:root {
  color-scheme: light;
  --bg: #f7f7f8;
  --panel: rgba(255, 255, 255, 0.82);
  --text: #111114;
  --muted: #676b75;
  --line: #e7e7ea;
  --accent: #111114;
  --accent-soft: #efeff2;
  --shadow: rgba(17, 17, 20, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 20% 0%, rgba(212, 205, 255, 0.55), transparent 32rem),
    radial-gradient(circle at 90% 10%, rgba(214, 232, 255, 0.68), transparent 30rem),
    var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

a {
  color: inherit;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 1060px;
  margin: 0 auto;
  padding: 1.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.75rem;
  background: var(--accent);
  color: white;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

nav {
  display: flex;
  gap: 0.85rem;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 600;
}

nav a {
  text-decoration: none;
}

nav a:hover,
nav a[aria-current="page"] {
  color: var(--text);
}

main {
  max-width: 1060px;
  margin: 0 auto;
  padding: 3rem 1.25rem 5rem;
}

.hero {
  max-width: 760px;
  padding: 5rem 0 4rem;
}

.eyebrow {
  margin: 0 0 0.9rem;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 780px;
  margin-bottom: 1.2rem;
  font-size: clamp(2.8rem, 8vw, 6.5rem);
  line-height: 0.96;
  letter-spacing: -0.04em;
}

h2 {
  margin-bottom: 0.65rem;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

h3 {
  margin-bottom: 0.25rem;
  font-size: 1rem;
}

.lede {
  max-width: 660px;
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.35rem);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 1rem 0;
}

.card,
.notice,
.document section {
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  background: var(--panel);
  box-shadow: 0 1rem 3rem var(--shadow);
  backdrop-filter: blur(16px);
}

.card {
  padding: 1.4rem;
}

.card p,
.notice p,
.document p,
.faq p {
  color: var(--muted);
}

.notice {
  margin-top: 1rem;
  padding: 1.6rem;
}

.document {
  max-width: 780px;
}

.document h1 {
  font-size: clamp(2.4rem, 6vw, 4.4rem);
}

.document section {
  margin-top: 1rem;
  padding: 1.45rem;
}

.updated {
  color: var(--muted);
  font-weight: 600;
}

.faq + .faq {
  margin-top: 1.2rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
}

footer {
  max-width: 1060px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  main {
    padding-top: 1.5rem;
  }

  .hero {
    padding: 3rem 0 2rem;
  }

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

}