:root { color-scheme: light dark; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: #243146; background: #f5f7fb; }
* { box-sizing: border-box; }
body { margin: 0; font-size: 17px; line-height: 1.75; }
header, main, footer { max-width: 850px; margin-inline: auto; padding: 28px 32px; }
header { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px; }
.brand { font-size: 21px; font-weight: 700; letter-spacing: -.02em; }
.app-icon { display: block; border-radius: 24px; margin-bottom: 28px; }
.contact-link { display: inline-block; padding-block: 10px; font-weight: 600; }
footer nav { margin-bottom: 12px; }
label { display: block; font-size: 13px; margin-bottom: 5px; }
select { font: inherit; font-size: 16px; padding: 9px 36px 9px 12px; min-height: 44px; border: 1px solid #8a96a8; border-radius: 9px; background: #fff; color: inherit; }
main { background: #fff; border: 1px solid #e1e6ee; border-radius: 16px; padding-block: 28px 44px; }
h1 { font-size: clamp(1.7rem, 5vw, 2.2rem); line-height: 1.3; letter-spacing: -.025em; margin: 0 0 24px; }
h2 { font-size: 1.3rem; line-height: 1.45; margin: 36px 0 12px; }
p, ul, ol { margin: 0 0 20px; }
li { margin: 7px 0; }
a { color: #2054ae; text-underline-offset: 3px; overflow-wrap: anywhere; }
article + article { border-top: 1px solid #8a96a8; padding-top: 32px; margin-top: 40px; }
article[hidden] { display: none; }
main article:only-of-type, main article[data-selected] { border-top: none; margin-top: 0; padding-top: 0; }
footer { color: #526078; font-size: 14px; }
:focus-visible { outline: 3px solid #2054ae; outline-offset: 4px; }
.skip-link { position: absolute; top: -100px; left: 16px; padding: 10px; background: #fff; }
.skip-link:focus { top: 10px; }
@media (max-width: 600px) { header, footer { padding: 20px; } main { border-radius: 0; border-inline: 0; padding: 26px 20px; } }
@media (prefers-color-scheme: dark) {
  :root { color: #e6ebf4; background: #121820; }
  main, select, .skip-link { background: #1b2330; }
  main { border-color: #39475b; }
  a { color: #98c1ff; }
  footer { color: #bdc7d8; }
  :focus-visible { outline-color: #98c1ff; }
}
@media print { :root, main { background: white; color: black; } header, footer, .skip-link { display: none; } main { border: 0; max-width: none; } a { color: inherit; } }