:root {
  --void: #080b0b;
  --deep: #0d1211;
  --concrete-dark: #111716;
  --concrete: #89908b;
  --concrete-light: #b6bbb4;
  --steel: #c4cbc6;
  --paper: #d8d9ce;
  --phosphor: #78c4b6;
  --phosphor-dim: #457b72;
  --warning: #b9433e;
  --line: rgba(196, 203, 198, .2);
  --mono: 'Chivo Mono', monospace;
  --sans: 'Archivo', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--void); }
body { margin: 0; background: var(--void); color: var(--paper); font-family: var(--sans); overflow-x: clip; }
button, a { font: inherit; }
a { color: inherit; }
button { color: inherit; }
::selection { background: var(--phosphor); color: var(--void); }

.skip-link { position: absolute; left: -9999px; top: auto; z-index: 1000; width: 1px; height: 1px; padding: 0; overflow: hidden; white-space: nowrap; background: var(--paper); color: var(--void); }
.skip-link:focus { position: fixed; left: 12px; top: 12px; width: auto; height: auto; padding: 12px 16px; overflow: visible; }
:focus-visible { outline: 2px solid var(--phosphor); outline-offset: 4px; }

.film-grain { position: fixed; inset: 0; z-index: 90; pointer-events: none; opacity: .11; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.92' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.6'/%3E%3C/svg%3E"); mix-blend-mode: screen; }

.site-header { position: absolute; inset: 0 0 auto; z-index: 50; height: 78px; padding: 0 clamp(18px, 4vw, 68px); display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; border-bottom: 1px solid rgba(216,217,206,.22); background: linear-gradient(#080b0be6, transparent); }
.wordmark { justify-self: start; display: flex; align-items: center; gap: 11px; font-size: 10px; line-height: 1.05; letter-spacing: .13em; text-decoration: none; font-weight: 700; }
.wordmark-mark { width: 34px; height: 34px; display: grid; place-items: center; border: 1px solid var(--paper); font-family: var(--mono); font-size: 18px; }
.primary-nav { display: flex; height: 100%; }
.primary-nav a { position: relative; display: grid; place-items: center; min-width: 108px; padding: 0 18px; text-decoration: none; text-transform: uppercase; font: 500 10px var(--mono); letter-spacing: .14em; }
.primary-nav a::after { content: ''; position: absolute; left: 50%; right: 50%; bottom: 18px; height: 1px; background: var(--phosphor); transition: left .25s ease, right .25s ease; }
.primary-nav a:hover::after, .primary-nav a:focus-visible::after { left: 18px; right: 18px; }
.audio-switch { justify-self: end; min-height: 44px; padding: 0; border: 0; background: transparent; display: flex; align-items: center; gap: 10px; cursor: pointer; text-transform: uppercase; font: 500 10px var(--mono); letter-spacing: .1em; }
.audio-light { width: 9px; height: 9px; border-radius: 50%; background: #3e4744; box-shadow: inset 0 0 0 1px #727a76; }
.audio-switch[aria-pressed="true"] .audio-light { background: var(--phosphor); box-shadow: 0 0 14px rgba(120,196,182,.65); }

.hero { position: relative; min-height: 100svh; display: grid; align-items: end; isolation: isolate; overflow: hidden; background: #030505; }
.hero::before, .hero::after { content: ''; position: absolute; z-index: 8; left: 0; width: 100%; height: clamp(26px, 6vh, 78px); background: #020303; }
.hero::before { top: 0; }
.hero::after { bottom: 0; }
.hero-frame { position: absolute; inset: 0; z-index: -1; overflow: hidden; }
.hero-poster { position: absolute; inset: -4%; background: url('/assets/gen/silo9/hero.jpg') center / cover no-repeat; filter: contrast(1.12) saturate(.78) brightness(.74); animation: camera-creep 18s ease-out both; }
.hero-flare { position: absolute; top: 18%; left: -40%; width: 48%; height: 2px; background: linear-gradient(90deg, transparent, rgba(216,217,206,.8), rgba(120,196,182,.28), transparent); box-shadow: 0 0 26px 8px rgba(120,196,182,.12); transform: rotate(-2deg); animation: flare-pass 7s 1.5s ease-in-out both; }
.hero-scrim { position: absolute; inset: 0; background: radial-gradient(circle at 55% 48%, transparent 0 15%, rgba(0,0,0,.15) 45%, rgba(0,0,0,.85) 100%), linear-gradient(90deg, rgba(3,5,5,.9), transparent 55%); }
.hero-copy { position: relative; z-index: 10; width: min(780px, 70vw); margin: 0 0 clamp(96px, 13vh, 150px) clamp(18px, 6vw, 92px); }
.museum-id, .section-kicker { margin: 0 0 20px; color: var(--phosphor); font: 500 10px var(--mono); letter-spacing: .16em; }
.hero h1 { display: flex; align-items: baseline; margin: 0; line-height: .72; letter-spacing: -.085em; font-size: clamp(104px, 18vw, 270px); font-weight: 900; }
.hero h1 strong { color: transparent; -webkit-text-stroke: 2px var(--paper); font-size: 1.2em; margin-left: .025em; }
.hero-deck { max-width: 520px; margin: 34px 0 28px; color: #d6d8d0; font-size: clamp(16px, 1.5vw, 20px); line-height: 1.5; }
.descent-call { display: inline-grid; grid-template-columns: 50px auto; min-height: 50px; align-items: center; background: var(--paper); color: var(--void); text-decoration: none; text-transform: uppercase; font: 700 11px var(--mono); letter-spacing: .1em; box-shadow: 8px 8px 0 rgba(120,196,182,.2); }
.descent-call .call-arrow { height: 100%; display: grid; place-items: center; border-right: 1px solid #7e827d; font-size: 20px; transition: transform .25s ease; }
.descent-call span:last-child { padding: 0 18px; }
.descent-call:hover .call-arrow { transform: translateY(4px); }
.hero-caption { position: absolute; z-index: 10; right: clamp(18px, 4vw, 68px); bottom: 94px; display: flex; writing-mode: vertical-rl; gap: 24px; color: #9fa59f; font: 400 9px var(--mono); letter-spacing: .12em; }

.descent-section { height: 405vh; background: #050707; position: relative; isolation: isolate; }
.shaft-ledger { position: absolute; z-index: 4; inset: 24vh clamp(14px, 3vw, 48px); margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; justify-content: space-between; color: #5f6965; font-family: var(--mono); pointer-events: none; }
.shaft-ledger li { min-height: 38vh; display: grid; grid-template-columns: clamp(54px,8vw,120px) 1fr auto; align-items: start; padding-top: 16px; border-top: 1px solid rgba(120,196,182,.2); text-transform: uppercase; letter-spacing: .12em; }
.shaft-ledger b { color: transparent; -webkit-text-stroke: 1px rgba(120,196,182,.32); font-size: clamp(36px,6vw,82px); line-height:.8; font-weight: 300; }.shaft-ledger span,.shaft-ledger i { font-size: 9px; font-style: normal; color:#78837e; }
.descent-sticky { position: sticky; z-index:2; top: 0; height: 100svh; overflow: hidden; display: grid; place-items: center; background: radial-gradient(ellipse at 45% 50%, rgba(30,41,38,.96) 0, rgba(8,11,11,.94) 61%, rgba(4,6,6,.86) 100%); }
.shaft-rails { position: absolute; inset: 0; display: flex; justify-content: space-around; opacity: .18; }
.shaft-rails span { width: 2px; background: repeating-linear-gradient(to bottom, var(--steel) 0 60px, transparent 60px 76px); transform: translateY(var(--shaft-shift, 0px)); }
.elevator-cab { position: relative; z-index: 5; width: min(940px, calc(100% - 180px)); height: min(690px, 80svh); transform:translateX(-3vw); border: 1px solid #77807b; background: #101514; box-shadow: 0 0 0 10px #080b0b, 0 0 0 11px #38413e, 0 40px 100px #000; display: grid; grid-template-rows: 80px 1fr 54px; clip-path: polygon(0 0, 96% 0, 100% 6%, 100% 100%, 4% 100%, 0 94%); }
.cab-header, .cab-footer { display: flex; align-items: center; justify-content: space-between; padding: 0 28px; border-bottom: 1px solid var(--line); font: 500 10px var(--mono); letter-spacing: .12em; color: #aeb3ad; }
.cab-footer { border: 0; border-top: 1px solid var(--line); font-size: 9px; }
.floor-display { width: 104px; height: 58px; display: flex; justify-content: center; align-items: baseline; gap: 4px; border: 1px solid #34554f; background: #07100e; color: var(--phosphor); text-shadow: 0 0 12px rgba(120,196,182,.7); font-family: var(--mono); }
.floor-display span { font-size: 14px; }.floor-display strong { font-size: 38px; font-weight: 400; }
.cab-window { position: relative; overflow: hidden; margin: 20px 28px; border: 1px solid #34403d; background: linear-gradient(150deg, rgba(120,196,182,.08), transparent 40%), #050707; display: grid; place-items: center; }
.cab-window::after { content: ''; position: absolute; inset: 0; box-shadow: inset 0 0 90px #000; pointer-events: none; }
.level-streaks { position: absolute; inset: -100% 0; opacity: .2; background: repeating-linear-gradient(to bottom, transparent 0 120px, var(--phosphor) 121px 122px, transparent 123px 180px); transform: translateY(var(--streak-shift, 0px)); }
.level-copy { position: relative; z-index: 2; width: min(550px, 80%); }
.level-copy::before { display:block; margin-bottom:10px; color:#5f6f69; font:500 8px var(--mono); letter-spacing:.16em; }
.level-depth { color: var(--phosphor); font: 500 11px var(--mono); letter-spacing: .12em; }
.level-copy h2 { margin: 18px 0 15px; font-size: clamp(42px, 6vw, 78px); line-height: .95; letter-spacing: -.045em; }
.level-copy p { max-width: 47ch; color: #b9beb8; font: 400 13px/1.65 var(--mono); }
.cab-status { color: var(--phosphor); }.cab-status i { display: inline-block; width: 6px; height: 6px; border-radius: 50%; margin-right: 8px; background: currentColor; box-shadow: 0 0 10px currentColor; }
.level-rail { position: absolute; right: 26px; top: 50%; transform: translateY(-50%); display: grid; gap: 10px; font: 400 9px var(--mono); color: #69716d; }
.level-rail span { width: 28px; height: 28px; display: grid; place-items: center; border-left: 1px solid #3c4542; }
.level-rail span.active { color: var(--phosphor); border-color: var(--phosphor); }

.cutaway-section { position: relative; min-height: 950px; padding: 190px clamp(20px, 7vw, 110px) 150px; display: grid; grid-template-columns: minmax(280px, .78fr) minmax(480px, 1.22fr); gap: clamp(60px, 10vw, 170px); align-items: center; background: #d1d1c7; color: #121615; }
.cutaway-section::before { content: ''; position: absolute; inset: 0 0 auto; height: 54px; border-top: 12px solid #080b0b; border-bottom: 1px solid #6d746f; background: repeating-linear-gradient(135deg, #8f958f 0 12px, #c7c8bd 12px 24px); box-shadow: 0 12px 28px rgba(0,0,0,.24); }
.cutaway-copy { align-self: start; padding-top: 100px; }
.cutaway-section .section-kicker { color: #44655f; }
.cutaway-copy h2 { margin: 0 0 32px; max-width: 8ch; font-size: clamp(52px, 6vw, 92px); line-height: .9; letter-spacing: -.055em; }
.cutaway-copy > p:last-of-type { max-width: 49ch; color: #3d4441; line-height: 1.7; }
.material-facts { margin: 52px 0 0; border-top: 2px solid #1b211f; }
.material-facts div { padding: 15px 0; display: flex; justify-content: space-between; border-bottom: 1px solid #929790; }
.material-facts dt { text-transform: uppercase; font: 500 9px var(--mono); letter-spacing: .12em; }.material-facts dd { margin: 0; font: 500 12px var(--mono); }
.silo-diagram { position: relative; min-height: 690px; display: grid; place-items: center; border-left: 1px solid #9ea39d; }
.ground-line { position: absolute; left: 0; right: 0; top: 50px; border-top: 5px solid #1a201e; }
.ground-line::before { content: ''; position: absolute; inset: -18px 0 auto; height: 12px; background: repeating-linear-gradient(135deg, #606660 0 5px, transparent 5px 11px); }
.ground-line span { position: absolute; top: -30px; left: 16px; font: 500 9px var(--mono); letter-spacing: .12em; }
.silo-shell { width: min(400px, 75%); margin-top: 45px; padding: 20px 25px 25px; border: 8px double #29302e; border-top: 0; border-radius: 0 0 190px 190px; position: relative; }
.silo-shell::before { content: ''; position: absolute; top: -35px; left: 25%; right: 25%; height: 35px; border: 8px solid #29302e; border-bottom: 0; }
.core-line { position: absolute; left: 50%; top: 0; bottom: 60px; border-left: 2px dashed #747a75; }
.silo-shell ol { list-style: none; margin: 0; padding: 0; position: relative; }
.silo-shell li { min-height: 55px; display: grid; grid-template-columns: 50px 1fr; align-items: center; border-bottom: 1px solid #646a66; font: 500 10px var(--mono); text-transform: uppercase; letter-spacing: .06em; }
.silo-shell li b { font-size: 18px; }.silo-shell li span { padding-left: 22px; }
.silo-shell .diagram-active { margin: 10px -10px 0; padding: 0 10px; color: #d8d9ce; background: #233e39; border: 0; }
.depth-scale { position: absolute; right: 0; top: 65px; bottom: 30px; display: flex; flex-direction: column; justify-content: space-between; font: 500 9px var(--mono); color: #535956; }

.ceremony-section { padding: 140px clamp(16px, 5vw, 80px); background: #0a0e0d; }
.ceremony-heading { max-width: 1250px; margin: 0 auto 64px; display: grid; grid-template-columns: 1fr minmax(280px, 430px); gap: 60px; align-items: end; }
.ceremony-heading h2 { margin: 0; font-size: clamp(54px, 7.5vw, 112px); line-height: .86; letter-spacing: -.06em; max-width: 8ch; }
.ceremony-heading h2 span { white-space: nowrap; }
.ceremony-heading > p { color: #aeb4ae; line-height: 1.7; }
.control-room { position: relative; max-width: 1320px; min-height: 740px; margin: 0 auto; padding: 52px clamp(18px, 4vw, 62px); overflow: hidden; border: 1px solid #53605c; background: radial-gradient(circle at 50% 60%, rgba(185,67,62,.13), transparent 45%), linear-gradient(#18201e, #0b0f0e); box-shadow: inset 0 0 120px #000; transition: background 1.2s ease, box-shadow 1.2s ease; }
.control-room::before { content: ''; position: absolute; inset: 0; background: repeating-linear-gradient(90deg, transparent 0 7.9%, rgba(255,255,255,.018) 8%); pointer-events: none; }
.glass-case { position: absolute; inset: 24px; border: 1px solid rgba(190,215,208,.28); box-shadow: inset 0 0 35px rgba(120,196,182,.05); pointer-events: none; }
.glass-case::after { content: ''; position: absolute; width: 75%; height: 1px; top: 22%; left: 8%; background: linear-gradient(90deg, transparent, rgba(255,255,255,.32), transparent); transform: rotate(-12deg); }
.glass-case span { position: absolute; right: 12px; top: 12px; color: #74817d; font: 400 8px var(--mono); letter-spacing: .12em; }
.warning-lamp { position: relative; z-index: 2; display: flex; align-items: center; gap: 12px; color: #cdd0c8; font: 500 9px var(--mono); letter-spacing: .12em; }
.warning-lamp span { width: 14px; height: 14px; border-radius: 50%; background: var(--warning); box-shadow: 0 0 18px rgba(185,67,62,.65), inset 0 0 0 3px #702c29; transition: background 1s, box-shadow 1s; }
.console-instruction { position: relative; z-index: 2; margin: 58px auto 38px; text-align: center; display: grid; gap: 10px; }
.console-instruction span { color: var(--phosphor); font: 500 10px var(--mono); letter-spacing: .16em; }.console-instruction strong { font-size: clamp(28px, 4vw, 52px); letter-spacing: -.035em; }.console-instruction small { color: #9fa69f; font: 400 10px/1.5 var(--mono); }
.keys-panel { position: relative; z-index: 3; display: grid; grid-template-columns: 1fr 120px 1fr; align-items: center; gap: 25px; max-width: 980px; margin: auto; }
.key-station { min-height: 300px; border: 1px solid #5b6461; background: linear-gradient(145deg, #363d3a, #121716 65%); box-shadow: inset 0 1px #8a918d, 12px 15px 0 #050706; cursor: pointer; display: grid; grid-template-rows: auto 1fr auto; place-items: center; padding: 24px; user-select: none; touch-action: none; transition: transform .18s ease, border-color .18s ease; }
.key-station:active { transform: translate(2px, 2px); }.key-station.engaged { border-color: var(--phosphor); }
.station-label, .turn-label { font: 500 9px var(--mono); letter-spacing: .15em; color: #aab0aa; }
.keyway { width: 124px; height: 124px; border-radius: 50%; display: grid; place-items: center; border: 9px solid #8b928e; background: radial-gradient(circle, #353b39 0 24%, #111514 25% 42%, #67706b 43% 52%, #202624 53%); box-shadow: inset 8px 10px 13px #080a0a, 0 4px 0 #080a0a; }
.keyway i { display: block; width: 17px; height: 95px; background: linear-gradient(90deg, #747c77, #d2d5cf 46%, #777e7a); clip-path: polygon(32% 0, 68% 0, 72% 58%, 100% 72%, 100% 100%, 0 100%, 0 72%, 28% 58%); transform: rotate(-35deg); transition: transform .32s cubic-bezier(.2,.9,.3,1); box-shadow: 3px 4px 7px #000; transform-origin: 50% 50%; }
.key-station.engaged .keyway i { transform: rotate(35deg); }
.separation-rule { color: #6b7470; display: flex; align-items: center; gap: 8px; font: 500 9px var(--mono); }.separation-rule::before,.separation-rule::after { content: ''; flex: 1; height: 1px; background: #4b5451; }
.sync-meter { position: relative; z-index: 2; max-width: 980px; height: 3px; margin: 42px auto 0; background: #242b29; overflow: hidden; }.sync-meter span { display: block; width: 0; height: 100%; background: var(--phosphor); box-shadow: 0 0 10px var(--phosphor); }
.ceremony-feedback { position: relative; z-index: 2; margin: 18px 0 0; text-align: center; color: #99a19b; font: 400 10px var(--mono); letter-spacing: .07em; }
.truth-plaque { position: absolute; z-index: 6; inset: 50% auto auto 50%; width: min(650px, calc(100% - 36px)); padding: clamp(24px, 4vw, 50px); background: #d2d2c7; color: #111514; border: 8px double #7f847e; box-shadow: 0 30px 100px #000; transform: translate(-50%, -44%) scale(.94); opacity: 0; visibility: hidden; transition: transform .8s cubic-bezier(.15,.9,.2,1), opacity .6s, visibility .6s; }
.truth-plaque span { color: #385b54; font: 600 9px var(--mono); letter-spacing: .15em; }.truth-plaque blockquote { margin: 24px 0; font-size: clamp(30px, 5vw, 56px); line-height: 1.03; font-weight: 700; letter-spacing: -.04em; }.truth-plaque p { max-width: 50ch; line-height: 1.6; color: #414643; }.truth-plaque button { margin-top: 18px; padding: 12px 0 5px; border: 0; border-bottom: 1px solid #111514; background: transparent; color: #111514; cursor: pointer; text-transform: uppercase; font: 600 9px var(--mono); letter-spacing: .12em; }
.control-room.resolved { background: radial-gradient(circle at 50% 45%, #59625d 0, #29302e 55%, #161b1a); box-shadow: inset 0 0 70px rgba(216,217,206,.14); }
.control-room.resolved .warning-lamp span { background: #515a56; box-shadow: inset 0 0 0 3px #303633; }.control-room.resolved .keys-panel,.control-room.resolved .console-instruction,.control-room.resolved .sync-meter,.control-room.resolved .ceremony-feedback { filter: blur(3px); opacity: .22; transition: filter .8s, opacity .8s; }.control-room.resolved .truth-plaque { opacity: 1; visibility: visible; transform: translate(-50%, -50%) scale(1); }

.log-section { padding: 150px clamp(20px, 7vw, 110px); background: #c9c9be; color: #151917; display: grid; grid-template-columns: minmax(260px, .65fr) minmax(540px, 1.35fr); gap: clamp(60px, 10vw, 160px); }
.log-title-block { position: sticky; top: 120px; align-self: start; }.log-section .section-kicker { color: #3c5e57; }.log-title-block h2 { margin: 0 0 30px; max-width: 10ch; font-size: clamp(48px, 6vw, 88px); line-height: .92; letter-spacing: -.05em; }.log-title-block > p:last-child { max-width: 45ch; line-height: 1.65; color: #454a47; }
.logbook { position: relative; align-self: start; margin-top: 70px; padding: 12px 28px 60px; border: 1px solid #6c716d; box-shadow: 18px 18px 0 rgba(50,56,53,.12); background: repeating-linear-gradient(#d6d6ca 0 49px, #a8aaa3 50px); transform: rotate(.6deg); }
.log-header,.logbook article { display: grid; grid-template-columns: 90px 1fr 60px; gap: 20px; align-items: center; min-height: 100px; border-bottom: 1px solid #7d817c; }
.log-header { min-height: 50px; font: 600 9px var(--mono); letter-spacing: .12em; }.logbook article time,.logbook article b { font: 600 12px var(--mono); }.logbook article p { line-height: 1.5; }.logbook article b { justify-self: center; border: 1px solid #555b57; padding: 8px; }
.log-stamp { position: absolute; right: 25px; bottom: 12px; color: #75413d; border: 3px double #75413d; padding: 8px 12px; transform: rotate(-7deg); text-align: center; font: 700 12px/1.1 var(--mono); opacity: .75; }

.dismantling-section { padding: 145px 0 170px; background: #101514; overflow: hidden; }
.dismantling-intro { padding: 0 clamp(20px, 8vw, 130px); display: grid; grid-template-columns: 1.2fr .8fr; gap: 80px; align-items: end; }
.dismantling-intro h2 { margin: 0; font-size: clamp(55px, 9vw, 136px); line-height: .86; letter-spacing: -.065em; }.dismantling-intro p { color: #aeb4ae; max-width: 49ch; line-height: 1.7; }
.evidence-strip { width: calc(100% + 120px); margin: 100px -60px 0; display: grid; grid-template-columns: 1.05fr .85fr 1fr; gap: 25px; align-items: start; }
.evidence-photo { margin: 0; padding: 11px 11px 18px; background: #d0d0c5; color: #171b19; box-shadow: 0 24px 70px #030404; }.evidence-photo svg { display: block; width: 100%; filter: grayscale(.55) contrast(1.08); }.evidence-photo figcaption { display: grid; grid-template-columns: 90px 1fr; gap: 10px; margin-top: 13px; font: 500 10px/1.45 var(--mono); }.evidence-photo figcaption b { color: #365c54; }.photo-one { transform: rotate(-2.3deg) translateY(20px); }.photo-two { transform: rotate(1.8deg) translateY(95px); }.photo-three { transform: rotate(-.8deg); }

.memorial-section { min-height: 850px; padding: 160px 20px 120px; text-align: center; display: flex; flex-direction: column; align-items: center; justify-content: center; background: radial-gradient(circle, #17201e 0, #080b0b 65%); }
.memorial-mark { width: 110px; height: 110px; margin-bottom: 45px; display: grid; place-items: center; border: 1px solid var(--phosphor-dim); border-radius: 50%; box-shadow: 0 0 0 12px #080b0b, 0 0 0 13px #31413d; color: var(--phosphor); font: 300 50px var(--mono); }.memorial-section h2 { margin: 0; max-width: 980px; font-size: clamp(48px, 7vw, 100px); line-height: .95; letter-spacing: -.055em; }.memorial-section > p { max-width: 650px; margin: 36px auto 50px; color: #adb3ad; font-size: 18px; line-height: 1.6; }.memorial-section dl { width: min(850px, 100%); margin: 0; border-top: 1px solid var(--line); }.memorial-section dl div { display: grid; grid-template-columns: 1fr 2fr; padding: 17px 0; border-bottom: 1px solid var(--line); text-align: left; }.memorial-section dt { font: 500 10px var(--mono); text-transform: uppercase; letter-spacing: .12em; color: var(--phosphor); }.memorial-section dd { margin: 0; color: #c2c6c0; }.visit-link { margin-top: 44px; min-height: 44px; display: inline-flex; align-items: center; gap: 18px; color: var(--paper); text-underline-offset: 7px; font: 500 11px var(--mono); text-transform: uppercase; letter-spacing: .1em; }.visit-link span { color: var(--phosphor); font-size: 17px; }

.site-footer { min-height: 115px; padding: 30px clamp(18px, 5vw, 80px); display: flex; align-items: center; justify-content: space-between; gap: 30px; border-top: 1px solid var(--line); background: #050707; color: #8d958f; font: 400 10px var(--mono); letter-spacing: .05em; }.site-footer p { margin: 0; }.site-footer nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 28px; }.site-footer a { min-height: 44px; display: inline-flex; align-items: center; text-underline-offset: 5px; }

body:not(.loaded) .site-header, body:not(.loaded) .hero-copy, body:not(.loaded) .hero-caption { opacity: 0; transform: translateY(18px); }
.loaded .site-header { animation: reveal .7s .1s both; }.loaded .hero-copy { animation: reveal .9s .35s both; }.loaded .hero-caption { animation: reveal .8s .7s both; }
@keyframes reveal { from { opacity: 0; transform: translateY(18px); filter: blur(5px); } to { opacity: 1; transform: translateY(0); filter: blur(0); } }
@keyframes camera-creep { from { transform: scale(1.08) translateX(-1.5%); } to { transform: scale(1.02) translateX(1%); } }
@keyframes flare-pass { 0% { left: -45%; opacity: 0; } 30% { opacity: .8; } 100% { left: 110%; opacity: 0; } }

@media (max-width: 900px) {
  .site-header { grid-template-columns: 1fr auto auto; gap: 22px; }.primary-nav a { min-width: 82px; padding-inline: 10px; }
  .hero-copy { width: calc(100% - 40px); margin-left: 20px; }.hero-caption { display: none; }
  .cutaway-section,.log-section { grid-template-columns: 1fr; gap: 40px; }.cutaway-copy { padding-top: 0; }.silo-diagram { border-left: 0; min-height: 680px; }.log-title-block { position: static; }.logbook { margin-top: 20px; }
  .ceremony-heading,.dismantling-intro { grid-template-columns: 1fr; gap: 30px; }
  .keys-panel { grid-template-columns: 1fr 50px 1fr; gap: 12px; }.separation-rule { transform: rotate(90deg); }.key-station { min-height: 280px; padding: 16px; }.keyway { width: 104px; height: 104px; }.keyway i { height: 80px; }
  .evidence-strip { width: calc(100% + 50px); margin-left: -25px; grid-template-columns: 1.1fr .9fr; }.photo-three { grid-column: 1 / -1; width: 65%; justify-self: center; margin-top: 50px; }
}

@media (max-width: 600px) {
  .site-header { height: 110px; padding: 0 16px 44px; grid-template-columns: 1fr auto; gap: 12px; }.wordmark-mark { width: 32px; height: 32px; }.audio-switch { min-width: 82px; justify-content: flex-end; }.primary-nav { position: absolute; left: 0; right: 0; bottom: 0; height: 44px; display: flex; border-top: 1px solid rgba(216,217,206,.16); background: rgba(5,7,7,.82); }.primary-nav a { flex: 1; min-width: 0; min-height: 44px; padding: 0 4px; font-size: 8px; }.primary-nav a::after { bottom: 5px; }
  .hero { min-height: 800px; }.hero::before,.hero::after { height: 23px; }.hero-poster { inset: 0; background-position: 58% center; }.hero-scrim { background: linear-gradient(0deg, rgba(3,5,5,.96) 4%, rgba(3,5,5,.2) 70%), radial-gradient(circle at 55% 45%, transparent, rgba(0,0,0,.45)); }.hero-copy { margin-bottom: 66px; }.museum-id { max-width: 240px; line-height: 1.5; }.hero h1 { font-size: 30vw; }.hero h1 strong { -webkit-text-stroke-width: 1px; }.hero-deck { max-width: 340px; font-size: 15px; margin-top: 25px; }.descent-call { min-height: 52px; }
  .descent-section { height: 500vh; }.shaft-ledger { inset-inline: 12px; }.shaft-ledger li { grid-template-columns: 44px 1fr auto; min-height: 38vh; }.shaft-ledger b { font-size: 18px; }.shaft-ledger span,.shaft-ledger i { font-size: 7px; }.elevator-cab { width: calc(100% - 40px); height: 78svh; grid-template-rows: 68px 1fr 48px; }.cab-header,.cab-footer { padding: 0 15px; }.cab-header > p { max-width: 150px; line-height: 1.45; }.cab-footer span:first-child { display: none; }.cab-footer { justify-content: flex-end; }.floor-display { width: 82px; height: 50px; }.floor-display strong { font-size: 31px; }.cab-window { margin: 14px; }.level-copy { width: 82%; }.level-copy h2 { font-size: 42px; }.level-copy p { font-size: 11px; }.level-rail { display: none; }
  .cutaway-section,.ceremony-section,.log-section { padding: 100px 18px; }.cutaway-copy h2 { font-size: 54px; }.silo-diagram { min-height: 620px; }.silo-shell { width: 84%; padding-inline: 15px; }.silo-shell li { grid-template-columns: 38px 1fr; font-size: 8px; }.silo-shell li span { padding-left: 14px; }.depth-scale { right: -2px; }
  .ceremony-heading { margin-bottom: 42px; }.ceremony-heading h2 { font-size: 57px; }.control-room { min-height: 800px; padding: 45px 14px; }.glass-case { inset: 12px; }.console-instruction { margin-top: 48px; }.console-instruction strong { font-size: 28px; }.console-instruction small { max-width: 300px; justify-self: center; }.keys-panel { grid-template-columns: 1fr 1fr; gap: 10px; }.separation-rule { display: none; }.key-station { min-height: 270px; padding: 14px 8px; box-shadow: inset 0 1px #8a918d, 5px 7px 0 #050706; }.keyway { width: 88px; height: 88px; border-width: 7px; }.keyway i { width: 13px; height: 68px; }.station-label,.turn-label { font-size: 7px; }.truth-plaque { padding: 25px 20px; border-width: 5px; }.truth-plaque blockquote { font-size: 30px; }
  .log-title-block h2 { max-width: 340px; font-size: 46px; }.logbook { padding: 8px 14px 65px; transform: none; }.log-header,.logbook article { grid-template-columns: 52px 1fr 36px; gap: 10px; }.log-header { font-size: 8px; min-height: 44px; }.logbook article { min-height: 120px; }.logbook article p { font-size: 12px; }.logbook article b { font-size: 9px; padding: 5px; }.log-stamp { font-size: 10px; }
  .dismantling-section { padding: 100px 0 120px; }.dismantling-intro { padding: 0 18px; }.dismantling-intro h2 { font-size: 60px; }.evidence-strip { width: auto; margin: 65px 18px 0; display: flex; flex-direction: column; gap: 28px; }.evidence-photo,.photo-one,.photo-two,.photo-three { width: 100%; transform: none; margin: 0; }.evidence-photo figcaption { font-size: 8px; grid-template-columns: 67px 1fr; }
  .memorial-section { min-height: 760px; padding: 110px 18px 90px; }.memorial-section h2 { font-size: 48px; }.memorial-section > p { font-size: 15px; }.memorial-section dl div { grid-template-columns: 90px 1fr; gap: 10px; }.memorial-section dd { font-size: 13px; line-height: 1.4; }
  .site-footer { align-items: flex-start; flex-direction: column; gap: 10px; padding-block: 28px; }.site-footer nav { justify-content: flex-start; gap: 4px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .hero-poster { transform: none; }
}

/* Pass 2 — external critique: turn the page into a machine, not a stack of panels. */
.hero-frame::after { content:''; position:absolute; inset:0; pointer-events:none; background:repeating-linear-gradient(0deg,transparent 0 3px,rgba(216,217,206,.018) 4px),linear-gradient(105deg,transparent 0 58%,rgba(120,196,182,.08) 58.2%,transparent 59%); mix-blend-mode:screen; }
.hero h1 { text-shadow:0 16px 45px rgba(0,0,0,.65); }
.hero-register { position:absolute; z-index:11; right:clamp(62px,8vw,128px); bottom:clamp(95px,14vh,160px); display:grid; min-width:150px; gap:7px; padding:15px 0 15px 18px; border-left:1px solid rgba(120,196,182,.55); color:#939c97; font:500 8px var(--mono); letter-spacing:.15em; }
.hero-register b { color:var(--paper); font-size:23px; font-weight:300; letter-spacing:-.03em; }
body:not(.loaded) .hero-register { opacity:0; transform:translateX(18px); }
.loaded .hero-register { animation:reveal-side .8s .9s both; }
@keyframes reveal-side { from{opacity:0;transform:translateX(18px);filter:blur(5px)} to{opacity:1;transform:none;filter:none} }

.shaft-legend { position:sticky; z-index:8; top:92px; height:0; margin:0 clamp(14px,3vw,48px); display:grid; grid-template-columns:clamp(54px,8vw,120px) 1fr auto; color:#71817c; font:500 8px var(--mono); letter-spacing:.16em; pointer-events:none; }
.shaft-legend span:nth-child(2){text-align:center}.shaft-legend span:last-child{text-align:right}
.descent-sticky::before { content:''; position:absolute; inset:-20%; background:conic-gradient(from 92deg at 50% 50%,transparent 0 24%,rgba(120,196,182,.035) 25%,transparent 27% 74%,rgba(216,217,206,.028) 75%,transparent 77%); transform:rotate(calc(var(--depth-progress,0) * 18deg)); pointer-events:none; }
.descent-sticky::after { content:''; position:absolute; inset:0; background:linear-gradient(90deg,rgba(0,0,0,.82),transparent 18% 82%,rgba(0,0,0,.82)); pointer-events:none; }
.cab-window { background:linear-gradient(110deg,rgba(120,196,182,.12),transparent 31%),linear-gradient(90deg,transparent 49.8%,rgba(196,203,198,.14) 50%,transparent 50.2%),#040706; transition:background-color .7s ease; }
.cab-window::before { content:''; position:absolute; inset:0; z-index:1; background:linear-gradient(90deg,transparent 49.7%,rgba(120,196,182,.22) 50%,transparent 50.3%),linear-gradient(180deg,transparent 49.7%,rgba(120,196,182,.1) 50%,transparent 50.3%); opacity:.45; }
.depth-ticks { position:absolute; z-index:3; right:14px; inset-block:18px; display:flex; flex-direction:column; justify-content:space-between; color:#5f6b67; font:400 8px var(--mono); }
.depth-ticks span::before { content:''; display:inline-block; width:12px; margin-right:5px; border-top:1px solid currentColor; vertical-align:middle; }
.level-copy::before { content:attr(data-sequence); }
.level-copy h2 { text-wrap:balance; }
.cab-counterweight { position:absolute; z-index:4; left:calc(50% + min(470px, 42vw)); top:13svh; bottom:11svh; width:70px; border-inline:1px solid #34403d; color:#69736f; font:400 7px var(--mono); letter-spacing:.12em; writing-mode:vertical-rl; display:flex; align-items:center; padding-top:12px; }
.cab-counterweight::before,.cab-counterweight::after { content:''; position:absolute; left:50%; width:1px; height:34%; background:repeating-linear-gradient(#58635f 0 4px,transparent 4px 9px); }
.cab-counterweight::before{top:0}.cab-counterweight::after{bottom:0}
.cab-counterweight i { position:absolute; left:17px; right:17px; top:calc(72% - (var(--depth-progress,0) * 46%)); height:74px; border:1px solid #4d5854; background:linear-gradient(135deg,#242b29,#0b0e0d); box-shadow:0 12px 22px #000; transition:top .16s linear; }

.cutaway-section { background-color:#d1d1c7; background-image:radial-gradient(circle at 12% 18%,rgba(74,82,77,.11) 0 1px,transparent 1.5px),linear-gradient(98deg,transparent 0 71%,rgba(66,73,69,.055) 71.2%,transparent 72%); background-size:9px 9px,100% 100%; }
.cutaway-copy h2,.log-title-block h2,.dismantling-intro h2 { text-wrap:balance; }
.silo-diagram::after { content:'SECTION 09 / NOT FOR OPERATION'; position:absolute; left:14px; bottom:0; color:#68706c; font:500 8px var(--mono); letter-spacing:.13em; }

.ceremony-section { position:relative; background:linear-gradient(90deg,#070a09 0 8%,#0b100f 8% 92%,#070a09 92%); }
.ceremony-section::before { content:'LC—02'; position:absolute; right:2vw; top:105px; color:transparent; -webkit-text-stroke:1px rgba(120,196,182,.12); font:800 clamp(120px,20vw,300px)/1 var(--sans); letter-spacing:-.08em; pointer-events:none; }
.ceremony-heading { position:relative; z-index:1; align-items:start; }
.ceremony-heading > p { margin-top:55px; padding-top:18px; border-top:1px solid #34403d; }
.control-room { min-height:790px; padding-top:78px; border-color:#6f7974; background:radial-gradient(ellipse at 50% 64%,rgba(185,67,62,.14),transparent 39%),linear-gradient(180deg,#1c2422 0 17%,#0b0f0e 17% 76%,#121816 76%); box-shadow:inset 0 0 150px #000,0 42px 90px rgba(0,0,0,.38); }
.control-room::after { content:''; position:absolute; inset:17% 0 24%; border-block:1px solid rgba(196,203,198,.11); background:linear-gradient(90deg,transparent 49.8%,rgba(196,203,198,.12) 50%,transparent 50.2%); pointer-events:none; }
.room-coordinate { position:absolute; z-index:3; inset:18px 26px auto; display:grid; grid-template-columns:1fr auto 1fr; color:#74807b; font:500 8px var(--mono); letter-spacing:.14em; }
.room-coordinate b{justify-self:center;font-weight:500}.room-coordinate span:last-child{justify-self:end}
.warning-lamp { display:inline-flex; padding:11px 15px; border:1px solid #424c48; background:rgba(5,7,7,.72); }
.console-instruction small { max-width:640px; justify-self:center; font-size:11px; line-height:1.65; }
.key-station { position:relative; overflow:hidden; border-width:2px; background:linear-gradient(155deg,#48504d 0,#252b29 31%,#0c100f 72%); box-shadow:inset 0 1px #a2aaa5,inset 0 -28px 45px #070909,14px 18px 0 #040605; }
.key-station::before { content:'INERT'; position:absolute; right:-19px; top:16px; width:75px; padding:5px 0; transform:rotate(45deg); background:#242b29; border-block:1px solid #59635f; color:#8e9792; font:600 7px var(--mono); letter-spacing:.13em; }
.station-label,.turn-label { font-size:10px; }
.keyway { position:relative; box-shadow:inset 8px 10px 13px #080a0a,0 4px 0 #080a0a,0 0 0 12px rgba(7,10,9,.7); }
.keyway::after { content:''; position:absolute; inset:-20px; border:1px dashed rgba(196,203,198,.25); border-radius:50%; }
.interlock-path { position:relative; z-index:4; max-width:980px; margin:28px auto 0; display:grid; grid-template-columns:auto 1fr auto 1fr auto; gap:12px; align-items:center; color:#78827d; font:500 8px var(--mono); letter-spacing:.13em; }
.interlock-path span { width:24px;height:24px;display:grid;place-items:center;border:1px solid #4c5753;border-radius:50%; }
.interlock-path i { height:1px;background:repeating-linear-gradient(90deg,#4b5853 0 6px,transparent 6px 11px); }
.interlock-path b { color:var(--phosphor);font-weight:500; }
.sync-meter { margin-top:15px; height:5px; border:1px solid #3c4642; background:#080b0a; }
.truth-plaque { text-align:left; border-color:#747a75; background:linear-gradient(100deg,rgba(44,62,57,.08),transparent 30%),#d7d7cb; }
.interruption-label { display:block; margin:-50px -50px 34px; padding:12px 18px; background:#101514; color:var(--paper); font:500 8px var(--mono); letter-spacing:.14em; }
.control-room.resolved { background:radial-gradient(ellipse at 50% 40%,#7d857f 0,#3b4541 42%,#161c1a 78%); box-shadow:inset 0 0 85px rgba(216,217,206,.22),0 42px 90px rgba(0,0,0,.38); }
.control-room.interrupting { animation:interlock-hit .58s cubic-bezier(.2,.85,.25,1); }
.control-room.interrupting .warning-lamp span { animation:lamp-cut .58s steps(2,end); }
@keyframes interlock-hit { 0%,100%{transform:none;filter:none} 18%{transform:translateX(-4px);filter:brightness(1.5)} 32%{transform:translateX(3px)} 52%{transform:translateX(-2px);filter:brightness(.55)} }
@keyframes lamp-cut { 0%,42%{background:var(--warning);box-shadow:0 0 28px rgba(185,67,62,.9)} 43%,100%{background:#4d5652;box-shadow:none} }
.control-room.resolved::before { background:linear-gradient(102deg,transparent 0 33%,rgba(240,241,231,.12) 34%,transparent 44%),repeating-linear-gradient(90deg,transparent 0 7.9%,rgba(255,255,255,.018) 8%); }

.log-section { background-color:#c9c9be; background-image:linear-gradient(90deg,rgba(54,63,58,.05) 1px,transparent 1px),linear-gradient(rgba(54,63,58,.04) 1px,transparent 1px); background-size:34px 34px; }
.logbook { box-shadow:18px 18px 0 rgba(50,56,53,.12),36px 40px 60px rgba(35,40,37,.18); }
.logbook article { transition:background .25s ease,padding .25s ease; }
.logbook article:hover { background:rgba(120,196,182,.12); padding-inline:10px; }
.log-margin-note { position:absolute; right:-5px; top:100%; margin:23px 0 0; color:#5d6561; text-align:right; font:500 8px/1.7 var(--mono); letter-spacing:.08em; }

.evidence-photo { position:relative; }
.evidence-photo::before { content:'DECLASSIFIED'; position:absolute; z-index:2; top:22px; right:22px; padding:6px 9px; border:2px solid rgba(117,65,61,.7); color:#75413d; background:rgba(208,208,197,.72); transform:rotate(-4deg); font:700 8px var(--mono); letter-spacing:.12em; }
.evidence-photo::after { content:''; position:absolute; inset:11px 11px 58px; box-shadow:inset 0 0 0 1px rgba(216,217,206,.35),inset 0 0 70px rgba(0,0,0,.3); pointer-events:none; }

.memorial-section { min-height:800px; padding:150px clamp(20px,7vw,105px); display:grid; grid-template-columns:140px minmax(380px,1.2fr) minmax(360px,.8fr); gap:clamp(38px,6vw,90px); align-items:center; text-align:left; background:radial-gradient(circle at 28% 48%,#1b2724 0,#0b0f0e 42%,#070909 75%); }
.memorial-mark { margin:0; align-self:start; }
.memorial-copy h2 { margin:0; max-width:10ch; font-size:clamp(56px,6.8vw,102px); line-height:.91; letter-spacing:-.06em; text-wrap:balance; }
.memorial-copy > p:last-child { max-width:560px; margin:35px 0 0; color:#adb3ad; font-size:18px; line-height:1.65; }
.memorial-register { align-self:end; padding-top:120px; }
.memorial-register dl { width:100%; margin:0; border-top:1px solid var(--line); }
.memorial-register dl div { display:grid; grid-template-columns:105px 1fr; gap:16px; padding:18px 0; border-bottom:1px solid var(--line); }
.memorial-register dt { color:var(--phosphor); font:500 9px var(--mono); text-transform:uppercase; letter-spacing:.12em; }
.memorial-register dd { margin:0;color:#c2c6c0;font-size:15px;line-height:1.45; }

@media (max-width:900px) {
  .hero-register{right:24px}
  .elevator-cab{width:calc(100% - 92px);transform:translateX(-18px)}
  .cab-counterweight{left:auto;right:12px;width:46px}
  .memorial-section{grid-template-columns:105px 1fr;gap:38px}.memorial-register{grid-column:2;padding-top:20px}
  .interruption-label{margin:-50px -50px 34px}
}

@media (max-width:600px) {
  .hero-register{display:none}
  .descent-section{height:390vh}
  .shaft-legend{top:122px;grid-template-columns:48px 1fr auto;font-size:7px}
  .shaft-ledger{inset:20vh 12px}.shaft-ledger li{min-height:36vh;grid-template-columns:46px 1fr auto}.shaft-ledger b{font-size:34px}.shaft-ledger span,.shaft-ledger i{font-size:7px}
  .elevator-cab{width:calc(100% - 34px);height:76svh;transform:none}.cab-counterweight{display:none}.depth-ticks{display:none}
  .ceremony-section{background:#090d0c}.ceremony-section::before{top:70px}
  .control-room{padding-top:64px;min-height:850px}.room-coordinate{inset-inline:18px}.room-coordinate b{display:none}
  .console-instruction small{font-size:10px;padding-inline:10px}
  .interlock-path{gap:6px}.interlock-path b{font-size:7px;text-align:center}.interlock-path i{min-width:10px}
  .interruption-label{margin:-25px -20px 26px;font-size:7px}
  .log-margin-note{position:static;text-align:left;margin:28px 0 -42px}
  .memorial-section{min-height:900px;padding:110px 18px 90px;display:grid;grid-template-columns:1fr;text-align:left;gap:40px}.memorial-mark{width:84px;height:84px;margin:0}.memorial-copy h2{font-size:50px}.memorial-copy>p:last-child{font-size:15px}.memorial-register{grid-column:auto;padding:0}.memorial-register dl div{grid-template-columns:88px 1fr}.visit-link{margin-top:36px}
}

/* Pass 3 — film-frame motion, optical type and the Level 09 threshold. */
html { scrollbar-color: var(--phosphor-dim) #050707; scrollbar-width: thin; }
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: #050707; }
::-webkit-scrollbar-thumb { border: 3px solid #050707; background: var(--phosphor-dim); }
::-webkit-scrollbar-thumb:hover { background: var(--phosphor); }

body { font-kerning: normal; font-optical-sizing: auto; }
time, .floor-display, .hero-register, .depth-scale, .material-facts, .logbook, .memorial-register { font-variant-numeric: tabular-nums slashed-zero; }
.hero-poster { inset: -5%; width: 110%; height: 110%; max-width: none; object-fit: cover; object-position: center; background: none; animation: none; transform: translate3d(var(--hero-x, 0px), calc(var(--hero-y, 0px) + var(--hero-scroll, 0px)), 0) scale(1.065); transform-origin: 50% 48%; will-change: transform; }
.hero-vapor { position: absolute; width: 54vw; height: 34vw; min-width: 520px; min-height: 320px; border-radius: 50%; opacity: .14; filter: blur(52px); mix-blend-mode: screen; pointer-events: none; }
.hero-vapor-a { left: -13%; bottom: -18%; background: radial-gradient(ellipse, rgba(120,196,182,.38), transparent 68%); animation: vapor-drift-a 16s ease-in-out infinite alternate; }
.hero-vapor-b { top: 12%; right: -18%; background: radial-gradient(ellipse, rgba(189,201,195,.23), transparent 70%); animation: vapor-drift-b 21s ease-in-out infinite alternate; }
.hero-flare { transform: translate3d(var(--hero-flare-x, 0px), var(--hero-flare-y, 0px), 0) rotate(-2deg); }
.hero-frame-id { position: absolute; z-index: 11; left: clamp(18px, 6vw, 92px); top: clamp(96px, 15vh, 146px); width: min(430px, 36vw); display: grid; grid-template-columns: auto 1fr auto; gap: 12px; align-items: center; color: rgba(216,217,206,.55); font: 500 7px var(--mono); letter-spacing: .16em; }
.hero-frame-id i { height: 1px; background: linear-gradient(90deg, rgba(120,196,182,.65), transparent); }
.loaded .hero::before, .loaded .hero::after { animation: letterbox-open 1.25s cubic-bezier(.76,0,.24,1) both; }
body:not(.loaded) .hero-copy { opacity: 1; transform: none; }
.loaded .hero-copy { animation: none; }
body:not(.loaded) .hero-copy > *, body:not(.loaded) .hero-frame-id { opacity: 0; transform: translateY(22px); }
.loaded .museum-id { animation: reveal .65s .62s both; }
.loaded .hero h1 { animation: title-strike .95s .72s both; }
.loaded .hero-deck { animation: reveal .75s 1.02s both; }
.loaded .descent-call { animation: reveal .75s 1.16s both; }
.loaded .hero-frame-id { animation: reveal .65s 1.28s both; }

.descent-call { transition: color .25s ease, background .25s ease, box-shadow .25s ease, transform .25s cubic-bezier(.2,.8,.2,1); }
.descent-call:hover { background: var(--phosphor); box-shadow: 12px 12px 0 rgba(120,196,182,.16); transform: translate(-2px,-2px); }
.audio-switch { transition: color .2s ease; }
.audio-switch:hover { color: var(--phosphor); }
.key-station:hover { border-color: #85908b; transform: translateY(-3px); }
.key-station:focus-visible { outline-offset: 7px; }
.truth-plaque button, .site-footer a, .visit-link, .guide-back { transition: color .2s ease, border-color .2s ease, background-color .2s ease; }
.truth-plaque button:hover, .truth-plaque button:focus-visible { color: #245b51; border-color: #245b51; }
.site-footer a:hover, .site-footer a:focus-visible, .visit-link:hover, .visit-link:focus-visible { color: var(--phosphor); }

.threshold-section { position: relative; min-height: min(840px, 92svh); overflow: hidden; isolation: isolate; display: grid; place-items: center; background: #070909; }
.threshold-section::before { content: ''; position: absolute; inset: 0; z-index: 0; background: radial-gradient(circle at 50% 45%, rgba(120,196,182,.16), transparent 32%), repeating-radial-gradient(circle at 50% 50%, transparent 0 48px, rgba(120,196,182,.04) 49px 50px); }
.threshold-reveal { position: relative; z-index: 1; width: min(940px, calc(100% - 48px)); text-align: center; color: var(--paper); }
.threshold-reveal p { margin: 0 0 28px; color: var(--phosphor); font: 500 10px var(--mono); letter-spacing: .18em; }
.threshold-reveal h2 { max-width: 13ch; margin: 0 auto 28px; font-size: clamp(48px, 7.2vw, 108px); line-height: .91; letter-spacing: -.061em; text-wrap: balance; }
.threshold-reveal > span { display: block; max-width: 61ch; margin: auto; color: #bdc2bc; font-size: 16px; line-height: 1.7; }
.bulkhead { position: absolute; z-index: 3; inset: 0; overflow: hidden; perspective: 1100px; }
.bulkhead::before, .bulkhead::after { content: ''; position: absolute; z-index: 5; left: 0; right: 0; height: 38px; background: repeating-linear-gradient(135deg,#090c0b 0 12px,#4f5854 12px 15px,#171c1a 15px 27px); box-shadow: 0 0 35px #000; }
.bulkhead::before { top: 0; }.bulkhead::after { bottom: 0; }
.bulkhead-leaf { position: absolute; inset-block: 0; width: calc(50% + 2px); display: grid; place-items: center; overflow: hidden; background: linear-gradient(90deg, rgba(255,255,255,.055), transparent 16% 84%, rgba(0,0,0,.5)), repeating-linear-gradient(0deg, #222826 0 98px, #111514 99px 103px); box-shadow: inset 0 0 90px #050706, 0 0 36px #000; transition: transform 1.45s cubic-bezier(.77,0,.18,1); will-change: transform; }
.bulkhead-leaf::before { content: ''; position: absolute; width: min(46vw, 510px); aspect-ratio: 1; border: clamp(18px, 3vw, 44px) double #515a56; border-radius: 50%; box-shadow: inset 0 0 0 18px #171c1a, inset 0 0 70px #000, 0 0 0 13px #090c0b; }
.bulkhead-leaf::after { content: ''; position: absolute; inset: 0; background: linear-gradient(112deg, transparent 38%, rgba(216,217,206,.08) 39%, transparent 40%); }
.bulkhead-leaf-left { left: 0; border-right: 2px solid #89928d; transform-origin: left center; }
.bulkhead-leaf-right { right: 0; border-left: 2px solid #89928d; transform-origin: right center; }
.bulkhead-leaf b { position: relative; z-index: 2; color: transparent; -webkit-text-stroke: 1px rgba(216,217,206,.38); font: 800 clamp(92px, 18vw, 260px)/1 var(--sans); letter-spacing: -.08em; }
.bulkhead-leaf span { position: absolute; z-index: 2; bottom: 72px; color: #89928d; font: 500 8px var(--mono); letter-spacing: .16em; }
.bulkhead-control { position: absolute; z-index: 7; left: 50%; top: 50%; width: min(430px, calc(100% - 44px)); padding: 32px; display: grid; justify-items: center; gap: 15px; transform: translate(-50%,-50%); border: 1px solid #64706b; background: rgba(7,10,9,.94); box-shadow: 0 20px 75px #000, inset 0 0 28px rgba(120,196,182,.06); transition: opacity .4s .25s ease, transform .6s ease; }
.bulkhead-status { color: var(--phosphor); font: 500 9px var(--mono); letter-spacing: .14em; text-align: center; }
.bulkhead-control button { min-height: 58px; width: 100%; padding: 0; display: grid; grid-template-columns: 58px 1fr; align-items: center; border: 1px solid var(--steel); background: var(--paper); color: var(--void); cursor: pointer; text-transform: uppercase; font: 700 10px var(--mono); letter-spacing: .11em; transition: background .2s ease, transform .2s ease, box-shadow .2s ease; }
.bulkhead-control button span { height: 100%; display: grid; place-items: center; border-right: 1px solid #7d837f; font-size: 20px; }
.bulkhead-control button b { font-weight: 700; }
.bulkhead-control button:hover { background: var(--phosphor); transform: translateY(-2px); box-shadow: 8px 9px 0 rgba(120,196,182,.16); }
.bulkhead-control small { color: #858f8a; font: 400 8px var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.bulkhead.open .bulkhead-leaf-left { transform: translateX(-97%) rotateY(5deg); }
.bulkhead.open .bulkhead-leaf-right { transform: translateX(97%) rotateY(-5deg); }
.bulkhead.open .bulkhead-control { opacity: 0; transform: translate(-50%,-46%) scale(.96); pointer-events: none; }
.threshold-reveal.revealed { animation: threshold-light 1.5s .4s both; }

@keyframes letterbox-open { from { height: 50.5%; } to { height: clamp(26px, 6vh, 78px); } }
@keyframes title-strike { from { opacity: 0; transform: scaleX(1.07) translateY(28px); filter: blur(7px); } to { opacity: 1; transform: none; filter: none; } }
@keyframes vapor-drift-a { from { transform: translate3d(-8%,4%,0) scale(.9); } to { transform: translate3d(18%,-9%,0) scale(1.15); } }
@keyframes vapor-drift-b { from { transform: translate3d(6%,-4%,0) scale(1.08); } to { transform: translate3d(-14%,9%,0) scale(.92); } }
@keyframes threshold-light { from { opacity: .18; filter: blur(8px); transform: scale(.96); } to { opacity: 1; filter: none; transform: none; } }

@media (max-width:900px) {
  .hero-frame-id { width: 42vw; }
  .threshold-section { min-height: 760px; }
  .bulkhead-leaf::before { width: 62vw; }
}

@media (max-width:600px) {
  .hero-poster { object-position: 58% center; }
  .hero-vapor { min-width: 380px; min-height: 260px; }
  .hero-frame-id { top: 132px; width: calc(100% - 36px); }
  .hero-frame-id span:last-child { display: none; }
  .threshold-section { min-height: 700px; }
  .threshold-reveal { width: calc(100% - 36px); text-align: left; }
  .threshold-reveal h2 { margin-inline: 0; font-size: 50px; }
  .threshold-reveal > span { font-size: 14px; }
  .bulkhead-leaf::before { width: 115vw; border-width: 20px; }
  .bulkhead-leaf b { font-size: 26vw; }
  .bulkhead-leaf span { bottom: 62px; font-size: 6px; white-space: nowrap; }
  .bulkhead-control { padding: 24px 18px; }
  .bulkhead-control button { grid-template-columns: 52px 1fr; font-size: 9px; }
}

@media (prefers-reduced-motion: reduce) {
  .hero-poster { transform: none !important; will-change: auto; }
  .hero-vapor { display: none; }
  .bulkhead-leaf { will-change: auto; }
}