:root {
  --ink: #111827;
  --blue: #243352;
  --signal: #12cfe0;
  --cyan: #00b7c3;
  --verified: #0f766e;
  --warning: #f5a524;
  --critical: #d92d20;
  --mist: #e9eaf2;
  --paper: #ffffff;
  --muted: #657083;
  --line: rgba(17, 24, 39, 0.14);
  --dark-line: rgba(255, 255, 255, 0.18);
  --max: 1240px;
  --header: 78px;
  --ease: cubic-bezier(.2,.7,.2,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
:focus-visible { outline: 3px solid var(--signal); outline-offset: 4px; }
.skip-link { position: fixed; top: -80px; left: 18px; z-index: 100; padding: 12px 18px; background: var(--ink); color: white; }
.skip-link:focus { top: 12px; }
.wrap { width: min(calc(100% - 48px), var(--max)); margin-inline: auto; }
.narrow { width: min(calc(100% - 48px), 840px); margin-inline: auto; }
.eyebrow { margin: 0 0 18px; color: var(--verified); font-size: .72rem; font-weight: 800; letter-spacing: .16em; line-height: 1.25; text-transform: uppercase; }
.on-dark .eyebrow, .dark .eyebrow { color: var(--signal); }
h1, h2, h3, h4, p { margin-top: 0; }
h1, h2, h3 { letter-spacing: -.035em; line-height: 1.06; }
h1 { max-width: 940px; margin-bottom: 28px; font-size: clamp(2.9rem, 6.8vw, 6.9rem); font-weight: 680; }
h2 { max-width: 850px; margin-bottom: 24px; font-size: clamp(2.1rem, 4.3vw, 4.7rem); font-weight: 650; }
h3 { margin-bottom: 13px; font-size: clamp(1.25rem, 2vw, 1.8rem); font-weight: 680; }
.lede { max-width: 770px; margin-bottom: 34px; color: #3e495c; font-size: clamp(1.1rem, 1.65vw, 1.38rem); line-height: 1.55; }
.dark .lede, .on-dark .lede { color: rgba(255,255,255,.75); }
.micro { color: var(--muted); font-size: .83rem; }
.signal { color: var(--cyan); }
.section { padding: clamp(84px, 11vw, 156px) 0; }
.section.compact { padding-block: clamp(66px, 8vw, 108px); }
.section.mist { background: #f5f6f9; }
.section.dark { background: var(--ink); color: var(--paper); }
.section.blue { background: var(--blue); color: var(--paper); }
.rule { border-top: 1px solid var(--line); }

.site-header { position: sticky; top: 0; z-index: 50; height: var(--header); border-bottom: 1px solid rgba(17,24,39,.08); background: rgba(255,255,255,.94); backdrop-filter: blur(16px); }
.nav-shell { display: flex; width: min(calc(100% - 48px), 1360px); height: 100%; margin-inline: auto; align-items: center; justify-content: space-between; gap: 24px; }
.brand img { width: 162px; height: auto; }
.desktop-nav { display: flex; align-items: center; gap: 25px; }
.desktop-nav > a, .nav-trigger { position: relative; border: 0; background: transparent; color: #364052; font-size: .84rem; font-weight: 650; cursor: pointer; }
.desktop-nav > a::after, .nav-trigger::after { position: absolute; right: 0; bottom: -13px; left: 0; height: 2px; background: var(--cyan); content: ""; opacity: 0; transform: scaleX(.25); transition: .2s var(--ease); }
.desktop-nav > a:hover::after, .desktop-nav > a[aria-current="page"]::after, .nav-group:hover .nav-trigger::after { opacity: 1; transform: scaleX(1); }
.nav-group { position: relative; }
.nav-trigger::before { content: "+"; position: absolute; right: -14px; color: var(--cyan); }
.nav-menu { position: absolute; top: 34px; left: -22px; display: none; width: 245px; padding: 13px; border: 1px solid var(--line); background: white; box-shadow: 0 22px 50px rgba(17,24,39,.15); }
.nav-group:hover .nav-menu, .nav-group:focus-within .nav-menu { display: grid; }
.nav-menu a { padding: 10px 12px; color: #3b465a; font-size: .84rem; font-weight: 600; }
.nav-menu a:hover { background: #f3f5f7; color: var(--verified); }
.nav-cta { padding: 10px 17px !important; border: 1px solid var(--ink); color: var(--ink) !important; }
.menu-toggle { display: none; width: 46px; height: 46px; padding: 12px; border: 1px solid var(--line); background: transparent; cursor: pointer; }
.menu-toggle span { display: block; height: 2px; margin: 5px 0; background: var(--ink); transition: .2s; }
.mobile-panel { position: fixed; inset: var(--header) 0 0; z-index: 45; display: none; padding: 32px 24px 50px; overflow: auto; background: var(--ink); color: white; }
.mobile-panel.is-open { display: block; }
.mobile-panel nav { display: grid; }
.mobile-panel a { padding: 14px 0; border-bottom: 1px solid var(--dark-line); font-size: 1.1rem; }
.mobile-panel .mobile-label { margin: 25px 0 6px; color: var(--signal); font-size: .7rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }

.hero { position: relative; min-height: min(830px, calc(100vh - var(--header))); display: grid; align-items: end; overflow: hidden; background: var(--ink); color: white; }
.hero-media, .hero-media picture, .hero-media img, .page-hero-media, .page-hero-media picture, .page-hero-media img { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-media img, .page-hero-media img { object-fit: cover; }
.hero::before, .page-hero.visual::before { position: absolute; inset: 0; z-index: 1; background: linear-gradient(90deg, rgba(8,16,31,.96) 0%, rgba(8,16,31,.78) 43%, rgba(8,16,31,.18) 76%), linear-gradient(0deg, rgba(8,16,31,.72) 0%, transparent 48%); content: ""; }
.hero-content { position: relative; z-index: 2; padding-block: clamp(110px, 15vw, 195px) clamp(70px, 8vw, 112px); }
.hero h1 { max-width: 900px; font-size: clamp(3rem, 7vw, 7.2rem); }
.hero .lede { max-width: 680px; color: rgba(255,255,255,.8); }
.hero-proof { display: flex; flex-wrap: wrap; gap: 10px 28px; margin-top: 48px; color: rgba(255,255,255,.67); font-size: .8rem; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; }
.hero-proof span { display: flex; align-items: center; gap: 9px; }
.hero-proof span::before { width: 7px; height: 7px; background: var(--signal); content: ""; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button { display: inline-flex; min-height: 49px; padding: 12px 20px; align-items: center; justify-content: center; gap: 16px; border: 1px solid var(--ink); background: var(--ink); color: white; font-size: .82rem; font-weight: 750; letter-spacing: .02em; transition: .2s var(--ease); }
.button::after { content: "↗"; color: var(--signal); }
.button:hover { background: var(--blue); transform: translateY(-2px); }
.button.light { border-color: white; background: white; color: var(--ink); }
.button.ghost { border-color: rgba(255,255,255,.45); background: transparent; color: white; }
.button.ghost-dark { border-color: var(--line); background: transparent; color: var(--ink); }

.page-hero { position: relative; padding: clamp(100px, 13vw, 176px) 0 clamp(72px, 9vw, 120px); background: #f4f5f8; }
.page-hero.visual { min-height: 640px; display: grid; align-items: end; overflow: hidden; background: var(--ink); color: white; }
.page-hero.visual .wrap { position: relative; z-index: 2; }
.page-hero.visual .lede { color: rgba(255,255,255,.76); }
.page-hero h1 { max-width: 980px; font-size: clamp(3rem, 6.3vw, 6.5rem); }
.page-hero .lede { max-width: 720px; }

.split { display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(310px, .76fr); gap: clamp(48px, 9vw, 128px); align-items: start; }
.split.equal { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.split.reverse > :first-child { order: 2; }
.sticky-copy { position: sticky; top: calc(var(--header) + 34px); }
.statement { max-width: 1000px; font-size: clamp(1.9rem, 4.1vw, 4.4rem); line-height: 1.13; letter-spacing: -.04em; }
.statement em { color: var(--verified); font-style: normal; }
.fact-list { display: grid; border-top: 1px solid var(--line); }
.fact { display: grid; grid-template-columns: 48px 1fr; gap: 20px; padding: 25px 0; border-bottom: 1px solid var(--line); }
.fact-number { color: var(--cyan); font-size: .72rem; font-weight: 800; letter-spacing: .12em; }
.fact p { margin: 0; color: var(--muted); }
.editorial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.editorial-item { min-height: 290px; padding: 38px; background: white; }
.editorial-item .index { display: block; margin-bottom: 70px; color: var(--cyan); font-size: .72rem; font-weight: 800; }
.editorial-item p { margin: 0; color: var(--muted); }
.dark .editorial-grid { background: var(--dark-line); border-color: var(--dark-line); }
.dark .editorial-item { background: var(--ink); }
.dark .editorial-item p { color: rgba(255,255,255,.66); }
.image-panel { position: relative; overflow: hidden; background: var(--ink); }
.image-panel img { width: 100%; aspect-ratio: 16/9; object-fit: cover; transition: transform 1.1s var(--ease); }
.image-panel:hover img { transform: scale(1.015); }
.image-caption { display: flex; padding-top: 13px; justify-content: space-between; gap: 20px; color: var(--muted); font-size: .73rem; letter-spacing: .04em; }
.photo-pair { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.photo-pair img { width: 100%; height: 100%; min-height: 460px; object-fit: cover; }
.quote-band { padding: 50px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.quote-band p { max-width: 1050px; margin: 0; font-size: clamp(1.55rem, 3vw, 3.15rem); line-height: 1.2; letter-spacing: -.035em; }

.diagram-shell { position: relative; margin-top: 56px; padding: clamp(26px, 5vw, 60px); border: 1px solid var(--line); background: white; overflow: hidden; }
.dark .diagram-shell { border-color: var(--dark-line); background: rgba(255,255,255,.035); }
.diagram-title { display: flex; margin-bottom: 42px; align-items: center; justify-content: space-between; gap: 20px; font-size: .73rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.diagram-title span:last-child { color: var(--verified); }
.dark .diagram-title span:last-child { color: var(--signal); }
.node { padding: 17px 18px; border: 1px solid var(--line); background: white; }
.node strong { display: block; margin-bottom: 5px; font-size: .84rem; line-height: 1.25; }
.node small { display: block; color: var(--muted); font-size: .72rem; line-height: 1.45; }
.dark .node { border-color: var(--dark-line); background: rgba(255,255,255,.035); }
.dark .node small { color: rgba(255,255,255,.58); }
.node.accent { border-color: var(--cyan); box-shadow: inset 3px 0 0 var(--cyan); }
.node.authority { border-color: var(--verified); box-shadow: inset 3px 0 0 var(--verified); }
.connector { display: grid; color: var(--cyan); place-items: center; font-size: 1.4rem; }

.truth-spine { display: grid; grid-template-columns: 1fr 62px 1.25fr 62px 1fr; align-items: stretch; }
.truth-spine .node { min-height: 140px; }
.spine-core { display: grid; border: 1px solid var(--cyan); background: rgba(18,207,224,.07); place-items: center; text-align: center; }
.spine-core strong { font-size: 1.15rem; }
.truth-branches { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-top: 10px; }
.truth-branches .node { min-height: 126px; }

.forms { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.form { position: relative; min-height: 250px; padding: 30px 22px; border-top: 3px solid var(--cyan); background: #f5f6f9; }
.form:nth-child(2) { border-color: #56a1ac; }
.form:nth-child(3) { border-color: var(--verified); }
.form:nth-child(4) { border-color: var(--warning); }
.form:nth-child(5) { border-color: var(--critical); }
.form .index { color: var(--muted); font-size: .67rem; font-weight: 800; letter-spacing: .12em; }
.form h3 { margin-top: 48px; font-size: 1.18rem; }
.form p { margin: 0; color: var(--muted); font-size: .84rem; }

.stack { display: grid; gap: 8px; }
.stack-layer { display: grid; grid-template-columns: 58px minmax(170px,.8fr) 1.8fr; gap: 18px; padding: 18px 22px; align-items: center; border: 1px solid var(--line); }
.stack-layer .index { color: var(--cyan); font-size: .7rem; font-weight: 800; }
.stack-layer strong { font-size: .9rem; }
.stack-layer p { margin: 0; color: var(--muted); font-size: .82rem; }
.dark .stack-layer { border-color: var(--dark-line); }
.dark .stack-layer p { color: rgba(255,255,255,.58); }

.decision-loop { display: grid; grid-template-columns: repeat(11, auto); align-items: stretch; }
.decision-loop .node { min-width: 120px; }
.decision-loop .connector { padding: 0 7px; }
.loop-return { grid-column: 1 / -1; display: flex; margin: 15px 4% 0; padding-top: 12px; border-top: 1px solid var(--cyan); justify-content: center; color: var(--verified); font-size: .7rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }

.authority-table { display: grid; grid-template-columns: 1.15fr repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.authority-table > div { min-height: 76px; padding: 17px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); font-size: .79rem; }
.authority-table .head { background: var(--ink); color: white; font-weight: 750; }
.authority-table .yes { background: rgba(15,118,110,.08); color: var(--verified); font-weight: 750; }
.authority-table .conditional { background: rgba(245,165,36,.09); color: #8a5b04; font-weight: 750; }
.authority-table .no { color: var(--muted); }

.dual-loop { display: grid; grid-template-columns: 1fr 78px 1fr; align-items: center; }
.loop-box { padding: 32px; border: 1px solid var(--line); }
.loop-box .mini-flow { display: flex; margin-top: 25px; flex-wrap: wrap; gap: 7px; }
.mini-flow span { padding: 7px 9px; background: #f0f2f5; color: #465164; font-size: .67rem; font-weight: 700; }
.dark .loop-box { border-color: var(--dark-line); }
.dark .mini-flow span { background: rgba(255,255,255,.08); color: rgba(255,255,255,.68); }

.topology { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; }
.topology .zone { min-height: 270px; padding: 26px; border: 1px solid var(--dark-line); background: rgba(255,255,255,.035); }
.topology .zone h3 { margin-bottom: 44px; color: var(--signal); font-size: 1.1rem; }
.topology .zone ul { margin: 0; padding: 0; list-style: none; }
.topology .zone li { padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,.09); color: rgba(255,255,255,.7); font-size: .8rem; }
.topology-link { display: flex; grid-column: 1 / -1; height: 48px; align-items: center; justify-content: center; background: rgba(18,207,224,.1); color: var(--signal); font-size: .7rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }

.lineage { display: grid; grid-template-columns: repeat(7, 1fr); align-items: stretch; }
.lineage .node { min-height: 128px; }
.lineage .connector { min-width: 45px; }
.evidence-badges { display: flex; margin-top: 25px; flex-wrap: wrap; gap: 8px; }
.evidence-badges span { padding: 7px 10px; border: 1px solid var(--line); color: var(--muted); font-size: .67rem; font-weight: 700; }

.output-contract { display: grid; grid-template-columns: 1.2fr .8fr; gap: 10px; }
.contract-main { padding: 34px; border: 1px solid var(--cyan); background: rgba(18,207,224,.05); }
.contract-main pre { margin: 27px 0 0; padding: 24px; overflow: auto; background: var(--ink); color: #d8f9fb; font: .73rem/1.75 ui-monospace, SFMono-Regular, Menlo, monospace; }
.contract-rail { display: grid; gap: 10px; }
.contract-rail .node { min-height: 100px; }

.expansion-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.expansion-step { min-height: 220px; padding: 27px; border: 1px solid var(--line); }
.expansion-step .index { color: var(--cyan); font-size: .68rem; font-weight: 800; }
.expansion-step h3 { margin-top: 45px; font-size: 1.08rem; }
.expansion-step p { margin: 0; color: var(--muted); font-size: .8rem; }

.solution-band { display: grid; grid-template-columns: .72fr 1.28fr; min-height: 560px; }
.solution-band .copy { display: flex; padding: clamp(40px, 6vw, 84px); flex-direction: column; justify-content: space-between; background: var(--ink); color: white; }
.solution-band .copy p { color: rgba(255,255,255,.66); }
.solution-band .visual img { width: 100%; height: 100%; object-fit: cover; }
.use-cases { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.use-case { min-height: 230px; padding: 32px; background: white; }
.use-case .tag { color: var(--verified); font-size: .68rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.use-case h3 { margin-top: 44px; font-size: 1.12rem; }
.use-case p { margin: 0; color: var(--muted); font-size: .84rem; }

.principles { counter-reset: principle; border-top: 1px solid var(--line); }
.principle { display: grid; grid-template-columns: 80px .75fr 1fr; gap: 40px; padding: 34px 0; border-bottom: 1px solid var(--line); }
.principle::before { counter-increment: principle; content: "0" counter(principle); color: var(--cyan); font-size: .72rem; font-weight: 800; }
.principle h3 { font-size: 1.22rem; }
.principle p { margin: 0; color: var(--muted); }

.contact-grid { display: grid; grid-template-columns: .65fr 1.35fr; gap: clamp(40px, 8vw, 110px); }
.contact-notes { padding-top: 6px; }
.contact-notes ul { margin: 30px 0 0; padding: 0; list-style: none; }
.contact-notes li { padding: 13px 0; border-bottom: 1px solid var(--line); color: var(--muted); font-size: .86rem; }
.contact-form { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.field { display: grid; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: .76rem; font-weight: 750; }
.field input, .field textarea, .field select { width: 100%; border: 0; border-bottom: 1px solid #8891a0; border-radius: 0; padding: 13px 1px; background: transparent; color: var(--ink); }
.field textarea { min-height: 150px; resize: vertical; }
.form-note { grid-column: 1 / -1; min-height: 25px; color: var(--verified); font-size: .8rem; }
.form-submit { grid-column: 1 / -1; justify-self: start; }

.cta-image { position: relative; min-height: 610px; display: grid; align-items: end; overflow: hidden; background: var(--ink); color: white; }
.cta-image picture, .cta-image img { position: absolute; inset: 0; width: 100%; height: 100%; }
.cta-image img { object-fit: cover; }
.cta-image::before { position: absolute; inset: 0; z-index: 1; background: linear-gradient(90deg, rgba(10,18,32,.95), rgba(10,18,32,.42) 70%, rgba(10,18,32,.16)); content: ""; }
.cta-image .wrap { position: relative; z-index: 2; padding-block: 90px; }
.cta-image h2 { max-width: 760px; }

.site-footer { background: var(--ink); color: white; }
.footer-top { display: grid; grid-template-columns: 1.3fr repeat(3,.7fr); gap: 55px; padding: 76px 0 62px; }
.footer-brand img { width: 180px; height: auto; }
.footer-brand p { max-width: 360px; margin: 26px 0 0; color: rgba(255,255,255,.56); font-size: .85rem; }
.footer-group strong { display: block; margin-bottom: 16px; color: var(--signal); font-size: .67rem; letter-spacing: .13em; text-transform: uppercase; }
.footer-group a { display: block; padding: 5px 0; color: rgba(255,255,255,.67); font-size: .82rem; }
.footer-group a:hover { color: white; }
.footer-bottom { display: flex; padding: 23px 0 30px; border-top: 1px solid var(--dark-line); align-items: center; justify-content: space-between; gap: 20px; color: rgba(255,255,255,.45); font-size: .7rem; }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .65s var(--ease), transform .65s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 1080px) {
  .desktop-nav { gap: 17px; }
  .desktop-nav > a, .nav-trigger { font-size: .76rem; }
  .forms { grid-template-columns: repeat(3, 1fr); }
  .form:nth-child(4), .form:nth-child(5) { grid-column: span 1; }
  .decision-loop { grid-template-columns: repeat(5, 1fr); gap: 8px; }
  .decision-loop .connector { display: none; }
  .decision-loop .node { min-width: 0; }
  .lineage { grid-template-columns: repeat(4, 1fr); gap: 8px; }
  .lineage .connector { display: none; }
}

@media (max-width: 900px) {
  :root { --header: 70px; }
  .desktop-nav { display: none; }
  .menu-toggle { display: block; }
  .brand img { width: 145px; }
  .split, .split.equal, .contact-grid { grid-template-columns: 1fr; }
  .split.reverse > :first-child { order: initial; }
  .sticky-copy { position: static; }
  .editorial-grid { grid-template-columns: 1fr; }
  .editorial-item { min-height: 220px; }
  .editorial-item .index { margin-bottom: 44px; }
  .truth-spine { grid-template-columns: 1fr; gap: 10px; }
  .truth-spine .connector { transform: rotate(90deg); }
  .truth-branches { grid-template-columns: repeat(2, 1fr); }
  .forms { grid-template-columns: repeat(2, 1fr); }
  .decision-loop { grid-template-columns: repeat(3, 1fr); }
  .dual-loop { grid-template-columns: 1fr; gap: 10px; }
  .dual-loop > .connector { transform: rotate(90deg); }
  .topology { grid-template-columns: 1fr; }
  .output-contract { grid-template-columns: 1fr; }
  .expansion-grid { grid-template-columns: repeat(2, 1fr); }
  .solution-band { grid-template-columns: 1fr; }
  .solution-band .visual { min-height: 420px; }
  .footer-top { grid-template-columns: 1.3fr 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 700px) {
  .wrap, .narrow, .nav-shell { width: min(calc(100% - 32px), var(--max)); }
  h1 { font-size: clamp(2.65rem, 13vw, 4.4rem); }
  h2 { font-size: clamp(2rem, 10vw, 3.25rem); }
  .section { padding-block: 78px; }
  .hero { min-height: calc(100svh - var(--header)); }
  .hero::before, .page-hero.visual::before { background: linear-gradient(0deg, rgba(8,16,31,.98) 3%, rgba(8,16,31,.77) 49%, rgba(8,16,31,.2) 85%); }
  .hero-content { padding-block: 180px 55px; }
  .hero h1 { font-size: clamp(2.75rem, 13.8vw, 4.55rem); }
  .hero-proof { gap: 9px 17px; margin-top: 34px; }
  .hero-proof span { width: calc(50% - 10px); }
  .actions { align-items: stretch; flex-direction: column; }
  .button { width: 100%; }
  .page-hero.visual { min-height: 600px; }
  .page-hero h1 { font-size: clamp(2.65rem, 13vw, 4.5rem); }
  .photo-pair { grid-template-columns: 1fr; }
  .photo-pair img { min-height: 350px; }
  .diagram-shell { margin-top: 38px; padding: 22px 16px; }
  .diagram-title { align-items: flex-start; flex-direction: column; gap: 7px; }
  .truth-branches { grid-template-columns: 1fr; }
  .forms { grid-template-columns: 1fr; }
  .form { min-height: 210px; }
  .stack-layer { grid-template-columns: 38px 1fr; }
  .stack-layer p { grid-column: 2; }
  .decision-loop { grid-template-columns: 1fr; }
  .decision-loop .node { min-height: auto; }
  .decision-loop .connector { display: grid; transform: rotate(90deg); }
  .authority-table { grid-template-columns: 1.05fr repeat(3, .72fr); overflow-x: auto; }
  .authority-table > div { min-width: 92px; padding: 12px 9px; font-size: .68rem; }
  .lineage { grid-template-columns: 1fr; }
  .lineage .connector { display: grid; transform: rotate(90deg); }
  .expansion-grid { grid-template-columns: 1fr; }
  .use-cases { grid-template-columns: 1fr; }
  .principle { grid-template-columns: 44px 1fr; gap: 20px; }
  .principle p { grid-column: 2; }
  .contact-form { grid-template-columns: 1fr; }
  .field.full, .form-note, .form-submit { grid-column: auto; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 42px 28px; }
  .footer-bottom { align-items: flex-start; flex-direction: column; }
  .cta-image { min-height: 670px; }
}

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

@media print {
  .site-header, .mobile-panel, .site-footer, .actions { display: none; }
  .section { padding: 35px 0; }
  .hero, .page-hero.visual { min-height: auto; padding: 70px 0; }
  .reveal { opacity: 1; transform: none; }
}