/* ===================================================
   MANUFACTURE STYLESHEET (manufacture.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: #1a1a1a;
}

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

/* 主容器 */
.manufacture-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 90px 30px 120px 30px;
}

/* 头部主标题与居中分割线 */
.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-title {
  font-size: 2.3rem;
  font-weight: 300;
  color: #2b2b2b;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.center-gradient-divider {
  position: relative;
  width: 100%;
  height: 1px;
  background-color: #eaedf1;
  margin: 0 auto;
}

.center-gradient-divider::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -1.5px;
  transform: translateX(-50%);
  width: 120px;
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(90deg, #c81e3a 0%, #5b1a7d 50%, #1b2685 100%);
}

/* ===================================================
   SECTION 1: ULTIMATE MANUFACTURING
   =================================================== */
.manufacture-section {
  margin-bottom: 110px;
}

.hero-card {
  width: 100%;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
  margin-bottom: 50px;
}

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

/* 两列四行数据网格 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  column-gap: 80px;
  row-gap: 0;
  width: 100%;
  margin-bottom: 50px;
}

.stat-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0;
  border-bottom: 1px solid #eaedf1;
}

.stat-text {
  flex: 1;
}

.stat-value {
  font-size: 1.65rem;
  font-weight: 500;
  color: #222222;
  line-height: 1.25;
  margin-bottom: 4px;
  letter-spacing: -0.3px;
}

.stat-label {
  font-size: 0.85rem;
  color: #666666;
  font-weight: 300;
}

.stat-icon {
  flex: 0 0 38px;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: 20px;
}

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

/* 水平三张图片 */
.three-photos-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  width: 100%;
}

.photo-card {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

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

/* ===================================================
   SECTION 2: INTELLIGENT MANUFACTURING STRENGTH
   =================================================== */
.strength-section {
  width: 100%;
}

.strength-title {
  font-size: 2.3rem;
  font-weight: 300;
  color: #2b2b2b;
  text-align: center;
  margin-bottom: 40px;
  letter-spacing: -0.5px;
}

/* 水平两张生产实景图 */
.two-photos-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  width: 100%;
  margin-bottom: 60px;
}

.strength-photo-card {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

/* 水平 4 个圆形 border 容器 */
.circles-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  width: 100%;
}

.circle-card {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  border: 1.5px solid transparent;
  background: 
    linear-gradient(#ffffff, #ffffff) padding-box,
    linear-gradient(135deg, #c81e3a 0%, #681977 50%, #1b2685 100%) border-box;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 20px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.04);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.circle-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.08);
}

.circle-icon-box {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
}

.circle-icon-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
}

.circle-title {
  font-size: 1.25rem;
  font-weight: 500;
  color: #222222;
  margin-bottom: 4px;
}

.circle-sub {
  font-size: 0.78rem;
  color: #666666;
  font-weight: 300;
  line-height: 1.35;
}

/* ===================================================
   RESPONSIVE DESIGN (响应式适配)
   =================================================== */
@media (max-width: 1100px) {
  .stats-grid {
    column-gap: 40px;
  }

  .circles-row {
    gap: 16px;
  }
}

@media (max-width: 850px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .three-photos-row {
    grid-template-columns: 1fr;
  }

  .two-photos-row {
    grid-template-columns: 1fr;
  }

  .circles-row {
    grid-template-columns: repeat(2, 1fr);
    max-width: 520px;
    margin: 0 auto;
    gap: 24px;
  }
}

@media (max-width: 600px) {
  .hero-banner {
    height: 70vh;
  }

  .manufacture-container {
    padding: 50px 16px 80px 16px;
  }

  .section-title, .strength-title {
    font-size: 1.8rem;
  }

  .stat-value {
    font-size: 1.35rem;
  }

  .stat-label {
    font-size: 0.78rem;
  }

  .circles-row {
    grid-template-columns: 1fr;
    max-width: 240px;
  }
}