.quiz-card {
  border: 1px solid #ccc;
  padding: 15px;
  margin: 15px;
  width: 300px;
  background-color: #f9f9f9;
  box-shadow: 2px 2px 5px rgba(0,0,0,0.1);
  display: inline-block;
  vertical-align: top;
}

.question {
  font-weight: bold;
  margin-bottom: 10px;
}

.show-answer {
  background-color: #0077cc;
  color: #fff;
  border: none;
  padding: 8px 12px;
  cursor: pointer;
  margin-bottom: 10px;
}

.answer {
  margin-top: 10px;
}

.answer img {
  max-width: 100%;
  height: auto;
  display: block;
  margin-bottom: 5px;
}

.hidden {
  display: none;
}


.quiz-card {
  display: none;
}

.quiz-card.active {
  display: block;
}


body {
  margin: 0;
  padding: 0;
  width: 100%;
}

.container, .main, .content {
  width: 100%;
  max-width: none;
  margin: 0 auto;
}


img {
  max-width: 100%;
  height: auto;
}

.container {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
}
.item {
  flex: 1 1 100%;
}



body {
  width: 100%;
  font-family: "Yu Gothic", sans-serif;
  margin: 0;
  padding: 0;
  background-color: #fdfdfd;
  color: #333;

}

header {
  text-align: center;
  padding: 2em 1em;
  background-color: #e0f7fa;
  width: 100%;
}

.card-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}

.card {
  width: 250px;
  border: 1px solid #ccc;
  padding: 10px;
  background-color: #fff;
  box-shadow: 2px 2px 5px rgba(0,0,0,0.1);
  display: flex;
  flex-direction: column;
  align-items: center;
}


.card:hover {
  transform: translateY(-5px);
}

.card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.card h2 {
  margin: 0.5em 1em 0;
  font-size: 1.2em;
}

.card p {
  margin: 0.5em 1em 1em;
  font-size: 0.95em;
}

.card a {
  display: block;
  margin: 0 1em 1em;
  padding: 0.5em;
  background-color: #0288d1;
  color: white;
  text-align: center;
  text-decoration: none;
  border-radius: 4px;
}

.card a:hover {
  background-color: #01579b;
}

/* 危険度による色分け */
.danger-high {
  border-top: 6px solid #d32f2f;
}
.danger-medium {
  border-top: 6px solid #f57c00;
}
.danger-low {
  border-top: 6px solid #fbc02d;
}

/* モーダルスタイル */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0; top: 0;
  width: 100%; height: 100%;
  background-color: rgba(0,0,0,0.7);
}

.modal-content {
  background-color: #fff;
  margin: 5% auto;
  padding: 1em;

  border-radius: 8px;
  text-align: center;
  position: relative;
  width: 100%;
}

.modal-content img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 4px;
}

#modal-close {
  position: absolute;
  top: 10px; right: 15px;
  font-size: 1.5em;
  cursor: pointer;
}

.page-wrapper {
  width: 98%;
  margin: 0 auto;
}