.container {
  width: min(calc(100% - 48px), var(--container));
  margin: 0 auto;
}

.topbar {
  border-bottom: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(17, 19, 21, 0.82);
  color: rgba(237, 241, 244, 0.82);
  backdrop-filter: blur(18px);
}

.topbar__inner {
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  font-size: 0.86rem;
}

.topbar__meta {
  display: flex;
  gap: 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid transparent;
  background: rgba(245, 241, 234, 0.64);
  backdrop-filter: blur(16px);
  transition:
    background var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
}

.site-header.is-scrolled {
  border-color: var(--color-line);
  background: rgba(249, 246, 240, 0.92);
  box-shadow: 0 10px 30px rgba(17, 19, 21, 0.06);
}

.header__inner {
  min-height: var(--header-height);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
}

.main-nav {
  display: flex;
  justify-content: center;
  gap: 28px;
}

.main-nav a {
  position: relative;
  padding: 8px 0;
  color: var(--color-text-soft);
  transition: color var(--transition);
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--color-text);
}

.main-nav a:hover::after,
.main-nav a:focus-visible::after {
  transform: scaleX(1);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.site-footer {
  padding: 60px 0 30px;
  background: #11171b;
  color: rgba(237, 241, 244, 0.78);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 36px;
}

.footer__grid h3 {
  margin-bottom: 16px;
  font-family: var(--font-display);
  font-size: 1rem;
  color: #ffffff;
}

.footer__grid ul {
  display: grid;
  gap: 12px;
}

.footer__grid li,
.footer__grid a,
.footer__about {
  color: rgba(237, 241, 244, 0.72);
  line-height: 1.8;
}

.footer__bottom {
  margin-top: 36px;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.88rem;
}