:root {
  --navy: #0E1A2B; --bg: #F4F6FA; --card: #FFFFFF; --line: #E2E6EE; --ink: #0E1A2B; --muted: #5A6377;
  --indigo: #3B4CCA; --gold: #F5A524; --display: 'Montserrat', system-ui, sans-serif; --body: 'Inter', system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.7 var(--body); }
a { color: var(--indigo); }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; border-radius: 4px; }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
header { background: var(--navy); }
header .wrap { display: flex; align-items: center; gap: 16px; height: 72px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: #fff; font: 800 21px var(--display); letter-spacing: -0.02em; }
header nav { margin-left: auto; display: flex; gap: 6px; }
header nav a { color: #C9D0E2; text-decoration: none; font-weight: 600; font-size: 15px; padding: 8px 12px; border-radius: 8px; }
header nav a:hover, header nav a[aria-current="page"] { color: #fff; }
.title { background: var(--navy); color: #fff; padding: 40px 0 56px; }
.title h1 { font: 800 clamp(36px, 5vw, 56px)/1.05 var(--display); letter-spacing: -0.03em; margin: 0; }
.title p { margin: 14px 0 0; color: #C9D0E2; max-width: 60ch; }
.layout { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 56px; padding: 48px 24px 96px; }
.toc { position: sticky; top: 24px; align-self: start; font-size: 14.5px; }
.toc b { display: block; font: 700 15px var(--display); margin-bottom: 8px; }
.toc ol { margin: 0; padding-left: 20px; color: var(--muted); }
.toc li { margin: 3px 0; }
.toc a { color: var(--muted); text-decoration: none; }
.toc a:hover { color: var(--indigo); }
article { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 44px 52px; max-width: 760px; }
article h2 { font: 700 22px/1.3 var(--display); letter-spacing: -0.01em; margin: 40px 0 10px; scroll-margin-top: 20px; }
article h2:first-of-type { margin-top: 0; }
article p, article li { color: #2B3346; }
article p { margin: 0 0 14px; }
article ul { margin: 0 0 14px; padding-left: 22px; }
article li { margin: 6px 0; }
.summary { background: var(--bg); border-radius: 12px; padding: 18px 22px; margin-bottom: 32px; }
.summary p:last-child, .summary ul:last-child { margin-bottom: 0; }
.caps { text-transform: none; font-weight: 600; }
.fill { background: #FFF1C7; border-radius: 4px; padding: 0 4px; font-weight: 600; }
.meta { color: var(--muted); font-size: 15px; }
footer { background: var(--navy); color: #8F98AF; font-size: 14.5px; }
footer .wrap { display: flex; gap: 20px; justify-content: space-between; align-items: center; padding-top: 26px; padding-bottom: 26px; flex-wrap: wrap; }
footer nav { display: flex; gap: 18px; flex-wrap: wrap; }
footer a { text-decoration: none; color: #C9D0E2; }
footer a:hover { color: #fff; }
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; gap: 24px; padding-top: 28px; }
  .toc { position: static; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; }
  article { padding: 28px 22px; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .wrap, .layout { padding-left: 16px; padding-right: 16px; }
  header nav a.hide-sm { display: none; }
}
@media print {
  header, footer, .toc { display: none; }
  .title { background: none; color: #000; padding: 0 0 16px; }
  .title p { color: #333; }
  .layout { display: block; padding: 0; }
  article { border: 0; padding: 0; max-width: none; }
}