.container {
  width: 100%;
  max-width: calc(var(--container-max) + 2 * var(--container-gutter));
  margin-inline: auto;
  padding-inline: var(--container-gutter);
}

.section {
  padding-block: var(--section-padding);
  background: var(--color-bg);
}

.section--alt {
  background: var(--color-bg-alt);
  border-block: 1px solid var(--color-border);
}

.section.theme-dark {
  border-block: 0;
}

.section__footer {
  margin-top: var(--space-7);
}

.grid {
  display: grid;
  gap: var(--space-5);
}

@media (min-width: 40em) {
  .grid--2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid--3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 60em) {
  .grid--3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-height);
  background: var(--color-bg);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.site-header.is-scrolled {
  border-bottom-color: var(--header-border);
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  height: 100%;
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  color: var(--color-fg);
  flex-shrink: 0;
}

.site-header__brand:hover {
  color: var(--color-fg);
}

.nav-toggle {
  display: inline-grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  margin-right: calc(-1 * var(--space-2));
  padding: 0;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-fg);
  cursor: pointer;
}

.nav-toggle__bar {
  transition: transform var(--transition), opacity var(--transition);
  transform-origin: center;
  transform-box: fill-box;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar--top {
  transform: translateY(4px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar--bottom {
  transform: translateY(-4px) rotate(-45deg);
}

.site-nav {
  position: fixed;
  inset: var(--header-height) 0 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  padding: var(--space-6) var(--container-gutter) var(--space-7);
  overflow-y: auto;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-0.5rem);
  transition: opacity var(--transition), transform var(--transition), visibility 0s linear 180ms;
}

.site-header.is-open .site-nav {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition: opacity var(--transition), transform var(--transition), visibility 0s;
}

.site-nav__list {
  display: flex;
  flex-direction: column;
}

.site-nav__link {
  display: block;
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-fg);
}

.site-nav__link:hover,
.site-nav__link.is-active {
  color: var(--color-primary);
}

.site-nav__cta {
  width: 100%;
}

body.nav-open {
  overflow: hidden;
}

@media (min-width: 60em) {
  .site-header {
    background: var(--header-bg);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    backdrop-filter: saturate(180%) blur(12px);
  }

  .nav-toggle {
    display: none;
  }

  .site-nav {
    position: static;
    flex-direction: row;
    align-items: center;
    gap: var(--space-6);
    padding: 0;
    overflow: visible;
    background: none;
    border: 0;
    opacity: 1;
    visibility: visible;
    transform: none;
    transition: none;
  }

  .site-nav__list {
    flex-direction: row;
    gap: var(--space-1);
  }

  .site-nav__link {
    position: relative;
    padding: var(--space-2) var(--space-3);
    border: 0;
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-muted);
  }

  .site-nav__link:hover,
  .site-nav__link.is-active {
    color: var(--color-fg);
  }

  .site-nav__link.is-active::after {
    content: "";
    position: absolute;
    left: var(--space-3);
    right: var(--space-3);
    bottom: -2px;
    height: 2px;
    border-radius: 2px;
    background: var(--color-primary);
  }

  .site-nav__cta {
    width: auto;
  }
}

/* Footer */
.site-footer {
  padding-block: var(--space-8) var(--space-6);
  font-size: var(--text-sm);
}

.site-footer__grid {
  display: grid;
  gap: var(--space-7);
}

.site-footer__brand {
  display: inline-flex;
  color: var(--color-fg);
}

.site-footer__tagline {
  max-width: 34ch;
  margin-top: var(--space-4);
  color: var(--color-muted);
}

.site-footer__heading {
  margin-bottom: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.site-footer__links {
  display: grid;
  gap: var(--space-3);
}

.site-footer__links a {
  color: var(--color-fg);
}

.site-footer__links a:hover {
  color: var(--color-primary);
}

.site-footer__soon {
  color: var(--color-muted);
}

.site-footer__soon small {
  margin-left: var(--space-2);
  font-size: var(--text-xs);
  opacity: 0.8;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-8);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: var(--text-xs);
}

@media (min-width: 40em) {
  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 60em) {
  .site-footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
}

.site-footer__trademark {
  flex-basis: 100%;
}