/* A permanent collection within the library. The separate discovery column
   keeps ordinary articles visible beside the long feature. */
.earth-front,.earth-page,.earth-index-entry,.earth-chapter-nav,.earth-comparison{--earth-ink:#203f35;--earth-muted:#536256;--earth-paper:#faf7ee;--earth-rule:#c9d1bf;--earth-copper:#924724;--earth-green:#365e48;color:var(--earth-ink)}
.earth-front *,.earth-page *,.earth-index-entry *,.earth-chapter-nav *,.earth-comparison *{box-sizing:border-box}
.earth-front :is(h2,h3,p,a),.earth-page :is(h1,h2,h3,h4,p,a),.earth-chapter-nav :is(a,strong),.earth-comparison :is(h2,h3,p,dd){overflow-wrap:break-word}
.earth-front :is(a,button,input,summary):focus-visible,.earth-page :is(a,button,input,summary):focus-visible,.earth-index-entry :is(a,button):focus-visible,.earth-chapter-nav :is(a,summary):focus-visible,.earth-comparison a:focus-visible{outline:3px solid #a7502d;outline-offset:5px}
.earth-kicker{margin:0 0 12px;color:var(--earth-copper);font:750 12px/1.7 var(--sans);letter-spacing:.11em}
.earth-front{display:grid;grid-template-columns:minmax(0,2fr) minmax(270px,1fr);gap:24px;max-width:1416px;margin:50px auto 44px;padding:0 28px;align-items:stretch}
.earth-front-main{position:relative;display:grid;grid-template-columns:minmax(0,1.45fr) minmax(150px,.75fr);align-content:center;gap:20px 12px;padding:34px 30px 0;border:1px solid #bccbb8;border-top:5px solid #315b45;background:linear-gradient(125deg,#f4f1e0 0,#e8eddf 100%);box-shadow:0 8px 24px #1c422009}
.earth-front-copy{min-width:0;position:relative;z-index:1}
.earth-front-main h2{max-width:15ch;margin:0 0 18px;font:750 clamp(29px,2.8vw,42px)/1.4 var(--serif);letter-spacing:.01em}
.earth-front-main h2 a{text-decoration:none;color:var(--earth-ink)}
.earth-front-main h2 .earth-title-phrase,.earth-opening h1 .earth-title-phrase{display:inline-block;max-width:100%;white-space:normal;overflow-wrap:anywhere}
.earth-front-main h2 a:hover{text-decoration:underline;text-decoration-thickness:1.5px;text-underline-offset:7px}
.earth-front-dek{max-width:39em;font-size:16px;line-height:1.85;margin:0 0 23px}
.earth-primary-link{display:inline-flex;justify-content:space-between;align-items:center;gap:22px;min-height:50px;padding:12px 18px;border:1px solid #2f5943;background:#2f5943;color:#fffef6!important;text-decoration:none;font-weight:750;line-height:1.5}
.earth-primary-link:hover{background:#234735}
.earth-primary-link>span{font-size:21px;line-height:1;flex-shrink:0}
.earth-front-ways{display:flex;gap:5px 24px;flex-wrap:wrap;margin-top:8px;font-size:13px}
.earth-front-ways a{display:inline-flex;align-items:center;min-height:44px;color:#355747;text-underline-offset:4px}
.earth-front-foot{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:18px;margin:0;padding:17px 0;border-top:1px solid #b8c5ac;font-size:12px;line-height:1.8;color:#4b624e}
.earth-front-foot>span{flex:0 0 auto;font:700 17px/1.5 var(--serif);color:#365941}
.earth-front-nearby{min-width:0;padding:25px 27px 19px;background:#fdfbf4;border-top:5px solid #b07b4c;border-bottom:1px solid #c6cfb9}
.earth-front-nearby>.earth-kicker{margin-bottom:9px}
.earth-front-nearby h2{font:700 25px/1.5 var(--serif);margin:0 0 12px}
.earth-front-nearby>p:not(.earth-kicker){font-size:14px;line-height:1.85;color:#50614f;margin:0 0 13px}
.earth-front-nearby ul{list-style:none;padding:0;margin:0;border-top:1px solid #c7cfb9}
.earth-front-nearby li{border-bottom:1px solid #c7cfb9}
.earth-front-nearby li>a{display:grid;grid-template-columns:minmax(0,1fr) 19px;gap:3px 10px;text-decoration:none;color:var(--earth-ink);padding:13px 0;min-height:72px}
.earth-front-nearby li>a>span:first-child{grid-column:1;color:#647253;font-size:11px;line-height:1.6}
.earth-front-nearby li strong{grid-column:1;font:700 17px/1.65 var(--serif)}
.earth-front-nearby li>a:hover strong{text-decoration:underline;text-underline-offset:4px}
.earth-front-nearby .earth-nearby-arrow{grid-column:2;grid-row:1/3;align-self:center;color:#5b7454;font-size:18px}
.earth-text-link{display:inline-flex;align-items:center;gap:10px;min-height:44px;color:var(--earth-green);font-size:14px;font-weight:700;text-underline-offset:5px}
.earth-front-nearby>.earth-text-link{margin-top:7px}
.earth-index-entry{margin:28px 0 38px}
.earth-index-entry .earth-front-main{grid-template-columns:minmax(0,1.6fr) minmax(180px,.8fr);padding:35px 40px 0}
.earth-index-entry .earth-front-main h2{max-width:none}

/* Feature entrance. Its illustrated cover is styled after the exhibit rules below. */
.page-wrap.earth-page{max-width:1360px;padding:0 0 62px;border-top-color:#34563c;background:var(--earth-paper)}
.earth-opening{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(190px,.7fr);gap:26px 35px;padding:clamp(27px,4.6vw,60px) clamp(24px,4.5vw,60px) 0;background:linear-gradient(125deg,#f4f0df,#e5ecdc);border-bottom:1px solid #c1ccb5}
.earth-opening>div:first-child{min-width:0}
.earth-opening h1{max-width:15ch;font:750 clamp(35px,4.4vw,65px)/1.3 var(--serif);letter-spacing:.01em;margin:13px 0 24px}
.earth-opening-lead{font:650 clamp(18px,1.8vw,23px)/1.8 var(--serif);max-width:35em;margin:0 0 12px}
.earth-opening-dek{font-size:17px;line-height:1.9;max-width:43em;margin:0 0 22px}
.earth-opening-actions{display:flex;align-items:center;flex-wrap:wrap;gap:10px 25px;margin:20px 0 0}
.earth-opening-actions .earth-text-link{font-size:15px}
.earth-opening-notes{list-style:none;grid-column:1/-1;display:flex;flex-wrap:wrap;gap:12px 30px;margin:8px 0 0;padding:19px 0;border-top:1px solid #b6c5ab;font-size:13px;font-weight:650;line-height:1.7}
.earth-opening-notes li{display:flex;align-items:center;gap:10px}
.earth-opening-notes li::before{content:'';width:6px;height:6px;border:1px solid #687f56;transform:rotate(45deg);flex:0 0 6px}
.earth-reading-invitation{padding:16px clamp(24px,4.5vw,60px);margin:0;font-size:14px;line-height:1.9;background:#faf8ef;border-bottom:1px solid #d5d9c8;color:#4d604d}
.earth-section{padding:0 clamp(24px,4.5vw,60px);margin:48px 0 0;min-width:0}
.earth-section-heading{max-width:850px;margin-bottom:25px}
.earth-section-heading>.earth-kicker{margin-bottom:10px}
.earth-section-heading h2{font:730 clamp(27px,3.1vw,40px)/1.5 var(--serif);margin:0 0 15px}
.earth-section-heading>p:last-child{font-size:16px;line-height:1.9;margin:0;max-width:49em}

/* Every time window is linear. Labels stay outside the plotted coordinate
   plane so recent markers may crowd honestly without their text overlapping. */
.earth-window-controls{padding:0;border:0;margin:24px 0 17px;min-width:0}
.earth-window-controls legend{padding:0 0 10px;font-size:14px;font-weight:750}
.earth-window-controls>div{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}
.earth-window-controls label{position:relative;display:block;min-width:0;cursor:pointer}
.earth-window-controls input{position:absolute;width:1px;height:1px;opacity:0}
.earth-window-controls label>span{display:flex;flex-direction:column;justify-content:center;gap:5px;min-height:82px;height:100%;padding:12px 15px;border:1px solid #9eaf96;background:#fffdf7;line-height:1.5}
.earth-window-controls strong{font-size:16px;font-weight:750}
.earth-window-controls small{font-size:12px;color:#5a6d56}
.earth-window-controls input:checked+span{color:#fffef5;background:#315740;border-color:#315740;box-shadow:inset 0 -3px 0 #d1b378}
.earth-window-controls input:checked+span small{color:#e3ead3}
.earth-window-controls input:focus-visible+span{outline:3px solid #a7502d;outline-offset:4px}
.earth-window-controls label:hover>span{border-color:#315740}
.earth-scale-rule{font-size:13px;line-height:1.85;max-width:75em;color:#5b6556;margin:16px 0 20px}
.earth-scale-rule strong{color:#304e3b;display:block;font-weight:700}
.earth-time-panel{border:1px solid #b7c4ae;background:#fffdf7;padding:23px 24px 0;margin-bottom:22px;min-width:0}
.earth-time-panel[hidden],.earth-window-controls[hidden]{display:none!important}
.earth-window-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;padding-bottom:23px}
.earth-window-heading>div{min-width:0}
.earth-window-heading .earth-kicker{font-size:11px;margin-bottom:8px;letter-spacing:.04em}
.earth-window-heading h3{font:700 25px/1.5 var(--serif);margin:0}
.earth-scale-numbers{display:flex;gap:24px;margin:0;flex-wrap:wrap}
.earth-scale-numbers>div{border-left:1px solid #c8d1bd;padding-left:17px;max-width:16em}
.earth-scale-numbers dt{font-size:11px;color:#5b6a53;line-height:1.7}
.earth-scale-numbers dd{font:700 20px/1.6 var(--serif);margin:5px 0 0}
.earth-time-plot{--earth-label-width:31%;min-width:0}
.earth-time-ruler,.earth-marker-row{display:grid;grid-template-columns:minmax(0,var(--earth-label-width)) minmax(0,1fr);column-gap:22px;align-items:center}
.earth-time-ruler{padding-bottom:9px;margin-bottom:5px;border-bottom:1px solid #98ab8e}
.earth-time-ruler-caption{font-size:12px;color:#5b6a53;font-weight:700}
.earth-time-ticks{display:flex;justify-content:space-between;gap:7px;font-size:10px;line-height:1.6;margin-inline:8px;color:#51664b}
.earth-time-ticks>span{max-width:42%;min-width:0}
.earth-time-ticks>span:nth-child(2){text-align:center}
.earth-time-ticks>span:last-child{text-align:right}
.earth-marker-rows{list-style:none;margin:0;padding:0}
.earth-marker-row{padding:12px 0;border-bottom:1px solid #e0e4d6;min-height:72px}
.earth-marker-row:last-child{border-bottom:0}
.earth-marker-name{min-width:0}
.earth-marker-name a{font-size:13px;line-height:1.6;font-weight:750;text-decoration:none;color:#2f4f39}
.earth-marker-name a:hover{text-decoration:underline;text-underline-offset:3px}
.earth-marker-name>span{display:block;margin-top:3px;color:#616d5a;font-size:11px;line-height:1.6}
.earth-marker-track{position:relative;height:38px;margin-inline:8px;background:repeating-linear-gradient(to right,#a5b69666 0 1px,transparent 1px 10%);border-right:1px solid #a5b69666;min-width:0}
.earth-marker-track::before{position:absolute;content:'';left:0;right:0;top:50%;height:1px;background:#9aaf8a}
.earth-marker-track svg{position:relative;display:block;width:100%;height:38px;overflow:visible}
.earth-marker-point{stroke:#a45c32;stroke-width:5px;stroke-linecap:round;vector-effect:non-scaling-stroke}
.earth-outside{margin:17px -24px 0;padding:14px 24px;background:#f3f3e8;border-top:1px solid #cbd2bf}
.earth-outside h4{font-size:12px;line-height:1.7;margin:0 0 10px;font-weight:750}
.earth-outside h4>span{margin-left:7px;color:#798466}
.earth-outside ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px 20px}
.earth-outside li{display:flex;flex-wrap:wrap;gap:2px 8px;line-height:1.65;align-items:baseline}
.earth-outside li>a{font-size:12px;color:#4d6246;text-underline-offset:3px}
.earth-outside li>span{font-size:11px;color:#6b735f}
.earth-outside p{font-size:11px;line-height:1.8;color:#626e57;margin:10px 0 0}
.earth-outside>p:first-child{margin:0}
.earth-live:empty{display:none}
.earth-live{padding:11px 14px;border-left:3px solid #8da17b;background:#eff3e6;font-size:13px;line-height:1.8;margin:12px 0 20px}
.earth-noscript{padding:14px 18px;background:#f0eedf;border-left:3px solid #9f774e;font-size:14px;line-height:1.8}
.earth-size-comparison{display:grid;grid-template-columns:minmax(145px,.65fr) minmax(0,1.8fr);gap:25px;margin:27px 0 32px;padding:25px 29px;background:#e8eddf;border-block:1px solid #c0cbb5;align-items:center}
.earth-size-comparison .earth-kicker{font-size:11px;color:#44603c;letter-spacing:.04em}
.earth-size-comparison .earth-tiny-number{font:500 clamp(36px,5vw,59px)/1 var(--serif);letter-spacing:-.04em;color:#31543b;margin:14px 0 0}
.earth-tiny-number>span{font:600 15px/1 var(--sans);letter-spacing:0;margin-left:9px}
.earth-size-comparison>div:last-child>p:first-child{font-size:16px;line-height:1.9;margin:0 0 10px}
.earth-equation{font-size:13px;line-height:1.8;letter-spacing:.03em;overflow-wrap:anywhere;margin:9px 0;color:#40563c}
.earth-model-note{font-size:12px;line-height:1.9;color:#5c6a53;margin:10px 0}
.earth-dates h3{font:700 24px/1.6 var(--serif);margin:0 0 10px}
.earth-dates>p{font-size:14px;line-height:1.9;max-width:65em;margin:0 0 18px}
.earth-dating-details{border-block:1px solid #b9c6ac;padding:0 18px;background:#fcfaf0}
.earth-dating-details summary{font-size:14px;font-weight:700;line-height:1.75;padding:16px 0;min-height:54px;cursor:pointer}
.earth-dating-details>.earth-model-note{margin:8px 0 22px}
.earth-source-list{list-style:none;padding:0;margin:0}
.earth-source-list>li{padding:24px 0;border-top:1px solid #d0d7c2;scroll-margin-top:30px}
.earth-source-heading{display:flex;align-items:flex-start;gap:16px}
.earth-source-number{font:500 28px/1.4 var(--serif);color:#819470;min-width:38px}
.earth-evidence-kind{font-size:11px;line-height:1.8;color:#805635}
.earth-source-heading h4{font:700 19px/1.65 var(--serif);margin:2px 0 6px}
.earth-source-heading p{font-size:13px;line-height:1.7;margin:0;color:#53664d}
.earth-source-list>li>p:not(.earth-source-reference){font-size:14px;line-height:1.9;max-width:68em;margin:12px 0 7px}
.earth-source-reference{font-size:11px;line-height:1.8;color:#67735d;margin:10px 0 3px}
.earth-source-list nav{display:flex;flex-wrap:wrap;gap:0 25px;font-size:13px}
.earth-source-list nav>a{display:inline-flex;align-items:center;gap:7px;min-height:44px;color:#345b3e;text-underline-offset:4px}

/* Independent chapters: numbered doors rather than a progress ladder. */
.earth-chapter-map{padding-top:39px;border-top:1px solid #d3d6c4}
.earth-chapter-grid{list-style:none;display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:19px;margin:0;padding:0}
.earth-chapter-card{grid-column:span 3;min-width:0;display:flex;flex-direction:column;padding:21px 22px 0;border:1px solid #c9cfbb;border-top:4px solid #798e66;background:#fffdf6}
.earth-chapter-card:nth-child(-n+3){grid-column:span 4;border-top-color:#5e8274}
.earth-chapter-top{display:flex;align-items:center;gap:13px;margin-bottom:16px;border-bottom:1px solid #d8dccb;padding-bottom:15px}
.earth-chapter-number{font:500 33px/1 var(--serif);letter-spacing:-.04em;color:#708565;flex:0 0 auto}
.earth-chapter-top p{font-size:12px;font-weight:650;line-height:1.75;margin:0;color:#617354}
.earth-chapter-card h3{font:700 23px/1.65 var(--serif);margin:0 0 14px}
.earth-chapter-card h3 a{color:#274835;text-decoration:none}
.earth-chapter-card h3 a:hover{text-decoration:underline;text-underline-offset:5px}
.earth-chapter-card>p{font-size:14px;line-height:1.9;margin:0 0 23px;color:#52624c}
.earth-chapter-footer{display:flex;align-items:center;justify-content:space-between;gap:7px 10px;flex-wrap:wrap;margin-top:auto;padding:12px 0;border-top:1px solid #d8dccb;font-size:11px;line-height:1.7;color:#64745a}
.earth-chapter-footer>a{display:inline-flex;align-items:center;gap:7px;min-height:44px;color:#365c3d;font-size:13px;font-weight:750;text-decoration:none}
.earth-chapter-footer>a:hover{text-decoration:underline}
.earth-evidence-guide{margin-top:43px}
.earth-evidence-guide-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-block:1px solid #bbc8af;background:#f1f1e3}
.earth-evidence-guide-grid>article{padding:25px 28px;min-width:0;border-right:1px solid #c6d0ba}
.earth-evidence-guide-grid>article:last-child{border-right:0}
.earth-guide-range{font-size:12px;font-weight:650;letter-spacing:.14em;color:#7b674b}
.earth-evidence-guide-grid h3{font:700 22px/1.65 var(--serif);margin:12px 0}
.earth-evidence-guide-grid p{font-size:14px;line-height:1.9;margin:0 0 10px;color:#56634b}
.earth-library-detours{padding-top:43px;border-top:1px solid #cbd2be}
.earth-detour-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:27px}
.earth-detour-grid>article{min-width:0;border-top:3px solid #a78252;padding-top:22px;display:flex;flex-direction:column}
.earth-detour-grid h3{font:700 23px/1.7 var(--serif);margin:0 0 14px}
.earth-detour-grid h3>a{color:#264835;text-decoration:none}
.earth-detour-grid h3>a:hover{text-decoration:underline;text-underline-offset:5px}
.earth-detour-grid>article>p:not(.earth-kicker){font-size:14px;line-height:1.9;margin:0 0 12px;color:#596751}
.earth-detour-grid>article>.earth-text-link{margin-top:auto}
.earth-exit-links{display:flex;gap:10px 35px;flex-wrap:wrap;border-top:1px solid #c7d0ba;padding-top:17px;margin-top:24px}
.earth-exit-links>a{display:inline-flex;align-items:center;gap:19px;font-size:14px;font-weight:700;min-height:48px;color:#345a3d;text-underline-offset:5px}

/* Chapter location and detours remain readable when article prose is enlarged. */
.earth-chapter-nav{margin:26px 0;padding:0 23px;background:#eff2e6;border:1px solid #bdccb3;border-top:3px solid #577448;clear:both}
.earth-chapter-nav-heading{display:flex;flex-wrap:wrap;gap:7px 24px;align-items:center;justify-content:space-between;padding:11px 0;border-bottom:1px solid #c2d0b9;font-size:12px;line-height:1.8;color:#5b6e50}
.earth-chapter-nav-heading>a{display:inline-flex;align-items:center;min-height:44px;font:700 17px/1.6 var(--serif);color:#345938;text-decoration:none}
.earth-chapter-prev-next{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px;padding:17px 0}
.earth-chapter-prev-next>:is(a,div){display:flex;flex-direction:column;justify-content:center;gap:5px;min-height:55px;min-width:0;color:#35573a;text-decoration:none}
.earth-chapter-prev-next>:is(a,div):not(:last-child){border-right:1px solid #c8d3bf;padding-right:15px}
.earth-chapter-prev-next>:is(a,div)>span{font-size:11px;line-height:1.7;color:#6a785d}
.earth-chapter-prev-next strong{font:700 16px/1.7 var(--serif)}
.earth-chapter-prev-next>a:hover strong{text-decoration:underline;text-underline-offset:4px}
.earth-chapter-nav-all{border-top:1px solid #c9d4c0}
.earth-chapter-nav-all summary{min-height:48px;padding:12px 0;font-size:13px;font-weight:650;line-height:1.8;color:#486341;cursor:pointer}
.earth-chapter-nav-all ol{list-style:none;margin:0 0 16px;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 18px}
.earth-chapter-nav-all li>a{display:flex;align-items:center;flex-wrap:wrap;gap:5px 11px;padding:9px 10px;min-height:44px;text-decoration:none;font-size:13px;line-height:1.7;color:#48613e}
.earth-chapter-nav-all li>a>span{color:#7a8e67;font-size:12px}
.earth-chapter-nav-all li>a>small{font-size:10px;color:#5d754d}
.earth-chapter-nav-all li>a[aria-current]{background:#dde7d2;box-shadow:inset 3px 0 0 #547643;font-weight:700}
.earth-chapter-nav-all li>a:hover{background:#e2e9d8}
.earth-chapter-detour{display:flex;flex-wrap:wrap;gap:5px 16px;align-items:center;border-top:1px solid #c9d4c0;padding:9px 0 12px;line-height:1.8}
.earth-chapter-detour>span{font-size:11px;color:#7c623e}
.earth-chapter-detour>a{display:inline-flex;align-items:center;gap:8px;min-height:44px;font-size:13px;font-weight:600;color:#4d673d;text-underline-offset:4px}

/* Root-authored comparisons use responsive evidence cards, not a wide table. */
.earth-comparison{margin:31px 0 36px;padding:25px 25px 20px;background:#f3f1e3;border:1px solid #c7cdb7;border-top:4px solid #819065;min-width:0}
.earth-comparison h2{font:700 clamp(24px,2.4vw,31px)/1.6 var(--serif);margin:0 0 16px}
.earth-comparison>p{font-size:15px;line-height:1.9}
.earth-evidence-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:17px;margin:22px 0}
.earth-evidence-card{padding:20px 19px;background:#fffdf7;border:1px solid #c6ceba;min-width:0}
.earth-evidence-card h3{font:700 20px/1.65 var(--serif);color:#345b3e;margin:0 0 16px;padding-bottom:12px;border-bottom:1px solid #d6dcc8}
.earth-evidence-card dl{margin:0}
.earth-evidence-card dl>div{margin-bottom:18px}
.earth-evidence-card dl>div:last-child{margin-bottom:0}
.earth-evidence-card dt{font-size:11px;font-weight:750;line-height:1.7;letter-spacing:.04em;color:#84704e;margin-bottom:5px}
.earth-evidence-card dd{font-size:14px;line-height:1.9;margin:0;color:#4d6047}
.earth-comparison .earth-comparison-caption{font-size:12px;line-height:1.9;color:#647056;border-top:1px solid #cbd3bc;padding-top:13px;margin:12px 0}
.earth-comparison-sources{font-size:12px;line-height:1.9;color:#657255;margin:13px 0 0}
.earth-comparison-sources a{color:#43623a;text-underline-offset:3px;overflow-wrap:anywhere}
.media-earth-art svg{display:block;width:100%;height:auto;max-height:340px}

@media(max-width:1100px){
 .earth-front{grid-template-columns:minmax(0,1.65fr) minmax(265px,1fr);gap:18px;padding-inline:22px}
 .earth-front-main{padding:25px 24px 0;grid-template-columns:minmax(0,1fr)}
 .earth-front-copy{max-width:34em}
 .earth-front-main h2{max-width:15ch;padding-right:42px;font-size:34px}
 .earth-front-dek{max-width:30em}
 .earth-front-nearby{padding-inline:22px}
 .earth-front-nearby h2{font-size:23px}
 .earth-opening{grid-template-columns:minmax(0,1.6fr) minmax(150px,.65fr);gap:23px}
 .earth-opening h1{font-size:clamp(34px,4.7vw,50px)}
 .earth-window-heading{flex-direction:column;gap:17px}
 .earth-scale-numbers{width:100%;gap:20px}
 .earth-scale-numbers>div:first-child{border-left:0;padding-left:0}
 .earth-chapter-card{grid-column:span 6!important}
 .earth-chapter-card:last-child{grid-column:span 12!important}
 .earth-chapter-card:last-child h3{max-width:33em}
 .earth-evidence-guide-grid>article{padding:22px 21px}
 .earth-detour-grid{gap:22px}
}
@media(max-width:800px){
 .earth-front{grid-template-columns:minmax(0,1fr);gap:23px;margin-top:35px}
 .earth-front-main{grid-template-columns:minmax(0,1.6fr) minmax(130px,.65fr);padding:28px 28px 0}
 .earth-front-main h2{padding-right:0;font-size:33px}
 .earth-front-nearby{padding:22px 25px 12px}
 .earth-front-nearby ul{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 22px}
 .earth-front-nearby li{border-bottom:0;min-width:0}
 .earth-front-nearby li>a{grid-template-columns:minmax(0,1fr);height:100%;align-content:start}
 .earth-front-nearby li strong{font-size:17px}
 .earth-front-nearby .earth-nearby-arrow{grid-column:1;grid-row:3;margin-top:5px}
 .earth-opening{grid-template-columns:minmax(0,1fr) 150px}
 .earth-opening h1{font-size:37px;max-width:none}
 .earth-opening-lead{font-size:19px}
 .earth-opening-dek{font-size:16px}
 .earth-window-controls>div{grid-template-columns:repeat(2,minmax(0,1fr))}
 .earth-window-controls label>span{min-height:74px}
 .earth-time-plot{--earth-label-width:38%}
 .earth-time-panel{padding-inline:19px}
 .earth-outside{margin-inline:-19px;padding-inline:19px}
 .earth-time-ruler,.earth-marker-row{column-gap:14px}
 .earth-time-ticks>span:nth-child(2){display:none}
 .earth-size-comparison{grid-template-columns:minmax(0,1fr);gap:20px;padding:24px}
 .earth-size-comparison>div:first-child{display:flex;align-items:center;justify-content:space-between;gap:15px}
 .earth-size-comparison .earth-kicker{max-width:16em;margin:0}
 .earth-size-comparison .earth-tiny-number{margin:0;white-space:nowrap}
 .earth-evidence-guide-grid{grid-template-columns:minmax(0,1fr)}
 .earth-evidence-guide-grid>article{border-right:0;border-bottom:1px solid #c6d0ba;padding:22px 25px}
 .earth-evidence-guide-grid>article:last-child{border-bottom:0}
 .earth-evidence-guide-grid h3{margin-top:8px}
 .earth-detour-grid{grid-template-columns:minmax(0,1fr);gap:22px}
 .earth-detour-grid>article{padding-top:20px;border-top-width:2px}
 .earth-detour-grid h3{font-size:24px;margin-bottom:11px}
}
@media(max-width:600px){
 .earth-front{padding-inline:18px;margin-block:30px}
 .earth-front-main{display:block;padding:24px 23px 0;overflow:hidden}
 .earth-front-main h2{font-size:31px;max-width:13ch;margin-bottom:18px;padding-right:0}
 .earth-front-main .earth-kicker{max-width:20em;font-size:11px}
 .earth-front-dek{font-size:15px;line-height:1.9;margin-bottom:19px}
 .earth-front-foot{margin-top:17px;gap:12px;font-size:11px}
 .earth-front-ways{gap:0 20px;font-size:12px}
 .earth-front-nearby{padding:21px 23px 15px}
 .earth-front-nearby h2{font-size:25px}
 .earth-front-nearby ul{display:block}
 .earth-front-nearby li{border-bottom:1px solid #cbd3bd}
 .earth-front-nearby li>a{grid-template-columns:minmax(0,1fr) 16px;padding:13px 0}
 .earth-front-nearby .earth-nearby-arrow{grid-column:2;grid-row:1/3;margin:0}
 .earth-front-nearby li strong{font-size:18px;line-height:1.65}
 .earth-index-entry .earth-front-main{display:block;padding:25px 24px 0;overflow:hidden}
 .page-wrap.earth-page{margin-inline:12px;padding-bottom:37px}
 .earth-opening{position:relative;display:block;padding:29px 24px 0;overflow:hidden}
 .earth-opening>div:first-child{position:relative;z-index:1}
 .earth-opening h1{font-size:37px;line-height:1.35;max-width:12ch;margin:14px 0 24px}
 .earth-opening-lead{font-size:19px;line-height:1.8;max-width:30em}
 .earth-opening-dek{font-size:15px;line-height:1.9}
 .earth-opening-actions{gap:5px 22px;margin-bottom:10px}
 .earth-opening-actions .earth-primary-link{font-size:14px;min-height:50px;padding:12px 15px}
 .earth-opening-actions .earth-text-link{font-size:13px}
 .earth-opening-notes{padding:16px 0;gap:8px 16px;font-size:11px;position:relative;z-index:1}
 .earth-reading-invitation{padding:15px 24px;font-size:12px}
 .earth-section{padding-inline:20px;margin-top:33px}
 .earth-section-heading h2{font-size:28px;line-height:1.55;margin-bottom:14px}
 .earth-section-heading>.earth-kicker{font-size:10px;letter-spacing:.07em}
 .earth-section-heading>p:last-child{font-size:15px;line-height:1.9}
 .earth-window-controls{margin-top:20px}
 .earth-window-controls legend{font-size:13px}
 .earth-window-controls label>span{padding:11px 12px;min-height:80px}
 .earth-window-controls strong{font-size:14px;line-height:1.6}
 .earth-window-controls small{font-size:11px}
 .earth-scale-rule{font-size:12px;line-height:1.9}
 .earth-time-panel{padding:20px 14px 0}
 .earth-window-heading{gap:13px;padding-bottom:17px}
 .earth-window-heading h3{font-size:23px}
 .earth-window-heading .earth-kicker{font-size:10px}
 .earth-scale-numbers{gap:16px}
 .earth-scale-numbers>div{padding-left:14px;max-width:45%}
 .earth-scale-numbers dt{font-size:10px}
 .earth-scale-numbers dd{font-size:17px;line-height:1.6}
 .earth-time-plot{--earth-label-width:43%}
 .earth-time-ruler,.earth-marker-row{column-gap:10px}
 .earth-time-ruler-caption{font-size:10px}
 .earth-time-ticks{font-size:9px;line-height:1.65;margin-inline:6px}
 .earth-time-ticks>span{max-width:65%}
 .earth-marker-row{padding:13px 0;min-height:87px}
 .earth-marker-name a{font-size:12px;line-height:1.7}
 .earth-marker-name>span{font-size:10px;line-height:1.7}
 .earth-marker-track{margin-inline:6px;height:37px}
 .earth-marker-point{stroke-width:4px}
 .earth-outside{margin-inline:-14px;padding:14px}
 .earth-outside ul{grid-template-columns:minmax(0,1fr);gap:8px}
 .earth-outside li>a{font-size:11px}
 .earth-outside li>span{font-size:10px}
 .earth-outside p{font-size:10px}
 .earth-size-comparison{padding:20px 18px;margin-top:22px;gap:18px}
 .earth-size-comparison .earth-kicker{font-size:10px}
 .earth-size-comparison .earth-tiny-number{font-size:40px}
 .earth-tiny-number>span{font-size:12px;margin-left:6px}
 .earth-size-comparison>div:last-child>p:first-child{font-size:14px}
 .earth-equation{font-size:11px}
 .earth-model-note{font-size:11px}
 .earth-dates h3{font-size:23px}
 .earth-dates>p{font-size:13px}
 .earth-dating-details{padding-inline:13px}
 .earth-dating-details summary{font-size:13px}
 .earth-source-heading{gap:10px}
 .earth-source-number{font-size:24px;min-width:30px}
 .earth-source-heading h4{font-size:18px}
 .earth-source-heading p{font-size:12px}
 .earth-source-list>li>p:not(.earth-source-reference){font-size:13px}
 .earth-source-reference{font-size:10px}
 .earth-source-list nav{font-size:12px;gap:0 18px}
 .earth-chapter-map{padding-top:30px}
 .earth-chapter-grid{grid-template-columns:minmax(0,1fr);gap:18px}
 .earth-chapter-card{grid-column:1!important;padding:20px 20px 0}
 .earth-chapter-card:last-child{grid-column:1!important}
 .earth-chapter-card h3{font-size:25px;line-height:1.6}
 .earth-chapter-card>p{font-size:14px}
 .earth-chapter-top{margin-bottom:16px}
 .earth-evidence-guide-grid>article{padding:21px}
 .earth-evidence-guide-grid h3{font-size:23px}
 .earth-evidence-guide-grid p{font-size:14px}
 .earth-library-detours{padding-top:32px}
 .earth-exit-links{gap:4px 25px}
 .earth-exit-links>a{font-size:13px;min-height:48px}
 .earth-chapter-nav{padding-inline:17px;margin-block:22px}
 .earth-chapter-nav-heading{display:block;padding:9px 0 13px}
 .earth-chapter-nav-heading>span{display:block;font-size:11px}
 .earth-chapter-prev-next{grid-template-columns:minmax(0,1fr);gap:0;padding:7px 0}
 .earth-chapter-prev-next>:is(a,div){padding:11px 0;min-height:64px}
 .earth-chapter-prev-next>:is(a,div):not(:last-child){border-right:0;border-bottom:1px solid #ccd5c1;padding-right:0}
 .earth-chapter-prev-next strong{font-size:16px}
 .earth-chapter-nav-all ol{grid-template-columns:minmax(0,1fr);gap:4px}
 .earth-chapter-detour{display:block;padding-bottom:13px}
 .earth-chapter-detour>span{display:block;margin:3px 0 2px}
 .earth-chapter-detour>a{font-size:13px}
 .earth-comparison{padding:22px 17px 17px;margin-block:26px}
 .earth-comparison h2{font-size:25px}
 .earth-evidence-cards{gap:15px}
 .earth-evidence-card{padding:19px 17px}
 .earth-evidence-card h3{font-size:21px}
 .earth-evidence-card dd{font-size:14px}
 .media-earth-art svg{max-height:280px}
}
@media(prefers-reduced-motion:reduce){.earth-front *,.earth-page *,.earth-chapter-nav *{scroll-behavior:auto;transition:none;animation:none}}
@media(forced-colors:active){
 .earth-front-main,.earth-front-nearby,.earth-opening,.earth-time-panel,.earth-window-controls label>span,.earth-chapter-card,.earth-chapter-nav,.earth-evidence-card{background:Canvas;border-color:CanvasText;color:CanvasText}
 .earth-window-controls input:checked+span{background:Highlight;color:HighlightText;border-color:Highlight}
 .earth-window-controls input:checked+span small{color:HighlightText}
 .earth-marker-track{border-inline:1px solid CanvasText;background:none}
 .earth-marker-track::before{background:CanvasText}
 .earth-marker-point{stroke:CanvasText;forced-color-adjust:none}
 .earth-primary-link{background:ButtonFace;color:ButtonText!important;border-color:ButtonText}
 .earth-front :focus-visible,.earth-page :focus-visible,.earth-chapter-nav :focus-visible{outline-color:Highlight}
}

/* A compact entrance keeps the new feature visible before entering the library. */
.city-arrival-strip{flex-wrap:wrap}
.city-arrival-strip>p{min-width:0;max-width:100%}
.city-arrival-links{display:flex;flex-wrap:wrap;align-items:center;gap:8px 24px;min-width:0}
.city-arrival-links .city-arrival-feature{gap:8px;color:#174b43;overflow-wrap:anywhere}
.city-arrival-feature>span:first-child{padding:4px 6px;border:1px solid #a5b4a2;background:#f2efde;font-size:.7em;letter-spacing:.08em;white-space:nowrap}
@media(max-width:700px){.city-arrival-links{flex:1 1 100%;justify-content:space-between;gap:4px 12px}.city-arrival-links a{gap:6px}}

/* v20: the feature opens as the same illustrated volume seen on the home shelf.
   The fossil-inspired image is atmospheric artwork; its caption stays visible.
   Only the cover changes here. The time exhibits keep their existing scale. */
.page-wrap.earth-page{border-top-color:#5f2630;background:#f7f3eb}
.earth-opening.earth-library-cover,
.earth-front-main.earth-library-cover{
 display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0;
 padding:0;border:0;background:#390c12;color:#fbf5e9;box-shadow:none;
 overflow:visible;
}
.earth-opening.earth-library-cover>div:first-child,
.earth-library-cover .earth-front-copy{
 padding:clamp(30px,4vw,55px) clamp(24px,3.8vw,51px);
 align-self:center;min-width:0;max-width:none;
}
.earth-library-cover .earth-kicker{color:#dfc6a5;font-size:.72rem;letter-spacing:.12em}
.earth-opening.earth-library-cover h1{
 max-width:13ch;margin:17px 0 25px;color:#fff9ee;
 font:600 clamp(2.3rem,4.1vw,3.65rem)/1.28 var(--serif);letter-spacing:.035em;
}
.earth-opening.earth-library-cover h1 .earth-title-phrase{display:block}
.earth-opening.earth-library-cover h1>wbr{display:none}
.earth-library-cover .earth-opening-lead{color:#f5e8d5;font-size:1.2rem;font-weight:500;line-height:1.8}
.earth-library-cover .earth-opening-dek,
.earth-library-cover .earth-front-dek{color:#e6d5c4;font-size:1rem;line-height:1.95;max-width:38em}
.earth-library-cover .earth-opening-actions{gap:10px 24px;margin-top:26px}
.earth-library-cover .earth-primary-link{
 background:#f7efe1;color:#4c1820!important;border:1px solid #f7efe1;
 padding:14px 18px;font-size:.925rem;font-weight:650;
}
.earth-library-cover .earth-primary-link:hover{background:#fffaf1;border-color:#fffaf1}
.earth-library-cover .earth-text-link,
.earth-library-cover .earth-front-ways a{color:#f6e9d4;font-weight:500}
.earth-library-cover :is(a,button):focus-visible{outline:3px solid #f1cf8d;outline-offset:5px}
.earth-frontispiece{
 position:relative;display:flex;flex-direction:column;justify-content:flex-end;
 min-width:0;min-height:350px;align-self:stretch;margin:0;background:#2a080e;
}
.earth-frontispiece picture{position:absolute;inset:0;display:block}
.earth-frontispiece img{display:block;width:100%;height:100%;object-fit:cover;object-position:70% 50%}
.earth-frontispiece figcaption{
 position:relative;z-index:1;margin:0;padding:26px 22px 16px;color:#f4e5d3;
 background:linear-gradient(transparent,rgba(31,5,9,.88));
 font:.72rem/1.7 var(--sans);letter-spacing:.015em;overflow-wrap:break-word;
}
.earth-library-cover .earth-opening-notes,
.earth-library-cover .earth-front-foot{
 grid-column:1/-1;margin:0;padding:19px clamp(24px,3.8vw,51px);
 border-top:1px solid #78434b;background:#310a11;color:#e9d8bf;
 font-size:.8rem;font-weight:400;line-height:1.8;
}
.earth-library-cover .earth-opening-notes{gap:10px 28px}
.earth-library-cover .earth-opening-notes li::before{border-color:#c3a16c}
.earth-library-cover .earth-front-foot>span{color:#f4e7d3;font-weight:500}
.earth-front-main.earth-library-cover{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr)}
.earth-front-main.earth-library-cover h2{
 max-width:15ch;margin:0 0 20px;padding:0;
 font:600 clamp(1.8rem,3vw,2.6rem)/1.4 var(--serif);letter-spacing:.025em;
}
.earth-front-main.earth-library-cover h2 a{color:#fff9ee}
.earth-front-main.earth-library-cover .earth-frontispiece{min-height:290px}
.earth-front-main.earth-library-cover .earth-front-copy{padding:30px}
.earth-index-entry .earth-front-main.earth-library-cover{padding:0}
html[lang="en"] .earth-library-cover :is(h1,h2){font-family:Georgia,"Times New Roman",serif;letter-spacing:-.018em;line-height:1.15}
html[lang="en"] .earth-opening.earth-library-cover h1{max-width:15ch}
@media(max-width:1100px){
 .earth-front .earth-front-main.earth-library-cover{grid-template-columns:minmax(0,1fr)}
 .earth-front .earth-front-main.earth-library-cover .earth-frontispiece{min-height:260px}
}
@media(max-width:800px){
 .earth-opening.earth-library-cover,
 .earth-front-main.earth-library-cover{grid-template-columns:minmax(0,1fr)}
 .earth-opening.earth-library-cover>div:first-child{padding:32px 27px}
 .earth-opening.earth-library-cover h1{font-size:clamp(2.15rem,6.5vw,3.1rem);max-width:none}
 .earth-opening.earth-library-cover .earth-opening-lead{font-size:1.12rem}
 .earth-opening.earth-library-cover .earth-opening-dek{font-size:1rem}
 .earth-library-cover .earth-frontispiece{min-height:0!important}
 .earth-library-cover .earth-frontispiece picture{position:relative;inset:auto}
 .earth-library-cover .earth-frontispiece img{height:auto;aspect-ratio:3/2}
 .earth-library-cover .earth-frontispiece figcaption{padding:12px 20px;background:#2a080e}
 .earth-library-cover .earth-opening-notes,
 .earth-library-cover .earth-front-foot{padding:17px 27px}
 .earth-library-cover .earth-opening-notes{gap:8px 20px;font-size:.76rem}
}
@media(max-width:390px){
 .earth-opening.earth-library-cover>div:first-child,
 .earth-front-main.earth-library-cover .earth-front-copy{padding:28px 21px}
 .earth-library-cover .earth-opening-notes,
 .earth-library-cover .earth-front-foot{padding:17px 21px}
 .earth-opening.earth-library-cover h1{letter-spacing:.01em}
 .earth-library-cover .earth-opening-actions{align-items:flex-start;flex-direction:column}
 .earth-library-cover .earth-primary-link{max-width:100%;gap:12px;font-size:.875rem}
}
@media(forced-colors:active){
 .earth-opening.earth-library-cover,.earth-front-main.earth-library-cover,
 .earth-library-cover .earth-opening-notes,.earth-library-cover .earth-front-foot,
 .earth-frontispiece figcaption{background:Canvas;color:CanvasText;border-color:CanvasText}
 .earth-library-cover :is(h1,h2,a,p,li,span){color:CanvasText}
 .earth-library-cover .earth-primary-link{background:ButtonFace;color:ButtonText!important;border-color:ButtonText}
 .earth-library-cover :focus-visible{outline-color:Highlight}
}