:root{--bg:#fff;--fg:#1c1c1e;--mut:#6b7280;--line:#e5e7eb;--acc:#2563eb;--card:#f8fafc}
@media (prefers-color-scheme:dark){:root{--bg:#0f1115;--fg:#e5e7eb;--mut:#9ca3af;--line:#262a33;--acc:#60a5fa;--card:#161a21}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.7 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
a{color:var(--acc)}main{max-width:720px;margin:0 auto;padding:1.5rem 1.25rem}
header.site,footer.site{max-width:720px;margin:0 auto;padding:1rem 1.25rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:.5rem}
footer.site{color:var(--mut);font-size:.9rem;border-top:1px solid var(--line);margin-top:2rem}
.brand{font-weight:700;font-size:1.2rem;text-decoration:none;color:var(--fg)}nav a{margin-left:1rem;text-decoration:none}
h1,h2,h3{line-height:1.25}img{max-width:100%;height:auto;border-radius:8px}time{color:var(--mut);font-size:.9rem}
pre{background:var(--card);padding:1rem;overflow:auto;border-radius:8px}code{background:var(--card);padding:.1em .3em;border-radius:4px}
blockquote{border-left:3px solid var(--acc);margin:1rem 0;padding:.1rem 1rem;color:var(--mut)}
.card{border:1px solid var(--line);background:var(--card);border-radius:10px;padding:.5rem 1.2rem;margin:1rem 0}.card h2{margin:.5rem 0 0}.card h2 a{text-decoration:none}
.hero{padding:2rem 0}.hero h1{font-size:2.2rem;margin:0}.notice{background:#fef3c7;color:#92400e;padding:.6rem 1rem;border-radius:8px}
/* admin */
.admin main{max-width:900px}.admin nav.bar{display:flex;flex-wrap:wrap;gap:.75rem;padding:1rem 1.25rem;border-bottom:1px solid var(--line);align-items:center}
.admin nav.bar a,.linkbtn{margin:0;background:none;border:0;padding:0;color:var(--acc);font:inherit;cursor:pointer;text-decoration:none}
label{display:block;margin:.8rem 0;font-weight:600}input,select,textarea{display:block;width:100%;padding:.6rem;margin-top:.3rem;font:inherit;background:var(--bg);color:var(--fg);border:1px solid var(--line);border-radius:8px}
input[type=checkbox]{display:inline;width:auto;margin-right:.4rem}textarea{min-height:360px;font-family:ui-monospace,monospace;font-size:.95rem}
button,.btn{background:var(--acc);color:#fff;border:0;padding:.65rem 1.1rem;border-radius:8px;font:inherit;cursor:pointer;text-decoration:none;display:inline-block}
button.danger{background:#dc2626}table{width:100%;border-collapse:collapse}td,th{padding:.5rem;border-bottom:1px solid var(--line);text-align:left;font-size:.95rem}
.narrow{max-width:420px!important}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:1rem}.grid code{font-size:.7rem;word-break:break-all}