.demo { max-width: 860px; margin: 0 auto; padding: 1rem; }
.subtitle { margin: .5rem 0 1rem; }
.controls { display: flex; gap: 1rem; align-items: center; margin: 1rem 0; flex-wrap: wrap; }
.warn { background: #fff3cd; border: 1px solid #ffe69c; padding: .5rem .75rem; border-radius: 6px; margin: .5rem 0; }

/* Progress legs */
.legs { margin: 1.25rem 0; display: flex; flex-direction: column; gap: .75rem; }
.leg { display: flex; align-items: center; gap: .75rem; flex-wrap: wrap; }
.leg-label { width: 70px; flex-shrink: 0; font-size: .875rem; font-weight: 600; }
.track {
  flex: 1;
  height: 24px;
  background: #e5e7eb;
  border-radius: 12px;
  overflow: hidden;
  min-width: 120px;
}
.fill {
  height: 100%;
  width: 0;
  border-radius: 12px;
  transition: width .3s ease;
}
.fill.h3 { background: var(--ok, #16a34a); }
.fill.h2 { background: var(--warn, #ca8a04); }
.leg-meta { font: 13px/1 monospace; color: #555; min-width: 140px; }

/* Switch banner */
.switch-banner {
  background: #fef3c7;
  border: 1px solid #f59e0b;
  border-radius: 6px;
  padding: .6rem .9rem;
  margin: .75rem 0;
  font-size: .9rem;
}

/* Timeline */
.timeline-wrap { margin: 1.5rem 0; }
.timeline-wrap h2 { font-size: 1rem; margin-bottom: .4rem; }
.timeline {
  list-style: none;
  padding: 0;
  margin: 0;
  font: 13px/1.6 monospace;
  white-space: pre;
  color: #333;
}
.timeline li + li { border-top: 1px solid #f0f0f0; }

/* Caveat */
.caveat { font-size: .8rem; color: #666; margin-top: 1.5rem; line-height: 1.5; }