:root {
  --cream: #FBF3E7;
  --cream-2: #F3E6D3;
  --ink: #2B2420;
  --ink-soft: #6B5F55;
  --red: #B23A2E;
  --red-deep: #8C2A20;
  --gold: #C9A24B;
  --sage-bg: #E7EFE3;
  --sage-text: #3E5C3A;
  --line: #E4D5BC;
  --serif: "Playfair Display", Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --ease: cubic-bezier(0.16, 0.8, 0.3, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { max-width: 100%; display: block; }
a { color: inherit; }

.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Scroll progress bar */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--red), var(--gold));
  z-index: 100;
}

/* Seal badge */
.seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--red);
  color: #fff;
  font-family: var(--serif);
  font-size: 1.3rem;
  border-radius: 8px;
  flex-shrink: 0;
}
.seal.sm { width: 32px; height: 32px; font-size: 1rem; border-radius: 6px; }
.seal.lg { width: 64px; height: 64px; font-size: 1.8rem; border-radius: 12px; }

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 243, 231, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.nav.scrolled {
  border-color: var(--line);
  box-shadow: 0 6px 24px rgba(43, 36, 32, 0.06);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  transition: padding 0.3s ease;
}
.nav.scrolled .nav-inner { padding: 10px 24px; }
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--ink);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  position: relative;
  text-decoration: none;
  font-size: 0.95rem;
  color: var(--ink-soft);
  font-weight: 500;
  transition: color 0.2s ease;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -5px;
  height: 2px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.nav-links a:hover { color: var(--red); }
.nav-links a.active { color: var(--red-deep); }
.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }
.nav-cta {
  background: var(--red);
  color: #fff !important;
  padding: 9px 18px;
  border-radius: 100px;
  font-weight: 600;
}
.nav-cta::after { display: none; }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--ink);
  margin: 5px 0;
}

@media (max-width: 780px) {
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--cream);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px 28px;
    border-bottom: 1px solid var(--line);
    display: none;
    gap: 18px;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: 72px 0 88px;
}
.aurora {
  position: absolute;
  inset: -15% -10%;
  z-index: 0;
  pointer-events: none;
  filter: blur(70px);
  opacity: 0.5;
}
.aurora span {
  position: absolute;
  border-radius: 50%;
}
.aurora span:nth-child(1) {
  width: 420px; height: 420px;
  background: var(--red);
  top: -120px; left: -100px;
  animation: drift1 20s ease-in-out infinite;
}
.aurora span:nth-child(2) {
  width: 360px; height: 360px;
  background: var(--gold);
  top: 40px; right: -80px;
  animation: drift2 24s ease-in-out infinite;
}
.aurora span:nth-child(3) {
  width: 320px; height: 320px;
  background: var(--red-deep);
  bottom: -140px; left: 35%;
  animation: drift3 28s ease-in-out infinite;
}
@keyframes drift1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(50px, 40px) scale(1.12); }
}
@keyframes drift2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-40px, 30px) scale(1.08); }
}
@keyframes drift3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -30px) scale(1.15); }
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--red-deep);
  font-weight: 700;
  margin-bottom: 18px;
}
h1 {
  font-family: var(--serif);
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  line-height: 1.12;
  margin: 0 0 22px;
}
.word { display: inline-block; overflow: hidden; vertical-align: top; }
.word-inner {
  display: inline-block;
  transform: translateY(115%);
  transition: transform 0.9s var(--ease);
  transition-delay: calc(var(--i, 0) * 0.05s);
}
.word-inner.in { transform: translateY(0); }

.lede {
  font-size: 1.15rem;
  color: var(--ink-soft);
  max-width: 46ch;
  margin: 0 0 30px;
}
.quote-line {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.25rem;
  color: var(--ink);
}
.btn-row { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 8px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font-weight: 600;
  padding: 14px 26px;
  border-radius: 100px;
  font-size: 0.98rem;
  border: 1px solid transparent;
  transition: background 0.25s ease, color 0.25s ease, transform 0.2s ease, box-shadow 0.25s ease;
  will-change: transform;
}
.btn-primary { background: var(--red); color: #fff; }
.btn-primary:hover { background: var(--red-deep); box-shadow: 0 10px 30px rgba(178,58,46,0.3); }
.btn-ghost { border-color: var(--ink); color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--cream); }

.portrait-frame {
  aspect-ratio: 4 / 5;
  border-radius: 18px;
  background: linear-gradient(160deg, var(--red) 0%, var(--red-deep) 100%);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transform: perspective(900px) rotateX(0) rotateY(0);
  transition: transform 0.15s ease-out;
  will-change: transform;
}
.portrait-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
}
.portrait-frame .mark {
  font-family: var(--serif);
  font-size: 7rem;
  color: rgba(255,255,255,0.16);
}
.portrait-frame .cap {
  position: absolute;
  bottom: 22px;
  left: 22px;
  right: 22px;
  color: rgba(255,255,255,0.85);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-top: 1px solid rgba(255,255,255,0.3);
  padding-top: 10px;
}

@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; }
  .portrait-frame { max-width: 340px; margin: 0 auto; }
}

/* Sub-page header */
.page-hero {
  position: relative;
  overflow: hidden;
  padding: 64px 0 52px;
}
.page-hero-inner { position: relative; z-index: 1; }
.page-hero h1 { margin-bottom: 12px; }
.page-hero p { color: var(--ink-soft); font-size: 1.05rem; max-width: 60ch; margin: 0; }

.page-cta {
  text-align: center;
  padding-top: 8px;
}
.page-cta a { display: inline-flex; }

/* Marquee brand strip */
.marquee {
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--cream-2);
  padding: 16px 0;
}
.marquee-track {
  display: flex;
  width: max-content;
  gap: 48px;
  animation: marquee 30s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track .grp { display: flex; gap: 48px; }
.marquee-track span {
  font-family: var(--serif);
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  color: var(--red-deep);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* Sections */
section { padding: 76px 0; }
.section-head { max-width: 640px; margin: 0 0 44px; }
.section-head .eyebrow { margin-bottom: 14px; }
h2 {
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  margin: 0 0 14px;
}
.section-head p { color: var(--ink-soft); font-size: 1.05rem; margin: 0; }
.divider { border: none; border-top: 1px solid var(--line); margin: 0; }

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.about-grid p { margin: 0 0 18px; color: var(--ink-soft); }
.about-photo {
  width: min(100%, 420px);
  display: block;
  border-radius: 50%;
  margin-top: 24px;
  object-fit: cover;
  aspect-ratio: 1 / 1;
  box-shadow: 0 18px 50px rgba(0,0,0,0.14);
}
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.chip {
  background: var(--sage-bg);
  color: var(--sage-text);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 100px;
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-num {
  display: block;
  font-family: var(--serif);
  font-size: clamp(2.2rem, 4vw, 3rem);
  color: var(--red);
  font-weight: 700;
}
.stat-label {
  display: block;
  margin-top: 8px;
  font-size: 0.82rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
@media (max-width: 700px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); row-gap: 40px; }
}

/* Pull quote */
.pullquote {
  background: var(--cream-2);
  border-radius: 20px;
  padding: 56px;
  text-align: center;
  position: relative;
}
.pullquote .seal { margin: 0 auto 24px; }
.pullquote blockquote {
  font-family: var(--serif);
  font-size: clamp(1.3rem, 2.6vw, 1.9rem);
  line-height: 1.4;
  margin: 0;
  max-width: 46ch;
  margin-inline: auto;
}
.pullquote cite {
  display: block;
  margin-top: 20px;
  font-style: normal;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

/* Personality */
.traits { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 0; }
.trait {
  border: 1px solid var(--ink);
  padding: 10px 20px;
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: background 0.2s ease, color 0.2s ease;
}
.trait:hover { background: var(--ink); color: var(--cream); }

/* Pillars */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.pillar-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px 22px;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.pillar-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(43, 36, 32, 0.1);
}
.pillar-card .seal { margin-bottom: 18px; transition: transform 0.35s var(--ease); }
.pillar-card:hover .seal { transform: rotate(-6deg) scale(1.05); }
.pillar-card h3 { font-family: var(--serif); font-size: 1.15rem; margin: 0 0 10px; }
.pillar-card p { font-size: 0.92rem; color: var(--ink-soft); margin: 0 0 14px; }
.pillar-card .ex {
  font-size: 0.82rem;
  font-style: italic;
  color: var(--red-deep);
  border-top: 1px dashed var(--line);
  padding-top: 12px;
}
.pillars-grid .pillar-card:nth-child(1) { transition-delay: 0s; }
.pillars-grid .pillar-card:nth-child(2) { transition-delay: 0.08s; }
.pillars-grid .pillar-card:nth-child(3) { transition-delay: 0.16s; }
.pillars-grid .pillar-card:nth-child(4) { transition-delay: 0.24s; }

@media (max-width: 900px) { .pillars-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) {
  .pillars-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
}

/* Gallery */
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.gallery-tile {
  aspect-ratio: 3 / 4;
  border-radius: 14px;
  background: linear-gradient(150deg, var(--cream-2), var(--line));
  position: relative;
  display: flex;
  align-items: flex-end;
  padding: 18px;
  overflow: hidden;
  transition: transform 0.35s var(--ease);
}
.gallery-tile:hover { transform: scale(1.03); }
.gallery-tile img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.gallery-tile.has-photo {
  background: none;
}
.gallery-tile.has-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0) 45%, rgba(0,0,0,0.65) 100%);
}
.gallery-tile span { position: relative; z-index: 1; font-size: 0.88rem; font-weight: 600; color: var(--ink); }
.gallery-tile.has-photo span { color: #fff; }
.gallery-tile::before {
  content: "行";
  position: absolute;
  top: 14px; right: 16px;
  z-index: 1;
  font-family: var(--serif);
  font-size: 1.6rem;
  color: rgba(178,58,46,0.35);
  transition: transform 0.5s var(--ease);
}
.gallery-tile.has-photo::before { color: rgba(255,255,255,0.75); }
.gallery-tile:hover::before { transform: rotate(12deg) scale(1.1); }
.gallery-grid .gallery-tile:nth-child(1) { transition-delay: 0s; }
.gallery-grid .gallery-tile:nth-child(2) { transition-delay: 0.1s; }
.gallery-grid .gallery-tile:nth-child(3) { transition-delay: 0.2s; }
@media (max-width: 700px) { .gallery-grid { grid-template-columns: 1fr 1fr; } }

/* Connect / footer */
.connect {
  background: var(--ink);
  color: var(--cream);
  border-radius: 24px;
  padding: 60px 48px;
  text-align: center;
}
.connect h2 { color: var(--cream); }
.connect p { color: #cfc4b6; max-width: 50ch; margin: 0 auto 30px; }
.connect .btn-primary { background: var(--red); }
.connect .btn-ghost { border-color: var(--cream); color: var(--cream); }
.connect .btn-ghost:hover { background: var(--cream); color: var(--ink); }

.disclaimer {
  font-size: 0.78rem;
  color: var(--ink-soft);
  text-align: center;
  max-width: 60ch;
  margin: 40px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.connect .disclaimer { color: #a89a89; border-top-color: rgba(255,255,255,0.15); }

footer {
  padding: 40px 0 60px;
  text-align: center;
  color: var(--ink-soft);
  font-size: 0.85rem;
}
footer .seal { margin: 0 auto 14px; }

/* Reveal system: visible by default, JS adds .pending briefly before revealing */
.fade-in {
  opacity: 1;
  transform: none;
  filter: blur(0);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease), filter 0.8s ease;
}
.fade-in.pending {
  opacity: 0;
  transform: translateY(24px) scale(0.98);
  filter: blur(6px);
}

/* Learn / pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  align-items: stretch;
}
.price-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 34px 28px 28px;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.price-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 44px rgba(43, 36, 32, 0.1);
}
.price-card.featured {
  background: var(--ink);
  color: var(--cream);
  border-color: var(--ink);
  box-shadow: 0 22px 56px rgba(43, 36, 32, 0.22);
}
.price-card .seal { margin-bottom: 18px; }
.price-card.featured .seal { background: var(--gold); color: var(--ink); }
.price-card h3 { font-family: var(--serif); font-size: 1.4rem; margin: 0 0 12px; }
.price-tag { display: flex; align-items: baseline; gap: 8px; margin: 0 0 6px; }
.price-tag .amount {
  font-family: var(--serif);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--red);
  line-height: 1;
}
.price-card.featured .amount { color: var(--gold); }
.price-tag .per { font-size: 0.9rem; color: var(--ink-soft); }
.price-card.featured .per { color: #cfc4b6; }
.price-sub { font-size: 0.9rem; color: var(--ink-soft); margin: 0 0 22px; }
.price-card.featured .price-sub { color: #cfc4b6; }
.perks { list-style: none; padding: 0; margin: 0 0 28px; flex: 1; }
.perks li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 11px;
  font-size: 0.93rem;
  line-height: 1.45;
}
.perks li::before {
  content: "✓";
  position: absolute;
  left: 0; top: 0;
  color: var(--red);
  font-weight: 700;
}
.price-card.featured .perks li::before { color: var(--gold); }
.price-card .btn { justify-content: center; width: 100%; }
.price-card.featured .btn-primary { background: var(--red); }
.price-card.featured .btn-primary:hover { background: var(--red-deep); }
.badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gold);
  color: var(--ink);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 100px;
  white-space: nowrap;
}
.pricing-note {
  text-align: center;
  color: var(--ink-soft);
  font-size: 0.9rem;
  margin: 34px auto 0;
}
.pricing-note a { color: var(--red-deep); }
.pricing-grid .price-card:nth-child(1) { transition-delay: 0s; }
.pricing-grid .price-card:nth-child(2) { transition-delay: 0.08s; }
.pricing-grid .price-card:nth-child(3) { transition-delay: 0.16s; }
@media (max-width: 900px) {
  .pricing-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .price-card.featured { order: -1; }
}

.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.step-num {
  display: block;
  font-family: var(--serif);
  font-size: 2rem;
  color: var(--gold);
  font-weight: 700;
  margin-bottom: 10px;
}
.step h3 { font-family: var(--serif); font-size: 1.15rem; margin: 0 0 8px; }
.step p { color: var(--ink-soft); margin: 0; font-size: 0.95rem; }
@media (max-width: 700px) { .steps-grid { grid-template-columns: 1fr; } }

.faq-list { max-width: 720px; }
.faq-list details {
  border-top: 1px solid var(--line);
  padding: 18px 0;
}
.faq-list details:last-child { border-bottom: 1px solid var(--line); }
.faq-list summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 1.02rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  font-family: var(--serif);
  font-size: 1.4rem;
  color: var(--red);
  transition: transform 0.3s var(--ease);
}
.faq-list details[open] summary::after { transform: rotate(45deg); }
.faq-list details p { color: var(--ink-soft); margin: 12px 0 0; max-width: 62ch; }

/* Home teaser for Learn */
.learn-teaser {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
  background: var(--cream-2);
  border-radius: 24px;
  padding: 48px;
}
.learn-teaser p { color: var(--ink-soft); margin: 0 0 24px; }
.teaser-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.teaser-list li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 18px;
  font-size: 0.95rem;
}
.teaser-list li strong { font-weight: 600; }
.teaser-list li span { color: var(--red-deep); font-weight: 700; white-space: nowrap; }
@media (max-width: 800px) { .learn-teaser { grid-template-columns: 1fr; padding: 32px 24px; } }

/* Language switch (EN / 中文) */
:root {
  --serif: "Playfair Display", "Noto Serif SC", "Songti SC", "STSong", Georgia, serif;
  --sans: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
.nav-inner { gap: 22px; }
.nav-links { margin-left: auto; }
.nav-right { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.lang-switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: 3px;
  cursor: pointer;
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ink-soft);
  line-height: 1;
  transition: box-shadow 0.3s ease;
}
.lang-switch:hover { box-shadow: 0 6px 18px rgba(43, 36, 32, 0.1); }
.lang-switch:focus-visible { outline: 2px solid var(--red); outline-offset: 2px; }
.lang-switch .opt {
  position: relative;
  z-index: 1;
  padding: 6px 11px;
  border-radius: 100px;
  letter-spacing: 0.04em;
  transition: color 0.3s ease;
  white-space: nowrap;
}
.lang-switch .knob {
  position: absolute;
  top: 3px;
  left: 3px;
  height: calc(100% - 6px);
  width: 40px;
  background: var(--ink);
  border-radius: 100px;
  transform: translateX(var(--knob-x, 0px));
  transition: transform 0.35s var(--ease), width 0.35s var(--ease);
}
html[data-lang="en"] .lang-switch .opt[data-lang="en"],
html[data-lang="zh"] .lang-switch .opt[data-lang="zh"] { color: var(--cream); }
html[lang="zh-Hans"] .eyebrow { letter-spacing: 0.08em; }
html[lang="zh-Hans"] .stat-label { letter-spacing: 0.08em; }
html[lang="zh-Hans"] h1 { line-height: 1.25; }
html[lang="zh-Hans"] .quote-line { font-style: normal; }
@media (max-width: 780px) {
  .lang-switch .opt { padding: 6px 9px; }
}