.skip-link {
  position: fixed;
  inset: var(--space-3) auto auto var(--space-3);
  z-index: 10;
  padding: var(--space-2) var(--space-3);
  background: var(--text);
  color: var(--canvas);
  transform: translateY(-180%);
}
.skip-link:focus {
  transform: none;
}
.shell {
  width: min(calc(100% - 2rem), var(--measure));
  margin-inline: auto;
}
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  padding-block: var(--space-5);
}
.brand {
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.03em;
}
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-5);
}
.nav a {
  color: var(--text-muted);
  text-decoration: none;
}
.nav a[aria-current="page"] {
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
}
.page {
  padding-block: var(--space-7) var(--space-8);
}
.page-header {
  margin-block-end: var(--space-7);
}
.page-header p:last-child {
  margin-block-end: 0;
}
.split > .button {
  flex-shrink: 0;
}
.table-wrap {
  overflow-x: auto;
}
.project-table {
  min-width: 36rem;
}
.eyebrow {
  margin-block-end: var(--space-3);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.lede {
  max-width: var(--measure-text);
  color: var(--text-muted);
  font-size: 1.125rem;
}
.section {
  margin-block: var(--space-7);
}
.stack {
  display: grid;
  gap: var(--space-4);
}
.stack[data-gap="large"] {
  gap: var(--space-6);
}
.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}
.split {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: var(--space-5);
}
.region {
  padding: var(--space-5);
  background: transparent;
}
.region[data-emphasis="subtle"] {
  background: var(--region);
}
.divider {
  margin-block: var(--space-6);
  border: 0;
  border-block-start: 1px solid var(--line);
}
.button {
  display: inline-flex;
  min-height: 2.65rem;
  align-items: center;
  justify-content: center;
  border: 0;
  background: transparent;
  padding: 0.55rem 0.9rem;
  color: var(--accent);
  cursor: pointer;
  font-weight: 600;
  text-decoration: none;
}
.button:hover {
  color: var(--accent-hover);
}
.button[data-variant="primary"] {
  background: var(--text);
  color: var(--canvas);
}
.button[data-variant="primary"]:hover {
  background: #29343a;
  color: var(--canvas);
}
.button[data-variant="danger"] {
  color: var(--danger);
}
.list-links {
  margin: 0;
  padding: 0;
  list-style: none;
}
.list-links li + li {
  margin-block-start: var(--space-1);
}
.list-link {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-4);
  padding: var(--space-4);
  color: var(--text);
  text-decoration: none;
}
.list-link:hover {
  background: var(--region);
  color: var(--text);
}
.list-link strong {
  color: var(--text);
  display: block;
  margin-block-end: var(--space-1);
  font-weight: 600;
}
.list-link span {
  color: var(--text-muted);
  font-size: 0.875rem;
}
.list-link b {
  align-self: center;
  color: var(--accent);
  font-weight: 400;
}
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-block-end: var(--space-5);
}
.filters a {
  color: var(--text-muted);
  text-decoration: none;
}
.filters a[aria-current="true"] {
  color: var(--text);
  border-block-end: 2px solid var(--accent);
}
.status {
  white-space: nowrap;
}
.status[data-marker="dot"]::before {
  content: "";
  display: inline-block;
  width: 0.45rem;
  height: 0.45rem;
  margin-inline-end: var(--space-2);
  border-radius: 50%;
  background: var(--text-muted);
  vertical-align: 0.08em;
}
.status[data-marker="dot"][data-state="active"]::before {
  background: var(--accent);
}
.facts {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: var(--space-3) var(--space-5);
  margin: 0;
}
.facts dt {
  color: var(--text-muted);
}
.facts dd {
  margin: 0;
}
.help {
  display: block;
  margin-block-start: var(--space-2);
  color: var(--text-muted);
  font-size: 0.8125rem;
  font-weight: 400;
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-block-start: var(--space-6);
}
.disclosure {
  margin-block-start: var(--space-6);
}
.disclosure[open] summary {
  margin-block-end: var(--space-5);
}
.hero {
  padding-block: clamp(4rem, 12vw, 9rem);
}
.hero .lede {
  max-width: 38rem;
  font-size: clamp(1.125rem, 2.5vw, 1.45rem);
}
/* The illustration is decorative; keep a clear lane for the reading content. */
.hero--illustrated {
  background-image: url("../assets/shibui-hero.svg");
  background-repeat: no-repeat;
  background-position: right center;
  background-size: 40% auto;
}
.hero--illustrated > * {
  max-width: 55%;
}
.hero--illustrated .lede {
  max-width: 52%;
}
@media (max-width: 48rem) {
  .hero--illustrated {
    background-image: none;
  }
  .hero--illustrated > *,
  .hero--illustrated .lede {
    max-width: 100%;
  }
}
.principle-grid {
  --column-gap: var(--gap-peer);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--column-gap);
}
.principle {
  padding-block-start: var(--space-4);
}
.principle[data-separator="top"] {
  border-block-start: 2px solid var(--text);
}
.principle p {
  color: var(--text-muted);
}
.footer {
  padding-block: var(--space-6);
  color: var(--text-muted);
  font-size: 0.8125rem;
}
@media (max-width: 44rem) {
  .site-header,
  .split {
    align-items: flex-start;
    flex-direction: column;
  }
  .principle-grid {
    grid-template-columns: 1fr;
  }
  .facts {
    grid-template-columns: 1fr;
    gap: var(--space-1);
  }
  .facts dd + dt {
    margin-block-start: var(--space-3);
  }
}

/* Reading and manipulation share tokens; density follows the task. */
.reading {
  max-width: var(--measure-text);
}
.workspace .page-header {
  margin-block-end: var(--space-6);
}
.workspace h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}
.workspace-grid {
  --column-gap: var(--space-7);
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(14rem, 1fr);
  gap: var(--column-gap);
  align-items: start;
}
.workspace-grid > section {
  min-width: 0;
}
.allocation-table {
  min-width: 25rem;
}
.allocation-table th[scope="row"] {
  color: var(--text);
  font-size: 1rem;
  text-transform: none;
  letter-spacing: normal;
}
.allocation-table input {
  min-width: 5rem;
}
.allocation-table td:last-child {
  width: 7rem;
}
.capacity-result {
  margin-block-start: var(--space-5);
}
.capacity-result p {
  margin-block-end: var(--space-2);
}
[data-state="over"],
.input-error {
  color: var(--danger);
}
input[aria-invalid="true"] {
  border-color: var(--danger);
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
@media (max-width: 44rem) {
  .workspace-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

/* Column layouts: app navigation + task; settings add a local navigation column. */
.app-shell {
  --column-gap: var(--gap-region);
  width: min(calc(100% - 3rem), 82rem);
  min-height: 100svh;
  margin-inline: auto;
  padding-block: var(--space-7) var(--space-6);
  display: grid;
  grid-template-columns: 12rem minmax(0, 1fr);
  gap: var(--column-gap);
  align-items: start;
}
.app-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}
.app-sidebar .brand {
  display: inline-block;
  margin-block-end: var(--space-2);
}
.app-sidebar p {
  margin: 0;
}
.app-nav,
.section-nav {
  display: grid;
  gap: var(--space-1);
}
.app-nav a,
.section-nav a {
  display: block;
  padding: var(--space-3);
  color: var(--text-muted);
  text-decoration: none;
}
.app-nav a:hover,
.section-nav a:hover {
  color: var(--text);
  background: var(--region);
}
.app-nav a[aria-current="page"] {
  background: var(--selected);
  color: var(--text);
  font-weight: 600;
}
.app-identity {
  margin-block-start: var(--space-7);
  display: grid;
  gap: var(--space-1);
  font-size: 0.875rem;
  overflow-wrap: anywhere;
}
.app-identity a {
  margin-block-start: var(--space-4);
}
.app-main {
  min-width: 0;
}
.project-table th,
.project-table td {
  padding-block: var(--space-4);
}
.project-table th[scope="row"] {
  color: var(--text);
  font-size: 0.875rem;
  text-transform: none;
  letter-spacing: normal;
}
.project-table th[scope="row"] a {
  color: inherit;
}
.settings-columns {
  --column-gap: var(--gap-region);
  display: grid;
  grid-template-columns: 10rem minmax(0, 1fr);
  gap: var(--column-gap);
  align-items: start;
}
.settings-content {
  min-width: 0;
}
.settings-content section {
  scroll-margin-block-start: var(--space-6);
}
.settings-content section + section {
  margin-block-start: var(--space-7);
}
.setting-row {
  display: grid;
  grid-template-columns: 10rem minmax(0, 1fr);
  gap: var(--space-4);
  align-items: center;
}
.setting-row + .setting-row {
  margin-block-start: var(--space-4);
}
.setting-row label,
.setting-toggle {
  font-weight: 400;
}
.setting-toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  min-height: 2.75rem;
  cursor: pointer;
}
.setting-toggle input {
  width: 1.125rem;
  height: 1.125rem;
  margin: 0;
  accent-color: var(--accent);
}
/* Reflow local navigation first, then move workspace navigation above the task. */
@media (max-width: 68rem) {
  .settings-columns {
    --column-gap: var(--gap-peer);
    grid-template-columns: minmax(0, 1fr);
  }
  .section-nav {
    display: flex;
    flex-wrap: wrap;
  }
}
@media (max-width: 48rem) {
  .app-shell {
    width: min(calc(100% - 2rem), 82rem);
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    padding-block: var(--space-5) var(--space-6);
  }
  .app-sidebar {
    position: static;
    min-height: 0;
    padding-block: 0 var(--space-5);
    gap: var(--space-4);
  }
  .app-nav {
    display: flex;
    flex-wrap: wrap;
  }
  .app-identity {
    display: none;
  }
  .app-main {
    padding-block-start: var(--space-5);
  }
}
@media (max-width: 36rem) {
  .setting-row {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-2);
  }
}

/* Opt-in separators belong to the content column, not the whole page.
   align-items: start keeps its height independent of the navigation column. */
[data-column-divider] > :nth-child(2) {
  position: relative;
  --column-divider-inset: 8px;
}
[data-column-divider] > :nth-child(2)::before {
  content: "";
  position: absolute;
  inset-inline-start: calc(var(--column-gap) / -2);
  inset-block: var(--column-divider-inset);
  border-inline-start: 1px solid var(--line);
  pointer-events: none;
}
@media (max-width: 68rem) {
  .settings-columns[data-column-divider] > :nth-child(2)::before {
    content: none;
  }
}
@media (max-width: 48rem) {
  .app-shell[data-column-divider] > :nth-child(2)::before {
    content: none;
  }
}

/* Small peer groups keep their existing gap; separators add no layout width. */
.principle-grid[data-separators="columns"] > .principle {
  position: relative;
}
.principle-grid[data-separators="columns"]
  > .principle:not(:nth-child(3n + 1))::before {
  content: "";
  position: absolute;
  inset-inline-start: calc(var(--column-gap) / -2);
  inset-block: 8px;
  border-inline-start: 1px solid var(--line);
  pointer-events: none;
}
@media (max-width: 44rem) {
  .principle-grid[data-separators="columns"]
    > .principle:not(:nth-child(3n + 1))::before {
    content: none;
  }
}

@media (max-width: 44rem) {
  .workspace-grid[data-column-divider] > :nth-child(2)::before {
    content: none;
  }
}