/* ============================================================
 * BioQuest — 倒计时横幅高级样式
 * ============================================================ */

.countdown-banner {
  background: linear-gradient(180deg, #0c1810 0%, #1a2f1d 100%);
  padding: 48px 0;
  border-top: 1px solid rgba(196, 149, 106, 0.12);
  border-bottom: 1px solid rgba(196, 149, 106, 0.12);
}

.countdown-inner {
  max-width: 700px;
  margin: 0 auto;
  padding: 0 var(--content-padding);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

.countdown-head {
  text-align: center;
}

.countdown-label {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.countdown-date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--marigold);
  letter-spacing: 0.08em;
  opacity: 0.8;
}

.countdown-digits {
  display: flex;
  gap: 28px;
  align-items: center;
}

.countdown-unit {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.countdown-num {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  color: #fff;
  min-width: 72px;
  line-height: 1;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 16px 12px;
  transition: border-color 0.3s ease;
}

.countdown-unit:hover .countdown-num {
  border-color: rgba(196, 149, 106, 0.4);
}

.countdown-unit-label {
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.35);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.countdown-sep {
  color: rgba(196, 149, 106, 0.4);
  flex-shrink: 0;
  margin-top: -20px;
}

@media (max-width: 768px) {
  .countdown-banner {
    padding: 36px 0;
  }

  .countdown-digits {
    gap: 16px;
  }

  .countdown-num {
    min-width: 56px;
    padding: 12px 8px;
    font-size: 1.6rem;
  }
}