/* Challenge page: status, subtracks with a recorded run each, planned stages and awards. Reuses the shared cards, pills and section headings. */
.initiative-pillars{--cols:3;--cols-cap:3}
.open-call{margin:30px 0 0;max-width:760px;font-size:16px;line-height:1.8;color:var(--soft)}
.open-call-link{margin:6px 0 0}

.status{display:inline-flex;align-items:center;white-space:nowrap;border:1px solid var(--line);border-radius:999px;padding:3px 10px;font-family:var(--sans);font-size:11.5px;line-height:1.6;letter-spacing:0;text-transform:none;color:var(--soft);background:var(--tint)}
.status.is-open{border-color:var(--ink);color:var(--ink);background:var(--surface)}
.status.is-tbc{border-style:dashed;border-color:var(--strong-line)}

/* One line under the hero says what is open, what is not and what is still to come. */
.status-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 32px;margin:30px 0 0;padding:0;list-style:none;max-width:900px}
.status-strip li{display:flex;flex-direction:column;align-items:flex-start;gap:10px;padding-top:14px;border-top:1px solid var(--line)}
.status-strip p{margin:0;font-size:14px;line-height:1.7;color:var(--soft)}

.track{padding:32px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
.track+.track{margin-top:24px}
.track{scroll-margin-top:calc(var(--header-offset,78px) + 58px)}
.track-head{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px}
.track-tag{font-family:var(--mono);font-size:11px;line-height:1.6;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.track h3{font-size:26px;font-weight:600;line-height:1.35;letter-spacing:-.02em;margin:18px 0 0}
.track-summary{max-width:780px;margin:12px 0 0;font-size:16px;line-height:1.8;color:var(--soft)}

/* Each challenge has its own recorded run: one video for the replication subtrack, two for business analysis. */
.track-body{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:0 44px;align-items:start;margin-top:26px}
.track-demos{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;margin-top:26px}
.track-video{display:flex;flex-direction:column;min-width:0;margin:0}
.track-video video{display:block;width:100%;height:auto;aspect-ratio:16/9;border:1px solid var(--line);border-radius:var(--radius);background:#111}
.track-video figcaption{display:flex;flex-direction:column;gap:8px;margin-top:16px;font-size:14px;line-height:1.7;color:var(--soft)}
.track-video figcaption p{margin:0}
.demo-label{display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px}
.demo-label code{font-size:12px;color:var(--muted)}
.track-video h4{margin:0;font-size:19px;font-weight:600;line-height:1.4;letter-spacing:-.01em;color:var(--ink)}
.demo-spec{font-family:var(--mono);font-size:12px;line-height:1.6;color:var(--muted)}
.demo-meta{display:flex;flex-wrap:wrap;gap:2px 14px;font-size:12px;line-height:1.7;color:var(--muted)}

/* The business cases keep the goal and work product visible, with deeper context on demand. */
#subtrack-professional .demo-deliverables{margin:10px 0 0;border-top:1px solid var(--line)}
#subtrack-professional .demo-deliverables>div{display:grid;grid-template-columns:48px minmax(0,1fr);gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
#subtrack-professional .demo-deliverables dt{font-family:var(--mono);font-size:12px;color:var(--ink)}
#subtrack-professional .demo-deliverables dd{margin:0}
#subtrack-professional .demo-brief{margin-top:8px}
#subtrack-professional .demo-brief summary{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:10px 0;cursor:pointer;list-style:none;font-weight:600;color:var(--ink)}
#subtrack-professional .demo-brief summary::-webkit-details-marker{display:none}
#subtrack-professional .demo-brief summary::after{content:'+';font-family:var(--mono);font-size:18px;font-weight:400}
#subtrack-professional .demo-brief[open] summary::after{content:'−'}
#subtrack-professional .demo-brief summary:focus-visible{outline:2px solid var(--ink);outline-offset:4px;border-radius:2px}
#subtrack-professional .demo-brief-body{padding:0 0 16px}
#subtrack-professional .demo-brief h5{margin:16px 0 6px;font-size:13px;font-weight:600;line-height:1.5;color:var(--ink)}
#subtrack-professional .demo-brief h5:first-child{margin-top:4px}
#subtrack-professional .demo-brief ul{margin:0;padding-left:19px}
#subtrack-professional .demo-brief li+li{margin-top:8px}
#subtrack-professional .demo-source-note{margin-top:8px;font-size:12px;line-height:1.7;color:var(--muted)}

.track-facts{display:grid;grid-template-columns:minmax(0,1fr);margin:0;border-top:1px solid var(--line)}
.track-body .track-facts{align-self:start}
.track>.track-facts{margin-top:26px;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 44px}
.track-facts div{display:grid;grid-template-columns:104px minmax(0,1fr);gap:14px;align-items:baseline;padding:14px 0;border-bottom:1px solid var(--line)}
.track-facts dt{font-family:var(--mono);font-size:11px;line-height:1.7;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.track-facts dd{margin:0;font-size:14px;line-height:1.7;color:var(--soft)}
.track-links{display:flex;flex-wrap:wrap;gap:6px 28px;margin-top:20px}
.track-links .text-link{margin-top:6px}

/* Five planned stages in one row; only the first is under way. */
.plan-stages{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:0 24px;margin:0;padding:0;list-style:none}
.plan-stage{padding-top:18px;border-top:1px solid var(--strong-line)}
.plan-stage.is-current{border-top-color:var(--ink)}
.plan-meta{display:flex;align-items:center;gap:10px;min-height:26px;margin-bottom:12px}
.plan-number{font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--muted)}
.plan-stage h3{margin:0;font-size:18px;font-weight:600;line-height:1.4;letter-spacing:-.01em}
.plan-stage p{margin:8px 0 0;font-size:14px;line-height:1.75;color:var(--soft)}

.award-grid{--cols:2}
.award h3{margin:0;font-size:24px;font-weight:600;line-height:1.35;letter-spacing:-.02em}
.award p{margin:12px 0 0;font-size:15px;line-height:1.8;color:var(--soft)}
.award .card-label{margin-bottom:16px}

.take-part{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px 28px;margin:0;padding:0;list-style:none}
.take-part li{display:flex;flex-direction:column;padding-top:18px;border-top:1px solid var(--ink)}
.take-part h3{margin:0;font-size:18px;font-weight:600;line-height:1.45;letter-spacing:-.01em}
.take-part p{flex:1;margin:8px 0 0;font-size:14px;line-height:1.75;color:var(--soft)}
.take-part .text-link{margin-top:14px;align-self:flex-start}
.take-part .soon-tag{margin-top:14px;align-self:flex-start;padding:2px 10px;border:1px dashed var(--line);border-radius:999px;font-size:13px;color:var(--soft)}

@media(max-width:1100px){
  .plan-stages{grid-template-columns:repeat(3,minmax(0,1fr));gap:28px 24px}
}
@media(max-width:1000px){
  .track-body,.track-demos,.track>.track-facts,.award-grid{grid-template-columns:1fr}
  .track-body .track-facts{margin-top:24px}
  .track-demos{gap:32px}
  .initiative-pillars,.status-strip{grid-template-columns:1fr}
  .take-part{grid-template-columns:repeat(2,minmax(0,1fr))}
  .status-strip{gap:14px}
}
@media(max-width:860px){
  .plan-stages{grid-template-columns:1fr;gap:0}
  .plan-stage{display:grid;grid-template-columns:96px minmax(0,1fr);gap:0 18px;padding:18px 0;border-top:0;border-bottom:1px solid var(--line)}
  .plan-stage:first-child{border-top:1px solid var(--strong-line)}
  .plan-stage.is-current{border-top:1px solid var(--ink)}
  .plan-meta{grid-row:1/3;flex-direction:column;align-items:flex-start;gap:8px;margin:0}
  .plan-stage h3,.plan-stage p{grid-column:2}
  .track{padding:24px}
  .track-facts div{grid-template-columns:1fr;gap:2px}
}

@media(max-width:700px){
  .take-part{grid-template-columns:1fr}
}

/* Econometric subtrack: research data, the Dev100 task set, then a recorded demonstration. */
#subtrack-econometric .replication-data,
#subtrack-econometric .replication-task-set{margin-top:28px;padding-top:24px;border-top:1px solid var(--line);scroll-margin-top:calc(var(--header-offset,78px) + 72px)}
#subtrack-econometric .replication-data h4,
#subtrack-econometric .replication-task-intro h4{margin:0;font-size:20px;font-weight:600;line-height:1.4;letter-spacing:-.01em}
#subtrack-econometric .replication-data p,
#subtrack-econometric .replication-task-intro p{max-width:84ch;margin:12px 0 0;font-size:15px;line-height:1.8;color:var(--soft)}
#subtrack-econometric .replication-data .text-link,
#subtrack-econometric .replication-task-intro .text-link{margin-top:14px}
#subtrack-econometric .replication-data .dataset-access{font-size:12px;color:var(--muted)}
#subtrack-econometric .replication-task-set{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.3fr);gap:28px 36px}
#subtrack-econometric .replication-task-set .track-facts{border-top:0}
#subtrack-econometric .replication-task-set .track-facts>div:first-child{padding-top:0}
#subtrack-econometric .replication-demo{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:24px 36px;margin-top:28px;padding-top:28px;border-top:1px solid var(--line)}
#subtrack-econometric .replication-demo figcaption{margin-top:0}
@media(max-width:860px){
  #subtrack-econometric .replication-task-set,
  #subtrack-econometric .replication-demo{grid-template-columns:1fr}
}