:root {
  --black: #151713;
  --charcoal: #25271f;
  --paper: #f0e8dc;
  --paper-light: #fbf8f1;
  --sage: #667669;
  --olive: #3f4d43;
  --copper: #a87356;
  --rose: #7d3157;
  --moss: #24392f;
  --gold: #c99b69;
  --ink-soft: rgba(21, 23, 19, 0.68);
  --white-soft: rgba(251, 248, 241, 0.78);
  --line-dark: rgba(21, 23, 19, 0.15);
  --line-light: rgba(251, 248, 241, 0.22);
  --serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: "Avenir Next", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  color: var(--black);
  overflow-x: hidden;
  background:
    linear-gradient(rgba(240, 232, 220, 0.94), rgba(240, 232, 220, 0.94)),
    url("./assets/paper-texture.jpg");
  font-family: var(--serif);
  line-height: 1.72;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(21, 23, 19, 0.045) 1px, transparent 1px),
    linear-gradient(rgba(21, 23, 19, 0.03) 1px, transparent 1px);
  background-size: 9.09vw 100%, 100% 112px;
}

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

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

#about,
#basic,
#chapters,
#cccf,
#contact {
  scroll-margin-top: 18px;
}

#top {
  scroll-margin-top: 0;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px clamp(22px, 4.8vw, 76px);
  color: var(--paper-light);
  mix-blend-mode: normal;
  transition: opacity 260ms ease, transform 260ms ease;
}

.site-header.is-scrolled .brand,
.site-header.is-scrolled .language-toggle {
  opacity: 0;
  pointer-events: none;
  transform: translateY(-18px);
}

.brand {
  display: grid;
  gap: 2px;
  font-weight: 600;
}

.brand span {
  font-size: 15px;
  letter-spacing: 0.03em;
}

.brand small,
.site-nav,
.eyebrow,
.section-label,
.metrics span,
.chapter-index,
.external-links,
.archive figcaption,
.path-timeline span,
.dynamic-map span,
.external-links span,
address span,
.site-footer {
  font-family: var(--sans);
}

.brand small {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  opacity: 0.68;
}

.site-nav {
  display: none;
  gap: clamp(18px, 2.2vw, 34px);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.site-nav a {
  opacity: 0.78;
}

.site-nav a:hover {
  opacity: 1;
}

.site-nav a.is-active {
  color: #f1bd83;
  opacity: 1;
}

.language-toggle {
  position: fixed;
  top: 29px;
  right: calc(clamp(18px, 4.8vw, 54px) + 72px);
  z-index: 40;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(251, 248, 241, 0.72);
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1;
  text-transform: uppercase;
  transition:
    color 180ms ease,
    opacity 260ms ease,
    transform 260ms ease;
}

.language-toggle::before {
  content: none;
}

.language-toggle span {
  color: rgba(251, 248, 241, 0.42);
}

.language-toggle strong {
  color: var(--gold);
  font-weight: 700;
}

.language-toggle:hover {
  color: var(--paper-light);
}

.site-header.is-nav-hidden .language-toggle {
  opacity: 0;
  pointer-events: none;
  transform: translateY(-18px);
}

.menu-toggle {
  position: fixed;
  top: 16px;
  right: clamp(18px, 4.8vw, 54px);
  z-index: 40;
  display: grid;
  width: 54px;
  height: 54px;
  place-items: center;
  padding: 0;
  border: 1px solid rgba(251, 248, 241, 0.22);
  border-radius: 999px;
  background: rgba(21, 23, 19, 0.28);
  color: var(--paper-light);
  cursor: pointer;
  backdrop-filter: blur(14px);
  transition:
    opacity 260ms ease,
    transform 260ms ease,
    background 180ms ease,
    border-color 180ms ease;
}

.menu-toggle span {
  display: block;
  grid-area: 1 / 1;
  width: 22px;
  height: 1px;
  background: currentColor;
  transform-origin: center;
  transition:
    transform 220ms ease,
    opacity 180ms ease;
}

.menu-toggle span:nth-child(1) {
  transform: translateY(-7px);
}

.menu-toggle span:nth-child(3) {
  transform: translateY(7px);
}

.menu-toggle:hover {
  background: rgba(21, 23, 19, 0.42);
  border-color: rgba(201, 155, 105, 0.5);
}

.site-header.is-nav-hidden .menu-toggle {
  opacity: 0;
  pointer-events: none;
  transform: translateY(-18px);
}

.site-header.is-menu-open .menu-toggle {
  background: rgba(251, 248, 241, 0.92);
  color: var(--black);
}

.site-header.is-menu-open .menu-toggle span:nth-child(1) {
  transform: rotate(42deg);
}

.site-header.is-menu-open .menu-toggle span:nth-child(2) {
  opacity: 0;
}

.site-header.is-menu-open .menu-toggle span:nth-child(3) {
  transform: rotate(-42deg);
}

.nav-drawer {
  position: fixed;
  top: 82px;
  right: clamp(18px, 4.8vw, 54px);
  z-index: 35;
  width: min(260px, calc(100vw - 36px));
  padding: 10px;
  border: 1px solid rgba(251, 248, 241, 0.18);
  background: rgba(18, 29, 24, 0.86);
  box-shadow: 0 22px 58px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(18px);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-10px) scale(0.98);
  transition:
    opacity 220ms ease,
    transform 220ms ease;
}

.site-header.is-menu-open .nav-drawer {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

.nav-drawer nav {
  display: grid;
}

.nav-drawer a {
  display: flex;
  min-height: 48px;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
  color: rgba(251, 248, 241, 0.84);
  border-bottom: 1px solid rgba(251, 248, 241, 0.1);
  font-family: var(--sans);
  font-size: 14px;
  letter-spacing: 0.04em;
}

.nav-drawer a::after {
  content: "";
  width: 5px;
  height: 5px;
  border-top: 1px solid currentColor;
  border-right: 1px solid currentColor;
  opacity: 0.56;
  transform: rotate(45deg);
}

.nav-drawer a:last-child {
  border-bottom: 0;
}

.nav-drawer a:hover,
.nav-drawer a.is-active {
  color: var(--paper-light);
  background: rgba(251, 248, 241, 0.06);
}

.nav-drawer a.nav-language {
  margin-top: 8px;
  color: var(--gold);
  border-top: 1px solid rgba(251, 248, 241, 0.1);
}

.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.72fr);
  gap: clamp(20px, 3.4vw, 58px);
  align-items: end;
  padding: 104px clamp(22px, 5vw, 76px) clamp(34px, 4.8vw, 66px);
  color: var(--paper-light);
  background:
    radial-gradient(circle at 22% 20%, rgba(201, 155, 105, 0.14), transparent 32%),
    linear-gradient(135deg, var(--charcoal), var(--moss) 58%, #1a1d18);
  isolation: isolate;
}

.hero::before {
  content: "";
  order: 9;
  display: block;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto clamp(22px, 5vw, 76px) 0;
  height: 1px;
  background: var(--line-light);
  opacity: 0.7;
  z-index: -1;
}

.hero-copy {
  padding-bottom: clamp(0px, 2.2vw, 28px);
  animation: heroCopyIn 720ms ease both;
}

.eyebrow,
.section-label,
.chapter-index {
  margin: 0;
  color: var(--copper);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero h1,
.intro h2,
.chapter-copy h2,
.ethics h2,
.contact h2 {
  margin: 0;
  font-weight: 500;
  letter-spacing: 0;
}

.hero h1 {
  max-width: 650px;
  margin-top: 18px;
}

.en-page .hero-copy > p:not(.eyebrow),
.en-page .intro p,
.en-page .pathway p,
.en-page .chapter-copy p,
.en-page .project-notes p,
.en-page .contact p {
  line-height: 1.68;
}

.en-page .intro h2,
.en-page .pathway h2,
.en-page .contact h2 {
  font-size: clamp(32px, 4vw, 62px);
  line-height: 1.08;
}

.en-page .chapter-copy h2 {
  font-size: clamp(31px, 3.45vw, 54px);
}

.en-page .path-timeline strong {
  font-size: clamp(20px, 1.75vw, 28px);
}

.en-page .dynamic-map article strong {
  font-size: clamp(20px, 1.85vw, 28px);
}

.en-page .site-header {
  position: fixed;
  mix-blend-mode: normal;
}

.en-page .hero {
  padding-top: 112px;
}

.en-page .brand span {
  font-size: clamp(16px, 1.6vw, 20px);
}

.en-page .hero-copy > p:not(.eyebrow),
.en-page .hero-metrics {
  max-width: 860px;
}

.name-card {
  display: grid;
  gap: 10px;
  padding: clamp(22px, 3.4vw, 36px) 0 clamp(20px, 3vw, 32px);
  border-top: 1px solid rgba(251, 248, 241, 0.34);
  border-bottom: 1px solid rgba(251, 248, 241, 0.34);
}

.name-card__name {
  width: max-content;
  max-width: 100%;
  font-size: clamp(54px, 7vw, 96px);
  line-height: 0.98;
  white-space: nowrap;
}

.name-card__role {
  width: max-content;
  max-width: 100%;
  color: rgba(251, 248, 241, 0.9);
  font-size: clamp(28px, 3.6vw, 50px);
  line-height: 1.08;
  white-space: nowrap;
}

.name-card__meta {
  color: var(--copper);
  font-family: var(--sans);
  font-size: clamp(12px, 1.05vw, 14px);
  font-weight: 700;
  letter-spacing: 0.18em;
  line-height: 1.4;
  text-transform: uppercase;
}

.hero-copy > p:not(.eyebrow) {
  max-width: 720px;
  margin: 22px 0 0;
  color: var(--white-soft);
  font-size: clamp(16px, 1.35vw, 20px);
}

.hero-brief {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  max-width: 960px;
  margin-top: 34px;
  border-block: 1px solid var(--line-light);
}

.hero-brief p {
  margin: 0;
  padding: 14px 18px 14px 0;
  color: rgba(251, 248, 241, 0.9);
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.45;
}

.hero-brief span {
  display: block;
  margin-bottom: 6px;
  color: var(--copper);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero-brief strong {
  display: block;
  color: rgba(251, 248, 241, 0.9);
  font-size: 14px;
  font-weight: 500;
}

.hero-brief p + p {
  padding-left: 18px;
  border-left: 1px solid var(--line-light);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.hero-metrics {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 720px;
  margin-top: 18px;
  border-color: rgba(251, 248, 241, 0.2);
  background: rgba(251, 248, 241, 0.035);
}

.hero-metrics div {
  min-height: 68px;
  padding: 13px 16px;
  border-color: rgba(251, 248, 241, 0.18);
}

.hero-metrics div:nth-child(2) {
  border-right: 0;
}

.hero-metrics div:nth-child(-n + 2) {
  border-bottom: 1px solid rgba(251, 248, 241, 0.18);
}

.hero-metrics span {
  color: rgba(201, 155, 105, 0.92);
  font-size: 10px;
  letter-spacing: 0.14em;
}

.hero-metrics strong {
  margin-top: 5px;
  color: rgba(251, 248, 241, 0.9);
  font-size: clamp(16px, 1.35vw, 19px);
  line-height: 1.28;
}

.button,
.external-links a {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid var(--line-light);
  font-family: var(--sans);
  font-size: 13px;
  transition:
    background 180ms ease,
    border-color 180ms ease,
    color 180ms ease,
    transform 180ms ease;
}

.button.primary {
  color: var(--black);
  background: var(--paper-light);
}

.button.secondary {
  color: var(--paper-light);
}

.button.contact-link {
  color: var(--paper-light);
  border-color: rgba(201, 155, 105, 0.46);
  background: rgba(168, 115, 86, 0.18);
  margin-left: 0;
  opacity: 1;
}

.button:hover,
.external-links a:hover {
  transform: translateY(-2px);
}

.hero-portrait {
  position: relative;
  min-height: min(72vh, 760px);
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line-light);
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.24);
  animation: portraitIn 820ms 120ms ease both;
}

.hero-portrait::after,
.chapter-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 50%, rgba(21, 23, 19, 0.36));
}

.hero-portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  filter: saturate(0.9) contrast(1.02);
}

.hero-portrait figcaption {
  position: absolute;
  right: 24px;
  bottom: 24px;
  left: 24px;
  display: grid;
  gap: 4px;
  padding-top: 16px;
  color: var(--paper-light);
  border-top: 1px solid var(--line-light);
}

.hero-portrait figcaption span {
  color: var(--white-soft);
  font-family: var(--sans);
  font-size: 13px;
}

.hero-portrait figcaption strong {
  font-size: 22px;
  font-weight: 500;
}

.metrics-section {
  padding: clamp(42px, 5.2vw, 74px) clamp(22px, 5vw, 76px);
  border-bottom: 1px solid var(--line-dark);
  background:
    linear-gradient(90deg, rgba(251, 248, 241, 0.78), rgba(240, 232, 220, 0.5)),
    rgba(251, 248, 241, 0.66);
}

.metrics-section .section-label {
  margin-bottom: 18px;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  max-width: 1160px;
  border: 1px solid var(--line-dark);
  background: rgba(251, 248, 241, 0.66);
}

.metrics div {
  min-height: 104px;
  padding: 20px clamp(18px, 2.6vw, 38px);
  border-right: 1px solid var(--line-dark);
}

.metrics div:last-child {
  border-right: 0;
}

.metrics span,
address span {
  color: var(--copper);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.metrics strong {
  display: block;
  margin-top: 10px;
  font-size: clamp(17px, 1.35vw, 22px);
  font-weight: 500;
  line-height: 1.25;
}

.metrics.hero-metrics {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 720px;
  margin-top: 18px;
  border-color: rgba(251, 248, 241, 0.2);
  background: rgba(251, 248, 241, 0.035);
}

.metrics.hero-metrics div {
  min-height: 68px;
  padding: 13px 16px;
  border-color: rgba(251, 248, 241, 0.18);
}

.metrics.hero-metrics div:nth-child(odd) {
  border-right: 1px solid rgba(251, 248, 241, 0.18);
}

.metrics.hero-metrics div:nth-child(even) {
  border-right: 0;
}

.metrics.hero-metrics div:nth-child(-n + 2) {
  border-bottom: 1px solid rgba(251, 248, 241, 0.18);
}

.metrics.hero-metrics div:nth-child(n + 3) {
  border-bottom: 0;
}

.metrics.hero-metrics span {
  color: rgba(201, 155, 105, 0.92);
  font-size: 10px;
  letter-spacing: 0.14em;
}

.metrics.hero-metrics strong {
  margin-top: 5px;
  color: rgba(251, 248, 241, 0.9);
  font-size: clamp(16px, 1.35vw, 19px);
  line-height: 1.28;
}

.intro,
.pathway,
.ethics,
.contact {
  display: grid;
  grid-template-columns: minmax(140px, 0.28fr) minmax(0, 1fr);
  gap: clamp(28px, 7vw, 110px);
  padding: clamp(76px, 10vw, 150px) clamp(22px, 5vw, 76px);
}

.intro {
  padding-block: clamp(58px, 7vw, 96px);
}

.intro h2,
.pathway h2,
.ethics h2,
.contact h2 {
  max-width: 900px;
  font-size: clamp(34px, 4.9vw, 72px);
  line-height: 1.12;
}

.split-heading {
  display: grid;
  gap: clamp(10px, 1.2vw, 16px);
}

.split-heading > span {
  display: block;
  width: max-content;
  max-width: 100%;
  color: var(--copper);
  font-family: var(--sans);
  font-size: clamp(16px, 1.45vw, 22px);
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.2;
  white-space: nowrap;
}

.split-heading > strong {
  display: block;
  font: inherit;
  font-weight: 500;
  letter-spacing: 0;
}

.intro p,
.pathway p,
.chapter-copy p,
.project-notes p,
.ethics p,
.contact p {
  max-width: 760px;
  margin: 28px 0 0;
  color: var(--ink-soft);
  font-family: var(--sans);
  font-size: 16px;
}

.intro blockquote {
  max-width: 820px;
  margin: 42px 0 0;
  padding: 28px 0 0 clamp(22px, 4vw, 42px);
  color: var(--olive);
  border-top: 1px solid var(--line-dark);
  border-left: 3px solid var(--copper);
  font-size: clamp(22px, 2.5vw, 34px);
  line-height: 1.45;
}

.method-card {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  max-width: 900px;
  margin-top: 42px;
  border-block: 1px solid var(--line-dark);
}

.method-card p {
  max-width: none;
  margin: 0;
  padding: 22px 22px 24px 0;
  color: var(--ink-soft);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.65;
}

.method-card p + p {
  padding-left: 22px;
  border-left: 1px solid var(--line-dark);
}

.method-card span {
  display: block;
  margin-bottom: 9px;
  color: var(--rose);
  font-family: var(--serif);
  font-size: 23px;
  line-height: 1;
}

.intro-copy > p {
  max-width: 820px;
  font-size: clamp(16px, 1.35vw, 19px);
}

.dynamic-map {
  position: relative;
  display: grid;
  grid-template-columns: 0.92fr repeat(4, minmax(0, 1fr));
  max-width: 1080px;
  margin-top: 42px;
  border: 1px solid var(--line-dark);
  background:
    linear-gradient(135deg, rgba(251, 248, 241, 0.75), rgba(240, 232, 220, 0.36)),
    rgba(251, 248, 241, 0.56);
}

.dynamic-map::before {
  content: "";
  position: absolute;
  top: 50%;
  right: clamp(18px, 2.4vw, 30px);
  left: clamp(210px, 22vw, 270px);
  height: 1px;
  background: rgba(63, 77, 67, 0.28);
}

.dynamic-map__center,
.dynamic-map article {
  position: relative;
  min-height: 210px;
  padding: clamp(20px, 2.8vw, 32px);
}

.dynamic-map__center {
  display: grid;
  align-content: center;
  background: var(--olive);
  color: var(--paper-light);
}

.dynamic-map__center span {
  color: #d2a074;
}

.dynamic-map__center strong {
  display: block;
  margin-top: 16px;
  font-size: clamp(22px, 2.4vw, 34px);
  font-weight: 500;
  line-height: 1.18;
}

.dynamic-map article {
  display: grid;
  align-content: space-between;
  border-left: 1px solid var(--line-dark);
  cursor: pointer;
  outline: 0;
  transition:
    background 220ms ease,
    box-shadow 220ms ease,
    transform 220ms ease;
}

.dynamic-map article::before {
  content: "";
  width: 10px;
  height: 10px;
  margin-top: 4px;
  border: 1px solid var(--olive);
  border-radius: 999px;
  background: var(--paper-light);
  box-shadow: 0 0 0 8px rgba(102, 118, 105, 0.12);
  transition:
    background 220ms ease,
    border-color 220ms ease,
    box-shadow 220ms ease;
}

.dynamic-map span {
  color: var(--copper);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.dynamic-map article strong {
  display: block;
  color: var(--olive);
  font-size: clamp(22px, 2.2vw, 31px);
  font-weight: 500;
  line-height: 1;
}

.dynamic-map article p {
  max-width: none;
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.58;
}

.dynamic-map article:hover,
.dynamic-map article:focus-visible,
.dynamic-map article.is-active {
  z-index: 1;
  background: rgba(251, 248, 241, 0.78);
  box-shadow: 0 20px 42px rgba(21, 23, 19, 0.08);
  transform: translateY(-4px);
}

.dynamic-map article:hover::before,
.dynamic-map article:focus-visible::before,
.dynamic-map article.is-active::before {
  border-color: var(--copper);
  background: var(--copper);
  box-shadow: 0 0 0 10px rgba(168, 115, 86, 0.14);
}

.dynamic-map__note {
  max-height: 0;
  margin-top: 0 !important;
  overflow: hidden;
  opacity: 0;
  transform: translateY(6px);
  transition:
    max-height 260ms ease,
    margin-top 260ms ease,
    opacity 220ms ease,
    transform 220ms ease;
}

.dynamic-map article:hover .dynamic-map__note,
.dynamic-map article:focus-visible .dynamic-map__note,
.dynamic-map article.is-active .dynamic-map__note {
  max-height: 120px;
  margin-top: 14px !important;
  opacity: 1;
  transform: translateY(0);
}

.pathway {
  background:
    linear-gradient(90deg, rgba(251, 248, 241, 0.42), transparent 62%),
    rgba(102, 118, 105, 0.12);
  border-block: 1px solid var(--line-dark);
}

.pathway-copy > p {
  max-width: 820px;
  font-size: clamp(16px, 1.4vw, 19px);
}

.path-timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0;
  max-width: 1120px;
  margin-top: 46px;
}

.path-timeline::before {
  content: "";
  position: absolute;
  top: 42px;
  right: 0;
  left: 0;
  height: 1px;
  background: var(--line-dark);
}

.path-timeline article {
  position: relative;
  min-height: 286px;
  padding: 76px clamp(18px, 2.4vw, 30px) 26px 0;
  opacity: 0.62;
  transform: translateY(12px);
  transition:
    opacity 260ms ease,
    transform 260ms ease;
}

.path-timeline article + article {
  padding-left: clamp(18px, 2.4vw, 30px);
  border-left: 1px solid var(--line-dark);
}

.path-timeline article::before {
  content: "";
  position: absolute;
  top: 33px;
  left: 0;
  width: 18px;
  height: 18px;
  border: 1px solid var(--olive);
  border-radius: 50%;
  background: var(--paper-light);
  box-shadow: 0 0 0 10px rgba(102, 118, 105, 0.12);
  transition:
    background 240ms ease,
    border-color 240ms ease,
    box-shadow 240ms ease,
    transform 240ms ease;
}

.path-timeline article + article::before {
  left: clamp(18px, 2.4vw, 30px);
}

.path-timeline span,
.external-links span {
  display: block;
  color: var(--copper);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.path-timeline strong {
  display: block;
  margin-top: 18px;
  color: var(--olive);
  font-size: clamp(22px, 2.1vw, 32px);
  font-weight: 500;
  line-height: 1.2;
}

.path-timeline p {
  max-width: none;
  margin-top: 22px;
  font-size: 14px;
  line-height: 1.7;
}

.path-timeline article.is-active {
  opacity: 1;
  transform: translateY(0);
}

.path-timeline article.is-active::before {
  border-color: var(--copper);
  background: var(--copper);
  box-shadow: 0 0 0 12px rgba(168, 115, 86, 0.14);
  transform: scale(1.08);
}

.path-timeline article.is-active strong {
  color: var(--black);
}

.chapters {
  border-block: 1px solid var(--line-dark);
}

.chapters-head {
  padding: clamp(36px, 5vw, 64px) clamp(22px, 5vw, 76px) clamp(18px, 2.4vw, 28px);
  background: rgba(251, 248, 241, 0.72);
}

.chapter {
  position: relative;
  display: grid;
  grid-template-columns: minmax(340px, 0.86fr) minmax(0, 1fr);
  min-height: 560px;
  background: var(--paper-light);
  border-bottom: 1px solid var(--line-dark);
}

.chapter:last-child {
  border-bottom: 0;
}

.chapter.reverse {
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.86fr);
}

.chapter.reverse .chapter-media {
  order: 2;
}

.chapter-media {
  position: relative;
  min-height: 520px;
  overflow: hidden;
  background: var(--charcoal);
}

.chapter-media::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(15, 22, 18, 0.28), rgba(15, 22, 18, 0.02) 34%, rgba(15, 22, 18, 0.44)),
    linear-gradient(90deg, rgba(15, 22, 18, 0.26), transparent 46%);
}

.chapter-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.02);
  transform: scale(1.018);
  transition:
    filter 260ms ease,
    transform 700ms ease;
}

.chapter.is-visible .chapter-media img {
  transform: scale(1);
}

.chapter-media img.media-columbia {
  object-position: 50% 28%;
}

.chapter-media img.media-clinical {
  object-position: 50% 32%;
}

.chapter-media img.media-cccf {
  object-position: 74% 48%;
}

.chapter-cccf .chapter-media {
  align-self: start;
  aspect-ratio: 16 / 10;
  min-height: 0;
}

.chapter-media img.media-cccf {
  transform: none;
}

.chapter-media img.media-teaching {
  object-position: 55% 50%;
}

.chapter-copy {
  position: relative;
  z-index: 2;
  align-self: center;
  margin-left: clamp(-78px, -5vw, -42px);
  padding: clamp(34px, 5.8vw, 78px);
  border: 1px solid rgba(21, 23, 19, 0.12);
  background: rgba(251, 248, 241, 0.86);
  backdrop-filter: blur(14px);
}

.chapter.reverse .chapter-copy {
  margin-right: clamp(-78px, -5vw, -42px);
  margin-left: 0;
}

.chapter-copy h2 {
  max-width: 740px;
  margin-top: 18px;
  font-size: clamp(34px, 4.2vw, 64px);
  line-height: 1.1;
}

.chapter-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-width: 760px;
  margin-top: 30px;
}

.chapter-tags span {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  padding: 0 12px;
  color: var(--olive);
  border: 1px solid rgba(63, 77, 67, 0.22);
  background: rgba(240, 232, 220, 0.5);
  font-family: var(--sans);
  font-size: 12px;
}

.external-links {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: 34px;
}

.project-notes {
  display: grid;
  max-width: 760px;
  margin-top: 30px;
  border-top: 1px solid var(--line-dark);
}

.project-notes p {
  max-width: none;
  margin: 0;
  padding: 15px 0;
  border-bottom: 1px solid var(--line-dark);
  font-size: 15px;
}

.project-notes strong {
  display: inline-block;
  min-width: 92px;
  color: var(--rose);
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 500;
}

.external-links a {
  display: grid;
  position: relative;
  min-height: 132px;
  align-content: start;
  align-items: start;
  gap: 10px;
  justify-content: stretch;
  justify-items: start;
  padding: 18px;
  color: var(--black);
  border-color: var(--line-dark);
  background: rgba(240, 232, 220, 0.42);
}

.external-links a::after {
  content: "↗";
  position: absolute;
  top: 17px;
  right: 18px;
  color: var(--copper);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1;
  opacity: 0.72;
  transition:
    opacity 180ms ease,
    transform 180ms ease;
}

.external-links a:hover {
  background: rgba(240, 232, 220, 0.72);
}

.external-links a:hover::after {
  opacity: 1;
  transform: translate(2px, -2px);
}

.external-links strong {
  color: var(--olive);
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 500;
  line-height: 1.2;
}

.external-links small {
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.55;
}

.archive {
  padding: clamp(54px, 7vw, 96px) clamp(22px, 5vw, 76px);
  background: var(--charcoal);
  color: var(--paper-light);
}

.archive-head {
  display: grid;
  grid-template-columns: minmax(150px, 0.28fr) minmax(0, 1fr);
  gap: clamp(28px, 7vw, 110px);
  align-items: end;
}

.archive-head p {
  max-width: 820px;
  margin: 0;
  color: var(--white-soft);
  font-family: var(--sans);
  font-size: clamp(16px, 1.5vw, 21px);
}

.archive-grid {
  display: grid;
  grid-template-columns: 0.86fr 1fr 0.96fr;
  gap: 18px;
  margin-top: 32px;
  align-items: end;
}

.archive figure {
  position: relative;
  margin: 0;
}

.archive figure p {
  max-width: 92%;
  margin: 12px 0 0;
  color: rgba(251, 248, 241, 0.64);
  font-family: var(--sans);
  font-size: 13px;
  line-height: 1.6;
}

.archive img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border: 1px solid var(--line-light);
  filter: saturate(0.88) contrast(1.04);
  transition:
    filter 220ms ease,
    transform 220ms ease;
}

.archive figure:nth-child(2) img {
  aspect-ratio: 4 / 5;
  object-position: 46% 28%;
}

.archive figure:hover img {
  filter: saturate(1) contrast(1.06);
  transform: translateY(-4px);
}

.archive figcaption {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 10px;
  color: var(--white-soft);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.archive figcaption span {
  color: var(--gold);
}

.archive figcaption strong {
  font-weight: 600;
}

.ethics {
  background: var(--paper-light);
}

.ethics p + p {
  margin-top: 18px;
}

.contact {
  color: var(--paper-light);
  background:
    linear-gradient(135deg, rgba(125, 49, 87, 0.18), transparent 38%),
    var(--black);
}

.contact .eyebrow {
  color: var(--copper);
}

.contact p {
  color: var(--white-soft);
}

.contact-note {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 5px;
}

address {
  align-self: end;
  display: grid;
  margin: 0;
  font-style: normal;
  border-top: 1px solid var(--line-light);
}

address a,
address p {
  display: grid;
  gap: 6px;
  margin: 0;
  padding: 24px 0;
  border-bottom: 1px solid var(--line-light);
  font-family: var(--sans);
}

address strong {
  color: var(--paper-light);
  font-size: clamp(19px, 2vw, 28px);
  font-weight: 500;
  word-break: break-word;
}

address p {
  color: var(--white-soft);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 22px clamp(22px, 5vw, 76px);
  color: rgba(251, 248, 241, 0.66);
  background: var(--black);
  border-top: 1px solid var(--line-light);
  font-size: 12px;
}

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity 700ms ease,
    transform 700ms ease;
}

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

@keyframes heroCopyIn {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes portraitIn {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.985);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (min-width: 1061px) {
  .pathway .section-label {
    position: sticky;
    top: 112px;
    align-self: start;
  }
}

@media (max-width: 1060px) {
  .hero,
  .chapter,
  .chapter.reverse {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    order: -1;
  }

  .hero-portrait {
    min-height: 54vh;
  }

  .chapter-copy,
  .chapter.reverse .chapter-copy {
    order: 2;
    margin-right: clamp(18px, 5vw, 46px);
    margin-left: clamp(18px, 5vw, 46px);
    margin-top: -82px;
  }

  .chapter-media,
  .chapter.reverse .chapter-media {
    order: 1;
  }

  .metrics {
    grid-template-columns: repeat(2, 1fr);
  }

  .intro,
  .pathway,
  .ethics,
  .contact,
  .archive-head {
    grid-template-columns: 1fr;
  }

  .method-card {
    grid-template-columns: 1fr;
  }

  .dynamic-map {
    grid-template-columns: 1fr 1fr;
  }

  .dynamic-map::before {
    display: none;
  }

  .dynamic-map__center {
    grid-column: 1 / -1;
    min-height: 0;
  }

  .dynamic-map article {
    min-height: 180px;
  }

  .path-timeline {
    grid-template-columns: 1fr;
  }

  .path-timeline::before {
    top: 0;
    bottom: 0;
    left: 8px;
    width: 1px;
    height: auto;
  }

  .path-timeline article,
  .path-timeline article + article {
    min-height: 0;
    padding: 0 0 34px 42px;
    border-left: 0;
  }

  .path-timeline article::before,
  .path-timeline article + article::before {
    top: 2px;
    left: 0;
  }

  .method-card p {
    padding: 18px 0;
  }

  .method-card p + p {
    padding-left: 0;
    border-top: 1px solid var(--line-dark);
    border-left: 0;
  }
}

@media (max-width: 720px) {
  body::before {
    background-size: 50vw 100%, 100% 96px;
  }

  .site-header {
    position: fixed;
    align-items: flex-start;
    padding: 12px 22px 0;
    mix-blend-mode: normal;
    color: var(--paper-light);
  }

  .language-toggle {
    top: 29px;
    right: 91px;
  }

  .menu-toggle {
    top: 18px;
    right: 22px;
    width: 54px;
    height: 54px;
  }

  .brand span {
    font-size: 13px;
  }

  .site-nav {
    display: none;
  }

  .hero {
    min-height: auto;
    gap: 0;
    padding: 42px 22px 28px;
  }

  .en-page .hero {
    padding-top: 42px;
  }

  .hero-copy {
    display: contents;
    animation: none;
  }

  .hero-copy > .eyebrow {
    order: 1;
    width: calc(100vw - 44px);
    max-width: calc(100vw - 44px);
    margin-bottom: 6px;
  }

  .name-card {
    order: 3;
    align-self: end;
    width: 100vw;
    margin: 0 0 -182px;
    padding: 78px 22px 24px;
    border: 0;
    border-bottom: 1px solid var(--line-light);
    background: linear-gradient(180deg, transparent, rgba(15, 22, 18, 0.42) 22%, rgba(15, 22, 18, 0.82) 100%);
    box-shadow: none;
    backdrop-filter: none;
    transform: translate(-22px, -182px);
    z-index: 3;
  }

  .hero h1 {
    max-width: none;
    margin-top: 0;
  }

  .hero h1.name-card {
    margin: 0 0 -182px;
  }

  .name-card {
    gap: 6px;
  }

  .name-card__name {
    font-size: 46px;
  }

  .name-card__role {
    font-size: 27px;
  }

  .name-card__meta {
    margin-left: 4px;
    font-size: 13px;
    letter-spacing: 0.16em;
  }

  .hero-brief {
    order: 5;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    width: calc(100vw - 44px);
    max-width: calc(100vw - 44px);
    margin-top: 20px;
    border: 0;
  }

  .hero-brief p {
    min-height: 0;
    padding: 10px 11px;
    border: 1px solid var(--line-light);
    font-size: 12px;
    font-weight: 600;
    line-height: 1.42;
  }

  .hero-brief span {
    margin-bottom: 3px;
    font-size: 9px;
    letter-spacing: 0.14em;
  }

  .hero-brief strong {
    font-size: 12px;
  }

  .hero-brief p + p {
    padding-left: 11px;
    border: 1px solid var(--line-light);
  }

  .hero-copy > p:not(.eyebrow) {
    order: 4;
    width: calc(100vw - 44px);
    max-width: calc(100vw - 44px);
    margin-top: 15px;
    font-size: 15px;
  }

  .hero-metrics {
    order: 5;
    width: calc(100vw - 44px);
    max-width: calc(100vw - 44px);
    margin-top: 14px;
    border-color: var(--line-light);
    background: rgba(251, 248, 241, 0.04);
  }

  .hero-metrics div {
    min-height: 58px;
    padding: 10px 11px;
    border-color: var(--line-light);
  }

  .hero-metrics div:nth-child(odd) {
    border-right: 1px solid var(--line-light);
  }

  .hero-metrics div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line-light);
  }

  .hero-metrics span {
    font-size: 9px;
  }

  .hero-metrics strong {
    margin-top: 3px;
    font-size: 15px;
    line-height: 1.35;
  }

  .hero-actions {
    order: 6;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    width: calc(100vw - 44px);
    max-width: calc(100vw - 44px);
    margin-top: 14px;
  }

  .hero-actions .button {
    min-height: 42px;
    padding: 0 12px;
    font-size: 13px;
  }

  .hero-actions .contact-link {
    color: var(--paper-light);
    background: rgba(168, 115, 86, 0.18);
    margin-left: 0;
  }

  .hero-portrait {
    order: 2;
    width: 100vw;
    height: clamp(420px, 72dvh, 560px);
    min-height: 0;
    margin-left: -22px;
    margin-right: 0;
    margin-top: 0;
    border-inline: 0;
    border-bottom: 0;
    animation: none;
    transform: none;
  }

  .hero-portrait img {
    object-position: center 12%;
  }

  .hero-portrait figcaption {
    display: none;
  }

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

  .metrics-section {
    padding: 36px 22px 44px;
  }

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

  .metrics div {
    min-height: 94px;
    padding: 16px 14px;
    border-right: 0;
    border-bottom: 1px solid var(--line-dark);
  }

  .metrics div:nth-child(odd) {
    border-right: 1px solid var(--line-dark);
  }

  .metrics div:last-child {
    border-bottom: 0;
  }

  .hero-metrics div,
  .hero-metrics div:last-child {
    min-height: 58px;
    padding: 10px 11px;
    border-color: var(--line-light);
  }

  .hero-metrics div:nth-child(2) {
    border-right: 0;
  }

  .hero-metrics div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line-light);
  }

  .intro,
  .pathway,
  .ethics,
  .contact {
    padding: 58px 22px;
  }

  .pathway {
    gap: 14px;
    padding-top: 34px;
  }

  .intro {
    padding-top: 54px;
  }

  .intro h2,
  .chapter-copy h2,
  .pathway h2,
  .ethics h2,
  .contact h2 {
    font-size: 34px;
  }

  .en-page .intro h2,
  .en-page .chapter-copy h2,
  .en-page .pathway h2,
  .en-page .contact h2 {
    font-size: 30px;
    line-height: 1.12;
  }

  .en-page .name-card__role {
    font-size: 25px;
  }

  .en-page .path-timeline strong,
  .en-page .dynamic-map article strong {
    font-size: 24px;
  }

  .split-heading {
    gap: 9px;
  }

  .split-heading > span {
    font-size: 16px;
    letter-spacing: 0.06em;
  }

  .dynamic-map {
    grid-template-columns: 1fr;
    margin-top: 24px;
  }

  .dynamic-map__center,
  .dynamic-map article {
    min-height: 0;
    padding: 18px;
  }

  .dynamic-map article {
    display: grid;
    grid-template-columns: 38px minmax(0, 1fr);
    column-gap: 12px;
    align-content: start;
    border-top: 1px solid var(--line-dark);
    border-left: 0;
  }

  .dynamic-map article::before {
    grid-row: 1 / span 3;
    width: 11px;
    height: 11px;
    margin: 8px 0 0 4px;
    box-shadow: 0 0 0 8px rgba(102, 118, 105, 0.12);
  }

  .dynamic-map article span,
  .dynamic-map article strong,
  .dynamic-map article p {
    grid-column: 2;
  }

  .dynamic-map article strong {
    font-size: 25px;
  }

  .dynamic-map article p {
    margin-top: 7px;
  }

  .chapters-head {
    padding: 34px 22px 18px;
  }

  .chapter {
    min-height: 0;
    background: transparent;
  }

  .chapter-media {
    height: clamp(330px, 78vw, 410px);
    min-height: 0;
  }

  .chapter-cccf .chapter-media {
    width: 100%;
    aspect-ratio: auto;
  }

  .chapter-media img {
    transform: none;
  }

  .chapter-media img.media-columbia {
    object-position: 50% 40%;
  }

  .chapter-media img.media-clinical {
    object-position: 50% 32%;
  }

  .chapter-media img.media-cccf {
    object-position: 82% 50%;
  }

  .chapter-media img.media-teaching {
    object-position: 50% 50%;
  }

  .chapter-tags span {
    min-height: 32px;
  }

  .external-links {
    grid-template-columns: 1fr;
  }

  .chapter-copy {
    margin: -46px 14px 38px;
    padding: 30px 18px 38px;
    border-color: rgba(21, 23, 19, 0.14);
    background: linear-gradient(180deg, rgba(251, 248, 241, 0.72), rgba(251, 248, 241, 0.94) 24%, rgba(251, 248, 241, 0.94));
  }

  .chapter.reverse .chapter-copy {
    margin: -46px 14px 38px;
  }

  .path-timeline {
    margin-top: 30px;
  }

  .path-timeline article {
    opacity: 1;
    transform: none;
  }

  .archive {
    padding-inline: 22px;
  }

  .site-footer {
    display: grid;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
  }
}