/* Engineering evidence and capabilities. */
.experience-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 36px; }
.experience-grid article { padding: 26px; border-top: 2px solid var(--red); background: var(--surface-1); }
.experience-grid h2 { margin: 14px 0 10px; font-size: 1.35rem; color: var(--fg); }
.experience-grid p { margin: 0; color: var(--fg-2); line-height: 1.7; }
.capability-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 20px; }
.capability-card { grid-column: span 2; padding: 28px; border: 1px solid var(--line-strong); border-radius: var(--radius-lg); background: var(--surface-1); display: flex; flex-direction: column; }
.capability-card:nth-child(n + 4) { grid-column: span 3; }
.capability-card h3 { margin: 16px 0 12px; font-size: 1.35rem; color: var(--fg); }
.capability-card p { margin: 0 0 20px; color: var(--fg-2); line-height: 1.7; }
.capability-card .capability-card__output { margin: auto 0 0; padding-top: 18px; border-top: 1px solid var(--line); color: var(--fg); font-size: .88rem; }
@media (max-width: 980px) {
  .capability-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .capability-card, .capability-card:nth-child(n + 4) { grid-column: auto; }
  .capability-card:last-child { grid-column: 1 / -1; }
}
@media (max-width: 680px) {
  .experience-grid, .capability-grid { grid-template-columns: 1fr; gap: 16px; }
  .capability-card:last-child { grid-column: auto; }
  .experience-grid article, .capability-card { padding: 24px; }
}

/* Legacy tool card layout. */
.rv-tools-page #rv-tools { padding-top: 72px; }
.rv-tools-page #rv-tools h1 { margin-top: 20px; font-size: clamp(2.4rem, 4.8vw, 3.8rem); line-height: 1.12; }
.rv-tools-grid .portfolio-card {
  --tool-color: #4169E1;
  --tool-glow: rgba(65, 105, 225, .22);
  --tool-tint: rgba(65, 105, 225, .10);
  border: 2px solid var(--tool-color);
  border-radius: 22px;
  min-height: 128px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 8px;
  padding: 30px 32px;
  background: linear-gradient(235deg, var(--tool-tint), transparent 80%), var(--surface-1);
  box-shadow: inset 0 0 22px -10px var(--tool-glow), 0 8px 28px -14px var(--tool-glow);
}
.rv-tools-grid .portfolio-card:nth-child(4n + 2) { --tool-color: #DE2B26; --tool-glow: rgba(222, 43, 38, .22); --tool-tint: rgba(222, 43, 38, .08); }
.rv-tools-grid .portfolio-card:nth-child(4n + 3) { --tool-color: #218554; --tool-glow: rgba(33, 133, 84, .24); --tool-tint: rgba(33, 133, 84, .10); }
.rv-tools-grid .portfolio-card:nth-child(4n) { --tool-color: #D4AF29; --tool-glow: rgba(212, 175, 41, .28); --tool-tint: rgba(212, 175, 41, .12); }
.rv-tools-grid .portfolio-card h3 { margin: 0; font-size: clamp(1.1rem, 2.4vw, 1.4rem); font-weight: 500; line-height: 1.5; color: var(--fg); }
.rv-tools-grid .tool-card__access { color: var(--fg-3); font-family: var(--font-mono); font-size: .7rem; letter-spacing: .07em; text-transform: uppercase; }
@media (max-width: 680px) {
  .rv-tools-page #rv-tools { padding-top: 44px; }
  .rv-tools-grid { gap: 16px; }
  .rv-tools-grid .portfolio-card { min-height: 108px; padding: 26px; }
}

/* Compact run excerpt on the RV-Tools page. */
.concurrency-example { border: 1px solid var(--line-strong); border-radius: var(--radius-lg); overflow: hidden; background: var(--surface-1); }
.concurrency-example__scroll-hint { display: none; margin: 0; padding: 14px 24px 0; color: var(--fg-3); font-size: .78rem; }
.concurrency-example__scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.concurrency-example table { width: 100%; min-width: 920px; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.concurrency-example caption { caption-side: top; padding: 20px 24px 12px; text-align: left; color: var(--fg-3); font-family: var(--font-mono); font-size: .75rem; }
.concurrency-example th, .concurrency-example td { padding: 14px 18px; border-bottom: 1px solid var(--line); text-align: right; white-space: nowrap; }
.concurrency-example thead th { color: var(--fg-2); background: var(--surface-2); font-size: .78rem; font-weight: 600; line-height: 1.45; }
.concurrency-example thead th span { color: var(--fg-3); font-weight: 400; }
.concurrency-example tbody th, .concurrency-example tbody td { color: var(--fg); font-family: var(--font-mono); font-size: .82rem; }
.concurrency-example tr > :first-child { text-align: left; }
.concurrency-example tbody tr:last-child > * { border-bottom: 0; }
.concurrency-example__insight { margin: 0; padding: 22px 24px; border-top: 1px solid var(--line-strong); color: var(--fg-2); line-height: 1.7; }
.engine-example table { min-width: 960px; }
.engine-example th, .engine-example td { text-align: left; white-space: normal; vertical-align: top; }
.engine-example tbody th { width: 22%; }
.engine-example thead th { white-space: nowrap; }
@media (max-width: 980px) { .concurrency-example__scroll-hint { display: block; } }

/* Case study: the vLLM MTP bug (rv-tools page) */
.case-study { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr); gap: 20px; align-items: start; }
.case-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.case-steps li { padding: 24px 26px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface-1); }
.case-steps span { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; color: var(--red); }
.case-steps h3 { margin: 10px 0 8px; font-size: 1.2rem; color: var(--fg); }
.case-steps p { margin: 0; color: var(--fg-2); line-height: 1.68; }
.case-results { padding: 26px; border: 1px solid var(--red-edge); border-radius: var(--radius-lg); background: linear-gradient(160deg, var(--red-wash), var(--surface-1) 62%); display: flex; flex-direction: column; gap: 18px; }
.case-results h3 { margin: 0; font-size: 1.1rem; color: var(--fg); }
.case-row { display: grid; grid-template-columns: minmax(0, 1fr) auto auto auto; gap: 10px; align-items: baseline; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.case-row span { color: var(--fg-2); font-size: .92rem; line-height: 1.4; }
.case-row b { font-family: var(--font-mono); font-size: 1.05rem; font-weight: 600; white-space: nowrap; }
.case-row b.case-before { color: var(--red); }
.case-row b.case-after { color: var(--green); }
.case-row i { font-style: normal; color: var(--fg-3); }
.case-foot { margin: 0; font-family: var(--font-mono); font-size: .72rem; line-height: 1.5; color: var(--fg-3); }
.case-links { display: flex; flex-wrap: wrap; gap: 14px 28px; margin-top: 26px; }
@media (max-width: 900px) { .case-study { grid-template-columns: 1fr; } }
@media (max-width: 600px) { .case-row { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 10px; } .case-row span { flex-basis: 100%; } }