:root {
  --bg: #05070a;
  --surface: #0e131b;
  --line: #1b2430;
  --ink: #e6edf3;
  --muted: #a7b2be;
  --accent: #8be0a4;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; line-height: 1.7; }
a { color: var(--accent); text-underline-offset: .2em; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; border-radius: 2px; }
.skip-link { position: absolute; left: 16px; top: -60px; padding: 8px 12px; background: var(--accent); color: #04180c; z-index: 10; }
.skip-link:focus { top: 10px; }
.site-header { border-bottom: 1px solid var(--line); background: #080d10; }
.site-header-inner { max-width: 1060px; min-height: 68px; margin: auto; padding: 14px 24px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; letter-spacing: .04em; white-space: nowrap; }
.brand-mark { width: 20px; height: 20px; border-radius: 50%; border: 2px solid var(--accent); box-shadow: 0 0 14px rgba(139,224,164,.35); }
.site-nav { display: flex; flex-wrap: wrap; gap: 14px 22px; font-size: 14px; }
.site-nav a { color: var(--muted); text-decoration: none; }
.site-nav a[aria-current="page"], .site-nav a:hover { color: var(--accent); }
.layout { max-width: 1060px; margin: auto; padding: 58px 24px 100px; display: grid; grid-template-columns: 190px minmax(0, 690px); gap: clamp(32px, 6vw, 80px); }
.toc { position: sticky; top: 28px; align-self: start; }
.toc p { margin: 0 0 12px; color: var(--accent); font-size: 11px; font-weight: 700; letter-spacing: .13em; text-transform: uppercase; }
.toc a { display: block; padding: 5px 0; color: var(--muted); text-decoration: none; font-size: 13px; line-height: 1.4; }
.toc a:hover { color: var(--accent); }
.eyebrow { margin: 0 0 10px; color: var(--accent); font-size: 12px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
h1 { margin: 0; font-size: clamp(38px, 5vw, 58px); line-height: 1.08; letter-spacing: -.035em; }
.updated { margin: 18px 0 0; color: var(--muted); font-size: 14px; }
.intro { margin: 30px 0 36px; padding: 20px 22px; background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: 12px; color: var(--ink); }
.intro p { margin: 0 0 10px; }
.intro p:last-child { margin-bottom: 0; }
section { border-top: 1px solid var(--line); padding: 30px 0 10px; scroll-margin-top: 24px; }
h2 { margin: 0 0 14px; font-size: 22px; letter-spacing: -.02em; line-height: 1.25; }
p, li { color: var(--muted); font-size: 15px; }
p { margin: 0 0 14px; }
ul { padding-left: 22px; margin: 0 0 16px; }
li { padding-left: 4px; margin: 6px 0; }
strong { color: var(--ink); font-weight: 650; }
.site-footer { border-top: 1px solid var(--line); padding: 26px 24px 36px; text-align: center; }
.site-footer p { margin: 0; font-size: 13px; }
.site-footer a { margin: 0 9px; }
@media (max-width: 760px) {
  .site-header-inner { align-items: flex-start; flex-direction: column; gap: 8px; padding: 16px 22px; }
  .layout { display: block; padding: 42px 22px 76px; }
  .toc { position: static; display: flex; flex-wrap: wrap; gap: 4px 14px; margin: 0 0 32px; }
  .toc p { width: 100%; }
  .toc a { padding: 3px 0; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }