:root {
  --sky: #269AE2; --sky-pressed: #1E7CB8; --sky-tint: #E9F3FD;
  --ink: #0F172A; --muted: #64748B; --faint: #94A3B8;
  --paper: #FFFFFF; --hairline: #E2E8F0; --field: #F1F5F9;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.doc-header {
  border-bottom: 1px solid var(--hairline);
  background: radial-gradient(120% 140% at 0% 0%, var(--sky-tint) 0%, rgba(233,243,253,0) 55%), var(--paper);
}
.doc-header .inner { max-width: 760px; margin: 0 auto; padding: 20px 24px; display: flex; align-items: center; gap: 12px; }
.doc-header a.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.doc-header img { width: 36px; height: 36px; border-radius: 9px; }
.doc-header .name { font-weight: 800; font-size: 18px; color: var(--sky); letter-spacing: -0.01em; }
.doc-header .back { margin-left: auto; font-size: 14px; font-weight: 600; color: var(--muted); text-decoration: none; }
.doc-header .back:hover { color: var(--sky); }

main { max-width: 760px; margin: 0 auto; padding: 40px 24px 80px; }
h1 { font-size: clamp(28px, 5vw, 40px); font-weight: 800; letter-spacing: -0.02em; line-height: 1.1; }
.updated { color: var(--muted); font-size: 14px; margin-top: 8px; font-weight: 500; }
h2 { font-size: clamp(19px, 3vw, 22px); font-weight: 700; margin-top: 36px; letter-spacing: -0.01em; }
h3 { font-size: 16px; font-weight: 700; margin-top: 20px; }
p, li { color: #1E293B; font-size: 16px; margin-top: 12px; }
ul, ol { margin-top: 8px; padding-left: 22px; }
li { margin-top: 6px; }
a { color: var(--sky); text-decoration: none; font-weight: 600; }
a:hover { text-decoration: underline; }
strong { font-weight: 700; }

.lead { font-size: 18px; color: var(--muted); margin-top: 16px; }
.callout {
  margin-top: 24px; padding: 16px 18px; border: 1px solid var(--hairline);
  border-left: 4px solid var(--sky); border-radius: 10px; background: var(--field);
}
.callout p:first-child { margin-top: 0; }

table { width: 100%; border-collapse: collapse; margin-top: 16px; font-size: 15px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--hairline); vertical-align: top; }
th { color: var(--muted); font-weight: 700; font-size: 13px; text-transform: uppercase; letter-spacing: .03em; }

.doc-footer { border-top: 1px solid var(--hairline); }
.doc-footer .inner { max-width: 760px; margin: 0 auto; padding: 24px; display: flex; flex-wrap: wrap; gap: 8px 18px; align-items: center; }
.doc-footer a { color: var(--muted); font-weight: 600; font-size: 14px; }
.doc-footer a:hover { color: var(--sky); }
.doc-footer .copy { color: var(--faint); font-size: 13px; margin-left: auto; }