:root {
  --paper: #fbf9f7;
  --surface: #ffffff;
  --ink: #23201e;
  --ink-soft: #5c554f;
  --ink-faint: #8b837c;
  --rule: #e4ded8;
  --rule-strong: #cdc4bc;
  --band: #f4f0ec;
  --accent: #d95d22;
  --accent-soft: #fdefe7;
  --font: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", Pretendard,
          "Malgun Gothic", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #17150f;
    --surface: #1f1c16;
    --ink: #ece7e0;
    --ink-soft: #b3aaa0;
    --ink-faint: #877f76;
    --rule: #35302a;
    --rule-strong: #4a433b;
    --band: #201d17;
    --accent: #ff8b52;
    --accent-soft: #2e2018;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}

.wrap { max-width: 720px; margin: 0 auto; padding: 40px 20px 80px; }

header.site { display: flex; align-items: baseline; gap: 10px; padding-bottom: 20px; border-bottom: 1px solid var(--rule); flex-wrap: wrap; }
header.site a.brand { font-weight: 700; font-size: 17px; color: var(--ink); text-decoration: none; letter-spacing: -.01em; }
header.site nav { margin-left: auto; display: flex; gap: 16px; font-size: 14px; }
header.site nav a { color: var(--ink-soft); text-decoration: none; }
header.site nav a:hover, header.site nav a:focus-visible { color: var(--accent); }

h1 { font-size: clamp(24px, 5vw, 30px); line-height: 1.3; letter-spacing: -.02em; margin: 32px 0 6px; text-wrap: balance; }
.updated { margin: 0 0 28px; font-family: var(--mono); font-size: 12.5px; color: var(--ink-faint); }
.lede { margin: 0 0 32px; color: var(--ink-soft); font-size: 16.5px; }

h2 { font-size: 18px; margin: 40px 0 12px; padding-bottom: 8px; border-bottom: 1px solid var(--rule); letter-spacing: -.01em; }
h3 { font-size: 15.5px; margin: 24px 0 8px; }
p { margin: 0 0 14px; }
ul, ol { margin: 0 0 14px; padding-left: 22px; }
li { margin-bottom: 6px; }
li::marker { color: var(--ink-faint); }
a { color: var(--accent); }

table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 16px 0; display: block; overflow-x: auto; white-space: nowrap; }
@media (min-width: 640px) { table { display: table; white-space: normal; } }
th, td { border: 1px solid var(--rule); padding: 10px 12px; text-align: left; vertical-align: top; }
thead th { background: var(--band); font-weight: 600; }

.callout { background: var(--accent-soft); border-left: 3px solid var(--accent); padding: 14px 16px; margin: 20px 0; font-size: 15px; border-radius: 0 4px 4px 0; }
.callout strong { font-weight: 700; }

.fill { color: var(--accent); font-family: var(--mono); font-size: .92em; }

dl.biz { display: grid; grid-template-columns: max-content 1fr; gap: 8px 20px; margin: 16px 0 0; font-size: 14.5px; }
dl.biz dt { color: var(--ink-faint); }
dl.biz dd { margin: 0; }

footer.site { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--rule); font-size: 13px; color: var(--ink-faint); }
footer.site a { color: var(--ink-soft); }

.cards { display: grid; gap: 12px; margin: 28px 0; }
.card { display: block; background: var(--surface); border: 1px solid var(--rule); border-radius: 8px; padding: 18px 20px; text-decoration: none; color: var(--ink); }
.card:hover, .card:focus-visible { border-color: var(--accent); }
.card b { display: block; font-size: 16px; margin-bottom: 3px; }
.card span { font-size: 14px; color: var(--ink-soft); }

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