:root {
  --paper: #f4f6f9;
  --surface: #ffffff;
  --ink: #16202e;
  --ink-soft: #4d5a6b;
  --ink-faint: #7c8899;
  --rule: #d8dfe7;
  --accent: #2f4b8f;
  --accent-bg: #e7ecf7;
  --warn: #91600f;
  --warn-bg: #f7eeda;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0d131b;
    --surface: #151d27;
    --ink: #e3e9f0;
    --ink-soft: #a3b0c0;
    --ink-faint: #7d8a9a;
    --rule: #2b3745;
    --accent: #93a9e8;
    --accent-bg: #1d2740;
    --warn: #d7a44f;
    --warn-bg: #2c2415;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 760px; margin: 0 auto; padding: 0 24px 88px; }

header.site { padding: 48px 0 24px; border-bottom: 2px solid var(--ink); }

.kicker {
  font-family: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent); margin: 0 0 12px;
}

h1 {
  font-family: "IBM Plex Serif", Georgia, serif;
  font-weight: 600; font-size: clamp(28px, 5vw, 38px);
  line-height: 1.15; letter-spacing: -0.015em;
  text-wrap: balance; margin: 0 0 12px;
}

.tagline { color: var(--ink-soft); font-size: 17px; margin: 0; max-width: 60ch; }

nav.site { margin-top: 20px; display: flex; gap: 18px; flex-wrap: wrap; }

nav.site a {
  font-family: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  font-size: 12px; letter-spacing: 0.05em; text-transform: uppercase;
  color: var(--ink-soft); text-decoration: none;
  border-bottom: 1px solid var(--rule); padding-bottom: 2px;
}

nav.site a:hover, nav.site a:focus-visible { color: var(--accent); border-color: var(--accent); }

h2 {
  font-family: "IBM Plex Serif", Georgia, serif;
  font-weight: 600; font-size: 24px; letter-spacing: -0.01em;
  margin: 48px 0 4px; padding-bottom: 8px; border-bottom: 1px solid var(--rule);
}

h3 { font-size: 16px; font-weight: 600; margin: 28px 0 6px; }

p { max-width: 68ch; }
ul { max-width: 68ch; padding-left: 20px; }
ul li { margin: 6px 0; }

code {
  font-family: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: 0.88em; background: var(--accent-bg); color: var(--accent);
  padding: 1px 5px; border-radius: 2px; word-break: break-word;
}

ol.steps { counter-reset: s; list-style: none; padding: 0; margin: 24px 0 0; }

ol.steps > li {
  counter-increment: s;
  display: grid; grid-template-columns: 32px 1fr; gap: 16px;
  padding: 16px 0; border-top: 1px solid var(--rule);
}

ol.steps > li::before {
  content: counter(s);
  font-family: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  font-size: 12px; font-weight: 600;
  color: var(--accent); background: var(--accent-bg);
  width: 26px; height: 26px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}

ol.steps strong { display: block; margin-bottom: 2px; }
ol.steps p { margin: 0; color: var(--ink-soft); font-size: 15px; }

.warn {
  background: var(--warn-bg); border-left: 3px solid var(--warn);
  padding: 16px 18px; margin: 28px 0 0;
}

.warn h3 { margin: 0 0 6px; color: var(--warn); font-size: 15px; }
.warn p { margin: 0 0 10px; }
.warn p:last-child { margin-bottom: 0; }

.fill {
  font-family: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  font-size: 0.88em; background: var(--warn-bg); color: var(--warn);
  padding: 1px 6px; border-radius: 2px; font-weight: 500;
}

table { width: 100%; border-collapse: collapse; margin-top: 20px; font-size: 15px; background: var(--surface); }
th { text-align: left; font-family: "IBM Plex Mono", ui-monospace, Menlo, monospace;
     font-size: 10px; letter-spacing: 0.11em; text-transform: uppercase; color: var(--ink-faint);
     padding: 10px 12px; border-bottom: 1px solid var(--rule); }
td { padding: 10px 12px; border-bottom: 1px solid var(--rule); vertical-align: top; }
.table-wrap { overflow-x: auto; border: 1px solid var(--rule); }

footer.site {
  margin-top: 64px; padding-top: 20px; border-top: 1px solid var(--rule);
  font-family: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  font-size: 11.5px; color: var(--ink-faint); line-height: 1.8;
}

a { color: var(--accent); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }