:root {
  --deepdoc-file-dot-size: 10px;
  --deepdoc-code-height: 100%;
  --deepdoc-toc-offset: 14px;
  --deepdoc-section-gap: clamp(84px, 10vw, 132px);
  --deepdoc-copy-measure: 690px;
}

.deepdoc-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(420px, 0.8fr);
  align-items: center;
  gap: clamp(42px, 7vw, 96px);
}

.deepdoc-hero-copy {
  max-width: var(--deepdoc-copy-measure);
}

.deepdoc-kicker {
  margin-bottom: 18px;
  color: var(--color-brand-deep);
  font-family: var(--font-code);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.deepdoc-hero h1 {
  max-width: 12em;
  font-size: clamp(34px, 3.4vw, 48px);
}

.deepdoc-lead {
  max-width: 42em;
  margin-bottom: 28px;
  color: var(--color-muted);
  font-size: clamp(17px, 1.5vw, 21px);
  line-height: 1.75;
}

.deepdoc-file {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-window);
  background: var(--color-sidebar);
  box-shadow: var(--shadow-float);
  transform: rotate(0.5deg);
}

.deepdoc-file-head {
  display: flex;
  min-height: 52px;
  align-items: center;
  gap: 8px;
  padding-inline: 18px;
  border-bottom: 1px solid var(--color-sidebar-active);
  color: var(--color-sidebar-text);
}

.deepdoc-file-head span {
  width: var(--deepdoc-file-dot-size);
  height: var(--deepdoc-file-dot-size);
  flex-shrink: 0;
  border: 1px solid var(--color-sidebar-text);
  border-radius: var(--radius-pill);
}

.deepdoc-file-head span:first-child {
  border-color: var(--color-brand);
  background: var(--color-brand);
}

.deepdoc-file-head span:nth-child(2) {
  border-color: var(--color-sketch-blue);
  background: var(--color-sketch-blue);
}

.deepdoc-file-head strong {
  margin-left: 8px;
  overflow: hidden;
  color: var(--color-sidebar-text);
  font: 12px/1.4 var(--font-code);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.deepdoc-file pre {
  min-height: var(--deepdoc-code-height);
  margin: 0;
  padding: clamp(22px, 4vw, 34px);
  border: 0;
  border-radius: 0;
  font-size: clamp(12px, 1.2vw, 14px);
}

.deepdoc-intro {
  padding-top: 18px;
  padding-bottom: 56px;
}

.deepdoc-toc {
  position: sticky;
  top: var(--deepdoc-toc-offset);
  z-index: 20;
  margin-bottom: 32px;
  box-shadow: var(--shadow-chip);
}

.deepdoc-prose > section {
  padding-top: var(--deepdoc-section-gap);
  scroll-margin-top: 96px;
}

.deepdoc-prose > section:first-child {
  padding-top: 52px;
}

.deepdoc-prose h2 {
  position: relative;
  margin-bottom: 0.8em;
}

.deepdoc-prose h2::after {
  display: block;
  width: 42px;
  margin-top: 15px;
  border-top: 3px solid var(--color-sketch-blue);
  content: "";
  transform: rotate(-3deg);
}

.deepdoc-prose h3 {
  margin-top: 2.1em;
}

.deepdoc-prose p,
.deepdoc-prose li {
  line-height: 1.9;
}

.deepdoc-prose pre {
  margin-top: 1.6em;
  margin-bottom: 1.6em;
  box-shadow: var(--shadow-card);
}

.deepdoc-prose .table-wrap {
  margin-top: 1.7em;
  margin-bottom: 1.7em;
  border: 1px solid var(--color-line);
  background: var(--color-page);
}

.deepdoc-prose .data-table {
  margin: 0;
}

.deepdoc-prose .callout {
  margin-top: 1.8em;
  margin-bottom: 1.8em;
}

.deepdoc-checklist {
  display: grid;
  gap: 12px;
  padding-left: 0;
  list-style: none;
  counter-reset: deepdoc-step;
}

.deepdoc-checklist li {
  position: relative;
  padding: 18px 20px 18px 58px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  counter-increment: deepdoc-step;
}

.deepdoc-checklist li::before {
  position: absolute;
  top: 17px;
  left: 17px;
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border-radius: var(--radius-pill);
  background: var(--color-brand);
  color: var(--color-white-soft);
  content: counter(deepdoc-step);
  font: 700 12px/1 var(--font-code);
}

.deepdoc-next .panel {
  padding: clamp(24px, 5vw, 46px);
}

.deepdoc-next .panel p {
  max-width: 48em;
  color: var(--color-muted);
}

.deepdoc-next .button-row {
  margin-top: 24px;
}

@media (max-width: 900px) {
  .deepdoc-hero {
    grid-template-columns: 1fr;
  }

  .deepdoc-file {
    width: min(100%, 620px);
    transform: none;
  }

  .deepdoc-toc {
    position: relative;
    top: auto;
  }
}

@media (max-width: 640px) {
  .deepdoc-hero {
    gap: 34px;
  }

  .deepdoc-hero h1 {
    font-size: clamp(26px, 8vw, 30px);
  }

  .deepdoc-lead {
    font-size: 16px;
  }

  .deepdoc-file-head {
    min-height: 46px;
    padding-inline: 14px;
  }

  .deepdoc-file pre {
    padding: 18px;
    font-size: 11.5px;
  }

  .deepdoc-toc {
    margin-inline: var(--gutter);
    width: calc(100% - var(--gutter) * 2);
  }

  .deepdoc-prose > section {
    padding-top: 86px;
  }

  .deepdoc-checklist li {
    padding-right: 16px;
  }
}