:root {
  color-scheme: light;
  --bg: #f7f8f5;
  --surface: #ffffff;
  --ink: #1e2428;
  --muted: #5b646b;
  --line: #d8ddd6;
  --accent: #1f6f5b;
  --accent-strong: #155243;
  --soft: #e8f2ee;
}

* {
  box-sizing: border-box;
}

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
}

body {
  margin: 0;
}

a {
  color: var(--accent-strong);
}

.site-header,
.site-footer {
  border-color: var(--line);
  border-style: solid;
  background: rgba(255, 255, 255, 0.84);
}

.site-header {
  border-width: 0 0 1px;
}

.site-footer {
  border-width: 1px 0 0;
  margin-top: 56px;
}

.header-inner,
.footer-inner,
main {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
}

.header-inner,
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 0;
}

.brand {
  font-weight: 700;
  letter-spacing: 0;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

nav a {
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}

nav a:hover {
  color: var(--ink);
}

main {
  padding: 56px 0 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: 40px;
  align-items: start;
  padding: 28px 0 44px;
}

.eyebrow {
  color: var(--accent-strong);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin: 0 0 12px;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.25;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(34px, 7vw, 56px);
  margin: 0 0 18px;
}

h2 {
  font-size: 24px;
  margin: 0 0 16px;
}

h3 {
  font-size: 18px;
  margin: 0 0 8px;
}

p {
  margin: 0 0 16px;
}

.lead {
  color: var(--muted);
  font-size: 18px;
  max-width: 680px;
}

.summary-panel {
  background: var(--soft);
  border: 1px solid #c9ded5;
  border-radius: 8px;
  padding: 20px;
}

.summary-panel dl {
  display: grid;
  gap: 14px;
  margin: 0;
}

.summary-panel dt {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.summary-panel dd {
  margin: 4px 0 0;
}

.section {
  border-top: 1px solid var(--line);
  padding: 36px 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.tile {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}

ul,
ol {
  margin: 0 0 16px;
  padding-left: 1.3em;
}

li + li {
  margin-top: 8px;
}

.doc {
  max-width: 840px;
}

.doc h1 {
  font-size: clamp(30px, 5vw, 44px);
}

.doc h2 {
  border-top: 1px solid var(--line);
  margin-top: 32px;
  padding-top: 28px;
}

.note {
  background: var(--surface);
  border-left: 4px solid var(--accent);
  padding: 14px 16px;
}

.code-box {
  background: #17211d;
  border-radius: 8px;
  color: #eaf3ef;
  overflow-wrap: anywhere;
  padding: 16px;
}

.muted {
  color: var(--muted);
}

@media (max-width: 760px) {
  .header-inner,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero,
  .grid {
    grid-template-columns: 1fr;
  }

  main {
    padding-top: 32px;
  }
}