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.18s var(--ease)}.hint--open .hint__chevron{transform:rotate(180deg)}.hint__panel{z-index:auto;border:1px solid var(--line);width:min(100%,32rem);max-width:100%;max-height:min(42vh,320px);color:var(--ink-soft);overflow-wrap:anywhere;background:#f8f8f6;border-radius:11px;grid-template-columns:22px minmax(0,1fr);gap:10px;padding:15px;display:grid;position:static;overflow-y:auto}.hint__panel[hidden]{display:none}.hint__panel p{font-size:var(--read-note,15px);margin:0;line-height:1.5}.explanation{color:var(--ink);transition:max-height .18s var(--ease), opacity .18s var(--ease), margin .18s var(--ease), padding .18s var(--ease), border-color .18s var(--ease)}.explanation--visible{max-height:420px}.explanation__label{color:var(--ink);font-size:var(--read-label,13px);font-style:normal;font-weight:700}.explanation p{color:var(--ink-soft);font-family:inherit;font-size:var(--read-body,17px);line-height:1.6}.recap-room{place-items:center;display:grid}.recap-card{width:100%;min-height:min(760px,100vh - 80px);padding:28px}.recap-heading{text-align:center;justify-items:center;margin:48px 0 24px;display:grid}.recap-mark{background:var(--ok);color:#fff;border-radius:50%;place-items:center;width:36px;height:36px;margin-bottom:14px;display:grid}.recap-heading .eyebrow{color:var(--ink);text-transform:none;margin:0 0 8px}.recap-heading h1{margin:0;font-family:ui-serif,Georgia,serif;font-size:26px}.recap-summary{color:var(--ink-soft);gap:3px;margin:18px 0 0;font-size:13px;display:grid}.recap-summary strong{color:var(--ink);font-size:19px}.recap-actions{gap:9px;margin:28px 0;display:grid}.recap-actions .pill{width:100%}.recap-misses{border-top:1px solid var(--line);padding-top:20px}.recap-misses h2{margin:0 0 12px;font-size:13px}.recap-list{gap:7px;margin:0}.recap-list li{background:var(--fill);color:var(--ink-soft);border:0;border-radius:9px;grid-template-columns:18px minmax(0,1fr);align-items:center;gap:9px;padding:12px 13px;font-size:14px;line-height:1.45;display:grid}.recap-list li>span:first-child{color:var(--no)}.recap-misses .orientation{margin:12px 0;font-family:inherit;font-size:14px}.editor-room{width:min(100% - 32px,1280px);padding-top:72px}.editor-header{align-items:center;gap:20px;min-height:44px;margin-bottom:14px;padding:0 4px;display:flex}.editor-header .home-link{margin-left:auto}.editor-mode{border:1px solid var(--line);border-radius:12px;gap:4px;padding:3px;display:flex}.editor-mode button{min-height:32px;color:var(--ink-soft);cursor:pointer;background:0 0;border:0;border-radius:9px;padding:0 12px}.editor-mode button[aria-pressed=true]{background:var(--fill,#ffffff14);color:var(--ink)}.editor-status{color:var(--ok);font-size:12px}.editor-status span{font-size:8px}.editor-top{border:1px solid var(--line);background:var(--stage);border-radius:12px;grid-template-columns:2fr 1fr 1fr;margin-bottom:12px;padding:14px}.field{color:var(--ink-soft);font-size:12px}.field input,.field textarea{border-color:var(--line);color:var(--ink);background:#fbfbfa;border-radius:9px;font-size:14px}.editor-grid{grid-template-columns:210px minmax(330px,1fr) minmax(380px,1.1fr);gap:12px}.editor-panel{border-color:var(--line);background:var(--stage);border-radius:12px;padding:16px}.question-list button{color:var(--ink-soft);border-color:#0000;border-radius:8px;font-size:13px}.question-list button[aria-current=true]{background:var(--cobalt-soft);color:var(--ink);border-color:#1769aa40}.editor-tools{flex-wrap:wrap;gap:8px;display:flex}.editor-tools .pill{width:auto}.choice-editor textarea{resize:vertical;min-height:58px;line-height:1.4}.icon-button{color:var(--ink-faint)}.editor-preview{background:#faf9f6}.editor-preview .stage-card{border-radius:10px;min-height:600px;padding:22px}.editor-preview .stage-page{--read-body:13px;--read-note:12px;--read-label:11px}.editor-preview .prompt{margin-top:42px;font-size:18px}.editor-preview .choice{min-height:44px;padding:9px}.editor-preview .choice__row{grid-template-columns:26px minmax(0,1fr) 22px}.editor-preview .choice__letter{width:22px;height:22px}.editor-preview .choice__feedback{padding:4px 22px 2px 34px}.editor-preview .stage-actions{margin-top:14px}.editor-preview .beats__game{display:none}.editor-footer{border:1px solid var(--line);background:var(--stage);border-radius:12px;justify-content:space-between;align-items:center;margin-top:12px;padding:12px 14px}.editor-footer>span{color:var(--ink-faint);font-size:12px}.editor-repair{padding:28px}.present-shell{--bg:#172028;--stage:transparent;--ink:#f5f3ee;--ink-soft:#aeb6bb;--ink-faint:#7d898f;--line:#ffffff1c;--ok:#5fce9b;background:var(--bg);min-height:100vh}.stage-page--present{--lecture-body:clamp(19px, min(1.9vw, 3vh), 28px);--lecture-note:clamp(16px, min(1.5vw, 2.4vh), 22px);--lecture-label:clamp(13px, min(1.2vw, 1.9vh), 17px);--lecture-prompt:clamp(30px, 3.4vw, 48px);--lecture-prompt-with-choices:clamp(26px, 3vw, 42px);background:var(--bg);padding:0}.stage-page--present .stage-card{background:0 0;border:0;border-radius:0;width:100%;min-height:100vh;padding:38px 46px}.stage-page--present .stage-head{top:34px;left:46px;right:46px}.stage-page--present .stage-body{align-content:safe center;justify-items:center;display:grid}.stage-page--present .prompt{text-align:center;max-width:min(100%,46rem);font-size:var(--lecture-prompt);overflow-wrap:anywhere;margin:0}.stage-page--present .stage-body:has(.choices--visible) .prompt{max-width:min(100%,52rem);font-size:var(--lecture-prompt-with-choices)}.stage-page--present .choices{width:min(100%,1040px);margin-top:clamp(28px,4vh,48px)}.stage-page--present .choice{border-color:var(--line);background:#ffffff06;min-height:0;padding:clamp(14px,1.6vh,22px) clamp(18px,1.8vw,28px)}.stage-page--present .choice--correct{background:#5fce9b1a;border-color:#5fce9bbf}.stage-page--present .choice__row{grid-template-columns:2.4rem minmax(0,1fr) 2rem;gap:14px}.stage-page--present .choice__letter{width:2.4rem;height:2.4rem;font-size:var(--lecture-note)}.stage-page--present .choice__text{font-size:var(--lecture-body);line-height:1.35}.stage-page--present .choice__mark{font-size:var(--lecture-body)}.stage-page--present .choice__feedback{padding:6px 2rem 2px calc(2.4rem + 14px)}.stage-page--present .choice__reaction{font-size:var(--lecture-note)}.stage-page--present .choice__rationale{color:var(--ink);font-size:var(--lecture-note);line-height:1.45}.stage-page--present .explanation{width:min(100%,1040px)}.stage-page--present .explanation--visible{max-height:min(46vh,420px);overflow-y:auto}.stage-page--present .explanation__label{font-size:var(--lecture-label)}.stage-page--present .explanation p{max-width:54ch;color:var(--ink);font-size:var(--lecture-note)}.stage-page--present .stage-actions{border:0}.stage-page--present .hint{width:min(100%,40rem);min-width:0}.stage-page--present .hint__button{min-height:44px;color:var(--ink);font-size:var(--lecture-label);background:#ffffff0d;padding:0 16px}.stage-page--present .hint__panel{width:min(74vw,40rem);color:var(--ink);background:#1f2b35;border-color:#fff3;grid-template-columns:1.6rem minmax(0,1fr)}.stage-page--present .hint__panel p{font-size:var(--lecture-note)}.present-overlay{border-color:var(--line);max-width:min(440px,100vw - 36px);color:var(--ink-soft);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#12191fd1;font-size:11px;line-height:1.55}.stage-page--present .pill--primary:focus-visible{outline-color:var(--ink)}@media (width<=900px){.editor-grid{grid-template-columns:180px minmax(0,1fr)}.editor-preview{grid-column:1/-1}}@media (width<=620px){.language-toggle{top:16px;right:16px}.room,.room--narrow{width:min(100% - 20px,560px);padding:10px 0}.home-card,.cover,.recap-card{min-height:calc(100vh - 20px);padding:20px}.cover{padding-top:52px}.home-card__intro{margin-top:90px}.home-card__footer{bottom:18px;left:20px;right:20px}.cover__identity{margin-top:42px}.stage-page{padding:8px}.stage-card{min-height:calc(100vh - 16px);padding:52px 16px 18px}.stage-head{grid-template-columns:minmax(0,1fr) auto;gap:8px}.stage-head__identity{gap:8px}.stage-title{max-width:none}.beats{justify-items:end}.beats__dots{justify-content:flex-end;max-width:105px}.prompt{margin-top:34px;font-size:clamp(21px,5.8vw,26px)}.choice{padding:11px}.stage-actions{grid-template-columns:minmax(0,1fr) auto;align-items:end;display:grid}.stage-actions__nav{min-width:0;margin-left:0}.stage-actions__nav .pill--primary{min-width:96px;padding-inline:14px}.hint{min-width:0}.hint__panel,.stage-page--present .hint__panel{width:100%;max-height:min(42vh,280px)}.present-shell:has(.hint--open) .present-overlay{visibility:hidden}.editor-room{width:min(100% - 20px,560px);padding-top:62px}.editor-header{flex-wrap:wrap;gap:10px}.editor-header .home-link{margin-left:0}.editor-mode{order:3;width:100%}.editor-mode button{flex:1}.editor-top,.editor-grid{grid-template-columns:1fr}.editor-preview{grid-column:auto}.editor-preview .stage-card{min-height:0;padding:16px}.choice-editor{grid-template-columns:24px minmax(0,1fr) 32px}.choice-editor textarea{min-height:72px}.editor-footer{z-index:5;gap:12px;position:sticky;bottom:8px}.cover h1{overflow-wrap:anywhere;font-size:clamp(24px,8vw,30px)}.cover__identity{grid-template-columns:40px minmax(0,1fr);gap:12px}.stage-page--present .stage-card{padding:64px 20px 24px}.stage-page--present .stage-head{top:22px;left:20px;right:20px}.stage-page--present{--lecture-body:clamp(18px, 5.2vw, 22px);--lecture-note:clamp(15px, 4.3vw, 18px);--lecture-prompt:clamp(28px, 8vw, 38px);--lecture-prompt-with-choices:clamp(24px, 6.8vw, 32px)}.stage-page--present .choices{margin-top:24px}}