:root{color-scheme:dark;--bg:#0c1119;--side:#101721;--panel:#131d2a;--line:#29394c;--text:#e9edf2;--muted:#93a2b6;--accent:#d4ff68;--cyan:#8cdae6;font-family:Inter,"Microsoft YaHei","PingFang SC",system-ui,sans-serif}*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;background:radial-gradient(ellipse at 70% 35%,#142a3d55,transparent 65%),var(--bg);color:var(--text);font-size:14px;line-height:1.7;display:flex;height:100dvh;overflow:hidden}button,input,textarea,select{font:inherit}button,a,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}button:focus-visible,a:focus-visible,textarea:focus-visible,select:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:3px}button{color:var(--text);border:0;background:transparent}a{color:inherit;text-decoration:none}.subtle{color:var(--muted);font-size:12px}.sidebar{width:258px;flex:none;background:linear-gradient(180deg,#131c29,#0e151e);border-right:1px solid var(--line);padding:26px 17px 16px;display:flex;flex-direction:column;gap:16px;z-index:5}.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:650;padding:0 9px}.brand small{display:block;color:var(--muted);font-size:9px;letter-spacing:2px;line-height:1.5}.new-chat{margin-top:13px;width:100%;border:1px solid #587a4555;border-radius:12px;background:#d4ff680b;padding:11px 15px;text-align:left;color:var(--accent);font-weight:600}.new-chat:hover{background:#d4ff6818}.new-chat span{font-size:19px;margin-right:8px}.history-label{display:flex;justify-content:space-between;color:#a6b3c5;font-size:12px;padding:10px 11px 0}.history-label span{color:#65778d;font-size:10px}.chat-history{overflow:auto;flex:1;min-height:0}.chat-history button{display:block;width:100%;padding:11px;border-radius:9px;font-size:13px;text-align:left;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-bottom:4px;color:#bcc7d6}.chat-history button:hover{background:#202d3e}.chat-history button.active{background:#253326;color:var(--accent)}.chat-history p{padding:0 11px}.sidebar-footer{border-top:1px solid var(--line);padding:15px 8px 0}.sidebar-footer>a{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-bottom:16px}.account-open{display:flex;align-items:center;gap:10px;padding:0;width:100%;text-align:left}.avatar{display:inline-grid;place-items:center;background:#d4ff6812;border:1px solid #d4ff6830;border-radius:9px;color:var(--accent);width:32px;height:32px;font-size:12px;font-weight:650}.quiet{font-size:12px;color:var(--muted);padding:7px 0}.chat-main{display:flex;flex:1;min-width:0;flex-direction:column}.chat-topbar{height:78px;min-height:78px;border-bottom:1px solid #29394c77;padding:0 34px;display:flex;align-items:center;justify-content:space-between;gap:15px}.chat-topbar>div{display:flex;align-items:center;gap:16px}.chat-topbar strong{font-size:16px;font-weight:550}.knowledge-dot{color:#8fabb5;font-size:11px}.knowledge-dot:before{content:"";display:inline-block;width:5px;height:5px;border-radius:50%;background:var(--accent);margin-right:7px;box-shadow:0 0 8px #d4ff6866}.balance-chip{font-size:12px;color:#c8dbb6;border:1px solid #4a654133;border-radius:20px;padding:5px 12px;background:#d4ff6806}.icon-button{width:32px;height:32px;font-size:21px;color:var(--muted);border-radius:8px}.icon-button:hover{background:#253141}#sidebar-toggle{display:none}.chat-scroll{flex:1;min-height:0;overflow:auto;scroll-behavior:smooth}.welcome{max-width:770px;margin:auto;padding:clamp(35px,8vh,100px) 32px 28px;text-align:center}.welcome-mark{font-size:39px;color:var(--accent);text-shadow:0 0 30px #d4ff6840;line-height:1.2}.eyebrow{font-size:9px;letter-spacing:3px;color:#6f839c;margin:15px 0 18px}h1{font-size:clamp(24px,3vw,33px);font-weight:550;letter-spacing:.3px;margin:0 0 12px}.welcome-copy{color:#a2b0c2;margin:0;font-size:14px;line-height:1.9}.starters{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:37px auto 0;max-width:635px}.starters button{padding:16px 18px;border:1px solid #34465c77;background:linear-gradient(135deg,#17253588,#111c2888);border-radius:13px;text-align:left;font-size:12px;line-height:1.7;color:#c1cedd}.starters button span{display:block;color:#778ba4;font-size:10px;margin-bottom:7px;letter-spacing:.5px}.starters button:hover{border-color:#d4ff6860;background:#1c2b37}.messages{max-width:850px;margin:auto;padding:25px 38px 35px}.message{margin:0 0 33px;overflow-wrap:anywhere}.message-user{display:flex;flex-direction:column;align-items:flex-end}.message-user .message-body{background:#263323;border:1px solid #b4db6540;border-radius:16px 16px 4px 16px;padding:13px 18px;max-width:85%}.message-heading{display:flex;align-items:center;gap:9px;margin-bottom:12px;color:#c6dfaa;font-size:12px;font-weight:550}.message-body{white-space:pre-wrap;line-height:1.9;font-size:14px}.message-assistant .message-body{padding-left:41px}.message-meta{font-size:11px;color:#6f859d;margin:12px 0 0 41px}.composer-wrap{padding:0 30px 18px;background:linear-gradient(0deg,var(--bg) 80%,transparent);width:100%;flex:none}.composer{max-width:770px;margin:auto;padding:15px 17px 12px;border:1px solid #3c5068;border-radius:20px;background:linear-gradient(135deg,#182436,#111b28);box-shadow:0 8px 32px #0002,inset 0 1px #b3ddff06}.composer:focus-within{border-color:#718c5990;box-shadow:0 0 0 3px #d4ff6807}.composer textarea{width:100%;resize:none;min-height:55px;max-height:200px;border:0;outline:none!important;background:transparent;color:var(--text);padding:0 4px;font-size:14px;line-height:1.7}.composer textarea::placeholder{color:#8091a7}.composer-toolbar{display:flex;align-items:center;gap:10px;margin-top:9px}.teacher-picker{display:flex;align-items:center;gap:8px;font-size:11px;color:#718ba3}.teacher-picker select{background:#152230;border:1px solid #34465a;border-radius:8px;padding:5px 7px;color:#bcd0aa;font-size:12px;max-width:245px}.question-count{font-size:10px;color:#6c8199;margin-left:auto}.send{width:35px;height:35px;border-radius:50%;background:var(--accent);color:#1a2811;font-size:23px;line-height:1;flex:none}.send:hover:not(:disabled){background:#e4ff9c}.status{color:#a4c68d;font-size:12px;max-width:770px;margin:0 auto 10px;min-height:0}.status:empty{display:none}.status.error{color:#eaaa9c}.waiting{color:#9bacbe;display:flex;align-items:center;gap:8px;padding-left:41px;font-size:12px}.waiting i{width:5px;height:5px;border-radius:50%;background:var(--accent);animation:wait-pulse 1.2s infinite}.waiting i:nth-child(2){animation-delay:.15s}.waiting i:nth-child(3){animation-delay:.3s}@keyframes wait-pulse{50%{opacity:.25}}.recover{border:1px solid #b4db6555;border-radius:9px;color:var(--accent);padding:7px 13px;font-size:12px;margin:12px 0 0 41px}.account-dialog{width:min(430px,calc(100% - 32px));border:1px solid #3c5068;border-radius:18px;padding:27px;color:var(--text);background:linear-gradient(145deg,#182536,#0e1824);box-shadow:0 25px 80px #0009}.account-dialog::backdrop{background:#030811aa;backdrop-filter:blur(5px)}.dialog-heading{display:flex;align-items:center;justify-content:space-between}.dialog-heading h2{font-size:20px;margin:0}.account-dialog label{display:block;font-size:12px;color:#b2c0d0;margin-top:16px}.account-dialog input{display:block;width:100%;background:#0e1722;color:var(--text);border:1px solid #344960;border-radius:9px;padding:10px 12px;margin-top:7px;font-size:13px}.account-dialog .primary{display:block;width:100%;background:var(--accent);color:#1c2b10;border-radius:9px;padding:10px;font-weight:650;margin-top:20px}.account-dialog .quiet{display:block;margin:10px auto 0}.account-dialog .status{margin-top:12px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
@media(max-width:1050px){.sidebar{width:220px}.chat-topbar{padding:0 24px}.knowledge-dot{display:none}.welcome{padding-top:50px}}
@media(max-width:700px){.sidebar{display:none;position:fixed;inset:0 auto 0 0;width:260px;box-shadow:20px 0 80px #0008}.sidebar.open{display:flex}#sidebar-toggle{display:inline-block}.chat-topbar{height:64px;min-height:64px;padding:0 14px}.chat-topbar>div{gap:8px}.balance-chip{font-size:10px;padding:4px 8px}.welcome{padding:42px 20px 15px}.starters{gap:8px;margin-top:25px}.starters button{padding:11px;font-size:11px}.messages{padding:22px 18px}.message-assistant .message-body{padding-left:0}.message-meta{margin-left:0}.message-user .message-body{max-width:94%}.composer-wrap{padding:0 12px 12px}.composer{padding:13px;border-radius:16px}.teacher-picker select{max-width:180px}.question-count{display:none}.waiting{padding-left:0}}
@media(prefers-reduced-motion:reduce){.waiting i{animation:none}.chat-scroll{scroll-behavior:auto}}
.sidebar-backdrop{display:none}.message-assistant>.quiet{margin-left:41px}
@media(max-width:700px){.sidebar-backdrop:not([hidden]){display:block}.sidebar-backdrop{position:fixed;inset:0;background:#03081188;backdrop-filter:blur(2px);z-index:4;width:100%;height:100%}.message-assistant>.quiet{margin-left:0}.send{margin-left:auto}}
@media(max-height:760px) and (min-width:701px){.welcome{padding-top:24px}.eyebrow{margin:10px 0 12px}.starters{margin-top:24px}}

.attach-image{width:32px;height:32px;border:1px solid #41566c;border-radius:10px;color:#c2d6ae;font-size:22px;line-height:1;flex:none}.attach-image:hover:not(:disabled){background:#b4db6514;border-color:#829d6c}.composer.dragging{border-color:var(--accent);box-shadow:0 0 0 3px #d4ff681a}.attachments{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:13px}.attachment{position:relative;width:92px}.image-preview{padding:0;border:1px solid #496077;border-radius:12px;overflow:hidden;background:#0a1420;display:block}.attachment .image-preview{width:92px;height:76px}.image-preview img{display:block;width:100%;height:100%;object-fit:cover}.attachment-name{display:block;white-space:nowrap;text-overflow:ellipsis;overflow:hidden;font-size:10px;color:#91a5bb;margin-top:5px}.attachment-remove{position:absolute;right:-5px;top:-5px;border-radius:50%;background:#2d4054;border:1px solid #73849b;width:21px;height:21px;color:#fff;font-size:15px;line-height:1}.message-images{display:flex;flex-wrap:wrap;gap:10px;margin-top:10px;white-space:normal}.message-images .image-preview{width:148px;height:112px}.image-dialog{max-width:min(1100px,94vw);padding:32px 12px 12px;border:1px solid #41566c;border-radius:16px;background:#0e1824}.image-dialog::backdrop{background:#030811bb;backdrop-filter:blur(5px)}.image-dialog .icon-button{position:absolute;right:5px;top:2px;color:#dce7f5;font-size:22px}.image-dialog img{display:block;max-width:calc(94vw - 26px);max-height:80dvh;object-fit:contain}.message-user .message-body{white-space:pre-wrap}
@media(max-width:700px){.composer-toolbar{gap:7px}.teacher-picker{gap:5px}.teacher-picker select{max-width:160px}.message-images .image-preview{width:112px;height:86px}}
.qa-rich{white-space:normal!important;font-size:15px;line-height:1.95;color:#e1e9f0;overflow-wrap:anywhere}.qa-rich>p{white-space:pre-line;margin:0 0 20px}.qa-rich h2,.qa-rich h3,.qa-rich h4{color:#f4f8f1;line-height:1.55;margin:30px 0 14px}.qa-rich h2{font-size:21px}.qa-rich h3{font-size:18px}.qa-rich h4{font-size:16px}.qa-rich strong{color:#e8f3c6}.qa-rich ul,.qa-rich ol{padding-left:25px;margin:14px 0 22px}.qa-rich li{margin:7px 0}.qa-rich code{font-size:.92em;background:#182a37;border-radius:4px;padding:2px 5px}.qa-rich pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#101d28;padding:18px;border:1px solid #2c414f;border-radius:12px}.qa-table-wrap{overflow-x:auto;margin:20px 0}.qa-rich table{border-collapse:collapse;width:100%;font-size:14px}.qa-rich th,.qa-rich td{padding:11px 14px;border:1px solid #2c414f;text-align:left;min-width:110px}.qa-rich th{background:#1a303a;color:#dfeec6}.qa-citation{font-size:12px;margin:0 3px;color:#b2d87f}.qa-diagram{margin:24px 0;background:#0c1924;border:1px solid #2c4554;border-radius:18px;padding:18px;overflow:hidden}.qa-diagram figcaption{font-weight:650;color:#e2f0dc;margin:0 0 12px}.qa-diagram svg{width:100%;height:auto;display:block}.qa-diagram small{color:#93a9b7;font-size:12px}.qa-web-sources{margin-top:30px;padding-top:20px;border-top:1px solid #2a3c48}.qa-web-sources h3{font-size:16px;color:#dce9c5;margin:0 0 16px}.qa-web-sources ol{padding-left:22px;font-size:13px}.qa-web-sources li{margin:10px 0}.qa-web-sources a{color:#b4dbbf;overflow-wrap:anywhere}.qa-web-sources small{display:block;color:#8d9ea9;margin-top:3px}.qa-reference-gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.qa-reference-gallery figure{margin:0;min-width:0}.qa-reference-gallery button{padding:0;border:1px solid #304754;border-radius:12px;overflow:hidden;background:#142331;width:100%;cursor:zoom-in}.qa-reference-gallery img{display:block;width:100%;height:155px;object-fit:contain}.qa-reference-gallery figcaption{color:#a9bdc8;font-size:12px;line-height:1.6;margin-top:6px}.qa-web-status{font-size:12px;color:#9aafba;margin-top:20px}@media(max-width:600px){.qa-rich{font-size:14px}.qa-rich h2{font-size:19px}.qa-diagram{padding:10px;margin:18px 0}.qa-reference-gallery{grid-template-columns:1fr}.qa-reference-gallery img{height:210px}.qa-rich th,.qa-rich td{padding:9px}}
.qa-rich blockquote{margin:20px 0;padding:12px 18px;border-left:3px solid #a4ce70;background:#a4ce7009;color:#d3e5ce;white-space:pre-line}.qa-rich hr{border:0;border-top:1px solid #293e4b;margin:28px 0}

.qa-library-references{margin:28px 0 0 41px;padding-top:20px;border-top:1px solid var(--line)}.qa-library-references>h3{font-size:14px;color:#c6dfaa;margin:0 0 16px;font-weight:550}.qa-library-card{border:1px solid #29394c88;border-radius:12px;padding:16px;margin:0 0 14px;scroll-margin:20px;background:#131d2a66}.qa-library-card h4{font-size:13px;margin:0 0 12px;color:#c6d5c2;font-weight:550}.qa-library-links{display:flex;flex-wrap:wrap;gap:12px;margin-top:12px}.qa-library-links a{font-size:12px;color:#a8c4b6;text-decoration:underline;text-underline-offset:3px}.qa-library-card>p{margin:10px 0 0;font-size:11px}
.qa-artwork-preview{margin:0;min-height:70px;border:1px solid #29394c77;border-radius:9px;overflow:hidden;background:#0c1119}.qa-artwork-preview>p{padding:12px}.qa-artwork-preview img,.qa-artwork-preview canvas.report-animation{display:block;width:auto;max-width:100%;max-height:280px;height:auto;object-fit:contain;cursor:zoom-in;margin:auto}.report-animation-stage{display:block;position:relative;width:fit-content;max-width:100%;margin:auto}.report-animation-controls{position:absolute;left:8px;bottom:8px;z-index:3;display:flex;align-items:center;gap:4px;padding:4px;border:1px solid #3c506877;border-radius:9px;background:#101721ed;color:var(--text);font-size:11px;line-height:1;max-width:calc(100% - 16px);opacity:0;pointer-events:none;transition:opacity .15s}.report-animation-stage:hover .report-animation-controls,.report-animation-stage:focus-within .report-animation-controls{opacity:1;pointer-events:auto}.report-animation-controls button{display:inline-flex;align-items:center;justify-content:center;flex:none;width:32px;height:32px;padding:6px;border-radius:6px;color:#d2dfcc}.report-animation-controls button:hover{background:#29394c}.report-animation-controls button svg{display:block;width:20px;height:20px;pointer-events:none}.report-animation-position{padding:0 5px;white-space:nowrap;font-variant-numeric:tabular-nums}.report-lightbox{position:fixed;inset:0;z-index:999;display:none;overflow:auto;padding:20px;background:#080e16f5;cursor:zoom-out;-webkit-overflow-scrolling:touch}.report-lightbox.open{display:block}.report-lightbox .lb-hint{margin:0 0 18px;text-align:center;font-size:12px;color:var(--muted)}.report-lightbox .report-animation-stage{max-width:none}.report-lightbox canvas.report-animation-large,.report-lightbox img{display:block;width:auto;max-width:none;max-height:none;margin:auto;cursor:default}.report-lightbox .report-animation-controls{position:sticky;width:fit-content;margin-top:12px;opacity:1;pointer-events:auto}
body *{scrollbar-width:thin;scrollbar-color:#354457 transparent}body *::-webkit-scrollbar{width:7px;height:7px}body *::-webkit-scrollbar-track{background:transparent}body *::-webkit-scrollbar-thumb{background:#354457;border:2px solid var(--bg);border-radius:10px}body *::-webkit-scrollbar-thumb:hover{background:#53657b}body *::-webkit-scrollbar-corner{background:transparent}.chat-scroll{scrollbar-gutter:stable}.qa-web-sources{margin-left:41px}
@media(max-width:700px){.qa-library-references,.qa-web-sources{margin-left:0}.qa-library-card{padding:12px}.report-lightbox{padding:14px}}@media(hover:none){.report-animation-controls{opacity:1;pointer-events:auto}}@media(prefers-reduced-motion:reduce){.report-animation-controls{transition:none}}
.composer-toolbar{flex-wrap:wrap}.reasoning-picker select{min-width:68px;max-width:110px}.send{margin-left:auto}.question-count+.send{margin-left:0}@media(max-width:700px){.teacher-picker:not(.reasoning-picker) select{max-width:120px}.composer-toolbar>.send{margin-left:auto}}
@media(max-width:360px){.composer-toolbar .teacher-picker>span{display:none}}

.qa-credit-estimate,.qa-estimate-note{margin:4px 14px 8px;font-size:12px;line-height:1.5;color:var(--muted)}.qa-credit-estimate{color:var(--text)}


.material-wish-controls{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin:0 0 9px}.material-wish-controls select{background:#152332;border:1px solid #3a5067;color:var(--text);border-radius:9px;padding:7px 10px;font:inherit;font-size:12px;max-width:100%}.material-wish-hint{margin:0;color:#9cafc3;font-size:11px;line-height:1.6;flex-basis:100%}.material-wish-result{margin:16px 0 12px 41px;padding:18px;border:1px solid #6d8f5b;border-radius:14px;background:#b4db6508;overflow-wrap:anywhere;font-size:13px;line-height:1.7}.material-wish-result h3{margin:0 0 5px;font-size:15px}.material-wish-result p{margin:6px 0}.material-wish-state{color:#cedca5}.material-wish-actions{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}.material-wish-actions button{border:1px solid #596d46;border-radius:8px;padding:7px 11px;color:#d5e8ac;background:#b4db6510;font-size:12px}.material-wish-result ol{padding-left:20px;color:#b7c7d5}.material-wish-result li{margin:7px 0}.material-wish-result pre{max-height:340px;overflow:auto;white-space:pre;font-size:11px;background:#08111b;padding:12px}.material-wish-result summary{cursor:pointer;color:#b4db65}@media(max-width:700px){.material-wish-result{margin-left:0;padding:13px}.material-wish-controls select{min-height:36px}}
.material-wish-graph{display:block;width:100%;height:420px;border:1px solid #414952;border-radius:9px;margin:12px 0;background:#171a1e}@media(max-width:700px){.material-wish-graph{height:330px}}

/* Mode and UE target stay below the site navigation, outside the scrolling conversation. */
.chat-main>.material-wish-controls{flex:none;margin:0;padding:14px 30px 12px;border-bottom:1px solid var(--line);background:#101923}.chat-main>.material-wish-controls select{min-height:36px}.chat-main>.material-wish-controls .material-wish-hint{max-width:1100px}@media(max-width:700px){.chat-main>.material-wish-controls{padding:10px 14px;gap:8px}.chat-main>.material-wish-controls .material-wish-hint{font-size:10px}}

.material-wish-view-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.material-wish-view-actions>span:first-child,.material-wish-view-actions>strong{margin-right:auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.material-wish-view-actions button{flex:none;min-height:34px;padding:5px 12px;border:1px solid #61774a;border-radius:7px;background:#283522;color:#d8ecb5;font-size:12px}.material-wish-dialog{position:fixed;inset:0;width:100vw;height:100dvh;max-width:none;max-height:none;margin:0;padding:0;border:0;background:#171a1e;color:#e5e8ec}.material-wish-dialog::backdrop{background:#000b}.material-wish-expanded-panel{display:flex;flex-direction:column;width:100%;height:100%;min-height:0;background:#171a1e}.material-wish-expanded-panel>.material-wish-view-actions{flex:none;min-height:48px;padding:7px 14px;background:#101923;border-bottom:1px solid #3b4655}.material-wish-expanded-panel>.material-wish-graph{flex:1;height:0;min-height:0;margin:0;border:0;border-radius:0}.material-wish-view-notice{color:#d5ddad;font-size:11px}.material-wish-expanded-panel:fullscreen{width:100vw;height:100dvh}@media(max-width:700px){.material-wish-expanded-panel>.material-wish-view-actions{padding:6px 10px;gap:6px}.material-wish-expanded-panel>.material-wish-view-actions strong{flex-basis:100%;font-size:12px}.material-wish-view-actions button{min-height:36px}}
.material-look{border:1px solid #3c5162;border-radius:10px;background:#101923;margin:14px 0;padding:12px}.material-look-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:10px}.material-look-toolbar strong{flex:1;min-width:180px}.material-look-toolbar label{display:flex;align-items:center;gap:5px;font-size:11px;color:#b7c7d5}.material-look select,.material-look input[type=number]{color:#e1e9f2;background:#1a2837;border:1px solid #405469;border-radius:5px;padding:5px;min-height:32px;font:inherit}.material-look-body{display:grid;grid-template-columns:minmax(0,1fr) minmax(180px,290px);gap:16px;margin-top:12px}.material-look-viewport{display:flex;align-items:center;justify-content:center;background:#090e15;border:1px solid #2c3d4e;border-radius:8px;min-width:0}.material-look canvas{display:block;width:100%;max-width:420px;aspect-ratio:1;height:auto}.material-look-parameters{max-height:420px;overflow-y:auto;padding-right:6px;min-width:0}.material-look-parameter{border-bottom:1px solid #263748;padding:8px 0}.material-look-parameter>label{display:block;font-size:11px;color:#cad9e7}.material-look-parameter input[type=range]{width:calc(100% - 90px);vertical-align:middle;accent-color:#b4db65}.material-look-parameter input[type=number]{width:78px;margin-left:6px;min-width:0}.material-look-vector{display:flex;gap:4px}.material-look-vector label{font-size:10px;flex:1;min-width:0}.material-look-vector input[type=number]{display:block;width:100%;margin:0}.material-look-playback{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-top:10px}.material-look-playback button{border:1px solid #61774a;border-radius:6px;padding:6px 10px;background:#283522;color:#d8ecb5;min-height:34px}.material-look-playback>input{flex:1;min-width:100px;accent-color:#b4db65}.material-look-playback label{display:flex;gap:6px;align-items:center;font-size:11px}.material-look-playback label input{width:85px}.material-look-status{color:#a4bacd;font-size:11px}.material-look-findings{padding-left:18px;font-size:11px;color:#b1c4d4}.material-look-findings [data-severity=error]{color:#ffada8}.material-look-findings [data-severity=warning]{color:#f0d198}.material-wish-actions button:disabled{opacity:.4;cursor:not-allowed}@media(max-width:700px){.material-look{padding:9px}.material-look-body{grid-template-columns:1fr}.material-look-parameters{max-height:280px}.material-look-toolbar strong{flex-basis:100%}.material-look input[type=range]{min-height:28px}.material-look-viewport canvas{max-width:360px}}

.material-look-parameter>label:has(input[type=range]){display:grid;grid-template-columns:minmax(0,1fr) 78px;gap:5px 8px;align-items:center}.material-look-parameter>label>span{grid-column:1/-1}.material-look-parameter>label input[type=range]{width:100%;margin:0}.material-look-parameter>label input[type=number]{width:100%;margin:0}
.material-function-interface{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr) minmax(0,1fr);gap:20px;align-items:center;padding:20px;margin:16px 0;border:1px solid #445a72;border-radius:12px;background:#131d2a;overflow-wrap:anywhere}
.material-function-interface>div>div{padding:7px 0;font-size:13px;color:#bbcadb}
.material-function-core{padding:20px 12px;text-align:center;border:1px solid #889b5b;border-radius:10px;background:#283522}
.material-function-core span{font-size:12px;color:#bac8ab}
.material-delivery-choice{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:16px 0}.material-delivery-choice select{max-width:100%;padding:8px 12px;border:1px solid #445a72;border-radius:8px;background:#182838;color:#e9edf2}
@media(max-width:600px){.material-function-interface{grid-template-columns:1fr;gap:12px}}
.qa-mode-switch{display:inline-flex;align-items:center;gap:3px;max-width:100%;padding:3px;border:1px solid #27333f;border-radius:7px;background:#101822}
.qa-mode-switch button{flex:1;min-width:106px;min-height:30px;height:30px;padding:0 14px;border:0;border-radius:5px;background:transparent;color:#a0adbc;font:inherit;font-size:12px;font-weight:500;line-height:1.3;white-space:nowrap;box-shadow:none;transition:background .16s,color .16s}
.qa-mode-switch button:hover:not(:disabled){background:#1b2531;color:#e7edf3;filter:none}
.qa-mode-switch button.active,.qa-mode-switch button.active:hover:not(:disabled){background:#283440;color:#edf2f7;box-shadow:0 1px 3px #0003}
.qa-mode-switch button:focus-visible{outline:2px solid #b9d7ed;outline-offset:2px}
.qa-mode-switch button:disabled{opacity:.5;cursor:not-allowed}
/* Three distinct outputs share one workspace; the active mode stays visible. */
.chat-main>.material-wish-controls{flex:none;margin:0;padding:10px 26px 9px;gap:6px 14px;background:#101822;border-bottom:1px solid #29394c77}
.qa-mode-switch{display:inline-flex;width:auto;max-width:100%;padding:3px;gap:3px;border:1px solid #344151;border-radius:10px;background:#0c141f}
.qa-mode-switch button{position:relative;display:flex;align-items:center;justify-content:center;min-width:106px;height:36px;min-height:36px;padding:0 16px;border:1px solid transparent;border-radius:7px;text-align:center;white-space:nowrap;color:#c3ceda;background:transparent}
.qa-mode-switch button[data-mode=qa]{--mode-color:#c9ee8a;--mode-bg:#b6ed7310}
.qa-mode-switch button[data-mode=material]{--mode-color:#e7bd7c;--mode-bg:#e7bd7c12}
.qa-mode-switch button[data-mode=image]{--mode-color:#b6abfa;--mode-bg:#b6abfa12}
.qa-mode-switch button.active,.qa-mode-switch button.active:hover:not(:disabled){border-color:var(--mode-color);background:var(--mode-bg);box-shadow:none;color:#f0f4f8}
.qa-mode-switch button:hover:not(:disabled){background:#22303e;border-color:#6b7c90}
.creative-mode-title{font-size:13px;font-weight:650;color:var(--mode-color)}
.creative-mode-description,.creative-mode-delivery{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.chat-main>.material-wish-controls .material-wish-hint{flex:1 1 360px;min-width:0;font-size:12px;line-height:1.7;color:#a9b8ca;margin:0}
.creative-version{display:flex;align-items:center;gap:8px;font-size:12px;color:#e7bd7c}
.chat-topbar{height:36px;min-height:36px;padding-inline:28px}
.chat-topbar strong{font-size:13px}
.creative-output-label{font-size:12px;color:var(--muted)}
body[data-creative-mode=material] .chat-topbar strong{color:#e7bd7c}
body[data-creative-mode=material] .composer{border-color:#ac855551}
.creative-intent-notice{border:1px solid #9f794d;background:#30261b;border-radius:10px;padding:12px;margin-bottom:12px;font-size:12px}
.creative-intent-notice p{margin:0 0 8px;color:#f2d8b2}
.creative-intent-notice button{border:1px solid #8d7658;border-radius:7px;padding:6px 10px;margin:3px 5px 0 0;color:#f2dec1;background:#403323}
.creative-image-panel{position:absolute;inset:0;display:flex;min-height:0;width:100%;overflow:hidden}
.creative-image-panel iframe{flex:1;width:100%;height:100%;min-height:0;border:0;background:#101318}
.creative-image-loading{position:absolute;inset:30px auto auto 30px;color:#b6abfa;pointer-events:none}
.welcome{padding:24px 32px 18px}
.welcome-mark,.welcome>.eyebrow{display:none}
.welcome h1{font-size:24px;margin:0 0 6px}
.welcome-copy{font-size:13px;line-height:1.7}
.starters{gap:8px;margin-top:18px}
.starters button{padding:10px 14px}
.starters button span{margin-bottom:3px}
@media(max-width:1050px){.qa-mode-switch button{padding-inline:13px}}
@media(max-width:700px){.chat-main>.material-wish-controls{padding:8px 12px;gap:6px 10px}.qa-mode-switch{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));width:100%}.qa-mode-switch button{min-width:0;padding:0 6px;height:36px;min-height:36px}.creative-mode-title{font-size:12px}.chat-main>.material-wish-controls .material-wish-hint{font-size:11px}.chat-topbar{padding-inline:12px;height:36px;min-height:36px}.creative-output-label{font-size:10px;max-width:50%;text-align:right}.welcome{padding:16px 18px 12px}.welcome h1{font-size:21px}.welcome-copy{font-size:12px}.starters{margin-top:14px}.starters button{padding:9px 10px}}


.creative-turn-mode{font-size:10px;color:var(--muted);text-align:right;margin-bottom:5px}

/* Keep the reading column clear and the input area compact. */
.qa-page{--muted:#aab8c9}
.messages{max-width:1040px;padding:24px 36px 30px}
.message{margin-bottom:28px}
.message-body,.qa-rich{font-size:16px;line-height:1.85;color:#e6edf5}
.qa-rich>p{margin-bottom:16px}
.qa-rich h2,.qa-rich h3,.qa-rich h4{margin-top:24px;margin-bottom:12px;color:#f3f6fa}
.qa-rich li{margin:6px 0}
.message-heading{font-size:13px;color:#d4e3bf}
.message-meta,.creative-turn-mode{font-size:12px;color:#a4b3c6}
.qa-library-references>h3,.qa-library-card h4{font-size:14px;color:#d6e4c3}
.qa-library-card>p,.qa-library-links a,.qa-reference-gallery figcaption{font-size:13px;color:#aebed0}
.sidebar .history-label{color:#b9c6d6}
.sidebar .history-label span{color:#97a9bf;font-size:11px}
.chat-history button{font-size:14px;color:#cbd5e3;padding:10px 11px}
.chat-history button.active{color:#d4ff85}
.composer-wrap{padding:4px 30px 12px}
.composer{max-width:820px;padding:10px 14px 8px;border-radius:14px}
.composer textarea{display:block;min-height:52px;max-height:144px;padding:2px 3px;font-size:15px;line-height:1.6}
.composer textarea::placeholder{color:#a5b4c7}
.composer-toolbar{gap:8px;margin-top:6px}
.teacher-picker{font-size:12px;color:#a5b4c7}
.teacher-picker select{font-size:13px;min-height:32px;padding:4px 8px}
.reasoning-picker select{max-width:128px}
.attach-image,.send{width:32px;height:32px}
.question-count{font-size:11px;color:#a5b4c7}
.composer-billing{display:flex;align-items:center;gap:9px;margin-left:auto;flex-wrap:wrap}
.composer-billing .qa-credit-estimate{margin:0;color:#c4d2e2;font-size:12px;line-height:1.6;white-space:nowrap}
.qa-billing-help{position:relative;color:#a5b4c7;font-size:12px;line-height:1.6;white-space:nowrap}
.qa-billing-help summary{cursor:pointer;text-decoration:underline;text-underline-offset:3px;list-style:none}
.qa-billing-help summary::-webkit-details-marker{display:none}
.qa-billing-help summary:hover{color:#e2ecd7}
.qa-billing-help summary:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.qa-billing-help[open] summary{color:#d4ff85}
.qa-billing-help .qa-estimate-note{position:absolute;right:0;bottom:26px;z-index:7;width:min(330px,calc(100vw - 60px));margin:0;padding:12px 14px;border:1px solid #516174;border-radius:10px;background:#1a2635;box-shadow:0 8px 28px #0007;color:#d6e0ec;font-size:13px;line-height:1.7;white-space:normal}
.status{max-width:1000px;margin-bottom:6px;font-size:13px}
.status.error{color:#f3b8ac}
.qa-image-action{display:inline-flex;align-items:center;gap:5px;min-height:32px;padding:4px 9px;border:1px solid #b6abfa55;border-radius:9px;color:#d5ceff;background:#b6abfa0d;font-size:11px;white-space:nowrap}
.qa-image-action:hover:not(:disabled){background:#b6abfa1c;border-color:#b6abfa99;color:#fff}
.qa-image-action:disabled{opacity:.45}
@media(max-width:700px){
 .qa-page .chat-topbar{height:36px;min-height:36px}
 .messages{padding:18px 16px 22px}
 .message-body,.qa-rich{font-size:15px;line-height:1.85}
 .qa-rich h2{font-size:20px}.qa-rich h3{font-size:18px}
 .composer-wrap{padding:4px 12px 10px}
 .composer{padding:9px 11px 7px;border-radius:13px}
 .composer textarea{font-size:16px;min-height:55.2px}
 .composer-toolbar{display:grid;grid-template-columns:32px minmax(0,1fr) minmax(60px,100px) 32px;gap:5px 7px}
 .composer-toolbar>.attach-image{grid-area:1/1}
 .composer-toolbar>.teacher-picker:not(.reasoning-picker){grid-area:1/2}
 .composer-toolbar>.reasoning-picker{grid-area:1/3}
 .composer-toolbar>.send{grid-area:1/4;margin:0}
 .composer-toolbar>.composer-billing{grid-area:2/1/3/-1;margin:0;justify-content:space-between}
 .composer-toolbar .teacher-picker>span{display:none}
 .teacher-picker:not(.reasoning-picker) select,.reasoning-picker select{min-width:0;max-width:100%;width:100%}
 .composer-billing .qa-credit-estimate,.qa-billing-help{font-size:11px}
 .qa-image-action{grid-area:2/1/3/3;justify-self:start;min-height:28px;font-size:10px}
 .composer-toolbar>.composer-billing{grid-area:3/1/4/-1}
}
@media(max-height:560px) and (min-width:701px){
 .qa-page .topbar.site-header{grid-template-rows:42px 34px;height:76px;min-height:76px}
 .qa-page .topbar.site-header>.site-tabs a{padding-block:6px}
 .chat-main>.material-wish-controls{padding-block:6px}
 .chat-main>.material-wish-controls>.material-wish-hint{display:none}
 .composer-wrap{padding-bottom:8px}
 .welcome{padding-top:14px}
}

/* Keep the shared mode bar anchored to the content column in every mode. */
.qa-layout{--creative-sidebar-width:258px;--creative-toolbar-height:64px}
.chat-main>.material-wish-controls{position:relative;z-index:2;box-sizing:border-box;flex-wrap:nowrap;height:var(--creative-toolbar-height);min-height:var(--creative-toolbar-height);padding:10px 26px;overflow:hidden}
.chat-main>.material-wish-controls>.qa-mode-switch{flex:none}
.chat-main>.material-wish-controls>.material-wish-hint{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chat-main>.material-wish-controls>.creative-version{flex:none;white-space:nowrap}
body[data-creative-mode=image] .chat-main>.material-wish-controls{margin-left:var(--creative-sidebar-width)}
.qa-page .chat-main>.chat-topbar{display:flex;flex:none;height:48px;min-height:48px;padding:0 23px;gap:12px}
.qa-page .chat-main>.chat-topbar strong{font-size:14px;font-weight:550}
@media(min-width:701px){.qa-page #sidebar-toggle{display:none}}
@media(max-width:1050px){.qa-layout{--creative-sidebar-width:220px}}
@media(max-width:700px){
 .qa-layout{--creative-sidebar-width:0px;--creative-toolbar-height:96px}
 .chat-main>.material-wish-controls{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-rows:44px 26px;align-content:center;gap:2px 8px;padding:8px 12px}
 .chat-main>.material-wish-controls>.qa-mode-switch{grid-area:1/1/2/-1}
 .chat-main>.material-wish-controls>.material-wish-hint{grid-area:2/1/3/2;max-width:100%;font-size:11px}
 .chat-main>.material-wish-controls>.creative-version{grid-area:2/2/3/3;font-size:10px;gap:4px}
 .chat-main>.material-wish-controls .creative-version select{min-height:26px;padding:2px 4px;font-size:11px}
 .qa-page .chat-main>.chat-topbar{padding-inline:12px}
 .qa-page .qa-layout>.sidebar{top:var(--creative-toolbar-height)}
}