:root {
  --ink: #1a1f24;
  --muted: #5b6570;
  --bg: #f6f3ee;
  --accent: #0b6e4f;
  --line: #ddd4c6;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "IBM Plex Sans", "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, #e7f3ec 0%, transparent 55%),
    linear-gradient(180deg, #fbf8f2, var(--bg));
  line-height: 1.55;
}
.wrap { width: min(960px, calc(100% - 2rem)); margin: 0 auto; }
.top {
  border-bottom: 1px solid var(--line);
  background: rgba(255,253,249,0.92);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.top .wrap {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  min-height: 3.25rem;
}
.brand {
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.02em;
}
nav { display: flex; flex-wrap: wrap; gap: 0.85rem; }
nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}
nav a:hover { color: var(--accent); }
.prose { padding: 2rem 0 4rem; }
.prose h1, .prose h2, .prose h3 { line-height: 1.2; letter-spacing: -0.02em; }
.prose a { color: var(--accent); }
.prose code, .prose pre {
  font-family: var(--mono);
  font-size: 0.9em;
}
.prose pre {
  background: #182028;
  color: #e8eef4;
  padding: 1rem 1.1rem;
  overflow: auto;
  border-radius: 10px;
}
.prose table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.92rem;
}
.prose th, .prose td {
  border: 1px solid var(--line);
  padding: 0.45rem 0.6rem;
  vertical-align: top;
}
.prose th { background: #efe8dc; text-align: left; }
.prose blockquote {
  border-left: 3px solid var(--accent);
  margin-left: 0;
  padding-left: 1rem;
  color: var(--muted);
}
.prose ul { padding-left: 1.25rem; }
.note {
  border: 1px solid var(--line);
  background: #fffdf9;
  border-radius: 10px;
  padding: 0.85rem 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}