:root {
  --primary: #B3261E;
  --on-primary: #FFFFFF;
  --inverse-primary: #FFB3AE;
  --surface: #FFFBFA;
  --surface-2: #FFFFFF;
  --on-surface: #211A1A;
  --on-surface-soft: #6D5957;
  --outline: #E7DAD7;
  --accent-bg: #FFE5E2;
  --accent-border: #FFB3AE;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--surface);
  color: var(--on-surface);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
header.appbar {
  background: var(--inverse-primary);
  color: var(--on-surface);
  padding: env(safe-area-inset-top) 20px 0;
  position: sticky;
  top: 0;
  z-index: 10;
}
header.appbar .row {
  display: flex;
  align-items: center;
  height: 56px;
  gap: 12px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.1px;
}
header.appbar a.brand { color: inherit; text-decoration: none; }
.langs {
  margin-left: auto;
  display: flex;
  gap: 4px;
  font-size: 13px;
  font-weight: 600;
}
.langs a {
  color: var(--on-surface);
  text-decoration: none;
  padding: 4px 10px;
  border-radius: 999px;
  opacity: 0.7;
}
.langs a:hover { opacity: 1; }
.langs a.active {
  background: var(--primary);
  color: var(--on-primary);
  opacity: 1;
}
main {
  max-width: 780px;
  margin: 0 auto;
  padding: 24px 20px 80px;
}
h1 {
  color: var(--primary);
  font-size: 28px;
  font-weight: 700;
  margin: 4px 0 4px;
  letter-spacing: -0.2px;
}
.lead {
  color: var(--on-surface-soft);
  margin: 0 0 8px;
  font-size: 15px;
}
.stand {
  color: var(--on-surface-soft);
  font-size: 13px;
  margin-bottom: 28px;
}
h2 {
  color: var(--primary);
  font-size: 18px;
  font-weight: 700;
  margin: 36px 0 8px;
  scroll-margin-top: 80px;
}
h3 {
  font-size: 15px;
  font-weight: 700;
  margin: 18px 0 6px;
  color: var(--on-surface);
}
p { margin: 8px 0; }
ul { padding-left: 22px; margin: 8px 0; }
li { margin-bottom: 6px; }
a { color: var(--primary); }
a:hover { text-decoration: none; }
.toc {
  background: var(--surface-2);
  border: 1px solid var(--outline);
  border-radius: 12px;
  padding: 16px 20px 16px 36px;
  margin: 8px 0 28px;
  font-size: 14px;
}
.toc h3 {
  margin: 0 0 8px -16px;
  font-size: 13px;
  font-weight: 700;
  color: var(--on-surface-soft);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.toc ol { padding-left: 4px; margin: 0; }
.toc li { margin-bottom: 4px; }
.toc a { color: var(--on-surface); text-decoration: none; }
.toc a:hover { color: var(--primary); }
code {
  background: #F4ECEA;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}
.card {
  background: var(--surface-2);
  border: 1px solid var(--outline);
  border-radius: 12px;
  padding: 16px 20px;
  margin: 12px 0;
}
.card.accent {
  background: var(--accent-bg);
  border-color: var(--accent-border);
}
.btn {
  display: inline-block;
  background: var(--primary);
  color: var(--on-primary);
  padding: 10px 18px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  margin-top: 8px;
}
.btn:hover { background: #8E2018; }
footer {
  margin-top: 56px;
  padding-top: 20px;
  border-top: 1px solid var(--outline);
  font-size: 13px;
  color: var(--on-surface-soft);
  text-align: center;
}
footer a {
  color: var(--on-surface-soft);
  margin: 0 6px;
}

/* Landing-page specific */
.hero {
  text-align: center;
  padding: 24px 0 8px;
}
.hero h1 {
  font-size: 44px;
  margin: 0 0 8px;
  letter-spacing: -0.5px;
}
.hero .lead {
  font-size: 18px;
  max-width: 560px;
  margin: 0 auto 24px;
  line-height: 1.5;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin: 24px 0 8px;
}
.cta-row .btn {
  margin-top: 0;
}
.cta-row .btn.secondary {
  background: var(--surface-2);
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.cta-row .btn.secondary:hover {
  background: var(--accent-bg);
}
.features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 24px 0;
}
@media (max-width: 600px) {
  .features { grid-template-columns: 1fr; }
  .hero h1 { font-size: 34px; }
}
.feature {
  background: var(--surface-2);
  border: 1px solid var(--outline);
  border-radius: 12px;
  padding: 16px 18px;
}
.feature h3 {
  margin: 0 0 4px;
  font-size: 15px;
}
.feature p {
  margin: 0;
  font-size: 14px;
  color: var(--on-surface-soft);
}
.screens {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding: 8px 0 16px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.screens img {
  width: 220px;
  height: auto;
  border-radius: 24px;
  border: 1px solid var(--outline);
  scroll-snap-align: start;
  flex-shrink: 0;
}