:root {
  --chapter-ink: #171616;
  --chapter-ink-soft: #242522;
  --chapter-ivory: #f5f0e7;
  --chapter-paper: #fffdf8;
  --chapter-coral: #ff5d61;
  --chapter-blue: #315c9a;
  --chapter-gold: #a88950;
  --chapter-muted: #756f66;
  --chapter-line: rgba(23, 22, 22, 0.22);
  --chapter-max: 1320px;
  --chapter-gutter: clamp(22px, 5vw, 74px);
  --chapter-serif: "Iowan Old Style", Baskerville, "Noto Serif TC", "Songti TC", "Times New Roman", serif;
  --chapter-sans: "Avenir Next", Inter, "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

html[data-lang="zh"] .en,
html[data-lang="en"] .zh {
  display: none !important;
}

body {
  margin: 0;
  background: var(--chapter-ivory);
  color: var(--chapter-ink);
  font-family: var(--chapter-sans);
  font-size: 17px;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
}

body::selection {
  background: var(--chapter-coral);
  color: var(--chapter-ink);
}

button,
summary {
  font: inherit;
}

a {
  color: inherit;
}

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

h1,
h2,
h3,
p {
  margin-top: 0;
}

h2,
h3,
.hero-thesis,
.investment-price {
  text-wrap: balance;
}

section[id] {
  scroll-margin-top: 82px;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--chapter-coral);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 200;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  background: var(--chapter-paper);
  color: var(--chapter-ink);
  transform: translateY(-180%);
}

.skip-link:focus {
  transform: translateY(0);
}

.chapter-header {
  position: sticky;
  z-index: 50;
  top: 0;
  display: grid;
  min-height: 74px;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 34px;
  padding: 12px var(--chapter-gutter);
  background: rgba(23, 22, 22, 0.97);
  color: var(--chapter-ivory);
  border-bottom: 1px solid rgba(245, 240, 231, 0.2);
  backdrop-filter: blur(14px);
}

.chapter-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.chapter-brand img {
  width: 30px;
  height: auto;
}

.chapter-brand span {
  display: grid;
  line-height: 1;
}

.chapter-brand strong {
  font-size: 18px;
  letter-spacing: 0.24em;
}

.chapter-brand small {
  margin-top: 6px;
  color: rgba(245, 240, 231, 0.68);
  font-size: 8px;
  font-weight: 750;
  letter-spacing: 0.2em;
}

.chapter-nav {
  display: flex;
  justify-content: center;
  gap: clamp(18px, 2.8vw, 44px);
}

.chapter-nav a {
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-decoration: none;
  text-transform: uppercase;
}

.chapter-nav a:hover {
  color: var(--chapter-coral);
}

.chapter-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.language-toggle {
  width: 38px;
  height: 38px;
  padding: 0;
  background: transparent;
  color: var(--chapter-ivory);
  border: 1px solid rgba(245, 240, 231, 0.38);
  border-radius: 50%;
  cursor: pointer;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.header-enquire {
  padding-bottom: 3px;
  border-bottom: 1px solid var(--chapter-coral);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.09em;
  text-decoration: none;
  text-transform: uppercase;
}

.chapter-hero {
  position: relative;
  isolation: isolate;
  display: grid;
  min-height: calc(100svh - 74px);
  grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
  gap: clamp(44px, 7vw, 120px);
  overflow: hidden;
  padding: clamp(58px, 8vw, 112px) var(--chapter-gutter) clamp(54px, 7vw, 92px);
  background:
    radial-gradient(circle at 76% 40%, rgba(49, 92, 154, 0.14), transparent 31%),
    radial-gradient(circle at 88% 78%, rgba(255, 93, 97, 0.08), transparent 23%),
    var(--chapter-ink);
  color: var(--chapter-ivory);
}

.chapter-hero::before,
.chapter-hero::after {
  position: absolute;
  z-index: -1;
  content: "";
  pointer-events: none;
}

.chapter-hero::before {
  inset: 18px;
  border: 1px solid rgba(168, 137, 80, 0.72);
}

.chapter-hero::after {
  top: 0;
  right: 0;
  width: min(58vw, 900px);
  height: 100%;
  opacity: 0.26;
  background-image:
    linear-gradient(32deg, transparent 47%, rgba(245, 240, 231, 0.12) 48%, transparent 49%),
    linear-gradient(90deg, transparent 47%, rgba(245, 240, 231, 0.08) 48%, transparent 49%),
    linear-gradient(0deg, transparent 47%, rgba(245, 240, 231, 0.07) 48%, transparent 49%);
  background-size: 82px 64px, 68px 68px, 68px 68px;
  mask-image: linear-gradient(90deg, transparent, #000 32%);
}

.hero-grid {
  position: absolute;
  z-index: -1;
  top: 15%;
  right: 9%;
  width: min(42vw, 620px);
  aspect-ratio: 1;
  border: 1px solid rgba(49, 92, 154, 0.45);
  border-radius: 50%;
}

.hero-grid::before,
.hero-grid::after {
  position: absolute;
  content: "";
}

.hero-grid::before {
  inset: 16%;
  border: 1px solid rgba(255, 93, 97, 0.42);
  border-radius: 50%;
}

.hero-grid::after {
  top: 50%;
  left: -14%;
  width: 128%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--chapter-blue), var(--chapter-coral), transparent);
  transform: rotate(-28deg);
  transform-origin: center;
}

.hero-copy {
  position: relative;
  z-index: 1;
  align-self: center;
  max-width: 960px;
}

.collection-line,
.hero-place,
.section-index,
.experience-label,
.investment-label,
.founding-label,
.fit-label,
.final-kicker {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.collection-line {
  display: flex;
  max-width: 630px;
  align-items: center;
  gap: 18px;
  margin-bottom: clamp(34px, 5vw, 72px);
  color: rgba(245, 240, 231, 0.9);
}

.collection-line::after {
  height: 1px;
  flex: 1;
  background: var(--chapter-gold);
  content: "";
}

.collection-line span {
  order: 2;
  color: var(--chapter-gold);
  font-family: var(--chapter-serif);
  font-weight: 500;
  letter-spacing: 0.09em;
}

.chapter-number {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 4px;
  font-size: clamp(18px, 2vw, 28px);
  font-weight: 700;
  letter-spacing: 0.18em;
}

.chapter-number strong {
  color: var(--chapter-coral);
  font-size: 1.08em;
}

.hero-place {
  margin-bottom: 4px;
  color: var(--chapter-blue);
}

.hero-place span {
  color: var(--chapter-gold);
}

.chapter-hero h1 {
  margin: 0 0 8px -0.04em;
  font-family: var(--chapter-serif);
  font-size: clamp(92px, 14vw, 238px);
  font-weight: 400;
  letter-spacing: -0.065em;
  line-height: 0.88;
}

.hero-thesis {
  margin: 34px 0 24px;
  font-family: var(--chapter-serif);
  font-size: clamp(33px, 4.6vw, 68px);
  letter-spacing: -0.035em;
  line-height: 1.03;
}

html[data-lang="zh"] .hero-thesis {
  font-family: "Noto Serif TC", "Songti TC", var(--chapter-serif);
  font-weight: 600;
  line-height: 1.18;
}

.hero-intro {
  max-width: 720px;
  margin-bottom: 32px;
  color: rgba(245, 240, 231, 0.75);
  font-size: clamp(17px, 1.55vw, 22px);
}

.hero-cta-row {
  display: flex;
  align-items: center;
  gap: 24px;
}

.hero-cta-row p {
  margin: 0;
  color: rgba(245, 240, 231, 0.58);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.chapter-button {
  display: inline-flex;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 14px 22px;
  border: 1px solid currentColor;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1.25;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
}

.chapter-button:hover {
  transform: translateY(-2px);
}

.chapter-button-light {
  background: var(--chapter-ivory);
  color: var(--chapter-ink);
}

.chapter-button-coral {
  background: var(--chapter-coral);
  color: var(--chapter-ink);
}

.hero-folio {
  position: relative;
  z-index: 2;
  align-self: end;
  padding: 18px;
  border: 1px solid rgba(168, 137, 80, 0.55);
}

.folio-mark {
  position: relative;
  isolation: isolate;
  display: grid;
  min-height: 320px;
  align-content: space-between;
  overflow: hidden;
  padding: 26px;
  background: rgba(245, 240, 231, 0.045);
  border: 1px solid rgba(245, 240, 231, 0.17);
}

.folio-map-art {
  position: absolute;
  z-index: -2;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: 100% center;
  opacity: 0.72;
  filter: saturate(0.82) contrast(1.08) brightness(0.66);
  transform: scale(1.35);
}

.folio-mark::after {
  position: absolute;
  z-index: -1;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(23, 22, 22, 0.52), rgba(23, 22, 22, 0.08) 48%, rgba(23, 22, 22, 0.62)),
    linear-gradient(90deg, rgba(23, 22, 22, 0.42), transparent 60%);
  content: "";
}

.folio-mark span,
.folio-mark small {
  color: rgba(245, 240, 231, 0.68);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.folio-mark strong {
  justify-self: center;
  color: var(--chapter-coral);
  font-family: var(--chapter-serif);
  font-size: 180px;
  font-weight: 400;
  line-height: 0.78;
}

.folio-mark small {
  justify-self: end;
  color: var(--chapter-blue);
}

.hero-folio dl {
  margin: 14px 0 0;
}

.hero-folio dl div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 2px;
  border-top: 1px solid rgba(245, 240, 231, 0.16);
}

.hero-folio dt,
.hero-folio dd {
  margin: 0;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-folio dt {
  color: rgba(245, 240, 231, 0.55);
}

.hero-folio dd {
  font-weight: 800;
}

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

.manifesto,
.experience,
.fit-section,
.faq {
  padding-block: clamp(88px, 11vw, 160px);
}

.section-index {
  margin-bottom: clamp(32px, 5vw, 70px);
  color: var(--chapter-coral);
}

.section-index-light {
  color: var(--chapter-gold);
}

.manifesto-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.32fr) minmax(260px, 0.68fr);
  gap: clamp(50px, 9vw, 140px);
  align-items: end;
}

.manifesto h2,
.private-principle h2,
.section-heading-row h2,
.journey-heading h2,
.fit-heading h2,
.invitation h2,
.faq h2,
.final-cta h2 {
  margin: 0;
  font-family: var(--chapter-serif);
  font-size: clamp(46px, 6.2vw, 88px);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 1.03;
}

html[data-lang="zh"] .manifesto h2,
html[data-lang="zh"] .private-principle h2,
html[data-lang="zh"] .section-heading-row h2,
html[data-lang="zh"] .journey-heading h2,
html[data-lang="zh"] .fit-heading h2,
html[data-lang="zh"] .invitation h2,
html[data-lang="zh"] .faq h2,
html[data-lang="zh"] .final-cta h2 {
  font-family: "Noto Serif TC", "Songti TC", var(--chapter-serif);
  font-weight: 600;
  line-height: 1.18;
}

.manifesto h2 em {
  display: block;
  margin-top: 0.28em;
  color: var(--chapter-blue);
  font-style: normal;
}

.manifesto-copy {
  max-width: 470px;
  color: var(--chapter-muted);
}

.manifesto-copy p:last-child {
  margin-bottom: 0;
}

.not-this-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: clamp(70px, 9vw, 120px);
  border-top: 1px solid var(--chapter-line);
  border-bottom: 1px solid var(--chapter-line);
}

.not-this-grid article {
  min-height: 330px;
  padding: 34px clamp(22px, 3vw, 42px) 38px;
  border-right: 1px solid var(--chapter-line);
}

.not-this-grid article:last-child {
  border-right: 0;
}

.not-index {
  display: inline-block;
  margin-bottom: 72px;
  color: var(--chapter-coral);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.not-this-grid h3,
.experience-grid h3,
.journey-list h3 {
  margin-bottom: 14px;
  font-family: var(--chapter-serif);
  font-size: clamp(26px, 2.8vw, 40px);
  font-weight: 500;
  line-height: 1.06;
}

html[data-lang="zh"] .not-this-grid h3,
html[data-lang="zh"] .journey-list h3 {
  font-family: "Noto Serif TC", "Songti TC", var(--chapter-serif);
  font-weight: 650;
}

.not-this-grid p {
  margin-bottom: 0;
  color: var(--chapter-muted);
  font-size: 15px;
}

.private-principle {
  padding-block: clamp(90px, 12vw, 170px);
  background:
    linear-gradient(135deg, rgba(49, 92, 154, 0.14), transparent 34%),
    var(--chapter-ink-soft);
  color: var(--chapter-ivory);
}

.private-grid {
  display: grid;
  grid-template-columns: minmax(320px, 0.85fr) minmax(400px, 1.15fr);
  gap: clamp(54px, 10vw, 150px);
}

.private-copy {
  padding-top: 66px;
}

.private-lede {
  margin-bottom: 48px;
  color: rgba(245, 240, 231, 0.82);
  font-size: clamp(18px, 2vw, 25px);
  line-height: 1.55;
}

.quiet-list {
  padding: 0;
  margin: 0;
  list-style: none;
}

.quiet-list li {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 22px;
  padding: 24px 0;
  border-top: 1px solid rgba(245, 240, 231, 0.18);
}

.quiet-list strong {
  color: var(--chapter-coral);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.quiet-list li > span {
  color: rgba(245, 240, 231, 0.65);
  font-size: 15px;
}

.section-heading-row {
  display: grid;
  grid-template-columns: 1fr minmax(280px, 0.5fr);
  gap: clamp(54px, 9vw, 130px);
  align-items: end;
}

.section-heading-row > p,
.journey-heading > p {
  margin-bottom: 0;
  color: var(--chapter-muted);
  font-size: 18px;
}

.experience-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin-top: clamp(64px, 9vw, 120px);
  border-top: 1px solid var(--chapter-line);
  border-left: 1px solid var(--chapter-line);
}

.experience-grid article {
  position: relative;
  min-height: 420px;
  padding: clamp(30px, 4vw, 54px);
  border-right: 1px solid var(--chapter-line);
  border-bottom: 1px solid var(--chapter-line);
}

.experience-number {
  position: absolute;
  top: 24px;
  right: 28px;
  color: rgba(23, 22, 22, 0.14);
  font-family: var(--chapter-serif);
  font-size: 96px;
  line-height: 1;
}

.experience-label {
  margin-bottom: 72px;
  color: var(--chapter-coral);
}

.experience-grid h3 {
  font-size: clamp(46px, 6vw, 82px);
}

.experience-grid p:last-child {
  max-width: 520px;
  margin-bottom: 0;
  color: var(--chapter-muted);
}

.summer-note {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: clamp(24px, 5vw, 80px);
  margin-top: 38px;
  padding: clamp(28px, 4vw, 46px);
  background: var(--chapter-blue);
  color: white;
}

.note-label {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.summer-note p {
  max-width: 880px;
  margin: 0;
  font-family: var(--chapter-serif);
  font-size: clamp(19px, 2.1vw, 27px);
  line-height: 1.5;
}

html[data-lang="zh"] .summer-note p {
  font-family: "Noto Serif TC", "Songti TC", var(--chapter-serif);
}

.journey {
  padding-block: clamp(92px, 12vw, 170px);
  background: var(--chapter-ink);
  color: var(--chapter-ivory);
}

.journey-heading {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: clamp(54px, 9vw, 130px);
  align-items: end;
}

.journey-heading > p {
  color: rgba(245, 240, 231, 0.6);
}

.decision-arc {
  margin-top: clamp(62px, 8vw, 104px);
  padding: 26px 0 28px;
  border-top: 1px solid rgba(245, 240, 231, 0.22);
  border-bottom: 1px solid rgba(245, 240, 231, 0.22);
}

.decision-arc-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.decision-arc-head > p {
  margin: 0;
  color: var(--chapter-gold);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.decision-arc-legend {
  display: flex;
  align-items: center;
  gap: 22px;
  color: rgba(245, 240, 231, 0.58);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.decision-arc-legend span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.decision-arc-legend span::before {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  content: "";
}

.decision-arc-legend .legend-core::before {
  background: var(--chapter-ivory);
}

.decision-arc-legend .legend-open::before {
  background: transparent;
  border: 1px dashed var(--chapter-coral);
}

.decision-arc-track {
  overflow-x: auto;
  padding: 30px 0 8px;
  scrollbar-color: rgba(245, 240, 231, 0.22) transparent;
  scrollbar-width: thin;
}

.decision-arc ol {
  position: relative;
  display: grid;
  min-width: 760px;
  grid-template-columns: repeat(7, minmax(92px, 1fr));
  padding: 0;
  margin: 0;
  list-style: none;
}

.decision-arc ol::before {
  position: absolute;
  top: 23px;
  right: 7%;
  left: 7%;
  height: 1px;
  background: linear-gradient(90deg, var(--chapter-gold), var(--chapter-blue) 38%, rgba(245, 240, 231, 0.3) 69%, var(--chapter-coral));
  content: "";
}

.decision-arc li {
  position: relative;
  z-index: 1;
  display: grid;
  justify-items: center;
  gap: 12px;
}

.arc-node {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  background: var(--chapter-ivory);
  color: var(--chapter-ink);
  border: 1px solid var(--chapter-ivory);
  border-radius: 50%;
  box-shadow: 0 0 0 7px var(--chapter-ink);
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.06em;
}

.arc-university .arc-node {
  background: var(--chapter-blue);
  color: white;
  border-color: #4f75aa;
}

.arc-life .arc-node {
  background: var(--chapter-gold);
  color: var(--chapter-ink);
  border-color: var(--chapter-gold);
}

.arc-open .arc-node {
  background: var(--chapter-ink);
  color: var(--chapter-coral);
  border: 1px dashed var(--chapter-coral);
}

.arc-final .arc-node {
  background: var(--chapter-coral);
  color: var(--chapter-ink);
  border-color: var(--chapter-coral);
}

.arc-label {
  color: rgba(245, 240, 231, 0.7);
  font-size: 10px;
  font-weight: 780;
  letter-spacing: 0.1em;
  text-align: center;
  text-transform: uppercase;
}

.decision-arc-note {
  max-width: 780px;
  margin: 20px 0 0;
  color: rgba(245, 240, 231, 0.46);
  font-size: 12px;
}

.journey-list {
  padding: 0;
  margin: clamp(68px, 9vw, 120px) 0 0;
  border-top: 1px solid rgba(245, 240, 231, 0.25);
  list-style: none;
}

.journey-list li {
  display: grid;
  grid-template-columns: minmax(110px, 0.28fr) 1fr;
  gap: clamp(28px, 5vw, 82px);
  padding: clamp(30px, 4vw, 52px) 0;
  border-bottom: 1px solid rgba(245, 240, 231, 0.18);
}

.day-number {
  color: var(--chapter-blue);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.journey-list h3 {
  margin-bottom: 12px;
  color: var(--chapter-ivory);
  font-size: clamp(31px, 4vw, 55px);
}

.journey-list p {
  max-width: 760px;
  margin-bottom: 0;
  color: rgba(245, 240, 231, 0.6);
}

.fit-heading {
  max-width: 1060px;
}

.fit-columns {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  margin-top: clamp(66px, 9vw, 120px);
  border: 1px solid var(--chapter-line);
}

.fit-columns article {
  padding: clamp(34px, 5vw, 66px);
}

.fit-columns article + article {
  border-left: 1px solid var(--chapter-line);
}

.fit-label {
  margin-bottom: 40px;
  color: var(--chapter-blue);
}

.fit-not .fit-label {
  color: var(--chapter-coral);
}

.fit-columns ul {
  display: grid;
  gap: 23px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.fit-columns li {
  position: relative;
  padding-left: 24px;
  color: var(--chapter-muted);
}

.fit-columns li::before {
  position: absolute;
  top: 0.7em;
  left: 0;
  width: 6px;
  height: 6px;
  background: var(--chapter-gold);
  border-radius: 50%;
  content: "";
}

.invitation {
  padding-block: clamp(92px, 12vw, 170px);
  background:
    linear-gradient(160deg, transparent 58%, rgba(255, 93, 97, 0.11)),
    var(--chapter-ink-soft);
  color: var(--chapter-ivory);
}

.invitation-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.72fr);
  gap: clamp(54px, 9vw, 130px);
  align-items: start;
}

.founding-label {
  margin-bottom: 28px;
  color: var(--chapter-coral);
}

.invitation-lede {
  max-width: 720px;
  margin-top: 34px;
  color: rgba(245, 240, 231, 0.65);
  font-size: 18px;
}

.investment-card {
  padding: clamp(30px, 4vw, 52px);
  background: var(--chapter-ivory);
  color: var(--chapter-ink);
  border-top: 5px solid var(--chapter-coral);
}

.investment-label {
  margin-bottom: 34px;
  color: var(--chapter-muted);
}

.investment-price {
  margin-bottom: 0;
  font-family: var(--chapter-serif);
  font-size: clamp(46px, 6vw, 76px);
  font-weight: 400;
  letter-spacing: -0.05em;
  line-height: 1;
}

.investment-price span {
  display: block;
  margin-bottom: 8px;
  color: var(--chapter-blue);
  font-family: var(--chapter-sans);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.investment-party {
  margin: 14px 0 34px;
  color: var(--chapter-muted);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.investment-party strong {
  display: block;
  margin-bottom: 7px;
  color: var(--chapter-ink);
  font-size: 16px;
  letter-spacing: 0.1em;
}

.investment-card ul {
  padding: 0;
  margin: 0 0 28px;
  border-top: 1px solid var(--chapter-line);
  list-style: none;
}

.investment-card li {
  padding: 12px 0;
  border-bottom: 1px solid var(--chapter-line);
  font-size: 14px;
}

.investment-note,
.whatsapp-note {
  color: var(--chapter-muted);
  font-size: 11px;
  line-height: 1.55;
}

.investment-card .chapter-button {
  width: 100%;
  margin-top: 8px;
}

.whatsapp-note {
  margin: 14px 0 0;
}

.faq-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.65fr) minmax(0, 1.35fr);
  gap: clamp(54px, 10vw, 150px);
}

.faq-list {
  border-top: 1px solid var(--chapter-line);
}

.faq-list details {
  border-bottom: 1px solid var(--chapter-line);
}

.faq-list summary {
  position: relative;
  padding: 25px 48px 25px 0;
  cursor: pointer;
  font-family: var(--chapter-serif);
  font-size: clamp(19px, 2vw, 27px);
  line-height: 1.25;
  list-style: none;
}

html[data-lang="zh"] .faq-list summary {
  font-family: "Noto Serif TC", "Songti TC", var(--chapter-serif);
  font-weight: 600;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  position: absolute;
  top: 24px;
  right: 2px;
  color: var(--chapter-coral);
  content: "+";
  font-family: var(--chapter-sans);
  font-size: 27px;
  line-height: 1;
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-list details p {
  max-width: 760px;
  padding: 0 50px 26px 0;
  margin: 0;
  color: var(--chapter-muted);
}

.final-cta {
  padding-block: clamp(90px, 11vw, 150px);
  background: var(--chapter-blue);
  color: white;
}

.final-cta-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap: clamp(50px, 9vw, 140px);
  align-items: end;
}

.final-kicker {
  grid-column: 1 / -1;
  margin-bottom: -10px;
  color: rgba(255, 255, 255, 0.58);
}

.final-cta-grid > div p {
  margin-bottom: 26px;
  color: rgba(255, 255, 255, 0.76);
}

.chapter-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 34px 70px;
  align-items: start;
  padding: 54px var(--chapter-gutter);
  background: var(--chapter-ink);
  color: var(--chapter-ivory);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-brand img {
  width: 36px;
}

.footer-brand p {
  display: grid;
  margin: 0;
  line-height: 1;
}

.footer-brand strong {
  letter-spacing: 0.22em;
}

.footer-brand span {
  margin-top: 7px;
  color: rgba(245, 240, 231, 0.58);
  font-size: 8px;
  font-weight: 750;
  letter-spacing: 0.2em;
}

.chapter-footer > p,
.chapter-footer nav {
  margin: 0;
  color: rgba(245, 240, 231, 0.6);
  font-size: 12px;
}

.chapter-footer nav {
  display: flex;
  gap: 22px;
  justify-content: flex-end;
}

.chapter-footer nav a {
  text-underline-offset: 4px;
}

.footer-disclaimer {
  grid-column: 1 / -1;
  max-width: 940px;
  padding-top: 28px;
  border-top: 1px solid rgba(245, 240, 231, 0.17);
  line-height: 1.6;
}

@media (max-width: 1080px) {
  .chapter-header {
    grid-template-columns: auto 1fr;
  }

  .chapter-nav {
    display: none;
  }

  .chapter-actions {
    justify-self: end;
  }

  .chapter-hero {
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 42px;
  }

  .folio-mark {
    min-height: 260px;
  }

  .folio-mark strong {
    font-size: 140px;
  }

  .manifesto-grid,
  .section-heading-row,
  .journey-heading,
  .invitation-grid,
  .faq-grid,
  .final-cta-grid {
    grid-template-columns: 1fr;
  }

  .manifesto-copy,
  .section-heading-row > p,
  .journey-heading > p {
    max-width: 720px;
  }

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

  .invitation-main {
    max-width: 920px;
  }

  .investment-card {
    max-width: 680px;
  }

  .final-kicker {
    margin-bottom: 0;
  }

  .final-cta-grid > div {
    max-width: 600px;
  }
}

@media (max-width: 820px) {
  .header-enquire {
    display: none;
  }

  .chapter-hero {
    min-height: auto;
    grid-template-columns: 1fr;
    padding-top: 72px;
  }

  .hero-folio {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
  }

  .folio-mark {
    min-height: 230px;
  }

  .hero-folio dl {
    align-self: end;
  }

  .hero-cta-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .not-this-grid {
    grid-template-columns: 1fr;
  }

  .not-this-grid article {
    min-height: 0;
    border-right: 0;
    border-bottom: 1px solid var(--chapter-line);
  }

  .not-this-grid article:last-child {
    border-bottom: 0;
  }

  .not-index {
    margin-bottom: 36px;
  }

  .private-grid,
  .experience-grid,
  .fit-columns {
    grid-template-columns: 1fr;
  }

  .private-copy {
    padding-top: 0;
  }

  .experience-grid article {
    min-height: 340px;
  }

  .fit-columns article + article {
    border-top: 1px solid var(--chapter-line);
    border-left: 0;
  }

  .summer-note {
    grid-template-columns: 1fr;
  }

  .decision-arc-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .chapter-footer {
    grid-template-columns: 1fr;
  }

  .chapter-footer nav {
    justify-content: flex-start;
    flex-wrap: wrap;
  }
}

@media (max-width: 580px) {
  body {
    font-size: 16px;
  }

  .chapter-header {
    min-height: 66px;
    padding-block: 10px;
  }

  .chapter-brand strong {
    font-size: 16px;
  }

  .chapter-brand small {
    font-size: 7px;
  }

  .chapter-hero {
    min-height: calc(100svh - 66px);
    padding-top: 58px;
  }

  .chapter-hero::before {
    inset: 9px;
  }

  .collection-line {
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 9px 14px;
  }

  .collection-line::after {
    min-width: 100%;
    order: 3;
  }

  .chapter-number {
    font-size: 16px;
  }

  .chapter-hero h1 {
    font-size: clamp(68px, 25vw, 112px);
  }

  .hero-thesis {
    font-size: 36px;
  }

  .chapter-button {
    width: 100%;
  }

  .hero-folio {
    grid-template-columns: 1fr;
  }

  .folio-mark {
    min-height: 250px;
  }

  .quiet-list li,
  .journey-list li {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .decision-arc-legend {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .experience-grid article {
    min-height: 310px;
  }

  .experience-label {
    margin-bottom: 54px;
  }

  .experience-number {
    font-size: 72px;
  }

  .chapter-footer {
    gap: 24px;
  }
}

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

  * {
    transition: none !important;
  }
}

@media print {
  .chapter-header,
  .chapter-button,
  .skip-link {
    display: none !important;
  }

  .chapter-hero,
  .private-principle,
  .journey,
  .invitation,
  .final-cta,
  .chapter-footer {
    print-color-adjust: exact;
  }
}