.faq .panel__head {
  text-align: center;
  margin-bottom: var(--space-8);
}

/* Layout estable: 2 columnas independientes (8 + 7) en desktop.
   Cada .faq__col es un track propio — expandir un item no rebalancea
   posiciones entre columnas. Mobile: un solo flujo vertical. */
.faq__list {
  display: flex;
  flex-direction: column;
}

.faq__col {
  display: block;
}

.faq__item {
  border-bottom: 1px solid var(--border-subtle);
  padding: 0;
  margin: 0;
  display: block;
}

/* Mobile: solo el primer item del primer col lleva border-top
   (evita doble línea en el junction entre col 1 y col 2 cuando se apilan). */
.faq__col:first-child .faq__item:first-child {
  border-top: 1px solid var(--border-subtle);
}

/* Native <summary> reset + custom layout */
.faq__q {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-5);
  padding: var(--space-5) 0;
  font-size: var(--text-base);
  font-weight: var(--weight-bold);
  line-height: var(--lh-snug);
  color: var(--text-primary);
  letter-spacing: 0;
  user-select: none;
  transition: color var(--duration-base) var(--ease-out);
}

.faq__q::-webkit-details-marker { display: none; }
.faq__q::marker { content: ""; display: none; }

.faq__q:hover,
.faq__item[open] > .faq__q {
  color: var(--color-accent-hover);
}

/* Custom + / × icon */
.faq__icon {
  position: relative;
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  margin-top: 4px;
  color: var(--text-muted);
  transition: color var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out);
}

.faq__icon::before,
.faq__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: currentColor;
  transition: transform var(--duration-base) var(--ease-out), opacity var(--duration-base) var(--ease-out);
}

.faq__icon::before {
  width: 14px;
  height: 1.5px;
  transform: translate(-50%, -50%);
}

.faq__icon::after {
  width: 1.5px;
  height: 14px;
  transform: translate(-50%, -50%);
}

.faq__item[open] .faq__icon {
  color: var(--color-accent);
}

.faq__item[open] .faq__icon::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

/* Answer body */
.faq__a {
  padding: 0 0 var(--space-5) 0;
  color: var(--text-secondary);
  font-size: var(--text-base);
  line-height: var(--lh-normal);
  max-width: 64ch;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.faq__a p {
  margin: 0;
}

.faq__link {
  color: var(--text-primary);
  font-weight: var(--weight-bold);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
  transition: color var(--duration-base) var(--ease-out);
}

.faq__link:hover {
  color: var(--color-accent-hover);
}

/* Smooth open animation via details-content (Chromium) — fallback ignored gracefully */
@supports (interpolate-size: allow-keywords) {
  .faq__item::details-content {
    block-size: 0;
    overflow: clip;
    transition: block-size var(--duration-base) var(--ease-out), content-visibility var(--duration-base) var(--ease-out) allow-discrete;
  }
  .faq__item[open]::details-content {
    block-size: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .faq__icon,
  .faq__icon::before,
  .faq__icon::after,
  .faq__q {
    transition: none;
  }
}

/* Tablet ≥ 768px */
@media (min-width: 768px) {
  .faq__q {
    font-size: var(--text-md);
    padding: var(--space-5) 0;
    gap: var(--space-6);
  }

  .faq__icon {
    margin-top: 6px;
  }
}

/* Desktop ≥ 1024px — 2 columnas independientes via grid (8 + 7 fijo). */
@media (min-width: 1024px) {
  .faq__list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: var(--space-8);
    align-items: start; /* cada col fluye independiente, sin stretch */
  }

  /* En desktop ambas columnas llevan border-top en su primer item */
  .faq__col .faq__item:first-child {
    border-top: 1px solid var(--border-subtle);
  }
}