/* Main-page reading flow. Native scrolling, opaque surfaces, no reveal masking. */
.paleo-cover{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.1fr);grid-template-areas:"heading picture" "entry picture";column-gap:clamp(28px,4vw,64px);padding:22px 0 18px}
.paleo-cover-heading{grid-area:heading;align-self:end}
.paleo-cover-heading .paleo-eyebrow{font-size:13px;margin:0 0 14px}
.paleo-page .paleo-cover h1{font-size:clamp(48px,5.2vw,72px);margin:0 0 18px;letter-spacing:-.055em}
.paleo-cover h1>span{color:#83ddc8}
.paleo-page .paleo-cover .paleo-lead{max-width:39ch;font-size:18px;line-height:1.65;text-shadow:none}
.paleo-cover-heading .paleo-free{display:inline-flex;margin-top:16px;padding:5px 10px;font-size:12px;background:#153b48;color:#dcece8;border-color:#557a80}
.paleo-cover-figure{grid-area:picture;position:relative;min-width:0;margin:0;min-height:510px;overflow:hidden;border:1px solid #476875;border-radius:22px;background:#173b48}
.paleo-cover-figure>img{display:block;width:100%;height:100%;position:absolute;inset:0;object-fit:cover;object-position:52% center}
.paleo-cover-date{position:absolute;left:20px;top:20px;padding:10px 14px;border-radius:10px;background:#0b2938;color:#e5efea;font-size:12px;line-height:1.5}
.paleo-cover-date strong{display:block;color:#fff2d4;font-size:20px;font-weight:600}
.paleo-cover-figure>figcaption{position:absolute;inset:auto 0 0;padding:18px 20px;background:#0b2938;color:#ecf4ed;font-size:14px;line-height:1.5}
.paleo-cover-figure>figcaption span{display:block;font-size:11px;color:#bfd4d4;margin-top:5px}
.paleo-cover .paleo-journey-entry{grid-area:entry;align-content:start;align-items:start;gap:14px;margin:24px 0 0}
.paleo-cover .paleo-journey-entry-copy{border-left-color:#a5dec3;padding-left:17px}
.paleo-cover .paleo-journey-entry-copy>strong{display:block;font-size:clamp(20px,2vw,26px);line-height:1.4;max-width:30ch}
.paleo-cover .paleo-journey-entry-copy>p{display:block;font-size:14px;line-height:1.65;max-width:49ch;margin-top:10px}
.paleo-page .paleo-cover .paleo-journey-launch{justify-content:center;flex-wrap:wrap;gap:8px 14px;box-shadow:none;max-width:100%;border-radius:10px}
.paleo-cover .paleo-compose-entry{flex-basis:100%;font-size:14px;padding:5px 0}
.paleo-cover .paleo-journey-static{display:inline-flex;background:#98ead6;color:#0b2936;border-radius:9px;padding:12px 16px;font-weight:650}
:root[data-paleolab-ready="true"] .paleo-journey-static{display:none}
:root[data-paleolab-ready="true"] .paleo-worlds-intro{display:none}
.paleo-path{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin:28px 0 0;padding:21px 0;border-top:1px solid #476875;border-bottom:1px solid #476875}
.paleo-path a{display:flex;gap:12px;align-items:center;color:#e9f3ed;font-size:16px;text-decoration:none;padding:5px 0;min-height:44px;box-sizing:border-box}
.paleo-path a:hover{text-decoration:underline;text-underline-offset:5px}
.paleo-path a:focus-visible,.paleo-compose-entry:focus-visible,.paleo-worlds-intro a:focus-visible,.paleo-chapter:focus{outline:3px solid #edc790;outline-offset:4px}
.paleo-path span{color:#93c9be;font-size:11px;font-variant-numeric:tabular-nums}
.paleo-chapter{display:flex;gap:22px;align-items:baseline;padding:54px 0 20px;scroll-margin-top:20px}
.paleo-chapter>span{font-size:14px;color:#a8d4c7;font-variant-numeric:tabular-nums}
.paleo-chapter h2{font-size:clamp(28px,3vw,38px);line-height:1.2;letter-spacing:-.035em;margin:0;color:#f1f6ed}
.paleo-chapter p{max-width:65ch;font-size:16px;line-height:1.6;margin:10px 0 0;color:#bed3d3}
.paleo-options{border-top:1px solid #345564}
.paleo-options>summary{cursor:pointer;padding:17px 22px;color:#cce4df;font-size:14px;min-height:44px;box-sizing:border-box}
.paleo-options .paleo-secondary{border-top:0}
.paleo-options[open]>summary{padding-bottom:5px}
.paleo-page .paleo-reading,.paleo-page .paleo-next{max-width:none;box-sizing:border-box;width:100%;box-shadow:none;padding:clamp(24px,3.5vw,44px)}
.paleo-reading>p,.paleo-next>p,.paleo-method-prose>p{max-width:65ch;font-size:17px;line-height:1.75}
.paleo-page .paleo-reading h2,.paleo-page .paleo-reading>h3{max-width:37ch;font-size:clamp(24px,2.5vw,31px);line-height:1.3;letter-spacing:-.025em;margin:6px 0 20px}
.paleo-page .paleo-reading>h3{font-size:clamp(24px,2.2vw,29px)}
.paleo-reading .paleo-source{font-size:12px;line-height:1.65;overflow-wrap:anywhere}
.paleo-example-reading{margin-top:0}
.paleo-static-timeline{color:#edf6f0;background:#102c3d;border-radius:12px;padding:22px;margin:24px 0}
.paleo-static-frise{min-width:0}
.paleo-static-frise>svg{display:block;width:100%;min-width:0;height:auto}
.paleo-static-timeline .paleo-time-direction{margin:0 0 14px;color:#c5d9dc}
.paleo-static-timeline .paleo-time-key{margin:18px 0}
.paleo-static-timeline .paleo-time-key strong{font-size:15px;color:#e0f0eb}
.paleo-static-timeline .paleo-time-key span,.paleo-static-timeline .paleo-muted{color:#bfd4d8}
.paleo-static-timeline .paleo-gap-caption{font-size:15px;line-height:1.5;max-width:65ch}
.paleo-static-timeline>figcaption{color:#bfd4d8;font-size:12px;line-height:1.6;max-width:65ch;margin-top:18px}
.paleo-reading details>summary{cursor:pointer;min-height:44px;padding:12px 0;box-sizing:border-box;font-size:15px;line-height:1.5;text-underline-offset:4px}
.paleo-example-sources{max-width:65ch;border-top:1px solid #c6d6d0;margin-top:22px}
.paleo-example-sources p{font-size:12px;line-height:1.7}
.paleo-worlds-intro{max-width:65ch;margin:0 0 28px}
.paleo-world-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:24px}
.paleo-world-card{grid-column:span 2;min-width:0;display:flex;flex-direction:column;border:1px solid #466776;background:#f7faf8;color:#183548;border-radius:16px;overflow:hidden}
.paleo-world-card:nth-last-child(-n+2){grid-column:span 3}
.paleo-world-card>figure{margin:0;background:#123344}
.paleo-world-card>figure img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}
.paleo-world-card>figure figcaption{font-size:10px;color:#c3d8d7;padding:7px 14px;line-height:1.4}
.paleo-world-card-copy{padding:22px;display:flex;flex:1;flex-direction:column;align-items:flex-start}
.paleo-world-card .paleo-world-card-date{font-size:12px;color:#37665e;margin:0 0 8px}
.paleo-world-card-date strong{font-size:17px;margin-left:3px;font-variant-numeric:tabular-nums}
.paleo-world-card h4{font-size:22px;line-height:1.3;letter-spacing:-.02em;margin:0 0 10px;max-width:25ch}
.paleo-world-card-copy>p:not(.paleo-world-card-date){font-size:15px;line-height:1.7;max-width:54ch;margin:0 0 18px}
.paleo-world-card-copy>.paleo-world-card-place{font-size:12px!important;color:#506b70}
.paleo-world-card .paleo-world-entry{display:inline-flex;gap:5px;align-items:center;color:#17564e;font-size:14px;font-weight:650;min-height:44px;text-underline-offset:4px}
.paleo-card-sources{width:100%;margin-top:auto;padding-top:8px}
.paleo-card-sources>summary{font-size:12px;min-height:40px;padding:10px 0;cursor:pointer;color:#3c6163}
.paleo-card-sources p{font-size:12px;line-height:1.65;overflow-wrap:anywhere}
.paleo-worlds-note{font-size:12px;line-height:1.65;max-width:78ch;color:#b5cecf;margin:20px 0 0}
.paleo-page .paleo-document-reading{margin-top:46px}
.paleo-document-heading{max-width:65ch;margin-bottom:28px}
.paleo-document-heading h2{font-size:clamp(25px,2.5vw,32px);line-height:1.3;letter-spacing:-.03em;margin:10px 0 16px}
.paleo-document-heading>p:last-child{font-size:17px;line-height:1.75}
.paleo-document-example{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:32px;align-items:start}
.paleo-document-example>figure{margin:0;min-width:0}
.paleo-document-example>figure img{display:block;width:100%;height:auto;border-radius:10px;background:#d7ddd5}
.paleo-document-example figcaption{font-size:12px;line-height:1.65;margin-top:12px;color:#3e6065}
.paleo-document-example figcaption span{display:block;margin-top:6px;font-size:11px}
.paleo-document-observation>p{font-size:17px;line-height:1.75;margin:0 0 20px;max-width:45ch}
.paleo-document-observation>.paleo-observation-label{font-size:12px;font-weight:700;letter-spacing:.025em;margin-bottom:8px;color:#286258}
.paleo-document-observation details{border-top:1px solid #c6d6d0}
.paleo-document-observation details p{font-size:15px;line-height:1.75;max-width:65ch}
.paleo-method-details{border-top:1px solid #bfd1ca;margin-top:32px;padding-top:6px}
.paleo-method-prose{max-width:65ch;margin-top:22px}
.paleo-method-prose h3{font-size:22px;line-height:1.35;margin:28px 0 12px}
.paleo-method-prose>p{margin:0 0 20px}
.paleo-reference-stack{margin-top:38px}
.paleo-page .paleo-reference-stack .paleo-reading{margin:22px 0}
.paleo-library-browser>summary{color:#315e59}
.paleo-library-browser>div{margin-top:15px}
.paleo-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.paleo-playing .paleo-path,.paleo-playing .paleo-chapter,.paleo-playing .paleo-worlds-overview,.paleo-playing .paleo-document-reading{display:none}
.paleo-playing .paleo-cover{display:block;padding:0}
.paleo-playing .paleo-cover-figure,.paleo-playing .paleo-cover .paleo-journey-entry,.paleo-playing .paleo-cover .paleo-free{display:none}
.paleo-playing .paleo-cover h1{font-size:30px;margin:0}
.paleo-projection .paleo-path,.paleo-projection .paleo-chapter,.paleo-projection .paleo-worlds-overview,.paleo-projection .paleo-document-reading{display:none}
.paleo-projection .paleo-options>summary{display:none}
@media(max-width:1000px){
  .paleo-cover{column-gap:26px;grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .paleo-cover-figure{min-height:540px}
  .paleo-page .paleo-cover .paleo-lead{font-size:16px}
  .paleo-page .paleo-cover .paleo-journey-launch{padding:12px 14px;gap:6px}
  .paleo-cover .paleo-journey-launch>span:last-child{border-left:0;padding-left:0;flex-basis:100%;text-align:center}
  .paleo-world-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
  .paleo-world-card,.paleo-world-card:nth-last-child(-n+2){grid-column:auto}
  .paleo-world-card:last-child{grid-column:1/-1}
  .paleo-world-card:last-child>figure img{max-height:300px;object-position:center 62%}
  .paleo-document-example{grid-template-columns:1fr;gap:26px}
  .paleo-document-observation>p{max-width:65ch}
}
@media(max-width:700px){
  .paleo-cover{grid-template-columns:minmax(0,1fr);grid-template-areas:"heading" "picture" "entry";padding:13px 0 6px}
  .paleo-page .paleo-cover h1{font-size:46px;margin-bottom:12px}
  .paleo-cover-heading .paleo-eyebrow{font-size:11px;margin-bottom:9px}
  .paleo-page .paleo-cover .paleo-lead{font-size:16px;line-height:1.65;max-width:42ch}
  .paleo-cover-heading .paleo-free{margin-top:12px}
  .paleo-cover-figure{min-height:0;height:230px;margin-top:22px;border-radius:15px}
  .paleo-cover-date{left:12px;top:12px;padding:7px 10px;font-size:10px}
  .paleo-cover-date strong{font-size:16px}
  .paleo-cover-figure>figcaption{padding:10px 12px;font-size:11px}
  .paleo-cover-figure>figcaption span{font-size:10px;margin-top:3px}
  .paleo-cover .paleo-journey-entry{margin-top:22px;gap:12px}
  .paleo-cover .paleo-journey-entry-copy>strong{font-size:21px;max-width:31ch}
  .paleo-cover .paleo-journey-entry-copy>p{font-size:14px;line-height:1.65}
  .paleo-page .paleo-cover .paleo-journey-launch{width:100%;gap:6px 14px}
  .paleo-cover .paleo-journey-launch>span:last-child{flex-basis:auto;border-left:1px solid #396f6866;padding-left:12px}
  .paleo-path{gap:10px;margin-top:24px;padding:12px 0}
  .paleo-path a{flex-direction:column;align-items:flex-start;gap:4px;font-size:14px}
  .paleo-path span{font-size:10px}
  .paleo-chapter{gap:14px;padding:38px 0 18px}
  .paleo-chapter h2{font-size:29px}
  .paleo-chapter p{font-size:15px;line-height:1.65}
  .paleo-options>summary{padding:16px 14px}
  .paleo-page .paleo-reading,.paleo-page .paleo-next{padding:22px 20px}
  .paleo-reading>p,.paleo-next>p,.paleo-method-prose>p{font-size:16px;line-height:1.75}
  .paleo-static-timeline{padding:16px 14px;margin:20px -6px}
  .paleo-static-timeline .paleo-time-key{grid-template-columns:1fr}
  .paleo-static-timeline .paleo-time-direction{font-size:10px}
  .paleo-static-frise .paleo-timeline text{font-size:40px}
  .paleo-world-grid{grid-template-columns:minmax(0,1fr)}
  .paleo-world-card:last-child{grid-column:auto}
  .paleo-world-card-copy{padding:22px}
  .paleo-world-card:last-child>figure img{max-height:none}
  .paleo-document-heading>p:last-child,.paleo-document-observation>p{font-size:16px;line-height:1.75}
}
@media(forced-colors:active){
  .paleo-path,.paleo-world-card,.paleo-cover-figure{border-color:CanvasText}
  .paleo-path a,.paleo-path span,.paleo-chapter h2,.paleo-chapter p,.paleo-chapter>span,.paleo-worlds-intro h3,.paleo-worlds-intro p,.paleo-worlds-note{color:CanvasText}
  .paleo-cover-date,.paleo-cover-figure>figcaption,.paleo-world-card,.paleo-static-timeline{background:Canvas;color:CanvasText}
  .paleo-cover-date strong,.paleo-world-card h4,.paleo-world-card p,.paleo-world-card .paleo-world-entry,.paleo-world-card summary{color:CanvasText}
}
@media print{
  .paleo-cover{display:block}.paleo-cover-figure{height:250px;min-height:0}
  .paleo-path,.paleo-options,.paleo-world-entry,.paleo-journey-launch{display:none!important}
  .paleo-chapter h2,.paleo-chapter p,.paleo-chapter>span,.paleo-worlds-intro h3,.paleo-worlds-intro p,.paleo-worlds-note{color:#111}
  .paleo-world-grid{display:block}.paleo-world-card{break-inside:avoid;margin-bottom:20px}
}