/* ===== CSS Variables / Design Tokens ===== */
:root {
  --color-primary: #1a56db;
  --color-primary-hover: #1447b8;
  --color-primary-light: rgba(26, 86, 219, 0.08);
  --color-primary-lighter: rgba(26, 86, 219, 0.04);
  --color-secondary: #0e3a8c;
  --color-accent: #f59e0b;
  --color-accent-hover: #d97706;
  --color-bg: #ffffff;
  --color-surface: #f8fafc;
  --color-surface-alt: #f1f5f9;
  --color-text: #1e293b;
  --color-text-secondary: #475569;
  --color-muted: #64748b;
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-display: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;

  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 22px;
  --font-size-2xl: 28px;
  --font-size-3xl: 36px;
  --font-size-4xl: 48px;
  --font-size-5xl: 64px;

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.2;
  --line-height-snug: 1.3;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.6;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 20px rgba(26, 86, 219, 0.15);

  --container-max: 1400px;
  --container-padding: 24px;
  --section-spacing: 100px;
  --grid-gap: 24px;

  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  --header-height: 80px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

ul, ol {
  list-style: none;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

/* ===== Utility Classes ===== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section-padding {
  padding: var(--section-spacing) 0;
}

.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }
.text-muted { color: var(--color-muted); }
.text-accent { color: var(--color-accent); }

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.section-label::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: 16px;
  color: var(--color-text);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-muted);
  max-width: 640px;
  margin: 0 auto 48px;
  line-height: var(--line-height-relaxed);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  cursor: pointer;
  white-space: nowrap;
  border: none;
  line-height: 1;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(26, 86, 219, 0.3);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 4px 16px rgba(26, 86, 219, 0.4);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-1px);
}

.btn-white {
  background: #fff;
  color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.btn-white:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
}

.btn-lg {
  padding: 18px 40px;
  font-size: var(--font-size-lg);
  border-radius: var(--radius-md);
}

.btn-sm {
  padding: 10px 20px;
  font-size: var(--font-size-sm);
}

.btn-arrow::after {
  content: '→';
  transition: transform var(--transition-fast);
}

.btn-arrow:hover::after {
  transform: translateX(4px);
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  transition: all var(--transition-normal);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
}

.header.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.header-logo img {
  height: 44px;
  width: auto;
}

.header-logo-text {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  letter-spacing: 1px;
}

.header-logo-text span {
  color: var(--color-primary);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.header-nav a {
  padding: 8px 18px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
}

.header-nav a:hover,
.header-nav a.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-phone {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.header-phone svg {
  color: var(--color-primary);
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}

.mobile-toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  min-height: 100vh;
  overflow: visible;
  background: linear-gradient(180deg, #1a2e1a 0%, #2d4a2d 30%, #3a5f3a 60%, #4a7a5a 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  display: none;
}

.hero-content {
  position: relative;
  z-index: 3;
  padding: 100px 0 0 0;
  text-align: center;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-text-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding-bottom: 40px;
}

.hero-title {
  font-size: 60px;
  font-weight: var(--font-weight-bold);
  color: #fff;
  line-height: 1.2;
  margin-bottom: 24px;
  max-width: 1100px;
  letter-spacing: 4px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  display: flex;
  gap: 48px;
  justify-content: center;
  margin-bottom: 24px;
}

.hero-subtitle span {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: #fff;
  text-shadow: 0 1px 10px rgba(0, 0, 0, 0.3);
}

.hero-desc {
  font-size: var(--font-size-base);
  color: rgba(255, 255, 255, 0.85);
  max-width: 700px;
  margin-bottom: 32px;
  line-height: var(--line-height-relaxed);
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

.hero-advantage-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  width: 100%;
  max-width: 1200px;
  margin-top: auto;
  margin-bottom: -90px;
  position: relative;
  z-index: 10;
}

.hero-advantage-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
  border-radius: 12px;
  padding: 28px 24px;
  text-align: left;
  transition: all 0.3s ease;
}

.hero-advantage-card:hover {
  background: #fff;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
  transform: translateY(-3px);
}

.hero-advantage-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  border-radius: 10px;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.hero-advantage-title {
  font-size: 18px;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 10px;
}

.hero-advantage-desc {
  font-size: 13px;
  color: #64748b;
  line-height: 1.7;
  margin: 0;
}

.hero-testing-cards {
  width: 100%;
  max-width: 1200px;
  margin-top: 16px;
}

.hero-testing-cards .testing-highlight-item {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
  padding: 20px 16px;
  text-align: left;
}

.hero-testing-cards .testing-highlight-item:hover {
  background: #fff;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
  transform: translateY(-3px);
}

.hero-testing-cards .testing-highlight-icon {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.hero-testing-cards .testing-highlight-label {
  font-size: 12px;
  color: #64748b;
}

.hero-testing-cards .testing-highlight-value {
  font-size: 18px;
  color: #1e293b;
}

.hero-testing-cards .testing-highlight-badge {
  font-size: 11px;
  padding: 2px 8px;
  background: #eff6ff;
  color: var(--color-primary);
  border-radius: 4px;
  font-weight: 500;
}

.hero-testing-cards .testing-highlight-desc {
  font-size: 12px;
  color: #64748b;
  line-height: 1.6;
}

.hero-testing-cards .testing-highlights-summary {
  margin-top: 20px;
  padding: 16px 24px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-radius: 12px;
  border-left: 3px solid var(--color-primary);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
}

.hero-testing-cards .testing-highlights-summary p {
  font-size: 15px;
  color: #1e293b;
  margin: 0;
}

.hero-testing-cards .testing-highlights-summary strong {
  color: var(--color-primary);
  font-weight: 600;
}

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-stat {
  text-align: left;
}

.hero-stat-number {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: #fff;
  line-height: 1;
  margin-bottom: 8px;
}

.hero-stat-number span {
  color: var(--color-accent);
}

.hero-stat-label {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.5);
}

/* ===== Testing Section ===== */
.testing-section {
  padding-top: 150px;
}

.testing-layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 48px;
  align-items: start;
}

.testing-report {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.testing-report img {
  width: 100%;
  height: auto;
  display: block;
}

.testing-highlights {
  margin-bottom: 48px;
  padding-top: 0;
  max-height: 100%;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--color-primary) var(--color-surface);
}

.testing-highlights::-webkit-scrollbar {
  width: 6px;
}

.testing-highlights::-webkit-scrollbar-track {
  background: var(--color-surface);
  border-radius: 3px;
}

.testing-highlights::-webkit-scrollbar-thumb {
  background-color: var(--color-primary);
  border-radius: 3px;
}

.testing-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.testing-table thead {
  background: var(--color-surface);
}

.testing-table th {
  padding: 16px 20px;
  text-align: left;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  border-bottom: 2px solid var(--color-border);
  font-size: var(--font-size-sm);
}

.testing-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  vertical-align: top;
}

.testing-table tbody tr:last-child td {
  border-bottom: none;
}

.testing-table tbody tr:hover {
  background: var(--color-surface-alt);
}

.testing-table td:first-child {
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  white-space: nowrap;
}

.testing-table-summary {
  margin-top: 24px;
  padding: 20px 28px;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary-lighter) 100%);
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--color-primary);
}

.testing-table-summary p {
  font-size: var(--font-size-base);
  color: var(--color-text);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

.testing-table-summary strong {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

.testing-highlights-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.testing-highlight-item {
  display: flex;
  gap: 16px;
  padding: 24px 20px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

.testing-highlight-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.testing-highlight-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  color: var(--color-primary);
  flex-shrink: 0;
}

.testing-highlight-content {
  min-width: 0;
}

.testing-highlight-label {
  font-size: var(--font-size-xs);
  color: var(--color-muted);
  font-weight: var(--font-weight-medium);
  margin-bottom: 4px;
}

.testing-highlight-value {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.testing-highlight-badge {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  padding: 2px 8px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
}

.testing-highlight-desc {
  font-size: var(--font-size-xs);
  color: var(--color-muted);
  line-height: var(--line-height-relaxed);
}

.testing-highlights-summary {
  margin-top: 48px;
  padding: 20px 28px;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary-lighter) 100%);
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--color-primary);
}

.testing-highlights-summary p {
  font-size: var(--font-size-base);
  color: var(--color-text);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

.testing-highlights-summary strong {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

/* ===== Advantages Section ===== */
.advantages {
  background: var(--color-bg);
  position: relative;
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--grid-gap);
}

.advantage-card {
  padding: 48px 36px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.advantage-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  opacity: 0;
  transition: opacity var(--transition-normal);
}

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

.advantage-card:hover::before {
  opacity: 1;
}

.advantage-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  margin-bottom: 24px;
  color: var(--color-primary);
  font-size: 24px;
}

.advantage-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: 12px;
  color: var(--color-text);
}

.advantage-desc {
  font-size: var(--font-size-base);
  color: var(--color-muted);
  line-height: var(--line-height-relaxed);
}

/* ===== Products Section ===== */
.products {
  background: var(--color-surface);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--grid-gap);
}

.product-card {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

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

.product-card-img {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.product-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.product-card:hover .product-card-img img {
  transform: scale(1.05);
}

.product-card-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 4px 12px;
  background: rgba(26, 86, 219, 0.9);
  color: #fff;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(4px);
}

.product-card-body {
  padding: 24px;
}

.product-card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: 8px;
  color: var(--color-text);
}

.product-card-desc {
  font-size: var(--font-size-sm);
  color: var(--color-muted);
  line-height: var(--line-height-relaxed);
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  transition: gap var(--transition-fast);
}

.product-card-link:hover {
  gap: 10px;
}

/* ===== Cases Section ===== */
.cases {
  background: var(--color-bg);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--grid-gap);
}

.case-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
  display: block;
  text-decoration: none;
  color: inherit;
}

.case-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.case-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.75) 0%, transparent 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  transition: background var(--transition-normal);
}

.case-card:hover .case-card-overlay {
  background: linear-gradient(to top, rgba(26, 86, 219, 0.85) 0%, rgba(26, 86, 219, 0.2) 60%);
}

.case-card-category {
  font-size: var(--font-size-xs);
  color: var(--color-accent);
  font-weight: var(--font-weight-medium);
  margin-bottom: 4px;
}

.case-card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: #fff;
}

/* ===== Home Cases Scroll ===== */
.home-cases-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
}

.home-cases-scroll {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding: 20px 0 10px;
  scroll-behavior: smooth;
  scroll-snap-type: x mandatory;
  flex: 1;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.home-cases-scroll::-webkit-scrollbar {
  display: none;
}

.home-cases-arrow {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  background: #fff;
  font-size: 24px;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  z-index: 2;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.home-cases-arrow:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.home-case-item {
  flex-shrink: 0;
  width: 280px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  aspect-ratio: 4/3;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  scroll-snap-align: start;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.home-case-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.home-case-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.home-case-item:hover img {
  transform: scale(1.05);
}

.home-case-title {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 16px;
  background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 100%);
  color: #fff;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
}

/* ===== Cases By Category ===== */
.cases-by-category {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.case-category-section {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.case-category-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 24px;
  background: #fff;
  border-bottom: 2px solid var(--color-border-light);
  cursor: pointer;
  user-select: none;
  position: relative;
}

.case-category-header::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--color-primary);
  border-radius: 0 2px 2px 0;
}

.case-category-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  flex-shrink: 0;
}

.case-category-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  letter-spacing: 1px;
  flex-shrink: 0;
}

.case-category-line {
  flex: 1;
  height: 2px;
  background: repeating-linear-gradient(
    90deg,
    var(--color-border) 0px,
    var(--color-border) 6px,
    transparent 6px,
    transparent 12px
  );
}

.case-category-arrow {
  font-size: 18px;
  color: var(--color-muted);
  font-weight: 300;
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.case-category-section.collapsed .case-category-arrow {
  transform: rotate(-90deg);
}

.case-category-images {
  display: flex;
  gap: 16px;
  padding: 20px 24px 24px;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-behavior: smooth;
  transition: max-height 0.4s ease, opacity 0.3s ease, padding 0.3s ease;
  max-height: 2000px;
}

.case-category-images::-webkit-scrollbar {
  height: 6px;
}

.case-category-images::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}

.case-category-section.collapsed .case-category-images {
  max-height: 0;
  opacity: 0;
  padding-top: 0;
  padding-bottom: 0;
}

.case-image-item {
  display: block;
  border-radius: var(--radius-md);
  overflow: hidden;
  width: 260px;
  min-width: 260px;
  aspect-ratio: 4/3;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}

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

.case-image-item:hover img {
  transform: scale(1.05);
}

/* ===== Lightbox ===== */
#lightboxOverlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}

#lightboxOverlay.active {
  display: flex;
}

.lightbox-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
}

.lightbox-content img {
  max-width: 100%;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.lightbox-close {
  position: absolute;
  top: -40px;
  right: 0;
  font-size: 32px;
  color: #fff;
  cursor: pointer;
  line-height: 1;
}

.lightbox-prev,
.lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 48px;
  color: #fff;
  cursor: pointer;
  padding: 20px;
  user-select: none;
  line-height: 1;
}

.lightbox-prev {
  left: -60px;
}

.lightbox-next {
  right: -60px;
}

.lightbox-prev:hover,
.lightbox-next:hover,
.lightbox-close:hover {
  color: var(--color-accent);
}

/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(135deg, #0a1628 0%, #1a2d4a 50%, #1e3a5f 100%);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.cta-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: #fff;
  margin-bottom: 16px;
}

.cta-desc {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 40px;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-contact-info {
  display: flex;
  gap: 40px;
  justify-content: center;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.cta-contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
}

.cta-contact-item svg {
  color: var(--color-accent);
  flex-shrink: 0;
}

/* ===== Footer ===== */
.footer {
  background: #0a1628;
  padding: 64px 0 0;
  color: rgba(255, 255, 255, 0.6);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand p {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  margin-top: 16px;
  max-width: 320px;
}

.footer-col-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: #fff;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: #fff;
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  font-size: var(--font-size-sm);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.4);
}

/* ===== Page Hero (Inner Pages) ===== */
.page-hero {
  position: relative;
  padding: 160px 0 80px;
  background: linear-gradient(135deg, #0a1628 0%, #1a2d4a 50%, #1e3a5f 100%);
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.page-hero-content {
  position: relative;
  z-index: 1;
}

.page-hero-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 24px;
}

.page-hero-breadcrumb a {
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--transition-fast);
}

.page-hero-breadcrumb a:hover {
  color: #fff;
}

.page-hero-breadcrumb .current {
  color: var(--color-accent);
}

.page-hero-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: #fff;
  margin-bottom: 16px;
}

.page-hero-desc {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.7);
  max-width: 640px;
}

/* ===== About Page ===== */
.about-intro {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.about-intro-text-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: stretch;
}

.about-intro-left {
  display: flex;
  flex-direction: column;
}

.about-intro-left .section-label {
  margin-bottom: 8px;
}

.about-intro-left .about-intro-heading {
  margin-bottom: 20px;
}

.about-intro-left .about-intro-card {
  margin-bottom: 0;
  margin-top: auto;
}

.about-intro-text h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: 24px;
}

.about-intro-text p {
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  line-height: var(--line-height-relaxed);
}

.about-timeline {
  position: relative;
  padding-left: 32px;
}

.about-timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-bottom: 32px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -36px;
  top: 6px;
  width: 10px;
  height: 10px;
  background: var(--color-primary);
  border-radius: 50%;
  border: 2px solid #fff;
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.timeline-year {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  margin-bottom: 4px;
}

.timeline-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: 4px;
}

.timeline-desc {
  font-size: var(--font-size-sm);
  color: var(--color-muted);
}

/* ===== Products Page ===== */
.product-categories {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.category-tab {
  padding: 10px 24px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.category-tab:hover,
.category-tab.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
  border-color: var(--color-primary);
}

/* ===== Cases Page ===== */
.cases-filter {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

/* ===== Testing Page ===== */
.testing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--grid-gap);
}

.testing-card {
  padding: 40px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

.testing-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.testing-card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  color: var(--color-primary);
  font-size: 20px;
}

.testing-card h3 {
  font-size: var(--font-size-xl);
  margin-bottom: 12px;
}

.testing-card p {
  color: var(--color-muted);
  line-height: var(--line-height-relaxed);
}

/* ===== News Page ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--grid-gap);
}

.news-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
}

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

.news-card-img {
  height: 200px;
  overflow: hidden;
}

.news-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.news-card:hover .news-card-img img {
  transform: scale(1.05);
}

.news-card-body {
  padding: 24px;
}

.news-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.news-card-tag {
  padding: 3px 10px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-sm);
}

.news-card-date {
  font-size: var(--font-size-xs);
  color: var(--color-muted);
}

.news-card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: 8px;
  line-height: var(--line-height-snug);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-excerpt {
  font-size: var(--font-size-sm);
  color: var(--color-muted);
  line-height: var(--line-height-relaxed);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

a.news-card {
  text-decoration: none;
  color: inherit;
  display: block;
}

/* ===== Article Detail Page ===== */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 48px;
  align-items: start;
}

.article-content {
  min-width: 0;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.article-meta-date,
.article-meta-author {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-sm);
  color: var(--color-muted);
}

.article-meta-date svg,
.article-meta-author svg {
  flex-shrink: 0;
}

.article-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-snug);
  margin-bottom: 20px;
  color: var(--color-text);
}

.article-summary {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 32px;
  padding-left: 20px;
  border-left: 3px solid var(--color-primary);
}

.article-cover {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 40px;
  aspect-ratio: 16/9;
}

.article-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-body {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.article-body p {
  margin-bottom: 20px;
}

.article-body h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  margin: 40px 0 16px;
}

.article-body h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  margin: 32px 0 12px;
}

.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: 24px 0;
}

.article-body ul,
.article-body ol {
  margin: 16px 0;
  padding-left: 24px;
}

.article-body li {
  margin-bottom: 8px;
  list-style: disc;
}

.article-body ol li {
  list-style: decimal;
}

.article-body blockquote {
  margin: 24px 0;
  padding: 20px 24px;
  background: var(--color-surface);
  border-left: 3px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--color-text-secondary);
  font-style: italic;
}

.article-tags {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.article-tags-label {
  font-size: var(--font-size-sm);
  color: var(--color-muted);
  font-weight: var(--font-weight-medium);
}

.article-tag-link {
  padding: 4px 14px;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.article-tag-link:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.article-nav {
  margin-top: 32px;
}

.article-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  transition: gap var(--transition-fast);
}

.article-back:hover {
  gap: 12px;
}

.article-sidebar {
  position: sticky;
  top: 100px;
}

.article-sidebar-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 24px;
}

.article-sidebar-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.article-related-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.article-related-item {
  display: flex;
  gap: 12px;
  text-decoration: none;
  color: inherit;
  transition: opacity var(--transition-fast);
}

.article-related-item:hover {
  opacity: 0.8;
}

.article-related-img {
  width: 80px;
  height: 60px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
}

.article-related-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-related-info h4 {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-snug);
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-related-info span {
  font-size: var(--font-size-xs);
  color: var(--color-muted);
}

.article-category-list li {
  margin-bottom: 10px;
}

.article-category-list a {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 6px;
}

.article-category-list a::before {
  content: '';
  width: 4px;
  height: 4px;
  background: var(--color-primary);
  border-radius: 50%;
}

.article-category-list a:hover {
  color: var(--color-primary);
}

@media (max-width: 992px) {
  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-sidebar {
    position: static;
  }
}

@media (max-width: 768px) {
  .article-title {
    font-size: var(--font-size-2xl);
  }

  .article-summary {
    font-size: var(--font-size-base);
  }

  .article-sidebar-section {
    padding: 20px;
  }

  .article-body blockquote {
    padding: 16px 18px;
  }

  .article-related-img {
    width: 64px;
    height: 48px;
  }

  .case-lightbox-nav {
    width: 40px;
    height: 40px;
    font-size: 18px;
  }

  .case-lightbox-prev { left: 12px; }
  .case-lightbox-next { right: 12px; }
}

/* ===== Contact Page ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-info-item {
  display: flex;
  gap: 16px;
}

.contact-info-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  color: var(--color-primary);
  flex-shrink: 0;
  font-size: 18px;
}

.contact-info-label {
  font-size: var(--font-size-sm);
  color: var(--color-muted);
  margin-bottom: 4px;
}

.contact-info-value {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.contact-form {
  background: var(--color-surface);
  padding: 40px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.contact-form h3 {
  font-size: var(--font-size-xl);
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  margin-bottom: 8px;
}

.form-group label .required {
  color: var(--color-error);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  font-size: var(--font-size-base);
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-control::placeholder {
  color: var(--color-muted);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

.form-privacy {
  font-size: var(--font-size-xs);
  color: var(--color-muted);
  margin-top: 16px;
}

/* ===== Case Detail Page ===== */
.case-detail-hero {
  position: relative;
  height: 500px;
  overflow: hidden;
}

.case-detail-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-detail-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 48px;
}

.case-detail-hero-overlay .case-card-category {
  font-size: var(--font-size-sm);
  margin-bottom: 8px;
}

.case-detail-hero-overlay h1 {
  font-size: var(--font-size-4xl);
  color: #fff;
  font-weight: var(--font-weight-bold);
}

.case-detail-info {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 40px 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 48px;
}

.case-detail-info-item {
  text-align: center;
}

.case-detail-info-label {
  font-size: var(--font-size-sm);
  color: var(--color-muted);
  margin-bottom: 4px;
}

.case-detail-info-value {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.case-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 48px;
}

.case-gallery-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 4/3;
  position: relative;
}

.case-gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.case-gallery-item:hover img {
  transform: scale(1.05);
}

.case-gallery-item:first-child {
  grid-column: 1 / -1;
  aspect-ratio: 16/9;
}

.case-gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0);
  transition: background var(--transition-normal);
}

.case-gallery-item:hover::after {
  background: rgba(0,0,0,0.1);
}

.case-lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.case-lightbox.active {
  opacity: 1;
  visibility: visible;
}

.case-lightbox img {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.case-lightbox-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.1);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 24px;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.case-lightbox-close:hover {
  background: rgba(255,255,255,0.2);
}

.case-lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.1);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.case-lightbox-nav:hover {
  background: rgba(255,255,255,0.2);
}

.case-lightbox-prev { left: 24px; }
.case-lightbox-next { right: 24px; }

.case-lightbox-counter {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.7);
  font-size: var(--font-size-sm);
}

.case-back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  margin-bottom: 32px;
  transition: gap var(--transition-fast);
}

.case-back-link:hover {
  gap: 12px;
}

@media (max-width: 768px) {
  .case-detail-hero { height: 300px; }
  .case-detail-hero-overlay { padding: 24px; }
  .case-detail-hero-overlay h1 { font-size: var(--font-size-2xl); }
  .case-detail-info { grid-template-columns: repeat(2, 1fr); }
  .case-gallery { grid-template-columns: 1fr; }
  .case-gallery-item:first-child { aspect-ratio: 4/3; }
}

/* ===== Testing List Page ===== */
.testing-list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--grid-gap);
}

.testing-list-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
  display: block;
  text-decoration: none;
  color: inherit;
}

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

.testing-list-card-media {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.testing-list-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.testing-list-card:hover .testing-list-card-media img {
  transform: scale(1.05);
}

.testing-list-card-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: rgba(26, 86, 219, 0.9);
  color: #fff;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(4px);
}

.testing-list-card-body {
  padding: 24px;
}

.testing-list-card-tag {
  display: inline-block;
  padding: 3px 10px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.testing-list-card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: 8px;
  line-height: var(--line-height-snug);
  color: var(--color-text);
}

.testing-list-card-desc {
  font-size: var(--font-size-sm);
  color: var(--color-muted);
  line-height: var(--line-height-relaxed);
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.testing-list-card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 16px;
  border-top: 1px solid var(--color-border-light);
}

.testing-list-card-meta span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-size-xs);
  color: var(--color-muted);
}

.testing-list-card-meta svg {
  flex-shrink: 0;
}

/* ===== Testing Detail Page ===== */
.testing-detail-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 48px;
  align-items: start;
}

.testing-detail-main {
  min-width: 0;
}

.testing-detail-header {
  margin-bottom: 24px;
}

.testing-detail-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-snug);
  margin: 12px 0 16px;
  color: var(--color-text);
}

.testing-detail-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.testing-detail-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-sm);
  color: var(--color-muted);
}

.testing-detail-meta svg {
  flex-shrink: 0;
}

.testing-detail-summary {
  padding: 20px 24px;
  background: var(--color-surface);
  border-left: 3px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-bottom: 48px;
}

.testing-detail-summary p {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

.testing-detail-section {
  margin-bottom: 48px;
}

.testing-detail-section-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-border);
}

.testing-detail-section-title svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

/* ===== Testing Video ===== */
.testing-video-wrapper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 16px;
  background: #000;
  aspect-ratio: 16/9;
}

.testing-video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.testing-video-list {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.testing-video-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.testing-video-item:hover,
.testing-video-item.active {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.testing-video-item-thumb {
  position: relative;
  width: 48px;
  height: 36px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
}

.testing-video-item-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.testing-video-item-play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.4);
  color: #fff;
}

/* ===== Testing Video Showcase ===== */
.testing-video-showcase {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.testing-video-showcase-item {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.testing-video-showcase-item:hover {
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.testing-video-showcase-item:nth-child(even) {
  direction: rtl;
}

.testing-video-showcase-item:nth-child(even) > * {
  direction: ltr;
}

.testing-video-showcase-player {
  aspect-ratio: 16/9;
  background: #000;
  overflow: hidden;
}

.testing-video-showcase-player video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.testing-video-showcase-info {
  padding: 32px 32px 32px 0;
}

.testing-video-showcase-item:nth-child(even) .testing-video-showcase-info {
  padding: 0 0 0 32px;
}

.testing-video-showcase-info h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin: 12px 0 16px;
  color: var(--color-text);
}

.testing-video-showcase-info p {
  font-size: var(--font-size-base);
  color: var(--color-muted);
  line-height: var(--line-height-relaxed);
}

@media (max-width: 992px) {
  .testing-video-showcase-item {
    grid-template-columns: 1fr;
  }
  .testing-video-showcase-item:nth-child(even) {
    direction: ltr;
  }
  .testing-video-showcase-info {
    padding: 0 24px 24px;
  }
  .testing-video-showcase-item:nth-child(even) .testing-video-showcase-info {
    padding: 0 24px 24px;
  }
}

@media (max-width: 768px) {
  .testing-video-showcase-info {
    padding: 0 16px 16px;
  }
  .testing-video-showcase-item:nth-child(even) .testing-video-showcase-info {
    padding: 0 16px 16px;
  }
}

/* ===== Testing Gallery ===== */
.testing-gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.testing-gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
}

.testing-gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.testing-gallery-item:hover img {
  transform: scale(1.08);
}

.testing-gallery-item-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  transition: all var(--transition-normal);
  opacity: 0;
}

.testing-gallery-item:hover .testing-gallery-item-overlay {
  background: rgba(26, 86, 219, 0.5);
  opacity: 1;
}

/* ===== Testing Report ===== */
.testing-report h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  margin: 24px 0 12px;
}

.testing-report h3:first-child {
  margin-top: 0;
}

.testing-report p {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 16px;
}

.testing-report ul {
  padding-left: 24px;
  margin-bottom: 16px;
}

.testing-report li {
  list-style: disc;
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 8px;
}

.testing-report strong {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

.testing-data-table {
  overflow-x: auto;
  margin: 16px 0 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.testing-data-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.testing-data-table th {
  background: var(--color-surface);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  padding: 12px 16px;
  text-align: left;
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
}

.testing-data-table td {
  padding: 10px 16px;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border-light);
}

.testing-data-table tr:last-child td {
  border-bottom: none;
}

.testing-data-table tr:hover td {
  background: var(--color-primary-lighter);
}

/* ===== Testing Detail Sidebar ===== */
.testing-detail-sidebar {
  position: sticky;
  top: 100px;
}

.testing-detail-sidebar-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 24px;
}

.testing-info-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.testing-info-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border-light);
}

.testing-info-item:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.testing-info-label {
  font-size: var(--font-size-sm);
  color: var(--color-muted);
}

.testing-info-value {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.testing-info-pass {
  color: var(--color-success);
  font-weight: var(--font-weight-semibold);
}

/* ===== Lightbox ===== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
}

.lightbox.open {
  display: flex;
}

.lightbox-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.92);
}

.lightbox-content {
  position: relative;
  z-index: 1;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-img-wrapper {
  max-width: 100%;
  max-height: 85vh;
}

.lightbox-img {
  max-width: 100%;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.lightbox-close {
  position: fixed;
  top: 20px;
  right: 20px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  transition: background var(--transition-fast);
  z-index: 2;
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.25);
}

.lightbox-prev,
.lightbox-next {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  transition: background var(--transition-fast);
  z-index: 2;
}

.lightbox-prev { left: 20px; }
.lightbox-next { right: 20px; }

.lightbox-prev:hover,
.lightbox-next:hover {
  background: rgba(255, 255, 255, 0.25);
}

.lightbox-counter {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
  z-index: 2;
}

/* ===== Scroll Animations ===== */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-up-delay-1 { transition-delay: 0.1s; }
.fade-up-delay-2 { transition-delay: 0.2s; }
.fade-up-delay-3 { transition-delay: 0.3s; }
.fade-up-delay-4 { transition-delay: 0.4s; }

/* ===== Responsive ===== */
@media (max-width: 1200px) {
  .hero-title { font-size: 42px; }
  .section-title { font-size: 32px; }
  .testing-highlights-grid { grid-template-columns: repeat(2, 1fr); }
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
}

@media (max-width: 992px) {
  :root {
    --section-spacing: 72px;
  }

  .header-nav { display: none; }
  .header-phone { display: none; }
  .mobile-toggle { display: flex; }

  .header-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-bg);
    padding: 16px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
  }

  .hero-content { padding: 160px 0 0 0; }
  .hero-title { font-size: 36px; }
  .hero-stats { gap: 32px; flex-wrap: wrap; }
  .hero-advantage-cards { grid-template-columns: 1fr; margin-bottom: -70px; }
  .testing-section { padding-top: 140px; }
  .testing-layout { grid-template-columns: 1fr; gap: 32px; }
  .testing-report { max-width: 400px; margin: 0 auto; }
  .testing-highlights { padding-top: 30px; }
  .testing-table { display: block; overflow-x: auto; }
  .advantages-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .testing-grid { grid-template-columns: 1fr; }
  .testing-list-grid { grid-template-columns: repeat(2, 1fr); }
  .testing-detail-layout { grid-template-columns: 1fr; }
  .testing-detail-sidebar { position: static; }
  .testing-gallery { grid-template-columns: repeat(3, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root {
    --section-spacing: 56px;
    --container-padding: 16px;
  }

  .hero { min-height: auto; }
  .hero-content { padding: 140px 0 0 0; }
  .hero-title { font-size: 28px; letter-spacing: 2px; }
  .hero-subtitle { flex-direction: column; gap: 8px; }
  .hero-subtitle span { font-size: var(--font-size-base); }
  .hero-desc { font-size: var(--font-size-sm); padding: 0 8px; }
  .hero-stats { gap: 24px; }
  .hero-stat-number { font-size: 28px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .hero-advantage-cards { margin-bottom: -60px; }
  .testing-section { padding-top: 130px; }
  .testing-layout { grid-template-columns: 1fr; gap: 24px; }
  .testing-report { max-width: 350px; margin: 0 auto; }
  .testing-highlights { padding-top: 20px; }
  .testing-table { font-size: var(--font-size-xs); }
  .testing-table th,
  .testing-table td { padding: 12px 16px; }

  .section-title { font-size: 24px; }
  .section-subtitle { font-size: var(--font-size-base); }

  .products-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .testing-list-grid { grid-template-columns: 1fr; }
  .testing-gallery { grid-template-columns: repeat(2, 1fr); }
  .testing-detail-title { font-size: var(--font-size-2xl); }
  .testing-detail-meta { gap: 12px; }
  .cta-contact-info { flex-direction: column; gap: 16px; align-items: center; }
  .footer-grid { grid-template-columns: repeat(3, 1fr); gap: 16px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }

  .page-hero { padding: 120px 0 60px; }
  .page-hero-title { font-size: 28px; }

  .contact-form { padding: 24px; }
}

@media (max-width: 576px) {
  .hero-title { font-size: 24px; }
  .cases-grid { grid-template-columns: 1fr; }
  .advantage-card { padding: 32px 24px; }
  .case-category-images { grid-template-columns: 1fr 1fr; gap: 12px; padding: 16px; }
  .case-category-header { padding: 12px 16px; }
  .case-detail-info { grid-template-columns: 1fr; }
}

@media (max-width: 992px) {
  .case-category-images { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .case-category-images { grid-template-columns: repeat(2, 1fr); gap: 12px; padding: 16px; }
  .case-category-header { padding: 12px 16px; }
  .case-category-title { font-size: var(--font-size-base); }
  .cases-by-category { gap: 24px; }
}

/* ===== About Page - Layout Styles (Blue/White Theme) ===== */

.about-intro-heading {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: 24px;
  color: var(--color-text);
}

.about-intro-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  margin-bottom: 32px;
}

.about-intro-card p {
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 12px;
  font-size: 15px;
}

.about-intro-card p:last-child {
  margin-bottom: 0;
}

.about-intro-highlight {
  color: var(--color-primary) !important;
  font-weight: 600;
  font-size: 16px !important;
}

.about-advantages-inline {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
}

.about-adv-heading {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: 16px;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.about-adv-heading::before {
  content: '';
  width: 4px;
  height: 22px;
  background: var(--color-primary);
  border-radius: 2px;
  flex-shrink: 0;
}

.about-advantage-item {
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 14px;
  font-size: 15px;
}

.about-advantage-item:last-child {
  margin-bottom: 0;
}

.about-advantage-item strong {
  color: var(--color-text);
  font-weight: 600;
}

/* 生产基地一行展示 */
.about-factory-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.about-factory-row-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16/10;
}

.about-factory-row-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.about-factory-row-item:hover img {
  transform: scale(1.04);
}

.about-factory-tag {
  position: absolute;
  top: 0;
  left: 0;
  padding: 6px 16px;
  background: var(--color-primary);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  border-radius: 0 0 8px 0;
  z-index: 1;
}

/* 数据卡片行 */
.about-stats-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.about-stat-card {
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 16px;
  text-align: center;
  transition: all 0.3s ease;
}

.about-stat-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.about-stat-number {
  font-size: 48px;
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
  font-family: var(--font-display);
}

.about-stat-number [data-count] {
  font-size: inherit;
  font-weight: inherit;
  color: inherit;
  font-family: inherit;
}

.about-stat-unit {
  font-size: 15px;
  color: var(--color-muted);
  margin-top: 4px;
}

.about-stat-label {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-top: 8px;
  font-weight: 500;
}

/* 工厂图片画廊 */
.about-factory-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.about-factory-gallery-main {
  grid-row: 1 / 3;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.about-factory-gallery-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.about-factory-gallery-main:hover img {
  transform: scale(1.03);
}

.about-factory-gallery-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.about-factory-gallery-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
  transition: transform 0.5s ease;
}

.about-factory-gallery-grid img:hover {
  transform: scale(1.05);
}

/* 发展历程卡片 */
.about-history-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.about-history-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
}

.about-history-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.about-history-img {
  height: 200px;
  overflow: hidden;
}

.about-history-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.about-history-card:hover .about-history-img img {
  transform: scale(1.05);
}

.about-history-content {
  padding: 24px;
}

.about-history-title {
  font-size: 17px;
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.about-history-title::before {
  content: '';
  width: 4px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 2px;
  flex-shrink: 0;
}

.about-history-content p {
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.8;
}

/* 全产业链闭环生态 */
.about-ecosystem {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--color-primary-light);
  border: 1px solid rgba(26, 86, 219, 0.15);
  border-radius: var(--radius-lg);
  padding: 24px 32px;
}

.about-ecosystem-icon {
  color: var(--color-primary);
  flex-shrink: 0;
}

.about-ecosystem-text {
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.8;
}

.about-ecosystem-text strong {
  color: var(--color-text);
  font-weight: 600;
}

/* 企业文化 - 上排3列 */
.about-culture-top {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.about-culture-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all 0.3s ease;
}

.about-culture-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.about-culture-card-title {
  font-size: 17px;
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.about-culture-card-title::before {
  content: '';
  width: 4px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 2px;
  flex-shrink: 0;
}

.about-culture-card p {
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 10px;
}

.about-culture-card p:last-child {
  margin-bottom: 0;
}

.about-culture-card strong {
  color: var(--color-text);
}

/* 企业文化 - 下排图文卡片 */
.about-culture-bottom {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.about-culture-bottom-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
}

.about-culture-bottom-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.about-culture-bottom-img {
  height: 200px;
  overflow: hidden;
}

.about-culture-bottom-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.about-culture-bottom-card:hover .about-culture-bottom-img img {
  transform: scale(1.05);
}

.about-culture-bottom-content {
  padding: 24px;
}

.about-culture-bottom-title {
  font-size: 16px;
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.about-culture-bottom-title::before {
  content: '';
  width: 4px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 2px;
  flex-shrink: 0;
}

.about-culture-bottom-content p {
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.8;
}

/* ===== About Page Responsive ===== */
@media (max-width: 1200px) {
  .about-intro-text-row {
    grid-template-columns: 1fr;
  }
  .about-stats-row {
    grid-template-columns: repeat(3, 1fr);
  }
  .about-factory-gallery {
    grid-template-columns: 1fr;
  }
  .about-factory-gallery-main {
    grid-row: auto;
  }
}

@media (max-width: 992px) {
  .about-history-grid {
    grid-template-columns: 1fr;
  }
  .about-culture-top {
    grid-template-columns: 1fr;
  }
  .about-culture-bottom {
    grid-template-columns: 1fr;
  }
  .about-stats-row {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .about-intro-text-row {
    grid-template-columns: 1fr;
  }
  .about-factory-row {
    grid-template-columns: 1fr;
  }
  .about-stats-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .about-stat-number {
    font-size: 36px;
  }
  .about-ecosystem {
    flex-direction: column;
    text-align: center;
  }
  .about-intro-card,
  .about-advantages-inline {
    padding: 20px;
  }
}

@media (max-width: 576px) {
  .about-stats-row {
    grid-template-columns: 1fr 1fr;
  }
  .about-stat-card {
    padding: 20px 12px;
  }
  .about-stat-number {
    font-size: 32px;
  }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* ===== Products Page - Enhanced Layout (Blue/White Theme) ===== */

/* Core Tech Section */
.core-tech-section {
  background: var(--color-bg);
}

.core-tech-hero {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 64px;
}

.core-tech-hero-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  position: relative;
  box-shadow: var(--shadow-lg);
}

.core-tech-hero-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.core-tech-hero-text h3 {
  font-size: var(--font-size-xl);
  color: var(--color-text);
  margin-bottom: 16px;
  font-weight: var(--font-weight-bold);
}

.core-tech-hero-text p {
  color: var(--color-text-secondary);
  line-height: 1.8;
  font-size: 15px;
}

.core-tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.core-tech-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.core-tech-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.core-tech-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.core-tech-card:hover::before {
  opacity: 1;
}

.core-tech-card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  color: var(--color-primary);
}

.core-tech-card h4 {
  font-size: 18px;
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: 12px;
}

.core-tech-card p {
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.8;
}

/* Seven No Seven Prevent Section */
.seven-section {
  background: var(--color-surface);
}

.seven-main-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}

.seven-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: all var(--transition-normal);
}

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

.seven-card-img {
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 16/10;
  margin-bottom: 24px;
}

.seven-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.seven-card h3 {
  font-size: 20px;
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.seven-card h3 .seven-badge {
  display: inline-flex;
  padding: 3px 12px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 13px;
  border-radius: var(--radius-sm);
  font-weight: var(--font-weight-semibold);
}

.seven-card p {
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.8;
}

.seven-bottom-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}

.seven-bottom-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  transition: all var(--transition-normal);
}

.seven-bottom-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.seven-bottom-card h4 {
  font-size: 15px;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: 12px;
}

.seven-bottom-card p {
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.8;
}

.seven-bottom-card strong {
  color: var(--color-text);
}

.seven-footer-text {
  text-align: center;
  padding: 32px 40px;
  background: var(--color-primary);
  border-radius: var(--radius-lg);
}

.seven-footer-text p {
  color: #fff;
  font-size: 16px;
  font-weight: var(--font-weight-medium);
  letter-spacing: 1px;
}

/* Testing Params Section */
.testing-params-section {
  background: var(--color-bg);
}

.testing-params-layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 48px;
  align-items: stretch;
}

.testing-report-col {
  display: flex;
  flex-direction: column;
}

.testing-report-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  flex: 1;
  min-height: 0;
}

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

.testing-report-desc {
  margin-top: 20px;
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.8;
}

.btn-download-report {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  padding: 12px 24px;
  background: var(--color-primary);
  color: #fff;
  font-size: 14px;
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  text-decoration: none;
}

.btn-download-report:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.btn-download-report svg {
  flex-shrink: 0;
}

.testing-params-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.testing-param-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition-normal);
}

.testing-param-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.testing-param-card-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  color: var(--color-primary);
}

.testing-param-card h4 {
  font-size: 17px;
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: 12px;
}

.testing-param-card p {
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.7;
}

.testing-param-card .highlight-value {
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
  font-size: 16px;
}

.testing-param-full {
  grid-column: 1 / -1;
  background: var(--color-primary-light);
  border-color: rgba(26, 86, 219, 0.2);
}

.testing-param-full h4 {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Material Intro Section */
.material-intro-section {
  background: var(--color-surface);
}

.material-intro-box {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  margin-bottom: 56px;
  box-shadow: var(--shadow-sm);
}

.material-intro-box p {
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 2;
}

.timeline-section {
  position: relative;
  padding: 20px 0;
}

.timeline-track {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  padding: 0 20px;
}

.timeline-track::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 40px;
  right: 40px;
  height: 2px;
  background: var(--color-border);
  transform: translateY(-50%);
}

.timeline-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  z-index: 1;
  flex: 1;
}

.timeline-dot {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 3px solid var(--color-bg);
  margin-bottom: 16px;
  position: relative;
  z-index: 2;
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.timeline-dot.red { background: #ef4444; }
.timeline-dot.orange { background: #f97316; }
.timeline-dot.green { background: var(--color-primary); }

.timeline-node-img {
  width: 140px;
  height: 90px;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 16px;
  border: 2px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.timeline-node-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.timeline-node-day {
  font-size: 20px;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: 4px;
}

.timeline-node-label {
  font-size: 14px;
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

/* Construction System Section */
.construction-section {
  background: var(--color-bg);
}

.construction-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.construction-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.construction-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

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

.construction-card-day {
  font-size: 48px;
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 4px;
  font-family: var(--font-display);
}

.construction-card-day span {
  font-size: 20px;
  font-weight: var(--font-weight-medium);
  color: var(--color-muted);
}

.construction-card-divider {
  width: 100%;
  height: 1px;
  background: var(--color-border);
  margin: 16px 0;
}

.construction-card h4 {
  font-size: 17px;
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: 10px;
}

.construction-card p {
  color: var(--color-muted);
  font-size: 13px;
  line-height: 1.7;
}

.construction-advantage-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.construction-advantage-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  border-radius: 50%;
  flex-shrink: 0;
  color: var(--color-primary);
}

.construction-advantage-text h4 {
  font-size: 17px;
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: 8px;
}

.construction-advantage-text h4 strong {
  color: var(--color-primary);
}

.construction-advantage-text p {
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.8;
}

/* Products Page Responsive */
@media (max-width: 1200px) {
  .core-tech-hero {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .testing-params-layout {
    grid-template-columns: 300px 1fr;
  }
  .construction-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 992px) {
  .core-tech-grid {
    grid-template-columns: 1fr;
  }
  .seven-main-grid {
    grid-template-columns: 1fr;
  }
  .seven-bottom-grid {
    grid-template-columns: 1fr;
  }
  .testing-params-layout {
    grid-template-columns: 1fr;
  }
  .testing-params-grid {
    grid-template-columns: 1fr;
  }
  .testing-param-full {
    grid-column: auto;
  }
  .timeline-track {
    flex-direction: column;
    gap: 32px;
    padding: 0;
  }
  .timeline-track::before {
    top: 20px;
    bottom: 20px;
    left: 50%;
    right: auto;
    width: 2px;
    height: auto;
    transform: translateX(-50%);
  }
  .construction-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .construction-grid {
    grid-template-columns: 1fr;
  }
  .construction-advantage-box {
    flex-direction: column;
  }
  .core-tech-card,
  .seven-card {
    padding: 24px;
  }
  .material-intro-box {
    padding: 24px;
  }
}

@media (max-width: 992px) {
  .hero-content {
    padding: 160px 0 0 0;
  }
  .hero-title {
    font-size: 48px;
  }
  .hero-subtitle {
    flex-direction: column;
    gap: 12px;
  }
}

@media (max-width: 768px) {
  .hero-content {
    padding: 120px 0 0 0;
  }
  .hero-title {
    font-size: 32px;
    letter-spacing: 2px;
  }
  .hero-subtitle span {
    font-size: var(--font-size-base);
  }
  .hero-desc {
    font-size: var(--font-size-sm);
    padding: 0 16px;
  }
  .hero-advantage-cards {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .testing-table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    font-size: 13px;
  }
  .testing-table th,
  .testing-table td {
    padding: 12px 8px;
    min-width: 100px;
  }
  .testing-table th:first-child,
  .testing-table td:first-child {
    position: sticky;
    left: 0;
    background: var(--color-bg);
    z-index: 1;
    min-width: 120px;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    text-align: left;
  }
  .footer-brand {
    grid-column: 1 / -1;
    text-align: left;
  }
  .footer-col-title {
    font-size: 13px;
  }
  .footer-links a {
    font-size: 12px;
  }
  .header-cta {
    display: none;
  }
  .header-inner {
    gap: 12px;
  }
  .cases-filter,
  .product-categories {
    flex-wrap: wrap;
    gap: 8px;
  }
  .category-tab {
    flex: 1 1 auto;
    min-width: 80px;
    padding: 10px 12px;
    font-size: 13px;
  }
  .home-cases-arrow {
    display: none;
  }
  .home-cases-scroll {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .products-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .testing-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .testing-list-grid {
    grid-template-columns: 1fr;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
  .cases-by-category {
    grid-template-columns: 1fr;
  }
  .about-intro-text-row {
    grid-template-columns: 1fr;
  }
  .about-factory-row {
    grid-template-columns: 1fr;
  }
  .about-stats-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .about-history-grid {
    grid-template-columns: 1fr;
  }
  .about-culture-top {
    grid-template-columns: 1fr;
  }
  .about-culture-bottom {
    grid-template-columns: 1fr;
  }
  .cta-actions {
    flex-direction: column;
    gap: 12px;
  }
  .cta-actions .btn {
    width: 100%;
    justify-content: center;
  }
  .cta-contact-info {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
  .page-hero-content {
    padding: 100px 0 60px;
  }
  .page-hero-title {
    font-size: 28px;
  }
  .page-hero-desc {
    font-size: var(--font-size-base);
  }
  .section-title {
    font-size: 24px;
  }
  .section-subtitle {
    font-size: var(--font-size-base);
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 26px;
  }
  .hero-advantage-card {
    padding: 20px 16px;
  }
  .hero-advantage-title {
    font-size: var(--font-size-base);
  }
  .hero-advantage-desc {
    font-size: var(--font-size-sm);
  }
  .section-title {
    font-size: 20px;
  }
  .page-hero-title {
    font-size: 24px;
  }
  .about-stats-row {
    grid-template-columns: 1fr;
  }
  .testing-table th,
  .testing-table td {
    padding: 10px 6px;
    font-size: 12px;
  }
  .case-detail-hero { height: 240px; }
  .case-lightbox-nav {
    width: 36px;
    height: 36px;
    font-size: 16px;
  }
  .case-lightbox-prev { left: 8px; }
  .case-lightbox-next { right: 8px; }
}