/* ==========================================================================
   À Bloc — Scroll Prototype
   Palette: ink / bone / signal / graphite
   ========================================================================== */

:root {
  --ink: #0B0B0C;
  --ink-2: #17171A;
  --bone: #F2EFEA;
  --bone-2: #E8E4DD;
  --graphite: #6B6862;
  --graphite-2: #9A9791;
  --signal-h: 16;
  --signal: oklch(0.58 0.16 var(--signal-h));
  --signal-soft: oklch(0.58 0.16 var(--signal-h) / 0.14);
  --line: rgba(11,11,12,0.10);
  --line-strong: rgba(11,11,12,0.22);

  --font-display: "Inter Tight", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --font-serif: "Fraunces", "Times New Roman", serif;

  --maxw: 1440px;
  --pad-x: clamp(20px, 4vw, 72px);

  --cadence-intensity: 0.65;
  --speed-intensity: 0.55;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; background: var(--bone); color: var(--ink); }
body {
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.5;
  color: var(--ink);
  background: var(--bone);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}

.mono { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; }
.muted { color: var(--graphite); }
em { font-family: var(--font-serif); font-style: italic; font-weight: 400; }

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

/* -------------------- CHROME / NAV -------------------- */

.chrome {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px var(--pad-x);
  mix-blend-mode: difference;
  color: var(--bone);
  pointer-events: none;
}
.chrome a, .chrome button { pointer-events: auto; }

.mark { display: flex; align-items: baseline; gap: 8px; }
.mark-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--signal);
  display: inline-block;
  transform: translateY(-1px);
  animation: pulse 1.6s ease-in-out infinite;
}
.mark-word { font-family: var(--font-serif); font-style: italic; font-size: 20px; letter-spacing: -0.01em; }
.mark-sub { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; opacity: 0.6; }

.nav { display: flex; align-items: center; gap: 22px; }
.nav a {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.75;
  transition: opacity 0.2s;
}
.nav a:hover { opacity: 1; }
.nav-cta {
  padding: 7px 12px;
  border: 1px solid currentColor;
  border-radius: 999px;
  opacity: 1 !important;
}

/* Hamburger button (mobile only) */
.nav-hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  background: transparent;
  border: 1px solid rgba(242,239,234,0.25);
  border-radius: 999px;
  cursor: pointer;
  padding: 0;
  color: inherit;
  margin-left: 6px;
}
.nav-hamburger-icon {
  position: relative;
  width: 16px; height: 10px;
}
.nav-hamburger-icon span {
  position: absolute;
  left: 0; right: 0;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.3s, opacity 0.3s, top 0.3s;
}
.nav-hamburger-icon span:nth-child(1) { top: 0; }
.nav-hamburger-icon span:nth-child(2) { top: 4px; }
.nav-hamburger-icon span:nth-child(3) { top: 8px; }
body.nav-open .nav-hamburger-icon span:nth-child(1) { top: 4px; transform: rotate(45deg); }
body.nav-open .nav-hamburger-icon span:nth-child(2) { opacity: 0; }
body.nav-open .nav-hamburger-icon span:nth-child(3) { top: 4px; transform: rotate(-45deg); }

@media (max-width: 780px) {
  .nav a:not(.nav-cta) { display: none; }
  .nav-hamburger { display: inline-flex; }
}

/* Mobile menu overlay */
.nav-menu {
  position: fixed;
  inset: 0;
  background: var(--ink, #0A0A0A);
  color: var(--bone, #F2EFEA);
  z-index: 90;
  display: flex;
  flex-direction: column;
  padding: 92px 28px 40px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}
body.nav-open .nav-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.nav-menu-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 20px;
  border-top: 1px solid rgba(242,239,234,0.12);
}
.nav-menu-list a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 4px;
  border-bottom: 1px solid rgba(242,239,234,0.12);
  font-family: var(--font-display, serif);
  font-size: 34px;
  line-height: 1;
  letter-spacing: -0.02em;
  font-weight: 500;
  color: var(--bone, #F2EFEA);
  text-decoration: none;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.4s, transform 0.4s;
}
body.nav-open .nav-menu-list a { opacity: 1; transform: translateY(0); }
body.nav-open .nav-menu-list a:nth-child(1) { transition-delay: 0.08s; }
body.nav-open .nav-menu-list a:nth-child(2) { transition-delay: 0.14s; }
body.nav-open .nav-menu-list a:nth-child(3) { transition-delay: 0.20s; }
body.nav-open .nav-menu-list a:nth-child(4) { transition-delay: 0.26s; }
body.nav-open .nav-menu-list a:nth-child(5) { transition-delay: 0.32s; }
body.nav-open .nav-menu-list a:nth-child(6) { transition-delay: 0.38s; }
body.nav-open .nav-menu-list a:nth-child(7) { transition-delay: 0.44s; }
.nav-menu-list a em {
  font-family: var(--font-serif, serif);
  font-style: italic;
  font-weight: 300;
  color: var(--signal, #D03D4C);
  font-size: 22px;
  letter-spacing: -0.01em;
  opacity: 0.7;
}
.nav-menu-list a .nav-menu-num {
  font-family: var(--font-mono, monospace);
  font-size: 11px;
  letter-spacing: 0.16em;
  opacity: 0.4;
  font-weight: 400;
}
.nav-menu-foot {
  margin-top: auto;
  padding-top: 32px;
  font-family: var(--font-mono, monospace);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  opacity: 0.45;
}
@media (min-width: 781px) {
  .nav-menu { display: none; }
}

@keyframes pulse {
  0%, 100% { transform: translateY(-1px) scale(1); opacity: 1; }
  50% { transform: translateY(-1px) scale(0.55); opacity: 0.5; }
}

/* -------------------- RAIL -------------------- */

.rail {
  position: fixed; top: 0; left: 0;
  width: 2px; height: 100vh; z-index: 40;
  background: rgba(11,11,12,0.08);
}
.rail-fill {
  position: absolute; top: 0; left: 0; right: 0;
  height: 0;
  background: var(--signal);
}
.rail-tick {
  position: absolute; left: 2px;
  top: calc(var(--t) * 100%);
  width: 10px; height: 1px;
  background: var(--ink);
  opacity: 0.25;
}

/* -------------------- CADENCE TICKER -------------------- */

.cadence {
  position: fixed; right: 18px; top: 50%;
  transform: translateY(-50%);
  z-index: 45;
  display: flex; flex-direction: column; align-items: flex-end; gap: 12px;
  writing-mode: vertical-rl;
  pointer-events: none;
}
.cadence-track {
  width: 2px; height: 160px;
  background: rgba(11,11,12,0.12);
  position: relative; overflow: hidden;
}
.cadence-track::before {
  content: "";
  position: absolute; left: 0; right: 0; top: 0;
  height: 30%;
  background: linear-gradient(180deg, transparent, var(--signal));
  animation: cadenceRun calc(2s / max(var(--cadence-intensity), 0.05)) linear infinite;
}
.cadence-meta {
  writing-mode: horizontal-tb;
  display: flex; flex-direction: column; align-items: flex-end; gap: 2px;
}
@keyframes cadenceRun {
  from { transform: translateY(-100%); }
  to { transform: translateY(400%); }
}
@media (max-width: 900px) { .cadence { display: none; } }

/* -------------------- HERO -------------------- */

.hero {
  position: relative;
  min-height: 100svh;
  padding: clamp(100px, 14vh, 160px) var(--pad-x) 64px;
  display: flex; flex-direction: column; justify-content: space-between;
  background: var(--ink);
  color: var(--bone);
  overflow: hidden;
}
.hero-grid {
  position: relative; z-index: 2;
  max-width: var(--maxw);
  width: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-rows: auto 1fr auto auto;
  row-gap: clamp(32px, 6vh, 64px);
  height: 100%;
  flex: 1;
}
.hero-eyebrow {
  display: flex; justify-content: space-between; align-items: center;
  color: var(--bone); opacity: 0.7;
  border-top: 1px solid rgba(242,239,234,0.18);
  padding-top: 14px;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(48px, 11.5vw, 196px);
  line-height: 0.94;
  letter-spacing: -0.035em;
  font-weight: 500;
  margin: 0;
  text-wrap: balance;
}
.hero-title .line { display: block; overflow: hidden; }
.hero-title .word {
  display: inline-block;
  transform: translateY(110%);
  will-change: transform;
}
.hero-title .word.accent {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 300;
  color: var(--signal);
}
.hero-def {
  max-width: 540px;
  color: var(--bone);
  opacity: 0.85;
  font-size: 12px;
  line-height: 1.6;
  text-transform: none;
  letter-spacing: 0.04em;
  border-left: 1px solid rgba(242,239,234,0.25);
  padding-left: 14px;
}
.hero-foot {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
  border-top: 1px solid rgba(242,239,234,0.18);
  padding-top: 18px;
}
.hero-foot-col { display: flex; flex-direction: column; gap: 4px; }
.hero-foot-val { font-size: 15px; letter-spacing: -0.01em; }
.hero-foot-val .arrow { display: inline-block; animation: arrowBob 1.6s ease-in-out infinite; color: var(--signal); }
@keyframes arrowBob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(3px); } }

.speedlines {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  z-index: 1;
  opacity: calc(0.18 + var(--speed-intensity) * 0.4);
  pointer-events: none;
}
.speedlines line {
  stroke: var(--bone);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

/* -------------------- MARQUEE -------------------- */

.marquee {
  background: var(--ink);
  color: var(--bone);
  border-top: 1px solid rgba(242,239,234,0.12);
  border-bottom: 1px solid rgba(242,239,234,0.12);
  padding: 22px 0;
  overflow: hidden;
}
.marquee-row {
  display: flex; gap: 36px;
  white-space: nowrap;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(28px, 5vw, 64px);
  font-weight: 300;
  letter-spacing: -0.02em;
  will-change: transform;
}
.marquee-row .dot { color: var(--signal); font-size: 0.4em; align-self: center; }

/* -------------------- SECTION HEAD -------------------- */

.section-head {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 120px var(--pad-x) 36px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  border-top: 1px solid var(--line);
}
.section-head h2 {
  font-size: clamp(40px, 6.5vw, 88px);
  line-height: 1;
  letter-spacing: -0.03em;
  font-weight: 500;
  margin: 0;
  text-wrap: balance;
}

/* -------------------- WHY -------------------- */

.why { background: var(--bone); }
.why-body {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad-x) 140px;
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: 64px;
  align-items: end;
}
.why-lead {
  font-size: clamp(26px, 3.4vw, 46px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  font-weight: 400;
  margin: 0;
  text-wrap: balance;
}
.why-lead span {
  display: block;
  transform: translateY(40px);
  opacity: 0;
  transition: transform 0.9s cubic-bezier(.2,.7,.2,1), opacity 0.9s ease;
}
.why-lead.in span { transform: none; opacity: 1; }
.why-lead.in span:nth-child(2) { transition-delay: 0.08s; }
.why-lead.in span:nth-child(3) { transition-delay: 0.16s; }
.why-lead.in span:nth-child(4) { transition-delay: 0.24s; color: var(--signal); }

.why-side { display: flex; flex-direction: column; gap: 14px; }
.why-side ul {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-direction: column; gap: 12px;
}
.why-side li {
  display: grid; grid-template-columns: 32px 1fr; align-items: baseline;
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
  font-size: 16px;
}
.why-side li:last-child { border-bottom: 1px solid var(--line); }

@media (max-width: 860px) {
  .why-body { grid-template-columns: 1fr; gap: 40px; padding-bottom: 80px; }
}

/* -------------------- EXPERTISE -------------------- */

.expertise { background: var(--bone); border-top: 1px solid var(--line); }
.exp-list {
  list-style: none; margin: 0;
  max-width: var(--maxw);
  padding: 0 var(--pad-x) 140px;
  margin-inline: auto;
}
.exp-row {
  display: grid;
  grid-template-columns: 64px minmax(0, 1.2fr) minmax(0, 1.5fr) auto;
  align-items: baseline;
  gap: 32px;
  padding: 32px 0;
  border-top: 1px solid var(--line);
  position: relative;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(.2,.7,.2,1);
}
.exp-row:last-child { border-bottom: 1px solid var(--line); }
.exp-row.in { opacity: 1; transform: none; }
.exp-row::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: var(--signal); transform-origin: left; transform: scaleX(0);
  transition: transform 0.9s cubic-bezier(.2,.7,.2,1);
}
.exp-row.in::before { transform: scaleX(1); transition-delay: 0.1s; }

.exp-num { color: var(--graphite); }
.exp-title {
  font-size: clamp(24px, 3vw, 40px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-weight: 500;
  margin: 0;
}
.exp-desc { margin: 0; color: var(--ink); opacity: 0.78; line-height: 1.45; max-width: 44ch; font-size: 16px; }
.exp-tag { color: var(--graphite); }

.exp-row:hover .exp-title { color: var(--signal); transition: color 0.3s; }

@media (max-width: 900px) {
  .exp-row {
    grid-template-columns: 40px 1fr;
    grid-template-areas: "num title" ". desc" ". tag";
    gap: 8px 16px;
  }
  .exp-num { grid-area: num; }
  .exp-title { grid-area: title; }
  .exp-desc { grid-area: desc; margin-top: 10px; }
  .exp-tag { grid-area: tag; margin-top: 10px; }
}

/* -------------------- DIFFERENTIATORS (horizontal pin) -------------------- */

.diff {
  position: relative;
  background: var(--ink);
  color: var(--bone);
  height: 400vh; /* scroll length drives horizontal travel */
}
.diff-track {
  position: sticky; top: 0;
  height: 100svh;
  overflow: hidden;
}
.diff-stage {
  height: 100%;
  display: flex;
  will-change: transform;
}
.diff-panel {
  flex: 0 0 100vw;
  height: 100%;
  padding: clamp(90px, 14vh, 140px) var(--pad-x) 90px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  row-gap: 32px;
  position: relative;
  border-right: 1px solid rgba(242,239,234,0.08);
}
.diff-meta {
  display: flex; justify-content: space-between; align-items: center;
  color: var(--bone); opacity: 0.7;
  max-width: var(--maxw); width: 100%; margin: 0 auto;
}
.diff-figure {
  display: flex; align-items: flex-start;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(140px, 28vw, 420px);
  line-height: 0.85;
  letter-spacing: -0.06em;
  color: var(--bone);
  max-width: var(--maxw); width: 100%; margin: auto auto 0;
  align-self: center;
  justify-self: start;
}
.diff-figure--dual { gap: 0.06em; }
.diff-figure .diff-approx { font-size: 0.35em; color: var(--signal); align-self: flex-start; margin-right: 0.04em; transform: translateY(0.25em); }
.diff-figure .diff-pct { font-size: 0.35em; color: var(--signal); align-self: flex-start; margin-left: 0.04em; transform: translateY(0.25em); }
.diff-figure .diff-arrow { color: var(--signal); font-family: var(--font-serif); font-style: italic; font-weight: 300; }
.diff-copy {
  max-width: 620px;
  font-size: clamp(16px, 1.4vw, 20px);
  line-height: 1.45;
  color: var(--bone); opacity: 0.82;
  margin: 0;
  max-width: var(--maxw); width: 100%;
  padding-right: clamp(0px, 40vw, 480px);
}
.diff-bar {
  width: 100%; max-width: var(--maxw); margin: 0 auto;
  height: 2px; background: rgba(242,239,234,0.15); position: relative;
}
.diff-bar-fill {
  position: absolute; inset: 0 auto 0 0;
  width: 0; height: 100%;
  background: var(--signal);
  transition: width 1.2s cubic-bezier(.2,.7,.2,1);
}
.diff-panel.active .diff-bar-fill { width: var(--to); }
.diff-chips { display: flex; flex-wrap: wrap; gap: 8px; max-width: var(--maxw); width: 100%; margin: 0 auto; }
.chip { padding: 8px 12px; border: 1px solid rgba(242,239,234,0.25); border-radius: 999px; color: var(--bone); opacity: 0.75; }
.diff-check {
  list-style: none; margin: 0; padding: 0;
  display: flex; gap: 28px; flex-wrap: wrap;
  max-width: var(--maxw); width: 100%; margin: 0 auto;
  color: var(--bone); opacity: 0.85;
}
.diff-check li { display: flex; gap: 10px; align-items: baseline; font-size: 15px; }
.diff-check .mono { color: var(--signal); }

/* -------- diff art (right-side kinetic supporting visuals) -------- */
.diff-art {
  position: absolute;
  right: var(--pad-x);
  top: 50%;
  transform: translateY(-50%);
  width: min(42vw, 560px);
  max-height: 62vh;
  display: flex;
  flex-direction: column;
  gap: 14px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 1s ease 0.2s;
  z-index: 1;
}
.diff-panel.active .diff-art { opacity: 1; }

/* Panel 1 — drafting speed-lines */
.diff-art--draft { gap: 10px; }
.draft-label {
  display: flex; justify-content: space-between;
  color: var(--bone); opacity: 0.55;
  font-size: 11px; letter-spacing: 0.12em;
}
.draft-lines {
  display: flex; flex-direction: column; gap: 7px;
  padding: 6px 0;
}
.draft-lines span {
  display: block;
  height: 2px;
  background: var(--bone);
  border-radius: 2px;
  transform-origin: right center;
  transform: scaleX(0);
  transition: transform 0.9s cubic-bezier(.2,.7,.2,1);
  margin-left: auto;
}
.draft-lines--lead span { opacity: 0.92; }
.draft-lines--lead span:nth-child(1) { width: 92%; transition-delay: 0.05s; }
.draft-lines--lead span:nth-child(2) { width: 98%; transition-delay: 0.10s; }
.draft-lines--lead span:nth-child(3) { width: 85%; transition-delay: 0.15s; }
.draft-lines--lead span:nth-child(4) { width: 100%; transition-delay: 0.20s; }
.draft-lines--lead span:nth-child(5) { width: 90%; transition-delay: 0.25s; }
.draft-lines--lead span:nth-child(6) { width: 95%; transition-delay: 0.30s; }
.draft-lines--lead span:nth-child(7) { width: 88%; transition-delay: 0.35s; }
.draft-lines--lead span:nth-child(8) { width: 96%; transition-delay: 0.40s; }
.draft-lines--follow span { opacity: 0.5; }
.draft-lines--follow span:nth-child(1) { width: 64%; transition-delay: 0.55s; }
.draft-lines--follow span:nth-child(2) { width: 70%; transition-delay: 0.60s; }
.draft-lines--follow span:nth-child(3) { width: 60%; transition-delay: 0.65s; }
.draft-lines--follow span:nth-child(4) { width: 72%; transition-delay: 0.70s; }
.draft-lines--follow span:nth-child(5) { width: 66%; transition-delay: 0.75s; }
.draft-lines--follow span:nth-child(6) { width: 68%; transition-delay: 0.80s; }
.draft-lines--follow span:nth-child(7) { width: 62%; transition-delay: 0.85s; }
.draft-lines--follow span:nth-child(8) { width: 70%; transition-delay: 0.90s; }
.diff-panel.active .draft-lines span { transform: scaleX(1); }

.draft-gap {
  display: flex; justify-content: space-between; align-items: center;
  border-top: 1px dashed rgba(242,239,234,0.2);
  border-bottom: 1px dashed rgba(242,239,234,0.2);
  padding: 10px 0;
  color: var(--bone);
  margin: 4px 0;
}
.draft-gap .mono { font-size: 10px; opacity: 0.6; letter-spacing: 0.18em; }
.draft-delta {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 300;
  color: var(--signal);
  letter-spacing: -0.02em;
}

/* Panel 2 — ADKAR pulse columns */
.diff-art--pulse {
  flex-direction: row;
  align-items: flex-end;
  gap: clamp(10px, 1.6vw, 22px);
  padding: 20px 0 6px;
  height: min(420px, 54vh);
}
.pulse-col {
  flex: 1;
  display: flex;
  flex-direction: column-reverse;
  align-items: center;
  gap: 10px;
  height: 100%;
}
.pulse-col .mono { opacity: 0.55; letter-spacing: 0.2em; font-size: 11px; }
.pulse-bar {
  width: 100%;
  height: 0;
  background: var(--bone);
  border-radius: 2px;
  transition: height 1s cubic-bezier(.2,.7,.2,1);
}
.pulse-col:nth-child(1) .pulse-bar { transition-delay: 0.05s; opacity: 0.6; }
.pulse-col:nth-child(2) .pulse-bar { transition-delay: 0.20s; opacity: 0.72; }
.pulse-col:nth-child(3) .pulse-bar { transition-delay: 0.35s; opacity: 0.85; }
.pulse-col:nth-child(4) .pulse-bar { transition-delay: 0.50s; background: var(--signal); }
.pulse-col:nth-child(5) .pulse-bar { transition-delay: 0.65s; background: var(--signal); }
.diff-panel.active .pulse-bar { height: var(--h); }

/* Panel 3 — transparency grid */
.diff-art--grid { gap: 20px; }
.trans-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
  width: 100%;
}
.trans-grid span {
  aspect-ratio: 1 / 1;
  background: rgba(242,239,234,0.08);
  border: 1px solid rgba(242,239,234,0.18);
  opacity: 0;
  transform: scale(0.85);
  transition: opacity 0.55s ease, transform 0.55s cubic-bezier(.2,.7,.2,1);
}
.diff-panel.active .trans-grid span { opacity: 1; transform: scale(1); }
.trans-grid span:nth-child(7),
.trans-grid span:nth-child(13),
.trans-grid span:nth-child(19) {
  background: var(--signal-soft);
  border-color: var(--signal);
}
.trans-grid span:nth-child(1)  { transition-delay: 0.02s }
.trans-grid span:nth-child(2)  { transition-delay: 0.05s }
.trans-grid span:nth-child(3)  { transition-delay: 0.08s }
.trans-grid span:nth-child(4)  { transition-delay: 0.11s }
.trans-grid span:nth-child(5)  { transition-delay: 0.14s }
.trans-grid span:nth-child(6)  { transition-delay: 0.17s }
.trans-grid span:nth-child(7)  { transition-delay: 0.20s }
.trans-grid span:nth-child(8)  { transition-delay: 0.23s }
.trans-grid span:nth-child(9)  { transition-delay: 0.26s }
.trans-grid span:nth-child(10) { transition-delay: 0.29s }
.trans-grid span:nth-child(11) { transition-delay: 0.32s }
.trans-grid span:nth-child(12) { transition-delay: 0.35s }
.trans-grid span:nth-child(13) { transition-delay: 0.38s }
.trans-grid span:nth-child(14) { transition-delay: 0.41s }
.trans-grid span:nth-child(15) { transition-delay: 0.44s }
.trans-grid span:nth-child(16) { transition-delay: 0.47s }
.trans-grid span:nth-child(17) { transition-delay: 0.50s }
.trans-grid span:nth-child(18) { transition-delay: 0.53s }
.trans-grid span:nth-child(19) { transition-delay: 0.56s }
.trans-grid span:nth-child(20) { transition-delay: 0.59s }
.trans-readout {
  display: flex; justify-content: space-between; align-items: baseline;
  padding-top: 12px;
  border-top: 1px dashed rgba(242,239,234,0.2);
  color: var(--bone);
}
.trans-readout .mono { font-size: 11px; opacity: 0.6; letter-spacing: 0.12em; }
.trans-value {
  font-family: var(--font-display);
  font-size: 36px; font-weight: 300;
  letter-spacing: -0.02em;
  color: var(--signal);
}
.trans-value .diff-pct { font-size: 0.5em; margin-left: 0.05em; transform: none; color: var(--signal); }

@media (max-width: 960px) {
  .diff-art { display: none; }
}

.diff-overlay {
  position: absolute;
  top: calc(100svh - 60px); left: var(--pad-x); right: var(--pad-x);
  pointer-events: none;
  display: flex; justify-content: space-between; align-items: center;
  color: var(--bone);
}
.diff-track { /* overlay lives inside sticky area */ }
.diff-track .diff-overlay { position: absolute; top: auto; bottom: 28px; left: var(--pad-x); right: var(--pad-x); }

/* Move overlay inside the sticky track */
.diff-overlay {
  position: absolute;
  left: var(--pad-x); right: var(--pad-x); bottom: 28px;
  top: auto;
}

.diff-overlay-head { display: flex; gap: 18px; align-items: center; color: var(--bone); opacity: 0.7; }
.diff-dots { display: flex; gap: 10px; align-items: center; }
.diff-dot {
  width: 28px; height: 2px; background: rgba(242,239,234,0.25);
  transition: background 0.3s, width 0.3s;
}
.diff-dot.active { background: var(--signal); width: 44px; }

@media (max-width: 720px) {
  .diff { height: 350vh; }
  .diff-panel { padding-top: 100px; padding-bottom: 120px; grid-template-rows: auto auto 1fr; }
  .diff-figure { font-size: clamp(96px, 36vw, 180px); align-self: flex-start; }
  .diff-copy { padding-right: 0; }
}

/* -------------------- WORK -------------------- */

.work {
  background: var(--bone);
  border-top: 1px solid var(--line);
  overflow: hidden;
}
.work .section-head { border-top: none; padding-bottom: 48px; }
.work-track {
  position: relative;
  padding: 20px 0 48px;
}
.work-row {
  display: flex;
  gap: clamp(16px, 2vw, 32px);
  padding: 0 var(--pad-x);
  will-change: transform;
}
.work-card {
  flex: 0 0 clamp(260px, 34vw, 440px);
  aspect-ratio: 4 / 5;
  background: var(--ink-2);
  color: var(--bone);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-rows: 1fr auto;
  padding: 24px;
  transition: transform 0.4s cubic-bezier(.2,.7,.2,1);
}
.work-card:hover { transform: translateY(-4px); }
.work-card .wc-visual {
  position: absolute; inset: 0;
  background:
    repeating-linear-gradient(135deg, rgba(242,239,234,0.03) 0 2px, transparent 2px 14px),
    linear-gradient(180deg, var(--ink-2), #0a0a0c);
}
.work-card .wc-glyph {
  position: absolute; right: 18px; top: 18px;
  font-family: var(--font-serif); font-style: italic; font-weight: 300;
  font-size: 56px; line-height: 1; color: var(--signal); opacity: 0.85;
}
.work-card .wc-meta {
  position: relative; z-index: 2;
  display: flex; flex-direction: column; gap: 4px;
  color: var(--graphite-2);
}
.work-card .wc-meta .mono { opacity: 0.7; }
.work-card .wc-title {
  position: relative; z-index: 2;
  font-size: clamp(18px, 1.6vw, 24px);
  line-height: 1.15;
  letter-spacing: -0.015em;
  font-weight: 500;
  color: var(--bone);
  margin: 0;
}
.work-card .wc-sector {
  position: absolute; left: 24px; top: 24px;
  color: var(--bone); opacity: 0.7;
}
.work-card[data-variant="signal"] { background: var(--signal); color: var(--ink); }
.work-card[data-variant="signal"] .wc-visual {
  background:
    repeating-linear-gradient(135deg, rgba(11,11,12,0.06) 0 2px, transparent 2px 14px),
    linear-gradient(180deg, var(--signal), oklch(0.5 0.17 var(--signal-h)));
}
.work-card[data-variant="signal"] .wc-title,
.work-card[data-variant="signal"] .wc-sector { color: var(--ink); }
.work-card[data-variant="signal"] .wc-glyph { color: var(--ink); opacity: 0.7; }
.work-card[data-variant="signal"] .wc-meta { color: rgba(11,11,12,0.6); }

.work-card[data-variant="bone"] {
  background: var(--bone-2); color: var(--ink);
  border: 1px solid var(--line);
}
.work-card[data-variant="bone"] .wc-visual {
  background:
    repeating-linear-gradient(135deg, rgba(11,11,12,0.04) 0 2px, transparent 2px 14px);
}
.work-card[data-variant="bone"] .wc-title,
.work-card[data-variant="bone"] .wc-sector { color: var(--ink); }
.work-card[data-variant="bone"] .wc-glyph { color: var(--signal); }
.work-card[data-variant="bone"] .wc-meta { color: var(--graphite); }

.work-foot {
  max-width: var(--maxw);
  margin: 24px auto 0;
  padding: 0 var(--pad-x) 120px;
  text-transform: none;
  letter-spacing: 0.02em;
  line-height: 1.6;
}

/* -------------------- FOUNDER -------------------- */

.founder { background: var(--bone); border-top: 1px solid var(--line); }
.founder-grid {
  max-width: var(--maxw); margin: 0 auto;
  padding: 0 var(--pad-x) 80px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  gap: clamp(32px, 5vw, 80px);
  align-items: start;
}
.founder-portrait { position: sticky; top: 120px; }
.portrait-placeholder {
  aspect-ratio: 4 / 5;
  background:
    repeating-linear-gradient(45deg, rgba(11,11,12,0.04) 0 2px, transparent 2px 14px),
    var(--bone-2);
  border: 1px solid var(--line);
  display: grid; place-items: center;
  color: var(--graphite);
}
.founder-body { display: flex; flex-direction: column; gap: 20px; }
.founder-name {
  font-size: clamp(36px, 5vw, 72px);
  line-height: 1;
  letter-spacing: -0.03em;
  font-weight: 500;
  margin: 0;
}
.founder-dot { color: var(--signal); }
.founder-role { letter-spacing: 0.06em; }
.founder-lead {
  font-size: clamp(22px, 2.4vw, 30px);
  line-height: 1.25;
  letter-spacing: -0.015em;
  margin: 0;
}
.founder-bio { font-size: 17px; line-height: 1.55; color: var(--ink); opacity: 0.82; margin: 0; max-width: 60ch; }

.founder-stats {
  margin: 20px 0 0; padding: 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  border-top: 1px solid var(--line);
  padding-top: 20px;
}
.founder-stats div { display: flex; flex-direction: column; gap: 2px; }
.founder-stats dt { margin: 0; }
.founder-stats dd { margin: 0; font-size: 18px; letter-spacing: -0.01em; }

.engage {
  max-width: var(--maxw); margin: 0 auto;
  padding: 48px var(--pad-x) 120px;
  list-style: none;
  display: grid; grid-template-columns: auto 1fr 1fr;
  gap: 18px 32px;
  border-top: 1px solid var(--line);
}
.engage li:first-child { grid-column: 1; padding-top: 32px; }
.engage li:not(:first-child) {
  padding-top: 32px;
  font-size: clamp(18px, 1.6vw, 22px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  opacity: 0;
  transform: translateY(24px);
  transition: all 0.7s cubic-bezier(.2,.7,.2,1);
}
.engage.in li:not(:first-child) { opacity: 1; transform: none; }
.engage.in li:nth-child(3) { transition-delay: 0.08s; }
.engage.in li:nth-child(4) { transition-delay: 0.16s; }
.engage.in li:nth-child(5) { transition-delay: 0.24s; }

@media (max-width: 900px) {
  .founder-grid { grid-template-columns: 1fr; }
  .founder-portrait { position: static; }
  .engage { grid-template-columns: 1fr; gap: 18px; }
}

/* -------------------- QUALS -------------------- */

.quals { background: var(--ink); color: var(--bone); border-top: 1px solid rgba(242,239,234,0.1); }
.quals .section-head h2 { color: var(--bone); }
.quals .section-head { border-top-color: rgba(242,239,234,0.08); }
.quals-grid {
  max-width: var(--maxw); margin: 0 auto;
  padding: 0 var(--pad-x) 60px;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1px;
  background: rgba(242,239,234,0.1);
  border: 1px solid rgba(242,239,234,0.1);
}
.qual {
  background: var(--ink);
  padding: 28px;
  display: flex; flex-direction: column; gap: 10px;
  min-height: 220px;
  opacity: 0; transform: translateY(20px);
  transition: all 0.7s cubic-bezier(.2,.7,.2,1);
}
.quals-grid.in .qual { opacity: 1; transform: none; }
.quals-grid.in .qual:nth-child(2) { transition-delay: 0.08s; }
.quals-grid.in .qual:nth-child(3) { transition-delay: 0.16s; }
.quals-grid.in .qual:nth-child(4) { transition-delay: 0.24s; }
.quals-grid.in .qual:nth-child(5) { transition-delay: 0.32s; }
.qual-tag { color: var(--signal); }
.qual-name { font-size: 20px; letter-spacing: -0.01em; font-weight: 500; }
.qual-body { margin-top: auto; color: var(--bone); opacity: 0.72; font-size: 14px; line-height: 1.5; }

.roster {
  max-width: var(--maxw); margin: 0 auto;
  padding: 0 var(--pad-x) 120px;
  display: grid; grid-template-columns: auto 1fr; gap: 32px;
  align-items: start;
  border-top: 1px solid rgba(242,239,234,0.1);
  padding-top: 40px;
}
.roster ul {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 8px 12px;
}
.roster li {
  font-family: var(--font-serif); font-style: italic; font-weight: 300;
  font-size: clamp(22px, 2.6vw, 36px);
  letter-spacing: -0.01em;
  color: var(--bone); opacity: 0.55;
  transition: opacity 0.3s, color 0.3s;
}
.roster li::after { content: "·"; color: var(--signal); margin-left: 12px; opacity: 0.6; }
.roster li:last-child::after { content: ""; }
.roster li:hover { opacity: 1; color: var(--signal); }

@media (max-width: 700px) {
  .roster { grid-template-columns: 1fr; }
}

/* -------------------- CONTACT -------------------- */

.contact {
  background: var(--ink);
  color: var(--bone);
  padding: 120px var(--pad-x) 80px;
  border-top: 1px solid rgba(242,239,234,0.1);
  position: relative;
  overflow: hidden;
}
.contact-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid; gap: 40px;
}
.contact-headline {
  font-size: clamp(64px, 14vw, 220px);
  line-height: 0.9;
  letter-spacing: -0.04em;
  font-weight: 500;
  margin: 0;
  text-wrap: balance;
}
.contact-headline em { color: var(--signal); }
.contact-sub { max-width: 520px; font-size: 18px; opacity: 0.75; margin: 0; }

.contact-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px;
  border-radius: 999px;
  font-size: 14px; letter-spacing: -0.005em; font-weight: 500;
  transition: transform 0.3s cubic-bezier(.2,.7,.2,1), background 0.3s, color 0.3s;
}
.btn-primary { background: var(--signal); color: var(--ink); }
.btn-primary:hover { transform: translateY(-2px); }
.btn-ghost { background: transparent; border: 1px solid rgba(242,239,234,0.25); color: var(--bone); }
.btn-ghost:hover { border-color: var(--bone); }

.contact-meta {
  display: flex; justify-content: space-between;
  border-top: 1px solid rgba(242,239,234,0.15);
  padding-top: 24px;
}

/* -------------------- TWEAKS PANEL -------------------- */

.tweaks {
  position: fixed; right: 20px; bottom: 20px;
  width: 280px; z-index: 60;
  background: var(--ink);
  color: var(--bone);
  border: 1px solid rgba(242,239,234,0.15);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.tweaks[hidden] { display: none; }
.tweaks-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(242,239,234,0.15);
  letter-spacing: 0.12em; text-transform: uppercase;
}
.tweaks-close {
  background: none; border: none; color: var(--bone);
  font-size: 18px; line-height: 1; cursor: pointer; padding: 0 4px;
}
.tweaks-body { padding: 14px; display: flex; flex-direction: column; gap: 14px; }
.tweak { display: grid; grid-template-columns: 1fr auto; gap: 6px 10px; align-items: center; }
.tweak-label { letter-spacing: 0.08em; text-transform: uppercase; }
.tweak input[type="range"] { grid-column: 1 / -1; width: 100%; accent-color: var(--signal); }
.tweak-val { color: var(--signal); }
.tweak-row { grid-template-columns: 1fr auto; }
.tweak-row input[type="checkbox"] { grid-column: auto; accent-color: var(--signal); }

/* -------------------- REDUCE MOTION -------------------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .hero-title .word { transform: none !important; }
}
body.reduce-motion * { animation: none !important; transition: none !important; }
body.reduce-motion .hero-title .word { transform: none !important; }
body.reduce-motion .why-lead span { transform: none !important; opacity: 1 !important; }
body.reduce-motion .exp-row { transform: none !important; opacity: 1 !important; }