:root {
  --ink: #111111; --ink-2: #3d3d3d; --muted: #767676; --faint: #a8a8a8;
  --line: #e5e5e5; --line-2: #d0d0d0; --surface: #f5f4f1; --bg: #ffffff;
  --sans: "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 15px/1.7 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-underline-offset: 3px; }
.wrap { max-width: 1320px; margin: 0 auto; padding: 0 40px; }
.label { font-size: 11px; font-weight: 500; letter-spacing: .09em; text-transform: uppercase; color: var(--muted); }
.label.ink { color: var(--ink); }
header { border-bottom: 1px solid var(--line); background: rgba(255,255,255,.94); backdrop-filter: blur(10px); position: sticky; top: 0; z-index: 10; }
header .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 20px; }
header img { height: 24px; display: block; }
.lang { display: flex; gap: 6px; align-items: center; }
.lang button { background: none; border: 0; padding: 2px 0; cursor: pointer; color: var(--faint); font: inherit; letter-spacing: inherit; }
.lang button.on { color: var(--ink); text-decoration: underline; text-underline-offset: 4px; }
.lang span { color: var(--line-2); }
.layout { display: grid; grid-template-columns: 240px minmax(0, 720px); gap: 80px; padding-top: 72px; padding-bottom: 120px; }
.side { position: sticky; top: 110px; align-self: start; }
.side a { display: block; text-decoration: none; padding: 8px 0; border-bottom: 1px solid var(--line); }
.side a.on, .side a:hover { color: var(--ink); }
.side a.on { font-weight: 600; }
h1 { font-weight: 300; font-size: clamp(38px, 5vw, 64px); line-height: 1; letter-spacing: -.04em; margin: 16px 0 12px; }
.updated { color: var(--muted); margin: 0 0 48px; }
h2 { font-size: 19px; font-weight: 500; letter-spacing: -.01em; margin: 44px 0 10px; padding-top: 22px; border-top: 1px solid var(--line); }
h3 { font-size: 15px; font-weight: 600; margin: 24px 0 6px; }
p, li { color: var(--ink-2); }
ul { padding-left: 20px; }
li { margin: 4px 0; }
.lead { font-size: 17px; color: var(--ink); }
table { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 14px; }
th, td { text-align: left; padding: 10px 12px 10px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 500; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.box { background: var(--surface); padding: 20px 24px; margin: 20px 0; }
.box p { margin: 0; }
footer { border-top: 1px solid var(--line); padding: 28px 0; }
footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; align-items: center; }
footer nav { display: flex; gap: 22px; flex-wrap: wrap; }
footer nav a { text-decoration: none; }
footer nav a:hover { text-decoration: underline; }
[hidden] { display: none !important; }
@media (max-width: 860px) {
  .wrap { padding: 0 20px; }
  .layout { grid-template-columns: 1fr; gap: 28px; padding-top: 36px; padding-bottom: 72px; }
  .side { position: static; display: flex; flex-wrap: wrap; gap: 4px 18px; }
  .side a { border: 0; padding: 2px 0; }
  table { font-size: 13px; }
}
.note { background: var(--surface); padding: 14px 18px; margin: 0 0 8px; font-size: 14px; color: var(--ink); }