/* ---------- Pasos dentro de cada etapa: una cosa por vez ---------- */
.substeps { flex: none; display: flex; gap: 6px; padding: 10px 28px 0; overflow-x: auto; scrollbar-width: none; }
.substeps::-webkit-scrollbar { display: none; }
.subtab { flex: none; display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px 6px 6px; border-radius: 999px; border: 1px solid var(--line); background: transparent; color: var(--muted); font-weight: 650; font-size: 13px; white-space: nowrap; transition: color var(--d2) var(--ease), background-color var(--d2) var(--ease), border-color var(--d2) var(--ease); }
.subtab-num { display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; font: 600 10.5px/1 var(--mono); border: 1px solid var(--line-2); transition: background-color var(--d2) var(--ease), color var(--d2) var(--ease); }
.subtab:hover { color: var(--strong); border-color: var(--line-2); }
.subtab.is-active { color: var(--strong); background: color-mix(in srgb, var(--sky) 11%, transparent); border-color: color-mix(in srgb, var(--sky) 42%, transparent); }
.subtab.is-active .subtab-num { background: var(--btn-bg); color: var(--btn-ink); border-color: transparent; }
.subtab.is-done .subtab-num { color: var(--live); border-color: color-mix(in srgb, var(--mint) 45%, transparent); background: color-mix(in srgb, var(--mint) 10%, transparent); }
.subtab-badge { min-width: 18px; padding: 1px 6px; border-radius: 999px; font: 600 10.5px/1.5 var(--mono); text-align: center; background: var(--line); color: var(--strong); }
.substeps-bar { flex: none; height: 2px; margin: 8px 28px 0; border-radius: 2px; background: var(--line); overflow: hidden; }
.substeps-bar i { display: block; height: 100%; transform-origin: left center; transform: scaleX(.2); background: linear-gradient(90deg, var(--sky), var(--mint)); transition: transform var(--d3) var(--ease); }
.sub-panel { display: grid; gap: 14px; align-content: start; }
.sub-panel[hidden] { display: none; }
.sub-intro { display: flex; align-items: flex-start; gap: 12px; padding: 10px 14px; border-radius: 14px; background: var(--hair); border: 1px solid var(--line); }
.sub-intro i { flex: none; color: var(--accent); margin-top: 3px; font-size: 14px; }
.sub-intro p { margin: 0; font-size: 13.5px; line-height: 1.55; color: var(--text); }
.sub-tools { display: flex; justify-content: flex-end; margin: -4px 0 0; }
.sub-list { display: grid; gap: 10px; min-width: 0; }
@media (max-width: 760px) {
  .substeps { padding-inline: 16px; }
  .substeps-bar { margin-inline: 16px; }
}
.sub-list .context-summary { display: none; }
.sub-intro { padding: 8px 12px; }
.sub-intro p { font-size: 13px; line-height: 1.5; }
.sub-tools { margin: -6px 0 0; }