:root {
  --bg: #fbfbfa;
  --surface: #ffffff;
  --ink: #1c1f24;
  --muted: #5d6673;
  --line: #e3e5e8;
  --accent: #1f6feb;
  --accent-ink: #ffffff;
  --code-bg: #f4f5f7;
  --radius: 10px;
  --maxw: 1080px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code, pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 14px;
}

/* header */
.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 18px 16px;
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 650;
  font-size: 18px;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.brand:hover { text-decoration: none; }
.mark {
  width: 18px; height: 18px;
  border-radius: 5px;
  background: linear-gradient(135deg, #1f6feb, #58a6ff);
  display: inline-block;
}
.bar nav { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.bar nav a { color: var(--muted); font-size: 15px; }
.bar nav a:hover { color: var(--ink); text-decoration: none; }

/* buttons */
.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: var(--radius);
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 15px;
  font-weight: 550;
  border: 1px solid var(--accent);
}
.btn:hover { text-decoration: none; filter: brightness(0.94); }
.btn.ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn.ghost:hover { border-color: var(--muted); }
.bar nav .btn { padding: 7px 14px; }

/* layout */
main { max-width: var(--maxw); margin: 0 auto; padding: 0 16px 64px; }

.hero { padding: 64px 0 48px; max-width: 680px; }
.kicker {
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
h1 {
  margin: 0 0 18px;
  font-size: 44px;
  line-height: 1.12;
  letter-spacing: -0.025em;
  font-weight: 680;
}
.lede { margin: 0 0 28px; font-size: 18px; color: var(--muted); }
.cta { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.fineprint { font-size: 14px; color: var(--muted); margin: 0; }

h2 { font-size: 26px; letter-spacing: -0.02em; margin: 0 0 14px; }
h3 { font-size: 17px; margin: 0 0 8px; }
h4 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin: 0 0 12px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 48px;
}
.grid article { background: var(--surface); padding: 26px 24px; }
.grid p { margin: 0; color: var(--muted); font-size: 15px; }

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px;
  margin-bottom: 48px;
}
.panel > p { color: var(--muted); }
pre {
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  overflow-x: auto;
  margin: 18px 0;
}
pre code { background: none; padding: 0; }
p code, li code, td code {
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 1px 5px;
}

.numbers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 24px;
  padding: 8px 0 0;
}
.numbers div { display: flex; flex-direction: column; gap: 4px; }
.numbers strong { font-size: 26px; letter-spacing: -0.02em; }
.numbers span { font-size: 14px; color: var(--muted); }

/* tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0 8px;
  font-size: 15px;
}
th, td {
  text-align: left;
  padding: 11px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
th { font-size: 13px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); font-weight: 600; }
tbody tr:last-child td { border-bottom: none; }

/* status dots */
.dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  margin-right: 8px;
  background: #1a7f37;
}
.dot.warn { background: #bf8700; }

/* prose pages */
.prose { max-width: 720px; padding: 52px 0 0; }
.prose h1 { font-size: 34px; margin-bottom: 10px; }
.prose .updated { color: var(--muted); font-size: 14px; margin: 0 0 32px; }
.prose h2 { font-size: 20px; margin: 34px 0 10px; }
.prose p, .prose li { color: #343a42; }
.prose ul { padding-left: 22px; }
.prose li { margin-bottom: 7px; }

/* footer */
footer {
  border-top: 1px solid var(--line);
  background: var(--surface);
  padding: 40px 16px 28px;
}
.cols {
  max-width: var(--maxw);
  margin: 0 auto 28px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 28px;
}
.cols div { display: flex; flex-direction: column; gap: 8px; }
.cols a { font-size: 15px; color: var(--muted); }
.cols a:hover { color: var(--ink); text-decoration: none; }
.copy {
  max-width: var(--maxw);
  margin: 0 auto;
  font-size: 14px;
  color: var(--muted);
}

@media (max-width: 640px) {
  h1 { font-size: 33px; }
  .hero { padding: 44px 0 36px; }
  .bar { flex-direction: column; align-items: flex-start; }
}