:root {
  --bg: #f6f4ef;
  --ink: #171612;
  --ink-muted: #59554d;
  --line: #d9d2c3;
  --surface: #f1ede3;
  --accent: #1f1f1c;
  --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, "Times New Roman", serif;
  --sans: "Inter", "Avenir Next", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.65;
}

main.site {
  width: min(1240px, 100%);
  margin: 0 auto;
  padding: 0 40px 80px;
}

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

.header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
  padding: 22px 0;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
  background: color-mix(in srgb, var(--bg) 90%, white 10%);
  backdrop-filter: blur(8px);
}

.brand {
  font-family: var(--serif);
  font-size: 1.45rem;
  letter-spacing: 0.01em;
}

nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 28px;
}

nav.primary-nav {
  width: 100%;
  justify-content: space-between;
  align-items: center;
  gap: 16px 28px;
}

.nav-left,
.nav-right {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 24px;
}

nav a {
  font-size: 0.77rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
  border-bottom: 1px solid transparent;
  padding: 2px 0;
}

nav a.active,
nav a:hover {
  color: var(--ink);
  border-bottom-color: color-mix(in srgb, var(--ink) 35%, transparent);
  text-decoration: none;
}

nav a.btn {
  border-radius: 999px;
  padding: 9px 16px;
  border: 1px solid color-mix(in srgb, var(--line) 85%, white 15%);
}

nav a.btn.primary {
  color: #fff;
  border-color: var(--accent);
}

nav a.btn.primary:hover {
  border-bottom-color: var(--accent);
}

section {
  padding: 72px 0;
}

.compact-section {
  padding-top: 36px;
  padding-bottom: 36px;
}

.compact-panel {
  border: 1px solid color-mix(in srgb, var(--line) 55%, transparent);
  border-radius: 14px;
  padding: 20px 22px;
  background: color-mix(in srgb, var(--bg) 90%, white 10%);
}

.compact-panel ul {
  margin: 12px 0 0;
  padding-left: 1.2rem;
}

.compact-panel li {
  margin-bottom: 8px;
}

.hero {
  padding-top: 102px;
  padding-bottom: 72px;
  max-width: 820px;
}

.eyebrow {
  margin: 0;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-muted);
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--ink);
}

h1 {
  margin-top: 28px;
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2.6rem, 6.4vw, 5.2rem);
  line-height: 0.98;
  max-width: 13ch;
}

h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.95rem, 4vw, 3.35rem);
  line-height: 1.05;
  max-width: 18ch;
}

h3 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-muted);
  margin-bottom: 14px;
}

p {
  margin: 0 0 18px;
  max-width: 68ch;
  font-size: 1.08rem;
}

.hero p { font-size: 1.12rem; }
.hero h1 + p { margin-top: 28px; }
.muted { color: var(--ink-muted); }

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.btn {
  display: inline-block;
  border: 1px solid color-mix(in srgb, var(--line) 85%, white 15%);
  border-radius: 999px;
  padding: 11px 18px;
  font-size: 0.9rem;
  transition: border-color 140ms ease, transform 140ms ease;
}

.btn:hover {
  text-decoration: none;
  border-color: color-mix(in srgb, var(--ink) 55%, var(--line));
  transform: translateY(-1px);
}

.btn.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}


.section-nav {
  position: sticky;
  top: 82px;
  z-index: 20;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 0 14px;
  margin-bottom: 20px;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 65%, transparent);
  background: color-mix(in srgb, var(--bg) 92%, white 8%);
}

.section-nav a {
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--line) 75%, transparent);
}

.start-section-nav {
  flex-wrap: nowrap;
  gap: 6px;
}

.start-section-nav a {
  font-size: 0.72rem;
  padding: 5px 8px;
  white-space: nowrap;
}

.section-nav a:hover {
  color: var(--ink);
  text-decoration: none;
  border-color: color-mix(in srgb, var(--ink) 35%, transparent);
}

.split {
  display: grid;
  grid-template-columns: minmax(240px, 40%) minmax(0, 60%);
  gap: clamp(40px, 6vw, 72px);
  align-items: start;
}

.editorial-field {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px 24px;
  margin: 32px 0;
}

.term {
  font-size: 1rem;
  line-height: 1.45;
  padding: 4px 0;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 35%, transparent);
}

.diagram {
  max-width: 860px;
  display: grid;
  gap: 14px;
  margin-bottom: 28px;
}

.layer {
  display: grid;
  grid-template-columns: minmax(120px, 180px) minmax(0, 1fr);
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 55%, transparent);
}

.docs-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.docs-tile {
  border: 1px solid color-mix(in srgb, var(--line) 45%, transparent);
  border-radius: 12px;
  padding: 30px;
  background: color-mix(in srgb, var(--bg) 92%, white 8%);
}

.use-case-flow {
  display: grid;
  gap: 72px;
}

.request-form {
  width: min(820px, 100%);
  display: grid;
  gap: 22px;
}

.request-form label {
  display: grid;
  gap: 8px;
  font-size: 0.93rem;
  color: var(--ink-muted);
}

.request-form input,
.request-form select,
.request-form textarea,
.request-form button {
  font: inherit;
}

.request-form input,
.request-form select,
.request-form textarea {
  border: 1px solid color-mix(in srgb, var(--line) 88%, white 12%);
  border-radius: 10px;
  padding: 12px 14px;
  background: #fff;
  color: var(--ink);
}

.request-form textarea { min-height: 130px; }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
thead th {
  text-align: left;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  padding: 0.75rem 0.6rem;
  border-bottom: 1px solid var(--line);
}
td { padding: 0.85rem 0.6rem; vertical-align: top; border-bottom: 1px solid color-mix(in srgb, var(--line) 60%, transparent); }
code { font-size: 0.86em; white-space: pre-wrap; overflow-wrap: anywhere; }

.footer {
  margin-top: 96px;
  border-top: 1px solid color-mix(in srgb, var(--line) 65%, transparent);
  padding-top: 28px;
  color: var(--ink-muted);
}

.footer-top,
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
}

.footer-bottom {
  margin-top: 24px;
  padding-top: 14px;
  border-top: 1px solid color-mix(in srgb, var(--line) 45%, transparent);
}

.footer-brand {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.12rem;
  color: var(--ink);
}

.footer-tagline {
  margin: 4px 0 0;
  font-size: 0.9rem;
}

.footer-nav,
.footer-legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 22px;
}

.footer-nav a,
.footer-legal a,
.footer-email {
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

@media (max-width: 1100px) {
  .start-section-nav {
    overflow-x: auto;
    scrollbar-width: thin;
    padding-bottom: 10px;
  }

  .start-section-nav::-webkit-scrollbar {
    height: 6px;
  }

  .start-section-nav::-webkit-scrollbar-thumb {
    background: color-mix(in srgb, var(--line) 80%, var(--ink) 20%);
    border-radius: 999px;
  }
}

@media (max-width: 1023px) {
  main.site { padding: 0 30px 72px; }
  section { padding: 64px 0; }
  .hero { padding-top: 84px; padding-bottom: 66px; }
  h1 { font-size: clamp(2.45rem, 7.6vw, 4rem); }
  h2 { font-size: clamp(1.9rem, 5vw, 2.75rem); }
  .split { grid-template-columns: 1fr; gap: 30px; }
  .editorial-field { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 767px) {
  main.site { padding: 0 22px 56px; }
  .header {
    position: static;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 18px 0;
  }
  nav { justify-content: flex-start; gap: 7px 16px; }
  nav a { font-size: 0.72rem; }
  .section-nav {
    position: static;
    padding: 8px 0 4px;
    margin-bottom: 8px;
    background: transparent;
  }
  .start-section-nav {
    overflow-x: auto;
    padding-bottom: 8px;
  }
  .section-nav a {
    font-size: 0.68rem;
    padding: 5px 8px;
  }
  .start-section-nav a {
    font-size: 0.67rem;
  }
  section { padding: 46px 0; }
  .hero { padding-top: 56px; padding-bottom: 48px; }
  h1 { font-size: clamp(2.2rem, 12vw, 2.95rem); max-width: 14ch; }
  h2 { font-size: clamp(1.78rem, 9vw, 2.18rem); }
  p, .hero p { font-size: 1rem; margin-bottom: 20px; }
  .editorial-field,
  .docs-grid { grid-template-columns: 1fr; }
  .cta-row .btn { width: 100%; text-align: center; }
  .footer-top,
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .footer-nav,
  .footer-legal {
    justify-content: flex-start;
    gap: 8px 16px;
  }
  thead { display: none; }
  tr { display: grid; gap: 0.22rem; padding: 0.5rem 0; border-bottom: 1px solid color-mix(in srgb, var(--line) 60%, transparent); }
  td { border: none; padding: 0.1rem 0; }
}