:root { color-scheme: light dark; --accent: #3D6E99; }
* { box-sizing: border-box; }
body { margin: 0; font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", sans-serif; color: CanvasText; background: Canvas; }
header, main, footer { max-width: 760px; margin: 0 auto; padding: 0 22px; }
header { display: flex; align-items: center; justify-content: space-between; padding-top: 18px; padding-bottom: 18px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; color: inherit; text-decoration: none; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
nav a { margin-left: 18px; color: inherit; opacity: .75; text-decoration: none; }
nav a:hover { opacity: 1; }
main { padding-bottom: 48px; }
h1 { font-size: 36px; line-height: 1.15; margin: 24px 0 12px; }
h2 { font-size: 24px; margin: 36px 0 8px; }
h3 { font-size: 18px; margin: 0 0 6px; }
a { color: var(--accent); }
@media (prefers-color-scheme: dark) { :root { --accent: #7DB2E0; } }
li { margin: 6px 0; }
code { font: 15px ui-monospace, Menlo, monospace; background: rgba(127,127,127,.15); padding: 1px 5px; border-radius: 5px; }
.hero { text-align: center; padding: 40px 0 12px; }
.hero-icon { width: 120px; height: 120px; border-radius: 27px; box-shadow: 0 8px 30px rgba(0,0,0,.18); }
.hero h1 { font-size: 48px; margin-bottom: 4px; }
.tagline { font-size: 24px; font-weight: 600; opacity: .8; margin-top: 0; }
.cta { font-weight: 600; color: var(--accent); }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; margin-top: 32px; }
.features div { background: rgba(127,127,127,.1); border-radius: 18px; padding: 20px; }
.features p { margin: 0; opacity: .85; }
footer { border-top: 1px solid rgba(127,127,127,.25); padding-top: 18px; padding-bottom: 32px; font-size: 14px; opacity: .7; }
footer a { color: inherit; }