@import url('./assets/fonts/fonts.css');
:root{--bg:#080b0e;--panel:#10171b;--ink:#edece4;--muted:#a1adae;--line:#2c393b;--mint:#a8d6b3;--amber:#edbf76;--display:'Instrument Serif',Georgia,serif;--body:'IBM Plex Sans',sans-serif;--mono:'IBM Plex Mono',monospace;color-scheme:dark;scroll-behavior:smooth}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 var(--body)}a{color:inherit;text-underline-offset:5px}a:hover{color:var(--mint)}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--mint);outline-offset:5px}img,video{max-width:100%;display:block}img{height:auto}figure{margin:0}h1,h2,h3,p{margin:0}h1,h2{font-family:var(--display);font-weight:400;line-height:1.02;letter-spacing:-.035em}h2{font-size:clamp(45px,5vw,76px)}h3{font-size:22px;font-weight:500;line-height:1.3;letter-spacing:-.02em}p+p{margin-top:18px}em{font-weight:400;color:inherit}.wrap{width:min(1400px,calc(100% - 112px));margin:auto}.narrow{max-width:760px}.muted{color:var(--muted)}.mono,.eyebrow,.fig-meta,.caption-label{font-family:var(--mono);font-size:11px;letter-spacing:.11em;text-transform:uppercase}.eyebrow{color:var(--mint);display:block;margin-bottom:24px}.skip{position:fixed;top:-80px;left:20px;z-index:100;background:var(--ink);color:var(--bg);padding:12px}.skip:focus{top:10px}.nav{height:88px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:28px}.brand{display:flex;align-items:center;gap:13px;text-decoration:none;font-size:16px;font-weight:500;letter-spacing:-.02em;white-space:nowrap}.mark{width:26px;height:28px;display:flex;gap:3px;align-items:center}.mark i{display:block;width:3px;background:var(--mint)}.mark i:nth-child(1){height:7px}.mark i:nth-child(2){height:12px}.mark i:nth-child(3){height:18px}.mark i:nth-child(4){height:24px}.mark i:nth-child(5){height:28px;background:var(--amber)}.nav-links{display:flex;align-items:center;gap:34px;font-size:13px}.nav-links a{text-decoration:none}.nav-cta{border:1px solid var(--line);padding:9px 16px;border-radius:2px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:28px;text-decoration:none;background:var(--mint);color:#122019;border:1px solid var(--mint);padding:15px 23px;font-size:14px;font-weight:500;transition:background .2s,transform .2s}.btn:hover{background:#c5ebcd;color:#122019;transform:translateY(-2px)}.btn.secondary{background:transparent;border-color:var(--line);color:var(--ink)}.btn.secondary:hover{border-color:var(--mint);color:var(--mint)}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.hero{padding-top:66px}.hero-top{display:grid;grid-template-columns:1.3fr 1fr;gap:40px;align-items:end;margin-bottom:42px}.hero h1{font-size:clamp(76px,8.2vw,132px);line-height:.93;max-width:840px}.hero-copy{max-width:360px;justify-self:end;padding-bottom:5px}.hero-copy p{color:#c2cccc;font-size:17px;line-height:1.65}.hero-film{position:relative;background:#000;isolation:isolate;overflow:hidden;border:1px solid #30393c}.hero-film video{width:100%;aspect-ratio:16/7.35;object-fit:cover;object-position:center 54%}.film-top{position:absolute;top:22px;left:25px;display:flex;align-items:center;gap:10px;font:10px var(--mono);letter-spacing:.12em;background:#080b0ecc;padding:7px 10px;z-index:2}.dot{height:6px;width:6px;border-radius:50%;background:var(--mint)}.film-bottom{position:absolute;bottom:0;left:0;right:0;display:flex;align-items:center;justify-content:space-between;padding:15px 24px;background:linear-gradient(transparent,#080b0ed9);font:11px var(--mono);color:#cdd5d2}.film-control{background:#0b1118cc;border:1px solid #617374;color:var(--ink);font:10px var(--mono);padding:9px 12px}.spectrum{height:2px;background:linear-gradient(90deg,#321743,#4076ea,#37cbb7,#b0ed5b,#f9ca38,#f35c23,#fff5e0)}.stats{display:grid;grid-template-columns:repeat(4,1fr);border-bottom:1px solid var(--line);padding:28px 0}.stats-note{font-size:12px;color:var(--muted);margin-top:14px;max-width:780px}.stat{padding-left:32px;border-left:1px solid var(--line)}.stat:first-child{padding-left:0;border:0}.stat strong{font-family:var(--display);font-size:40px;font-weight:400;line-height:1.2;letter-spacing:-.02em}.stat span{display:block;margin-top:6px;color:var(--muted);font-size:10px;letter-spacing:.1em;text-transform:uppercase;font-family:var(--mono)}.section{padding:110px 0;border-bottom:1px solid var(--line);scroll-margin-top:30px}.section-head{display:grid;grid-template-columns:1.15fr 1fr;gap:80px;align-items:end;margin-bottom:48px}.section-head p{max-width:460px;color:var(--muted)}.section-head .eyebrow{margin-bottom:20px}.chapter{margin-right:14px;opacity:.65}.reading-frame{position:relative;padding-right:40px;padding-bottom:42px}.reading-frame img{width:100%;background:#000}.axis-y{position:absolute;right:4px;top:12%;bottom:22%;writing-mode:vertical-rl;font:10px var(--mono);color:var(--mint);letter-spacing:.1em}.axis-x{position:absolute;bottom:10px;left:0;right:40px;border-top:1px solid #62716d;padding-top:9px;display:flex;justify-content:space-between;font:10px var(--mono);letter-spacing:.1em;color:var(--mint)}.pin{position:absolute;width:25px;height:25px;border-radius:50%;border:1px solid #ddeee5;background:#12231fe8;box-shadow:0 0 0 5px #080b0e80;display:grid;place-items:center;color:#fff;font:12px var(--mono)}.pin.p1{left:13%;top:17%}.pin.p2{left:53%;top:67%}.pin.p3{left:88%;top:61%}.reading-notes{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;margin-top:24px}.number{display:inline-block;color:var(--mint);font:12px var(--mono);margin-bottom:14px}.reading-notes p{font-size:15px;color:var(--muted);margin-top:12px}.legend-panel{display:grid;grid-template-columns:1fr 1.2fr;gap:70px;background:var(--panel);padding:32px 38px;margin-top:45px}.legend-panel h3{font-size:20px}.legend-panel p{font-size:14px;color:var(--muted);margin-top:10px}.legend-row{display:grid;grid-template-columns:120px 1fr;gap:16px;align-items:center;margin:7px 0;font:11px var(--mono)}.legend-row canvas{width:100%;height:14px}.legend-ticks{display:flex;justify-content:space-between;margin:14px 0 0 136px;font:10px var(--mono);color:var(--muted)}.caption{font-size:12px;color:var(--muted);line-height:1.7;margin-top:14px}.caption-label{color:var(--mint);margin-right:14px;font-size:10px}.chapter-banner{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:38px}.chapter-banner p{font:12px var(--mono);color:var(--muted)}.epoch-tool{border:1px solid var(--line);padding:30px 38px;background:#0c1115}.tool-head{display:flex;align-items:center;justify-content:space-between;gap:20px}.tool-head output{font:23px var(--mono);color:var(--mint)}.tool-head label{font:11px var(--mono);color:var(--muted)}.axis-demo{display:block;width:100%;height:auto;margin:25px 0 4px;overflow:visible}.axis-demo text{font-family:var(--mono);fill:var(--muted);font-size:11px}.epoch-range{width:100%;accent-color:var(--mint);cursor:ew-resize;margin:14px 0}.tool-controls{display:flex;justify-content:space-between;align-items:center;gap:14px}.tool-controls button,.era-actions button{border:1px solid var(--line);background:transparent;color:var(--ink);padding:8px 13px;font:11px var(--mono)}.tool-controls span{font-size:12px;color:var(--muted)}.split{display:grid;grid-template-columns:1.2fr 1fr;gap:60px;align-items:center;margin-top:45px}.split p{color:var(--muted);font-size:15px;margin-top:15px}.clip-box{border:1px solid var(--line);background:black;position:relative}.clip-box video{width:100%}.clip-box .film-control{position:absolute;bottom:14px;right:14px}.era-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:28px 14px}.era-card a{display:block;overflow:hidden;border:1px solid var(--line);background:black}.era-card img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s}.era-card a:hover img{transform:scale(1.06)}.era-card figcaption{padding-top:12px}.era-card .era-year{font-family:var(--display);font-size:28px}.era-card .era-block{color:var(--mint);font:10px var(--mono);display:block;margin-top:2px}.era-card p{color:var(--muted);font-size:12px;margin-top:8px}.gallery-note{margin-top:26px;display:flex;justify-content:space-between;color:var(--muted);font:11px var(--mono)}.whale-layout{display:grid;grid-template-columns:1.1fr 1fr;gap:50px}.whale-main h3{font-family:var(--display);font-size:42px;margin-top:26px}.whale-main p{font-size:15px;color:var(--muted);margin-top:14px}.crop-stack{display:grid;gap:24px}.crop-stack figure{border-bottom:1px solid var(--line);padding-bottom:17px}.crop-stack img{width:100%;height:94px;object-fit:cover;background:black;image-rendering:pixelated}.crop-stack figcaption{font-size:12px;color:var(--muted);margin-top:9px;display:flex;justify-content:space-between;gap:20px}.crop-stack strong{color:var(--ink);font-weight:500;white-space:nowrap}.crop-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:25px;margin-top:38px}.crop-grid figure{background:#0e1418;padding:16px}.crop-grid img{width:100%;height:180px;object-fit:cover;image-rendering:pixelated}.crop-grid figcaption{font-size:13px;line-height:1.65;color:var(--muted);margin-top:18px}.crop-grid strong{display:block;color:var(--ink);margin-bottom:5px}.explorer-shot{border:1px solid var(--line);width:100%;background:#000}.walkthrough{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:38px}.walkthrough img{width:100%;height:170px;object-fit:cover;border:1px solid var(--line)}.walkthrough h3{margin-top:20px;font-size:19px}.walkthrough p{font-size:14px;color:var(--muted);margin-top:10px}.keyboard{display:flex;align-items:center;justify-content:space-between;gap:22px;padding:24px 0;border-block:1px solid var(--line);margin-top:38px;flex-wrap:wrap;font-size:12px;color:var(--muted)}kbd{font:11px var(--mono);border:1px solid #445456;border-bottom-width:2px;padding:4px 7px;color:var(--ink);border-radius:3px;display:inline-block;margin-right:5px;background:#152024}.tech-link{display:grid;grid-template-columns:1fr auto;align-items:center;gap:50px;margin-top:70px;background:var(--mint);padding:44px 46px;color:#14231e;text-decoration:none}.tech-link:hover{background:#c2e6c6;color:#14231e}.tech-link h3{font:46px var(--display);letter-spacing:-.03em}.tech-link p{font-size:15px;max-width:780px;margin-top:12px}.tech-link .arrow{font:50px var(--display)}.comparison{position:relative;aspect-ratio:16/9;background:black;overflow:hidden;border:1px solid var(--line);--split:50%;user-select:none}.comparison img{width:100%;height:100%;object-fit:fill;position:absolute;inset:0}.comparison .after{clip-path:inset(0 0 0 var(--split))}.comparison .divider{position:absolute;top:0;bottom:0;left:var(--split);width:2px;transform:translateX(-50%);background:white;pointer-events:none;z-index:2}.comparison .divider:after{content:'↔';position:absolute;top:50%;left:1px;transform:translate(-50%,-50%);width:44px;height:44px;border-radius:50%;background:#e8eee7;color:#14231e;display:grid;place-items:center;font:24px var(--body);box-shadow:0 0 0 4px #080b0e66}.comparison:has(input:focus-visible) .divider:after{outline:3px solid var(--mint);outline-offset:5px}.comparison:has(input:hover) .divider:after{background:#fff}.comparison input{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:ew-resize;touch-action:pan-y;z-index:3}.compare-label{position:absolute;top:16px;background:#080b0ecf;padding:6px 11px;font:10px var(--mono);z-index:1}.compare-label.left{left:16px}.compare-label.right{right:16px}.credit{display:grid;grid-template-columns:220px 1fr;gap:36px;margin-top:40px;align-items:center}.credit img{border:1px solid var(--line);width:100%}.credit p{font-size:14px;color:var(--muted);max-width:780px}.guide-note{padding:38px 0;display:grid;grid-template-columns:220px 1fr;gap:36px;color:var(--muted)}.guide-note .mono{padding-top:4px}.guide-note p{font-size:14px;max-width:780px}.footer{padding:32px 0;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:24px;font-size:12px;color:var(--muted)}.footer-links{display:flex;gap:25px}.lightbox{border:1px solid #536765;padding:16px;background:#070b0e;color:var(--ink);max-width:96vw;max-height:94vh;width:max-content}.lightbox::backdrop{background:#000e}.lightbox img{max-height:80vh;object-fit:contain}.lightbox-bar{display:flex;justify-content:space-between;gap:28px;margin-bottom:12px;font:12px var(--mono)}.lightbox button{border:1px solid var(--line);padding:5px 12px;background:var(--panel);color:var(--ink)}.lightbox a{font-size:12px;display:inline-block;margin-top:8px}.reveal{opacity:1}.js .reveal.pending{opacity:0;transform:translateY(16px)}.js .reveal{transition:opacity .6s,transform .6s}.progress{position:fixed;top:0;left:0;width:0;height:2px;z-index:20;background:var(--mint)}
/* Engineering reference */
.reference-hero{padding:65px 0 58px;border-bottom:1px solid var(--line)}.reference-hero h1{font-size:clamp(62px,7vw,110px);max-width:1000px}.reference-hero .lead{max-width:720px;color:var(--muted);font-size:19px;margin-top:28px}.reference-meta{margin-top:30px;font:11px var(--mono);color:var(--mint)}.reference-layout{display:grid;grid-template-columns:205px minmax(0,1fr);gap:65px;padding-top:60px}.toc{position:sticky;top:30px;align-self:start;font:12px/1.5 var(--mono);max-height:90vh;overflow:auto}.toc p{color:var(--mint);font-size:10px;letter-spacing:.1em;margin-bottom:16px}.toc a{display:block;text-decoration:none;padding:7px 0;color:var(--muted)}.toc a.active,.toc a:hover{color:var(--ink)}.reference-body{min-width:0}.reference-body section{padding-bottom:58px;margin-bottom:54px;border-bottom:1px solid var(--line);scroll-margin-top:30px}.reference-body h2{font-size:48px;margin-bottom:28px}.reference-body h3{margin:28px 0 14px}.reference-body p{color:#b2bebd;font-size:16px;max-width:900px}.reference-body ul,.reference-body ol{padding-left:22px;color:#b2bebd;font-size:15px}.reference-body li{margin-bottom:10px}.reference-body .source{font:11px/1.8 var(--mono);margin-top:17px;color:var(--muted)}.table-wrap{overflow-x:auto;margin:24px 0;max-width:100%}table{border-collapse:collapse;width:100%;font-size:13px;text-align:left}th{font:10px var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--mint);padding:13px 14px;background:var(--panel);vertical-align:bottom}td{padding:14px;vertical-align:top;border-bottom:1px solid var(--line);color:#b3c0bd;line-height:1.6}td:first-child{color:var(--ink)}code{font-family:var(--mono);font-size:.82em;color:#bcdbca;overflow-wrap:anywhere}pre{padding:23px 26px;border:1px solid var(--line);background:#0e151a;overflow:auto;line-height:1.75;margin:23px 0;font-size:14px}pre code{white-space:pre;overflow-wrap:normal}.callout{border-left:2px solid var(--mint);background:#111b19;padding:22px 26px;margin:25px 0}.callout p{font-size:14px}.diagram{border:1px solid var(--line);padding:20px;background:#0c1115;margin:26px 0}.diagram svg{width:100%;height:auto;display:block}.diagram text{font-family:var(--mono)}.ref-photo{margin:26px 0}.ref-photo img{border:1px solid var(--line);width:100%}.config-search{width:100%;background:#111b20;border:1px solid var(--line);color:var(--ink);padding:13px 15px;margin-top:15px;font-size:14px}.config-table{min-width:700px}.config-table code{font-size:11px}.tag{display:inline-block;font:10px var(--mono);padding:3px 7px;background:#1d2a24;color:var(--mint)}.api-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.api-grid article{border:1px solid var(--line);padding:20px}.api-grid h3{margin:0 0 12px;font:13px var(--mono);color:var(--mint)}.api-grid p{font-size:13px}
@media(min-width:1800px){.wrap{width:min(1600px,calc(100% - 160px))}.hero h1{font-size:146px}.hero-copy{max-width:440px}.hero-copy p{font-size:19px}.hero-film video{aspect-ratio:16/7}}
@media(max-width:1100px){.wrap{width:calc(100% - 64px)}.nav-links{gap:20px}.hero-top{grid-template-columns:1.3fr 1fr}.hero h1{font-size:90px}.section-head{gap:40px}.era-grid{grid-template-columns:repeat(5,1fr)}.legend-panel{gap:30px}.reference-layout{gap:35px;grid-template-columns:170px minmax(0,1fr)}.stat strong{font-size:32px}}
@media(max-width:800px){body{font-size:16px}.wrap{width:calc(100% - 40px)}.nav{height:75px}.nav-links{gap:16px}.nav-links .optional{display:none}.brand{font-size:14px}.nav-links{font-size:12px}.hero{padding-top:45px}.hero-top{grid-template-columns:1fr;gap:25px}.hero h1{font-size:clamp(72px,13vw,108px)}.hero-copy{justify-self:start;max-width:540px}.hero-film video{aspect-ratio:16/9}.film-top{top:10px;left:10px;font-size:8px}.film-bottom{font-size:9px;padding:10px}.film-bottom .optional{display:none}.stats{grid-template-columns:1fr 1fr;gap:25px}.stat:nth-child(3){padding-left:0;border:0}.section{padding:70px 0}.section-head{grid-template-columns:1fr;gap:25px;margin-bottom:35px}.section-head p{max-width:600px}.reading-notes{gap:23px}.legend-panel{grid-template-columns:1fr;gap:20px;padding:26px}.epoch-tool{padding:24px 18px}.tool-head output{font-size:18px}.split,.whale-layout{grid-template-columns:1fr;gap:30px}.era-grid{grid-template-columns:repeat(2,1fr);gap:25px 15px}.crop-grid{grid-template-columns:1fr 1fr}.crop-grid figure:last-child{grid-column:1/-1}.walkthrough{grid-template-columns:1fr;gap:35px}.walkthrough img{height:auto;max-height:320px;object-fit:contain}.walkthrough p{max-width:500px}.keyboard{justify-content:flex-start}.tech-link{padding:30px;gap:20px}.tech-link h3{font-size:36px}.credit,.guide-note{grid-template-columns:1fr}.guide-note{gap:12px}.credit img{max-width:240px}.footer{align-items:flex-start}.reference-layout{display:block;padding-top:30px}.toc{position:static;display:flex;flex-wrap:wrap;gap:4px 18px;margin-bottom:40px;max-height:none}.toc p{width:100%;margin-bottom:3px}.reference-body h2{font-size:41px}.reference-hero{padding-top:45px}.api-grid{grid-template-columns:1fr}.reference-body p{font-size:15px}}
@media(max-width:480px){.hero h1{font-size:clamp(60px,17vw,72px)}.nav-links .nav-cta{display:none}.nav-links{gap:12px}.wrap{width:calc(100% - 32px)}.reading-notes{grid-template-columns:1fr}.reading-notes h3{display:inline;font-size:20px}.number{margin:0 14px 0 0}.reading-notes p{margin-top:8px}.hero .actions{gap:8px}.btn{padding:13px 16px;font-size:13px;gap:18px}.stat strong{font-size:30px}.stats{gap:20px}.stat{padding-left:20px}.tool-head{align-items:start;flex-direction:column;gap:8px}.tool-controls{align-items:start;flex-direction:column}.crop-grid{grid-template-columns:1fr}.crop-grid figure:last-child{grid-column:auto}.crop-stack figcaption{flex-direction:column;gap:5px}.footer{flex-direction:column}.legend-panel{padding:22px 18px}.legend-row{grid-template-columns:100px 1fr;font-size:9px;gap:10px}.legend-ticks{margin-left:110px;font-size:9px}.gallery-note{flex-direction:column;gap:10px}.credit{gap:20px}.reference-body pre{padding:18px;font-size:12px}}
@media(prefers-reduced-motion:reduce){:root{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}.js .reveal.pending{opacity:1;transform:none}}

.walkthrough article:nth-child(2) img{object-fit:contain;background:#101318}
.walkthrough .number{margin-right:6px}