:root{--bg:#f5f7fb;--surface:#fff;--text:#3f4254;--muted:#6b7088;--border:#e2e5ee;--brand:#0094ff;--brand-ink:#fff;--danger:#c62828;--ok:#1b7f4b;--warn:#9a6400;--radius:12px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif}@media (prefers-color-scheme:dark){:root{--bg:#0a0f1e;--surface:#121a2e;--text:#e6eaf2;--muted:#9aa3b8;--border:#243049;--danger:#ff8a80;--ok:#5fd39a;--warn:#f2c14e;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0}.center{flex-direction:column;justify-content:center;align-items:center;gap:24px;min-height:100vh;padding:16px;display:flex}.brand{align-items:center;gap:10px;font-weight:600;display:flex}.brand.big{font-size:22px}.mark{width:30px;height:30px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);flex-direction:column;gap:16px;width:100%;max-width:380px;padding:24px;display:flex}.card.wide{max-width:880px}h1{margin:0;font-size:20px}h2{margin:8px 0 0;font-size:15px}label{flex-direction:column;gap:6px;font-size:14px;display:flex}input{font:inherit;border:1px solid var(--border);background:var(--bg);min-height:48px;color:var(--text);border-radius:8px;padding:12px}input:focus-visible,button:focus-visible{outline:2px solid var(--brand);outline-offset:2px}input.code{font-variant-numeric:tabular-nums;letter-spacing:.3em;text-align:center;font-family:JetBrains Mono,ui-monospace,monospace;font-size:22px}button{font:inherit;background:var(--brand);min-height:48px;color:var(--brand-ink);cursor:pointer;border:0;border-radius:8px;font-weight:600}button:disabled{opacity:.6;cursor:default}button.secondary{color:var(--text);border:1px solid var(--border);background:0 0;padding:0 16px}button.link{color:var(--brand);background:0 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var(--danger);color:var(--danger);border-radius:8px;padding:10px 14px;font-size:14px}.alert p{margin:0}.alert.info{border-color:var(--brand);color:var(--text);margin:0}.alert ul{margin:8px 0 0;padding-left:18px}.dialog{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text);width:min(520px,100vw - 32px);padding:24px}.dialog::backdrop{background:#0a0f1e8c}.dialog form{flex-direction:column;gap:14px;display:flex}.dialog p{margin:0}label.check{flex-direction:row;align-items:flex-start;gap:10px}label.check input{min-height:0;margin-top:3px}.row-form{flex-wrap:wrap;align-items:flex-end;gap:12px;display:flex}.row-form button{padding:0 20px}form.inline{align-items:center;gap:6px;display:flex}form.inline input{width:220px;min-height:34px;padding:6px 8px}.columns{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;display:grid}ul.plain,ol.plain{flex-direction:column;gap:4px;margin:8px 0 0;padding-left:18px;font-size:14px;display:flex}.spark polyline{stroke:var(--brand)}.spark.up polyline{stroke:var(--ok)}.spark.down polyline{stroke:var(--danger)}.dialog--wide{width:min(760px,100vw - 32px)}.preview{border:1px solid var(--border);background:radial-gradient(at 50% 45%,#0094ff1f,#0000 70%),#0a0f1e;border-radius:12px;height:420px;margin-block:12px}.preview-canvas{width:100%;height:100%}.row-actions{gap:6px;display:flex}