:root {
  --ground: #0a0a0a;
  --ink: #ededed;
  --ink-muted: #8a8a8a;
  --hairline: #2a2a2a;
  --accent: #ededed;
  --max: 720px;
  --font-display: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

a { color: var(--ink); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding: 24px max(16px, env(safe-area-inset-left)) 24px max(16px, env(safe-area-inset-right));
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
  border-bottom: 1px solid var(--hairline);
}

.brand {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.site-nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 13px;
}

.nav-link {
  color: var(--ink-muted);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color 120ms, border-color 120ms;
}

.nav-link:hover { color: var(--ink); }
.nav-link.active { color: var(--ink); border-bottom-color: var(--ink); }

.prose {
  flex: 1;
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
  padding: 48px max(16px, env(safe-area-inset-left)) 64px max(16px, env(safe-area-inset-right));
}

.prose h1, .prose h2, .prose h3, .prose h4 {
  font-family: var(--font-display);
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin: 1.6em 0 0.6em;
}

.prose h1 { font-size: 32px; font-weight: 600; margin-top: 0; letter-spacing: -0.02em; }
.prose h2 { font-size: 22px; font-weight: 600; margin-top: 2em; }
.prose h3 { font-size: 18px; font-weight: 600; }
.prose h4 { font-size: 15px; font-weight: 600; color: var(--ink-muted); text-transform: uppercase; letter-spacing: 0.06em; }

.prose p { margin: 1em 0; }

.prose ul, .prose ol { padding-left: 22px; }
.prose li { margin: 0.4em 0; }

.prose hr {
  border: 0;
  border-top: 1px solid var(--hairline);
  margin: 2em 0;
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.95em;
  background: rgba(255,255,255,0.06);
  padding: 1px 5px;
  border-radius: 3px;
}

.prose pre {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--hairline);
  padding: 16px;
  overflow-x: auto;
  border-radius: 4px;
  font-size: 13px;
  line-height: 1.55;
}
.prose pre code { background: transparent; padding: 0; }

.prose blockquote {
  border-left: 2px solid var(--hairline);
  margin: 1em 0;
  padding: 0 0 0 16px;
  color: var(--ink-muted);
}

.prose table {
  border-collapse: collapse;
  margin: 1em 0;
  font-size: 13px;
  width: 100%;
}
.prose th, .prose td {
  border: 1px solid var(--hairline);
  padding: 8px 12px;
  text-align: left;
  vertical-align: top;
}
.prose th { background: rgba(255,255,255,0.04); font-weight: 600; }

.prose img { max-width: 100%; height: auto; }

.site-footer {
  padding: 24px max(16px, env(safe-area-inset-left));
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
  border-top: 1px solid var(--hairline);
  font-size: 12px;
  color: var(--ink-muted);
}
.site-footer p { margin: 0; }
.site-footer a { color: inherit; }