:root{--paper:#f7f7f7;--ink:#252525;--muted:#8c8c8c;--line:#e9e9e9;--orange:#ed5829;--sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}*{box-sizing:border-box}body{margin:0;background:#f0f0f0;color:var(--ink);font-family:var(--sans);font-size:15px}button,a,textarea{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible{outline:3px solid #ed582970;outline-offset:4px}.conversation{max-width:900px;height:100dvh;min-height:0;display:flex;flex-direction:column;margin:auto;background:var(--paper);border-left:1px solid var(--line);border-right:1px solid var(--line)}.chat-header{min-height:74px;padding:16px 24px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;flex-shrink:0}.identity{display:flex;align-items:center;gap:11px}.chat-header h1{font-size:16px;font-weight:600;margin:0}.avatar{flex:0 0 32px;width:32px;height:32px;display:grid;place-items:center;font-size:16px;font-weight:600;background:#fff0e8;color:var(--orange);border-radius:8px}.header-avatar{width:36px;height:36px;flex-basis:36px}.reset{border:0;background:transparent;font-size:12px;color:#777;padding:12px 0 12px 12px}.messages{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:28px 24px 16px}.message{display:flex;gap:10px;margin-bottom:24px;max-width:88%}.message>div{min-width:0}.speaker{display:block;color:var(--muted);font-size:11px;margin:0 0 7px 2px}.bubble{line-height:1.85;white-space:pre-wrap;word-break:break-word;overflow-wrap:anywhere;font-size:14px;padding:13px 17px;background:#fff;border:1px solid #eeeeec;border-radius:2px 12px 12px 12px}.bubble strong{font-weight:650}.user{margin-left:auto;justify-content:flex-end}.user .bubble{background:#ffebe1;border-color:#ffebe1;border-radius:12px 2px 12px 12px}.compose-wrap{padding:14px 24px calc(16px + env(safe-area-inset-bottom));background:#fff;border-top:1px solid var(--line);flex-shrink:0}form{display:flex;gap:10px;padding:12px 12px 12px 15px;border:1px solid #dedede;border-radius:9px;background:#fff}form:focus-within{border-color:var(--orange)}textarea{width:100%;min-height:46px;max-height:140px;border:0;resize:none;font:inherit;font-size:14px;line-height:1.7;color:var(--ink);outline:none;background:transparent}textarea::placeholder{color:#aaa}#send{align-self:flex-end;border:0;color:#fff;background:var(--orange);padding:11px 21px;border-radius:6px;white-space:nowrap;font-size:13px;min-height:42px}button:disabled{opacity:.55;cursor:wait}.compose-meta{display:flex;justify-content:space-between;gap:12px;align-items:center;font-size:10px;color:#999;padding-top:10px}.compose-meta button{border:0;background:none;padding:0;color:#888;font-size:10px}.error{font-size:12px;color:#ae3924;line-height:1.6;margin:0 0 10px}.working{font-size:11px;color:var(--muted);margin-bottom:10px}.sr-only{position:absolute;width:1px;height:1px;clip:rect(0,0,0,0);overflow:hidden}.privacy-page{max-width:720px;margin:45px auto;padding:25px;line-height:2}.privacy-page h1{font-size:26px}.privacy-page h2{font-size:18px;margin-top:28px}.privacy-page a{color:var(--orange)}@media(max-width:650px){body{background:var(--paper)}.conversation{border:0}.chat-header{padding:13px 16px;min-height:66px}.chat-header h1{font-size:15px}.messages{padding:24px 14px 12px}.message{max-width:92%;gap:9px}.bubble{font-size:14px;padding:11px 13px}.compose-wrap{padding:10px 12px calc(12px + env(safe-area-inset-bottom))}form{padding:10px 10px 10px 12px}textarea{font-size:16px}#send{padding:10px 16px}}
.chat-mode{display:block;font-size:10px;color:#999;margin-top:4px}