:root {
  --timeline-font-family: "Roboto", "Open Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --timeline-background: #ffffff;
  --timeline-border: #e5e7eb;
  --timeline-muted: #94a3b8;
  --timeline-primary: #2563eb;
  --timeline-primary-soft: rgba(37, 99, 235, 0.12);
  --timeline-card-bg: #f8fafc;
  --timeline-card-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  --timeline-radius: 16px;
  --timeline-transition: 200ms ease;
}

.timeline-root {
  font-family: var(--timeline-font-family);
  background: var(--timeline-background);
  color: #0f172a;
}

.timeline-root * {
  box-sizing: border-box;
}

.timeline-axis-label {
  font-size: 0.85rem;
  color: var(--timeline-muted);
}

.timeline-card {
  background: var(--timeline-card-bg);
  border-radius: var(--timeline-radius);
  box-shadow: var(--timeline-card-shadow);
  padding: 1.5rem;
  transition: transform var(--timeline-transition), box-shadow var(--timeline-transition);
}

.timeline-card:hover,
.timeline-card:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.12);
}

.timeline-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
}

.timeline-card time {
  display: block;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--timeline-muted);
  margin-bottom: 0.75rem;
}

.timeline-card p {
  margin: 0;
  line-height: 1.6;
  color: #334155;
}

.timeline-card figure {
  margin: 1rem 0 0;
}

.timeline-card img {
  width: 100%;
  border-radius: calc(var(--timeline-radius) - 4px);
  object-fit: cover;
  display: block;
}