*, *::before, *::after { box-sizing: border-box; }
:root {
  --primary: #0b1929;
  --primary-darkest: #060f1a;
  --primary-shade: #1e3a5f;
  --secondary: #ebbd3d;
  --secondary-dark: #c9a030;
  --paper: #f4f7fb;
  --white: #ffffff;
  --muted: #617085;
  --line: rgba(11,25,41,.13);
  --site-width: 1120px;
}
body {
  margin: 0;
  color: var(--primary);
  background: var(--paper);
  font-family: "Open Sans", Arial, sans-serif;
  line-height: 1.68;
}
a { color: var(--primary-shade); font-weight: 800; }
.container { width: min(var(--site-width), calc(100% - 40px)); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  min-height: 84px;
  padding: 16px 40px 0;
  background: rgba(6,15,26,.94);
  border-bottom: 1px solid rgba(255,255,255,.08);
  backdrop-filter: blur(16px);
}
.header-inner {
  min-height: 68px;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  position: relative;
}
.logo img { height: 144px; width: auto; margin: -34px 0 -26px; display: block; }
.site-header nav {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.nav-item { position: relative; }
.nav-link {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 9px 16px;
  border-radius: 8px;
  color: rgba(255,255,255,.78);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}
.nav-link:hover, .nav-link.active { color: #fff; background: rgba(255,255,255,.08); }
.nav-link .arrow { font-size: 9px; opacity: .6; }
.dropdown {
  position: absolute;
  top: calc(100% + 2px);
  left: -8px;
  min-width: 240px;
  padding: 6px 0 8px;
  border: 1px solid rgba(255,255,255,.1);
  border-top: 2px solid var(--secondary);
  border-radius: 0 0 10px 10px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-6px);
  background: rgba(0,0,0,.96);
  box-shadow: 0 16px 40px rgba(0,0,0,.4);
  backdrop-filter: blur(16px);
  transition: opacity .2s, transform .2s;
}
.nav-item:hover .dropdown,
.nav-item:focus-within .dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.dropdown-item {
  display: block;
  padding: 14px 20px;
  color: rgba(255,255,255,.7);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
}
.dropdown-item:hover { color: #fff; background: rgba(255,255,255,.06); }
.header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 14px;
}
.article {
  width: min(820px, calc(100% - 40px));
  margin: 0 auto;
  padding: 56px 0 76px;
}
.back {
  display: inline-flex;
  margin-bottom: 28px;
  color: var(--secondary-dark);
  font-size: 14px;
  text-decoration: none;
}
.kicker {
  margin: 0 0 14px;
  color: var(--secondary-dark);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .13em;
  text-transform: uppercase;
}
h1 {
  margin: 0;
  font-size: clamp(38px, 6vw, 68px);
  line-height: 1;
  letter-spacing: -.04em;
}
.lead {
  margin: 24px 0 30px;
  color: var(--primary-shade);
  font-size: 20px;
  line-height: 1.55;
}
.toc {
  display: grid;
  gap: 8px;
  margin: 34px 0 42px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}
.toc strong { margin-bottom: 4px; }
.toc a { color: var(--primary-shade); font-size: 14px; text-decoration: none; }
h2 {
  margin: 42px 0 12px;
  font-size: 30px;
  line-height: 1.15;
  letter-spacing: -.02em;
}
h3 {
  margin: 24px 0 8px;
  font-size: 20px;
  line-height: 1.25;
}
p { margin: 0 0 18px; color: #24364d; }
.faq {
  margin-top: 48px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}
.related {
  display: grid;
  gap: 10px;
  margin-top: 42px;
  padding: 22px;
  border-radius: 8px;
  background: var(--primary-darkest);
  color: #fff;
}
.related strong { color: var(--secondary); }
.related a { color: rgba(255,255,255,.86); text-decoration: none; }
@media (max-width: 680px) {
  .site-header { padding: 12px 20px 0; }
  .site-header nav { position: static; transform: none; margin-left: auto; overflow-x: auto; max-width: calc(100vw - 160px); }
  .logo img { height: 104px; margin: -24px 0 -18px; }
  .header-actions { margin-left: 0; }
}