:root {
  --bg: #ffffff;
  --fg: #1a1c21;
  --dim: #6b7280;
  --line: #e8e9ee;
  --accent: #2f5fd0;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0e1014; --fg: #e8eaf0; --dim: #9198a8; --line: #232733; --accent: #7aa6ff; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
main { max-width: 640px; margin: 0 auto; padding: 72px 24px 56px; }
header { margin-bottom: 44px; }
h1 { font-size: 30px; line-height: 1.2; letter-spacing: -0.02em; margin: 0 0 10px; font-weight: 650; }
.tagline { color: var(--dim); margin: 0; font-size: 16px; }
section { margin-bottom: 36px; }
h2 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--dim);
  font-weight: 600;
  margin: 0 0 14px;
}
p { margin: 0 0 16px; }
p:last-child { margin-bottom: 0; }
.dim { color: var(--dim); }
ul.plain { list-style: none; padding: 0; margin: 0; }
ul.plain li { padding: 9px 0; border-top: 1px solid var(--line); }
ul.plain li:first-child { border-top: 0; }
em { font-style: normal; border-bottom: 1px solid var(--line); }
footer {
  margin-top: 56px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  color: var(--dim);
  font-size: 13px;
}