:root {
  --cc-paper: #f7f9f7;
  --cc-surface: #ffffff;
  --cc-surface-subtle: #f0f4f1;
  --cc-ink: #202722;
  --cc-ink-soft: #536159;
  --cc-line: #d5ddd7;
  --cc-line-strong: #aebbb2;
  --cc-green: #176b50;
  --cc-green-strong: #0f563f;
  --cc-green-soft: #e7f2ec;
  --cc-coral: #c95e4d;
  --cc-coral-soft: #fbece8;
  --cc-code: #f0f3f1;
  --cc-shadow: 0 10px 28px rgb(31 47 38 / 8%);
  --cc-radius: 4px;
  --md-primary-fg-color: #176b50;
  --md-primary-fg-color--light: #2f8064;
  --md-primary-fg-color--dark: #0f563f;
  --md-accent-fg-color: #c95e4d;
  --md-default-bg-color: var(--cc-paper);
  --md-default-fg-color: var(--cc-ink);
  --md-typeset-a-color: var(--cc-green);
  --md-code-bg-color: var(--cc-code);
  --md-code-fg-color: #26332c;
}

[data-md-color-scheme="slate"] {
  --cc-paper: #111713;
  --cc-surface: #18201b;
  --cc-surface-subtle: #1e2822;
  --cc-ink: #e7ede9;
  --cc-ink-soft: #aab7af;
  --cc-line: #344139;
  --cc-line-strong: #53645a;
  --cc-green: #6fc29f;
  --cc-green-strong: #93d7b8;
  --cc-green-soft: #19382c;
  --cc-coral: #ef8b77;
  --cc-coral-soft: #41241f;
  --cc-code: #0d120f;
  --cc-shadow: 0 14px 34px rgb(0 0 0 / 28%);
  --md-primary-fg-color: #18201b;
  --md-primary-fg-color--light: #243128;
  --md-primary-fg-color--dark: #0d120f;
  --md-accent-fg-color: #ef8b77;
  --md-default-bg-color: var(--cc-paper);
  --md-default-fg-color: var(--cc-ink);
  --md-typeset-a-color: var(--cc-green);
  --md-code-bg-color: var(--cc-code);
  --md-code-fg-color: #dce6df;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scrollbar-gutter: stable;
}

body {
  overflow-x: hidden;
  background: var(--cc-paper);
  color: var(--cc-ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-feature-settings: "kern" 1, "liga" 1;
  letter-spacing: 0;
}

.md-grid {
  width: min(100%, 94rem);
  max-width: 94rem;
}

.md-header {
  background: color-mix(in srgb, var(--cc-surface) 94%, transparent);
  border-bottom: 1px solid var(--cc-line);
  color: var(--cc-ink);
  box-shadow: none;
  backdrop-filter: blur(14px);
}

.md-header__button.md-logo,
.md-header__topic,
.md-header__button {
  color: var(--cc-ink);
}

.md-tabs {
  background: var(--cc-surface);
  border-bottom: 1px solid var(--cc-line);
  color: var(--cc-ink-soft);
}

.md-tabs__link--active,
.md-tabs__link:hover {
  color: var(--cc-green);
}

.md-main,
.md-main__inner,
.md-content,
.md-content__inner,
.md-typeset,
.md-sidebar,
.md-sidebar__scrollwrap {
  min-width: 0;
}

.md-main__inner {
  margin-top: 1.5rem;
}

.md-content__inner {
  max-width: 52rem;
  margin-inline: auto;
  padding-bottom: 5rem;
}

.md-content__inner::before {
  display: none;
}

.md-typeset {
  color: var(--cc-ink);
  font-size: 17px;
  line-height: 1.8;
  overflow-wrap: anywhere;
}

.md-typeset h1,
.md-typeset h2,
.md-typeset h3,
.md-typeset h4 {
  color: var(--cc-ink);
  font-weight: 680;
  letter-spacing: 0;
  line-height: 1.35;
  text-wrap: balance;
}

.md-typeset h1 {
  margin: 0 0 1.15rem;
  font-size: 2.15rem;
}

.md-typeset h2 {
  margin: 3.2rem 0 1rem;
  padding-top: 0.55rem;
  border-top: 1px solid var(--cc-line);
  font-size: 1.52rem;
}

.md-typeset h3 {
  margin: 2.2rem 0 0.7rem;
  font-size: 1.18rem;
}

.md-typeset h4 {
  margin: 1.8rem 0 0.5rem;
  font-size: 1rem;
}

.md-typeset p,
.md-typeset ul,
.md-typeset ol {
  margin-block: 0.8rem 1rem;
}

.md-typeset li + li {
  margin-top: 0.32rem;
}

.md-typeset a {
  color: var(--cc-green);
  text-decoration-color: color-mix(in srgb, var(--cc-green) 42%, transparent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

.md-typeset a:hover,
.md-typeset a:focus-visible {
  color: var(--cc-coral);
  text-decoration-color: currentColor;
}

.md-typeset strong {
  color: color-mix(in srgb, var(--cc-ink) 92%, var(--cc-green));
}

.md-typeset hr {
  margin: 2.8rem 0;
  border-bottom-color: var(--cc-line);
}

.md-typeset blockquote {
  margin: 1.5rem 0;
  padding: 0.3rem 0 0.3rem 1.15rem;
  border-left: 3px solid var(--cc-coral);
  color: var(--cc-ink-soft);
}

.md-typeset blockquote p {
  margin: 0.45rem 0;
}

.md-typeset details {
  margin: 1.25rem 0;
  overflow: clip;
  border: 1px solid var(--cc-line);
  border-radius: var(--cc-radius);
  background: var(--cc-surface);
  box-shadow: none;
}

.md-typeset details summary {
  padding: 0.85rem 1rem;
  color: var(--cc-ink);
  font-weight: 650;
  cursor: pointer;
}

.md-typeset details[open] summary {
  border-bottom: 1px solid var(--cc-line);
  background: var(--cc-surface-subtle);
}

.md-typeset details > :not(summary) {
  margin-inline: 1rem;
}

.md-typeset .admonition,
.md-typeset details[class] {
  border-width: 1px;
  border-radius: var(--cc-radius);
  box-shadow: none;
}

.md-typeset code,
.md-typeset kbd,
.md-typeset pre {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  letter-spacing: 0;
}

.md-typeset code {
  border-radius: 3px;
}

.md-typeset :not(pre) > code {
  padding: 0.12em 0.34em;
  border: 1px solid color-mix(in srgb, var(--cc-line) 75%, transparent);
  background: var(--cc-code);
  color: color-mix(in srgb, var(--cc-ink) 90%, var(--cc-coral));
  word-break: break-word;
}

.md-typeset pre,
.md-typeset .highlight,
.md-typeset .highlighttable {
  max-width: 100%;
}

.md-typeset pre {
  overflow-x: auto;
  border: 1px solid var(--cc-line);
  border-radius: var(--cc-radius);
  background: var(--cc-code);
  scrollbar-width: thin;
}

.md-typeset pre > code {
  min-width: max-content;
}

.md-typeset .md-typeset__table,
.md-typeset .table-scroll {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  scrollbar-width: thin;
}

.md-typeset table:not([class]) {
  display: table;
  width: max-content;
  min-width: 100%;
  border: 1px solid var(--cc-line);
  border-collapse: separate;
  border-spacing: 0;
  border-radius: var(--cc-radius);
  background: var(--cc-surface);
}

.md-typeset table:not([class]) th {
  background: var(--cc-surface-subtle);
  color: var(--cc-ink);
  font-weight: 650;
  white-space: nowrap;
}

.md-typeset table:not([class]) th,
.md-typeset table:not([class]) td {
  padding: 0.7rem 0.85rem;
  border-color: var(--cc-line);
  vertical-align: top;
}

.md-visual-scroll {
  width: 100%;
  max-width: 100%;
  margin: 1.5rem 0;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  scrollbar-width: thin;
}

.md-visual-scroll > img[src$=".svg"],
.md-visual-scroll > img[src*=".svg?"],
.md-visual-scroll > svg {
  display: block;
  width: 100%;
  min-width: 0;
  max-width: 100%;
  height: auto;
  margin: 0;
}

.md-visual-scroll.is-wide > img[src$=".svg"],
.md-visual-scroll.is-wide > img[src*=".svg?"],
.md-visual-scroll.is-wide > svg {
  width: auto;
  min-width: 100%;
  max-width: none;
}

.mermaid-source {
  display: block;
  max-width: 100%;
  margin: 1.5rem 0;
  padding: 1rem;
  overflow-x: auto;
  border-block: 1px solid var(--cc-line);
  background: var(--cc-surface);
  color: var(--cc-ink-soft);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.76rem;
  line-height: 1.55;
  white-space: pre;
  scrollbar-width: thin;
}

.mermaid-source[data-processed="true"] {
  font-family: inherit;
  white-space: normal;
}

.mermaid-source > svg {
  display: block;
  width: 100%;
  height: auto;
  margin-inline: auto;
}

.mermaid-source.is-wide > svg {
  width: auto;
  min-width: 58rem;
  max-width: none;
}

.md-typeset figure {
  max-width: 100%;
  margin: 1.8rem auto;
}

.md-typeset figcaption {
  max-width: 44rem;
  margin-top: 0.65rem;
  color: var(--cc-ink-soft);
  font-size: 0.82rem;
  line-height: 1.55;
}

.md-content img[data-lightbox] {
  cursor: zoom-in;
}

.md-content img[data-lightbox]:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--cc-coral) 68%, transparent);
  outline-offset: 4px;
}

.md-button {
  border-radius: var(--cc-radius);
  letter-spacing: 0;
}

.md-button--primary {
  background: var(--cc-green);
  border-color: var(--cc-green);
  color: #ffffff;
}

.md-button--primary:hover {
  background: var(--cc-green-strong);
  border-color: var(--cc-green-strong);
}

.md-nav {
  color: var(--cc-ink-soft);
  font-size: 0.72rem;
  line-height: 1.45;
}

.md-nav__title,
.md-nav__item--active > .md-nav__link,
.md-nav__link--active {
  color: var(--cc-ink);
  font-weight: 650;
}

.md-nav__link:hover {
  color: var(--cc-green);
}

.md-sidebar--secondary .md-nav__link--active {
  color: var(--cc-green);
}

.md-search__form {
  border: 1px solid var(--cc-line);
  border-radius: var(--cc-radius);
  background: var(--cc-surface-subtle);
}

.md-search__input {
  color: var(--cc-ink);
}

.md-footer {
  background: color-mix(in srgb, var(--cc-ink) 96%, #000000);
}

/* Homepage: an editorial lead followed by a clear route through the archive. */
.home-lead {
  margin: 0.5rem 0 2.4rem;
  padding: 0.2rem 0 0.2rem 1.25rem;
  border-left: 4px solid var(--cc-green);
}

.home-lead h1 {
  margin-bottom: 0.55rem;
}

.home-lead p {
  max-width: 46rem;
  margin: 0;
  color: var(--cc-ink-soft);
  font-size: 1.02rem;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.85rem;
  margin: 0.8rem 0 1.5rem;
  color: var(--cc-ink-soft);
  font-size: 0.76rem;
}

.article-meta > span + span::before {
  margin-right: 0.85rem;
  color: var(--cc-line-strong);
  content: "/";
}

.version-badge {
  display: inline-flex;
  align-items: center;
  min-height: 1.65rem;
  padding: 0.08rem 0.55rem;
  border: 1px solid color-mix(in srgb, var(--cc-coral) 55%, var(--cc-line));
  border-radius: 3px;
  background: var(--cc-coral-soft);
  color: var(--cc-coral);
  font-size: 0.74rem;
  font-weight: 700;
  line-height: 1.25;
}

.reading-path {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0;
  margin: 1.4rem 0 2.6rem;
  padding: 0;
  border-block: 1px solid var(--cc-line);
  list-style: none;
  counter-reset: reading-step;
}

.reading-path > * {
  min-width: 0;
  padding: 1rem 0.85rem 1.1rem;
  counter-increment: reading-step;
}

.reading-path > * + * {
  border-left: 1px solid var(--cc-line);
}

.reading-path > *::before {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--cc-coral);
  font: 700 0.72rem/1.2 "SFMono-Regular", Consolas, monospace;
  content: "0" counter(reading-step);
}

.reading-path a {
  display: block;
  color: var(--cc-ink);
  font-weight: 650;
  line-height: 1.45;
  text-decoration: none;
}

.reading-path a:hover {
  color: var(--cc-green);
}

.home-system-map {
  width: 100%;
  margin: 2rem 0 2.8rem;
  padding-block: 1.25rem;
  border-block: 1px solid var(--cc-line);
}

.home-system-map .md-visual-scroll {
  margin: 0;
}

.route-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 2.2rem;
  margin: 1.3rem 0 2.4rem;
  padding: 0;
  list-style: none;
  counter-reset: route;
}

.route-list > li {
  position: relative;
  min-width: 0;
  margin: 0;
  padding: 0.9rem 0 1rem 2.4rem;
  border-bottom: 1px solid var(--cc-line);
  counter-increment: route;
}

.route-list > li::before {
  position: absolute;
  top: 1rem;
  left: 0;
  color: var(--cc-coral);
  font: 700 0.78rem/1.4 "SFMono-Regular", Consolas, monospace;
  content: counter(route, decimal-leading-zero);
}

.route-list a {
  color: var(--cc-ink);
  font-weight: 650;
  text-decoration: none;
}

.route-list p {
  margin: 0.28rem 0 0;
  color: var(--cc-ink-soft);
  font-size: 0.84rem;
  line-height: 1.6;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 1.4rem 0 2.4rem;
  overflow: hidden;
  border: 1px solid var(--cc-line);
  border-radius: var(--cc-radius);
  background: var(--cc-line);
}

.topic-grid > * {
  min-width: 0;
  margin: 0;
  padding: 1.15rem 1.2rem;
  background: var(--cc-surface);
}

.topic-grid h3,
.topic-grid h4 {
  margin: 0 0 0.45rem;
  padding: 0;
  border: 0;
  font-size: 1rem;
}

.topic-grid p,
.topic-grid ul {
  margin: 0.4rem 0 0;
  color: var(--cc-ink-soft);
  font-size: 0.84rem;
  line-height: 1.62;
}

.topic-grid a {
  font-weight: 630;
}

.evidence-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin: 1.5rem 0 2.6rem;
  padding: 0;
  border-block: 1px solid var(--cc-line);
}

.evidence-strip > * {
  min-width: 0;
  padding: 1rem;
}

.evidence-strip > * + * {
  border-left: 1px solid var(--cc-line);
}

.evidence-strip strong {
  display: block;
  color: var(--cc-coral);
  font-size: 1.35rem;
  line-height: 1.25;
}

.evidence-strip span,
.evidence-strip p {
  display: block;
  margin: 0.28rem 0 0;
  color: var(--cc-ink-soft);
  font-size: 0.78rem;
  line-height: 1.5;
}

.hub-section {
  margin: 3.2rem 0 0;
  padding: 0.7rem 0 0;
  border-top: 2px solid var(--cc-ink);
}

.hub-section > h2:first-child {
  margin-top: 0;
  border-top: 0;
}

#reading-progress {
  position: fixed;
  z-index: 1000;
  top: 0;
  right: 0;
  left: 0;
  width: 100%;
  height: 3px;
  overflow: hidden;
  pointer-events: none;
}

#reading-progress::after {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--cc-coral);
  content: "";
  transform: scaleX(var(--reading-progress, 0));
  transform-origin: left center;
  transition: transform 80ms linear;
}

.image-lightbox {
  width: 100vw;
  max-width: none;
  height: 100vh;
  max-height: none;
  margin: 0;
  padding: 2.8rem;
  border: 0;
  background: transparent;
  color: #ffffff;
}

.image-lightbox::backdrop {
  background: rgb(7 10 8 / 92%);
  backdrop-filter: blur(6px);
}

.image-lightbox__frame {
  display: grid;
  width: 100%;
  height: 100%;
  place-items: center;
}

.image-lightbox__image {
  display: block;
  max-width: min(100%, 96rem);
  max-height: calc(100vh - 8rem);
  border-radius: 2px;
  background: #ffffff;
  box-shadow: 0 24px 80px rgb(0 0 0 / 55%);
  object-fit: contain;
}

.image-lightbox__caption {
  position: fixed;
  right: 4rem;
  bottom: 1rem;
  left: 4rem;
  overflow: hidden;
  color: #e4ebe6;
  font-size: 0.78rem;
  line-height: 1.5;
  text-align: center;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.image-lightbox__close {
  position: fixed;
  z-index: 1;
  top: 0.85rem;
  right: 1rem;
  display: grid;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: 1px solid rgb(255 255 255 / 35%);
  border-radius: 50%;
  background: rgb(0 0 0 / 35%);
  color: #ffffff;
  font: 300 1.7rem/1 sans-serif;
  cursor: pointer;
  place-items: center;
}

.image-lightbox__close:hover,
.image-lightbox__close:focus-visible {
  border-color: var(--cc-coral);
  background: var(--cc-coral);
  outline: 0;
}

body.is-lightbox-open {
  overflow: hidden;
}

@media screen and (min-width: 76.25em) {
  .md-main__inner {
    display: grid;
    grid-template-columns: 15rem minmax(0, 1fr) 15rem;
    gap: 2rem;
    align-items: start;
  }

  .md-sidebar {
    width: auto;
  }

  .md-sidebar--primary {
    grid-column: 1;
  }

  .md-content {
    grid-column: 2;
  }

  .md-sidebar--secondary {
    grid-column: 3;
  }
}

@media screen and (max-width: 76.234375em) {
  .md-content__inner {
    max-width: 48rem;
    padding-inline: 1rem;
  }

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

  .reading-path > * + * {
    border-left: 0;
  }

  .reading-path > *:not(:nth-child(3n + 1)) {
    border-left: 1px solid var(--cc-line);
  }

  .reading-path > *:nth-child(n + 4) {
    border-top: 1px solid var(--cc-line);
  }
}

@media screen and (max-width: 44.984375em) {
  html {
    scrollbar-gutter: auto;
  }

  .md-main__inner {
    margin-top: 0.85rem;
  }

  .md-content__inner {
    width: 100%;
    padding-right: 0.9rem;
    padding-left: 0.9rem;
  }

  .md-typeset {
    font-size: 16px;
    line-height: 1.76;
  }

  .md-typeset h1 {
    font-size: 1.75rem;
  }

  .md-typeset h2 {
    margin-top: 2.6rem;
    font-size: 1.34rem;
  }

  .md-typeset h3 {
    font-size: 1.08rem;
  }

  .reading-path,
  .route-list,
  .topic-grid,
  .evidence-strip {
    grid-template-columns: minmax(0, 1fr);
  }

  .reading-path > * + *,
  .reading-path > *:not(:nth-child(3n + 1)),
  .evidence-strip > * + * {
    border-left: 0;
  }

  .reading-path > *:nth-child(n + 2),
  .evidence-strip > * + * {
    border-top: 1px solid var(--cc-line);
  }

  .topic-grid {
    gap: 1px;
  }

  .article-meta > span {
    width: 100%;
  }

  .article-meta > span + span::before {
    display: none;
  }

  .md-typeset table:not([class]) th,
  .md-typeset table:not([class]) td {
    padding: 0.58rem 0.68rem;
  }

  .image-lightbox {
    padding: 2.8rem 0.7rem 3.5rem;
    overflow: hidden;
  }

  .image-lightbox__frame {
    display: block;
    overflow: auto;
  }

  .image-lightbox__image {
    width: auto;
    max-width: none;
    max-height: none;
    margin-inline: auto;
  }

  .image-lightbox__caption {
    right: 1rem;
    left: 1rem;
    white-space: normal;
  }

  .mermaid-source {
    margin-inline: -0.2rem;
    padding: 0.75rem;
  }
}

cc-agent-lab:not(:defined) {
  display: block;
  margin: 1.5rem 0;
}

cc-agent-lab:not(:defined) .cc-agent-lab-fallback {
  display: block;
  padding: 1rem 1.1rem;
  border: 1px solid var(--cc-line-strong);
  border-left: 4px solid var(--cc-green);
  border-radius: 4px;
  background: var(--cc-surface-subtle);
  color: var(--cc-ink);
}

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

  #reading-progress::after {
    transition: none;
  }
}

@media print {
  #reading-progress,
  .image-lightbox,
  .md-header,
  .md-tabs,
  .md-sidebar,
  .md-footer {
    display: none !important;
  }

  body,
  .md-main,
  .md-content,
  .md-content__inner {
    width: 100%;
    max-width: none;
    margin: 0;
    padding: 0;
    background: #ffffff;
    color: #000000;
  }

  .md-typeset a {
    color: #000000;
  }
}