/* A single, full-viewport learning stream for Cell Biology. */
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@media(max-width:600px){.cj-summary h1{font-size:32px}.cj-summary h1 br{display:block}.cj-stats>div{padding:15px 5px}.cj-stats strong{font-size:24px}}

.cj-explanation .note-l{padding-left:20px;margin:14px 0 0;font-size:16px;line-height:1.7;color:#575368}.cj-explanation .note-l li{padding-left:4px;margin:10px 0}.cj-explanation .note-l li::marker{color:#9c87c5}.cj-book-concept{padding:12px 0 18px;max-width:690px}.cj-book-concept h3{font-size:19px;margin:8px 0 12px}.cj-book-concept .note-l{line-height:1.8;padding-left:22px}.cj-book-concept li{margin:9px 0}.cj-book-detail{border:1px solid #e3deec;border-radius:12px;padding:16px;margin:20px 0}.cj-book-detail>summary{cursor:pointer;color:#75628e;font-weight:600}.cj-book-detail[open]>summary{margin-bottom:20px}

.cell-term{display:inline;background:none!important;color:inherit!important;border:0!important;border-bottom:1px dotted #796199!important;border-radius:0!important;padding:0!important;font:inherit!important;font-weight:600!important;line-height:inherit!important;cursor:help;box-shadow:none!important;text-align:inherit;vertical-align:baseline;min-height:0!important;letter-spacing:inherit;text-transform:none}@media(hover:hover) and (pointer:fine){.cell-term:hover,.cell-term:focus-visible{color:#62449b!important;background:#eee7fa!important;outline:2px solid #b8a0dd;outline-offset:2px}}.cell-definition{position:fixed;z-index:100000;box-sizing:border-box;padding:16px 18px;border:1px solid #d4c5e8;border-radius:12px;background:#fff;color:#3d344d;box-shadow:0 8px 36px #36214730;font:15px/1.6 'DM Sans',Arial,sans-serif;text-align:left;max-height:calc(100dvh - 24px);overflow:auto}.cell-definition strong{display:block;font-size:16px;margin-bottom:5px}.cell-definition p{margin:0}.cell-book-index{display:grid;gap:18px;margin:22px 0 34px}.cell-book-index>div{display:flex;flex-wrap:wrap;gap:8px}.cell-book-index strong{width:100%;font-size:16px}.cell-book-index button{border:1px solid #ddd4e9;background:#faf7ff;padding:9px 12px;border-radius:8px;font:inherit;font-size:13px;cursor:pointer;text-align:left;color:#665079}.cell-book-subsection{scroll-margin-top:20px;outline:none;margin:30px 0}.cell-book-subsection>h3{font-size:22px;line-height:1.4;border-bottom:1px solid #e8e1ef;padding-bottom:14px;color:#574468}.cell-book-illustrated{display:grid;grid-template-columns:minmax(150px,220px) minmax(0,1fr);gap:24px;align-items:center;max-width:none!important;border-bottom:1px solid #f0edf4;padding:22px 0!important}.cell-book-illustrated figure{margin:0;background:#f6f3fa;border-radius:14px;padding:10px}.cell-book-illustrated figure svg{display:block;width:100%;height:auto}.cell-book-illustrated figcaption{font-size:9px;text-align:center;color:#8b8297;line-height:1.5;padding:5px 0}.cj-book-concept h4{font-size:18px;margin:8px 0 12px;color:#4c415e}.cell-book-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.cell-textbook .cj-book-section{margin-top:20px}.cell-book-subsection:focus-visible{outline:2px solid #a88bc9;outline-offset:6px}.cell-book-native{max-width:none}.cell-textbook .note-l{font-size:16px}.cell-textbook .cj-book-section>h2{font-size:25px}
@media(max-width:600px){.cell-book-illustrated{grid-template-columns:1fr;gap:12px}.cell-book-illustrated figure{max-width:240px;width:100%;box-sizing:border-box;justify-self:center}.cell-book-subsection>h3{font-size:20px}.cell-book-actions .btn{white-space:normal}.cell-textbook .card{padding:20px}.cell-term{touch-action:manipulation}}

/* Keep all three learning modes reachable on narrow screens. */
.cj-top-title{min-width:0;max-width:260px}.cj-top-title strong{overflow:hidden;text-overflow:ellipsis}.cj-picture .note-svg{width:100%;margin:0}.cj-picture svg{max-width:100%;height:auto}.cj-native .cj-explanation{max-width:760px;margin:auto;width:100%;box-sizing:border-box}
@media(max-width:900px){.cj-topbar{height:auto;min-height:72px;flex-wrap:wrap}.cj-top-tools{flex-wrap:wrap}.cj-top-progress{min-width:30px}.cj-top-title{flex:1;max-width:none}.cj-top-tools{justify-content:flex-end}}
@media(max-width:600px){.cj-topbar{min-height:96px;padding-bottom:10px}.cj-top-tools{width:100%;justify-content:center;margin-left:0}.cj-top-title{max-width:calc(100% - 48px)}.cj-top-title strong{white-space:nowrap}.cj-top-tools .cj-notes-button{min-height:34px}.cj-picture{max-height:none}.cj-picture .note-svg svg{max-height:260px;width:100%}}

.cj-native{min-height:0}.cj-native .cj-explanation{min-height:160px}

/* Cell Biology textbook pages show their own labelled square diagram beside the text, so give it room to be read. */
.cell-book-illustrated{grid-template-columns:minmax(220px,320px) minmax(0,1fr)}
@media(max-width:600px){.cell-book-illustrated{grid-template-columns:1fr}.cell-book-illustrated figure{max-width:340px}}

/* No transition between a touch release and the next question. Keyboard focus stays visible. */
@media(hover:none), (pointer:coarse){.cj-shell button{transition:none}.cj-button:active{transform:none;border-bottom-width:3px}}
/* Motion, 5 October 2026 (owner's Seneca comparison). The script adds these classes once, to a card that has just
   arrived, a page that has just turned or feedback that has just appeared, so nothing replays when a card is redrawn.
   The touch rules above (no hover colour, no button transitions on touch screens) are unchanged. */
.cj-card.cj-arrive{animation:cj-arrive .42s cubic-bezier(.22,.61,.36,1) both}
@keyframes cj-arrive{from{opacity:0}to{opacity:1}}
.cj-teach.cj-page-next{animation:cj-page-next .26s cubic-bezier(.22,.61,.36,1) both}
.cj-teach.cj-page-back{animation:cj-page-back .26s cubic-bezier(.22,.61,.36,1) both}
@keyframes cj-page-next{from{opacity:.3;transform:translate3d(36px,0,0)}to{opacity:1;transform:none}}
@keyframes cj-page-back{from{opacity:.3;transform:translate3d(-36px,0,0)}to{opacity:1;transform:none}}
.cj-feedback.cj-reveal{animation:cj-reveal .22s ease-out both}
@keyframes cj-reveal{from{opacity:0}to{opacity:1}}
.cj-card.cj-held{box-shadow:none}
.cj-tile.cj-picked-right,.cj-tile.cj-picked-right:disabled{background:#edf6ed;border-color:#9fcaa9;border-bottom-color:#7fb68c;color:#456f52;opacity:1}
.cj-tile.cj-picked-wrong,.cj-tile.cj-picked-wrong:disabled{background:#fff4e3;border-color:#ebc994;border-bottom-color:#ddb06a;color:#8a6232;opacity:1}
.cj-tile.cj-picked-right .cj-choice-letter{border-color:#9fcaa9;color:#456f52}
.cj-tile.cj-picked-wrong .cj-choice-letter{border-color:#ebc994;color:#8a6232}
@media(prefers-reduced-motion:reduce){.cj-card.cj-arrive,.cj-teach.cj-page-next,.cj-teach.cj-page-back,.cj-feedback.cj-reveal{animation:none}}
/* ---------- one lesson per specification point (F20 and F21, 6 October 2026) ----------
   The top bar names the specification point, its title and the lesson number, and opens the specification. Wide
   landscape screens (desktop, iPad landscape) show the specification as a calm side panel that can be hidden; phones
   and iPad portrait open it as a drawer from the top bar. Nothing here moves the lesson feed. */
.cj-sr{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.cj-stage{flex:1;min-height:0;display:flex}
.cj-stage>.cj-feed{flex:1;min-width:0}
.cj-spec-toggle{border:0;background:transparent;color:inherit;text-align:left;padding:6px 10px;margin:-6px -10px;border-radius:12px;min-width:0;max-width:440px}
.cj-spec-toggle>strong{display:flex;align-items:center;gap:6px;min-width:0}
.cj-top-code{font-family:'Space Grotesk',sans-serif;font-variant-numeric:tabular-nums;color:var(--cj-purple);font-weight:700;letter-spacing:.2px;flex-shrink:0}
.cj-top-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
.cj-spec-toggle>strong>svg{width:16px;height:16px;color:#9a9bad;transition:transform .2s ease}
.cj-spec-toggle[aria-expanded="true"]>strong>svg{transform:rotate(180deg)}
@media(hover:hover) and (pointer:fine){.cj-spec-toggle:hover{background:#f5f1ff}}
.cj-intro-code{color:var(--cj-purple);font-variant-numeric:tabular-nums;letter-spacing:0}
.cj-waiting{text-align:center;color:var(--cj-muted);margin:80px 0}
.cj-specnav{display:none}
.cj-specnav[hidden]{display:none!important}
.cj-specnav-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;padding:20px 18px 14px 22px;border-bottom:1px solid #eeedf5;flex-shrink:0}
.cj-specnav-kicker{display:block;font-size:10px;letter-spacing:1.4px;color:#5f6178;font-weight:650}
.cj-specnav-head h2{font-family:'Space Grotesk',sans-serif;font-size:18px;line-height:1.25;margin:5px 0 4px;color:var(--cj-ink)}
.cj-specnav-head p{margin:0;font-size:12px;color:#5f6178}
.cj-specnav-scroll{position:relative;overflow-y:auto;overscroll-behavior:contain;padding:10px 10px 28px;flex:1;min-height:0}
.cj-nav-list{list-style:none;margin:0;padding:0;position:relative}
.cj-nav-list::before{content:'';position:absolute;left:24px;top:22px;bottom:22px;width:2px;border-radius:2px;background:#ecebf4}
.cj-nav-item{position:relative;margin:0}
.cj-nav-link{display:flex;align-items:flex-start;gap:12px;width:100%;border:0;background:transparent;color:var(--cj-ink);text-align:left;padding:10px 12px 10px 14px;border-radius:12px;position:relative}
.cj-shell .cj-nav-link:focus-visible{outline:3px solid #6356b7;outline-offset:-3px}
@media(hover:hover) and (pointer:fine){.cj-nav-link:hover{background:#f7f5fe}}
.cj-nav-mark{width:22px;height:22px;flex:0 0 22px;margin-top:6px;border-radius:50%;border:2px solid #cfd1e1;background:#fff;box-shadow:0 0 0 4px #fff;display:flex;align-items:center;justify-content:center;position:relative;z-index:1}
.cj-nav-started .cj-nav-mark{border-color:var(--cj-purple);background:linear-gradient(90deg,var(--cj-purple) 50%,#fff 50%)}
.cj-nav-done .cj-nav-mark{border-color:var(--cj-purple);background:var(--cj-purple);color:#fff}
.cj-nav-done .cj-nav-mark svg{width:13px;height:13px;stroke-width:3}
.cj-nav-text{display:flex;flex-direction:column;gap:2px;min-width:0}
.cj-nav-code{font-family:'Space Grotesk',sans-serif;font-variant-numeric:tabular-nums;font-size:12px;font-weight:700;color:#6152c2;letter-spacing:.2px}
.cj-nav-title{font-size:14px;line-height:1.35}
.cj-nav-also{font-size:11.5px;color:#5f6178;line-height:1.4}
.cj-nav-here .cj-nav-link{background:#f1eefc}
.cj-nav-here .cj-nav-link::before{content:'';position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:3px;background:var(--cj-purple)}
.cj-nav-here .cj-nav-title{font-weight:650}
.cj-nav-here .cj-nav-mark{box-shadow:0 0 0 4px #f1eefc}
@media (min-width:1000px) and (min-aspect-ratio:1/1){
.cj-specnav{display:flex;flex-direction:column;width:312px;flex:0 0 312px;min-height:0;background:#fff;border-right:1px solid #e6e8f0}
}
.cj-specnav-dialog{position:fixed;top:0;margin:0 auto;width:min(560px,100vw);max-width:none;max-height:min(86dvh,1120px);border:0;border-radius:0 0 22px 22px;padding:0;background:#fff;color:var(--cj-ink,#30304a);font-family:'DM Sans',Arial,sans-serif;box-shadow:0 24px 80px #2c214b40;overflow:hidden}
.cj-specnav-dialog[open]{display:flex;flex-direction:column;animation:cj-drawer .24s cubic-bezier(.22,.61,.36,1) both}
.cj-specnav-dialog::backdrop{background:#30284170;backdrop-filter:blur(4px)}
.cj-specnav-dialog button:focus-visible{outline:3px solid #6356b7;outline-offset:-3px}
@keyframes cj-drawer{from{opacity:0;transform:translate3d(0,-18px,0)}to{opacity:1;transform:none}}
.cj-lesson-notes-part{font-family:'Space Grotesk',sans-serif;font-size:13px;letter-spacing:.4px;text-transform:uppercase;color:#5f5880;margin:28px 0 6px}
.cj-lesson-notes:first-of-type .cj-lesson-notes-part{margin-top:8px}
.cj-notes-more{margin:30px 0 4px;display:flex}
@media(max-width:600px){
.cj-spec-toggle{max-width:none;padding:4px 8px;margin:-4px -8px}
.cj-specnav-dialog{width:100vw;border-radius:0 0 18px 18px;max-height:88dvh}
}
@media(prefers-reduced-motion:reduce){.cj-specnav-dialog[open]{animation:none}.cj-spec-toggle>strong>svg{transition:none}}

/* Keep reading history in place. Only the feed moves vertically between steps. */
.cj-feed{overflow-anchor:none}
.cj-card{margin-bottom:32px;scroll-margin-top:max(72px,12vh)}
.cj-card.cj-previous{opacity:.2;transition:opacity .32s ease}
.cj-card.cj-previous:focus-within,.cj-browsing .cj-card.cj-previous{opacity:1}
.cj-card-foot{min-height:76px}
.cj-card.cj-previous .cj-feedback-continue{visibility:hidden;pointer-events:none}
.cj-summary{animation:none;scroll-margin-top:max(72px,12vh)}
@media(max-width:600px){.cj-card{margin-bottom:32px;scroll-margin-top:24px}.cj-card-foot{min-height:72px}.cj-summary{scroll-margin-top:24px}}