/*
 * H33 — shared site styles
 * Plain. No marketing chrome. The substance is the page.
 */

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: #fafafa;
  color: #1a1a1a;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: #0a4a8a; }
a:hover { text-decoration: underline; }

.site-header {
  background: #1a1a1a;
  color: #fafafa;
  padding: 0.75rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
}

.site-header__brand {
  font-weight: 700;
  letter-spacing: 0.05em;
  color: #fafafa;
  text-decoration: none;
}

.site-header__nav a {
  color: #c4c4c4;
  margin-left: 1.5rem;
  text-decoration: none;
}

.site-header__nav a:hover {
  color: #fafafa;
  text-decoration: underline;
}

.site-footer {
  background: #1a1a1a;
  color: #c4c4c4;
  padding: 2rem 1.5rem;
  margin-top: 4rem;
  font-size: 0.8125rem;
  text-align: center;
}

.site-footer .claim-line {
  font-weight: 600;
  color: #fafafa;
  margin: 0.5rem 0;
}

.site-footer a { color: #c4c4c4; margin: 0 0.5rem; }

.hero {
  background: #1a1a1a;
  color: #fafafa;
  padding: 5rem 2rem 3rem;
  text-align: center;
}

.hero h1 {
  font-size: 2.25rem;
  font-weight: 400;
  margin: 0;
  line-height: 1.2;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.hero h1.hero-emphasis {
  font-weight: 700;
  margin-top: 0.5rem;
}

.hero-sub {
  font-size: 1.0625rem;
  color: #c4c4c4;
  max-width: 720px;
  margin: 1.5rem auto 2rem;
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin: 1.5rem 0;
}

.cta-primary, .cta-secondary {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: 2px;
  font-size: 0.9375rem;
}

.cta-primary {
  background: #fafafa;
  color: #1a1a1a;
  border-color: #fafafa;
}

.cta-primary:hover {
  background: #d4d4d4;
  text-decoration: none;
}

.cta-secondary {
  background: transparent;
  color: #fafafa;
  border-color: #fafafa;
}

.cta-secondary:hover {
  background: rgba(255,255,255,0.08);
  text-decoration: none;
}

.hero-tagline {
  font-size: 0.8125rem;
  color: #888;
  margin: 1.5rem auto 0;
  max-width: 600px;
}

.band {
  padding: 4rem 2rem;
  max-width: 960px;
  margin: 0 auto;
}

.band-dark {
  background: #1a1a1a;
  color: #fafafa;
  max-width: none;
  padding: 4rem 2rem;
}

.band-dark a { color: #c4c4c4; }

.band-dark .band-inner {
  max-width: 960px;
  margin: 0 auto;
}

.band-light {
  background: #f0f0f0;
  max-width: none;
  padding: 4rem 2rem;
}

.band-light .band-inner {
  max-width: 960px;
  margin: 0 auto;
}

.band-quiet {
  background: #fafafa;
  padding: 2rem;
  border-top: 1px solid #ddd;
  max-width: none;
}

.band h2 {
  font-size: 1.75rem;
  font-weight: 500;
  margin: 0 0 1rem 0;
}

.band h2.emphasis {
  font-weight: 700;
  color: #0a4a8a;
}

.band-dark h2 { color: #fafafa; }

.callout {
  font-size: 1.125rem;
  font-style: italic;
  color: #c4c4c4;
  margin: 1rem 0;
  border-left: 3px solid #fafafa;
  padding-left: 1rem;
}

.use-case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.use-case {
  background: white;
  padding: 1.5rem;
  border: 1px solid #ddd;
  border-radius: 2px;
}

.use-case h3 {
  margin: 0 0 0.5rem 0;
  font-size: 1.0625rem;
}

.use-case p {
  font-size: 0.9375rem;
  color: #444;
  margin: 0;
}

.comparison {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1.5rem;
  font-size: 0.9375rem;
}

.comparison th, .comparison td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid #ddd;
}

.comparison th {
  background: #f0f0f0;
  font-weight: 600;
  font-size: 0.875rem;
}

.comparison tr:hover { background: #fafafa; }

.mechanism-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.mechanism {
  background: white;
  padding: 1.5rem;
  border: 1px solid #ddd;
  border-radius: 2px;
}

.mechanism h3 {
  margin: 0 0 0.5rem 0;
  font-size: 1rem;
}

.mechanism p {
  font-size: 0.875rem;
  color: #444;
  margin: 0;
}

.get-started-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.action-card {
  background: white;
  padding: 1.5rem;
  border: 1px solid #ddd;
  border-radius: 2px;
  display: flex;
  flex-direction: column;
}

.action-card h3 { margin: 0 0 0.5rem 0; font-size: 1.0625rem; }
.action-card p { font-size: 0.875rem; color: #444; flex: 1; }

.band-dark .action-card {
  background: #2a2a2a;
  border-color: #444;
}

.band-dark .action-card h3 { color: #fafafa; }
.band-dark .action-card p { color: #c4c4c4; }

/* Prose pages — "What Happens If H33 Disappears?" */

article.prose {
  max-width: 720px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

article.prose h1 {
  font-size: 2rem;
  font-weight: 700;
  margin: 0 0 1rem 0;
  line-height: 1.2;
}

article.prose h2 {
  font-size: 1.375rem;
  margin: 2.5rem 0 1rem 0;
  font-weight: 600;
}

article.prose h3 {
  font-size: 1.0625rem;
  margin: 1.5rem 0 0.5rem 0;
  font-weight: 700;
}

article.prose p {
  font-size: 1rem;
  margin: 0 0 1rem 0;
}

article.prose ol, article.prose ul {
  font-size: 1rem;
  padding-left: 1.5rem;
  margin: 0 0 1rem 0;
}

article.prose li {
  margin-bottom: 0.5rem;
}

.page-actions {
  margin: 2rem 0;
  padding: 1.5rem;
  background: #f0f0f0;
  border-radius: 2px;
}

.page-actions h3 {
  margin: 0 0 0.5rem 0;
  font-size: 1.0625rem;
}

.page-actions a {
  display: inline-block;
  margin-right: 1rem;
  font-weight: 600;
}

.note-quiet {
  font-style: italic;
  color: #555;
  font-size: 0.875rem;
  margin-top: 2rem;
}

#trust-card-mount {
  margin: 2rem auto;
  max-width: 840px;
  padding: 0 1.5rem;
}