:root{--red:#9B1C1C;--bg:#f5f6f7;--card:#fff;--text:#202124;--muted:#6b7280;--border:#e5e7eb}*{box-sizing:border-box}body,html{margin:0;padding:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}body.dark{--bg:#111827;--card:#1f2937;--text:#f3f4f6;--muted:#9ca3af;--border:#374151}a{color:inherit;text-decoration:none}.container{width:min(100% - 28px,1100px);margin:auto}.topbar{background:var(--red);color:#fff;padding:16px 0}.brand{font-weight:800;font-size:20px}.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:20px;box-shadow:0 4px 20px rgba(0,0,0,.05)}.grid{display:grid;grid-gap:16px;gap:16px}.grid2{grid-template-columns:repeat(2,minmax(0,1fr))}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:10px 16px;border-radius:10px;border:1px solid var(--border);background:var(--card);cursor:pointer;font-weight:700}.btn.primary{background:var(--red);color:#fff;border-color:var(--red)}.btn.danger{background:#7f1d1d;color:#fff;border-color:#7f1d1d}.input{width:100%;min-height:48px;border:1px solid var(--border);border-radius:10px;padding:10px 12px;background:var(--card);color:var(--text);font-size:16px}.label{display:block;font-weight:700;margin-bottom:7px}.muted{color:var(--muted)}.error{color:#b91c1c;background:#fee2e2}.error,.success{border-radius:10px;padding:10px}.success{color:#166534;background:#dcfce7}.row{display:flex;gap:10px;align-items:center;justify-content:space-between;flex-wrap:wrap}.spacer{height:24px}@media(max-width:700px){.grid2{grid-template-columns:1fr}.card{padding:16px}.topbar{padding:14px 0}}