:root {
  --ink: #14211f;
  --muted: #5b6965;
  --line: #d8e2dd;
  --paper: #fbfdfb;
  --green: #0e6b57;
  --mint: #d9f1e4;
  --coral: #e65f4b;
  --yellow: #f2c94c;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Arial, "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.language-radio {
  position: fixed;
  opacity: 0;
  pointer-events: none;
}

.lang-zh {
  display: none;
}

#lang-zh:checked ~ .page .lang-en {
  display: none;
}

#lang-zh:checked ~ .page .lang-zh {
  display: inline;
}

#lang-en:checked ~ .page .language-switch label[for="lang-en"],
#lang-zh:checked ~ .page .language-switch label[for="lang-zh"] {
  color: var(--ink);
  background: var(--white);
}

.site-header {
  position: fixed;
  z-index: 10;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(20px, 5vw, 72px);
  color: var(--white);
  background: linear-gradient(180deg, rgba(20, 33, 31, .82), rgba(20, 33, 31, .08));
}

.brand,
.main-nav,
.header-actions,
.language-switch,
.hero-actions,
.product-meta,
.site-footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 700;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255, 255, 255, .55);
  border-radius: 8px;
  background: rgba(255, 255, 255, .14);
}

.main-nav {
  gap: clamp(14px, 3vw, 34px);
  font-size: 14px;
}

.header-actions {
  gap: 24px;
}

.main-nav a {
  opacity: .9;
}

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

.language-switch {
  gap: 4px;
  padding: 4px;
  border: 1px solid rgba(255, 255, 255, .46);
  border-radius: 8px;
  background: rgba(255, 255, 255, .12);
}

.language-switch label {
  min-width: 70px;
  padding: 6px 10px;
  border-radius: 6px;
  color: var(--white);
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
  text-align: center;
}

.hero {
  min-height: 88vh;
  display: grid;
  align-items: end;
  padding: 130px clamp(20px, 7vw, 96px) 72px;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(11, 34, 29, .86), rgba(11, 34, 29, .26) 62%, rgba(11, 34, 29, .2)),
    url("https://images.unsplash.com/photo-1507525428034-b723cf961d3e?auto=format&fit=crop&w=1800&q=80") center/cover;
}

.hero-content {
  max-width: 720px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--coral);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: var(--yellow);
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.12;
}

h1 {
  max-width: 680px;
  font-size: clamp(42px, 8vw, 84px);
}

h2 {
  font-size: clamp(30px, 5vw, 54px);
}

h3 {
  font-size: 22px;
}

.hero-text {
  max-width: 620px;
  margin: 22px 0 32px;
  color: rgba(255, 255, 255, .88);
  font-size: 18px;
}

.hero-actions {
  gap: 14px;
  flex-wrap: wrap;
}

.button,
button {
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
}

.button {
  display: inline-flex;
  justify-content: center;
  min-width: 136px;
  padding: 13px 20px;
}

.primary,
.inquiry-form button {
  color: var(--white);
  background: var(--coral);
}

.secondary {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, .6);
  background: rgba(255, 255, 255, .12);
}

.section {
  padding: 84px clamp(20px, 6vw, 88px);
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, .9fr);
  gap: 36px;
  align-items: center;
  background: var(--white);
}

.intro-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.intro-grid article {
  min-height: 130px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--mint);
}

.intro-grid strong {
  display: block;
  margin-bottom: 8px;
  color: var(--green);
  font-size: 32px;
  line-height: 1;
}

.intro-grid span {
  color: var(--muted);
}

.section-heading {
  max-width: 820px;
  margin-bottom: 34px;
}

.category-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.category-item {
  min-height: 420px;
  display: grid;
  grid-template-rows: 260px 1fr;
  border-radius: 8px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
}

.category-item div {
  padding: 24px;
}

.category-item p,
.product-body p,
.export-copy p,
.contact-copy p {
  margin: 12px 0 0;
  color: var(--muted);
}

.featured {
  background: #eff8f3;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.product-card {
  display: grid;
  grid-template-rows: 220px 1fr;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.product-body {
  display: grid;
  gap: 12px;
  padding: 20px;
}

.tag {
  width: fit-content;
  padding: 4px 10px;
  border-radius: 999px;
  color: var(--green);
  background: var(--mint);
  font-size: 12px;
  font-weight: 700;
}

.product-meta {
  justify-content: space-between;
  gap: 12px;
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
}

.product-meta strong {
  color: var(--coral);
  white-space: nowrap;
}

.export-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, .9fr);
  gap: 48px;
  align-items: center;
  padding: 84px clamp(20px, 6vw, 88px);
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(14, 107, 87, .94), rgba(14, 107, 87, .72)),
    url("https://images.unsplash.com/photo-1494412574643-ff11b0a5c1c3?auto=format&fit=crop&w=1600&q=80") center/cover;
}

.export-copy p {
  max-width: 640px;
  color: rgba(255, 255, 255, .86);
}

.export-band .eyebrow {
  color: var(--yellow);
}

.steps {
  display: grid;
  gap: 12px;
}

.steps div {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 74px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, .35);
  border-radius: 8px;
  background: rgba(255, 255, 255, .1);
  font-weight: 700;
}

.steps span {
  color: var(--yellow);
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, .8fr) minmax(320px, 1fr);
  gap: 44px;
  align-items: start;
  background: var(--white);
}

.inquiry-form {
  display: grid;
  gap: 16px;
}

.inquiry-form label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 13px 14px;
  color: var(--ink);
  background: var(--paper);
  font: inherit;
}

textarea {
  resize: vertical;
}

.inquiry-form button {
  min-height: 50px;
}

.site-footer {
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(20px, 6vw, 88px);
  color: rgba(255, 255, 255, .82);
  background: var(--ink);
}

@media (max-width: 980px) {
  .intro,
  .export-band,
  .contact {
    grid-template-columns: 1fr;
  }

  .category-list,
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 680px) {
  .site-header {
    position: absolute;
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .header-actions {
    width: 100%;
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .main-nav {
    width: 100%;
    justify-content: space-between;
  }

  .language-switch {
    width: 100%;
  }

  .language-switch label {
    flex: 1;
  }

  .hero {
    min-height: 88vh;
    padding-top: 214px;
  }

  .hero-text {
    font-size: 16px;
  }

  .intro-grid,
  .category-list,
  .product-grid {
    grid-template-columns: 1fr;
  }

  .intro-grid article {
    min-height: 112px;
  }

  .category-item,
  .product-card {
    grid-template-rows: 220px 1fr;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}