:root{--bg:#fafaf7;--fg:#1d1d1b;--muted:#6b6b66;--card:#fff;--line:#e3e2dc;--accent:#e3000b;--ok:#1f8a43;--bad:#c62820}@media (prefers-color-scheme:dark){:root{--bg:#151514;--fg:#f1f0ea;--muted:#a5a49c;--card:#202020;--line:#34342f}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.5 system-ui,sans-serif}main{max-width:760px;margin:0 auto;padding:32px 16px 64px}h1{margin:0 0 4px;font-size:2rem}h1 span{color:var(--accent)}.sub{color:var(--muted);margin:0 0 24px}.card,form{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px}label{display:block;font-weight:600;margin:12px 0 4px}input[type=number],input[type=text],input[type=url]{width:100%;padding:10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--fg);font:inherit}.row{display:flex;gap:16px;flex-wrap:wrap;margin-top:12px}.row,.row label{align-items:center}.row label{display:inline-flex;gap:6px;margin:0;font-weight:400}button{background:var(--accent);color:#fff;border:0;border-radius:8px;padding:10px 18px;font:inherit;font-weight:600;cursor:pointer}button:disabled{opacity:.6;cursor:wait}.cards{display:grid;grid-gap:16px;gap:16px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));margin-top:24px}.card h2{font-size:1rem;margin:0 0 8px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}.card img{width:100%;max-height:160px;object-fit:contain;border-radius:8px;background:#fff}.dims{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:8px;gap:8px;margin-top:8px}.dims label{font-size:.8rem;font-weight:400;margin:0}.dims label,.note{color:var(--muted)}.note{font-size:.85rem}.err{color:var(--bad)}.verdict{margin-top:24px;padding:20px;border-radius:12px;font-size:1.15rem;font-weight:600;border:2px solid}.verdict.ok{border-color:var(--ok);color:var(--ok)}.verdict.bad{border-color:var(--bad);color:var(--bad)}.viewer{height:420px;margin-top:16px;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:var(--card)}@media (max-width:480px){main{padding:20px 12px 48px}h1{font-size:1.6rem}.dims{gap:6px}.viewer{height:320px}.verdict{font-size:1rem;padding:16px}button{width:100%}}.foot{max-width:760px;margin:0 auto;padding:24px 16px 48px;color:var(--muted);font-size:.8rem;border-top:1px solid var(--line)}.foot a,main a{color:inherit;text-decoration:underline}main h2{font-size:1.1rem;margin:24px 0 4px}textarea{width:100%;padding:10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--fg);font:inherit;resize:vertical}button.secondary{background:transparent;color:var(--fg);border:1px solid var(--line);margin-top:8px}.alt{display:block;min-height:1.2em;font-size:.75rem}details.paste{margin-top:12px}details.paste summary{cursor:pointer;font-weight:600}