/* Approved optical materials. Layout and runtime behaviour stay in their modules. */
:root {
  --eg-surface: var(--g-sheen), rgb(var(--g-tint) / var(--g-opacity));
  --eg-light-surface: var(--g-sheen), rgb(var(--g-tint) / calc(var(--g-opacity) - .14));
  --eg-reading-surface: linear-gradient(rgb(var(--g-tint) / .30), rgb(var(--g-tint) / .30)), var(--g-sheen), var(--g-reading);
  --eg-selected-surface: linear-gradient(var(--g-selection), var(--g-selection)), var(--g-reading);
  --eg-border: rgb(var(--g-light) / var(--g-edge));
  --eg-control: linear-gradient(var(--g-reflection-angle), rgb(var(--g-light) / calc(var(--g-reflect) * .65)), rgb(var(--g-tint) / .24));
  --eg-elevation: var(--g-shadow), var(--g-glow);
  --eg-inner: var(--g-inner);
  --eg-radius: var(--g-radius);
  --eg-muted: var(--g-muted);
  --eg-ink: var(--g-ink);
  --cosmos-title: var(--g-ink);
  --cosmos-text: var(--g-ink);
  --cosmos-muted: var(--g-muted);
  --cosmos-accent: var(--g-accent);
  --cosmos-accent-hover: color-mix(in srgb, var(--g-accent) 85%, white);
  --cosmos-line: rgb(var(--g-light) / .16);
  --cosmos-line-strong: rgb(var(--g-light) / .34);
  --cosmos-wash: rgb(var(--g-light) / .07);
  --cosmos-selected: var(--g-selection);
  --cosmos-reading: var(--eg-reading-surface);
  --cosmos-bar: var(--g-sheen), var(--g-reading);
}
html[data-glass-era] { color-scheme: dark; scrollbar-color: rgb(var(--g-light) / .38) transparent; }
html[data-glass-era] ::selection { background: var(--g-selection); color: var(--g-ink); }
html[data-glass-era] :is(button,a,input,select,summary,textarea):focus-visible {outline:2px solid var(--g-accent);outline-offset:4px;}
html[data-glass-era] :is(input,textarea,select) {accent-color:var(--g-accent);}

/* Root surfaces keep one optical layer; their children use lighter reflections. */
html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos :is(.cu-panel,#exploreDock,.hm-place-panel),
html[data-glass-era] body :is(.ch-dialog,.dg-index-sheet,#contentDialog) {
  background:var(--eg-surface)!important;
  border:var(--g-edge-width) solid var(--eg-border)!important;
  border-radius:var(--g-radius)!important;
  box-shadow:var(--eg-inner),var(--eg-elevation)!important;
  backdrop-filter:blur(var(--g-blur)) saturate(var(--g-saturate));
  -webkit-backdrop-filter:blur(var(--g-blur)) saturate(var(--g-saturate));
  color:var(--g-ink);
  scrollbar-color:rgb(var(--g-light) / .36) transparent;
  overscroll-behavior:contain;
}
html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos .cu-detail,
html[data-glass-era] body #contentDialog { background:var(--eg-reading-surface)!important; }
html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos .cu-panel :is(.cu-detail-header,.cu-result-header,.lg-header,.cu-detail-footer),
html[data-glass-era] body :is(.ch-dialog>header,.dg-index-head,.dialog-top) {
  color:var(--g-ink);border-color:rgb(var(--g-light) / .15);
  background:var(--g-sheen),var(--g-reading)!important;
}
html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos .cu-panel :is(input,select,textarea),
html[data-glass-era] body #exploreDock :is(input,select),
html[data-glass-era] body #contentDialog :is(input,select,textarea) {
  background:rgb(var(--g-tint) / .6);color:var(--g-ink);border:1px solid var(--eg-border);border-radius:18px;
}
html[data-glass-era] body :is(.ch-dialog,#contentDialog)::backdrop {background:#02070cb0;backdrop-filter:blur(12px);}
html[data-glass-era] body :is(.ch-dialog,#contentDialog) :is(p,small) {color:var(--g-muted);}

/* Header navigation, icon tools and the archive's persistent controls. */
html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos :is(.cu-controls,.cu-view-switch,.cu-mode,.cu-search-wrap,.cu-journey-dock),
html[data-glass-era] body :is(.ch-header nav,.ch-era-navigation,.ch-node-pager,.ch-media-control>button,.dg-index-toggle) {
  border:var(--g-edge-width) solid var(--eg-border)!important;
  border-radius:999px!important;
  background:var(--eg-light-surface)!important;
  box-shadow:var(--eg-inner),0 10px 32px #0004,var(--g-glow)!important;
  backdrop-filter:blur(var(--g-blur)) saturate(var(--g-saturate));
  -webkit-backdrop-filter:blur(var(--g-blur)) saturate(var(--g-saturate));
  color:var(--g-ink);
}
html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos :is(.cu-panel,#exploreDock) button,
html[data-glass-era] body :is(.ch-dialog,.dg-index-sheet,#contentDialog) :is(button,.icon-button),
html[data-glass-era] body :is(.cosmic-primary,.header) > button:not(.brand) {
  border-color:rgb(var(--g-light) / .22)!important;
  color:var(--g-ink)!important;
  border-radius:18px;
}
html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos :is(.cu-controls,.cu-view-switch,.cu-mode) button {
  background:transparent!important;color:var(--g-ink)!important;border-radius:999px;
}
html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos :is(.cu-panel-close,.explore-close),
html[data-glass-era] body :is(.dg-index-close,.close-dialog,.ch-dialog>header>button) {
  background:var(--eg-control)!important;border:1px solid var(--eg-border)!important;border-radius:999px!important;
  box-shadow:inset 0 1px 0 rgb(var(--g-light) / .15),0 4px 14px #0002;
  min-width:44px;min-height:44px;color:var(--g-ink)!important;
}
html[data-glass-era] body :is(.ch-dialog>header>button) {padding:8px 18px;}
html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos :is(.cu-panel,#exploreDock) button:is([aria-pressed=true],[aria-selected=true],.is-active,.active) {
  background: var(--eg-selected-surface)!important;border-color:rgb(var(--g-light) / .46)!important;color:var(--g-accent)!important;
}
html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos :is(.cu-hover,.cu-empty,.cu-era-guide),
html[data-glass-era] body :is(.cu-toast,.toast) {background:var(--eg-reading-surface)!important;color:var(--g-ink)!important;border-color:var(--eg-border);border-radius:22px;box-shadow:var(--eg-inner),var(--eg-elevation);}

/* The opening keeps its sky and content stars; navigation floats above it. */
html[data-glass-era] .curatorial-home {--ch-ink:var(--g-ink);--ch-red:var(--g-accent);color:var(--g-ink);}
html[data-glass-era] .curatorial-home .ch-header nav {gap:4px;padding:4px 8px;}
html[data-glass-era] .curatorial-home .ch-header nav>* {padding:0 17px;min-height:40px;border-radius:999px;color:var(--g-ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC",sans-serif;font-size:12px;letter-spacing:.04em;}
html[data-glass-era] .curatorial-home .ch-era-navigation {padding:6px 10px;gap:8px;}
html[data-glass-era] .curatorial-home .ch-era-tabs {gap:4px;scrollbar-width:none;}
html[data-glass-era] .curatorial-home .ch-era-tabs button {border:1px solid transparent;border-radius:999px;color:var(--g-muted);padding:8px 16px;min-height:42px;font:12px/1.7 -apple-system,BlinkMacSystemFont,"PingFang SC",sans-serif;letter-spacing:.04em;}
html[data-glass-era] .curatorial-home .ch-era-tabs button[aria-current=true] {background: var(--eg-selected-surface);border-color:var(--eg-border);box-shadow:inset 0 1px 0 rgb(var(--g-light) / .13);color:var(--g-ink);}
html[data-glass-era] .curatorial-home :is(.ch-era-scroll,.ch-all-eras) {min-height:44px;border-radius:999px;padding:8px 10px;color:var(--g-ink);}
html[data-glass-era] .curatorial-home .ch-start {border:1px solid rgb(var(--g-light) / .38);background:var(--eg-control);box-shadow:var(--eg-inner),0 5px 22px #0003;border-radius:999px;padding:11px 22px;color:var(--g-ink);min-height:44px;font:12px/1.7 -apple-system,BlinkMacSystemFont,"PingFang SC",sans-serif;}
html[data-glass-era] .curatorial-home .ch-media-control>button {padding:8px 16px;min-height:40px;color:var(--g-ink);}
html[data-glass-era] .curatorial-home .ch-node-pager {padding:5px 10px;gap:8px;}
html[data-glass-era] .curatorial-home .ch-node-pager button {border:0;border-radius:999px;min-width:34px;min-height:34px;color:var(--g-ink);}
html[data-glass-era] .curatorial-home .ch-content-node {color:var(--g-ink);}
html[data-glass-era] .curatorial-home .ch-content-node:focus-visible,
html[data-glass-era] .curatorial-home .ch-content-node:hover {border-radius:18px;background:var(--eg-light-surface);box-shadow:var(--eg-inner);}
html[data-glass-era] .curatorial-home :is(.ch-hero-copy,.ch-node-heading) {color:var(--g-ink);text-shadow:0 2px 20px #000b;}
html[data-glass-era] .curatorial-home .ch-hero-copy:before {content:"";position:absolute;inset:-38px -30px -20px -36px;z-index:-1;pointer-events:none;background:radial-gradient(ellipse at 20% 45%,rgb(var(--g-tint) / .55),rgb(var(--g-tint) / .19) 59%,transparent 77%);}
html[data-glass-era] .curatorial-home :is(.ch-era-coordinate,.ch-hero-description,.ch-media-control [role=status]) {color:var(--g-muted);}
html[data-glass-era] .curatorial-home .ch-quiet-clues {display:flex;flex-direction:column;gap:14px;}
html[data-glass-era] .curatorial-home .ch-clue-link,
html[data-glass-era] .curatorial-home .ch-module-grid>a,
html[data-glass-era] .curatorial-home .ch-era-list>button {
  background:var(--eg-control);border:1px solid var(--eg-border);border-radius:calc(var(--g-radius) - 7px);padding:20px 22px;box-shadow:var(--eg-inner),0 8px 24px #0002;
}
html[data-glass-era] .curatorial-home :is(.ch-module-grid,.ch-era-list) {gap:14px;}
html[data-glass-era] .curatorial-home :is(.ch-module-grid strong,.ch-era-list strong) {color:var(--g-ink);}
html[data-glass-era] .curatorial-home :is(.ch-module-grid a>span,.ch-era-list button>span>span) {color:var(--g-muted);}
html[data-glass-era] .curatorial-home .ch-era-list [aria-current=true] {background: var(--eg-selected-surface);border-color:rgb(var(--g-light) / .48);}
html[data-glass-era] .curatorial-home .ch-dialog {width:min(1000px,calc(100% - 40px));max-height:calc(100dvh - 40px);height:auto;}
html[data-glass-era] .curatorial-home .ch-dialog>header {border-radius:calc(var(--g-radius) - 1px) calc(var(--g-radius) - 1px) 0 0;}

/* The long table of contents has a single scroll boundary and a fixed close. */
html[data-glass-era] body .dg-index {--ix-ink:var(--g-ink);--ix-muted:var(--g-muted);--ix-line:rgb(var(--g-light) / .16);--ix-paper:var(--g-reading);}
html[data-glass-era] body .dg-index-sheet {display:flex;flex-direction:column;max-height:calc(100dvh - 40px);overflow:hidden;}
html[data-glass-era] body .dg-index-head {flex:none;}
html[data-glass-era] body .dg-index-lede {flex:none;color:var(--g-muted);}
html[data-glass-era] body .dg-index-list {flex:1;min-height:0;overflow:auto;overscroll-behavior:contain;padding-bottom:22px;scroll-padding-block:12px 22px;}
html[data-glass-era] body .dg-index-list li button {border-radius:calc(var(--g-radius) - 10px);padding-inline:14px;}
html[data-glass-era] body .dg-index-list :is(strong,b) {color:var(--g-ink);}
html[data-glass-era] body .dg-index-list small {color:var(--g-muted);}
html[data-glass-era] body .dg-index {--ix-bg:var(--g-reading);--ix-fg:var(--g-ink);--ix-fg-2:var(--g-ink);--ix-fg-3:var(--g-muted);--ix-accent:var(--g-accent);--ix-rule:rgb(var(--g-light) / .15);padding:20px;align-items:center;background:#02070cb0;backdrop-filter:blur(10px);}
html[data-glass-era] body .dg-index-sheet {height:auto;max-height:100%;}
html[data-glass-era] #stellar-wave#stellar-wave h2[tabindex="-1"]:focus {outline:none!important;}
html[data-glass-era] body .dg-index-list:focus-visible {outline:1px solid var(--g-accent);outline-offset:-2px;border-radius:20px;}
html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos .cu-panel :is(.cu-result-header,.lg-header) {background:transparent!important;}
html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos .cu-map-themes {background:transparent!important;border:0!important;box-shadow:none;}
html[data-glass-era] body.historical-map-active #civilization-deep-cosmos#civilization-deep-cosmos .cu-intro {display:none!important;}
html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos:has(.cu-panel:not([hidden])) .dg-cover-copy {opacity:0;pointer-events:none;}
html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos .cu-results[data-card-style="glass-demo"] {
  top:108px;right:40px;left:auto;bottom:auto;width:440px;max-width:calc(100vw - 48px);height:auto;max-height:calc(100dvh - 144px);padding:28px;overflow:hidden;
}
html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos .cu-results[data-card-style="glass-demo"]:not([hidden]) {display:flex;flex-direction:column;}
html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos .cu-results[data-card-style="glass-demo"] .cu-result-header {position:static;flex:none;padding:0 0 20px;gap:20px;}
html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos .cu-results[data-card-style="glass-demo"] .cu-result-list {min-height:0;overflow:auto;padding:16px 2px 4px;overscroll-behavior:contain;scroll-padding-block:8px;}
html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos .cu-list-empty {text-align:center;padding:24px 0;color:var(--g-muted);}
html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos .cu-saved-empty-symbol {display:grid;place-items:center;width:68px;height:68px;margin:0 auto 22px;border:1px solid var(--eg-border);border-radius:24px;background:var(--eg-control);box-shadow:var(--eg-inner);}
html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos .cu-saved-empty-symbol svg {width:34px;height:34px;}
html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos :is(.dg-cover-enter,.dg-cover-map,.cu-continue) {background:var(--eg-control)!important;border:1px solid var(--eg-border)!important;border-radius:999px!important;color:var(--g-ink)!important;box-shadow:var(--eg-inner),0 6px 22px #0003;padding:12px 22px!important;min-height:44px;}
html[data-glass-era] body #exploreDock {--dg-paper:var(--g-reading);--dg-ink:var(--g-ink);}
html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos #exploreDock .explore-heading {background:var(--eg-reading-surface);}

@media(hover:hover) and (pointer:fine) {
  html[data-glass-era] .curatorial-home :is(.ch-module-grid>a,.ch-era-list>button,.ch-clue-link):hover {background:var(--eg-selected-surface);border-color:rgb(var(--g-light) / .46);box-shadow:var(--eg-inner),0 12px 32px #0004;}
  html[data-glass-era] .curatorial-home :is(.ch-header nav>*,.ch-era-tabs button,.ch-node-pager button,.ch-era-scroll,.ch-all-eras):hover,
  html[data-glass-era] body .dg-index-list button:hover {background: var(--eg-selected-surface);color:var(--g-ink);}
}
@media(max-width:760px) {
  html[data-glass-era][data-site-runtime="archive"] body.single-universe #civilization-deep-cosmos#civilization-deep-cosmos :is(.cu-learning,.cu-map,.cu-journeys) {left:12px;right:12px;width:auto;max-width:none;top:84px;bottom:16px;max-height:calc(100dvh - 100px);padding:22px;}
  html[data-glass-era] .curatorial-home .ch-header nav {gap:0;padding:3px;}
  html[data-glass-era] .curatorial-home .ch-header nav>* {padding-inline:12px;min-height:38px;font-size:11px;}
  html[data-glass-era] .curatorial-home .ch-era-navigation {left:16px;right:16px;padding:4px 6px;gap:2px;}
  html[data-glass-era] .curatorial-home .ch-era-tabs button {font-size:11px;padding:7px 12px;min-height:40px;}
  html[data-glass-era] .curatorial-home :is(.ch-era-scroll,.ch-all-eras) {font-size:9px;padding:5px 7px;}
  html[data-glass-era] .curatorial-home .ch-dialog {width:calc(100% - 20px);max-height:calc(100dvh - 24px);margin:auto;}
  html[data-glass-era] .curatorial-home .ch-dialog-body {padding:24px 20px 30px;}
  html[data-glass-era] .curatorial-home .ch-module-grid {grid-template-columns:1fr;}
  html[data-glass-era] .curatorial-home .ch-dialog>header {padding:10px 18px;}
  html[data-glass-era] .curatorial-home .ch-module-grid>a {padding:18px 20px;}
  html[data-glass-era] body .dg-index-sheet {max-height:calc(100dvh - 24px);}
  html[data-glass-era] body .dg-index {padding:12px;}
  html[data-glass-era] body #civilization-deep-cosmos#civilization-deep-cosmos .cu-results[data-card-style="glass-demo"] {top:88px;left:16px;right:16px;width:auto;max-width:none;max-height:calc(100dvh - 112px);padding:22px;}
}
@media(max-width:360px) {
  html[data-glass-era] .curatorial-home .ch-header nav>* {padding-inline:9px;}
  html[data-glass-era] .curatorial-home .ch-header {left:20px;right:20px;gap:8px;}
  html[data-glass-era] #stellar-wave#stellar-wave .sw-top-controls {gap:0;padding:3px;}
  html[data-glass-era] #stellar-wave#stellar-wave .sw-top-controls>button {padding-inline:8px;font-size:10px;min-height:36px;}
}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))) {
  :root {--eg-surface:var(--g-sheen),var(--g-reading);--eg-light-surface:var(--g-sheen),var(--g-reading);}
}
@media(prefers-reduced-transparency:reduce) {
  :root {--eg-surface:var(--g-reading);--eg-light-surface:var(--g-reading);--eg-reading-surface:var(--g-reading);}
  html[data-glass-era] body :is(.cu-panel,.ch-dialog,.dg-index-sheet,#contentDialog) {backdrop-filter:none;-webkit-backdrop-filter:none;}
}
@media(prefers-reduced-motion:reduce) {
  html[data-glass-era] :is(.ch-dialog,.dg-index-sheet,.cu-panel) {animation:none;transition:none;}
}