:root{--bg:#f6f5f1;--panel:#fff;--ink:#1b1b19;--muted:#6b6a64;--line:#dedcd3;--accent:#1f5d4c;--accent-ink:#fff;--danger:#a12d2d;--user:#e6efe9;--mono:ui-monospace, SFMono-Regular, Menlo, Consolas, monospace}@media (prefers-color-scheme:dark){:root{--bg:#161614;--panel:#1f1f1c;--ink:#ecebe5;--muted:#9c9a92;--line:#34332f;--accent:#5dcaa5;--accent-ink:#04342c;--danger:#f09595;--user:#24332d}}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--ink);margin:0;font:16px/1.55 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.shell{max-width:760px;margin:0 auto;padding:20px 16px 40px}.topbar{justify-content:space-between;align-items:center;gap:12px;margin-bottom:20px;display:flex}.brand{letter-spacing:-.01em;color:var(--ink);font-weight:600}h1{margin:0 0 6px;font-size:22px;font-weight:600}h2{margin:0 0 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