/* ========== 商品特色区块 - 浅蓝渐变卡片 + 标题正常显示 ========== */
.sutong-goods-feature {
  padding: 0 0 100px;
  background: #ffffff;
  position: relative;
  isolation: isolate;
}

/* 细微的顶部装饰线，与上一区块自然分隔 */
.sutong-goods-feature::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  /* background: linear-gradient(90deg, var(--color-primary-light), var(--color-primary), var(--color-primary-light)); */
  border-radius: 4px;
}
.sutong-goods-feature h3{
 font-size: 36px;
    line-height: 1;
    font-weight: 700;
  text-align:center
}
/* ========== 主标题 —— 已正常显示 ========== */
.sutong-goods-feature .tit {
  text-align: center;
  margin-bottom: 40px;
  position: relative;
}

.sutong-goods-feature .tit h4 {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.3;
  color: #0b2b3b;
  letter-spacing: 0.5px;
  margin: 0;
}

/* 小标题 */
.sutong-goods-feature .tit p {
  font-size: 14px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--color-primary);
  font-weight: 600;
  margin-top: 8px;
  position: relative;
  z-index: 2;
}

/* ========== 顶部介绍区 ========== */
.sutong-goods-feature .top {
  margin: 20px 0 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
}

.sutong-goods-feature .t {
  flex: 1.2;
}

.sutong-goods-feature .t h3 {
  font-size: 38px;
  font-weight: 700;
  line-height: 1.2;
  color: #0b2b3b;
  position: relative;
  z-index: 2;
  margin: 0 0 24px 0;
  letter-spacing: -0.01em;
}

/* 更多按钮 */
.sutong-goods-feature .more {
  padding: 0 32px;
  height: 52px;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  border: 1.5px solid var(--color-primary);
  background: transparent;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
  border-radius: 40px;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  gap: 12px;
  cursor: pointer;
  text-decoration: none;
}

.sutong-goods-feature .more span {
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
  display: inline-block;
  transition: all 0.2s;
}

.sutong-goods-feature .more span:first-child {
  width: 12px;
  height: 12px;
}

.sutong-goods-feature .more:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(10, 102, 194, 0.2);
}

.sutong-goods-feature .more:hover span {
  background: #fff;
  transform: scale(1.1);
}

.sutong-goods-feature .top .txt {
  flex: 1;
  font-size: 1rem;
  line-height: 1.6;
  color: #3a5a78;
  background: #f9fcff;
  padding: 24px 28px;
  border-radius: 28px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02), 0 4px 12px rgba(0, 0, 0, 0.03);
  border: 1px solid rgba(10, 102, 194, 0.08);
}

/* ========== 核心卡片（方框）—— 默认浅蓝色渐变背景 ========== */
.sutong-goods-feature ul {
  margin: 60px -20px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
}

.sutong-goods-feature ul li {
  width: calc(50% - 20px);
  list-style: none;
  padding: 0;
}

.sutong-goods-feature ul li .item {
  display: flex;
  padding: 32px 28px;
  /* 默认背景：浅蓝色渐变 */
  background: linear-gradient(135deg, #eef5ff 0%, #e1f0fc 100%);
  border-radius: 32px;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.03), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
  transition: all 0.35s cubic-bezier(0.2, 0.9, 0.4, 1.1);
  border: 1px solid rgba(10, 102, 194, 0.15);
  cursor: pointer;
  height: 100%;
  position: relative;
  overflow: hidden;
}

/* 装饰性微光 */
.sutong-goods-feature ul li .item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 30%, rgba(10, 102, 194, 0.05), transparent 70%);
  pointer-events: none;
  transition: opacity 0.3s;
}

.sutong-goods-feature ul li .ico {
  width: 88px;
  height: 88px;
  background: rgba(10, 102, 194, 0.15);
  border-radius: 28px;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-shrink: 0;
  transition: all 0.3s;
  backdrop-filter: blur(2px);
}

.sutong-goods-feature ul li .ico img {
  max-width: 50%;
  max-height: 50%;
  transition: filter 0.3s;
}

.sutong-goods-feature ul li .txt {
  flex: 1;
  margin-left: 28px;
}

.sutong-goods-feature ul li .txt h6 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.3;
  margin: 0 0 12px 0;
}

.sutong-goods-feature ul li .txt p {
  font-size: 0.95rem;
  line-height: 1.5;
  color: #2c4b6e;
  margin: 0;
  word-break: break-word;
}

/* ===================== 轻盈浅蓝悬浮效果 ===================== */
.sutong-goods-feature ul li:hover .item {
  background: linear-gradient(145deg, #0a66c2);
  border-color: #4d9fff;
  box-shadow: 0 15px 30px -10px rgba(77, 159, 255, 0.18);
  transform: translateY(-5px);
}

.sutong-goods-feature ul li:hover .item::before {
  opacity: 0;
}

.sutong-goods-feature ul li:hover .ico {
  background: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(4px);
}

.sutong-goods-feature ul li:hover .txt h6,
.sutong-goods-feature ul li:hover .txt p {
  color: #cce8fa;
}

.sutong-goods-feature ul li:hover .ico img {
  filter: brightness(0) invert(1);
}

/* ========== 响应式布局 ========== */
@media screen and (max-width: 1400px) {
  .sutong-goods-feature .tit h4 {
    font-size: 40px;
  }
  .sutong-goods-feature .t h3 {
    font-size: 34px;
  }
}

@media screen and (max-width: 1280px) {
  .sutong-goods-feature {
    padding: 60px 0 80px;
  }
  .sutong-goods-feature .tit h4 {
    font-size: 36px;
  }
  .sutong-goods-feature .top .txt {
    padding: 20px 24px;
  }
}

@media screen and (max-width: 992px) {
  .sutong-goods-feature .top {
    flex-direction: column;
    gap: 24px;
  }
  .sutong-goods-feature .t {
    text-align: center;
    width: 100%;
  }
  .sutong-goods-feature .more {
    margin: 0 auto;
  }
  .sutong-goods-feature .top .txt {
    margin-left: 0;
    text-align: center;
  }
  .sutong-goods-feature ul {
    gap: 20px;
    margin-top: 40px;
  }
  .sutong-goods-feature ul li {
    width: 100%;
  }
}

@media screen and (max-width: 768px) {
  .sutong-goods-feature {
    padding: 50px 0 60px;
  }
  .sutong-goods-feature .tit h4 {
    font-size: 32px;
  }
  .sutong-goods-feature .t h3 {
    font-size: 30px;
  }
  .sutong-goods-feature .more {
    height: 48px;
    padding: 0 28px;
  }
  .sutong-goods-feature ul li .item {
    padding: 24px 20px;
  }
  .sutong-goods-feature ul li .ico {
    width: 72px;
    height: 72px;
    border-radius: 24px;
  }
  .sutong-goods-feature ul li .txt {
    margin-left: 20px;
  }
  .sutong-goods-feature ul li .txt h6 {
    font-size: 1.2rem;
  }
}

@media screen and (max-width: 576px) {
  .sutong-goods-feature .tit h4 {
    font-size: 28px;
  }
  .sutong-goods-feature .t h3 {
    font-size: 26px;
  }
  .sutong-goods-feature .top .txt {
    font-size: 0.9rem;
    padding: 16px 20px;
    border-radius: 24px;
  }
  .sutong-goods-feature ul li .item {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 28px 20px;
  }
  .sutong-goods-feature ul li .ico {
    margin-bottom: 20px;
  }
  .sutong-goods-feature ul li .txt {
    margin-left: 0;
  }
  .sutong-goods-feature .more {
    width: 100%;
    justify-content: center;
  }
}