:root {
  --bg: #ffffff;
  --surface: #f5f4fb;
  --text: #15141a;
  --muted: #5d5b68;
  --accent: #6b5ce7;
  --border: #e6e4ef;
  --max: 720px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0c11;
    --surface: #18171f;
    --text: #f2f1f7;
    --muted: #a3a1b0;
    --accent: #9a8ff5;
    --border: #2a2833;
  }
}
* { 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, "SF Pro Text", "Segoe UI", Inter, Roboto, sans-serif;
}
a { color: var(--accent); }
header, main, footer { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
header { display: flex; align-items: center; justify-content: space-between; padding-top: 22px; padding-bottom: 22px; }
.brand { font-weight: 800; font-size: 20px; letter-spacing: -0.02em; color: var(--text); text-decoration: none; }
.brand span { color: var(--accent); }
nav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: 15px; }
nav a:hover { color: var(--text); }
h1 { font-size: clamp(34px, 7vw, 52px); line-height: 1.08; letter-spacing: -0.03em; margin: 40px 0 16px; }
h2 { font-size: 22px; letter-spacing: -0.01em; margin: 40px 0 8px; }
h3 { font-size: 18px; margin: 24px 0 4px; }
p, li { color: var(--text); }
.lead { font-size: 20px; color: var(--muted); max-width: 34em; }
.muted { color: var(--muted); }
.meta { color: var(--muted); font-size: 15px; }
.summary { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 4px 22px; margin: 24px 0; }
.features { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); margin: 36px 0; }
.feature { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 18px; }
.feature strong { display: block; margin-bottom: 4px; }
.feature p { margin: 0; color: var(--muted); font-size: 15px; }
.cta { display: inline-block; background: var(--accent); color: #fff; text-decoration: none; font-weight: 600; padding: 12px 22px; border-radius: 999px; }
footer { border-top: 1px solid var(--border); margin-top: 64px; padding-top: 22px; padding-bottom: 40px; color: var(--muted); font-size: 14px; }
footer a { color: var(--muted); margin-right: 16px; }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; vertical-align: top; padding: 10px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; }
.table-wrap { overflow-x: auto; }