/* Hallmark · macrostructure: Narrative Workflow · tone: austere, clinical-calm · anchor hue: grey-blue 232 + vessel red 25
 * genre: modern-minimal · theme: studied-DNA · studied: yes · DNA-source: image (user video reference, frames only)
 * hero: H2 split diptych inside a rounded sky card · F4 steps: numbering=01/02/03, layout=text-left demo-right, connector=hairline
 * nav: N1b-lite in hero card · footer: Ft5 statement + clipped wordmark · enrichment: Tier C generated still (own style prompt)
 */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; overflow-x: clip; }
body {
  margin: 0;
  overflow-x: clip;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: var(--tracking-display);
  line-height: var(--leading-tight);
  margin: 0;
  overflow-wrap: anywhere;
  min-width: 0;
  text-wrap: balance;
}
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 3px; border-radius: var(--radius-sm); }
/* On the dark hero and the dark reach card the red ring disappears, so it turns white there. */
.hero :focus-visible { outline-color: var(--color-on-sky); }
.reach-hero :focus-visible { outline-color: var(--color-paper); }

.skip {
  position: absolute; left: var(--space-sm); top: -4rem; z-index: 10;
  background: var(--color-ink); color: var(--color-paper);
  padding: var(--space-2xs) var(--space-sm); border-radius: var(--radius-pill);
  text-decoration: none;
}
.skip:focus { top: var(--space-sm); }

/* ---------- Buttons and links ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 2.75rem; padding: 0 var(--space-md);
  border-radius: var(--radius-pill);
  font-family: var(--font-body); font-weight: 500; font-size: var(--text-sm);
  text-decoration: none; white-space: nowrap;
  border: 1px solid transparent;
  transition: transform var(--dur-fast) var(--ease-out), background-color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}
.btn:active { transform: translateY(1px); }
.btn--small { min-height: 2.25rem; padding: 0 var(--space-sm); }
.btn--light { background: var(--color-surface-raised); color: var(--color-ink); }
.btn--light:hover { background: var(--color-surface); }
.btn--ghost { background: var(--color-glass-on-sky); color: var(--color-on-sky); border-color: var(--color-chip-line-on-sky); }
.btn--ghost:hover { background: var(--color-glass-on-sky-hover); }

.link {
  display: inline-flex; gap: var(--space-3xs); align-items: baseline; white-space: nowrap;
  font-weight: 500; font-size: var(--text-sm); color: var(--color-ink);
  text-decoration: underline; text-decoration-color: var(--color-line-strong);
  text-underline-offset: 0.3em; text-decoration-thickness: 1px;
  transition: text-decoration-color var(--dur-fast) var(--ease-out);
}
.link:hover { text-decoration-color: var(--color-ink); }

/* ---------- Hero card ---------- */
.hero {
  position: relative;
  margin: var(--space-2xs);
  border-radius: var(--radius-lg);
  overflow: hidden;
  color: var(--color-on-sky);
  background: linear-gradient(180deg, var(--color-sky-top) 0%, var(--color-sky-mid) 46%, var(--color-sky-image-top) 72%);
  isolation: isolate;
}
.nav {
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-md);
  max-width: var(--measure-page); margin: 0 auto;
  padding: var(--space-sm) var(--gutter);
}
.nav__brand {
  font-family: var(--font-display); font-weight: 700; font-size: var(--text-md);
  letter-spacing: var(--tracking-tight); text-decoration: none; white-space: nowrap;
}
.nav__links { display: flex; gap: var(--space-3xs); }
.nav__links a {
  display: inline-block; padding: var(--space-3xs) var(--space-xs);
  border-radius: var(--radius-pill);
  font-size: var(--text-sm); text-decoration: none; color: var(--color-on-sky-soft);
  transition: background-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.nav__links a:hover { background: var(--color-chip-on-sky); color: var(--color-on-sky); }

.hero__intro {
  display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: var(--space-xl);
  max-width: var(--measure-wide); margin: 0 auto;
  padding: var(--space-lg) var(--gutter) var(--space-2xl);
  align-items: end;
}
.hero__name { font-family: var(--font-display); font-weight: 700; font-size: var(--text-xl); line-height: var(--leading-tight); letter-spacing: var(--tracking-tight); }
/* A small round photo under the name, with the role beside it. */
.hero__byline { display: flex; align-items: center; gap: var(--space-sm); margin: var(--space-xs) 0 var(--space-md); }
.hero__avatar {
  flex: none; width: 6rem; height: 6rem; padding: 3px;
  border: 1px solid var(--color-chip-line-on-sky); border-radius: 50%;
  object-fit: cover;
}
.hero__role { font-size: var(--text-sm); color: var(--color-on-sky-soft); }
.hero__role span { display: block; }
.hero__role span:first-child { font-weight: 600; color: var(--color-on-sky); }
.hero__lede { color: var(--color-on-sky-soft); font-size: var(--text-base); max-width: 50ch; margin: 0 0 var(--space-md); }
.chips { display: flex; flex-wrap: wrap; gap: var(--space-2xs); }
.chip {
  display: inline-flex; align-items: center; min-height: 1.75rem;
  padding: 0 var(--space-xs); border-radius: var(--radius-pill);
  font-size: var(--text-xs); font-weight: 500;
  background: var(--color-glass-on-sky); color: var(--color-on-sky);
}
.chip--outline { background: transparent; border: 1px solid var(--color-chip-line-on-sky); }
.hero h1 { font-size: var(--text-hero); }
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--space-2xs); margin-top: var(--space-md); }
.hero h1 { max-width: 16ch; }

.hero__figure { margin: calc(var(--space-lg) * -1) 0 0; position: relative; z-index: -1; }
.hero__pause {
  position: absolute; right: var(--space-sm); bottom: var(--space-sm);
  min-height: 2rem; padding: 0 var(--space-xs); border-radius: var(--radius-pill);
  font: 500 var(--text-xs) / 1 var(--font-body); cursor: pointer;
  background: var(--color-glass-on-sky); color: var(--color-on-sky); border: 1px solid var(--color-chip-line-on-sky);
}
.hero__pause:hover { background: var(--color-glass-on-sky-hover); }

/* ---------- Sections ---------- */
.section {
  max-width: var(--measure-page); margin: 0 auto;
  padding: var(--space-3xl) var(--gutter) 0;
}
.section--wide { max-width: var(--measure-wide); }
.section--wide .section__head { max-width: calc(var(--measure-page) - 2 * var(--gutter)); margin: 0 auto; }
.section h2 { font-size: var(--text-xl); max-width: 18ch; }
.section__lede { color: var(--color-muted); margin-top: var(--space-xs); max-width: 52ch; }

/* Audience cards */
.cards {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-xs);
  margin-top: var(--space-lg);
}
.card {
  background: var(--color-surface); border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-sm) var(--space-md);
}
.card h3 {
  display: flex; align-items: center; gap: var(--space-2xs);
  font-family: var(--font-body); font-weight: 600; letter-spacing: 0; font-size: var(--text-sm);
  margin-bottom: var(--space-2xs);
}
.card p { font-size: var(--text-sm); color: var(--color-ink-soft); }
.icon {
  flex: none; width: 1.75rem; height: 1.75rem; padding: var(--space-3xs);
  border-radius: 50%; background: var(--color-surface-raised); box-shadow: var(--shadow-soft);
  fill: none; stroke: var(--color-ink); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round;
}

/* Method steps */
.steps { margin-top: var(--space-lg); border-top: 1px solid var(--color-line); }
.step {
  display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: var(--space-lg);
  padding: var(--space-lg) 0; border-bottom: 1px solid var(--color-line);
  align-items: center;
}
.step__num { font-size: var(--text-xs); color: var(--color-muted); font-variant-numeric: tabular-nums; margin-bottom: var(--space-2xs); }
.step h3 { font-family: var(--font-body); font-weight: 600; letter-spacing: 0; font-size: var(--text-md); margin-bottom: var(--space-2xs); }
.step__text > p:not(.step__num) { font-size: var(--text-sm); color: var(--color-ink-soft); margin-bottom: var(--space-sm); }
.step__demo {
  background: var(--color-surface); border-radius: var(--radius-lg);
  min-height: 18rem; display: grid; place-items: center; padding: var(--space-lg) var(--space-md);
}

.demo-card {
  width: min(100%, 16.5rem);
  background: var(--color-surface-raised); border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft); padding: var(--space-sm);
  font-size: var(--text-xs);
}
.demo-card__head { display: flex; justify-content: space-between; gap: var(--space-2xs); font-weight: 600; margin-bottom: var(--space-xs); }
.demo-card__meta { font-weight: 400; color: var(--color-muted); }

.demo-poll__q { color: var(--color-ink-soft); margin-bottom: var(--space-xs); }
@keyframes pick {
  0%, 22% { background: var(--color-surface-raised); color: var(--color-ink); border-color: var(--color-line); }
  30%, 88% { background: var(--color-ink); color: var(--color-paper); border-color: var(--color-ink); }
  100% { background: var(--color-surface-raised); color: var(--color-ink); border-color: var(--color-line); }
}

/* Step 01: the poll fills when the step comes into view, then names the next module */
.poll { display: grid; gap: var(--space-2xs); }
.poll__row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 0.2rem var(--space-2xs); padding: 0.35rem var(--space-2xs); border-radius: var(--radius-sm); transition: background-color var(--dur-base) var(--ease-out) 1.6s; }
.poll__label { color: var(--color-ink-soft); }
.poll__pct { font-weight: 600; font-variant-numeric: tabular-nums; opacity: 0; transition: opacity var(--dur-base) var(--ease-out); transition-delay: calc(0.5s + var(--d) * 0.25s); }
.poll__track { grid-column: 1 / -1; height: 0.375rem; border-radius: var(--radius-pill); background: var(--color-line); overflow: hidden; }
.poll__fill { display: block; height: 100%; width: 0; border-radius: inherit; background: var(--color-muted); transition: width 0.9s var(--ease-out); transition-delay: calc(0.2s + var(--d) * 0.25s); }
.poll__row--top .poll__fill { background: var(--color-ink); }
.step.is-in .poll__fill { width: calc(var(--v) * 1%); }
.step.is-in .poll__pct { opacity: 1; }
.step.is-in .poll__row--top { background: var(--color-surface); }
.poll__foot { display: flex; flex-direction: column; gap: 0.15rem; margin-top: var(--space-xs); color: var(--color-muted); }
.poll__next { color: var(--color-ink); font-weight: 600; opacity: 0; transform: translateY(4px); transition: opacity var(--dur-base) var(--ease-out) 1.9s, transform var(--dur-base) var(--ease-out) 1.9s; }
.step.is-in .poll__next { opacity: 1; transform: none; }

/* Step 03: six stages on a ring; the active stage moves around it and the loop starts again */
.demo-loop { width: min(100%, 17.5rem); }
.loop { position: relative; aspect-ratio: 1; container-type: inline-size; }
.loop__ring { position: absolute; inset: 12%; width: 76%; height: 76%; transform: rotate(-90deg); }
.loop__ring circle { fill: none; stroke-width: 3; }
.loop__track { stroke: var(--color-line); }
.loop__progress { stroke: var(--color-ink); stroke-linecap: round; stroke-dasharray: 490; stroke-dashoffset: 408; transition: stroke-dashoffset 0.6s var(--ease-out); }
.loop__nodes { position: absolute; inset: 0; }
.loop__nodes li {
  position: absolute; left: 50%; top: 50%;
  transform: translate(-50%, -50%) rotate(calc(var(--i) * 60deg)) translateY(-31cqw) rotate(calc(var(--i) * -60deg));
  padding: 0.15rem 0.45rem; border-radius: var(--radius-pill);
  background: var(--color-surface-raised); border: 1px solid var(--color-line);
  font-size: 0.6875rem; white-space: nowrap; color: var(--color-ink-soft);
  transition: background-color var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
}
.loop__nodes li.is-active { background: var(--color-ink); border-color: var(--color-ink); color: var(--color-paper); font-weight: 600; }
.loop__desc { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); width: 52%; text-align: center; color: var(--color-ink); font-weight: 500; line-height: 1.35; }

/* Step 04: before and after bars, then a row of dots for practice change */
.measure__label { color: var(--color-muted); margin: var(--space-2xs) 0 0.3rem; }
.measure__pair { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 0.3rem var(--space-2xs); align-items: center; }
.measure__tag { color: var(--color-ink-soft); }
.measure__track { height: 0.5rem; border-radius: var(--radius-pill); background: var(--color-line); overflow: hidden; }
.measure__fill { display: block; height: 100%; width: 0; border-radius: inherit; background: var(--color-ink); transition: width 1s var(--ease-out) 0.6s; }
.measure__fill--before { background: var(--color-muted); transition-delay: 0.2s; }
.step.is-in .measure__fill { width: calc(var(--v) * 1%); }
.measure__val { font-weight: 600; font-variant-numeric: tabular-nums; }
.measure__dots { display: flex; align-items: center; gap: 0.3rem; }
.measure__dots span { width: 0.7rem; height: 0.7rem; border-radius: 50%; background: var(--color-line); transition: background-color var(--dur-base) var(--ease-out); }
.step.is-in .measure__dots span:not(.is-off) { background: var(--color-ink); }
.measure__dots span:nth-child(1) { transition-delay: 1.2s; } .measure__dots span:nth-child(2) { transition-delay: 1.3s; }
.measure__dots span:nth-child(3) { transition-delay: 1.4s; } .measure__dots span:nth-child(4) { transition-delay: 1.5s; }
.measure__dots span:nth-child(5) { transition-delay: 1.6s; } .measure__dots span:nth-child(6) { transition-delay: 1.7s; }
.measure__dots span:nth-child(7) { transition-delay: 1.8s; }
.measure__dots em { font-style: normal; font-weight: 600; margin-left: var(--space-3xs); }
.measure__foot { margin-top: var(--space-xs); color: var(--color-muted); }

/* Work */
.work {
  display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: var(--space-sm);
  margin-top: var(--space-lg);
}
.work__item {
  grid-column: span 2;
  display: flex; flex-direction: column; gap: var(--space-sm);
  background: var(--color-surface); border-radius: var(--radius-lg);
  padding: var(--space-sm) var(--space-sm) var(--space-md);
}
.work__item--feature { grid-column: span 6; display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); align-items: center; gap: var(--space-xl); padding: var(--space-md); }
.work__item--posts { grid-column: span 6; display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); align-items: center; gap: var(--space-lg); padding: var(--space-md); }
.work__text h3 { font-family: var(--font-body); font-weight: 600; letter-spacing: 0; font-size: var(--text-md); margin-bottom: var(--space-2xs); }
.work__text p { font-size: var(--text-sm); color: var(--color-ink-soft); }
.work__text .link { margin-top: var(--space-xs); }
.work__item--feature .work__text h3 { font-family: var(--font-display); font-weight: 700; letter-spacing: var(--tracking-display); font-size: var(--text-lg); }
.work__hint { margin-top: var(--space-xs); color: var(--color-muted) !important; font-size: var(--text-xs) !important; }
.work__shot { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; border-radius: var(--radius-md); background: var(--color-surface-raised); }
.work__shot--tall { object-position: 50% 22%; }

.compare {
  position: relative; aspect-ratio: 3 / 4; width: 100%; max-width: 24rem; justify-self: center;
  border-radius: var(--radius-md); overflow: hidden; background: var(--color-surface-raised);
  box-shadow: var(--shadow-soft); --pos: 50%;
  touch-action: pan-y;
}
.compare__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.compare__img--contain { object-fit: contain; background: var(--color-surface-raised); }
.compare__before { position: absolute; inset: 0; clip-path: inset(0 calc(100% - var(--pos)) 0 0); }
.compare__label {
  position: absolute; top: var(--space-xs); z-index: 2;
  padding: 0.15rem var(--space-2xs); border-radius: var(--radius-pill);
  background: var(--color-surface-raised); color: var(--color-ink);
  font-size: var(--text-xs); font-weight: 600; box-shadow: var(--shadow-soft);
}
.compare__label--left { left: var(--space-xs); }
.compare__label--right { right: var(--space-xs); }
.compare::after {
  content: ""; position: absolute; top: 0; bottom: 0; left: var(--pos); width: 2px; margin-left: -1px;
  background: var(--color-surface-raised); z-index: 1; pointer-events: none;
}
.compare__knob {
  position: absolute; top: 50%; left: var(--pos); z-index: 2;
  width: 2.5rem; height: 2.5rem; margin: -1.25rem 0 0 -1.25rem;
  display: grid; place-items: center; border-radius: 50%;
  background: var(--color-surface-raised); box-shadow: var(--shadow-knob); pointer-events: none;
}
.compare__knob svg { width: 1.1rem; height: 1.1rem; fill: none; stroke: var(--color-ink); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.compare__range {
  position: absolute; inset: 0; z-index: 3; width: 100%; height: 100%; margin: 0;
  opacity: 0; cursor: ew-resize; -webkit-appearance: none; appearance: none; background: transparent;
}
.compare:has(.compare__range:focus-visible) { outline: 2px solid var(--color-focus); outline-offset: 3px; }

.posts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-xs); margin: 0; }
.posts figure { margin: 0; }
.posts img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; border-radius: var(--radius-md); background: var(--color-surface-raised); }
.posts figcaption { margin-top: var(--space-2xs); font-size: var(--text-xs); color: var(--color-muted); }
.posts figcaption strong { color: var(--color-ink); font-weight: 600; }

.covers { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-2xs); }
.covers img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; border-radius: var(--radius-sm); box-shadow: var(--shadow-soft); }

/* Teaching table */
.talks { width: 100%; border-collapse: collapse; margin-top: var(--space-lg); font-size: var(--text-sm); }
.talks th { text-align: left; font-weight: 500; font-size: var(--text-xs); color: var(--color-muted); padding: 0 var(--space-xs) var(--space-2xs) 0; border-bottom: 1px solid var(--color-line-strong); }
.talks td { padding: var(--space-xs) var(--space-xs) var(--space-xs) 0; border-bottom: 1px solid var(--color-line); vertical-align: top; color: var(--color-ink-soft); }
.talks td:first-child { font-variant-numeric: tabular-nums; color: var(--color-ink); font-weight: 500; white-space: nowrap; }
.talks td:nth-child(2) { color: var(--color-ink); }

/* About */
.about { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: var(--space-lg); margin-top: var(--space-lg); align-items: start; }
.about__photo { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: var(--radius-lg); background: var(--color-surface); }
.about__text p { color: var(--color-ink-soft); font-size: var(--text-sm); }
.about__text p + p { margin-top: var(--space-sm); }
.links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-xs); margin-top: var(--space-lg); }
.link-card {
  display: flex; flex-direction: column; gap: var(--space-3xs); height: 100%;
  padding: var(--space-sm); border-radius: var(--radius-md); background: var(--color-surface);
  text-decoration: none; transition: background-color var(--dur-fast) var(--ease-out);
}
.link-card:hover { background: var(--color-line); }
.link-card__title { display: flex; justify-content: space-between; font-weight: 600; font-size: var(--text-sm); }
.link-card__text { font-size: var(--text-xs); color: var(--color-muted); }

.stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: var(--space-md); margin: var(--space-xl) 0 0; }
.stats > div { display: flex; flex-direction: column-reverse; justify-content: flex-end; gap: var(--space-3xs); padding: 0 var(--space-sm); border-left: 1px solid var(--color-line); }
.stats > div:nth-child(odd) { padding-left: 0; border-left: 0; }
.stats dt { font-size: var(--text-xs); color: var(--color-muted); }
.stats dd { margin: 0; font-family: var(--font-display); font-weight: 700; letter-spacing: var(--tracking-display); font-size: var(--text-xl); line-height: 1; font-variant-numeric: tabular-nums; }

/* FAQ */
.faq { margin-top: var(--space-lg); border: 1px solid var(--color-line); border-radius: var(--radius-md); overflow: hidden; }
.faq details + details { border-top: 1px solid var(--color-line); }
.faq summary {
  display: flex; justify-content: space-between; align-items: center; gap: var(--space-sm);
  padding: var(--space-sm); cursor: pointer; list-style: none;
  font-weight: 500; font-size: var(--text-sm);
  transition: background-color var(--dur-fast) var(--ease-out);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; flex: none; width: 0.75rem; height: 0.75rem;
  background:
    linear-gradient(var(--color-ink), var(--color-ink)) center / 100% 1.5px no-repeat,
    linear-gradient(var(--color-ink), var(--color-ink)) center / 1.5px 100% no-repeat;
  transition: transform var(--dur-base) var(--ease-out);
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq summary:hover { background: var(--color-surface); }
.faq summary:focus-visible { outline-offset: -2px; border-radius: 0; }
.faq details p { padding: 0 var(--space-sm) var(--space-sm); color: var(--color-ink-soft); font-size: var(--text-sm); max-width: 60ch; }

/* Footer */
.footer { margin-top: var(--space-3xl); overflow: hidden; }
.footer__inner {
  max-width: var(--measure-page); margin: 0 auto; padding: var(--space-lg) var(--gutter) 0;
  border-top: 1px solid var(--color-line);
}
.footer__statement { font-family: var(--font-display); font-weight: 700; letter-spacing: var(--tracking-display); font-size: var(--text-lg); line-height: var(--leading-snug); max-width: 26ch; }
.footer__meta { display: flex; flex-wrap: wrap; gap: var(--space-2xs) var(--space-md); margin-top: var(--space-md); font-size: var(--text-xs); color: var(--color-muted); }
.footer__meta a { color: var(--color-ink); text-decoration: none; }
.footer__meta a:hover { text-decoration: underline; text-underline-offset: 0.25em; }
.footer__wordmark {
  margin: var(--space-xl) 0 0; padding: 0 var(--space-sm) var(--space-lg);
  text-align: center; font-family: var(--font-display); font-weight: 700;
  font-size: var(--text-wordmark); letter-spacing: -0.045em; line-height: 1.05;
  white-space: nowrap; color: var(--color-line); user-select: none;
  -webkit-text-stroke: 1px var(--color-line-strong);
}

/* ---------- Responsive ---------- */
@media (max-width: 760px) {
  /* Phones: the section links wrap to their own row and scroll sideways if they do not fit. */
  .nav { flex-wrap: wrap; gap: var(--space-2xs); }
  .nav__links {
    order: 3; width: calc(100% + 2 * var(--gutter)); overflow-x: auto; scrollbar-width: none;
    margin: 0 calc(var(--gutter) * -1); padding: 0 var(--gutter);
  }
  .nav__links a { padding: var(--space-3xs) var(--space-2xs); white-space: nowrap; }
  .hero__intro { grid-template-columns: minmax(0, 1fr); gap: var(--space-md); padding: var(--space-md) var(--gutter) var(--space-lg); }
  .hero__avatar { width: 5rem; height: 5rem; }
  /* Keep the paragraph on the darker sky so white text stays readable above the film. */
  .hero { background: linear-gradient(180deg, var(--color-sky-top) 0%, var(--color-sky-mid) calc(100% - 75vw), var(--color-sky-image-top) calc(100% - 52vw)); }
  .hero__lede { color: var(--color-on-sky); }
  .hero__figure { margin-top: 0; }
  .cards { grid-template-columns: minmax(0, 1fr); }
  .step { grid-template-columns: minmax(0, 1fr); gap: var(--space-md); }
  .step__demo { min-height: 14rem; }
  .work { grid-template-columns: minmax(0, 1fr); }
  .work__item, .work__item--feature, .work__item--posts { grid-column: auto; grid-template-columns: minmax(0, 1fr); gap: var(--space-md); }
  .about { grid-template-columns: minmax(0, 1fr); }
  .about__photo { max-width: 12rem; }
  .links { grid-template-columns: minmax(0, 1fr); }
  .talks thead { display: none; }
  .talks, .talks tbody, .talks tr, .talks td { display: block; }
  .talks tr { padding: var(--space-xs) 0; border-bottom: 1px solid var(--color-line); }
  .talks td { border: 0; padding: 0; }
  .talks td:nth-child(3), .talks td:nth-child(4) { display: inline; font-size: var(--text-xs); color: var(--color-muted); }
  .talks td:nth-child(3)::after { content: " · "; }
}
@media (min-width: 761px) and (max-width: 1040px) {
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .work { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .work__item { grid-column: span 1; }
  .work__item--feature, .work__item--posts { grid-column: span 2; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 1ms !important; animation-iteration-count: 1 !important; transition-duration: 120ms !important; }
  .poll__fill, .measure__fill { transition: none; width: calc(var(--v) * 1%); }
  .poll__pct, .poll__next { opacity: 1; transform: none; }
  .measure__dots span:not(.is-off) { background: var(--color-ink); }
}

/* Work: anatomy video feature and half-width items */
.work__item--flip .work__video { order: 2; }
.work__video { margin: 0; border-radius: var(--radius-md); overflow: hidden; background: var(--color-surface-raised); box-shadow: var(--shadow-soft); }
.work__video video { display: block; width: 100%; height: auto; aspect-ratio: 16 / 10; object-fit: cover; }
.work__credit { margin-top: var(--space-sm); font-size: var(--text-xs) !important; color: var(--color-muted) !important; }
.work__item--half { grid-column: span 3; }
.work__text .link + .link { margin-left: var(--space-sm); }
@media (max-width: 760px) {
  .work__item--flip .work__video { order: 0; }
  .work__item--half { grid-column: auto; }
}
@media (min-width: 761px) and (max-width: 1040px) {
  .work__item--half { grid-column: span 1; }
}
.work__shot--top { object-position: 0% 0%; }

/* Looping demos and recordings pause while the reader points at them (WCAG 2.2.2). */
.step__demo:hover *, .step__demo:focus-within * { animation-play-state: paused; }
.work__video { position: relative; cursor: pointer; }

/* ---------- Second pass: scroll reveal, hero scroll, reach, filters ---------- */
/* Reveal: elements fade and rise into view, and fade back when they leave (JS toggles .is-in). */
.js [data-reveal] {
  opacity: 0; transform: translateY(var(--space-md));
  transition: opacity var(--dur-reveal) var(--ease-out), transform var(--dur-reveal) var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}
.js [data-reveal].is-in { opacity: 1; transform: none; }

/* Hero: the image drifts, grows a little and fades as the page scrolls away (JS sets --hero-p from 0 to 1). */
.hero__figure video {
  transform: translateY(calc(var(--hero-p, 0) * var(--space-2xl))) scale(calc(1 + var(--hero-p, 0) * 0.06));
  opacity: calc(1 - var(--hero-p, 0) * 0.55);
  transform-origin: 50% 70%;
  will-change: transform, opacity;
}
.hero__figure video {
  display: block; width: 100%; height: auto; aspect-ratio: 2400 / 1100; object-fit: cover; object-position: 50% 78%;
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, var(--color-ink) 34%);
  mask-image: linear-gradient(to bottom, transparent 0%, var(--color-ink) 34%);
}
.hero__figure--full video {
  object-position: 50% 50%;
  /* Labelled films need their full height: fade only a thin top strip. */
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, var(--color-ink) 12%);
  mask-image: linear-gradient(to bottom, transparent 0%, var(--color-ink) 12%);
}
@media (max-width: 760px) {
  /* Phones: show the whole frame so no label is cut. */
  .hero__figure--full video { aspect-ratio: 1600 / 890; }
}
.hero__intro { transform: translateY(calc(var(--hero-p, 0) * var(--space-lg) * -1)); opacity: calc(1 - var(--hero-p, 0) * 0.35); }

.btn--outline { background: transparent; color: var(--color-ink); border-color: var(--color-line-strong); }
.btn--outline:hover { background: var(--color-surface); border-color: var(--color-ink); }

.talks-summary { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin: var(--space-lg) 0 0; }
.talks-summary > div { display: flex; flex-direction: column-reverse; gap: var(--space-3xs); padding: 0 var(--space-sm); border-left: 1px solid var(--color-line); }
.talks-summary > div:first-child { padding-left: 0; border-left: 0; }
.talks-summary dt { font-size: var(--text-xs); color: var(--color-muted); }
.talks-summary dd { margin: 0; font-family: var(--font-display); font-weight: 700; letter-spacing: var(--tracking-display); font-size: var(--text-lg); font-variant-numeric: tabular-nums; }

.filters { display: flex; flex-wrap: wrap; gap: var(--space-2xs); margin-top: var(--space-lg); }
.filter {
  display: inline-flex; align-items: center; gap: var(--space-3xs); min-height: 2.25rem; padding: 0 var(--space-sm);
  border: 1px solid var(--color-line-strong); border-radius: var(--radius-pill);
  background: var(--color-surface-raised); color: var(--color-ink-soft);
  font: inherit; font-size: var(--text-sm); font-weight: 500; white-space: nowrap; cursor: pointer;
  transition: background-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}
.filter:hover { border-color: var(--color-ink); color: var(--color-ink); }
.filter:active { transform: translateY(1px); }
.filter.is-active { background: var(--color-ink); border-color: var(--color-ink); color: var(--color-paper); }
.filter__n { font-size: var(--text-xs); opacity: 0.7; font-variant-numeric: tabular-nums; }
.talks tbody tr { animation: row-in var(--dur-base) var(--ease-out) both; }
@keyframes row-in { from { opacity: 0; } to { opacity: 1; } }
.talks-more { margin-top: var(--space-md); }

.reach { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-xs); margin-top: var(--space-lg); }
.reach__item {
  display: flex; flex-direction: column; justify-content: space-between; gap: var(--space-sm);
  min-height: 7.5rem; padding: var(--space-sm); border-radius: var(--radius-md); background: var(--color-surface);
}
.reach__item--mail { grid-column: span 2; }
.reach__num { font-family: var(--font-display); font-weight: 700; letter-spacing: var(--tracking-display); font-size: var(--text-lg); line-height: 1; font-variant-numeric: tabular-nums; }
.reach__label { font-size: var(--text-xs); color: var(--color-muted); }

@media (max-width: 760px) {
  .reach { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .talks-summary dd { font-size: var(--text-md); }
}
@media (prefers-reduced-motion: reduce) {
  .js [data-reveal] { opacity: 1; transform: none; transition: none; }
  .hero__figure video, .hero__intro { transform: none; opacity: 1; }
  .talks tbody tr { animation: none; }
}

/* Reach: total + bar chart (single series, one hue, bars grow when the block comes into view) */
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.reach-hero {
  display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: var(--space-xl); align-items: end;
  margin-top: var(--space-lg); padding: var(--space-lg); border-radius: var(--radius-lg);
  background: var(--color-ink); color: var(--color-paper);
}
.reach-hero__total { display: flex; flex-direction: column; gap: var(--space-2xs); }
.reach-hero__num { font-family: var(--font-display); font-weight: 700; letter-spacing: var(--tracking-display); font-size: var(--text-hero); line-height: 1; font-variant-numeric: tabular-nums; }
.reach-hero__label { font-size: var(--text-sm); color: var(--color-chart-text); }
.reach-hero__note { font-size: var(--text-xs); color: var(--color-chart-muted); }
.reach-chart { margin: 0; }
.reach-chart__cap { font-size: var(--text-xs); color: var(--color-chart-muted); margin-bottom: var(--space-xs); }
.bars { display: grid; gap: var(--space-2xs); }
.bar {
  display: grid; grid-template-columns: 1rem minmax(0, 9.5rem) minmax(0, 1fr) 3.25rem; align-items: center; gap: var(--space-xs);
  font-size: var(--text-xs); color: var(--color-chart-text); border-radius: var(--radius-sm); outline-offset: 2px;
}
.bar__icon { width: 1rem; height: 1rem; fill: currentColor; color: var(--color-chart-text); }
.bar__label { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bar__track { height: 0.625rem; }
.bar__fill {
  display: block; height: 100%; width: calc(var(--v) * 100%);
  border-radius: 0 var(--radius-xs) var(--radius-xs) 0; background: var(--color-chart-bar);
  transform: scaleX(0); transform-origin: left;
  transition: transform 1100ms var(--ease-out), background-color var(--dur-fast) var(--ease-out);
  transition-delay: calc(var(--i) * 60ms);
}
.reach-hero.is-in .bar__fill { transform: scaleX(1); }
.bar__value { text-align: right; font-variant-numeric: tabular-nums; color: var(--color-chart-muted); }
.bar:hover .bar__fill, .bar:focus-visible .bar__fill { background: var(--color-chart-bar-hover); }
.bar:hover .bar__value, .bar:focus-visible .bar__value { color: var(--color-paper); }

.reach__icon { width: 1.25rem; height: 1.25rem; fill: currentColor; color: var(--color-ink); }
.reach__item--mail .reach__icon { fill: none; }
.reach { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.reach__item--mail { grid-column: span 2; }

@media (max-width: 760px) {
  .reach-hero { grid-template-columns: minmax(0, 1fr); gap: var(--space-lg); padding: var(--space-md); }
  .bar { grid-template-columns: 1rem minmax(0, 6.5rem) minmax(0, 1fr) 2.75rem; }
}
@media (prefers-reduced-motion: reduce) {
  .bar__fill { transform: none; transition: none; }
}

/* Step 02 demo: a programme plan card */
.demo-plan__row {
  display: flex; justify-content: space-between; align-items: center; gap: var(--space-2xs);
  padding: var(--space-2xs); margin-top: var(--space-3xs); border-radius: var(--radius-sm);
  border: 1px solid var(--color-line);
}
.demo-plan__row--focus { animation: pick 4.8s var(--ease-in-out) infinite; }
.demo-tag { padding: 0.125rem var(--space-2xs); border-radius: var(--radius-pill); background: var(--color-surface); color: var(--color-ink-soft); white-space: nowrap; }
.demo-plan__row--focus .demo-tag { background: var(--color-glass-on-sky); color: var(--color-paper); }
.demo-plan__foot { margin-top: var(--space-xs); color: var(--color-muted); }
@media (prefers-reduced-motion: reduce) { .demo-plan__row--focus { animation: none; background: var(--color-ink); color: var(--color-paper); } }

@media (max-width: 760px) {
  .reach { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .reach__item--mail { grid-column: span 2; }
}

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

/* Work: full-width teaching film */
.work__item--film { grid-column: span 6; display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-md); padding: var(--space-md); }
.work__video--film video { aspect-ratio: 1600 / 890; }
.work__text--film { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr) minmax(0, 1.2fr); gap: var(--space-lg); align-items: start; }
.work__text--film h3 { font-family: var(--font-display); font-weight: 700; letter-spacing: var(--tracking-display); font-size: var(--text-lg); }
@media (max-width: 760px) {
  .work__item--film { grid-column: auto; }
  .work__text--film { grid-template-columns: minmax(0, 1fr); gap: var(--space-xs); }
}
@media (min-width: 761px) and (max-width: 1040px) {
  .work__item--film { grid-column: span 2; }
}

/* Career: one row per organisation, years on the left */
.roles { margin-top: var(--space-lg); border-top: 1px solid var(--color-line); }
.role {
  display: grid; grid-template-columns: minmax(0, 0.32fr) minmax(0, 1fr); gap: var(--space-lg);
  padding: var(--space-md) 0; border-bottom: 1px solid var(--color-line);
}
.role__years { font-size: var(--text-sm); color: var(--color-muted); font-variant-numeric: tabular-nums; padding-top: 0.15rem; }
.role h3 { font-family: var(--font-body); font-weight: 600; letter-spacing: 0; font-size: var(--text-md); margin-bottom: var(--space-2xs); display: flex; flex-wrap: wrap; gap: var(--space-3xs) var(--space-2xs); align-items: baseline; }
.role__title { font-weight: 400; font-size: var(--text-sm); color: var(--color-muted); }
.role__body p { font-size: var(--text-sm); color: var(--color-ink-soft); max-width: 56ch; }

/* Tested before taught: a short dated list on a quiet surface */
.tested { margin-top: var(--space-lg); padding: var(--space-md); background: var(--color-surface); border-radius: var(--radius-lg); }
.tested h3 { font-family: var(--font-body); font-weight: 600; letter-spacing: 0; font-size: var(--text-md); margin-bottom: var(--space-sm); }
.tested__list { display: grid; gap: var(--space-2xs); }
.tested__list li { display: grid; grid-template-columns: 3.5rem minmax(0, 1fr); gap: var(--space-xs); font-size: var(--text-sm); color: var(--color-ink-soft); }
.tested__year { color: var(--color-ink); font-weight: 600; font-variant-numeric: tabular-nums; }

/* Publications */
.pubs { margin-top: var(--space-lg); border-top: 1px solid var(--color-line); }
.pub { padding: var(--space-sm) 0; border-bottom: 1px solid var(--color-line); }
.pub__meta { font-size: var(--text-xs); color: var(--color-muted); margin-bottom: var(--space-3xs); }
.pub__title { font-weight: 600; font-size: var(--text-sm); color: var(--color-ink); max-width: 62ch; }
.pub__authors { font-size: var(--text-sm); color: var(--color-ink-soft); margin-top: var(--space-3xs); }
.pub__authors .link { margin-left: var(--space-2xs); }

@media (max-width: 760px) {
  .role { grid-template-columns: minmax(0, 1fr); gap: var(--space-3xs); }
  .tested { padding: var(--space-sm); }
  .tested__list li { grid-template-columns: 2.75rem minmax(0, 1fr); }
}

.pub__note { font-size: var(--text-sm); color: var(--color-muted); margin-top: var(--space-3xs); }
.pub__sic { font-weight: 400; color: var(--color-muted); }
#publications .section__lede .link { font-size: inherit; }

/* Print and Save as PDF: show every section, drop motion and the videos' poster crop. */
@media print {
  .js [data-reveal] { opacity: 1 !important; transform: none !important; }
  .hero__figure video, .hero__intro { transform: none !important; opacity: 1 !important; }
  .nav__links, .skip, .filters, .talks-more, .hero__actions { display: none !important; }
  .talks tbody tr { animation: none !important; }
  /* Printers drop dark backgrounds, so the hero and the reach card print as dark text on paper. */
  .hero, .reach-hero { background: none !important; color: var(--color-ink) !important; border: 1px solid var(--color-line-strong); }
  .hero__lede, .hero__role, .hero__role span, .chip, .reach-hero__label, .reach-hero__note, .bar__label, .bar__value { color: var(--color-ink) !important; }
  .chip { background: none !important; border: 1px solid var(--color-line-strong); }
  .bar__fill { transform: none !important; background: var(--color-ink) !important; }
  .hero__figure, .work__video, .step__demo, .footer__wordmark { display: none !important; }
  .card, .step, .work__item, .role, .pub, .tested, .faq details, .talks tr { break-inside: avoid; }
}

/* Career: organisation logos under the years */
.role__meta { display: flex; flex-direction: column; align-items: flex-start; gap: var(--space-2xs); }
.role__logo { display: block; width: auto; height: 1.25rem; max-width: 100%; }
.role__logo--periospot { height: 2rem; }
.role__logo--for { height: 1.6rem; }
.role__logo--phibo { height: 1.6rem; }
.role__logo--straumann { height: 1rem; }

/* Work: images that must not be cropped */
.work__shot--wide { aspect-ratio: 1200 / 630; object-fit: contain; background: var(--color-surface); }
.work__shot--square { aspect-ratio: 1; }
.work__meta { margin-top: var(--space-2xs); font-size: var(--text-xs) !important; color: var(--color-muted) !important; }

/* Benchmark chart: one series, bars grow and the values count up when it comes into view */
.bench { margin: 0; padding: var(--space-sm); background: var(--color-surface); border-radius: var(--radius-md); }
.bench__cap { font-size: var(--text-xs); color: var(--color-muted); margin-bottom: var(--space-sm); }
.bench__bars { display: grid; gap: var(--space-2xs); }
.bench__row { display: grid; grid-template-columns: minmax(0, 8.5rem) minmax(0, 1fr) 3.25rem; gap: var(--space-2xs); align-items: center; font-size: var(--text-xs); }
.bench__model { display: flex; align-items: center; gap: 0.4rem; color: var(--color-ink-soft); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bench__model img { width: 1rem; height: 1rem; border-radius: var(--radius-xs); flex: none; }
.bench__track { height: 0.625rem; border-radius: var(--radius-pill); background: var(--color-line); overflow: hidden; }
.bench__fill { display: block; height: 100%; width: 0; border-radius: inherit; background: var(--color-muted); transition: width 1.1s var(--ease-out); transition-delay: calc(0.15s + var(--d) * 0.12s); }
.bench__row--top .bench__fill { background: var(--color-ink); }
.bench__row--top .bench__model, .bench__row--top .bench__val { color: var(--color-ink); font-weight: 600; }
.is-in .bench__fill { width: calc(var(--v) * 1%); }
.bench__val { text-align: right; font-variant-numeric: tabular-nums; color: var(--color-ink-soft); }
.bench__note { margin-top: var(--space-sm); font-size: var(--text-xs) !important; color: var(--color-muted) !important; }
@media (max-width: 420px) { .bench__row { grid-template-columns: minmax(0, 6.5rem) minmax(0, 1fr) 3rem; } }
@media (prefers-reduced-motion: reduce) { .bench__fill { transition: none; width: calc(var(--v) * 1%); } }