:root{color-scheme:dark;--bg:#17150f;--card:#262219;--line:#4b4131;--ink:#f2e9d9;--muted:#bdaf96;--accent:#e3945f}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 system-ui,"Microsoft Yahei",sans-serif}header{padding:20px max(24px,calc((100vw - 1040px)/2));border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}a{color:var(--accent)}header a{font-size:21px;text-decoration:none;font-weight:700}header span{font-size:14px;color:var(--muted);margin-left:16px}main{max-width:1088px;margin:0 auto;padding:24px}h1{font-size:30px;line-height:1.3;margin:12px 0 22px}h2{font-size:20px}h3{font-size:17px}p{margin:12px 0}.eyebrow{color:var(--accent);font-size:13px;letter-spacing:.1em}.muted,small{color:var(--muted);font-size:14px}.card{padding:24px;background:var(--card);border:1px solid var(--line);border-radius:16px;margin:20px 0}.narrow{max-width:520px}.narrow#login-panel{margin:50px auto}label{display:block;margin:16px 0 7px}input,textarea,select{font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:9px;padding:12px;width:100%;margin-top:6px}textarea{resize:vertical}button,.button{font:inherit;font-weight:600;background:var(--accent);color:#251a12;border:0;border-radius:9px;padding:10px 20px;cursor:pointer;text-decoration:none;display:inline-block}button:disabled{opacity:.5;cursor:wait}.secondary,nav button{background:transparent;color:var(--ink);border:1px solid var(--line)}nav{display:flex;gap:10px;flex-wrap:wrap;margin:20px 0 30px}nav .selected{background:var(--card);border-color:var(--accent);color:var(--accent)}.heading,.actions{display:flex;gap:12px;align-items:center;justify-content:space-between}.actions{justify-content:flex-start;margin-top:18px}.columns{display:grid;grid-template-columns:1fr 1fr;gap:20px}.columns .card{min-width:0}.message{background:var(--card);border-left:3px solid var(--accent);border-radius:12px;margin:14px 0;padding:20px;white-space:pre-wrap;overflow-wrap:anywhere}.message.user{background:transparent;border-left-color:var(--line)}.record{padding:18px 0;border-bottom:1px solid var(--line);overflow-wrap:anywhere}.record button,.record a{margin:6px 8px 4px 0}.status{color:var(--accent)}#notice{min-height:1.6em;color:var(--accent);white-space:pre-wrap}footer{padding:35px;text-align:center;color:var(--muted);font-size:13px}[hidden]{display:none!important}fieldset{border:0;padding:0;margin:25px 0}legend{font-size:20px;font-weight:600}pre{white-space:pre-wrap;overflow-wrap:anywhere;font:inherit}.small-input{max-width:360px}details>summary{cursor:pointer;color:var(--accent)}:focus-visible{outline:2px solid var(--accent);outline-offset:3px}@media(max-width:650px){main{padding:16px}header{padding:16px}.card{padding:18px}.columns{grid-template-columns:1fr;gap:0}nav{gap:6px}nav button{padding:8px 12px}.heading{align-items:flex-start}h1{font-size:26px}}