:root{color-scheme:light;--ink:#1b3029;--green:#205d47;--paper:#f4f3ed;--line:#dfdfd4}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.65 system-ui,'Microsoft YaHei',sans-serif}header{display:flex;align-items:center;gap:24px;padding:32px 4vw;border-bottom:1px solid var(--line)}header div{flex:1}small{letter-spacing:2px;color:var(--green);font-weight:700}h1{font-size:30px;line-height:1.3;margin:8px 0}h2{font-size:23px;margin:0 0 16px}p{margin:8px 0 18px}button,summary{cursor:pointer}button{background:var(--green);color:white;border:0;border-radius:8px;padding:11px 16px;font:inherit}button:disabled{opacity:.5;cursor:wait}button.secondary{background:#e8ede5;color:var(--ink)}input,select,textarea{font:inherit;border:1px solid var(--line);border-radius:8px;padding:10px;background:#fff;color:var(--ink);width:100%}textarea{min-height:125px;resize:vertical}label{display:block;font-size:13px;color:#4a6257;margin:10px 0}form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;align-items:end}.wide,form textarea{grid-column:1/-1}form button{justify-self:start;margin-bottom:10px}details{margin-top:20px}summary{font-size:17px;font-weight:650}#auth{max-width:740px;margin:30px auto}#workspace{display:grid;grid-template-columns:300px minmax(0,1fr);gap:22px;max-width:1450px;margin:22px auto;padding:0 24px}#workspace[hidden],[hidden]{display:none!important}.card{background:#fffef9;border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:0 4px 22px #18312805}aside{align-self:start;position:sticky;top:18px}.content{display:grid;gap:22px;min-width:0}.muted,footer{color:#68776b;font-size:13px}#notice{margin:0;padding:10px 4vw;color:#8a402a;white-space:pre-wrap}#notice:empty{display:none}#threads{display:grid;gap:8px;margin:15px 0}#threads button{text-align:left;font-size:13px;background:#eef1e9;color:var(--ink)}#chat{display:block;margin-top:24px}.actions{display:flex;gap:12px;flex-wrap:wrap}.message{border-bottom:1px solid var(--line);padding:18px 0;white-space:pre-wrap;overflow-wrap:anywhere}.question{font-weight:650}.answer{background:#f5f7f0;border-radius:12px;padding:18px}.source{font-size:13px;padding:10px;border-left:3px solid #bbcbb4;margin:12px 0;white-space:pre-wrap;overflow-wrap:anywhere}pre{white-space:pre-wrap;overflow-wrap:anywhere;font-size:12px;max-height:380px;overflow:auto}.user-row{border-bottom:1px solid var(--line);padding:12px 0}.user-row button{padding:5px 10px;margin:5px;font-size:12px}a{color:var(--green)}footer{text-align:center;margin:30px 16px}@media(max-width:850px){#workspace{grid-template-columns:1fr}aside{position:static}header{flex-wrap:wrap}h1{font-size:24px}form{grid-template-columns:1fr}#auth{margin:20px}.card{padding:18px}}