:root{--bg:#f5f6f8;--card:#fff;--fg:#14171c;--muted:#5d6572;--line:#e2e5ea;--accent:#1f6feb;--bad:#cf222e}@media(prefers-color-scheme:dark){:root{--bg:#0d1014;--card:#161a20;--fg:#e8ebef;--muted:#8b94a1;--line:#262c35;--accent:#4c8dff;--bad:#f85149}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.4 system-ui,-apple-system,Segoe UI,sans-serif}.center{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:16px}.shell{max-width:960px;margin:0 auto;padding:16px}header{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:12px}.grow{flex:1;min-width:0;overflow-wrap:anywhere}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px;width:100%}.card p{overflow-wrap:anywhere}form.card{max-width:360px}h1{font-size:18px;margin:0 0 12px}label{display:block;font-size:14px;color:var(--muted);margin:10px 0}input{display:block;width:100%;margin-top:4px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--fg);font-size:16px}button{border:0;border-radius:10px;padding:10px 14px;font-size:15px;cursor:pointer;background:var(--line);color:var(--fg)}button:disabled{opacity:.5;cursor:default}.primary{background:var(--accent);color:#fff;width:100%;margin-top:8px}.link{background:none;color:var(--muted);text-decoration:underline}.muted{color:var(--muted);font-size:14px}.error{color:var(--bad);font-size:14px}.footer{text-align:center;margin-top:16px;font-size:12px}