/* ===================================================
   HIGH-SPEED ELEVATOR STYLESHEET (high.css)
   =================================================== */

/* Reset & Basics */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: #333;
  background-color: #ffffff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden; /* 防止横向多余滚动 */
}

/* 1. 100vh Hero Banner */
.hero-banner {
  width: 100%;
  height: 100vh;
  overflow: hidden;
  background-color: #f0f0f0;
}

.banner-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* 主容器 */
.high-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 80px 30px 100px 30px;
}

/* ===================================================
   SECTION: PRODUCT DETAILS
   =================================================== */
.product-section {
  width: 100%;
}

/* 上容器：左右分栏，等高拉伸保证两端对齐 */
.section-top {
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  gap: 80px;
  margin-bottom: 50px;
  min-height: 460px;
}

/* 左容器：垂直两端分布 */
.top-left {
  flex: 0 0 42%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 4px;
}

.product-title {
  font-size: 2.6rem;
  font-weight: 300;
  color: #2b2b2b;
  line-height: 1.2;
  letter-spacing: -0.5px;
}

/* SE600 渐变大字 */
.gradient-model {
  font-size: 6.8rem;
  font-weight: 200;
  line-height: 0.95;
  letter-spacing: -1px;
  background: linear-gradient(90deg, #c81e3a 0%, #701c6e 45%, #1c2b85 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 右容器 */
.top-right {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

/* 顶部短渐变色条 */
.top-gradient-bar {
  width: 95px;
  height: 3.5px;
  border-radius: 2px;
  background: linear-gradient(90deg, #c81e3a 0%, #1c2b85 100%);
  margin-bottom: 24px;
}

/* 内容块 */
.feature-block {
  width: 100%;
}

/* 副标题样式 */
.feature-sub-title {
  font-size: 1.05rem;
  font-weight: 400;
  color: #2b2b2b;
  margin-bottom: 12px;
  line-height: 1.4;
}

/* 描述文本 */
.feature-desc {
  font-size: 0.88rem;
  color: #555555;
  line-height: 1.68;
  text-align: justify;
}

/* 普通分割线 */
.plain-divider {
  width: 100%;
  height: 1px;
  background-color: #eaedf1;
  margin: 28px 0 24px 0;
}

/* 下容器：展示卡片 */
.section-bottom {
  width: 100%;
}

.showcase-card {
  width: 100%;
  border-radius: 35px;
  overflow: hidden;
}

.showcase-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* ===================================================
   RESPONSIVE DESIGN (响应式断点)
   =================================================== */
@media (max-width: 1024px) {
  .section-top {
    flex-direction: column;
    min-height: auto;
    gap: 40px;
  }

  .top-left {
    flex: auto;
    width: 100%;
    gap: 24px;
  }

  .gradient-model {
    font-size: 5rem;
  }
}

@media (max-width: 768px) {
  .hero-banner {
    height: 70vh;
  }

  .high-container {
    padding: 40px 16px 60px 16px;
  }

  .product-title {
    font-size: 2rem;
  }

  .gradient-model {
    font-size: 4rem;
  }
}