.sutong-pro-list {
  padding: 50px 0 0
}

.sutong-pro-list .container {
  padding-bottom: 60px;
  border-bottom: 1px solid #e9e9e9
}

.sutong-pro-list .more {
  padding: 0 40px;
  height: 64px;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  border: 1px solid #dbe0e3;
  font-size: 15px;
  color: var(--title-text-color);
  font-weight: 700
}

.sutong-pro-list .more span {
  width: 13px;
  height: 12px;
  background: var(--color-primary);
  margin-right: 10px
}

.sutong-pro-list .more span:last-child {
  margin-right: 27px
}

.sutong-pro-list .more:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff
}

.sutong-pro-list .more:hover span {
  background: #fff
}

.sutong-pro-list .tit {
  text-align: center;
  height: 75px;
  overflow: hidden;
  border-bottom: 1px solid #eaedef
}

.sutong-pro-list .tit h4 {
  color: #fff;
  font-size: 98px;
  font-weight: 700;
  line-height: 1;
  text-shadow: rgba(210, 217, 221, .75) 1px 0 0, rgba(210, 217, 221, .75) 0 1px 0, rgba(210, 217, 221, .75) -1px 0 0, rgba(210, 217, 221, .75) 0 -1px 0
}

.sutong-pro-list .top {
  margin: 55px 0 0;
  display: flex;
  justify-content: space-between
}

.sutong-pro-list .t {
  width: 685px
}

.sutong-pro-list .t h3 {
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  position: relative;
  z-index: 20
}

.sutong-pro-list .t h3::after {
  display: block;
  content: '';
  width: 80px;
  height: 2px;
  background: var(--color-primary);
  margin: 20px auto 0 0
}

.sutong-pro-list .t a {
  margin: 34px 0 0
}

.sutong-pro-list .top .txt {
  flex: 1;
  margin-left: 15px;
  font-size: 17px;
  line-height: 36px
}

.sutong-pro-list .tab {
  margin: 50px 0 0
}

.sutong-pro-list .tab ul {
  display: flex;
  justify-content: center
}

.sutong-pro-list .tab ul li {
  font-size: 20px;
  color: var(--title-text-color);
  font-weight: 700
}

.sutong-pro-list .tab ul li:not(:last-child)::after {
  content: "/";
  font-size: 20px;
  color: var(--title-text-color);
  margin: 0 10px
}

.sutong-pro-list .tab ul li.active a {
  color: var(--color-primary)
}

.sutong-pro-list .list ul {
  margin: 30px -20px 0;
  display: flex;
  flex-wrap: wrap
}

/* PC端：4列布局（原有逻辑） */
.sutong-pro-list .list ul li {
  width: calc(100%/4);
  padding: 20px
}

.sutong-pro-list .list ul li .box {
  height: 100%;
  text-align: center; /* 所有端保持文字居中 */
  display: flex;
  flex-direction: column; /* 确保上图下文的垂直流 */
}

.sutong-pro-list .list ul li .pic {
  width: 100%;
  display: block;
  flex-shrink: 0; /* 防止图片被压缩 */
}

.sutong-pro-list .list ul li .pic img {
  aspect-ratio: 1 / 1;
  object-fit: cover;
  width: 100%; /* 图片宽度铺满容器 */
}

.sutong-pro-list .list ul li h5 {
  font-size: 17px;
  color: var(--title-text-color);
  font-weight: 600;
  line-height: 1;
  margin: 30px 0 0
}

.sutong-pro-list .list ul li p {
  font-size: 14px;
  line-height: 26px;
  margin: 25px 0 0;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
  word-break: break-word;
  flex-grow: 1; /* 描述占满剩余空间，保持布局统一 */
}

/* 通用按钮样式 */
.more1 {
  padding: 0 40px;
  height: 64px;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  border: 1px solid #dbe0e3;
  font-size: 15px;
  color: var(--title-text-color);
  font-weight: 700
}

.more1 span {
  width: 13px;
  height: 12px;
  background: var(--color-primary);
  margin-right: 10px
}

.more1 span:last-child {
  margin-right: 27px
}

.more1:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff
}

.more1:hover span {
  background: #fff
}

/* ========== 响应式适配 ========== */
/* 大屏PC适配（原有逻辑） */
@media screen and (max-width: 1441px) {
  .sutong-pro-list .tit h4 {
    font-size: 90px
  }
  .sutong-pro-list .more {
    padding: 0 35px
  }
  .sutong-pro-list .t {
    width: 540px
  }
}

@media screen and (max-width: 1367px) {
  .sutong-pro-list .tit h4 {
    font-size: 80px
  }
  .sutong-pro-list .t {
    width: 520px
  }
  .sutong-pro-list .tit {
    height: 65px
  }
}

@media screen and (max-width: 1281px) {
  .sutong-pro-list .tit h4 {
    font-size: 70px
  }
  .sutong-pro-list .tit {
    height: 60px
  }
  .sutong-pro-list .t {
    width: 500px
  }
}

@media screen and (max-width: 1171px) {
  .sutong-pro-list .tit h4 {
    font-size: 60px
  }
  .sutong-pro-list .tit {
    height: 50px
  }
  .sutong-pro-list .t {
    width: 480px
  }
}

/* iPad端（992px）：核心修改 - 2列布局 */
@media screen and (max-width: 992px) {
  .sutong-pro-list .t {
    width: 100%
  }
  .sutong-pro-list .top {
    margin: 40px 0 0;
    display: block
  }
  .sutong-pro-list .t {
    text-align: center
  }
  .sutong-pro-list .t h3::after {
    margin: 15px auto 0
  }
  .sutong-pro-list .top .txt {
    margin: 15px 0 0;
    line-height: 28px
  }
  .sutong-pro-list .tab ul li {
    font-size: 18px
  }
  
  /* iPad端2列核心：宽度改为50%，保留间距 */
  .sutong-pro-list .list ul {
    margin: 30px -10px 0; /* 缩小左右负边距，适配2列 */
  }
  .sutong-pro-list .list ul li {
    width: 50%; /* 一行2个 */
    padding: 10px; /* 调整内边距，避免拥挤 */
  }
  
  /* 保持上图下文布局，取消多余样式 */
  .sutong-pro-list .list ul li .box {
    display: flex;
    flex-direction: column; /* 强制上图下文 */
    text-align: center;
  }
  .sutong-pro-list .list ul li .pic {
    width: 100%;
    margin: 0 auto;
  }
  .sutong-pro-list .list ul li .tt {
    flex: none;
    margin: 0;
    padding: 0 5px;
  }
  .sutong-pro-list .list ul li h5 {
    margin: 20px 0 0;
  }
  .sutong-pro-list .t h3 {
    font-size: 30px
  }
}

/* 移动端（768px）：核心修改 - 1列布局 */
@media screen and (max-width: 768px) {
  .sutong-pro-list {
    padding: 30px 0 0
  }
  .sutong-pro-list .more {
    padding: 0 30px;
    height: 50px
  }
  .sutong-pro-list .tit h4 {
    font-size: 50px
  }
  .sutong-pro-list .tit {
    height: 45px
  }
  .sutong-pro-list .tab ul {
    flex-wrap: wrap;
    text-align: center
  }
  .sutong-pro-list .tab ul li {
    font-size: 17px;
    width: 50%;
    margin: 10px 0 0
  }
  .sutong-pro-list .tab ul li:not(:last-child)::after {
    display: none
  }
  
  /* 移动端1列核心：宽度改为100% */
  .sutong-pro-list .list ul {
    margin: 30px 0 0; /* 取消负边距 */
  }
  .sutong-pro-list .list ul li {
    width: 100%; /* 一行1个 */
    padding: 15px 10px; /* 调整内边距 */
    margin-bottom: 20px; /* 增加列表项间距 */
  }
  
  /* 移动端上图下文样式优化 */
  .sutong-pro-list .list ul li .pic {
    max-width: 300px; /* 限制图片最大宽度，避免过大 */
    margin: 0 auto;
  }
  .sutong-pro-list .list ul li .pic img {
    border-radius: 4px; /* 可选：图片圆角 */
  }
  .sutong-pro-list .list ul li h5 {
    font-size: 16px;
    margin: 15px 0 0;
  }
  .sutong-pro-list .list ul li p {
    line-height: 24px;
    margin: 10px 0 0;
    padding: 0 5px;
  }
}

/* 小屏移动端（576px）：适配更小屏幕 */
@media screen and (max-width: 576px) {
  .sutong-pro-list .tit h4 {
    font-size: 40px
  }
  .sutong-pro-list .list ul li h5 {
    font-size: 15px;
  }
  .sutong-pro-list .list ul li p {
    font-size: 13px;
    line-height: 22px;
  }
}

/* 超小屏（480px）：最终适配 */
@media screen and (max-width: 480px) {
  .sutong-pro-list .list ul li .pic {
    max-width: 100%; /* 取消最大宽度，完全适配 */
  }
  .sutong-pro-list .list ul li {
    padding: 10px 5px;
    margin-bottom: 15px;
  }
}