header {
      background-color: transparent;
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      padding: 0 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 80px;
      box-sizing: border-box;
      z-index: 10;
    }

    .logo {
      display: flex;
      align-items: center;
      height: 100%;
    }

    .logo img {
      display: block;
    }

    nav {
      margin-left: auto;
      display: flex;
      gap: 20px;
    }

    nav a {
      text-decoration: none;
      color: #006633;
      font-weight: bold;
      font-size: 16px;
    }

    .section-box {
      /* padding: 80px 0; */
      background-color: #fff;
      /* border-top: 1px solid #ddd; */
      /* border-bottom: 1px solid #ddd; */
    }

    #box0 {
      padding: 40px 0;
      background: linear-gradient(to bottom, #ffffff, #f6f6f6);
      text-align: center;
      color: #222;
    }

    #box1 h2 {
      text-align: center;

    }

  .menu-header h2 {
    font-size: 32px;
    font-weight: bold;
    color: #006633;
    margin-bottom: 10px;
    position: relative;
    display: inline-block;
  }

  .menu-header h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: #006633;
    margin: 8px auto 0;
    border-radius: 2px;
  }

  .menu-header p {
    font-size: 16px;
    color: #555;
    margin-top: 8px;
  }
    
  
  footer {
      text-align: center;
      padding: 20px;
      background-color: #f5f5f5;
      color: #888;
    }

    .menu-toggle {
      display: none;
      font-size: 28px;
      color: #006633;
      cursor: pointer;
      margin-top: -20px;
      margin-right: 20px;
    }
    .menu-toggle::before {
      content: "☰";
    }
    .menu-toggle.open {
      /* hide original hamburger text when open */
      color: transparent;
    }
    .menu-toggle.open::before {
      content: "×";
      /* ensure the close icon is visible */
      color: #006633;
    }

    .treatment-notes {
    margin: 60px auto 40px;
    max-width: 600px;
    padding: 20px;
    border: 1px solid #ccc;
    background-color: #fffbea;
  }

  .treatment-notes h3 {
    font-size: 18px;
    color: #cc0000;
    margin-bottom: 10px;
    text-align: center;
  }

  .treatment-notes ul {
    font-size: 14px;
    color: #333;
    padding-left: 80px;
    line-height: 1.6;
  }

  @media (max-width: 768px) {
      header {
        flex-direction: row;
        justify-content: space-between;
        height: auto;
        padding: 10px 20px;
      }

      .menu-toggle {
        display: block;
      }

      nav {
        display: none;
        flex-direction: column;
        background-color: white;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        padding: 10px 0;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        z-index: 9;
        margin-left: 0;
        gap: 10px;
        align-items: center;
      }

      nav.menu-open {
        display: flex;
      }

      .slideshow-caption {
        font-size: 20px;
        padding: 0 20px;
      }

      #box1 {
        padding: 20px 0;
      }

           
    }

  /* Hide hamburger on desktop */
  @media (min-width: 769px) {
    .menu-toggle {
      display: none;
    }

    
  }

  /* Desktop slideshow layout fixes */
  @media (min-width: 769px) {
    .card-slideshow {
      max-width: 1000px;
      margin: 60px auto 40px;
    }
    .card-track {
      padding: 0 40px; /* 境界余白を広げる */
    }
    .card-slide {
      flex: 0 0 70%; /* スライド幅を70%に抑える */
      margin: 0 20px;
    }
    .card-slide img {
      height: 360px; /* 画像高さを伸ばす */
    }
    .card-caption {
      height: auto !important; /* 高さ制限を解除 */
      padding: 16px; /* キャプション内余白を増やす */
    }
  }

/* Responsive and visually appealing feature-summary styles */
.feature-summary {
  padding: 60px 40px;
  background-color: #fefefe;
  color: #222;
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.8;
}

.feature-summary h4 {
  font-size: 22px;
  color: #006633;
  margin-top: 30px;
  margin-bottom: 10px;
  line-height: 1.4;
}

.feature-summary p {
  font-size: 16px;
  margin-bottom: 20px;
}

@media (max-width: 768px) {
  .feature-summary {
    padding: 40px 20px;
  }

  .feature-summary h4 {
    font-size: 18px;
  }

  .feature-summary p {
    font-size: 15px;
  }
}
/* Styles for "CoconeRu.での特別体験" section */
.experience-intro {
  text-align: center;
  padding: 40px 20px;
  background: linear-gradient(to bottom, #ffffff, #f8f8f8);
  color: #333;
}

.experience-intro h3 {
  font-size: 26px;
  color: #006633;
  margin-bottom: 12px;
}

.experience-intro p {
  font-size: 16px;
  line-height: 1.8;
  margin: 6px 0;
}