:root {
  --title-text-color: #222;
}

.sutong-goods-feature {
  padding: 50px 0;
  background: #E2E3DE;
}

.sutong-goods-feature .container {
  margin: 0 auto;
}

/* 查看更多按钮 */
.sutong-goods-feature .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;
  transition: all 0.2s ease;
  cursor: pointer;
}

.sutong-goods-feature .more span {
  width: 13px;
  height: 12px;
  background: var(--color-primary);
  margin-right: 10px;
  transition: background 0.2s ease;
}

.sutong-goods-feature .more span:last-child {
  margin-right: 27px;
}

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

.sutong-goods-feature .more:hover span {
  background: #fff;
}

/* 大标题背景文字 */
.sutong-goods-feature .tit {
  text-align: center;
  overflow: hidden;
}

.sutong-goods-feature .tit h4 {
  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;
  color: transparent;
}

.sutong-goods-feature .top {
  margin: 55px 0 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 30px;
}

.sutong-goods-feature .t h3 {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.2;
  position: relative;
  z-index: 20;
  text-align: center;
}

.sutong-goods-feature .t a {
  display: inline-block;
  margin: 34px 0 0;
}

.sutong-goods-feature .top .txt {
  flex: 1;
  font-size: 17px;
  line-height: 36px;
}

/* 核心卡片列表：改用Grid，移除负margin */
.sutong-goods-feature ul {
  margin: 45px 0 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 0;
  list-style: none;
}

.sutong-goods-feature ul li {
  background: #fff;
  border-radius: 15px;
  transition: all 0.25s ease;
}

.sutong-goods-feature ul li .item {
  padding: 24px 0px;
  transition: all 0.25s ease;
  height: 100%;
}

.sutong-goods-feature ul li .ico {
  width: 88px;
  padding-left: 8px;
}

.sutong-goods-feature ul li .ico img {
  max-width: 100%;
  height: auto;
  object-fit: contain;
  transition: transform 0.25s ease;
}

.sutong-goods-feature ul li .txt h6 {
  font-size: 23px;
  font-weight: 700;
  color: #000;
  line-height: 1;
  padding-top: 20px;
  padding-left: 25px;
  padding-bottom: 5px;
  border-top: 1px solid #333;
  transition: color 0.25s ease, border-color 0.25s ease;
}

.sutong-goods-feature ul li .txt p {
  font-size: 16px;
  line-height: 30px;
  margin: 10px 0 0;
  word-break: break-word;
  padding-left: 25px;
  transition: color 0.25s ease;
}

/* 卡片悬浮动效：上浮 + 阴影 + 变色 */
.sutong-goods-feature ul li:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
}

.sutong-goods-feature ul li:hover .item {
  background: #333;
  border-radius: 15px;
}

.sutong-goods-feature ul li:hover .ico img {
  transform: scale(1.05);
}

.sutong-goods-feature ul li:hover .txt h6,
.sutong-goods-feature ul li:hover .txt p {
  color: #fff;
}

.sutong-goods-feature ul li:hover .txt h6 {
  border-color: rgba(255,255,255,0.35);
}

/* ========== 响应式媒体查询（精简重构） ========== */
@media screen and (max-width: 1441px) {
  .sutong-goods-feature .tit h4 {
    font-size: 90px;
  }
  .sutong-goods-feature .more {
    padding: 0 35px;
  }
}

@media screen and (max-width: 1367px) {
  .sutong-goods-feature .tit h4 {
    font-size: 80px;
  }
}

@media screen and (max-width: 1281px) {
  .sutong-goods-feature .tit h4 {
    font-size: 70px;
  }
}

@media screen and (max-width: 1171px) {
  .sutong-goods-feature .tit h4 {
    font-size: 60px;
  }
}

/* 平板：4列 → 2列 */
@media screen and (max-width: 992px) {
  .sutong-goods-feature .top {
    margin: 40px 0 0;
    display: block;
    text-align: center;
  }
  .sutong-goods-feature .t h3 {
    font-size: 30px;
  }
  .sutong-goods-feature .top .txt {
    margin: 15px auto 0;
    line-height: 28px;
    max-width: 700px;
  }
  .sutong-goods-feature ul {
    margin: 30px 0 0;
    grid-template-columns: repeat(2, 1fr);
  }
}

@media screen and (max-width: 768px) {
  .sutong-goods-feature {
    padding: 30px 0;
  }
  .sutong-goods-feature .tit h4 {
    font-size: 50px;
  }
  .sutong-goods-feature .more {
    height: 50px;
    padding: 0 30px;
  }
}

/* 手机：2列 → 单列 */
@media screen and (max-width: 576px) {
  .sutong-goods-feature .tit h4 {
    font-size: 32px;
  }
  .sutong-goods-feature ul {
    grid-template-columns: 1fr;
  }
  .sutong-goods-feature ul li .ico {
    width: 70px;
  }
  .sutong-goods-feature ul li .txt h6 {
    font-size: 20px;
  }
  .sutong-goods-feature ul li .txt p {
    font-size: 15px;
    line-height: 24px;
  }
}