:root { --bg: #F4F6FA; --text: #17202B; --soft: #667085; --accent: #2E7D6B; }
@media (prefers-color-scheme: dark) { :root { --bg: #10141A; --text: #ECF0F5; --soft: #98A2B3; --accent: #4FC1A5; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.6 Inter, -apple-system, "Segoe UI", Roboto, system-ui, sans-serif; }
main { max-width: 640px; margin: 0 auto; padding: 48px 20px 64px; text-align: center; }
main.text { text-align: left; padding-top: 28px; }
.icon { width: 112px; height: 112px; border-radius: 26px; }
h1 { font-size: 34px; margin: 16px 0 4px; }
main.text h1 { margin-top: 8px; }
h2 { font-size: 20px; margin: 32px 0 6px; }
.lead { font-size: 20px; font-weight: 600; margin: 0 0 16px; }
.soft, footer { color: var(--soft); font-size: 15px; }
a { color: var(--accent); }
nav { margin: 28px 0 12px; }
ul { padding-left: 22px; }