.gt-app{background:var(--classroom-paper);min-height:100dvh;color:var(--classroom-ink);flex-direction:column;display:flex;overflow-x:clip}.gt-header{z-index:2;align-items:center;gap:var(--classroom-space-2);padding-block:var(--classroom-space-1);background:var(--classroom-surface);border-bottom:1px solid var(--classroom-line);padding-inline:clamp(1rem,3vw,2rem);display:flex;position:sticky;top:0}.gt-brand img{width:clamp(7rem,12vw,9rem);height:auto;display:block}.gt-state{margin:0;border-radius:var(--classroom-radius-pill);background:var(--classroom-wash);color:var(--classroom-muted);white-space:nowrap;margin-inline-start:auto;padding-block:.25rem;padding-inline:.75rem;font-size:.875rem}.gt-header-actions{align-items:center;gap:var(--classroom-space-1);min-width:0;display:flex}.gt-main{grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);align-items:start;gap:clamp(1rem,2vw,2rem);width:100%;max-width:96rem;margin-inline:auto;padding:clamp(1rem,2vw,2rem);display:grid}.gt-main--single{grid-template-columns:minmax(0,1fr);max-width:48rem}.gt-left,.gt-right{min-width:0}@media (width<=60rem){.gt-main{grid-template-columns:minmax(0,1fr)}}.gt-panel{border:1px solid var(--classroom-line);border-radius:var(--classroom-radius);background:var(--classroom-surface);overflow-wrap:anywhere;min-width:0;padding:clamp(1rem,2vw,1.5rem)}.gt-panel>*+*{margin-block-start:var(--classroom-space-2)}.gt-eyebrow{color:var(--classroom-muted);letter-spacing:.04em;margin:0;font-size:.875rem}.gt-problem-title{text-wrap:balance;margin:0;font-size:clamp(1.25rem,1.8vw,1.6rem);font-weight:700;line-height:1.45}.gt-meta{color:var(--classroom-muted);flex-wrap:wrap;gap:.25rem .75rem;margin:0;padding:0;font-size:.875rem;list-style:none;display:flex}.gt-meta-id{letter-spacing:.03em}.gt-statement{white-space:pre-wrap;margin:0;font-size:1.0625rem;line-height:1.9}.gt-formula{white-space:normal}.gt-formula-fallback{border-radius:var(--zz-radius-card);background:var(--classroom-wash);padding-block:0;padding-inline:.25rem;font-size:.95em}.gt-figure{padding:var(--classroom-space-1) var(--classroom-space-2);border:1px dashed var(--classroom-line);border-radius:var(--classroom-radius-control);background:var(--classroom-paper)}.gt-figure-label{margin:0;font-weight:700}.gt-figure[data-figure-status=pending] .gt-figure-label{color:var(--classroom-muted)}.gt-source{padding-block:var(--classroom-space-1);border-top:1px solid var(--classroom-line);color:var(--classroom-muted);margin:0;font-size:.8125rem}.gt-ready{color:var(--classroom-math-b);margin:0;font-weight:700}.gt-review{color:var(--classroom-error);margin:0;font-weight:700}.gt-reasons{gap:.25rem;margin:0;padding-inline-start:1.1rem;font-size:.9375rem;display:grid}.gt-code{color:var(--classroom-muted);font-family:var(--zz-font-mono,monospace);margin-inline-start:.5rem;font-size:.75rem}.gt-muted{color:var(--classroom-muted);font-size:.875rem}.gt-error{padding:var(--classroom-space-1) var(--classroom-space-2);border-radius:var(--classroom-radius-control);background:var(--classroom-error-wash);color:var(--classroom-error);margin:0}.gt-link{color:var(--classroom-focus)}.gt-chat{gap:var(--classroom-space-2);flex-direction:column;display:flex}.gt-chat-head{justify-content:space-between;align-items:baseline;gap:var(--classroom-space-1);display:flex}.gt-chat-title{margin:0;font-size:1.125rem;font-weight:700}.gt-stage{color:var(--classroom-muted);margin:0;font-size:.8125rem}.gt-ai-notice{padding:var(--classroom-space-1) var(--classroom-space-2);border-inline-start:.25rem solid var(--classroom-primary);border-radius:var(--zz-radius-card);background:var(--classroom-paper);margin:0;font-size:.875rem}.gt-messages{flex-direction:column;gap:.75rem;max-height:52vh;margin:0;padding:0;list-style:none;display:flex;overflow-y:auto}.gt-message-pair{flex-direction:column;gap:.5rem;display:flex}.gt-message{flex-direction:column;align-items:flex-start;gap:.25rem;max-width:100%;display:flex}.gt-message--learner{align-items:flex-end}.gt-bubble{border-radius:var(--classroom-radius-control);background:var(--classroom-paper);white-space:pre-wrap;overflow-wrap:anywhere;margin:0;padding:.625rem .875rem}.gt-message--learner .gt-bubble{background:var(--classroom-wash)}.gt-feedback{align-self:flex-start;margin:0}.gt-progress{color:var(--classroom-focus);margin:0;font-weight:700}.gt-paused,.gt-ended{color:var(--classroom-muted);margin:0;font-weight:700}.gt-feedback-note{color:var(--classroom-muted);margin:0;font-size:.75rem}.gt-composer{flex-direction:column;gap:.5rem;display:flex}.gt-composer-label{font-size:.9375rem;font-weight:700}.gt-input{width:100%;min-height:6rem;padding:var(--classroom-space-1) var(--zz-space-16);border:1px solid var(--classroom-input-border);border-radius:var(--classroom-radius-control);background:var(--zz-ivory);color:var(--zz-text-on-cream);resize:vertical;font-family:inherit;font-size:1rem;line-height:1.6}.gt-input:disabled{background:var(--classroom-wash);color:var(--classroom-muted)}.gt-input::placeholder{color:var(--classroom-muted);opacity:1}.gt-composer-help{color:var(--classroom-muted);margin:0;font-size:.75rem}.gt-composer-actions{align-items:center;gap:var(--classroom-space-1);flex-wrap:wrap;display:flex}.gt-chat--waiting{color:var(--classroom-muted)}