/* Ultraviolet landing page — "hard-tech instrument" direction.
   All colour/type values come from brand tokens (synced to site/brand). */
@import url("brand/tokens.css");

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
::selection { background: var(--brand); color: var(--on-brand); }
:focus-visible { outline: 1px solid var(--brand-text); outline-offset: 3px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.wrap { width: 100%; max-width: 1320px; margin: 0 auto; padding-left: max(var(--space-7), env(safe-area-inset-left, 0px)); padding-right: max(var(--space-7), env(safe-area-inset-right, 0px)); }

/* ---- Type ---------------------------------------------------------------- */
.display {
  font-family: var(--font-display);
  font-stretch: var(--stretch-display);
  font-variation-settings: "wdth" 125;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: -0.015em;
  line-height: .92;
  margin: 0;
}
.h2 { font-size: clamp(1.9rem, 4.1vw, 3.75rem); margin-bottom: var(--space-6); }
.nw { white-space: nowrap; }
.body { color: var(--text-2); max-width: 54ch; margin: 0 0 var(--space-5); }
em { font-style: normal; color: var(--brand-text); }
.mono, .eyebrow, .pill, .btn, .nav__hud, .instrument__bar, .instrument__foot, .side-note,
.readouts dt, .readouts span, .scope__legend, .row__meta, .row__idx, .layers span, .arch__fig figcaption,
.checks, .term, .ds__part, .ds__rev, .ds h4, .ds__notes, .st, .strip, .stage__nm, .join__msg,
.footer__legal, .marquee { font-family: var(--font-mono); }

.eyebrow {
  display: flex; align-items: center; gap: 12px;
  font-size: var(--fs-label); letter-spacing: var(--tracking-label); color: var(--text-3);
  margin: 0 0 var(--space-5);
}
.eyebrow .idx {
  display: inline-grid; place-items: center; min-width: 30px; height: 22px; padding: 0 6px;
  border: 1px solid var(--border-strong); color: var(--brand-text); letter-spacing: .06em;
}
.eyebrow--center { justify-content: center; }

/* ---- Global instrument chrome ------------------------------------------- */
.frame { position: fixed; z-index: 60; pointer-events: none;
  top: calc(10px + env(safe-area-inset-top, 0px)); bottom: calc(10px + env(safe-area-inset-bottom, 0px));
  left: calc(10px + env(safe-area-inset-left, 0px)); right: calc(10px + env(safe-area-inset-right, 0px)); }
.frame i { position: absolute; width: 14px; height: 14px; border: 0 solid var(--text-3); opacity: .7; }
.frame i:nth-child(1) { top: 0; left: 0; border-top-width: 1px; border-left-width: 1px; }
.frame i:nth-child(2) { top: 0; right: 0; border-top-width: 1px; border-right-width: 1px; }
.frame i:nth-child(3) { bottom: 0; left: 0; border-bottom-width: 1px; border-left-width: 1px; }
.frame i:nth-child(4) { bottom: 0; right: 0; border-bottom-width: 1px; border-right-width: 1px; }

.grain { /* faint page-wide grain so the dark never reads as flat digital black */
  position: fixed; inset: 0; z-index: 70; pointer-events: none; opacity: .035;
  background-image: var(--tex-grain);
}

/* Section grain: heavier film grain over the atmospheric sections (light, glow, motion).
   Data sections (principles, build, datasheet) stay clean on purpose. */
.grain-fx {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background-image: var(--tex-grain); background-size: 200px 200px;
  opacity: var(--grain-strength, .14); mix-blend-mode: screen;
}
.grain-fx--glow { /* grain that thickens where the light is, like exposure on film */
  mask-image: radial-gradient(70% 80% at var(--gx, 50%) var(--gy, 50%), #000 0%, rgba(0,0,0,.35) 70%, rgba(0,0,0,.15) 100%);
  -webkit-mask-image: radial-gradient(70% 80% at var(--gx, 50%) var(--gy, 50%), #000 0%, rgba(0,0,0,.35) 70%, rgba(0,0,0,.15) 100%);
}
.grainy { position: relative; isolation: isolate; }
.grainy > .wrap, .grainy > .marquee__track { position: relative; z-index: 1; }
.glow-pool { /* grainy-gradient light pool */
  position: absolute; z-index: -1; pointer-events: none; border-radius: 50%;
  width: var(--gs, 60vw); height: var(--gs, 60vw); left: var(--gx, 50%); top: var(--gy, 50%);
  transform: translate(-50%, -50%);
  background: radial-gradient(closest-side, rgba(122,60,255,.28), rgba(75,18,217,.12) 55%, transparent 75%);
}

/* ---- Buttons / pills ----------------------------------------------------- */
.btn {
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: .6em;
  font-size: .8125rem; letter-spacing: .1em; text-transform: uppercase;
  padding: 16px 24px; border-radius: var(--radius-1); border: 1px solid transparent;
  transition: background var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out), color var(--dur-base);
  cursor: pointer; white-space: nowrap; overflow: hidden;
}
.btn--sm { padding: 9px 14px; font-size: .72rem; }
.btn--primary { background: var(--brand); color: var(--on-brand); box-shadow: 0 0 0 1px rgba(182,156,255,.25) inset; }
.btn--primary::after { /* scan glint */
  content: ""; position: absolute; inset: 0; transform: translateX(-120%);
  background: linear-gradient(100deg, transparent 30%, rgba(255,255,255,.28) 50%, transparent 70%);
}
.btn--primary:hover { background: var(--uv-deep); box-shadow: inset 0 0 0 1px var(--brand-text), 0 0 40px -6px var(--brand); }
.btn--primary:hover::after { transform: translateX(120%); transition: transform 700ms var(--ease-out); }
.btn--ghost { border-color: var(--border-strong); color: var(--text); background: rgba(5,4,10,.4); }
.btn--ghost:hover { border-color: var(--brand-text); color: var(--brand-text); }
.btn span { position: relative; transition: transform var(--dur-base) var(--ease-out); }
.btn:hover span { transform: translateX(3px); }

.pill {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .6875rem; letter-spacing: .14em; color: var(--text-2);
  padding: 5px 10px; border: var(--hairline); white-space: nowrap; background: rgba(12,10,20,.6);
}
.pill--muted { color: var(--text-3); }
.px { width: 7px; height: 7px; background: var(--signal); display: inline-block; flex: none; box-shadow: 0 0 10px rgba(210,255,61,.6); }
.pill .px { animation: blink 2.4s steps(1) infinite; }
@keyframes blink { 0%, 86% { opacity: 1; } 87%, 100% { opacity: .2; } }

/* ---- Nav + HUD ----------------------------------------------------------- */
.nav {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50;
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  backdrop-filter: blur(14px) saturate(150%); -webkit-backdrop-filter: blur(14px) saturate(150%);
  border-bottom: var(--hairline);
}
.nav::after { /* scroll progress through the spectrum */
  content: ""; position: absolute; left: 0; bottom: -1px; height: 1px;
  width: calc(var(--energy, 0) * 100%); background: var(--grad-spectrum-solid);
  box-shadow: 0 0 10px var(--brand);
}
.nav__inner { max-width: 1320px; margin: 0 auto; padding-block: 12px; padding-left: max(var(--space-7), env(safe-area-inset-left, 0px)); padding-right: max(var(--space-7), env(safe-area-inset-right, 0px)); display: flex; align-items: center; gap: var(--space-6); }
.nav__logo img { height: 22px; width: auto; }
.nav__hud { display: flex; gap: var(--space-5); font-size: .6875rem; letter-spacing: .08em; color: var(--text-3); padding-left: var(--space-5); border-left: var(--hairline); }
.nav__hud b { color: var(--text); font-weight: 500; font-variant-numeric: tabular-nums; display: inline-block; min-width: 4.2ch; text-align: right; }
.nav__hud i { font-style: normal; }
.nav__links { display: flex; gap: var(--space-5); margin-left: auto; }
.nav__links a { font-size: .875rem; color: var(--text-2); transition: color var(--dur-fast); }
.nav__links a:hover { color: var(--text); }

/* ---- Spectral index rail ------------------------------------------------- */
.rail {
  position: fixed; right: calc(22px + env(safe-area-inset-right, 0px)); top: 50%; transform: translateY(-50%); z-index: 40;
  height: min(62vh, 520px); width: 64px;
}
.rail::before { content: ""; position: absolute; right: 6px; top: 0; bottom: 0; width: 1px; background: var(--border-strong); }
.rail__stops { list-style: none; margin: 0; padding: 0; position: absolute; inset: 0; }
.rail__stops li { position: absolute; right: 0; transform: translateY(-50%); }
.rail__stops button {
  display: flex; align-items: center; gap: 8px; background: none; border: 0; padding: 4px 0; cursor: pointer;
  font-family: var(--font-mono); font-size: .625rem; letter-spacing: .06em; color: var(--text-3);
  transition: color var(--dur-fast);
}
.rail__stops button::after { content: ""; width: 9px; height: 1px; background: var(--text-3); margin-right: 2px; transition: width var(--dur-base) var(--ease-out), background var(--dur-fast); }
.rail__stops button:hover, .rail__stops li.on button { color: var(--text); }
.rail__stops li.on button::after { width: 13px; background: var(--brand-text); margin-right: 0; }
.rail__stops button span { opacity: 0; transform: translateX(6px); transition: opacity var(--dur-base), transform var(--dur-base) var(--ease-out); }
.rail:hover .rail__stops button span, .rail__stops li.on button span { opacity: 1; transform: none; }
.rail__marker { position: absolute; right: 3px; top: 0; width: 7px; height: 7px; transform: translateY(calc(var(--rail, 0) * min(62vh, 520px) - 50%)); }
.rail__marker i { display: block; width: 7px; height: 7px; background: var(--signal); box-shadow: 0 0 12px var(--signal); }

/* ---- Hero ---------------------------------------------------------------- */
.hero { position: relative; padding: var(--space-8) 0 var(--space-9); overflow: hidden; isolation: isolate; }
.hero::before { /* instrument grid */
  content: ""; position: absolute; inset: 0; z-index: -1; opacity: .5;
  background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: var(--grid-cell) var(--grid-cell);
  mask-image: radial-gradient(120% 90% at 30% 30%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(120% 90% at 30% 30%, #000 30%, transparent 80%);
}
.hero::after { /* deep glow behind the instrument */
  content: ""; position: absolute; z-index: -1; right: -10%; bottom: -20%; width: 70vw; height: 70vw;
  background: radial-gradient(closest-side, rgba(122,60,255,.22), transparent 70%);
}
.hero__meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 22px; font-family: var(--font-mono); font-size: .6875rem; letter-spacing: .14em; color: var(--text-3); margin-bottom: var(--space-7); }

.hero__title { font-size: var(--fs-display); line-height: .9; letter-spacing: -0.025em; margin-bottom: var(--space-7); }
.hero__title .line { display: block; overflow: hidden; padding-bottom: .12em; margin-bottom: -.08em; } /* room for the Q tail */
.hero__title .line > span { display: inline-block; }
.line--outline > span { color: transparent; -webkit-text-stroke: 1.5px var(--text); }
.line--grad > span {
  background: linear-gradient(90deg, var(--uv-blacklight) 0%, var(--uv-ultra) 55%, var(--uv-deep) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
/* Plays once on load, no observer needed */
.hero__title .line > span { animation: rise 1100ms var(--ease-out) both; }
.hero__title .line:nth-child(2) > span { animation-delay: 90ms; }
.hero__title .line:nth-child(3) > span { animation-delay: 180ms; }
@keyframes rise { from { transform: translateY(105%); } to { transform: none; } }

.hero__grid { display: grid; grid-template-columns: 4.5fr 7.5fr; gap: var(--space-7); align-items: start; }
.hero__sub { font-size: clamp(1.0625rem, 1.4vw, 1.25rem); color: var(--text-2); margin: 0 0 var(--space-6); max-width: 40ch; }
.hero__ctas { display: flex; gap: var(--space-3); flex-wrap: wrap; margin-bottom: var(--space-7); }

.readouts { display: grid; grid-template-columns: 1fr 1fr; margin: 0; border: var(--hairline); }
.readouts > div { padding: 14px 16px; border-top: var(--hairline); border-left: var(--hairline); }
.readouts > div:nth-child(-n+2) { border-top: 0; }
.readouts > div:nth-child(odd) { border-left: 0; }
.readouts dt { font-size: .625rem; letter-spacing: .14em; text-transform: uppercase; color: var(--text-3); margin-bottom: 6px; }
.readouts dd { margin: 0; display: flex; align-items: baseline; gap: 4px; }
.readouts dd b { font-family: var(--font-display); font-stretch: 125%; font-variation-settings: "wdth" 125; font-weight: 600; font-size: 1.6rem; letter-spacing: -0.02em; line-height: 1; }
.readouts dd small { font-family: var(--font-mono); color: var(--text-3); font-size: .75rem; }
.readouts > div:first-child dd b { color: var(--signal); text-shadow: 0 0 18px rgba(210,255,61,.35); }
.readouts span { font-size: .625rem; letter-spacing: .1em; color: var(--text-3); text-transform: uppercase; }

/* Instrument panels (prism, scope) */
.instrument, .scope { margin: 0; border: 1px solid var(--border-strong); background: rgba(12,10,20,.72); position: relative; }
.instrument::before, .scope::before { /* corner brackets */
  content: ""; position: absolute; inset: -5px; pointer-events: none;
  background:
    linear-gradient(var(--brand-text), var(--brand-text)) top left / 12px 1px,
    linear-gradient(var(--brand-text), var(--brand-text)) top left / 1px 12px,
    linear-gradient(var(--brand-text), var(--brand-text)) bottom right / 12px 1px,
    linear-gradient(var(--brand-text), var(--brand-text)) bottom right / 1px 12px;
  background-repeat: no-repeat;
}
.instrument__bar, .instrument__foot {
  display: flex; justify-content: space-between; align-items: center; gap: var(--space-4); flex-wrap: wrap;
  padding: 10px 14px; font-size: .6875rem; letter-spacing: .1em; color: var(--text-3); text-transform: uppercase;
}
.instrument__bar { border-bottom: var(--hairline); }
.instrument__foot { border-top: var(--hairline); }
.instrument__bar i { font-style: normal; color: var(--border-strong); margin: 0 4px; }
.instrument__read { text-transform: none; }
.instrument__read b { color: var(--text); font-weight: 500; font-variant-numeric: tabular-nums; }
.instrument__read .band-tag { color: var(--on-signal); background: var(--signal); padding: 1px 6px; margin-left: 2px; }
.instrument__foot .hint { color: var(--brand-text); }
#prism { width: 100%; height: clamp(300px, 33vw, 470px); cursor: crosshair; touch-action: pan-y; }

/* ---- Marquee ------------------------------------------------------------- */
.marquee { border-top: var(--hairline); border-bottom: var(--hairline); overflow: hidden; padding: 18px 0; background: var(--surface); }
.marquee__track { display: flex; align-items: center; gap: 36px; width: max-content; animation: marquee 48s linear infinite; }
.marquee span {
  font-family: var(--font-display); font-stretch: 125%; font-variation-settings: "wdth" 125; font-weight: 600;
  text-transform: uppercase; font-size: clamp(1.1rem, 2vw, 1.6rem); letter-spacing: -0.01em; color: var(--text-3); white-space: nowrap;
}
.marquee span.hi { color: var(--text); }
.marquee i { width: 9px; height: 9px; background: var(--brand); flex: none; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---- Sections ------------------------------------------------------------ */
.section { position: relative; padding: var(--space-10) 0; border-top: var(--hairline); }
.sechead { display: grid; grid-template-columns: 3fr 9fr; gap: var(--space-7); align-items: start; margin-bottom: var(--space-8); }
.sechead__side { position: sticky; top: 96px; }
.side-note { font-size: .6875rem; letter-spacing: .14em; color: var(--text-3); margin: var(--space-6) 0 0; line-height: 1.8; }
.side-note span { color: var(--border-strong); letter-spacing: .06em; }

/* Scan-wipe heading reveal */
.wipe-box { position: relative; }
/* Text stays readable at rest; the scan bar sweeps over it and brightens it. */
.js .wipe { opacity: .6; transition: opacity 900ms var(--ease-inout); }
.wipe-box.in .wipe { opacity: 1; }
.wipe-box::after {
  content: ""; position: absolute; top: -4%; bottom: 8%; left: 0; width: 2px; opacity: 0; pointer-events: none;
  background: var(--uv-blacklight); box-shadow: 0 0 16px 2px var(--brand);
}
.js .wipe-box.in::after { animation: scanbar 1000ms var(--ease-inout) forwards; }
@keyframes scanbar { 0% { left: 0; opacity: 1; } 92% { opacity: 1; } 100% { left: 100%; opacity: 0; } }

/* Thesis statement — words light up with scroll */
.statement { font-size: clamp(1.6rem, 3.3vw, 3.1rem); line-height: 1.14; letter-spacing: -0.03em; font-weight: 500; margin: 0; max-width: 30ch; }
.js .statement .w { color: var(--text-3); transition: color 260ms var(--ease-out); }
.js .statement .w.on { color: var(--text); }
.js .statement em .w.on { color: var(--brand-text); text-shadow: 0 0 24px rgba(122,60,255,.5); }

/* Scope */
#scope { width: 100%; height: clamp(240px, 26vw, 380px); }
.scope__legend { display: flex; flex-wrap: wrap; gap: 8px 28px; padding: 12px 14px; border-top: var(--hairline); font-size: .6875rem; letter-spacing: .08em; color: var(--text-3); text-transform: uppercase; }
.scope__legend i { display: inline-block; width: 18px; height: 2px; vertical-align: middle; margin-right: 8px; }
.scope__legend .ch1 i { background: var(--text-2); }
.scope__legend .ch2 i { background: var(--uv-blacklight); box-shadow: 0 0 8px var(--brand); }
.scope__legend b { color: var(--text); font-weight: 500; font-variant-numeric: tabular-nums; display: inline-block; min-width: 2ch; text-align: right; }

/* Principles — editorial rows */
.rows { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--border-strong); }
.row {
  position: relative; display: grid; grid-template-columns: 80px 5fr 5fr 2fr; gap: var(--space-6); align-items: baseline;
  padding: var(--space-6) 0; border-bottom: var(--hairline); isolation: isolate;
}
.row::before { /* spectral sweep on hover */
  content: ""; position: absolute; inset: 0; z-index: -1; opacity: 0; transform: scaleX(.2); transform-origin: left;
  background: linear-gradient(90deg, rgba(153,69,255,.16), rgba(122,60,255,.06) 50%, transparent);
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
}
.row:hover::before { opacity: 1; transform: none; }
.row__idx { font-size: .75rem; color: var(--brand-text); letter-spacing: .1em; }
.row__title { font-size: clamp(1.75rem, 3.6vw, 3.25rem); transition: color var(--dur-base), transform var(--dur-slow) var(--ease-out); }
.row:hover .row__title { color: var(--brand-text); transform: translateX(8px); }
.row p { color: var(--text-2); margin: 0; font-size: 1rem; }
.row__meta { justify-self: end; font-size: .6875rem; letter-spacing: .1em; color: var(--text-3); text-transform: uppercase; white-space: nowrap; }

/* Architecture */
.arch { display: grid; grid-template-columns: 5fr 7fr; gap: var(--space-8); align-items: center; }
.layers { list-style: none; padding: 0; margin: var(--space-6) 0 0; border-top: var(--hairline); }
.layers li { display: grid; grid-template-columns: 44px 1fr; gap: 2px 12px; padding: 14px 10px; border-bottom: var(--hairline); cursor: default; transition: background var(--dur-fast); }
.layers li span { grid-row: span 2; font-size: .75rem; color: var(--text-3); letter-spacing: .08em; padding-top: 3px; }
.layers li b { font-weight: 560; }
.layers li em { color: var(--text-3); font-size: .875rem; }
.layers li.hl { background: var(--surface); }
.layers li.hl span, .layers li.hl b { color: var(--brand-text); }
.arch__fig { margin: 0; }
.arch__fig svg { width: 100%; height: auto; overflow: visible; }
.arch__fig figcaption { font-size: .6875rem; letter-spacing: .1em; color: var(--text-3); margin-top: var(--space-4); text-align: right; }
.arch__fig figcaption i { font-style: normal; color: var(--border-strong); }
.iso-layer { transition: transform 1400ms var(--ease-out), opacity 600ms; }
.js .arch__fig:not(.in) .iso-layer[data-k="apps"] { transform: translateY(150px); }
.js .arch__fig:not(.in) .iso-layer[data-k="uv"] { transform: translateY(100px); }
.js .arch__fig:not(.in) .iso-layer[data-k="proof"] { transform: translateY(50px); }
.iso-beams { transition: opacity 800ms 900ms; }
.js .arch__fig:not(.in) .iso-beams { opacity: 0; }
.iso-top { transition: fill var(--dur-base), stroke var(--dur-base); }
.iso-layer.hl .iso-top { stroke: var(--uv-blacklight); fill: rgba(122,60,255,.22); }
.iso-layer.hl .iso-label tspan:last-child { fill: var(--uv-blacklight); }
.iso-cell { transition: opacity 120ms linear; }

/* Build / terminal */
.split { display: grid; grid-template-columns: 5fr 7fr; gap: var(--space-8); align-items: center; }
.checks { list-style: none; padding: 0; margin: var(--space-5) 0 0; display: grid; gap: var(--space-3); font-size: .8125rem; color: var(--text-2); }
.checks li { display: flex; align-items: center; gap: var(--space-3); }
.term { border: 1px solid var(--border-strong); background: #07060D; box-shadow: 0 40px 80px -40px rgba(122,60,255,.45); min-width: 0; }
.term__bar { display: flex; align-items: center; gap: var(--space-4); padding: 10px 14px; border-bottom: var(--hairline); font-size: .6875rem; letter-spacing: .08em; color: var(--text-3); }
.term__dots { display: flex; gap: 6px; }
.term__dots i { width: 9px; height: 9px; border: 1px solid var(--border-strong); }
.term__copy { margin-left: auto; background: none; border: var(--hairline); padding: 4px 10px; cursor: pointer; font-family: var(--font-mono); font-size: .6875rem; letter-spacing: .1em; text-transform: uppercase; color: var(--text-3); }
.term__copy:hover { color: var(--text); border-color: var(--brand-text); }
.term__body { margin: 0; padding: var(--space-6) var(--space-5); min-height: 230px; overflow-x: auto; font-size: .875rem; line-height: 1.9; color: var(--text); white-space: pre; }
.term__body .p { color: var(--brand-text); user-select: none; }
.term__body .s { color: var(--uv-blacklight); }
.term__body .o { color: var(--text-3); }
.term__body .ok { color: var(--signal); }
.term__body .cur { display: inline-block; width: .6em; height: 1.1em; vertical-align: -0.18em; background: var(--uv-blacklight); animation: blink 1s steps(1) infinite; }

/* Datasheet */
.ds { border: 1px solid var(--border-strong); background: var(--surface); padding: var(--space-6); position: relative; }
.ds::after { content: "PRELIMINARY"; position: absolute; right: 24px; bottom: 18px; font-family: var(--font-mono); font-size: .625rem; letter-spacing: .3em; color: var(--border-strong); }
.ds__head { display: flex; justify-content: space-between; align-items: flex-end; gap: var(--space-5); padding-bottom: var(--space-5); border-bottom: 2px solid var(--text); margin-bottom: var(--space-6); }
.ds__brand { display: block; font-size: clamp(1.6rem, 3.2vw, 2.6rem); margin-bottom: 8px; }
.ds__part { font-size: .75rem; letter-spacing: .12em; color: var(--text-2); }
.ds__rev { text-align: right; font-size: .6875rem; letter-spacing: .12em; color: var(--text-3); line-height: 1.7; }
.ds h4 { font-size: .6875rem; letter-spacing: .16em; text-transform: uppercase; color: var(--brand-text); margin: 0 0 var(--space-3); font-weight: 500; }
.ds__cols { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-7); margin-bottom: var(--space-7); }
.ds__cols ul { margin: 0; padding-left: 1.1em; color: var(--text-2); font-size: .9375rem; }
.ds__cols li { margin-bottom: 4px; }
.ds__cols li::marker { color: var(--brand-text); content: "▪  "; }
.ds__cols p { margin: 0; color: var(--text-2); font-size: .9375rem; }
.ds__h { padding-top: var(--space-5); border-top: var(--hairline); }
.ds__tablewrap { overflow-x: auto; }
.ds__table { width: 100%; border-collapse: collapse; font-size: .875rem; }
.ds__table th { text-align: left; font-family: var(--font-mono); font-weight: 500; font-size: .625rem; letter-spacing: .14em; text-transform: uppercase; color: var(--text-3); padding: 10px 12px; border-bottom: 1px solid var(--border-strong); background: var(--bg); }
.ds__table td { padding: 12px; border-bottom: var(--hairline); font-family: var(--font-mono); font-size: .8125rem; color: var(--text); white-space: nowrap; }
.ds__table td:first-child { font-family: var(--font-sans); font-size: .9375rem; color: var(--text); }
.ds__table td.opt { color: var(--text-3); }
.ds__table tbody tr { transition: background var(--dur-fast); }
.ds__table tbody tr:hover { background: var(--surface-2); }
.st { font-size: .625rem; letter-spacing: .14em; text-transform: uppercase; display: inline-flex; align-items: center; gap: 8px; }
.st::before { content: ""; width: 7px; height: 7px; flex: none; }
.st sup { font-size: .55rem; color: var(--text-3); }
.st--ok { color: var(--signal); } .st--ok::before { background: var(--signal); }
.st--target { color: var(--brand-text); } .st--target::before { border: 1px solid var(--brand-text); }
.st--tba { color: var(--text-3); } .st--tba::before { border: 1px dashed var(--text-3); }
.ds__notes { font-size: .6875rem; letter-spacing: .04em; color: var(--text-3); margin: var(--space-5) 0 0; max-width: 90ch; line-height: 1.7; }

/* Roadmap spectrum strip */
.strip { position: relative; margin-bottom: var(--space-7); padding-top: 34px; padding-bottom: 30px; }
.strip__bands span {
  position: absolute; top: 0; height: 24px; border: 1px solid var(--border-strong); border-bottom: 0;
  font-size: .625rem; letter-spacing: .14em; color: var(--text-2); padding: 4px 8px; white-space: nowrap; overflow: hidden;
}
.strip__bar {
  position: relative; height: 64px; overflow: visible;
  background: linear-gradient(90deg, rgba(153,69,255,.55), rgba(122,60,255,.4) 30%, rgba(75,18,217,.25) 45%, rgba(21,18,31,.9) 100%);
  border: 1px solid var(--border-strong);
}
.strip__bar .ln { position: absolute; top: 0; bottom: 0; }
.strip__here { position: absolute; top: -8px; bottom: -8px; width: 2px; background: var(--signal); box-shadow: 0 0 16px var(--signal); z-index: 2; }
.strip__here i { position: absolute; left: -4px; top: -6px; width: 10px; height: 10px; background: var(--signal); }
.strip__here span { position: absolute; left: 12px; top: -7px; font-size: .625rem; letter-spacing: .14em; color: var(--signal); white-space: nowrap; }
.strip__scale span { position: absolute; bottom: 0; white-space: nowrap; transform: translateX(-50%); font-size: .625rem; letter-spacing: .08em; color: var(--text-3); }
.strip__scale span:first-child { transform: none; }
.strip__scale span:last-child { transform: translateX(-100%); }
.stages { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }
.stage { border: var(--hairline); padding: var(--space-6) var(--space-5); background: var(--surface); position: relative; overflow: hidden; }
.stage--now { border-color: var(--border-strong); background: linear-gradient(180deg, rgba(122,60,255,.14), var(--surface) 60%); }
.stage__top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
.stage__code { font-size: clamp(2rem, 3.6vw, 3.2rem); color: var(--text-3); }
.stage--now .stage__code { color: var(--text); }
.stage__nm { display: block; font-size: .6875rem; letter-spacing: .1em; color: var(--text-3); margin-bottom: var(--space-6); }
.stage h3 { font-size: var(--fs-h3); letter-spacing: -0.02em; margin: 0 0 var(--space-2); font-weight: 560; }
.stage p { color: var(--text-2); font-size: .9375rem; margin: 0; }

/* CTA */
.cta { position: relative; overflow: hidden; padding: calc(var(--space-10) * 1.2) 0; border-top: var(--hairline); text-align: center; isolation: isolate; }
.cta__sweep {
  position: absolute; left: 50%; top: 50%; width: 180vmax; height: 180vmax; z-index: -1;
  transform: translate(-50%, -50%);
  background: conic-gradient(from 0deg, transparent 0deg 330deg, rgba(122,60,255,.06) 340deg, rgba(122,60,255,.28) 357deg, rgba(182,156,255,.55) 360deg);
  animation: sweep 9s linear infinite;
  mask-image: radial-gradient(closest-side, #000 20%, transparent 62%);
  -webkit-mask-image: radial-gradient(closest-side, #000 20%, transparent 62%);
}
@keyframes sweep { to { transform: translate(-50%, -50%) rotate(360deg); } }
.cta__rings {
  position: absolute; inset: 0; z-index: -1; opacity: .5;
  background: repeating-radial-gradient(circle at 50% 50%, transparent 0 79px, var(--border) 79px 80px);
  mask-image: radial-gradient(closest-side, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(closest-side, #000 30%, transparent 75%);
}
.cta__inner { display: flex; flex-direction: column; align-items: center; }
.cta__title { font-size: clamp(2.4rem, 8vw, 7.5rem); margin-bottom: var(--space-6); }
.cta .body { margin-inline: auto; }
.join { display: flex; align-items: stretch; margin-top: var(--space-5); width: 100%; max-width: 580px; border: 1px solid var(--border-strong); background: rgba(5,4,10,.8); padding: 6px; }
.join:focus-within { border-color: var(--brand-text); box-shadow: 0 0 0 4px rgba(122,60,255,.15); }
.join__prompt { display: grid; place-items: center; padding: 0 4px 0 12px; font-family: var(--font-mono); color: var(--brand-text); }
.join input { flex: 1; min-width: 0; background: transparent; border: 0; color: var(--text); font-family: var(--font-mono); font-size: .9375rem; padding: 0 var(--space-3); }
.join input::placeholder { color: var(--text-3); }
.join input:focus { outline: none; }
.join__msg { min-height: 1.5em; margin: var(--space-4) 0 0; font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; color: var(--text-3); }
.join__msg.ok { color: var(--signal); }
.join__msg.err { color: var(--uv-red); }

/* Footer with giant wordmark */
.footer { border-top: var(--hairline); padding: var(--space-8) 0 var(--space-7); overflow: hidden; }
.footer__mark {
  width: 100%; aspect-ratio: 210 / 26;
  -webkit-mask: url("brand/assets/wordmark.svg") center / 100% 100% no-repeat;
          mask: url("brand/assets/wordmark.svg") center / 100% 100% no-repeat;
  background: linear-gradient(90deg, var(--uv-line-strong) 0%, var(--uv-line-strong) 35%, var(--uv-blacklight) 48%, var(--uv-ultra) 52%, var(--uv-line-strong) 65%, var(--uv-line-strong) 100%);
  background-size: 300% 100%;
  animation: shimmer 9s var(--ease-inout) infinite;
}
@keyframes shimmer { 0% { background-position: 100% 0; } 100% { background-position: 0% 0; } }
.footer__row { display: flex; justify-content: space-between; align-items: center; gap: var(--space-5); flex-wrap: wrap; margin-top: var(--space-7); }
.footer__row p { margin: 0; color: var(--text-2); }
.footer__links { display: flex; gap: var(--space-5); flex-wrap: wrap; }
.footer__links a { color: var(--text-2); font-size: .875rem; }
.footer__links a:hover { color: var(--text); }
.footer__legal { margin: var(--space-6) 0 0; padding-top: var(--space-5); border-top: var(--hairline); font-size: .6875rem; letter-spacing: .04em; color: var(--text-3); }

/* ---- Reveal -------------------------------------------------------------- */
.js .reveal { opacity: .55; transform: translateY(10px); transition: opacity 800ms var(--ease-out), transform 800ms var(--ease-out); }
.js .reveal.in { opacity: 1; transform: none; }

/* ---- Responsive ---------------------------------------------------------- */
@media (max-width: 1280px) { .rail { display: none; } }
@media (max-width: 1100px) {
  .nav__hud { display: none; }
  .hero__grid, .arch, .split { grid-template-columns: 1fr; }
  .hero__copy { max-width: 640px; }
  .sechead { grid-template-columns: 1fr; gap: var(--space-4); }
  .sechead__side { position: static; }
  .side-note { display: none; }
  .row { grid-template-columns: 56px 1fr; }
  .row p { grid-column: 2; }
  .row__meta { grid-column: 2; justify-self: start; }
}
@media (max-width: 760px) {
  .wrap, .nav__inner { padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
  .nav__links { display: none; }
  .nav .btn { margin-left: auto; }
  .frame { top: calc(6px + env(safe-area-inset-top, 0px)); bottom: calc(6px + env(safe-area-inset-bottom, 0px)); left: calc(6px + env(safe-area-inset-left, 0px)); right: calc(6px + env(safe-area-inset-right, 0px)); }
  .hide-sm { display: none; }
  .hero { padding-top: var(--space-6); }
  .hero__title { margin-bottom: var(--space-6); }
  .line--outline > span { -webkit-text-stroke-width: 1px; }
  .section { padding: var(--space-9) 0; }
  .sechead { margin-bottom: var(--space-6); }
  .row { grid-template-columns: 1fr; gap: var(--space-2); padding: var(--space-5) 0; }
  .row p, .row__meta { grid-column: 1; }
  .ds { padding: var(--space-4); }
  .ds__head { flex-direction: column; align-items: flex-start; }
  .ds__rev { text-align: left; }
  .ds__cols { grid-template-columns: 1fr; gap: var(--space-5); }
  .ds__table .opt { display: none; }
  .ds__table td, .ds__table th { padding: 10px 8px; }
  .ds__table td:first-child { white-space: normal; }
  .ds::after { display: none; }
  .stages { grid-template-columns: 1fr; }
  .strip__bands span { font-size: .5625rem; padding: 4px 4px; }
  .strip__scale span:nth-child(even) { display: none; }
  .join { flex-direction: column; padding: 8px; gap: 8px; }
  .join__prompt { display: none; }
  .join input { height: 48px; }
  .term__body { font-size: .75rem; padding: var(--space-5) var(--space-4); }
  .iso-callout { display: none; }
  .instrument__foot .hint, .instrument__foot span:nth-child(2) { display: none; }
  .arch__fig figcaption { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  .js .reveal, .js .wipe { opacity: 1; transform: none; transition: none; }
  .hero__title .line > span { animation: none; }
  .js .wipe-box.in::after { animation: none; }
  .marquee__track, .footer__mark, .pill .px { animation: none; }
  .cta__sweep { display: none; }
  .js .arch__fig:not(.in) .iso-layer, .js .arch__fig:not(.in) .iso-beams { transform: none; opacity: 1; }
}