:root {
  --bg: #f6f5f2;
  --surface: #ffffff;
  --ink: #1d1d1f;
  --muted: #5a5d61;
  --line: #dfe1e4;
  --accent: #1f3b55;
  --accent-soft: #eef4fb;
  --button: #0b1d2b;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.12em;
}

a:hover,
a:focus-visible {
  text-decoration-thickness: 2px;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  width: min(100% - 2rem, 52rem);
  margin: 0 auto;
}

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

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.25rem;
}

.brand {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  justify-content: flex-end;
}

.site-nav a {
  color: var(--ink);
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  text-decoration: underline;
}

main {
  padding: 2.75rem 0 3.25rem;
}

.hero,
.content-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  padding: 2rem 1.5rem;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.02);
}

.hero {
  text-align: left;
}

.hero h1,
.content-card h1,
.content-card h2 {
  line-height: 1.2;
  margin-top: 0;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: 0.5rem;
}

.lead {
  color: var(--muted);
  margin-top: 0;
  margin-bottom: 1.5rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.button {
  display: inline-block;
  padding: 0.8rem 1.1rem;
  border-radius: 0.6rem;
  text-decoration: none;
  background: var(--button);
  color: #ffffff;
  font-weight: 600;
}

.button.secondary {
  background: var(--accent-soft);
  color: var(--ink);
  border: 1px solid var(--line);
}

.content-card {
  padding: 2rem 1.5rem 1.5rem;
}

.content-card h1 {
  margin-bottom: 0.5rem;
  font-size: clamp(2rem, 4vw, 2.5rem);
}

.section-label {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.content-card h2 {
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  font-size: 1.25rem;
}

.content-card p,
.content-card li {
  color: var(--ink);
}

ul,
ol {
  margin-top: 0.5rem;
  padding-left: 1.5rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.2rem 0 2.5rem;
  background: var(--surface);
}

.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.site-footer a {
  color: var(--ink);
}

@media (max-width: 480px) {
  .site-header .container {
    align-items: flex-start;
    flex-direction: column;
    padding: 0.75rem 0;
  }

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

  .hero,
  .content-card {
    padding: 1.4rem 1rem;
  }
}