/* ===================================================
   PLATFORM TYPE ELEVATOR (platform.css)
   =================================================== */

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

html, body {
  min-height: 100%;
  overflow-x: hidden;
}

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;
}

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

/* 通用顶部渐变分割线：整条浅灰线，左端加粗渐变条 */
.top-gradient-bar {
  position: relative;
  width: 100%;
  height: 1px;
  background-color: #eaedf1;
  margin-bottom: 28px;
}

.top-gradient-bar::before {
  content: "";
  position: absolute;
  left: 0;
  top: -1.5px;
  width: 110px;
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(90deg, #c81e3a 0%, #5b1a7d 50%, #1b2685 100%);
}

/* ===================================================
   SECTION 1: OVERVIEW & SPECS GRAPHIC (SE100P)
   =================================================== */
.section-overview {
  margin-bottom: 100px;
}

.section-top {
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  gap: 80px;
  min-height: 320px;
  margin-bottom: 40px;
}

/* 左容器：上下两端分布 */
.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;
}

/* SE100P 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;
}

.product-desc {
  font-size: 0.88rem;
  color: #555555;
  line-height: 1.68;
  text-align: justify;
}

/* 下部全景参数图容器 */
.section-bottom {
  width: 100%;
}

.specs-graphic-card {
  width: 100%;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.08);
}

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

/* ===================================================
   SECTION 2: CUSTOM-MADE COLORS (背景图 + 顶部文字)
   =================================================== */
.section-colors {
  margin-bottom: 100px;
}

.colors-card {
  position: relative;
  width: 100%;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.08);
  background-color: #f7f9fc;
}

.colors-header {
  position: absolute;
  top: 40px;
  left: 0;
  right: 0;
  text-align: center;
  z-index: 2;
  padding: 0 20px;
}

.colors-title {
  font-size: 2.3rem;
  font-weight: 300;
  color: #2b2b2b;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.colors-desc {
  font-size: 0.88rem;
  color: #666666;
  line-height: 1.6;
}

.colors-bg-wrap {
  width: 100%;
}

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

/* ===================================================
   SECTION 3: COLORFUL BACKGROUND WALL
   =================================================== */
.section-walls {
  margin-bottom: 100px;
}

.walls-header {
  text-align: center;
  margin-bottom: 40px;
}

.walls-title {
  font-size: 2.3rem;
  font-weight: 300;
  color: #2b2b2b;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.walls-desc {
  font-size: 0.88rem;
  color: #666666;
  line-height: 1.6;
}

.walls-img-wrap {
  width: 100%;
  margin-bottom: 24px;
}

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

.walls-note {
  font-size: 0.82rem;
  color: #777777;
  padding-left: 8px;
}

/* ===================================================
   SECTION 4: DOOR OPENING TYPE (圆图 + 渐变边框)
   =================================================== */
.section-doors {
  width: 100%;
}

.doors-title {
  font-size: 2.3rem;
  font-weight: 300;
  color: #2b2b2b;
  text-align: center;
  margin-bottom: 60px;
  letter-spacing: -0.5px;
}

.doors-grid {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 100px;
  width: 100%;
}

.door-circle-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.door-round-img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  display: block;
}

.door-type-label {
  font-size: 0.95rem;
  color: #444444;
  font-weight: 400;
  text-align: center;
}

/* ===================================================
   RESPONSIVE DESIGN (响应式适配)
   =================================================== */
@media (max-width: 1024px) {
  .section-top {
    flex-direction: column;
    min-height: auto;
    gap: 30px;
  }

  .top-left {
    flex: auto;
    width: 100%;
    gap: 20px;
  }

  .doors-grid {
    gap: 40px;
  }

  .circle-ripple-bg {
    width: 320px;
    height: 320px;
  }

  .circle-gradient-border {
    width: 240px;
    height: 240px;
  }
}

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

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

  .product-title, .colors-title, .walls-title, .doors-title {
    font-size: 1.8rem;
  }

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

  .colors-header {
    position: static;
    padding: 24px 16px 12px 16px;
  }

  .doors-grid {
    flex-direction: column;
    gap: 40px;
  }

  .circle-ripple-bg {
    width: 280px;
    height: 280px;
  }

  .circle-gradient-border {
    width: 220px;
    height: 220px;
  }
}