:root{--bg:#f7f7f5;--card:#fff;--ink:#1d1d1f;--mute:#6b6b70;--line:#e3e3e0;--acc:#111;--ok:#1f7a4d;--err:#b42318}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Noto Sans TC","PingFang TC",sans-serif;line-height:1.6}
.wrap{max-width:760px;margin:0 auto;padding:24px 16px 64px}
header{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:20px}
.brand{font-weight:800;font-size:18px}.brand small{display:block;font-weight:400;color:var(--mute);font-size:12px}
.btn{display:inline-block;background:var(--acc);color:#fff;border:0;border-radius:10px;padding:10px 16px;font-size:15px;cursor:pointer;text-decoration:none}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn:disabled{opacity:.5;cursor:default}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px;margin-bottom:12px}
.row{display:flex;gap:8px;flex-wrap:wrap}
input[type=text],textarea,select{font:inherit;border:1px solid var(--line);border-radius:10px;padding:10px 12px;background:#fff;color:var(--ink)}
input[type=text]{flex:1;min-width:180px}
textarea{width:100%;min-height:72px;resize:vertical;margin-top:8px}
.meta{color:var(--mute);font-size:13px}
.post-text{white-space:pre-wrap;margin:6px 0}
.msg{font-size:14px;margin-top:6px}.msg.ok{color:var(--ok)}.msg.err{color:var(--err)}
.user{display:flex;align-items:center;gap:8px;font-size:14px}.user img{width:28px;height:28px;border-radius:50%}
footer{margin-top:40px;font-size:13px;color:var(--mute)}footer a{color:var(--mute)}
.doc h1{font-size:22px}.doc h2{font-size:17px;margin-top:24px}
@media (prefers-color-scheme:dark){:root{--bg:#141414;--card:#1e1e1e;--ink:#f2f2f2;--mute:#a0a0a5;--line:#333;--acc:#f2f2f2}.btn{color:#111}.btn.ghost{color:var(--ink)}input[type=text],textarea,select{background:#1e1e1e}}