:root{font-family:Inter,"Microsoft YaHei",sans-serif;color:#20242b;background:#f5f6f8;--ink:#20242b;--muted:#7b8491;--line:#e4e7eb;--accent:#ef6c4d}*{box-sizing:border-box}body{margin:0}header{height:76px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 5vw;gap:42px}.brand{display:flex;gap:11px;align-items:center;min-width:230px}.mark{display:grid;place-items:center;width:34px;height:34px;background:var(--ink);color:#fff;font-weight:800;border-radius:9px}.brand strong{display:block;letter-spacing:.2px}.brand small{color:var(--muted);font-size:11px}.search{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:8px;height:40px;max-width:520px;flex:1;color:var(--muted);padding:0 13px}.search input{border:0;outline:0;font:inherit;width:100%;background:transparent}.count{color:var(--muted);font-size:12px}main{display:grid;grid-template-columns:240px minmax(0,920px);gap:56px;max-width:1280px;margin:0 auto;padding:44px 32px}aside{border-right:1px solid var(--line);padding-right:26px;min-height:calc(100vh - 120px)}.side-title{font-size:12px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:1.3px;margin:0 0 18px}nav button{display:block;width:100%;text-align:left;border:0;background:none;padding:10px 12px;border-radius:7px;color:#59616c;cursor:pointer;font:inherit}nav button:hover,nav button.active{background:#fff;color:var(--ink);font-weight:600}.hint{position:sticky;top:90vh;color:#a0a7b0;font-size:11px;line-height:1.8;margin:30px 12px}.welcome{padding:30px 0 52px;border-bottom:1px solid var(--line)}.eyebrow{font-size:11px;color:var(--accent);font-weight:700;letter-spacing:1.8px;margin-bottom:19px}.welcome h1{font-size:43px;line-height:1.17;letter-spacing:-1px;margin:0 0 20px}.welcome em{color:var(--accent);font-style:normal}.welcome p{color:#68717d;max-width:560px;line-height:1.8;margin:0}.stats{display:flex;gap:46px;margin-top:40px}.stats b{display:block;font-size:21px}.stats span{display:block;color:var(--muted);font-size:12px;margin-top:6px}.results{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;padding-top:26px}.card{background:#fff;border:1px solid var(--line);border-radius:8px;padding:20px;cursor:pointer;min-height:150px}.card:hover{border-color:#c5cbd2;box-shadow:0 7px 20px #2632380d}.tag{font-size:11px;color:var(--accent);font-weight:700}.card h3{font-size:17px;margin:13px 0 8px}.card p{color:var(--muted);font-size:13px;line-height:1.6;margin:0}.meta{color:#a1a8b0;font-size:11px;margin-top:15px}article{padding:30px 0;line-height:1.85;max-width:760px}article h1{font-size:35px;line-height:1.3;margin-top:0}article h2{margin-top:34px;border-bottom:1px solid var(--line);padding-bottom:8px}article a{color:var(--accent)}article pre{background:#20242b;color:#f3f5f7;padding:16px;overflow:auto;border-radius:7px}article code{font-family:Consolas,monospace}@media(max-width:800px){header{padding:0 18px;gap:14px}.brand{min-width:auto}.brand div{display:none}.count{display:none}main{display:block;padding:24px 18px}aside{border:0;min-height:0;padding:0 0 15px}nav{display:flex;overflow:auto;gap:4px}nav button{white-space:nowrap}.hint{display:none}.welcome h1{font-size:34px}.results{grid-template-columns:1fr}}
header{gap:24px;position:relative;z-index:3}main>aside{height:calc(100vh - 120px);position:sticky;top:44px;overflow-y:auto}.chat-toggle{border:1px solid #f0c4b9;background:#fff8f5;color:var(--accent);border-radius:7px;padding:9px 13px;white-space:nowrap;cursor:pointer;font:inherit;font-size:12px}.chat-panel{position:fixed;z-index:5;right:28px;bottom:26px;width:370px;height:520px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 16px 50px #20242b22;display:flex;flex-direction:column}.chat-panel[hidden]{display:none}.chat-head{display:flex;justify-content:space-between;padding:18px;border-bottom:1px solid var(--line)}.chat-head small{display:block;color:var(--muted);font-size:11px;margin-top:4px}.chat-head button{border:0;background:none;font-size:22px;color:var(--muted);cursor:pointer}.messages{flex:1;overflow:auto;padding:16px}.bubble{font-size:13px;line-height:1.7;padding:11px 13px;border-radius:9px;margin-bottom:11px;white-space:pre-wrap}.bubble.bot{background:#f5f6f8}.bubble.user{background:#20242b;color:#fff;margin-left:30px}#chatForm{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line)}#chatInput{resize:none;flex:1;border:1px solid var(--line);border-radius:7px;padding:9px;font:inherit;font-size:12px;outline:0}#chatForm button{background:var(--ink);border:0;color:#fff;border-radius:7px;padding:0 15px;cursor:pointer}@media(max-width:800px){header{padding:0 18px;gap:14px}.chat-toggle{padding:8px;font-size:0}.chat-toggle:first-letter{font-size:16px}main>aside{border:0;height:auto;position:static;padding:0 0 15px}.chat-panel{right:12px;left:12px;bottom:12px;width:auto}}
[hidden]{display:none!important}
main>aside .hint{color:#68717d;overflow-wrap:anywhere}
@media(max-width:800px){main>aside .hint{display:block;position:static;margin:12px 0 0}}
.answer-sources{border-top:1px solid var(--line);margin-top:12px;padding-top:8px;display:grid;gap:6px}.source-link{border:0;background:transparent;text-align:left;color:#b44932;cursor:pointer;padding:4px 0;font:inherit;font-size:12px;white-space:normal;overflow-wrap:anywhere}.source-link:hover{text-decoration:underline}.evidence-meta{white-space:pre-wrap;overflow-wrap:anywhere;font-size:13px;color:#68717d}.evidence-text{white-space:pre-wrap;overflow-wrap:anywhere;font-size:15px}article h1{overflow-wrap:anywhere}.card:focus-visible,.source-link:focus-visible{outline:2px solid #b44932;outline-offset:3px}.chat-panel{width:min(460px,calc(100vw - 40px));height:min(660px,calc(100dvh - 100px))}@media(max-width:800px){.chat-panel{width:auto}}
.chat-panel{min-height:0}