:root {
  --dsa-ink: #172033;
  --dsa-blue: #2667d8;
  --dsa-blue-soft: #eaf2ff;
  --dsa-orange: #b76524;
  --dsa-paper: #f5f8fc;
  --dsa-panel: #ffffff;
  --dsa-line: #dce4ef;
  --dsa-header-height: 3.2rem;
  --dsa-rail-width: 14rem;
}

[data-md-color-scheme="slate"] {
  --dsa-ink: #edf2ff;
  --dsa-blue: #87a0ff;
  --dsa-blue-soft: #17294a;
  --dsa-orange: #ffb47d;
  --dsa-paper: #111827;
  --dsa-panel: #182235;
  --dsa-line: #2b3a51;
}

.md-header {
  min-height: var(--dsa-header-height);
  color: var(--dsa-ink);
  border-bottom: 1px solid var(--dsa-line);
  background: color-mix(in srgb, var(--dsa-panel) 94%, transparent);
  box-shadow: 0 1px 10px rgba(23, 32, 51, .06);
  backdrop-filter: blur(14px);
}

.md-header__inner {
  max-width: none;
  min-height: var(--dsa-header-height);
  padding-inline: 1rem;
}

.md-header__title {
  font-weight: 800;
  letter-spacing: -.02em;
}

.md-main {
  background:
    radial-gradient(circle at 78% 8%, color-mix(in srgb, var(--dsa-blue) 7%, transparent), transparent 24rem),
    var(--dsa-paper);
}

.md-main__inner {
  max-width: none;
  margin-top: 0;
}

.md-typeset h1 {
  max-width: 20ch;
  margin-bottom: 1.5rem;
  color: var(--dsa-ink);
  font-size: clamp(2.25rem, 4.4vw, 3.8rem);
  line-height: 1.03;
  font-weight: 800;
  letter-spacing: -.035em;
}

.md-typeset h2 {
  margin-top: 2.6rem;
  color: var(--dsa-ink);
  font-weight: 750;
  letter-spacing: -.02em;
}

.md-typeset h3 {
  color: var(--dsa-ink);
}

.md-content__inner {
  padding-top: 2.7rem;
  padding-bottom: 5rem;
}

.md-typeset {
  font-size: .84rem;
  line-height: 1.75;
}

.md-typeset p,
.md-typeset li {
  text-wrap: pretty;
}

.md-typeset code {
  border-radius: .28rem;
}

.md-typeset pre > code {
  line-height: 1.65;
}

.md-typeset .mermaid {
  margin: 1.5rem 0 2rem;
  padding: 1.1rem;
  overflow-x: auto;
  border: 1px solid var(--dsa-line);
  border-radius: .75rem;
  background: color-mix(in srgb, var(--dsa-panel) 88%, transparent);
  text-align: center;
}

.md-typeset .mermaid svg {
  width: auto;
  max-width: 100%;
  height: auto;
}

@media screen and (max-width: 44.9844em) {
  .md-typeset .mermaid svg {
    min-width: 38rem;
    max-width: none;
  }
}

.md-sidebar--primary .md-sidebar__scrollwrap {
  scrollbar-color: color-mix(in srgb, var(--dsa-blue) 28%, transparent) transparent;
  scrollbar-width: thin;
}

.md-sidebar--primary .md-nav__title {
  color: var(--dsa-ink);
  font-weight: 800;
}

.md-sidebar--primary .md-nav__item--section > .md-nav__link {
  margin-top: 1.2rem;
  color: var(--md-default-fg-color--light);
  font-size: .62rem;
  font-weight: 850;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.md-sidebar--primary .md-nav__link {
  margin: .12rem 0;
  padding: .42rem .55rem;
  border-radius: .45rem;
  line-height: 1.35;
}

.md-sidebar--primary .md-nav__link:hover,
.md-sidebar--primary .md-nav__link:focus-visible {
  color: var(--dsa-blue);
  background: color-mix(in srgb, var(--dsa-blue-soft) 72%, transparent);
}

.md-sidebar--primary .md-nav__link--active,
.md-sidebar--primary .md-nav__link[aria-current="page"] {
  color: var(--dsa-blue);
  font-weight: 750;
  background: var(--dsa-blue-soft);
  box-shadow: inset 3px 0 0 var(--dsa-blue);
}

.reader-rail {
  display: grid;
  gap: .65rem;
  margin-bottom: .9rem;
  padding: .25rem .35rem 1rem;
  border-bottom: 1px solid var(--dsa-line);
}

.reader-rail__eyebrow {
  margin: 0;
  color: var(--dsa-orange);
  font-size: .58rem;
  font-weight: 850;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.reader-rail__title {
  margin: 0;
  color: var(--dsa-ink);
  font-size: .78rem;
  font-weight: 800;
}

.reader-companion-link {
  min-height: 44px;
  padding: .55rem .6rem;
  display: grid;
  gap: .12rem;
  color: var(--dsa-ink);
  border: 1px solid color-mix(in srgb, var(--dsa-blue) 38%, var(--dsa-line));
  border-radius: .5rem;
  background: color-mix(in srgb, var(--dsa-blue-soft) 58%, var(--dsa-panel));
  text-decoration: none;
}

.reader-companion-link > span {
  color: color-mix(in srgb, var(--dsa-orange) 68%, var(--dsa-ink));
  font-size: .65rem;
  font-weight: 850;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.reader-companion-link > strong {
  font-size: .7rem;
  line-height: 1.35;
}

.reader-companion-link > small {
  color: var(--md-default-fg-color--light);
  font-size: .65rem;
  line-height: 1.35;
}

.reader-companion-link:hover,
.reader-companion-link:focus-visible {
  color: var(--dsa-blue);
  border-color: var(--dsa-blue);
}

.reader-companion-link:focus-visible {
  outline: 2px solid var(--dsa-blue);
  outline-offset: 2px;
}

.reader-bookmark {
  display: grid;
  gap: .45rem;
}

.reader-bookmark__save,
.reader-bookmark__resume {
  width: 100%;
  padding: .5rem .6rem;
  color: var(--dsa-ink);
  border: 1px solid var(--dsa-line);
  border-radius: .5rem;
  background: var(--dsa-panel);
  font: inherit;
  font-size: .63rem;
  font-weight: 750;
  text-align: left;
  cursor: pointer;
}

.reader-bookmark__save:hover,
.reader-bookmark__save:focus-visible,
.reader-bookmark__resume:hover,
.reader-bookmark__resume:focus-visible {
  color: var(--dsa-blue);
  border-color: color-mix(in srgb, var(--dsa-blue) 55%, var(--dsa-line));
}

.reader-bookmark__resume {
  display: grid;
  gap: .16rem;
}

.reader-bookmark__resume small {
  color: var(--md-default-fg-color--light);
  font-weight: 500;
}

.reader-progress {
  position: fixed;
  z-index: 10;
  top: var(--dsa-header-height);
  right: 0;
  left: 0;
  height: 3px;
  pointer-events: none;
}

.reader-progress__bar {
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--dsa-blue), var(--dsa-orange));
  box-shadow: 0 0 8px color-mix(in srgb, var(--dsa-blue) 45%, transparent);
  transform-origin: left center;
}

.reader-toc {
  margin: 0 0 2.25rem;
  border: 1px solid var(--dsa-line);
  border-radius: .7rem;
  background: color-mix(in srgb, var(--dsa-panel) 90%, transparent);
  box-shadow: 0 8px 28px rgba(23, 32, 51, .04);
}

.reader-toc summary {
  padding: .8rem 1rem;
  color: var(--dsa-blue);
  font-size: .72rem;
  font-weight: 800;
  cursor: pointer;
}

.reader-toc__links {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem .9rem;
  padding: 0 1rem 1rem;
}

.reader-toc__links a {
  color: var(--md-default-fg-color--light);
  font-size: .68rem;
  text-decoration: none;
}

.reader-toc__links a:hover,
.reader-toc__links a:focus-visible {
  color: var(--dsa-blue);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  gap: 2rem;
  align-items: center;
  margin: 2rem 0 4rem;
}

.hero-grid pre {
  max-width: 100%;
  margin: 0;
  box-shadow: 0 24px 60px rgba(23, 32, 51, .15);
  transform: rotate(1deg);
}

.hero-copy {
  font-size: 1.05rem;
}

.chapter-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .9rem;
  margin: 1.2rem 0 3rem;
}

.chapter-card {
  display: grid;
  gap: .45rem;
  min-height: 9rem;
  padding: 1.15rem;
  color: var(--dsa-ink) !important;
  text-decoration: none;
  border: 1px solid color-mix(in srgb, var(--dsa-blue) 20%, transparent);
  border-radius: .8rem;
  background: color-mix(in srgb, var(--dsa-blue) 5%, transparent);
  transition: transform .16s ease, border-color .16s ease;
}

.chapter-card:hover,
.chapter-card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--dsa-blue);
}

.chapter-card small {
  color: var(--dsa-orange);
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.chapter-card strong {
  font-size: 1.05rem;
}

.chapter-card span {
  color: var(--md-default-fg-color--light);
}

.md-typeset table:not([class]) {
  display: table;
  width: 100%;
}

@media screen and (min-width: 76.25em) {
  .md-main__inner {
    align-items: stretch;
  }

  .md-sidebar {
    height: auto;
    padding: 0;
  }

  .md-sidebar--primary {
    position: relative;
    top: 0 !important;
    align-self: stretch;
    flex: 0 0 var(--dsa-rail-width);
    width: var(--dsa-rail-width);
    border-right: 1px solid var(--dsa-line);
    background: color-mix(in srgb, var(--dsa-panel) 72%, transparent);
  }

  .md-sidebar--primary .md-sidebar__scrollwrap {
    position: sticky;
    top: var(--dsa-header-height);
    height: calc(100vh - var(--dsa-header-height)) !important;
    margin: 0;
    padding: 1.25rem .8rem 2rem;
    overflow-y: auto;
    background: transparent;
  }

  .md-main .md-sidebar--secondary {
    display: none !important;
  }

  .md-content {
    min-width: 0;
    margin: 0;
  }

  .md-content__inner {
    width: min(100% - 3rem, 52rem);
    margin-inline: auto;
  }
}

@media (max-width: 800px) {
  .hero-grid,
  .chapter-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-grid pre {
    transform: none;
  }

  .md-typeset h1 {
    font-size: clamp(2.05rem, 10vw, 3rem);
  }

  .md-content__inner {
    padding-top: 1.6rem;
  }

  .reader-toc__links {
    display: grid;
  }
}

@media (prefers-reduced-motion: reduce) {
  .chapter-card {
    transition: none;
  }
}