/* HMND — site composition v3.0 · dark-first · tokens in styles/tokens.css */

/* —— Base —— */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  background: var(--color-bg);
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}

::selection {
  background: var(--color-accent);
  color: var(--color-ink);
}

img,
video,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--color-text);
  outline-offset: 3px;
}

p {
  margin: 0;
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: 500;
}

ul,
ol,
dl {
  margin: 0;
  padding: 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -100px;
  z-index: 300;
  background: var(--color-text);
  color: var(--color-bg);
  padding: var(--space-1) var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
}

.skip-link:focus {
  top: var(--space-2);
}

.container {
  width: min(100% - (var(--gutter) * 2), var(--container-max));
  margin-inline: auto;
}

.section {
  position: relative;
  padding-block: var(--section-py);
}

.section--tight {
  padding-block: var(--space-10);
}

.mono {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  font-weight: 500;
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
}

/* Paper sections re-scope the token set; components re-theme automatically */
.paper {
  --color-bg: var(--color-paper);
  --color-surface: var(--color-paper-2);
  --color-surface-2: var(--color-paper-2);
  --color-text: var(--color-ink);
  --color-text-muted: var(--color-ink-muted);
  --color-text-dim: #8a8a85;
  --color-border: var(--color-border-paper);
  --color-border-strong: #a9a9a3;
  background: var(--color-bg);
  color: var(--color-text);
}

/* —— Typography —— */
.display {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  font-weight: 500;
  line-height: var(--lh-display);
  letter-spacing: var(--track-display);
  max-width: 16ch;
  text-wrap: balance;
}

.display--sm {
  font-size: clamp(1.75rem, 3.1vw, 2.875rem);
  letter-spacing: -0.025em;
  max-width: 22ch;
}

.lead {
  font-size: clamp(1.25rem, 1.7vw, 1.5rem);
  line-height: 1.35;
  letter-spacing: -0.01em;
  max-width: var(--measure);
}

.inline-link {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
  text-decoration-color: var(--color-text-muted);
  transition: text-decoration-color var(--duration-fast) ease;
}

.inline-link:hover {
  text-decoration-color: currentColor;
}

/* Line mask reveal */
.line {
  display: block;
  overflow: hidden;
  padding-bottom: 0.06em;
  margin-bottom: -0.06em;
}

.line__inner {
  display: block;
}

.js .line__inner {
  transform: translateY(112%);
  transition: transform var(--duration-slow) var(--ease-out);
}

.js .line:nth-child(2) .line__inner { transition-delay: 90ms; }
.js .line:nth-child(3) .line__inner { transition-delay: 180ms; }
.js .line:nth-child(4) .line__inner { transition-delay: 270ms; }

.js .is-visible .line__inner {
  transform: translateY(0);
}

/* Block reveal (gated on .js so no-JS renders everything) */
.js .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity var(--duration-base) var(--ease-out),
    transform var(--duration-base) var(--ease-out);
}

.js .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.js .reveal:has(> .line) {
  opacity: 1;
  transform: none;
  transition: none;
}

.js .reveal-group .reveal:nth-child(2) { transition-delay: calc(var(--stagger) * 1); }
.js .reveal-group .reveal:nth-child(3) { transition-delay: calc(var(--stagger) * 2); }
.js .reveal-group .reveal:nth-child(4) { transition-delay: calc(var(--stagger) * 3); }
.js .reveal-group .reveal:nth-child(5) { transition-delay: calc(var(--stagger) * 4); }

/* —— Markers / readouts —— */
.marker {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-8);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  font-weight: 500;
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.marker__num {
  color: var(--color-text);
  min-width: 2ch;
}

.marker__rule {
  display: block;
  width: 40px;
  height: 1px;
  background: var(--color-border-strong);
  transform-origin: left center;
}

.js .reveal .marker__rule,
.js .marker.reveal .marker__rule {
  transform: scaleX(0);
  transition: transform var(--duration-slow) var(--ease-out) 120ms;
}

.js .is-visible .marker__rule,
.js .marker.is-visible .marker__rule {
  transform: scaleX(1);
}

.readout__key {
  color: var(--color-text);
}

.readout__sep {
  color: var(--color-text-dim);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4) var(--space-10);
  margin-bottom: var(--space-10);
}

.section-head .marker {
  margin-bottom: var(--space-6);
}

.section-head__aside {
  max-width: 36ch;
  color: var(--color-text-muted);
  padding-bottom: 0.35em;
}

.section-cta {
  margin-top: var(--space-10);
}

/* —— Buttons —— */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 14px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-none);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  font-weight: 500;
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  line-height: 1;
  cursor: pointer;
  transition:
    background var(--duration-fast) ease,
    color var(--duration-fast) ease,
    border-color var(--duration-fast) ease;
}

.btn::after {
  content: "→";
  display: inline-block;
  transition: transform var(--duration-base) var(--ease-out);
}

.btn:hover::after {
  transform: translateX(4px);
}

.btn--primary {
  background: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
}

.btn--primary:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-ink);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border-strong);
}

.btn--ghost:hover {
  border-color: var(--color-text);
}

/* —— Grid overlay —— */
.grid-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(to right, var(--color-border) 1px, transparent 1px);
  background-size: calc(100% / 6) 100%;
  opacity: 0.7;
  mask-image: linear-gradient(to bottom, transparent, #000 12%, #000 88%, transparent);
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 12%, #000 88%, transparent);
}

.grid-lines--faint {
  opacity: 0.4;
}

/* —— Media (reticle frame + placeholder) —— */
.media {
  --reticle-color: var(--color-text-muted);
  position: relative;
  margin: 0;
  overflow: hidden;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  aspect-ratio: var(--ar, 16 / 9);
}

.media > img,
.media > video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media::before {
  content: "";
  position: absolute;
  inset: 10px;
  z-index: 2;
  pointer-events: none;
  background:
    linear-gradient(var(--reticle-color), var(--reticle-color)) left top / var(--reticle) 1px,
    linear-gradient(var(--reticle-color), var(--reticle-color)) left top / 1px var(--reticle),
    linear-gradient(var(--reticle-color), var(--reticle-color)) right top / var(--reticle) 1px,
    linear-gradient(var(--reticle-color), var(--reticle-color)) right top / 1px var(--reticle),
    linear-gradient(var(--reticle-color), var(--reticle-color)) left bottom / var(--reticle) 1px,
    linear-gradient(var(--reticle-color), var(--reticle-color)) left bottom / 1px var(--reticle),
    linear-gradient(var(--reticle-color), var(--reticle-color)) right bottom / var(--reticle) 1px,
    linear-gradient(var(--reticle-color), var(--reticle-color)) right bottom / 1px var(--reticle);
  background-repeat: no-repeat;
  opacity: 0.8;
}

.media__caption {
  position: absolute;
  top: 20px;
  left: 22px;
  z-index: 3;
  color: var(--color-text-muted);
}

.media--placeholder {
  background-color: var(--color-surface-2);
  background-image: repeating-linear-gradient(
    135deg,
    transparent 0 18px,
    var(--color-border) 18px 19px
  );
}

.media--placeholder::after {
  content: "Placeholder — " attr(data-ad);
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 20px;
  z-index: 3;
  max-width: 52ch;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--color-text-muted);
}

.media--placeholder:has(> img, > video) {
  background-image: none;
}

.media--placeholder:has(> img, > video)::after {
  display: none;
}

/* —— Header —— */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  pointer-events: none;
  /* Difference blend against page content: white over dark, ink over paper.
     Must sit on the fixed element itself, not a child, to blend with the page. */
  color: #fff;
  mix-blend-mode: difference;
}

.site-header__bar {
  position: relative;
  z-index: 2;
  height: var(--header-h);
  pointer-events: auto;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: 100%;
}

.logo {
  display: inline-flex;
  align-items: center;
  color: inherit;
}

.logo__mark {
  width: auto;
  height: 14px;
}

.nav {
  display: none;
  gap: var(--space-4);
  align-items: center;
  margin-left: auto;
}

.nav a {
  position: relative;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  font-weight: 500;
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  padding-block: 4px;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--duration-base) var(--ease-out);
}

.nav a:hover::after,
.nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav__vision {
  padding-right: 10px;
}

.nav__dot {
  position: absolute;
  top: 2px;
  right: 0;
  width: 5px;
  height: 5px;
  border-radius: var(--radius-pill);
  background: currentColor;
}

.site-header__readout {
  display: none;
  color: inherit;
  opacity: 0.7;
  font-variant-numeric: tabular-nums;
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  margin-right: -10px;
  padding: 0 10px;
  background: none;
  border: none;
  cursor: pointer;
  color: inherit;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1px;
  background: currentColor;
  transition: transform var(--duration-base) var(--ease-out);
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(3.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}

.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 1;
  padding-top: var(--header-h);
  background: var(--color-bg);
  color: var(--color-text);
  pointer-events: auto;
  overflow-y: auto;
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav__inner {
  display: flex;
  flex-direction: column;
  padding-block: var(--space-6) var(--space-10);
  min-height: calc(100% - var(--header-h));
}

.mobile-nav a {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 8vw, 2.5rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1;
}

.mobile-nav a .mono {
  color: var(--color-text-dim);
}

.mobile-nav__foot {
  margin-top: auto;
  padding-top: var(--space-8);
  color: var(--color-text-dim);
  text-transform: none;
  letter-spacing: 0.02em;
}

body.nav-open {
  overflow: hidden;
}

@media (min-width: 900px) {
  .nav {
    display: flex;
  }

  .site-header__readout {
    display: block;
  }

  .nav-toggle,
  .mobile-nav {
    display: none !important;
  }
}

/* —— Hero —— */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  isolation: isolate;
  background: var(--color-bg);
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
  border: none;
  aspect-ratio: auto;
  background-color: var(--color-surface);
  container-type: size;
}

.hero__media::before {
  display: none;
}

.hero__stage {
  position: absolute;
  top: 50%;
  left: 50%;
  width: max(100cqw, calc(100cqh * 1289 / 832));
  height: max(100cqh, calc(100cqw * 832 / 1289));
  transform: translate(-50%, -50%);
  animation: kenburns 28s var(--ease-inout) infinite alternate;
}

.hero__stage > video,
.hero__stage > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: fill;
}

.hero__screen {
  position: absolute;
  z-index: 2;
  left: calc(437 / 1289 * 100%);
  top: calc(127 / 832 * 100%);
  width: calc(414 / 1289 * 100%);
  height: calc(231 / 832 * 100%);
  overflow: hidden;
  isolation: isolate;
  background: #000;
  pointer-events: none;
}

.hero__screen-viz {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero__screen-viz canvas {
  display: block;
  width: 100%;
  height: 100%;
}

@keyframes kenburns {
  from { transform: translate(-50%, -50%) scale(1); }
  to { transform: translate(-50%, -50%) scale(1.06); }
}

.hero__media.media--placeholder::after {
  display: none;
  left: auto;
  right: var(--gutter);
  bottom: auto;
  top: calc(var(--header-h) + var(--space-4));
  max-width: 34ch;
  text-align: right;
}

@media (min-width: 900px) {
  .hero__media.media--placeholder::after {
    display: block;
  }
}

.hero__scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(to bottom, rgba(10, 10, 9, 0.75), transparent 28%),
    linear-gradient(to top, rgba(10, 10, 9, 0.92) 0%, rgba(10, 10, 9, 0.55) 40%, transparent 70%);
}

.hero__media .grid-lines {
  z-index: 2;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  flex: 1;
  padding-top: calc(var(--header-h) + var(--space-10));
  padding-bottom: var(--space-10);
}

.hero__eyebrow {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  color: var(--color-text-muted);
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--fs-hero);
  font-weight: 500;
  line-height: var(--lh-display);
  letter-spacing: var(--track-display);
  max-width: 24ch;
  margin-bottom: var(--space-8);
}

.hero__foot {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: end;
  padding-top: var(--space-6);
  /* border-top: 1px solid var(--color-border-strong); */
  border-top: none;
}

.hero__sub {
  max-width: 46ch;
  font-size: var(--fs-body-lg);
  color: var(--color-text-muted);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.hero__corners {
  position: absolute;
  inset: auto 0 0 0;
  z-index: 1;
  display: none;
  justify-content: space-between;
  width: min(100% - (var(--gutter) * 2), var(--container-max));
  margin-inline: auto;
  padding-bottom: var(--space-4);
  color: var(--color-text-dim);
}

.hero__corner--br {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.blink {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  animation: blink 1.8s steps(1, end) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

@media (min-width: 900px) {
  .hero__inner {
    padding-bottom: var(--space-12);
  }

  .hero__foot {
    grid-template-columns: 7fr 5fr;
    gap: var(--space-10);
  }

  .hero__actions {
    justify-content: flex-end;
  }

  .hero__corners {
    display: flex;
  }
}

/* —— Principles strip —— */
.strip {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}

.strip__inner {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  color: var(--color-text-muted);
}

.strip__inner span {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-3) 0;
}

.strip__inner span:nth-child(odd) {
  padding-right: var(--space-3);
  border-right: 1px solid var(--color-border);
}

.strip__inner span:nth-child(even) {
  padding-left: var(--space-3);
}

.strip__inner span:nth-child(-n + 2) {
  border-bottom: 1px solid var(--color-border);
}

.strip__inner b {
  font-weight: 500;
  color: var(--color-text-dim);
}

@media (min-width: 900px) {
  .strip__inner {
    grid-template-columns: repeat(4, 1fr);
  }

  .strip__inner span {
    padding: var(--space-3) var(--space-3);
    border-right: 1px solid var(--color-border);
    border-bottom: none !important;
  }

  .strip__inner span:first-child {
    padding-left: 0;
  }

  .strip__inner span:last-child {
    border-right: none;
    padding-right: 0;
  }
}

/* —— Proof —— */
.proof {
  background: var(--color-bg);
}

.proof__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
}

.stat {
  display: block;
  margin-bottom: var(--space-8);
}

.stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-stat);
  font-weight: 500;
  line-height: 0.9;
  letter-spacing: -0.05em;
  text-transform: none;
  font-variant-numeric: tabular-nums;
}

.stat__caption {
  display: block;
  margin-top: var(--space-3);
  max-width: 30ch;
  font-size: var(--fs-small);
  font-weight: 400;
  color: var(--color-text-muted);
}

.proof__media {
  --ar: 4 / 5;
  max-width: 440px;
}

.steps {
  list-style: none;
  border-top: 1px solid var(--color-border);
  align-self: start;
}

.steps__item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: var(--space-3);
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.steps__num {
  color: var(--color-text-dim);
  padding-top: 0.35em;
}

.steps__item p {
  font-size: var(--fs-body-lg);
  max-width: 44ch;
  color: var(--color-text-muted);
}

.steps__item--close p {
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: clamp(1.375rem, 2vw, 1.75rem);
  line-height: 1.25;
  letter-spacing: -0.015em;
}

@media (min-width: 900px) {
  .proof__grid {
    grid-template-columns: 5fr 7fr;
    gap: var(--space-15);
    align-items: start;
  }

  .steps {
    padding-top: var(--space-2);
  }
}

/* —— Lights on (start, contact) —— */
/* Default state is lit (paper) so no-JS renders normally.
   With JS the room's background starts dark; once 28% of the section has
   scrolled into view, main.js adds .is-lit and it simply transitions to
   paper. The text is ALWAYS ink-black — it is never itself recoloured. It
   goes from illegible (black on near-black) to legible (black on paper)
   purely because the background changed underneath it. */
.start,
.contact {
  --color-bg: var(--color-paper);
  --color-surface: var(--color-paper-2);
  --color-surface-2: var(--color-paper-2);
  --color-text: var(--color-ink);
  --color-text-muted: var(--color-ink-muted);
  --color-text-dim: #8a8a85;
  --color-border: var(--color-border-paper);
  --color-border-strong: #a9a9a3;
  background-color: var(--color-bg);
  color: var(--color-text);
  transition: background-color var(--duration-slow) var(--ease-out);
}

.js .start:not(.is-lit),
.js .contact:not(.is-lit) {
  --color-bg: #0a0a09;
  --color-surface: #111110;
  --color-surface-2: #171716;
  --color-border: #1a1a18;
  --color-border-strong: #24241f;
}

/* Homepage footer rides the contact lights so the page ends on paper,
   not a dark strip under a white room. */
body:has(#contact[data-lights]) .site-footer {
  --color-bg: var(--color-paper);
  --color-surface: var(--color-paper-2);
  --color-surface-2: var(--color-paper-2);
  --color-text: var(--color-ink);
  --color-text-muted: var(--color-ink-muted);
  --color-text-dim: #8a8a85;
  --color-border: var(--color-border-paper);
  --color-border-strong: #a9a9a3;
  background-color: var(--color-bg);
  border-top-color: var(--color-border);
  transition:
    background-color var(--duration-slow) var(--ease-out),
    border-color var(--duration-slow) var(--ease-out);
}

.js body:has(#contact:not(.is-lit)) .site-footer {
  --color-bg: #0a0a09;
  --color-surface: #111110;
  --color-surface-2: #171716;
  --color-border: #1a1a18;
  --color-border-strong: #24241f;
}

/* Borders fade in with the background (never the text color). Scoped to just
   the bordered rows — a broader :is() list here would out-specificity the
   .reveal transition below and silently kill the fade/rise on everything
   else in the section (the pronounce line, the CTA, etc). */
.start :is(.spec, .spec__row),
.contact :is(.ledger, .ledger div, .form__row input, .form__row textarea, .form__row select) {
  transition: border-color var(--duration-slow) var(--ease-out);
}

.start .reveal,
.contact .reveal {
  transition:
    opacity var(--duration-base) var(--ease-out),
    transform var(--duration-base) var(--ease-out),
    border-color var(--duration-slow) var(--ease-out);
}

.start__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

.start__head .display {
  margin-top: 0;
}

.start__lamp {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-left: var(--space-2);
  border: 1px solid currentColor;
  transition:
    background-color var(--duration-fast) ease,
    border-color var(--duration-fast) ease,
    box-shadow var(--duration-slow) var(--ease-out);
}

.js .start.is-lit .start__lamp {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  box-shadow: 0 0 18px 2px color-mix(in srgb, var(--color-accent) 55%, transparent);
}

.start__note {
  margin-top: var(--space-4);
  max-width: var(--measure);
  color: var(--color-text-muted);
}

.start .spec {
  margin-top: var(--space-8);
}

.pronounce {
  margin-top: var(--space-10);
  max-width: 30ch;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.6vw, 2.25rem);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.start__cta {
  margin-top: var(--space-8);
}

@media (min-width: 900px) {
  .start__grid {
    grid-template-columns: 4fr 8fr;
    gap: var(--space-15);
    align-items: start;
  }

  .start__head {
    position: sticky;
    top: calc(var(--header-h) + var(--space-6));
  }
}

/* —— Intermezzo (degenerate sequence) —— */
.intermezzo {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100svh;
  background: var(--color-bg);
  color: var(--color-text);
  overflow: hidden;
}

.intermezzo__stage {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) var(--gutter);
}

.intermezzo__seq {
  display: flex;
  justify-content: center;
  gap: clamp(12px, 3vw, 40px);
  font-family: var(--font-mono);
  font-size: clamp(4.25rem, 16vw, 13rem);
  font-weight: 500;
  line-height: 0.85;
  letter-spacing: -0.04em;
  user-select: none;
}

.intermezzo__letter {
  display: block;
  width: 1ch;
  text-align: center;
  color: var(--color-text);
  cursor: default;
  touch-action: pan-y;
  transition: color var(--duration-fast) ease;
}

.intermezzo__letter.is-held {
  color: var(--color-accent);
}

.intermezzo__corners {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-3);
  width: min(100% - (var(--gutter) * 2), var(--container-max));
  margin-inline: auto;
  padding-bottom: var(--space-4);
  color: var(--color-text-dim);
}

.intermezzo__key {
  display: none;
}

@media (min-width: 900px) {
  .intermezzo__key {
    display: inline;
  }
}

/* —— Thesis (paper) —— */
.thesis .display {
  margin-bottom: var(--space-10);
}

.thesis__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
}

.thesis__prose p + p {
  margin-top: var(--space-4);
  max-width: var(--measure);
  color: var(--color-text-muted);
}

.principal__portrait {
  --ar: 4 / 5;
  margin-bottom: var(--space-4);
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}

.principal__face--fun {
  z-index: 1;
  opacity: 0;
  pointer-events: none;
}

.principal__portrait:hover .principal__face--fun,
.principal__portrait.is-pressed .principal__face--fun {
  opacity: 1;
}

.ledger div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: var(--space-3);
  padding-block: var(--space-2);
  border-top: 1px solid var(--color-border);
}

.ledger div:last-child {
  border-bottom: 1px solid var(--color-border);
}

.ledger dt {
  color: var(--color-text-muted);
  padding-top: 0.3em;
}

.ledger dd {
  margin: 0;
  font-size: var(--fs-small);
  line-height: 1.5;
}

.ledger--dark dd {
  font-size: var(--fs-body);
}

@media (min-width: 900px) {
  .thesis__grid {
    grid-template-columns: 7fr 4fr;
    gap: var(--space-15);
    align-items: start;
  }
}

/* —— Method —— */
.method__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

.method__intro {
  margin-top: var(--space-4);
  max-width: 34ch;
  color: var(--color-text-muted);
}

.method__list {
  list-style: none;
  border-top: 1px solid var(--color-border);
}

.method__item {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: var(--space-3);
  padding-block: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.method__num {
  color: var(--color-text-dim);
  padding-top: 0.5em;
}

.method__item h3 {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: 500;
  line-height: var(--lh-tight);
  letter-spacing: -0.015em;
  margin-bottom: var(--space-2);
}

.method__item p {
  max-width: var(--measure);
  color: var(--color-text-muted);
}

@media (min-width: 900px) {
  .method__grid {
    grid-template-columns: 4fr 8fr;
    gap: var(--space-15);
    align-items: start;
  }

  .method__head {
    position: sticky;
    top: calc(var(--header-h) + var(--space-6));
  }

  .method__item {
    grid-template-columns: 96px 1fr;
    gap: var(--space-6);
  }
}

/* —— Field record —— */
.cases {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8) var(--space-4);
}

.case {
  display: block;
  color: inherit;
}

.case__media {
  --ar: 16 / 9;
  margin-bottom: var(--space-3);
}

.case__meta {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
  color: var(--color-text-muted);
}

.case__title {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: 500;
  line-height: var(--lh-tight);
  letter-spacing: -0.015em;
  margin-bottom: var(--space-2);
}

.case__summary {
  color: var(--color-text-muted);
  max-width: 52ch;
  margin-bottom: var(--space-2);
}

.case__outcome {
  color: var(--color-text);
  max-width: 44ch;
}

.case__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: var(--space-3);
  color: var(--color-text-muted);
}

.case__link .arrow {
  display: inline-block;
  transition: transform var(--duration-base) var(--ease-out);
}

.case:hover .case__link .arrow {
  transform: translateX(4px);
}

.case--featured .case__media {
  --ar: 21 / 9;
}

@media (min-width: 900px) {
  .cases {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-10) var(--space-4);
  }

  .case--featured {
    grid-column: 1 / -1;
  }

  .case--featured .case__body {
    display: grid;
    grid-template-columns: 5fr 7fr;
    gap: var(--space-10);
    align-items: start;
  }

  .case--featured .case__meta {
    grid-column: 1 / -1;
  }

  .case--featured .case__title {
    font-size: clamp(1.75rem, 2.6vw, 2.25rem);
    margin: 0;
  }

  .case--featured .case__link {
    grid-column: 2;
  }
}

/* —— Teams —— */
.teams {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.teams .marker {
  margin-bottom: var(--space-6);
}

.teams__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 var(--space-4);
  list-style: none;
  color: var(--color-text-muted);
}

.teams__list li {
  padding-block: 10px;
  border-bottom: 1px solid var(--color-border);
}

@media (min-width: 700px) {
  .teams__list {
    grid-template-columns: repeat(5, 1fr);
  }
}

/* —— Open problems —— */
.problems__list {
  list-style: none;
  border-top: 1px solid var(--color-border);
}

.problems__list li {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: var(--space-3);
  align-items: baseline;
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.2vw, 2rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: var(--lh-tight);
}

.problems__list li .mono {
  color: var(--color-text-dim);
}

@media (min-width: 900px) {
  .problems__list li {
    grid-template-columns: 96px 1fr;
    gap: var(--space-6);
  }
}

/* —— Vision —— */
.vision__feed {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}

.vision-tile {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  min-height: 140px;
  transition: border-color var(--duration-fast) ease;
}

.vision-tile:hover,
.vision-tile:focus-visible {
  border-color: var(--color-border-strong);
}

.vision-tile__date {
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
}

.vision-tile__title {
  font-family: var(--font-display);
  font-size: var(--fs-body-lg);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.vision-tile__excerpt {
  font-size: var(--fs-small);
  color: var(--color-text-muted);
}

.vision-tile--featured {
  padding: var(--space-6);
  min-height: 260px;
  justify-content: flex-end;
}

.vision-tile--featured .vision-tile__title {
  font-size: var(--fs-h3);
  max-width: 28ch;
}

.vision-tile--small .vision-tile__excerpt {
  display: none;
}

.vision__skeleton {
  display: contents;
}

.vision__skel {
  min-height: 140px;
  border: 1px solid var(--color-border);
  background: linear-gradient(90deg, var(--color-surface) 0%, var(--color-surface-2) 50%, var(--color-surface) 100%);
  background-size: 200% 100%;
  animation: shimmer 1.6s ease infinite;
}

.vision__skel--lg {
  min-height: 260px;
}

@keyframes shimmer {
  0% { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

@media (min-width: 768px) {
  .vision__feed {
    grid-template-columns: repeat(6, 1fr);
  }

  .vision-tile--featured,
  .vision__skel--lg {
    grid-column: span 4;
    grid-row: span 2;
  }

  .vision-tile--medium,
  .vision-tile--small,
  .vision__skel:not(.vision__skel--lg) {
    grid-column: span 2;
  }
}

/* —— Contact —— */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
}

.contact__copy .display {
  margin-bottom: var(--space-8);
}

.form {
  display: grid;
  gap: var(--space-4);
  align-self: start;
}

.form__row {
  display: grid;
  gap: var(--space-1);
}

.form__row label {
  color: var(--color-text-muted);
}

.form__optional {
  margin-left: 8px;
  color: var(--color-text-dim);
}

.form__row input,
.form__row textarea,
.form__row select {
  width: 100%;
  padding: 12px 0;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--color-border-strong);
  border-radius: var(--radius-none);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--duration-fast) ease, box-shadow var(--duration-fast) ease;
}

.form__row textarea {
  resize: vertical;
  min-height: 120px;
}

.form__row select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--color-text-muted) 50%),
    linear-gradient(135deg, var(--color-text-muted) 50%, transparent 50%);
  background-position: calc(100% - 12px) 55%, calc(100% - 6px) 55%;
  background-size: 6px 6px;
  background-repeat: no-repeat;
  padding-right: 28px;
}

.form__row select option {
  background: var(--color-surface);
  color: var(--color-text);
}

.form__row input:focus,
.form__row textarea:focus,
.form__row select:focus {
  border-color: var(--color-text);
  box-shadow: 0 1px 0 var(--color-text);
}

.form__row input:user-invalid,
.form__row textarea:user-invalid {
  border-color: #d9534f;
}

.form__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding-top: var(--space-2);
}

.form__status {
  min-height: 1.2em;
  color: var(--color-text-muted);
  text-transform: none;
  letter-spacing: 0.02em;
}

@media (min-width: 900px) {
  .contact__grid {
    grid-template-columns: 5fr 6fr;
    gap: var(--space-15);
    align-items: start;
  }
}

/* —— Footer —— */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-10) var(--space-8);
  color: var(--color-text-muted);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

.site-footer__mark {
  width: 120px;
  height: auto;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.site-footer__tag {
  max-width: 28ch;
  font-size: var(--fs-small);
}

.site-footer__nav,
.site-footer__readout {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.site-footer__nav a:hover,
.site-footer__readout a:hover {
  color: var(--color-text);
}

.site-footer__readout {
  color: var(--color-text-dim);
}

@media (min-width: 900px) {
  .site-footer__grid {
    grid-template-columns: 6fr 3fr 3fr;
    gap: var(--space-10);
  }
}

/* —— Works index —— */
.page-head {
  padding-top: calc(var(--header-h) + var(--space-15));
  padding-bottom: var(--space-10);
}

.page-head .display {
  margin-bottom: var(--space-4);
}

.page-head__intro {
  max-width: 44ch;
  font-size: var(--fs-body-lg);
  color: var(--color-text-muted);
}

.page-head .ledger {
  margin-top: var(--space-8);
}

.page-head .btn {
  margin-top: var(--space-8);
}

.works {
  padding-bottom: var(--section-py);
}

.tiles {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10) var(--space-4);
}

.tile {
  display: block;
}

.tile__media {
  --ar: 16 / 10;
  margin-bottom: var(--space-3);
  transition: border-color var(--duration-fast) ease;
}

.tile:hover .tile__media,
.tile:focus-visible .tile__media {
  border-color: var(--color-border-strong);
}

.tile__meta {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
  color: var(--color-text-muted);
}

.tile__title {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: 500;
  line-height: var(--lh-tight);
  letter-spacing: -0.015em;
  max-width: 24ch;
}

@media (min-width: 900px) {
  .tiles {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* —— Case study page —— */
.study {
  padding-top: calc(var(--header-h) + var(--space-12));
  padding-bottom: var(--section-py);
}

.back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: var(--space-8);
  color: var(--color-text-muted);
  transition: color var(--duration-fast) ease;
}

.back:hover {
  color: var(--color-text);
}

.study__head {
  margin-bottom: var(--space-10);
}

.study__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  color: var(--color-text-muted);
}

.study__head .display {
  margin-bottom: var(--space-4);
}

.study__sub {
  max-width: 46ch;
  font-size: var(--fs-body-lg);
  color: var(--color-text-muted);
}

.study__hero {
  --ar: 21 / 9;
  margin-bottom: var(--space-12);
}

.study__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-15);
}

.study__summary {
  margin-bottom: var(--space-6);
}

.spec {
  border-top: 1px solid var(--color-border);
}

.spec__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.spec__row dt {
  color: var(--color-text-muted);
  padding-top: 0.3em;
}

.spec__row dd {
  margin: 0;
}

.spec__list {
  list-style: none;
  display: grid;
  gap: var(--space-2);
}

.spec__list li {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: var(--space-2);
}

.spec__list li .mono {
  color: var(--color-text-dim);
  padding-top: 0.35em;
}

.spec__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.spec__tags li {
  padding: 6px 10px;
  border: 1px solid var(--color-border-strong);
  color: var(--color-text-muted);
}

.study__gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-15);
}

.study__next {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.study__next-label {
  color: var(--color-text-muted);
}

.study__next-link {
  font-family: var(--font-display);
  font-size: clamp(1.375rem, 2.4vw, 2rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: var(--lh-tight);
}

.study__next-link:hover {
  text-decoration: underline;
  text-underline-offset: 0.2em;
  text-decoration-thickness: 1px;
}

@media (min-width: 900px) {
  .study__grid {
    grid-template-columns: 5fr 7fr;
    gap: var(--space-15);
    align-items: start;
  }

  .spec__row {
    grid-template-columns: 160px 1fr;
    gap: var(--space-6);
  }

  .study__gallery {
    grid-template-columns: 1fr 1fr;
  }
}

/* —— Reduced motion —— */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .js .reveal,
  .js .line__inner,
  .js .marker__rule {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero__stage,
  .vision__skel,
  .blink {
    animation: none;
  }

  .start,
  .contact,
  body:has(#contact[data-lights]) .site-footer,
  .start :is(p, h2, dt, dd, span, div, dl, a:not(.btn)),
  .contact :is(p, h2, dt, dd, span, div, dl, a:not(.btn), form, label, input, textarea, select, button),
  .start__lamp,
  .intermezzo__letter {
    transition: none;
  }

  .btn::after,
  .case__link .arrow,
  .nav a::after {
    transition: none;
  }
}