/* Engineering the Agent Loop article ------------------------------------ */

.article-detail-page .article-hero {
  padding: clamp(2.5rem, 5vw, 4.5rem) 0;
  border-bottom: 1px solid var(--studio-line);
  background: var(--home-paper);
}

.article-detail-page .article-hero-inner::before {
  width: 38px;
  height: 2px;
  display: none;
  margin-bottom: 28px;
  background: var(--studio-coral);
  content: "";
}

.article-detail-page .article-hero h1 {
  max-width: 17ch;
  margin: 0;
  color: var(--studio-forest);
  font-family: var(--font-body);
  font-size: clamp(3rem, 6.5vw, 5.75rem);
  font-weight: 700;
  letter-spacing: -0.055em;
  line-height: 0.96;
  text-wrap: balance;
}

.article-detail-page .article-deck {
  max-width: 50rem;
  margin: 1.75rem 0 0;
  color: var(--home-muted);
  font-family: var(--font-body);
  font-size: clamp(1.35rem, 2.4vw, 2rem);
  line-height: 1.38;
}

.article-detail-page .article-meta {
  display: flex;
  gap: 0.65rem 1.4rem;
  flex-wrap: wrap;
  margin-top: 2rem;
  color: var(--studio-muted);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.article-detail-page .article-meta span + span::before {
  margin-right: 1.4rem;
  color: var(--studio-coral);
  content: "·";
}

.article-detail-page .article-proof-jump {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.75rem 1.5rem;
  align-items: center;
  margin-top: 2rem;
  padding: 1.1rem 0;
  border-top: 1px solid var(--studio-forest);
  border-bottom: 1px solid var(--studio-forest);
  color: var(--studio-forest);
  text-decoration: none;
}

.article-detail-page .article-proof-jump > span:first-child {
  color: var(--studio-coral);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.article-detail-page .article-proof-jump strong {
  font-family: var(--font-body);
  font-size: clamp(1rem, 1.7vw, 1.35rem);
  font-weight: 600;
}

.article-detail-page .article-proof-jump > span:last-child {
  color: var(--studio-muted);
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
}

.article-detail-page .article-proof-jump:hover,
.article-detail-page .article-proof-jump:focus-visible {
  color: var(--studio-coral);
}

.article-detail-page .article-layout {
  display: grid;
  grid-template-columns: minmax(180px, 0.34fr) minmax(0, 1fr);
  gap: clamp(2.5rem, 7vw, 7rem);
  align-items: start;
  padding-top: clamp(2.5rem, 5vw, 4.5rem);
  padding-bottom: clamp(5rem, 9vw, 8rem);
}

.article-detail-page .article-rail {
  position: sticky;
  top: 120px;
  padding-top: 0.4rem;
  border-top: 2px solid var(--studio-forest);
}

.article-detail-page .article-rail p {
  margin: 0.85rem 0 1.5rem;
  color: var(--studio-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.article-detail-page .article-rail .article-rail-label {
  margin-bottom: 0;
  color: var(--studio-coral);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.article-detail-page .article-body {
  min-width: 0;
  width: min(100%, 820px);
}

.article-detail-page .article-body p,
.article-detail-page .article-body li {
  color: var(--home-ink);
  font-size: clamp(1.04rem, 1.25vw, 1.15rem);
  line-height: 1.82;
}

.article-detail-page .article-body p {
  margin: 0 0 1.4rem;
}

.article-detail-page .article-body .article-lede {
  margin-bottom: 3.4rem;
  color: var(--studio-forest);
  font-family: var(--font-body);
  font-size: clamp(1.4rem, 2.3vw, 1.9rem);
  line-height: 1.5;
}

.article-detail-page .article-body h2,
.article-detail-page .article-cta h2 {
  color: var(--studio-forest);
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.06;
  text-wrap: balance;
}

.article-detail-page .article-body h2 {
  margin: 4rem 0 1.35rem;
  font-size: clamp(2rem, 3.5vw, 2.75rem);
}

.article-detail-page .article-body code {
  padding: 0.1em 0.3em;
  border: 1px solid var(--studio-line);
  color: var(--studio-forest);
  background: var(--studio-stone);
  font-family: var(--mono);
  font-size: 0.84em;
}

.article-detail-page .article-body blockquote {
  margin: 3rem 0;
  padding: 0 0 0 1.6rem;
  border-left: 3px solid var(--studio-coral);
  color: var(--studio-forest);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.45rem, 2.6vw, 2.1rem);
  line-height: 1.45;
}

.article-detail-page .article-body ul {
  display: grid;
  gap: 0.85rem;
  margin: 0;
  padding-left: 1.35rem;
}

.article-detail-page .article-recording-showcase {
  margin: 3rem 0 4rem;
  scroll-margin-top: 110px;
}

.article-detail-page .article-recording-showcase > header {
  padding: 1.3rem 0 1.5rem;
  border-top: 2px solid var(--studio-forest);
}

.article-detail-page .article-recording-showcase > header > span,
.article-detail-page .article-loop-showcase span,
.article-detail-page .article-recording-watch > strong {
  color: var(--studio-coral);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.article-detail-page .article-recording-showcase > header h2 {
  margin: 0.65rem 0 0.8rem;
}

.article-detail-page .article-recording-showcase > header p {
  max-width: 43rem;
  margin: 0;
}

.article-detail-page .article-recording-showcase figure {
  margin: 0;
  color: var(--studio-paper);
  background: var(--studio-forest);
}

.article-detail-page .article-recording-showcase video {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--studio-forest);
  background: #111;
}

.article-detail-page .article-recording-showcase figcaption {
  padding: 1rem clamp(1rem, 3vw, 1.5rem);
  color: rgba(251, 250, 245, 0.76);
  font-size: 0.82rem;
  line-height: 1.6;
}

.article-detail-page .article-recording-watch {
  display: grid;
  grid-template-columns: minmax(140px, 0.25fr) minmax(0, 1fr);
  gap: 1.5rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--studio-line);
}

.article-detail-page .article-recording-watch ol {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem 1.6rem;
  margin: 0;
  padding-left: 1.2rem;
}

.article-detail-page .article-recording-watch li {
  color: var(--studio-muted);
  font-size: 0.86rem;
  line-height: 1.55;
}

.article-detail-page .article-loop-showcase {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 2.4rem 0;
  background: var(--studio-line);
}

.article-detail-page .article-loop-showcase div {
  display: grid;
  gap: 0.7rem;
  min-height: 115px;
  padding: 1.2rem;
  background: var(--studio-stone);
}

.article-detail-page .article-loop-showcase strong {
  color: var(--studio-forest);
  font-family: var(--font-body);
  font-size: clamp(1.05rem, 1.8vw, 1.3rem);
  font-weight: 600;
  line-height: 1.35;
}

.article-detail-page .article-scope-callout {
  margin: 3.5rem 0;
  padding: clamp(1.3rem, 3vw, 2rem);
  border-left: 4px solid var(--studio-coral);
  color: var(--home-ink);
  background: var(--home-sand);
}

.article-detail-page .article-solution-evolution {
  margin: 3.2rem 0 4rem;
  border-top: 2px solid var(--studio-forest);
  border-bottom: 1px solid var(--studio-line);
}

.article-detail-page .article-solution-evolution > header {
  display: flex;
  gap: 1rem;
  align-items: baseline;
  justify-content: space-between;
  padding: 1.25rem 0;
}

.article-detail-page .article-solution-evolution > header span,
.article-detail-page .article-solution-evolution article span {
  color: var(--studio-coral);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.article-detail-page .article-solution-evolution > header strong {
  max-width: 31rem;
  color: var(--studio-forest);
  font-family: var(--font-body);
  font-size: clamp(1.2rem, 2.2vw, 1.65rem);
  font-weight: 600;
  line-height: 1.35;
  text-align: right;
}

.article-detail-page .article-solution-evolution > div {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--studio-line);
}

.article-detail-page .article-solution-evolution article {
  display: grid;
  gap: 0.75rem;
  min-width: 0;
  padding: clamp(1rem, 2.5vw, 1.45rem);
  background: var(--studio-stone);
}

.article-detail-page .article-solution-evolution article strong {
  color: var(--studio-forest);
  font-family: var(--font-body);
  font-size: clamp(1rem, 1.7vw, 1.2rem);
  font-weight: 600;
  line-height: 1.4;
}

.article-detail-page .article-body .article-solution-evolution > p {
  margin: 0;
  padding: 1.1rem 0;
  color: var(--studio-muted);
  font-size: 0.86rem;
  line-height: 1.6;
}

.article-detail-page .article-scope-callout strong {
  color: var(--studio-coral);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.article-detail-page .article-body .article-scope-callout p {
  margin: 0.75rem 0 0;
  color: var(--home-muted);
  font-size: 0.96rem;
  line-height: 1.7;
}

.article-detail-page .article-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 2.75rem 0;
  border-top: 1px solid var(--studio-line);
  border-bottom: 1px solid var(--studio-line);
}

.article-detail-page .article-metrics div {
  min-height: 180px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.5rem;
}

.article-detail-page .article-metrics div + div {
  border-left: 1px solid var(--studio-line);
}

.article-detail-page .article-metrics div:nth-child(2) {
  background: var(--studio-coral-soft);
}

.article-detail-page .article-metrics strong {
  color: var(--studio-coral);
  font-family: var(--font-body);
  font-size: clamp(2.8rem, 5vw, 4.8rem);
  font-weight: 600;
  letter-spacing: -0.05em;
}

.article-detail-page .article-metrics span {
  color: var(--studio-forest);
  font-family: var(--font-body);
  line-height: 1.35;
}

.article-detail-page .article-evidence-note {
  margin-top: 4.5rem;
  padding-top: 0.25rem;
  border-top: 2px solid var(--studio-forest);
}

.article-detail-page .article-demonstration-proof {
  scroll-margin-top: 110px;
}

.article-detail-page .article-proof-record {
  margin: 2.6rem 0;
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--studio-line);
  color: var(--studio-forest);
  background: var(--studio-stone);
}

.article-detail-page .article-proof-record-heading {
  display: flex;
  gap: 1rem;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: 1.15rem;
  border-bottom: 2px solid var(--studio-forest);
}

.article-detail-page .article-proof-record-heading span,
.article-detail-page .article-proof-record dt,
.article-detail-page .article-series-roadmap article > span,
.article-detail-page .article-evidence-snapshot dt {
  color: var(--studio-coral);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.article-detail-page .article-proof-record-heading strong {
  font-family: var(--font-body);
  font-size: clamp(1.15rem, 2vw, 1.5rem);
  font-weight: 600;
}

.article-detail-page .article-proof-record dl {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
}

.article-detail-page .article-proof-record dl > div {
  min-width: 0;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--studio-line);
}

.article-detail-page .article-proof-record dl > div:nth-child(odd) {
  padding-right: 1.25rem;
}

.article-detail-page .article-proof-record dl > div:nth-child(even) {
  padding-left: 1.25rem;
  border-left: 1px solid var(--studio-line);
}

.article-detail-page .article-proof-record dd,
.article-detail-page .article-evidence-snapshot dd {
  margin: 0.55rem 0 0;
  color: var(--studio-forest);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.article-detail-page .article-proof-record dd code,
.article-detail-page .article-evidence-snapshot dd code {
  word-break: break-all;
}

.article-detail-page .article-proof-record > p {
  margin: 1.35rem 0 0.9rem;
  color: var(--studio-muted);
  font-size: 0.94rem;
  line-height: 1.65;
}

.article-detail-page .article-proof-record > a {
  color: var(--studio-forest);
  font-size: 0.82rem;
  font-weight: 700;
}

.article-detail-page .article-series-roadmap {
  margin-top: 4.5rem;
}

.article-detail-page .article-series-roadmap > div {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 2rem;
  background: var(--studio-line);
}

.article-detail-page .article-series-roadmap article {
  min-width: 0;
  padding: clamp(1.3rem, 3vw, 2rem);
  background: var(--studio-stone);
}

.article-detail-page .article-series-roadmap article > strong {
  display: block;
  margin: 0.6rem 0;
  color: var(--studio-forest);
  font-family: var(--font-body);
  font-size: clamp(1.45rem, 2.5vw, 2rem);
  font-weight: 600;
}

.article-detail-page .article-series-roadmap article > p {
  margin: 0;
  color: var(--studio-muted);
  font-size: 0.94rem;
  line-height: 1.65;
}

.article-detail-page .article-evidence-snapshot {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 2rem 0;
  border-top: 1px solid var(--studio-line);
}

.article-detail-page .article-evidence-snapshot > div {
  min-width: 0;
  padding: 1rem 0;
  border-bottom: 1px solid var(--studio-line);
}

.article-detail-page .article-evidence-snapshot > div:nth-child(odd) {
  padding-right: 1.25rem;
}

.article-detail-page .article-evidence-snapshot > div:nth-child(even) {
  padding-left: 1.25rem;
  border-left: 1px solid var(--studio-line);
}

.article-detail-page .article-evidence-note h2 {
  margin-top: 1.5rem;
}

.article-detail-page .article-cta {
  padding: clamp(4rem, 8vw, 7rem) 0;
  color: var(--home-ink);
  background: var(--home-sand);
}

.article-detail-page .article-cta-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(2rem, 6vw, 6rem);
  align-items: end;
}

.article-detail-page .article-cta h2 {
  max-width: 17ch;
  margin: 0;
  color: var(--home-ink);
  font-size: clamp(2.5rem, 5vw, 4.8rem);
}

.article-detail-page .article-cta p:not(.eyebrow) {
  max-width: 46rem;
  color: var(--home-muted);
  line-height: 1.7;
}

.article-detail-page .article-cta-actions {
  display: grid;
  gap: 0.85rem;
  min-width: min(100%, 280px);
}

.article-detail-page .article-cta .button {
  border-color: var(--home-accent);
  color: white;
  background: var(--home-button);
}

.article-detail-page .article-cta .button-ghost {
  color: var(--home-ink);
  background: transparent;
}

@media (max-width: 900px) {
  .article-detail-page .article-proof-jump {
    grid-template-columns: 1fr;
  }

  .article-detail-page .article-proof-jump > span:last-child {
    white-space: normal;
  }

  .article-detail-page .article-layout {
    grid-template-columns: 1fr;
  }

  .article-detail-page .article-rail {
    position: static;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 0 1.25rem;
  }

  .article-detail-page .article-rail p {
    margin-top: 0.65rem;
  }

  .article-detail-page .article-cta-inner {
    grid-template-columns: 1fr;
    align-items: start;
  }
}

@media (max-width: 640px) {
  .article-detail-page .article-meta {
    display: grid;
  }

  .article-detail-page .article-meta span + span::before {
    display: none;
  }

  .article-detail-page .article-rail {
    display: block;
  }

  .article-detail-page .article-proof-record dl,
.article-detail-page .article-evidence-snapshot,
.article-detail-page .article-series-roadmap > div,
.article-detail-page .article-loop-showcase,
.article-detail-page .article-solution-evolution > div,
.article-detail-page .article-recording-watch,
.article-detail-page .article-recording-watch ol {
    grid-template-columns: 1fr;
  }

  .article-detail-page .article-solution-evolution > header {
    display: grid;
  }

  .article-detail-page .article-solution-evolution > header strong {
    text-align: left;
  }

  .article-detail-page .article-proof-record dl > div:nth-child(odd),
.article-detail-page .article-proof-record dl > div:nth-child(even),
.article-detail-page .article-evidence-snapshot > div:nth-child(odd),
.article-detail-page .article-evidence-snapshot > div:nth-child(even) {
    padding-right: 0;
    padding-left: 0;
    border-left: 0;
  }

  .article-detail-page .article-metrics {
    grid-template-columns: 1fr;
  }

  .article-detail-page .article-metrics div {
    min-height: 150px;
  }

  .article-detail-page .article-metrics div + div {
    border-top: 1px solid var(--studio-line);
    border-left: 0;
  }
}
.article-detail-page .article-io-comparison {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin: 28px 0 16px;
}

.article-detail-page .article-io-panel {
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--studio-line);
  border-radius: 3px;
  background: var(--home-sand);
}

.article-detail-page .article-io-panel h3 {
  margin: 0 0 8px;
  font-size: 1.35rem;
}

.article-detail-page .article-io-label,
.article-detail-page .article-io-caption {
  font-size: 0.875rem;
  line-height: 1.6;
}

.article-detail-page .article-input-card {
  margin-top: 24px;
  padding: 24px;
  background: white;
  border-left: 3px solid var(--home-accent);
}

.article-detail-page .article-input-card h4 {
  margin: 12px 0 20px;
  font-size: 1.3rem;
  line-height: 1.4;
}

.article-detail-page .article-input-card p,
.article-detail-page .article-input-card a {
  font-size: 0.95rem;
  line-height: 1.6;
}

.article-detail-page .article-io-company { font-weight: 600; }

.article-detail-page .article-expected-record {
  margin: 24px 0 0;
  padding: 20px;
  background: var(--home-ink);
  color: var(--home-paper);
  border-radius: 3px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-size: 0.85rem;
  line-height: 1.85;
}

.article-detail-page .article-expected-record code {
  padding: 0;
  border: 0;
  border-radius: 0;
  color: inherit;
  background: transparent;
}

@media (max-width: 700px) {
  .article-detail-page .article-io-comparison { grid-template-columns: 1fr; }
  .article-detail-page .article-io-panel { padding: 18px; }
}

.article-detail-page .article-cta .button:hover { background: var(--accent-deep); color: white; }
.article-detail-page .article-cta .button-ghost:hover { background: var(--home-paper); color: var(--home-accent); }