.ksef-timeline {
  max-width: 960px;
  margin: 40px 0;
  font-family: "Open Sans", "Segoe UI", Roboto, Arial, sans-serif;
  color: #333;
}

.ksef-timeline h2 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  font-weight: 600;
  color: #1a1a1a;
  text-align: center;
}

.ksef-vertical {
  position: relative;
  margin: 30px 0;
  padding-left: 32px;
}

.ksef-vertical::before {
  content: "";
  position: absolute;
  top: 0;
  left: 16px;
  width: 2px;
  height: 100%;
  background-color: #d1d5db; /* jasny szary */
}

.ksef-event {
  position: relative;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 20px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
}

.ksef-event::before {
  content: "";
  position: absolute;
  top: 20px;
  left: -28px;
  width: 12px;
  height: 12px;
  background-color: #9ca3af; /* neutralny szary */
  border-radius: 50%;
  border: 2px solid #fff;
  box-shadow: 0 0 0 2px #d1d5db;
}

.ksef-event .small-date {
  font-size: 0.85rem;
  font-weight: 600;
  color: #374151;
  margin-bottom: 6px;
  display: block;
}

.ksef-event .title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: #1f2937;
}

.ksef-event .desc {
  font-size: 0.95rem;
  color: #4b5563;
  margin: 0;
  line-height: 1.5;
}

.ksef-subpoints {
  margin-top: 10px;
  padding-left: 1rem;
  border-left: 2px solid #e5e7eb;
}

.ksef-subpoints li {
  margin: 6px 0;
  font-size: 0.93rem;
  color: #4b5563;
}

@media (max-width: 640px) {
  .ksef-vertical {
    padding-left: 24px;
  }
  .ksef-event::before {
    left: -22px;
  }
}