:root {
  --blue: #0066ff;
  --amber: #fbb731;
  --magenta: #f72585;
  --lime: #9ef01a;
  --ink: #0b1b3a;
  --muted: #4a5878;
  --paper: #ffffff;
  --panel: #f3f6fc;
  --rule: #dfe5f1;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #eef2fb;
    --muted: #a9b4cc;
    --paper: #0a1224;
    --panel: #121d36;
    --rule: #22304f;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

a { color: var(--blue); }
@media (prefers-color-scheme: dark) { a { color: #6aa5ff; } }

.band {
  background: var(--blue);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.band::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -8px;
  width: 220px;
  height: 46px;
  background: var(--magenta);
  transform: rotate(-20deg);
}

.band .wrap { position: relative; z-index: 1; padding-top: 28px; padding-bottom: 36px; }

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: .02em;
}

.brand img { width: 40px; height: 40px; border-radius: 10px; }

.band h1 { font-size: clamp(30px, 6vw, 46px); line-height: 1.1; margin: 28px 0 10px; }

.band p { margin: 0; max-width: 34em; font-size: 19px; opacity: .95; }

.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }

nav.links { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 22px; }
nav.links a { color: #fff; font-weight: 600; }

main.wrap { padding-top: 32px; padding-bottom: 48px; }

h2 { font-size: 22px; margin: 32px 0 8px; }
h2::before {
  content: "";
  display: inline-block;
  width: 12px;
  height: 12px;
  margin-right: 10px;
  background: var(--amber);
  border-radius: 12px 12px 0 0;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: 14px;
  padding: 16px 18px;
  margin: 16px 0;
}

.panel strong { color: var(--ink); }

ol, ul { padding-left: 1.3em; }
li { margin: 6px 0; }

.muted { color: var(--muted); font-size: 15px; }

footer {
  border-top: 1px solid var(--rule);
  padding: 20px 0 36px;
  color: var(--muted);
  font-size: 14px;
}

footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between; }