.kanken-countdown {
  --kanken-green: #15803d;
  --kanken-green-dark: #14532d;
  --kanken-green-soft: #f0fdf4;
  --kanken-line: #bbf7d0;
  position: relative;
  overflow: hidden;
  margin: 0 0 32px;
  padding: clamp(20px, 4vw, 30px);
  border: 1px solid var(--kanken-line);
  border-left: 6px solid var(--kanken-green);
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 12px 28px rgba(21, 128, 61, .1);
  line-height: 1.5;
}

.kanken-countdown[hidden] {
  display: none;
}

.kanken-countdown::before {
  position: absolute;
  top: -110px;
  right: -80px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 197, 94, .14), rgba(34, 197, 94, 0) 68%);
  content: "";
  pointer-events: none;
}

.kanken-countdown__topline,
.kanken-countdown__header,
.kanken-countdown__grid,
.kanken-countdown__footer {
  position: relative;
  z-index: 1;
}

.kanken-countdown__topline,
.kanken-countdown__header,
.kanken-countdown__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px 18px;
}

.kanken-countdown__topline {
  margin-bottom: 12px;
}

.kanken-countdown__eyebrow {
  color: var(--kanken-green-dark);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
}

.kanken-countdown__eyebrow::before {
  content: "●";
  margin-right: 7px;
  color: #22c55e;
  font-size: 9px;
}

.kanken-countdown__source {
  color: #64748b;
  font-size: 11px;
}

.kanken-countdown__header {
  align-items: flex-end;
  margin-bottom: 18px;
}

.kanken-countdown__title {
  color: #0f172a;
  font-size: clamp(22px, 4vw, 30px);
  font-weight: 800;
  letter-spacing: .02em;
}

.kanken-countdown__exam {
  margin-top: 3px;
  color: #475569;
  font-size: 13px;
  font-weight: 700;
}

.kanken-countdown__date {
  color: var(--kanken-green-dark);
  font-size: 14px;
  font-weight: 800;
  white-space: nowrap;
}

.kanken-countdown__grid {
  display: grid;
  grid-template-columns: 1.35fr repeat(3, 1fr);
  gap: 10px;
}

.kanken-countdown__unit {
  display: flex;
  min-width: 0;
  min-height: 88px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 10px 6px 8px;
  border: 1px solid #dcfce7;
  border-radius: 12px;
  color: var(--kanken-green-dark);
  background: var(--kanken-green-soft);
}

.kanken-countdown__unit--days {
  border-color: transparent;
  color: #fff;
  background: linear-gradient(145deg, #16a34a, var(--kanken-green-dark));
}

.kanken-countdown__number {
  font-size: clamp(28px, 6vw, 42px);
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  letter-spacing: .01em;
  line-height: 1;
}

.kanken-countdown__unit span {
  margin-top: 7px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
}

.kanken-countdown__footer {
  align-items: flex-start;
  margin-top: 13px;
  color: #64748b;
  font-size: 11px;
}

.article-body .kanken-countdown__footer a {
  color: var(--kanken-green-dark);
  font-weight: 700;
  white-space: nowrap;
}

.kanken-countdown.is-urgent {
  --kanken-green: #dc2626;
  --kanken-green-dark: #991b1b;
  --kanken-green-soft: #fef2f2;
  --kanken-line: #fecaca;
}

.kanken-countdown.is-urgent .kanken-countdown__unit {
  border-color: #fee2e2;
}

.kanken-countdown.is-urgent .kanken-countdown__unit--days {
  border-color: transparent;
  background: linear-gradient(145deg, #ef4444, #991b1b);
}

.kanken-countdown.is-today .kanken-countdown__unit--days .kanken-countdown__number {
  font-size: clamp(20px, 5vw, 30px);
}

.kanken-countdown__noscript {
  padding: 14px 18px;
  border: 1px solid #fde68a;
  border-radius: 10px;
  color: #78350f;
  background: #fffbeb;
}

@media (max-width: 600px) {
  .kanken-countdown {
    padding: 18px 15px;
    border-left-width: 4px;
  }

  .kanken-countdown__topline,
  .kanken-countdown__header,
  .kanken-countdown__footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .kanken-countdown__header {
    gap: 6px;
  }

  .kanken-countdown__grid {
    gap: 6px;
  }

  .kanken-countdown__unit {
    min-height: 76px;
    padding-right: 3px;
    padding-left: 3px;
  }

  .kanken-countdown__number {
    font-size: clamp(24px, 9vw, 34px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .kanken-countdown,
  .kanken-countdown * {
    animation: none !important;
    transition: none !important;
  }
}