* { box-sizing: border-box; }
:root { color-scheme: light; --ink: #172b37; --muted: #465c6a;
  --accent: #17686e; --line: #d5e1e5; --paper: #f5f8fa; }
body { margin: 0; color: var(--ink); background: var(--paper);
  font: 17px/1.65 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
a { color: var(--accent); text-underline-offset: .18em; overflow-wrap: anywhere; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
header { background: #fff; border-bottom: 1px solid var(--line); }
.topbar { max-width: 1020px; margin: 0 auto; padding: 23px 28px;
  display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
.brand { font-weight: 750; font-size: 19px; color: var(--ink); text-decoration: none; }
nav { display: flex; gap: 24px; flex-wrap: wrap; font-size: 15px; }
nav a[aria-current="page"] { color: var(--ink); font-weight: 700; }
main { max-width: 900px; margin: 0 auto; padding: 55px 28px 64px; }
.kicker { color: var(--accent); text-transform: uppercase; font-size: 12px;
  font-weight: 750; letter-spacing: .15em; margin: 0 0 10px; }
h1 { font-size: clamp(32px, 5vw, 47px); line-height: 1.12; letter-spacing: -.025em;
  margin: 0 0 20px; max-width: 750px; }
h2 { font-size: 23px; line-height: 1.3; margin: 0 0 12px; }
p { margin: 0 0 15px; }
.lead { font-size: 21px; color: var(--muted); line-height: 1.5; max-width: 750px; }
.notice { margin: 28px 0; background: #e8f2f3; border-left: 4px solid var(--accent);
  padding: 20px 24px; border-radius: 0 9px 9px 0; }
.notice p:last-child, section p:last-child { margin-bottom: 0; }
section { padding: 28px 0; border-bottom: 1px solid var(--line); }
section:last-of-type { border-bottom: 0; }
.meta, footer { font-size: 14px; color: var(--muted); }
ul { padding-left: 23px; margin: 0 0 15px; }
li { margin: 6px 0; }
code { font: .9em ui-monospace, Consolas, monospace; overflow-wrap: anywhere;
  background: #e8eef1; border-radius: 4px; padding: 2px 5px; }
footer { max-width: 900px; margin: 0 auto; padding: 23px 28px 42px;
  border-top: 1px solid var(--line); }
footer p { margin: 0; }
@media (max-width: 540px) { .topbar { padding: 20px; } main { padding: 36px 20px; }
  nav { gap: 19px; } footer { padding: 22px 20px; } .notice { padding: 18px; } }