:root {
  --ink: #242723;
  --muted: #687066;
  --line: #e5e8e1;
  --paper: #fff;
  --wash: #f8f9f5;
  --accent: #bc4d20;
  --accent-dark: #963810;
  --accent-wash: #fff4eb;
  --body-font:
    "Segoe UI Variable Text", "Microsoft YaHei", "PingFang SC", sans-serif;
  --code-font: "Cascadia Code", Consolas, monospace;
  --md-text-font: var(--body-font);
  --md-code-font: var(--code-font);
}
[data-md-color-scheme="default"] {
  --md-default-bg-color: var(--paper);
  --md-default-fg-color: var(--ink);
  --md-default-fg-color--light: var(--muted);
  --md-primary-fg-color: #fff;
  --md-primary-bg-color: var(--ink);
  --md-primary-bg-color--light: var(--muted);
  --md-accent-fg-color: var(--accent);
  --md-accent-fg-color--transparent: #bc4d201a;
  --md-typeset-a-color: var(--accent);
  --md-code-bg-color: #f5f6f2;
  --md-code-fg-color: #32372f;
  --md-footer-bg-color: var(--wash);
  --md-footer-bg-color--dark: var(--wash);
  --md-footer-fg-color: var(--ink);
  --md-footer-fg-color--light: var(--muted);
  --md-footer-fg-color--lighter: var(--muted);
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 7rem;
  scrollbar-gutter: stable;
}
body {
  -webkit-font-smoothing: antialiased;
}
.md-grid {
  max-width: 62rem;
}
.md-header {
  box-shadow: none;
  border-bottom: 1px solid var(--line);
}
.md-header__inner {
  height: 3.1rem;
}
.md-header__button.md-logo {
  margin-right: 0.15rem;
}
.md-header__button.md-logo img {
  width: 1.55rem;
  height: 1.55rem;
}
.md-header__title {
  font-size: 0.92rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}
.md-search__form {
  background: var(--wash);
  border: 1px solid var(--line);
  border-radius: 0.4rem;
}
.md-search__form:hover {
  background: #f0f2ec;
}
.md-search__input {
  font-size: 0.75rem;
}
.md-tabs {
  background: #fff;
  color: var(--ink);
}
.md-tabs__list {
  gap: 0.4rem;
}
.md-tabs__link {
  font-size: 0.76rem;
  font-weight: 600;
  opacity: 1;
  color: var(--muted);
  margin-top: 0.7rem;
}
.md-tabs__item {
  height: 2.2rem;
}
.md-tabs__item--active .md-tabs__link {
  color: var(--accent);
}
.md-tabs__link:hover {
  color: var(--accent);
}
.md-main__inner {
  margin-top: 1.5rem;
}
.md-typeset {
  font-size: 0.82rem;
  line-height: 1.85;
}
.md-typeset h1 {
  color: var(--ink);
  font-size: 1.85rem;
  line-height: 1.4;
  font-weight: 720;
  letter-spacing: -0.025em;
  margin-bottom: 0.8rem;
}
.md-typeset h2 {
  font-size: 1.2rem;
  line-height: 1.5;
  font-weight: 680;
  letter-spacing: -0.015em;
  margin-top: 2rem;
}
.md-typeset h3 {
  font-size: 0.96rem;
  font-weight: 650;
}
.md-typeset p {
  margin: 0.85em 0;
}
.md-typeset a {
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}
.md-typeset a:hover {
  color: var(--accent-dark);
  text-decoration: underline;
}
.md-typeset :is(a, button, input):focus-visible,
.md-tabs__link:focus-visible {
  outline: 3px solid #c66b3e;
  outline-offset: 4px;
}
.md-typeset hr {
  border-color: var(--line);
}
.md-typeset img {
  border-radius: 0.5rem;
}
.md-typeset blockquote {
  border-color: #d7dcd0;
  color: var(--muted);
}
.md-nav {
  font-size: 0.73rem;
  line-height: 1.6;
}
.md-nav__title {
  color: var(--ink);
}
.md-nav__link {
  color: var(--muted);
  padding: 0.15rem 0.35rem;
  border-radius: 0.25rem;
}
.md-nav__link--active {
  background: var(--accent-wash);
  color: var(--accent) !important;
  font-weight: 600;
}
.md-nav__link:hover {
  color: var(--accent);
}
.md-sidebar--secondary .md-nav__link {
  font-size: 0.69rem;
}
.md-typeset pre {
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  overflow: hidden;
}
.md-typeset code {
  font-size: 0.85em;
  border-radius: 0.2rem;
}
/* Keep callouts and expandable examples in the site's orange palette. */
.md-content .md-typeset .admonition,
.md-content .md-typeset details {
  font-size: 0.77rem;
  border-color: var(--accent);
  border-radius: 0.4rem;
  box-shadow: none;
}
.md-content .md-typeset .admonition > .admonition-title,
.md-content .md-typeset details > summary {
  background-color: var(--accent-wash);
  color: var(--ink);
}
.md-content .md-typeset .admonition > .admonition-title::before,
.md-content .md-typeset details > summary::before,
.md-content .md-typeset details > summary::after {
  background-color: var(--accent);
}
.md-content .md-typeset .admonition:focus-within,
.md-content .md-typeset details:focus-within {
  box-shadow: 0 0 0 0.2rem var(--md-accent-fg-color--transparent);
}
.md-content .md-typeset details > summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.md-typeset table:not([class]) {
  font-size: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 0.4rem;
}
.md-typeset table:not([class]) th {
  background: var(--wash);
  color: var(--ink);
}
.md-typeset table:not([class]) :is(th, td) {
  padding: 0.65rem 0.8rem;
}
.md-typeset .tabbed-labels > label {
  font-size: 0.75rem;
}
.md-footer {
  border-top: 1px solid var(--line);
}
.md-footer__title {
  font-size: 0.82rem;
}
.md-footer-meta {
  background: var(--wash);
}
.md-copyright {
  color: var(--muted);
}

/* Reading pages share the homepage's type scale and header grid.
   Bound the reading column independently of the shared site sizing. */
body:not(:has(.learning-home)) .md-content {
  max-width: 42rem;
  margin-inline: 0 auto;
}
body:not(:has(.learning-home)) .md-content__inner {
  margin-inline: 1.2rem;
}
body:not(:has(.learning-home)) .md-main__inner {
  margin-top: 1rem;
}
body:not(:has(.learning-home)) .md-typeset h1 {
  margin-bottom: 0.7rem;
}
body:not(:has(.learning-home)) .md-typeset h2 {
  margin: 1.5rem 0 0.6rem;
}
body:not(:has(.learning-home)) .md-typeset p {
  margin-block: 0.75em;
}
body:not(:has(.learning-home)) .outcome {
  padding: 0.65rem 0.85rem;
  margin-block: 0.9rem;
}
body:not(:has(.learning-home)) .md-typeset__table {
  display: block;
}
body:not(:has(.learning-home)) .md-typeset table:not([class]) {
  display: table;
  width: 100%;
}
body:not(:has(.learning-home)) .md-typeset table:not([class]) :is(th, td) {
  padding: 0.55rem 0.7rem;
}

/* Landing page. Reading pages keep Material's chapter navigation. */
body:has(.learning-home) .md-content {
  width: 100%;
  margin: 0 auto;
}
body:has(.learning-home) .md-content__inner {
  margin: 0 1.2rem 3rem;
  padding-top: 0;
}
body:has(.learning-home) .md-main__inner {
  margin-top: 0;
}
body:has(.learning-home) .md-content__inner::before {
  display: none;
}
body:has(.learning-home) .md-footer__inner {
  display: none;
}
.learning-home .hero {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  align-items: center;
  gap: 2.4rem;
  padding: 2.2rem 0 1.8rem;
  border-bottom: 1px solid var(--line);
}
.learning-home .hero > div {
  min-width: 0;
}
.learning-home .headerlink {
  display: none;
}
.learning-home .eyebrow,
.section-kicker {
  color: var(--accent);
  font-size: 0.61rem;
  letter-spacing: 0.12em;
  font-weight: 700;
}
.learning-home .hero h1 {
  font-size: clamp(1.8rem, 2.8vw, 2.2rem);
  line-height: 1.35;
  letter-spacing: -0.04em;
  margin: 0.55rem 0 0;
}
.learning-home .hero h1 em {
  font-style: normal;
  color: var(--accent);
}
.learning-home .hero-lead {
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.8;
  margin: 0;
}
.learning-home .hero-actions > p {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  margin: 1rem 0 0;
}
.md-typeset a.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  min-height: 2.4rem;
  padding: 0.55rem 1rem;
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  color: var(--ink);
  background: #fff;
  font-size: 0.76rem;
  font-weight: 600;
  text-decoration: none;
  transition:
    background 0.16s,
    border-color 0.16s;
}
.md-typeset a.button:hover {
  background: var(--wash);
  border-color: #c7cec0;
}
.md-typeset a.button.primary {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
}
.md-typeset a.button.primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
}
.learning-home .hero-note {
  color: var(--muted);
  font-size: 0.65rem;
  margin-top: 0.85rem;
}
.start-strip {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1.05rem;
  align-items: center;
  border: 1px solid #eadccb;
  background: #fcf9f3;
  border-radius: 0.65rem;
  padding: 0.75rem 1.2rem;
  margin: 1.1rem 0 1.4rem;
}
.start-strip .step-number {
  color: var(--accent);
  font-family: Georgia, serif;
  font-size: 1.65rem;
  line-height: 1;
}
.start-strip p {
  margin: 0;
}
.start-strip strong {
  font-size: 0.83rem;
}
.start-strip .strip-detail {
  color: var(--muted);
  font-size: 0.72rem;
}
.start-strip > p:last-child a {
  font-size: 0.72rem;
  white-space: nowrap;
  font-weight: 600;
}
.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin: 1.7rem 0 1rem;
}
.learning-home .section-heading h2 {
  margin: 0 0 0.25rem;
  font-size: 1.22rem;
}
.section-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 0.73rem;
}
.section-heading > p > a {
  font-size: 0.7rem;
  white-space: nowrap;
}
.lesson-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}
.lesson-card {
  border: 1px solid var(--line);
  border-radius: 0.65rem;
  overflow: hidden;
  background: #fff;
  transition:
    border-color 0.16s,
    box-shadow 0.16s;
  position: relative;
}
.lesson-card:hover {
  border-color: #c7cec0;
  box-shadow: 0 5px 15px #28311d07;
}
.lesson-card > p:first-child {
  line-height: 0;
  margin: 0;
  border-bottom: 1px solid var(--line);
  background: #f1f1e9;
}
.lesson-card img {
  display: block;
  width: 100%;
  aspect-ratio: 1.55;
  object-fit: cover;
  border-radius: 0;
}
.lesson-body {
  padding: 0.9rem 1rem 1rem;
}
.lesson-body .lesson-meta {
  font-size: 0.6rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.lesson-body h3 {
  font-size: 0.93rem;
  margin: 0.3rem 0 0.45rem;
}
.lesson-body p {
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.8;
  margin: 0;
}
.lesson-body > p:last-child {
  margin-top: 0.9rem;
}
.lesson-body a {
  font-weight: 600;
  font-size: 0.71rem;
}
.tool-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}
.tool-card {
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
}
.tool-card p {
  margin: 0.3rem 0 0;
  color: var(--muted);
  font-size: 0.69rem;
}
.tool-card h3 {
  margin: 0;
  font-size: 0.84rem;
}
.tool-card h3 a {
  color: var(--ink);
}
.tool-card .tool-mark {
  display: inline-flex;
  font-family: var(--code-font);
  font-size: 0.7rem;
  margin-right: 0.4rem;
  color: var(--accent);
  vertical-align: middle;
}
.tool-more {
  color: var(--muted);
  font-size: 0.68rem;
  margin-top: 0.6rem !important;
}
.resource-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1rem;
}
.resource-panel {
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  padding: 1.2rem;
  background: var(--wash);
}
.resource-panel h3 {
  margin: 0.35rem 0 0.4rem;
  font-size: 1.04rem;
}
.resource-panel > p {
  margin: 0.3rem 0 0.8rem;
  color: var(--muted);
  font-size: 0.72rem;
}
.resource-panel ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
.resource-panel li {
  margin: 0;
  padding: 0.52rem 0;
  border-top: 1px solid var(--line);
  font-size: 0.72rem;
}
.resource-panel li a {
  color: var(--ink);
}
.resource-panel > p:last-child {
  margin: 0.8rem 0 0;
}
.help-strip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.2rem;
  border-top: 1px solid var(--line);
  margin-top: 2rem;
  padding-top: 1.35rem;
}
.help-strip p {
  margin: 0;
  color: var(--muted);
  font-size: 0.7rem;
}
.help-strip strong {
  color: var(--ink);
}
.help-strip a {
  margin-right: 0.65rem;
}

/* Shared cards retain compatibility with existing API pages. */
.card-grid > ul,
.card-row > ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
  list-style: none;
  padding: 0;
  margin-left: 0;
}
.card-row > ul {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.card-grid > ul > li,
.card-row > ul > li {
  margin: 0;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  font-size: 0.75rem;
}
/* Override Material's list defaults for the video directory cards. */
.md-typeset .video-overview > ul {
  display: grid;
  margin-left: 0;
}
.md-typeset .video-overview > ul > li {
  margin: 0;
}
.page-lead {
  color: var(--muted);
  font-size: 0.8rem;
}
.page-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.65rem 0 1.3rem;
}
.page-meta span {
  font-size: 0.64rem;
  padding: 0.18rem 0.55rem;
  background: var(--wash);
  border: 1px solid var(--line);
  border-radius: 0.3rem;
  color: var(--muted);
}
.outcome {
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 0.4rem;
  padding: 0.9rem 1rem;
  background: var(--wash);
  margin: 1.2rem 0;
}
.outcome p {
  margin: 0 !important;
}
.next-step {
  border-top: 1px solid var(--line);
  margin-top: 2rem;
  padding-top: 1rem;
}

/* Catalog: all entries remain visible without JavaScript. */
.catalog-controls {
  display: none;
  margin: 1.2rem 0;
}
.catalog[data-ready] .catalog-controls {
  display: block;
}
.catalog-search-label {
  font-size: 0.7rem;
  color: var(--muted);
  display: block;
  margin-bottom: 0.3rem;
}
.catalog-search {
  width: 100%;
  min-height: 2.4rem;
  border: 1px solid #cbd2c5;
  border-radius: 0.4rem;
  padding: 0.6rem 0.8rem;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: 0.76rem;
}
.catalog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.8rem;
}
.catalog-filter {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 1rem;
  padding: 0.3rem 0.75rem;
  font: inherit;
  font-size: 0.68rem;
  color: var(--muted);
  cursor: pointer;
}
.catalog-filter[aria-pressed="true"] {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.catalog-count {
  color: var(--muted);
  font-size: 0.66rem;
  margin-top: 0.6rem;
}
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}
.catalog-card {
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  padding: 1rem;
}
.catalog-card[hidden] {
  display: none;
}
.catalog-card .tag {
  font-size: 0.6rem;
  color: var(--accent);
  font-weight: 600;
}
.catalog-card h2 {
  margin: 0.35rem 0 !important;
  font-size: 0.95rem !important;
}
.catalog-card h2 a {
  color: var(--ink);
}
.catalog-card p {
  font-size: 0.72rem;
  color: var(--muted);
  margin: 0.3rem 0 0.75rem;
}
.catalog-card > p:last-child {
  margin-bottom: 0;
  font-size: 0.67rem;
}
.catalog-empty {
  padding: 1.3rem;
  border: 1px dashed #cbd2c5;
  border-radius: 0.5rem;
  font-size: 0.76rem;
  color: var(--muted);
}
.catalog-empty[hidden] {
  display: none;
}
@media (min-width: 76.25em) {
  .md-sidebar--primary {
    width: 10rem;
  }
  /* Index links already carry padding; their wrappers must not add it again. */
  .md-nav--primary .md-nav__container {
    padding: 0;
  }
}
@media (min-width: 60em) {
  .md-sidebar--secondary {
    width: 10rem;
  }
}
@media (max-width: 76.234em) {
  .md-nav--primary .md-nav__title[for="__drawer"] {
    background: var(--wash);
    color: var(--ink);
  }
}
@media (max-width: 60em) {
  .learning-home .hero {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 1.6rem 0 1.3rem;
  }
  .learning-home .hero h1 {
    font-size: 1.9rem;
  }
  .lesson-grid {
    gap: 0.6rem;
  }
  .lesson-body {
    padding: 0.8rem;
  }
}
@media (max-width: 44em) {
  body:not(:has(.learning-home)) .md-content__inner {
    margin-inline: 0.8rem;
  }
  /* Keep table columns readable; Material's scroll wrapper handles narrow screens. */
  body:not(:has(.learning-home)) .md-typeset table:not([class]) {
    min-width: 28rem;
  }
  .lesson-grid,
  .tool-grid,
  .resource-pair,
  .catalog-grid,
  .card-grid > ul,
  .card-row > ul {
    grid-template-columns: 1fr;
  }
  .start-strip {
    grid-template-columns: auto 1fr;
    gap: 0.7rem;
    padding: 0.85rem;
  }
  .start-strip > p:last-child {
    grid-column: 2;
  }
  .lesson-card img {
    aspect-ratio: 1.8;
  }
  .section-heading {
    align-items: start;
  }
  .section-heading > p {
    padding-top: 0.2rem;
  }
  .section-heading p {
    font-size: 0.69rem;
  }
  .help-strip {
    flex-direction: column;
    align-items: start;
    gap: 0.7rem;
  }
  body:has(.learning-home) .md-content__inner {
    margin-left: 0.85rem;
    margin-right: 0.85rem;
  }
  .md-typeset h1 {
    font-size: 1.6rem;
  }
  .learning-home .hero h1 {
    font-size: clamp(1.3rem, 7.7vw, 1.7rem);
  }
  .learning-home .hero h1 em {
    white-space: nowrap;
  }
  .learning-home .hero-actions a.button {
    padding: 0.55rem 0.75rem;
    font-size: 0.72rem;
  }
  .learning-home .hero-actions a.button:not(.primary) {
    padding-inline: 0;
    border-color: transparent;
    background: transparent;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}