:root {
  --ink: #172019;
  --muted: #667067;
  --green: #38563d;
  --green-deep: #29432e;
  --line: #dfe4df;
  --paper: #ffffff;
  --soft: #f5f7f4;
  --bronze: #9d7a48;
  --shadow: 0 18px 50px rgba(25, 44, 30, 0.09);
  --serif: "Noto Serif SC", "Songti SC", "STSong", Georgia, serif;
  --sans: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
img { display: block; max-width: 100%; }
.container { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }
.skip-link { position: fixed; top: -100px; left: 16px; z-index: 100; padding: 10px 16px; background: var(--ink); color: white; }
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 78px;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}
.nav-wrap { height: 100%; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 30px; }
.brand { display: inline-flex; align-items: baseline; gap: 10px; width: max-content; }
.brand-cn { font: 600 24px/1 var(--serif); letter-spacing: .12em; }
.brand-en { font: 500 14px/1 Georgia, serif; letter-spacing: .1em; }
.main-nav { display: flex; height: 100%; align-items: center; gap: 38px; }
.main-nav a { position: relative; display: flex; height: 100%; align-items: center; font-size: 15px; }
.main-nav a::after { content: ""; position: absolute; left: 50%; right: 50%; bottom: 0; height: 2px; background: var(--green); transition: .25s ease; }
.main-nav a:hover::after, .main-nav a.active::after { left: 0; right: 0; }
.nav-actions { justify-self: end; display: flex; align-items: center; gap: 14px; }
.search-link { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; }
.search-link:hover { background: var(--soft); }
.search-icon { width: 18px; height: 18px; border: 1.8px solid currentColor; border-radius: 50%; position: relative; }
.search-icon::after { content: ""; width: 7px; height: 1.8px; background: currentColor; position: absolute; right: -5px; bottom: -2px; transform: rotate(45deg); }
.lang-toggle { border: 0; border-left: 1px solid var(--line); background: transparent; padding: 7px 0 7px 18px; cursor: pointer; color: var(--ink); }
.mobile-toggle { display: none; border: 0; background: transparent; font-size: 25px; padding: 6px; }

.hero { position: relative; min-height: 680px; overflow: hidden; background: #eff4f0; }
.slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .75s ease, visibility .75s; }
.slide.active { opacity: 1; visibility: visible; }
.slide-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.slide::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(255,255,255,.98) 0%, rgba(255,255,255,.9) 26%, rgba(255,255,255,.25) 56%, rgba(255,255,255,0) 78%); }
.slide-content { position: relative; z-index: 2; min-height: 680px; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; max-width: 600px; }
.eyebrow { margin: 0 0 14px; color: var(--green); font-size: 13px; font-weight: 600; letter-spacing: .18em; text-transform: uppercase; }
.hero h1 { margin: 0; font: 600 clamp(48px, 5.5vw, 80px)/1.15 var(--serif); letter-spacing: .08em; }
.hero p { margin: 24px 0 32px; font-size: 20px; color: #3f4b41; }
.pack-caption { margin-top: 34px; display: flex; gap: 14px; align-items: center; color: var(--muted); font-size: 13px; letter-spacing: .12em; }
.pack-caption::before { content: ""; width: 34px; height: 1px; background: var(--bronze); }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 18px; min-height: 50px; padding: 0 25px; border: 1px solid var(--green); background: var(--green); color: white; transition: .25s ease; cursor: pointer; }
.button:hover { background: var(--green-deep); transform: translateY(-1px); }
.button.ghost { background: transparent; color: var(--green); }
.button.ghost:hover { background: var(--green); color: white; }
.hero-controls { position: absolute; z-index: 5; bottom: 28px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; }
.hero-dot { width: 10px; height: 10px; border: 0; border-radius: 50%; background: rgba(56,86,61,.35); cursor: pointer; padding: 0; }
.hero-dot.active { background: var(--green); box-shadow: 0 0 0 5px rgba(255,255,255,.65); }

.section { padding: 100px 0; }
.section.soft { background: var(--soft); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 42px; }
.section-title { margin: 0; font: 600 36px/1.25 var(--serif); letter-spacing: .06em; }
.section-title small { margin-left: 12px; font: 500 14px/1 var(--sans); letter-spacing: .14em; color: var(--muted); }
.section-note { margin: 0; color: var(--muted); font-size: 14px; }
.category-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.category-card { border: 1px solid var(--line); background: white; transition: .3s ease; overflow: hidden; }
.category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.category-photo { height: 250px; background-image: url("tea-categories.png"); background-size: 200% 200%; background-repeat: no-repeat; transition: transform .5s ease; }
.category-card:hover .category-photo { transform: scale(1.025); }
.category-photo.black { background-position: left top; }
.category-photo.green { background-position: right top; }
.category-photo.flower { background-position: left bottom; }
.category-photo.vine { background-position: right bottom; }
.category-body { min-height: 245px; padding: 26px; display: flex; flex-direction: column; }
.category-body h3 { margin: 0 0 12px; font: 600 25px/1.2 var(--serif); }
.category-body h3 small { margin-left: 8px; font: 500 11px/1 var(--sans); color: var(--muted); letter-spacing: .08em; }
.category-body p { margin: 0; color: var(--muted); font-size: 14px; }
.text-link { margin-top: auto; padding-top: 24px; color: var(--green); font-weight: 600; font-size: 14px; }

.about-home { min-height: 680px; display: grid; grid-template-columns: .9fr 1.1fr; }
.about-copy { padding: 95px max(48px, calc((100vw - 1180px) / 2)); padding-right: 70px; display: flex; flex-direction: column; justify-content: center; }
.about-image { min-height: 680px; background: url("hero-craft.png") center/cover no-repeat; }
.about-copy h2, .contact-home h2 { margin: 0 0 24px; font: 600 38px/1.35 var(--serif); }
.about-copy .lead { font-size: 21px; color: var(--green); margin: 0 0 25px; }
.facts { list-style: none; padding: 0; margin: 0 0 30px; display: grid; gap: 11px; }
.facts li { color: #4b574e; }
.facts li::before { content: ""; display: inline-block; width: 7px; height: 7px; margin-right: 12px; background: var(--green); transform: rotate(45deg); }
.stat-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 34px; }
.stat { padding: 17px 18px; border-left: 2px solid var(--green); background: white; color: var(--muted); font-size: 13px; }
.stat strong { display: block; color: var(--ink); font-size: 15px; }

.contact-home { min-height: 680px; display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 80px; }
.contact-list { display: grid; gap: 20px; margin-top: 30px; }
.contact-item { display: grid; grid-template-columns: 42px 1fr; gap: 14px; }
.contact-badge { width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; background: var(--soft); color: var(--green); font-weight: 700; }
.contact-item strong { display: block; font-size: 14px; }
.contact-item span, .contact-item a { color: var(--muted); }
.contact-panel { background: white; border: 1px solid var(--line); padding: 44px; box-shadow: var(--shadow); }
.contact-panel h3 { margin: 0 0 8px; font: 600 28px/1.3 var(--serif); }
.form-note { margin: 0 0 25px; color: var(--muted); font-size: 14px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { width: 100%; border: 1px solid var(--line); background: #fff; padding: 13px 15px; outline: none; }
.field:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(56,86,61,.09); }
textarea.field { grid-column: 1 / -1; min-height: 130px; resize: vertical; }
.form-grid .button { grid-column: 1 / -1; width: 100%; margin-top: 4px; }

.site-footer { border-top: 1px solid var(--line); background: white; padding: 38px 0; }
.footer-wrap { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 30px; }
.footer-links { display: flex; gap: 16px; align-items: center; font-size: 13px; color: var(--muted); }
.footer-links strong { color: var(--ink); }
.footer-links a:hover { color: var(--green); }
.copyright { justify-self: end; text-align: right; font-size: 12px; color: var(--muted); }

.page-hero { min-height: 380px; display: flex; align-items: center; background: linear-gradient(90deg, rgba(255,255,255,.98), rgba(255,255,255,.65)), url("hero-product.png") center 48%/cover; }
.page-hero h1 { margin: 0; font: 600 54px/1.2 var(--serif); letter-spacing: .06em; }
.page-hero p { max-width: 650px; margin: 17px 0 0; color: var(--muted); font-size: 18px; }
.breadcrumbs { margin-bottom: 20px; color: var(--muted); font-size: 13px; }
.breadcrumbs a:hover { color: var(--green); }
.product-tabs { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 38px; }
.product-tab { border: 1px solid var(--line); padding: 10px 18px; background: white; color: var(--muted); cursor: pointer; }
.product-tab.active, .product-tab:hover { background: var(--green); color: white; border-color: var(--green); }
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.product-card { border: 1px solid var(--line); padding: 30px; min-height: 285px; display: flex; flex-direction: column; background: white; transition: .25s ease; }
.product-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); border-color: transparent; }
.product-type { display: inline-block; width: max-content; padding: 4px 10px; background: var(--soft); color: var(--green); font-size: 12px; }
.product-card h2 { margin: 27px 0 10px; font: 600 25px/1.3 var(--serif); }
.product-card p { margin: 0; color: var(--muted); }
.product-card .text-link { margin-top: auto; }
.product-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.detail-visual { aspect-ratio: 1; background-image: url("tea-categories.png"); background-size: 200% 200%; border: 1px solid var(--line); }
.detail-visual.black { background-position: left top; }
.detail-visual.green { background-position: right top; }
.detail-visual.flower { background-position: left bottom; }
.detail-visual.vine { background-position: right bottom; }
.detail-copy h1 { margin: 18px 0; font: 600 48px/1.2 var(--serif); }
.detail-copy .en-name { color: var(--muted); letter-spacing: .09em; text-transform: uppercase; }
.detail-copy .description { margin: 25px 0 35px; color: var(--muted); }
.detail-list { border-top: 1px solid var(--line); margin: 0 0 35px; }
.detail-row { display: grid; grid-template-columns: 120px 1fr; padding: 14px 0; border-bottom: 1px solid var(--line); }
.detail-row span:first-child { color: var(--muted); }
.about-page-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: 70px; align-items: center; }
.about-page-photo { min-height: 560px; background: url("hero-craft.png") center/cover; }
.prose h2 { font: 600 38px/1.35 var(--serif); margin: 0 0 24px; }
.prose p { color: var(--muted); margin: 0 0 18px; }
.values-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; margin-top: 45px; }
.value-card { border-top: 2px solid var(--green); background: white; padding: 28px; }
.value-card h3 { margin: 0 0 10px; font: 600 22px/1.3 var(--serif); }
.value-card p { margin: 0; color: var(--muted); font-size: 14px; }
.empty-state { display: none; padding: 40px; text-align: center; color: var(--muted); }

@media (max-width: 920px) {
  .site-header { height: 68px; }
  .nav-wrap { grid-template-columns: 1fr auto; }
  .main-nav { position: fixed; left: 0; right: 0; top: 68px; display: none; height: auto; padding: 18px 24px 28px; background: white; border-bottom: 1px solid var(--line); flex-direction: column; align-items: stretch; gap: 0; }
  .main-nav.open { display: flex; }
  .main-nav a { height: auto; padding: 14px 0; }
  .main-nav a::after { display: none; }
  .mobile-toggle { display: block; }
  .search-link { display: none; }
  .brand-cn { font-size: 20px; }
  .brand-en { font-size: 12px; }
  .hero, .slide-content { min-height: 650px; }
  .slide-bg { object-position: 64% center; }
  .slide::after { background: linear-gradient(90deg, rgba(255,255,255,.95), rgba(255,255,255,.65) 55%, rgba(255,255,255,.1)); }
  .slide-content { max-width: 70%; }
  .category-grid { grid-template-columns: 1fr 1fr; }
  .about-home { grid-template-columns: 1fr; }
  .about-copy { padding: 75px 48px; }
  .about-image { min-height: 480px; }
  .contact-home { grid-template-columns: 1fr; gap: 45px; padding-top: 75px; padding-bottom: 75px; }
  .footer-wrap { grid-template-columns: 1fr; text-align: center; }
  .footer-wrap .brand, .footer-links { margin: 0 auto; }
  .copyright { justify-self: center; text-align: center; }
  .products-grid { grid-template-columns: 1fr 1fr; }
  .product-detail, .about-page-grid { grid-template-columns: 1fr; gap: 45px; }
}

@media (max-width: 620px) {
  .container { width: min(100% - 30px, 1180px); }
  .brand-en { display: none; }
  .lang-toggle { padding-left: 12px; font-size: 13px; }
  .hero, .slide-content { min-height: 610px; }
  .slide-bg { object-position: 70% center; }
  .slide::after { background: linear-gradient(180deg, rgba(255,255,255,.88), rgba(255,255,255,.62) 65%, rgba(255,255,255,.25)); }
  .slide-content { justify-content: flex-start; padding-top: 90px; max-width: 94%; }
  .hero h1 { font-size: 44px; }
  .hero p { font-size: 17px; margin: 16px 0 24px; }
  .section { padding: 70px 0; }
  .section-head { align-items: flex-start; flex-direction: column; margin-bottom: 28px; }
  .section-title { font-size: 31px; }
  .category-grid, .products-grid, .values-grid { grid-template-columns: 1fr; }
  .category-photo { height: 310px; }
  .category-body { min-height: auto; }
  .about-copy { padding: 70px 24px; }
  .about-image { min-height: 360px; }
  .stat-row { grid-template-columns: 1fr; }
  .contact-home { gap: 30px; }
  .contact-panel { padding: 25px 20px; }
  .form-grid { grid-template-columns: 1fr; }
  textarea.field, .form-grid .button { grid-column: auto; }
  .footer-links { flex-wrap: wrap; justify-content: center; }
  .page-hero { min-height: 330px; }
  .page-hero h1 { font-size: 42px; }
  .detail-copy h1 { font-size: 40px; }
  .about-page-photo { min-height: 390px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}