:root {
  --color-bg: #f7f7fa;
  --color-surface: #ffffff;
  --color-text: #1f2430;
  --color-text-muted: #5a6072;
  --color-accent: #2f6fed;
  --color-border: #e4e6ec;
  --max-width: 760px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

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

.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

.logo-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.logo-page img {
  max-width: 260px;
  width: 60vw;
  height: auto;
}

header.doc-header {
  margin-bottom: 2rem;
}

header.doc-header .logo-link {
  display: inline-block;
  margin-bottom: 1.5rem;
}

header.doc-header img {
  height: 40px;
  width: auto;
}

h1 {
  font-size: 1.75rem;
  margin: 0 0 0.25rem;
}

.updated-at {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin: 0 0 2rem;
}

h2 {
  font-size: 1.15rem;
  margin: 2rem 0 0.5rem;
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
}

section:first-of-type h2 {
  border-top: none;
  padding-top: 0;
}

p, li {
  color: var(--color-text);
}

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

a:hover {
  text-decoration: underline;
}

.back-link {
  display: inline-block;
  margin-top: 2.5rem;
  font-size: 0.95rem;
}

footer.site-footer {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.85rem;
}