:root {
  --detail-ink: #10272b;
  --detail-muted: #5f7071;
  --detail-line: #d9e1de;
  --detail-paper: #f7f8f5;
  --detail-soft: #edf2ee;
  --detail-white: #ffffff;
  --detail-brand: #176b60;
  --detail-dark: #173840;
  --detail-deep: #0c2931;
  --detail-content: 1840px;
}

body {
  color: var(--detail-ink);
  background: var(--detail-paper);
  font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
}

h1, h2 {
  text-wrap: balance;
  text-wrap-style: balance;
  overflow-wrap: normal;
  word-break: normal;
}

h3, p, li {
  text-wrap: pretty;
  text-wrap-style: pretty;
}

header {
  position: sticky;
  top: 0;
  z-index: 30;
  min-height: 74px;
  padding: 0 max(24px, calc((100vw - 1840px) / 2 + 24px));
  grid-template-columns: 190px minmax(0, 1fr) auto;
  gap: 24px;
  background: rgba(255, 255, 255, .97);
  border-bottom: 1px solid var(--detail-line);
  backdrop-filter: blur(16px);
}

.brand img { width: 142px; height: 44px; object-fit: contain; object-position: left center; }
.brand span { display: none; }
.nav { justify-content: center; gap: clamp(14px, 1.55vw, 25px); font-size: 14px; }
.nav a { padding: 25px 0 21px; border-bottom: 3px solid transparent; white-space: nowrap; }
.nav a:hover { color: var(--detail-brand); border-bottom-color: var(--detail-brand); }
.nav a:last-child { display: none; }
.top-cta { min-height: 48px; padding: 0 18px; color: #fff; background: var(--detail-dark); display: inline-flex; align-items: center; justify-content: center; }

.hero {
  padding: 62px 24px 58px;
  color: var(--detail-ink);
  background: var(--detail-soft);
}
.hero > div { max-width: var(--detail-content); margin: 0 auto; }
.hero h1 {
  max-width: 1120px;
  margin: 14px 0 0;
  font-family: Georgia, "Songti SC", "STSong", serif;
  font-size: clamp(42px, 4.2vw, 58px);
  font-weight: 600;
  letter-spacing: -.025em;
  line-height: 1.1;
}
.hero p:not(.eyebrow) { max-width: 920px; margin: 22px 0 0; color: #506466; font-size: 17px; }
.eyebrow { color: var(--detail-brand); font-size: 12px; font-weight: 900; letter-spacing: .14em; }
.actions { margin-top: 28px; }
.actions a { min-height: 48px; padding: 0 20px; display: inline-flex; align-items: center; justify-content: center; }
.actions a:first-child { background: var(--detail-dark); border-color: var(--detail-dark); }

section { padding: 72px 24px; }
section.alt { background: var(--detail-soft); }
.section-head,
section > .grid,
section > .list,
section > .steps,
section > .faq { max-width: var(--detail-content); margin-left: auto; margin-right: auto; }
.section-head { margin-bottom: 32px; }
.section-head h2 {
  max-width: 820px;
  margin: 8px 0 0;
  font-family: Georgia, "Songti SC", "STSong", serif;
  font-size: clamp(34px, 3.5vw, 48px);
  font-weight: 600;
  line-height: 1.18;
}
.section-head p:not(.eyebrow) { max-width: 900px; margin: 16px 0 0; color: var(--detail-muted); font-size: 16px; }

.grid { border-top: 1px solid var(--detail-line); border-left: 1px solid var(--detail-line); gap: 0; }
.card { min-height: 220px; padding: 28px; border: 0; border-right: 1px solid var(--detail-line); border-bottom: 1px solid var(--detail-line); }
.card h3 { margin: 10px 0 12px; font-size: 23px; line-height: 1.3; }
.card p, .card li { color: var(--detail-muted); }

.list { gap: 10px; }
.list li { padding: 18px 20px; border-left-color: var(--detail-brand); }

.steps { gap: 0; border-top: 1px solid var(--detail-line); border-left: 1px solid var(--detail-line); }
.step { min-height: 205px; padding: 26px; border-top: 0; border-right: 1px solid var(--detail-line); border-bottom: 1px solid var(--detail-line); }
.step b { color: var(--detail-brand); font-size: 12px; letter-spacing: .12em; }
.step h3 { margin: 18px 0 10px; font-size: 22px; }
.step p { margin: 0; color: var(--detail-muted); }

.faq { gap: 0; border-top: 1px solid var(--detail-line); border-left: 1px solid var(--detail-line); }
.faq article { min-height: 190px; padding: 28px; border: 0; border-right: 1px solid var(--detail-line); border-bottom: 1px solid var(--detail-line); }
.faq h3 { margin: 0 0 12px; font-size: 22px; }
.faq p { color: var(--detail-muted); }

.cta { max-width: none; padding: 58px max(24px, calc((100vw - var(--detail-content)) / 2)); color: #fff; background: var(--detail-dark); }
.cta h2 { max-width: 760px; font-family: Georgia, "Songti SC", "STSong", serif; font-size: clamp(32px, 3.4vw, 46px); font-weight: 600; }
.cta a { background: #fff; color: var(--detail-dark); }

footer { padding: 44px max(24px, calc((100vw - var(--detail-content)) / 2)); color: #d7e4e1; background: var(--detail-deep); }
footer p { color: #afc0bd; }
footer strong { color: #fff; }

@media (max-width: 980px) {
  header { grid-template-columns: 1fr auto; padding: 12px 22px; }
  .top-cta { grid-column: 2; grid-row: 1; }
  .nav { grid-column: 1 / -1; grid-row: 2; justify-content: flex-start; overflow-x: auto; scrollbar-width: none; }
  .nav::-webkit-scrollbar { display: none; }
  .nav a { flex: 0 0 auto; padding: 10px 0 6px; }
  .nav a:last-child { display: none; }
}

@media (max-width: 640px) {
  body { padding-bottom: 56px; }
  header { padding: 12px 16px; }
  .brand img { width: 126px; }
  .top-cta { min-height: 42px; padding: 0 13px; font-size: 13px; }
  .nav {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    overflow: visible;
    border-top: 1px solid var(--detail-line);
  }
  .nav a { display: none; padding: 9px 4px 5px; text-align: center; font-size: 12px; }
  .nav a[href="index.html"],
  .nav a[href="products.html"],
  .nav a[href="industries.html"],
  .nav a[href="resources.html"] { display: block; }
  .hero { padding: 48px 20px 50px; }
  .hero h1 { font-size: 40px; }
  .hero p:not(.eyebrow) { font-size: 16px; }
  section { padding: 58px 20px; }
  .section-head h2 { font-size: 34px; }
  .grid, .steps, .faq { grid-template-columns: 1fr; }
  .card, .step, .faq article { min-height: 0; }
  .cta { grid-template-columns: 1fr; padding: 48px 20px; }
  footer { grid-template-columns: 1fr; padding: 42px 20px 78px; }
}

.detail-mobile-contact { display: none; }
@media (max-width: 640px) {
  .detail-mobile-contact { position: fixed; left: 0; right: 0; bottom: 0; z-index: 60; display: grid; grid-template-columns: 1fr 1fr; box-shadow: 0 -8px 30px rgba(12,41,49,.14); }
  .detail-mobile-contact a { padding: 16px 10px; text-align: center; color: var(--detail-ink); background: #fff; font-weight: 900; }
  .detail-mobile-contact a:last-child { color: #fff; background: var(--detail-brand); }
}

a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid #c98843;
  outline-offset: 3px;
}