:root{--bg: #f5f7fb;--surface: #ffffff;--border: #e3e9f2;--text: #0f1a2b;--text-soft: #334155;--text-muted: #6b7a90;--accent: #2b6cf6;--accent-soft: rgba(43, 108, 246, .12);--danger: #e05b5b;--radius: 14px;--font: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);font-family:var(--font);-webkit-font-smoothing:antialiased}button,input,textarea{font:inherit;color:inherit}.hidden{display:none!important}.login-page{min-height:100%;display:grid;grid-template-columns:minmax(360px,46%) 1fr;background:#fff}.login-brand{position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:space-between;gap:40px;padding:56px 52px;color:#eaf0ff;background:linear-gradient(165deg,#0b1220,#122036 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rgba(207,224,255,.35)}.support-mail:hover{border-bottom-style:solid}.login-form-panel{display:grid;place-items:center;padding:48px 24px;background:linear-gradient(180deg,#fff,#f6f8fc)}.login-form{width:min(400px,100%)}.login-form h2{margin:0 0 8px;font-size:27px;letter-spacing:.5px;color:#0f1a2b;font-weight:650}.login-form .login-sub{margin:0 0 28px;font-size:14px;color:#5b6b85}.login-field{display:grid;gap:8px;margin-bottom:16px}.login-field label{font-size:13px;color:#334155}.login-field input{height:46px;padding:0 14px;border-radius:8px;border:1px solid transparent;background:#eef3fb;color:#0f1a2b;outline:none;transition:border-color .15s ease,box-shadow .15s ease,background .15s ease}.login-field input::placeholder{color:#93a1b8}.login-field input:focus{background:#fff;border-color:var(--accent);box-shadow:0 0 0 3px #2b6cf629}.login-submit{width:100%;height:46px;margin-top:6px;border:none;border-radius:8px;background:var(--accent);color:#fff;font-size:15px;font-weight:600;letter-spacing:.5px;cursor:pointer;transition:filter .15s ease,opacity .15s ease}.login-submit:hover{filter:brightness(1.06)}.login-submit:disabled{opacity:.6;cursor:default}.login-error{min-height:20px;margin-top:14px;font-size:13px;color:var(--danger)}.login-legal{margin-top:28px;font-size:12px;color:#93a1b8;text-align:center}.login-hint{font-size:12px;color:#93a1b8;line-height:1.5}.password-field{position:relative}.password-field input{width:100%;padding-right:62px}.password-toggle{position:absolute;top:50%;right:8px;transform:translateY(-50%);border:none;background:transparent;color:#5b6b85;font-size:12.5px;padding:6px 9px;border-radius:6px;cursor:pointer}.password-toggle:hover{color:var(--accent);background:#2b6cf614}.password-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:1px}@media(max-width:900px){.login-page{grid-template-columns:1fr}.login-brand{padding:34px 26px;gap:24px}.brand-copy h1{font-size:24px;margin-top:16px}.brand-points{margin-top:18px}.login-form-panel{padding:34px 20px 48px}}.shell{height:100%;display:grid;grid-template-columns:268px 1fr;background:var(--bg)}.sidebar{background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;min-width:0;overflow:hidden}.sidebar-head{padding:16px 14px 10px;display:flex;align-items:center;justify-content:space-between;gap:8px}.sidebar-title{font-size:13px;color:var(--text-muted);letter-spacing:.4px}.new-btn{width:calc(100% - 24px);margin:0 12px 10px;background:var(--accent-soft);border:1px solid rgba(43,108,246,.2);color:var(--accent);border-radius:10px;padding:9px 12px;cursor:pointer;font-size:13px;font-weight:550}.new-btn:hover{border-color:var(--accent)}.session-list{flex:1;overflow-y:auto;padding:4px 8px 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auto}.markdown>:first-child{margin-top:0}.markdown>:last-child{margin-bottom:0}.markdown p{margin:0 0 7px}.markdown ul,.markdown ol{margin:4px 0 8px;padding-left:22px}.markdown li{margin:1px 0}.markdown li p{margin:0}.markdown h1,.markdown h2,.markdown h3{margin:12px 0 6px;line-height:1.4;font-size:16px}.markdown h1{font-size:18px}.markdown hr{border:none;border-top:1px solid var(--border);margin:12px 0}.markdown code{background:#eef3fb;border-radius:5px;padding:1px 5px;font-size:13px;font-family:Cascadia Code,Consolas,monospace}.markdown pre{background:#0f1a2b;color:#e8eefc;padding:12px 14px;border-radius:10px;overflow-x:auto;margin:10px 0}.markdown pre code{background:transparent;color:inherit;padding:0}.markdown blockquote{margin:10px 0;padding:2px 12px;border-left:3px solid var(--accent);color:var(--text-muted)}.markdown table{border-collapse:collapse;margin:10px 0;font-size:13.5px}.markdown th,.markdown td{border:1px solid var(--border);padding:5px 9px}.markdown a{color:var(--accent)}.composer-wrap{padding:12px 20px 22px}.composer{max-width:860px;margin:0 auto;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:10px 12px;display:flex;align-items:flex-end;gap:10px;transition:border-color .12s ease,box-shadow .12s ease}.composer:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px #2b6cf61f}.composer-input{flex:1;resize:none;border:none;outline:none;background:transparent;max-height:160px;min-height:24px;line-height:1.5;padding:6px 2px}.composer-input::placeholder{color:#93a1b8}.send-btn{border-radius:10px;padding:8px 14px;background:var(--accent);border:none;color:#fff;font-weight:600;cursor:pointer;white-space:nowrap}.send-btn:disabled{opacity:.45;cursor:default}.stop-btn{border-radius:10px;padding:8px 12px;background:transparent;border:1px solid var(--border);color:var(--text-muted);font-weight:550;cursor:pointer;white-space:nowrap}.stop-btn:hover{border-color:var(--danger);color:var(--danger)}.stop-btn:disabled{opacity:.35;cursor:default}.composer-hint{max-width:860px;margin:6px auto 0;font-size:11px;color:var(--text-muted);text-align:center}@media(max-width:760px){.shell{grid-template-columns:0 1fr}.shell.mobile-open{grid-template-columns:1fr}.sidebar{position:absolute;z-index:20;height:100%;width:268px;display:none}.shell.mobile-open .sidebar{display:flex}}