:root {
  color-scheme: dark;
  --bg: #020617;
  --panel: #0b1220;
  --line: rgba(255, 255, 255, 0.08);
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #67e8f9;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
header.site, footer.site {
  border-bottom: 1px solid var(--line);
  background: rgba(2, 6, 23, 0.85);
  backdrop-filter: blur(8px);
}
footer.site { border-top: 1px solid var(--line); border-bottom: none; margin-top: 64px; }
.bar {
  max-width: 960px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
}
.bar .brand { display: flex; align-items: center; gap: 12px; }
.bar .mark {
  width: 36px; height: 36px;
  border-radius: 12px;
  border: 1px solid rgba(34, 211, 238, 0.35);
  background: rgba(34, 211, 238, 0.08);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 13px;
}
.bar nav a { color: var(--muted); margin-left: 22px; }
.bar nav a:hover { color: var(--text); }
main.article {
  max-width: 760px;
  margin: 0 auto;
  padding: 56px 24px 32px;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 12px;
  color: var(--accent);
}
h1 {
  font-size: 44px;
  line-height: 1.15;
  margin: 12px 0 16px;
  letter-spacing: -0.01em;
}
.meta { color: var(--muted); font-size: 14px; }
h2 { font-size: 26px; margin-top: 48px; }
h3 { font-size: 19px; margin-top: 32px; }
p, li { font-size: 17px; color: var(--text); }
ul, ol { padding-left: 22px; }
li { margin: 6px 0; }
blockquote {
  border-left: 3px solid var(--accent);
  margin: 24px 0;
  padding: 6px 0 6px 18px;
  color: var(--muted);
  font-style: italic;
}
code { background: var(--panel); padding: 2px 6px; border-radius: 6px; font-size: 90%; }
.cta {
  display: inline-block;
  margin-top: 12px;
  padding: 12px 22px;
  border-radius: 999px;
  background: var(--accent);
  color: #020617;
  font-weight: 600;
}
.posts { list-style: none; padding: 0; }
.posts li {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
  margin-bottom: 16px;
  background: rgba(255,255,255,0.02);
}
.posts h2 { margin: 0 0 8px; font-size: 22px; }
.posts p { margin: 0; color: var(--muted); }

.related { border-top: 1px solid var(--line); margin-top: 56px; padding-top: 28px; }
.related h3 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.2em; color: var(--accent); margin: 0 0 18px; }
.related ul { list-style: none; padding: 0; margin: 0; }
.related li { border-top: 1px solid var(--line); padding: 14px 0; }
.related li:first-child { border-top: 0; }
.related a { color: var(--text); font-weight: 500; font-size: 16px; }
.related a:hover { color: var(--accent); text-decoration: none; }
.related .rel-desc { display: block; color: var(--muted); font-size: 14px; margin-top: 4px; font-weight: 400; }