:root {
  --paper: #f6f3ed;
  --surface: #fbf8f2;
  --surface-2: #f1ece3;
  --ink: #141214;
  --muted: #6f695e;
  --accent: #2438e6;
  --accent-text: #1b28b8;
  --accent-ink: #ffffff;
  --line: rgba(20, 18, 20, 0.12);
  --line-soft: rgba(20, 18, 20, 0.07);
  --grain: 0.045;
  --serif: "Fraunces", Georgia, serif;
  --sans: "Hanken Grotesk", system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  color-scheme: light;
}
[data-theme="dark"] {
  --paper: #1c2230;
  --surface: #232b3c;
  --surface-2: #1d232c;
  --ink: #e9edf0;
  --muted: #93a0b3;
  --accent: #7c97f5;
  --accent-text: #7c97f5;
  --accent-ink: #0b1020;
  --line: rgba(255, 255, 255, 0.13);
  --line-soft: rgba(255, 255, 255, 0.07);
  --grain: 0.06;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
html { scroll-padding-top: 16px; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  line-height: 1.65;
  min-height: 100svh;
  padding: 0 20px 64px;
  position: relative;
  overflow-x: hidden;
  transition: background-color .3s ease, color .3s ease;
}
body::before {
  content: "";
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  opacity: var(--grain);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
[data-theme="dark"] body::before { mix-blend-mode: soft-light; }

.skip {
  position: absolute; left: -999px; top: 8px; z-index: 100;
  background: var(--ink); color: var(--paper); padding: 8px 14px; border-radius: 8px;
  font: 600 14px var(--sans); text-decoration: none;
}
.skip:focus { left: 12px; }

.bar {
  position: relative; z-index: 2;
  max-width: 72ch; margin: 0 auto; height: 76px;
  display: flex; align-items: center; justify-content: space-between;
}
.brand { display: inline-flex; align-items: center; height: 28px; border-radius: 6px; }
.brand img { height: 22px; width: auto; }
.brand:focus-visible { outline: 2px solid var(--accent-text); outline-offset: 3px; }
.theme-toggle {
  width: 44px; height: 44px; border-radius: 13px;
  border: 1.5px solid var(--line); background: var(--surface); color: var(--ink);
  cursor: pointer; display: grid; place-items: center;
  transition: border-color .2s ease;
}
.theme-toggle:hover { border-color: var(--accent-text); }
.theme-toggle:focus-visible { outline: 2px solid var(--accent-text); outline-offset: 2px; }
.theme-toggle .ico { width: 18px; height: 18px; }
[data-theme="dark"] .ico-sun { display: none; }
.ico-moon { display: none; }
[data-theme="dark"] .ico-moon { display: block; }

main { position: relative; z-index: 1; max-width: 72ch; margin: 0 auto; }

h1 {
  font: 600 clamp(30px, 6vw, 40px)/1.08 var(--serif);
  letter-spacing: -.015em; margin: 0 0 14px;
}
.doc-meta { font: 500 13px/1.4 var(--mono); letter-spacing: .03em; color: var(--muted); margin: 0 0 6px; }
.entity { font-size: 14.5px; color: var(--muted); margin: 0 0 8px; }
.lede { font-size: 16.5px; color: var(--ink); margin: 18px 0 0; }

.doc-toc { margin: 30px 0 0; padding: 18px 20px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; }
.doc-toc-k { font: 500 12px/1.2 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin: 0 0 10px; }
.doc-toc ol { margin: 0; padding: 0; list-style: none; counter-reset: toc; }
.doc-toc li { font-size: 15.5px; margin: 0; counter-increment: toc; }
.doc-toc a { display: block; padding: 9px 0 9px 34px; text-indent: -34px; color: var(--ink); text-decoration: none; }
.doc-toc a::before { content: counter(toc, decimal-leading-zero); display: inline-block; width: 34px; font-family: var(--mono); font-size: 12px; color: var(--muted); text-indent: 0; }
.doc-toc a:hover { color: var(--accent-text); }
.doc-toc a:focus-visible { outline: 2px solid var(--accent-text); outline-offset: 2px; border-radius: 6px; }

section { margin-top: 72px; }
.sec-k {
  font: 500 12px/1.2 var(--mono); letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent-text); margin: 0 0 8px;
}
h2 {
  font: 600 clamp(20px, 4vw, 24px)/1.2 var(--serif);
  letter-spacing: -.01em; margin: 0 0 12px;
}
h3 {
  font: 600 clamp(17px, 3vw, 19px)/1.25 var(--serif);
  letter-spacing: -.01em; margin: 26px 0 10px;
}
section h2 > a { padding: 10px 0; }
p { font-size: 15.5px; margin: 0 0 22px; }
ul { margin: 0 0 22px; padding-left: 1.15em; }
li { font-size: 15.5px; margin: 0 0 16px; }
li::marker { color: var(--muted); }
b, strong { font-weight: 700; }
code { font-family: var(--mono); font-size: .9em; }

.price { font-family: var(--mono); font-size: .93em; font-weight: 600; letter-spacing: -.01em; }
.aud-note { font: 500 12px/1.4 var(--mono); letter-spacing: .03em; color: var(--muted); margin: 0 0 14px; }

a { color: var(--accent-text); text-decoration: underline; text-underline-offset: 3px; border-radius: 3px; }
a:hover { color: var(--ink); }
a:focus-visible { outline: 2px solid var(--accent-text); outline-offset: 2px; }

footer {
  position: relative; z-index: 1;
  max-width: 72ch; margin: 60px auto 0; padding-top: 24px;
  border-top: 1px solid var(--line);
  font-size: 13.5px; color: var(--muted);
}
footer nav { display: flex; flex-wrap: wrap; gap: 14px 20px; margin: 0 0 14px; }
footer nav a { padding: 6px 0; }
footer nav a, footer a { color: var(--muted); }
footer nav a:hover, footer a:hover { color: var(--ink); }
footer p { font-size: 13.5px; margin: 0 0 6px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}