.sec-countdown {
  --sec-bg: #3a3f4b;
  --sec-bg-inner: #4b5160;
  --sec-accent: #f8db01;
  --sec-accent-muted: rgba(248, 219, 1, 0.28);
  --sec-text: #ffffff;
  --sec-button: #ffffff;
  --sec-button-text: #4b5160;
  background: radial-gradient(circle at top, #4a5160 0%, var(--sec-bg) 60%);
  border-radius: 22px;
  padding: 48px 24px;
  color: var(--sec-text);
  text-align: center;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.16);
}

.sec-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.sec-title {
  margin: 0 0 36px;
  color: var(--sec-accent);
  font-size: clamp(2rem, 4vw, 4.25rem);
  line-height: 1.06;
  font-weight: 700;
}

.sec-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(150px, 1fr));
  gap: 24px;
  align-items: center;
  justify-items: center;
  max-width: 950px;
  margin: 0 auto 28px;
}

.sec-unit {
  --progress: 0%;
  position: relative;
  width: clamp(150px, 18vw, 220px);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: conic-gradient(var(--sec-accent) var(--progress), var(--sec-accent-muted) 0);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
}

.sec-unit-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  box-shadow: 0 0 18px rgba(255, 31, 61, 0.22);
}

.sec-unit-inner {
  position: relative;
  width: calc(100% - 16px);
  height: calc(100% - 16px);
  border-radius: 50%;
  background: var(--sec-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.sec-value {
  font-size: clamp(2rem, 3vw, 3.5rem);
  font-weight: 700;
  line-height: 1;
  color: var(--sec-accent);
}

.sec-label {
  margin-top: 8px;
  font-size: clamp(0.95rem, 1.2vw, 1.35rem);
  color: var(--sec-accent);
}

.sec-note {
  margin: 18px auto 20px;
  font-size: clamp(1rem, 1.25vw, 1.35rem);
  line-height: 1.5;
  color: #f6f8fb;
  text-shadow: 0 1px 8px rgba(0,0,0,0.18);
  text-align: center;
}

.sec-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.sec-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 180px;
  padding: 14px 24px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  border: 2px solid #d9dce3;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.sec-button:hover {
  transform: translateY(-1px);
  opacity: 0.96;
}

.sec-button-primary {
  background: var(--sec-button);
  color: var(--sec-button-text);
}

.sec-empty {
  padding: 16px;
  border: 1px solid #ddd;
  background: #fff;
}

@media (max-width: 900px) {
  .sec-grid {
    grid-template-columns: repeat(2, minmax(140px, 1fr));
  }
}

@media (max-width: 540px) {
  .sec-countdown {
    padding: 32px 18px;
    border-radius: 16px;
  }

  .sec-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .sec-unit {
    width: min(42vw, 170px);
  }
}

.sec-countdown-minimal {
  background: transparent;
  box-shadow: none;
  padding: 0;
  border-radius: 0;
}

.sec-countdown-minimal .sec-inner {
  max-width: none;
}

.sec-countdown-minimal .sec-grid {
  margin: 0 auto;
  max-width: 760px;
  gap: 14px;
}

.sec-countdown-minimal .sec-unit {
  width: clamp(90px, 11vw, 130px);
  padding: 4px;
}

.sec-countdown-minimal .sec-unit-inner {
  width: calc(100% - 10px);
  height: calc(100% - 10px);
}

.sec-countdown-minimal .sec-value {
  font-size: clamp(1.3rem, 2vw, 2.2rem);
}

.sec-countdown-minimal .sec-label {
  margin-top: 4px;
  font-size: clamp(0.75rem, 0.95vw, 1rem);
}

@media (max-width: 540px) {
  .sec-countdown-minimal .sec-grid {
    gap: 10px;
  }

  .sec-countdown-minimal .sec-unit {
    width: min(22vw, 100px);
  }
}