/* Exhibition pass: one navigation rhythm, legible labels, and restrained instruments. */
:root{--paper:#ebe5d9;--muted:#b1c2bc}
.app-shell{background-image:radial-gradient(circle at 27% 34%,#1b3b49 0,transparent 34%),radial-gradient(circle at 78% 5%,#172f36 0,transparent 31%)}
.masthead{height:76px}.brand{letter-spacing:.15em}.site-nav{display:flex;align-items:center;gap:0!important}.site-nav a{display:inline-block!important;padding:12px 14px;border-bottom:1px solid transparent;text-decoration:none;color:#bbc9c3;font-size:11px;font-weight:600;letter-spacing:.03em;white-space:nowrap}.site-nav a:hover,.site-nav a[aria-current=page]{color:var(--text);border-bottom-color:var(--copper)}.masthead-right{gap:20px}.masthead-right .text-button{font-size:11px;color:#bbc9c3}
.eyebrow{letter-spacing:.18em}.intro-line{padding-top:19px}.coverage-pill{border:1px solid #6c9e9566;padding:8px 11px;text-decoration:none}.coverage-pill:hover{background:#28434b;text-decoration:none}
.main-grid{grid-template-columns:minmax(0,1.06fr) minmax(440px,.94fr);gap:2.6vw}.explorer{padding-top:20px}.explorer-heading h1{font-size:clamp(40px,3.8vw,62px);margin-top:12px}.hero-meta>strong{font-size:35px}.globe-wrap{aspect-ratio:1.5;margin:-22px auto -22px}.globe-wrap::before{background-size:57px 51px;opacity:.075}.orb-halo{border-color:#b3ded545;box-shadow:0 0 0 15px #95cfb908,0 0 85px 26px #4392a723,inset 0 0 65px #76bdc621}.globe-caption,.atlas-globe-status,.atlas-globe-help{color:#c0d0c9;text-shadow:0 1px 8px #06131b}.globe-caption.top,.atlas-globe-status{border-left:2px solid #d3a27d;padding-left:9px}.place-choice{padding-top:14px;padding-bottom:14px}.place-choice.active{background:#d6ab8219}.time-panel{padding-top:18px}
.story,.atlas-paper,.culture-paper{background-image:linear-gradient(135deg,#fff9ed55,transparent 38%);box-shadow:0 18px 60px #0004,0 0 0 1px #fff3 inset}.story{padding-top:29px;min-height:700px}.story h2{font-size:clamp(48px,4.2vw,67px);margin:33px 0 16px}.lead{margin-bottom:30px}.topic-tabs{gap:24px}.topic-tabs button{font-size:12px;letter-spacing:.015em}.story-card{padding-top:17px}.story-card h3{margin-bottom:18px}.comparison{gap:21px}.comparison p{font-size:13px;line-height:1.57}.source-links{font-size:12px}.source-links a,.atlas-card .sources a,.culture-sources>a{text-decoration-thickness:1px;text-underline-offset:3px}
.atlas-intro{align-items:end;padding:22px 0 17px}.atlas-intro h1{font-size:clamp(45px,4.2vw,62px);margin:8px 0 7px}.atlas-intro p{font-size:15px;line-height:1.4;max-width:640px}.atlas-intro-year{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.atlas-count{align-self:center}.atlas-grid{grid-template-columns:minmax(0,1.02fr) minmax(445px,.98fr);gap:2.6vw}.atlas-time{margin:0;padding:14px 4px 12px;border-top:1px solid #bad2cd4a;border-bottom:1px solid #bad2cd4a}.atlas-time .year-display{font-size:43px;margin-top:2px}.atlas-time .time-status{font-size:9px}.atlas-time input[type=range]{margin:9px 0 0}.atlas-ticks button{font-size:9px}.atlas-exact{margin-top:8px}.atlas-exact input,.atlas-exact select,.atlas-exact button{height:32px}.atlas-time .time-note{font-size:10px;margin-top:8px}.atlas-globe-wrap{aspect-ratio:1.35;max-width:570px;margin:-30px auto -32px;background:radial-gradient(circle at 50% 49%,#3e738052 0,transparent 56%)}.atlas-globe-wrap::before{border-color:#b3ded545;box-shadow:0 0 0 15px #95cfb908,0 0 85px 26px #4392a723}.atlas-globe-status{top:14%}.atlas-globe-help{bottom:15%;max-width:150px;line-height:1.5}.atlas-paper{padding-top:28px}.atlas-paper h2{font-size:clamp(44px,3.6vw,57px);margin:20px 0 8px}.atlas-paper-lead{margin-bottom:15px}.atlas-selects{padding:14px 0}.atlas-card p{font-size:13px;line-height:1.56}.atlas-card .sources{font-size:12px}.atlas-card h3{font-size:27px}.atlas-evidence-note{font-size:12px}
.culture-intro{padding-top:22px}.culture-intro h1{font-size:clamp(42px,3.7vw,55px)}.culture-picker{gap:7px}.culture-picker button{background:transparent;border-color:#78908c65;border-radius:100px;padding:9px 13px;font-size:11px}.culture-picker button:hover,.culture-picker button[aria-pressed=true]{border-color:var(--copper);background:#d7ab8021}.culture-picker button[aria-pressed=true]{box-shadow:inset 0 0 0 1px #d7ab8066}.culture-layout{gap:2.6vw}.culture-events{scrollbar-width:thin}.culture-events button{grid-template-columns:82px 1fr;padding:12px 10px}.culture-events button[aria-current=true]{border-left:3px solid var(--copper);padding-left:7px;background:#304b51}.culture-events button strong{font-size:16px}.culture-paper{padding-top:28px}.culture-paper h2{margin:9px 0 16px}.culture-body{font-size:18px}.culture-caution{font-size:13px}.culture-sources{font-size:13px}
@media(max-width:1100px){.main-grid,.atlas-grid{grid-template-columns:1fr}.globe-wrap{max-width:580px}.atlas-intro{align-items:center}.atlas-paper{min-height:0}.story{min-height:0}}
@media(max-width:600px){.masthead{height:68px}.brand{font-size:8px;gap:8px}.brand-mark{font-size:25px}.site-nav a{font-size:10px;padding:10px 7px}.site-nav a[href$="about.html"]{display:none!important}.masthead-right{gap:0}.masthead-right .text-button{display:none}.intro-line{padding-top:15px}.coverage-pill{padding:6px 8px}.explorer-heading h1{font-size:44px}.globe-wrap{aspect-ratio:1.04;margin:-3px -18px -8px}.globe-caption.top{top:13%}.globe-caption.bottom{bottom:11%}.story{padding-top:23px}.story h2{margin:25px 0 15px;font-size:48px}.lead{margin-bottom:23px}.comparison{grid-template-columns:1fr}.comparison p{font-size:14px}.atlas-intro{padding:21px 0 15px}.atlas-intro h1{font-size:45px}.atlas-intro p{font-size:14px}.atlas-count{margin-top:13px;padding-top:8px}.atlas-count strong{font-size:37px}.atlas-time{padding:14px 1px}.atlas-time .year-display{font-size:38px}.atlas-ticks{gap:12px}.atlas-ticks button{font-size:9px}.atlas-exact{gap:7px}.atlas-exact>span{width:100%;margin:0}.atlas-globe-wrap{margin:-20px -18px -21px;aspect-ratio:1.1}.atlas-globe-status{top:12%}.atlas-globe-help{bottom:11%;max-width:130px}.atlas-paper{margin-top:0}.atlas-paper h2{font-size:45px}.atlas-cards{grid-template-columns:1fr}.atlas-card p{font-size:14px}.culture-picker button{font-size:10px}.culture-layout{gap:18px}.culture-events button strong{font-size:16px}.culture-paper h2{font-size:43px}}
.formation-particles{position:absolute;z-index:1;pointer-events:none}.formation-particles[hidden]{display:none}.formation-active #globe,.formation-active #atlasGlobe{opacity:0}.formation-active.formation-reveal #globe,.formation-active.formation-reveal #atlasGlobe{opacity:1;transition:opacity 1.25s ease}.formation-control{position:absolute;z-index:3;left:5%;bottom:15%;padding:7px 9px;border:1px solid #8aaba666;background:#102a35cc;color:#cbdad0;font-size:9px;font-weight:700;letter-spacing:.1em;text-transform:uppercase}.formation-control:hover{border-color:var(--copper);color:#fff}.atlas-globe-wrap .formation-control{left:3%;bottom:14%}.atlas-globe-status,.atlas-globe-help{z-index:2}@media(max-width:600px){.globe-wrap .formation-control{left:5%;bottom:8%;font-size:8px}.atlas-globe-wrap .formation-control{left:3%;bottom:9%;font-size:8px}}@media(prefers-reduced-motion:reduce){.formation-active #globe,.formation-active #atlasGlobe{opacity:1}.formation-active.formation-reveal #globe,.formation-active.formation-reveal #atlasGlobe{transition:none}}
.app-shell.atlas-shell{background:linear-gradient(180deg,#091923 0%,#0a1e29 48%,#091923 100%)}
.atlas-intro{padding:34px 0 31px;gap:48px}.atlas-intro h1{font-size:clamp(43px,4vw,58px);line-height:1.02;margin:12px 0 14px}.atlas-intro p{max-width:590px;font-size:16px;line-height:1.54}.atlas-count{align-self:end;margin-bottom:8px}
.atlas-time{padding:24px 4px 27px}.atlas-time .year-display{margin-top:10px}.atlas-time input[type=range]{margin:21px 0 7px}.atlas-ticks{margin-top:6px}.atlas-exact{margin-top:20px;gap:12px}.atlas-exact input,.atlas-exact select,.atlas-exact button{height:39px}.atlas-time .time-note{margin-top:19px;line-height:1.55}
.atlas-globe-wrap{margin:6px auto 11px;background:radial-gradient(circle at 50% 50%,#35607024 0,transparent 60%)}.atlas-globe-wrap::before{border-color:#a4cad026;box-shadow:0 0 0 12px #95cfb908}.atlas-map-note a,.globe-source a{color:#c9ded3;text-underline-offset:3px}.atlas-map-note a:hover,.globe-source a:hover{color:var(--copper)}
.globe-source{color:var(--muted);font-size:9px;font-weight:700;letter-spacing:.12em;line-height:1.5;text-align:center;margin:-13px 0 17px}.orb-halo{box-shadow:0 0 0 13px #95cfb908,0 0 48px 15px #4392a716,inset 0 0 35px #76bdc613}
@media(max-width:1100px){.atlas-intro{padding:30px 0 35px}.atlas-grid{gap:30px}.atlas-globe-wrap{margin:15px auto 14px}}
@media(max-width:600px){.atlas-intro{padding:25px 0 28px}.atlas-intro h1{font-size:clamp(40px,11vw,48px)}.atlas-intro p{font-size:14px;line-height:1.52}.atlas-time{padding:21px 1px 24px}.atlas-exact{gap:10px}.atlas-globe-wrap{margin:11px -18px 8px}.globe-source{font-size:8px;margin:-5px 0 14px}}

/* The photographic Earth needs a dark, quiet stage rather than a broad teal haze. */
.app-shell {
  background:
    radial-gradient(ellipse 38% 32% at 26% 43%, rgba(43, 92, 111, .27), transparent 100%),
    linear-gradient(135deg, #0b1d29 0%, #081620 58%, #0a1b26 100%);
}
.app-shell.atlas-shell {
  background:
    radial-gradient(ellipse 42% 30% at 27% 48%, rgba(43, 92, 111, .23), transparent 100%),
    linear-gradient(160deg, #0a1c27 0%, #07151f 55%, #0a1b25 100%);
}
.globe-wrap::before { opacity: .035; }
.orb-halo {
  border-color: rgba(166, 217, 194, .19);
  box-shadow: 0 0 0 12px rgba(149, 207, 185, .025), 0 0 38px 12px rgba(56, 116, 139, .13);
}
.atlas-globe-wrap {
  background: radial-gradient(circle at 50% 50%, rgba(38, 85, 105, .13), transparent 63%);
}
.atlas-globe-wrap::before {
  border-color: rgba(164, 202, 208, .18);
  box-shadow: 0 0 0 12px rgba(149, 207, 185, .025);
}