.topic-report {
  --topic-rule: #303738;
  --topic-blue: #176b78;
  --topic-blue-soft: #dcecef;
  overflow-wrap: anywhere;
}

.topic-inner {
  width: min(calc(100% - 2rem), var(--content));
  margin-inline: auto;
}

.topic-masthead {
  color: #f5f7f4;
  background: var(--charcoal-2);
  border-bottom: 0.4rem solid var(--yellow);
}

.topic-masthead .topic-inner {
  padding-block: clamp(2.4rem, 7vw, 5.2rem) 2.2rem;
}

.topic-masthead h1 {
  max-width: 21ch;
  margin: 0.55rem 0 1rem;
  color: #fff;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.1rem, 4.6vw, 4.6rem);
  font-weight: 500;
  line-height: 1.04;
  letter-spacing: 0;
}

.topic-deck {
  max-width: 66ch;
  margin: 0;
  color: #dce2df;
  font-size: 1.05rem;
}

.topic-status {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 48rem;
  margin: 2.2rem 0 0;
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.topic-status div {
  padding: 0.8rem 1rem 0.8rem 0;
}

.topic-status div + div {
  padding-left: 1rem;
  border-left: 1px solid var(--line-dark);
}

.topic-status dt {
  color: #abb5b1;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.topic-status dd {
  margin: 0.2rem 0 0;
  color: #fff;
  font-variant-numeric: tabular-nums;
}

.topic-recommendation-band,
.topic-full-report,
.topic-source-band {
  padding-block: 4.5rem;
}

.topic-section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.75fr);
  gap: 0 3rem;
  align-items: end;
  margin-bottom: 2rem;
}

.topic-section-heading .eyebrow {
  grid-column: 1 / -1;
}

.topic-section-heading h2 {
  max-width: 20ch;
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: 0;
}

.topic-section-heading > p:last-child {
  margin: 0;
  color: var(--ink-soft);
}

.topic-recommendation-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--topic-rule);
  border-bottom: 1px solid var(--topic-rule);
}

[data-topic-recommendation] {
  min-width: 0;
  padding: 1.35rem;
  background: var(--surface);
}

[data-topic-recommendation] + [data-topic-recommendation] {
  border-left: 1px solid var(--topic-rule);
}

[data-topic-recommendation="frontier"] {
  border-top: 0.35rem solid var(--topic-blue);
}

[data-topic-recommendation="optimal"] {
  border-top: 0.35rem solid var(--green);
}

[data-topic-recommendation="cost-effective"] {
  border-top: 0.35rem solid var(--yellow);
}

.topic-index {
  margin: 0 0 1.35rem;
  color: var(--ink-soft);
  font: 700 0.72rem/1.2 ui-monospace, SFMono-Regular, Consolas, monospace;
}

[data-topic-recommendation] h3 {
  min-height: 3.25rem;
  margin: 0;
  font-size: 1.2rem;
  line-height: 1.3;
}

.topic-architecture {
  min-height: 8.4rem;
  margin: 1rem 0;
  padding: 1rem 0;
  color: var(--ink);
  font-weight: 700;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

[data-topic-recommendation] dl {
  margin: 0;
}

[data-topic-recommendation] dl div {
  margin-top: 0.9rem;
}

[data-topic-recommendation] dt {
  color: var(--ink-soft);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

[data-topic-recommendation] dd {
  margin: 0.15rem 0 0;
  font-size: 0.9rem;
}

.topic-source-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 1.2rem 0 0;
}

.topic-source-line a {
  padding: 0.25rem 0.45rem;
  color: #fff;
  background: var(--charcoal);
  font: 700 0.72rem/1.2 ui-monospace, SFMono-Regular, Consolas, monospace;
  text-decoration: none;
}

.topic-download-band {
  padding-block: 2.4rem;
  color: #fff;
  background: var(--topic-blue);
}

.topic-download-band .eyebrow {
  color: #e8f6f4;
}

.topic-download-layout {
  display: grid;
  grid-template-columns: minmax(15rem, 0.8fr) minmax(0, 1.2fr);
  gap: 2rem;
  align-items: center;
}

.topic-download-layout h2 {
  margin: 0.25rem 0 0;
  font-size: 1.55rem;
}

.topic-downloads {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid rgb(255 255 255 / 48%);
}

.topic-downloads a {
  min-width: 0;
  padding: 1rem;
  color: #fff;
  text-decoration: none;
}

.topic-downloads a + a {
  border-left: 1px solid rgb(255 255 255 / 48%);
}

.topic-downloads span {
  display: block;
  margin-bottom: 0.35rem;
  color: #e8f6f4;
  font: 800 0.7rem/1 ui-monospace, SFMono-Regular, Consolas, monospace;
}

.topic-full-report {
  background: var(--surface);
}

.topic-report-heading {
  display: block;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--line);
}

.topic-report-layout {
  display: grid;
  grid-template-columns: minmax(14rem, 18rem) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}

[data-topic-toc] {
  position: sticky;
  top: 1rem;
  max-height: calc(100vh - 2rem);
  overflow-y: auto;
  padding-right: 1rem;
  border-right: 1px solid var(--line);
}

.topic-toc-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.7rem;
  border-bottom: 2px solid var(--charcoal);
}

.topic-toc-heading span {
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}

[data-topic-toc] ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

[data-topic-toc] li {
  border-bottom: 1px solid var(--line);
}

[data-topic-toc] a {
  display: block;
  padding: 0.62rem 0;
  font-size: 0.78rem;
  line-height: 1.35;
  text-decoration: none;
}

[data-topic-toc] .toc-level-3 {
  padding-left: 0.8rem;
}

.topic-report-body {
  min-width: 0;
  max-width: var(--reading);
}

.topic-report-body h2,
.topic-report-body h3 {
  scroll-margin-top: 1rem;
}

.topic-report-body h2 {
  margin: 3.8rem 0 1rem;
  padding-top: 1.2rem;
  border-top: 0.2rem solid var(--charcoal);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 2rem;
  font-weight: 500;
  line-height: 1.18;
  letter-spacing: 0;
}

.topic-report-body h2:first-child {
  margin-top: 0;
}

.topic-report-body h3 {
  margin: 2.2rem 0 0.7rem;
  color: var(--topic-blue);
  font-size: 1.15rem;
}

.topic-report-body a {
  color: #075e6b;
}

.topic-report-body blockquote {
  margin-inline: 0;
  padding: 0.8rem 1rem;
  border-left: 0.3rem solid var(--yellow);
  background: var(--yellow-soft);
}

.topic-report-body .table-scroll {
  max-width: 100%;
  margin-block: 1.5rem;
  overflow-x: auto;
  border: 1px solid var(--line);
}

.topic-report-body .table-scroll table {
  margin: 0;
}

.topic-source-band {
  border-top: 1px solid var(--line);
}

.topic-source-list {
  border-top: 1px solid var(--topic-rule);
}

.topic-source-list details {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.topic-source-list summary {
  display: grid;
  grid-template-columns: 5rem minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: baseline;
  padding: 0.85rem 1rem;
  cursor: pointer;
}

.topic-source-list summary span,
.topic-source-list summary small {
  color: var(--ink-soft);
  font: 700 0.72rem/1.3 ui-monospace, SFMono-Regular, Consolas, monospace;
}

.topic-source-list summary strong {
  font-size: 0.88rem;
}

.topic-source-detail {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 1.2rem;
  align-items: start;
  padding: 0.9rem 1rem 1.2rem 7rem;
  background: var(--topic-blue-soft);
}

.topic-source-detail p {
  margin: 0;
  font-size: 0.84rem;
}

.topic-source-detail b {
  display: block;
  margin-bottom: 0.2rem;
}

.topic-source-detail a {
  font-size: 0.82rem;
  font-weight: 700;
}

@media (max-width: 860px) {
  .topic-status,
  .topic-section-heading,
  .topic-recommendation-grid,
  .topic-download-layout,
  .topic-downloads,
  .topic-report-layout {
    grid-template-columns: 1fr;
  }

  .topic-section-heading {
    align-items: start;
  }

  .topic-section-heading > p:last-child {
    margin-top: 0.8rem;
  }

  [data-topic-recommendation] + [data-topic-recommendation] {
    border-left: 0;
    border-top: 1px solid var(--topic-rule);
  }

  [data-topic-recommendation="optimal"],
  [data-topic-recommendation="cost-effective"] {
    box-shadow: inset 0 0.35rem var(--green);
  }

  [data-topic-recommendation="cost-effective"] {
    box-shadow: inset 0 0.35rem var(--yellow);
  }

  [data-topic-recommendation] h3,
  .topic-architecture {
    min-height: 0;
  }

  .topic-downloads a + a {
    border-top: 1px solid rgb(255 255 255 / 48%);
    border-left: 0;
  }

  [data-topic-toc] {
    position: static;
    max-height: 22rem;
    margin-bottom: 2.5rem;
    padding: 1rem;
    overflow-y: auto;
    border: 1px solid var(--line);
    background: var(--paper);
  }
}

@media (max-width: 560px) {
  .topic-inner {
    width: min(calc(100% - 1.25rem), var(--content));
  }

  .topic-masthead h1 {
    font-size: 2rem;
  }

  .topic-status {
    display: block;
  }

  .topic-status div + div {
    padding-left: 0;
    border-top: 1px solid var(--line-dark);
    border-left: 0;
  }

  .topic-recommendation-band,
  .topic-full-report,
  .topic-source-band {
    padding-block: 3rem;
  }

  .topic-source-list summary {
    grid-template-columns: 4.2rem minmax(0, 1fr);
    gap: 0.35rem 0.7rem;
  }

  .topic-source-list summary small {
    grid-column: 2;
  }

  .topic-source-detail {
    grid-template-columns: 1fr;
    padding: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .topic-report *,
  .topic-report *::before,
  .topic-report *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}