:root {
  --blue: #2457f5;
  --blue-dark: #1838c9;
  --ink: #0f172a;
  --muted: #5b6475;
  --bg: #f4f6fb;
  --card: #ffffff;
  --radius: 20px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --ink: #f3f5fa; --muted: #a3acbd; --bg: #0b1020; --card: #151b2e; }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--blue); }
.wrap { max-width: 760px; margin: 0 auto; padding: 32px 22px 64px; }
header.site { display: flex; align-items: center; gap: 12px; margin-bottom: 28px; }
header.site img { width: 40px; height: 40px; border-radius: 10px; }
header.site a { text-decoration: none; color: var(--ink); font-weight: 700; font-size: 20px; }
.hero { text-align: center; padding: 40px 0 24px; }
.hero img.icon { width: 112px; height: 112px; border-radius: 26px; box-shadow: 0 12px 32px rgba(36, 87, 245, .28); }
h1 { font-size: clamp(30px, 6vw, 44px); line-height: 1.12; margin: 22px 0 12px; letter-spacing: -0.02em; }
h2 { font-size: 24px; margin: 36px 0 8px; }
h3 { font-size: 18px; margin: 24px 0 4px; }
p.lead { font-size: 19px; color: var(--muted); max-width: 560px; margin: 0 auto 26px; }
.btn {
  display: inline-block; padding: 14px 24px; border-radius: 999px; font-weight: 600;
  text-decoration: none; background: var(--blue); color: #fff; border: 0; font-size: 17px; cursor: pointer;
}
.btn.secondary { background: transparent; color: var(--blue); box-shadow: inset 0 0 0 2px var(--blue); }
.btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin: 8px 0 20px; }
.card { background: var(--card); border-radius: var(--radius); padding: 24px; margin: 18px 0; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 14px; }
.grid .card { margin: 0; }
.muted { color: var(--muted); }
code.token { font: 600 18px ui-monospace, SFMono-Regular, Menlo, monospace; background: rgba(36, 87, 245, .1); padding: 4px 10px; border-radius: 8px; word-break: break-all; }
footer.site { margin-top: 48px; padding-top: 20px; border-top: 1px solid rgba(127, 127, 127, .25); font-size: 14px; color: var(--muted); display: flex; gap: 18px; flex-wrap: wrap; }
.legal h2 { font-size: 20px; }
.legal li { margin: 4px 0; }
.note { font-size: 14px; color: var(--muted); }