.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  min-height: var(--header-height);
  background: rgba(7, 9, 16, 0.88);
  border-bottom: 1px solid var(--color-line);
  backdrop-filter: blur(16px);
}

.site-header__inner,
.site-footer__inner,
.section__inner,
.hero__inner {
  width: min(100% - 2rem, var(--content-width));
  margin-inline: auto;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  gap: 1.5rem;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
}

.site-brand__mark {
  display: grid;
  width: 2.75rem;
  height: 2.75rem;
  place-items: center;
  color: var(--color-night);
  font-family: var(--font-serif);
  font-size: 1.35rem;
  background: linear-gradient(135deg, var(--color-gold-soft), var(--color-gold));
  border: 1px solid rgba(255, 255, 255, 0.38);
}

.site-brand__text {
  display: grid;
  line-height: 1.15;
}

.site-brand__name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  letter-spacing: 0.08em;
}

.site-brand__sub {
  color: var(--color-dim);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero {
  position: relative;
  display: grid;
  min-height: calc(100svh - var(--header-height));
  overflow: hidden;
  isolation: isolate;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  align-content: center;
  max-width: 980px;
  min-height: calc(100svh - var(--header-height));
  padding-block: clamp(6rem, 14vw, 9rem);
}

.hero__lead {
  max-width: 720px;
  color: var(--color-muted);
  font-size: clamp(1rem, 2vw, 1.22rem);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.4rem;
}

.section {
  padding-block: var(--space-section);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 2.4rem;
}

.section-heading p,
.prose {
  color: var(--color-muted);
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}

.site-footer {
  border-top: 1px solid var(--color-line);
  background: rgba(5, 6, 10, 0.9);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 2rem;
  color: var(--color-dim);
}

.site-footer__brand {
  margin: 0;
  color: var(--color-gold-soft);
  font-family: var(--font-serif);
  letter-spacing: 0.14em;
}

.site-footer__note {
  margin: 0;
}

@media (max-width: 760px) {
  .site-header__inner {
    min-height: 68px;
  }

  .site-brand__sub {
    display: none;
  }

  .hero,
  .hero__inner {
    min-height: calc(92svh - 68px);
  }

  .split-layout {
    grid-template-columns: 1fr;
  }
}