:root {
  --ib-floor: #e8eeeb;
  --ib-panel: #f8fbf9;
  --ib-ink: #182226;
  --ib-muted: #5d6a6d;
  --ib-rule: #b8c5c2;
  --ib-blue: #275f73;
  --ib-yellow: #d2a43b;
  --ib-red: #b54b49;
  --ib-green: #587a63;
  --ib-rubber: #2d3437;
  --ib-shadow: rgba(24, 34, 38, 0.13);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--ib-floor);
  color: var(--ib-ink);
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.55;
}

a { color: inherit; text-decoration-color: var(--ib-yellow); text-decoration-thickness: 0.12em; text-underline-offset: 0.18em; }
a:hover { color: var(--ib-blue); }

.ib-home, .ib-article-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.ib-hero {
  padding: 28px 0 18px;
}

.ib-contract-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border: 1px solid var(--ib-rubber);
  background: var(--ib-rubber);
  color: var(--ib-panel);
  width: fit-content;
  max-width: 100%;
  font-family: Consolas, "Lucida Console", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ib-contract-strip span {
  padding: 8px 12px;
  border-right: 1px solid rgba(255,255,255,0.24);
}

.ib-contract-strip span:last-child { border-right: 0; }

.ib-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 18px;
  align-items: stretch;
  margin-top: 14px;
}

.ib-title-panel, .ib-tension-panel, .accountability-slab, .feature-brief, .drill-board, .ib-run-card, .article-top, .article-body, .clause-bench, .cue-rail {
  background: var(--ib-panel);
  border: 1px solid var(--ib-rule);
  box-shadow: 0 12px 0 var(--ib-shadow);
}

.ib-title-panel {
  padding: clamp(28px, 6vw, 76px);
  position: relative;
  overflow: hidden;
}

.ib-title-panel::after {
  content: "";
  position: absolute;
  right: 28px;
  top: 28px;
  width: 58px;
  height: 58px;
  border-top: 12px solid var(--ib-yellow);
  border-right: 12px solid var(--ib-blue);
  opacity: 0.9;
}

.ib-kicker, .section-label, .article-publication, .card-meta, .brief-margin, .cue-rail p, .clause-bench h2 {
  margin: 0;
  font-family: Consolas, "Lucida Console", monospace;
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ib-blue);
}

.ib-title-panel h1 {
  margin: 10px 0 18px;
  max-width: 880px;
  font-family: "Franklin Gothic Medium", "Segoe UI Display", Arial, sans-serif;
  font-size: clamp(3.1rem, 9vw, 8.4rem);
  line-height: 0.86;
  letter-spacing: -0.075em;
  text-transform: uppercase;
}

.ib-dek {
  max-width: 800px;
  margin: 0;
  font-size: clamp(1.05rem, 1.8vw, 1.45rem);
  line-height: 1.45;
  color: #243236;
}

.ib-editor {
  max-width: 680px;
  margin: 26px 0 0;
  color: var(--ib-muted);
}

.ib-tension-panel {
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 360px;
}

.interlock-strip {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 4px;
  align-items: end;
  min-height: 30px;
}

.interlock-strip span {
  display: block;
  height: 18px;
  background: var(--ib-blue);
  border: 1px solid var(--ib-rubber);
}

.interlock-strip span:nth-child(even) {
  height: 30px;
  background: var(--ib-yellow);
  transform: translateY(8px);
}

.ib-tension-panel h2 {
  margin: 34px 0 10px;
  font-family: "Franklin Gothic Medium", "Segoe UI Display", Arial, sans-serif;
  font-size: 1.8rem;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: -0.04em;
}

.ib-tension-panel ol, .cue-rail ol {
  margin: 0;
  padding-left: 20px;
}

.ib-tension-panel li {
  padding: 12px 0;
  border-top: 1px solid var(--ib-rule);
  color: #283538;
}

.topic-rack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0;
}

.topic-rack a, .topic-rack span {
  display: inline-block;
  padding: 9px 12px 8px;
  border: 1px solid var(--ib-rule);
  background: #dfe8e4;
  color: var(--ib-rubber);
  font-family: Consolas, "Lucida Console", monospace;
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
}

.accountability-slab {
  padding: clamp(22px, 4vw, 42px);
  margin: 0 0 20px;
}

.accountability-slab h2, .feature-brief h2, .drill-board h2, .post-run h2, .article-top h1 {
  font-family: "Franklin Gothic Medium", "Segoe UI Display", Arial, sans-serif;
  letter-spacing: -0.05em;
  line-height: 0.98;
  text-transform: uppercase;
}

.accountability-slab h2 {
  max-width: 900px;
  margin: 10px 0 28px;
  font-size: clamp(2rem, 4.8vw, 4.5rem);
}

.slab-cells {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 2px solid var(--ib-rubber);
  border-left: 2px solid var(--ib-rubber);
}

.slab-cells article {
  min-height: 210px;
  padding: 16px;
  border-right: 2px solid var(--ib-rubber);
  border-bottom: 2px solid var(--ib-rubber);
  background: #edf3f0;
}

.slab-cells span {
  display: inline-block;
  padding: 3px 7px;
  background: var(--ib-yellow);
  color: var(--ib-rubber);
  font-family: Consolas, "Lucida Console", monospace;
  font-weight: 700;
}

.slab-cells h3 {
  margin: 38px 0 8px;
  font-family: "Franklin Gothic Medium", "Segoe UI Display", Arial, sans-serif;
  font-size: 1.25rem;
  text-transform: uppercase;
  letter-spacing: -0.03em;
}

.slab-cells p { margin: 0; color: var(--ib-muted); }

.feature-brief {
  display: grid;
  grid-template-columns: 190px 1fr;
  margin: 22px 0;
}

.brief-margin {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 18px;
  background: #dce5e1;
  border-right: 1px solid var(--ib-rule);
}

.brief-margin span {
  padding-bottom: 10px;
  border-bottom: 1px solid var(--ib-rule);
}

.brief-copy {
  padding: clamp(24px, 5vw, 54px);
}

.feature-brief h2 {
  margin: 8px 0 16px;
  font-size: clamp(2rem, 5vw, 5rem);
}

.feature-brief p:last-child {
  max-width: 760px;
  margin: 0;
  font-size: 1.12rem;
}

.drill-board {
  padding: 26px;
  margin: 22px 0 30px;
  background: #f4f7f5;
}

.drill-board h2 {
  margin: 8px 0 22px;
  font-size: clamp(1.9rem, 4vw, 3.6rem);
}

.drill-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.drill-grid div {
  min-height: 150px;
  padding: 14px;
  border: 1px solid var(--ib-rule);
  border-top: 8px solid var(--ib-blue);
  background: var(--ib-panel);
}

.drill-grid div:nth-child(3) { border-top-color: var(--ib-red); }
.drill-grid div:nth-child(4) { border-top-color: var(--ib-green); }

.drill-grid strong {
  display: block;
  margin-bottom: 20px;
  font-family: "Franklin Gothic Medium", "Segoe UI Display", Arial, sans-serif;
  text-transform: uppercase;
}

.drill-grid span { color: var(--ib-muted); }

.post-run {
  padding: 8px 0 56px;
}

.post-run-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.post-run h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 4rem);
}

.post-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.ib-run-card {
  position: relative;
  padding: 18px;
  min-height: 310px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.ib-run-card::after {
  content: "";
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 72px;
  height: 44px;
  border-top: 1px solid var(--ib-rule);
  border-left: 1px solid var(--ib-rule);
  background: #e2e9e6;
}

.card-cue {
  display: flex;
  gap: 5px;
  margin-bottom: 18px;
}

.card-cue span {
  width: 20px;
  height: 20px;
  border: 1px solid var(--ib-rubber);
  background: var(--ib-yellow);
}

.card-cue span:nth-child(even) {
  background: var(--ib-blue);
  transform: translateY(9px);
}

.card-meta {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--ib-muted);
}

.ib-run-card h2 {
  margin: 22px 0 12px;
  font-family: "Franklin Gothic Medium", "Segoe UI Display", Arial, sans-serif;
  font-size: 1.65rem;
  line-height: 1;
  letter-spacing: -0.045em;
  text-transform: uppercase;
}

.ib-run-card h2 a { text-decoration: none; }
.ib-run-card h2 a:hover { text-decoration: underline; text-decoration-color: var(--ib-yellow); }

.ib-run-card p {
  margin: 0 0 24px;
  color: #334145;
}

.card-pocket {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-right: 70px;
}

.card-pocket span {
  padding: 4px 7px;
  border: 1px solid var(--ib-rule);
  color: var(--ib-muted);
  font-family: Consolas, "Lucida Console", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.article-top {
  margin: 28px 0 18px;
  padding: clamp(24px, 5vw, 54px);
}

.article-back {
  margin-bottom: 18px;
  font-family: Consolas, "Lucida Console", monospace;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.article-top h1 {
  max-width: 940px;
  margin: 8px 0 18px;
  font-size: clamp(2.7rem, 7vw, 7.2rem);
}

.article-meta {
  color: var(--ib-muted);
  font-family: Consolas, "Lucida Console", monospace;
  font-size: 0.82rem;
}

.promptbook-frame {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr) 260px;
  gap: 14px;
  align-items: start;
  padding-bottom: 64px;
}

.cue-rail, .clause-bench {
  position: sticky;
  top: 16px;
  padding: 16px;
}

.interlock-strip.vertical {
  grid-template-columns: 1fr;
  grid-auto-rows: 22px;
  width: 34px;
  min-height: 210px;
  margin-bottom: 22px;
}

.interlock-strip.vertical span {
  width: 24px;
  height: 20px;
}

.interlock-strip.vertical span:nth-child(even) {
  width: 34px;
  height: 20px;
  transform: translateX(14px);
}

.cue-rail ol {
  margin-top: 16px;
  color: var(--ib-muted);
  font-family: Consolas, "Lucida Console", monospace;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.cue-rail li { padding: 8px 0; border-top: 1px solid var(--ib-rule); }

.article-body {
  padding: clamp(24px, 5vw, 62px);
  font-size: 1.08rem;
}

.article-body > *:first-child { margin-top: 0; }
.article-body p, .article-body ul, .article-body ol { max-width: 720px; }
.article-body p { margin: 0 0 1.25em; }

.article-body h2, .article-body h3 {
  max-width: 780px;
  margin: 2em 0 0.7em;
  font-family: "Franklin Gothic Medium", "Segoe UI Display", Arial, sans-serif;
  line-height: 1.02;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.article-body h2 { font-size: clamp(1.8rem, 3vw, 3rem); }
.article-body h3 { font-size: 1.45rem; }

.article-body blockquote {
  max-width: 760px;
  margin: 2em 0;
  padding: 18px 22px;
  border-left: 10px solid var(--ib-yellow);
  background: #edf3f0;
  color: #263235;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 2em 0;
  font-size: 0.95rem;
}

.article-body th, .article-body td {
  border: 1px solid var(--ib-rule);
  padding: 10px;
  text-align: left;
  vertical-align: top;
}

.article-body th {
  background: #dfe8e4;
  font-family: Consolas, "Lucida Console", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.clause-bench h2 {
  color: var(--ib-red);
}

.clause-bench dl { margin: 18px 0 0; }
.clause-bench div { padding: 12px 0; border-top: 1px solid var(--ib-rule); }
.clause-bench dt { font-family: "Franklin Gothic Medium", "Segoe UI Display", Arial, sans-serif; text-transform: uppercase; }
.clause-bench dd { margin: 4px 0 0; color: var(--ib-muted); font-size: 0.92rem; }

@media (max-width: 980px) {
  .ib-hero-grid, .feature-brief, .promptbook-frame { grid-template-columns: 1fr; }
  .ib-tension-panel { min-height: auto; }
  .slab-cells, .drill-grid, .post-card-grid { grid-template-columns: repeat(2, 1fr); }
  .cue-rail, .clause-bench { position: static; }
  .cue-rail { display: none; }
}

@media (max-width: 640px) {
  .ib-home, .ib-article-shell { width: min(100% - 20px, 1180px); }
  .ib-title-panel, .article-top { padding: 24px; }
  .ib-title-panel h1, .article-top h1 { letter-spacing: -0.06em; }
  .slab-cells, .drill-grid, .post-card-grid { grid-template-columns: 1fr; }
  .brief-margin { flex-direction: row; flex-wrap: wrap; border-right: 0; border-bottom: 1px solid var(--ib-rule); }
  .post-run-head { display: block; }
}