/* ==========================================================================
   产品详情页 专属样式
   ========================================================================== */

.page-banner-product {
  background: linear-gradient(135deg, #001F3F 0%, #003D7A 50%, #0066CC 100%);
}

.product-detail-section {
  background: #fff;
}

/* ===================== 产品总览 ===================== */
.product-overview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
  margin-bottom: var(--space-20);
}

.product-overview-image {
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, #f5f9ff 0%, #e8f2ff 100%);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  padding: var(--space-6);
}

.product-overview-image img {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
}

.product-overview-tag {
  display: inline-block;
  padding: 4px 12px;
  background-color: rgba(230, 0, 0, 0.1);
  color: var(--color-primary);
  font-size: var(--fs-xs);
  letter-spacing: 1.5px;
  border-radius: 100px;
  margin-bottom: var(--space-3);
  font-weight: var(--fw-medium);
}

.product-overview-info h2 {
  font-size: var(--fs-3xl);
  color: var(--color-text);
  margin-bottom: var(--space-4);
  line-height: 1.3;
}

.product-overview-lead {
  font-size: var(--fs-md);
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-6);
  padding-left: var(--space-4);
  border-left: 3px solid var(--color-primary);
}

.product-overview-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.product-overview-specs .spec-item {
  background: var(--color-bg-soft);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.product-overview-specs .spec-label {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.product-overview-specs .spec-value {
  font-size: var(--fs-base);
  color: var(--color-text);
  font-weight: var(--fw-semibold);
}

.product-overview-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

@media (max-width: 991px) {
  .product-overview { grid-template-columns: 1fr; gap: var(--space-6); }
}

/* ===================== 产品亮点 ===================== */
.product-features-section,
.product-specs-section,
.product-scenarios-section,
.product-interfaces-section,
.product-leds-section,
.product-docs-section {
  margin-bottom: var(--space-20);
}

.product-features-section .section-title-left h2,
.product-specs-section .section-title-left h2,
.product-scenarios-section .section-title-left h2,
.product-interfaces-section .section-title-left h2,
.product-leds-section .section-title-left h2,
.product-docs-section .section-title-left h2 {
  margin-bottom: var(--space-2);
}

.product-features-section .section-title-left p,
.product-specs-section .section-title-left p,
.product-scenarios-section .section-title-left p,
.product-interfaces-section .section-title-left p,
.product-leds-section .section-title-left p,
.product-docs-section .section-title-left p {
  color: var(--color-text-muted);
  font-size: var(--fs-md);
  margin-top: 0;
}

.product-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-8);
}

.product-feature-card {
  background: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.product-feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(to right, var(--color-primary) 0%, var(--color-tech-blue) 100%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.product-feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.product-feature-card:hover::before {
  transform: scaleX(1);
}

.feature-num {
  font-size: 36px;
  font-weight: var(--fw-bold);
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-3);
  font-family: Georgia, serif;
  opacity: 0.6;
}

.product-feature-card h4 {
  font-size: var(--fs-md);
  color: var(--color-text);
  margin-bottom: var(--space-3);
  font-weight: var(--fw-bold);
}

.product-feature-card p {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin: 0;
}

@media (max-width: 991px) {
  .product-features-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .product-features-grid { grid-template-columns: 1fr; }
}

/* ===================== 基本参数表 ===================== */
.product-specs-table {
  background: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: var(--space-8);
  box-shadow: var(--shadow-sm);
}

.specs-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  border-bottom: 1px solid var(--color-border-light);
  transition: background-color var(--transition-fast);
}

.specs-row:last-child {
  border-bottom: none;
}

.specs-row:hover {
  background-color: var(--color-bg-soft);
}

.specs-key {
  padding: var(--space-4) var(--space-6);
  background-color: var(--color-bg-soft);
  color: var(--color-text-secondary);
  font-weight: var(--fw-medium);
  font-size: var(--fs-sm);
  border-right: 1px solid var(--color-border-light);
}

.specs-value {
  padding: var(--space-4) var(--space-6);
  color: var(--color-text);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
}

@media (max-width: 600px) {
  .specs-row { grid-template-columns: 1fr; }
  .specs-key { border-right: none; border-bottom: 1px solid var(--color-border-light); }
}

/* ===================== 应用场景 ===================== */
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-8);
}

.scenario-card {
  background: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  text-align: left;
  transition: all var(--transition-base);
  position: relative;
  cursor: default;
}

.scenario-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(to right, var(--color-primary) 0%, var(--color-tech-blue) 100%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
  z-index: 2;
}

.scenario-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.scenario-card:hover::before {
  transform: scaleX(1);
}

.scenario-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--color-bg-soft);
  position: relative;
}

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

.scenario-card:hover .scenario-image img {
  transform: scale(1.08);
}

.scenario-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 60%, rgba(0, 31, 63, 0.15) 100%);
  pointer-events: none;
}

.scenario-info {
  padding: var(--space-4) var(--space-3);
}

.scenario-info h4 {
  font-size: var(--fs-base);
  color: var(--color-text);
  margin-bottom: 4px;
  font-weight: var(--fw-semibold);
}

.scenario-info p {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.5;
}

@media (max-width: 1199px) {
  .scenarios-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 600px) {
  .scenarios-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-3); }
  .scenario-info { padding: var(--space-3) var(--space-2); }
  .scenario-info h4 { font-size: var(--fs-sm); }
  .scenario-info p { font-size: 11px; }
}

/* ===================== 接口描述 ===================== */
.interfaces-table {
  background: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: var(--space-8);
  box-shadow: var(--shadow-sm);
}

.interfaces-header,
.interfaces-row {
  display: grid;
  grid-template-columns: 100px 1fr 2fr;
}

.interfaces-header {
  background-color: var(--color-primary);
  color: #fff;
  font-weight: var(--fw-bold);
}

.interfaces-header > div {
  padding: var(--space-4) var(--space-5);
  font-size: var(--fs-sm);
}

.interfaces-row {
  border-bottom: 1px solid var(--color-border-light);
  transition: background-color var(--transition-fast);
}

.interfaces-row:last-child {
  border-bottom: none;
}

.interfaces-row:hover {
  background-color: var(--color-bg-soft);
}

.interfaces-row > div {
  padding: var(--space-4) var(--space-5);
  font-size: var(--fs-sm);
  color: var(--color-text);
}

.interfaces-row > div:nth-child(2) {
  font-family: 'Courier New', monospace;
  color: var(--color-primary);
  font-weight: var(--fw-semibold);
}

@media (max-width: 600px) {
  .interfaces-header,
  .interfaces-row { grid-template-columns: 60px 1fr 1.5fr; }
  .interfaces-header > div,
  .interfaces-row > div { padding: var(--space-3) var(--space-3); font-size: var(--fs-xs); }
}

/* ===================== 指示灯 ===================== */
.leds-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-8);
  max-width: 800px;
}

.led-card {
  background: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.led-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.led-icon {
  font-size: 56px;
  margin-bottom: var(--space-4);
  line-height: 1;
}

.led-icon-slow {
  color: #F59E0B;
  animation: ledSlow 2s ease-in-out infinite;
}

.led-icon-on {
  color: #10B981;
  text-shadow: 0 0 12px rgba(16, 185, 129, 0.6);
}

@keyframes ledSlow {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

.led-card h4 {
  font-size: var(--fs-md);
  color: var(--color-text);
  margin-bottom: var(--space-2);
  font-weight: var(--fw-semibold);
}

.led-card p {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  margin: 0;
}

@media (max-width: 600px) {
  .leds-grid { grid-template-columns: 1fr; }
}

/* ===================== 相关资料 ===================== */
.docs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-8);
}

.doc-card {
  background: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: var(--space-6) var(--space-4);
  text-align: center;
  transition: all var(--transition-base);
  text-decoration: none;
  color: inherit;
  display: block;
}

.doc-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
  color: inherit;
}

.doc-icon {
  font-size: 36px;
  margin-bottom: var(--space-3);
}

.doc-card h4 {
  font-size: var(--fs-base);
  color: var(--color-text);
  margin-bottom: var(--space-2);
  font-weight: var(--fw-semibold);
}

.doc-card p {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.4;
}

@media (max-width: 991px) {
  .docs-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .docs-grid { grid-template-columns: 1fr; }
}

/* ===================== CTA ===================== */
.product-cta-section {
  background: linear-gradient(135deg, #050B1A 0%, #0A1832 50%, #0F2A4F 100%);
  color: #fff;
  border-radius: var(--radius-xl);
  padding: var(--space-16) var(--space-8);
  text-align: center;
  position: relative;
  overflow: hidden;
  margin-top: var(--space-12);
}

.product-cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(ellipse at 30% 50%, rgba(0, 200, 255, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 50%, rgba(230, 0, 0, 0.1) 0%, transparent 60%);
}

.product-cta-content {
  position: relative;
  z-index: 1;
}

.product-cta-content h2 {
  color: #fff;
  font-size: var(--fs-3xl);
  margin-bottom: var(--space-3);
}

.product-cta-content p {
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--fs-md);
  margin-bottom: var(--space-6);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.product-cta-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}