:root {
  color-scheme: light;
  --background: #f7f5f0;
  --surface: #fffdf8;
  --text: #24211c;
  --muted: #6e665c;
  --border: #ded6c9;
  --accent: #1f6f63;
  --accent-dark: #164f47;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.75;
}

a {
  color: var(--accent-dark);
  text-underline-offset: 0.18em;
}

.site-header,
.site-footer {
  padding: 24px;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(255, 253, 248, 0.86);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 960px;
  margin: 0 auto;
  gap: 20px;
}

.brand {
  color: var(--text);
  font-size: 1.05rem;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.95rem;
}

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

.nav-links a:hover {
  color: var(--text);
}

.main {
  max-width: 960px;
  margin: 0 auto;
  padding: 56px 24px 72px;
}

.hero {
  padding: 56px;
  border: 1px solid var(--border);
  border-radius: 28px;
  background:
    radial-gradient(circle at top right, rgba(31, 111, 99, 0.13), transparent 34%),
    var(--surface);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-dark);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0 0 16px;
  line-height: 1.28;
}

h1 {
  max-width: 720px;
  font-size: clamp(2.1rem, 6vw, 4rem);
  letter-spacing: -0.04em;
}

h2 {
  margin-top: 44px;
  font-size: 1.55rem;
}

h3 {
  margin-top: 28px;
  font-size: 1.1rem;
}

p {
  margin: 0 0 16px;
}

.lead {
  max-width: 700px;
  color: var(--muted);
  font-size: 1.08rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}

.button.secondary {
  background: transparent;
  color: var(--accent-dark);
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: var(--surface);
}

.card h3 {
  margin-top: 0;
}

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

.definition-list {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 10px 18px;
  margin: 20px 0 0;
}

.definition-list dt {
  color: var(--muted);
}

.definition-list dd {
  margin: 0;
}

.content {
  max-width: 760px;
  padding: 36px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--surface);
}

.content ul {
  padding-left: 1.25rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer-inner {
  max-width: 960px;
  margin: 0 auto;
}

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

  .main {
    padding-top: 32px;
  }

  .hero {
    padding: 32px 24px;
  }

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

  .definition-list {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .content {
    padding: 24px;
  }
}