/* Shared by the atlas entrance and published concept entries, never by columns. */
body.concept-world{color-scheme:dark;--concept-bg:#0b1730;--concept-text:#e5edf9;--concept-muted:#b0c4df;--concept-blue:#9fcaff;--concept-line:#7895bd45;--ink:var(--concept-text);--paper:var(--concept-bg);--heading:#f2f4f6;--muted:var(--concept-muted);--line:var(--concept-line);--accent:var(--concept-blue);--surface:#102341;color:var(--concept-text);background:radial-gradient(ellipse at 8% 18%,#16377888 0,transparent 44%),radial-gradient(ellipse at 93% 38%,#302a7655 0,transparent 42%),linear-gradient(145deg,#050d26 0%,#101e40 46%,#081426 78%,#050d26 100%);background-attachment:fixed;-webkit-font-smoothing:antialiased}
body.concept-world>.header{background:#07132bf5;color:var(--concept-text);border-color:var(--concept-line)}
.concept-world .header a,.concept-world .header button,.concept-world .brand-name{color:var(--concept-text)}
.concept-world .brand-name small{color:var(--concept-muted)}.concept-world .mobile-nav{background:#0d1c38;color:var(--concept-text)}
.concept-world .brand-mark{color:#e5edf9}.concept-world .brand-mark span{color:#9fcaff}.concept-world .search-link{color:#b0c4df}
.concept-world .site-footer{background:#07132b;color:var(--concept-muted);border-color:var(--concept-line)}.concept-world .site-footer a{color:#d0e0f6}.concept-world .site-footer h2{color:var(--concept-muted)}
.concept-world #image-dialog{background:#09162b;color:#e5edf9;border:1px solid #7895bd80}.concept-world #image-dialog .dialog-close{background:#102341;color:#e5edf9}
.concept-world #privacy-settings{color-scheme:light;background:#fff;color:#172c43}.concept-world #privacy-settings h2,.concept-world #privacy-settings h3{color:#172c43}
/* Reading and navigation share a readable floor; columns are unaffected. */
.concept-world .brand-name small,.concept-world .site-footer,.concept-world .site-footer h2,.concept-world .site-footer p,.concept-world .site-footer a{font-size:15px}
.atlas-page .concept-published-entry{max-width:none;margin:20px 0 0;padding:16px 0;justify-content:flex-start;flex-wrap:wrap;border-color:var(--concept-line);color:var(--concept-text)}
.atlas-page .concept-published-entry span{color:var(--concept-muted)}
.atlas-page .concept-published-entry small{font-size:15px}
.atlas-page .category-top button{min-height:64px}
.atlas-page .category-top .entry-label{display:block}
.atlas-page .category-top .toggle-word{white-space:normal}
.atlas-page .atlas-location{line-height:1.8;flex-wrap:wrap}
.atlas-page .target-strip{margin-top:16px;padding-bottom:6px}
.atlas-page .intro,.atlas-page .object-intro{padding:24px 0;gap:16px 28px;align-items:center;flex-wrap:wrap}
.atlas-page .intro-copy,.atlas-page .object-intro p{font-size:16px;max-width:none}
.atlas-page .reader,.atlas-page .object-reader{min-width:0}
.atlas-page .reader p,.atlas-page .object-reader .definition{font-size:17px;line-height:1.85}
.atlas-page .reader-top{margin-bottom:16px}
.atlas-page .object-reader h2{margin-top:0}
.atlas-page .reader-nav,.atlas-page .object-parts{gap:8px 14px}
.atlas-page .reader-nav button,.atlas-page .object-parts button{min-height:44px}
.atlas-page .stage-toolbar{min-height:56px;height:auto;padding-block:12px;flex-wrap:wrap}
.atlas-page .scene{display:block;min-height:0;overflow-x:auto}
.atlas-page .scene svg{max-height:540px}
.atlas-page .diagram-note{position:static;display:block;padding:12px 20px;line-height:1.8;overflow-wrap:anywhere}
.atlas-page .cross-note{display:none}
.atlas-page .layer-label text,.atlas-page .layer-label .anatomy-caption{font-size:20px}
.atlas-page .layer-label .svg-name{font-size:26px}
.atlas-page .object-canvas{overflow-x:auto}
.atlas-page .object-canvas svg{max-height:520px}
.atlas-page .object-canvas .label{font-size:22px}
.atlas-page .object-source,.atlas-page .footnotes{justify-content:flex-start;flex-wrap:wrap;gap:8px 24px;font-size:15px;line-height:1.8;padding:18px 0;margin:0}
.atlas-page .atlas-directory{padding:28px 0 48px;border-top:1px solid var(--concept-line);margin-top:16px}
.atlas-page .atlas-directory>header{gap:16px;margin-bottom:20px}
.atlas-page .atlas-directory h2{margin:0;font-size:28px}
.atlas-page .atlas-directory input{font-size:16px}
.atlas-page .concept-group{padding:0;margin:20px 0}
.atlas-page .concept-group>header{margin:0 0 16px}
.atlas-page .concept-grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,360px),1fr));gap:0 32px}
.atlas-page .concept-card>a{min-height:0;padding:18px 0}
.atlas-page .concept-card h3{margin:12px 0}
.atlas-page .concept-card h3 small{display:inline;margin-left:12px;font-size:17px;font-weight:400}
.atlas-page .concept-card p{font-size:17px;line-height:1.85;margin:0;max-width:none;word-break:keep-all}
.atlas-page .shared-entry{grid-template-columns:1fr;padding:0 20px 20px}
.atlas-page .shared-connections{padding-left:0;border-left:0}
.atlas-page .concept-card b{padding-top:14px;justify-content:flex-start;gap:8px}
.cell-toc a{grid-template-columns:28px 1fr}
@media(max-width:980px){
 .atlas-page .explorer,.atlas-page .object-explorer{grid-template-columns:1fr}
 .atlas-page .reader,.atlas-page .object-reader{border-left:0;border-top:1px solid var(--concept-line);padding:22px}
 .atlas-page .layer-label .anatomy-caption{display:block}
}
@media(max-width:760px){
 /* Structure names remain in the HTML selectors and reader, at full text size. */
 .atlas-page .scene svg,.atlas-page .object-canvas svg{min-width:0;min-height:0}
 .atlas-page .scene svg text,.atlas-page .scene .layer-label,.atlas-page .object-canvas svg text{display:none}
 .atlas-page #labels,.atlas-page .object-labels{display:none}
 .atlas-page .category-top button,.atlas-page .category-top #cells-toggle{min-height:88px;gap:8px;padding:14px 12px}
 .atlas-page .target-strip{gap:8px}
 .atlas-page .target-strip button{padding:10px 16px}
 .atlas-page .intro h1,.atlas-page .object-intro h1{font-size:36px}
 .atlas-page .intro-copy{flex-basis:100%;order:3}
 .atlas-page .reset,.atlas-page .object-reset{margin-left:auto}
 .atlas-page .object-intro>p{flex-basis:100%;order:3}
 .atlas-page .object-control,.atlas-page .experiment{flex-wrap:wrap}
 .atlas-page .atlas-directory>header label{width:100%}
 .atlas-page .atlas-directory input{width:100%}
 .cell-toc nav{grid-template-columns:1fr}
}
@media print{body.concept-world{background:#fff;color:#17354d;color-scheme:light;--ink:#17354d;--muted:#536b7a;--line:#ccd6dc;--heading:#17354d}}