@font-face{font-family:Hanken;src:url('./assets/hanken-latin.woff2') format('woff2');font-weight:100 900;font-display:swap}
@font-face{font-family:Hanken;src:url('./assets/hanken-latin-ext.woff2') format('woff2');font-weight:100 900;font-display:swap;unicode-range:U+0100-024F}
:root{--ink:#080808;--surface:#141414;--paper:#f3f3f3;--muted:#b4b4b4;--line:#3d3d3d;--gutter:clamp(22px,4.2vw,76px);color-scheme:dark;font-family:Hanken,Arial,sans-serif;font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:72px}body{margin:0;background:var(--ink);color:var(--paper);-webkit-font-smoothing:antialiased}h1,h2,h3,p{margin-top:0}a{color:inherit;text-decoration:none}button,input{font:inherit}button{color:inherit;background:transparent;border:0;cursor:pointer;min-height:44px}button,a,input,summary{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid currentColor;outline-offset:6px}button:disabled{opacity:.4;cursor:default}[hidden]{display:none!important}::selection{background:#fff;color:#080808}.skip{position:fixed;top:-100px;left:24px;z-index:80;background:#fff;color:#080808;padding:16px}.skip:focus{top:12px}.site-header{position:fixed;inset:0 0 auto;z-index:40;height:72px;padding:0 var(--gutter);display:flex;justify-content:space-between;align-items:center;background:#080808;border-bottom:1px solid #ffffff1c}.wordmark{font-size:24px;font-weight:800;letter-spacing:.12em;line-height:1}.site-header nav{display:flex;align-items:center;gap:35px;font-size:14px;font-weight:500}.site-header nav>a{padding:14px 0}.site-header nav>a:hover{text-decoration:underline;text-underline-offset:5px}.site-header button{padding:10px 0}.site-header button span{font-size:22px;margin-left:12px;vertical-align:-1px}
/* Each act is its own space. Scroll stays native; no fixed full-page film. */
.expedition-scene{position:relative;scroll-margin-top:-72px;min-height:190svh;background:#080808;isolation:isolate}.hero-entry{min-height:160svh}.hero-crystal{min-height:210svh}.hero-water{min-height:180svh}.hero-mantle{min-height:200svh}.hero-core{min-height:190svh}.scene-sticky{height:100svh;min-height:620px;position:sticky;top:0;overflow:hidden}.film-stage,.scene-vignette{position:absolute;inset:0}.film-stage{z-index:0;background:#080808;overflow:hidden}.film-stage canvas,.scene-poster{position:absolute;inset:0;width:100%;height:100%;display:block;object-fit:cover}.scene-poster{object-position:var(--poster-position,50% 50%)}.scene-vignette{z-index:1;pointer-events:none;background:linear-gradient(180deg,#08080855 0,transparent 30%,#0808080a 55%,#080808bd 100%)}.hero-entry .scene-vignette{background:linear-gradient(180deg,#08080822 20%,#08080800 32%,#08080850 58%,#080808df 100%)}.hero-crystal .scene-vignette{background:linear-gradient(90deg,transparent 30%,#08080822 48%,#080808aa 100%),linear-gradient(0deg,#080808a8,transparent 32%)}.hero-water .scene-vignette{background:linear-gradient(180deg,#08080880,transparent 50%,#08080895)}.hero-core .scene-vignette{background:linear-gradient(180deg,#08080840,transparent 48%,#080808a8)}
.hero-copy{position:absolute;z-index:2;opacity:var(--copy-opacity,1);pointer-events:none;will-change:opacity}.hero-copy a{pointer-events:auto}.scene-kicker{font-size:13px;letter-spacing:.04em;margin-bottom:24px;font-weight:500}.hero-copy h1,.hero-copy h2{font-weight:750;line-height:.96;letter-spacing:-.065em;margin-bottom:25px}.hero-copy h1{font-size:clamp(80px,10.7vw,178px)}.hero-copy h2{font-size:clamp(60px,7.4vw,122px)}.hero-copy>p:not(.scene-kicker){font-size:17px;line-height:1.55;font-weight:450}.entry-copy{left:var(--gutter);right:var(--gutter);bottom:105px}.entry-copy h1{max-width:1120px;margin-bottom:30px}.entry-bottom{display:flex;justify-content:space-between;align-items:flex-end;gap:36px;max-width:1120px}.entry-bottom p{font-size:17px;line-height:1.55;margin:0}.primary-action{display:inline-flex;justify-content:space-between;align-items:center;gap:42px;min-height:54px;padding:16px 22px;background:#f3f3f3;color:#080808;font-size:14px;font-weight:600;white-space:nowrap}.primary-action span{font-size:23px;line-height:1}.primary-action:hover{background:#d5d5d5}.scene-margin-note{position:absolute;left:var(--gutter);bottom:27px;z-index:2;margin:0;font-size:10px;font-weight:500;letter-spacing:.13em;color:#b4b4b4;max-width:55%}.crystal-copy{right:var(--gutter);top:22%;width:36%;max-width:550px}.crystal-copy h2{font-size:clamp(64px,8.1vw,134px)}.crystal-copy>p:last-child{max-width:330px}.water-copy{left:var(--gutter);top:17%}.water-copy h2{font-size:clamp(56px,5.1vw,88px);font-weight:550;letter-spacing:-.05em}.water-observation{position:absolute;z-index:2;right:var(--gutter);bottom:125px;font-size:16px;line-height:1.6;max-width:310px;opacity:var(--copy-opacity,1)}.mantle-copy{left:var(--gutter);right:var(--gutter);bottom:125px}.mantle-copy h2{font-size:clamp(60px,7.3vw,122px)}.core-copy{left:var(--gutter);right:var(--gutter);top:24%;text-align:center}.core-copy h2{font-size:clamp(76px,10vw,170px)}.core-copy .scene-kicker{margin-bottom:28px}.core-copy>p:last-child{max-width:390px;margin:30px auto 0}
/* White field notes give reading its own moment, after the film. */
.science-stop{position:relative;z-index:3;color:#151515;background:#ededed;display:grid;grid-template-columns:1fr 1fr;gap:clamp(50px,9vw,150px);padding:110px var(--gutter) 120px;min-height:560px;align-items:start;color-scheme:light}.science-stop::selection,.earth-lab::selection{background:#151515;color:white}.section-mark{display:block;font-size:11px;font-weight:600;letter-spacing:.11em;margin-bottom:40px}.stop-heading h2{font-size:clamp(38px,4.2vw,66px);font-weight:550;letter-spacing:-.055em;line-height:1.05;margin-bottom:0}.stop-body{padding-top:51px;max-width:590px}.stop-body>p{font-size:18px;line-height:1.65;max-width:52ch;margin-bottom:22px}.stop-body>p.muted{font-size:15px;color:#555;line-height:1.7}.science-stop details{margin-top:32px;border-top:1px solid #b9b9b9;border-bottom:1px solid #b9b9b9}.science-stop summary{cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:28px;padding:22px 0;font-size:15px;font-weight:550;line-height:1.45}.science-stop summary::-webkit-details-marker{display:none}.science-stop summary span{font-size:24px;font-weight:400;flex-shrink:0;transition:transform .2s}.science-stop details[open] summary span{transform:rotate(45deg)}.fact-content{padding:0 0 24px}.fact-content p{font-size:16px;line-height:1.7;color:#343434;margin-bottom:19px;max-width:54ch}.source{display:block;width:fit-content;font-size:12px;line-height:1.6;text-decoration:underline;text-underline-offset:4px;margin-top:10px}.source:hover{text-decoration-thickness:2px}.text-action{display:inline-flex;align-items:center;gap:24px;min-height:48px;font-size:14px;font-weight:550;margin-top:24px;border-bottom:1px solid currentColor}.text-action span{font-size:21px}.threshold-stop{padding-top:125px;padding-bottom:125px}.final-stop{padding-bottom:140px}
/* Existing scientific models retain their accessible controls and data hooks. */
.earth-lab{position:relative;z-index:3;background:#e5e5e5;color:#151515;color-scheme:light;padding:100px var(--gutter) 130px;border-top:1px solid #c5c5c5}.section-label{display:flex;justify-content:space-between;gap:30px;font-size:11px;letter-spacing:.11em;font-weight:600;margin-bottom:42px}.section-label>span:empty{display:none}.earth-lab h2{font-size:clamp(45px,5.3vw,86px);font-weight:550;line-height:1.02;letter-spacing:-.06em;margin-bottom:26px}.lab-intro{font-size:17px;line-height:1.65;max-width:620px;margin-bottom:40px}.lab-tabs{display:flex;gap:34px;border-bottom:1px solid #adadad;margin-bottom:42px}.lab-tabs button{padding:17px 0;font-size:15px;font-weight:550;color:#555;border-bottom:3px solid transparent}.lab-tabs button[aria-pressed=true]{border-bottom-color:#151515;color:#151515}.lab-layout{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(320px,1fr);gap:clamp(40px,7vw,110px);align-items:center}.lab-visual{min-width:0}#earth-model{height:450px;position:relative;touch-action:pan-y;cursor:grab}#earth-model canvas{position:absolute;inset:0;width:100%;height:100%}.lab-fallback{width:100%;height:100%;display:block}#earth-model.loaded .lab-fallback{visibility:hidden}.lab-visual>p{font-size:12px;line-height:1.6;color:#4b4b4b;max-width:520px}.lab-rotation{display:flex;align-items:center;gap:20px;margin-top:25px;font-size:13px}.lab-rotation input{flex:1;min-width:0;accent-color:#151515}.layer-buttons{display:grid;grid-template-columns:1fr 1fr;gap:0 22px}.layer-buttons button{text-align:left;border-bottom:1px solid #aaa;padding:15px 0;color:#4a4a4a;font-size:14px}.layer-buttons button[aria-pressed=true]{color:#111;border-bottom:2px solid #111;font-weight:700}.layer-buttons i{display:inline-block;width:9px;height:9px;background:var(--layer);border:1px solid #555;margin-right:9px}.lab-readout{min-height:290px;padding-top:38px}.lab-readout .eyebrow{font-size:11px;letter-spacing:.07em;line-height:1.5;font-weight:550;color:#555;margin-bottom:16px}.lab-readout h3{font-size:36px;font-weight:550;letter-spacing:-.035em;line-height:1.1;margin:0 0 20px}.lab-readout p:not(.eyebrow){font-size:16px;line-height:1.7;color:#242424}.lab-readout #lab-detail{font-size:14px;color:#505050}.source-note{font-size:12px;line-height:1.65;color:#4a4a4a}.source-note a{text-decoration:underline;text-underline-offset:3px}#fault-controls>label{font-size:15px;font-weight:550;line-height:1.5}#fault-stress{display:block;width:100%;accent-color:#151515;margin-top:28px}.stress-scale{display:flex;justify-content:space-between;gap:25px;font-size:12px;margin:12px 0 24px;color:#555}.text-link{padding:8px 0;font-size:14px;min-height:44px;border-bottom:1px solid currentColor}
.closing{padding:125px var(--gutter) 140px;background:#080808;position:relative;z-index:3}.closing .section-mark{color:#b4b4b4}.closing h2{font-size:clamp(64px,10vw,165px);font-weight:750;letter-spacing:-.065em;line-height:.97;margin-bottom:55px}.site-footer{display:flex;align-items:center;justify-content:space-between;gap:40px;padding:36px var(--gutter) 115px;border-top:1px solid #333;background:#080808;position:relative;z-index:3}.site-footer .wordmark{font-size:19px}.site-footer p{font-size:13px;color:#b4b4b4;margin:0}.site-footer>a:last-child{font-size:13px}
/* Layer scale: stage 0, stage copy 2, reading 3, controls 30, header 40, dialog 60, notices 70. */
.expedition-controls{position:fixed;z-index:30;bottom:20px;right:var(--gutter);display:flex;gap:0;align-items:center;background:#080808;color:#f3f3f3;border:1px solid #454545;padding:0 4px 0 16px;max-width:calc(100% - 40px)}.expedition-controls>span{font-size:11px;color:#b4b4b4;max-width:190px;margin-right:20px;white-space:nowrap}.expedition-controls button{font-size:12px;padding:13px 14px;white-space:nowrap}.expedition-controls button+button{border-left:1px solid #454545}.expedition-controls button[aria-pressed=true]{background:#f3f3f3;color:#080808}body.is-reading .expedition-controls{visibility:hidden;pointer-events:none}.notice{position:fixed;z-index:70;right:var(--gutter);bottom:84px;max-width:360px;background:#f3f3f3;color:#080808;padding:14px 18px;font-size:14px;line-height:1.4;opacity:0;pointer-events:none;transform:translateY(8px);transition:opacity .2s,transform .2s}.notice.visible{opacity:1;transform:none}
dialog{width:min(680px,calc(100% - 36px));max-height:calc(100svh - 44px);overflow:auto;padding:50px;background:#101010;color:#f3f3f3;border:1px solid #494949;z-index:60}dialog::backdrop{background:#000c}.dialog-close{position:absolute;right:18px;top:12px;font-size:32px;font-weight:400;padding:0 10px}.dialog-close:hover{color:#aaa}dialog .section-mark{color:#aaa;margin-bottom:30px}dialog h2{font-size:76px;letter-spacing:-.06em;line-height:1;font-weight:750;margin-bottom:32px}dialog nav{display:flex;flex-direction:column}dialog nav a{display:flex;align-items:center;gap:25px;font-size:20px;padding:20px 0;border-top:1px solid #373737;line-height:1.25}dialog nav a span{font-size:11px;color:#a5a5a5;font-variant-numeric:tabular-nums}dialog nav a i{font-size:20px;font-style:normal;margin-left:auto}dialog nav a:hover{color:#bdbdbd}dialog nav .map-lab{margin-top:12px;font-size:15px;color:#bbb}
@media(min-width:1700px){.science-stop,.earth-lab{padding-left:max(var(--gutter),calc((100vw - 1550px)/2));padding-right:max(var(--gutter),calc((100vw - 1550px)/2))}}
@media(max-height:780px) and (min-width:761px){.hero-copy h1{font-size:clamp(76px,8.8vw,140px)}.entry-copy{bottom:100px}.entry-copy h1{margin-bottom:20px}.scene-sticky{min-height:520px}.crystal-copy{top:22%}.hero-copy h2{font-size:clamp(54px,6.6vw,110px)}.core-copy{top:24%}.core-copy h2{font-size:clamp(70px,8vw,140px)}}
@media(max-width:1000px){.crystal-copy{width:44%}.science-stop{gap:45px}.lab-layout{gap:35px;grid-template-columns:minmax(0,1.1fr) minmax(280px,1fr)}#earth-model{height:360px}.expedition-controls>span{display:none}.expedition-controls{padding-left:4px}.entry-bottom{max-width:none}.entry-copy h1{font-size:11.8vw}}
@media(max-width:760px){:root{--gutter:22px}.expedition-scene{scroll-margin-top:-64px}html{scroll-padding-top:64px}.site-header{height:64px}.wordmark{font-size:21px}.site-header nav{gap:22px;font-size:12px}.site-header button span{font-size:19px;margin-left:7px}.scene-sticky{min-height:580px}.hero-entry{min-height:155svh}.hero-crystal{min-height:195svh}.hero-water{min-height:165svh}.hero-mantle{min-height:185svh}.hero-core{min-height:180svh}.scene-kicker{font-size:12px;margin-bottom:20px}.entry-copy{bottom:120px}.entry-copy h1{font-size:clamp(59px,14.2vw,108px);letter-spacing:-.067em;line-height:1;margin-bottom:28px}.entry-bottom{display:block}.entry-bottom p{font-size:16px;margin-bottom:26px}.primary-action{font-size:13px;min-height:50px;padding:14px 18px;gap:30px}.scene-margin-note{bottom:76px;font-size:9px;max-width:calc(100% - 44px);letter-spacing:.09em}.crystal-copy{top:17%;right:var(--gutter);left:var(--gutter);width:auto;text-align:right}.crystal-copy h2{font-size:clamp(65px,16vw,105px);margin-bottom:20px}.crystal-copy>p:last-child{font-size:16px;max-width:250px;margin-left:auto}.hero-crystal .scene-vignette{background:linear-gradient(180deg,#080808b8,#08080866 43%,transparent 65%,#08080888)}.water-copy{top:19%}.water-copy h2{font-size:58px}.water-observation{font-size:14px;left:var(--gutter);right:auto;bottom:120px;max-width:260px}.mantle-copy{bottom:130px}.mantle-copy h2{font-size:clamp(50px,12.9vw,86px);letter-spacing:-.06em;line-height:1}.mantle-copy>p:last-child{font-size:16px}.core-copy{top:28%;left:12px;right:12px}.core-copy h2{font-size:clamp(69px,17.8vw,125px)}.core-copy>p:last-child{font-size:15px;max-width:300px;margin-top:25px}.hero-core .scene-margin-note{font-size:8px;letter-spacing:.08em}.science-stop{grid-template-columns:1fr;gap:30px;padding:72px var(--gutter) 85px;min-height:0}.section-mark{font-size:10px;margin-bottom:28px}.stop-heading h2{font-size:clamp(37px,9.6vw,61px)}.stop-body{padding-top:0;max-width:none}.stop-body>p{font-size:17px;line-height:1.65}.stop-body>p.muted{font-size:14px}.science-stop summary{font-size:14px;padding:19px 0;gap:16px}.science-stop details{margin-top:25px}.fact-content p{font-size:15px}.source{font-size:12px}.earth-lab{padding:75px var(--gutter) 90px}.section-label{font-size:10px;margin-bottom:28px}.earth-lab h2{font-size:clamp(45px,11.4vw,72px)}.lab-intro{font-size:16px;margin-bottom:26px}.lab-tabs{gap:28px;margin-bottom:24px}.lab-tabs button{font-size:13px}.lab-layout{grid-template-columns:1fr;gap:35px}#earth-model{height:325px}.lab-rotation{font-size:12px;gap:13px}.lab-readout{padding-top:28px;min-height:260px}.lab-readout h3{font-size:33px}.layer-buttons button{font-size:13px}.lab-readout p:not(.eyebrow){font-size:16px}.lab-readout #lab-detail{font-size:14px}.closing{padding:85px var(--gutter) 100px}.closing h2{font-size:clamp(56px,14vw,95px);margin-bottom:38px}.site-footer{flex-wrap:wrap;gap:28px;padding:30px var(--gutter) 112px}.site-footer p{order:3;flex-basis:100%;font-size:12px;max-width:280px}.expedition-controls{bottom:14px;right:14px;max-width:calc(100% - 28px)}.expedition-controls button{font-size:11px;min-height:44px;padding:12px}.notice{right:14px;left:14px;bottom:77px;max-width:none;font-size:13px}dialog{padding:43px 26px 30px}dialog h2{font-size:61px}dialog nav a{font-size:17px;gap:18px;padding:19px 0}dialog nav .map-lab{font-size:14px}.dialog-close{right:10px;top:8px}}
@media(max-width:370px){.site-header nav{gap:14px}.site-header nav>a{font-size:11px}.wordmark{font-size:19px}.entry-copy h1{font-size:13.7vw}.entry-copy{bottom:118px}.scene-sticky{min-height:560px}.core-copy h2{font-size:17vw}.hero-copy>p:not(.scene-kicker){font-size:14px}.lab-tabs{gap:20px}.lab-tabs button{font-size:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}html:not(.js) *,html:not(.js) *::before,html:not(.js) *::after{animation:none!important;transition:none!important}}
body.reduced{scroll-behavior:auto}body.reduced *,body.reduced *::before,body.reduced *::after{animation:none!important;transition:none!important}body.reduced .expedition-scene{min-height:100svh!important}body.reduced .scene-sticky{position:relative}body.reduced .hero-copy,body.reduced .water-observation{opacity:1!important}
html:not(.js) .expedition-controls,html:not(.js) #map-toggle,html:not(.js) .lab-tabs,html:not(.js) .lab-rotation,html:not(.js) .layer-buttons{display:none}html:not(.js) .expedition-scene{min-height:100svh}html:not(.js) .scene-sticky{position:relative}