:root {
  --bg: #0c0f15;
  --panel: #121722;
  --ink: #e7ecf5;
  --muted: #95a2b8;
  --line: #222a39;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Inter", "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 90% -10%, #1f2533 0%, transparent 32%),
    radial-gradient(circle at 0% 50%, #181d29 0%, transparent 38%),
    var(--bg);
}
.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(12, 15, 21, 0.9);
  position: sticky;
  top: 0;
  backdrop-filter: blur(8px);
}
.site-header-inner {
  width: min(980px, 92%);
  margin: 0 auto;
  padding: 16px 0;
}
.site-title {
  margin: 0;
  font-size: 24px;
  font-weight: 800;
}
.site-main {
  width: min(980px, 92%);
  margin: 0 auto;
  padding: 28px 0 46px;
}
.content {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(18, 23, 34, 0.92);
  padding: 20px;
  line-height: 1.65;
}
.content h1, .content h2, .content h3 {
  margin-top: 0;
}
.content a {
  color: #9eb0cc;
}
.site-footer {
  width: min(980px, 92%);
  margin: 0 auto;
  border-top: 1px solid var(--line);
  color: var(--muted);
  padding: 14px 0 28px;
  font-size: 13px;
}