.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 5vw, var(--space-8));
}

.container--narrow {
  max-width: var(--container-narrow);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background-color: var(--color-overlay);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-subtle);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: var(--space-4);
}

.site-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.03em;
  flex-shrink: 0;
}

.site-logo span {
  color: var(--color-accent);
}

.site-nav {
  display: none;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.site-nav__link {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  position: relative;
  transition: color var(--duration-fast), background-color var(--duration-fast);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: var(--space-3);
  right: var(--space-3);
  bottom: 0;
  height: 2px;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-normal) var(--ease-out);
}

.site-nav__link:hover::after,
.site-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

.site-nav__link:hover,
.site-nav__link[aria-current="page"] {
  color: var(--color-text);
}

.site-nav__link[aria-current="page"] {
  background-color: var(--color-surface);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  transition: background-color var(--duration-fast);
}

.menu-toggle:hover {
  background-color: var(--color-surface);
}

.menu-toggle__bar {
  display: block;
  width: 1.125rem;
  height: 2px;
  background-color: currentColor;
  position: relative;
  transition: background-color var(--duration-fast);
}

.menu-toggle__bar::before,
.menu-toggle__bar::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: currentColor;
  transition: transform var(--duration-normal) var(--ease-out);
}

.menu-toggle__bar::before {
  top: -6px;
}

.menu-toggle__bar::after {
  top: 6px;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bar {
  background-color: transparent;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bar::before {
  transform: translateY(6px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bar::after {
  transform: translateY(-6px) rotate(-45deg);
}

.mobile-nav {
  position: fixed;
  inset: var(--header-height) 0 0 0;
  z-index: 99;
  background-color: var(--color-bg);
  padding: var(--space-6);
  transform: translateX(100%);
  transition: transform var(--duration-normal) var(--ease-out);
  overflow-y: auto;
}

.mobile-nav.is-open {
  transform: translateX(0);
}

.mobile-nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.mobile-nav__link {
  display: block;
  padding: var(--space-4);
  font-size: 1.25rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: background-color var(--duration-fast);
}

.mobile-nav__link:hover,
.mobile-nav__link[aria-current="page"] {
  background-color: var(--color-surface);
}

.mobile-nav__link[aria-current="page"] {
  color: var(--color-accent);
}

.site-footer {
  border-top: 1px solid var(--color-border-subtle);
  padding-block: var(--space-10);
  margin-top: var(--space-16);
}

.site-footer__inner {
  display: grid;
  gap: var(--space-8);
}

.site-footer__top {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4) var(--space-6);
}

.site-footer__link {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  transition: color var(--duration-fast);
}

.site-footer__link:hover {
  color: var(--color-text);
}

.site-footer__bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-subtle);
}

.site-footer__copy {
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
}

.section {
  padding-block: var(--space-12);
}

.section--hero {
  padding-block: clamp(var(--space-10), 12vw, var(--space-16));
}

.section--compact {
  padding-block: var(--space-8);
}

.section-header {
  margin-bottom: var(--space-8);
}

.section-header--row {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.section-label::before {
  content: "";
  display: block;
  width: 1.5rem;
  height: 2px;
  background-color: var(--color-accent);
  flex-shrink: 0;
}

.grid {
  display: grid;
  gap: var(--space-6);
}

.grid--2 {
  grid-template-columns: 1fr;
}

.grid--3 {
  grid-template-columns: 1fr;
}

.split {
  display: grid;
  gap: var(--space-8);
  align-items: start;
}

.page-header {
  padding-block: var(--space-10) var(--space-8);
  border-bottom: 1px solid var(--color-border-subtle);
  margin-bottom: var(--space-8);
}

.page-header__title {
  margin-bottom: var(--space-4);
}

.page-header__desc {
  font-size: 1.0625rem;
  max-width: 55ch;
}

@media (min-width: 768px) {
  .site-nav {
    display: block;
  }

  .menu-toggle {
    display: none;
  }

  .site-footer__top {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }

  .site-footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .section-header--row {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }

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

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

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

@media (min-width: 1024px) {
  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1280px) {
  .container {
    padding-inline: var(--space-8);
  }

  .section--hero {
    padding-block: var(--space-16);
  }
}