:root {
  --ink: #15201d;
  --muted: #5a6762;
  --line: #dce5e1;
  --paper: #fbfcfa;
  --surface: #ffffff;
  --soft: #eef5f1;
  --teal: #165c59;
  --blue: #315f8c;
  --green: #4c7a4c;
  --amber: #a86f22;
  --shadow: 0 20px 60px rgba(21, 32, 29, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: var(--teal);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 5vw, 64px);
  background: rgba(251, 252, 250, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 760;
  letter-spacing: 0;
}

.brand:hover,
.footer-brand:hover {
  text-decoration: none;
}

.brand-mark {
  width: 24px;
  height: 24px;
  border: 2px solid var(--teal);
  border-radius: 6px;
  background:
    linear-gradient(90deg, transparent 44%, var(--teal) 44%, var(--teal) 56%, transparent 56%),
    linear-gradient(0deg, transparent 44%, var(--blue) 44%, var(--blue) 56%, transparent 56%);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
  font-size: 14px;
}

.site-nav a,
.nav-cta {
  padding: 8px 10px;
  border-radius: 8px;
  color: var(--muted);
  white-space: nowrap;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  background: var(--soft);
  color: var(--ink);
  text-decoration: none;
}

.nav-cta {
  border: 1px solid var(--line);
  color: var(--ink);
  font-weight: 650;
}

.hero,
.page-hero {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  gap: 44px;
  align-items: center;
  min-height: calc(100vh - 84px);
  padding: 72px 0;
}

.page-hero {
  padding: 82px 0 48px;
  border-bottom: 1px solid var(--line);
}

.page-hero h1,
.hero h1 {
  max-width: 880px;
  margin: 0;
  font-size: clamp(42px, 6vw, 80px);
  line-height: 0.98;
  letter-spacing: 0;
}

.page-hero h1 {
  max-width: 980px;
  font-size: clamp(38px, 5vw, 68px);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-intro,
.page-hero p:not(.eyebrow) {
  max-width: 760px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 11px 16px;
  border-radius: 8px;
  font-weight: 720;
}

.button:hover {
  text-decoration: none;
}

.button.primary {
  background: var(--teal);
  color: #fff;
}

.button.secondary {
  border: 1px solid var(--line);
  color: var(--ink);
  background: var(--surface);
}

.hero-visual {
  display: grid;
  gap: 18px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.signal-topline,
.status-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 14px;
}

.signal-topline strong,
.status-row strong {
  color: var(--ink);
}

.flow-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.flow-grid div,
.cluster-grid > *,
.use-case-grid > *,
.tool-grid > *,
.link-panel,
.source-list {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.flow-grid div {
  min-height: 132px;
  padding: 18px;
}

.flow-grid span {
  color: var(--amber);
  font-size: 13px;
  font-weight: 760;
}

.flow-grid strong,
.flow-grid small {
  display: block;
}

.flow-grid strong {
  margin-top: 14px;
  font-size: 18px;
}

.flow-grid small {
  margin-top: 6px;
  color: var(--muted);
}

.bar {
  flex: 1;
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--soft);
}

.bar i {
  display: block;
  width: 78%;
  height: 100%;
  background: linear-gradient(90deg, var(--green), var(--blue));
}

.page-shell,
.content {
  width: min(1040px, calc(100% - 40px));
  margin: 0 auto;
  padding: 56px 0 80px;
}

.content h2,
.page-shell h2 {
  margin: 56px 0 16px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.12;
  letter-spacing: 0;
}

.content h3,
.page-shell h3 {
  margin: 28px 0 10px;
  font-size: 22px;
  line-height: 1.25;
}

.content p,
.page-shell p {
  color: var(--muted);
}

.content ul,
.page-shell ul,
.content ol,
.page-shell ol {
  padding-left: 22px;
  color: var(--muted);
}

.content li + li,
.page-shell li + li {
  margin-top: 6px;
}

.lead {
  max-width: 820px;
  font-size: 20px;
}

.cluster-grid,
.use-case-grid,
.tool-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 24px 0 8px;
}

.cluster-grid > *,
.use-case-grid > *,
.tool-grid > * {
  padding: 20px;
}

.cluster-grid h3,
.use-case-grid h3,
.tool-grid h3 {
  margin-top: 0;
}

.link-panel {
  display: grid;
  gap: 12px;
  margin-top: 24px;
  padding: 22px;
  background: var(--soft);
}

.link-panel a {
  font-weight: 680;
}

.source-list {
  padding: 18px 20px;
  background: #f8faf7;
}

.matrix {
  display: grid;
  gap: 1px;
  overflow: hidden;
  margin: 24px 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.matrix > div {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 1px;
}

.matrix span,
.matrix strong {
  padding: 14px;
  background: var(--surface);
}

.matrix strong {
  color: var(--ink);
}

.callout {
  margin: 32px 0;
  padding: 24px;
  border-left: 4px solid var(--teal);
  border-radius: 8px;
  background: var(--soft);
}

.faq details {
  border-top: 1px solid var(--line);
  padding: 18px 0;
}

.faq details:last-child {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  cursor: pointer;
  color: var(--ink);
  font-weight: 720;
}

.site-footer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  padding: 40px clamp(20px, 5vw, 64px);
  border-top: 1px solid var(--line);
  background: #f6f8f5;
}

.site-footer p {
  max-width: 560px;
  color: var(--muted);
}

.footer-links {
  display: grid;
  gap: 8px;
  align-content: start;
}

@media (max-width: 920px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .cluster-grid,
  .use-case-grid,
  .tool-grid {
    grid-template-columns: 1fr;
  }

  .site-footer {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .site-nav {
    justify-content: flex-start;
  }

  .flow-grid,
  .matrix > div {
    grid-template-columns: 1fr;
  }

  .page-hero h1,
  .hero h1 {
    font-size: 40px;
  }
}