:root {
  --obs: #030b14;
  --obs-2: #07131f;
  --ice: #f4f7f8;
  --paper: #ffffff;
  --ink: #091017;
  --graph: #5d6a72;
  --line: #d7e0e4;
  --cyan: #77ddff;
  --cyan-dark: #007f9b;
  --blue: #1167ff;
  --shell: 1180px;
  --sans: "Inter Tight", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--obs); }
body { margin: 0; color: var(--ink); background: var(--ice); font-family: var(--sans); -webkit-font-smoothing: antialiased; }
body.dialog-open { overflow: hidden; }
h1, h2 { font-family: var(--sans); font-weight: 700; font-style: normal; letter-spacing: -.06em; text-transform: uppercase; }
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }
button { cursor: pointer; }
img { max-width: 100%; }
.shell { width: min(var(--shell), calc(100% - 56px)); margin-inline: auto; }
.scene-dark { background: var(--obs); color: var(--ice); }
.scene-light { background: var(--ice); color: var(--ink); }
.scene-paper { background: var(--paper); color: var(--ink); }
.skip-link { position: fixed; z-index: 9999; top: 12px; left: 12px; transform: translateY(-150%); padding: 10px 14px; color: white; background: var(--blue); }
.skip-link:focus { transform: translateY(0); }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 4px; }

/* Header */
.site-header { position: relative; z-index: 100; height: 78px; border-bottom: 1px solid rgba(119,221,255,.14); }
.home-top { position: absolute; z-index: 100; top: 0; left: 0; right: 0; }
.site-header-dark { color: var(--ice); background: rgba(3,11,20,.92); }
.site-header-light { color: var(--ink); background: rgba(244,247,248,.94); border-bottom-color: rgba(9,16,23,.1); }
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: flex; flex-direction: column; align-items: flex-start; gap: 5px; flex: 0 0 auto; }
.brand img { display: block; width: 216px; height: auto; filter: none; }
.site-header-light .brand img { filter: none; }
.brand span { font: 600 10px/1.05 var(--sans); letter-spacing: .2em; text-transform: uppercase; opacity: .72; }
.site-nav { display: flex; align-items: center; gap: 23px; font-size: 13px; font-weight: 600; }
.site-nav a, .site-nav button { transition: color .18s ease, border-color .18s ease, opacity .18s ease; }
.site-nav > a:not(.client-link):hover { color: var(--cyan); }
.client-link { padding-bottom: 4px; border-bottom: 1px solid rgba(119,221,255,.42); }
.nav-cta { border: 1px solid rgba(119,221,255,.42); padding: 11px 14px; color: var(--ice); background: transparent; font-size: 12px; font-weight: 700; }
.site-header-light .nav-cta { color: var(--ink); }
.nav-cta:hover { border-color: var(--cyan); color: var(--cyan); }
.menu-toggle { display: none; border: 0; color: inherit; background: transparent; font: 600 11px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; }

/* Shared */
.eyebrow { margin: 0 0 24px; color: var(--cyan); font: 600 12px/1.35 var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.eyebrow-dark { color: var(--cyan-dark); }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: 0 20px; border: 1px solid transparent; font-size: 13px; font-weight: 700; transition: transform .18s ease, background .18s ease, border-color .18s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: white; background: var(--blue); }
.button-primary:hover { background: #0d59df; }
.button-ghost { color: var(--ice); background: transparent; border-color: rgba(244,247,248,.36); }
.button-ghost:hover { border-color: var(--cyan); }
.button-dark { color: white; background: var(--ink); }
.text-link { display: inline-block; margin-top: 30px; padding-bottom: 7px; color: var(--cyan); border-bottom: 1px solid rgba(119,221,255,.38); font: 600 11px/1.2 var(--mono); letter-spacing: .1em; text-transform: uppercase; }

/* Contextual depth: only where a real related destination exists. */
.operation-section, .architecture-section, .result-section { position: relative; }
.context-rail { position: absolute; z-index: 4; top: 50%; right: 0; width: 44px; min-height: 238px; display: inline-flex; align-items: center; justify-content: center; gap: 15px; padding: 18px 0; transform: translateY(-50%); writing-mode: vertical-rl; font: 600 9px/1 var(--mono); letter-spacing: .13em; text-transform: uppercase; transition: color .18s ease, background .18s ease, border-color .18s ease; }
.context-rail span { color: var(--blue); font-size: 14px; }
.context-rail-light { color: #31505d; background: rgba(244,247,248,.9); border: 1px solid rgba(9,16,23,.16); border-right: 0; }
.context-rail-light:hover { color: var(--ink); background: white; border-color: rgba(17,103,255,.45); }
.context-rail-dark { color: #a7bac4; background: rgba(3,11,20,.9); border: 1px solid rgba(119,221,255,.24); border-right: 0; }
.context-rail-dark:hover { color: var(--cyan); background: var(--obs-2); border-color: rgba(119,221,255,.55); }

/* Display headlines: one uppercase voice, matching RGH COGNITIVE LAYER. */
.hero-copy h1,
.section-intro h2,
.difference-section h2,
.architecture-copy h2,
.result-section h2,
.identity-inner h2,
.internal-hero h1,
.contact-dialog h2,
.content-section-heading h2,
.not-found h1 { text-transform: uppercase; }

/* Hero */
.hero-section { min-height: 100svh; padding: 150px 0 0; display: grid; grid-template-rows: 1fr auto; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 78px; padding-bottom: 54px; }
.hero-copy h1 { margin: 0; max-width: 690px; font: 700 clamp(76px, 8.7vw, 126px)/.85 var(--sans); letter-spacing: -.06em; }
.hero-thesis { margin: 28px 0 0; font: 600 clamp(28px, 2.6vw, 38px)/1.02 var(--sans); letter-spacing: -.045em; color: #dfe8ec; }
.hero-support { max-width: 600px; margin: 22px 0 0; color: #9fb0bc; font-size: 18px; line-height: 1.55; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.process-signature { min-height: 68px; display: flex; align-items: center; justify-content: center; gap: 19px; border-top: 1px solid rgba(119,221,255,.16); color: var(--cyan); font: 600 11px/1 var(--mono); letter-spacing: .13em; }
.process-signature i { color: rgba(244,247,248,.34); font-style: normal; }
.hero-signal { position: relative; width: min(460px, 38vw); aspect-ratio: 1; margin-left: auto; padding: 0; border: 0; color: inherit; background: transparent; perspective: 900px; transform-style: preserve-3d; }
.signal-link .signal-core, .signal-link .signal-node,
.cognitive-link .cognitive-core, .cognitive-link .cognitive-node { transition: border-color .28s ease, box-shadow .28s ease, background .28s ease, opacity .28s ease, transform .28s ease; }
.signal-link .signal-ring, .cognitive-link .cognitive-ring { transition: transform .74s cubic-bezier(.2,.72,.2,1), border-color .28s ease, box-shadow .28s ease, -webkit-mask-image .28s ease, mask-image .28s ease; }
.signal-link:hover .signal-ring, .signal-link:focus-visible .signal-ring,
.cognitive-link:hover .cognitive-ring, .cognitive-link:focus-visible .cognitive-ring { border-color: rgba(119,221,255,.58); box-shadow: 0 0 34px rgba(17,103,255,.11); }
.signal-link:hover .signal-core, .signal-link:focus-visible .signal-core { box-shadow: inset -24px -20px 38px rgba(0,0,0,.78), inset 12px 10px 25px rgba(119,221,255,.1), 0 0 78px rgba(17,103,255,.3); }
.signal-link:hover .signal-node, .signal-link:focus-visible .signal-node, .signal-link.is-orbiting .signal-node,
.cognitive-link:hover .cognitive-node, .cognitive-link:focus-visible .cognitive-node, .cognitive-link.is-orbiting .cognitive-node { opacity: 1; box-shadow: 0 0 0 9px rgba(119,221,255,.12), 0 0 24px rgba(119,221,255,.25); }
.signal-ring { position: absolute; inset: 50%; border: 1px solid rgba(119,221,255,.22); border-radius: 50%; transform: translate(-50%,-50%); transform-style: preserve-3d; filter: drop-shadow(0 0 10px rgba(17,103,255,.1)); transition: transform .72s cubic-bezier(.2,.72,.2,1), border-color .28s ease, box-shadow .28s ease, -webkit-mask-image .28s ease, mask-image .28s ease; }
.ring-one { width: 100%; height: 100%; }
.ring-two { width: 73%; height: 73%; }
.ring-three { width: 46%; height: 46%; border-color: rgba(119,221,255,.34); }
.signal-link:hover .ring-one, .signal-link:focus-visible .ring-one, .signal-link.is-orbiting .ring-one { transform: translate(-50%,-50%) rotateX(67deg) rotateZ(-9deg); -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,.24), #000 72%); mask-image: linear-gradient(to bottom, rgba(0,0,0,.24), #000 72%); }
.signal-link:hover .ring-two, .signal-link:focus-visible .ring-two, .signal-link.is-orbiting .ring-two { transform: translate(-50%,-50%) rotateY(64deg) rotateZ(19deg); -webkit-mask-image: linear-gradient(to right, rgba(0,0,0,.22), #000 74%); mask-image: linear-gradient(to right, rgba(0,0,0,.22), #000 74%); }
.signal-link:hover .ring-three, .signal-link:focus-visible .ring-three, .signal-link.is-orbiting .ring-three { transform: translate(-50%,-50%) rotateX(54deg) rotateY(31deg) rotateZ(-16deg); border-color: rgba(119,221,255,.48); -webkit-mask-image: linear-gradient(150deg, rgba(0,0,0,.2), #000 72%); mask-image: linear-gradient(150deg, rgba(0,0,0,.2), #000 72%); }
.signal-axis { position: absolute; inset: 50%; background: rgba(119,221,255,.11); transform: translate(-50%,-50%); }
.axis-x { width: 100%; height: 1px; }
.axis-y { width: 1px; height: 100%; }
.signal-core { position: absolute; z-index: 3; top: 50%; left: 50%; width: 126px; height: 126px; transform: translate(-50%,-50%); display: grid; place-content: center; overflow: hidden; text-align: center; border: 1px solid rgba(119,221,255,.58); border-radius: 50%; background: radial-gradient(circle at 31% 27%, rgba(119,221,255,.3) 0, rgba(17,103,255,.18) 18%, rgba(3,11,20,.98) 58%, #01050a 100%); box-shadow: inset -24px -20px 38px rgba(0,0,0,.76), inset 12px 10px 25px rgba(119,221,255,.08), 0 0 60px rgba(17,103,255,.18); }
.signal-core::before, .cognitive-core::before { content: ""; position: absolute; z-index: 1; inset: 19%; border-top: 1px solid rgba(119,221,255,.32); border-bottom: 1px solid rgba(17,103,255,.18); border-radius: 50%; transform: rotate(-17deg) scaleY(.38); opacity: .78; }
.signal-core::after, .cognitive-core::after { content: ""; position: absolute; z-index: 1; top: 15%; left: 20%; width: 34%; aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle, rgba(255,255,255,.22), rgba(119,221,255,.06) 48%, transparent 72%); filter: blur(1px); }
.signal-core span, .signal-core strong, .cognitive-core span, .cognitive-core strong { position: relative; z-index: 2; }
.signal-core span { font: 500 9px/1.3 var(--mono); letter-spacing: .14em; color: #9bb2bd; }
.signal-core strong { margin-top: 5px; color: var(--cyan); font: 600 12px/1 var(--mono); letter-spacing: .12em; text-shadow: 0 0 14px rgba(119,221,255,.22); }
.signal-orbit-plane { position: absolute; z-index: 2; inset: 7%; border-radius: 50%; pointer-events: none; transform-style: preserve-3d; transition: transform .72s cubic-bezier(.2,.72,.2,1); }
.signal-orbit { position: absolute; inset: 0; border: 1px solid rgba(119,221,255,.28); border-radius: 50%; transform-style: preserve-3d; animation: signal-orbit 9s linear infinite; animation-play-state: paused; will-change: transform; filter: drop-shadow(0 0 13px rgba(17,103,255,.16)); }
.signal-link:hover .signal-orbit-plane, .signal-link:focus-visible .signal-orbit-plane, .signal-link.is-orbiting .signal-orbit-plane { transform: rotateX(62deg); }
.signal-link:hover .signal-orbit, .signal-link:focus-visible .signal-orbit, .signal-link.is-orbiting .signal-orbit { animation-play-state: running; -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,.2), #000 72%); mask-image: linear-gradient(to bottom, rgba(0,0,0,.2), #000 72%); }
.signal-node { position: absolute; width: 9px; height: 9px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 7px rgba(119,221,255,.08); }
.node-a { top: 1%; left: 50%; }
.node-b { right: 12%; top: 68%; background: var(--blue); }
.node-c { left: 15%; top: 27%; }
@keyframes signal-orbit { from { transform: rotateZ(0deg); } to { transform: rotateZ(360deg); } }

/* Operation */
.operation-section { padding: 120px 0 130px; }
.section-intro { max-width: var(--shell); }
.section-intro h2, .difference-section h2, .result-section h2 { max-width: 980px; margin: 0; font: 700 clamp(58px, 6.4vw, 92px)/.92 var(--sans); letter-spacing: -.055em; }
.section-intro h2 strong, .difference-section h2 strong { font-weight: 700; }
.section-intro > p:last-child { max-width: 760px; margin: 26px 0 0; color: var(--graph); font-size: 20px; line-height: 1.55; }
.proof-board { margin-top: 68px; border: 1px solid #cbd6db; background: var(--paper); }
.proof-heading { display: grid; grid-template-columns: 1fr .75fr; gap: 36px; align-items: end; padding: 32px 36px; border-bottom: 1px solid var(--line); }
.proof-heading span, .proof-flow span { color: var(--cyan-dark); font: 600 11px/1.3 var(--mono); letter-spacing: .1em; }
.proof-heading h3 { margin: 10px 0 0; font: 700 42px/1 var(--sans); letter-spacing: -.04em; }
.proof-heading p { margin: 0; color: var(--graph); font-size: 16px; line-height: 1.5; }
.proof-flow { display: grid; grid-template-columns: repeat(5, 1fr); }
.proof-flow article { min-height: 182px; padding: 28px 22px; border-right: 1px solid var(--line); }
.proof-flow article:last-child { border-right: 0; }
.proof-flow strong { display: block; margin-top: 25px; font: 600 21px/1.1 var(--sans); letter-spacing: -.025em; }
.proof-flow small { display: block; margin-top: 10px; color: #74838b; font-size: 12px; line-height: 1.45; }
.proof-flow .proof-final { color: white; background: var(--obs); }
.proof-flow .proof-final span { color: var(--cyan); }
.proof-flow .proof-final small { color: #8fa1ac; }
.human-validation { display: grid; grid-template-columns: 250px 1fr; gap: 28px; align-items: center; padding: 18px 28px; color: var(--ice); background: var(--obs-2); border-top: 1px solid rgba(119,221,255,.18); }
.human-validation > span { color: var(--cyan); font: 600 10px/1.35 var(--mono); letter-spacing: .12em; }
.human-validation p { margin: 0; color: #c3d0d6; font-size: 14px; line-height: 1.45; }
.human-validation p strong { color: white; font-weight: 700; }
.proof-close { margin: 0; padding: 25px 36px; border-top: 1px solid var(--line); text-align: center; font: 600 24px/1.25 var(--sans); }

/* Difference */
.difference-section { padding: 120px 0; }
.difference-list { margin-top: 58px; border-top: 1px solid var(--line); }
.difference-list article { display: grid; grid-template-columns: 210px 260px 1fr; gap: 26px; align-items: baseline; padding: 29px 0; border-bottom: 1px solid var(--line); }
.difference-list span { color: #718088; font: 600 11px/1 var(--mono); letter-spacing: .12em; }
.difference-list strong { font: 700 38px/1 var(--sans); letter-spacing: -.04em; }
.difference-list p { margin: 0; color: var(--graph); font-size: 16px; }
.difference-list .difference-final { border-bottom: 2px solid var(--blue); }
.difference-list .difference-final span, .difference-list .difference-final strong { color: var(--blue); }
.difference-list .difference-final strong { font-size: 52px; }
.transition-line { margin: 48px 0 0; text-align: center; font: 600 clamp(30px,3.6vw,49px)/1.08 var(--sans); letter-spacing: -.04em; }

/* Architecture */
.architecture-section { padding: 120px 0 86px; }
.architecture-grid { display: grid; grid-template-columns: .92fr 1.08fr; gap: 84px; align-items: center; }
.architecture-copy h2 { margin: 0; font: 700 clamp(60px, 6.4vw, 88px)/.84 var(--sans); letter-spacing: -.06em; }
.architecture-description { max-width: 570px; margin: 28px 0 0; color: #9fb0bc; font-size: 18px; line-height: 1.55; }
.architecture-copy h3 { max-width: 580px; margin: 44px 0 0; color: var(--ice); font: 600 36px/1.08 var(--sans); letter-spacing: -.035em; }
.cognitive-plate { min-width: 0; }
.cognitive-field { position: relative; height: 430px; perspective: 980px; transform-style: preserve-3d; }
.cognitive-link { display: block; }
.cognitive-link:hover .cognitive-core, .cognitive-link:focus-visible .cognitive-core { box-shadow: inset -24px -20px 38px rgba(0,0,0,.8), inset 12px 10px 25px rgba(119,221,255,.1), 0 0 68px rgba(17,103,255,.28); }
.cognitive-ring { position: absolute; top: 50%; left: 50%; border: 1px solid rgba(119,221,255,.23); border-radius: 50%; transform: translate(-50%,-50%); transform-style: preserve-3d; filter: drop-shadow(0 0 10px rgba(17,103,255,.09)); transition: transform .76s cubic-bezier(.2,.72,.2,1), border-color .28s ease, box-shadow .28s ease, -webkit-mask-image .28s ease, mask-image .28s ease; }
.cognitive-a, .cognitive-orbit-outer { width: 420px; height: 420px; }
.cognitive-b, .cognitive-orbit-inner { width: 300px; height: 300px; }
.cognitive-c { width: 190px; height: 190px; border-color: rgba(119,221,255,.38); }
.cognitive-link:hover .cognitive-a, .cognitive-link:focus-visible .cognitive-a, .cognitive-link.is-orbiting .cognitive-a { transform: translate(-50%,-50%) rotateX(68deg) rotateZ(-11deg); -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,.2), #000 72%); mask-image: linear-gradient(to bottom, rgba(0,0,0,.2), #000 72%); }
.cognitive-link:hover .cognitive-b, .cognitive-link:focus-visible .cognitive-b, .cognitive-link.is-orbiting .cognitive-b { transform: translate(-50%,-50%) rotateY(65deg) rotateZ(17deg); -webkit-mask-image: linear-gradient(to right, rgba(0,0,0,.18), #000 73%); mask-image: linear-gradient(to right, rgba(0,0,0,.18), #000 73%); }
.cognitive-link:hover .cognitive-c, .cognitive-link:focus-visible .cognitive-c, .cognitive-link.is-orbiting .cognitive-c { transform: translate(-50%,-50%) rotateX(53deg) rotateY(34deg) rotateZ(-15deg); border-color: rgba(119,221,255,.48); -webkit-mask-image: linear-gradient(145deg, rgba(0,0,0,.18), #000 72%); mask-image: linear-gradient(145deg, rgba(0,0,0,.18), #000 72%); }
.cognitive-orbit-plane { position: absolute; z-index: 2; top: 50%; left: 50%; border-radius: 50%; pointer-events: none; transform: translate(-50%,-50%); transform-style: preserve-3d; transition: transform .76s cubic-bezier(.2,.72,.2,1); }
.cognitive-orbit { position: absolute; inset: 0; border: 1px solid rgba(119,221,255,.3); border-radius: 50%; transform-style: preserve-3d; will-change: transform; filter: drop-shadow(0 0 13px rgba(17,103,255,.14)); }
.cognitive-orbit-spin-outer { animation: cognitive-orbit 15s linear infinite; animation-play-state: paused; }
.cognitive-orbit-spin-inner { animation: cognitive-orbit-reverse 11s linear infinite; animation-play-state: paused; }
.cognitive-link:hover .cognitive-orbit-outer, .cognitive-link:focus-visible .cognitive-orbit-outer, .cognitive-link.is-orbiting .cognitive-orbit-outer { transform: translate(-50%,-50%) rotateX(66deg) rotateZ(-8deg); }
.cognitive-link:hover .cognitive-orbit-inner, .cognitive-link:focus-visible .cognitive-orbit-inner, .cognitive-link.is-orbiting .cognitive-orbit-inner { transform: translate(-50%,-50%) rotateY(64deg) rotateZ(16deg); }
.cognitive-link:hover .cognitive-orbit-spin-outer, .cognitive-link:focus-visible .cognitive-orbit-spin-outer, .cognitive-link.is-orbiting .cognitive-orbit-spin-outer { animation-play-state: running; -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,.18), #000 74%); mask-image: linear-gradient(to bottom, rgba(0,0,0,.18), #000 74%); }
.cognitive-link:hover .cognitive-orbit-spin-inner, .cognitive-link:focus-visible .cognitive-orbit-spin-inner, .cognitive-link.is-orbiting .cognitive-orbit-spin-inner { animation-play-state: running; -webkit-mask-image: linear-gradient(to right, rgba(0,0,0,.18), #000 74%); mask-image: linear-gradient(to right, rgba(0,0,0,.18), #000 74%); }
.cognitive-node { position: absolute; width: 9px; height: 9px; border-radius: 50%; background: var(--cyan); opacity: .78; box-shadow: 0 0 0 7px rgba(119,221,255,.07); }
.cognitive-node-understands { top: -4px; left: calc(50% - 4px); }
.cognitive-node-activates { bottom: -4px; left: calc(50% - 4px); background: var(--blue); }
.cognitive-node-coordinates { top: calc(50% - 4px); right: -4px; }
.cognitive-node-preserves { top: calc(50% - 4px); left: -4px; background: var(--blue); }
.cognitive-core { position: absolute; z-index: 3; top: 50%; left: 50%; transform: translate(-50%,-50%); width: 124px; height: 124px; display: flex; flex-direction: column; align-items: center; justify-content: center; overflow: hidden; border: 1px solid rgba(119,221,255,.58); border-radius: 50%; color: var(--cyan); background: radial-gradient(circle at 30% 26%, rgba(119,221,255,.3) 0, rgba(17,103,255,.18) 19%, rgba(3,11,20,.98) 59%, #01050a 100%); box-shadow: inset -24px -20px 38px rgba(0,0,0,.78), inset 12px 10px 25px rgba(119,221,255,.08), 0 0 54px rgba(17,103,255,.18); font: 500 9px/1.4 var(--mono); letter-spacing: .12em; }
.cognitive-core strong { font-size: 11px; }
.cognitive-sequence { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 21px 0; border-top: 1px solid rgba(119,221,255,.2); border-bottom: 1px solid rgba(119,221,255,.2); color: var(--cyan); font: 600 10px/1 var(--mono); letter-spacing: .09em; }
.cognitive-sequence i { color: rgba(244,247,248,.32); font-style: normal; }
.control-line { margin: 17px 0 0; text-align: center; color: #718590; font: 500 10px/1.4 var(--mono); letter-spacing: .11em; }
.architecture-principle { margin-top: 84px; padding-top: 32px; display: flex; flex-direction: column; gap: 11px; border-top: 1px solid rgba(119,221,255,.18); text-align: center; }
.architecture-principle strong { font: 600 clamp(27px,3vw,40px)/1.1 var(--sans); letter-spacing: -.035em; }
.architecture-principle span { color: #91a3ad; font-size: 17px; }
@keyframes cognitive-orbit { from { transform: rotateZ(0deg); } to { transform: rotateZ(360deg); } }
@keyframes cognitive-orbit-reverse { from { transform: rotateZ(360deg); } to { transform: rotateZ(0deg); } }

/* Result */
.result-section { padding: 120px 0; }
.result-timeline { display: grid; grid-template-columns: repeat(4, 1fr) 1.35fr; margin-top: 64px; border-top: 1px solid #bcc8ce; }
.result-timeline article { position: relative; min-height: 230px; padding: 28px 20px 0 0; }
.result-timeline article::before { content: ""; position: absolute; top: -6px; left: 0; width: 10px; height: 10px; border: 2px solid var(--blue); border-radius: 50%; background: var(--ice); }
.result-timeline span { display: block; font: 700 54px/1 var(--sans); letter-spacing: -.055em; }
.result-timeline strong { display: block; margin-top: 16px; font: 600 22px/1.1 var(--sans); letter-spacing: -.025em; }
.result-timeline p { max-width: 205px; margin: 9px 0 0; color: var(--graph); font-size: 13px; line-height: 1.5; }
.result-timeline .result-vivo { padding-left: 28px; border-left: 1px solid var(--line); }
.result-timeline .result-vivo::before { left: 28px; background: var(--blue); }
.result-timeline .result-vivo span { color: var(--blue); font-family: var(--sans); font-size: 64px; letter-spacing: -.06em; }
.result-timeline .result-vivo p { max-width: 285px; }
.traction-line { margin-top: 54px; padding: 34px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.traction-line div > span { color: var(--cyan-dark); font: 600 10px/1 var(--mono); letter-spacing: .12em; }
.traction-line strong { display: block; margin-top: 10px; font: 600 27px/1.1 var(--sans); letter-spacing: -.03em; }
.traction-line p { margin: 8px 0 0; color: var(--graph); font-size: 14px; }
.identity-transition { width: min(520px, 100%); min-height: 72px; margin: 34px auto 0; display: flex; align-items: center; justify-content: center; gap: 22px; color: var(--ice); background: var(--obs); border: 1px solid var(--obs); font: 700 11px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; transition: color .2s ease, border-color .2s ease, transform .2s ease; }
.identity-transition i { color: var(--cyan); font-size: 22px; font-style: normal; transition: transform .2s ease; }
.identity-transition:hover, .identity-transition:focus-visible { color: var(--cyan); border-color: var(--blue); transform: translateY(2px); }
.identity-transition:hover i, .identity-transition:focus-visible i { transform: translateY(4px); }

/* Identity: brand signature, not another informational section. */
.identity-section { padding: 70px 0 58px; }
.identity-inner { display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; }
.identity-inner h2 { margin: 0; font: 700 clamp(76px,10.5vw,146px)/.8 var(--sans); letter-spacing: -.062em; }
.identity-claim { margin: 34px 0 0; display: flex; flex-direction: column; align-items: center; gap: clamp(13px,1.5vw,22px); color: #a9bac3; font: 700 clamp(31px,4vw,53px)/.88 var(--sans); letter-spacing: -.06em; }
.identity-claim span, .identity-claim strong { display: block; }
.identity-claim strong { color: white; font-size: 1.08em; }
.identity-signature { width: 100%; margin-top: 36px; padding-top: 28px; border-top: 1px solid rgba(119,221,255,.2); }
.identity-signature > span { display: block; color: var(--cyan); font: 700 clamp(46px,5.4vw,76px)/.84 var(--sans); letter-spacing: -.062em; text-transform: uppercase; }
.identity-logo-wrap { position: relative; width: min(90vw, 1080px); margin: 8px auto 0; }
.identity-logo { display: block; width: 100%; height: auto; }
.identity-logo-wrap sup { position: absolute; top: 15%; right: 1.1%; color: #dfe7eb; font: 600 clamp(13px,1.5vw,21px)/1 var(--sans); }
.identity-manifesto { margin: 8px 0 0; color: white; font: 700 clamp(28px,3vw,42px)/.9 var(--sans); letter-spacing: -.035em; text-transform: uppercase; }
.identity-inner .button { margin-top: 25px; text-transform: uppercase; }
.identity-cta { min-width: 282px; }
.identity-section.is-staged .identity-beat { opacity: 0; transform: translateY(18px); }
.identity-section.is-staged.is-visible .identity-beat { opacity: 1; transform: translateY(0); transition: opacity .7s ease, transform .7s ease; }
.identity-section.is-staged.is-visible .beat-two { transition-delay: .28s; }
.identity-section.is-staged.is-visible .beat-three { transition-delay: .62s; }
.identity-section.is-staged.is-visible .beat-four { transition-delay: 1s; }
.identity-section.is-staged.is-visible .beat-five { transition-delay: 1.24s; }

/* Footer */
.site-footer { padding: 72px 0 26px; color: #dbe5ea; background: #020810; border-top: 1px solid rgba(119,221,255,.16); }
.footer-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 56px; }
.footer-grid > div:not(.footer-identity) { display: flex; flex-direction: column; align-items: flex-start; gap: 11px; }
.footer-identity img { width: 216px; filter: none; }
.footer-identity p { max-width: 390px; margin: 13px 0 0; color: #738690; font-size: 12px; line-height: 1.55; }
.footer-label { margin: 0 0 10px; color: var(--cyan); font: 600 10px/1 var(--mono); letter-spacing: .14em; }
.footer-grid a { color: #8ea0aa; font-size: 13px; line-height: 1.35; }
.footer-grid a:hover { color: white; }
.footer-base { margin-top: 56px; padding-top: 23px; display: flex; justify-content: space-between; gap: 24px; border-top: 1px solid rgba(119,221,255,.11); color: #617580; font: 500 9px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; }

/* Dialogs */
.dialog-backdrop { position: fixed; z-index: 1000; inset: 0; display: grid; place-items: center; padding: 24px; overflow: auto; color: var(--ice); background: rgba(0,0,0,.86); backdrop-filter: blur(8px); }
.contact-dialog { position: relative; width: min(900px, 100%); padding: 54px; border: 1px solid rgba(119,221,255,.28); background: var(--obs); }
.dialog-close { position: absolute; top: 20px; right: 20px; border: 0; color: #8fa2ac; background: none; font: 600 10px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.contact-dialog h2 { max-width: 720px; margin: 0; font: 700 clamp(42px,5.2vw,68px)/.94 var(--sans); letter-spacing: -.052em; }
.contact-dialog > p:not(.eyebrow):not(.direct-note) { max-width: 700px; margin: 23px 0 0; color: #99aab4; font-size: 18px; line-height: 1.55; }
.contact-options { display: grid; grid-template-columns: 1fr 1fr; margin-top: 38px; border-top: 1px solid rgba(119,221,255,.18); border-left: 1px solid rgba(119,221,255,.18); }
.contact-options a { min-height: 180px; display: flex; flex-direction: column; padding: 28px; border-right: 1px solid rgba(119,221,255,.18); border-bottom: 1px solid rgba(119,221,255,.18); }
.contact-options a:hover { background: rgba(119,221,255,.045); }
.contact-options span { color: var(--cyan); font: 600 10px/1 var(--mono); letter-spacing: .13em; }
.contact-options strong { margin-top: 25px; font: 600 24px/1.1 var(--sans); }
.contact-options small { margin-top: auto; color: #80949e; font-size: 12px; }
.direct-note { margin: 24px 0 0; color: #718690; font: 500 10px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.contact-secondary { display: flex; flex-wrap: wrap; gap: 14px 28px; margin-top: 22px; }
.contact-secondary a { padding-bottom: 5px; color: var(--cyan); border-bottom: 1px solid rgba(119,221,255,.32); font: 600 10px/1.3 var(--mono); letter-spacing: .07em; text-transform: uppercase; }
.video-dialog { background: #000; padding: 0; }
.video-shell { width: min(100vw, 177.78vh); }
.dialog-bar { height: 56px; display: flex; align-items: center; justify-content: space-between; padding: 0 18px; color: white; background: #000; }
.dialog-bar h2 { margin: 0; font: 600 11px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.dialog-bar button { border: 1px solid rgba(119,221,255,.35); padding: 10px 12px; color: white; background: transparent; font: 600 10px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.video-shell video { display: block; width: 100%; max-height: calc(100vh - 56px); background: #000; }
.video-fallback { min-height: min(640px, calc(100vh - 56px)); display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 46px; text-align: center; background: radial-gradient(circle at 50% 38%, #0a1b2a 0, var(--obs) 62%); }
.video-fallback h3 { max-width: 760px; margin: 0; font: 700 clamp(38px,5.2vw,72px)/.88 var(--sans); letter-spacing: -.055em; text-transform: uppercase; }
.video-fallback > p:not(.eyebrow) { max-width: 610px; margin: 24px 0 0; color: #9fb0bc; font-size: 17px; line-height: 1.55; }
.video-fallback > div { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }

/* Internal pages */
.internal-hero { min-height: 610px; display: flex; align-items: center; padding: 110px 0 92px; }
.internal-hero-inner { position: relative; }
.internal-hero h1 { max-width: 1030px; margin: 0; font: 700 clamp(62px, 7.1vw, 104px)/.91 var(--sans); letter-spacing: -.055em; }
.internal-hero h1 strong { color: var(--cyan); font-weight: 700; }
.internal-lead { max-width: 790px; margin: 30px 0 0; color: #a8b8c1; font-size: 20px; line-height: 1.6; }
.internal-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.updated-line { margin: 46px 0 0; color: #647985; font: 500 9px/1.4 var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.internal-body { padding: 0 0 112px; }
.content-stack { max-width: var(--shell); }
.content-section { display: grid; grid-template-columns: 340px minmax(0, 1fr); gap: 70px; padding: 80px 0; border-bottom: 1px solid var(--line); }
.content-section-heading > span { display: block; margin-bottom: 18px; color: var(--cyan-dark); font: 600 10px/1 var(--mono); letter-spacing: .12em; }
.content-section-heading h2 { margin: 0; font: 700 40px/1.02 var(--sans); letter-spacing: -.045em; }
.content-prose { max-width: 770px; color: #3f4a51; font-size: 17px; line-height: 1.7; }
.content-prose p { margin: 0 0 20px; }
.content-prose p:last-child { margin-bottom: 0; }
.content-prose h3 { margin: 31px 0 8px; color: var(--ink); font: 600 23px/1.15 var(--sans); letter-spacing: -.02em; }
.content-prose h3:first-child { margin-top: 0; }
.content-prose ul, .content-prose ol { margin: 0; padding-left: 22px; }
.content-prose li { margin: 0 0 10px; }
.content-prose a, .inline-arrow { color: #005f86; text-decoration: underline; text-decoration-color: rgba(0,95,134,.35); text-underline-offset: 4px; }
.content-prose blockquote { margin: 0 0 28px; padding: 25px 28px; color: var(--ink); border-left: 3px solid var(--blue); background: white; font: 600 28px/1.25 var(--sans); letter-spacing: -.025em; }
.principle-callout { margin-top: 34px; padding: 28px 30px; color: white; background: var(--obs); }
.principle-callout strong, .principle-callout span { display: block; }
.principle-callout strong { font: 600 26px/1.12 var(--sans); }
.principle-callout span { margin-top: 8px; color: var(--cyan); }
.operation-quartet { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--line); }
.operation-quartet article { min-height: 270px; padding: 44px 28px 40px 0; border-right: 1px solid var(--line); }
.operation-quartet article:not(:first-child) { padding-left: 28px; }
.operation-quartet article:last-child { border-right: 0; }
.operation-quartet span, .domain-grid span { color: var(--cyan-dark); font: 600 10px/1 var(--mono); letter-spacing: .12em; }
.operation-quartet h2 { margin: 58px 0 12px; font: 700 34px/1 var(--sans); letter-spacing: -.04em; }
.operation-quartet p { margin: 0; color: var(--graph); font-size: 14px; line-height: 1.55; }
.cognitive-internal-stage { display: grid; grid-template-columns: .88fr 1.12fr; gap: 58px; align-items: center; margin: 80px 0 0; padding: 58px 64px; color: var(--ice); background: var(--obs); border: 1px solid rgba(119,221,255,.16); }
.cognitive-internal-copy > span, .cognitive-case header > span, .cognitive-case-flow article > span, .cognitive-case-result > span { color: var(--cyan); font: 600 10px/1.35 var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.cognitive-internal-copy h2 { margin: 28px 0 0; font: 700 clamp(46px,5.4vw,72px)/.86 var(--sans); letter-spacing: -.06em; text-transform: uppercase; }
.cognitive-internal-copy p { max-width: 520px; margin: 25px 0 0; color: #9fb0bc; font-size: 16px; line-height: 1.6; }
.cognitive-internal-plate .cognitive-field { height: 390px; }
.cognitive-case { scroll-margin-top: 24px; margin: 80px 0 0; border: 1px solid #bdcbd1; background: white; }
.cognitive-case header { display: grid; grid-template-columns: .72fr 1.28fr; gap: 28px 46px; align-items: end; padding: 42px; color: var(--ice); background: var(--obs); }
.cognitive-case header > span { grid-column: 1 / -1; }
.cognitive-case header h2 { margin: 0; font: 700 clamp(43px,5.4vw,70px)/.86 var(--sans); letter-spacing: -.06em; text-transform: uppercase; }
.cognitive-case header p { margin: 0; color: #a7b7c0; font-size: 16px; line-height: 1.6; }
.cognitive-case-flow { display: grid; grid-template-columns: repeat(4, 1fr); }
.cognitive-case-flow article { min-height: 255px; padding: 30px 24px; border-right: 1px solid var(--line); }
.cognitive-case-flow article:last-child { border-right: 0; }
.cognitive-case-flow article > span { color: var(--cyan-dark); }
.cognitive-case-flow strong { display: block; margin-top: 44px; color: var(--ink); font: 700 25px/1 var(--sans); letter-spacing: -.035em; }
.cognitive-case-flow p { margin: 14px 0 0; color: var(--graph); font-size: 14px; line-height: 1.55; }
.cognitive-case-result { display: grid; grid-template-columns: 190px 1fr; gap: 28px; align-items: center; padding: 24px 30px; color: var(--ice); background: var(--obs-2); border-top: 1px solid rgba(119,221,255,.2); }
.cognitive-case-result p { margin: 0; color: #c1cdd3; font-size: 15px; line-height: 1.55; }
.cognitive-case-result strong { color: white; }
.governance-table { border-top: 1px solid #bfcbd0; }
.governance-table > div { display: grid; grid-template-columns: 1fr .72fr; gap: 24px; padding: 18px 4px; border-bottom: 1px solid var(--line); }
.governance-table > div:first-child { color: var(--cyan-dark); font: 600 10px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.governance-table span:last-child { color: var(--ink); font-weight: 600; }
.domain-grid { display: grid; grid-template-columns: 1fr 1fr; margin-bottom: 26px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.domain-grid div { min-height: 112px; display: flex; flex-direction: column; justify-content: space-between; padding: 22px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: white; }
.domain-grid strong { color: var(--ink); font: 600 19px/1.2 var(--sans); }
.claim-flow { display: flex; align-items: center; justify-content: space-between; gap: 15px; margin-bottom: 34px; padding: 25px 28px; color: var(--cyan); background: var(--obs); font: 600 10px/1 var(--mono); letter-spacing: .1em; }
.claim-flow i { color: #627882; font-style: normal; }
.pricing-grid { display: grid; grid-template-columns: 1fr 1fr; border-bottom: 1px solid var(--line); }
.pricing-grid article { padding: 68px 52px 62px 0; border-right: 1px solid var(--line); }
.pricing-grid article:last-child { padding-left: 52px; padding-right: 0; border-right: 0; }
.pricing-grid p { margin: 0; color: var(--cyan-dark); font: 600 10px/1.4 var(--mono); letter-spacing: .11em; }
.price-value { display: flex; align-items: baseline; flex-wrap: nowrap; gap: 13px; margin-top: 28px; white-space: nowrap; }
.price-value strong { font: 700 clamp(57px, 6vw, 84px)/.9 var(--sans); letter-spacing: -.06em; }
.price-value span { color: #53636b; font: 700 15px/1 var(--mono); letter-spacing: .04em; }
.pricing-grid article > span { display: block; margin-top: 14px; color: #718088; font-size: 12px; }
.price-copy { max-width: 510px; margin-top: 35px; color: #3f4a51; font-size: 16px; line-height: 1.6; }
.price-note { display: block; max-width: 440px; margin-top: 18px; padding-top: 15px; color: #53636b; border-top: 1px solid var(--line); font-size: 12px; line-height: 1.5; }
.check-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 35px; list-style: none; padding: 0 !important; }
.check-list li { position: relative; padding: 14px 0 14px 28px; border-bottom: 1px solid var(--line); }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--blue); font-weight: 700; }
.proposal-form { margin-top: 44px; border: 1px solid #bdcbd1; background: white; }
.form-block { display: grid; grid-template-columns: 180px 1fr; gap: 32px; padding: 34px; border-bottom: 1px solid var(--line); }
.form-step span { color: var(--cyan-dark); font: 600 10px/1 var(--mono); letter-spacing: .12em; }
.form-step h3 { margin: 10px 0 0; font: 600 25px/1 var(--sans); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.form-field { min-width: 0; display: grid; grid-template-rows: minmax(34px, auto) 46px; gap: 8px; align-self: start; }
.field-title { min-width: 0; display: flex; align-items: flex-start; gap: 8px; color: #435159; font-size: 12px; font-weight: 600; line-height: 1.35; }
.field-title label { padding-top: 3px; }
.field-title b { color: var(--blue); }
.form-grid input, .form-grid select { width: 100%; height: 46px; border: 1px solid #b9c6cc; border-radius: 0; padding: 0 12px; color: var(--ink); background: #fbfcfc; }
.form-grid input:focus, .form-grid select:focus { border-color: var(--blue); outline: 2px solid rgba(17,103,255,.16); }
.span-two { grid-column: 1 / -1; }
.info-tip { position: relative; flex: 0 0 auto; }
.info-tip > button { width: 19px; height: 19px; display: grid; place-items: center; padding: 0; border: 1px solid #7b919c; border-radius: 50%; color: #31505d; background: white; font: 700 11px/1 var(--mono); }
.info-tip > button:hover, .info-tip > button:focus-visible { color: white; border-color: var(--blue); background: var(--blue); }
.info-tip [role="tooltip"] { position: absolute; z-index: 20; left: 50%; bottom: calc(100% + 9px); width: min(280px, 72vw); padding: 11px 12px; color: white; background: var(--obs); box-shadow: 0 10px 28px rgba(3,11,20,.22); font: 500 11px/1.5 var(--sans); opacity: 0; pointer-events: none; transform: translate(-50%, 5px); transition: opacity .15s ease, transform .15s ease; }
.info-tip:hover [role="tooltip"], .info-tip:focus-within [role="tooltip"] { opacity: 1; transform: translate(-50%, 0); }
.form-honeypot { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.form-submit { padding: 34px; }
.form-submit > p:first-child { max-width: 760px; margin: 0; color: #5b6870; font-size: 12px; line-height: 1.6; }
.form-submit a { color: #005f86; text-decoration: underline; }
.form-submit .button { margin-top: 24px; }
.form-submit .button:disabled { cursor: default; opacity: .62; transform: none; }
.form-submit > small { display: block; max-width: 700px; margin-top: 13px; color: #718088; line-height: 1.45; }
.form-message { margin: 22px 0 0 !important; padding: 13px 15px; font-size: 13px !important; }
.form-error { color: #8d1a1a !important; background: #fff0f0; }
.form-success { color: #006947 !important; background: #eaf9f3; }
.form-success strong, .form-success span { display: block; }
.form-success strong { font-size: 15px; }
.form-success span { margin-top: 5px; font: 700 13px/1.3 var(--mono); letter-spacing: .05em; }
.form-success p { margin: 8px 0 0; font-size: 12px; line-height: 1.5; }
.legal-facts { margin: 0; border-top: 1px solid var(--line); }
.legal-facts div { display: grid; grid-template-columns: 180px 1fr; gap: 25px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.legal-facts dt { color: #6e7c84; font: 600 10px/1.4 var(--mono); letter-spacing: .09em; text-transform: uppercase; }
.legal-facts dd { margin: 0; color: var(--ink); }
.not-found { min-height: 72vh; display: flex; align-items: center; padding: 120px 0; }
.not-found h1 { max-width: 850px; margin: 0; font: 700 clamp(56px, 7vw, 96px)/.92 var(--sans); letter-spacing: -.055em; }
.not-found p:not(.eyebrow) { max-width: 620px; margin: 25px 0 30px; color: #9eb0ba; font-size: 18px; line-height: 1.55; }
.experience-error { min-height: 100svh; display: flex; align-items: center; padding: 100px 0; }
.experience-error h1 { max-width: 960px; margin: 0; font: 700 clamp(58px,8vw,112px)/.84 var(--sans); letter-spacing: -.06em; text-transform: uppercase; }
.experience-error p:not(.eyebrow) { max-width: 650px; margin: 28px 0 0; color: #9fb0bc; font-size: 18px; line-height: 1.55; }
.experience-error .shell > div { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

/* One display voice: the exact typographic character of RGH COGNITIVE LAYER. */
.hero-copy h1,
.section-intro h2,
.difference-section h2,
.architecture-copy h2,
.result-section h2,
.identity-inner h2,
.internal-hero h1,
.contact-dialog h2,
.content-section-heading h2,
.not-found h1 {
  font-family: var(--sans);
  font-weight: 700;
  font-style: normal;
  line-height: .85;
  letter-spacing: -.06em;
  text-transform: uppercase;
}

.hero-thesis,
.proof-heading h3,
.transition-line,
.architecture-copy h3,
.architecture-principle strong,
.identity-claim {
  font-family: var(--sans);
  font-weight: 700;
  font-style: normal;
  line-height: .85;
  letter-spacing: -.06em;
  text-transform: uppercase;
}

/* Full-screen home scenes: one complete idea per viewport on desktop */
@media (min-width: 861px) {
  html:has(.home-main) { scroll-snap-type: y proximity; }
  .home-main > section { min-height: 100svh; scroll-snap-align: start; }
  .operation-section, .difference-section, .architecture-section, .result-section, .identity-section { display: flex; flex-direction: column; justify-content: center; }
}

/* Notebook and short-monitor calibration */
@media (min-width: 861px) and (max-height: 880px) {
  .site-header { height: 68px; }
  .brand img { width: 188px; }
  .brand span { font-size: 8px; }
  .hero-section { padding-top: 106px; }
  .hero-grid { gap: 46px; padding-bottom: 24px; }
  .hero-copy h1 { font-size: clamp(72px, 7.5vw, 102px); }
  .hero-thesis { margin-top: 18px; font-size: 29px; }
  .hero-support { margin-top: 16px; font-size: 16px; line-height: 1.45; }
  .hero-actions { margin-top: 21px; }
  .hero-signal { width: min(350px, 30vw); }
  .process-signature { min-height: 54px; }
  .operation-section, .difference-section, .architecture-section, .result-section { padding: 58px 0; }
  .section-intro h2, .difference-section h2, .result-section h2 { font-size: clamp(48px, 5.1vw, 70px); }
  .section-intro > p:last-child { margin-top: 16px; font-size: 16px; }
  .proof-board { margin-top: 30px; }
  .proof-heading { padding: 18px 24px; }
  .proof-heading h3 { margin-top: 7px; font-size: 30px; }
  .proof-heading p { font-size: 13px; }
  .proof-flow article { min-height: 124px; padding: 18px 16px; }
  .proof-flow strong { margin-top: 14px; font-size: 17px; }
  .proof-flow small { margin-top: 7px; font-size: 10px; }
  .human-validation { grid-template-columns: 205px 1fr; gap: 18px; padding: 10px 20px; }
  .human-validation p { font-size: 11px; }
  .proof-close { padding: 16px 24px; font-size: 19px; }
  .difference-list { margin-top: 30px; }
  .difference-list article { padding: 18px 0; }
  .difference-list strong { font-size: 31px; }
  .difference-list .difference-final strong { font-size: 43px; }
  .transition-line { margin-top: 25px; font-size: 32px; }
  .architecture-grid { gap: 50px; }
  .architecture-copy h2 { font-size: 64px; }
  .architecture-description { margin-top: 18px; font-size: 15px; }
  .architecture-copy h3 { margin-top: 25px; font-size: 29px; }
  .architecture-copy .text-link { margin-top: 20px; }
  .cognitive-field { height: 300px; }
  .cognitive-a, .cognitive-orbit-outer { width: 290px; height: 290px; }
  .cognitive-b, .cognitive-orbit-inner { width: 220px; height: 220px; }
  .cognitive-c { width: 150px; height: 150px; }
  .architecture-principle { margin-top: 38px; padding-top: 20px; }
  .architecture-principle strong { font-size: 30px; }
  .architecture-principle span { font-size: 14px; }
  .result-timeline { margin-top: 32px; }
  .result-timeline article { min-height: 150px; padding-top: 20px; }
  .result-timeline span { font-size: 43px; }
  .result-timeline strong { margin-top: 10px; font-size: 18px; }
  .result-timeline p { font-size: 11px; }
  .result-timeline .result-vivo span { font-size: 50px; }
  .traction-line { margin-top: 25px; padding: 20px 0; }
  .traction-line strong { font-size: 22px; }
  .identity-transition { min-height: 54px; margin-top: 18px; }
  .identity-section { padding: 30px 0 24px; }
  .identity-inner h2 { font-size: 100px; }
  .identity-claim { margin-top: 22px; gap: 12px; font-size: 36px; }
  .identity-signature { margin-top: 20px; padding-top: 18px; }
  .identity-signature > span { font-size: 42px; }
  .identity-logo-wrap { width: min(72vw, 780px); margin-top: 2px; }
  .identity-manifesto { margin-top: 0; font-size: 30px; }
  .identity-inner .button { min-height: 44px; margin-top: 18px; }
}

@media (min-width: 861px) and (max-height: 700px) {
  .hero-section { padding-top: 86px; }
  .hero-copy h1 { font-size: 76px; }
  .hero-thesis { font-size: 25px; }
  .hero-support { max-width: 540px; font-size: 14px; }
  .hero-signal { width: min(290px, 28vw); }
  .operation-section, .difference-section, .architecture-section, .result-section { padding: 40px 0; }
  .section-intro h2, .difference-section h2, .result-section h2 { font-size: 48px; }
  .proof-board { margin-top: 20px; }
  .proof-heading { padding: 13px 20px; }
  .proof-flow article { min-height: 105px; padding: 14px; }
  .proof-flow strong { font-size: 15px; }
  .human-validation { grid-template-columns: 185px 1fr; gap: 14px; padding: 7px 16px; }
  .human-validation > span, .human-validation p { font-size: 10px; }
  .proof-close { padding: 12px 20px; font-size: 17px; }
  .difference-list { margin-top: 20px; }
  .difference-list article { padding: 14px 0; }
  .transition-line { margin-top: 18px; }
  .architecture-copy h2 { font-size: 54px; }
  .cognitive-field { height: 250px; }
  .cognitive-a, .cognitive-orbit-outer { width: 245px; height: 245px; }
  .cognitive-b, .cognitive-orbit-inner { width: 185px; height: 185px; }
  .cognitive-c { width: 125px; height: 125px; }
  .architecture-principle { margin-top: 25px; }
  .result-timeline { margin-top: 22px; }
  .result-timeline article { min-height: 125px; }
  .traction-line { margin-top: 16px; padding: 14px 0; }
  .identity-transition { min-height: 46px; margin-top: 10px; }
  .identity-section { padding: 18px 0 14px; }
  .identity-inner h2 { font-size: 72px; }
  .identity-claim { margin-top: 12px; gap: 7px; font-size: 25px; }
  .identity-signature { margin-top: 12px; padding-top: 10px; }
  .identity-signature > span { font-size: 30px; }
  .identity-logo-wrap { width: min(60vw, 600px); margin-top: 0; }
  .identity-manifesto { margin-top: -2px; font-size: 24px; }
  .identity-inner .button { min-height: 40px; margin-top: 12px; }
}

@media (max-width: 1080px) {
  .context-rail { width: 38px; min-height: 205px; font-size: 8px; }
  .brand img { width: 178px; }
  .brand span { font-size: 8px; }
  .site-nav { gap: 10px; font-size: 11px; }
  .nav-cta { padding-inline: 10px; font-size: 11px; }
  .hero-grid { gap: 32px; }
  .proof-flow { grid-template-columns: repeat(5, 1fr); }
  .proof-flow article { border-bottom: 1px solid var(--line); }
  .architecture-grid { gap: 42px; }
  .cognitive-a, .cognitive-orbit-outer { width: 360px; height: 360px; }
  .cognitive-b, .cognitive-orbit-inner { width: 260px; height: 260px; }
  .cognitive-c { width: 170px; height: 170px; }
  .footer-grid { grid-template-columns: 1.5fr repeat(3,1fr); gap: 35px; }
}

@media (max-width: 860px) {
  .shell { width: min(var(--shell), calc(100% - 36px)); }
  .menu-toggle { display: block; }
  .site-nav { position: absolute; top: 78px; left: 0; right: 0; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 16px 18px 22px; color: var(--ice); background: rgba(3,11,20,.98); border-bottom: 1px solid rgba(119,221,255,.2); }
  .site-nav.is-open { display: flex; }
  .site-nav a, .site-nav button { padding: 14px 0; text-align: left; border: 0; border-bottom: 1px solid rgba(119,221,255,.1); }
  .site-header-light .site-nav { color: var(--ice); }
  .hero-section { padding-top: 118px; }
  .hero-grid, .architecture-grid { grid-template-columns: 1fr; }
  .hero-signal { width: min(420px, 78vw); margin: 18px auto 0; }
  .process-signature { overflow-x: auto; justify-content: flex-start; }
  .proof-flow { grid-template-columns: repeat(2, 1fr); }
  .proof-heading { grid-template-columns: 1fr; }
  .human-validation { grid-template-columns: 1fr; gap: 7px; padding: 18px 20px; }
  .difference-list article { grid-template-columns: 170px 210px 1fr; }
  .result-timeline { grid-template-columns: repeat(2, 1fr); border-top: 0; }
  .result-timeline article { border-top: 1px solid #bcc8ce; }
  .result-timeline .result-vivo { grid-column: 1 / -1; border-left: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .content-section { grid-template-columns: 250px 1fr; gap: 40px; }
  .operation-quartet { grid-template-columns: 1fr 1fr; }
  .operation-quartet article:nth-child(2) { border-right: 0; }
  .cognitive-internal-stage { grid-template-columns: 1fr; padding: 48px; }
  .cognitive-internal-plate { width: min(600px, 100%); margin-inline: auto; }
  .cognitive-case header { grid-template-columns: 1fr; }
  .cognitive-case-flow { grid-template-columns: 1fr 1fr; }
  .cognitive-case-flow article:nth-child(2) { border-right: 0; }
  .cognitive-case-flow article:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .form-block { grid-template-columns: 140px 1fr; }
  .context-rail { position: static; width: calc(100% - 36px); min-height: 46px; margin: 28px auto 0; padding: 0 16px; transform: none; writing-mode: horizontal-tb; border-right: 1px solid; }
  .context-rail-light { border-color: rgba(9,16,23,.16); }
  .context-rail-dark { border-color: rgba(119,221,255,.24); }
}

@media (max-width: 600px) {
  .shell { width: calc(100% - 30px); }
  .site-header { height: 70px; }
  .brand img { width: 164px; }
  .brand span { font-size: 7px; letter-spacing: .16em; }
  .site-nav { top: 70px; }
  .hero-section { min-height: auto; padding-top: 112px; }
  .hero-grid { padding-bottom: 40px; }
  .hero-copy h1 { font-size: clamp(42px, 14.5vw, 58px); line-height: .86; }
  .hero-thesis { font-size: clamp(23px, 7.2vw, 27px); }
  .hero-support { font-size: 16px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-signal { width: min(340px, 86vw); }
  .signal-core { width: 104px; height: 104px; }
  .process-signature { min-height: 58px; justify-content: center; gap: 4px; padding-inline: 2px; overflow: visible; white-space: nowrap; font-size: 7px; letter-spacing: .025em; }
  .operation-section, .difference-section, .architecture-section, .result-section { padding: 84px 0; }
  .section-intro h2, .difference-section h2, .result-section h2 { font-size: clamp(39px, 12.8vw, 49px); }
  .section-intro > p:last-child { font-size: 17px; }
  .proof-board { margin-top: 42px; }
  .proof-heading { padding: 25px 21px; }
  .proof-heading h3 { font-size: 34px; }
  .proof-flow { grid-template-columns: 1fr; }
  .proof-flow article { min-height: 140px; border-right: 0; padding: 24px 21px; }
  .proof-flow strong { margin-top: 18px; }
  .human-validation p { font-size: 13px; }
  .proof-close { padding: 22px 19px; font-size: 21px; }
  .difference-list article { grid-template-columns: 1fr; gap: 9px; padding: 25px 0; }
  .difference-list strong { font-size: 35px; }
  .difference-list .difference-final strong { font-size: clamp(39px, 12.5vw, 45px); }
  .transition-line { font-size: clamp(27px, 8.6vw, 31px); }
  .architecture-copy h2 { font-size: clamp(44px, 14vw, 52px); line-height: .85; }
  .architecture-copy h3 { font-size: clamp(27px, 8.4vw, 30px); }
  .cognitive-field { height: 330px; }
  .cognitive-a, .cognitive-orbit-outer { width: 300px; height: 300px; }
  .cognitive-b, .cognitive-orbit-inner { width: 220px; height: 220px; }
  .cognitive-c { width: 150px; height: 150px; }
  .cognitive-sequence { gap: 4px; font-size: 7px; letter-spacing: .018em; white-space: nowrap; }
  .architecture-principle { text-align: left; }
  .result-timeline { grid-template-columns: 1fr; }
  .result-timeline article, .result-timeline .result-vivo { min-height: 185px; padding-left: 0; }
  .result-timeline .result-vivo { grid-column: auto; }
  .result-timeline .result-vivo::before { left: 0; }
  .identity-section { min-height: 100svh; padding: 62px 0 50px; }
  .identity-inner h2 { font-size: clamp(50px, 17vw, 64px); }
  .identity-claim { margin-top: 28px; gap: 14px; font-size: clamp(26px, 8.8vw, 33px); }
  .identity-signature { margin-top: 32px; padding-top: 26px; }
  .identity-signature > span { font-size: clamp(34px, 11vw, 41px); }
  .identity-logo-wrap { width: calc(100% + 4px); margin-top: 2px; }
  .identity-logo-wrap sup { top: 12%; right: 1%; font-size: 11px; }
  .identity-manifesto { margin-top: 6px; font-size: clamp(26px,8.5vw,32px); }
  .identity-inner .button { width: 100%; min-width: 0; margin-top: 28px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-base { flex-direction: column; }
  .contact-dialog { padding: 50px 21px 28px; }
  .contact-options { grid-template-columns: 1fr; }
  .contact-dialog h2 { font-size: clamp(36px, 11vw, 42px); }
  .video-fallback { padding: 34px 20px; }
  .video-fallback > div { width: 100%; flex-direction: column; }
  .internal-hero { min-height: auto; padding: 90px 0 76px; }
  .internal-hero h1 { font-size: clamp(40px, 13vw, 50px); }
  .internal-lead { font-size: 17px; }
  .internal-actions { flex-direction: column; align-items: stretch; }
  .content-section { grid-template-columns: 1fr; gap: 28px; padding: 58px 0; }
  .content-section-heading h2 { font-size: 34px; }
  .content-prose { font-size: 16px; }
  .content-prose blockquote { padding: 21px; font-size: 24px; }
  .operation-quartet { grid-template-columns: 1fr; }
  .operation-quartet article, .operation-quartet article:not(:first-child) { min-height: 210px; padding: 32px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .operation-quartet h2 { margin-top: 38px; }
  .cognitive-internal-stage { gap: 30px; margin-top: 58px; padding: 38px 20px; }
  .cognitive-internal-copy h2 { font-size: clamp(39px,12vw,48px); overflow-wrap: anywhere; }
  .cognitive-internal-plate .cognitive-field { height: 270px; }
  .cognitive-internal-plate .cognitive-a, .cognitive-internal-plate .cognitive-orbit-outer { width: min(240px, calc(100vw - 84px)); height: min(240px, calc(100vw - 84px)); }
  .cognitive-internal-plate .cognitive-b, .cognitive-internal-plate .cognitive-orbit-inner { width: min(178px, calc(100vw - 140px)); height: min(178px, calc(100vw - 140px)); }
  .cognitive-internal-plate .cognitive-c { width: 122px; height: 122px; }
  .cognitive-internal-plate .cognitive-sequence { display: grid; grid-template-columns: repeat(4, 1fr); gap: 3px; font-size: 6px; letter-spacing: 0; text-align: center; }
  .cognitive-internal-plate .cognitive-sequence i { display: none; }
  .cognitive-case { margin-top: 58px; }
  .cognitive-case header { padding: 32px 20px; }
  .cognitive-case header h2 { font-size: clamp(37px,11.8vw,47px); overflow-wrap: anywhere; }
  .cognitive-case-flow { grid-template-columns: 1fr; }
  .cognitive-case-flow article, .cognitive-case-flow article:nth-child(2) { min-height: 210px; border-right: 0; border-bottom: 1px solid var(--line); }
  .cognitive-case-flow article:last-child { border-bottom: 0; }
  .cognitive-case-flow strong { margin-top: 34px; }
  .cognitive-case-result { grid-template-columns: 1fr; gap: 12px; padding: 24px 20px; }
  .governance-table > div { grid-template-columns: 1fr; gap: 6px; }
  .domain-grid { grid-template-columns: 1fr; }
  .claim-flow { flex-wrap: wrap; justify-content: flex-start; line-height: 1.5; }
  .pricing-grid { grid-template-columns: 1fr; }
  .pricing-grid article, .pricing-grid article:last-child { padding: 52px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .check-list { grid-template-columns: 1fr; }
  .form-block { grid-template-columns: 1fr; padding: 27px 20px; }
  .form-grid { grid-template-columns: 1fr; }
  .span-two { grid-column: auto; }
  .form-submit { padding: 27px 20px; }
  .form-submit .button { width: 100%; }
  .legal-facts div { grid-template-columns: 1fr; gap: 6px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto; transition-duration: .01ms; animation-duration: .01ms; animation-iteration-count: 1; }
  .identity-section.is-staged .identity-beat { opacity: 1; transform: none; }
  .signal-orbit, .cognitive-orbit { animation: none; }
  .signal-ring, .cognitive-ring { transform: translate(-50%,-50%) !important; -webkit-mask-image: none !important; mask-image: none !important; }
  .signal-orbit-plane { transform: none !important; }
  .cognitive-orbit-plane { transform: translate(-50%,-50%) !important; }
}