/* ============================================================
   cases.css — Projects grid, the §3 project card (grid + float),
   Hero floating satellites + HUD, and the case-study screen.
   Datasheet tokens only: 1px hairlines, sharp corners, no shadows,
   grayscale imagery, Space Mono labels / Grotesk titles / Newsreader body.
   ============================================================ */

/* ============================================================
   PROJECTS GRID
   ============================================================ */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ============================================================
   §3 — PROJECT CARD (shared component)
   ============================================================ */
@keyframes pcard-in { from { transform: translateY(12px); opacity: 0; } to { transform: none; opacity: 1; } }

.pcard {
  display: flex;
  flex-direction: column;
  position: relative;
  text-decoration: none;
  border: var(--border-1) solid var(--border-hairline);
  background: var(--bg-surface);
  transition: border-color var(--dur) var(--ease);
}
.pcard--grid { animation: pcard-in 360ms var(--ease) both; }
.pcard:hover { border-color: var(--text-primary); text-decoration: none; }
.pcard:hover .vk-tick { border-color: currentColor; }
/* §1.4/v7 — card-level corner brackets: hidden by default, fade in on hover
   and sit just OUTSIDE the card edges (HUD registration frame), fade out on
   leave. Soft ~180ms, hairline. */
.pcard__bracket { width: 13px; height: 13px; z-index: 3; opacity: 0; transition: opacity 180ms var(--ease), border-color var(--dur) var(--ease); }
.pcard--float:hover .pcard__bracket { opacity: 1; }
@media (prefers-reduced-motion: reduce) {
  .pcard__bracket { transition: none; }
}

.pcard__cover {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--c-ink);
}
.pcard__img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
  filter: grayscale(1);
  transition: filter 240ms var(--ease);
}
.pcard:hover .pcard__img { filter: grayscale(0); }
.pcard__media { opacity: 0; transition: opacity 220ms var(--ease), filter 240ms var(--ease); }
/* Hero (float) plays its mp4 in colour by default (autoplay, not hover). */
.pcard--float .pcard__media { filter: grayscale(0); opacity: 1; }
.pcard__cover--thumb { aspect-ratio: 16 / 7; }

.pcard__body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px 20px 20px;
}
.pcard--grid .pcard__body { border-top: var(--border-1) solid var(--border-hairline); }

.pcard__metaline {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}
.pcard__case {
  font: var(--type-label);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--text-tertiary);
}
.pcard__nda {
  font: var(--type-caption);
  letter-spacing: var(--ls-caption);
  text-transform: uppercase;
  color: var(--text-tertiary);
  border: var(--border-1) solid var(--border-hairline);
  padding: 3px 6px;
  white-space: nowrap;
}
.pcard__title {
  margin: 0;
  font: var(--weight-display) 21px / 1.15 var(--font-display);
  letter-spacing: -0.01em;
  color: var(--text-primary);
}
.pcard:hover .pcard__title { }
.pcard__desc {
  margin: 0;
  font: var(--type-body-sm);
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-secondary);
}
.pcard__open {
  margin-top: 4px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font: var(--type-label);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--link);
}
.pcard__arrow { transition: transform var(--dur) var(--ease); }
.pcard:hover .pcard__open { text-decoration: underline; text-underline-offset: 3px; }
.pcard:hover .pcard__arrow { transform: translateX(3px); }

/* ---- float / satellite variant (compact, translucent) ---- */
.pcard--float {
  width: 250px;
  background: rgba(248, 249, 251, 0.82);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}
.pcard--float .pcard__body { padding: 13px 15px 14px; gap: 7px; }
.pcard--float .pcard__title { font-size: 16px; }
.pcard--float .pcard__desc { font-size: 12.5px; line-height: 1.45; color: var(--text-secondary); }
.pcard--float .pcard__case { font-size: 10px; }

/* ============================================================
   HERO — floating satellites + HUD
   ============================================================ */
.hero__satellites {
  position: absolute;
  inset: 0;
  z-index: 4;
  pointer-events: none;
  transition: opacity var(--dur) var(--ease);
}
.hero__satellites.is-hidden { opacity: 0; pointer-events: none; visibility: hidden; }

.hero__sat {
  position: absolute;
  pointer-events: auto;
  animation: pcard-in 420ms var(--ease) both;
}
/* §1.5 — pushed to the corners so they clear the centred graph's spokes:
   No-Code top-left · Regional LLM right · Research bottom-left. */
.hero__sat--a { top: 1%;  left: 0;   transform: rotate(-1.5deg); animation-delay: 80ms; }
.hero__sat--b { top: 27%; right: 0;  transform: rotate(1.5deg);  animation-delay: 150ms; }
.hero__sat--c { bottom: 2%; left: 0; transform: rotate(-1deg);  animation-delay: 220ms; }
.hero__sat:hover { transform: rotate(0deg); z-index: 5; }

/* Zone D — decorative HUD / telemetry */
.hero__hud {
  position: absolute;
  top: 3%;
  right: 2%;
  z-index: 3;
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: right;
  pointer-events: none;
}
.hero__hud-line {
  font: var(--type-caption);
  letter-spacing: var(--ls-caption);
  text-transform: uppercase;
  color: var(--text-tertiary);
}
.hero__hud-line--dim { color: var(--c-line-strong); }

/* §4 — at rest, the node card panel is hidden (corner freed) but kept in DOM */
.hero__panel--resting {
  opacity: 0 !important;
  pointer-events: none;
  visibility: hidden;
}

@media (prefers-reduced-motion: reduce) {
  .pcard--grid, .hero__sat { animation: none; }
}

/* ============================================================
   CASE STUDY SCREEN
   ============================================================ */
.case { gap: 52px; }

.case__back {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font: var(--type-label);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}
.case__back:hover { color: var(--link); }
.case__back span { transition: transform var(--dur) var(--ease); }
.case__back:hover span { transform: translateX(-3px); }

/* ---- header ---- */
.case__head { display: flex; flex-direction: column; gap: 16px; }
.case__head-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.case__kicker {
  font: var(--type-label);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--text-secondary);
}
.case__plate {
  font: var(--type-label);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--text-tertiary);
  border: var(--border-1) solid var(--border-hairline);
  padding: 5px 9px;
}
.case__title {
  margin: 0;
  font: var(--weight-display) clamp(34px, 5vw, 54px) / 1.04 var(--font-display);
  letter-spacing: -0.02em;
  color: var(--text-primary);
}
.case__tagline {
  margin: 0;
  font: var(--weight-body) 19px / 1.55 var(--font-body);
  font-style: normal;
  color: var(--text-secondary);
  max-width: 720px;
}
.case__specs {
  margin: 8px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 40px;
  padding-top: 18px;
  border-top: var(--border-1) solid var(--border-hairline);
}
.case__spec { display: flex; flex-direction: column; gap: 5px; }
.case__spec dt {
  font: var(--type-caption);
  letter-spacing: var(--ls-caption);
  text-transform: uppercase;
  color: var(--text-tertiary);
}
.case__spec dd {
  margin: 0;
  font: var(--weight-mono) 15px var(--font-mono);
  color: var(--text-primary);
}

.case__blocks { display: flex; flex-direction: column; gap: 52px; }

/* ---- figures ---- */
.cfig { margin: 0; display: flex; flex-direction: column; gap: 8px; }
.cfig__frame {
  position: relative;
  width: 100%;
  border: var(--border-1) solid var(--border-hairline);
  overflow: hidden;
  background: var(--bg-muted);
}
.cfig__frame--dark { background: var(--c-ink); }
.cfig__img {
  display: block;
  width: 100%; height: 100%;
  object-fit: contain;
  object-position: center;
  filter: grayscale(1);
  transition: filter 260ms var(--ease);
}
.cfig:hover .cfig__img { filter: grayscale(0); }
.cfig__img--cover { object-fit: cover; }

/* Projects cards: grayscale by default, color on hover (§2) */
.case-card__img { transition: filter 240ms var(--ease); }
.case-card__media { opacity: 0; transition: opacity 220ms var(--ease), filter 240ms var(--ease); }
.case-card:hover .case-card__img { filter: grayscale(0); }
.case-card__cta {
  margin-top: 4px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font: var(--type-label);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
}
.case-card:hover .case-card__cta { text-decoration: underline; text-underline-offset: 3px; }
.cfig__cap {
  font: var(--type-caption);
  letter-spacing: var(--ls-caption);
  text-transform: uppercase;
  color: var(--text-tertiary);
  text-align: right;
}
.cfigrow { display: grid; gap: 20px; }
.cfigrow--2 { grid-template-columns: repeat(2, 1fr); }
.cfigrow--3 { grid-template-columns: repeat(3, 1fr); }

/* ---- numbered section ---- */
.csec { display: flex; flex-direction: column; }
.csec__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: var(--border-1) solid var(--text-primary);
}
.csec__no { font: var(--type-label); letter-spacing: var(--ls-label); color: var(--link); }
.csec__title {
  font: var(--type-label);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-primary);
}
.csec__grid {
  margin-top: 22px;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  align-items: start;
}
.csec__grid:has(.csec__aside) { grid-template-columns: 1fr 300px; }
.csec__body {
  margin: 0;
  font: var(--type-body);
  color: var(--text-secondary);
  max-width: 640px;
}
.csec:not(:has(.csec__aside)) .csec__grid { grid-template-columns: 1fr; }
.csec__aside {
  margin: 0;
  display: flex;
  flex-direction: column;
  border-top: var(--border-1) solid var(--border-hairline);
}
.csec__aside-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 0;
  border-bottom: var(--border-1) solid var(--border-hairline);
}
.csec__aside-row dt {
  font: var(--type-caption);
  letter-spacing: var(--ls-caption);
  text-transform: uppercase;
  color: var(--text-tertiary);
}
.csec__aside-row dd {
  margin: 0;
  font: var(--weight-mono) 13px var(--font-mono);
  color: var(--text-primary);
  text-align: right;
}

/* ---- problem issue cards ---- */
.cissues { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.cissue {
  border: var(--border-1) solid var(--border-hairline);
  padding: 22px 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--bg-surface);
}
.cissue__label { font: var(--type-label); letter-spacing: var(--ls-label); text-transform: uppercase; color: var(--text-tertiary); }
.cissue__title { margin: 0; font: var(--weight-display) 19px / 1.2 var(--font-display); letter-spacing: -0.01em; color: var(--text-primary); }
.cissue__body { margin: 0; font: var(--type-body-sm); font-size: 14px; line-height: 1.5; color: var(--text-secondary); }

/* ---- findings ---- */
.cfindings { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; }
.cfinding {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 16px 0;
  border-top: var(--border-1) solid var(--border-hairline);
}
.cfinding:last-child { border-bottom: var(--border-1) solid var(--border-hairline); }
.cfinding__tag {
  flex: none;
  font: var(--type-caption);
  letter-spacing: var(--ls-caption);
  text-transform: uppercase;
  color: var(--link);
  border: var(--border-1) solid var(--border-hairline);
  padding: 4px 7px;
}
.cfinding__text { font: var(--type-body); font-size: 17px; color: var(--text-primary); }

/* ---- features ---- */
.cfeatures { display: grid; grid-template-columns: repeat(2, 1fr); gap: 4px 40px; }
.cfeature {
  display: flex;
  gap: 18px;
  padding: 22px 0;
  border-top: var(--border-1) solid var(--border-hairline);
}
.cfeature__no { flex: none; font: var(--weight-display) 22px var(--font-display); color: var(--text-tertiary); min-width: 28px; }
.cfeature__main { display: flex; flex-direction: column; gap: 7px; }
.cfeature__title { margin: 0; font: var(--weight-display) 18px / 1.2 var(--font-display); letter-spacing: -0.01em; color: var(--text-primary); }
.cfeature__body { margin: 0; font: var(--type-body-sm); font-size: 14px; line-height: 1.5; color: var(--text-secondary); }

/* ---- process steps ---- */
.csteps {
  list-style: none; margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--border-hairline);
  border: var(--border-1) solid var(--border-hairline);
}
.cstep { background: var(--bg-surface); padding: 18px 16px 20px; display: flex; flex-direction: column; gap: 8px; }
.cstep__no { font: var(--type-label); letter-spacing: var(--ls-label); color: var(--link); }
.cstep__title { margin: 0; font: var(--weight-display) 16px / 1.2 var(--font-display); letter-spacing: -0.01em; color: var(--text-primary); }
.cstep__body { margin: 0; font: var(--type-body-sm); font-size: 13px; line-height: 1.45; color: var(--text-secondary); }

/* ---- metrics ---- */
.cmetrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border-hairline);
  border: var(--border-1) solid var(--border-hairline);
}
.cmetric { background: var(--bg-surface); padding: 24px 22px 26px; display: flex; flex-direction: column; gap: 10px; }
.cmetric__value { font: var(--weight-mono) clamp(32px, 4vw, 46px) / 1 var(--font-mono); color: var(--text-primary); letter-spacing: -0.01em; }
.cmetric__value--sm { font-size: clamp(22px, 2.4vw, 30px); }
.cmetric__value--pos { color: var(--status-available); }
.cmetric__label { font: var(--type-label); letter-spacing: var(--ls-label); text-transform: uppercase; color: var(--text-tertiary); }
.cmetric__sub { font: var(--type-body-sm); font-size: 13px; line-height: 1.45; color: var(--text-secondary); }

/* ---- metric tree (top-down branching graph) ---- */
.ctree { display: flex; flex-direction: column; align-items: center; }
.ctree__star {
  background: var(--bg-muted);
  border: var(--border-1) solid var(--border-hairline);
  border-top: 2px solid var(--link);
  padding: 18px 26px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
  text-align: center;
  max-width: 520px;
}
.ctree__star-label { font: var(--type-label); letter-spacing: var(--ls-label); text-transform: uppercase; color: var(--link); }
.ctree__star-value { font: var(--weight-display) 19px / 1.25 var(--font-display); letter-spacing: -0.01em; color: var(--text-primary); }
.ctree__trunk { width: 1px; height: 26px; background: var(--border-hairline); }
.ctree__branches {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: stretch;
  gap: 16px;
  width: 100%;
}
/* horizontal connector spanning the 4 branch centres (12.5% .. 87.5%) */
.ctree__branches::before {
  content: "";
  position: absolute;
  top: 0; left: 12.5%; right: 12.5%;
  height: 1px;
  background: var(--border-hairline);
}
.ctree__branch {
  position: relative;
  flex: 1;
  padding-top: 26px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
}
/* vertical connector from the horizontal line down to each node */
.ctree__branch::before {
  content: "";
  position: absolute;
  top: 0; left: 50%;
  width: 1px; height: 26px;
  background: var(--border-hairline);
}
.ctree__node {
  border: var(--border-1) solid var(--border-hairline);
  background: var(--bg-surface);
  padding: 16px 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  min-height: 92px;
}
.ctree__b-label { font: var(--type-caption); letter-spacing: var(--ls-caption); text-transform: uppercase; color: var(--text-tertiary); }
.ctree__b-value { font: var(--weight-display) 15px / 1.25 var(--font-display); color: var(--text-primary); }
.ctree__drop { width: 1px; height: 16px; background: var(--border-hairline); margin: 0 auto; }
.ctree__leaf {
  border: var(--border-1) dashed var(--border-hairline);
  background: var(--bg-muted);
  padding: 11px 13px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.ctree__leaf-tag { font: var(--type-caption); letter-spacing: var(--ls-caption); text-transform: uppercase; color: var(--text-tertiary); }
.ctree__leaf-text { font: var(--weight-mono) 12px / 1.4 var(--font-mono); color: var(--text-secondary); }

/* ---- Evolution / version switcher (Regional LLM §02) ---- */
.cevo { display: flex; flex-direction: column; gap: 0; border: var(--border-1) solid var(--border-hairline); }
.cevo__tabs { display: flex; border-bottom: var(--border-1) solid var(--border-hairline); }
.cevo__tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 3px;
  align-items: flex-start;
  padding: 14px 18px;
  background: var(--bg-muted);
  border: none;
  border-right: var(--border-1) solid var(--border-hairline);
  cursor: pointer;
  text-align: left;
  transition: background-color var(--dur) var(--ease);
}
.cevo__tab:last-child { border-right: none; }
.cevo__tab:hover { background: var(--bg-surface); }
.cevo__tab.is-active { background: var(--bg-surface); box-shadow: inset 0 -2px 0 var(--link); }
.cevo__tab-v { font: var(--weight-display) 18px var(--font-display); letter-spacing: -0.01em; color: var(--text-primary); }
.cevo__tab.is-active .cevo__tab-v { color: var(--link); }
.cevo__tab-y { font: var(--type-caption); letter-spacing: var(--ls-caption); text-transform: uppercase; color: var(--text-tertiary); }

.cevo__body { display: grid; grid-template-columns: 1.5fr 1fr; align-items: stretch; }
.cevo__shot { border-right: var(--border-1) solid var(--border-hairline); min-height: 540px; background: var(--bg-muted); display: flex; overflow: hidden; }
.cevo__img { width: 100%; height: 100%; object-fit: cover; object-position: top center; filter: grayscale(1); transition: filter 280ms var(--ease); }
.cevo__shot:hover .cevo__img { filter: grayscale(0); }
.cevo__slot {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-align: center;
  padding: 24px;
  background-image:
    linear-gradient(var(--c-line-faint) 1px, transparent 1px),
    linear-gradient(90deg, var(--c-line-faint) 1px, transparent 1px);
  background-size: var(--space-6) var(--space-6);
}
.cevo__slot-name { font: var(--weight-display) 18px var(--font-display); letter-spacing: -0.01em; color: var(--text-secondary); white-space: nowrap; }
.cevo__slot-ver { font: var(--weight-mono) 11px var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-tertiary); text-align: center; }
.cevo__slot-tag { margin-top: 6px; font: var(--type-caption); letter-spacing: var(--ls-caption); text-transform: uppercase; color: var(--text-tertiary); border: var(--border-1) solid var(--border-hairline); padding: 4px 8px; }

.cevo__panel { padding: 24px 24px 26px; display: flex; flex-direction: column; gap: 18px; }
.cevo__ptitle { margin: 0; font: var(--weight-display) 24px var(--font-display); letter-spacing: -0.01em; color: var(--text-primary); }
.cevo__desc { margin: 0; font: var(--type-body); color: var(--text-secondary); max-width: 46ch; }
.cevo__phead { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-bottom: 14px; border-bottom: var(--border-1) solid var(--border-hairline); }
.cevo__codename { font: var(--weight-display) 20px var(--font-display); letter-spacing: -0.01em; color: var(--text-primary); }
.cevo__status { font: var(--type-caption); letter-spacing: var(--ls-caption); text-transform: uppercase; padding: 4px 8px; border: var(--border-1) solid var(--border-hairline); color: var(--text-tertiary); }
.cevo__status--current { color: var(--link); border-color: var(--link); }
.cevo__spec { display: flex; flex-direction: column; gap: 7px; }
.cevo__spec--inline { flex-direction: row; align-items: baseline; gap: 14px; }
.cevo__spec-k { font: var(--type-caption); letter-spacing: var(--ls-caption); text-transform: uppercase; color: var(--text-tertiary); }
.cevo__spec-v { font: var(--type-body-sm); font-size: 14px; color: var(--text-secondary); }
.cevo__list { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 6px; }
.cevo__list li { font: var(--type-body); font-size: 15px; line-height: 1.45; color: var(--text-secondary); padding-left: 22px; position: relative; }
.cevo__list--pos li::before { content: "\2192"; position: absolute; left: 0; color: var(--link); }
.cevo__list--neg li { color: var(--text-tertiary); padding-left: 16px; }
.cevo__list--neg li::before { content: "\2013"; position: absolute; left: 0; color: var(--text-tertiary); }
.cevo__rows { display: flex; flex-direction: column; margin-top: 2px; }
.cevo__row { display: grid; grid-template-columns: 96px 1fr; align-items: baseline; gap: 16px; padding: 14px 0; border-top: var(--border-1) solid var(--border-hairline); }
.cevo__row .cevo__spec-k { padding-top: 2px; }
.cevo__row-v { font: var(--type-body); color: var(--text-primary); }
.cevo__row-v--current { color: var(--link); }

/* ---- approach timeline ---- */
.ctimeline { display: flex; flex-direction: column; gap: 28px; }
.ctimeline__row {
  list-style: none; margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border-hairline);
  border: var(--border-1) solid var(--border-hairline);
}
.ctimeline__item {
  background: var(--bg-surface);
  padding: 18px 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-top: 2px solid var(--border-hairline);
}
.ctimeline__item:last-child { border-top: 2px solid var(--link); }
.ctimeline__v { font: var(--weight-mono) 13px var(--font-mono); letter-spacing: 0.08em; color: var(--text-tertiary); }
.ctimeline__name { font: var(--weight-display) 18px var(--font-display); letter-spacing: -0.01em; color: var(--text-primary); }
.ctimeline__year { font: var(--type-label); letter-spacing: var(--ls-label); color: var(--link); }
.ctimeline__quote {
  margin: 0;
  font: var(--weight-body-light) 22px / 1.4 var(--font-body);
  font-style: italic;
  color: var(--text-primary);
  max-width: 640px;
}

/* ---- benchmarks (redacted) ---- */
.cbench { display: flex; flex-direction: column; }
.cbench__row {
  display: grid;
  grid-template-columns: 200px 1fr 80px;
  align-items: center;
  gap: 20px;
  padding: 14px 0;
  border-top: var(--border-1) solid var(--border-hairline);
}
.cbench__row:last-child { border-bottom: var(--border-1) solid var(--border-hairline); }
.cbench__label { font: var(--weight-mono) 13px var(--font-mono); text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-primary); }
.cbench__bar { height: 6px; background: var(--bg-muted); border: var(--border-1) solid var(--border-hairline); position: relative; }
.cbench__fill { position: absolute; inset: 0; right: 62%; background: repeating-linear-gradient(90deg, var(--c-line-strong) 0 4px, transparent 4px 8px); }
.cbench__val { font: var(--weight-mono) 13px var(--font-mono); color: var(--text-tertiary); text-align: right; letter-spacing: 0.04em; }

/* ---- footer nav ---- */
.case__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 28px;
  border-top: var(--border-1) solid var(--border-hairline);
}
.case__next { text-align: right; text-decoration: none; display: flex; flex-direction: column; gap: 5px; }
.case__next-label { font: var(--type-label); letter-spacing: var(--ls-label); text-transform: uppercase; color: var(--text-tertiary); }
.case__next-title { font: var(--weight-display) 20px / 1.2 var(--font-display); letter-spacing: -0.01em; color: var(--text-primary); transition: color var(--dur) var(--ease); }
.case__next:hover .case__next-title { color: var(--link); }

/* ============================================================
   COMPOSITE CASE — No-Code Agent Builder (5 tab subpages)
   ============================================================ */
.csec__marker {
  margin-left: auto;
  font: var(--type-caption);
  letter-spacing: var(--ls-caption);
  text-transform: uppercase;
  color: var(--link);
  border: var(--border-1) solid var(--link);
  padding: 3px 8px;
  white-space: nowrap;
}

/* ---- tab nav ---- */
.case--composite { gap: 0; }
.case--composite .case__head { margin-bottom: 0; }
.ctabs {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 26px;
  margin: 28px 0 8px;
  padding-bottom: 0;
  border-bottom: var(--border-1) solid var(--border-hairline);
}
.ctab {
  font: var(--type-label);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--text-tertiary);
  text-decoration: none;
  padding: 12px 2px;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.ctab:hover { color: var(--text-primary); }
.ctab.is-active { color: var(--link); border-bottom-color: var(--link); }
.case--composite .case__blocks { margin-top: 44px; }

/* ---- tab sub-hero ---- */
.ctabhero { display: grid; grid-template-columns: 1fr; gap: 28px; }
.ctabhero:has(.cfig) { grid-template-columns: 1.05fr 0.95fr; align-items: start; }
.ctabhero__text { display: flex; flex-direction: column; gap: 18px; align-items: flex-start; }
.ctabhero__title {
  margin: 0;
  font: var(--weight-display) clamp(26px, 3.2vw, 38px) / 1.1 var(--font-display);
  letter-spacing: -0.02em;
  color: var(--text-primary);
  text-wrap: balance;
}
.ctabhero__lead {
  margin: 0;
  font: var(--weight-body) 18px / 1.55 var(--font-body);
  color: var(--text-secondary);
  max-width: 560px;
}
.ctabhero__marker {
  font: var(--type-caption);
  letter-spacing: var(--ls-caption);
  text-transform: uppercase;
  color: var(--link);
  border: var(--border-1) solid var(--link);
  padding: 4px 9px;
}

/* ---- stat chips ---- */
.cstats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--border-hairline); border: var(--border-1) solid var(--border-hairline); }
.cstat { background: var(--bg-surface); padding: 16px 18px; display: flex; flex-direction: column; gap: 4px; }
.cstat__v { font: var(--weight-mono) 22px var(--font-mono); letter-spacing: -0.01em; color: var(--text-primary); }
.cstat__l { font: var(--type-caption); letter-spacing: var(--ls-caption); text-transform: uppercase; color: var(--text-tertiary); }

/* ---- big numbers (scale) ---- */
.cbignums { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; padding: 8px 0; }
.cbignum { display: flex; flex-direction: column; gap: 8px; }
.cbignum__v { font: var(--weight-mono) clamp(40px, 5vw, 64px) / 0.95 var(--font-mono); letter-spacing: -0.02em; color: var(--text-primary); }
.cbignum__l { font: var(--type-label); letter-spacing: var(--ls-label); text-transform: uppercase; color: var(--link); }
.cbignum__s { font: var(--type-body-sm); font-size: 13px; line-height: 1.45; color: var(--text-secondary); }

/* ---- index (links to tabs) ---- */
.cindex { list-style: none; margin: 22px 0 0; padding: 0; }
.cindex__row {
  display: grid;
  grid-template-columns: 160px 1fr auto;
  align-items: baseline;
  gap: 24px;
  padding: 18px 4px;
  border-top: var(--border-1) solid var(--border-hairline);
  text-decoration: none;
  transition: background-color var(--dur) var(--ease);
}
.cindex li:last-child .cindex__row { border-bottom: var(--border-1) solid var(--border-hairline); }
.cindex__row:hover { background: var(--bg-muted); }
.cindex__label { font: var(--type-label); letter-spacing: var(--ls-label); text-transform: uppercase; color: var(--text-primary); }
.cindex__desc { font: var(--weight-body) 16px / 1.45 var(--font-body); color: var(--text-secondary); }
.cindex__arrow { color: var(--link); display: inline-flex; transition: transform var(--dur) var(--ease); }
.cindex__row:hover .cindex__arrow { transform: translateX(3px); }

/* ---- surfaces grid ---- */
.csurfaces { margin-top: 22px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--border-hairline); border: var(--border-1) solid var(--border-hairline); }
.csurface { background: var(--bg-surface); padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 8px; }
.csurface__l { font: var(--type-label); letter-spacing: var(--ls-label); text-transform: uppercase; color: var(--link); }
.csurface__d { margin: 0; font: var(--type-body-sm); font-size: 14px; line-height: 1.5; color: var(--text-secondary); }

/* ---- systems (before) ---- */
.csystems { margin-top: 22px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.csystem { border: var(--border-1) solid var(--border-hairline); background: var(--bg-surface); padding: 20px; display: flex; flex-direction: column; gap: 10px; }
.csystem__label { font: var(--type-caption); letter-spacing: var(--ls-caption); text-transform: uppercase; color: var(--text-tertiary); }
.csystem__title { margin: 0; font: var(--weight-display) 18px / 1.2 var(--font-display); letter-spacing: -0.01em; color: var(--text-primary); }
.csystem__body { margin: 0; font: var(--type-body-sm); font-size: 13px; line-height: 1.45; color: var(--text-secondary); }

/* ---- unification scale ---- */
.cunify { margin-top: 22px; display: flex; flex-direction: column; gap: 14px; }
.cunify__head { margin: 0; font: var(--weight-display) 22px / 1.2 var(--font-display); letter-spacing: -0.01em; color: var(--text-primary); }
.cunify__scale { display: flex; gap: 1px; background: var(--border-hairline); border: var(--border-1) solid var(--border-hairline); }
.cunify__zone { background: var(--bg-muted); padding: 14px 12px; display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.cunify__zone-tag { font: var(--weight-mono) 14px var(--font-mono); color: var(--link); }
.cunify__zone-name { font: var(--type-caption); letter-spacing: var(--ls-caption); text-transform: uppercase; color: var(--text-tertiary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cunify__axis { display: flex; justify-content: space-between; font: var(--weight-mono) 11px var(--font-mono); letter-spacing: 0.06em; color: var(--text-tertiary); }
.cunify__arrow { text-align: center; color: var(--link); font-size: 22px; line-height: 1; }
.cunify__unified { border: var(--border-1) solid var(--border-hairline); border-top: 2px solid var(--link); background: var(--bg-surface); padding: 20px; display: flex; flex-direction: column; gap: 10px; align-items: center; text-align: center; }
.cunify__u-title { font: var(--weight-mono) 14px var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-primary); }
.cunify__u-specs { display: flex; gap: 18px; flex-wrap: wrap; justify-content: center; }
.cunify__u-spec { font: var(--type-caption); letter-spacing: var(--ls-caption); text-transform: uppercase; color: var(--text-secondary); }

/* ---- big metric tree (graph, not table) ---- */
.cbtree { margin-top: 22px; display: flex; flex-direction: column; align-items: center; }
.cbtree__star {
  background: var(--bg-muted);
  border: var(--border-1) solid var(--border-hairline);
  border-top: 2px solid var(--link);
  padding: 18px 26px;
  display: flex; flex-direction: column; gap: 6px;
  align-items: center; text-align: center;
  max-width: 560px;
}
.cbtree__star-label { font: var(--type-label); letter-spacing: var(--ls-label); text-transform: uppercase; color: var(--link); }
.cbtree__star-value { font: var(--weight-display) 18px / 1.3 var(--font-display); letter-spacing: -0.01em; color: var(--text-primary); }
.cbtree__trunk { width: 1px; height: 26px; background: var(--border-hairline); }
.cbtree__branches {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  width: 100%;
}
.cbtree__branches::before { content: ""; position: absolute; top: 0; left: 10%; right: 10%; height: 1px; background: var(--border-hairline); }
.cbtree__branch { position: relative; padding-top: 26px; display: flex; flex-direction: column; gap: 10px; }
.cbtree__branch::before { content: ""; position: absolute; top: 0; left: 50%; width: 1px; height: 26px; background: var(--border-hairline); }
.cbtree__node { border: var(--border-1) solid var(--border-hairline); border-top: 2px solid var(--link); background: var(--bg-surface); padding: 12px 12px 14px; display: flex; flex-direction: column; gap: 4px; }
.cbtree__b-tag { font: var(--weight-mono) 12px var(--font-mono); color: var(--link); }
.cbtree__b-label { font: var(--weight-display) 14px / 1.2 var(--font-display); letter-spacing: -0.01em; color: var(--text-primary); }
.cbtree__leaves { position: relative; list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.cbtree__leaf { border: var(--border-1) dashed var(--border-hairline); background: var(--bg-muted); padding: 8px 10px; display: flex; flex-direction: column; gap: 2px; }
.cbtree__leaf-id { font: var(--weight-mono) 10px var(--font-mono); letter-spacing: 0.06em; color: var(--text-tertiary); }
.cbtree__leaf-text { font: var(--weight-mono) 12px / 1.35 var(--font-mono); color: var(--text-secondary); }

/* ---- closing ---- */
.cclosing { margin-top: 22px; display: flex; flex-direction: column; gap: 28px; }
.cclosing__specs { margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--border-hairline); border: var(--border-1) solid var(--border-hairline); }
.cclosing__row { background: var(--bg-surface); padding: 20px; display: flex; flex-direction: column; gap: 8px; }
.cclosing__row dt { font: var(--type-caption); letter-spacing: var(--ls-caption); text-transform: uppercase; color: var(--text-tertiary); }
.cclosing__row dd { margin: 0; font: var(--weight-mono) 14px / 1.4 var(--font-mono); color: var(--text-primary); }
.cclosing__quote { margin: 0; font: var(--weight-body-light) 24px / 1.4 var(--font-body); font-style: italic; color: var(--text-primary); max-width: 640px; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .projects__grid { grid-template-columns: repeat(2, 1fr); }
  .ctabhero:has(.cfig) { grid-template-columns: 1fr; }
  .cstats { grid-template-columns: repeat(2, 1fr); }
  .cbignums { grid-template-columns: 1fr; gap: 22px; }
  .csurfaces { grid-template-columns: 1fr; }
  .csystems { grid-template-columns: repeat(2, 1fr); }
  .cbtree__branches { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .cbtree__branches::before { display: none; }
  .cbtree__branch::before { display: none; }
  .cbtree__branch { padding-top: 0; }
  .cclosing__specs { grid-template-columns: repeat(2, 1fr); }
  .hero__satellites, .hero__hud { display: none; }
  .csec__grid, .csec__grid:has(.csec__aside) { grid-template-columns: 1fr; gap: 24px; }
  .cfeatures { grid-template-columns: 1fr; }
  .cissues { grid-template-columns: 1fr; }
  .csteps { grid-template-columns: repeat(2, 1fr); }
  .cmetrics { grid-template-columns: repeat(2, 1fr); }
  .cfigrow--3 { grid-template-columns: 1fr 1fr; }
  .cbench__row { grid-template-columns: 130px 1fr 70px; gap: 14px; }
  /* evolution + metric tree stack */
  .cevo__body { grid-template-columns: 1fr; }
  .cevo__shot { border-right: none; border-bottom: var(--border-1) solid var(--border-hairline); min-height: 220px; }
  .ctree__branches { flex-direction: column; gap: 12px; }
  .ctree__branches::before { display: none; }
  .ctree__branch { padding-top: 12px; }
  .ctree__branch::before { display: none; }
  .ctree__trunk { height: 16px; }
  .ctimeline__row { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .projects__grid { grid-template-columns: 1fr; }
  .cstats { grid-template-columns: 1fr; }
  .csystems { grid-template-columns: 1fr; }
  .cbtree__branches { grid-template-columns: 1fr; }
  .cclosing__specs { grid-template-columns: 1fr; }
  .cindex__row { grid-template-columns: 1fr; gap: 6px; }
  .ctabs { gap: 2px 16px; }
  .case__head-top { flex-direction: column; align-items: flex-start; gap: 10px; }
  .cfigrow--2, .cfigrow--3 { grid-template-columns: 1fr; }
  .csteps, .cmetrics { grid-template-columns: 1fr; }
  .ctimeline__row { grid-template-columns: 1fr; }
  .cevo__tab { padding: 11px 12px; }
  .cevo__tab-v { font-size: 16px; }
  /* v7 2.1/2.4 — label-left/value-right meta block stacks vertically on phones:
     label on top, value below, left-aligned, full width (no clipping). */
  .csec__aside-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
  .csec__aside-row dd { text-align: left; }
  /* v7 2.5 — keep Back (left) and Next (right) on one row, pushed to the edges. */
  .case__foot { flex-direction: row; flex-wrap: wrap; align-items: flex-start; justify-content: space-between; gap: 18px 16px; }
  .case__next { text-align: right; margin-left: auto; }
  .case__next-title { font-size: 17px; }
}