:root {
  color-scheme: light;
  --bg: #f7f8fb;
  --ink: #17202a;
  --muted: #5f6977;
  --line: #d8dde6;
  --panel: #ffffff;
  --accent: #1167d8;
  --accent-dark: #0d4da3;
  --soft: #e9f1ff;
  --ok: #0a7a51;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

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

.site-header {
  background: rgba(247, 248, 251, 0.92);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  backdrop-filter: blur(14px);
}

.nav {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 15px;
}

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

.hero {
  padding: 74px 0 56px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  color: var(--accent-dark);
  font-weight: 700;
  margin: 0 0 12px;
}

h1 {
  font-size: clamp(38px, 6vw, 72px);
  line-height: 1.02;
  margin: 0;
  max-width: 880px;
}

h2 {
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1.15;
  margin: 0 0 14px;
}

h3 {
  font-size: 20px;
  margin: 0 0 8px;
}

p {
  margin: 0 0 16px;
}

.lede {
  color: var(--muted);
  font-size: 20px;
  max-width: 760px;
  margin-top: 22px;
}

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

.button {
  border: 1px solid var(--accent);
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}

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

.section {
  padding: 52px 0;
}

.grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}

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

.check {
  color: var(--ok);
  font-weight: 800;
}

.content {
  max-width: 820px;
}

.content ul,
.content ol {
  padding-left: 22px;
}

.callout {
  background: var(--soft);
  border: 1px solid #cfe0ff;
  border-radius: 8px;
  padding: 18px;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  padding: 28px 0;
  font-size: 14px;
}

@media (max-width: 640px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 0;
  }

  .hero {
    padding-top: 48px;
  }
}