:root{--bg:#f3f5f9;--card:#fff;--fg:#1b2333;--muted:#667085;--line:#e4e8f0;--accent:#0a66c2;--accent-fg:#fff;--err:#b42318;--errbg:#fef3f2;--ok:#067647;--okbg:#ecfdf3;--r:14px}
@media (prefers-color-scheme:dark){:root{--bg:#0f1420;--card:#171e2e;--fg:#e8ecf4;--muted:#93a0b8;--line:#263049;--accent:#4a9df0;--accent-fg:#06121f;--err:#fda29b;--errbg:#3a1816;--ok:#75e0a7;--okbg:#10291d}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--accent)}
.top{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 16px;background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0}
.brand{font-weight:700;text-decoration:none;color:var(--fg)}
.inline{display:flex;align-items:center;gap:10px;margin:0}
.who{color:var(--muted);font-size:.9rem}
main{max-width:980px;margin:0 auto;padding:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px;margin-bottom:16px;box-shadow:0 1px 2px rgba(16,24,40,.04)}
.card.narrow{max-width:420px;margin:24px auto}
h1,h2{margin:0 0 12px;font-size:1.25rem;line-height:1.25}
label{display:block;font-weight:600;font-size:.9rem;margin-bottom:12px}
input,textarea{display:block;width:100%;margin-top:6px;padding:12px;font:inherit;color:inherit;background:var(--bg);border:1px solid var(--line);border-radius:10px}
input:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:1px}
.btn{display:inline-block;padding:12px 18px;min-height:44px;font:inherit;font-weight:600;color:var(--accent-fg);background:var(--accent);border:1px solid var(--accent);border-radius:10px;cursor:pointer;text-decoration:none}
.btn.ghost{background:transparent;color:var(--accent)}
form>.btn{width:100%}
.muted{color:var(--muted)}
.notice{padding:10px 12px;border-radius:10px;margin-bottom:12px}
.notice.err{background:var(--errbg);color:var(--err)}
.notice.ok{background:var(--okbg);color:var(--ok)}
table.posts{width:100%;border-collapse:collapse}
.posts th,.posts td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line);vertical-align:top}
.posts th{font-size:.8rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
.posts td.comment{overflow-wrap:anywhere}
.pager{display:flex;justify-content:space-between;align-items:center;margin-top:12px}
@media (min-width:700px){form>.btn{width:auto}}
@media (max-width:699px){
  .posts thead{display:none}
  .posts,.posts tbody,.posts tr,.posts td{display:block;width:100%}
  .posts tr{border:1px solid var(--line);border-radius:12px;padding:8px 12px;margin-bottom:12px}
  .posts td{border:0;padding:4px 0}
  .posts td::before{content:attr(data-label);display:block;font-size:.72rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
  .who{display:none}
}