:root {
  color-scheme: light;
  --bg: #eef2f4; --surface: #ffffff; --ink: #14232b; --muted: #566a75; --line: #d3dde2;
  --accent: #0b6e6e; --accent-ink: #ffffff; --focus: #0b6e6e;
  --font-body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-num: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0f1a20; --surface: #17262e; --ink: #e6eef1; --muted: #9db1bb; --line: #2b404a;
    --accent: #4fc4bd; --accent-ink: #0a1a1a; --focus: #4fc4bd;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f1a20; --surface: #17262e; --ink: #e6eef1; --muted: #9db1bb; --line: #2b404a;
  --accent: #4fc4bd; --accent-ink: #0a1a1a; --focus: #4fc4bd;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--font-body); font-size: 16px; line-height: 1.65; padding-inline: 16px; padding-block: 20px 48px; }
a { color: var(--accent); text-underline-offset: 2px; }
a:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.wrap { max-width: 740px; margin-inline: auto; display: flex; flex-direction: column; gap: 22px; }
.wrap > *, main.wrap { min-width: 0; }
main.wrap { width: 100%; }
.top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 20px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.brand { font-weight: 600; text-decoration: none; color: var(--ink); letter-spacing: -0.01em; }
.top nav { display: flex; flex-wrap: wrap; gap: 4px 18px; font-size: 14px; }
.top nav a { color: var(--muted); text-decoration: none; }
.top nav a:hover { color: var(--accent); text-decoration: underline; }
article, .panel { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: clamp(18px, 4vw, 32px); }
h1 { font-size: clamp(26px, 5vw, 34px); line-height: 1.15; margin: 0 0 8px; font-weight: 600; text-wrap: balance; letter-spacing: -0.01em; }
h2 { font-size: 21px; line-height: 1.25; margin: 34px 0 10px; font-weight: 600; text-wrap: balance; }
h3 { font-size: 17px; margin: 22px 0 6px; font-weight: 600; }
p { margin: 0 0 14px; max-width: 68ch; }
ul, ol { margin: 0 0 14px; padding-left: 22px; max-width: 68ch; }
li { margin-bottom: 6px; }
.meta { color: var(--muted); font-size: 14px; margin: 0 0 18px; }
.lede { font-size: 18px; color: var(--ink); }
.callout { border-left: 3px solid var(--accent); background: var(--bg); padding: 12px 16px; border-radius: 0 6px 6px 0; margin: 18px 0; max-width: 68ch; }
.callout p { margin: 0; }
.tablewrap { overflow-x: auto; margin: 6px 0 16px; }
table { border-collapse: collapse; width: 100%; font-size: 14px; min-width: 460px; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); font-weight: 600; }
td.n, th.n { text-align: right; font-family: var(--font-num); font-variant-numeric: tabular-nums; white-space: nowrap; }
.cta { display: inline-block; background: var(--accent); color: var(--accent-ink); padding: 10px 16px; border-radius: 6px; text-decoration: none; font-weight: 500; margin: 4px 0 10px; }
.cta:hover { opacity: 0.9; }
.related h2 { margin-top: 0; font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
.related ul { list-style: none; padding: 0; margin: 0; }
.related li { padding: 10px 0; border-top: 1px solid var(--line); margin: 0; }
.related li:first-child { border-top: 0; }
.related a { font-weight: 500; }
.related span { display: block; font-size: 14px; color: var(--muted); }
.sources { font-size: 14px; color: var(--muted); }
.sources h2 { font-size: 15px; margin: 28px 0 8px; color: var(--ink); }
.sources li { margin-bottom: 4px; }
.disclaimer { font-size: 13px; color: var(--muted); max-width: 70ch; }
footer { font-size: 13px; color: var(--muted); display: flex; flex-direction: column; gap: 8px; }
footer nav { display: flex; flex-wrap: wrap; gap: 4px 16px; }