:root{--bg:#f5f7fa;--card:#fff;--ink:#111827;--muted:#6b7280;--border:#e5e7eb;--gold:#c79a38;--green:#168654}
*{box-sizing:border-box}body{margin:0;font-family:Arial,Tahoma,sans-serif;background:var(--bg);color:var(--ink)}
a{text-decoration:none;color:inherit}.wrap{max-width:1200px;margin:auto;padding:18px}.topbar{background:#111827;color:#fff}.nav{display:flex;gap:18px;align-items:center}.brand{font-size:24px;font-weight:900}.spacer{flex:1}
.card{background:#fff;border:1px solid var(--border);border-radius:18px;padding:18px;margin:16px 0}.title{margin:0 0 8px}.muted{color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px}
.field{margin:14px 0}.field label{display:block;font-weight:800;margin-bottom:7px}.field input,.field select,.field textarea{width:100%;padding:12px;border:1px solid #d1d5db;border-radius:10px;font-size:16px;background:#fff}
.btn{display:inline-block;border:0;border-radius:10px;padding:11px 16px;background:#111827;color:#fff;cursor:pointer}.btn.gold{background:var(--gold)}.btn.green{background:var(--green)}.btn.light{background:#f3f4f6;color:#111827}.error{background:#fee2e2;color:#991b1b;padding:12px;border-radius:10px;margin:10px 0}.success{background:#dcfce7;color:#166534;padding:12px;border-radius:10px}.stat{font-size:28px;font-weight:900}.bid{padding:12px 0;border-bottom:1px solid #eee}