#app {
  position: relative;
  z-index: 1;
}

.grid-shell {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: var(--grid-size) var(--grid-size);
  mask-image: linear-gradient(to bottom, black, transparent 82%);
  opacity: 0.55;
}

.section-frame,
.site-nav,
.site-footer {
  width: min(var(--container), calc(100% - 32px));
  margin-inline: auto;
}

.site-nav {
  position: sticky;
  top: 14px;
  z-index: 10;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-6);
  min-height: 68px;
  margin-top: 14px;
  padding: 10px var(--space-3);
  border: var(--line-width) solid var(--line-strong);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  box-shadow: var(--shadow-offset) var(--shadow);
  backdrop-filter: blur(14px);
}

.mobile-nav-panel {
  display: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(500px, 1.1fr);
  gap: clamp(28px, 4vw, 64px);
  align-items: center;
  min-height: calc(100vh - 110px);
  padding: 56px 0 var(--space-12);
}

.hero-copy {
  max-width: 760px;
}

.content-section {
  padding: 84px 0 0;
}

.section-heading {
  max-width: 820px;
  margin-bottom: 28px;
}

.card-grid {
  display: grid;
  gap: 16px;
}

.card-grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card-grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.site-footer {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: clamp(36px, 6vw, 96px);
  margin-top: 84px;
  padding: 36px 0 46px;
  border-top: 1px solid var(--line);
}

@media (max-width: 900px) {
  .hero,
  .card-grid.three,
  .card-grid.two {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 56px;
  }
}

@media (max-width: 640px) {
  .section-frame,
  .site-nav,
  .site-footer {
    width: min(100% - 22px, var(--container));
  }

  .site-nav {
    grid-template-columns: 1fr auto;
    align-items: start;
    top: 8px;
    gap: 10px;
    min-height: 58px;
    padding: 8px;
  }

  .brand span,
  .nav-links,
  .nav-actions .button-small {
    display: none;
  }

  .mobile-nav-panel {
    grid-column: 1 / -1;
  }

  .content-section {
    padding-top: 58px;
  }

  .site-footer {
    flex-direction: column;
    gap: 28px;
    margin-top: 58px;
    padding-bottom: 34px;
  }

  .footer-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
  }
}

@media (max-width: 420px) {
  .section-frame,
  .site-nav,
  .site-footer {
    width: min(100% - 18px, var(--container));
  }

  .footer-groups {
    grid-template-columns: 1fr;
  }
}