:root {
  --background: #060b10;
  --foreground: #f1f4f4;
  --surface: #0a1118;
  --surface-2: #0f1821;
  --ink-muted: #9cabb5;
  --ink-dim: #6e7d87;
  --line: rgba(222, 235, 240, 0.14);
  --line-strong: rgba(222, 235, 240, 0.26);
  --cyan: #7edfff;
  --cyan-bright: #b8efff;
  --gold: #d7ad68;
  --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, "Times New Roman", serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --max: 1360px;
  --journey-progress: 0;
  --journey-x: 0%;
  --journey-y: -1.2%;
  --journey-scale: 1.018;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { background: var(--background); scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; overflow-x: hidden; background: var(--background); color: var(--foreground); font-family: var(--sans); font-size: 17px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--cyan); outline-offset: 5px; }
main:focus { outline: none; }
::selection { background: rgba(126, 223, 255, 0.28); color: white; }

.site-shell { width: min(calc(100% - 64px), var(--max)); margin-inline: auto; }
.section-space { padding-block: clamp(92px, 10vw, 176px); }
.micro-label, .hero-kicker { display: inline-block; color: var(--cyan); font-size: 0.69rem; font-weight: 750; letter-spacing: 0.2em; line-height: 1.3; text-transform: uppercase; }
.skip-link { position: fixed; z-index: 1000; top: -100px; left: 20px; padding: 12px 18px; background: white; color: #061018; border-radius: 3px; }
.skip-link:focus { top: 18px; }

.site-header { position: fixed; z-index: 100; inset: 0 0 auto; height: 86px; display: flex; align-items: center; background: linear-gradient(180deg, rgba(3, 7, 10, 0.82), transparent); transition: height 300ms ease, background 300ms ease, border-color 300ms ease; border-bottom: 1px solid transparent; }
.site-header.is-scrolled { height: 70px; background: rgba(5, 10, 15, 0.88); border-color: var(--line); backdrop-filter: blur(18px) saturate(1.3); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.header-brand { width: clamp(190px, 18vw, 248px); min-height: 44px; display: flex; align-items: center; }
.header-brand img { width: 100%; }
.primary-navigation { display: flex; align-items: center; gap: clamp(18px, 2vw, 34px); font-size: 0.73rem; font-weight: 650; letter-spacing: 0.11em; text-transform: uppercase; }
.primary-navigation > a { position: relative; color: #d1d9de; min-height: 44px; display: inline-flex; align-items: center; }
.primary-navigation > a:not(.nav-inquiry)::after { content: ""; position: absolute; inset: auto 50% 6px; height: 1px; background: var(--cyan); transition: inset 220ms ease; }
.primary-navigation > a:hover::after { inset-inline: 0; }
.primary-navigation .nav-inquiry { min-height: 44px; padding-inline: 18px; border: 1px solid var(--line-strong); border-radius: 999px; color: white; }
.primary-navigation .nav-inquiry:hover { background: rgba(255, 255, 255, 0.07); }
.menu-button { display: none; width: 46px; height: 46px; border: 0; border-radius: 50%; background: transparent; }
.menu-button span { display: block; width: 23px; height: 1px; margin: 7px auto; background: white; transition: transform 200ms ease; }

/* Original Pass-2 continuous photonic assembly journey */
.journey-track { position: relative; height: 720svh; background: #020609; }
.journey-stage { position: sticky; top: 0; height: 100svh; min-height: 680px; overflow: hidden; isolation: isolate; }
.journey-world { position: absolute; z-index: -5; top: 50%; left: 0; width: 305vw; height: 116svh; transform: translate3d(var(--journey-x), calc(-50% + var(--journey-y)), 0) scale(var(--journey-scale)); transform-origin: center; will-change: transform; backface-visibility: hidden; }
.journey-world, .journey-world img { max-width: none; }
.journey-world img { width: 100%; height: 100%; object-fit: cover; object-position: center; filter: saturate(.9) contrast(1.04) brightness(.8); }
.journey-atmosphere { position: absolute; z-index: -4; inset: 0; pointer-events: none; background: radial-gradient(ellipse at 50% 44%, transparent 20%, rgba(2,6,9,.18) 63%, rgba(2,6,9,.62) 100%); }
.journey-shade { position: absolute; z-index: -3; inset: 0; pointer-events: none; background: linear-gradient(90deg, rgba(2,6,9,.72) 0%, rgba(2,6,9,.08) 30%, rgba(2,6,9,.04) 68%, rgba(2,6,9,.62) 100%), linear-gradient(0deg, rgba(2,6,9,.86) 0%, transparent 38%, rgba(2,6,9,.34) 100%); }
.journey-wayfinding { position: absolute; z-index: 3; inset: 0; pointer-events: none; }
.journey-copy { position: absolute; top: 50%; left: 0; width: min(640px, 48vw); visibility: hidden; opacity: 0; transform: translateY(-50%); pointer-events: none; isolation: isolate; }
.journey-copy::before { content: ""; position: absolute; z-index: -1; inset: -48px -64px; pointer-events: none; background: radial-gradient(ellipse at 45% 50%, rgba(2,6,9,.72) 0%, rgba(2,6,9,.48) 48%, transparent 74%); }
.journey-copy.is-right { right: 0; left: auto; }
.journey-copy[data-stage-index="0"] { top: auto; bottom: clamp(78px, 11vh, 128px); transform: none; }
.journey-copy.is-active { visibility: visible; opacity: var(--copy-opacity, 1); pointer-events: auto; }
.journey-label { display: flex; align-items: center; gap: 14px; margin: 0; color: #e1bc7c; font-size: .72rem; font-weight: 760; letter-spacing: .18em; text-transform: uppercase; }
.journey-copy h1, .journey-copy h2 { max-width: 640px; margin: .26em 0 .28em; font-family: var(--serif); font-weight: 400; letter-spacing: -.043em; line-height: 1.02; text-wrap: balance; }
.journey-copy h1 { font-size: clamp(3.8rem, 7.1vw, 7.7rem); }
.journey-copy h2 { font-size: clamp(2.8rem, 5.1vw, 5.6rem); }
.journey-detail { max-width: 560px; margin: 0; color: #e3e9ec; font-size: clamp(1rem, 1.28vw, 1.18rem); line-height: 1.6; text-wrap: pretty; }
.journey-copy .hero-actions { margin-top: 26px; gap: 22px; }
.journey-note { position: absolute; z-index: 3; right: clamp(22px, 3vw, 54px); bottom: 26px; color: #819099; font-size: .58rem; letter-spacing: .17em; text-transform: uppercase; }
.hero-kicker { color: var(--gold); }
.hero-lead { max-width: 690px; margin: 0; color: #c3ced4; font-size: clamp(1rem, 1.35vw, 1.22rem); line-height: 1.55; }
.hero-actions { display: flex; align-items: center; gap: 28px; margin-top: 32px; }
.hero-actions.centered { justify-content: center; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 0 23px; border: 1px solid var(--line-strong); border-radius: 999px; font-size: 0.78rem; font-weight: 750; letter-spacing: .045em; transition: transform 180ms ease, background 180ms ease, border-color 180ms ease; }
.button:hover { transform: translateY(-2px); }
.button.primary { background: #edf4f5; border-color: #edf4f5; color: #061018; }
.button.primary:hover { background: white; border-color: white; }
.quiet-link { display: inline-flex; align-items: center; gap: 7px; min-height: 44px; color: #e1e8eb; border-bottom: 1px solid rgba(225,232,235,.28); font-size: 0.86rem; }
.quiet-link:hover { border-color: var(--cyan); }
.scroll-cue { position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%); display: grid; justify-items: center; gap: 10px; color: #c2cdd3; font-size: .61rem; letter-spacing: .16em; text-transform: uppercase; }
.signal-cue { position: relative; display: block; width: 66px; height: 10px; border-bottom: 1px solid rgba(172,206,219,.5); border-radius: 0 0 9px 0; }
.signal-cue::after { content: ""; position: absolute; right: 0; bottom: 0; width: 1px; height: 8px; background: rgba(172,206,219,.5); }
.signal-cue > i { position: absolute; left: 0; bottom: -2px; width: 5px; height: 3px; border-radius: 2px; background: #a4e7f3; animation: guided-signal 3.6s cubic-bezier(.4,0,.3,1) infinite; }
.journey-track:not([data-stage="0"]) .scroll-cue { opacity: 0; transition: opacity 200ms ease; }
@keyframes guided-signal { 0%,12% { opacity: 0; transform: translateX(0); } 24% { opacity: .9; } 70% { opacity: .8; transform: translateX(57px); } 80%,100% { opacity: 0; transform: translateX(57px); } }

/* Home editorial sequence */
.thesis-section { background: #080e14; border-bottom: 1px solid var(--line); }
.thesis-grid { display: grid; grid-template-columns: .34fr 1.15fr .74fr; gap: clamp(30px, 5vw, 88px); align-items: start; }
.thesis-grid h2, .editorial-copy h2, .sequence-heading h2, .landscape-heading h2, .final-thesis h2, .content-lead h2, .index-heading h2, .interface-grid h2, .page-close h2, .about-manifesto h2, .about-availability h2, .reference-note h2, .handoff-card h2 { margin: 0; font-family: var(--serif); font-size: clamp(2.7rem, 5.2vw, 5.3rem); font-weight: 400; letter-spacing: -.052em; line-height: .98; text-wrap: balance; }
.thesis-grid p { margin: 4px 0 0; color: var(--ink-muted); font-size: clamp(1.08rem, 1.55vw, 1.42rem); line-height: 1.65; }
.pathway-section { padding-bottom: clamp(80px, 10vw, 150px); background: #080e14; }
.pathway-intro { display: flex; justify-content: space-between; gap: 40px; align-items: end; margin-bottom: 34px; }
.pathway-intro p { max-width: 560px; margin: 0; color: var(--ink-muted); }
.pathway-list { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pathway-list article { position: relative; min-height: 360px; padding: 34px 28px 38px; border-right: 1px solid var(--line); overflow: hidden; }
.pathway-list article:last-child { border-right: 0; }
.pathway-list article > i { position: absolute; inset: auto 0 0; height: 2px; background: var(--cyan); transform: scaleX(0); transform-origin: left; transition: transform 400ms ease; }
.pathway-list article:hover > i { transform: scaleX(1); }
.pathway-list article > span { color: var(--gold); font-size: .7rem; letter-spacing: .16em; }
.pathway-list h3 { margin: 68px 0 18px; font-size: clamp(1.6rem, 2.3vw, 2.45rem); font-weight: 520; letter-spacing: .05em; text-transform: uppercase; }
.pathway-list p { margin: 0; color: var(--ink-muted); font-size: .94rem; }
.editorial-feature { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(340px, .85fr); gap: clamp(50px, 8vw, 126px); align-items: center; }
.editorial-feature.reverse { grid-template-columns: minmax(340px, .85fr) minmax(0, 1.15fr); }
.editorial-feature.reverse .editorial-image { order: 2; }
.editorial-image { position: relative; margin: 0; overflow: hidden; background: var(--surface-2); aspect-ratio: 4 / 3; }
.editorial-image::after { content: ""; position: absolute; inset: 0; border: 1px solid rgba(255,255,255,.08); pointer-events: none; }
.editorial-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.4s cubic-bezier(.2,.8,.2,1), filter 1s ease; }
.editorial-image:hover img { transform: scale(1.035); filter: contrast(1.04); }
.editorial-image figcaption { position: absolute; inset: auto 16px 12px auto; padding: 5px 8px; color: #aeb9bf; background: rgba(3,7,10,.72); font-size: .58rem; letter-spacing: .08em; text-transform: uppercase; }
.editorial-copy h2 { margin: 18px 0 28px; }
.editorial-copy p { margin: 0 0 28px; color: var(--ink-muted); font-size: clamp(1.02rem, 1.4vw, 1.22rem); }
.sequence-section { background: #091118; border-block: 1px solid var(--line); }
.sequence-heading { display: grid; grid-template-columns: .38fr 1fr; gap: 48px; align-items: end; margin-bottom: 58px; }
.sequence-list { display: grid; grid-template-columns: repeat(5, 1fr); margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.sequence-list li { min-height: 290px; padding: 30px 24px; border-right: 1px solid var(--line); }
.sequence-list li:last-child { border-right: 0; }
.sequence-list b { color: var(--gold); font-size: .69rem; font-weight: 550; letter-spacing: .14em; }
.sequence-list h3 { margin: 54px 0 14px; font-size: 1.1rem; font-weight: 650; letter-spacing: .12em; text-transform: uppercase; }
.sequence-list p { margin: 0; color: var(--ink-muted); font-size: .87rem; }
.landscape-section { background: #091118; border-block: 1px solid var(--line); }
.landscape-heading { display: grid; grid-template-columns: .3fr 1.15fr .55fr; gap: clamp(30px, 5vw, 80px); align-items: end; margin-bottom: 70px; }
.landscape-heading p { margin: 0; color: var(--ink-muted); }
.landscape-list { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); }
.landscape-list article { position: relative; min-height: 282px; padding: 30px 30px 48px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.landscape-list article:nth-child(3n) { border-right: 0; }
.landscape-list article:nth-child(n+4) { border-bottom: 0; }
.landscape-list b { position: absolute; bottom: 20px; right: 30px; color: #8c9da7; font-size: .65rem; font-weight: 500; letter-spacing: .08em; }
.landscape-card-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 52px; }
.landscape-card-top img { flex: 0 0 52px; width: 52px; height: 52px; }
.landscape-list span { color: var(--cyan); font-size: .65rem; letter-spacing: .16em; text-transform: uppercase; }
.landscape-list h3 { max-width: 380px; margin: 34px 0 0; font-family: var(--serif); font-size: clamp(1.75rem, 2.5vw, 2.7rem); font-weight: 400; letter-spacing: -.035em; line-height: 1.08; }
.final-thesis { text-align: center; overflow: hidden; background: radial-gradient(circle at 50% 100%, rgba(42,134,170,.16), transparent 45%); }
.final-thesis-inner { max-width: 1040px; }
.final-thesis h2 { margin: 18px 0 16px; font-size: clamp(3.5rem, 8vw, 8rem); }
.final-thesis p { max-width: 700px; margin: 0 auto; color: var(--ink-muted); font-size: 1.15rem; }
.acquisition-close { background: radial-gradient(circle at 50% 100%, rgba(42,134,170,.18), transparent 46%), #050b10; }

/* Internal pages */
.internal-hero { position: relative; min-height: min(86svh, 960px); display: flex; align-items: end; padding-top: 110px; overflow: hidden; background: #050a0e; isolation: isolate; }
.internal-hero.text-only { min-height: 72svh; }
.internal-hero-media { position: absolute; z-index: -4; inset: 0; }
.internal-hero-media, .internal-hero-media img { width: 100%; height: 100%; }
.internal-hero-media img { object-fit: cover; object-position: center; animation: internal-breathe 12s ease-in-out infinite alternate; }
.internal-hero-shade { position: absolute; z-index: -2; inset: 0; background: linear-gradient(0deg, rgba(4,8,12,.96) 3%, rgba(4,8,12,.46) 58%, rgba(4,8,12,.55)), linear-gradient(90deg, rgba(4,8,12,.8), transparent 72%); }
.internal-hero-copy { padding-bottom: clamp(70px, 9vw, 126px); }
.hero-enter { animation: hero-enter 900ms cubic-bezier(.2,.8,.2,1) both; }
.internal-hero-copy h1 { max-width: 1050px; margin: .21em 0 .23em; font-family: var(--serif); font-size: clamp(3.8rem, 7.7vw, 8.2rem); font-weight: 400; letter-spacing: -.058em; line-height: .91; text-wrap: balance; }
.internal-hero-copy p { max-width: 720px; margin: 0; color: #c0cbd1; font-size: clamp(1.05rem, 1.5vw, 1.28rem); }
.hero-coordinate { position: absolute; right: 28px; bottom: 26px; color: #7e8a91; font-size: .58rem; letter-spacing: .18em; writing-mode: vertical-rl; }
.legal-orbit { position: absolute; z-index: -3; inset: 0; overflow: hidden; background: radial-gradient(circle at 70% 48%, rgba(51,139,173,.13), transparent 38%); }
.legal-orbit i { position: absolute; width: min(56vw, 750px); aspect-ratio: 1; left: 57%; top: 50%; border: 1px solid rgba(126,223,255,.15); border-radius: 50%; transform: translate(-50%,-50%); }
.legal-orbit i:nth-child(2) { width: min(38vw,520px); border-color: rgba(215,173,104,.13); }
.legal-orbit i:nth-child(3) { width: min(19vw,260px); }
@keyframes internal-breathe { from { transform: scale(1.015); } to { transform: scale(1.06) translate3d(-.6%, -.3%, 0); } }
@keyframes hero-enter { from { opacity: .35; transform: translateY(14px); } to { opacity: 1; transform: none; } }

.content-lead { background: #080e14; }
.content-lead-grid { display: grid; grid-template-columns: .3fr 1fr .65fr; gap: clamp(30px, 5vw, 84px); align-items: start; }
.content-lead p { margin: 4px 0 0; color: var(--ink-muted); font-size: 1.14rem; }
.layer-index, .application-index, .reference-index, .about-principles { padding-bottom: clamp(100px, 12vw, 190px); }
.index-heading { display: grid; grid-template-columns: .3fr 1fr; gap: 50px; align-items: end; padding: 60px 0; border-bottom: 1px solid var(--line); }
.index-list article { display: grid; grid-template-columns: 80px minmax(230px,.7fr) 1fr; gap: clamp(24px, 5vw, 78px); align-items: start; padding: 38px 0; border-bottom: 1px solid var(--line); scroll-margin-top: 100px; }
.index-list b, .application-index article > b, .reference-index article > b, .about-principles article > b { color: var(--gold); font-size: .68rem; font-weight: 600; letter-spacing: .15em; }
.technical-card-marker { display: grid; justify-items: start; gap: 10px; }
.technical-card-marker img { width: 52px; height: 52px; }
.technical-card-marker b { color: #778892; font-size: .6rem; font-weight: 550; letter-spacing: .12em; }
.index-list h3 { margin: 0; font-family: var(--serif); font-size: 2rem; font-weight: 400; letter-spacing: -.03em; }
.index-list p { margin: 2px 0 0; color: var(--ink-muted); }
.interface-section { background: #0a1219; border-block: 1px solid var(--line); }
.interface-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(50px, 9vw, 140px); }
.interface-notes { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); }
.interface-notes article { min-height: 210px; padding: 26px 22px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.interface-notes article:nth-child(2n) { border-right: 0; }
.interface-notes b { color: var(--cyan); font-size: .75rem; letter-spacing: .13em; text-transform: uppercase; }
.interface-notes p { color: var(--ink-muted); font-size: .93rem; }
.page-close { text-align: center; }
.page-close .site-shell { max-width: 970px; }
.page-close h2 { margin: 16px auto 30px; }
.page-close p { max-width: 720px; margin: 0 auto; color: var(--ink-muted); font-size: 1.1rem; }
.application-index { display: grid; grid-template-columns: 1fr 1fr; }
.application-index article { display: grid; grid-template-columns: 50px 1fr; gap: 0 22px; min-height: 300px; padding: 44px 38px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.application-index article:nth-child(2n) { border-right: 0; }
.application-index h2 { margin: 0; font-family: var(--serif); font-size: clamp(2rem,3.1vw,3.25rem); font-weight: 400; letter-spacing: -.04em; line-height: 1.05; }
.application-index p { grid-column: 2; color: var(--ink-muted); }
.application-index .technical-card-marker { grid-row: 1 / span 2; }
.reference-intro .site-shell { display: grid; grid-template-columns: .3fr 1fr; gap: 50px; }
.reference-intro p { grid-column: 2; max-width: 850px; margin: 0; color: var(--ink-muted); font-size: 1.18rem; }
.reference-index { border-top: 1px solid var(--line); }
.reference-index article { display: grid; grid-template-columns: 45px 80px minmax(0,1fr) 130px; gap: 26px; align-items: start; padding: 36px 0; border-bottom: 1px solid var(--line); }
.reference-index article > span { color: var(--cyan); font-size: .72rem; letter-spacing: .12em; }
.reference-index h2 { margin: 0; font-family: var(--serif); font-size: clamp(1.65rem,2.4vw,2.6rem); font-weight: 400; letter-spacing: -.03em; line-height: 1.08; }
.reference-index p { max-width: 780px; margin: 12px 0 0; color: var(--ink-muted); font-size: .92rem; }
.reference-index .journal { color: #d2dce0; font-size: .78rem; letter-spacing: .04em; }
.reference-index a { min-height: 44px; display: inline-flex; align-items: center; justify-content: end; color: var(--cyan); font-size: .75rem; text-align: right; }
.reference-note { background: #091118; }
.reference-note .site-shell { max-width: 980px; text-align: center; }
.reference-note p { max-width: 720px; margin: 22px auto 0; color: var(--ink-muted); }
.about-manifesto .site-shell { max-width: 1080px; text-align: center; }
.about-manifesto h2 { margin: 18px auto; }
.about-manifesto p { color: var(--ink-muted); font-size: 1.18rem; }
.about-principles { display: grid; grid-template-columns: 1fr 1fr; }
.about-principles article { min-height: 340px; padding: 44px 38px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.about-principles article:nth-child(2n) { border-right: 0; }
.about-principles h2 { margin: 70px 0 16px; font-family: var(--serif); font-size: 2.7rem; font-weight: 400; letter-spacing: -.04em; }
.about-principles p { color: var(--ink-muted); }
.about-availability { border-block: 1px solid var(--line); background: radial-gradient(circle at 82% 48%, rgba(57,145,179,.13), transparent 35%), #091118; }
.about-availability .site-shell { display: grid; grid-template-columns: .35fr 1fr .55fr; gap: clamp(30px, 5vw, 76px); align-items: start; }
.about-availability p { margin: 4px 0 0; color: var(--ink-muted); font-size: 1.08rem; }
.about-availability .button { justify-self: start; }
.handoff-section { min-height: 70svh; display: flex; align-items: center; }
.handoff-card { display: grid; grid-template-columns: 1fr .5fr; gap: 70px; align-items: end; padding: clamp(42px,7vw,90px); border: 1px solid var(--line-strong); background: radial-gradient(circle at 85% 20%, rgba(61,155,189,.14), transparent 34%), #0b141c; }
.handoff-card h2 { margin: 18px 0 24px; }
.handoff-card p { max-width: 710px; color: var(--ink-muted); }
.handoff-action { display: grid; justify-items: start; gap: 16px; }
.handoff-action small { color: var(--ink-dim); }
.legal-content { background: #070d12; }
.legal-measure { max-width: 900px; }
.legal-measure article { padding: 0 0 34px; }
.legal-measure h2 { margin: 0 0 10px; font-family: var(--serif); font-size: clamp(1.7rem,2.4vw,2.5rem); font-weight: 400; letter-spacing: -.025em; }
.legal-measure p { margin: 0; color: #b2c0c8; }
.legal-date { margin-top: 24px; color: var(--ink-dim); font-size: .82rem; }

/* 404 */
.not-found-page { position: relative; min-height: 100svh; display: grid; align-items: center; overflow: hidden; background: radial-gradient(circle at 72% 48%, rgba(55,143,177,.12), transparent 32%), #050a0e; }
.not-found-copy { position: relative; z-index: 2; }
.not-found-copy h1 { max-width: 900px; margin: .2em 0; font-family: var(--serif); font-size: clamp(4rem, 9vw, 9rem); font-weight: 400; letter-spacing: -.06em; line-height: .88; }
.not-found-copy p { max-width: 630px; margin-bottom: 30px; color: var(--ink-muted); font-size: 1.12rem; }
.not-found-visual i { position: absolute; left: 68%; top: 50%; width: 38vw; max-width: 600px; aspect-ratio: 1; transform: translate(-50%,-50%); border: 1px solid var(--line); border-radius: 50%; }
.not-found-visual i:nth-child(2) { width: 22vw; max-width: 340px; border-color: rgba(126,223,255,.2); }
.not-found-visual span { position: absolute; left: 47%; right: 3%; top: 50%; height: 1px; background: linear-gradient(90deg, var(--cyan), transparent); transform: rotate(-9deg); }

/* Footer */
.site-footer { padding: 78px 0 24px; border-top: 1px solid var(--line); background: #04080c; }
.footer-grid { display: grid; grid-template-columns: 1.4fr .55fr .55fr .8fr; gap: clamp(36px,5vw,80px); }
.footer-identity img { width: min(320px, 90%); }
.footer-identity p { max-width: 500px; margin: 20px 0 0; color: var(--ink-dim); font-size: .84rem; }
.footer-grid nav { display: grid; align-content: start; gap: 8px; font-size: .78rem; }
.footer-grid nav a { min-height: 44px; display: flex; align-items: center; color: #aab7be; }
.footer-grid nav a:hover { color: white; }
.footer-inquiry { display: grid; align-content: start; gap: 10px; }
.footer-inquiry a { min-height: 44px; display: flex; align-items: center; color: var(--cyan); font-size: .88rem; }
.footer-inquiry small { color: var(--ink-dim); font-size: .67rem; }
.footer-base { display: flex; justify-content: space-between; margin-top: 62px; padding-top: 20px; border-top: 1px solid var(--line); color: #64727b; font-size: .66rem; letter-spacing: .04em; }

[data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity 850ms ease, transform 850ms cubic-bezier(.2,.8,.2,1); }
[data-reveal].is-visible { opacity: 1; transform: none; }

@media (max-width: 1100px) {
  .site-shell { width: min(calc(100% - 48px), var(--max)); }
  .journey-copy h1 { font-size: clamp(3.55rem, 8vw, 6.2rem); }
  .journey-copy h2 { font-size: clamp(2.7rem, 5.6vw, 5rem); }
  .thesis-grid, .landscape-heading, .content-lead-grid { grid-template-columns: .28fr 1fr; }
  .thesis-grid p, .landscape-heading p, .content-lead p { grid-column: 2; }
  .pathway-list { grid-template-columns: 1fr 1fr; }
  .pathway-list article:nth-child(2) { border-right: 0; }
  .pathway-list article:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .editorial-feature, .editorial-feature.reverse { grid-template-columns: 1fr; }
  .editorial-feature.reverse .editorial-image { order: 0; }
  .editorial-image { width: min(100%, 900px); }
  .editorial-copy { max-width: 780px; }
  .sequence-list { grid-template-columns: 1fr; }
  .sequence-list li { min-height: auto; display: grid; grid-template-columns: 55px 130px 1fr; gap: 22px; padding: 24px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .sequence-list h3 { margin: 0; }
  .sequence-list p { margin: 0; }
  .footer-grid { grid-template-columns: 1.4fr .6fr .6fr; }
  .footer-inquiry { grid-column: 1 / -1; }
}

@media (max-width: 820px) {
  .site-header { height: 72px; }
  .header-brand { width: 205px; }
  .menu-button { display: block; }
  .primary-navigation { position: fixed; top: 70px; left: 18px; right: 18px; display: none; padding: 24px; background: rgba(5,10,15,.98); border: 1px solid var(--line-strong); box-shadow: 0 24px 70px rgba(0,0,0,.42); }
  .primary-navigation.is-open { display: flex; flex-direction: column; align-items: stretch; gap: 5px; }
  .primary-navigation > a { justify-content: space-between; padding-inline: 4px; }
  .primary-navigation .nav-inquiry { justify-content: center; margin-top: 8px; }
  .thesis-grid, .landscape-heading, .content-lead-grid, .sequence-heading, .index-heading, .reference-intro .site-shell { grid-template-columns: 1fr; gap: 24px; }
  .thesis-grid p, .landscape-heading p, .content-lead p, .reference-intro p { grid-column: 1; }
  .landscape-list { grid-template-columns: 1fr 1fr; }
  .landscape-list article:nth-child(3n) { border-right: 1px solid var(--line); }
  .landscape-list article:nth-child(2n) { border-right: 0; }
  .landscape-list article:nth-child(n+4) { border-bottom: 1px solid var(--line); }
  .landscape-list article:nth-child(n+5) { border-bottom: 0; }
  .interface-grid { grid-template-columns: 1fr; }
  .index-list article { grid-template-columns: 50px 1fr; }
  .index-list p { grid-column: 2; }
  .application-index, .about-principles { grid-template-columns: 1fr; }
  .application-index article, .about-principles article { border-right: 0; }
  .reference-index article { grid-template-columns: 45px 70px 1fr; }
  .reference-index article > a { grid-column: 3; text-align: left; }
  .handoff-card { grid-template-columns: 1fr; gap: 36px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-identity, .footer-inquiry { grid-column: 1 / -1; }
  .about-availability .site-shell { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .journey-track { height: 720svh; }
  .journey-stage { min-height: 620px; }
  .journey-world { top: auto; bottom: 0; left: 0; width: 100vw; height: 305svh; transform: translate3d(0, var(--journey-y), 0) scale(var(--journey-scale)); transform-origin: center; }
  .journey-world img { object-position: center; filter: saturate(.88) contrast(1.03) brightness(.75); }
  .journey-shade { background: linear-gradient(0deg, rgba(2,6,9,.9) 0%, rgba(2,6,9,.18) 38%, rgba(2,6,9,.2) 68%, rgba(2,6,9,.68) 100%), linear-gradient(90deg, rgba(2,6,9,.42), transparent 48%, rgba(2,6,9,.42)); }
  .journey-copy, .journey-copy.is-right { top: auto; right: auto; bottom: 68px; left: 0; width: min(92%, 620px); transform: none; }
  .journey-copy.is-right { right: 0; left: auto; }
  .journey-copy.is-active, .journey-copy[data-stage-index="0"].is-active { transform: translate3d(0, 0, 0); }
  .journey-copy h1 { font-size: clamp(3.1rem, 12.6vw, 6.2rem); }
  .journey-copy h2 { font-size: clamp(2.6rem, 10.7vw, 5rem); }
  .journey-detail { max-width: 560px; font-size: 1rem; }
  .journey-note { display: none; }
  .scroll-cue { left: auto; right: 20px; transform: none; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .site-shell { width: min(calc(100% - 32px), var(--max)); }
  .section-space { padding-block: 86px; }
  .header-brand { width: 184px; }
  .journey-stage { min-height: 580px; }
  .journey-copy, .journey-copy.is-right { bottom: 84px; width: 94%; }
  .journey-copy[data-stage-index="0"] { bottom: 84px; }
  .journey-copy::before { inset: -32px -28px; }
  .journey-copy h1 { font-size: clamp(3.1rem, 14.4vw, 4.4rem); line-height: 1.02; }
  .journey-copy h2 { font-size: clamp(2.6rem, 11.7vw, 3.7rem); line-height: 1.04; }
  .journey-copy[data-stage-index="1"] h2, .journey-copy[data-stage-index="5"] h2 { font-size: clamp(2.2rem, 10vw, 3.1rem); }
  .journey-label { font-size: .68rem; }
  .journey-detail { max-width: 100%; font-size: 1rem; }
  .journey-copy .hero-actions { gap: 12px; margin-top: 22px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 13px; margin-top: 24px; }
  .scroll-cue { display: grid; left: 16px; right: auto; bottom: 22px; justify-items: start; gap: 5px; font-size: .57rem; }
  .pathway-intro { display: grid; }
  .pathway-list { grid-template-columns: 1fr; }
  .pathway-list article { min-height: 240px; border-right: 0; border-bottom: 1px solid var(--line); }
  .pathway-list article:last-child { border-bottom: 0; }
  .pathway-list h3 { margin-top: 44px; }
  .editorial-feature { gap: 38px; }
  .editorial-image { aspect-ratio: 4 / 5; }
  .editorial-image img { object-position: center; }
  .sequence-list li { grid-template-columns: 40px 90px 1fr; gap: 10px; }
  .landscape-list { grid-template-columns: 1fr; }
  .landscape-list article, .landscape-list article:nth-child(3n), .landscape-list article:nth-child(2n), .landscape-list article:nth-child(n+5) { min-height: 220px; border-right: 0; border-bottom: 1px solid var(--line); }
  .landscape-list article:last-child { border-bottom: 0; }
  .internal-hero { min-height: 82svh; }
  .internal-hero.text-only { min-height: 68svh; }
  .internal-hero-media img { object-position: center; }
  .internal-hero-shade { background: linear-gradient(0deg, rgba(4,8,12,.97) 3%, rgba(4,8,12,.68) 55%, rgba(4,8,12,.18)); }
  .internal-hero-copy { padding-bottom: 58px; }
  .internal-hero-copy h1 { font-size: clamp(3.35rem, 15vw, 5.2rem); }
  .hero-coordinate { display: none; }
  .index-list article { grid-template-columns: 34px 1fr; gap: 16px; padding: 30px 0; }
  .index-list h3 { font-size: 1.7rem; }
  .interface-notes { grid-template-columns: 1fr; }
  .interface-notes article { border-right: 0; min-height: auto; }
  .application-index article { grid-template-columns: 48px 1fr; gap: 0 14px; min-height: 260px; padding: 34px 12px; }
  .technical-card-marker img { width: 44px; height: 44px; }
  .reference-index article { grid-template-columns: 34px 1fr; gap: 10px; }
  .reference-index article > span { grid-column: 2; }
  .reference-index article > div { grid-column: 2; }
  .reference-index article > a { grid-column: 2; }
  .about-principles article { min-height: 290px; padding: 36px 20px; }
  .about-principles h2 { margin-top: 50px; }
  .handoff-card { width: min(calc(100% - 32px), var(--max)); padding: 34px 24px; }
  .legal-measure { width: min(calc(100% - 40px), 900px); }
  .not-found-copy h1 { font-size: 4.2rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-identity, .footer-inquiry { grid-column: auto; }
  .footer-base { align-items: flex-start; flex-direction: column; gap: 8px; }
}

@media (prefers-reduced-motion: reduce), (scripting: none) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: .001ms !important; }
  .journey-track { height: auto; }
  .journey-stage { position: relative; height: auto; min-height: 0; overflow: visible; }
  .journey-world { position: relative; z-index: 0; inset: auto; display: block; width: 100%; height: auto; aspect-ratio: 2172 / 724; transform: none !important; }
  .journey-world img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
  .journey-atmosphere, .journey-shade, .journey-note, .journey-copy::before { display: none; }
  .scroll-cue { position: relative; inset: auto; display: grid; justify-items: center; padding: 22px; transform: none; opacity: 1; }
  .signal-cue > i { animation: none; opacity: .75; transform: translateX(30px); }
  .journey-wayfinding { position: relative; inset: auto; display: grid; grid-template-columns: 1fr 1fr; gap: 1px; width: 100%; background: var(--line); }
  .journey-copy, .journey-copy.is-right, .journey-copy[data-stage-index="0"] { position: relative; inset: auto; width: auto; min-height: 290px; padding: clamp(28px, 5vw, 64px); visibility: visible; opacity: 1; transform: none !important; background: #080e14; pointer-events: auto; }
  .journey-copy.is-active { opacity: 1; }
  [data-reveal] { opacity: 1; transform: none; }
}

@media (max-width: 760px) and (prefers-reduced-motion: reduce), (max-width: 760px) and (scripting: none) {
  .journey-world { display: block; width: 100%; height: auto; aspect-ratio: 941 / 1672; }
  .journey-world img { object-position: center; filter: saturate(.88) contrast(1.03) brightness(.75); }
  .journey-wayfinding { grid-template-columns: 1fr; }
  .journey-copy, .journey-copy.is-right, .journey-copy[data-stage-index="0"] { min-height: 0; }
}