/* Hallmark · genre: atmospheric · macrostructure: Marquee Hero + Feature Stack · hero: H1 marquee (logo monolith + light sweep) · nav: N9 · footer: Ft1
 * theme: custom · vibe: "monolith glow, cinematic void, bone serif" · paper: oklch(12% 0.016 262) · accent: oklch(82% 0.11 78)
 * display: Instrument Serif (roman) · body: Geist 400 · axes: dark / classical-serif / chromatic-amber ~78°
 * motion: one light sweep · pinned scroll scenes (≥62rem) · stack crossfade · studied: no · context: user + inferred
 */
/* Hallmark · pre-emit critique: P5 H5 E4 S4 R4 V5 · gates: see .hallmark/log.json */

/* Self-hosted faces (SIL OFL 1.1 — assets/fonts/OFL-*.txt). No third-party font requests. */
@font-face { font-family: "Instrument Serif"; src: url("assets/fonts/instrument-serif-latin-ext.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Instrument Serif"; src: url("assets/fonts/instrument-serif-latin.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Geist"; src: url("assets/fonts/geist-latin-ext.woff2") format("woff2"); font-weight: 100 900; font-style: normal; font-display: swap; unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Geist"; src: url("assets/fonts/geist-latin.woff2") format("woff2"); font-weight: 100 900; font-style: normal; font-display: swap; unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }

*, *::before, *::after { box-sizing: border-box; }
html { overflow-x: clip; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; overflow-x: clip; background: var(--color-paper); color: var(--color-ink); font: 400 var(--text-base)/1.6 var(--font-body); -webkit-font-smoothing: antialiased; }
img, picture, svg { display: block; max-width: 100%; }
h1, h2, h3, p, ul, ol, figure { margin: 0; }
h1, h2, h3 { overflow-wrap: anywhere; min-width: 0; }
a:active { color: var(--color-accent); }
ul[role="list"], ol[role="list"] { list-style: none; padding: 0; }
a { color: inherit; }
::selection { background: var(--color-accent); color: var(--color-accent-ink); }
:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 4px; border-radius: 3px; }
.skip-link { position: absolute; left: var(--gutter); top: -100px; z-index: var(--z-modal); padding: var(--space-xs) var(--space-md); border-radius: var(--radius-pill); background: var(--color-ink); color: var(--color-paper); text-decoration: none; }
.skip-link:focus-visible { top: var(--space-sm); }
.glyph { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 1.2; overflow: visible; }
.button { display: inline-flex; align-items: center; gap: 0.6em; min-height: 50px; padding: 0 1.5em; border: 1px solid var(--color-accent); border-radius: var(--radius-pill); color: var(--color-ink); font-weight: 500; text-decoration: none; white-space: nowrap; transition: background-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out); }
.button:hover { background: var(--color-accent); color: var(--color-accent-ink); }
.button:active { transform: translateY(1px); }
.button[aria-disabled="true"] { opacity: 0.45; pointer-events: none; }
.button--light { background: var(--color-ink); border-color: var(--color-ink); color: var(--color-paper); }
.button--light:hover { background: var(--color-accent); border-color: var(--color-accent); }
.text-link { color: var(--color-ink-2); text-underline-offset: 0.3em; text-decoration-color: var(--color-rule); white-space: nowrap; }
.text-link:hover { color: var(--color-accent); text-decoration-color: var(--color-accent); }

/* ---------- N9 · edge-aligned minimal ---------- */
.edge {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: var(--z-sticky);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-md) var(--gutter);
  background: linear-gradient(var(--color-veil), transparent);
}
.wordmark { display: inline-flex; align-items: center; gap: 0.7rem; color: var(--color-ink); text-decoration: none; font: 500 0.78rem/1 var(--font-body); letter-spacing: 0.36em; white-space: nowrap; }
.wordmark img { width: 18px; height: auto; }
.edge__cta { display: inline-flex; align-items: center; min-height: 44px; padding: 0 var(--space-md); border: 1px solid var(--color-rule); border-radius: var(--radius-pill); color: var(--color-ink); font-size: var(--text-sm); text-decoration: none; white-space: nowrap; backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); transition: border-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out); }
.edge__cta:hover { border-color: var(--color-accent); color: var(--color-accent); }

/* ---------- marquee hero · the monolith ---------- */
.marquee {
  position: relative;
  isolation: isolate;
  display: grid;
  justify-items: center;
  align-content: center;
  gap: var(--space-lg);
  min-height: 88svh; /* phones: let the next section peek so the page reads as continuing */
  /* bottom ≥ 1.3× top so the composition sits above the geometric centre (gate 44) */
  padding: calc(var(--space-2xl) + var(--space-md)) var(--gutter) calc(var(--space-2xl) * 1.75);
  text-align: center;
  overflow: clip;
}
.marquee::before {
  /* bloom 1 — the beam */
  content: "";
  position: absolute;
  z-index: -2;
  left: 50%;
  top: 0;
  width: min(46rem, 120%);
  height: 92%;
  translate: -50% 0;
  background: radial-gradient(closest-side, var(--color-glow), transparent 75%);
  pointer-events: none;
}
.hero-grid {
  /* the reflective horizon floor */
  position: absolute;
  z-index: -1;
  inset: auto 0 0 0;
  height: 34%;
  perspective: 420px;
  overflow: hidden;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to top, black, transparent 95%);
  mask-image: linear-gradient(to top, black, transparent 95%);
}
.hero-grid::before {
  content: "";
  position: absolute;
  inset: 0 -40% -60% -40%;
  background: repeating-linear-gradient(to bottom, var(--color-rule) 0 1px, transparent 1px 34px);
  transform-origin: 50% 0;
  transform: rotateX(76deg);
}
.hero-grid::after {
  content: "";
  position: absolute;
  left: 10%;
  right: 10%;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  box-shadow: 0 0 24px 4px var(--color-glow);
}
.marquee__mark { position: relative; width: min(64vw, 46svh, 30rem); }
.aperture-mark { width: 100%; height: auto; }
.marquee__sweep {
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 35%, var(--color-beam) 50%, transparent 65%) no-repeat;
  background-size: 300% 100%;
  background-position: 120% 0;
  -webkit-mask: url("assets/brand/zero_state_logo_1200.webp") center / contain no-repeat;
  mask: url("assets/brand/zero_state_logo_1200.webp") center / contain no-repeat;
  mix-blend-mode: screen;
  pointer-events: none;
  opacity: 0;
}
.marquee__title { max-width: 18ch; font: 400 var(--text-2xl)/1.02 var(--font-display); letter-spacing: -0.015em; overflow-wrap: anywhere; }
.marquee__title span { display: block; }
.marquee__title span + span { color: var(--color-ink-2); }
.marquee__kicker { color: var(--color-muted); font-size: var(--text-xs); letter-spacing: 0.24em; text-transform: uppercase; }
.marquee__mark, .marquee__title, .marquee__kicker { animation: emerge 1100ms var(--ease-out) both; }
.marquee__title { animation-delay: 220ms; }
.marquee__kicker { animation-delay: 380ms; }
.marquee__sweep { animation: sweep 2200ms var(--ease-in-out) 700ms both; }
@media (min-width: 48rem) { .marquee { min-height: 100svh; } }
@keyframes emerge { from { opacity: 0; transform: translateY(18px); } }
@keyframes sweep { 0% { opacity: 1; background-position: 120% 0; } 85% { opacity: 1; } 100% { opacity: 0; background-position: -20% 0; } }

/* ---------- intro ---------- */
.intro { display: grid; gap: var(--space-xl); padding: var(--space-2xl) var(--page-pad) var(--space-3xl); }
.intro__lede { max-width: 30ch; font: 400 var(--text-xl)/1.15 var(--font-display); }
.intro__doors { display: grid; border-top: 1px solid var(--color-rule); }
.door { display: grid; grid-template-columns: 44px minmax(0, 1fr); grid-template-areas: "g label" "g text"; column-gap: var(--space-md); padding: var(--space-lg) 0; border-bottom: 1px solid var(--color-rule); text-decoration: none; }
.door__glyph { grid-area: g; width: 44px; height: 44px; color: var(--color-accent); }
.door__label { grid-area: label; color: var(--color-muted); font-size: var(--text-xs); letter-spacing: 0.18em; text-transform: uppercase; }
.door__text { grid-area: text; font: 400 var(--text-lg)/1.15 var(--font-display); transition: color var(--dur-short) var(--ease-out); }
.door:hover .door__text { color: var(--color-accent); }
.intro__foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-xs) var(--space-lg); color: var(--color-muted); font-size: var(--text-sm); }
.intro__foot a { color: var(--color-ink-2); white-space: nowrap; text-decoration: none; }
.intro__foot a:hover { color: var(--color-accent); }
@media (min-width: 62rem) {
  .intro { grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); grid-template-areas: "lede doors" "foot foot"; column-gap: var(--space-2xl); align-items: end; }
  .intro__lede { grid-area: lede; }
  .intro__doors { grid-area: doors; }
  .intro__foot { grid-area: foot; }
}

/* ---------- method · pinned scene ---------- */
.scene { padding: var(--space-3xl) var(--page-pad); border-top: 1px solid var(--color-rule-2); }
.scene__stage { display: grid; gap: var(--space-lg); max-width: 52rem; }
.scene h2 { font: 400 var(--text-2xl)/1.02 var(--font-display); letter-spacing: -0.015em; }
.scene h2 span { display: block; }
.scene__b { color: var(--color-ink-2); }
.scene__lines { display: grid; gap: var(--space-2xs); color: var(--color-muted); font-size: var(--text-md); }
.scene__line.lit { color: var(--color-accent); }
.scene__doctrine { max-width: 32ch; font: 400 var(--text-lg)/1.25 var(--font-display); }
.scene__prose { display: grid; gap: var(--space-md); max-width: 58ch; color: var(--color-ink-2); }
@media (min-width: 62rem) and (prefers-reduced-motion: no-preference) {
  @supports (animation-timeline: view()) {
    .scene { height: 340svh; padding: 0 var(--page-pad); view-timeline-name: --scene; }
    .scene__stage { position: sticky; top: 0; height: 100svh; align-content: center; }
    .scene__stage > *, .scene h2 span, .scene__line { animation: scene-in linear both; animation-timeline: --scene; }
    .scene h2 { animation: none; }
    .scene__a { animation-range: contain 0% contain 12%; }
    .scene__b { animation-range: contain 12% contain 26%; }
    .scene__lines { animation: none; }
    .scene__line:nth-child(1) { animation-range: contain 28% contain 38%; }
    .scene__line:nth-child(2) { animation-range: contain 38% contain 48%; }
    .scene__line:nth-child(3) { animation-range: contain 48% contain 60%; }
    .scene__doctrine { animation-range: contain 62% contain 74%; }
    .scene__prose { animation-range: contain 76% contain 90%; }
  }
}
@keyframes scene-in { from { opacity: 0; transform: translateY(28px); filter: blur(6px); } }

/* ---------- evidence · F2 feature stack ---------- */
.stack { padding: var(--space-3xl) var(--page-pad); border-top: 1px solid var(--color-rule-2); }
.stack__head { display: grid; gap: var(--space-sm); max-width: 40rem; }
.stack__head h2 { font: 400 var(--text-2xl)/1.02 var(--font-display); }
.stack__head p { color: var(--color-ink-2); font-size: var(--text-md); }
.stack__body { margin-top: var(--space-2xl); }
.stack__pin { display: none; }
.stack__group { margin-top: var(--space-2xl); }
.stack__group:first-child { margin-top: 0; }
.stack__group h3 { font: 400 var(--text-lg)/1.1 var(--font-display); }
.stack__group > p { max-width: 50ch; margin-top: var(--space-2xs); color: var(--color-muted); font-size: var(--text-sm); }
.stack__list { margin-top: var(--space-md); border-top: 1px solid var(--color-rule); }
.entry a {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  grid-template-areas: "g name" "g type" "g status";
  column-gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-rule-2);
  text-decoration: none;
}
.entry__glyph { grid-area: g; width: 44px; height: 44px; color: var(--color-ink-2); }
.entry__name { grid-area: name; font: 400 var(--text-lg)/1.1 var(--font-display); transition: color var(--dur-short) var(--ease-out); }
.entry__type { grid-area: type; color: var(--color-ink-2); }
.entry__status { grid-area: status; color: var(--color-muted); font-size: var(--text-xs); letter-spacing: 0.02em; }
.entry__evidence { display: none; }
.entry a:hover .entry__name, .entry.is-active .entry__name { color: var(--color-accent); }
@media (min-width: 62rem) {
  .stack__body { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); column-gap: var(--space-2xl); align-items: start; }
  .stack__pin { position: sticky; top: 14svh; display: grid; justify-items: center; gap: var(--space-md); }
  .pin__stage { position: relative; width: min(100%, 22rem); aspect-ratio: 1; }
  .pin__stage::before { content: ""; position: absolute; inset: -18%; background: radial-gradient(closest-side, var(--color-glow-soft), transparent 70%); }
  .pin__glyph { position: absolute; inset: 0; color: var(--color-ink); opacity: 0; transform: scale(0.94); transition: opacity var(--dur-long) var(--ease-out), transform var(--dur-long) var(--ease-out); }
  .pin__glyph .glyph { stroke-width: 1; }
  .pin__glyph.is-active { opacity: 1; transform: none; }
  .pin__caption { font: 400 var(--text-xl)/1 var(--font-display); text-align: center; }
  .pin__evidence { width: min(100%, 18rem); aspect-ratio: 16 / 10; overflow: hidden; border-radius: 8px; box-shadow: 0 0 0 1px var(--color-rule); background: var(--color-paper-2); }
  .pin__evidence img { width: 100%; height: 100%; object-fit: cover; animation: fade var(--dur-long) var(--ease-out); }
  .entry a { grid-template-columns: minmax(0, 1fr); grid-template-areas: "name" "type" "status"; padding: var(--space-lg) 0; }
  .entry__glyph { display: none; }
  .entry__name { font-size: var(--text-xl); }
}
@keyframes fade { from { opacity: 0; } }

/* ---------- local intelligence · the frame closes ---------- */
.local { display: grid; gap: var(--space-2xl); padding: var(--space-3xl) var(--page-pad); border-top: 1px solid var(--color-rule-2); }
.local__art { width: min(100%, 26rem); }
.frame-art { width: 100%; height: auto; overflow: visible; }
.frame-art * { fill: none; }
.fc path { stroke: var(--color-ink); stroke-width: 2.5; stroke-linecap: square; }
.fc { transform-box: view-box; }
.fa__halo { stroke: var(--color-rule); stroke-width: 1; stroke-dasharray: 2 7; }
.fa__edge { stroke: var(--color-ink-2); stroke-width: 1.2; }
.frame-art .fa__node { fill: var(--color-paper); stroke: var(--color-ink); stroke-width: 1.5; }
.frame-art .fa__node--lit { fill: var(--color-accent); stroke: var(--color-accent); }
.frame-art text { fill: var(--color-muted); font: 500 11px/1 var(--font-body); letter-spacing: 0.2em; }
.local__copy { display: grid; gap: var(--space-lg); min-width: 0; }
.local h2 { font: 400 var(--text-2xl)/1 var(--font-display); }
.local__nvidia { display: flex; align-items: center; gap: var(--space-sm); color: var(--color-ink); font-size: var(--text-sm); }
.nvidia-logo { flex: none; width: 34px; height: 34px; color: var(--color-ink); }
.local__lede { max-width: 46ch; color: var(--color-ink-2); font-size: var(--text-md); line-height: 1.5; }
.local__why { display: grid; gap: var(--space-2xs); color: var(--color-ink-2); font-size: var(--text-sm); }
.local__why li::before { content: "— "; color: var(--color-accent); }
.local__uses { display: grid; gap: var(--space-lg); padding-block: var(--space-lg); border-block: 1px solid var(--color-rule); }
.local__uses h3, .local__steps h3 { font: 400 var(--text-lg)/1.1 var(--font-display); }
.local__uses p, .local__steps p { color: var(--color-ink-2); max-width: 46ch; }
.local__steps { display: grid; gap: var(--space-lg); }
/* ordinal steps: the number stacks above its heading at every width (gate 54) */
.local__steps li { display: grid; gap: var(--space-2xs); }
.step__n { color: var(--color-accent); font-size: var(--text-xs); letter-spacing: 0.1em; }
.local .button { justify-self: start; }
@media (min-width: 48rem) { .local__uses { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: var(--space-xl); } }
@media (min-width: 62rem) {
  .local { grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); column-gap: var(--space-2xl); align-items: start; view-timeline-name: --local; }
  .local__art { position: sticky; top: 18svh; width: 100%; }
}
@media (min-width: 62rem) and (prefers-reduced-motion: no-preference) {
  @supports (animation-timeline: view()) {
    .fc { animation: close-in linear both; animation-timeline: --local; animation-range: entry 20% contain 25%; }
    .fc--tl { --fx: -60px; --fy: -60px; } .fc--tr { --fx: 60px; --fy: -60px; } .fc--br { --fx: 60px; --fy: 60px; } .fc--bl { --fx: -60px; --fy: 60px; }
  }
}
@keyframes close-in { from { opacity: 0.15; transform: translate(var(--fx, 0), var(--fy, 0)); } }

/* ---------- programs ---------- */
.programs { padding: var(--space-2xl) var(--page-pad); border-top: 1px solid var(--color-rule-2); }
.programs h2 { color: var(--color-muted); font-size: var(--text-xs); font-weight: 400; letter-spacing: 0.22em; text-transform: uppercase; }
.programs__list { display: grid; gap: var(--space-lg); margin-top: var(--space-lg); }
.programs__list li { display: flex; align-items: center; gap: var(--space-md); }
.program__logo { flex: none; width: 30px; height: 30px; color: var(--color-ink-2); }
.program__brand { font: 400 var(--text-md)/1.2 var(--font-display); }
.program__name { color: var(--color-muted); font-size: var(--text-sm); }
@media (min-width: 48rem) { .programs__list { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 75rem) { .programs__list { grid-template-columns: repeat(4, minmax(0, 1fr)); } }

/* ---------- principles ---------- */
.principles { display: grid; gap: var(--space-xl); padding: var(--space-3xl) var(--page-pad); border-top: 1px solid var(--color-rule-2); }
.principles__mark { width: 6rem; }
.principles h2 { font: 400 var(--text-2xl)/1.02 var(--font-display); }
.principles h2 span { display: block; color: var(--color-ink-2); }
.principles__list { display: grid; gap: var(--space-lg); }
.principles__list strong { display: block; font: 400 var(--text-xl)/1 var(--font-display); font-weight: 400; color: var(--color-accent); }
.principles__list p { margin-top: var(--space-xs); color: var(--color-ink-2); }
@media (min-width: 62rem) {
  .principles { grid-template-columns: minmax(0, 2fr) minmax(0, 10fr); column-gap: var(--space-2xl); }
  .principles__mark { grid-row: 1 / span 2; width: 100%; max-width: 9rem; }
  .principles__list { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr) minmax(0, 0.9fr); column-gap: var(--space-xl); }
}

/* ---------- closing + Ft1 mast ---------- */
.closing { position: relative; isolation: isolate; display: grid; gap: var(--space-xl); justify-items: start; padding: var(--space-3xl) var(--page-pad); border-top: 1px solid var(--color-rule-2); }
.closing::before { content: ""; position: absolute; z-index: -1; inset: 30% 0 0 0; background: radial-gradient(50% 70% at 70% 100%, var(--color-glow-soft), transparent 70%); }
.closing h2 { font: 400 clamp(3rem, 7vw + 1rem, 7rem)/0.98 var(--font-display); letter-spacing: -0.02em; overflow-wrap: anywhere; }
.closing h2 span { display: block; color: var(--color-ink-2); }
.closing__actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-md) var(--space-xl); }
.closing__note { color: var(--color-muted); font-size: var(--text-sm); }
.mast { display: grid; gap: var(--space-lg); padding: var(--space-2xl) var(--page-pad) var(--space-xl); border-top: 1px solid var(--color-rule); }
.mast__band { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-md) var(--space-xl); }
.mast__band p { font: 400 var(--text-lg)/1.1 var(--font-display); color: var(--color-ink-2); }
.mast__links { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-xs) var(--space-lg); }
.mast__links a { color: var(--color-ink-2); font-size: var(--text-sm); text-decoration: none; white-space: nowrap; }
.mast__links a:hover { color: var(--color-accent); }
.mast__legal { color: var(--color-muted); font-size: var(--text-xs); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 150ms !important; animation-delay: 0ms !important; transition-duration: 150ms !important; scroll-behavior: auto !important; }
  .marquee__sweep { display: none; }
  .marquee__mark, .marquee__title, .marquee__kicker { animation-name: fade !important; }
}