/* ===== ベース設定 ===== */
body {
    margin: 0;
    padding: 0;
  }
  
  .main_title {
    font-size: 2.5em;
    text-align: center;
  }
  
  /* ===== フロー画像 ===== */
  .flow_img {
    margin: auto;
    width: 320px;
    height: 240px;
    max-width: 80%;
  }
  
  /* ===== タイトルエリア ===== */
  .ttl_box {
    margin: 20px;
  }
  
  .flow_ttl {
    writing-mode: vertical-rl;
    margin: 15px 20px;
  }
  
  /* ===== フレックスレイアウト ===== */
  .flow_flex {
    background-color: #fff;
    display: flex;
    justify-content: center;
    padding: 0 30px;
  }
  
  /* ===== 番号アイコン ===== */
  .circle {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #00790c;
    border-radius: 50%;
    width: 70px;
    height: 70px;
    color: #fff;
  }
  
  /* ===== 左右ブロックコンテナ ===== */
  .flow_left,
  .flow_right {
    margin: 15px 100px;
    padding: 10px;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
  }
  
  .flow_left {
    background-color: azure;
  }
  
  .flow_right {
    background-color: rgb(255, 255, 240);
  }
  
  .flow_left p,
  .flow_right p {
    padding: 0 10px;
    line-height: 3em;
  }
  
  /* ===== 内部レイアウト ===== */
  .left_inner,
  .right_inner {
    display: flex;
    align-items: center;
    gap: 20px;
    margin: 50px;
  }
  
  /* ===== テキストエリア ===== */
  .text_container {
    margin: auto;
    text-align: left;
    max-width: 600px;
    padding: 0 20px;
  }
  
  /* ===== タグ装飾 ===== */
  .tag_left,
  .tag_right {
    font-size: 40px;
  }
  
  .tag_left {
    text-shadow: 2px 2px 5px #0a4e6e;
  }
  
  .tag_right {
    text-shadow: 2px 2px 5px #abc765;
  }
  
  /* ===== ボタン ===== */
  .link_btn {
    box-shadow: inset 0 0 0 0 rgb(6, 100, 11);
    padding: 0 0.25rem;
    margin: 0 -0.25rem;
    transition: color 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
    font-family: 'Poppins', sans-serif;
    font-size: 20px;
    font-weight: 700;
    line-height: 1.5;
    text-decoration: none;
  }
  
  .link_btn:hover {
    color: #3f3c3c;
    box-shadow: inset 270px 0 0 0 rgb(158, 253, 163);
  }
  
  /* ===== レスポンシブ対応：1024px以下 ===== */
  @media screen and (max-width: 1024px) {
    .flow_flex {
      flex-direction: column;
      align-items: center;
      padding: 0 10px;
    }
  
    .ttl_box {
      display: flex;
      align-items: center;
      margin-bottom: 20px;
    }
  
    .flow_ttl {
      writing-mode: horizontal-tb;
      margin: 0 10px;
      font-size: 0.9rem;
    }
  
    .circle {
      width: 50px;
      height: 50px;
      font-size: 0.8rem;
    }
  
    .left_inner,
    .right_inner {
      flex-direction: column;
      margin: 20px;
    }
  
    .flow_left,
    .flow_right {
      margin: 15px 20px;
    }
  
    .tag_left,
    .tag_right {
      font-size: 28px;
      text-align: center;
    }
  
    .link_btn {
      display: inline-block;
      margin: 20px auto;
      text-align: center;
    }
  }