:root {
  color-scheme: light;
  --ink: #122b43;
  --ink-soft: #3f566b;
  --muted: #718091;
  --paper: #f4f6f5;
  --surface: #ffffff;
  --line: #d8e0e2;
  --navy: #102a42;
  --teal: #138b86;
  --teal-soft: #d9efeb;
  --orange: #c97828;
  --orange-soft: #f8e5cf;
  --radius: 8px;
  --page: min(1180px, calc(100% - 96px));
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

.page-width { width: var(--page); margin-inline: auto; }

.site-header {
  position: absolute;
  z-index: 2;
  top: 0;
  left: 50%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: var(--page);
  min-height: 88px;
  transform: translateX(-50%);
  color: #f4f7f8;
}

.wordmark { display: inline-flex; align-items: center; gap: 12px; }
.wordmark-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: var(--navy);
  background: #e5f0ef;
  border-radius: 5px;
  font-size: 18px;
  font-weight: 800;
}
.wordmark strong, .wordmark small { display: block; line-height: 1.1; }
.wordmark strong { font-size: 15px; letter-spacing: .08em; }
.wordmark small { margin-top: 5px; color: #aebfca; font-size: 11px; }

.site-nav { display: flex; align-items: center; gap: 28px; font-size: 14px; }
.site-nav a { color: #d3dfe4; transition: color 180ms ease; }
.site-nav a:hover, .site-nav a:focus-visible { color: #fff; }
.site-nav .nav-action {
  padding: 8px 14px;
  color: #d8f4ee;
  border: 1px solid #4c8e8a;
  border-radius: 5px;
}
.menu-toggle { display: none; }

.hero {
  position: relative;
  min-height: 720px;
  overflow: hidden;
  color: #f7fbfc;
  background: var(--navy);
}
.hero::after {
  position: absolute;
  inset: 0;
  background: rgba(16, 42, 66, .79);
  content: "";
}
.hero-visual { position: absolute; inset: 88px -8% 0 28%; overflow: hidden; opacity: .55; }
.hero-visual img { width: 100%; height: 100%; object-fit: cover; object-position: center top; mix-blend-mode: screen; opacity: .24; }
.hero-content { position: relative; z-index: 1; padding-top: 198px; }
.eyebrow, .section-label {
  margin: 0 0 18px;
  color: var(--teal-soft);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  line-height: 1.2;
}
.hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: 64px;
  font-weight: 760;
  letter-spacing: 0;
  line-height: 1.12;
  text-wrap: balance;
}
.hero h1 em { color: #9edcd3; font-style: normal; }
.hero-lede { max-width: 570px; margin: 28px 0 0; color: #d4e0e5; font-size: 19px; line-height: 1.75; }
.hero-actions { display: flex; align-items: center; gap: 24px; margin-top: 38px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 12px; min-height: 44px; padding: 0 18px; border-radius: 5px; font-weight: 700; }
.button-primary { color: var(--navy); background: #d8f1ec; }
.button-primary:hover, .button-primary:focus-visible { background: #fff; }
.text-link { color: #d8e9ec; font-weight: 600; }
.text-link::after { display: inline-block; width: 20px; height: 1px; margin-left: 10px; vertical-align: middle; background: #82aaa9; content: ""; }
.hero-facts { display: flex; gap: 0; max-width: 720px; margin: 90px 0 0; border-top: 1px solid rgba(213, 231, 234, .35); }
.hero-facts div { min-width: 180px; padding: 18px 28px 0 0; }
.hero-facts dt { color: #9cb1bb; font-size: 12px; }
.hero-facts dd { margin: 5px 0 0; color: #f6fbfb; font-size: 15px; font-weight: 650; }

.intro { display: grid; grid-template-columns: 220px 1fr; gap: 52px; padding-top: 132px; padding-bottom: 140px; }
.intro .section-label, .section-label { color: var(--teal); }
.intro-copy { max-width: 830px; }
h2 { margin: 0; font-size: 42px; font-weight: 730; letter-spacing: 0; line-height: 1.2; text-wrap: balance; }
.intro-copy p { max-width: 690px; margin: 28px 0 0; color: var(--ink-soft); font-size: 18px; }

.capabilities { padding-bottom: 146px; }
.section-heading { max-width: 760px; }
.section-heading h2 { max-width: 720px; }
.capability-list { margin-top: 56px; border-top: 1px solid var(--line); }
.capability-row { display: grid; grid-template-columns: 96px 270px minmax(0, 1fr); gap: 28px; align-items: start; padding: 28px 0; border-bottom: 1px solid var(--line); }
.capability-index { color: var(--orange); font-size: 14px; font-weight: 750; }
.capability-title h3 { margin: 0; font-size: 21px; line-height: 1.3; }
.capability-title span { display: block; margin-top: 8px; color: var(--muted); font-size: 12px; letter-spacing: .06em; }
.capability-row p { max-width: 560px; margin: 0; color: var(--ink-soft); }

.workflow-band { padding: 120px 0; color: #eef7f6; background: #17394e; }
.workflow-grid { display: grid; grid-template-columns: minmax(0, .75fr) minmax(0, 1.25fr); gap: 80px; align-items: center; }
.workflow-copy .section-label { color: #9edcd3; }
.workflow-copy h2 { max-width: 480px; }
.workflow-copy p { max-width: 500px; margin: 26px 0 0; color: #c9d9de; font-size: 17px; }
.workflow-note { display: flex; align-items: flex-start; gap: 10px; max-width: 470px; margin-top: 32px; padding-top: 18px; color: #b4d7d5; border-top: 1px solid rgba(211, 234, 232, .25); font-size: 13px; }
.signal-dot { flex: 0 0 auto; width: 9px; height: 9px; margin-top: 7px; background: #f1ad62; border-radius: 50%; }
.workflow-figure, .architecture-figure { margin: 0; }
.workflow-figure img { width: 100%; border: 1px solid rgba(218, 238, 236, .5); }
figcaption { margin-top: 12px; color: var(--muted); font-size: 12px; }
.workflow-figure figcaption { color: #aac0c6; }

.architecture { padding-top: 146px; padding-bottom: 150px; }
.architecture-heading { display: grid; grid-template-columns: 220px 1fr; column-gap: 52px; max-width: 100%; }
.architecture-heading .section-label { grid-row: span 2; }
.architecture-heading p { max-width: 680px; margin: 24px 0 0; color: var(--ink-soft); font-size: 17px; }
.architecture-figure { margin-top: 62px; }
.architecture-figure img { width: 100%; background: #fff; border: 1px solid var(--line); }

.boundary { padding-bottom: 144px; }
.boundary > h2 { max-width: 650px; }
.boundary-grid { display: grid; grid-template-columns: 1fr 40px 1fr 40px 1fr; gap: 18px; align-items: center; margin-top: 56px; }
.boundary-column { min-height: 178px; padding: 24px 26px; border-top: 4px solid var(--teal); background: var(--surface); }
.boundary-cloud { border-top-color: var(--orange); }
.boundary-local { border-top-color: #607ba0; }
.boundary-kicker { color: var(--muted); font-size: 12px; font-weight: 700; letter-spacing: .12em; }
.boundary-column h3 { margin: 12px 0 8px; font-size: 21px; }
.boundary-column p { margin: 0; color: var(--ink-soft); font-size: 14px; }
.boundary-arrow { color: var(--orange); font-size: 28px; text-align: center; }

.contact-band { color: #f2faf8; background: var(--teal); }
.contact-inner { display: grid; grid-template-columns: 1.15fr .85fr; gap: 80px; align-items: end; padding-top: 78px; padding-bottom: 82px; }
.contact-inner .section-label { color: #d4f3ed; }
.contact-inner h2 { max-width: 650px; }
.contact-inner p { max-width: 330px; margin: 0; color: #d8efeb; font-size: 16px; }

.site-footer { display: flex; justify-content: space-between; gap: 24px; padding-top: 30px; padding-bottom: 34px; color: var(--muted); font-size: 12px; }
.footer-brand, .footer-meta { display: flex; gap: 16px; align-items: center; }
.footer-brand strong { color: var(--ink); letter-spacing: .08em; }

:focus-visible { outline: 3px solid rgba(19, 139, 134, .42); outline-offset: 4px; }

@media (max-width: 860px) {
  :root { --page: min(100% - 44px, 680px); }
  .site-header { min-height: 76px; }
  .menu-toggle { display: inline-flex; padding: 8px 0; color: #e4f1f0; background: none; border: 0; font-weight: 700; }
  .site-nav { position: absolute; top: 70px; right: 0; display: none; flex-direction: column; align-items: stretch; gap: 0; min-width: 190px; padding: 8px; background: #17394e; border: 1px solid rgba(223, 241, 239, .25); }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 10px 12px; }
  .site-nav .nav-action { margin-top: 5px; text-align: center; }
  .hero { min-height: 690px; }
  .hero-visual { inset: 180px -24% 0 8%; }
  .hero-content { padding-top: 158px; }
  .hero h1 { font-size: 48px; }
  .hero-lede { font-size: 17px; }
  .hero-facts { margin-top: 66px; }
  .hero-facts div { min-width: 0; flex: 1; padding-right: 12px; }
  h2 { font-size: 34px; }
  .intro, .architecture-heading { grid-template-columns: 1fr; gap: 24px; }
  .intro { padding-top: 90px; padding-bottom: 100px; }
  .capabilities { padding-bottom: 100px; }
  .capability-row { grid-template-columns: 54px 1fr; gap: 10px 18px; }
  .capability-row p { grid-column: 2; }
  .workflow-grid { grid-template-columns: 1fr; gap: 50px; }
  .workflow-band { padding: 90px 0; }
  .architecture { padding-top: 100px; padding-bottom: 100px; }
  .architecture-heading .section-label { grid-row: auto; }
  .boundary { padding-bottom: 100px; }
  .boundary-grid { grid-template-columns: 1fr; gap: 12px; }
  .boundary-arrow { transform: rotate(90deg); }
  .boundary-column { min-height: auto; }
  .contact-inner { grid-template-columns: 1fr; gap: 26px; padding-top: 64px; padding-bottom: 66px; }
  .site-footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}