:root { color-scheme: light; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background: #f6fbff; color: #173652; line-height: 1.65; }
* { box-sizing: border-box; }
body { margin: 0; border-top: 8px solid #378fd1; background: repeating-linear-gradient(150deg, #fff 0, #fff 30px, #eff8ff 30px, #eff8ff 33px); min-height: 100vh; }
main { width: min(100% - 40px, 780px); margin: 40px auto; padding: 32px; background: #fff; border: 1px solid #d8eaf8; border-radius: 24px; box-shadow: 0 12px 44px #1748730a; }
nav { display: flex; flex-wrap: wrap; gap: 24px; margin-bottom: 48px; font-weight: 600; }
a { color: #1766a2; text-underline-offset: 4px; }
a:focus-visible { outline: 3px solid #e7543d; outline-offset: 5px; }
.brand { color: inherit; text-decoration: none; }
h1 { font-size: clamp(2rem, 6vw, 3.5rem); letter-spacing: -0.04em; line-height: 1.1; margin: 12px 0 24px; }
h2 { font-size: 1.2rem; margin-top: 32px; }
.intro { font-size: 1.2rem; }
.muted, footer { color: #4c6378; font-size: .9rem; }
footer { border-top: 1px solid #d8eaf8; margin-top: 48px; padding-top: 20px; }
.icon { width: 104px; height: 104px; border-radius: 24px; margin-bottom: 18px; }
.eyebrow { color: #b33524; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; font-size: .8rem; }
.card { background: #edf7ff; border: 1px solid #d8eaf8; border-radius: 18px; padding: 20px 24px; margin-top: 24px; }
.card h2 { margin-top: 0; }
.button { display: inline-block; padding: 10px 20px; background: #216fae; color: #fff; border-radius: 12px; text-decoration: none; font-weight: 600; }
@media (max-width: 500px) { main { width: calc(100% - 24px); padding: 22px; margin-top: 20px; } nav { margin-bottom: 30px; gap: 18px; } }