:root {
  color-scheme: light;
  --ink: #16202d;
  --muted: #5f6e82;
  --line: #c9d3df;
  --panel: #f6f8fb;
  --paper: #ffffff;
  --teal: #147c72;
  --teal-deep: #0b5f58;
  --blue: #315f96;
  --amber: #a66a16;
  --rose: #9a4255;
  --shadow: 0 18px 48px rgba(21, 32, 45, 0.1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #eef3f7;
  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-deep);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.2em;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 5vw, 64px);
  border-bottom: 1px solid rgba(201, 211, 223, 0.8);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.brand img {
  width: 34px;
  height: 34px;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px;
  font-size: 0.95rem;
}

.main-nav a {
  color: var(--muted);
  text-decoration: none;
}

.main-nav a[aria-current="page"] {
  color: var(--teal-deep);
  font-weight: 800;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
  min-height: calc(100vh - 72px);
  padding: clamp(56px, 8vw, 96px) clamp(20px, 5vw, 64px) 48px;
  background:
    linear-gradient(135deg, rgba(20, 124, 114, 0.08), rgba(49, 95, 150, 0.08)),
    var(--paper);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--teal-deep);
  font-size: 0.83rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.12;
  letter-spacing: 0;
}

h1 {
  max-width: 900px;
  font-size: clamp(2.5rem, 5.6vw, 5.8rem);
}

h2 {
  font-size: clamp(1.65rem, 3vw, 2.5rem);
}

h3 {
  font-size: 1.15rem;
}

.lead {
  max-width: 760px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(1.06rem, 1.6vw, 1.3rem);
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-weight: 800;
  text-decoration: none;
}

.button.primary {
  border-color: var(--teal);
  background: var(--teal);
  color: white;
}

.button.secondary {
  background: white;
  color: var(--ink);
}

.knowledge-map {
  display: grid;
  gap: 12px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.map-row {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 10px;
  align-items: center;
}

.map-label {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

.map-items {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: white;
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 700;
}

.pill.teal {
  border-color: rgba(20, 124, 114, 0.25);
  color: var(--teal-deep);
}

.pill.blue {
  border-color: rgba(49, 95, 150, 0.25);
  color: var(--blue);
}

.pill.amber {
  border-color: rgba(166, 106, 22, 0.25);
  color: var(--amber);
}

.section {
  padding: clamp(44px, 6vw, 76px) clamp(20px, 5vw, 64px);
  background: var(--paper);
}

.section.alt {
  background: #f5f7fa;
}

.section-header {
  max-width: 820px;
  margin-bottom: 28px;
}

.section-header p {
  color: var(--muted);
  font-size: 1.06rem;
}

.grid {
  display: grid;
  gap: 16px;
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid.seven {
  grid-template-columns: repeat(7, minmax(120px, 1fr));
}

.card,
.type-card,
.layer-card,
.template-block {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.card,
.type-card,
.layer-card {
  padding: 20px;
}

.card p,
.type-card p,
.layer-card p {
  color: var(--muted);
}

.type-card strong,
.layer-card strong {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
}

.code {
  color: var(--blue);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.92em;
}

.page {
  max-width: 1180px;
  margin: 0 auto;
  padding: 44px clamp(20px, 5vw, 64px) 80px;
}

.page-title {
  max-width: 880px;
  margin-bottom: 34px;
}

.page-title p {
  color: var(--muted);
  font-size: 1.12rem;
}

.comparison {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.callout {
  margin: 28px 0;
  padding: 20px;
  border-left: 5px solid var(--teal);
  background: #eef8f6;
}

.template-block {
  margin: 18px 0;
  overflow: hidden;
}

.template-block header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  background: #f8fafc;
}

.template-block pre {
  margin: 0;
  padding: 18px;
  overflow-x: auto;
  background: white;
  color: #233044;
  font-size: 0.92rem;
  line-height: 1.55;
  white-space: pre-wrap;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  background: #f8fafc;
  color: var(--muted);
  font-size: 0.85rem;
  text-transform: uppercase;
}

tr:last-child td {
  border-bottom: 0;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(20px, 5vw, 64px);
  border-top: 1px solid var(--line);
  background: #15202d;
  color: white;
}

.site-footer a {
  color: #b6e7df;
}

@media (max-width: 940px) {
  .hero,
  .grid.two,
  .grid.three,
  .comparison {
    grid-template-columns: 1fr;
  }

  .grid.seven {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .main-nav {
    justify-content: flex-start;
  }

  .map-row {
    grid-template-columns: 1fr;
  }

  .grid.seven {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
  }
}