@font-face{font-family:Inter;src:url('../assets/fonts/Inter.ttf');font-display:swap}
@font-face{font-family:Instrument;src:url('../assets/fonts/InstrumentSerif.ttf');font-display:swap}
:root{--canvas:#050f08;--surface:#0b1b12;--ink:#ede8da;--muted:#b0bcae;--faint:#8b9b8c;--line:#dce8d02c;--accent:#2dd4bf;--serif:'Iowan Old Style',Georgia,serif;--display:'Bodoni 72 Display','Bodoni 72',Didot,serif;--label:ui-monospace,'SFMono-Regular',Menlo,monospace;--ease:cubic-bezier(.16,1,.3,1);--scene-progress:0}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:95px}body{margin:0;background:var(--canvas);color:var(--ink);font:15px/1.6 Inter,system-ui,sans-serif;overflow-x:clip}body[data-brand=world]{--canvas:#05060a;--surface:#0b111b;--ink:#f3efe6;--muted:#b4bdc9;--faint:#8e9bad;--line:#c2d1e42d;--accent:#7fb4e6;--serif:Instrument,Georgia,serif;--display:Instrument,Georgia,serif;--label:Inter,system-ui,sans-serif}button,a,input{touch-action:manipulation}button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:6px}button:disabled{cursor:default;opacity:.5}button:active,.primary:active{transform:scale(.98)}[hidden]{display:none!important}sup{font:400 .35em/0 Inter,sans-serif;vertical-align:super;margin-left:.08em;letter-spacing:0}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.skip-content{position:fixed;top:-100px;left:24px;z-index:30;padding:12px 20px;background:var(--ink);color:var(--canvas)}.skip-content:focus{top:15px}.noscript-note{position:relative;padding:25px 8vw;background:var(--surface);z-index:4}
/* The real landscape remains beneath the complete first-visit journey. */
.scenery{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden;background:var(--canvas)}.scenery-image,.scenery-video,.scenery-grade,.scenery-grain{position:absolute;inset:0;width:100%;height:100%}.scenery-image{background:url('../assets/field-horizon.jpg') center 55%/cover;transform:scale(1.055);opacity:.65;transition:opacity 1.4s ease,transform 2s var(--ease)}.scenery-video{object-fit:cover;opacity:0;transition:opacity 1.4s ease}.scenery-video.ready{opacity:.4}.scenery-grade{background:linear-gradient(90deg,#031107bd,#03110742 65%),linear-gradient(180deg,#050f0868,transparent 43%,#050f08ed);transition:opacity 1.2s ease}.scenery-grain{opacity:.14;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.7' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Cpath fill='%23ede8da' filter='url(%23n)' opacity='.3' d='M0 0h180v180H0z'/%3E%3C/svg%3E");mix-blend-mode:soft-light}body:not([data-chapter='0']):not([data-chapter='6']) .scenery-image{opacity:.26;transform:scale(1.11)}body:not([data-chapter='0']):not([data-chapter='6']) .scenery-video{opacity:0}body:not([data-chapter='0']):not([data-chapter='6']) .scenery-grade{opacity:.92}body[data-brand=world] .scenery-image{background-image:url('../assets/field-horizon.jpg');background-position:50% 35%;opacity:.16}body[data-brand=world] .scenery-grade{background:linear-gradient(90deg,#05060ae8,#05060a68),linear-gradient(180deg,#05060a66,transparent 45%,#05060a)}body[data-brand=world][data-chapter='0'] .scenery-video{opacity:0}body[data-brand=world]:not([data-chapter='0']):not([data-chapter='6']) .scenery-image{opacity:.15}body[data-brand=world][data-chapter='6'] .scenery-image{opacity:.46}
.site-header{height:102px;padding:0 clamp(24px,4.8vw,92px);display:flex;align-items:center;justify-content:space-between;gap:25px;position:fixed;inset:0 0 auto;z-index:20;background:linear-gradient(180deg,var(--canvas),transparent);transition:background .4s}.wordmark{font:400 33px/1.1 var(--display);letter-spacing:-.04em;white-space:nowrap}body[data-brand=world] .wordmark{font-size:27px;letter-spacing:-.02em}.header-note{font-size:11px;letter-spacing:.015em;color:var(--muted);display:flex;align-items:center;gap:15px}.header-note i{width:3px;height:3px;border-radius:50%;background:var(--muted)}.skip-entry{font-size:11px;padding:10px 0;display:flex;align-items:center;gap:23px}.skip-entry>span{font-size:18px}.site-header:after{content:'';position:absolute;bottom:0;left:4.8vw;right:4.8vw;height:1px;background:var(--line);transform:scaleX(var(--scene-progress));transform-origin:left}
.chapter{min-height:100svh;max-width:1640px;padding:150px clamp(26px,6.5vw,112px) 135px;margin:auto;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);align-items:center;gap:clamp(50px,7vw,120px);position:relative;scroll-margin-top:0}.chapter-copy{position:relative;z-index:2;max-width:650px}.chapter-numeral{font:12px var(--label);letter-spacing:.07em;display:block;color:var(--faint);margin-bottom:30px}.hero .chapter-numeral{display:none}.reveal-title{font:400 clamp(42px,4.75vw,80px)/1.09 var(--serif);letter-spacing:-.055em;margin:0 0 27px}.hero .reveal-title{font-size:clamp(58px,5.9vw,102px);line-height:1.08;letter-spacing:-.055em}.line-clip{display:block;overflow:hidden;padding:.12em .025em;margin:-.12em -.025em}.line-clip>span{display:block;transform-origin:0 100%}.js .chapter .line-clip>span{opacity:0;transform:translateY(115%) rotateX(12deg);transition:transform 1.15s var(--ease),opacity .8s var(--ease);transition-delay:calc(var(--line-index,0)*.13s)}.js .chapter.is-visible .line-clip>span{opacity:1;transform:translateY(0) rotateX(0)}.lede{font-size:clamp(15px,1.22vw,19px);line-height:1.8;letter-spacing:-.015em;color:var(--muted);max-width:43ch;margin:0}.hero .lede{max-width:38ch}.supporting{font-size:14px;line-height:1.85;color:var(--muted);margin-top:24px}.primary{display:inline-flex;align-items:center;justify-content:space-between;gap:40px;min-height:57px;padding:15px 23px 15px 26px;background:var(--ink);color:var(--canvas);border:1px solid var(--ink);border-radius:50px;font-size:12px;letter-spacing:.01em;transition:background .3s,transform .3s var(--ease);margin-top:32px}.primary:hover{background:transparent;color:var(--ink);transform:translateY(-2px)}.arrow-icon{width:25px;height:25px;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0;transition:transform .45s var(--ease)}.primary:hover .arrow-icon,.text-link:hover .arrow-icon{transform:translateX(4px)}.text-link{display:inline-flex;align-items:center;gap:25px;font-size:12px;margin-top:29px;border-bottom:1px solid var(--line);padding-bottom:10px}.hero-signature{font:italic 19px/1.7 var(--serif);color:var(--muted);margin-top:36px}.hero-answer{font:29px/1.5 var(--serif);margin:25px 0 0}.hero-answer>span{font:13px/1.8 Inter,sans-serif;color:var(--muted);display:block;max-width:32ch;margin-top:10px}body[data-brand=world] .hero .lede{font:38px/1.4 var(--serif);color:var(--ink)}body[data-brand=world] .hero .reveal-title{font-size:clamp(65px,6.4vw,111px)}.scroll-cue{position:absolute;left:clamp(26px,6.5vw,112px);bottom:114px;font:10px var(--label);display:flex;align-items:center;gap:31px;color:var(--muted)}.scroll-cue span{font:20px Inter}.visual-note{font-size:10px;letter-spacing:.015em;color:var(--muted);text-align:center;margin:25px 0 0;line-height:1.7}.wave-icon{stroke:currentColor;stroke-width:1.2;stroke-linecap:round}
/* Perspective is spatial explanation, with independent foreground planes. */
[data-tilt]{--tilt-x:0deg;--tilt-y:0deg;perspective:1200px;transform-style:preserve-3d}.resonance-stage{position:relative;height:540px;min-width:0}.resonance-orbit{height:470px;position:relative;transform-style:preserve-3d;transform:rotateX(calc(-6deg + var(--tilt-x))) rotateY(calc(-12deg + var(--tilt-y)));transition:transform 1.2s var(--ease)}.resonance-ring{position:absolute;width:380px;height:380px;border:1px solid #ede8da60;border-radius:50%;left:50%;top:50%;margin:-190px 0 0 -190px;transform-style:preserve-3d;box-shadow:0 0 0 1px #050f0818}.ring-one{transform:rotateX(68deg) rotateY(-16deg) translateZ(22px)}.ring-two{transform:rotateX(68deg) rotateY(-16deg) translateZ(-42px);border-color:#ede8da35;width:440px;height:440px;margin:-220px 0 0 -220px}.ring-three{transform:rotateY(60deg) rotateZ(-18deg);border-color:#ede8da40;width:335px;height:335px;margin:-167px 0 0 -167px}.resonance-core{position:absolute;left:50%;top:50%;width:126px;height:126px;margin:-63px 0 0 -63px;border:1px solid #ede8da75;border-radius:50%;background:#10341feb;display:grid;place-items:center;transform:translateZ(80px);box-shadow:0 30px 80px #030d0770,inset 0 1px 0 #ede8da21}.resonance-core svg{width:73px;height:73px}.input-floating{position:absolute;padding:17px 23px;border:1px solid #ede8da44;min-width:178px;background:#0c2117f2;font:26px/1.3 var(--serif);box-shadow:0 24px 44px #030d0755;transform-style:preserve-3d;display:flex;align-items:center;justify-content:space-between;gap:20px;border-radius:3px}.input-floating span{font:9px var(--label);color:var(--muted)}.input-message{left:-4%;top:56px;transform:translateZ(135px) rotateY(7deg) rotateZ(-6deg)}.input-image{right:-8%;top:211px;transform:translateZ(24px) rotateY(-10deg) rotateZ(7deg)}.input-website{left:14%;bottom:20px;transform:translateZ(175px) rotateY(5deg) rotateZ(-3deg)}.resonance-stage .visual-note{position:absolute;bottom:0;width:100%}.js .resonance-orbit{opacity:0;transform:rotateX(25deg) rotateY(-32deg) translateY(70px)}.js .is-visible .resonance-orbit{opacity:1;transform:rotateX(calc(-6deg + var(--tilt-x))) rotateY(calc(-12deg + var(--tilt-y)));transition:transform 1.8s var(--ease),opacity 1.5s var(--ease)}
.orbital-stage{height:620px;position:relative;isolation:isolate}.orbit-system{width:590px;height:590px;position:absolute;left:50%;top:50%;margin:-295px 0 0 -295px;transform-style:preserve-3d;transform:rotateX(var(--tilt-x)) rotateY(var(--tilt-y));transition:transform 1.6s var(--ease)}.earth-sphere{width:455px;height:455px;position:absolute;left:50%;top:50%;margin:-227.5px;border-radius:50%;overflow:hidden;transform:translateZ(25px);background:#081325;box-shadow:0 0 2px 2px #7fb4e66b,0 0 26px #7fb4e619,0 0 100px #050e2280}.earth-sphere img{width:118%;height:118%;object-fit:cover;position:absolute;left:-9%;top:-9%;border-radius:50%;filter:brightness(.76) saturate(.82)}.sphere-shade{position:absolute;inset:0;border-radius:50%;background:radial-gradient(circle at 35% 30%,transparent 25%,#01040b25 60%,#01040be6 97%);box-shadow:inset -34px -15px 45px #02050b70}.world-orbit{position:absolute;inset:14px;border:1px solid #d6e7fc60;border-radius:50%;transform:rotateX(68deg) rotateZ(-22deg);transform-style:preserve-3d}.orbit-two{inset:-15px;transform:rotateY(65deg) rotateZ(32deg);border-color:#a8c4e82c}.orbital-point{position:absolute;width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px #7fb4e654;transform:translateZ(85px)}.point-one{left:37px;top:300px}.point-two{right:84px;top:135px}.point-three{left:260px;bottom:20px}.orbit-label{position:absolute;font:11px Inter;letter-spacing:.02em;color:var(--muted);padding:8px 13px;background:#05060a9c;border:1px solid #c2d1e422;border-radius:30px;z-index:4}.orbit-label.people{top:53px;left:15px}.orbit-label.ideas{right:-20px;top:202px}.orbit-label.technology{left:-12px;bottom:156px}.orbit-label.events{bottom:63px;right:60px}.orbital-stage .visual-note{position:absolute;bottom:-20px;width:100%}.js .orbit-system{opacity:0;transform:rotateY(-22deg) translateZ(-140px) scale(.8);transition:transform 2.2s var(--ease),opacity 1.8s var(--ease)}.js .is-visible .orbit-system{opacity:1;transform:rotateX(var(--tilt-x)) rotateY(var(--tilt-y)) translateZ(0) scale(1)}
/* Input and ledger interaction. */
.input-explorer{padding:15px 0}.input-tabs,.subject-tabs{display:flex;gap:22px;border-bottom:1px solid var(--line);padding-bottom:16px}.input-tabs button,.subject-tabs button{font-size:12px;padding:8px 2px;color:var(--muted);position:relative}.input-tabs button:after,.subject-tabs button:after{content:'';position:absolute;left:0;bottom:-17px;width:100%;height:1px;background:var(--ink);transform:scaleX(0);transition:transform .4s var(--ease)}.input-tabs button[aria-pressed=true],.subject-tabs button[aria-pressed=true]{color:var(--ink)}.input-tabs button[aria-pressed=true]:after,.subject-tabs button[aria-pressed=true]:after{transform:scaleX(1)}.input-canvas{padding:36px 0 0}.input-canvas h3,.ledger-front h3{font:400 35px/1.15 var(--serif);letter-spacing:-.035em;margin:30px 0 15px;max-width:380px}.input-description{font-size:13px;line-height:1.85;color:var(--muted);max-width:44ch}.input-hint{font-size:11px;line-height:1.8;color:var(--muted);margin-top:27px}.format-visual{height:235px;position:relative;perspective:1000px}.format-visual>div{position:absolute;inset:18px 5% 8px;transition:transform .9s var(--ease),opacity .45s;transform:rotateY(-16deg) rotateX(8deg);border:1px solid #ede8da55;background:#102219eb;border-radius:7px;box-shadow:0 35px 60px #010b0670}.format-message{padding:38px}.format-message span{height:2px;display:block;background:#ede8da61;width:84%;margin:17px 0}.format-message span:nth-child(2){width:65%}.format-message span:nth-child(3){width:76%}.format-message i{position:absolute;bottom:24px;right:27px;width:25px;height:25px;border:1px solid var(--line);border-radius:50%}.format-image{overflow:hidden;background:#153223!important}.image-hill{position:absolute;background:#32663d;border-radius:50%;width:100%;height:130%;transform:rotate(-19deg);top:38%;left:-15%;border:1px solid #abcbb937}.image-hill.two{background:#224b2c;top:50%;left:40%}.format-image>i{position:absolute;top:24px;right:24px;width:22px;height:22px;background:#d1dbc78c;border-radius:50%}.browser-dots{border-bottom:1px solid var(--line);padding:0 18px 6px;font-size:29px;letter-spacing:5px;color:var(--muted)}.format-website span{position:absolute;left:28px;top:89px;width:38%;height:2px;background:#ede8da70}.format-website span:nth-of-type(2){top:109px;width:29%}.format-website i{position:absolute;right:25px;top:75px;width:32%;height:92px;background:#1e4a2e;border:1px solid #c8e8c522}.input-canvas[data-format=text] .format-image,.input-canvas[data-format=text] .format-website,.input-canvas[data-format=image] .format-message,.input-canvas[data-format=image] .format-website,.input-canvas[data-format=website] .format-message,.input-canvas[data-format=website] .format-image{opacity:0;transform:translateZ(-150px) rotateY(-35deg) rotateX(16deg);pointer-events:none}.ledger-top{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:21px;margin-bottom:17px;gap:20px}.ledger-top>span:first-child{font:25px var(--serif)}.ledger-top>span:last-child{font-size:10px;color:var(--muted)}.subject-tabs{gap:24px}.ledger-perspective{height:348px;position:relative;margin:37px 0 0}.ledger-page{position:absolute;inset:0;background:#0b1422;border:1px solid #c2d1e43d;padding:34px;transform-style:preserve-3d;transform-origin:50% 90%;transition:transform .9s var(--ease)}.ledger-back{transform:translateY(-24px) translateZ(-80px) rotateY(-8deg) scale(.92);opacity:.4;background:#142539}.ledger-mid{transform:translateY(-12px) translateZ(-40px) rotateY(-4deg) scale(.96);opacity:.7;background:#0c1a2b}.ledger-front{background:#090e17;transform:rotateX(calc(4deg + var(--tilt-x))) rotateY(calc(-5deg + var(--tilt-y)));box-shadow:0 40px 65px #01030855}.small-label{font-size:10px;color:var(--faint);letter-spacing:.06em}.ledger-front h3{font-size:37px;margin-top:23px}.ledger-front .input-description{font-size:12px;line-height:1.8}.ledger-foot{position:absolute;left:34px;right:34px;bottom:26px;display:flex;justify-content:space-between;padding-top:17px;border-top:1px solid var(--line);font-size:10px;color:var(--muted)}.ledger-explorer .visual-note{text-align:left;font-size:10px;margin-top:11px}.ledger-explorer .input-hint{margin-bottom:0}
/* A reading is one coherent object. Reveals never change its data. */
.reading-wrap{width:100%;max-width:520px;justify-self:center}.reading-card{padding:24px 29px 19px;background:#07170ef5;border:1px solid #ede8da47;box-shadow:0 35px 90px #02090648;position:relative;border-radius:2px}.reading-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:17px;gap:20px;font:11px var(--label)}.sample-label{color:var(--faint);font:10px Inter}.score-block{display:flex;align-items:flex-end;justify-content:space-between;padding:20px 0 17px;gap:20px}.score-label{font:25px/1 var(--serif);display:block}.score-value{font:400 106px/.95 var(--display);display:block;letter-spacing:-.055em;color:var(--accent);margin-top:16px}.score-direction{text-align:right;font:12px var(--label);color:var(--accent);margin-bottom:10px}.score-direction span{display:block;color:var(--muted);font-size:10px;margin-top:8px}.score-scale{height:2px;background:var(--line);position:relative;margin-top:6px}.score-fill{position:absolute;inset:0;transform:scaleX(.755);transform-origin:left;background:var(--accent)}.scale-midpoint,.scale-location{position:absolute;width:1px;height:13px;background:var(--accent);top:-5px;left:75.5%}.scale-midpoint{left:50%;height:11px;top:-4px;background:var(--muted)}.scale-labels{position:relative;display:flex;justify-content:space-between;font:10px var(--label);color:var(--muted);margin-top:12px}.scale-labels span:nth-child(2){position:absolute;left:50%;transform:translateX(-50%);white-space:nowrap}.profile-heading{display:flex;justify-content:space-between;border-top:1px solid var(--line);margin-top:24px;padding-top:18px;padding-bottom:12px;font:10px var(--label);color:var(--muted)}.emotion-bars{display:grid;gap:3px}.emotion-bar{width:100%;display:grid;grid-template-columns:132px 1fr 44px;align-items:center;gap:13px;padding:7px 0;text-align:left;position:relative;border-radius:2px;font:11px var(--label)}.emotion-bar:before{content:'';position:absolute;inset:1px -10px;z-index:0;background:var(--ink);opacity:0;transition:opacity .25s}.emotion-bar:hover:before,.emotion-bar:focus-visible:before{opacity:.065}.emotion-name{display:flex;align-items:center;gap:9px;z-index:1}.emotion-name svg{width:19px;height:19px;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}.emotion-name>span{font-size:11px}.bar-track{height:3px;background:var(--line);position:relative}.bar-value{position:absolute;inset:0;transform:scaleX(var(--level,.8));transform-origin:left;background:var(--ink)}.emotion-value{text-align:right;position:relative;font-size:11px}.emotion-bar.is-focused:before{opacity:.055}.emotion-bar.is-focused .emotion-value{color:var(--accent)}.reading-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);padding-top:17px;margin-top:19px;font:10px var(--label);color:var(--faint)}body[data-brand=world] .reading-card{background:#070b12f7;border-color:#c2d1e447}body[data-brand=world] .bar-value{background:var(--emotion-color)}body[data-brand=world] .emotion-bar.is-focused .emotion-value{color:var(--emotion-color)}.reading-card[data-focus=midpoint] .scale-midpoint{box-shadow:0 0 0 7px #7fb4e630}.lesson-controls,.evidence-tabs{display:flex;gap:19px;flex-wrap:wrap;margin-top:30px}.lesson-controls button,.evidence-tabs button{font-size:11px;color:var(--muted);border-bottom:1px solid transparent;padding:7px 0}.lesson-controls button[aria-pressed=true],.evidence-tabs button[aria-pressed=true]{color:var(--ink);border-color:var(--ink)}.scale-explainer,.evidence-explainer{min-height:138px;margin-top:21px;padding-top:19px;border-top:1px solid var(--line);max-width:470px}.scale-explainer h3,.evidence-explainer h3{font:400 27px/1.2 var(--serif);margin:0 0 12px;letter-spacing:-.02em}.scale-explainer p,.evidence-explainer p{font-size:13px;line-height:1.8;color:var(--muted);margin:0}.fine-copy{font-size:11px;line-height:1.85;color:var(--faint);max-width:50ch;margin-top:21px}.emotion-explainer{display:grid;grid-template-columns:1fr auto;gap:6px 25px;margin-top:27px;padding-top:21px;border-top:1px solid var(--line);max-width:460px}.emotion-focus-name{font:32px var(--serif)}.emotion-focus-value{font:400 37px var(--display);color:var(--accent)}.emotion-focus-copy{grid-column:1/-1;color:var(--muted);font-size:13px;line-height:1.75;margin:7px 0 0;min-height:67px}.unit-switch{display:inline-flex;margin-top:17px;border:1px solid var(--line);border-radius:30px;padding:4px;gap:4px}.unit-switch button{font-size:10px;min-height:32px;min-width:70px;border-radius:24px;padding:5px 14px;color:var(--muted)}.unit-switch button[aria-pressed=true]{background:var(--ink);color:var(--canvas)}.metric-links{display:flex;gap:22px;margin-top:18px}.metric-links button{font-size:10px;padding:8px 0;color:var(--muted);display:flex;gap:13px;align-items:center;border-bottom:1px solid var(--line)}.metric-links button[aria-expanded=true]{color:var(--ink);border-color:var(--ink)}.metric-detail{max-width:460px;padding:17px 0 0;font-size:12px;line-height:1.8;color:var(--muted)}.metric-detail strong{font:29px var(--serif);color:var(--ink);font-weight:400;display:block;margin-bottom:7px}.record-buttons{display:flex;gap:12px;justify-content:center;margin-top:22px}.record-buttons button{border:1px solid var(--line);font-size:11px;padding:9px 24px;border-radius:26px;color:var(--muted)}.record-buttons button[aria-pressed=true]{border-color:var(--ink);background:var(--ink);color:var(--canvas)}
/* The receipt can be opened into the source, models, and context planes. */
.receipt-study{height:590px;position:relative}.receipt-stack{height:445px;position:relative;transform-style:preserve-3d;transform:rotateX(calc(8deg + var(--tilt-x))) rotateY(calc(-18deg + var(--tilt-y)));transition:transform 1.1s var(--ease)}.receipt-sheet{position:absolute;inset:30px 5% 10px;padding:29px 33px;background:#0c1d14;border:1px solid #d5e4ca62;box-shadow:0 24px 70px #02080750;border-radius:2px;transform-style:preserve-3d;transition:transform 1.25s var(--ease),opacity 1s;transform-origin:center}.back-sheet{transform:translateX(27px) translateY(-29px) translateZ(-85px);background:#143722}.middle-sheet{transform:translateX(13px) translateY(-14px) translateZ(-42px);background:#0e291a}.front-sheet{transform:translateZ(0)}.receipt-sheet>span{font:10px var(--label);color:var(--muted);letter-spacing:.02em;display:block;border-bottom:1px solid var(--line);padding-bottom:17px}.front-sheet .wave-icon{display:block;width:67px;height:67px;margin:25px 0;color:var(--accent)}.front-sheet b{display:block;font:400 46px/1.13 var(--serif);letter-spacing:-.04em}.front-sheet small{font:11px var(--label);margin-top:29px;display:block;color:var(--muted)}.sheet-lines{height:110px;margin-top:34px;background:repeating-linear-gradient(180deg,transparent,transparent 25px,#d5e4ca35 25px,#d5e4ca35 26px)}.receipt-sheet>i{display:block;width:50px;height:50px;border:1px solid var(--line);border-radius:50%;position:absolute;bottom:30px;right:30px}.receipt-study.is-open .receipt-stack{transform:rotateX(24deg) rotateY(-29deg) scale(.84) translateY(0)}.receipt-study.is-open .front-sheet{transform:translateZ(100px) translateX(-45px) translateY(80px)}.receipt-study.is-open .middle-sheet{transform:translateZ(0) translateX(15px) translateY(-25px)}.receipt-study.is-open .back-sheet{transform:translateZ(-120px) translateX(70px) translateY(-136px)}.unfold-button{margin:25px auto 0;display:flex;gap:30px;align-items:center;font-size:11px;border-bottom:1px solid var(--line);padding:12px 0}.unfold-button span{font-size:21px}.receipt-study .visual-note{margin-top:18px}.example-fact{display:block;margin-top:18px;color:var(--ink);font-size:10px;padding:12px 14px;background:#c2d1e40b;border:1px solid var(--line)}body[data-brand=world] .receipt-sheet{background:#0b121e;border-color:#c2d1e455}body[data-brand=world] .middle-sheet{background:#101e32}body[data-brand=world] .back-sheet{background:#182d45}
.history-chart{margin-top:25px;max-width:480px}.history-heading{display:flex;justify-content:space-between;gap:20px;font-size:10px;color:var(--muted);margin-bottom:18px}.history-chart svg{display:block;width:100%;overflow:visible}.history-grid{stroke:var(--line);stroke-width:1}.history-line{stroke:var(--accent);stroke-width:2;fill:none}.history-dots{fill:var(--accent)}.history-chart text{fill:var(--muted);font:11px Inter,sans-serif}.history-axis text{fill:var(--faint);font-size:10px}.history-values text.is-selected{fill:var(--accent)}.change-insight{display:flex;align-items:center;gap:18px;margin-top:23px;padding-top:16px;border-top:1px solid var(--line)}.change-insight strong{font:400 58px/1 var(--display);letter-spacing:-.03em;color:var(--accent)}.change-insight p{font-size:12px;color:var(--muted);margin:0;max-width:23ch}
.finale{display:flex;flex-direction:column;justify-content:center;text-align:center;gap:0;padding-top:135px;padding-bottom:165px;min-height:110svh}.final-copy{position:relative;z-index:2}.finale .reveal-title{font-size:clamp(57px,6.7vw,113px);letter-spacing:-.045em}.finale .lede{max-width:47ch;margin:auto}.finale .primary{margin-top:31px;gap:50px}.replay-button{display:block;margin:28px auto 0;font-size:11px;color:var(--muted);padding:8px;letter-spacing:.01em}.replay-button span{margin-left:13px;font-size:17px}.final-emblem{width:190px;height:127px;position:relative;margin-bottom:38px;perspective:900px}.emblem-ring{position:absolute;width:178px;height:178px;left:6px;top:-27px;border:1px solid #ede8da58;border-radius:50%;transform:rotateX(66deg) rotateY(-16deg)}.emblem-ring.second{transform:rotateY(62deg) rotateX(-22deg);border-color:#ede8da26}.final-emblem .wave-icon{position:absolute;width:70px;height:70px;left:60px;top:9px;color:var(--ink)}.final-emblem>span{position:absolute;bottom:-11px;width:100%;left:0;font:11px var(--label);color:var(--muted)}.final-footnote{position:absolute;bottom:113px;left:20px;right:20px;font-size:11px;color:var(--muted)}body[data-brand=world] .final-emblem .emblem-ring{border-color:#7fb4e67a}body[data-brand=world] .finale .reveal-title{font-size:clamp(67px,7.8vw,132px)}
.journey-footer{position:fixed;bottom:0;left:0;right:0;z-index:20;height:83px;padding:0 clamp(24px,4.8vw,92px);display:flex;justify-content:space-between;align-items:center;gap:30px;background:linear-gradient(0deg,var(--canvas) 30%,transparent);pointer-events:none}.journey-footer>*{pointer-events:auto}.journey-position{display:flex;align-items:center;gap:12px;font:10px var(--label);color:var(--muted);min-width:84px}.position-rule{display:block;width:27px;height:1px;background:var(--line)}#stepNumber{color:var(--ink)}.journey-footer nav{display:flex;gap:21px;align-items:center}.journey-footer nav a{display:flex;gap:8px;align-items:center;font-size:10px;color:var(--faint);padding:13px 0;white-space:nowrap}.journey-footer nav a i{width:4px;height:4px;border:1px solid var(--faint);border-radius:50%;display:block;transition:background .3s,transform .3s}.journey-footer nav a[aria-current=step]{color:var(--ink)}.journey-footer nav a[aria-current=step] i{background:var(--accent);border-color:var(--accent);transform:scale(1.3)}.motion-control{display:flex;gap:9px;align-items:center;font-size:10px;color:var(--muted);min-height:44px;padding:5px 0}.motion-control svg{width:19px;height:19px;stroke:currentColor;stroke-width:1.4;stroke-linecap:round}.motion-control[aria-pressed=true]{color:var(--accent)}
@media(min-width:1800px){.chapter{gap:130px}.hero .reveal-title{font-size:110px}.hero .chapter-copy{max-width:700px}}
@media(max-width:1200px){.chapter{gap:55px;padding-left:6vw;padding-right:6vw}.header-note{display:none}.hero .reveal-title{font-size:6.8vw}.chapter-copy .reveal-title{letter-spacing:-.055em}.resonance-stage{transform:scale(.85);margin-left:-20px;margin-right:-20px}.orbital-stage{transform:scale(.82);margin-left:-45px;margin-right:-45px}.journey-footer nav{gap:16px}.journey-footer nav a{font-size:9px}.journey-position{min-width:65px;gap:8px}.reading-card{padding:22px 23px 18px}.emotion-bar{grid-template-columns:113px 1fr 39px;gap:10px}.emotion-name>span{font-size:10px}.emotion-name svg{width:17px;height:17px}.score-value{font-size:98px}.receipt-study{transform:scale(.95)}.ledger-page{padding:29px}.ledger-front h3{font-size:33px}.ledger-front .input-description{font-size:11px}.ledger-foot{left:29px;right:29px}.subject-tabs{gap:18px}}
@media(max-width:1000px){.chapter{gap:36px;padding-left:5vw;padding-right:5vw}.reveal-title{font-size:5.5vw}.hero .reveal-title{font-size:7vw}body[data-brand=world] .hero .reveal-title{font-size:7.1vw}.lede{font-size:14px}.hero-answer{font-size:27px}.hero-answer>span{font-size:12px}.primary{font-size:11px;gap:25px}.orbital-stage{transform:scale(.68);margin-left:-65px;margin-right:-65px}.resonance-stage{transform:scale(.72);margin-left:-45px;margin-right:-45px}.journey-footer{padding-left:4vw;padding-right:4vw;gap:18px}.journey-footer nav{gap:13px}.journey-footer nav a{gap:5px;font-size:9px}.journey-footer .motion-control span{display:none}.reading-top{gap:7px;font-size:10px}.sample-label{font-size:8px}.score-direction{font-size:10px}.score-value{font-size:90px}.emotion-bar{grid-template-columns:105px 1fr 36px;gap:8px}.emotion-name{gap:6px}.emotion-name>span{font-size:9px}.emotion-value{font-size:10px}.profile-heading,.reading-bottom{font-size:9px}.scale-labels{font-size:8px}.receipt-sheet{inset:35px 1% 5px;padding:27px}.front-sheet b{font-size:39px}.evidence-tabs,.lesson-controls{gap:15px}.lesson-controls button,.evidence-tabs button{font-size:10px}.subject-tabs{gap:16px}.subject-tabs button{font-size:10px}.ledger-page{padding:23px}.ledger-front h3{font-size:29px}.ledger-front .input-description{font-size:11px}.ledger-foot{left:23px;right:23px;font-size:9px}.input-canvas h3{font-size:30px}.format-visual{height:210px}.metric-links{gap:16px}.metric-links button{font-size:9px}.change-insight strong{font-size:50px}.change-insight p{font-size:11px}}
@media(max-width:760px){html{scroll-padding-top:95px}.site-header{height:82px;padding:0 23px;gap:18px;background:linear-gradient(180deg,var(--canvas) 25%,transparent)}.wordmark{font-size:29px}body[data-brand=world] .wordmark{font-size:25px}.skip-entry{font-size:10px;gap:12px}.skip-entry>span{font-size:15px}.chapter{display:flex;flex-direction:column;align-items:stretch;justify-content:center;gap:42px;padding:117px 26px 120px;min-height:100svh;max-width:580px}.chapter-copy{max-width:none}.chapter-numeral{font-size:10px;margin-bottom:21px}.reveal-title{font-size:clamp(43px,8.2vw,66px);line-height:1.1;margin-bottom:23px}.hero{padding-top:132px;padding-bottom:132px;min-height:105svh;gap:14px;overflow:clip}.hero .reveal-title,body[data-brand=world] .hero .reveal-title{font-size:clamp(48px,10.4vw,75px);letter-spacing:-.045em}.lede{font-size:14px;max-width:43ch;line-height:1.85}.hero .lede{font-size:13px;line-height:1.85;max-width:39ch}body[data-brand=world] .hero .lede{font-size:31px}.hero-answer{font-size:25px;margin-top:20px}.hero-answer>span{font-size:12px;max-width:36ch}.hero .primary{margin-top:26px}.primary{padding:13px 21px 13px 23px;min-height:52px;font-size:11px}.hero-signature{font-size:16px;margin-top:23px;margin-bottom:0}.resonance-stage{height:310px;transform:scale(.7);transform-origin:50% 0;margin:6px -40px -55px}.resonance-orbit{height:360px}.resonance-stage .visual-note{bottom:-77px;font-size:12px}.input-floating{font-size:24px}.input-message{left:3%;top:16px}.input-image{right:0;top:137px}.input-website{left:20%;bottom:-14px}.orbital-stage{height:350px;transform:scale(.65);transform-origin:50% 0;margin:30px -80px -110px}.orbit-system{top:220px}.orbit-label.people{left:70px;top:45px}.orbit-label.ideas{right:50px;top:166px}.orbit-label.technology{left:40px;bottom:6px}.orbit-label.events{bottom:-85px;right:100px}.orbital-stage .visual-note{bottom:-190px;font-size:14px}.scroll-cue{display:none}.chapter .reading-wrap{max-width:440px;width:100%;margin:auto}.reading-card{padding:23px 24px 19px}.score-value{font-size:105px}.score-label{font-size:25px}.score-direction{font-size:11px}.reading-top{font-size:10px}.sample-label{font-size:9px}.emotion-bar{grid-template-columns:123px 1fr 39px;gap:10px;min-height:34px;padding:7px 0}.emotion-name>span{font-size:11px}.emotion-name svg{width:19px;height:19px}.emotion-name{gap:8px}.emotion-value{font-size:11px}.profile-heading,.reading-bottom{font-size:10px}.scale-labels{font-size:9px}.lesson-controls,.evidence-tabs{margin-top:23px;gap:22px}.lesson-controls button,.evidence-tabs button{font-size:11px;min-height:40px}.scale-explainer{min-height:0;margin-top:13px}.scale-explainer h3,.evidence-explainer h3{font-size:28px}.scale-explainer p,.evidence-explainer p{font-size:13px}.fine-copy{font-size:11px;line-height:1.85}.input-explorer{padding:0}.input-tabs,.subject-tabs{gap:26px}.input-tabs button,.subject-tabs button{font-size:12px;min-height:40px}.format-visual{height:220px}.input-canvas{padding-top:24px}.input-canvas h3{font-size:33px;margin-top:23px}.input-description{font-size:13px}.input-hint{font-size:11px}.ledger-top{margin-top:5px}.ledger-perspective{height:338px}.ledger-page{padding:27px}.ledger-front h3{font-size:36px}.ledger-front .input-description{font-size:12px}.ledger-foot{left:27px;right:27px;font-size:10px}.emotion-explainer{margin-top:22px}.emotion-focus-copy{min-height:0}.metric-links{gap:24px}.metric-links button{font-size:10px;min-height:40px}.emotion-focus-value{font-size:38px}.emotion-focus-name{font-size:32px}.receipt-study{height:520px;transform:scale(.91);transform-origin:50% 0;margin-bottom:-20px}.receipt-stack{height:410px}.receipt-sheet{inset:28px 3% 10px;padding:28px}.front-sheet b{font-size:43px}.front-sheet small{margin-top:28px}.unfold-button{font-size:12px;min-height:44px}.receipt-study .visual-note{font-size:11px}.record-buttons button{font-size:11px;padding:10px 25px;min-height:40px}.history-chart{margin-top:26px;max-width:none}.change-insight strong{font-size:60px}.history-heading{font-size:11px}.change-insight p{font-size:12px;max-width:none}.perspective-chapter{gap:35px}.journey-footer{height:75px;padding:0 20px;background:linear-gradient(0deg,var(--canvas) 50%,transparent);gap:19px}.journey-position{gap:7px;min-width:49px;font-size:9px}.position-rule{width:16px}.journey-footer nav{flex:1;justify-content:center;gap:14px}.journey-footer nav a{padding:17px 2px}.journey-footer nav a span{display:none}.journey-footer nav a i{width:5px;height:5px}.journey-footer .motion-control svg{width:19px;height:19px}.journey-footer .motion-control{min-width:30px}.finale{padding-top:127px;padding-bottom:153px;gap:0;min-height:100svh}.finale .reveal-title,body[data-brand=world] .finale .reveal-title{font-size:clamp(47px,10.4vw,72px);letter-spacing:-.045em}.finale .lede{max-width:35ch;font-size:13px}.final-emblem{transform:scale(.9);margin-bottom:33px}.finale .primary{font-size:11px;gap:32px}.final-footnote{bottom:99px;font-size:10px;max-width:34ch;margin:0 auto}.replay-button{font-size:10px}.text-link{font-size:11px;margin-top:23px}}
@media(max-width:370px){.site-header{padding:0 19px}.wordmark{font-size:27px}body[data-brand=world] .wordmark{font-size:22px}.skip-entry{font-size:9px}.chapter{padding-left:21px;padding-right:21px}.reading-card{padding:20px}.emotion-bar{grid-template-columns:112px 1fr 36px;gap:8px}.emotion-name>span{font-size:10px}.emotion-name svg{width:17px}.ledger-top>span:first-child{font-size:23px}.subject-tabs{gap:21px}.subject-tabs button{font-size:11px}.reading-top{font-size:9px}.sample-label{font-size:8px}.journey-footer nav{gap:11px}.hero .reveal-title,body[data-brand=world] .hero .reveal-title{font-size:45px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;transition-delay:0ms!important}}
body[data-motion=reduce] *,body[data-motion=reduce] *:before,body[data-motion=reduce] *:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;transition-delay:0ms!important}body[data-motion=reduce] .line-clip>span{transform:none!important;opacity:1!important}body[data-motion=reduce] .resonance-orbit,body[data-motion=reduce] .orbit-system{transform:none!important;opacity:1!important}body[data-motion=reduce] .scenery-video{opacity:0!important}body[data-motion=reduce] .receipt-study.is-open .receipt-stack{transform:scale(.84)!important}
.receipt-study[data-evidence=source] .front-sheet,.receipt-study[data-evidence=models] .middle-sheet,.receipt-study[data-evidence=context] .back-sheet{border-color:var(--ink)}
.reveal-title:focus{outline:none}
@media(min-width:761px) and (max-height:850px){
 .chapter{padding-top:120px;padding-bottom:105px}.hero{height:100svh;min-height:650px;gap:70px;padding-top:112px;padding-bottom:110px}.hero .reveal-title,body[data-brand=world] .hero .reveal-title{font-size:clamp(56px,6.1vw,91px);margin-bottom:22px}.hero .lede{font-size:14px}body[data-brand=world] .hero .lede{font-size:32px}.hero-answer{font-size:25px;margin-top:16px}.hero-answer>span{font-size:11px;margin-top:7px;max-width:42ch}.hero .primary{min-height:49px;padding-top:11px;padding-bottom:11px;margin-top:24px}.hero-signature{font-size:17px;margin-top:24px}.orbital-stage{height:410px;transform:scale(.78);margin-left:-45px;margin-right:-45px}.orbital-stage .visual-note{bottom:-39px}.orbit-label.people{top:-19px}.orbit-label.ideas{top:135px;right:-12px}.orbit-label.technology{bottom:81px}.orbit-label.events{bottom:-10px}.resonance-stage{height:420px;transform:scale(.85)}.resonance-orbit{height:380px}.resonance-stage .visual-note{bottom:-24px}.input-message{top:20px}.input-image{top:156px}.input-website{bottom:0}.scroll-cue{bottom:88px;font-size:9px}.site-header{height:87px}.journey-footer{height:69px}.reveal-title{font-size:clamp(42px,4.65vw,74px)}.reading-card{padding:20px 26px 17px}.reading-top{padding-bottom:14px}.score-block{padding-top:17px;padding-bottom:15px}.score-value{font-size:91px;margin-top:12px}.profile-heading{margin-top:19px;padding-top:16px;padding-bottom:10px}.emotion-bar{padding:5px 0;min-height:29px}.reading-bottom{padding-top:14px;margin-top:15px}.receipt-study{height:500px}.receipt-stack{height:380px}.front-sheet b{font-size:39px}.front-sheet .wave-icon{width:56px;height:56px;margin:23px 0}.front-sheet small{margin-top:25px}.unfold-button{margin-top:20px}.finale{min-height:100svh;padding-top:130px;padding-bottom:125px}.final-emblem{transform:scale(.8);margin-bottom:20px;height:104px}.finale .reveal-title,body[data-brand=world] .finale .reveal-title{font-size:clamp(57px,6vw,93px)}.final-footnote{bottom:84px}
}
@media(min-width:761px){body[data-brand=vibe] .hero .reveal-title{font-size:clamp(49px,5.15vw,96px);letter-spacing:-.055em}}
html{scroll-padding-top:0}
@media(min-width:761px) and (max-height:850px){
 .reading-chapter{align-items:start;padding-top:110px;padding-bottom:100px}.reading-chapter .chapter-numeral{font-size:10px;margin-bottom:19px}.reading-chapter .reveal-title{font-size:clamp(40px,4.25vw,68px);margin-bottom:20px}.reading-chapter .lede{font-size:14px;line-height:1.75}.reading-chapter .lesson-controls{margin-top:19px}.reading-chapter .scale-explainer{min-height:107px;margin-top:16px;padding-top:16px}.reading-chapter .scale-explainer h3{font-size:25px;margin-bottom:9px}.reading-chapter .scale-explainer p{font-size:12px;line-height:1.75}.reading-chapter .text-link{margin-top:19px}.reading-card{padding:18px 26px 16px}.reading-top{padding-bottom:12px}.score-block{padding:14px 0 13px}.score-value{font-size:78px;margin-top:10px}.score-label{font-size:23px}.profile-heading{margin-top:17px;padding-top:14px;padding-bottom:8px}.emotion-bars{gap:2px}.emotion-bar{padding:3px 0;min-height:25px}.emotion-name svg{width:17px;height:17px}.reading-bottom{padding-top:12px;margin-top:13px}.emotion-explainer{margin-top:21px;padding-top:16px}.emotion-focus-name{font-size:28px}.emotion-focus-value{font-size:32px}.emotion-focus-copy{font-size:12px;min-height:60px}.fine-copy{font-size:10px;margin-top:17px}.metric-links{margin-top:13px}.unit-switch{margin-top:13px}
}
@media(min-width:761px){.reading-chapter .reading-wrap{position:sticky;top:115px;align-self:start}}
body:not([data-chapter='0']):not([data-chapter='6']) .site-header{background:linear-gradient(180deg,var(--canvas) 67%,transparent)}
.receipt-study.is-open .middle-sheet>span,.receipt-study.is-open .back-sheet>span{position:absolute;top:-33px;left:auto;right:0;color:var(--ink);border:0;font-size:11px;background:var(--canvas);padding:6px 10px;white-space:nowrap}
.line-clip>span{text-wrap:balance}.return-profile{display:none}
@media(max-width:760px){
 .journey-footer nav{gap:2px}.journey-footer nav a{width:28px;min-height:44px;justify-content:center}.journey-footer nav a i{width:5px;height:5px}.reading-card{padding:20px 22px 18px}.score-value{font-size:90px}.score-block{padding-top:16px;padding-bottom:15px}.profile-heading{margin-top:21px;padding-top:16px}.emotion-bar{min-height:30px;padding:5px 0}.reading-bottom{padding-top:15px;margin-top:17px}.emotion-tools{margin-top:-10px}.emotion-tools .emotion-explainer{margin-top:0}.return-profile{display:block;margin-top:21px;padding:11px 0;border-bottom:1px solid var(--line);font-size:11px;color:var(--muted);min-height:44px}.hero .reveal-title .line-clip>span{text-wrap:balance}
}
.site-header .entry-long,.site-header .entry-short{font-size:11px}.site-header .entry-short{display:none}.orbit-label:hover,.orbit-label:focus-visible{color:var(--ink);border-color:var(--accent);background:var(--canvas)}.input-floating:hover,.input-floating:focus-visible{background:#153421;border-color:var(--ink)}.intent-study{margin-top:25px}.intent-question{font:25px/1.3 var(--serif);margin:0 0 16px}.intent-options{display:flex;gap:15px;flex-wrap:wrap}.intent-options button{font-size:10px;border-bottom:1px solid var(--line);padding:8px 0;color:var(--muted)}.intent-options button[aria-pressed=true]{color:var(--ink);border-color:var(--ink)}.intent-reading{font-size:12px;line-height:1.8;color:var(--muted);max-width:47ch;margin:17px 0 0;min-height:66px}
@media(max-width:760px){.site-header .entry-long{display:none}.site-header .entry-short{display:inline;font-size:11px}.intent-question{font-size:27px}.intent-options{gap:21px}.intent-options button{font-size:11px;min-height:40px}.intent-reading{font-size:13px}.emotion-tools .emotion-explainer{scroll-margin-top:110px}}

/* Optional per-chapter footage stays quiet behind the teaching graphics. */
body[data-video=active]:not([data-chapter="0"]):not([data-chapter="6"]) .scenery-video.ready{opacity:.18}body[data-video=paused] .scenery-video{opacity:0}

.resonance-ring,.resonance-core{pointer-events:none}
@media(max-width:760px){.resonance-stage .visual-note{display:none}}

@media(max-width:370px){.journey-footer{padding:0 14px;gap:10px}.journey-position{min-width:45px}.journey-footer nav{gap:1px;min-width:0}.journey-footer nav a{width:22px}.journey-footer .motion-control{min-width:24px}.record-buttons button{padding-inline:20px}.lesson-controls,.evidence-tabs{gap:15px}.lesson-controls button,.evidence-tabs button{font-size:10px}}

sup{font-size:max(.4em,7px)}

@media(min-width:761px){.chapter-copy>.record-buttons{justify-content:flex-start;margin-top:22px}}
@media(max-width:370px){.reading-card{padding:18px 18px 16px}.score-value{font-size:80px}.profile-heading{margin-top:16px}.emotion-bar{min-height:28px;padding-block:4px}.reading-bottom{margin-top:13px}.score-block{padding-top:14px;padding-bottom:12px}}