@media only screen and (max-width: 991px) {
  .small-research,
  .big-research {
    height: fit-content;
    max-height: 500px;
  }
  .hero-main-text {
    /* font-size: 50px; */
    width: 80%;
  }
  .ss-review-container {
    width: 80%;
  }
  .ts-string,
  .ts-star {
    display: none;
  }
  .ts-enclose {
    position: relative;
  }
  .ts-box {
    width: 80%;
    z-index: 1;
    /* margin-right: 0; */
    margin: auto;
  }
  .ts-designs {
    position: absolute;
  }
  .fos-enclose {
    gap: 40px;
  }
  .fos-image {
    min-width: 105px;
  }
  .fos-why-container {
    width: 100%;
  }
  .fos-image {
    width: 70%;
  }
}
@media only screen and (max-width: 768px) {
  
  .ss-text {
    line-height: 32px;
    font-size: 22px;
  }
  .ss-review-container {
    flex-direction: column;
    gap: 40px;
  }
  .review-box p {
    line-height: 32px;
  }
  .ss-research-container {
    grid-template-areas:
      "big big"
      "small1 small2"
      "small3 small4";
  }
  .big-research {
    padding: 30px;
  }
  .big-research p {
    font-size: 28px;
    line-height: 34px;
  }
  .ssr-p {
    font-size: 14px;
    line-height: 22px;
  }
  .ssr-title {
    font-size: 15px;
  }
}
@media only screen and (max-width: 630px) {
  
  header{
    padding: 20px 0;
  }
  
  .hero-section {
    overflow: hidden;
  }
  .hero-btn {
    padding: 16px 10px;
    font-size: 16px;
  }
  .hero-main-image {
    margin-left: 10%;
    min-width: 500px;
  }
  .ss-text {
    font-size: 22px;
    line-height: 32px;
    width: 90%;
  }
  .big-research p {
    font-size: 24px;
  }
  .small-research {
    padding: 20px;
    gap: 12px;
    max-height: 310px;
  }
  .fos-image {
    display: none;
  }
  .fos-why-container {
    width: 280px;
  }
  .fos-why-container > p {
    font-size: 20px;
    margin-bottom: 0;
  }
  .fos-features {
    padding: 30px 20px;
  }
  .fos-features p {
    font-size: 14px;
  }
  .fos-features li {
    font-size: 12px;
    padding: 0;
  }
  .ts-box {
    padding: 30px;
  }
  .ts-p {
    font-size: 16px;
    line-height: 24px;
  }
  .second-section {
    padding-top: 200px;
  }
  .ss-research-container {
    gap: 10px;
    width: 90%;
  }
  .big-research button {
    padding: 10px 32px 10px;
  }
  .ssr-title {
    font-size: 15px;
    line-height: 20px;
    font-weight: 600;
  }
  .ts-heading {
    font-size: 24px;
    line-height: 32px;
  }
  .ts-box button {
    width: fit-content;
    padding: 16px 26px;
  }
  .request-file{
    margin: 70px auto 50px;
  }
}