/* Hallmark · genre: atmospheric · macrostructure: Stat-Led · H4 stat knobs: number=mono-tabular, qualifier=below, secondary=two-below
 * theme: custom · vibe: "midnight rate desk, signal amber, wire calm" · paper: oklch(15% 0.015 250) · accent: oklch(80% 0.15 75)
 * display: Space Grotesk · body: Geist · outlier: JetBrains Mono (role: operational data — figures, ledger, spec table)
 * axes: dark / grotesk-sans / chromatic-amber · nav: N9 edge-aligned · footer: Ft5 statement · enrichment: Tier-A CSS signal-ledger panel
 * studied: no · context: inferred (LOs & branch managers · founding-access signup · technical direct-response) · v0.8.0
 * pre-emit critique: P5 H4 E4 S5 R4 V5
 */

* { margin: 0; padding: 0; box-sizing: border-box; }

html { overflow-x: clip; scroll-behavior: smooth; }
body {
  overflow-x: clip;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-weight: 350;
  font-size: var(--text-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* single fixed amber bloom, upper right — the atmosphere */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(42rem 30rem at 85% -8%, var(--color-accent-dim), transparent 68%),
    radial-gradient(30rem 22rem at -10% 105%, oklch(80% 0.15 75 / 0.05), transparent 70%);
}

body > * { position: relative; z-index: var(--z-base); }

img { max-width: 100%; height: auto; }

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

a { color: var(--color-ink); }
a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: 2px;
}

.wrap {
  max-width: var(--page-max);
  margin-inline: auto;
  padding-inline: var(--page-gutter);
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: clip;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* ---------- type voices ---------- */

h1, h2, h3 {
  font-family: var(--font-display);
  font-style: normal;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
  overflow-wrap: anywhere;
  min-width: 0;
}

.data {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-muted);
}

/* ---------- nav · N9 edge-aligned minimal ---------- */

.nav-edge {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg) var(--page-gutter);
  max-width: var(--page-max);
  margin-inline: auto;
}
.wordmark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-md);
  letter-spacing: -0.02em;
  text-decoration: none;
  white-space: nowrap;
}
.wordmark .tick { color: var(--color-accent); }

.btn-ghost {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-ink);
  text-decoration: none;
  white-space: nowrap;
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-pill);
  padding: var(--space-xs) var(--space-md);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  transition: border-color var(--dur-short) var(--ease-out), transform var(--dur-micro) var(--ease-out);
}
.btn-ghost:hover { border-color: var(--color-accent); }
.btn-ghost:active { transform: translateY(1px); }

/* ---------- hero · H4 stat-led, left-biased ---------- */

.hero {
  padding-block: var(--space-2xl) var(--space-3xl);
}
.hero__stat { max-width: 100%; }
.figure {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: var(--text-figure);
  line-height: 0.95;
  letter-spacing: -0.04em;
  display: block;
}
.figure__label {
  display: block;
  margin-top: var(--space-xs);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: end;
}
.hero__head {
  font-size: var(--text-display-s);
  max-width: 16ch;
  margin-top: var(--space-xl);
}
.hero__head .first { color: var(--color-accent); }
.hero__sub {
  margin-top: var(--space-lg);
  max-width: 54ch;
  color: var(--color-ink-2);
  font-size: var(--text-md);
  line-height: 1.55;
}
.hero__cta {
  margin-top: var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.btn-primary {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--text-base);
  color: var(--color-accent-ink);
  background: var(--color-accent);
  border: 0;
  border-radius: var(--radius-pill);
  padding: var(--space-sm) var(--space-lg);
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: transform var(--dur-micro) var(--ease-out), filter var(--dur-short) var(--ease-out);
}
.btn-primary:hover { transform: translateY(-1.5px); filter: brightness(1.06); }
.btn-primary:active { transform: translateY(1px); }

.link-arrow {
  font-size: var(--text-base);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid var(--color-rule);
  padding-bottom: 2px;
  white-space: nowrap;
  transition: border-color var(--dur-short) var(--ease-out);
}
.link-arrow:hover { border-color: var(--color-accent); }

.hero__facts {
  margin-top: var(--space-2xl);
  padding-top: var(--space-md);
  border-top: var(--rule-hair) solid var(--color-rule-2);
  display: flex;
  gap: var(--space-xl);
  flex-wrap: wrap;
}
.hero__facts .data {
  font-size: var(--text-sm);
  color: var(--color-muted);
}
.hero__facts .data b { color: var(--color-ink); font-weight: 500; }

@media (min-width: 60rem) {
  .hero__grid { grid-template-columns: 1.15fr 0.85fr; }
  .hero__head { margin-top: 0; }
}

/* ---------- signal ledger · Tier-A CSS artefact ---------- */

.ledger { padding-block: 0 var(--space-3xl); }
.ledger__panel {
  background: var(--color-paper-2);
  border: var(--rule-hair) solid var(--color-rule-2);
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-lg) var(--space-md);
  max-width: 46rem;
}
.ledger__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: var(--rule-hair) solid var(--color-rule);
}
.ledger__rows {
  list-style: none;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-sm);
  line-height: 1.5;
}
.ledger__rows li {
  display: grid;
  grid-template-columns: 4.5ch minmax(0, 1fr);
  gap: var(--space-md);
  padding-block: var(--space-sm);
  border-bottom: var(--rule-hair) solid var(--color-rule-2);
}
.ledger__rows li:last-child { border-bottom: 0; }
.ledger__rows .t { color: var(--color-muted); }
.ledger__rows .sig { color: var(--color-accent); font-weight: 500; }
.ledger__note {
  margin-top: var(--space-sm);
  font-size: var(--text-xs);
  color: var(--color-muted);
  max-width: 46rem;
}

@media (min-width: 60rem) {
  /* deliberate grid-break: the panel steps out of the text column */
  .ledger__panel { margin-left: calc(var(--space-2xl) * -0.5); }
}

/* ---------- sections ---------- */

section h2 {
  font-size: var(--text-2xl);
  max-width: 22ch;
}

.proof { padding-block: var(--space-3xl); border-top: var(--rule-hair) solid var(--color-rule-2); }
.proof__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}
.proof__big {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(3rem, 7vw, 5.5rem);
  line-height: 1;
  letter-spacing: -0.03em;
}
.proof__big small {
  display: block;
  margin-top: var(--space-xs);
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-muted);
}
.proof__prose { max-width: 58ch; color: var(--color-ink-2); display: grid; gap: var(--space-md); }
.proof__prose strong { color: var(--color-ink); font-weight: 500; }
.proof__src {
  font-size: var(--text-xs);
  color: var(--color-muted);
}
.proof__src a { color: var(--color-muted); }

@media (min-width: 60rem) {
  .proof__grid { grid-template-columns: 0.8fr 1.2fr; align-items: start; }
}

/* ---------- how it works · F4 step sequence ---------- */

.how { padding-block: var(--space-3xl); border-top: var(--rule-hair) solid var(--color-rule-2); }
.steps {
  list-style: none;
  margin-top: var(--space-xl);
  display: grid;
  gap: var(--space-xl);
  max-width: 46rem;
}
.steps li {
  display: grid;
  grid-template-columns: 3.5ch minmax(0, 1fr);
  gap: var(--space-lg);
  position: relative;
}
.steps .stage {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-accent);
  padding-top: var(--space-2xs);
}
/* connector line between stages */
.steps li:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 1ch;
  top: 2.2rem;
  bottom: calc(var(--space-xl) * -1 + 0.4rem);
  width: 1px;
  background: var(--color-rule);
}
.steps h3 { font-size: var(--text-lg); margin-bottom: var(--space-xs); }
.steps p { color: var(--color-ink-2); max-width: 52ch; }

/* ---------- the math · F3 tabular spec sheet ---------- */

.math { padding-block: var(--space-3xl); border-top: var(--rule-hair) solid var(--color-rule-2); }
.spec {
  margin-top: var(--space-xl);
  width: 100%;
  max-width: 46rem;
  border-collapse: collapse;
  font-size: var(--text-base);
}
.spec th, .spec td { text-align: left; padding: var(--space-md) var(--space-md) var(--space-md) 0; vertical-align: top; }
.spec tr { border-bottom: var(--rule-hair) solid var(--color-rule-2); }
.spec th { font-weight: 350; color: var(--color-ink-2); width: 45%; }
.spec td.v {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 500;
  white-space: nowrap;
}
.spec td.note { color: var(--color-muted); font-size: var(--text-sm); }
.math__close {
  margin-top: var(--space-xl);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  letter-spacing: -0.02em;
  max-width: 24ch;
  line-height: 1.2;
  font-weight: 700;
}
.math__close .buy { color: var(--color-accent); }

@media (max-width: 40rem) {
  .spec td.note { display: none; }
  .spec td.v { white-space: normal; }
}

/* ---------- pricing ---------- */

.pricing { padding-block: var(--space-3xl); border-top: var(--rule-hair) solid var(--color-rule-2); }
.tiers {
  margin-top: var(--space-xl);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}
.tier {
  background: var(--color-paper-2);
  border: var(--rule-hair) solid var(--color-rule-2);
  border-radius: var(--radius-md);
  padding: var(--space-xl) var(--space-lg);
  display: grid;
  gap: var(--space-md);
  align-content: start;
  transition: transform var(--dur-short) var(--ease-out), border-color var(--dur-short) var(--ease-out);
}
@media (hover: hover) and (pointer: fine) {
  .tier:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
    background: var(--color-paper-3);
  }
  .tier:hover .tier__price { color: var(--color-accent); }
}
.tier--mid { background: var(--color-paper-3); }
.tier__tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.tier h3 { font-size: var(--text-lg); }
.tier__price {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
}
.tier__price small { font-size: var(--text-sm); font-weight: 400; color: var(--color-muted); letter-spacing: 0; }
.tier__for { color: var(--color-muted); font-size: var(--text-sm); margin-top: calc(var(--space-xs) * -1); }
.tier ul { list-style: none; display: grid; gap: var(--space-xs); color: var(--color-ink-2); font-size: var(--text-sm); }
.tier ul li { padding-left: var(--space-md); position: relative; }
.tier ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.62em;
  width: 5px; height: 5px;
  background: var(--color-neutral);
}
.tier--mid ul li::before { background: var(--color-accent); }

.founding {
  margin-block: var(--space-xl) var(--space-lg);
  background: var(--color-accent);
  color: var(--color-accent-ink);
  border-radius: var(--radius-md);
  padding: var(--space-xl) var(--space-lg);
  display: grid;
  gap: var(--space-lg);
  align-items: center;
}
.founding__tag {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.founding__title {
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-top: var(--space-2xs);
}
.founding__body {
  margin-top: var(--space-sm);
  font-size: var(--text-base);
  max-width: 56ch;
}
.founding p { color: var(--color-accent-ink); }
.btn-founding {
  justify-self: start;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--text-base);
  color: var(--color-accent);
  background: var(--color-accent-ink);
  border-radius: var(--radius-pill);
  padding: var(--space-sm) var(--space-lg);
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  white-space: nowrap;
  transition: transform var(--dur-micro) var(--ease-out), filter var(--dur-short) var(--ease-out);
}
.btn-founding:hover { transform: translateY(-1.5px); filter: brightness(1.25); }
.btn-founding:active { transform: translateY(1px); }
.btn-founding:focus-visible { outline: 2px solid var(--color-accent-ink); outline-offset: 3px; }
@media (min-width: 60rem) {
  .founding { grid-template-columns: minmax(0, 1fr) auto; padding-inline: var(--space-xl); }
  .btn-founding { justify-self: end; }
}
.pricing__terms {
  margin-top: var(--space-lg);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-muted);
  letter-spacing: 0.03em;
}

@media (min-width: 60rem) {
  .tiers { grid-template-columns: 1fr 1.15fr 1fr; align-items: start; }
}

/* ---------- faq ---------- */

.faq { padding-block: var(--space-3xl); border-top: var(--rule-hair) solid var(--color-rule-2); }
.faq__list { margin-top: var(--space-xl); max-width: 46rem; }
.faq details { border-bottom: var(--rule-hair) solid var(--color-rule-2); }
.faq summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-md);
  padding-block: var(--space-md);
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-md);
  letter-spacing: -0.01em;
  min-height: 44px;
}
.faq summary::-webkit-details-marker { display: none; }
@media (hover: hover) and (pointer: fine) {
  .faq summary:hover::after { color: var(--color-accent); }
}
.faq summary::after {
  content: "+";
  font-family: var(--font-mono);
  color: var(--color-muted);
  flex-shrink: 0;
}
.faq details[open] summary::after { content: "–"; color: var(--color-accent); }
.faq details p {
  padding-bottom: var(--space-lg);
  color: var(--color-ink-2);
  max-width: 56ch;
}

/* ---------- access · C2 inline form CTA ---------- */

/* ---------- how we run · phone line ---------- */
#how-we-run > .wrap > p { margin-top: var(--space-md); }
#how-we-run a[href^="tel:"] { font-family: var(--font-mono); color: var(--color-accent); text-decoration: none; white-space: nowrap; }
#how-we-run a[href^="tel:"]:hover { border-bottom: 1px solid var(--color-accent); }
.phoneline {
  margin-top: var(--space-lg);
  font-family: var(--font-mono);
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  color: var(--color-ink);
}
.phoneline a { color: var(--color-accent); text-decoration: none; border-bottom: 1px solid transparent; white-space: nowrap; }
.phoneline a:hover, .phoneline a:focus-visible { border-bottom-color: var(--color-accent); }
.phoneline span { display: block; margin-top: var(--space-2xs, 0.35rem); font-size: var(--text-sm); color: var(--color-muted); letter-spacing: 0.02em; }
@media (max-width: 40rem) { .phoneline { font-size: 1.1rem; } }

.access { padding-block: var(--space-3xl); border-top: var(--rule-hair) solid var(--color-rule-2); }
.access__grid { display: grid; gap: var(--space-xl); }
.access__lede { color: var(--color-ink-2); max-width: 46ch; margin-top: var(--space-md); }
.cta-form { display: grid; gap: var(--space-lg); max-width: 32rem; }
.cta-form .field { display: grid; gap: var(--space-2xs); }
.cta-form .field[hidden] { display: none; }
.cta-form .field-row { display: grid; gap: var(--space-lg); }
@media (min-width: 40rem) {
  .cta-form .field-row { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); }
}
.cta-form label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}
.cta-form input {
  background: none;
  border: 0;
  border-bottom: var(--rule-hair) solid var(--color-rule);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-md);
  padding: var(--space-xs) 0 var(--space-sm);
  min-height: 44px;
  border-radius: 0;
  transition: border-color var(--dur-short) var(--ease-out);
}
.cta-form input::placeholder { color: var(--color-muted); }
.cta-form input:focus-visible { outline: none; border-bottom-color: var(--color-focus); }
.cta-form input[aria-invalid="true"] { border-bottom-color: var(--color-error); }
.cta-form input[disabled] { opacity: 0.5; }
.cta-form .consent {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-sm);
  align-items: start;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  letter-spacing: normal;
  text-transform: none;
  color: var(--color-ink-2);
  cursor: pointer;
}
.cta-form .consent input[type="checkbox"] {
  width: 1.125rem;
  height: 1.125rem;
  min-height: 0;
  border: 0;
  margin-top: var(--space-3xs);
  accent-color: var(--color-accent);
  cursor: pointer;
}
.cta-form .consent a { color: var(--color-ink); }
.cta-form .consent a:hover { color: var(--color-accent); }
.cta-form .form-msg { font-size: var(--text-sm); min-height: 1.4em; }
.cta-form .form-msg[data-tone="error"] { color: var(--color-error); }
.cta-form .form-msg[data-tone="ok"] { color: var(--color-ok); }
.cta-form .btn-primary[disabled] { opacity: 0.55; cursor: default; transform: none; filter: none; }
.access__note { font-size: var(--text-xs); color: var(--color-muted); max-width: 40ch; }

@media (min-width: 60rem) {
  .access__grid { grid-template-columns: 1fr 1fr; align-items: start; }
}

/* ---------- footer · Ft5 statement ---------- */

.foot-stmt {
  padding: var(--space-3xl) var(--page-gutter) var(--space-xl);
  max-width: var(--page-max);
  margin-inline: auto;
  display: grid;
  gap: var(--space-xl);
}
.foot-stmt__line {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 5vw, 3.25rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  max-width: 16ch;
}
.foot-stmt__line .first { color: var(--color-accent); }
.foot-stmt__meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-md);
  flex-wrap: wrap;
  padding-block-start: var(--space-md);
  border-top: var(--rule-hair) solid var(--color-rule-2);
  font-size: var(--text-sm);
  color: var(--color-muted);
}
.foot-stmt__meta .wordmark { font-size: var(--text-base); }

/* ---------- scroll progress (functional indicator) ---------- */

.progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  z-index: var(--z-sticky);
  pointer-events: none;
}
.progress__bar {
  height: 100%;
  transform-origin: 0 50%;
  transform: scaleX(0);
  background: var(--color-accent);
}

/* ---------- ledger live dot ---------- */

.live {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--color-accent);
  margin-right: var(--space-2xs);
  animation: breathe 2.4s var(--ease-in-out) infinite;
}
@keyframes breathe { 0%, 100% { opacity: 0.35; } 50% { opacity: 1; } }

/* ---------- legal pages ---------- */

.legal { max-width: 65ch; padding-block: var(--space-xl) var(--space-3xl); }
.legal h1 { font-size: var(--text-2xl); margin-bottom: var(--space-xs); }
.legal__date {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--space-xl);
}
.legal h2 { font-size: var(--text-lg); margin: var(--space-xl) 0 var(--space-sm); }
.legal h3 { font-size: var(--text-md); margin: var(--space-lg) 0 var(--space-xs); }
.legal p, .legal li { color: var(--color-ink-2); }
.legal p + p { margin-top: var(--space-sm); }
.legal ul { margin: var(--space-sm) 0 var(--space-sm) 1.25rem; display: grid; gap: var(--space-2xs); }
.legal a { color: var(--color-ink); text-decoration: none; border-bottom: 1px solid var(--color-rule); }
.legal a:hover { border-color: var(--color-accent); }
.legal strong { color: var(--color-ink); font-weight: 500; }

/* ---------- footer legal base (shared with legal pages) ---------- */

.foot-stmt__links { display: flex; gap: var(--space-lg); }
.foot-stmt__links a {
  font-size: var(--text-sm);
  color: var(--color-muted);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 1px solid var(--color-rule-2);
  transition: border-color var(--dur-short) var(--ease-out);
}
.foot-stmt__links a:hover { border-color: var(--color-accent); }
.foot__base {
  padding-block-start: var(--space-md);
  border-top: var(--rule-hair) solid var(--color-rule-2);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-2xs) var(--space-xl);
  font-size: var(--text-xs);
  color: var(--color-muted);
}
.foot__base a { color: var(--color-muted); }
.foot__base a:hover { color: var(--color-ink); }

/* ---------- motion · load stagger · counters (JS) · scroll reveals · progress · hover lift ---------- */

.enter {
  opacity: 0;
  transform: translateY(8px);
  animation: enter var(--dur-long) var(--ease-out) forwards;
  animation-delay: calc(var(--i, 0) * 70ms);
}
@keyframes enter { to { opacity: 1; transform: none; } }

html.js [data-reveal] { opacity: 0; transform: translateY(8px); }
html.js [data-reveal].is-in {
  opacity: 1;
  transform: none;
  transition: opacity var(--dur-long) var(--ease-out), transform var(--dur-long) var(--ease-out);
  transition-delay: calc(var(--i, 0) * 60ms);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 150ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 150ms !important;
  }
  .enter { animation: enter-reduced 150ms linear forwards; }
  html.js [data-reveal] { opacity: 1; transform: none; }
  .live { animation: none; opacity: 1; }
  @keyframes enter-reduced { to { opacity: 1; transform: none; } }
}

/* ---------- Film grain (matte finish over the dark paper) ---------- */

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2147483000;
  background-image: url("data:image/svg+xml,%3Csvg xmlns=%27http://www.w3.org/2000/svg%27 width=%27180%27 height=%27180%27%3E%3Cfilter id=%27n%27%3E%3CfeTurbulence type=%27fractalNoise%27 baseFrequency=%270.9%27 numOctaves=%272%27 stitchTiles=%27stitch%27/%3E%3CfeColorMatrix type=%27saturate%27 values=%270%27/%3E%3C/filter%3E%3Crect width=%27100%25%27 height=%27100%25%27 filter=%27url(%23n)%27/%3E%3C/svg%3E");
  background-size: 180px 180px;
  opacity: 0.045;
}

.math__more { margin-top: var(--space-sm, 0.75rem); font-size: 0.95rem; }
.math__more a { color: var(--color-accent); text-decoration: none; border-bottom: 1px solid color-mix(in oklch, var(--color-accent) 45%, transparent); }