:root {
  color-scheme: light;
  --ink: #161616;
  --muted: #5f646c;
  --line: #d8dde3;
  --paper: #f7f8f6;
  --panel: #ffffff;
  --accent: #006b5f;
  --accent-dark: #06443d;
  --blue: #264d73;
}

* {
  box-sizing: border-box;
}

html {
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
}

body {
  margin: 0;
}

a {
  color: inherit;
}

.site-header,
.site-footer {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.site-header {
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.brand {
  font-weight: 750;
  text-decoration: none;
}

nav,
.site-footer {
  display: flex;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}

nav a,
.site-footer a {
  text-decoration: none;
}

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

.hero {
  min-height: 620px;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  align-items: center;
  gap: 52px;
  padding: 64px 0 56px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  max-width: 780px;
  margin-bottom: 24px;
  font-size: clamp(44px, 6vw, 74px);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  font-size: 34px;
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-copy > p:not(.eyebrow) {
  max-width: 650px;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.6;
}

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

.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border: 1px solid var(--line);
  text-decoration: none;
  font-weight: 700;
  background: var(--panel);
}

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

.hero-visual {
  margin: 0;
}

.hero-visual img {
  width: 100%;
  display: block;
  border: 1px solid var(--line);
  background: var(--panel);
}

.hero-visual figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
}

.section {
  padding: 64px 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 26px;
}

.repo-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.repo-card {
  min-height: 190px;
  padding: 22px;
  border: 1px solid var(--line);
  background: var(--panel);
  text-decoration: none;
}

.repo-card span {
  display: block;
  margin-bottom: 24px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 750;
}

.repo-card strong {
  display: block;
  margin-bottom: 10px;
  font-size: 20px;
  overflow-wrap: anywhere;
}

.repo-card p,
.principles {
  color: var(--muted);
  line-height: 1.55;
}

.split {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 44px;
}

.principles {
  margin: 0;
  padding-left: 20px;
  font-size: 17px;
}

.principles li + li {
  margin-top: 12px;
}

.site-footer {
  padding: 28px 0 40px;
  border-top: 1px solid var(--line);
}

@media (max-width: 840px) {
  .site-header,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .hero {
    min-height: auto;
    padding-top: 46px;
  }

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

  h1 {
    font-size: 44px;
  }
}