#instructions {
      margin: 0;
      padding: 20px;
      background: #1f232b;
      color: #f0f3f7;
      font-family: Arial, sans-serif;
      line-height: 1.45;
    }
    #instructions .wrap {
      max-width: 1000px;
      margin: 0 auto;
    }
    #instructions .title {
      text-align: center;
      margin-bottom: 10px;
    }
    #instructions .title b { font-size: 22px; }
    #instructions .title i { color: #c7d0dc; }
    #instructions .tabbar {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
      margin: 10px 0 16px;
    }
    #instructions .tab-btn {
      border: 1px solid #4b5567;
      background: #2a303b;
      color: #f0f3f7;
      padding: 7px 12px;
      border-radius: 6px;
      cursor: pointer;
      font-size: 13px;
    }
    #instructions .tab-btn.active {
      background: #3a4352;
      border-color: #6d7f9a;
    }
    #instructions .panel {
      border: 1px solid #3a4352;
      border-radius: 8px;
      background: #2a303b;
      padding: 14px 16px;
    }
    #instructions .panel h2 {
      margin: 0 0 8px;
      font-size: 18px;
      border-bottom: 1px solid #3a4352;
      padding-bottom: 5px;
    }
    #instructions ul, #instructions ol { margin: 8px 0 0 20px; }
    #instructions li { margin: 6px 0; }
    #instructions p { margin: 8px 0; }
    #instructions code {
      background: #161a20;
      color: #d8e6ff;
      padding: 1px 5px;
      border-radius: 4px;
    }
    #instructions a { color: #9fc3ff; }
    #instructions .foot { text-align: center; color: #c7d0dc; margin-top: 12px; font-size: 12px; }