:root {
  --eq-reading-width: 900px;
  --eq-blue: #193b63;
  --eq-ink: #14243a;
  --eq-soft: #f3efe6;
  --eq-green: #176b58;
  --eq-warm: #fbf2df;
  --eq-accent: #a63d32;
  --eq-accent-soft: #f7e8df;
  --eq-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", serif;
  --eq-body: "Source Han Sans SC", "Noto Sans CJK SC", "Microsoft YaHei UI", sans-serif;
}

[data-md-color-scheme="default"] {
  --md-default-bg-color: #fffdf8;
  --md-primary-fg-color: #193b63;
  --md-accent-fg-color: #a43d32;
}

[data-md-color-scheme="slate"] {
  --md-primary-fg-color: #183b5c;
  --md-accent-fg-color: #d69c71;
}

.md-header {
  background: linear-gradient(90deg, #102a44, #193b63 62%, #244f68);
}

.md-tabs {
  background: #193b63;
}

.md-nav__link--active,
.md-nav__link:hover {
  color: var(--eq-accent) !important;
}

.md-content {
  background-image:
    linear-gradient(90deg, transparent 0, rgb(20 36 58 / 2%) 50%, transparent 100%),
    radial-gradient(circle at 20% 0%, rgb(166 61 50 / 4%), transparent 24rem);
}

body[data-eq-theme="opening"] {
  --eq-accent: #a43d32;
  --eq-accent-soft: #f7e8df;
}

body[data-eq-theme="python"] {
  --eq-accent: #176b58;
  --eq-accent-soft: #e2f1ea;
}

body[data-eq-theme="foundation"] {
  --eq-accent: #9a6228;
  --eq-accent-soft: #f7ead6;
}

body[data-eq-theme="strategies"] {
  --eq-accent: #9f303b;
  --eq-accent-soft: #f7e1e4;
}

body[data-eq-theme="machine-learning"] {
  --eq-accent: #355b9c;
  --eq-accent-soft: #e4ebf7;
}

body[data-eq-theme="project"] {
  --eq-accent: #6f477d;
  --eq-accent-soft: #eee3f1;
}

.md-grid {
  max-width: 1440px;
}

.md-content__inner {
  max-width: var(--eq-reading-width);
  margin-inline: auto;
}

.md-typeset {
  color: var(--eq-ink);
  font-family: var(--eq-body);
  font-size: 0.86rem;
  line-height: 2;
}

.md-typeset h1,
.md-typeset h2,
.md-typeset h3 {
  letter-spacing: -0.02em;
}

.md-typeset h1 {
  max-width: 18em;
  margin-top: 0.18em;
  color: var(--eq-ink);
  font-family: var(--eq-display);
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.22;
  text-wrap: balance;
  word-break: keep-all;
}

.md-typeset h1 .headerlink,
.md-typeset h2 .headerlink,
.md-typeset h3 .headerlink {
  opacity: 0;
  font-size: 0.58em;
  transition: opacity 120ms ease;
}

.md-typeset h1:hover .headerlink,
.md-typeset h2:hover .headerlink,
.md-typeset h3:hover .headerlink,
.md-typeset .headerlink:focus-visible {
  opacity: 0.55;
}

.eq-page-kicker,
.home-eyebrow {
  margin: 0 0 0.45rem !important;
  color: var(--eq-accent);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.17em;
  text-align: left !important;
}

.eq-page-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1.15rem;
  margin: -0.25rem 0 1.7rem;
  padding: 0.7rem 0;
  border-top: 1px solid color-mix(in srgb, var(--eq-accent) 25%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--eq-accent) 25%, transparent);
  color: var(--md-default-fg-color--light);
  font-size: 0.68rem;
}

.eq-page-stats strong {
  color: var(--eq-accent);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 0.78rem;
}

.md-typeset .eq-opening-paragraph::first-letter {
  float: left;
  margin: 0.08em 0.13em 0 0;
  color: var(--eq-accent);
  font-family: var(--eq-display);
  font-size: 3.5em;
  font-weight: 800;
  line-height: 0.82;
}

.eq-reading-progress {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, #47c2ff, #6d56e8);
  transition: width 80ms linear;
}

.lesson-meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 1rem 0 1.4rem;
}

.lesson-meta > div {
  min-height: 5.4rem;
  padding: 0.85rem 0.95rem;
  border: 1px solid color-mix(in srgb, var(--md-primary-fg-color) 24%, transparent);
  border-radius: 0.8rem;
  background: color-mix(in srgb, var(--md-primary-fg-color) 5%, var(--md-default-bg-color));
}

.lesson-meta strong,
.lesson-meta span {
  display: block;
}

.lesson-meta strong {
  margin-bottom: 0.25rem;
  color: var(--md-primary-fg-color);
  font-size: 0.72rem;
}

.lesson-meta span {
  font-size: 0.72rem;
  line-height: 1.55;
}

.course-route {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0.45rem;
  margin: 1.2rem 0 1.8rem;
  padding: 0;
  list-style: none;
}

.course-route li {
  position: relative;
  padding: 0.75rem 0.6rem;
  border-radius: 0.65rem;
  background: color-mix(in srgb, var(--md-primary-fg-color) 8%, var(--md-default-bg-color));
  font-size: 0.68rem;
  text-align: center;
}

.course-route li + li::before {
  position: absolute;
  top: 50%;
  left: -0.42rem;
  content: "›";
  color: var(--md-primary-fg-color);
  font-size: 1rem;
  transform: translateY(-52%);
}

.story-board,
.try-box,
.checkpoint,
.plain-words {
  margin: 1.2rem 0;
  padding: 1rem 1.1rem;
  border-radius: 0.85rem;
}

.story-board {
  border: 1px solid #d6def5;
  background: #f8faff;
  color: #172033;
}

.try-box {
  border: 1px solid #f1d29c;
  background: #fff9ee;
  color: #332711;
}

.checkpoint {
  border: 1px solid #a9dfcd;
  background: #eefbf6;
  color: #12342a;
}

.plain-words {
  border-left: 0.3rem solid var(--md-primary-fg-color);
  background: color-mix(in srgb, var(--md-primary-fg-color) 7%, var(--md-default-bg-color));
}

.md-typeset .eq-key-sentence {
  margin: 1.65rem 0;
  padding: 0.9rem 1.05rem 0.95rem;
  border-top: 1px solid color-mix(in srgb, var(--eq-accent) 32%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--eq-accent) 32%, transparent);
  color: color-mix(in srgb, var(--eq-accent) 80%, var(--eq-ink));
  font-family: var(--eq-display);
  font-size: clamp(0.98rem, 2vw, 1.12rem);
  font-weight: 700;
  line-height: 1.8;
  text-align: left;
}

.story-board > :first-child,
.try-box > :first-child,
.checkpoint > :first-child,
.plain-words > :first-child {
  margin-top: 0;
}

.story-board > :last-child,
.try-box > :last-child,
.checkpoint > :last-child,
.plain-words > :last-child {
  margin-bottom: 0;
}

.number-strip {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0.4rem;
  margin: 1rem 0;
}

.number-strip span {
  padding: 0.55rem 0.25rem;
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 0.55rem;
  background: var(--md-code-bg-color);
  font-weight: 650;
  text-align: center;
}

.eq-complete-card {
  margin: 2.5rem 0 1rem;
  padding: 1.1rem;
  border: 1px solid color-mix(in srgb, var(--md-primary-fg-color) 28%, transparent);
  border-radius: 0.9rem;
  background: color-mix(in srgb, var(--md-primary-fg-color) 5%, var(--md-default-bg-color));
}

.eq-complete-card p {
  margin: 0 0 0.8rem;
  text-align: left;
}

.eq-stage-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: var(--md-default-fg-color--light);
  font-size: 0.72rem;
}

.eq-stage-line span {
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--md-primary-fg-color) 12%, transparent);
  color: var(--md-primary-fg-color);
  font-weight: 700;
}

.eq-total-progress {
  margin: 0.6rem 0 0 !important;
  color: var(--md-default-fg-color--light);
  font-size: 0.68rem;
  text-align: center !important;
}

.eq-complete-button {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 0;
  border-radius: 0.65rem;
  background: var(--md-primary-fg-color);
  color: white;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
}

.eq-complete-button[data-complete="true"] {
  background: var(--eq-green);
}

.eq-course-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
  margin: 0 0 2.5rem;
}

.eq-course-nav a {
  display: flex;
  min-height: 5rem;
  flex-direction: column;
  justify-content: center;
  padding: 0.9rem 1rem;
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 0.75rem;
  background: var(--md-default-bg-color);
  color: var(--md-default-fg-color);
  text-decoration: none;
  transition: border-color 150ms ease, transform 150ms ease;
}

.eq-course-nav a:hover {
  border-color: var(--md-primary-fg-color);
  transform: translateY(-2px);
}

.eq-course-nav a:last-child {
  text-align: right;
}

.eq-course-nav small {
  margin-bottom: 0.2rem;
  color: var(--md-default-fg-color--light);
}

.eq-course-nav strong {
  font-size: 0.8rem;
}

.lab-launch {
  display: inline-flex;
  align-items: center;
  padding: 0.72rem 1rem;
  border-radius: 0.65rem;
  background: var(--md-primary-fg-color);
  color: white !important;
  font-weight: 700;
  text-decoration: none;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 1.2rem 0 2rem;
}

.hero-actions .secondary {
  border: 1px solid var(--md-primary-fg-color);
  background: transparent;
  color: var(--md-primary-fg-color) !important;
}

.md-typeset h2 {
  position: relative;
  margin-top: 2.7em;
  padding: 0.15em 0 0.3em 3rem;
  border: 0;
  color: var(--eq-accent);
  font-family: var(--eq-display);
  font-size: clamp(1.38rem, 3vw, 1.78rem);
  font-weight: 800;
  line-height: 1.35;
}

.md-typeset > h2::before {
  position: absolute;
  top: 0.34rem;
  left: 0;
  width: 2.25rem;
  padding-bottom: 0.22rem;
  border-bottom: 0.2rem solid var(--eq-accent);
  color: var(--eq-accent);
  content: attr(data-section-number);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 0.64rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.md-typeset h3 {
  margin-top: 2em;
  padding-left: 0.8rem;
  border-left: 0.18rem solid color-mix(in srgb, var(--eq-accent) 70%, transparent);
  color: color-mix(in srgb, var(--eq-accent) 86%, var(--eq-ink));
  font-family: var(--eq-display);
  font-size: 1.05rem;
  line-height: 1.5;
}

.md-typeset p {
  text-align: justify;
  text-justify: inter-ideograph;
}

.md-typeset > p > img,
.md-typeset figure img {
  display: block;
  width: auto;
  max-width: min(100%, 48rem);
  max-height: 34rem;
  margin-inline: auto;
  object-fit: contain;
  border: 1px solid rgb(19 39 67 / 12%);
  border-radius: 0.35rem;
  box-shadow: 0 0.9rem 2.5rem rgb(15 23 42 / 14%);
}

.md-typeset .eq-figure {
  width: 100%;
  max-width: 48rem;
  margin: 1.8rem auto 2.2rem;
  text-align: center;
}

.eq-figure-caption {
  display: block;
  margin: 0.65rem auto 0;
  color: var(--md-default-fg-color--light);
  font-family: var(--eq-display);
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  text-align: center;
}

.md-typeset blockquote {
  border-left-width: 0.22rem;
  border-radius: 0 0.35rem 0.35rem 0;
  background: color-mix(in srgb, var(--md-primary-fg-color) 7%, transparent);
  padding-top: 0.6rem;
  padding-bottom: 0.6rem;
}

.md-typeset table:not([class]) {
  font-size: 0.72rem;
}

.md-typeset table:not([class]) th {
  background: color-mix(in srgb, var(--eq-accent) 12%, var(--md-default-bg-color));
  color: color-mix(in srgb, var(--eq-accent) 85%, var(--eq-ink));
  font-family: var(--eq-display);
}

.home-deck {
  max-width: 34em;
  margin-top: -0.6rem !important;
  color: var(--md-default-fg-color--light);
  font-family: var(--eq-display);
  font-size: 1.08rem;
  line-height: 1.7;
  text-align: left !important;
}

.book-facts {
  display: grid;
  grid-template-columns: 0.7fr 0.9fr 0.7fr 1.7fr;
  gap: 1px;
  margin: -0.45rem 0 2.4rem;
  overflow: hidden;
  border: 1px solid #d6c8af;
  border-radius: 0.35rem;
  background: #d6c8af;
}

.book-facts > div {
  display: flex;
  min-height: 5.2rem;
  flex-direction: column;
  justify-content: center;
  padding: 0.75rem 0.9rem;
  background: #fbf6eb;
}

.book-facts strong {
  color: #173653;
  font-family: var(--eq-display);
  font-size: 1.22rem;
  line-height: 1.25;
}

.book-facts span {
  margin-top: 0.25rem;
  color: #756b5b;
  font-size: 0.62rem;
}

.md-typeset details {
  margin: 0.55rem 0;
  border-color: color-mix(in srgb, var(--md-primary-fg-color) 18%, transparent);
  border-radius: 0.7rem;
  background: color-mix(in srgb, var(--md-primary-fg-color) 3%, var(--md-default-bg-color));
}

.md-typeset details > summary {
  color: var(--md-primary-fg-color);
  font-weight: 700;
}

.md-typeset .highlight code {
  font-size: 0.72rem;
  line-height: 1.65;
}

.md-typeset .mermaid {
  margin-block: 1.5rem;
  text-align: center;
}

.lesson-practice,
.lesson-quick-check {
  position: relative;
  margin: 2.7rem 0 1.8rem;
  border-radius: 0.9rem;
}

.lesson-practice {
  padding: 1.25rem 1.4rem 1.1rem;
  border: 1px solid color-mix(in srgb, #8b5fbf 24%, transparent);
  background-color: color-mix(in srgb, #f5efff 72%, var(--md-default-bg-color));
  background-image: radial-gradient(circle at 1px 1px, rgb(126 87 163 / 8%) 1px, transparent 0);
  background-size: 16px 16px;
  box-shadow: 0 0.45rem 1.4rem rgb(73 42 102 / 7%);
  color: color-mix(in srgb, var(--md-default-fg-color) 88%, #55386f);
  font-size: 0.76rem;
  line-height: 1.72;
}

.lesson-practice::before,
.lesson-quick-check::before {
  display: inline-block;
  margin-bottom: 0.2rem;
  color: #7a4fa3;
  content: attr(data-section-label);
  font-family: "STKaiti", "KaiTi", "Noto Serif SC", serif;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.lesson-practice h2,
.lesson-quick-check h2 {
  margin: 0.1rem 0 0.8rem;
  padding: 0;
  border: 0;
  color: #68408f;
  font-family: "STKaiti", "KaiTi", "Noto Serif SC", serif;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
}

.lesson-practice h3 {
  margin-top: 1.25rem;
  color: #64447f;
  font-size: 0.82rem;
}

.lesson-practice p,
.lesson-practice li {
  text-align: left;
}

.lesson-practice details {
  margin: 0.38rem 0;
  border-color: rgb(112 73 146 / 17%);
  background: color-mix(in srgb, #ffffff 55%, transparent);
  font-size: 0.71rem;
}

.lesson-practice details > summary {
  color: #70508d;
  font-weight: 650;
}

.lesson-quick-check {
  padding: 1rem 1.2rem;
  border: 1px solid color-mix(in srgb, var(--md-primary-fg-color) 15%, transparent);
  background: color-mix(in srgb, var(--md-primary-fg-color) 4%, var(--md-default-bg-color));
  font-size: 0.76rem;
  line-height: 1.72;
}

.lesson-quick-check h2 {
  color: var(--md-primary-fg-color);
}

@media screen and (max-width: 76.234375em) {
  .md-content__inner {
    max-width: none;
  }
}

@media screen and (max-width: 44.984375em) {
  .md-typeset {
    font-size: 0.78rem;
    line-height: 1.8;
  }

  .md-typeset p {
    text-align: left;
  }

  .md-typeset h1 {
    font-size: 2rem;
    word-break: normal;
  }

  .md-typeset h2 {
    padding-left: 2.35rem;
    font-size: 1.32rem;
  }

  .md-typeset > h2::before {
    width: 1.75rem;
  }

  .md-typeset .eq-figure {
    margin-right: 0;
    margin-left: 0;
  }

  .book-facts {
    grid-template-columns: 1fr 1fr;
  }

  .md-typeset .highlight {
    max-width: 100%;
    margin-right: 0;
    margin-left: 0;
  }

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

  .md-typeset__scrollwrap {
    max-width: 100%;
    margin-right: 0;
    margin-left: 0;
  }

  .md-typeset .arithmatex {
    max-width: 100%;
    margin-right: 0;
    margin-left: 0;
  }

  .md-typeset p > code,
  .md-typeset li > code,
  .md-typeset td > code {
    white-space: normal;
    overflow-wrap: anywhere;
    padding-right: 0.08em;
    padding-left: 0.08em;
  }

  .lesson-meta,
  .eq-course-nav {
    grid-template-columns: 1fr;
  }

  .course-route {
    grid-template-columns: 1fr;
  }

  .course-route li + li::before {
    top: -0.64rem;
    left: 50%;
    transform: translateX(-50%) rotate(90deg);
  }

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

  .story-board,
  .try-box,
  .checkpoint,
  .plain-words {
    padding: 0.9rem;
  }

  .lesson-practice,
  .lesson-quick-check {
    padding: 0.9rem;
  }
}