex-wrap:wrap;margin-top:6px}
.chip{background:var(--chip);border:1px solid #c7d2fe;border-radius:999px;padding:3px 8px;font-size:12px;color:#3730a3}

.kv{display:grid;grid-template-columns: 150px 1fr;gap:10px}
.kv div{padding:6px 0;border-bottom:1px dashed var(--border)}
.kv .k{color:var(--muted)}
.footer{margin-top:24px;padding:18px 0;border-top:1px solid var(--border);color:var(--muted);font-size:13px}
.small{font-size:12px;color:var(--muted)}
.notice{background:var(--panel);border:1px solid var(--border);padding:10px 12px;border-radius:12px}