/* Each subject owns this shell and its visual tokens. */
:root{--subject-ink:#203744;--subject-muted:#586a73;--subject-accent:#206b68;--subject-soft:#e8f3ee;--subject-line:#d8e3dc;--subject-paper:#fffefa;--subject-ground:#f3f5ed;font-family:var(--jke-font-ui),ui-rounded,"Avenir Next",system-ui,sans-serif;color-scheme:light}
*{box-sizing:border-box}body{margin:0;background:var(--subject-ground);color:var(--subject-ink);font-family:inherit;line-height:1.6}main{width:min(1200px,100%);margin:auto;padding:32px 28px 48px}h1,h2,h3{color:var(--subject-ink);line-height:1.2;letter-spacing:-.025em}h1{font-size:clamp(1.8rem,4vw,2.7rem);margin:0 0 10px}h2{font-size:clamp(1.35rem,2.4vw,1.9rem)}p{margin:0 0 16px}a{color:var(--subject-accent);text-underline-offset:3px}.masthead{position:relative;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;padding:18px max(24px,calc((100vw - 1144px)/2));background:var(--subject-paper);border-bottom:1px solid var(--subject-line)}.subject-brand{display:flex;align-items:center;gap:12px;color:var(--subject-ink);text-decoration:none;font-weight:700;font-size:1.15rem;line-height:1.2}.brand-glyph{display:grid;place-items:center;width:42px;height:42px;border-radius:14px;color:var(--subject-accent);background:var(--subject-soft);font-size:1.45rem}.subject-brand small{display:block;color:var(--subject-muted);font-size:.67rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;margin-top:5px}.masthead nav{display:flex;gap:6px;flex-wrap:wrap;margin:0}.masthead nav button{border:1px solid transparent;background:transparent;border-radius:12px;color:var(--subject-muted);padding:10px 16px;font-weight:700;min-height:44px}.masthead nav button[aria-current=page]{background:var(--subject-soft);color:var(--subject-accent);border-color:var(--subject-line)}.page-heading{margin-bottom:26px;max-width:72ch}.page-heading>.eyebrow{color:var(--subject-accent);letter-spacing:.15em;font-size:.72rem;font-weight:700;margin:0 0 9px}.page-intro{color:var(--subject-muted);font-size:1.02rem;max-width:60ch;margin:0}
button,.file-button{font:inherit;font-weight:700;min-height:44px;border:1px solid var(--subject-line);border-radius:10px;padding:10px 16px;background:var(--subject-paper);color:var(--subject-ink);cursor:pointer;transition:background .15s,border-color .15s}button:hover,.file-button:hover{background:var(--subject-soft);border-color:var(--subject-accent)}button:disabled{opacity:.5;cursor:default}.primary{background:var(--subject-accent);border-color:var(--subject-accent);color:white}.primary:hover{background:var(--subject-ink);color:white}.text-button{background:transparent;color:var(--subject-accent);border-color:transparent}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--subject-accent);outline-offset:4px}#notice{padding:14px 18px;border:1px solid #e8d393;background:#fff5d8;color:#654c1b;border-radius:12px;margin:0 0 22px}section[hidden]{display:none!important}input,select,textarea{font:inherit;color:var(--subject-ink);border:1px solid var(--subject-line);border-radius:9px;background:white;padding:10px 12px;max-width:100%;min-height:44px}textarea{line-height:1.6}input[type=checkbox]{min-height:0;accent-color:var(--subject-accent)}canvas{max-width:100%}.paper{padding:24px;margin:0;background:var(--subject-paper);border:1px solid var(--subject-line);border-radius:18px;box-shadow:0 4px 0 #20374405}
.settings-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr));gap:24px;align-items:start}.settings-grid h2{margin:0 0 14px}.settings-grid label{display:block;margin:18px 0;font-weight:700}.settings-grid select{display:block;width:100%;margin-top:7px}.settings-grid button{margin:6px 8px 6px 0}.settings-grid p{color:var(--subject-muted)}.settings-grid input[type=checkbox]{margin-right:8px}.file-button{display:inline-block;margin:6px 8px 6px 0!important}.file-button input{display:block;width:100%;padding:8px 0 0;border:0;background:transparent}.danger{color:#9b3831;border-color:#dfbcb6;background:#fff8f5}.settings-divider{border:0;border-top:1px solid var(--subject-line);margin:24px 0}#offlineStatus,#syncStatus{font-size:.87rem;color:var(--subject-muted)}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,250px),1fr));gap:18px;margin:24px 0}.cards article{display:flex;flex-direction:column;align-items:start;padding:24px;background:var(--subject-paper);border:1px solid var(--subject-line);border-radius:18px}.cards h3{margin:14px 0 10px}.cards p{color:var(--subject-muted)}.cards button{margin-top:auto}.investigation-symbol{font-size:1.8rem;width:56px;height:56px;display:grid;place-items:center;border-radius:16px;background:var(--subject-soft);color:var(--subject-accent)}.saved-badge{display:inline-block;border:1px solid var(--subject-line);background:var(--subject-soft);color:var(--subject-accent);border-radius:100px;padding:4px 10px;font-size:.78rem;font-weight:700;margin:0 0 16px}.notebook-empty{max-width:640px;padding:32px;background:var(--subject-paper);border:1px dashed var(--subject-line);border-radius:20px;margin:24px 0}.notebook-empty h2{margin:0 0 12px}.notebook-empty p{color:var(--subject-muted)}.notebook-empty button{margin-top:8px}.notebook-actions{display:flex;gap:10px;flex-wrap:wrap;margin:24px 0}#notebookView>.history-notebook-card{margin:20px 0;max-width:800px}
dialog{width:min(560px,calc(100vw - 32px));max-height:calc(100dvh - 48px);overflow:auto;border:1px solid var(--subject-line);border-radius:20px;background:var(--subject-paper);color:var(--subject-ink);padding:28px;box-shadow:0 24px 100px #12253940}dialog::backdrop{background:#12253980;backdrop-filter:blur(3px)}dialog h2{margin-top:0}dialog button{margin:8px 8px 0 0}.reduce-motion *{scroll-behavior:auto!important;animation:none!important;transition:none!important}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media(max-width:720px){main{padding:24px 16px 36px}.masthead{padding:16px;gap:14px}.subject-brand{font-size:1.05rem}.masthead nav{width:100%;display:grid;grid-auto-flow:column;grid-auto-columns:minmax(0,1fr);gap:4px}.masthead nav button{padding:10px 5px;font-size:.8rem;overflow-wrap:anywhere}.page-heading{margin-bottom:22px}.paper{padding:20px}.settings-grid{gap:18px}.notebook-empty{padding:24px}.cards{gap:14px}.cards article{padding:22px}dialog{padding:22px}}

:root{--subject-ink:#24304d;--subject-muted:#5a6480;--subject-accent:#4e52a0;--subject-soft:#eeedfa;--subject-line:#dcdff0;--subject-paper:#fffffc;--subject-ground:#f4f5fb}body{background:radial-gradient(ellipse at 85% 0,#e8eafb,transparent 48%),#f4f5fb}.brand-glyph{background:#242d50;color:#f8dc8b}.orr-heading{padding:18px 22px;background:#242d50;color:#fff;border-radius:18px;gap:12px}.orr-heading h2{color:#fff;font-size:1.35rem}.orr-heading .eyebrow{color:#edda9c}.orr-heading p{margin:0}.orr-heading>div>p:last-child{color:#d9deef;font-size:.9rem;margin-top:6px}#orrEarned{color:#f8df9e;font-size:.85rem;font-weight:700}.orr-lenses button{border-radius:12px}.orr-lenses [aria-pressed=true]{background:var(--subject-accent);border-color:var(--subject-accent)}.orr-stage-card,.orr-control-panel{border:1px solid var(--subject-line);box-shadow:0 4px 0 #24304d05}.orr-stage-card{background:#101f30}.orr-viewport{border-radius:16px 16px 0 0}.orr-stage-card .orr-camera,.orr-stage-card>p,.orr-map-key{padding-left:18px;padding-right:18px}.orr-stage-card .orr-camera button{background:#253b4e;border-color:#405569;color:#eef4fa}.orr-stage-card>p,.orr-map-key{color:#cad7e4}.orr-map-key{padding-bottom:12px}.orr-control-panel,.orr-comparison,.orr-learning{background:var(--subject-paper);border-radius:18px}.orr-control-panel{padding:22px}.orr-control-panel h3,.orr-comparison h3{margin-top:0}.orr-comparison{border:1px solid var(--subject-line);padding:24px;margin:24px 0}.orr-place-cards .paper{border-left:4px solid #d1aa4d}.orr-place-cards .paper:last-child{border-left-color:#7c83bf}.orr-learning{padding:24px;margin-top:24px}.orr-learning h3{margin-top:0}.orr-clock label{display:block;margin-top:16px}.orr-clock input,.orr-clock select{width:100%;margin-top:6px}.orr-wrap button{margin-bottom:3px}#orrChallenge{background:var(--subject-accent);color:white;border-color:var(--subject-accent)}#orrFeedback:empty,#orrQuestion:empty{display:none}#orrFeedback:not(:empty){margin:16px 0 0;padding:14px;border-radius:12px;background:var(--subject-soft)}@media(max-width:720px){.orr-heading{padding:18px}.orr-comparison,.orr-control-panel,.orr-learning{padding:18px}.orr-lenses{gap:6px}.orr-lenses button{flex-basis:29%;padding:10px 8px;font-size:.85rem}.orr-place-controls{gap:14px}.orr-place-cards .paper{padding:18px}.orr-viewport{height:300px!important}.orr-clock-buttons button{flex:1}}

body[data-jke-game-id="astronomy"] main .primary{background:var(--subject-accent);border-color:var(--subject-accent);color:white}body[data-jke-game-id="astronomy"] main .text-button{color:var(--subject-accent)}#notice[data-kind=success]{background:var(--subject-soft);border-color:var(--subject-line);color:var(--subject-accent)}.masthead nav button{overflow-wrap:normal;white-space:nowrap}

h1,h2,h3{font-family:inherit}.orr-clock-buttons #orrRotate{flex-basis:100%;width:100%}.orr-clock-buttons button{min-width:44px;padding-inline:10px}.orr-control-panel{min-width:0}

.orr-heading .eyebrow{display:none}.orr-heading{padding-block:16px}

/* Assimilation: suite-owned UI tokens; scientific maps keep their data colors. */
:root{--subject-ink:var(--jke-suite-ink,#31264e);--subject-muted:var(--jke-suite-muted,#6d627d);--subject-accent:#7046ae;--subject-soft:#eee7f8;--subject-line:var(--jke-suite-line);--subject-paper:var(--jke-suite-paper,#fffaf2);--subject-ground:#f5f0f8;--atlas-ink:var(--jke-suite-ink,#31264e);--atlas-muted:var(--jke-suite-muted,#6d627d);--atlas-green:#7046ae;--atlas-accent:var(--jke-suite-focus,#7b4ed8);--atlas-line:var(--jke-suite-line);--atlas-paper:var(--jke-suite-paper,#fffaf2)}
body{background:linear-gradient(145deg,var(--jke-suite-paper,#fffaf2),#f1edf8 75%);color:var(--jke-suite-ink)}.masthead{background:var(--jke-suite-paper);border-color:var(--jke-suite-line)}.subject-brand{color:var(--jke-suite-ink)}.brand-glyph{background:#eee7f8;color:#7046ae}.paper,.history-card,.history-reader,.cards article,.atlas-starts,.place-browser{border-radius:var(--jke-suite-radius,18px);box-shadow:var(--jke-suite-shadow-sm)}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline-color:var(--jke-suite-focus)}#syncStatus{font-size:.85rem}

.course-unit{margin:24px 0;padding:20px;background:var(--subject-paper);border:1px solid var(--subject-line);border-radius:18px}.course-unit>summary{font-size:1.25rem;font-weight:700;cursor:pointer}.course-unit>p{margin-top:12px;color:var(--subject-muted)}.course-sources{margin-top:12px;padding-top:12px;border-top:1px solid var(--subject-line)}.course-sources summary{cursor:pointer;font-weight:700}.course-cards article{min-height:190px}.course-cards h3{margin:4px 0 10px}.course-cards .small{margin-bottom:5px;color:var(--subject-muted)}.course-tools{display:flex;gap:10px;flex-wrap:wrap;margin:12px 0}.lesson-detail,.lesson-model{padding:24px;background:var(--subject-paper);border:1px solid var(--subject-line);border-radius:18px;margin:16px 0}.lesson-detail>label{display:grid;gap:8px;margin:20px 0;font-weight:700}.lesson-detail textarea{min-height:90px}.lesson-question{font-size:1.3rem;font-weight:700}.lesson-model svg{width:100%;height:auto;max-height:250px;background:#071522;border-radius:14px}.lesson-model input[type=range]{width:100%}.lesson-choices{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,210px),1fr));gap:12px;margin:16px 0}.lesson-choices button{min-height:56px;text-align:left}.correct-choice,.lesson-evidence{background:var(--subject-soft);border-color:var(--subject-accent)}.lesson-evidence{padding:16px;border-radius:12px}.sky-chart-controls{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;padding:16px;background:var(--subject-paper);border:1px solid var(--subject-line);border-radius:14px}.sky-chart-controls label{display:grid;gap:6px;font-weight:700}.sky-chart canvas{display:block;width:min(100%,680px);height:auto;aspect-ratio:1;margin:20px auto;border-radius:50%;touch-action:pan-y}.sky-object-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));gap:10px}.sky-object{display:flex;gap:10px;align-items:center;justify-content:space-between;padding:12px;background:var(--subject-paper);border:1px solid var(--subject-line);border-radius:10px}.sky-object button{flex:0 0 auto}.observation-form{display:grid;gap:12px;max-width:720px;padding:20px;background:var(--subject-paper);border:1px solid var(--subject-line);border-radius:14px}.observation-form label{display:grid;gap:6px}.observation-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:12px;margin:18px 0}.observation-list article{padding:16px;background:var(--subject-paper);border:1px solid var(--subject-line);border-radius:12px}.observation-list h3{margin-bottom:4px}@media(max-width:720px){.course-unit{padding:14px}.lesson-detail,.lesson-model{padding:16px}.sky-object{align-items:flex-start;flex-direction:column}.sky-object button{width:100%}}
:root{--art-wash:#eee7f9}
.page-heading.illustrated-heading{position:relative;isolation:isolate;max-width:none;min-height:184px;padding:20px 260px 16px 22px;border-radius:22px;background:linear-gradient(110deg,#f0eaf9 0%,#faf6ef 68%,#ece9fa 100%);border:1px solid var(--subject-line);overflow:hidden;margin-bottom:6px}
.illustrated-heading .page-intro{max-width:54ch}
.heading-art{position:absolute;right:10px;bottom:0;width:246px;height:184px;pointer-events:none;z-index:-1}
.heading-graphic{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;opacity:.45}
.heading-kid{position:absolute;right:16px;bottom:0;width:200px;height:176px;object-fit:contain;object-position:center bottom;filter:drop-shadow(0 4px 4px #382c4920)}
.art-caption{font-size:.78rem;color:var(--subject-muted);margin:0 0 22px 10px;letter-spacing:.015em}
.moon-art-crew{display:flex;align-items:center;gap:24px;margin-top:26px;padding:16px 24px 0;border:1px solid var(--subject-line);border-radius:22px;background:linear-gradient(120deg,#f2eafb,#fffaf0);overflow:hidden}
.moon-art-crew h3{margin:0 0 8px}.moon-art-crew p{margin-bottom:14px;max-width:32ch}.crew-figures{display:flex;align-items:end;justify-content:center;gap:2px;margin-left:auto;flex:0 1 480px;min-width:0}.crew-kid{object-fit:contain;object-position:bottom;width:32%;height:190px;min-width:0}.crew-kid:nth-child(2){height:160px}.crew-kid:nth-child(3){height:125px}
@media(max-width:600px){.page-heading.illustrated-heading{min-height:154px;padding:16px 112px 16px 16px;border-radius:18px}.illustrated-heading h1{font-size:1.55rem}.illustrated-heading .page-intro{font-size:.88rem}.heading-art{right:0;width:110px;height:140px}.heading-kid{right:0;width:110px;height:132px}.art-caption{font-size:.72rem;margin-left:5px}.moon-art-crew{display:block;padding:16px 16px 0}.crew-figures{max-width:360px;margin:auto}.crew-kid{height:158px}.crew-kid:nth-child(2){height:140px}.crew-kid:nth-child(3){height:108px}}