/* ========== Product Detail Page Styles ========== */
/* 产品详情页标准模板 */

/* ========== Breadcrumb Bar ========== */
.pd-breadcrumb-bar {
  padding: 20px 0;
  background: #f8f9fa;
  border-bottom: 1px solid #e9ecef;
  margin-top: 64px;
}
.pd-breadcrumb-bar .pc-breadcrumb {
  font-size: 13px;
  color: #868e96;
  margin: 0;
  text-align: center;
}
.pd-breadcrumb-bar .pc-breadcrumb a {
  color: #868e96;
  text-decoration: none;
  transition: color 0.2s;
}
.pd-breadcrumb-bar .pc-breadcrumb a:hover {
  color: var(--color-primary, #033b79);
}

/* ========== Product Carousel (产品轮播) ========== */
.product-carousel {
  width: 100%;
  height: 480px;
  overflow: hidden;
  position: relative;
  background: linear-gradient(135deg, #f5f7fa 0%, #edf1f5 100%);
  margin-top: 64px;
}
.product-carousel::before,
.product-carousel::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 100px;
  z-index: 2;
  pointer-events: none;
}
.product-carousel::before {
  left: 0;
  background: linear-gradient(to right, #f5f7fa, transparent);
}
.product-carousel::after {
  right: 0;
  background: linear-gradient(to left, #f5f7fa, transparent);
}
.carousel-track {
  display: flex;
  gap: 24px;
  height: 100%;
  align-items: center;
  padding: 0 12px;
  will-change: transform;
}
.carousel-card {
  flex: 0 0 350px;
  height: 400px;
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  transition: transform 0.3s, box-shadow 0.3s;
  display: flex;
  flex-direction: column;
}
.carousel-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 36px rgba(0,0,0,0.1);
}
.carousel-card-img {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: #fafbfc;
  overflow: hidden;
}
.carousel-card-img img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.carousel-card:hover .carousel-card-img img {
  transform: scale(1.05);
}
.carousel-card-info {
  padding: 20px 24px;
  border-top: 1px solid var(--line);
}
.carousel-card-info h4 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 16px;
  color: var(--ink);
  margin-bottom: 4px;
}
.carousel-card-info span {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 13px;
  color: var(--muted);
}

/* Carousel Controls */
.carousel-controls {
  position: absolute;
  bottom: 24px;
  right: 40px;
  display: flex;
  gap: 8px;
  z-index: 3;
}
.carousel-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.9);
  border: 1px solid var(--line);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
  backdrop-filter: blur(8px);
}
.carousel-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}
.carousel-btn svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ===== Marquee 持续滚动模式（从左向右，仅 .product-carousel--marquee 启用） ===== */
.product-carousel--marquee .carousel-track {
  /* 位移由 JS rAF 驱动，禁用旧脚本可能残留的 transition */
  transition: none !important;
}
/* 居中焦点状态提示 */
.carousel-dots {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 3;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(8px);
}
.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(3, 59, 121, 0.22);
  transition: width 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              background 0.35s, border-radius 0.35s;
}
.carousel-dot.is-active {
  width: 24px;
  border-radius: 4px;
  background: var(--color-primary, #033b79);
}

/* ========== Product Overview (产品概览) ========== */
.pd-overview {
  max-width: 85%;
  margin: 0 auto;
  padding: 80px 60px;
  display: flex;
  gap: 60px;
  align-items: flex-start;
}
.pd-overview-img {
  flex: 0 0 52%;
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-gray-light);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: zoom-in;
}
.pd-overview-img img {
  max-width: 85%;
  max-height: 85%;
  object-fit: contain;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.pd-overview-img:hover img {
  transform: scale(1.08);
}

/* ========== Product Gallery (详情页产品图轮播) ==========
   容器同时带旧单图类 .pd-overview-img（其固定 4/3 宽高比、85% 图宽、
   hover 放大均为单图设计），组合为轮播时需重置，避免与 main+caption+dots 冲突。 */
.pd-overview-img.pd-ov-gallery {
  flex: 0 0 52%;
  width: 52%;
  aspect-ratio: auto;
  background: transparent;
  overflow: visible;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  gap: 12px;
  cursor: default;
}
.pd-ov-gallery:hover img { transform: none; }
.pd-ov-gallery .pd-gallery-slide img,
.pd-ov-gallery .pd-gallery-slide video {
  max-width: none;
  max-height: none;
}
.pd-gallery-main {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
}
.pd-gallery-slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}
.pd-gallery-slide.is-active {
  opacity: 1;
  pointer-events: auto;
  z-index: 1;
}
.pd-gallery-slide img,
.pd-gallery-slide video {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.pd-gallery-empty {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #adb5bd;
}

/* 图注：位于主图下方，不遮挡图片 */
.pd-gallery-caption {
  text-align: center;
  font-size: 13px;
  line-height: 1.6;
  color: #6b7280;
  padding: 0 8px;
}

/* 圆点指示器（点状轮播焦点） */
.pd-gallery-dots {
  display: flex;
  gap: 8px;
  justify-content: center;
  align-items: center;
}
.pd-gallery-dot {
  width: 8px;
  height: 8px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: rgba(15, 23, 42, 0.22);
  cursor: pointer;
  transition: all 0.25s ease;
}
.pd-gallery-dot:hover { background: rgba(15, 23, 42, 0.45); }
.pd-gallery-dot.is-active {
  width: 22px;
  border-radius: 5px;
  background: var(--color-primary);
}
.pd-overview-info {
  flex: 1;
  padding-top: 8px;
}
.pd-overview-info .pd-brand {
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.pd-overview-info h1 {
  font-family: var(--font-body);
  font-weight: var(--fw-title);
  font-size: 34px;
  line-height: 1.3;
  color: var(--ink);
  margin-bottom: 16px;
}
.pd-overview-info .pd-desc {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 15px;
  line-height: 1.8;
  color: var(--body);
  margin-bottom: 28px;
}
.pd-meta-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
}
.pd-meta-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--body);
}
.pd-meta-item .meta-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.pd-meta-item .meta-icon svg {
  width: 18px;
  height: 18px;
  stroke: var(--color-primary);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.pd-meta-item .meta-label {
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 1px;
}
.pd-meta-item .meta-value {
  font-weight: 500;
  color: var(--ink);
  font-size: 14px;
}
.pd-actions {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}

/* ========== Highlights Strip (亮点数据条) ========== */
.pd-highlights {
  max-width: 85%;
  margin: 0 auto;
  padding: 0 60px 80px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.pd-highlights-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.pd-highlight-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px 24px;
  text-align: center;
  transition: all 0.3s;
}
.pd-highlight-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 8px 28px rgba(0,121,255,0.08);
  transform: translateY(-3px);
}
.pd-highlight-card .hl-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--bg-soft);
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.pd-highlight-card .hl-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-primary);
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.pd-highlight-card .hl-value {
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 24px;
  color: var(--ink);
  margin-bottom: 4px;
}
.pd-highlight-card .hl-label {
  font-size: 13px;
  color: var(--muted);
}

/* ========== Features (产品特点) ========== */
.pd-features {
  background: var(--color-gray-light);
  padding: 80px 0;
}
.pd-features-inner {
  max-width: 85%;
  margin: 0 auto;
  padding: 0 60px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.pd-section-header {
  text-align: center;
  margin-bottom: 48px;
}
.pd-section-header .section-label {
  font-family: var(--font-en);
  font-size: 13px;
  color: var(--muted);
  font-weight: 400;
  margin-bottom: 8px;
}
.pd-section-header h2 {
  font-family: var(--font-body);
  font-weight: var(--fw-title);
  font-size: 30px;
  color: var(--ink);
}
.pd-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.pd-feature-card {
  background: #fff;
  border-radius: 12px;
  padding: 36px 28px;
  transition: all 0.3s;
  border: 1px solid transparent;
}
.pd-feature-card:hover {
  box-shadow: 0 10px 34px rgba(0,0,0,0.06);
  transform: translateY(-4px);
  border-color: var(--line);
}
.pd-feature-card .feat-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.pd-feature-card .feat-icon svg {
  width: 26px;
  height: 26px;
  stroke: var(--color-primary);
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.pd-feature-card h4 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
  margin-bottom: 8px;
}
.pd-feature-card p {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 14px;
  line-height: 1.7;
  color: #888;
}

/* ========== Specifications (技术参数 - 竖列列表) ========== */
.pd-specs {
  max-width: 85%;
  margin: 0 auto;
  padding: 80px 60px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.pd-specs-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.pd-spec-row {
  display: flex;
  align-items: baseline;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  transition: background 0.2s;
}
.pd-spec-row:first-child {
  border-top: 1px solid var(--line);
}
.pd-spec-row:hover {
  background: var(--color-gray-light);
  padding-left: 12px;
  padding-right: 12px;
  margin-left: -12px;
  margin-right: -12px;
  border-radius: 8px;
}
.pd-spec-name {
  flex: 0 0 220px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
}
.pd-spec-value {
  flex: 1;
  font-size: 14px;
  color: var(--body);
  line-height: 1.6;
}
.pd-spec-note {
  flex: 0 0 160px;
  font-size: 12px;
  color: var(--muted);
  text-align: right;
}

/* ========== Applications (应用场景) ========== */
.pd-applications {
  background: var(--color-gray-light);
  padding: 80px 0;
}
.pd-applications-inner {
  max-width: 85%;
  margin: 0 auto;
  padding: 0 60px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.pd-apps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.pd-app-card {
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  min-height: 240px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  cursor: pointer;
  transition: transform 0.3s;
}
.pd-app-card:hover { transform: translateY(-4px); }
.pd-app-card .app-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.pd-app-card:hover .app-bg { transform: scale(1.08); }
.pd-app-card .app-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.65) 0%, rgba(0,0,0,0.1) 50%, transparent 100%);
}
.pd-app-card .app-content {
  position: relative;
  z-index: 2;
}
.pd-app-card .app-content h5 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 16px;
  color: #fff;
  margin-bottom: 4px;
}
.pd-app-card .app-content span {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 13px;
  color: rgba(255,255,255,0.75);
}

/* ========== Documents (配套资源) ========== */
.pd-documents {
  max-width: 85%;
  margin: 0 auto;
  padding: 80px 60px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.pd-docs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.pd-doc-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  border: 1px solid var(--line);
  border-radius: 12px;
  transition: all 0.3s;
  text-decoration: none;
  cursor: pointer;
}
.pd-doc-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 6px 20px rgba(0,121,255,0.08);
  transform: translateY(-2px);
}
.pd-doc-card .doc-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.pd-doc-card .doc-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--color-primary);
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.pd-doc-card .doc-info h5 {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 2px;
}
.pd-doc-card .doc-info span {
  font-size: 12px;
  color: var(--muted);
}
.pd-doc-card .doc-info .doc-meta {
  display: inline-block;
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 4px;
}
.pd-doc-card .doc-info .doc-desc {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
  margin-top: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.pd-doc-card .doc-action {
  margin-left: auto;
  flex-shrink: 0;
}
.pd-doc-card .doc-download-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--color-primary);
  color: #fff;
  font-size: 12px;
  font-weight: 500;
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.3s;
  white-space: nowrap;
}
.pd-doc-card .doc-download-btn:hover {
  background: var(--navy);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,121,255,0.25);
}
.pd-doc-card .doc-download-btn svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.pd-doc-card .doc-note {
  font-size: 11px;
  color: var(--muted);
  font-style: italic;
}
.pd-docs-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--muted);
}
.pd-docs-empty svg {
  width: 48px;
  height: 48px;
  stroke: var(--line);
  fill: none;
  stroke-width: 1.5;
  margin-bottom: 16px;
}
.pd-docs-empty p {
  font-size: 15px;
  margin-bottom: 8px;
  color: var(--ink);
}
.pd-docs-empty span {
  font-size: 13px;
}
.pd-docs-empty a {
  color: var(--color-primary);
  text-decoration: none;
}
.pd-docs-subtitle {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin: 32px 0 16px;
  padding-left: 12px;
  border-left: 3px solid var(--color-primary);
}

/* ========== Related Products (相关产品) ========== */
.pd-related {
  background: var(--color-gray-light);
  padding: 80px 0;
}
.pd-related-inner {
  max-width: 85%;
  margin: 0 auto;
  padding: 0 60px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.pd-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.pd-related-card {
  background: #fff;
  border-radius: 12px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: all 0.3s;
  border: 1px solid var(--line);
  text-decoration: none;
}
.pd-related-card:hover {
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
  transform: translateY(-4px);
}
.pd-related-card .rel-img {
  width: 100%;
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.pd-related-card .rel-img img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}
.pd-related-card .rel-name {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 16px;
  color: var(--ink);
  margin-bottom: 6px;
}
.pd-related-card .rel-desc {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}

/* ========== CTA Banner (底部咨询横幅) ========== */
.pd-cta {
  max-width: 85%;
  margin: 0 auto;
  padding: 80px 60px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.pd-cta-inner {
  background: linear-gradient(135deg, var(--navy) 0%, #1a3a5c 100%);
  border-radius: 16px;
  padding: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  position: relative;
  overflow: hidden;
}
.pd-cta-inner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(255,255,255,0.03);
}
.pd-cta-text h3 {
  font-family: var(--font-body);
  font-weight: var(--fw-title);
  font-size: 28px;
  color: #fff;
  margin-bottom: 10px;
}
.pd-cta-text p {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 15px;
  color: rgba(255,255,255,0.7);
  line-height: 1.6;
}
.pd-cta-btns {
  display: flex;
  gap: 12px;
  flex-shrink: 0;
  position: relative;
  z-index: 2;
}
.pd-cta-btns .btn-white {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  color: var(--ink);
  font-size: 14px;
  font-weight: 500;
  padding: 14px 32px;
  border-radius: 10px;
  text-decoration: none;
  transition: all 0.3s;
}
.pd-cta-btns .btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}
.pd-cta-btns .btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  padding: 14px 32px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.3);
  text-decoration: none;
  transition: all 0.3s;
}
.pd-cta-btns .btn-ghost:hover {
  border-color: #fff;
  transform: translateY(-2px);
}

/* ========== Responsive ========== */
@media (max-width: 1280px) {
  .pd-overview { padding: 60px 40px; gap: 40px; }
  .pd-highlights, .pd-specs, .pd-documents, .pd-cta { padding-left: 40px; padding-right: 40px; }
  .pd-features-inner, .pd-applications-inner, .pd-related-inner { padding-left: 40px; padding-right: 40px; }
  .pd-apps-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 980px) {
  .pd-overview { flex-direction: column; }
  .pd-overview-img { flex: none; width: 100%; }
  .pd-overview-img.pd-ov-gallery { flex: none; width: 100%; }
  .pd-highlights-grid { grid-template-columns: repeat(2, 1fr); }
  .pd-features-grid { grid-template-columns: repeat(2, 1fr); }
  .pd-related-grid { grid-template-columns: repeat(2, 1fr); }
  .pd-docs-grid { grid-template-columns: repeat(2, 1fr); }
  .pd-industry-grid { grid-template-columns: repeat(3, 1fr); }
  .pd-spec-name { flex: 0 0 160px; }
  .pd-spec-note { display: none; }
  .pd-cta-inner { flex-direction: column; text-align: center; padding: 40px; }
  .carousel-card { flex: 0 0 280px; height: 360px; }
}
@media (max-width: 768px) {
  .pd-overview { padding: 40px 24px; }
  .pd-highlights, .pd-specs, .pd-documents, .pd-cta { padding-left: 24px; padding-right: 24px; }
  .pd-features-inner, .pd-applications-inner, .pd-related-inner { padding-left: 24px; padding-right: 24px; }
  .pd-overview-info h1 { font-size: 26px; }
  .pd-highlights-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .pd-features-grid { grid-template-columns: 1fr; }
  .pd-apps-grid { grid-template-columns: 1fr; }
  .pd-industry-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .pd-related-grid { grid-template-columns: 1fr; }
  .pd-docs-grid { grid-template-columns: 1fr; }
  .pd-spec-row { flex-direction: column; gap: 4px; }
  .pd-spec-name { flex: none; }
  .pd-cta-btns { flex-direction: column; width: 100%; }
  .pd-cta-btns a { text-align: center; justify-content: center; }
  .product-carousel { height: 380px; }
  .carousel-card { flex: 0 0 240px; height: 320px; }
}

/* ========== 产品系列图库 Product Gallery ========== */
.pd-gallery {
  max-width: 85%;
  margin: 0 auto;
  padding: 80px 60px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.pd-gallery-group { margin-bottom: 48px; }
.pd-gallery-group:last-child { margin-bottom: 0; }
.pd-gallery-cat {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 18px;
  color: var(--navy);
  margin: 0 0 20px;
  padding-left: 12px;
  border-left: 3px solid var(--color-primary);
}
.pd-gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.pd-gallery-item {
  background: #fff;
  border: 1px solid #eef0f4;
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s;
  text-align: center;
}
.pd-gallery-item:hover {
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
  transform: translateY(-3px);
  border-color: var(--color-primary);
}
.pd-gallery-img {
  background: #fafbfc;
  padding: 20px;
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.pd-gallery-img img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}
.pd-gallery-name {
  padding: 12px 10px 14px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  color: var(--ink);
}
@media (max-width: 768px) {
  .pd-gallery { padding: 40px 24px; }
  .pd-gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .pd-gallery-img { height: 140px; }
}

/* ========== Intro (产品概述长文) ========== */
.pd-intro {
  background: var(--color-gray-light);
  padding: 80px 0;
}
.pd-intro-inner {
  max-width: 85%;
  margin: 0 auto;
  padding: 0 60px;
}
.pd-intro-body {
  max-width: 960px;
  margin: 0 auto;
}
.pd-intro-body p {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 15px;
  line-height: 2;
  color: var(--ink-dim, #555A63);
  margin: 0 0 18px;
  text-align: justify;
}
.pd-intro-body h3 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
  margin: 28px 0 12px;
}

/* ========== Spec group (参数分组标题) ========== */
.pd-spec-group {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 14px;
  color: var(--color-primary);
  letter-spacing: 0.5px;
  padding: 22px 0 8px;
  border-bottom: 2px solid var(--color-primary);
  margin-bottom: 2px;
}

/* ========== Variants (设计变型与配置) ========== */
.pd-variants {
  padding: 80px 0;
}
.pd-variants-inner {
  max-width: 85%;
  margin: 0 auto;
  padding: 0 60px;
}
.pd-variants-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px 24px;
}
.pd-variant-card {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  transition: all 0.3s;
}
.pd-variant-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 8px 24px rgba(20,95,251,0.08);
  transform: translateY(-2px);
}
.pd-variant-card .variant-check {
  flex: 0 0 24px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-primary-alpha);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}
.pd-variant-card .variant-check svg {
  width: 13px;
  height: 13px;
}
.pd-variant-card h5 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 15px;
  color: var(--ink);
  margin-bottom: 4px;
}
.pd-variant-card p {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  margin: 0;
}
.pd-variants-note {
  margin-top: 24px;
  font-size: 13px;
  color: var(--muted);
  text-align: center;
  line-height: 1.7;
}

/* ========== Industry cards (应用领域-行业场景卡片) ========== */
.pd-industry-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.pd-industry-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 2px 12px rgba(15, 40, 70, 0.06);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.pd-industry-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 14px 30px rgba(15, 40, 70, 0.14);
}
.pd-industry-card .ind-img {
  aspect-ratio: 3 / 2;
  overflow: hidden;
}
.pd-industry-card .ind-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}
.pd-industry-card:hover .ind-img img {
  transform: scale(1.07);
}
/* 行业图缺失时的兜底：品牌渐变 + 行业名 */
.pd-industry-card .ind-img.ind-img-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0b5a9e 0%, #1a7bd0 60%, #46b5e8 100%);
  position: relative;
}
.pd-industry-card .ind-img.ind-img-fallback::after {
  content: attr(data-name);
  color: #fff;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 1px;
  text-align: center;
  padding: 0 14px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}
.pd-industry-card .ind-name {
  padding: 14px 12px;
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}
.pd-scenario-wrap {
  margin-top: 42px;
}
.pd-scenario-label {
  text-align: center;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 20px;
}

/* ========== Application tags (应用领域标签云) ========== */
.pd-app-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}
.pd-app-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  transition: all 0.25s;
}
.pd-app-tag svg {
  width: 15px;
  height: 15px;
  color: var(--color-primary);
}
.pd-app-tag:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-alpha);
  color: var(--color-primary);
  transform: translateY(-2px);
}

@media (max-width: 1024px) {
  .pd-variants-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .pd-intro, .pd-variants, .pd-applications { padding: 56px 0; }
  .pd-intro-inner, .pd-variants-inner { padding: 0 24px; }
  .pd-intro-body p { font-size: 14px; line-height: 1.9; }
  .pd-variants-grid { grid-template-columns: 1fr; }
  .pd-spec-name { flex: 0 0 130px; }
  .pd-spec-note { display: none; }
}

/* ========== Performance Range (性能范围独立区块) ========== */
.pd-perfchart {
  padding: 80px 0;
}
.pd-perfchart-inner {
  max-width: 85%;
  margin: 0 auto;
  padding: 0 60px;
  display: flex;
  flex-direction: column;
}
.pd-perfchart-figure {
  margin: 0 auto;
  width: 100%;
  max-width: 1100px;
}
.pd-perfchart-figure img {
  display: block;
  width: 100%;
  height: auto;
  box-sizing: border-box;
  padding: 18px;
  background: #fff;
  border: 1px solid #eef0f4;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.06);
}
.pd-perfchart-figure figcaption { margin-top: 22px; text-align: center; }
.pd-perfchart-figure figcaption p {
  max-width: 880px;
  margin: 0 auto 6px;
  font-size: 13.5px;
  line-height: 1.9;
  color: #6b7280;
}
@media (max-width: 768px) {
  .pd-perfchart { padding: 56px 0; }
  .pd-perfchart-inner { padding: 0 24px; }
  .pd-perfchart-figure img { padding: 8px; }
}

/* ========== Selection Table (选型矩阵：Tab + 规格表 + 搜索 + 折叠 + 下载) ========== */
.pd-selection {
  padding: 80px 0;
}
.pd-selection-inner {
  max-width: 85%;
  margin: 0 auto;
  padding: 0 60px;
}
.pd-selection-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.pd-selection-tabs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.pd-sel-tab {
  padding: 9px 20px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--body);
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font-body);
}
.pd-sel-tab:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.pd-sel-tab.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}
.pd-selection-search {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0 14px;
  transition: border-color 0.2s;
}
.pd-selection-search:focus-within {
  border-color: var(--color-primary);
}
.pd-selection-search svg {
  width: 16px;
  height: 16px;
  color: var(--muted);
  flex: 0 0 auto;
}
.pd-selection-search input {
  border: none;
  outline: none;
  padding: 10px 0;
  font-size: 13.5px;
  width: 190px;
  background: transparent;
  color: var(--ink);
  font-family: var(--font-body);
}
.pd-selection-scroll {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 10px 30px rgba(0,0,0,0.05);
  -webkit-overflow-scrolling: touch;
}
.pd-selection-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  min-width: 720px;
}
.pd-selection-table th {
  background: #f2f5fa;
  color: var(--ink);
  font-weight: 600;
  padding: 14px 16px;
  text-align: left;
  white-space: nowrap;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
}
.pd-selection-table td {
  padding: 12px 16px;
  color: var(--body);
  border-bottom: 1px solid #f0f2f5;
  white-space: nowrap;
}
.pd-selection-table tbody tr:last-child td {
  border-bottom: none;
}
.pd-selection-table tbody tr:hover td {
  background: var(--color-primary-alpha);
}
.pd-selection-table tr.is-zebra td {
  background: #fafbfd;
}
.pd-selection-table tr.is-zebra:hover td,
.pd-selection-table tbody tr:hover td {
  background: var(--color-primary-alpha);
}
/* 首列机座号横向滚动时吸左 */
.pd-sel-sticky {
  position: sticky;
  left: 0;
  z-index: 2;
}
th.pd-sel-sticky {
  z-index: 3;
  background: #e9eef7;
}
td.pd-sel-sticky {
  background: #fff;
  font-weight: 600;
  color: var(--ink);
}
tr.is-zebra td.pd-sel-sticky {
  background: #fafbfd;
}
.pd-selection-table tbody tr:hover td.pd-sel-sticky {
  background: var(--color-primary-alpha);
}
.pd-selection-empty {
  padding: 48px 20px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}
.pd-selection-foot {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 22px;
}
.pd-selection-note {
  flex: 1 1 280px;
  font-size: 12.5px;
  color: var(--muted);
  line-height: 1.7;
}
.pd-selection-more {
  margin: 0 auto;
  padding: 10px 26px;
  background: #fff;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font-body);
}
.pd-selection-more:hover {
  background: var(--color-primary);
  color: #fff;
}
.pd-selection-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  padding: 11px 22px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 500;
  transition: all 0.2s;
  white-space: nowrap;
}
.pd-selection-download:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
  color: #fff;
}
.pd-selection-download svg {
  width: 15px;
  height: 15px;
}

/* ========== Certifications (认证与标准) ========== */
.pd-certifications {
  padding: 80px 0;
}
.pd-certifications-inner {
  max-width: 85%;
  margin: 0 auto;
  padding: 0 60px;
}
.pd-cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.pd-cert-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 10px;
  padding: 30px 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  transition: all 0.25s;
  text-decoration: none;
}
.pd-cert-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 8px 24px rgba(20,95,251,0.08);
  transform: translateY(-3px);
}
.pd-cert-badge {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--color-primary-alpha);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 4px;
}
.pd-cert-badge svg {
  width: 25px;
  height: 25px;
}
.pd-cert-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.5;
}
.pd-cert-standard {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
}

/* ========== Downloads (资料下载) ========== */
.pd-downloads {
  padding: 80px 0;
}
.pd-downloads-inner {
  max-width: 85%;
  margin: 0 auto;
  padding: 0 60px;
}
.pd-download-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.pd-download-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  transition: all 0.2s;
  text-decoration: none;
}
.pd-download-item:hover {
  border-color: var(--color-primary);
  box-shadow: 0 8px 24px rgba(20,95,251,0.08);
  transform: translateY(-2px);
}
.pd-dl-icon {
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--bg-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.pd-dl-icon svg {
  width: 22px;
  height: 22px;
}
.pd-dl-info {
  flex: 1;
  min-width: 0;
}
.pd-dl-title {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink);
}
.pd-dl-meta {
  font-size: 12px;
  color: var(--muted);
  margin-top: 3px;
}
.pd-dl-btn {
  flex: 0 0 auto;
  padding: 8px 20px;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.2s;
  white-space: nowrap;
}
.pd-download-item:hover .pd-dl-btn {
  background: var(--color-primary);
  color: #fff;
}

/* ========== Pairing reason (配套产品推荐理由) ========== */
.pd-related-card .rel-reason {
  font-size: 12.5px;
  color: var(--color-primary);
  line-height: 1.6;
}

@media (max-width: 1024px) {
  .pd-cert-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .pd-selection, .pd-certifications, .pd-downloads { padding: 56px 0; }
  .pd-selection-inner, .pd-certifications-inner, .pd-downloads-inner { padding: 0 24px; }
  .pd-selection-toolbar { flex-direction: column; align-items: stretch; }
  .pd-selection-search { width: 100%; }
  .pd-selection-search input { width: 100%; }
  .pd-selection-download { margin-left: 0; width: 100%; justify-content: center; }
  .pd-selection-table { font-size: 12.5px; min-width: 640px; }
  .pd-cert-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
}