:root {
  --navy: #0b1a4a; --navy-deep: #08123a; --brand: #1e63ff; --sky: #00b4ff;
  --ink: #0f172a; --muted: #64748b; --line: #e3e9f5; --surface: #f5f8ff; --paper: #fff;
  --sans: "Plus Jakarta Sans", "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; min-height: 100vh; background: var(--surface); color: var(--ink);
  font: 400 1.0625rem/1.7 var(--sans); -webkit-font-smoothing: antialiased;
}
a { color: var(--brand); }
.top {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1.1rem 1.25rem; max-width: 64rem; margin: 0 auto;
}
.top a { text-decoration: none; color: var(--navy); font-weight: 700; display: inline-flex; align-items: center; gap: .6rem; }
.top .mark {
  display: inline-grid; place-items: center; width: 2.1rem; height: 2.1rem; border-radius: .65rem;
  background: linear-gradient(135deg, var(--brand), var(--sky)); color: #fff; font-weight: 800; font-size: .95rem;
}
.top nav a { font-weight: 500; color: var(--muted); font-size: .9rem; margin-left: 1rem; }
.top nav a[aria-current] { color: var(--navy); font-weight: 600; }
main { max-width: 64rem; margin: 0 auto; padding: 0 1.25rem 4rem; }
.doc {
  background: var(--paper); border: 1px solid var(--line); border-radius: 1.5rem;
  padding: clamp(1.5rem, 5vw, 3.5rem);
  box-shadow: 0 1px 2px rgb(11 26 74 / .04), 0 24px 56px -28px rgb(11 26 74 / .22);
}
.eyebrow { font-size: .75rem; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; color: var(--brand); margin: 0; }
h1 { margin: .5rem 0 0; font-size: clamp(1.9rem, 1.3rem + 2.2vw, 2.75rem); line-height: 1.1; letter-spacing: -.02em; color: var(--navy); }
.lede { color: var(--muted); font-size: 1.05rem; max-width: 40rem; margin: 1rem 0 0; }
.meta { color: var(--muted); font-size: .85rem; margin: .75rem 0 0; }
.summary {
  margin: 2rem 0 0; padding: 1.25rem 1.5rem; border-radius: 1rem; background: var(--surface); border: 1px solid var(--line);
}
.summary h2 { margin: 0; font-size: .95rem; color: var(--navy); }
.summary ul { margin: .6rem 0 0; padding-left: 1.2rem; }
.summary li { margin: .3rem 0; }
.toc { margin: 2rem 0 0; columns: 2; column-gap: 2rem; font-size: .92rem; }
.toc ol { margin: 0; padding-left: 1.3rem; }
.toc li { margin: .2rem 0; break-inside: avoid; }
.toc a { color: var(--ink); text-decoration: none; }
.toc a:hover { color: var(--brand); text-decoration: underline; }
section { margin-top: 2.75rem; }
h2 { font-size: 1.3rem; line-height: 1.3; letter-spacing: -.01em; color: var(--navy); margin: 0 0 .75rem; scroll-margin-top: 1rem; }
h2 .n { color: var(--brand); font-variant-numeric: tabular-nums; margin-right: .5rem; }
h3 { font-size: 1.02rem; margin: 1.5rem 0 .4rem; color: var(--navy); }
p, li { max-width: 46rem; }
p { margin: .7rem 0; }
ul, ol { padding-left: 1.3rem; }
li { margin: .35rem 0; }
table { border-collapse: collapse; width: 100%; max-width: 46rem; margin: 1rem 0; font-size: .95rem; }
th, td { text-align: left; vertical-align: top; padding: .6rem .75rem; border-top: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; font-size: .8rem; letter-spacing: .04em; text-transform: uppercase; }
tr:last-child td { border-bottom: 1px solid var(--line); }
.note { border-left: 3px solid var(--brand); padding: .4rem 1rem; margin: 1rem 0; color: var(--ink); background: var(--surface); border-radius: 0 .6rem .6rem 0; }
footer { padding: 1.5rem 1.25rem 2.5rem; text-align: center; font-size: .85rem; color: var(--muted); }
footer a { color: var(--muted); margin: 0 .4rem; }
@media (max-width: 640px) { .toc { columns: 1; } .top nav a { margin-left: .75rem; } }
@media (prefers-color-scheme: dark) {
  body { background: var(--navy-deep); color: #e8edfb; }
  .doc { background: #0d1a3f; border-color: rgb(255 255 255 / .08); }
  .summary, .note { background: rgb(255 255 255 / .04); border-color: rgb(255 255 255 / .1); }
  h1, h2, h3, .summary h2, .top a, .toc a { color: #fff; }
  .lede, .meta, footer, th, .top nav a { color: #9fb0d6; }
  th, td { border-color: rgb(255 255 255 / .1); }
  a { color: #7fb0ff; }
}