:root{--bg:#f6f8fb;--card:#fff;--ink:#14202e;--muted:#566475;--brand:#0b3a6e;--accent:#e0a100;--line:#dbe2ea;--todo-bg:#fff3cd;--todo-ink:#6b4e00}@media (prefers-color-scheme:dark){:root{--bg:#0b1520;--card:#12202f;--ink:#e7edf4;--muted:#9fb0c2;--brand:#8cc0ff;--line:#223548;--todo-bg:#3a2f08;--todo-ink:#ffd666}}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--ink);padding-left:env(safe-area-inset-left);padding-right:env(safe-area-inset-right);margin:0;font:16px/1.65 system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans,Ubuntu,Cantarell,Helvetica Neue,sans-serif}.top{padding:calc(12px + env(safe-area-inset-top)) 16px 12px;color:#fff;background:#0b1d33;justify-content:space-between;align-items:center;gap:12px;display:flex}.brand{color:#fff;letter-spacing:.04em;font-weight:700;text-decoration:none}.back{color:#0b1d33;background:var(--accent);border-radius:999px;align-items:center;min-height:44px;padding:10px 16px;font-size:14px;font-weight:600;text-decoration:none;display:inline-flex}main{max-width:760px;margin:0 auto;padding:24px 16px 8px}h1{color:var(--brand);margin:8px 0 4px;font-size:1.9rem;line-height:1.2}h2{color:var(--brand);margin:28px 0 6px;font-size:1.15rem}.meta{color:var(--muted);margin:0 0 20px;font-size:.9rem}.summary{background:var(--card);border:1px solid var(--line);border-left:5px solid var(--accent);border-radius:12px;padding:4px 18px 10px}.summary h2{margin-top:14px}ul{padding-left:1.2rem}li{margin:6px 0}a{color:var(--brand)}code{background:var(--card);border:1px solid var(--line);border-radius:6px;padding:1px 6px;font-size:.9em}.todo{background:var(--todo-bg);color:var(--todo-ink);border-radius:6px;padding:1px 6px;font-weight:600}footer{text-align:center;color:var(--muted);padding:24px 16px calc(32px + env(safe-area-inset-bottom));font-size:.85rem}