.home{--home-gutter:clamp(1.25rem,4vw,3rem);max-width:1240px;margin:0 auto;padding:0 var(--home-gutter)}.sec{position:relative;padding-block:clamp(5rem,11vw,10rem) 0}.two-tone{margin:0;font-size:clamp(1.05rem,1.35vw,1.2rem);line-height:1.55;color:var(--echo-text-dim);text-wrap:pretty}.two-tone strong{font-weight:600;color:var(--echo-text)}[data-reveal]{transition:clip-path 1s cubic-bezier(.2,.7,.2,1),translate 1s cubic-bezier(.2,.7,.2,1)}[data-reveal=out]{clip-path:inset(100% -60px -60px -60px);translate:0 56px}[data-reveal=in]{clip-path:inset(-60px)}.guide-stop{--guide-size:72px;display:block;flex:none;width:var(--guide-size);height:var(--guide-size);pointer-events:none}.echo3d{inset:0;z-index:40;width:100%;height:100%}.echo3d,.echo3d-tag{position:fixed;pointer-events:none}.echo3d-tag{left:0;top:0;z-index:41;padding:4px 12px;border-radius:var(--echo-radius-full,999px);background:color-mix(in oklab,var(--echo-surface) 92%,transparent);color:var(--echo-text);font-size:.85rem;font-weight:600;white-space:nowrap;box-shadow:0 8px 18px -8px color-mix(in oklab,var(--echo-cast-ink,var(--echo-shade-ink,black)) calc(.7 * var(--echo-shade, 1) * 100%),transparent);opacity:0;transition:opacity .2s ease}.echo3d-tag[data-on]{opacity:1}.guide{position:fixed;top:0;left:0;z-index:40;width:188px;height:188px;transform-origin:50% 92.1%;pointer-events:none;visibility:hidden;will-change:transform}.guide__lean{width:100%;height:100%;transform-origin:50% 60%}.guide .echo-creature{filter:drop-shadow(0 18px 18px color-mix(in oklab,var(--echo-cast-ink,var(--echo-shade-ink,black)) calc(.45 * var(--echo-shade, 1) * 100%),transparent))}.home{--seam-v:linear-gradient(180deg,transparent,var(--echo-seam) 12%,var(--echo-seam) 88%,transparent);--seam-h:linear-gradient(90deg,transparent,var(--echo-seam) 8%,var(--echo-seam) 92%,transparent);--lip:rgb(255 255 255/calc(0.04 * var(--echo-gloss, 1)))}.objects__cell:before{bottom:0;width:2px;background:var(--seam-v);box-shadow:1px 0 0 var(--lip);opacity:var(--seam-l,0)}.objects__cell:after,.objects__cell:before{content:"";position:absolute;left:0;top:0;pointer-events:none}.objects__cell:after{right:0;height:2px;background:var(--seam-h);box-shadow:0 1px 0 var(--lip);opacity:var(--seam-t,0)}.objects__cell:not(:nth-child(3n+1)){--seam-l:1}.objects__cell:nth-child(n+4){--seam-t:1}.who__deferred:is([data-deferred],:has(.deferred__holding)){min-height:14rem}.home .doc-code__pre{white-space:pre-wrap;overflow-wrap:anywhere}.who__term{width:100%;min-width:0}.who__term .term__body{gap:.1rem}.who__run{display:grid;gap:.1rem;margin-inline:-.45rem;padding-inline:.45rem}.who__run+.who__run{margin-top:.75rem}.who__design{display:grid;gap:var(--echo-space-8);min-width:0}.ways__seeds{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--echo-space-7)}.ways__seed{display:flex;flex-wrap:wrap;align-items:center;gap:var(--echo-space-7)}.ways__hex{flex-basis:100%;font-family:var(--echo-font-mono);font-size:var(--echo-text-xs);letter-spacing:.06em;color:var(--echo-text-dim)}.objects__grid{grid-template-columns:repeat(3,minmax(0,1fr))}.objects__cell,.objects__grid{position:relative;display:grid}.objects__cell{grid-row:span 2;grid-template-rows:subgrid;min-width:0;margin:0}.objects__stage{display:grid;grid-template-columns:minmax(0,1fr);place-items:end center;min-width:0;padding:clamp(1.5rem,3vw,2.5rem) clamp(1rem,2vw,1.75rem)}.objects__stage>*{max-width:100%}.objects__stage:is([data-deferred],:has(.deferred__holding)){min-height:12rem}.objects__label{display:grid;align-content:start;gap:var(--echo-space-3);padding:0 clamp(1rem,2vw,1.75rem) clamp(1.5rem,3vw,2.25rem)}.objects__name{justify-self:start;font-size:var(--echo-text-sm);font-weight:700;color:var(--echo-text);text-decoration:none}.objects__title{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.4rem .75rem}.objects__tag{padding:.2rem .5rem;border:1px solid color-mix(in oklab,var(--echo-text) 18%,transparent);border-radius:999px;font-family:var(--site-font-mono),ui-monospace,monospace;font-size:.72rem;color:var(--echo-text-dim);white-space:nowrap}.objects__name:hover{text-decoration:underline;text-underline-offset:3px}.objects__what{font-size:var(--echo-text-sm);line-height:1.45;color:var(--echo-text-dim)}.objects__stop{position:absolute;top:calc(var(--guide-size) * -1 + 4px);right:clamp(1rem,2vw,1.75rem);z-index:1;--guide-size:84px}.bench__due{display:grid;justify-items:center;gap:var(--echo-space-4)}.bench__due-keys{display:flex;gap:var(--echo-space-3)}.bench__lift{display:grid;justify-items:center;gap:var(--echo-space-5)}.bench__lift-keys{display:flex;gap:var(--echo-space-3)}.bench__companions{display:flex;align-items:flex-end;gap:var(--echo-space-9)}.objects__screens{position:relative;display:grid;grid-template-columns:minmax(0,1fr);justify-items:start;margin-top:clamp(4rem,8vw,6.5rem)}.objects__screens>.big-title{width:100%}.objects__show{display:grid;grid-template-columns:minmax(0,1fr);gap:var(--echo-space-8);justify-self:center;width:min(100%,calc((100svh - var(--echo-shell-rail-h, 56px) - 7.5rem) * 1180 / 720 + 24px))}.objects__bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--echo-space-6) var(--echo-space-9)}.objects__frame{position:relative;box-sizing:border-box;padding:clamp(8px,1vw,12px);border-radius:clamp(1.25rem,2.2vw,2rem);background:linear-gradient(180deg,color-mix(in oklab,var(--echo-cap) 70%,var(--echo-surface)),var(--echo-surface));box-shadow:inset 0 1px 0 rgb(255 255 255/.08),inset 0 0 0 1px color-mix(in oklab,var(--echo-cast-ink,var(--echo-shade-ink,black)) 35%,transparent),0 2px 4px color-mix(in oklab,var(--echo-cast-ink,var(--echo-shade-ink,black)) calc(.35 * var(--echo-shade, 1) * 100%),transparent),0 40px 80px -40px color-mix(in oklab,var(--echo-cast-ink,var(--echo-shade-ink,black)) calc(.8 * var(--echo-shade, 1) * 100%),transparent)}.objects__fit{border-radius:clamp(.9rem,1.6vw,1.5rem);background:var(--echo-well);box-shadow:inset 0 2px 10px color-mix(in oklab,var(--echo-cast-ink,var(--echo-shade-ink,black)) calc(.6 * var(--echo-shade, 1) * 100%),transparent),inset 0 0 0 1px color-mix(in oklab,var(--echo-cast-ink,var(--echo-shade-ink,black)) 50%,transparent)}.objects__screen{aspect-ratio:1180/720}.objects__fit .echo-chat{height:720px;max-width:none}.objects__fit .echo-chat__thread{overflow:hidden}@media (max-width:47.99rem){.objects__show{--screen-h:clamp(24rem,100svh - var(--echo-shell-rail-h,56px) - 12rem,40rem)}.objects__screen{aspect-ratio:auto;height:var(--screen-h)}.objects__fit{max-height:var(--screen-h)}.objects__fit .echo-chat{height:var(--screen-h)}}.fit{position:relative;min-width:0;overflow:hidden;--echo-clip:decorative}.fit__screen{transform-origin:top left}.fit[data-cropped]:after{content:"";position:absolute;inset:auto 0 0;height:6rem;background:linear-gradient(to bottom,transparent,var(--fit-fade,var(--echo-well)));pointer-events:none}.objects__open{margin:0;font-size:var(--echo-text-sm);color:var(--echo-text-dim)}.objects__open a{color:var(--echo-text);text-underline-offset:3px}.objects__pick{display:flex;flex-wrap:wrap;gap:var(--echo-space-6)}.objects__pick .echo-hw{position:relative}.objects__pick .echo-hw:has(.echo-hw__cap[aria-pressed=true]):after{content:"";position:absolute;left:var(--echo-space-5);right:var(--echo-space-5);bottom:calc(var(--echo-space-3) * -1);height:2px;border-radius:var(--echo-radius-full);background:var(--echo-accent-glow);box-shadow:0 0 7px color-mix(in srgb,var(--echo-accent-glow) 70%,transparent)}.objects__more{display:flex;justify-content:center;margin-top:clamp(3rem,6vw,4.5rem)}.letter-sec{position:relative;overflow:clip;margin-top:clamp(2rem,4vw,4rem);padding-block:clamp(3rem,7vw,6rem) clamp(4rem,8vw,7rem)}.letter-sec:before{content:"";position:absolute;inset:0 0 40%;background:radial-gradient(45% 55% at 50% 45%,color-mix(in oklch,var(--echo-accent-glow) 28%,transparent),transparent 72%),radial-gradient(25% 30% at 50% 40%,color-mix(in oklch,var(--echo-accent) 18%,transparent),transparent 70%);pointer-events:none}.home-lit .letter-sec:before{display:none}.letter-sec__inner{position:relative;display:grid;grid-template-columns:minmax(0,1fr);justify-items:center;gap:clamp(3.5rem,7vw,5.5rem);max-width:1240px;margin:0 auto;padding-inline:clamp(1.25rem,4vw,3rem);box-sizing:initial}.letter-sec__head{display:grid;justify-items:center;gap:var(--echo-space-8);text-align:center}.letter{position:relative;box-sizing:border-box;width:min(100%,42rem);padding:clamp(2.25rem,5vw,3.75rem) clamp(1.5rem,5vw,3.75rem) clamp(2rem,4.5vw,3.25rem);border-radius:3px;color:var(--echo-surface);background:linear-gradient(155deg,color-mix(in oklab,var(--echo-text) 92%,white) 0,var(--echo-text) 38%,color-mix(in oklab,var(--echo-text) 94%,var(--echo-surface)) 100%);box-shadow:inset 0 1px 0 rgb(255 255 255/.5),2px 3px 6px color-mix(in oklab,var(--echo-cast-ink,var(--echo-shade-ink,black)) calc(.25 * var(--echo-shade, 1) * 100%),transparent),14px 24px 50px -12px color-mix(in oklab,var(--echo-cast-ink,var(--echo-shade-ink,black)) calc(.55 * var(--echo-shade, 1) * 100%),transparent);font-family:var(--site-font-mono),var(--echo-font-mono);font-size:clamp(.95rem,1.2vw,1.05rem);line-height:1.75;text-wrap:pretty}.letter p{margin:0 0 1.1em}.letter__date{font-size:.9em}.letter .letter__sign{margin-top:1.6em;font-family:var(--brand-font-display),var(--site-font-display),var(--echo-font-sans);font-size:2.1em;line-height:1}.letter__links{display:grid;gap:.2em;margin:0;padding:0;list-style:none}.letter__links a,.letter__ps a{color:var(--echo-surface);text-decoration-thickness:1px;text-underline-offset:3px}.letter .letter__ps{margin:1.8em 0 0;padding-top:1.1em;border-top:1px dashed color-mix(in oklab,var(--echo-surface) 45%,transparent)}.letter a:focus-visible{outline:2px solid var(--echo-surface);outline-offset:3px;border-radius:2px}.letter__photo{position:relative;float:right;width:clamp(5.5rem,16vw,8.5rem);margin:calc(-1 * clamp(3.25rem, 6vw, 4.75rem)) calc(-1 * clamp(.75rem, 3vw, 2rem)) 1rem 1.5rem;padding:6px 6px 16px;background:color-mix(in oklab,var(--echo-text) 90%,white);box-shadow:1px 2px 3px color-mix(in oklab,var(--echo-cast-ink,var(--echo-shade-ink,black)) calc(.25 * var(--echo-shade, 1) * 100%),transparent),6px 12px 22px -8px color-mix(in oklab,var(--echo-cast-ink,var(--echo-shade-ink,black)) calc(.45 * var(--echo-shade, 1) * 100%),transparent);transform:rotate(3deg)}.letter__photo img{display:block;width:100%;height:auto;aspect-ratio:4/5;object-fit:cover}.letter__clip{position:absolute;top:-22px;left:42%;width:14px;height:46px;stroke:color-mix(in oklab,var(--echo-text) 62%,var(--echo-seam))}.letter__stop{position:absolute;top:calc(var(--guide-size) * -1 + 10px);left:clamp(1.5rem,8%,3.5rem);--guide-size:96px}.support{gap:clamp(2rem,4vw,3rem);width:100%}.support,.support__head{display:grid;justify-items:center}.support__head{gap:var(--echo-space-7);max-width:40rem;text-align:center}.support__lede,.support__other{margin:0;max-width:40rem;font-size:clamp(1.02rem,1.3vw,1.12rem);line-height:1.6;color:var(--echo-text-dim);text-align:center;text-wrap:pretty}.support__other a{color:var(--echo-text);text-underline-offset:3px}.foot{position:relative;overflow:clip;padding:clamp(5rem,9vw,8rem) 0 clamp(4rem,8vw,7rem)}.foot__light{position:absolute;inset:0;z-index:0;display:block;width:100%;height:100%;pointer-events:none}.foot__col{position:relative;z-index:1;max-width:1240px;margin:0 auto;padding:0 clamp(1.25rem,4vw,3rem)}.foot__panel{position:relative;padding:clamp(2.5rem,5vw,4.5rem) clamp(1.5rem,4vw,4rem) clamp(1.5rem,3vw,2.25rem);border-radius:clamp(1.25rem,2.4vw,1.75rem);color:var(--echo-text);background:linear-gradient(165deg,var(--echo-cap) 0,var(--echo-surface) 42%,var(--echo-surface) 100%);box-shadow:inset 0 1px 0 rgb(255 255 255/calc(.07 * var(--echo-gloss, 1))),inset 0 0 0 var(--echo-line-width,1px) var(--echo-line,var(--echo-seam)),0 50px 100px -40px color-mix(in oklab,var(--echo-cast-ink,var(--echo-shade-ink,black)) 85%,transparent)}.foot__inner{display:grid;grid-template-columns:minmax(min-content,1fr) minmax(0,3.2fr);gap:clamp(2rem,5vw,4rem);align-items:start}@media (max-width:56.25rem){.foot__inner{grid-template-columns:minmax(0,1fr)}}.foot__mark{display:grid;justify-items:start;align-content:start;gap:var(--echo-space-8)}@media (max-width:21rem){.foot__lockup{zoom:.9}}.foot__line{margin:0;max-width:24rem;font-size:var(--echo-text-sm);line-height:1.6;color:var(--echo-text-dim)}.foot__legal-lines a,.foot__legal-link,.foot__works a{color:var(--echo-text);text-decoration:underline;text-decoration-color:color-mix(in oklab,currentColor 40%,transparent);text-underline-offset:3px}.foot__works a{white-space:nowrap}.foot__legal-link{color:inherit}.foot__legal-lines a:hover,.foot__legal-link:hover,.foot__works a:hover{text-decoration-color:var(--echo-accent);text-decoration-thickness:2px}.foot__nav{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(1rem,2vw,2rem)}.foot__menu{display:none}.foot__sr{position:absolute;width:1px;height:1px;margin:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.foot__menu .echo-accordion__trigger{padding-inline:0}.foot__menu .echo-accordion__panel-inner{padding:0 0 var(--echo-space-6)}.foot__menu-links{display:grid;margin:0;padding:0;list-style:none}.foot__menu-links a{display:flex;align-items:center;min-height:40px;color:var(--echo-text);text-decoration:none}@media (pointer:coarse){.foot__menu-links a{min-height:44px}}.foot__title{margin:0 0 var(--echo-space-8);font-size:var(--echo-text-sm);color:var(--echo-text-dim)}.foot__col-links ul{display:grid;gap:var(--echo-space-5);margin:0;padding:0;list-style:none}.foot__col-links a{display:inline-flex;align-items:center;min-height:24px;color:var(--echo-text);text-decoration:none}.foot__col-links a:hover,.foot__credits a:hover{color:var(--echo-text);text-decoration:underline;text-decoration-color:var(--echo-accent);text-decoration-thickness:2px;text-underline-offset:4px}.foot__legal{display:flex;flex-wrap:wrap;align-items:center;gap:var(--echo-space-4) var(--echo-space-8);margin-top:clamp(2.5rem,5vw,4rem);padding-top:1.25rem;box-shadow:inset 0 1px 0 var(--echo-seam);font-size:var(--echo-text-xs);color:var(--echo-text-dim)}.foot__legal-lines{display:flex;flex-wrap:wrap;gap:.35rem 1.5rem;margin:0 auto 0 0}.foot__legal-link{display:inline-flex;align-items:center;min-height:24px}.foot__credits[open]{flex-basis:100%;order:3}.foot__credits summary{display:inline-flex;align-items:center;min-height:24px;cursor:pointer;text-decoration:underline;text-decoration-color:color-mix(in oklab,currentColor 45%,transparent);text-underline-offset:3px;list-style:none}.foot__credits summary::-webkit-details-marker{display:none}.foot__credits ul{columns:22rem 2;column-gap:2rem;margin:var(--echo-space-4) 0 0;padding:0;list-style:none;line-height:1.7}.foot__credits a{color:var(--echo-text);text-underline-offset:2px}@media (pointer:coarse){.foot__credits summary,.foot__legal-link{min-height:44px}.foot__legal-link{min-width:44px;justify-content:center}}.foot__pile{position:relative;height:clamp(180px,22vw,300px)}.foot__stop{--guide-size:96px;position:absolute;left:50%;bottom:0;translate:-50% 0}.foot__flat{position:absolute;inset:auto 0 0;display:flex;justify-content:center;align-items:flex-end;gap:0;pointer-events:none}.foot__flat>span{margin-inline:-6px;translate:0 calc(var(--lift) * -1)}@media (max-width:34rem){.foot__flat>span:nth-child(n+5){display:none}}@media (max-width:21rem){.foot__flat>span:nth-child(n+4){display:none}}:root[data-echo3d] .foot__flat{visibility:hidden}@media (forced-colors:active){.foot__light{display:none}}.foot a:focus-visible,.home a:focus-visible,.support a:focus-visible{outline:2px solid var(--echo-accent-ink,var(--echo-accent-glow));outline-offset:3px;border-radius:3px}.foot__col-links a,.letter__links a,.objects__name{display:inline-flex;align-items:center;min-width:24px;min-height:24px}.objects__open a{position:relative}.objects__open a:after{content:"";position:absolute;top:50%;left:50%;width:max(100%,24px);height:max(100%,24px);transform:translate(-50%,-50%)}@media (pointer:coarse){.foot__col-links a,.letter__links a,.objects__name{min-width:44px;min-height:44px}.foot__col-links ul{gap:0}.objects__open a:after{width:max(100%,44px);height:44px}.support__other p{line-height:2.75}}@media (max-width:64rem){.foot__nav,.foot__works{display:none}.foot__menu{display:block}.foot__legal{margin-top:var(--echo-space-8);padding-top:0;box-shadow:none}.foot__legal-lines{flex-basis:100%}.objects__grid{grid-template-columns:repeat(2,minmax(0,1fr))}.objects__cell:nth-child(n){--seam-l:0;--seam-t:0}.objects__cell:nth-child(2n){--seam-l:1}.objects__cell:nth-child(n+3){--seam-t:1}}@media (max-width:56.25rem){.letter__stop{--guide-size:68px}}@media (max-width:40rem){.objects__grid{grid-template-columns:minmax(0,1fr)}.objects__stop{--guide-size:60px}.objects__cell:nth-child(n){--seam-l:0;--seam-t:0}.objects__cell:nth-child(n+2){--seam-t:1}.ways__seeds{grid-template-columns:minmax(0,1fr)}}:root[data-drawn] .foot__panel{background:var(--echo-surface);box-shadow:inset 0 0 0 var(--echo-line-width) var(--echo-line)}