/* ==========================================================================
   Page: About Us (page-about.css) - 高端工业商务层级排版
   ========================================================================== */

.about-section-wrap {
  padding: 70px 0;
}

.about-section-wrap.bg-alt {
  background-color: #f8fafc;
  border-top: 1px solid #e2e8f0;
  border-bottom: 1px solid #e2e8f0;
}

/* 1. 图文介绍区 */
.about-hero-split {
  display: grid;
  grid-template-columns: 1fr 1.08fr;
  gap: 50px;
  align-items: center;
}

.about-photo-wrapper {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.12);
}

.about-photo-wrapper img {
  width: 100%;
  height: 100%;
  min-height: 420px;
  object-fit: cover;
  display: block;
}

.about-experience-badge {
  position: absolute;
  bottom: 20px;
  right: 20px;
  background: rgba(8, 75, 138, 0.92);
  backdrop-filter: blur(8px);
  color: #ffffff;
  padding: 14px 20px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  display: flex;
  align-items: center;
  gap: 12px;
}

.about-experience-badge i {
  font-size: 28px;
  color: #38bdf8;
}

.about-experience-badge .badge-text strong {
  display: block;
  font-size: 18px;
  font-weight: 900;
  line-height: 1.1;
}

.about-experience-badge .badge-text span {
  font-size: 11px;
  color: #cbd5e1;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.about-text-wrapper .section-sub-title {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: #116eb8;
  letter-spacing: 2px;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.about-text-wrapper .section-main-title {
  font-size: 32px;
  font-weight: 800;
  color: #0f172a;
  line-height: 1.25;
  margin-bottom: 18px;
}

.about-lead-p {
  font-size: 15px;
  color: #334155;
  line-height: 1.8;
  margin-bottom: 14px;
  font-weight: 500;
}

.about-sub-p {
  font-size: 14px;
  color: #64748b;
  line-height: 1.75;
  margin-bottom: 24px;
}

.about-highlights-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 20px;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  color: #1e293b;
  background: #f8fafc;
  padding: 10px 14px;
  border-radius: 6px;
  border: 1px solid #e2e8f0;
}

.highlight-item i {
  color: #28a745;
  font-size: 15px;
  flex-shrink: 0;
}

/* 2. 核心实力数字 Banner (深海蓝全宽/容器设计) */
.about-stats-banner {
  background: linear-gradient(135deg, #073c6e 0%, #0c5696 100%);
  border-radius: 12px;
  padding: 50px 40px;
  box-shadow: 0 16px 40px rgba(7, 60, 110, 0.22);
}

.stats-flex-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.stat-box {
  text-align: center;
  position: relative;
}

.stat-box:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -15px;
  top: 15%;
  height: 70%;
  width: 1px;
  background: rgba(255, 255, 255, 0.15);
}

.stat-icon {
  font-size: 26px;
  color: #38bdf8;
  margin-bottom: 10px;
}

.stat-number {
  font-size: 40px;
  font-weight: 900;
  color: #ffffff;
  line-height: 1;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.stat-label {
  font-size: 13px;
  font-weight: 600;
  color: #cbd5e1;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* 3. 核心制造与工程能力 / Why Choose Us 网格 (参考 xinda 3 列高质感卡片) */
.section-center-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 45px;
}

.section-center-head .section-sub-title {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: #116eb8;
  letter-spacing: 2px;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.section-center-head .section-main-title {
  font-size: 30px;
  font-weight: 800;
  color: #0f172a;
  line-height: 1.3;
  margin-bottom: 10px;
}

.section-lead-desc {
  font-size: 15px;
  color: #64748b;
  line-height: 1.6;
  margin: 0;
}

.about-inner-lead-title {
  font-size: 22px;
  font-weight: 800;
  color: #0f172a;
  line-height: 1.35;
  margin-bottom: 16px;
}

/* Why Choose Us 3 列卡片 */
.about-why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.why-choose-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 36px 28px;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.04);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.why-choose-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #116eb8, #38bdf8);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.why-choose-card:hover {
  transform: translateY(-5px);
  border-color: #116eb8;
  box-shadow: 0 14px 32px rgba(17, 110, 184, 0.12);
}

.why-choose-card:hover::before {
  opacity: 1;
}

.why-icon-box {
  width: 56px;
  height: 56px;
  border-radius: 10px;
  background: #e0f2fe;
  color: #0284c7;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
}

.why-card-title {
  font-size: 19px;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 12px;
  line-height: 1.35;
}

.why-card-desc {
  font-size: 14px;
  color: #64748b;
  line-height: 1.7;
  margin: 0;
}

/* 4. Product Portfolio 4 列产品线网格 */
.about-lines-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.line-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 30px 22px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.03);
  transition: all 0.25s ease;
  position: relative;
  display: flex;
  flex-direction: column;
}

.line-card:hover {
  transform: translateY(-4px);
  border-color: #28a745;
  box-shadow: 0 12px 28px rgba(40, 167, 69, 0.12);
}

.line-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  background: #f0fdf4;
  color: #16a34a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
}

.line-card-title {
  font-size: 17px;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 10px;
  line-height: 1.35;
}

.line-card-desc {
  font-size: 13.5px;
  color: #64748b;
  line-height: 1.65;
  margin: 0;
}

/* 5. Explore Our Facility 3 列实景卡片 (参考 xinda) */
.about-facility-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.facility-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.04);
  transition: all 0.3s ease;
}

.facility-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 36px rgba(15, 23, 42, 0.1);
  border-color: #cbd5e1;
}

.facility-img-box {
  width: 100%;
  height: 220px;
  overflow: hidden;
}

.facility-img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

.facility-card:hover .facility-img-box img {
  transform: scale(1.06);
}

.facility-info {
  padding: 22px 24px;
}

.facility-info h4 {
  font-size: 18px;
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 8px 0;
}

.facility-info p {
  font-size: 13.5px;
  color: #64748b;
  line-height: 1.65;
  margin: 0;
}

/* 响应式断点 */
@media (max-width: 1024px) {
  .about-hero-split {
    grid-template-columns: 1fr;
  }
  .stats-flex-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 35px 20px;
  }
  .stat-box:not(:last-child)::after {
    display: none;
  }
  .about-why-grid,
  .about-facility-grid {
    grid-template-columns: 1fr;
  }
  .about-lines-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .about-highlights-grid {
    grid-template-columns: 1fr;
  }
  .stats-flex-row {
    grid-template-columns: 1fr;
  }
  .about-lines-grid {
    grid-template-columns: 1fr;
  }
}