:root {
  --brand: #2f4fd6;
  --brand-soft: #eef2ff;
  --ink: #1d2433;
  --muted: #5c6577;
  --line: #e4e7ee;
  --bg: #f7f8fb;
  --card: #ffffff;
  --tip: #e8f6ef;
  --tip-line: #2e9e6a;
  --warn: #fff4e5;
  --warn-line: #d9822b;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: "Cairo", system-ui, sans-serif; font-size: 17px; line-height: 1.85;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

.top {
  position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 16px;
  padding: 10px 20px; background: var(--card); border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 700; font-size: 18px; }
.brand:hover { text-decoration: none; }
.brand img { height: 34px; width: auto; }
.menu { display: none; border: 1px solid var(--line); background: var(--card); border-radius: 8px; font-size: 20px; padding: 2px 10px; cursor: pointer; }
.search { position: relative; margin-inline-start: auto; width: min(360px, 50vw); }
.search input {
  width: 100%; font: inherit; font-size: 15px; padding: 7px 14px;
  border: 1px solid var(--line); border-radius: 999px; background: var(--bg);
}
.search input:focus { outline: 2px solid var(--brand); outline-offset: 1px; background: #fff; }
#results {
  position: absolute; inset-inline: 0; top: calc(100% + 6px); background: #fff; border: 1px solid var(--line);
  border-radius: 12px; box-shadow: 0 12px 30px rgba(20, 30, 60, .12); max-height: 60vh; overflow: auto; display: none;
}
#results.open { display: block; }
#results a { display: block; padding: 10px 14px; color: var(--ink); border-bottom: 1px solid var(--line); }
#results a:last-child { border-bottom: 0; }
#results a:hover, #results a.active { background: var(--brand-soft); text-decoration: none; }
#results small { display: block; color: var(--muted); font-size: 13px; }
#results .empty { padding: 12px 14px; color: var(--muted); }

.layout { display: flex; max-width: 1180px; margin: 0 auto; }
.side {
  position: sticky; top: 57px; align-self: flex-start; width: 260px; flex: none;
  height: calc(100vh - 57px); overflow: auto; padding: 20px 16px 40px; border-inline-end: 1px solid var(--line);
}
.side .home { display: block; font-weight: 700; margin-bottom: 14px; }
.nav-group h4 { margin: 18px 0 6px; font-size: 13px; color: var(--muted); letter-spacing: .02em; }
.nav-group ul { list-style: none; margin: 0; padding: 0; }
.nav-group a { display: block; padding: 5px 10px; border-radius: 8px; color: var(--ink); font-size: 15px; line-height: 1.5; }
.nav-group a:hover { background: var(--brand-soft); text-decoration: none; }
.nav-group a[aria-current] { background: var(--brand-soft); color: var(--brand); font-weight: 700; }

main { flex: 1; min-width: 0; padding: 28px 40px 80px; }
article { max-width: 760px; }
h1 { font-size: 30px; line-height: 1.4; margin: 0 0 8px; }
h2 { font-size: 22px; margin: 36px 0 10px; padding-top: 6px; }
h3 { font-size: 18px; margin: 28px 0 6px; color: var(--brand); }
.crumb { margin: 0; color: var(--muted); font-size: 14px; }
.lead { font-size: 18px; color: var(--muted); margin: 0 0 8px; }
.time { margin: 0; color: var(--muted); font-size: 15px; }
hr { border: 0; border-top: 1px solid var(--line); margin: 28px 0; }
hr + h2 { margin-top: 0; }
figure a { display: block; cursor: zoom-in; }
code { background: var(--brand-soft); padding: 1px 6px; border-radius: 6px; font-size: .9em; }
strong { font-weight: 700; }
ul, ol { padding-inline-start: 24px; }

figure { margin: 14px 0 22px; }
figure img {
  display: block; max-width: 100%; height: auto; border: 1px solid var(--line);
  border-radius: 12px; box-shadow: 0 6px 20px rgba(20, 30, 60, .08); background: #fff;
}
figcaption { color: var(--muted); font-size: 14px; margin-top: 6px; }

.callout { margin: 14px 0; padding: 10px 16px; border-radius: 10px; border-inline-start: 4px solid var(--brand); background: var(--brand-soft); }
.callout p { margin: 0; }
.callout.tip { background: var(--tip); border-color: var(--tip-line); }
.callout.warning { background: var(--warn); border-color: var(--warn-line); }

.pager { display: flex; gap: 12px; max-width: 760px; margin-top: 40px; }
.pager a { flex: 1; padding: 12px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--card); color: var(--ink); }
.pager a:hover { border-color: var(--brand); text-decoration: none; }
.pager small { display: block; color: var(--muted); font-size: 13px; }
.pager .next { text-align: left; }

.toc h2 { margin-top: 30px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; }
.card { display: block; padding: 14px 16px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; color: var(--ink); }
.card:hover { border-color: var(--brand); text-decoration: none; box-shadow: 0 6px 18px rgba(20, 30, 60, .08); }
.card strong { display: block; margin-bottom: 4px; }
.card span { color: var(--muted); font-size: 14px; line-height: 1.6; }

@media (max-width: 860px) {
  .menu { display: block; }
  .brand span { display: none; }
  .search { width: auto; flex: 1; }
  .side {
    position: fixed; top: 57px; inset-inline-start: 0; z-index: 9; background: var(--card);
    transform: translateX(100%); transition: transform .2s; box-shadow: 0 10px 30px rgba(0, 0, 0, .15);
  }
  body.nav-open .side { transform: none; }
  main { padding: 20px 16px 60px; }
  h1 { font-size: 25px; }
  .pager { flex-direction: column; }
}

.top .links { display: flex; gap: 18px; font-size: 15px; }
.meta { color: var(--muted); font-size: 14px; margin: -6px 0 18px; }
.cta { margin: 36px 0 18px; padding: 22px 24px; border-radius: 14px; background: var(--brand-soft); border: 1px solid #d6defc; }
.cta h2 { margin: 0 0 6px; font-size: 20px; }
.cta p { margin: 0 0 14px; }
.cta a.btn { display: inline-block; background: #f0871e; color: #fff; font-weight: 700; padding: 9px 22px; border-radius: 999px; }
.cta a.btn:hover { text-decoration: none; opacity: .92; }
.disclaimer { color: var(--muted); font-size: 14px; }
@media (max-width: 860px) { .top .links { display: none; } }