:root{color-scheme:light;--lab-paper:#fff;--lab-ground:#f4f6f7;--lab-ink:#202c35;--lab-muted:#596670;--lab-line:#e1e6e9;--lab-control:#bec8ce;--lab-blue:#285e92;--lab-active:#edf0f2;--lab-bad:#a62b2b;--lab-good:#286245;--assistant-width:280px;--lab-font:"Times New Roman","SimSun",serif;--lab-heading:"SimHei","Microsoft YaHei",sans-serif}
.lab-topbar,.lab-assistant,.lab-dialog{box-sizing:border-box;font-family:var(--lab-font);color:var(--lab-ink);font-size:15px;line-height:1.5}
.lab-topbar *,.lab-assistant *,.lab-dialog *{box-sizing:border-box}
.lab-topbar{height:52px;display:flex;align-items:center;padding:0 24px;gap:28px;border-bottom:1px solid var(--lab-line);background:var(--lab-paper);position:relative;z-index:10;flex-shrink:0}
.lab-brand{font-family:var(--lab-heading);font-size:18px;font-weight:400;display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--lab-ink);white-space:nowrap}
.lab-brand svg{width:27px;height:27px;flex:none}
.lab-global-nav{display:flex;align-items:stretch;height:100%;gap:30px;margin-left:auto;margin-right:auto}
.lab-global-nav a{display:flex;align-items:center;color:var(--lab-muted);font-size:15px;text-decoration:none;border-bottom:2px solid transparent;padding:0 2px;white-space:nowrap}
.lab-global-nav a:hover,.lab-global-nav a[aria-current=page]{color:var(--lab-ink);border-color:var(--lab-ink)}
.lab-return{color:var(--lab-muted);font-size:14px;text-decoration:none;white-space:nowrap}
.lab-return:hover{text-decoration:underline}
.lab-topbar a:focus-visible,.lab-assistant :focus-visible,.lab-dialog :focus-visible{outline:2px solid var(--lab-blue);outline-offset:3px}
.lab-assistant{display:flex;flex-direction:column;min-height:0;min-width:0;border-left:1px solid var(--lab-line);background:var(--lab-paper);padding:18px 18px 14px;gap:12px}
.lab-assistant h2{font:18px var(--lab-heading);margin:0;font-weight:400}
.lab-assistant-head{display:flex;justify-content:space-between;align-items:center;gap:8px}
.lab-assistant button,.lab-assistant input,.lab-assistant textarea,.lab-assistant select{font:inherit;color:inherit}
.lab-assistant .assistant-connect{background:none;border:0;padding:4px 0;color:var(--lab-muted);font-size:13px;cursor:pointer}
.assistant-mode{display:flex;align-items:center;justify-content:space-between;gap:6px;font-size:13px;color:var(--lab-muted);border-bottom:1px solid var(--lab-line);padding-bottom:10px}
.assistant-mode select{max-width:140px;border:0;background:var(--lab-paper);font-size:13px;padding:3px}
.assistant-context{font-size:13px;color:var(--lab-muted);margin:0;line-height:1.6}
.assistant-context strong{color:var(--lab-ink);font-weight:400}
.assistant-messages{min-height:0;overflow:auto;flex:1;display:flex;flex-direction:column;gap:14px;scrollbar-width:thin;padding:0 2px 4px 0}
.assistant-message{font-size:15px;line-height:1.75;overflow-wrap:anywhere}
.assistant-message p{margin:0 0 8px;white-space:pre-wrap}
.assistant-message .message-source{font-size:12px;color:var(--lab-muted);margin-top:6px;line-height:1.5}
.assistant-message.user{border-left:2px solid var(--lab-control);padding-left:10px;color:var(--lab-muted)}
.assistant-message.answer{background:var(--lab-ground);padding:12px;border-radius:6px}
.assistant-message.answer.error{border-left:2px solid var(--lab-bad)}
.assistant-message-label{font-size:12px;color:var(--lab-muted);display:block;margin-bottom:5px}
.assistant-suggestions{display:flex;flex-direction:column;gap:8px}
.assistant-suggestions button{border:0;background:none;padding:0;text-align:left;cursor:pointer;font-size:14px;line-height:1.5;color:var(--lab-ink)}
.assistant-suggestions button:hover{text-decoration:underline}
.assistant-compose{display:flex;flex-direction:column;gap:8px;margin-top:auto}
.assistant-compose textarea{resize:none;width:100%;min-height:64px;max-height:120px;padding:10px;background:var(--lab-paper);border:1px solid var(--lab-control);border-radius:6px;line-height:1.5;font-size:14px}
.assistant-compose textarea::placeholder{color:var(--lab-muted)}
.assistant-compose-row{display:flex;justify-content:space-between;align-items:center;gap:8px}
.assistant-compose-row span{font-size:12px;color:var(--lab-muted)}
.assistant-compose button[type=submit]{border:1px solid var(--lab-ink);background:var(--lab-ink);color:#fff;padding:6px 14px;border-radius:6px;cursor:pointer;font-size:14px}
.assistant-compose button:disabled{opacity:.55;cursor:wait}
.lab-dialog{border:1px solid var(--lab-control);border-radius:8px;padding:22px;max-width:min(920px,calc(100vw - 32px));width:860px;max-height:calc(100dvh - 48px);background:var(--lab-paper);overflow:auto}
.lab-dialog::backdrop{background:rgba(25,34,41,.22)}
.lab-dialog h2{font:22px var(--lab-heading);margin:0}
.lab-dialog h3{font:17px var(--lab-heading);margin:18px 0 8px}
.lab-dialog p{margin:10px 0;line-height:1.75}
.lab-dialog .dialog-title{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:14px}
.lab-dialog button{font:inherit;background:#fff;border:1px solid var(--lab-control);border-radius:6px;padding:6px 12px;cursor:pointer;color:var(--lab-ink)}
.lab-dialog .dialog-close{border:0;padding:3px 0;color:var(--lab-muted)}
.lab-dialog pre{white-space:pre-wrap;background:var(--lab-ground);padding:14px;overflow-wrap:anywhere;font-size:13px}
.lab-dialog table{border-collapse:collapse;width:100%;font-variant-numeric:tabular-nums;font-size:14px}
.lab-dialog th,.lab-dialog td{border-bottom:1px solid var(--lab-line);padding:9px 8px;text-align:right;vertical-align:top}
.lab-dialog th:first-child,.lab-dialog td:first-child{text-align:left}
.lab-dialog th{font-weight:400;color:var(--lab-muted)}
.lab-dialog textarea{width:100%;min-height:100px;resize:vertical;border:1px solid var(--lab-control);border-radius:6px;padding:12px;font:15px var(--lab-font);line-height:1.7}
.lab-dialog .dialog-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:16px;flex-wrap:wrap}
.lab-dialog .small-note{font-size:13px;color:var(--lab-muted)}
.lab-dialog ul{padding-left:22px;line-height:1.8}
@media(max-width:1400px){:root{--assistant-width:260px}.lab-topbar{padding-inline:18px}.lab-assistant{padding:16px 14px 12px}}
@media(max-width:760px){.lab-topbar{padding:0 14px;gap:12px}.lab-brand{font-size:16px}.lab-brand svg{display:none}.lab-global-nav{gap:18px}.lab-global-nav a{font-size:14px}.lab-return{font-size:12px}.lab-assistant{padding:16px}.lab-dialog{padding:16px}.lab-dialog table{font-size:12px}.lab-dialog th,.lab-dialog td{padding:7px 4px}}
@media(prefers-reduced-motion:reduce){.lab-topbar *,.lab-assistant *,.lab-dialog *{scroll-behavior:auto;transition:none!important;animation:none!important}}