.prepare-ask-overlay{--ask-bg:#0b1525;--ask-surface:#111e31;--ask-input:#0b1525;--ask-text:#e7eef7;--ask-muted:#a5b5c9;--ask-accent:#9bdbe8;--ask-line:#a5c7eb24;position:fixed;inset-inline:0;top:var(--prepare-ask-viewport-top,0);height:var(--prepare-ask-viewport-height,100dvh);z-index:1600;color:var(--ask-text);overscroll-behavior:contain}.prepare-ask-backdrop{position:absolute;inset:0;background:#030b18a6;backdrop-filter:blur(5px)}.prepare-ask-panel{position:absolute;inset-block-start:max(16px,var(--safe-top,env(safe-area-inset-top,0px)));inset-block-end:max(16px,var(--safe-bottom,env(safe-area-inset-bottom,0px)));inset-inline-end:16px;width:min(780px,calc(100% - 32px));display:flex;flex-direction:column;min-width:0;min-height:0;border:1px solid var(--ask-line);border-radius:24px;background:var(--ask-bg);box-shadow:0 24px 80px #020c2190;overflow:hidden}.prepare-ask-panel>header{position:relative;z-index:3;display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 16px;border-bottom:1px solid var(--ask-line);flex-shrink:0}.prepare-ask-header-tools,.prepare-ask-identity{display:flex;align-items:center;gap:8px;min-width:0}.prepare-ask-identity>div:last-child{min-width:0}.prepare-ask-panel>header h2{margin:0;color:var(--ask-text);font-size:17px;font-weight:650;line-height:1.35;white-space:nowrap}.prepare-ask-panel>header p{margin-top:3px;font-size:11px;color:var(--ask-muted)}.prepare-ask-icon-button{display:grid;place-items:center;flex:none;width:40px;height:44px;border-radius:12px;color:var(--ask-muted)}[dir=rtl] .prepare-ask-back svg{transform:rotate(180deg)}.prepare-ask-icon-button:hover,.prepare-ask-icon-button[aria-expanded=true]{color:var(--ask-text);background:var(--ask-surface)}.prepare-ask-energy summary{display:flex;align-items:center;justify-content:center;gap:4px;min-width:48px;min-height:44px;border-radius:12px;padding:4px;color:var(--ask-accent);font-size:13px;font-variant-numeric:tabular-nums;cursor:pointer;list-style:none}.prepare-ask-energy summary::-webkit-details-marker{display:none}.prepare-ask-energy summary svg{width:15px;height:15px}.prepare-ask-energy-popover{position:absolute;inset-inline-end:12px;top:calc(100% - 3px);width:min(310px,calc(100% - 24px));padding:18px;border:1px solid var(--ask-line);border-radius:16px;background:var(--ask-surface);color:var(--ask-text);box-shadow:0 12px 35px #020c2140;font-size:13px}.prepare-ask-energy-popover dl{margin-block:12px 0}.prepare-ask-transcript{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:24px clamp(16px,4vw,36px) 12px;scroll-padding-block:20px;scrollbar-gutter:stable}.prepare-ask-transcript article{min-width:0;overflow-wrap:anywhere;margin-block-end:28px;color:var(--ask-text);font-size:15px;line-height:1.8}.prepare-ask-transcript article[data-role=student]{width:-moz-fit-content;width:fit-content;max-width:92%;margin-inline-start:auto;padding:12px 16px;border:1px solid var(--ask-line);border-radius:18px 18px 5px 18px;background:var(--ask-surface)}[dir=rtl] .prepare-ask-transcript article[data-role=student]{border-radius:18px 18px 18px 5px}.prepare-ask-speaker{margin-bottom:6px;color:var(--ask-muted);font-size:11px;font-weight:600;line-height:1.5}.prepare-ask-transcript article[data-role=tutor]>.prepare-ask-speaker{display:none}.prepare-ask-answer-author{display:flex;align-items:center;gap:5px;margin-inline-start:-6px;margin-bottom:10px}.prepare-ask-answer-author .prepare-ask-speaker{font-size:14px;color:var(--ask-text);margin:0}.prepare-ask-speaker span{display:block;font-size:11px;font-weight:400;color:var(--ask-muted)}.prepare-ask-transcript article[data-role=tutor]>div:not(.prepare-ask-answer-author):not(.prepare-ask-answer-actions){max-width:65ch}.prepare-ask-transcript article h3{color:var(--ask-text)}.prepare-ask-transcript :is(ol,ul){max-width:100%;padding-inline:1.5rem}.prepare-ask-answer-actions{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;padding-top:10px;margin-top:10px;border-top:1px solid var(--ask-line);color:var(--ask-muted)}.prepare-ask-answer-actions button{display:inline-flex;gap:7px;align-items:center;min-height:44px;font-size:12px;color:var(--ask-accent)}.prepare-ask-answer-actions svg{width:15px;height:15px}.prepare-ask-answer-actions .prepare-ask-draw-request{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:1px}.prepare-ask-draw-request small{font-size:10px;color:var(--ask-muted);font-weight:400}.prepare-ask-visual-note{border-inline-start:2px solid var(--ask-accent);padding-inline-start:12px;margin-block:12px;color:var(--ask-muted);font-size:13px;line-height:1.8}.prepare-ask-cost{font-size:10px;color:var(--ask-muted)}.prepare-ask-welcome{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:min(330px,50dvh);margin:auto;padding:16px 8px 36px;text-align:center}.prepare-ask-welcome h3{margin-block:12px 8px;font-size:21px;font-weight:600;text-wrap:balance}.prepare-ask-welcome p{max-width:32ch;color:var(--ask-muted);font-size:15px;line-height:1.8;text-wrap:pretty}.prepare-ask-status{flex-shrink:0;padding:0 20px;color:var(--ask-accent);font-size:12px;line-height:1.6}.prepare-ask-status[data-visible=true]{padding-block:7px;border-top:1px solid var(--ask-line)}.prepare-ask-composer{flex-shrink:0;padding:10px 18px 12px;background:var(--ask-bg)}.prepare-ask-input-shell{padding:5px;border:1px solid var(--ask-line);border-radius:18px;background:var(--ask-surface);box-shadow:0 2px 6px #020c2110}.prepare-ask-input-shell:focus-within{border-color:var(--ask-accent)}.prepare-ask-composer textarea{display:block;width:100%;resize:none;min-height:46px;max-height:120px;border:0;border-radius:12px;padding:10px 11px;font:inherit;font-size:16px;line-height:1.6;color:var(--ask-text);background:transparent;outline:none}.prepare-ask-composer textarea::-moz-placeholder{color:var(--ask-muted);opacity:.85}.prepare-ask-composer textarea::placeholder{color:var(--ask-muted);opacity:.85}.prepare-ask-tools{display:flex;gap:3px;align-items:center}.prepare-ask-tools>label{position:relative;display:grid;place-items:center;flex:none;width:44px;height:44px;border-radius:12px;color:var(--ask-muted);cursor:pointer}.prepare-ask-tools>label:hover{color:var(--ask-text);background:var(--ask-input)}.prepare-ask-tools>label:has(input:disabled){opacity:.45;cursor:default}.prepare-ask-tools input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:inherit}.prepare-ask-send{display:flex;align-items:center;justify-content:center;gap:8px;min-height:44px;max-width:calc(100% - 96px);margin-inline-start:auto;padding:8px 15px;border:1px solid #9bdbe83d;border-radius:13px;background:#a5dce6;color:#102438;font-size:13px;font-weight:650}.prepare-ask-send:disabled{opacity:.4;cursor:default}.prepare-ask-icon-button:active,.prepare-ask-send:active:not(:disabled){transform:translateY(1px)}[dir=rtl] .prepare-ask-send svg{transform:scaleX(-1)}.prepare-ask-shortcut{display:block;margin-top:6px;color:var(--ask-muted);font-size:10px;text-align:center}.prepare-ask-images{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:8px}.prepare-ask-images>div{position:relative}.prepare-ask-images img{width:72px;height:72px;-o-object-fit:cover;object-fit:cover;border:1px solid var(--ask-line);border-radius:12px}.prepare-ask-images button{position:absolute;inset-block-start:-4px;inset-inline-end:-4px;width:36px;height:36px;border:1px solid var(--ask-line);border-radius:50%;color:var(--ask-text);background:var(--ask-bg);font-size:23px}.prepare-ask-transcript .katex-display{max-width:100%;overflow-x:auto;overflow-y:hidden;direction:ltr;unicode-bidi:isolate}.prepare-ask-history{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px;margin-bottom:20px;padding-bottom:10px;border-bottom:1px solid var(--ask-line)}.prepare-ask-history h3{font-size:12px;color:var(--ask-muted)}.prepare-ask-history button{min-height:44px;font-size:12px;color:var(--ask-accent);text-decoration:underline;text-underline-offset:3px}.prepare-ask-conversation-divider,.prepare-ask-history-empty{margin-bottom:24px;color:var(--ask-muted);font-size:11px;text-align:center}.prepare-ask-conversation-divider{display:flex;align-items:center;gap:12px}.prepare-ask-conversation-divider:after,.prepare-ask-conversation-divider:before{content:"";flex:1;border-top:1px solid var(--ask-line)}.prepare-ask-panel :is(button,summary,label,textarea){transition:background-color .15s,border-color .15s,color .15s}.prepare-ask-panel :is(button,summary,textarea):focus-visible,.prepare-ask-tools label:focus-within{outline:2px solid var(--ask-accent);outline-offset:2px}.prepare-ask-exam-choices{display:grid;gap:16px;padding:28px;color:var(--ask-text,#e2e8f0);overflow-y:auto}.prepare-ask-exam-choices>button{min-height:60px;justify-content:flex-start}.prepare-ask-exam-choices small{color:var(--ask-muted,#94a3b8);line-height:1.7}.vw-ask-door{--exam-accent:var(--vw-cyan);position:relative;overflow:hidden;background:radial-gradient(ellipse at 85% 0,color-mix(in srgb,var(--vw-purple) 13%,transparent),transparent 70%),var(--vw-paper)}.vw-ask-symbol{position:relative;display:inline-flex;flex:none;margin-inline-end:10px}.vw-ask-symbol b{position:absolute;inset-inline-end:-8px;bottom:-4px;display:grid;place-items:center;width:26px;height:26px;border:1px solid var(--exam-accent);border-radius:50%;background:var(--vw-paper);color:var(--exam-accent);font-size:18px}:root[data-theme=light] .prepare-ask-overlay{--ask-bg:#f8fafc;--ask-surface:#edf2f8;--ask-input:#fff;--ask-text:#172b45;--ask-muted:#52647b;--ask-accent:#266374;--ask-line:#9daec34d}:root[data-theme=light] .prepare-ask-send{background:#17465c;color:#fff}@media(max-width:640px),(pointer:coarse) and (max-height:440px){.prepare-ask-backdrop{backdrop-filter:none}.prepare-ask-panel{inset:0;width:100%;border:0;border-radius:0;padding-top:var(--safe-top,env(safe-area-inset-top,0));padding-bottom:var(--safe-bottom,env(safe-area-inset-bottom,0))}.prepare-ask-overlay[data-keyboard=true] .prepare-ask-panel{padding-bottom:0}.prepare-ask-panel>header{padding:5px 8px;gap:2px}.prepare-ask-header-tools,.prepare-ask-identity{gap:2px}.prepare-ask-panel>header h2{font-size:15px}.prepare-ask-panel>header p{font-size:10px}.prepare-ask-transcript{padding:20px 16px 4px;scrollbar-gutter:auto}.prepare-ask-composer{padding:8px 10px 10px}.prepare-ask-shortcut{display:none}.prepare-ask-welcome{min-height:min(300px,45dvh)}}@media(max-height:480px){.prepare-ask-welcome{min-height:110px;padding:8px}.prepare-ask-welcome>div{display:none}.prepare-ask-panel>header{padding-block:3px}.prepare-ask-composer textarea{max-height:72px}.prepare-ask-composer .prepare-ask-images img{width:48px;height:48px}}@media(prefers-reduced-motion:reduce){.prepare-ask-panel *{scroll-behavior:auto!important;transition:none!important}}