* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 6rem; }
body { margin: 0; overflow-x: hidden; color: var(--text); background: var(--page); font-family: Inter, "Segoe UI", "Helvetica Neue", Arial, sans-serif; line-height: 1.5; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
button:focus-visible, a:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 36%, transparent); outline-offset: 4px; }
::selection { color: var(--surface); background: var(--accent); }

.site-skip { position: fixed; z-index: 1000; top: 1rem; left: 1rem; padding: .7rem 1rem; border-radius: .4rem; color: var(--surface); background: var(--text); transform: translateY(-200%); }
.site-skip:focus { transform: none; }
.site-header { position: fixed; z-index: 100; top: 0; left: 0; right: 0; height: 5.5rem; display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding: 0 clamp(1.2rem, 5vw, 5rem); border-bottom: 1px solid transparent; transition: height .25s ease, background .25s ease, border-color .25s ease, box-shadow .25s ease; }
.site-header.is-scrolled { height: 4.5rem; border-color: color-mix(in srgb, var(--border) 75%, transparent); background: color-mix(in srgb, var(--page) 88%, transparent); box-shadow: 0 8px 32px var(--shadow-color); backdrop-filter: blur(18px); }
.site-brand { display: flex; align-items: center; gap: .75rem; text-decoration: none; }
.site-brand__mark { position: relative; display: grid; place-items: center; width: 2.65rem; aspect-ratio: 1; overflow: hidden; border: 1px solid color-mix(in srgb, var(--gold) 55%, var(--border)); border-radius: 50%; background: color-mix(in srgb, var(--accent) 8%, var(--surface)); }
.site-brand__mark::before, .site-brand__mark::after, .site-brand__mark i { content: ""; position: absolute; width: 53%; aspect-ratio: 1; border-radius: 50%; border: 1.5px solid var(--accent); opacity: .8; }
.site-brand__mark::before { top: 16%; left: 23%; }.site-brand__mark::after { left: 12%; bottom: 12%; border-color: var(--sage); }.site-brand__mark i { right: 12%; bottom: 12%; border-color: var(--gold); }
.site-brand__mark i::after { content: ""; position: absolute; width: 34%; aspect-ratio: 1; top: -40%; left: -40%; border-radius: 50%; background: var(--gold); box-shadow: 0 0 12px color-mix(in srgb, var(--gold) 68%, transparent); }
.site-brand > span:last-child { display: grid; gap: .08rem; }.site-brand b { font: 800 .87rem/1 Manrope, Inter, sans-serif; letter-spacing: .1em; }.site-brand small { color: var(--text-2); font: 650 .57rem/1.2 "IBM Plex Mono", Consolas, monospace; letter-spacing: .075em; text-transform: uppercase; }
.site-nav { display: flex; align-items: center; gap: clamp(1rem, 2.1vw, 2.4rem); margin-left: auto; }
.site-nav a { position: relative; color: var(--text-2); font-size: .76rem; font-weight: 700; text-decoration: none; }
.site-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -.42rem; height: 2px; background: var(--accent); transition: right .22s ease; }.site-nav a:hover { color: var(--text); }.site-nav a:hover::after { right: 0; }
.site-header__actions { display: flex; align-items: center; gap: .5rem; }.site-theme { display: flex; align-items: center; gap: .45rem; min-height: 2.5rem; padding: .5rem .7rem; border: 1px solid var(--border); border-radius: 999px; color: var(--text-2); background: color-mix(in srgb, var(--surface) 78%, transparent); cursor: pointer; }.site-theme span { color: var(--accent); font-size: 1.1rem; }.site-theme small { font: 700 .6rem/1 "IBM Plex Mono", Consolas, monospace; letter-spacing: .07em; text-transform: uppercase; }.site-theme:hover { border-color: var(--accent); color: var(--text); }
.site-menu { display: none; width: 2.5rem; aspect-ratio: 1; border: 1px solid var(--border); border-radius: 50%; background: var(--surface); cursor: pointer; }.site-menu span { display: block; width: 1rem; height: 1.5px; margin: .25rem auto; background: var(--text); transition: .2s ease; }

.site-hero { position: relative; min-height: min(62rem, 100svh); display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(25rem, .92fr); align-items: center; gap: clamp(2rem, 6vw, 7rem); padding: clamp(8.5rem, 15vh, 11rem) clamp(1.2rem, 7vw, 8rem) clamp(6rem, 11vh, 8rem); overflow: hidden; }
.site-hero::before { content: ""; position: absolute; z-index: -2; inset: 0; background-image: linear-gradient(color-mix(in srgb, var(--text) 3.5%, transparent) 1px, transparent 1px), linear-gradient(90deg, color-mix(in srgb, var(--text) 3.5%, transparent) 1px, transparent 1px); background-size: 5rem 5rem; mask-image: linear-gradient(to bottom, black, transparent 80%); }
.site-hero::after { content: ""; position: absolute; z-index: -1; width: min(65vw, 64rem); aspect-ratio: 1; right: -22vw; top: -20vw; border: 1px solid color-mix(in srgb, var(--accent) 18%, transparent); border-radius: 50%; box-shadow: 0 0 0 8rem color-mix(in srgb, var(--accent) 2%, transparent), 0 0 0 16rem color-mix(in srgb, var(--gold) 1.5%, transparent); }
.site-eyebrow, .site-kicker { color: var(--accent); font: 750 clamp(.65rem, .8vw, .76rem)/1.3 "IBM Plex Mono", Consolas, monospace; letter-spacing: .11em; text-transform: uppercase; }
.site-eyebrow { display: flex; align-items: center; gap: .75rem; margin: 0 0 1.6rem; }.site-eyebrow::before { content: ""; width: 2.2rem; height: 2px; background: var(--gold); }
.site-hero h1 { margin: 0; max-width: 10ch; font: 700 clamp(4.3rem, 8.4vw, 9.3rem)/.78 Manrope, Inter, sans-serif; letter-spacing: -.075em; }
.site-hero h1 em { color: var(--accent); font-style: normal; }
.site-hero__definition { max-width: 46rem; margin: clamp(2rem, 4vh, 3rem) 0 0; color: var(--text-2); font-size: clamp(1rem, 1.45vw, 1.38rem); line-height: 1.55; }
.site-hero__thesis { display: flex; align-items: stretch; gap: 1rem; margin: 1.7rem 0 0; }.site-hero__thesis span { width: .28rem; border-radius: 99px; background: var(--gold); }.site-hero__thesis strong { font-size: clamp(1rem, 1.5vw, 1.4rem); line-height: 1.4; }
.site-hero__actions { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 2.2rem; }
.site-button { display: inline-flex; align-items: center; justify-content: space-between; gap: 1.5rem; min-width: 12rem; padding: .9rem 1rem; border: 1px solid var(--border); border-radius: .5rem; color: var(--text); background: color-mix(in srgb, var(--surface) 65%, transparent); font-size: .76rem; font-weight: 750; text-decoration: none; transition: .22s ease; }.site-button span { font-size: 1.05rem; }.site-button:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: 0 9px 24px var(--shadow-color); }.site-button--primary { color: var(--surface); border-color: var(--accent); background: var(--accent); }.site-button--primary:hover { color: var(--surface); background: var(--accent-hover); }
.site-hero__visual { position: relative; z-index: 1; margin: 0; }
.site-hero__visual::before { content: ""; position: absolute; inset: 8% -4% -4% 8%; z-index: -1; border: 1px solid var(--border); border-radius: 51% 49% 52% 48% / 47% 55% 45% 53%; transform: rotate(5deg); }
.site-hero__visual img { display: block; width: 100%; aspect-ratio: 3 / 2; object-fit: cover; border-radius: clamp(1rem, 2vw, 1.8rem); filter: saturate(.82) contrast(1.04); box-shadow: 0 34px 85px color-mix(in srgb, var(--text) 20%, transparent); }
.site-logo-art { transition: opacity .16s ease, filter .3s ease; }
.site-logo-art.is-switching { opacity: .28; }
.site-hero__visual figcaption { display: flex; justify-content: space-between; gap: 1rem; padding: .9rem .4rem 0; color: var(--text-2); font: 650 .57rem/1.3 "IBM Plex Mono", Consolas, monospace; letter-spacing: .08em; text-transform: uppercase; }
.site-hero__halo { position: absolute; z-index: 1; left: 50%; top: 36%; width: 38%; aspect-ratio: 1; border-radius: 50%; background: color-mix(in srgb, var(--gold) 13%, transparent); filter: blur(22px); transform: translate(-50%, -50%); pointer-events: none; }
.site-scroll-cue { position: absolute; left: clamp(1.2rem, 7vw, 8rem); bottom: 1.7rem; display: flex; align-items: center; gap: .75rem; color: var(--text-2); font: 650 .56rem/1 "IBM Plex Mono", Consolas, monospace; letter-spacing: .08em; text-transform: uppercase; }.site-scroll-cue i { display: block; width: 3rem; height: 1px; background: var(--border); position: relative; }.site-scroll-cue i::after { content: ""; position: absolute; left: 0; top: -2px; width: 5px; aspect-ratio: 1; border-radius: 50%; background: var(--gold); animation: site-travel 2.4s ease-in-out infinite; }
@keyframes site-travel { 50% { left: calc(100% - 5px); } }

.site-section { position: relative; padding: clamp(6rem, 11vw, 10rem) clamp(1.2rem, 7vw, 8rem); }
.site-section__label { display: flex; align-items: center; gap: .7rem; margin-bottom: clamp(3rem, 6vw, 6rem); color: var(--text-2); font: 700 .64rem/1.2 "IBM Plex Mono", Consolas, monospace; letter-spacing: .12em; text-transform: uppercase; }.site-section__label span { color: var(--accent); }.site-section__label::after { content: ""; flex: 1; height: 1px; margin-left: .5rem; background: var(--border); }
.site-intro-grid { display: grid; grid-template-columns: 1.08fr .92fr; align-items: start; gap: clamp(3rem, 8vw, 9rem); }.site-intro-grid h2 { margin: 0; max-width: 14ch; font: 650 clamp(3rem, 6.4vw, 7rem)/.96 Manrope, Inter, sans-serif; letter-spacing: -.06em; }.site-intro-grid p { margin: 0 0 1.4rem; color: var(--text-2); font-size: clamp(.95rem, 1.3vw, 1.2rem); line-height: 1.7; }.site-intro-grid .site-lede { color: var(--text); font-size: clamp(1.25rem, 2vw, 2rem); line-height: 1.45; letter-spacing: -.02em; }
.site-responsibility-ribbon { display: grid; grid-template-columns: repeat(7, 1fr); margin-top: clamp(4rem, 8vw, 8rem); border: 1px solid var(--border); border-radius: .8rem; overflow: hidden; background: var(--surface); box-shadow: 0 22px 55px var(--shadow-color); }.site-responsibility-ribbon span { position: relative; display: grid; align-content: end; min-height: clamp(8rem, 14vw, 13rem); padding: 1rem; border-right: 1px solid var(--border); font-size: clamp(.63rem, .85vw, .8rem); font-weight: 750; }.site-responsibility-ribbon span:last-child { border: 0; }.site-responsibility-ribbon span::before { content: ""; position: absolute; inset: 0 0 auto; height: .35rem; background: var(--ribbon-color); }.site-responsibility-ribbon b { align-self: start; color: var(--ribbon-color); font: 750 .62rem/1 "IBM Plex Mono", Consolas, monospace; }

.site-section--model { background: var(--surface-2); }
.site-model-heading, .site-invariants-heading, .site-sessions-heading { display: flex; align-items: end; justify-content: space-between; gap: 3rem; margin-bottom: clamp(2.5rem, 5vw, 5rem); }.site-model-heading h2, .site-invariants-heading h2, .site-sessions-heading h2 { margin: .5rem 0 0; font: 650 clamp(3rem, 6vw, 6.5rem)/.95 Manrope, Inter, sans-serif; letter-spacing: -.06em; }.site-model-heading h2 em { color: var(--accent); font-style: normal; }.site-model-heading > p, .site-invariants-heading > p, .site-sessions-heading > p { max-width: 36rem; margin: 0; color: var(--text-2); font-size: clamp(.9rem, 1.2vw, 1.08rem); line-height: 1.65; }
.site-model-shell { padding: clamp(1rem, 2vw, 2rem); border: 1px solid var(--border); border-radius: 1rem; background: var(--page); box-shadow: 0 28px 75px var(--shadow-color); }
.site-model-controls { display: flex; gap: .5rem; justify-content: flex-end; padding-bottom: 1rem; border-bottom: 1px solid var(--border); }.site-model-controls button { display: flex; align-items: center; gap: .5rem; padding: .55rem .75rem; border: 1px solid var(--border); border-radius: .4rem; color: var(--text-2); background: var(--surface); font-size: .7rem; font-weight: 700; cursor: pointer; }.site-model-controls button:hover, .site-model-controls button[aria-pressed="true"] { color: var(--surface); border-color: var(--accent); background: var(--accent); }.site-model-controls button i { width: .48rem; aspect-ratio: 1; border: 1px solid currentColor; border-radius: 50%; }
.site-model-grid { display: grid; grid-template-columns: minmax(29rem, 1.25fr) minmax(20rem, .75fr); gap: clamp(2rem, 5vw, 6rem); align-items: center; min-height: 40rem; padding: clamp(1.5rem, 4vw, 4rem); }
.site-layer-detail { min-height: 25rem; display: grid; align-content: center; padding: clamp(1.5rem, 3vw, 3rem); border-left: 1px solid var(--border); }.site-layer-detail__number { color: color-mix(in srgb, var(--accent) 28%, transparent); font: 800 clamp(4.5rem, 8vw, 8rem)/.8 Manrope, Inter, sans-serif; letter-spacing: -.07em; }.site-layer-detail__type { margin: 1.4rem 0 .5rem !important; color: var(--accent) !important; font: 750 .64rem/1.2 "IBM Plex Mono", Consolas, monospace !important; letter-spacing: .11em; text-transform: uppercase; }.site-layer-detail h3 { margin: 0 0 .8rem; font: 650 clamp(1.8rem, 3vw, 3.2rem)/1 Manrope, Inter, sans-serif; letter-spacing: -.04em; }.site-layer-detail > p { margin: 0; color: var(--text-2); font-size: .96rem; line-height: 1.6; }.site-layer-detail__tags { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: 1.2rem; }.site-layer-detail__tags small { padding: .35rem .5rem; border: 1px solid var(--border); border-radius: 999px; color: var(--text-2); font-size: .62rem; font-weight: 700; }

/* Shared EIEArchitecture presentation component, reskinned for the public site. */
.site-architecture .eie-stack { position: relative; display: grid; gap: .48rem; width: 100%; margin: auto; padding: 1.4rem; }
.site-architecture .eie-layer { --layer-color: var(--layer-ontology); position: relative; z-index: 2; display: grid; grid-template-columns: 2.6rem 1fr .8rem; align-items: center; gap: .8rem; min-height: 4.2rem; padding: .6rem 1rem; overflow: hidden; border: 1px solid var(--border); border-left: .34rem solid var(--layer-color); border-radius: .48rem; color: var(--text); background: var(--surface); text-align: left; cursor: pointer; transition: opacity .26s ease, transform .26s ease, box-shadow .26s ease; }.site-architecture .eie-layer::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, color-mix(in srgb, var(--layer-color) 13%, transparent), transparent 65%); pointer-events: none; }.site-architecture .eie-layer:hover { transform: translateX(.45rem); box-shadow: 0 9px 24px var(--shadow-color); }.site-architecture .eie-layer__number { z-index: 1; color: var(--layer-color); font: 800 .9rem/1 "IBM Plex Mono", Consolas, monospace; }.site-architecture .eie-layer__body { position: relative; z-index: 1; display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; }.site-architecture .eie-layer__body strong { font-size: .78rem; letter-spacing: .065em; text-transform: uppercase; }.site-architecture .eie-layer__body small { color: var(--text-2); font-size: .64rem; }.site-architecture .eie-layer__signal { position: relative; z-index: 1; width: .5rem; aspect-ratio: 1; border: 1.5px solid var(--layer-color); border-radius: 50%; }
.site-architecture .eie-layer--experience{--layer-color:var(--layer-experience)}.site-architecture .eie-layer--action{--layer-color:var(--layer-action)}.site-architecture .eie-layer--intelligence{--layer-color:var(--layer-intelligence)}.site-architecture .eie-layer--semantics{--layer-color:var(--layer-semantics)}.site-architecture .eie-layer--ontology{--layer-color:var(--layer-ontology)}.site-architecture .eie-layer--evidence{--layer-color:var(--layer-evidence)}.site-architecture .eie-layer--governance{--layer-color:var(--layer-governance)}
.site-architecture .eie-stack.has-selection .eie-layer:not(.is-selected) { opacity: .28; }.site-architecture .eie-layer.is-selected { transform: translateX(.7rem) scale(1.02); box-shadow: 0 15px 35px var(--shadow-color); }
.site-architecture .eie-governance-frame { position: absolute; z-index: 1; inset: .45rem; border: 2px solid transparent; border-radius: .8rem; opacity: 0; transition: .35s ease; pointer-events: none; }.site-architecture .eie-governance-frame span { position: absolute; right: 1rem; top: -.55rem; padding: 0 .5rem; color: var(--text); background: var(--page); font: 750 .55rem/1 "IBM Plex Mono", Consolas, monospace; letter-spacing: .1em; }.site-architecture .eie-stack.show-governance .eie-governance-frame { opacity: 1; border-color: var(--layer-governance); }
.site-architecture .eie-ai-overlay { position: absolute; z-index: 5; top: 29%; bottom: 13%; right: 2rem; width: 9rem; display: grid; grid-template-rows: repeat(4, 1fr); align-items: center; padding: .3rem .6rem .3rem 2.2rem; border: 1.5px solid var(--gold); border-radius: .75rem; background: color-mix(in srgb, var(--surface) 93%, transparent); box-shadow: 0 16px 38px color-mix(in srgb, var(--gold) 24%, transparent); opacity: 0; transform: translateY(1rem) scale(.96); pointer-events: none; transition: .5s ease; }.site-architecture .eie-ai-overlay::before { content: ""; position: absolute; left: .85rem; top: .7rem; bottom: .7rem; width: .26rem; border-radius: 99px; background: var(--gold); box-shadow: 0 0 14px color-mix(in srgb, var(--gold) 65%, transparent); }.site-architecture .eie-ai-overlay b { position: absolute; left: -.8rem; top: 50%; translate: 0 -50%; display: grid; place-items: center; width: 2.4rem; aspect-ratio: 1; border-radius: 50%; color: #202A2E; background: var(--gold); font-size: .72rem; }.site-architecture .eie-ai-overlay span { color: var(--text); font-size: .56rem; font-weight: 750; line-height: 1.1; }.site-architecture .eie-stack.show-ai .eie-ai-overlay { opacity: 1; transform: none; }
.site-principle { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 3rem; margin: clamp(5rem, 9vw, 9rem) 0 0; padding: clamp(2rem, 4vw, 4rem); border: 0; border-left: .4rem solid var(--gold); background: var(--surface); }.site-principle p { max-width: 54rem; margin: 0; color: var(--text-2); font: 500 clamp(1.35rem, 2.7vw, 2.7rem)/1.4 Manrope, Inter, sans-serif; letter-spacing: -.03em; }.site-principle p span { color: var(--text); }.site-principle strong { color: var(--gold); font: 700 clamp(2rem, 4vw, 4.5rem)/.95 Manrope, Inter, sans-serif; letter-spacing: -.05em; white-space: nowrap; }

.site-section--invariants { overflow: hidden; }.site-invariants-heading h2 { max-width: 13ch; }.site-invariant-layout { display: grid; grid-template-columns: minmax(15rem, .34fr) minmax(30rem, .66fr); gap: clamp(2rem, 6vw, 7rem); align-items: stretch; }
.site-invariant-list { display: grid; align-content: start; }.site-invariant-list button { display: grid; grid-template-columns: 2.5rem 1fr auto; align-items: center; gap: 1rem; min-height: 4.8rem; padding: .8rem 1rem; border: 0; border-bottom: 1px solid var(--border); color: var(--text-2); background: transparent; text-align: left; cursor: pointer; transition: .2s ease; }.site-invariant-list button b { color: var(--accent); font: 750 .62rem/1 "IBM Plex Mono", Consolas, monospace; }.site-invariant-list button span { font-size: clamp(1rem, 1.4vw, 1.3rem); font-weight: 700; }.site-invariant-list button i { font-style: normal; font-size: .66rem; font-weight: 700; }.site-invariant-list button:hover, .site-invariant-list button.is-active { padding-left: 1.6rem; color: var(--surface); background: var(--accent); }.site-invariant-list button.is-active b { color: var(--gold); }
.site-invariant-detail { min-height: 34rem; display: grid; align-content: center; padding: clamp(2rem, 5vw, 5rem); border: 1px solid var(--border); border-radius: .8rem; background: var(--surface); box-shadow: 0 28px 75px var(--shadow-color); }.site-invariant-detail h3 { max-width: 18ch; margin: .6rem 0 2.5rem; font: 650 clamp(2rem, 3.8vw, 4rem)/1 Manrope, Inter, sans-serif; letter-spacing: -.05em; }.site-invariant-detail > p:last-child { max-width: 46rem; margin: 2rem 0 0; color: var(--text-2); }.site-invariant-flow { display: grid; grid-template-columns: 1fr auto 1.1fr; align-items: center; gap: 1.5rem; }.site-invariant-flow > div { display: grid; gap: .45rem; }.site-invariant-flow > div span { padding: .7rem .8rem; border: 1px solid var(--border); border-radius: .4rem; color: var(--text-2); background: var(--page); font-size: .76rem; font-weight: 650; }.site-invariant-flow > i { color: var(--gold); font-size: 2rem; font-style: normal; }.site-invariant-flow > strong { display: grid; gap: .5rem; padding: 1.2rem; border: 1px solid var(--accent); border-radius: .5rem; color: var(--accent); background: color-mix(in srgb, var(--accent) 6%, var(--surface)); font-size: clamp(1.1rem, 2vw, 1.8rem); line-height: 1; }.site-invariant-flow > strong small { color: var(--text-2); font: 750 .6rem/1.2 "IBM Plex Mono", Consolas, monospace; letter-spacing: .1em; text-transform: uppercase; }

.site-section--why { color: var(--text); background: var(--surface); }.site-section--why .site-section__label, .site-section--why .site-why-copy { color: var(--text-2); }.site-section--why .site-section__label::after { background: var(--border); }.site-section--why .site-kicker { color: var(--gold); }.site-why-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: clamp(3rem, 8vw, 9rem); align-items: center; }.site-why-grid h2 { margin: .5rem 0; font: 650 clamp(2.6rem, 5.3vw, 5.8rem)/.97 Manrope, Inter, sans-serif; letter-spacing: -.06em; }.site-why-grid .site-why-grid__answer { color: var(--gold); }.site-why-copy p { margin: 0 0 1rem; font-size: clamp(1rem, 1.45vw, 1.35rem); line-height: 1.6; }.site-control-chain { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; margin-top: 2rem; padding-top: 1.3rem; border-top: 1px solid var(--border); }.site-control-chain span { font: 700 .63rem/1 "IBM Plex Mono", Consolas, monospace; letter-spacing: .07em; text-transform: uppercase; }.site-control-chain i { color: var(--gold); font-style: normal; }
.site-manifesto { margin-top: clamp(5rem, 10vw, 10rem); padding-top: clamp(3rem, 6vw, 6rem); border-top: 1px solid var(--border); }.site-manifesto p, .site-manifesto strong { display: block; margin: 0; font: 650 clamp(3rem, 7.2vw, 8rem)/.9 Manrope, Inter, sans-serif; letter-spacing: -.07em; }.site-manifesto p { color: color-mix(in srgb, var(--text) 30%, transparent); }.site-manifesto strong { color: var(--text); }
[data-theme="dark"] .site-section--why { color: #F1EFE7; background: #111615; }
[data-theme="dark"] .site-layer-detail__number { color: color-mix(in srgb, var(--accent) 62%, transparent); }

.site-sessions-heading h2 { max-width: 13ch; }.site-session-card { position: relative; padding: clamp(1.5rem, 3vw, 3rem); overflow: hidden; border: 1px solid var(--border); border-radius: .9rem; background: var(--surface); box-shadow: 0 28px 75px var(--shadow-color); }.site-session-card::before { content: ""; position: absolute; width: 34rem; aspect-ratio: 1; right: -16rem; top: -18rem; border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent); border-radius: 50%; box-shadow: 0 0 0 5rem color-mix(in srgb, var(--sage) 4%, transparent), 0 0 0 10rem color-mix(in srgb, var(--gold) 3%, transparent); }.site-session-card__meta { display: flex; justify-content: space-between; gap: 1rem; padding-bottom: 1.1rem; border-bottom: 1px solid var(--border); color: var(--text-2); font: 700 .6rem/1.2 "IBM Plex Mono", Consolas, monospace; letter-spacing: .1em; text-transform: uppercase; }.site-session-card__body { position: relative; display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 3rem; padding: clamp(2.5rem, 6vw, 6rem) 0; }.site-session-card__body > div { max-width: 55rem; }.site-session-card__body h3 { margin: .5rem 0 1.2rem; font: 650 clamp(2.6rem, 5.5vw, 6rem)/.95 Manrope, Inter, sans-serif; letter-spacing: -.06em; }.site-session-card__body p:last-child { max-width: 46rem; margin: 0; color: var(--text-2); font-size: clamp(.9rem, 1.2vw, 1.1rem); line-height: 1.65; }.site-session-card__body > a { display: flex; align-items: center; gap: 1.5rem; padding: 1rem 0; border-bottom: 2px solid var(--accent); color: var(--accent); font-size: .78rem; font-weight: 800; text-decoration: none; white-space: nowrap; }.site-session-card__body > a span { font-size: 1.3rem; transition: transform .2s ease; }.site-session-card__body > a:hover span { transform: translate(.25rem, -.25rem); }.site-session-card__topics { display: flex; flex-wrap: wrap; gap: .45rem; padding-top: 1.1rem; border-top: 1px solid var(--border); }.site-session-card__topics span { padding: .38rem .6rem; border: 1px solid var(--border); border-radius: 999px; color: var(--text-2); font-size: .62rem; font-weight: 700; }
.site-session-roadmap { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem; margin-top: 2rem; }.site-session-roadmap p { margin: 0 1rem 0 0; color: var(--text-2); font: 700 .6rem/1 "IBM Plex Mono", Consolas, monospace; letter-spacing: .1em; text-transform: uppercase; }.site-session-roadmap span { padding: .5rem .7rem; border-radius: .35rem; color: var(--text-2); background: var(--surface-2); font-size: .68rem; font-weight: 700; }

.site-stewardship { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(20rem, .85fr); gap: clamp(3rem, 8vw, 9rem); padding: clamp(4rem, 8vw, 7rem) clamp(1.2rem, 7vw, 8rem); border-top: 1px solid var(--border); background: var(--surface); }.site-stewardship__status h2 { max-width: 22ch; margin: .65rem 0 1.4rem; font: 650 clamp(2rem, 3.4vw, 3.8rem)/1.04 Manrope, Inter, sans-serif; letter-spacing: -.05em; }.site-stewardship__status > p:last-child { max-width: 52rem; margin: 0; color: var(--text-2); font-size: clamp(.9rem, 1.2vw, 1.08rem); line-height: 1.65; }.site-stewardship__provenance { display: grid; align-content: center; padding-left: clamp(1.5rem, 4vw, 4rem); border-left: 1px solid var(--border); }.site-stewardship__provenance p { margin: 0 0 .8rem; color: var(--text-2); font-size: .88rem; line-height: 1.6; }.site-stewardship__provenance strong { color: var(--text); }
.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 3rem; padding: 2rem clamp(1.2rem, 7vw, 8rem); border-top: 1px solid var(--border); }.site-brand--footer .site-brand__mark { width: 2.25rem; }.site-brand--footer b { letter-spacing: 0; }.site-footer__details { display: grid; gap: .35rem; text-align: right; }.site-footer__details p { margin: 0; color: var(--text-2); font: 650 .62rem/1.4 "IBM Plex Mono", Consolas, monospace; }.site-footer__details a { color: var(--text); font-weight: 750; text-decoration-color: var(--gold); text-underline-offset: .25rem; }.site-footer__details a:hover { color: var(--accent); }
.site-reveal { opacity: 0; transform: translateY(1.5rem); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.8,.2,1); }.site-reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 1050px) {
  .site-hero { grid-template-columns: 1fr .8fr; }.site-hero h1 { font-size: clamp(4rem, 9.8vw, 7rem); }
  .site-model-grid { grid-template-columns: 1fr; min-height: auto; }.site-layer-detail { min-height: 18rem; border-top: 1px solid var(--border); border-left: 0; }.site-layer-detail__number { font-size: 4.5rem; }
  .site-principle { grid-template-columns: 1fr; }.site-principle strong { white-space: normal; }
  .site-invariant-layout { grid-template-columns: .38fr .62fr; gap: 2rem; }.site-invariant-flow { grid-template-columns: 1fr; }.site-invariant-flow > i { rotate: 90deg; justify-self: center; }
}

@media (max-width: 800px) {
  .site-header { height: 4.5rem; padding-inline: 1rem; }.site-brand small { display: none; }.site-menu { display: block; }.site-theme small { display: none; }.site-nav { position: absolute; top: calc(100% + .5rem); left: 1rem; right: 1rem; display: grid; gap: 0; padding: .5rem; border: 1px solid var(--border); border-radius: .7rem; background: var(--surface); box-shadow: 0 18px 45px var(--shadow-color); opacity: 0; transform: translateY(-.5rem); visibility: hidden; transition: .2s ease; }.site-nav a { padding: .8rem; border-bottom: 1px solid var(--border); }.site-nav a:last-child { border: 0; }.site-header.is-menu-open .site-nav { opacity: 1; transform: none; visibility: visible; }.site-header.is-menu-open .site-menu span:first-child { transform: translateY(2.8px) rotate(45deg); }.site-header.is-menu-open .site-menu span:last-child { transform: translateY(-2.8px) rotate(-45deg); }
  .site-hero { min-height: auto; grid-template-columns: 1fr; padding: 7rem 1rem 5rem; }.site-hero__visual { max-width: 38rem; }.site-scroll-cue { display: none; }
  .site-section { padding: 5rem 1rem; }.site-section__label { margin-bottom: 2.8rem; }.site-intro-grid, .site-why-grid { grid-template-columns: 1fr; gap: 2.4rem; }.site-intro-grid h2 { font-size: clamp(2.7rem, 12vw, 5rem); }.site-responsibility-ribbon { grid-template-columns: 1fr; }.site-responsibility-ribbon span { min-height: 3.6rem; border-right: 0; border-bottom: 1px solid var(--border); }.site-responsibility-ribbon span::before { inset: 0 auto 0 0; width: .35rem; height: auto; }
  .site-model-heading, .site-invariants-heading, .site-sessions-heading { display: grid; align-items: start; gap: 1.5rem; }.site-model-heading h2, .site-invariants-heading h2, .site-sessions-heading h2 { font-size: clamp(2.8rem, 12vw, 5rem); }.site-model-controls { justify-content: flex-start; flex-wrap: wrap; }.site-model-grid { padding: .8rem 0; }.site-architecture .eie-stack { padding-inline: .4rem; }.site-architecture .eie-layer__body small { display: none; }.site-architecture .eie-ai-overlay { right: .7rem; }
  .site-invariant-layout { grid-template-columns: 1fr; }.site-invariant-list { grid-template-columns: 1fr 1fr; }.site-invariant-list button { grid-template-columns: 2rem 1fr; }.site-invariant-list button i { display: none; }.site-invariant-detail { min-height: auto; }.site-invariant-flow { grid-template-columns: 1fr auto 1.1fr; }.site-invariant-flow > i { rotate: 0deg; }
  .site-session-card__body { grid-template-columns: 1fr; }.site-session-card__body > a { justify-self: start; }.site-stewardship { grid-template-columns: 1fr; gap: 2.5rem; }.site-stewardship__provenance { padding: 2rem 0 0; border-top: 1px solid var(--border); border-left: 0; }.site-footer { align-items: flex-start; flex-direction: column; }.site-footer__details { text-align: left; }
}

@media (max-width: 520px) {
  .site-hero h1 { font-size: clamp(3.4rem, 18vw, 5.2rem); }.site-hero__actions { display: grid; }.site-button { width: 100%; }.site-hero__visual figcaption { display: none; }
  .site-model-shell { padding: .6rem; }.site-model-controls button { font-size: .62rem; }.site-architecture .eie-layer { min-height: 3.65rem; grid-template-columns: 2rem 1fr .6rem; padding-inline: .65rem; }.site-architecture .eie-layer__body strong { font-size: .68rem; }.site-architecture .eie-ai-overlay { width: 7.5rem; padding-left: 1.7rem; }.site-architecture .eie-ai-overlay span { font-size: .5rem; }.site-layer-detail { padding-inline: .7rem; }.site-principle { padding: 1.5rem; }.site-principle p { font-size: 1.3rem; }
  .site-invariant-list { grid-template-columns: 1fr; }.site-invariant-detail { padding: 1.5rem; }.site-invariant-flow { grid-template-columns: 1fr; }.site-invariant-flow > i { rotate: 90deg; justify-self: center; }.site-session-card__meta { display: grid; }.site-manifesto p, .site-manifesto strong { font-size: clamp(2.6rem, 14vw, 4.8rem); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .site-reveal { opacity: 1; transform: none; }
}