:root { color-scheme: dark; }
body { margin: 0; background: #06060e; color: #d5d9e6; }
.learn-shell { max-width: 960px; margin: 0 auto; padding: 32px 24px; font-family: system-ui, sans-serif; line-height: 1.85; }
.learn-shell h1 { color: #fff; font-size: clamp(24px, 4vw, 38px); line-height: 1.4; margin: 8px 0 16px; }
.learn-shell h2 { color: #89e9f4; font-size: 24px; line-height: 1.5; margin: 36px 0 16px; }
.learn-shell h3 { color: #fff; font-size: 18px; margin: 24px 0 8px; }
.learn-shell p { margin: 12px 0; }
.learn-shell a { color: #89e9f4; text-underline-offset: 4px; }
.learn-shell a:hover { color: #fff; }
.learn-shell a:focus-visible { outline: 2px solid #ffaa00; outline-offset: 5px; }
.learn-shell nav { display: flex; flex-wrap: wrap; gap: 8px 24px; margin-top: 20px; }
.learn-shell ul, .learn-shell ol { padding-left: 24px; }
.learn-shell li { margin: 8px 0; }
.learn-shell section { scroll-margin-top: 20px; }
.eyebrow { color: #ffaa00; font-size: 13px; letter-spacing: 2px; }
.home-intro { padding-bottom: 24px; }
.home-guide { border-top: 1px solid #263047; padding-bottom: 48px; }
.guide-cover { margin: 28px 0; }
.guide-cover img { display: block; width: 100%; height: auto; border-radius: 16px; }
.guide-cover figcaption { margin-top: 8px; }
.guide-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 12px; margin: 24px 0; }
.guide-cards a { display: block; padding: 16px; border: 1px solid #263047; border-radius: 12px; background: #101322; }
.small, .learn-shell caption { font-size: 14px; color: #b4bed2; }
.table-scroll { overflow-x: auto; margin: 20px 0; }
.learn-shell table { border-collapse: collapse; width: 100%; min-width: 680px; font-size: 14px; }
.learn-shell caption { text-align: left; padding-bottom: 12px; }
.learn-shell th, .learn-shell td { padding: 12px; border: 1px solid #35405a; text-align: left; }
.learn-shell th { background: #151c2d; color: #fff; }
.learn-shell code { color: #ffcd73; }
.learn-shell footer { border-top: 1px solid #263047; margin-top: 40px; padding-top: 20px; }
@media (max-width: 640px) { .learn-shell { padding: 24px 16px; } .learn-shell h2 { font-size: 21px; } }