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#ffffff80}.school-realm-badge-art picture,.school-realm-badge-art img{width:100%;height:100%;display:block}.school-realm-badge-art img{object-fit:cover;object-position:center 42%}.school-realm-badge.is-current .school-realm-badge-art{border-color:#8b1a1a99;box-shadow:0 0 0 2px #8b1a1a40}.school-realm-badge-fallback{color:#5a4628;pointer-events:none;background:#efe6d8;place-items:center;font-size:.95rem;display:grid;position:absolute;inset:0}.school-realm-badge-art:has(img:not([style*="display: none"])) .school-realm-badge-fallback{opacity:0}.school-realm-badge-name{letter-spacing:.06em;color:var(--text);text-align:center;font-size:.72rem;line-height:1.2}.school-stage-section{margin:0 0 1.75rem}.school-stage-banner{border:1px solid color-mix(in srgb, var(--room-line) 85%, #5a4628);background:#f2ebe2;border-radius:8px;height:140px;margin-bottom:.9rem;position:relative;overflow:hidden}.school-stage-banner-picture,.school-stage-banner-img{width:100%;height:100%;display:block;position:absolute;inset:0}.school-stage-banner-img{object-fit:cover;object-position:center right}.school-stage-banner-shade{display:none}.school-stage-banner-title{z-index:2;letter-spacing:.18em;color:#241c14;text-shadow:0 0 12px #f7f1e8f2,0 0 22px #f7f1e8bf,0 1px #ffffffa6;max-width:min(42%,15rem);margin:0;padding:1.6rem 1.5rem;font-size:clamp(2rem,3.6vw,2.85rem);font-weight:700;line-height:1.15;position:relative}.school-stage-banner-title:after{content:"";background:linear-gradient(90deg,#8b1a1a,#8b1a1a66 70%,#0000);border-radius:2px;width:3.4rem;height:3px;margin-top:.55rem;display:block}.school-stage-banner-advanced .school-stage-banner-title,.school-stage-banner-master .school-stage-banner-title{color:#241c14}.school-chapter-grid{--school-card-gap:.85rem;--school-cols:4;justify-content:center;align-items:flex-start;gap:var(--school-card-gap);flex-wrap:wrap;display:flex}.school-map-v2 .school-chapter-card{box-sizing:border-box;width:calc((100% - (var(--school-cols) - 1) * var(--school-card-gap)) / var(--school-cols));border:1px solid var(--room-line);background:var(--card-bg,#fffdfa);border-radius:8px;flex-direction:column;flex:none;min-height:0;padding:0;display:flex;position:relative;overflow:hidden}.school-map-v2 .school-chapter-card:before{content:none;display:none}.school-chapter-card.is-open{border-color:#8b1a1a66;box-shadow:0 0 0 1px #8b1a1a22}.school-chapter-card.is-done .school-chapter-card-kicker{color:#f0c4b8}.school-chapter-card.is-locked{opacity:1;filter:none}.school-chapter-card.is-locked .school-chapter-card-media>picture,.school-chapter-card.is-locked .school-chapter-card-media 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.school-chapter-card-fallback{opacity:0}.school-chapter-card-shade{z-index:2;pointer-events:none;background:linear-gradient(#0c0a0833 0%,#0c0a088c 58%,#0c0a08eb 100%)}.school-chapter-card-overlay{z-index:3;color:#f3ecdf;flex-direction:column;gap:4px;padding:18px 16px 16px;display:flex;position:relative}.school-chapter-card-kicker{letter-spacing:.16em;color:#f0c4b8;font-size:.72rem;line-height:1.3}.school-map-v2 .school-chapter-card-title.entry-title{z-index:3;font-family:var(--font-title);letter-spacing:.18em;color:#f3ecdf;text-shadow:0 1px 2px #00000059;font-size:22px;font-weight:600;line-height:1.25;position:relative}.school-map-v2 .school-chapter-card-blurb.entry-blurb{z-index:3;color:#cfc2ad;-webkit-line-clamp:2;-webkit-box-orient:vertical;height:3em;font-size:13px;line-height:1.5;display:-webkit-box;position:relative;overflow:hidden}.school-chapter-card-prog{z-index:3;color:#d4c6ae;margin-top:2px;padding-bottom:2px;font-size:12px;position:relative}.school-chapter-card-prog .school-tile-bar{background:#e0bc78}@media (width<=900px){.school-chapter-grid{--school-cols:2}}@media (width<=520px){.school-chapter-grid{--school-cols:1}}.school-chapter-lessons{border-top:1px dashed var(--room-line);margin:0;padding:.35rem .75rem .75rem;list-style:none}.school-chapter-lessons li+li{margin-top:2px}.school-chapter-lessons a{color:inherit;align-items:center;gap:8px;padding:6px 4px;font-size:.9rem;text-decoration:none;display:flex}.school-chapter-lessons a:hover{color:#8b1a1a}@media (width<=520px){.school-stage-banner{height:112px}.school-stage-banner-title{letter-spacing:.14em;color:#241c14;max-width:55%;padding:1.2rem 1rem;font-size:clamp(1.65rem,8vw,2.1rem)}.school-map-v2 .school-chapter-card-title.entry-title{font-size:20px}}@media (prefers-reduced-motion:reduce){.school-chapter-card,.school-realm-badge,.school-stage-banner{transition:none!important}}[data-theme=night] .school-map-v2 .school-progress-head,[data-theme=night] .school-map-v2 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.board-widget{width:100%;max-width:min(100%,560px);margin-inline:auto}.school-demo.is-fullboard .teach-board.teach-size-19,.school-demo.is-fullboard .teach-board.teach-size-13{max-width:min(100%,560px)}.school-demo.is-compact .solve-board,.school-demo.is-compact .board-wrap{width:100%;max-width:100%}.school-demo .board-svg{aspect-ratio:auto;vertical-align:top}.school-demo .school-actions:empty{margin:0;display:none}.back-link-slot{align-items:center;min-height:44px;margin:0 0 10px;display:flex}.back-link{border:1px solid var(--room-line);background:var(--card-bg,var(--panel-bg,#f7f1e4));min-height:44px;color:var(--text);letter-spacing:.04em;box-shadow:0 1px 0 color-mix(in srgb, var(--lamp,#8b1a1a) 18%, transparent);border-radius:6px;align-items:center;gap:8px;padding:0 16px;font-size:15px;font-weight:600;text-decoration:none;display:inline-flex}.back-link:hover{border-color:var(--lamp,#8b1a1a);color:var(--lamp,#8b1a1a)}.back-link:focus-visible{outline:2px solid var(--lamp,#8b1a1a);outline-offset:2px}.back-link-arrow{font-size:1.1em;line-height:1}@media (prefers-reduced-motion:reduce){.back-link.ink-btn:after{transition:none!important;animation:none!important}}.back-link-slot.is-sticky{top:calc(var(--topbar-h) + var(--crumb-h));z-index:25;background:linear-gradient(to bottom, color-mix(in srgb, var(--page-bg,#efe6d4) 92%, transparent) 60%, transparent);margin-bottom:4px;padding:6px 0;position:sticky}html.night .back-link,[data-theme=night] .back-link{background:color-mix(in srgb, var(--card-bg,#2a2a2a) 90%, #000);border-color:color-mix(in srgb, var(--room-line) 80%, #666)}.school-bottom-nav{z-index:40;border-top:1px solid var(--room-line);background:color-mix(in srgb, var(--card-bg,#f7f1e4) 92%, transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);padding-bottom:env(safe-area-inset-bottom,0);position:fixed;bottom:0;left:0;right:0}.school-bottom-nav-inner{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;gap:6px 10px;max-width:920px;margin:0 auto;padding:8px 12px;display:grid}.school-bottom-nav .school-fixed-link{color:inherit;text-overflow:ellipsis;white-space:nowrap;border:1px solid #0000;border-radius:6px;align-items:center;max-width:100%;min-height:40px;padding:0 10px;font-size:13px;text-decoration:none;display:inline-flex;overflow:hidden}.school-bottom-nav .school-fixed-prev{justify-self:start}.school-bottom-nav .school-fixed-next{justify-self:end}.school-bottom-nav .school-fixed-link.is-empty{visibility:hidden;pointer-events:none}.school-bottom-mid{flex-direction:column;align-items:center;gap:2px;min-width:0;display:flex}.school-bottom-nav .school-fixed-map{border:1px solid var(--room-line);letter-spacing:.06em;min-height:40px;color:var(--lamp,#8b1a1a);background:var(--card-bg,#f7f1e4);white-space:nowrap;border-radius:6px;justify-content:center;align-items:center;padding:0 14px;font-size:14px;font-weight:600;text-decoration:none;display:inline-flex}.school-bottom-nav .school-fixed-map:hover{border-color:var(--lamp,#8b1a1a)}.school-bottom-nav .school-fixed-prog{color:var(--text-dim);text-align:center;text-overflow:ellipsis;white-space:nowrap;max-width:42vw;font-size:11px;overflow:hidden}.school-page-with-bottom-nav{padding-bottom:calc(72px + env(safe-area-inset-bottom,0px))}@media (width<=640px){.school-bottom-nav-inner{gap:4px;padding:8px}.school-bottom-nav .school-fixed-link{padding:0 6px;font-size:12px}.school-bottom-nav .school-fixed-map{padding:0 10px;font-size:13px}}@media (prefers-reduced-motion:reduce){.school-bottom-nav{-webkit-backdrop-filter:none;backdrop-filter:none}}