.solarsun_feature.feature_bg_area {
  background-position: center center;
  background-size: cover;
  padding: 90px 0 215px;
  position: relative;
}
.solarsun_feature.feature_bg_area::before{
  content:"";
  height: 100%;
  width: 100%;
  top: 0;
  left: 0;
  position: absolute;
  background-color: color-mix(in srgb, var(--color-primary) 80%, transparent);
  opacity: .95;
}
.solarsun_feature.feature_bg_area .witr_section_title {
  margin-bottom: 0;
}
.solarsun_feature.feature_bg_area .witr_section_title_inner h1,
.solarsun_feature.feature_bg_area .witr_section_title_inner h2,
.solarsun_feature.feature_bg_area .witr_section_title_inner h3{
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  font-family: var(--title-font-family);
}
.solarsun_feature.feature_bg_area .witr_section_title_inner h3{
  font-size: 40px;
}
.solarsun_feature.feature_bg_area .witr_section_title_inner h2{
  font-size: 16px;
}
.solarsun_feature_area {
  margin-top: -168px;
  margin-bottom: 0;
}
.solarsun_feature_area .row {
  align-items: stretch;
}
.solarsun_feature .witr_feature_13.sub-border-2{
  height: 100%;
  padding: 30px 30px 6px 40px;
  background-color: #fff;
  box-shadow: 0px 0px 30px 0px rgb(0 0 0 / 5%);
  margin: 0 0 20px;
}
.solarsun_feature .sub-item {
  position: relative;
  padding: 20px 0;
  -webkit-transition: .5s;
  transition: .5s;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
}
.solarsun_feature .witr_feature_13 .sub-item .sub-item-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 30px;
  background-color: var(--color-primary);
  border-radius: 50%;
  width: 95px;
  height: 95px;
}
.solarsun_feature .witr_feature_13 .sub-item .sub-item-wrapper img {
  width: 30px;
  height: 31px;
  object-fit: contain;
}
.solarsun_feature .witr_feature_13 .sub-item .sub-item-wrapper:hover {
  background-color: var(--btn-hover);
}
.solarsun_feature .all_feature_color h2 {
  margin: 20px 0 10px;
  font-size: 25px;
  font-weight: 700;
  font-family: var(--title-font-family);
  color: var(--title-text-color);
}
.solarsun_feature .sub-border-2 .sub-item p {
  padding: 0 0;
  font-family: var(--font-family);
  font-size: 17px;
  font-weight: 400;
  color: var(--text-color);
  height: 100%;
}
.solarsun_feature .witr_feature_13.sub-border-2:hover .sub-item .sub-item-wrapper {
  background: var(--btn-hover);
}

/* 新增：卡片小板块按钮样式 */
.card-btn {
  display: inline-block;
  margin-top: 18px;
  margin-bottom: 10px;
  padding: 11px 26px;
  background-color: var(--color-primary);
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  border-radius: 4px;
  text-decoration: none;
  transition: all 0.3s ease;
  width: 85px;
}
.card-btn:hover {
  background-color: var(--btn-hover);
  color: #fff;
}

@media (max-width: 767px) {
  .solarsun_feature.feature_bg_area .witr_section_title_inner h1,
  .solarsun_feature.feature_bg_area .witr_section_title_inner h2,
  .solarsun_feature.feature_bg_area .witr_section_title_inner h3 {
    font-size: 22px;
  }
  .card-btn {
    padding: 10px 22px;
    font-size: 14px;
  }
}