:root {
  color-scheme: light;
  --bg: #f5f7f8;
  --surface: #ffffff;
  --text: #16202a;
  --muted: #64717d;
  --line: #dde4e8;
  --brand: #0b7285;
  --brand-dark: #074b5a;
  --accent: #d9480f;
  --shadow: 0 18px 48px rgba(21, 35, 48, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

body {
  margin: 0;
}

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

a:hover {
  text-decoration: underline;
}

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav {
  align-items: center;
  display: flex;
  gap: 24px;
  justify-content: space-between;
  margin: 0 auto;
  max-width: 1040px;
  padding: 16px 24px;
}

.brand {
  align-items: center;
  color: var(--text);
  display: inline-flex;
  font-weight: 750;
  gap: 10px;
  letter-spacing: 0;
}

.brand-mark {
  align-items: center;
  background: var(--brand);
  border-radius: 8px;
  color: #ffffff;
  display: inline-flex;
  font-size: 16px;
  font-weight: 800;
  height: 34px;
  justify-content: center;
  width: 34px;
}

.nav-links {
  align-items: center;
  display: flex;
  gap: 18px;
  font-size: 14px;
  font-weight: 650;
}

.hero {
  background: linear-gradient(135deg, #073642 0%, #0b7285 54%, #b54708 100%);
  color: #ffffff;
}

.hero-inner {
  margin: 0 auto;
  max-width: 1040px;
  padding: 72px 24px 64px;
}

.eyebrow {
  color: rgba(255, 255, 255, 0.76);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: 0.08em;
  margin: 0 0 12px;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(34px, 6vw, 64px);
  letter-spacing: 0;
  line-height: 1.05;
  margin: 0;
  max-width: 760px;
}

.hero p {
  color: rgba(255, 255, 255, 0.86);
  font-size: 18px;
  margin: 20px 0 0;
  max-width: 680px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  align-items: center;
  background: #ffffff;
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--brand-dark);
  display: inline-flex;
  font-weight: 750;
  min-height: 44px;
  padding: 10px 16px;
}

.button.secondary {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.44);
  color: #ffffff;
}

.main {
  margin: 0 auto;
  max-width: 1040px;
  padding: 42px 24px 72px;
}

.doc {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  margin: 0 auto;
  max-width: 840px;
  padding: 44px;
}

.doc-header {
  border-bottom: 1px solid var(--line);
  margin-bottom: 30px;
  padding-bottom: 24px;
}

.doc-header h1 {
  color: var(--text);
  font-size: clamp(30px, 5vw, 46px);
}

.updated {
  color: var(--muted);
  font-weight: 650;
  margin: 12px 0 0;
}

h2 {
  color: var(--brand-dark);
  font-size: 22px;
  letter-spacing: 0;
  line-height: 1.25;
  margin: 34px 0 10px;
}

p {
  margin: 0 0 14px;
}

ul {
  margin: 0 0 18px;
  padding-left: 22px;
}

li {
  margin: 8px 0;
}

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

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 28px;
}

.card h2 {
  margin-top: 0;
}

.meta {
  color: var(--muted);
  font-size: 14px;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  padding: 24px;
  text-align: center;
}

@media (max-width: 720px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .nav-links {
    flex-wrap: wrap;
  }

  .hero-inner {
    padding: 52px 20px 48px;
  }

  .main {
    padding: 28px 16px 48px;
  }

  .doc {
    padding: 28px 20px;
  }

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