:root {
  --ink: #172033;
  --muted: #667085;
  --soft: #f6f4ef;
  --paper: #fffdfa;
  --line: #e8e2d7;
  --gold: #c69f53;
  --sage: #7ea28d;
  --blue: #5d8fcf;
  --charcoal: #242833;
  --radius: 8px;
  --max: 1180px;
}

* {
  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: 1.5;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 253, 250, 0.88);
  border-bottom: 1px solid rgba(232, 226, 215, 0.82);
  backdrop-filter: blur(18px);
}

.nav {
  max-width: var(--max);
  margin: 0 auto;
  min-height: 72px;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: 0;
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.brand span {
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  color: #3f4756;
  font-size: 14px;
}

.nav-links a {
  padding: 10px 0;
}

.nav-links a[aria-current="page"] {
  color: var(--ink);
  font-weight: 700;
}

.language-switch {
  min-width: 52px;
  text-align: center;
  font-weight: 800;
  color: #796449;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: var(--ink);
  color: white;
  font-weight: 700;
  font-size: 14px;
  white-space: nowrap;
}

.button.secondary {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
  color: var(--ink);
}

.menu-toggle span,
.menu-toggle::before,
.menu-toggle::after {
  content: "";
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
}

.hero {
  min-height: calc(100vh - 72px);
  display: grid;
  align-items: stretch;
  background: var(--soft);
}

.hero-inner {
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
  padding: 64px 28px 36px;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1.05fr);
  gap: 44px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: #796449;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 680px;
  margin-bottom: 22px;
  font-size: clamp(48px, 5.4vw, 70px);
  line-height: 1;
  letter-spacing: 0;
  text-wrap: balance;
}

html[lang="zh-CN"] h1 {
  max-width: 620px;
  font-size: clamp(42px, 4.8vw, 60px);
  line-height: 1.08;
}

html[lang="zh-CN"] .hero h1 {
  font-size: clamp(40px, 4.2vw, 54px);
  line-height: 1.12;
}

.lead {
  max-width: 650px;
  color: #4e596b;
  font-size: 21px;
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.hero-visual {
  position: relative;
  min-height: 590px;
  overflow: hidden;
  border-radius: var(--radius);
  background: #ddd4c8;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  min-height: 590px;
  object-fit: cover;
}

.hero-panel {
  position: absolute;
  left: 24px;
  right: 24px;
  bottom: 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.52);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(16px);
}

.hero-panel.four {
  grid-template-columns: repeat(4, 1fr);
}

.hero-panel.five {
  grid-template-columns: repeat(5, 1fr);
}

.hero-panel div {
  padding: 18px;
  background: rgba(255, 255, 255, 0.42);
}

.stat {
  display: block;
  color: var(--ink);
  font-size: 24px;
  font-weight: 800;
}

.label {
  display: block;
  margin-top: 4px;
  color: #4f5b69;
  font-size: 13px;
}

.section {
  padding: 88px 28px;
}

.section.soft {
  background: var(--soft);
}

.section.dark {
  background: var(--charcoal);
  color: white;
}

.inner {
  max-width: var(--max);
  margin: 0 auto;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(280px, 0.65fr);
  gap: 44px;
  align-items: end;
  margin-bottom: 42px;
}

.section-head h2 {
  margin-bottom: 0;
  font-size: clamp(38px, 4vw, 52px);
  line-height: 1.05;
  letter-spacing: 0;
  text-wrap: balance;
}

html[lang="zh-CN"] .section-head h2 {
  font-size: clamp(34px, 3.5vw, 46px);
  line-height: 1.12;
}

.section-head p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 17px;
}

.dark .section-head p,
.dark .muted {
  color: rgba(255, 255, 255, 0.72);
}

.dark .button.secondary {
  border-color: rgba(255, 255, 255, 0.78);
  color: white;
}

.dark .button.secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

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

.feature,
.product,
.audience,
.partner-step,
.contact-method {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
}

.feature {
  padding: 28px;
}

.feature h3,
.audience h3,
.partner-step h3,
.contact-method h3 {
  margin-bottom: 10px;
  font-size: 21px;
}

.feature p,
.audience p,
.partner-step p,
.contact-method p {
  margin-bottom: 0;
  color: var(--muted);
}

.icon {
  width: 38px;
  height: 38px;
  margin-bottom: 18px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent, var(--gold)) 18%, white);
  color: var(--accent, var(--gold));
  display: grid;
  place-items: center;
  font-weight: 900;
}

.split {
  display: grid;
  grid-template-columns: minmax(360px, 0.95fr) minmax(0, 1.05fr);
  gap: 48px;
  align-items: center;
}

.split-image {
  overflow: hidden;
  border-radius: var(--radius);
  background: #e9e2d6;
}

.split-image img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  background: #fbfaf7;
}

.check-list {
  display: grid;
  gap: 14px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  color: #3e4858;
}

.check-list strong,
.check-list span {
  display: block;
  grid-column: 2 / -1;
  min-width: 0;
  width: 100%;
}

.check-list strong {
  grid-row: 1;
}

.check-list span {
  grid-row: 2;
  margin-top: 3px;
  color: var(--muted);
}

.check-list li::before {
  content: "";
  grid-column: 1;
  grid-row: 1 / span 2;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  border-radius: 50%;
  background: var(--sage);
}

.page-hero {
  background: var(--soft);
  padding: 88px 28px 62px;
}

.page-hero .inner {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(280px, 0.52fr);
  gap: 44px;
  align-items: end;
}

.page-hero h1 {
  margin-bottom: 0;
  font-size: clamp(44px, 5vw, 64px);
  text-wrap: balance;
}

html[lang="zh-CN"] .page-hero h1 {
  font-size: clamp(38px, 4.2vw, 54px);
  line-height: 1.14;
}

.page-hero p {
  margin-bottom: 0;
  color: #4f5b69;
  font-size: 19px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.product {
  overflow: hidden;
}

.product img {
  width: 100%;
  aspect-ratio: 1.55 / 1;
  object-fit: contain;
  background: #fbfaf7;
  padding: 18px;
}

.product-copy {
  padding: 28px;
}

.product-copy h2 {
  margin-bottom: 10px;
  font-size: 28px;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.meta span {
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #5c6675;
  font-size: 13px;
}

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

.audience {
  padding: 28px;
}

.audience.full {
  grid-column: span 2;
}

.partner-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1fr);
  gap: 46px;
  align-items: center;
}

.partner-steps {
  display: grid;
  gap: 16px;
}

.partner-step {
  padding: 24px;
}

.partner-photo {
  border-radius: var(--radius);
  overflow: hidden;
}

.partner-photo img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 28px;
  align-items: start;
}

.contact-panel {
  padding: 32px;
  border-radius: var(--radius);
  background: var(--ink);
  color: white;
}

.contact-panel p {
  color: rgba(255, 255, 255, 0.74);
}

.contact-methods {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.contact-method {
  padding: 24px;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: white;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 34px 28px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 920px) {
  .menu-toggle {
    display: block;
  }

  .nav {
    flex-wrap: wrap;
  }

  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 0 0 18px;
  }

  body.nav-open .nav-links {
    display: flex;
  }

  .nav-actions .button.secondary {
    display: none;
  }

  html[lang="zh-CN"] h1 {
    font-size: 44px;
    line-height: 1.12;
  }

  html[lang="zh-CN"] .hero h1 {
    font-size: 42px;
  }

  .lead {
    font-size: 19px;
  }

  .section-head h2,
  .page-hero h1 {
    font-size: 42px;
    line-height: 1.08;
  }

  html[lang="zh-CN"] .section-head h2,
  html[lang="zh-CN"] .page-hero h1 {
    font-size: 38px;
    line-height: 1.16;
  }

  .hero-inner,
  .section-head,
  .split,
  .page-hero .inner,
  .partner-layout,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual,
  .hero-visual img {
    min-height: 430px;
  }

  .feature-grid,
  .audience-grid,
  .product-grid,
  .contact-methods {
    grid-template-columns: 1fr;
  }

  .audience.full {
    grid-column: auto;
  }
}

@media (max-width: 620px) {
  .nav {
    padding: 0 18px;
  }

  .nav-actions {
    display: none;
  }

  .brand span {
    font-size: 14px;
  }

  html[lang="zh-CN"] h1 {
    font-size: 36px;
    line-height: 1.16;
  }

  html[lang="zh-CN"] .hero h1 {
    font-size: 34px;
  }

  .lead {
    font-size: 18px;
    line-height: 1.58;
  }

  .section-head h2,
  .page-hero h1 {
    font-size: 34px;
    line-height: 1.16;
  }

  html[lang="zh-CN"] .section-head h2,
  html[lang="zh-CN"] .page-hero h1 {
    font-size: 32px;
    line-height: 1.2;
  }

  .page-hero p,
  .section-head p {
    font-size: 17px;
  }

  .hero-inner,
  .section,
  .page-hero {
    padding-left: 18px;
    padding-right: 18px;
  }

  .hero-panel {
    position: static;
    grid-template-columns: 1fr;
    margin: -1px 0 0;
    border-radius: 0;
  }

  .hero-panel.four {
    grid-template-columns: 1fr;
  }

  .hero-panel.five {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 0;
  }

  .hero-visual img {
    min-height: 320px;
  }

  .footer-inner {
    flex-direction: column;
    padding-left: 18px;
    padding-right: 18px;
  }
}