:root{--bg:#fbfaf7;--fg:#1f2421;--muted:#5b625e;--accent:#2f5d46;--line:#e3e0d8;--card:#ffffff}
@media (prefers-color-scheme:dark){:root{--bg:#151816;--fg:#e8ebe9;--muted:#a3aba6;--accent:#8cc5a5;--line:#2c312e;--card:#1c201e}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif}
.wrap{max-width:760px;margin:0 auto;padding:0 16px}
header{border-bottom:1px solid var(--line)}
header .wrap{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;padding-top:18px;padding-bottom:18px}
.brand{font-weight:700;letter-spacing:.02em;color:var(--fg);text-decoration:none;font-size:1.15rem}
nav a{color:var(--muted);text-decoration:none;margin-left:16px;font-size:.95rem}
nav a:first-child{margin-left:0}
nav a:hover,a{color:var(--accent)}
main{padding:40px 0 56px}
h1{font-size:1.9rem;line-height:1.25;margin:0 0 12px}
h2{font-size:1.25rem;margin:36px 0 8px}
h3{font-size:1.05rem;margin:24px 0 6px}
.lead{color:var(--muted);font-size:1.1rem;margin:0 0 28px}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:18px 20px;margin:12px 0}
.card h3{margin-top:0}
.tag{display:inline-block;font-size:.8rem;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:1px 10px;margin-left:6px}
.small{color:var(--muted);font-size:.9rem}
footer{border-top:1px solid var(--line);padding:20px 0 32px;color:var(--muted);font-size:.9rem}
footer a{color:var(--muted);margin-right:14px}
.todo{background:#fff3c4;color:#5a4500;padding:0 4px;border-radius:3px}
@media (prefers-color-scheme:dark){.todo{background:#4a3d0a;color:#ffe9a3}}