:root {
  color-scheme: light;
  --ink: #111827;
  --muted: #4b5563;
  --navy: #0f172a;
  --blue: #1d4ed8;
  --blue-dark: #173ea6;
  --surface: #ffffff;
  --background: #f6f8fc;
  --border: #d7deea;
  --focus: #f59e0b;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.6;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--background);
}

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

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -5rem;
  z-index: 10;
  padding: 0.65rem 0.9rem;
  color: #fff;
  background: var(--navy);
}

.skip-link:focus { top: 1rem; }

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.nav-wrap,
.page,
.footer-wrap {
  width: min(100% - 2rem, 70rem);
  margin-inline: auto;
}

.nav-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding-block: 1rem;
}

.brand {
  color: var(--navy);
  font-size: 1.2rem;
  font-weight: 750;
  text-decoration: none;
}

nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

nav a { font-weight: 620; }
nav a[aria-current="page"] { color: var(--ink); text-decoration-thickness: 0.16em; }

.page { padding-block: 2.5rem 4rem; }
.page-narrow { max-width: 52rem; }

.hero {
  padding: 1.5rem 0 2.25rem;
}

.eyebrow {
  margin: 0 0 0.4rem;
  color: var(--blue);
  font-size: 0.82rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1, h2, h3 {
  color: var(--navy);
  line-height: 1.2;
}

h1 {
  max-width: 18ch;
  margin: 0;
  font-size: clamp(2.4rem, 9vw, 4.6rem);
  letter-spacing: -0.04em;
}

.legal h1 { font-size: clamp(2rem, 7vw, 3.4rem); }
h2 { margin-top: 2.25rem; font-size: clamp(1.45rem, 4vw, 2rem); }
h3 { margin-top: 1.5rem; font-size: 1.15rem; }

.lede {
  max-width: 46rem;
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 3vw, 1.3rem);
}

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

.button-link {
  display: inline-block;
  min-height: 2.75rem;
  padding: 0.65rem 1rem;
  border: 2px solid var(--navy);
  border-radius: 0.65rem;
  color: #fff;
  background: var(--navy);
  font-weight: 700;
  text-decoration: none;
}

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

.grid {
  display: grid;
  gap: 1rem;
}

.card {
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.9rem;
}

.card h2,
.card h3 { margin-top: 0; }
.card > :last-child { margin-bottom: 0; }

.feature-list,
.plain-list { padding-left: 1.25rem; }
.feature-list li,
.plain-list li { margin-block: 0.4rem; }

.price {
  font-size: 1.35rem;
  font-weight: 750;
}

.notice {
  margin-top: 2rem;
  padding: 1rem 1.2rem;
  border-left: 5px solid var(--blue);
  background: #eaf1ff;
}

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

details {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

summary {
  cursor: pointer;
  color: var(--navy);
  font-weight: 700;
}

details p { margin-bottom: 0; }

.site-footer {
  padding-block: 2rem;
  color: var(--muted);
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.footer-wrap { display: grid; gap: 0.7rem; }
.footer-wrap p { margin: 0; }
.footer-links { display: flex; flex-wrap: wrap; gap: 0.5rem 1rem; }

@media (min-width: 48rem) {
  .nav-wrap { flex-direction: row; align-items: center; justify-content: space-between; }
  .grid.features { grid-template-columns: repeat(3, 1fr); }
  .grid.pricing { grid-template-columns: repeat(3, 1fr); }
  .footer-wrap { grid-template-columns: 1fr auto; align-items: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}