.blog-main {
  overflow: hidden;
}

.blog-hero {
  padding-top: 112px;
  padding-bottom: 90px;
}

.blog-kicker,
.blog-section-label,
.blog-meta,
.player-boundary,
.player-overlay span,
.player-hint,
.result-detail-grid span,
.claim-boundary strong {
  font-family: "DM Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.075em;
  text-transform: uppercase;
}

.blog-kicker {
  margin-bottom: 30px;
  color: var(--accent-dark);
}

.blog-hero h1 {
  max-width: 1040px;
  margin-bottom: 42px;
  font-size: clamp(3.6rem, 7vw, 7rem);
}

.blog-deck {
  max-width: 850px;
  margin-bottom: 42px;
  color: #3e3e3a;
  font-size: clamp(1.2rem, 2vw, 1.65rem);
  line-height: 1.5;
}

.blog-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 30px;
  color: var(--muted);
}

.blog-meta span {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.blog-meta span:not(:last-child)::after {
  content: "";
  width: 4px;
  height: 4px;
  margin-left: 20px;
  border-radius: 50%;
  background: var(--accent-dark);
}

.blog-result-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.blog-result-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.blog-result-grid > div {
  min-height: 170px;
  display: grid;
  align-content: center;
  gap: 8px;
  padding: 28px 26px;
  border-right: 1px solid var(--line);
}

.blog-result-grid > div:first-child {
  padding-left: 0;
}

.blog-result-grid > div:last-child {
  border-right: 0;
}

.blog-result-grid strong {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 500;
  letter-spacing: -0.045em;
}

.blog-result-grid span {
  max-width: 220px;
  color: var(--muted);
  font-size: 12px;
}

.blog-section {
  padding-top: 130px;
  padding-bottom: 130px;
}

.blog-section-label {
  margin-bottom: 58px;
  color: var(--accent-dark);
}

.blog-copy-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 10%;
}

.blog-copy-grid h2,
.player-heading h2,
.learning-title,
.blog-cta h2 {
  margin: 0;
  font-size: clamp(2.3rem, 4.4vw, 4.6rem);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 1.02;
}

.blog-prose {
  max-width: 680px;
  color: #383834;
  font-size: 18px;
  line-height: 1.72;
}

.blog-prose p {
  margin-bottom: 28px;
}

.blog-prose p:last-child {
  margin-bottom: 0;
}

.experiment-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1.35fr auto 1fr;
  align-items: center;
  gap: 16px;
  margin-top: 90px;
  padding: 28px;
  border: 1px solid var(--line);
  font-family: "DM Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.04em;
  line-height: 1.5;
  text-transform: uppercase;
}

.experiment-flow > span:nth-child(even) {
  color: var(--accent-dark);
  font-size: 18px;
}

.experiment-flow strong {
  color: var(--accent-dark);
  font-weight: 500;
}

.plain-english {
  margin-top: 48px;
  padding: 36px 40px;
  border: 1px solid var(--line);
  background: var(--paper-dark);
}

.plain-english h3 {
  margin-bottom: 28px;
  font-family: "DM Mono", monospace;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-dark);
}

.plain-english dl {
  display: grid;
  gap: 26px;
  max-width: 720px;
  margin: 0;
}

.plain-english dt {
  margin-bottom: 8px;
  font-size: 17px;
  font-weight: 500;
  color: var(--ink);
}

.plain-english dd {
  margin: 0;
  font-size: 16px;
  line-height: 1.68;
  color: #4a4a44;
}

.blog-player-section {
  padding: 130px 0;
  background: var(--ink);
  color: var(--white);
}

.blog-section-label-dark {
  color: var(--accent);
}

.player-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.46fr);
  gap: 10%;
  align-items: end;
  margin-bottom: 54px;
}

.player-heading h2 {
  max-width: 800px;
  margin-bottom: 24px;
}

.player-heading > div > p {
  max-width: 650px;
  margin: 0;
  color: #aaa9a3;
  font-size: 15px;
}

.player-boundary {
  margin: 0;
  padding: 16px;
  border: 1px solid #44443f;
  color: #aaa9a3;
  line-height: 1.6;
}

.robot-playback {
  margin: 0;
  border: 1px solid #44443f;
  background: #11110f;
}

.robot-playback video {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  display: block;
  background: #0c2118;
}

.robot-playback figcaption {
  min-height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 18px;
  border-top: 1px solid #44443f;
  color: #85857f;
  font-family: "DM Mono", monospace;
  font-size: 9px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.video-transcript {
  border-top: 1px solid #44443f;
}

.video-transcript summary {
  padding: 16px 18px;
  color: #d2d2cb;
  cursor: pointer;
  font-family: "DM Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.video-transcript summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -4px;
}

.video-transcript > div {
  max-width: 900px;
  padding: 4px 18px 22px;
  color: #b9b9b2;
  font-size: 14px;
}

.video-transcript p {
  margin-bottom: 14px;
}

.video-transcript p:last-child {
  margin-bottom: 0;
}

.result-detail-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 90px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.result-detail-grid article {
  min-height: 230px;
  padding: 28px 26px;
  border-right: 1px solid var(--line);
}

.result-detail-grid article:first-child {
  padding-left: 0;
}

.result-detail-grid article:last-child {
  border-right: 0;
}

.result-detail-grid span {
  display: block;
  margin-bottom: 48px;
  color: var(--muted);
}

.result-detail-grid strong {
  display: block;
  margin-bottom: 15px;
  font-size: 28px;
  font-weight: 500;
}

.result-detail-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.blog-learning-section {
  padding: 130px 0;
  background: color-mix(in srgb, var(--accent) 14%, var(--paper));
}

.blog-learning-section .blog-section-label,
.blog-cta .blog-section-label {
  color: #4f3b9b;
}

.learning-title {
  max-width: 930px;
  margin-bottom: 80px;
}

.learning-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(17, 17, 16, 0.24);
}

.learning-grid article {
  min-height: 310px;
  padding: 28px 30px 40px 0;
  border-right: 1px solid rgba(17, 17, 16, 0.24);
}

.learning-grid article:not(:first-child) {
  padding-left: 30px;
}

.learning-grid article:last-child {
  border-right: 0;
}

.learning-grid .step-number {
  margin-bottom: 68px;
  color: var(--accent-dark);
}

.learning-grid h3 {
  max-width: 320px;
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.learning-grid p {
  margin: 0;
  color: #514f59;
  font-size: 14px;
}

.claim-boundary {
  max-width: 920px;
  margin: 90px 0 0 auto;
  padding: 24px 28px;
  border: 1px solid var(--line);
}

.claim-boundary strong {
  display: block;
  margin-bottom: 12px;
  color: var(--accent-dark);
}

.claim-boundary p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.blog-cta {
  padding: 100px 0;
  background: var(--paper-dark);
  border-top: 1px solid var(--line);
}

.blog-cta-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 60px;
}

.blog-cta h2 {
  max-width: 790px;
  margin-top: 22px;
  font-size: clamp(2.2rem, 4.2vw, 4rem);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 980px) {
  .blog-result-grid,
  .result-detail-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .blog-result-grid > div:nth-child(2),
  .result-detail-grid article:nth-child(2) {
    border-right: 0;
  }

  .blog-result-grid > div:nth-child(-n + 2),
  .result-detail-grid article:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .blog-result-grid > div:nth-child(3),
  .result-detail-grid article:nth-child(3) {
    padding-left: 0;
  }

  .experiment-flow {
    grid-template-columns: 1fr;
  }

  .experiment-flow > span:nth-child(even) {
    transform: rotate(90deg);
  }

}

@media (max-width: 760px) {
  .blog-hero {
    padding-top: 72px;
    padding-bottom: 64px;
  }

  .plain-english {
    padding: 26px 22px;
  }

  .blog-hero h1 {
    font-size: clamp(3rem, 15vw, 5rem);
  }

  .blog-meta {
    display: grid;
    gap: 8px;
  }

  .blog-meta span::after {
    display: none;
  }

  .blog-result-grid,
  .blog-copy-grid,
  .player-heading,
  .result-detail-grid,
  .learning-grid {
    grid-template-columns: 1fr;
  }

  .blog-result-grid > div,
  .blog-result-grid > div:first-child,
  .blog-result-grid > div:nth-child(3),
  .result-detail-grid article,
  .result-detail-grid article:first-child,
  .result-detail-grid article:nth-child(3),
  .learning-grid article,
  .learning-grid article:not(:first-child) {
    min-height: 0;
    padding: 28px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .blog-result-grid > div:last-child,
  .result-detail-grid article:last-child,
  .learning-grid article:last-child {
    border-bottom: 0;
  }

  .blog-section,
  .blog-player-section,
  .blog-learning-section {
    padding-top: 88px;
    padding-bottom: 88px;
  }

  .blog-section-label {
    margin-bottom: 38px;
  }

  .blog-copy-grid {
    gap: 38px;
  }

  .blog-prose {
    font-size: 16px;
  }

  .player-heading {
    gap: 34px;
  }

  .robot-playback figcaption {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }

  .video-transcript > div {
    font-size: 13px;
  }

  .result-detail-grid span,
  .learning-grid .step-number {
    margin-bottom: 26px;
  }

  .learning-grid article {
    min-height: 0;
  }

  .blog-cta-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

/* --- research index ---------------------------------------------------- */
/* The index lists entries oldest-relevant-last. Both pieces stay published:
   one asks whether a mapping is good, the other whether good mappings are
   worth anything to a policy. Neither answer replaces the other. */

.research-main {
  padding: 9rem 0 6rem;
}

.research-hero {
  max-width: 62ch;
  margin-bottom: 5rem;
}

.research-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4.5rem;
}

.research-entry {
  max-width: 68ch;
  padding-top: 2.5rem;
  border-top: 1px solid var(--line);
}

.research-date {
  margin: 0 0 0.9rem;
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.research-entry h2 {
  margin: 0 0 1.1rem;
  font-size: clamp(1.6rem, 2.6vw, 2.3rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.research-entry h2 a {
  text-decoration: none;
  border-bottom: 2px solid var(--accent);
}

.research-entry h2 a:hover {
  border-bottom-color: var(--accent-dark);
}

.research-entry p {
  color: var(--muted);
  line-height: 1.65;
}

.research-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.4rem;
}

.research-tags span {
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
}

.research-note {
  max-width: 62ch;
  margin-top: 5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}