body {
    /*font-family: 'Noto Sans JP', sans-serif;*/
    /*margin: 0;*/
    padding: 0;
    background: #f4f4f8;
    color: #444;
}
.site-header {
    height: 40vh; /* 高さはお好みで */
}
.about-container {
    max-width: 80%;
    margin: 0 auto;
    padding: 40px 20px;
    background: #ffffff;
    box-shadow: 0 0 10px rgba(0,0,0,0.05);
}
.about-image img {
    width: 100%;
    border-radius: 10px;
}
.about-section h2 {
    margin-top: 20px;
    color: #0078D4;

    /*font-size: 1.8rem;
    font-weight: 700;*/
    /*color: #333;*/
    border-left: 5px solid #0078D4;
    padding-left: 12px;
    margin-bottom: 20px;
}

.about-section p {
    font-size: 1.1em;
    font-weight: 500;
    line-height: 1.6;
}


@media screen and (max-width: 768px) {
    .about-section {
        flex-direction: column;
    }
}

.carousel {
  position: relative;
  max-width: 100%;
  margin: 40px auto;
  background: #f0f4f8;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.05);
  text-align: center;
  /*font-size: 1.1rem;*/
}

.carousel-slide {
  display: none;
  transition: opacity 0.5s ease;
}

.carousel-slide.active {
  display: block;
}

.carousel-slide img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin-bottom: 15px;
}

.carousel-controls {
  text-align: center;
  margin-top: 10px;
}

.carousel-controls button {
  background: #0078D4;
  color: white;
  border: none;
  padding: 8px 16px;
  margin: 0 5px;
  border-radius: 4px;
  cursor: pointer;
}

.carousel-controls button:hover {
  background: #005ea1;
}

.accordion-header {
  width: 100%;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: background 0.3s ease;

  margin-top: 20px;
  color: #0078D4;
  border-left: 10px solid #0078D4;
  padding-left: 12px;
  margin-bottom: 20px;
  background: #f0f4f8;
}

.accordion-header:hover {
  border-left: 10px solid #00aee1;
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.accordion-content.open {
  max-height: 4000px; /* 十分な高さに設定 */
}

.accordion-header .icon {
  transition: transform 0.3s ease;
}

.accordion-header.active .icon {
  transform: rotate(180deg);
}