:root {
  color-scheme: light;
  --ink: #17212b;
  --muted: #617080;
  --line: #dfe5ea;
  --paper: #ffffff;
  --soft: #f5f7f8;
  --brand: #1f7a67;
  --brand-dark: #155746;
  --amber: #f5a524;
  --coral: #ef6a4d;
  --blue: #3d6ed8;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.header-inner,
.section-inner,
.footer-inner,
.hero-inner {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.header-inner {
  display: flex;
  min-height: 68px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-size: 18px;
  font-weight: 700;
}

.brand span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav a {
  border-radius: 999px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1;
  padding: 10px 12px;
  white-space: nowrap;
}

.site-nav a:hover {
  background: var(--soft);
  color: var(--ink);
}

.hero {
  background:
    linear-gradient(90deg, rgba(31, 122, 103, 0.08) 1px, transparent 1px),
    linear-gradient(180deg, rgba(31, 122, 103, 0.08) 1px, transparent 1px),
    #fbfcfc;
  background-size: 44px 44px;
  border-bottom: 1px solid var(--line);
  padding: 76px 0 70px;
}

.hero-inner {
  max-width: 860px;
  text-align: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--brand);
  font-size: 14px;
  font-weight: 700;
}

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

h1 {
  margin-bottom: 20px;
  font-size: 48px;
  line-height: 1.14;
  font-weight: 800;
}

.hero-copy {
  margin: 0 auto;
  max-width: 720px;
  color: var(--muted);
  font-size: 19px;
}

.product-logo {
  border-radius: 18px;
  box-shadow: 0 10px 22px rgba(23, 33, 43, 0.1);
}

.section {
  padding: 58px 0;
}

.product-section {
  background: #fff;
}

.section-heading {
  max-width: 720px;
}

.section-heading h2 {
  margin-bottom: 28px;
  font-size: 34px;
  line-height: 1.2;
}

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

.product-card {
  display: flex;
  flex-direction: column;
  min-height: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  padding: 24px;
}

.product-logo {
  margin-bottom: 24px;
}

.product-content h3 {
  margin-bottom: 14px;
  font-size: 24px;
  line-height: 1.25;
}

.product-content p:last-child {
  margin-bottom: 0;
  color: var(--muted);
}

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

.company-layout {
  display: grid;
  grid-template-columns: minmax(220px, 0.78fr) minmax(0, 1.22fr);
  gap: 48px;
  align-items: start;
}

.company-list {
  margin: 0;
  border-top: 1px solid #ccd6dc;
}

.company-list div {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 22px;
  border-bottom: 1px solid #ccd6dc;
  padding: 22px 0;
}

.company-list dt {
  color: var(--muted);
  font-weight: 700;
}

.company-list dd {
  margin: 0;
  font-weight: 700;
}

.site-footer {
  background: #17212b;
  color: #fff;
}

.footer-inner {
  display: flex;
  min-height: 88px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-inner p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
}

.footer-inner a {
  color: #fff;
  font-weight: 700;
}

.footer-inner a:hover {
  text-decoration: underline;
}

@media (max-width: 860px) {
  .header-inner,
  .section-inner,
  .footer-inner,
  .hero-inner {
    width: min(100% - 28px, 1120px);
  }

  .header-inner {
    min-height: 64px;
  }

  .brand {
    font-size: 16px;
  }

  .site-nav {
    gap: 2px;
  }

  .site-nav a {
    font-size: 14px;
    padding: 9px 8px;
  }

  .hero {
    padding: 54px 0 50px;
  }

  h1 {
    font-size: 34px;
  }

  .hero-copy {
    font-size: 17px;
  }

  .product-grid,
  .company-layout {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 44px 0;
  }

  .section-heading h2 {
    font-size: 28px;
  }

  .product-card {
    min-height: 0;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 22px 0;
  }
}

@media (max-width: 460px) {
  .header-inner {
    gap: 10px;
  }

  .brand {
    gap: 8px;
  }

  .brand span {
    max-width: 82px;
  }

  .site-nav a {
    padding-right: 6px;
    padding-left: 6px;
  }

  .company-list div {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}