:root {
  color-scheme: light;
  --bg: #f8faf9;
  --surface: #ffffff;
  --text: #111827;
  --muted: #5f6b63;
  --soft: #eef2f0;
  --border: #dde5e1;
  --accent: #0f766e;
  --accent-strong: #0b5f59;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: var(--accent-strong);
  text-decoration: underline;
}

.site-header,
.site-footer,
.page {
  width: min(100% - 40px, 980px);
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 24px 0;
}

.brand {
  color: var(--text);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0;
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

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

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

.page {
  padding: 48px 0 72px;
}

.page-narrow {
  width: min(100% - 40px, 780px);
}

.hero,
.doc-header {
  margin-bottom: 42px;
}

.eyebrow,
.meta {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.92rem;
}

h1,
h2,
h3,
p {
  letter-spacing: 0;
}

h1 {
  max-width: 780px;
  margin: 0;
  font-size: 2.6rem;
  line-height: 1.06;
}

h2 {
  margin: 0 0 10px;
  font-size: 1.05rem;
  line-height: 1.35;
}

p {
  margin: 0 0 14px;
  color: var(--muted);
}

.lede {
  max-width: 680px;
  margin-top: 18px;
  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(--text);
  border-radius: 8px;
  background: var(--text);
  color: #ffffff;
  font-weight: 650;
}

.button:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  color: #ffffff;
  text-decoration: none;
}

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

.button.secondary:hover {
  background: var(--soft);
  border-color: var(--border);
  color: var(--text);
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 36px;
}

.link-card {
  min-height: 156px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.link-card h2 {
  color: var(--text);
}

.link-card p {
  margin-bottom: 18px;
}

.doc {
  max-width: 820px;
}

.doc section,
.support-section {
  padding: 26px 0;
  border-top: 1px solid var(--border);
}

.doc ul {
  margin: 0 0 14px;
  padding-left: 20px;
  color: var(--muted);
}

.doc li + li {
  margin-top: 6px;
}

.notice,
.email {
  margin: 22px 0;
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--muted);
}

.notice {
  color: var(--text);
}

details {
  padding: 18px 0;
  border-top: 1px solid var(--border);
}

details:last-of-type {
  border-bottom: 1px solid var(--border);
}

summary {
  cursor: pointer;
  color: var(--text);
  font-weight: 650;
}

details p {
  margin-top: 10px;
  margin-bottom: 0;
}

.site-footer {
  padding: 28px 0 36px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.92rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 8px;
}

.empty-state {
  min-height: 54vh;
  display: grid;
  align-content: center;
}

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

  .nav {
    flex-wrap: wrap;
    gap: 12px 16px;
  }

  .page {
    padding-top: 30px;
  }

  h1 {
    font-size: 2.1rem;
  }

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