:root {
  color-scheme: dark;
  --bg: #0b0d12;
  --panel: #111620;
  --panel2: #161d2a;
  --text: #e7edf7;
  --muted: #9ba8bb;
  --line: #273244;
  --accent: #7dd3fc;
  --accent2: #c084fc;
  --code: #0a0f18;
  --max: 920px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 17px/1.65 ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at 10% -10%, rgba(125,211,252,.13), transparent 34rem),
              radial-gradient(circle at 85% 0%, rgba(192,132,252,.10), transparent 30rem),
              var(--bg);
  color: var(--text);
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(11,13,18,.82);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.nav { max-width: var(--max); margin: 0 auto; padding: 14px 22px; display: flex; gap: 18px; align-items: center; }
.brand { font-weight: 800; letter-spacing: .02em; color: var(--text); }
.nav .spacer { flex: 1; }
.nav a { color: var(--muted); font-size: 14px; }
main { max-width: var(--max); margin: 0 auto; padding: 42px 22px 80px; }
.hero { padding: 32px 0 24px; }
h1 { font-size: clamp(34px, 5vw, 58px); line-height: 1.05; margin: 0 0 12px; letter-spacing: -.04em; }
h2 { margin-top: 46px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 29px; line-height: 1.2; letter-spacing: -.025em; }
h3 { margin-top: 32px; font-size: 22px; line-height: 1.25; }
p, li { color: #d6deea; }
.muted, .date { color: var(--muted); }
.article-list { display: grid; gap: 16px; margin-top: 26px; }
.card { display: block; padding: 22px; background: linear-gradient(180deg, rgba(22,29,42,.94), rgba(17,22,32,.94)); border: 1px solid var(--line); border-radius: 18px; box-shadow: 0 20px 50px rgba(0,0,0,.18); }
.card h2 { border: 0; padding: 0; margin: 0 0 8px; font-size: 24px; }
.card p { margin: 0 0 10px; }
.article-meta { display:flex; flex-wrap: wrap; gap: 10px; align-items:center; color: var(--muted); font-size: 14px; margin-bottom: 30px; }
.tag { border: 1px solid var(--line); border-radius: 999px; padding: 2px 9px; color: var(--muted); background: rgba(255,255,255,.03); }
.toc { background: rgba(17,22,32,.72); border: 1px solid var(--line); border-radius: 16px; padding: 18px 20px; margin: 26px 0 36px; }
.toc strong { display: block; margin-bottom: 8px; }
.toc ol { margin: 0; padding-left: 22px; columns: 2; }
@media (max-width: 720px) { .toc ol { columns: 1; } }
article { background: rgba(11,13,18,.35); }
article blockquote { margin: 22px 0; padding: 14px 18px; border-left: 3px solid var(--accent); background: rgba(125,211,252,.06); color: #dcecff; }
article code { background: var(--code); border: 1px solid #1e293b; border-radius: 6px; padding: 2px 5px; font-size: .92em; }
pre { overflow:auto; background: var(--code); border: 1px solid #1e293b; border-radius: 14px; padding: 16px; }
pre code { border: 0; padding: 0; background: transparent; }
hr { border: 0; border-top: 1px solid var(--line); margin: 36px 0; }
.footer { color: var(--muted); border-top: 1px solid var(--line); padding-top: 22px; margin-top: 54px; font-size: 14px; }