:root{color:#17211f;background:#f5f2ec;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Microsoft YaHei,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:#f5f2ec;overflow:hidden}button,input,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}.loginShell{min-height:100dvh;display:grid;place-items:center;padding:22px;background:#f5f2ec}.loginPanel{width:min(400px,100%);display:grid;gap:18px;padding:26px;border:1px solid #ded8cc;border-radius:8px;background:#fffcf7;box-shadow:0 22px 70px #1d232029}.loginAvatar{width:58px;height:58px;border-radius:18px;background:#efe7da;object-fit:cover;box-shadow:inset 0 0 0 1px #17211f14}.loginPanel h1,.brand h1,.chatTitle h2,.drawerHeader h2{margin:0;letter-spacing:0}.loginPanel h1{font-size:clamp(34px,8vw,48px);line-height:1}.eyebrow{margin:0 0 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minmax(0,1fr);padding-top:env(safe-area-inset-top);background:#f4f1ea;overflow:hidden}.topBar{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px clamp(14px,3vw,28px);border-bottom:1px solid #ded8cc;background:#fffcf7f5;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.brand{min-width:0;display:flex;align-items:center;gap:12px}.brand img{width:44px;height:44px;border-radius:14px;background:#efe7da;object-fit:cover;flex:0 0 auto}.brand h1{font-size:23px;line-height:1.05}.topActions{display:flex;align-items:center;gap:8px;flex:0 0 auto}.iconButton,.sendButton{width:42px;height:42px;background:#1d746a;color:#fff}.iconButton.ghost{border:1px solid #ddd6ca;background:#fffdfa;color:#24302d}.chatPane{min-height:0;display:grid;grid-template-rows:auto minmax(0,1fr) auto auto;max-width:880px;width:100%;margin:0 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#ddd6ca;background:#fffdfa;color:#384642;text-decoration:none}.composer{display:flex;align-items:flex-end;gap:10px;padding:14px clamp(14px,3vw,28px) calc(14px + env(safe-area-inset-bottom));border-top:1px solid #ded8cc;background:#fffcf7f7;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.composer textarea{flex:1 1 auto}.sendButton{flex:0 0 auto}.sendButton:disabled,.toolButton:disabled{opacity:.45;cursor:default}.error,.errorBar{color:#a1372b}.error{margin:0;line-height:1.5}.errorBar{margin:0 clamp(14px,3vw,28px) 10px;padding:10px 12px;border:1px solid #efc7bf;border-radius:8px;background:#fff3ef;font-size:14px;line-height:1.45}.drawerBackdrop{position:fixed;inset:0;z-index:20;display:flex;justify-content:flex-end;background:#151b1947}.drawer{width:min(390px,92vw);height:100%;display:grid;grid-template-rows:auto auto minmax(0,1fr) auto;padding-top:env(safe-area-inset-top);border-left:1px solid #d8d1c4;background:#fffcf7;box-shadow:-26px 0 60px 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