:root{--bg: #f6f6f3;--surface: #ffffff;--text: #1c1d1f;--muted: #6b6e73;--line: #e3e3de;--accent: #2f5d50;--accent-text: #ffffff;--danger: #b4372f;--banner: #f4d35e;font-family:-apple-system,BlinkMacSystemFont,Inter,Segoe UI,Roboto,sans-serif;color:var(--text);background:var(--bg)}@media (prefers-color-scheme: dark){:root{--bg: #141516;--surface: #1d1f21;--text: #ececea;--muted: #9a9da1;--line: #2d3033;--accent: #7fb8a4;--accent-text: #0f1a16;--danger: #e0786f}}*{box-sizing:border-box}body{margin:0;min-height:100vh}h1,h2{margin:0 0 8px;font-weight:600}.muted{color:var(--muted)}.error{color:var(--danger);margin:0}.success{color:var(--accent);margin:0}.env-banner{display:flex;gap:12px;align-items:center;flex-wrap:wrap;padding:6px 16px;background:var(--banner);color:#1c1d1f;font-size:13px}.env-banner code{font-family:ui-monospace,monospace}.center{min-height:80vh;display:grid;place-items:center;padding:16px}.card{background:var(--surface);border:1px solid 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