/* gangnam-stem-cell.com — Liu Mei-Hua HK luxury magazine
   Palette: charcoal #1A1A1A / champagne gold #C9A961 / cream #F5F0E8
   Typography: Playfair Display (headers) / Lora (body) — Google Fonts CDN
   Reset, restraint, asymmetric magazine grid. No frameworks.
*/

:root {
  --color-ink: #1A1A1A;
  --color-gold: #C9A961;
  --color-gold-soft: #B8964F;
  --color-cream: #F5F0E8;
  --color-paper: #FFFFFF;
  --color-rule: #E5DCC8;
  --color-mute: #6B6B6B;
  --font-serif-display: 'Playfair Display', 'Noto Serif TC', Georgia, serif;
  --font-serif-body: 'Lora', 'Noto Serif TC', Georgia, 'Times New Roman', serif;
  --measure: 720px;
  --gutter: 32px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-serif-body);
  font-size: 18px;
  line-height: 1.7;
  font-feature-settings: "liga" 1, "kern" 1;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-ink);
  text-decoration-color: var(--color-gold);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color .2s ease;
}
a:hover { color: var(--color-gold-soft); }

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

/* ── Masthead ───────────────────────────── */
.masthead {
  border-bottom: 1px solid var(--color-rule);
  background: var(--color-paper);
  padding: 18px 0;
}
.masthead-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  font-family: var(--font-serif-display);
  font-size: 22px;
  letter-spacing: .03em;
  font-weight: 700;
  color: var(--color-ink);
  text-decoration: none;
  white-space: nowrap;
}
.brand-rule {
  display: inline-block;
  width: 24px;
  height: 1px;
  background: var(--color-gold);
  vertical-align: middle;
  margin: 0 10px 4px;
}
.brand-tag {
  font-family: var(--font-serif-body);
  font-size: 12px;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--color-mute);
}
.primary-nav { display: flex; }
.nav {
  display: flex;
  gap: 26px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-serif-body);
  font-size: 13px;
  letter-spacing: .14em;
  text-transform: uppercase;
  align-items: center;
}
.nav a {
  text-decoration: none;
  color: var(--color-ink);
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease, color .2s ease;
}
.nav a:hover {
  color: var(--color-gold-soft);
  border-bottom-color: var(--color-gold);
}
.nav .nav-about a { color: var(--color-mute); font-style: italic; letter-spacing: .12em; }
.nav .nav-about a:hover { color: var(--color-gold-soft); }

.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  padding: 8px;
  cursor: pointer;
  width: 38px;
  height: 38px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  height: 1.5px;
  width: 22px;
  background: var(--color-ink);
  transition: transform .25s ease, opacity .25s ease;
}
.nav-toggle.is-open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

@media (max-width: 900px) {
  .masthead-inner { flex-wrap: wrap; }
  .nav-toggle { display: flex; }
  .primary-nav {
    display: none;
    flex-basis: 100%;
    margin-top: 8px;
    border-top: 1px solid var(--color-rule);
    padding-top: 14px;
  }
  .primary-nav.is-open { display: block; }
  .nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    font-size: 13px;
  }
  .nav a { display: inline-block; padding: 4px 0; }
  .brand-tag { display: none; }
}

/* ── Hero ───────────────────────────────── */
.hero {
  background: var(--color-cream);
  padding: 0;
  border-bottom: 1px solid var(--color-rule);
}
.hero-image-wrap {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #ddd;
}
.hero-image-wrap img { width: 100%; height: 100%; object-fit: cover; }
.hero-text {
  max-width: 1000px;
  margin: 0 auto;
  padding: 60px var(--gutter) 48px;
  text-align: center;
}
.kicker {
  font-family: var(--font-serif-body);
  font-style: italic;
  font-size: 13px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--color-gold-soft);
  margin: 0 0 16px;
}
.hero h1 {
  font-family: var(--font-serif-display);
  font-size: clamp(28px, 4.4vw, 52px);
  line-height: 1.15;
  font-weight: 600;
  margin: 0 0 18px;
  letter-spacing: -.005em;
}
.hero-dek {
  font-family: var(--font-serif-body);
  font-style: italic;
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.55;
  color: var(--color-mute);
  margin: 0 auto;
  max-width: 700px;
}
.hero-rule {
  width: 60px;
  height: 1px;
  background: var(--color-gold);
  margin: 32px auto 0;
}
.hero-meta {
  margin: 18px 0 0;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--color-mute);
}
.hero-meta a { color: var(--color-mute); text-decoration: none; }
.hero-meta a:hover { color: var(--color-gold-soft); }

/* ── Article body ───────────────────────── */
.article {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 64px var(--gutter) 48px;
}
.article p {
  margin: 0 0 1.4em;
  font-size: 18px;
  line-height: 1.78;
}
.article .lede { font-size: 19px; line-height: 1.75; }

/* Drop cap on first paragraph */
.article .lede::first-letter {
  font-family: var(--font-serif-display);
  font-weight: 600;
  color: var(--color-gold);
  float: left;
  font-size: 4.6em;
  line-height: .9;
  margin: .08em .12em -.08em 0;
}

.article h2 {
  font-family: var(--font-serif-display);
  font-size: clamp(24px, 2.6vw, 32px);
  line-height: 1.25;
  font-weight: 600;
  margin: 56px 0 16px;
  letter-spacing: -.005em;
}
.article h2::before {
  content: "";
  display: block;
  width: 36px;
  height: 1px;
  background: var(--color-gold);
  margin: 0 0 14px;
}
.article h3 {
  font-family: var(--font-serif-display);
  font-size: 22px;
  line-height: 1.3;
  font-weight: 600;
  margin: 36px 0 10px;
  color: var(--color-ink);
}
.article ul, .article ol {
  margin: 0 0 1.5em;
  padding-left: 1.4em;
}
.article ul li, .article ol li {
  margin-bottom: .55em;
  line-height: 1.7;
}
.article ul { list-style: none; padding-left: 0; }
.article ul li {
  padding-left: 22px;
  position: relative;
}
.article ul li::before {
  content: "—";
  color: var(--color-gold);
  position: absolute;
  left: 0;
  top: 0;
  font-weight: 600;
}

/* Blockquote: serif italic, gold left bar */
.article blockquote {
  margin: 40px 0;
  padding: 14px 0 14px 28px;
  border-left: 2px solid var(--color-gold);
  font-family: var(--font-serif-display);
  font-style: italic;
  font-size: 22px;
  line-height: 1.5;
  color: var(--color-ink);
}
.article blockquote cite {
  display: block;
  margin-top: 16px;
  font-family: var(--font-serif-body);
  font-style: italic;
  font-size: 14px;
  color: var(--color-mute);
}

/* Images & captions */
.figure {
  margin: 40px -40px;
  text-align: center;
}
.figure img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 0;
}
.figure figcaption {
  font-family: var(--font-serif-body);
  font-style: italic;
  font-size: 14px;
  color: var(--color-mute);
  margin-top: 12px;
  padding: 0 32px;
  line-height: 1.55;
}
@media (max-width: 800px) {
  .figure { margin: 32px 0; }
  .figure figcaption { padding: 0 8px; }
}

/* Tables — clean, no zebra */
.table-wrap {
  margin: 36px 0;
  overflow-x: auto;
}
.article table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-serif-body);
  font-size: 15px;
  line-height: 1.55;
}
.article table th,
.article table td {
  text-align: left;
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-rule);
  vertical-align: top;
}
.article table th {
  font-family: var(--font-serif-display);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: .05em;
  text-transform: uppercase;
  border-bottom: 1.5px solid var(--color-gold);
  color: var(--color-ink);
}

/* FAQ — native details */
.faq-section { margin: 64px 0 24px; }
.faq-section h2 { margin-top: 0; }
.faq-item {
  border-bottom: 1px solid var(--color-rule);
  padding: 4px 0;
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  font-family: var(--font-serif-display);
  font-size: 19px;
  line-height: 1.45;
  font-weight: 600;
  color: var(--color-ink);
  padding: 22px 40px 22px 0;
  position: relative;
  outline: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 18px;
  font-family: var(--font-serif-display);
  font-size: 28px;
  font-weight: 400;
  color: var(--color-gold);
  transition: transform .2s ease;
  line-height: 1;
}
.faq-item[open] summary::after { content: "−"; }
.faq-item .faq-answer {
  padding: 0 0 22px;
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-ink);
}

/* Anchor jump links (glossary letter index) */
.letter-index {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 32px 0 56px;
  padding: 24px 28px;
  background: var(--color-cream);
  border-top: 1px solid var(--color-gold);
  border-bottom: 1px solid var(--color-gold);
}
.letter-index a {
  display: inline-block;
  min-width: 36px;
  padding: 6px 10px;
  text-align: center;
  font-family: var(--font-serif-display);
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  color: var(--color-ink);
  border: 1px solid transparent;
  transition: all .15s ease;
}
.letter-index a:hover {
  border-color: var(--color-gold);
  color: var(--color-gold-soft);
}

/* Glossary letter section */
.glossary-letter {
  font-family: var(--font-serif-display);
  font-size: 64px;
  font-weight: 600;
  color: var(--color-gold);
  margin: 56px 0 8px;
  line-height: 1;
}
.glossary-letter::before { display: none; }
.glossary-term {
  margin: 28px 0;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-rule);
}
.glossary-term h3 {
  margin: 0 0 10px;
  font-size: 21px;
}

/* Listicle item card */
.listicle-item {
  margin: 56px 0;
  padding-bottom: 44px;
  border-bottom: 1px solid var(--color-rule);
}
.listicle-item:last-child { border-bottom: none; }
.listicle-item h2 {
  margin-top: 8px;
}

/* Hospital hub specific */
.hospital-card {
  margin: 32px 0;
  padding: 28px 32px;
  background: var(--color-cream);
  border-left: 3px solid var(--color-gold);
}
.hospital-card h2 { margin-top: 0; }
.hospital-card h2::before { display: none; }

.disclosure-block {
  margin: 56px 0;
  padding: 28px 32px;
  background: var(--color-cream);
  border: 1px solid var(--color-rule);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-mute);
  font-style: italic;
}
.disclosure-block::before {
  content: "Editorial disclosure";
  display: block;
  font-family: var(--font-serif-display);
  font-style: normal;
  font-size: 12px;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--color-gold-soft);
  margin-bottom: 12px;
}

/* CTA section — Hospital hub only */
.cta-section {
  margin: 64px 0 24px;
  padding: 56px var(--gutter);
  background: var(--color-ink);
  color: var(--color-cream);
  text-align: center;
}
.cta-section .cta-text {
  max-width: 640px;
  margin: 0 auto 32px;
  font-family: var(--font-serif-display);
  font-style: italic;
  font-size: 21px;
  line-height: 1.55;
  color: var(--color-cream);
}
.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 18px 36px;
  background: var(--color-gold);
  color: var(--color-ink);
  font-family: var(--font-serif-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: .03em;
  text-decoration: none;
  border: none;
  transition: background .2s ease;
}
.cta-button:hover { background: #DCB97A; color: var(--color-ink); }
.cta-button svg { width: 22px; height: 22px; flex-shrink: 0; }

/* Calculator placeholder */
.calculator {
  margin: 40px 0;
  padding: 32px;
  background: var(--color-cream);
  border: 1px solid var(--color-rule);
}
.calculator label {
  display: block;
  margin: 14px 0 6px;
  font-size: 14px;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--color-mute);
}
.calculator input, .calculator select {
  width: 100%;
  padding: 10px 14px;
  font-family: var(--font-serif-body);
  font-size: 16px;
  border: 1px solid var(--color-rule);
  background: var(--color-paper);
  color: var(--color-ink);
}
.calculator-output {
  margin-top: 24px;
  padding: 20px;
  border-top: 1px solid var(--color-gold);
  font-family: var(--font-serif-display);
  font-size: 18px;
}

/* Outbound link list */
.references {
  margin: 48px 0;
  padding: 24px 28px;
  border-top: 1px solid var(--color-rule);
  border-bottom: 1px solid var(--color-rule);
  font-size: 14px;
}
.references h3 {
  font-family: var(--font-serif-display);
  font-size: 14px;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin: 0 0 12px;
  color: var(--color-mute);
}
.references ul { list-style: none; padding: 0; margin: 0; }
.references li::before { display: none; }
.references li { padding-left: 0; margin-bottom: 6px; }

/* ── Footer ─────────────────────────────── */
.footer {
  margin-top: 80px;
  border-top: 1px solid var(--color-gold);
  background: var(--color-cream);
  padding: 56px var(--gutter) 32px;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
}
.footer-operator {
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-mute);
}
.footer-operator strong {
  display: block;
  font-family: var(--font-serif-display);
  font-size: 16px;
  letter-spacing: .03em;
  color: var(--color-ink);
  margin-bottom: 8px;
  font-weight: 600;
}
.footer-nav h4 {
  font-family: var(--font-serif-display);
  font-size: 14px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--color-mute);
  margin: 0 0 14px;
  font-weight: 600;
}
.footer-nav ul { list-style: none; padding: 0; margin: 0; }
.footer-nav li { margin-bottom: 8px; font-size: 14px; }
.footer-nav a { text-decoration: none; color: var(--color-ink); }
.footer-nav a:hover { color: var(--color-gold-soft); }
.footer-brand {
  font-family: var(--font-serif-display);
  font-size: 13px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--color-mute);
  text-align: right;
}
.footer-brand strong {
  display: block;
  font-size: 17px;
  color: var(--color-ink);
  margin-bottom: 6px;
  font-weight: 600;
  letter-spacing: .03em;
}
.footer-bottom {
  max-width: 1200px;
  margin: 40px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--color-rule);
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--color-mute);
  text-align: center;
}

@media (max-width: 800px) {
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-brand { text-align: left; }
  .article { padding: 40px 24px; }
  .article .lede::first-letter { font-size: 3.6em; }
  .hero-text { padding: 40px 24px 32px; }
}

/* ── Homepage ───────────────────────────── */
.home-intro {
  max-width: 820px;
  margin: 0 auto;
  padding: 64px var(--gutter) 32px;
  text-align: center;
}
.home-intro h1 {
  font-family: var(--font-serif-display);
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.1;
  font-weight: 600;
  margin: 16px 0 18px;
}
.home-intro .home-dek {
  font-family: var(--font-serif-body);
  font-style: italic;
  font-size: 19px;
  line-height: 1.55;
  color: var(--color-mute);
  margin: 0 auto 24px;
  max-width: 640px;
}
.home-intro::after {
  content: "";
  display: block;
  width: 60px;
  height: 1px;
  background: var(--color-gold);
  margin: 32px auto 0;
}
.home-cards {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px var(--gutter) 64px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 48px;
}
.home-card {
  display: block;
  text-decoration: none;
  color: inherit;
}
.home-card .home-card-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--color-cream);
  overflow: hidden;
  margin-bottom: 20px;
}
.home-card .home-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.home-card:hover .home-card-image img { transform: scale(1.04); }
.home-card .home-card-kicker {
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--color-gold-soft);
  margin-bottom: 8px;
}
.home-card h2 {
  font-family: var(--font-serif-display);
  font-size: 22px;
  line-height: 1.3;
  font-weight: 600;
  margin: 0 0 10px;
  color: var(--color-ink);
}
.home-card p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-mute);
  margin: 0;
  font-style: italic;
}

/* ── Homepage: category navigator ──────── */
.home-categories {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px var(--gutter) 80px;
}
.home-categories-head {
  text-align: center;
  margin: 0 0 36px;
}
.home-categories-head h2 {
  font-family: var(--font-serif-display);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 600;
  margin: 0 0 10px;
  letter-spacing: -.005em;
}
.home-categories-head p {
  font-family: var(--font-serif-body);
  font-style: italic;
  font-size: 16px;
  color: var(--color-mute);
  margin: 0 auto;
  max-width: 620px;
  line-height: 1.55;
}
.home-categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.home-category-card {
  display: block;
  padding: 28px 30px;
  text-decoration: none;
  color: var(--color-ink);
  background: var(--color-paper);
  border: 1px solid var(--color-rule);
  border-top: 2px solid var(--color-gold);
  transition: border-color .2s ease, transform .2s ease;
}
.home-category-card:hover {
  border-color: var(--color-gold);
  transform: translateY(-2px);
}
.home-category-card .home-category-name {
  font-family: var(--font-serif-display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -.005em;
  margin: 0 0 8px;
}
.home-category-card .home-category-meta {
  font-family: var(--font-serif-body);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--color-gold-soft);
  margin: 0 0 12px;
}
.home-category-card .home-category-blurb {
  font-family: var(--font-serif-body);
  font-style: italic;
  font-size: 15px;
  line-height: 1.55;
  color: var(--color-mute);
  margin: 0;
}

/* ── Category index page ────────────────── */
.category-hero {
  background: var(--color-cream);
  border-bottom: 1px solid var(--color-rule);
}
.category-hero-image {
  width: 100%;
  aspect-ratio: 21 / 9;
  overflow: hidden;
  background: #ddd;
}
.category-hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.category-hero-text {
  max-width: 880px;
  margin: 0 auto;
  padding: 56px var(--gutter) 44px;
  text-align: center;
}
.category-hero-text h1 {
  font-family: var(--font-serif-display);
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.1;
  font-weight: 600;
  margin: 12px 0 18px;
  letter-spacing: -.005em;
}
.category-hero-text .category-blurb {
  font-family: var(--font-serif-body);
  font-style: italic;
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.6;
  color: var(--color-mute);
  margin: 0 auto;
  max-width: 700px;
}
.category-hero-text::after {
  content: "";
  display: block;
  width: 60px;
  height: 1px;
  background: var(--color-gold);
  margin: 28px auto 0;
}
.category-grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 56px var(--gutter) 64px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 48px 36px;
}
.category-card {
  display: block;
  text-decoration: none;
  color: inherit;
}
.category-card-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--color-cream);
  overflow: hidden;
  margin-bottom: 18px;
}
.category-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.category-card:hover .category-card-image img { transform: scale(1.04); }
.category-card-kicker {
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--color-gold-soft);
  margin: 0 0 8px;
}
.category-card h2 {
  font-family: var(--font-serif-display);
  font-size: 22px;
  line-height: 1.3;
  font-weight: 600;
  margin: 0 0 8px;
  color: var(--color-ink);
  letter-spacing: -.003em;
}
.category-card-excerpt {
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-mute);
  margin: 0 0 12px;
  font-style: italic;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.category-card-readmore {
  font-family: var(--font-serif-body);
  font-size: 12px;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--color-gold-soft);
}

@media (max-width: 720px) {
  .category-grid { padding: 40px 24px 48px; gap: 36px 24px; }
  .category-hero-text { padding: 36px 24px 28px; }
}

/* Print */
@media print {
  .masthead, .footer, .cta-section, .nav, .nav-toggle { display: none; }
  body { font-size: 12pt; }
  .article { max-width: 100%; padding: 0; }
}