:root {
  color-scheme: light only;
  --color-canvas: #e4efee;
  --color-surface: #ffffff;
  --color-page: #ffffff;
  --color-ink: #102626;
  --color-ink-muted: #536b65;
  --color-border: #6f8b82;
  --color-divider: #b8ccc6;
  --color-brand-primary: #009ea1;
  --color-brand-primary-hover: #007477;
  --color-brand-mint: #8eccb0;
  --color-brand-soft: #dcefe7;
  --color-link: #005456;
  --color-link-hover: #00474a;
  --color-soft: #dcefe7;
  --color-focus: #007477;
  --color-mark: #c7e5d8;
  --color-heading-section: var(--color-brand-primary-hover);
  --color-heading-subsection: var(--color-link);
  --color-heading-detail: var(--color-ink);
  --spacing-2: 2px;
  --spacing-4: 4px;
  --spacing-6: 6px;
  --spacing-12: 12px;
  --spacing-24: 24px;
  --spacing-36: 36px;
  --spacing-48: 48px;
  --spacing-72: 72px;
  --spacing-96: 96px;
  --content-width: 76rem;
  --reading-width: 45rem;
  --font-interface: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", sans-serif;
  --font-reading: "Klee One", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", sans-serif;
  font-family: var(--font-interface);
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--spacing-24);
}

body {
  margin: 0;
  background-color: var(--color-page);
  background-image: radial-gradient(ellipse 72rem 54rem at left top, rgb(142 204 176 / 0.24), rgb(142 204 176 / 0.10) 34%, transparent 68%);
  background-attachment: fixed;
  color: var(--color-ink);
  font-size: 16px;
  line-height: 1.75;
}

a {
  color: var(--color-link);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--color-link-hover);
  text-decoration-thickness: 2px;
}

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
}

#guideline:focus {
  outline: none;
}

.skip-link {
  position: fixed;
  z-index: 100;
  inset: var(--spacing-12) auto auto var(--spacing-12);
  padding: var(--spacing-12) var(--spacing-24);
  transform: translateY(-160%);
  background: var(--color-surface);
  border: 2px solid var(--color-ink);
  color: var(--color-ink);
}

.skip-link:focus {
  transform: translateY(0);
}

.page-shell {
  width: min(calc(100% - var(--spacing-48)), var(--content-width));
  margin-inline: auto;
  display: grid;
  grid-template-columns: 16rem minmax(0, var(--reading-width));
  grid-template-areas:
    "sidebar header"
    "sidebar content";
  justify-content: start;
  gap: 0 var(--spacing-36);
  padding-block: var(--spacing-36) var(--spacing-96);
}

.document-header {
  grid-area: header;
  display: flex;
  align-items: center;
  min-height: 44px;
  margin-bottom: var(--spacing-48);
  justify-content: space-between;
}

.document-brand {
  display: grid;
  grid-template-columns: 36px auto;
  align-items: center;
  gap: var(--spacing-12);
  min-width: 0;
  color: var(--color-ink);
  text-decoration: none;
}

.document-brand img {
  display: block;
  width: 36px;
  height: 36px;
  object-fit: contain;
  transform: scale(2.2);
}

.document-brand p {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-6);
  margin: 0;
  line-height: 1;
  transform: translateY(1px);
  white-space: nowrap;
}

.document-brand strong {
  color: var(--color-ink);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.015em;
}

.document-brand span {
  color: var(--color-ink-muted);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.mobile-menu-button {
  display: none;
}

.header-nav {
  display: flex;
  gap: var(--spacing-24);
  font-size: 0.875rem;
}

.header-nav a {
  color: var(--color-ink-muted);
  text-decoration: none;
}

.header-nav a:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

.header-nav a[aria-current="page"] {
  color: var(--color-ink);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-thickness: 2px;
}

.document-sidebar {
  grid-area: sidebar;
  min-width: 0;
}

.sidebar-page-links {
  display: none;
}

.search-panel {
  margin-bottom: var(--spacing-24);
  padding-bottom: var(--spacing-24);
  border-bottom: 1px solid var(--color-divider);
}

.search-control {
  position: relative;
}

.search-control__icon {
  position: absolute;
  z-index: 1;
  top: 50%;
  left: var(--spacing-12);
  width: 16px;
  height: 16px;
  transform: translateY(-50%);
  fill: none;
  stroke: var(--color-brand-primary);
  stroke-width: 1.75;
  stroke-linecap: round;
  pointer-events: none;
}

input[type="search"] {
  width: 100%;
  height: 36px;
  min-height: 36px;
  padding: calc(var(--spacing-6) - 1px) calc(var(--spacing-12) - 1px) calc(var(--spacing-6) - 1px) calc(var(--spacing-36) - 1px);
  border: 1px solid var(--color-brand-primary);
  border-radius: 999px;
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  color: var(--color-ink);
  font: inherit;
  line-height: 1.4;
}

input[type="search"]:focus-visible {
  outline: none;
  border-width: 2px;
  border-color: var(--color-brand-primary-hover);
}

input[type="search"]::placeholder {
  color: var(--color-ink-muted);
  opacity: 1;
}

input[type="search"]:disabled {
  background: transparent;
  color: var(--color-ink-muted);
}

#search-clear {
  min-height: 36px;
  margin-top: var(--spacing-6);
  padding-inline: 0;
  border: 0;
  background: transparent;
  color: var(--color-link);
  font: inherit;
  text-decoration: underline;
  text-underline-offset: 0.18em;
  cursor: pointer;
}

#search-clear:hover {
  color: var(--color-link-hover);
}

.search-status {
  min-height: 1.6em;
  margin-top: var(--spacing-6);
  color: var(--color-ink-muted);
  font-size: 0.875rem;
}

.search-status:empty {
  display: none;
}

.search-results {
  margin-top: var(--spacing-12);
  border-top: 1px solid var(--color-divider);
}

.search-results ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

.search-results li + li {
  border-top: 1px solid var(--color-divider);
}

.search-results a {
  display: grid;
  gap: var(--spacing-4);
  padding-block: var(--spacing-6);
  color: var(--color-ink);
  text-decoration: none;
}

.search-results a:hover .search-result__title {
  color: var(--color-link-hover);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.18em;
}

.search-result__title {
  color: var(--color-link);
  font-weight: 650;
}

.search-result__excerpt,
.no-results {
  color: var(--color-ink-muted);
  font-size: 0.9375rem;
}

.document-sidebar .search-result__excerpt {
  display: none;
}

.no-results {
  margin: var(--spacing-24) 0 0;
}

mark {
  background: var(--color-mark);
  color: inherit;
  padding-inline: var(--spacing-2);
}

.toc-sticky {
  position: sticky;
  top: var(--spacing-24);
  max-height: calc(100vh - var(--spacing-48));
  overflow-y: auto;
  overscroll-behavior: contain;
  margin: calc(-1 * var(--spacing-6)) calc(-1 * var(--spacing-12)) 0 calc(-1 * var(--spacing-6));
  padding: var(--spacing-6) var(--spacing-12) var(--spacing-24) var(--spacing-6);
}

.toc-title {
  margin: 0 0 var(--spacing-12);
  color: var(--color-ink);
  font-size: 0.875rem;
  font-weight: 650;
}

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

.toc-list .toc-chapter ol {
  list-style: none;
  margin: var(--spacing-4) 0 var(--spacing-12);
  padding-left: var(--spacing-12);
  border-left: 1px solid var(--color-divider);
}

.toc-list > li + li {
  margin-top: var(--spacing-12);
}

.toc-list ol li + li {
  margin-top: var(--spacing-4);
}

.toc-list a {
  display: block;
  padding-block: var(--spacing-4);
  color: var(--color-ink-muted);
  font-size: 0.875rem;
  line-height: 1.5;
  text-decoration: none;
}

.toc-list .toc-chapter__link {
  color: var(--color-link);
  font-weight: 650;
}

.toc-list a:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.page-shell > main {
  grid-area: content;
  min-width: 0;
}

.guideline-document {
  min-width: 0;
}

.guideline-document h1,
.guideline-document h2,
.guideline-document h3,
.guideline-document h4,
.guideline-document h5,
.guideline-document h6 {
  scroll-margin-top: var(--spacing-24);
  text-wrap: balance;
}

.guideline-document h1 {
  margin: 0 0 var(--spacing-36);
  color: var(--color-ink);
  font-size: clamp(2rem, 4vw, 2.25rem);
  font-weight: 650;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.guideline-document h2 {
  margin: var(--spacing-72) 0 var(--spacing-24);
  padding-top: var(--spacing-48);
  position: relative;
  background:
    linear-gradient(var(--color-page), var(--color-page)) center top / var(--spacing-36) var(--spacing-24) no-repeat,
    linear-gradient(var(--color-brand-mint), var(--color-brand-mint)) center 9px / 100% 1px no-repeat,
    linear-gradient(var(--color-divider), var(--color-divider)) center 15px / 100% 1px no-repeat;
  color: var(--color-heading-section);
  font-size: 1.5rem;
  font-weight: 650;
  line-height: 1.35;
}

.guideline-document h2::before {
  content: "";
  position: absolute;
  top: 8px;
  left: 50%;
  width: 8px;
  height: 8px;
  background: var(--color-brand-primary);
  transform: translateX(-50%) rotate(45deg);
}

.guideline-document h3 {
  margin: var(--spacing-48) 0 var(--spacing-12);
  color: var(--color-heading-subsection);
  font-size: 1.25rem;
  font-weight: 650;
  line-height: 1.4;
}

.guideline-document h4 {
  margin: var(--spacing-36) 0 var(--spacing-12);
  color: var(--color-heading-detail);
  font-size: 1.125rem;
  font-weight: 650;
  line-height: 1.45;
}

.guideline-document h1 + p {
  margin-bottom: var(--spacing-48);
  color: var(--color-ink-muted);
  font-size: 0.9375rem;
}

.guideline-document p,
.guideline-document ul,
.guideline-document ol,
.guideline-document blockquote,
.guideline-document pre,
.guideline-document .table-scroll {
  margin-block: 0 var(--spacing-24);
}

.guideline-document > p,
.guideline-document > ul,
.guideline-document > ol,
.guideline-document > blockquote {
  font-family: var(--font-reading);
}

.guideline-document > :is(p, ul, ol, blockquote) strong {
  font-weight: 600;
}

.guideline-document li + li {
  margin-top: var(--spacing-6);
}

.guideline-document .task-list {
  padding-left: 0;
  list-style: none;
}

.guideline-document .task-list-item {
  position: relative;
  padding-left: var(--spacing-36);
}

.task-list-item__checkbox {
  position: absolute;
  top: 0.42em;
  left: var(--spacing-4);
  width: 18px;
  height: 18px;
  margin: 0;
  accent-color: var(--color-brand-primary-hover);
  opacity: 1;
}

.guideline-document code {
  padding: var(--spacing-2) var(--spacing-4);
  border-radius: 4px;
  background: var(--color-soft);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.9em;
  overflow-wrap: anywhere;
}

.color-swatch {
  display: inline-block;
  width: 1em;
  height: 1em;
  margin-left: 0.35em;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  vertical-align: -0.12em;
}

.source-file-link code {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

.guideline-document pre {
  overflow-x: auto;
  padding: var(--spacing-24);
  border: 1px solid var(--color-divider);
  border-radius: 10px;
  background: var(--color-surface);
}

.guideline-document pre code {
  padding: 0;
  background: transparent;
  overflow-wrap: normal;
}

.guideline-document blockquote {
  margin-inline: 0;
  padding: var(--spacing-12) var(--spacing-24);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface);
}

.guideline-document blockquote > :last-child {
  margin-bottom: 0;
}

.table-scroll {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-divider);
  border-radius: 10px;
  background: var(--color-surface);
}

.guideline-document table {
  width: 100%;
  min-width: 34rem;
  border-collapse: collapse;
  line-height: 1.55;
}

.guideline-document th,
.guideline-document td {
  padding: var(--spacing-12);
  border-bottom: 1px solid var(--color-divider);
  text-align: left;
  vertical-align: top;
}

.guideline-document th {
  background: var(--color-soft);
  font-weight: 650;
}

.guideline-document tr:last-child td {
  border-bottom: 0;
}

.document-footer {
  margin-top: var(--spacing-96);
  padding-top: var(--spacing-36);
  border-top: 3px double var(--color-divider);
  color: var(--color-ink-muted);
  font-size: 0.9375rem;
}

.document-footer p {
  margin: 0 0 var(--spacing-12);
}

.footer-links,
.document-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-6) var(--spacing-24);
}

.footer-links {
  margin-bottom: var(--spacing-24);
}

.document-meta {
  padding-top: var(--spacing-24);
  border-top: 1px solid var(--color-divider);
  font-size: 0.8125rem;
  font-variant-numeric: tabular-nums;
}

.error-page {
  width: min(calc(100% - var(--spacing-48)), 42rem);
  margin-inline: auto;
  padding-block: var(--spacing-96);
}

.error-code {
  margin: 0;
  color: var(--color-ink-muted);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

.error-page h1 {
  margin: var(--spacing-12) 0 var(--spacing-24);
  font-size: clamp(2rem, 6vw, 3rem);
  line-height: 1.25;
}

.primary-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: var(--spacing-12);
  font-weight: 650;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 62rem) {
  .page-shell {
    grid-template-areas:
      "header"
      "sidebar"
      "content";
    grid-template-columns: minmax(0, var(--reading-width));
    gap: 0;
  }

  .document-header {
    margin-bottom: var(--spacing-24);
  }

  .document-sidebar {
    display: none;
    margin-bottom: var(--spacing-36);
  }

  .document-sidebar.is-open {
    display: block;
  }

  .toc-sticky {
    position: static;
    max-height: none;
    overflow: visible;
    margin: 0;
    padding-right: 0;
  }

  .mobile-menu-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-6);
    min-width: 44px;
    min-height: 44px;
    padding: var(--spacing-6) var(--spacing-12);
    border: 1px solid var(--color-divider);
    border-radius: 10px;
    background: transparent;
    color: var(--color-link);
    font: inherit;
    font-size: 0.875rem;
    font-weight: 650;
    cursor: pointer;
  }

  .mobile-menu-button:hover {
    border-color: var(--color-border);
    color: var(--color-link-hover);
  }

  .mobile-menu-button__icon {
    display: grid;
    gap: 4px;
    width: 18px;
  }

  .mobile-menu-button__icon span {
    display: block;
    width: 18px;
    height: 2px;
    border-radius: 1px;
    background: currentColor;
    transform-origin: center;
    transition: transform 160ms ease, opacity 120ms ease;
  }

  .mobile-menu-button[aria-expanded="true"] .mobile-menu-button__icon span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .mobile-menu-button[aria-expanded="true"] .mobile-menu-button__icon span:nth-child(2) {
    opacity: 0;
  }

  .mobile-menu-button[aria-expanded="true"] .mobile-menu-button__icon span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .document-sidebar.is-open .toc-sticky {
    padding: var(--spacing-24);
    border-block: 1px solid var(--color-divider);
    background: var(--color-surface);
  }

  .sidebar-page-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-6) var(--spacing-24);
    margin-bottom: var(--spacing-24);
    font-weight: 650;
  }

  .document-sidebar .search-panel {
    margin-bottom: var(--spacing-24);
  }
}

@media (max-width: 40rem) {
  .page-shell {
    width: min(calc(100% - var(--spacing-24)), var(--content-width));
  }

  .document-brand {
    grid-template-columns: 32px auto;
    gap: var(--spacing-6);
  }

  .document-brand img {
    width: 32px;
    height: 32px;
  }

  .mobile-menu-button__label {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .header-nav {
    display: none;
  }

  .search-control {
    display: flex;
  }

  #search-clear {
    justify-self: start;
  }

  .page-shell {
    padding-block: var(--spacing-36) var(--spacing-72);
  }

  .guideline-document h1 {
    font-size: 2rem;
  }

  .guideline-document h2 {
    margin-top: var(--spacing-48);
  }

  .guideline-document h3 {
    margin-top: var(--spacing-36);
  }

  .guideline-document ul,
  .guideline-document ol {
    padding-left: var(--spacing-24);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .mobile-menu-button__icon span {
    transition: none;
  }
}

@media (forced-colors: active) {
  :root {
    --color-canvas: Canvas;
    --color-surface: Canvas;
    --color-page: Canvas;
    --color-ink: CanvasText;
    --color-ink-muted: CanvasText;
    --color-border: ButtonBorder;
    --color-divider: ButtonBorder;
    --color-link: LinkText;
    --color-link-hover: LinkText;
    --color-soft: Canvas;
    --color-focus: Highlight;
    --color-mark: Mark;
    --color-heading-section: CanvasText;
    --color-heading-subsection: CanvasText;
    --color-heading-detail: CanvasText;
  }

  .guideline-document h2 {
    padding-top: var(--spacing-24);
    border-top: 1px solid CanvasText;
    background: none;
  }

  .guideline-document h2::before {
    display: none;
  }

  input[type="search"] {
    border: 1px solid ButtonBorder;
  }

  input[type="search"]:focus-visible {
    outline: 2px solid Highlight;
    outline-offset: 0;
  }
}

@media print {
  :root {
    --color-canvas: #ffffff;
    --color-surface: #ffffff;
    --color-page: #ffffff;
    --color-ink: #000000;
    --color-ink-muted: #333333;
    --color-divider: #777777;
    --color-heading-section: #000000;
    --color-heading-subsection: #000000;
    --color-heading-detail: #000000;
  }

  @page {
    margin: 18mm;
  }

  body {
    font-size: 10.5pt;
    line-height: 1.6;
    background: #ffffff;
  }

  .document-header,
  .document-sidebar,
  .document-footer,
  .skip-link {
    display: none !important;
  }

  .page-shell {
    display: block;
    width: auto;
    padding: 0;
  }

  .guideline-document h1,
  .guideline-document h2,
  .guideline-document h3,
  .guideline-document h4 {
    break-after: avoid;
  }

  .guideline-document h2 {
    margin-top: var(--spacing-48);
    padding-top: var(--spacing-24);
    border-top: 1px solid #777777;
    background: none;
    color: #000000;
  }

  .guideline-document h2::before {
    display: none;
  }

  .guideline-document p,
  .guideline-document li,
  .guideline-document table,
  .guideline-document pre,
  .guideline-document blockquote {
    orphans: 3;
    widows: 3;
  }

  .table-scroll {
    overflow: visible;
    border-color: #777777;
  }

  .guideline-document table {
    min-width: 0;
    font-size: 8.5pt;
  }

  a[href^="http"]::after {
    content: " (" attr(href) ")";
    overflow-wrap: anywhere;
    font-size: 0.85em;
  }
}

.color-swatch--102626 { background: #102626; }
.color-swatch--536b65 { background: #536B65; }
.color-swatch--009ea1 { background: #009EA1; }
.color-swatch--007477 { background: #007477; }
.color-swatch--005456 { background: #005456; }
.color-swatch--8eccb0 { background: #8ECCB0; }
.color-swatch--dcefe7 { background: #DCEFE7; }
.color-swatch--e4efee { background: #E4EFEE; }
.color-swatch--ffffff { background: #FFFFFF; }
.color-swatch--f6f7f8 { background: #F6F7F8; }
.color-swatch--6f8b82 { background: #6F8B82; }
.color-swatch--b8ccc6 { background: #B8CCC6; }
.color-swatch--b42318 { background: #B42318; }
.color-swatch--b54708 { background: #B54708; }
.color-swatch--c7e5d8 { background: #C7E5D8; }
.color-swatch--00474a { background: #00474A; }
.color-swatch--912018 { background: #912018; }