:root {
  --ink: #17231d;
  --muted: #667267;
  --deep: #0f241a;
  --leaf: #34533b;
  --sage: #e9eee6;
  --paper: #fbfaf6;
  --champagne: #c8a66a;
  --line: rgba(23, 35, 29, 0.14);
  --shadow: 0 24px 70px rgba(17, 31, 23, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 20;
  width: 100%;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 clamp(20px, 5vw, 72px);
  color: #fff;
  transition: background 180ms ease, color 180ms ease, box-shadow 180ms ease;
}

.site-header.is-scrolled {
  color: var(--ink);
  background: rgba(251, 250, 246, 0.92);
  box-shadow: 0 12px 34px rgba(22, 35, 29, 0.08);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 208px;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(200, 166, 106, 0.8);
  color: var(--champagne);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 16px;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 18px;
  line-height: 1.1;
}

.brand small {
  margin-top: 2px;
  color: currentColor;
  font-size: 11px;
  letter-spacing: 0.12em;
  opacity: 0.72;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 36px);
  color: currentColor;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-links a {
  opacity: 0.82;
}

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

.header-cta,
.primary-button,
.secondary-button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  padding: 0 22px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.header-cta {
  border-color: rgba(200, 166, 106, 0.8);
  color: currentColor;
}

.hero {
  position: relative;
  min-height: 96vh;
  display: grid;
  align-items: end;
  overflow: hidden;
  color: #fff;
}

.hero-media,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-media {
  background:
    linear-gradient(90deg, rgba(8, 20, 14, 0.2), rgba(8, 20, 14, 0.48)),
    url("https://upload.wikimedia.org/wikipedia/commons/6/6a/04_Zhejiang_tea_05.1987_01.jpg") center / cover;
  transform: scale(1.02);
}

.hero-overlay {
  background:
    linear-gradient(180deg, rgba(6, 17, 12, 0.3), rgba(6, 17, 12, 0.74)),
    radial-gradient(circle at 22% 65%, rgba(200, 166, 106, 0.22), transparent 34%);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(100%, 860px);
  padding: 150px clamp(20px, 6vw, 92px) 64px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--champagne);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

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

h1,
h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 500;
  line-height: 1.04;
}

h1 {
  max-width: 800px;
  margin-bottom: 24px;
  font-size: clamp(48px, 7vw, 88px);
}

h2 {
  margin-bottom: 22px;
  font-size: clamp(34px, 4.8vw, 62px);
}

h3 {
  margin-bottom: 10px;
  font-size: 18px;
  line-height: 1.25;
}

.hero-copy {
  max-width: 620px;
  margin-bottom: 34px;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(18px, 2vw, 22px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 52px;
}

.primary-button {
  background: var(--champagne);
  color: #111a14;
}

.secondary-button {
  border-color: rgba(255, 255, 255, 0.45);
  color: #fff;
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 740px;
  margin: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.24);
}

.hero-facts div {
  padding: 22px 26px 0 0;
}

.hero-facts dt {
  color: rgba(255, 255, 255, 0.52);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero-facts dd {
  margin: 7px 0 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 22px;
}

.intro,
.split-section,
.origin-section,
.supply-section,
.gallery-section,
.seo-section,
.faq-section,
.contact-section {
  padding: clamp(72px, 9vw, 132px) clamp(20px, 6vw, 92px);
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 0.75fr);
  gap: clamp(32px, 8vw, 110px);
  align-items: start;
  border-bottom: 1px solid var(--line);
}

.intro p:last-child,
.copy-panel > p,
.origin-copy p,
.contact-section > div > p {
  color: var(--muted);
  font-size: 18px;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(280px, 0.82fr) minmax(320px, 1fr);
  gap: clamp(32px, 7vw, 92px);
  align-items: center;
}

.image-panel {
  min-height: 640px;
  background-position: center;
  background-size: cover;
  box-shadow: var(--shadow);
}

.leaves-image {
  background-image:
    linear-gradient(180deg, rgba(15, 36, 26, 0.08), rgba(15, 36, 26, 0.2)),
    url("https://upload.wikimedia.org/wikipedia/commons/4/48/Tieguanyin2.jpg");
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.feature-grid article,
.supply-grid article,
.contact-card {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.58);
}

.feature-grid article {
  min-height: 172px;
  padding: 24px;
}

.feature-grid span {
  display: block;
  margin-bottom: 18px;
  color: var(--champagne);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 24px;
}

.feature-grid p,
.supply-grid p,
.contact-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.origin-section {
  display: grid;
  grid-template-columns: minmax(300px, 0.85fr) minmax(300px, 1fr);
  gap: clamp(36px, 8vw, 110px);
  align-items: center;
  background: var(--deep);
  color: #fff;
}

.origin-copy p {
  color: rgba(255, 255, 255, 0.74);
}

.origin-stats {
  display: grid;
  gap: 16px;
}

.origin-stats div {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 20px;
  align-items: center;
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.origin-stats strong {
  color: var(--champagne);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 500;
  line-height: 1;
}

.origin-stats span {
  color: rgba(255, 255, 255, 0.72);
}

.supply-section {
  background: var(--sage);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 40px;
}

.supply-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.supply-grid article {
  min-height: 230px;
  padding: 30px;
}

.gallery-section {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.gallery-section figure {
  margin: 0;
  background: #fff;
}

.gallery-section img {
  aspect-ratio: 4 / 5;
  height: auto;
  object-fit: cover;
}

.gallery-section figcaption {
  padding: 16px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.seo-section {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.seo-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(24px, 5vw, 72px);
  max-width: 1060px;
}

.seo-columns p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 18px;
}

.faq-section {
  background: #fff;
}

.faq-list {
  display: grid;
  gap: 14px;
  max-width: 980px;
}

.faq-list details {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 22px 24px;
}

.faq-list summary {
  cursor: pointer;
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 22px;
  line-height: 1.25;
}

.faq-list p {
  margin: 16px 0 0;
  color: var(--muted);
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(300px, 0.88fr) minmax(320px, 0.72fr);
  gap: clamp(32px, 7vw, 92px);
  align-items: center;
  background:
    linear-gradient(90deg, rgba(251, 250, 246, 0.96), rgba(251, 250, 246, 0.86)),
    url("https://images.unsplash.com/photo-1544787219-7f47ccb76574?auto=format&fit=crop&w=1800&q=85") center / cover;
}

.contact-card {
  padding: clamp(28px, 5vw, 46px);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.contact-card span {
  display: block;
  margin-bottom: 10px;
  color: var(--champagne);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.contact-card a {
  display: inline-block;
  max-width: 100%;
  overflow-wrap: anywhere;
  color: var(--leaf);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(25px, 3vw, 36px);
  line-height: 1.16;
}

.contact-card p {
  margin-top: 22px;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  padding: 28px clamp(20px, 6vw, 92px);
  background: #101914;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--champagne);
}

@media (max-width: 920px) {
  .site-header {
    height: auto;
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .nav-links {
    display: none;
  }

  .brand {
    min-width: 0;
  }

  .intro,
  .split-section,
  .origin-section,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .image-panel {
    min-height: 420px;
  }

  .supply-grid,
  .gallery-section,
  .seo-columns {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .site-header {
    gap: 12px;
  }

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

  .brand small,
  .header-cta {
    font-size: 10px;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .header-cta {
    min-height: 38px;
    padding: 0 12px;
  }

  .hero {
    min-height: 100vh;
  }

  .hero-content {
    padding-top: 132px;
    padding-bottom: 42px;
  }

  h1 {
    font-size: 42px;
  }

  h2 {
    font-size: 34px;
  }

  .hero-actions {
    margin-bottom: 36px;
  }

  .primary-button,
  .secondary-button {
    width: 100%;
  }

  .hero-facts,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .hero-facts div {
    padding-top: 16px;
  }

  .origin-stats div {
    grid-template-columns: 1fr;
  }
}