:root { color-scheme: dark; font: 16px/1.65 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background: #101316; color: #eef2f3; }
* { box-sizing: border-box; }
body { margin: 0; }
a { color: #97d6df; text-underline-offset: .2em; }
a:hover { color: #d0f5f8; }
.shell { width: min(100% - 2.5rem, 880px); margin: auto; }
header, footer { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
header { padding: 1.5rem 0; border-bottom: 1px solid #344047; }
footer { margin: 4rem 0 2rem; padding-top: 1.25rem; border-top: 1px solid #344047; color: #a9b8bd; font-size: .875rem; }
.brand { color: #fff; font-weight: 720; letter-spacing: -.03em; text-decoration: none; }
.brand span { color: #97d6df; font-weight: 500; }
nav { display: flex; gap: 1.2rem; }
nav a { text-decoration: none; }
nav a[aria-current] { color: #fff; }
main { padding-top: 4rem; }
.eyebrow { color: #97d6df; font-size: .75rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; }
h1 { max-width: 14ch; margin: .7rem 0 1.4rem; font-size: clamp(2.6rem, 7vw, 5rem); line-height: 1.04; letter-spacing: -.055em; }
h2 { margin: 0 0 .75rem; font-size: 1.35rem; line-height: 1.25; }
p { margin: 0 0 1rem; }
.lead { max-width: 43rem; color: #c9d5d9; font-size: 1.22rem; }
.card { margin-top: 1.5rem; padding: 1.5rem; border: 1px solid #344047; border-radius: .9rem; background: #192026; }
.card p:last-child { margin-bottom: 0; }
.prose { max-width: 48rem; }
.prose h1 { max-width: none; }
.prose h2 { margin-top: 2.5rem; }
.prose p { color: #c9d5d9; }
@media (max-width: 600px) { header, footer { align-items: flex-start; flex-direction: column; } main { padding-top: 2.5rem; } .card { padding: 1.2rem; } }