:root {
  --surface-base: #08090a;
  --surface-panel: #0f1011;
  --surface-elevated: #191a1b;
  --surface-hover: #28282c;
  --text-primary: #f7f8f8;
  --text-secondary: #d0d6e0;
  --text-muted: #8a8f98;
  --border-subtle: rgba(255,255,255,0.05);
  --border-default: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.16);
  --tint-topbar: rgba(8,9,10,0.88);
  --tint-control-hover: rgba(255,255,255,0.07);
  --tint-quiet: rgba(255,255,255,0.02);
  --accent-hover: #828fff;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  color-scheme: dark;
  font-family: "SF Pro Display", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100dvh;
  background: var(--surface-base);
  color: var(--text-primary);
}

a {
  color: inherit;
}

.page {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100dvh;
}

.topbar,
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) clamp(var(--space-4), 3vw, var(--space-8));
}

.topbar {
  border-bottom: 1px solid var(--border-subtle);
  background: var(--tint-topbar);
  backdrop-filter: blur(16px);
}

.brand,
.site-nav,
.footer-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.brand {
  gap: var(--space-3);
  color: var(--text-primary);
  text-decoration: none;
}

.mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-default);
  border-radius: 8px;
  background: var(--surface-elevated);
  color: var(--accent-hover);
  flex: 0 0 auto;
}

.icon {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
}

.brand-title {
  font-size: 18px;
  font-weight: 590;
  line-height: 1.2;
}

.site-nav a,
.footer-links a {
  border-radius: 6px;
  padding: var(--space-2) var(--space-3);
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.45;
  text-decoration: none;
  transition: background 120ms ease-out, color 120ms ease-out;
}

.site-nav a:hover,
.footer-links a:hover {
  background: var(--tint-control-hover);
  color: var(--text-primary);
}

.site-nav a:focus-visible,
.footer-links a:focus-visible,
.brand:focus-visible {
  outline: 2px solid var(--accent-hover);
  outline-offset: 2px;
}

.content {
  width: min(920px, 100%);
  margin: 0 auto;
  padding: clamp(var(--space-6), 5vw, 56px) var(--space-4);
}

.eyebrow {
  margin: 0 0 var(--space-3);
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 510;
  line-height: 1.4;
}

h1 {
  margin: 0 0 var(--space-4);
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 590;
  line-height: 1.1;
  letter-spacing: 0;
}

h2 {
  margin: var(--space-8) 0 var(--space-3);
  font-size: 20px;
  font-weight: 590;
  line-height: 1.35;
  letter-spacing: 0;
}

p,
li {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.75;
}

p {
  margin: 0 0 var(--space-4);
}

ul,
ol {
  margin: 0 0 var(--space-4);
  padding-left: var(--space-6);
}

.lead {
  color: var(--text-primary);
  font-size: 18px;
}

.note {
  margin-top: var(--space-6);
  border: 1px solid var(--border-default);
  border-radius: 8px;
  padding: var(--space-4);
  background: var(--tint-quiet);
  color: var(--text-secondary);
}

.note strong {
  color: var(--text-primary);
}

.site-footer {
  border-top: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.45;
}

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