.snap-main {
  min-height: 100svh;
}

.snap-section {
  --section-overlay: var(--overlay-warm);
  position: relative;
  isolation: isolate;
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: var(--section-pad-block) var(--section-pad-inline);
  scroll-snap-align: start;
  scroll-snap-stop: always;
  overflow: hidden;
}

.snap-section[data-tone="grey"] {
  --section-overlay: var(--overlay-grey);
}

.snap-section::before,
.snap-section::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.snap-section::before {
  z-index: var(--layer-background);
  background-color: var(--color-canvas);
  background-image: var(--section-image, linear-gradient(135deg, rgba(180, 122, 91, 0.22), rgba(109, 114, 92, 0.18)));
  background-size: cover;
  background-position: center;
  filter: grayscale(22%) contrast(0.9) saturate(0.82);
  transform: scale(1.02);
}

.snap-section::after {
  z-index: var(--layer-overlay);
  background: var(--section-overlay);
  backdrop-filter: blur(1px);
}

[data-theme="contrast"] .snap-section::before {
  opacity: 0.12;
  filter: grayscale(1) contrast(1.4);
}

.section-shell {
  position: relative;
  z-index: var(--layer-content);
  width: min(100%, var(--content-narrow));
  max-height: calc(100svh - (var(--section-pad-block) * 1.35));
  overflow: auto;
  scrollbar-width: thin;
}

.section-shell--center {
  display: grid;
  justify-items: center;
  text-align: center;
}

.section-shell--wide {
  width: min(100%, var(--content-wide));
}

.section-shell--narrow {
  width: min(100%, var(--content-narrow));
}

.section-heading {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-7);
}

.section-heading h2 {
  font-size: var(--text-3xl);
}

.section-heading--split {
  gap: var(--space-6);
}

.section-watermark {
  position: absolute;
  z-index: 0;
  right: var(--space-4);
  bottom: var(--space-2);
  max-width: calc(100% - 2rem);
  color: var(--color-watermark);
  font-family: var(--font-display);
  font-size: var(--text-watermark);
  line-height: 0.85;
  text-align: right;
  white-space: nowrap;
  pointer-events: none;
}

.site-header {
  position: fixed;
  z-index: var(--layer-menu);
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-size);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  pointer-events: none;
}

.site-mark,
.menu-toggle,
.site-menu {
  pointer-events: auto;
}

.site-mark {
  display: inline-grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--color-line);
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-ink);
  text-decoration: none;
  box-shadow: var(--shadow-line);
  backdrop-filter: blur(18px);
}

.site-mark span {
  font-family: var(--font-display);
  font-size: var(--text-md);
  line-height: 1;
}

.menu-toggle {
  position: relative;
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--color-line);
  border-radius: 50%;
  background: var(--color-surface);
  box-shadow: var(--shadow-line);
  backdrop-filter: blur(18px);
  cursor: pointer;
}

.menu-toggle span {
  position: absolute;
  width: 1rem;
  height: 1px;
  background: currentColor;
  transition: transform var(--duration-base) var(--ease-standard);
}

.menu-toggle span:first-child {
  transform: translateY(-0.18rem);
}

.menu-toggle span:last-child {
  transform: translateY(0.18rem);
}

body.menu-open .menu-toggle span:first-child {
  transform: rotate(42deg);
}

body.menu-open .menu-toggle span:last-child {
  transform: rotate(-42deg);
}

.site-menu {
  position: fixed;
  inset: 0;
  z-index: var(--layer-nav);
  display: grid;
  align-content: center;
  gap: var(--space-8);
  padding: calc(var(--nav-size) + var(--space-5)) var(--space-5) var(--space-5);
  background: var(--overlay-solid);
  color: var(--color-ink);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-0.75rem);
  transition:
    opacity var(--duration-base) var(--ease-standard),
    transform var(--duration-base) var(--ease-standard),
    visibility var(--duration-base) var(--ease-standard);
}

body.menu-open .site-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.site-menu__list {
  display: grid;
  gap: var(--space-3);
  padding: 0;
  margin: 0;
  list-style: none;
  counter-reset: nav;
}

.site-menu__list a {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  align-items: center;
  min-height: 3rem;
  color: var(--color-muted);
  text-decoration: none;
}

.site-menu__list a::before {
  counter-increment: nav;
  content: "0" counter(nav);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
}

.site-menu__list a:hover,
.site-menu__list a.is-active {
  color: var(--color-ink);
}

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

.theme-switcher,
.language-switch {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.theme-switcher button,
.language-switch a {
  display: inline-grid;
  place-items: center;
  width: 2.7rem;
  height: 2.7rem;
  padding: 0;
  border: 1px solid var(--color-line);
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-decoration: none;
  transition:
    background var(--duration-base) var(--ease-standard),
    border-color var(--duration-base) var(--ease-standard),
    color var(--duration-base) var(--ease-standard),
    transform var(--duration-base) var(--ease-standard);
}

.theme-switcher button {
  cursor: pointer;
}

.theme-switcher button:hover,
.language-switch a:hover {
  transform: translateY(-1px);
}

.theme-icon {
  display: none;
  width: 1.15rem;
  height: 1.15rem;
}

.theme-switcher button[data-current-theme="light"] .theme-icon--light,
.theme-switcher button[data-current-theme="dark"] .theme-icon--dark,
.theme-switcher button[data-current-theme="contrast"] .theme-icon--contrast {
  display: block;
}

.language-switch {
  padding: 0;
  margin: 0;
  list-style: none;
}

@media (min-width: 48rem) {
  .section-heading--split {
    grid-template-columns: minmax(15rem, 0.8fr) minmax(0, 1fr);
    align-items: end;
  }
}

@media (min-width: 60rem) {
  .snap-section {
    padding-left: calc(var(--nav-desktop) + var(--section-pad-inline));
  }

  .site-header {
    right: auto;
    bottom: 0;
    width: var(--nav-desktop);
    height: auto;
    flex-direction: column;
    align-items: center;
    padding: var(--space-5) var(--space-3);
    border-right: 1px solid var(--color-line);
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(18px);
  }

  .menu-toggle {
    display: none;
  }

  .site-menu {
    position: static;
    inset: auto;
    z-index: auto;
    display: grid;
    flex: 1;
    width: 100%;
    align-content: space-between;
    padding: var(--space-6) 0 0;
    background: transparent;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .site-menu__list {
    gap: var(--space-2);
  }

  .site-menu__list a {
    grid-template-columns: 1fr;
    justify-items: center;
    min-height: auto;
    padding: var(--space-2) 0;
    font-size: var(--text-sm);
    writing-mode: vertical-rl;
  }

  .site-menu__list a::before {
    display: none;
  }

  .site-menu__meta {
    display: grid;
    justify-content: center;
    gap: var(--space-3);
  }

  .theme-switcher,
  .language-switch {
    flex-direction: column;
  }
}