.container {
    max-width: 100%;
    margin: 0 auto;
    padding: 0 15px; /* Bootstrap default padding */
}

        .onsen-section {
            margin-bottom: 0;
            background: white;
            overflow: hidden;
        }

        .section-content {
            display: flex;
            align-items: stretch;
        }

        .section-reverse {
            flex-direction: row-reverse;
        }

        .image-container {
            flex: 1;
            position: relative;
            overflow: hidden;
        }

        .onsen-image {
            width: 100%;
            height: 350px;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .onsen-image:hover {
            transform: scale(1.05);
        }

        .text-content {
            flex: 1;
            padding: 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .onsen-title {
            font-size: 2rem;
            color: #2c5282;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .onsen-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background: linear-gradient(90deg, #4299e1, #90cdf4);
        }

        .onsen-description {
            font-size: 1rem;
            line-height: 1.8;
            color: #555;
            margin-bottom: 15px;
        }

        .outdoor-section {
            background: #333333;
            color: white;
            text-align: center;
            padding: 80px 40px;
            margin: 0;
            position: relative;
        }

        .outdoor-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.02) 50%, transparent 70%);
            pointer-events: none;
        }

        .outdoor-title {
            font-size: 3rem;
            margin-bottom: 40px;
            font-weight: 300;
            letter-spacing: 0.1em;
            color: white;
            position: relative;
        }

        .outdoor-title::after {
            content: '';
            position: absolute;
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 2px;
            background: white;
        }

        .outdoor-images {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2px;
            margin-top: 60px;
            background: #000;
        }

        .outdoor-image {
            width: 100%;
            height: 600px;
            object-fit: cover;
            transition: all 0.4s ease;
            filter: grayscale(30%) contrast(1.1);
        }

        .outdoor-image:hover {
            transform: scale(1.02);
            filter: grayscale(0%) contrast(1.2);
        }

        .outdoor-description {
            max-width: 800px;
            margin: 50px auto 0;
            font-size: 1.1rem;
            line-height: 2;
            font-weight: 300;
            color: #f0f0f0;
            letter-spacing: 0.05em;
        }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 0;
            margin: 0;
            background: #f8f8f8;
        }

        .feature-card {
            background: white;
            padding: 30px;
            text-align: center;
            transition: transform 0.3s ease;
            border-right: 1px solid #e2e8f0;
        }

        .feature-card:last-child {
            border-right: none;
        }

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

        .feature-icon {
            font-size: 3rem;
            margin-bottom: 15px;
            color: #4299e1;
        }

        .feature-title {
            font-size: 1.3rem;
            color: #2c5282;
            margin-bottom: 15px;
        }

        @media (max-width: 768px) {
            .section-content {
                flex-direction: column !important;
            }
            
            .text-content {
                padding: 30px 20px;
            }
            
            .onsen-title {
                font-size: 1.5rem;
            }
            
            .outdoor-title {
                font-size: 2rem;
            }
            
            .outdoor-section {
                padding: 40px 20px;
            }
        }

.container02 {
      display: flex;
      flex-direction: row;
      align-items: flex-start;
      justify-content: center;
      padding: 40px;
    }
    .image02 {
      flex: 2;
    }
    .image02 img {
      width: 100%;
      height: auto;
      border-radius: 4px;
    }
    .text02 {
      flex: 1;
      padding-left: 30px;
    }
    .text02 h2 {
      font-size: 2em;
      margin: 0;
      writing-mode: vertical-rl;
      text-orientation: upright;
    }
    .subtitle02 {
      text-align: center;
      margin: 40px 0 10px 0;
      font-size: 1.2em;
    }
    .description02 {
      text-align: center;
      font-size: 0.95em;
      line-height: 1.8;
      color: #555;
    }
    .en-title02 {
      font-size: 0.9em;
      color: #777;
      text-align: right;
      margin-right: 20px;
    }
.container03 {
  display: flex;
  gap: 20px; /* 画像の間隔 */
  justify-content: center;
  flex-wrap: wrap;
}

/* スマホサイズ (例: 768px以下) のとき縦並び */
@media (max-width: 768px) {
  .container03 {
    flex-direction: column;
    align-items: center; /* 中央揃え */
  }

  .container03 .image03 {
    width: 100%; /* 横幅をスマホ画面に合わせる */
    max-width: 400px; /* 必要なら最大幅を制限 */
  }

  .container03 img {
    width: 100%; /* 画像を親要素にフィット */
    height: auto;
  }
}

.image03 {
  position: relative;
  width: 45%; /* 横2つに並ぶように調整 */
}

.image03 img {
  width: 100%;
  height: auto;
  display: block;
}

.text03 {
  position: absolute;
  bottom: 10px;
  left: 10px;
  color: #fff;
  background: rgba(0, 0, 0, 0.5);
  padding: 5px;
  border-radius: 5px;
}

.vertical-title {
  writing-mode: vertical-rl;   /* 縦書き */
  text-orientation: upright;   /* 日本語を縦組みに */
  font-size: clamp(1.2rem, 3vw, 2em); /* 最小1.2rem ～ 最大2em */
  color: #fff;
  border: 1px solid #fff;
  padding: 20px;
  display: inline-block;
  margin: 20px auto;
  border-radius: 5px;
}
.vertical-p {
  writing-mode: vertical-rl;   /* 縦書き */
  text-orientation: upright;   /* 日本語を縦組みに */
  font-size: 1em;
  color: #fff;                 /* 文字を白に */
 
  padding: 20px;               /* ← 内側の余白を大きくして間隔を広げる */
  display: inline-block;       
  margin: 20px auto;           /* 外側の余白（上下左右にスペース） */
 
}

.outdoor-section01 {
            background: #fff;
            color: #333;
            text-align: center;
            padding: 80px 40px;
            margin: 0;
            position: relative;
        }

        .outdoor-section01::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.02) 50%, transparent 70%);
            pointer-events: none;
        }

       .outdoor-title01 {
    font-size: clamp(1.5rem, 5vw, 3rem);
    margin-bottom: 40px;
    font-weight: 300;
    letter-spacing: 0.1em;
    color: #333;
    position: relative;
}

.outdoor-title01::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 2px;
    background: white;
}

.vertical-title01 {
  writing-mode: vertical-rl;   /* 縦書き */
  text-orientation: upright;   /* 日本語を縦組みに */
  font-size: 2em;
  color: #333;                 /* 文字を黒に */
  border: 1px solid #333;      /* 白い枠線 */
  padding: 20px;               /* ← 内側の余白を大きくして間隔を広げる */
  display: inline-block;       
  margin: 20px auto;           /* 外側の余白（上下左右にスペース） */
  border-radius: 5px;          /* 枠を少し丸める（不要なら削除） */
　}