/* About / FAQ (about.html) */
.about-shell {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: var(--space-8) var(--space-6) var(--space-12);
  display: flex; flex-direction: column; gap: var(--space-8);
}
.faq-list { display: flex; flex-direction: column; gap: var(--space-3); }
.faq-item {
  padding: 0;
  overflow: hidden;
}
.faq-item summary {
  list-style: none;
  padding: var(--space-4) var(--space-5);
  cursor: pointer;
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-3);
  font-weight: 600;
  font-size: var(--fz-15);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 22px; color: var(--accent);
  font-family: var(--font-mono);
  transition: transform var(--dur-2);
  width: 22px; text-align: center;
}
.faq-item[open] summary::after { content: "×"; }
.faq-item__body {
  padding: 0 var(--space-5) var(--space-5);
  color: var(--ink-mute);
  line-height: 1.75;
  font-size: var(--fz-14);
}

.about-models {
  scroll-margin-top: 112px;
  outline: none;
}
.about-models:target {
  animation: aboutTargetPulse 1.6s ease;
}
@keyframes aboutTargetPulse {
  0% { filter: drop-shadow(0 0 0 rgba(31, 58, 138, 0)); }
  35% { filter: drop-shadow(0 10px 24px rgba(31, 58, 138, 0.16)); }
  100% { filter: drop-shadow(0 0 0 rgba(31, 58, 138, 0)); }
}

.model-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
.model-grid__loading,
.model-grid__error {
  grid-column: 1 / -1;
  text-align: center;
  padding: 32px;
  color: var(--ink-mute);
}

.model-card {
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-color: color-mix(in srgb, var(--coach-color, var(--accent)) 28%, var(--line));
}
.model-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.model-card__persona {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--ink-strong);
}
.model-card__tier {
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 999px;
  color: color-mix(in srgb, var(--coach-color, var(--accent)) 70%, #0f172a);
  background: color-mix(in srgb, var(--coach-color, var(--accent)) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--coach-color, var(--accent)) 24%, transparent);
}
.model-card__identity {
  margin: 0;
  font-size: 13px;
  color: color-mix(in srgb, var(--coach-color, var(--accent)) 75%, var(--ink));
  font-weight: 500;
}
.model-card__radar {
  width: 100%;
  max-width: 196px;
  margin: 0 auto 2px;
  color: var(--coach-color, var(--accent));
}
.model-card__radar svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}
.model-card__radar-grid polygon,
.model-card__radar-grid line {
  fill: none;
  stroke: color-mix(in srgb, var(--coach-color, var(--accent)) 22%, var(--line));
  stroke-width: 1;
}
.model-card__radar-area {
  fill: color-mix(in srgb, var(--coach-color, var(--accent)) 18%, transparent);
  stroke: none;
}
.model-card__radar-line {
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linejoin: round;
}
.model-card__radar-dots circle {
  fill: var(--bg-elev);
  stroke: currentColor;
  stroke-width: 2;
}
.model-card__radar-labels text {
  fill: var(--ink-mute);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0;
}

.model-card__attrs {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 6px 12px;
  margin: 0;
  font-size: 13px;
}
.model-card__attrs dt {
  color: var(--ink-mute);
  font-weight: 500;
}
.model-card__attrs dd {
  margin: 0;
  color: var(--ink-soft);
}
.model-card__quote {
  margin: 0;
  padding: 10px 14px;
  border-left: 3px solid var(--coach-color, var(--accent));
  background: color-mix(in srgb, var(--coach-color, var(--accent)) 6%, transparent);
  font-size: 13px;
  font-style: italic;
  color: var(--ink-soft);
  border-radius: 4px;
}

:root[data-theme="dark"] .model-card__tier {
  color: #f8fafc;
  background: color-mix(in srgb, var(--coach-color, var(--accent)) 20%, transparent);
  border-color: color-mix(in srgb, var(--coach-color, var(--accent)) 34%, transparent);
}
:root[data-theme="dark"] .model-card__radar-dots circle {
  fill: var(--bg-elev);
}

/* V-TMF prototype scenes replacing static about SVG shots. */
.vtmf-stage {
  position: relative;
  width: 100%;
  min-height: 100%;
  overflow: hidden;
  background: var(--bg-soft);
  isolation: isolate;
}
.vtmf-stage__canvas {
  display: block;
  width: 100%;
  height: auto;
}
.vtmf-stage--shot {
  aspect-ratio: 16 / 9;
}
.vtmf-stage--wide {
  aspect-ratio: 16 / 9;
}
.vtmf-stage__inspector {
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: calc(100% - 20px);
  padding: 6px 9px;
  border: 1px solid rgba(15, 23, 42, 0.1);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.74);
  backdrop-filter: blur(10px) saturate(140%);
  -webkit-backdrop-filter: blur(10px) saturate(140%);
  color: #334155;
  font-size: 11px;
  line-height: 1.25;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity var(--dur-2), transform var(--dur-2);
  pointer-events: none;
}
.vtmf-stage:hover .vtmf-stage__inspector,
.vtmf-stage:focus-within .vtmf-stage__inspector {
  opacity: 1;
  transform: translateY(0);
}
.vtmf-stage__inspector span {
  flex: 0 0 auto;
  padding: 3px 7px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.1);
  color: #1d4ed8;
  font-weight: 800;
  white-space: nowrap;
}
.vtmf-stage__inspector strong {
  min-width: 0;
  overflow: hidden;
  color: #334155;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.vtmf-stage--error {
  display: grid;
  min-height: 180px;
  place-items: center;
  padding: 20px;
  color: var(--ink-mute);
  font-size: var(--fz-14);
  text-align: center;
}
:root[data-theme="dark"] .vtmf-stage__inspector {
  border-color: rgba(255, 255, 255, 0.1);
  background: rgba(15, 23, 42, 0.76);
  color: #cbd5e1;
}
:root[data-theme="dark"] .vtmf-stage__inspector span {
  background: rgba(96, 165, 250, 0.18);
  color: #bfdbfe;
}
:root[data-theme="dark"] .vtmf-stage__inspector strong {
  color: #e2e8f0;
}

@media (max-width: 560px) {
  .vtmf-stage__inspector {
    left: 8px;
    right: 8px;
    bottom: 8px;
    padding: 5px 7px;
    font-size: 10px;
  }
  .vtmf-stage__inspector span {
    display: none;
  }
}