@media screen and (min-width: 1240px) and (max-width: 1360px) {
  /* container */
  .container {
    padding: 0 20px;
  }

  /* system */
  .systemTitle {
    font-size: 18px;
  }
}

@media screen and (max-width: 1024px) {
  /* container */
  .container {
    padding: 0 20px;
  }

  /* header */
  .headerTopRight,
  .headerTopLeft,
  .headerTopRightLinks,
  .headerBottomLinks {
    gap: 16px;
  }

  /* footer */
  .footer {
    margin-bottom: 235px;
  }
  .footerBottomLinks {
    gap: 10px;
  }

  /* system */
  .systemInner,
  .systemLeft,
  .systemRight {
    flex-direction: column;
    gap: 20px;
  }
  .systemLeftImg {
    border-width: 2px;
    border-color: #000;
  }
  .systemTitle {
    font-weight: 700;
    text-align: center;
  }
  .systemPrice {
    font-weight: 700;
    text-align: center;
  }
  .systemBtn {
    font-weight: 700;
  }
}

@media screen and (max-width: 991px) {
  /* header */
  .headerTopRightBtns,
  .headerBottomLinks {
    display: none;
  }

  /* content */
  .content {
    margin-top: 50px;
  }
  .contentLeft {
    width: 100%;
  }
  .contentRight {
    display: none;
  }
  #formbox {
    margin-top: 50px;
  }

  /* footer */
  .footer {
    margin-top: 50px;
  }
  .footerBottomInner {
    flex-direction: column;
    gap: 32px;
  }
  .footerBottomLinks {
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
  }

  /* system */
  .systemInner {
    flex-direction: column;
    gap: 20px;
  }
}
@media screen and (max-width: 767px) {
  /* header */
  .desktopHeader {
    display: none;
  }
  .mobileHeader {
    display: block;
  }
  .mobileHeaderTop {
    background: #231f20;
  }
  .mobileHeaderTopInner img {
    display: block;
    max-width: 100%;
    margin: 0 auto;
  }

  /* content */
  .content {
    margin-top: 30px;
  }
  .contentTitle {
    font-size: 23px;
    line-height: 33px;
  }
  .richardTitle {
    font-size: 20px;
  }
  .contentTitle1 {
    font-size: 18px;
  }
  .contentBoxs {
    flex-direction: column;
  }
  .contentBox {
    width: 100%;
  }
  .contentBox1Img {
    height: 185px;
    margin-bottom: 30px;
  }
  .contentVideoBoxName {
    font-size: 20px;
  }
  .contentVideoBoxInner {
    height: 153px;
  }
  .contentVideoBoxInner2 {
    height: 166px;
  }
  .contentBottomBtn {
    font-size: 20px;
    padding: 25px 0;
    margin: 0 30px;
  }
  #formbox {
    margin-top: 30px;
  }

  /* comment */
  .commentBlockSub {
    font-size: 15px;
  }

  /* footer */
  .footer {
    margin-top: 30px;
  }
  .footerLogo img {
    margin: 0 auto;
  }

  /* system */
  .systemInner,
  .systemLeft,
  .systemRight {
    gap: 10px;
  }
  .systemTitle {
    font-size: 15px;
  }
}