:root {
  --blue: hsl(217 91% 30%);
  --cyan: hsl(199 89% 48%);
  --navy: hsl(222 47% 11%);
  --bg: #ffffff;
  --surface: hsl(210 40% 97%);
  --text: hsl(222 47% 11%);
  --muted: hsl(215 16% 40%);
  --border: hsl(214 32% 90%);
  --link: hsl(217 91% 40%);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: hsl(222 47% 8%);
    --surface: hsl(222 40% 13%);
    --text: hsl(210 40% 96%);
    --muted: hsl(215 20% 70%);
    --border: hsl(222 30% 22%);
    --link: hsl(199 89% 60%);
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--link); }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 20px; }
header.site { border-bottom: 1px solid var(--border); }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 14px; padding-bottom: 14px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--text); text-decoration: none; }
.mark { width: 30px; height: 30px; border-radius: 8px; display: block; }
nav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: 15px; }
nav a:hover { color: var(--text); }
.hero { padding: 72px 0 56px; }
.hero h1 { font-size: clamp(34px, 6vw, 54px); line-height: 1.1; margin: 0 0 18px; letter-spacing: -0.02em; }
.hero h1 span { background: linear-gradient(90deg, var(--blue), var(--cyan)); -webkit-background-clip: text; background-clip: text; color: transparent; }
@media (prefers-color-scheme: dark) { .hero h1 span { background: linear-gradient(90deg, hsl(217 91% 65%), var(--cyan)); -webkit-background-clip: text; background-clip: text; } }
.hero p.lead { font-size: 20px; color: var(--muted); max-width: 640px; margin: 0 0 28px; }
.badge { display: inline-block; padding: 8px 16px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); font-size: 15px; color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; padding-bottom: 64px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 22px; }
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 16px; }
.card .num { font-size: 13px; font-weight: 700; color: var(--cyan); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 6px; }
article { padding: 48px 0 64px; max-width: 760px; }
article h1 { font-size: 34px; line-height: 1.2; margin: 0 0 6px; }
article .updated { color: var(--muted); margin: 0 0 28px; }
article h2 { font-size: 22px; margin: 36px 0 10px; }
article li { margin-bottom: 6px; }
.table-scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 15px; margin: 8px 0 16px; }
th, td { text-align: left; vertical-align: top; padding: 10px 12px; border-bottom: 1px solid var(--border); }
th { background: var(--surface); }
footer.site { border-top: 1px solid var(--border); color: var(--muted); font-size: 14px; }
footer.site .wrap { padding-top: 22px; padding-bottom: 32px; display: flex; flex-wrap: wrap; gap: 8px 22px; justify-content: space-between; }
footer.site a { color: var(--muted); }