/* ============================================
   杭州中晟 — 企业官网设计系统（中文站）
   色调: 海水蓝渐变 #0693E3 → #142D6D
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  --color-primary: #3182CE;
  --color-primary-dark: #142D6D;
  --color-primary-light: #EBF4FF;
  --color-accent: #0693E3;
  --color-cta: #d42427;
  --color-cta-hover: #b31b1e;
  --color-text: #1a1a2e;
  --color-text-secondary: #4a5568;
  --color-text-light: #8896a7;
  --color-bg: #f5f7fa;
  --color-white: #ffffff;
  --color-border: #e2e8f0;
  --color-dark: #0f1b3d;
  --font-heading: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --radius: 4px;
  --radius-md: 8px;
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --transition: 0.3s ease;
  --max-width: 1200px;
  --header-height: 70px;
  --topbar-height: 40px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  min-height: 100vh;
  padding-top: calc(var(--topbar-height) + var(--header-height));
  overflow-x: hidden;
}

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

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

ul, ol { list-style: none; }

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.625rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.05rem; }

p {
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 60px 0;
}

.section--white { background: var(--color-white); }
.section--gray { background: var(--color-bg); }

/* ---------- Top Announcement Bar ---------- */
.topbar {
  background: linear-gradient(280deg, #0693E3 0%, #142D6D 100%);
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.85);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1001;
  cursor: pointer;
}

.topbar .container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

a.topbar,
a.topbar:link,
a.topbar:visited,
a.topbar:hover,
a.topbar:active,
.topbar a {
  color: #fff;
  text-decoration: none;
}

.topbar-phone {
  display: flex;
  align-items: center;
  gap: 6px;
}

.topbar-phone svg {
  width: 14px;
  height: 14px;
  fill: rgba(255,255,255,0.8);
}

.topbar-divider {
  width: 1px;
  height: 14px;
  background: rgba(255,255,255,0.25);
  margin: 0 8px;
}

.topbar-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-cta);
  color: #fff !important;
  padding: 4px 14px;
  border-radius: 2px;
  font-weight: 600;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}

.topbar-cta:hover {
  background: var(--color-cta-hover);
  transform: translateY(-1px);
}

.topbar-cta svg {
  width: 14px;
  height: 14px;
  fill: #fff;
}

/* ---------- Site Header ---------- */
.site-header {
  position: fixed;
  top: var(--topbar-height);
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--color-white);
  height: var(--header-height);
  border-bottom: 2px solid var(--color-primary);
  box-shadow: var(--shadow-sm);
}

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

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

.logo-img {
  width: 42px;
  height: 42px;
  object-fit: contain;
  border-radius: 4px;
  flex-shrink: 0;
}

.logo-text h2,
.logo-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.2;
  margin: 0;
  display: block;
  font-family: var(--font-heading);
}

.logo-text p,
.logo-tagline {
  font-size: 0.75rem;
  color: var(--color-text-light);
  line-height: 1.2;
  margin: 0;
  display: block;
}

/* Main Nav */
.main-nav {
  display: flex;
  align-items: center;
  gap: 0;
}

.main-nav a {
  display: flex;
  align-items: center;
  height: var(--header-height);
  padding: 0 20px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  transition: all var(--transition);
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-cta);
  transform: scaleX(0);
  transition: transform var(--transition);
}

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

.main-nav a:hover::after,
.main-nav a.active::after {
  transform: scaleX(1);
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  z-index: 1100;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  font-size: 0.85rem;
  padding: 10px 0;
  color: var(--color-text-light);
  background: #f8fafc;
  border-bottom: 1px solid var(--color-border);
}

.breadcrumb .container {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px 6px;
}

.breadcrumb a {
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.breadcrumb .sep {
  color: var(--color-border);
}

.breadcrumb .current {
  color: var(--color-primary);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
}

.breadcrumb + .section {
  padding-top: 30px;
}

/* ---------- Hero Section (Homepage) ---------- */
.hero {
  background: var(--color-white);
  padding: 0;
  border-bottom: 1px solid var(--color-border);
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  min-height: 400px;
}

.hero-content {
  padding: 48px 40px 48px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-content h1 {
  font-size: 1.75rem;
  margin-bottom: 20px;
  color: var(--color-primary);
  line-height: 1.5;
}

.hero-content p {
  font-size: 0.95rem;
  line-height: 1.9;
  margin-bottom: 16px;
  color: var(--color-text-secondary);
}

/* Hero Carousel (left side) */
.hero-carousel {
  position: relative;
  overflow: hidden;
  max-height: 450px;
}

.carousel-slides {
  position: relative;
  width: 100%;
  height: 100%;
}

.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.6s ease;
}

.carousel-slide.active {
  opacity: 1;
  position: relative;
}

.carousel-slide img {
  width: 100%;
  height: 450px;
  object-fit: cover;
}

.carousel-dots {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 2;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: background 0.3s;
}

.carousel-dot.active {
  background: var(--color-white);
}

/* ---------- 2-Column Horizontal Product Cards (Homepage) ---------- */
.product-grid-h {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.product-grid-h--cols3 {
  grid-template-columns: repeat(3, 1fr);
}

.product-grid-h--cols3 .product-card-h2 {
  flex-direction: column;
}

.product-grid-h--cols3 .product-card-h2-image {
  width: 100%;
}

.product-grid-h--cols3 .product-card-h2-body {
  padding: 16px;
}

.product-card-h2 {
  display: flex;
  gap: 16px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: all var(--transition);
}

.product-card-h2:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.product-card-h2-image {
  width: 50%;
  flex-shrink: 0;
  overflow: hidden;
  aspect-ratio: 4/3;
}

.product-card-h2-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.product-card-h2:hover .product-card-h2-image img {
  transform: scale(1.05);
}

.product-card-h2-body {
  padding: 14px 16px 14px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex: 1;
}

.product-card-h2-body h3 {
  font-size: 1rem;
  margin-bottom: 8px;
  color: var(--color-text);
}

.product-card-h2:hover .product-card-h2-body h3 {
  color: var(--color-primary);
}

.product-card-h2-body p {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------- Product Category Tabs ---------- */
.product-tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 32px;
}

.product-tab {
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  transition: all var(--transition);
  background: none;
  font-family: inherit;
}

.product-tab:hover {
  color: var(--color-primary);
}

.product-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* ---------- Product Grid ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.product-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

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

.product-card-image {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--color-primary-light);
}

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

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

.product-card-body {
  padding: 14px;
  text-align: center;
}

.product-card-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card a:hover .product-card-title {
  color: var(--color-primary);
}

/* 2-column variant for product list page */
.product-grid--2col {
  grid-template-columns: repeat(2, 1fr);
}

.product-card-desc {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-top: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  max-height: calc(1.7em * 2);
}

.product-grid--2col .product-card-body {
  text-align: left;
}

.product-category-heading {
  font-size: 1.25rem;
  color: var(--color-dark);
  border-left: 4px solid var(--color-primary);
  padding: 8px 0 8px 12px;
  margin: 0 0 20px 0;
}

.product-category-heading + .product-grid {
  margin-bottom: 40px;
}

/* ---------- Section Header ---------- */
.section-header {
  margin-bottom: 32px;
}

.section-header h2 {
  font-size: 1.375rem;
  position: relative;
  padding-bottom: 12px;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--color-primary);
}

.section-header p {
  margin-top: 10px;
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* ---------- News Cards (Homepage) ---------- */
.news-cards-home {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.news-card-home {
  display: flex;
  gap: 24px;
  padding: 20px;
  background: var(--color-bg-light);
  border-radius: var(--radius);
  transition: box-shadow var(--transition);
}

.news-card-home:hover {
  box-shadow: var(--shadow-hover);
}

.news-card-home-text {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-card-home-text h3 {
  font-size: 1.05rem;
  margin-bottom: 12px;
  color: var(--color-text);
  line-height: 1.6;
}

.news-card-home:hover h3 {
  color: var(--color-primary);
}

.news-card-home-text p {
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-home-date {
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-top: 12px;
}

.news-card-home-image {
  width: 260px;
  height: 170px;
  flex-shrink: 0;
  border-radius: var(--radius);
  overflow: hidden;
}

.news-card-home-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- News List (text-only, used in bottom-news) ---------- */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.news-list-item {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--color-border);
  transition: color var(--transition);
}

.news-list-item:hover {
  color: var(--color-primary);
}

.news-list-item .news-dot {
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 8px;
}

.news-list-item .news-title {
  flex: 1;
  font-size: 0.9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.news-list-item .news-date {
  font-size: 0.8rem;
  color: var(--color-text-light);
  flex-shrink: 0;
}

/* ---------- News Full-Width Card (News List Page, left text + right image) ---------- */
.news-list-heading {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--color-text);
}

.news-card-list {
  display: flex;
  flex-direction: column;
}

.news-card-full {
  display: flex;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition);
  align-items: flex-start;
}

.news-card-full:first-child {
  padding-top: 0;
}

.news-card-full:hover {
  background: rgba(49,130,206,0.02);
}

.news-card-full-text {
  flex: 1;
  min-width: 0;
}

.news-card-full-text h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.6;
  color: var(--color-text);
}

.news-card-full:hover h3 {
  color: var(--color-primary);
}

.news-card-full-meta {
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-bottom: 10px;
}

.news-card-full-text p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-full-image {
  width: 360px;
  flex-shrink: 0;
  aspect-ratio: 3/2;
  overflow: hidden;
  background: var(--color-primary-light);
}

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

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

/* ---------- Cases / Feature Grid ---------- */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.case-card {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
  cursor: pointer;
}

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

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

.case-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.6) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  padding: 16px;
  opacity: 0;
  transition: opacity var(--transition);
}

.case-card:hover .case-card-overlay {
  opacity: 1;
}

.case-card-overlay span {
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
}

/* Cases 2-column variant with title below image */
.case-grid--2col {
  grid-template-columns: repeat(2, 1fr);
}

.case-card-v {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: all var(--transition);
}

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

.case-card-v-image {
  aspect-ratio: 16/10;
  overflow: hidden;
}

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

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

.case-card-v-title {
  padding: 12px 16px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: center;
}

.case-card-v:hover .case-card-v-title {
  color: var(--color-primary);
}

/* ---------- Two Column Layout (Product List / News List) ---------- */
.two-col-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.sidebar-intro {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 0;
}

.sidebar-intro-header {
  background: var(--color-primary);
  color: #fff;
  padding: 16px 20px;
  font-size: 1.05rem;
  font-weight: 700;
}

.sidebar-intro-image {
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
}

.sidebar-intro-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sidebar-intro-text {
  padding: 16px 20px;
  font-size: 0.85rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

.sidebar-nav {
  margin-top: 20px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
}

.sidebar-nav-header {
  background: var(--color-primary);
  color: #fff;
  padding: 12px 20px;
  font-size: 0.95rem;
  font-weight: 600;
}

.sidebar-nav a {
  display: block;
  padding: 10px 20px;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition);
}

.sidebar-nav a:last-child {
  border-bottom: none;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding-left: 28px;
}

/* ---------- Article / Detail Page ---------- */
.article-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.article-content {
  background: var(--color-white);
  padding: 40px;
  border: 1px solid var(--color-border);
}

.article-title {
  font-size: 1.5rem;
  margin-bottom: 12px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

.article-meta {
  color: var(--color-text-light);
  font-size: 0.85rem;
  margin-bottom: 20px;
}

.article-float-image {
  float: left;
  width: 40%;
  max-width: 360px;
  margin: 4px 24px 16px 0;
  border-radius: var(--radius);
}

.article-body {
  font-size: 0.95rem;
  line-height: 2;
  color: var(--color-text-secondary);
}

.article-body p {
  margin-bottom: 16px;
}

.article-body img {
  margin: 20px auto;
  max-width: 100%;
}

/* ---------- Product Detail ---------- */
.product-detail-content {
  background: var(--color-white);
  padding: 40px;
  border: 1px solid var(--color-border);
}

.product-detail-hero {
  display: flex;
  gap: 24px;
  margin-bottom: 32px;
}

.product-detail-image {
  flex: 0 0 45%;
  border-radius: var(--radius);
  overflow: hidden;
}

.product-detail-image img {
  width: 100%;
  height: auto;
  display: block;
}

.product-detail-intro {
  flex: 1;
}

.product-detail-intro .product-detail-title {
  margin-bottom: 16px;
}

.product-detail-summary {
  color: var(--color-text-secondary);
  line-height: 1.8;
  font-size: 0.95rem;
}

.product-detail-title {
  font-size: 1.375rem;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--color-primary);
}

.product-detail-body {
  font-size: 0.95rem;
  line-height: 2;
  color: var(--color-text-secondary);
}

.product-detail-body p {
  margin-bottom: 16px;
}

.related-products {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.related-products h3 {
  font-size: 1.1rem;
  margin-bottom: 20px;
}

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

/* product-detail-hero-* aliases (HTML uses these, map to existing flex layout) */
.product-detail-hero-image {
  flex: 0 0 45%;
  border-radius: var(--radius);
  overflow: hidden;
}
.product-detail-hero-image img {
  width: 100%;
  height: auto;
  display: block;
}
.product-detail-hero-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}
.product-detail-hero-info h2,
.product-detail-hero-title {
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-heading);
  margin-bottom: 12px;
  color: var(--color-dark);
  line-height: 1.3;
}
.product-detail-hero-info > p {
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}
.product-detail-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: auto;
}
.product-detail-section {
  margin-top: 32px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
}
.product-detail-section img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  cursor: pointer;
  display: block;
  margin: 16px auto;
}

/* 正文中连续图片自动网格（JS 自动包裹） */
.product-photo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 20px 0;
}
.product-photo-grid img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: 6px;
  cursor: pointer;
  margin: 0;
  transition: transform 0.2s, box-shadow 0.2s;
}
.product-photo-grid img:hover {
  transform: scale(1.03);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
/* 3张以上用3列 */
.product-photo-grid.cols-3 {
  grid-template-columns: repeat(3, 1fr);
}
/* 单张图片不用网格，居中限宽 */
.product-photo-grid.cols-1 {
  display: block;
}
.product-photo-grid.cols-1 img {
  max-width: 680px;
  max-height: 480px;
  margin: 0 auto;
}

/* 产品主图固定尺寸 */
.product-detail-hero-image {
  flex: 0 0 45%;
  aspect-ratio: 4/3;
  max-height: 400px;
  overflow: hidden;
  border-radius: 8px;
  background: #f5f5f5;
}
.product-detail-hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  cursor: pointer;
}

/* 产品图库固定尺寸网格 */
.product-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 24px 0;
}
.product-gallery img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: 6px;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}
.product-gallery img:hover {
  transform: scale(1.03);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

/* Lightbox 图箱 */
.lightbox-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.9);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.lightbox-overlay.active {
  opacity: 1;
  pointer-events: auto;
}
.lightbox-overlay img {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
  border-radius: 4px;
}
.lightbox-close {
  position: absolute;
  top: 20px; right: 24px;
  color: #fff;
  font-size: 36px;
  cursor: pointer;
  background: none;
  border: none;
  line-height: 1;
  z-index: 10000;
}
.lightbox-prev,
.lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: #fff;
  font-size: 48px;
  cursor: pointer;
  background: rgba(255,255,255,0.1);
  border: none;
  border-radius: 50%;
  width: 56px; height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}
.lightbox-prev:hover,
.lightbox-next:hover {
  background: rgba(255,255,255,0.25);
}
.lightbox-prev { left: 20px; }
.lightbox-next { right: 20px; }
.lightbox-counter {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  color: #fff;
  font-size: 14px;
}

@media (max-width: 768px) {
  .product-gallery,
  .product-photo-grid,
  .product-photo-grid.cols-3 {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }
  .lightbox-prev, .lightbox-next {
    width: 40px; height: 40px;
    font-size: 32px;
  }
}

/* Related product cards */
.related-product-card {
  display: block;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  transition: box-shadow 0.2s, transform 0.2s;
}
.related-product-card:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,0.10);
  transform: translateY(-2px);
}
.related-product-image {
  aspect-ratio: 3/2;
  overflow: hidden;
}
.related-product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}
.related-product-card:hover .related-product-image img {
  transform: scale(1.04);
}
.related-product-card h4 {
  font-size: 0.95rem;
  color: var(--color-dark);
  padding: 12px 14px 4px;
  margin: 0;
}
.related-product-card p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  padding: 0 14px 16px;
  margin: 0;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------- Contact Info ---------- */
.contact-info {
  background: var(--color-white);
  padding: 40px;
  border: 1px solid var(--color-border);
}

.contact-hero-image {
  width: 100%;
  aspect-ratio: 16/7;
  overflow: hidden;
  margin-bottom: 32px;
}

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

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 32px;
}

.contact-list-item {
  display: flex;
  gap: 12px;
  font-size: 0.95rem;
}

.contact-list-item .label {
  font-weight: 600;
  color: var(--color-text);
  min-width: 80px;
  flex-shrink: 0;
}

.contact-list-item .value {
  color: var(--color-text-secondary);
}

.contact-qr {
  margin-top: 24px;
}

.contact-qr p {
  font-size: 0.9rem;
  margin-bottom: 12px;
  color: var(--color-text);
  font-weight: 500;
}

.contact-qr-image {
  width: 160px;
  height: 160px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-size: 0.8rem;
}

/* ---------- About Page ---------- */
.about-hero {
  width: 100%;
  aspect-ratio: 16/7;
  overflow: hidden;
  margin-bottom: 32px;
  position: relative;
}

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

.about-content {
  background: var(--color-white);
  padding: 40px;
  border: 1px solid var(--color-border);
}

.about-body {
  font-size: 0.95rem;
  line-height: 2;
  color: var(--color-text-secondary);
}

.about-body p {
  margin-bottom: 16px;
}

.about-phone {
  margin-top: 24px;
  font-size: 1rem;
  color: var(--color-text);
}

.about-phone strong {
  color: var(--color-primary);
}

/* ---------- Pagination ---------- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin-top: 40px;
}

.pagination a,
.pagination span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  font-size: 0.85rem;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  background: var(--color-white);
  transition: all var(--transition);
}

.pagination a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.pagination .active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.pagination .dots {
  border: none;
  background: none;
}

/* ---------- Floating Sidebar Contact Button ---------- */
.floating-contact {
  position: fixed;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 14px 10px;
  background: var(--color-cta);
  color: var(--color-white);
  border-radius: var(--radius) 0 0 var(--radius);
  cursor: pointer;
  box-shadow: -2px 2px 10px rgba(0,0,0,0.15);
  transition: background 0.3s;
  writing-mode: vertical-lr;
}

.floating-contact:hover {
  background: #b91c1f;
}

.floating-contact svg {
  fill: var(--color-white);
  flex-shrink: 0;
  writing-mode: horizontal-tb;
}

.floating-contact span {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
}

/* ---------- Bottom Shared Sections (Products + News) ---------- */
.bottom-products {
  background: var(--color-white);
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.bottom-news {
  background: var(--color-bg);
  padding: 40px 0;
}

.bottom-news .section-header h2::after {
  display: none;
}

.bottom-news .section-header h2 {
  font-size: 1.1rem;
  padding-bottom: 0;
}

/* ---------- Footer ---------- */
.site-footer {
  background: linear-gradient(280deg, #0693E3 0%, #142D6D 100%);
  color: rgba(255,255,255,0.7);
  padding: 0;
}

.footer-main {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: 40px;
  padding: 40px 0;
  align-items: start;
}

.footer-info {
  font-size: 0.85rem;
  line-height: 1.9;
}

.footer-info p {
  color: rgba(255,255,255,0.6);
  margin-bottom: 4px;
}

.footer-info strong {
  color: rgba(255,255,255,0.85);
}

.footer-brand {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.footer-brand-name {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.05em;
}

.footer-brand-icon {
  width: 80px;
  height: 80px;
  border: 2px solid rgba(255,255,255,0.2);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.4);
  font-size: 0.7rem;
}

.footer-qr {
  text-align: center;
}

.footer-qr-image {
  width: 100px;
  height: 100px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  margin: 0 auto 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.4);
  font-size: 0.7rem;
}

.footer-qr p {
  color: rgba(255,255,255,0.5);
  font-size: 0.8rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 16px 0;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
}

.footer-bottom a {
  color: rgba(255,255,255,0.35);
}

.footer-bottom a:hover {
  color: rgba(255,255,255,0.6);
}

/* ---------- Contact Modal ---------- */
.contact-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 9998;
  opacity: 0;
  visibility: hidden;
  transition: all 0.35s ease;
}

.contact-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.contact-modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  z-index: 9999;
  background: var(--color-white);
  width: 460px;
  max-width: 90vw;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  opacity: 0;
  visibility: hidden;
  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.contact-modal.active {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, -50%) scale(1);
}

.contact-modal-header {
  background: linear-gradient(280deg, #0693E3 0%, #142D6D 100%);
  color: #fff;
  padding: 24px 28px 20px;
  position: relative;
}

.contact-modal-header h3 {
  color: #fff;
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.5;
}

.contact-modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.15);
  border-radius: 50%;
  color: #fff;
  font-size: 1.2rem;
  transition: background var(--transition);
  cursor: pointer;
  border: none;
}

.contact-modal-close:hover {
  background: rgba(255,255,255,0.3);
}

.contact-modal-body {
  padding: 28px;
}

.contact-modal-form .form-group {
  margin-bottom: 16px;
}

.contact-modal-form label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.contact-modal-form input,
.contact-modal-form textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition);
}

.contact-modal-form input:focus,
.contact-modal-form textarea:focus {
  border-color: var(--color-primary);
}

.contact-modal-form textarea {
  resize: vertical;
  min-height: 80px;
}

.contact-modal-form .btn-submit {
  width: 100%;
  padding: 12px;
  background: var(--color-cta);
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.05em;
}

.contact-modal-form .btn-submit:hover {
  background: var(--color-cta-hover);
}

.contact-modal-hotline {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-cta);
  font-weight: 600;
}

.contact-modal-hotline span {
  font-size: 1.1rem;
  letter-spacing: 0.02em;
}

/* Modal QR Code */
.contact-modal-qr {
  margin-top: 16px;
  text-align: center;
}

img.contact-modal-qr-image {
  width: 150px;
  height: 150px;
  border: 1px solid var(--color-border);
  margin: 0 auto 8px;
  display: block;
  object-fit: contain;
}

.contact-modal-qr p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

/* Blue centered submit button */
.btn-submit--blue {
  background: var(--color-primary);
  width: auto;
  display: block;
  margin: 0 auto;
  padding: 10px 60px;
}

.btn-submit--blue:hover {
  background: var(--color-primary-dark);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 24px;
  font-size: 0.9rem;
  font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

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

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

.btn-cta {
  background: var(--color-cta);
  color: #fff;
  border-color: var(--color-cta);
}

.btn-cta:hover {
  background: var(--color-cta-hover);
  border-color: var(--color-cta-hover);
}

/* ---------- Page Banner (inner pages) ---------- */
.page-banner {
  background: linear-gradient(280deg, #0693E3 0%, #142D6D 100%);
  padding: 32px 0;
  text-align: center;
}

.page-banner h1,
.page-banner .page-banner-title {
  color: #fff;
  font-size: 1.75rem;
  font-weight: 700;
}

.page-banner .breadcrumb,
.page-banner .breadcrumb a,
.page-banner .breadcrumb .sep,
.page-banner .breadcrumb .current {
  color: rgba(255,255,255,0.85);
}

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

/* ---------- Trust Bar ---------- */
.trust-bar {
  background: var(--color-primary-dark);
  padding: 32px 0;
}

.trust-bar .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.trust-item {
  color: #fff;
}

.trust-item-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}

.trust-item-label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
  margin-top: 4px;
}

/* ---------- Hero CTA Buttons ---------- */
.hero-buttons {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- Industries Grid ---------- */
.industries-grid,
.industry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.industry-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition);
}

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

.industry-card-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 16px;
  background: var(--color-primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.industry-card-icon svg {
  width: 28px;
  height: 28px;
  fill: var(--color-primary);
}

.industry-card h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.industry-card p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ---------- Industries Landing Page ---------- */
.industries-grid--full {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.industry-card-full {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  text-decoration: none;
  color: inherit;
  transition: all var(--transition);
}
.industry-card-full:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.industry-card-full-icon {
  flex-shrink: 0;
  width: 72px;
  height: 72px;
  background: var(--color-primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.industry-card-full-icon svg {
  fill: var(--color-primary);
}
.industry-card-full-body h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
  color: var(--color-text);
}
.industry-card-full-body p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
}
.industry-card-link {
  font-size: 0.85rem;
  color: var(--color-primary);
  font-weight: 600;
}

/* ---------- Why Choose Us ---------- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.why-card {
  text-align: center;
  padding: 24px 16px;
}

.why-card-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.why-card-icon svg {
  width: 28px;
  height: 28px;
  fill: var(--color-primary);
}

.why-card h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.why-card p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ---------- CTA Section ---------- */
.cta-section {
  background: linear-gradient(280deg, #0693E3 0%, #142D6D 100%);
  padding: 60px 0;
  text-align: center;
}

.cta-section h2 {
  color: #fff;
  font-size: 1.75rem;
  margin-bottom: 12px;
}

.cta-section p {
  color: rgba(255,255,255,0.8);
  font-size: 1.05rem;
  margin-bottom: 28px;
}

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

.btn-whatsapp {
  background: #25D366;
  color: #fff;
  border-color: #25D366;
}

.btn-whatsapp:hover {
  background: #1da851;
  border-color: #1da851;
}

/* ---------- WhatsApp Floating Button ---------- */
.whatsapp-float {
  position: fixed;
  right: 20px;
  bottom: 24px;
  z-index: 999;
  width: 56px;
  height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(37,211,102,0.4);
  cursor: pointer;
  transition: all 0.3s;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 24px rgba(37,211,102,0.5);
}

.whatsapp-float svg {
  width: 28px;
  height: 28px;
  fill: #fff;
}

/* ---------- FAQ Accordion ---------- */
.faq-section {
  margin-top: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--color-border);
}

.faq-section h2,
.faq-section h3 {
  margin-bottom: 24px;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  background: var(--color-white);
  transition: box-shadow var(--transition);
}

.faq-item:hover {
  box-shadow: var(--shadow-sm);
}

.faq-item.active {
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(49,130,206,0.1);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  background: var(--color-white);
  cursor: pointer;
  border: none;
  text-align: left;
  font-family: inherit;
  gap: 16px;
  transition: all var(--transition);
}

.faq-question:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  transition: all 0.3s;
}

.faq-item.active .faq-question {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  background: var(--color-primary);
  color: #fff;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer-inner {
  padding: 20px 24px;
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--color-text-secondary);
  background: var(--color-primary-light);
}

/* ---------- Specifications Table ---------- */
.spec-table-wrapper,
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 24px 0;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  min-width: 600px;
}

.spec-table th,
.spec-table td {
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  text-align: left;
}

.spec-table th {
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
}

.spec-table tr:nth-child(even) {
  background: var(--color-primary-light);
}

/* ---------- Application Tags ---------- */
.app-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.app-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 20px;
  transition: all var(--transition);
}

.app-tag:hover {
  background: var(--color-primary);
  color: #fff;
}

/* ---------- Footer Multi-Column (English) ---------- */
.footer-columns {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding: 48px 0 32px;
}

.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
  padding: 4px 0;
  transition: color var(--transition);
}

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

.footer-col p {
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
  line-height: 1.8;
}

.footer-col .footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.footer-col .footer-logo-img {
  width: 36px;
  height: 36px;
  object-fit: contain;
  border-radius: 4px;
  flex-shrink: 0;
}

.footer-col .footer-logo-text {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
}

/* ---------- Dropdown Nav ---------- */
.nav-item {
  position: relative;
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.25s ease;
  z-index: 100;
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown a {
  display: block;
  padding: 10px 20px;
  font-size: 0.88rem;
  font-weight: 400;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
  height: auto;
}

.nav-dropdown a:last-child {
  border-bottom: none;
}

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

.nav-dropdown a::after {
  display: none;
}

/* ---------- Blog Article Styles ---------- */
.article-toc {
  background: var(--color-primary-light);
  padding: 20px 24px;
  margin-bottom: 32px;
  border-left: 3px solid var(--color-primary);
}

.article-toc h4 {
  font-size: 0.95rem;
  margin-bottom: 12px;
}

.article-toc a {
  display: block;
  padding: 4px 0;
  font-size: 0.88rem;
  color: var(--color-primary);
}

.article-toc a:hover {
  text-decoration: underline;
}

.article-author {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--color-bg);
  margin-top: 40px;
  border-radius: var(--radius-md);
}

.article-author-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.article-author-avatar svg {
  width: 28px;
  height: 28px;
  fill: var(--color-primary);
}

.article-author-info h4 {
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.article-author-info p {
  font-size: 0.85rem;
}

/* ---------- Quote Form Page ---------- */
.quote-form {
  max-width: 700px;
  margin: 0 auto;
  background: var(--color-white);
  padding: 40px;
  border: 1px solid var(--color-border);
}

.quote-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

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

.quote-form label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.quote-form input,
.quote-form select,
.quote-form textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition);
  background: var(--color-white);
}

.quote-form input:focus,
.quote-form select:focus,
.quote-form textarea:focus {
  border-color: var(--color-primary);
}

.quote-form textarea {
  resize: vertical;
  min-height: 100px;
}

.quote-form select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%234a5568' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

/* ---------- Industry Detail Page ---------- */
.challenges-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 24px 0;
}

.challenge-item {
  display: flex;
  gap: 12px;
  padding: 16px;
  background: var(--color-bg);
  border-radius: var(--radius);
}

.challenge-item svg {
  width: 20px;
  height: 20px;
  fill: var(--color-cta);
  flex-shrink: 0;
  margin-top: 2px;
}

.challenge-item p {
  font-size: 0.9rem;
  line-height: 1.6;
}

.solution-steps {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 24px 0;
}

.solution-step {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.solution-step-number {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.solution-step-content h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.solution-step-content p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .two-col-layout {
    grid-template-columns: 1fr;
  }
  .hero .container {
    grid-template-columns: 1fr;
  }
  .hero-carousel {
    height: 300px;
    max-height: 300px;
  }
  .carousel-slide img {
    height: 300px;
  }
  .footer-main {
    grid-template-columns: 1fr 1fr;
  }
  .case-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .product-grid-h {
    gap: 16px;
  }
  .product-grid-h--cols3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .trust-bar .container { grid-template-columns: repeat(2, 1fr); }
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
  .industries-grid--full { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-columns { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root {
    --header-height: 56px;
    --topbar-height: 36px;
  }

  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.25rem; }

  .topbar {
    font-size: 0.75rem;
  }

  .main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 260px;
    height: 100vh;
    background: var(--color-white);
    flex-direction: column;
    gap: 0;
    box-shadow: -4px 0 20px rgba(0,0,0,0.1);
    transition: right 0.35s ease;
    padding-top: 60px;
    z-index: 1050;
  }

  .main-nav.open {
    right: 0;
  }

  .main-nav a {
    height: auto;
    padding: 14px 24px;
    border-bottom: 1px solid var(--color-border);
  }

  .main-nav a::after {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .hero .container {
    grid-template-columns: 1fr;
  }

  .hero-content {
    padding: 32px 0;
  }

  .hero-carousel {
    height: 250px;
    max-height: 250px;
    order: -1;
  }
  .carousel-slide img {
    height: 250px;
  }

  .product-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .product-grid--2col {
    grid-template-columns: 1fr;
  }

  .product-tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    flex-wrap: nowrap;
  }

  .product-tab {
    white-space: nowrap;
    flex-shrink: 0;
    padding: 10px 20px;
    font-size: 0.85rem;
  }

  .case-grid {
    grid-template-columns: 1fr;
  }

  .news-card-full {
    flex-direction: column;
  }

  .news-card-full-image {
    width: 100%;
    height: 200px;
    order: -1;
  }

  .product-grid-h {
    grid-template-columns: 1fr;
  }

  .product-card-h2 {
    flex-direction: column;
  }

  .product-card-h2-image {
    width: 100%;
    height: 180px;
  }

  .product-card-h2-body {
    padding: 16px;
  }

  .news-card-home {
    flex-direction: column;
  }

  .news-card-home-image {
    width: 100%;
    height: 180px;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 24px;
    text-align: center;
  }

  .article-content,
  .product-detail-content,
  .contact-info,
  .about-content {
    padding: 20px;
  }

  .product-detail-hero {
    flex-direction: column;
  }

  .product-detail-image {
    flex: none;
  }

  .related-products-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 40px 0;
  }

  .pagination {
    flex-wrap: wrap;
  }

  .contact-modal {
    width: 95vw;
  }

  /* Mobile topbar simplification */
  .topbar .container {
    gap: 4px;
    font-size: 0.7rem;
  }

  .topbar-phone {
    white-space: nowrap;
  }

  .topbar-divider {
    margin: 0 4px;
  }

  .topbar .topbar-text-hint {
    display: none;
  }

  .topbar-cta {
    padding: 3px 10px;
    font-size: 0.7rem;
  }

  /* Mobile floating button */
  .floating-contact {
    writing-mode: horizontal-tb;
    width: 48px;
    height: 48px;
    border-radius: 50% 0 0 50%;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    top: auto;
    bottom: 120px;
    transform: none;
  }

  .floating-contact svg {
    width: 22px;
    height: 22px;
  }

  .floating-contact span {
    display: none;
  }

  .trust-bar .container { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .trust-item-number { font-size: 1.5rem; }
  .industries-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr 1fr; }
  .hero-buttons { flex-direction: column; }
  .hero-buttons .btn { text-align: center; justify-content: center; }
  .cta-buttons { flex-direction: column; align-items: center; }
  .footer-columns { grid-template-columns: 1fr; gap: 24px; }
  .quote-form .form-row { grid-template-columns: 1fr; }
  .challenges-grid { grid-template-columns: 1fr; }

  /* Nav dropdown inside mobile drawer */
  .nav-item {
    display: flex;
    flex-direction: column;
  }
  .nav-item > a {
    padding: 14px 24px;
    border-bottom: 1px solid var(--color-border);
  }
  .nav-dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    min-width: auto;
    display: none;
    background: #f8fafc;
  }
  .nav-dropdown a {
    padding-left: 40px;
    font-size: 0.85rem;
  }

  /* Product detail hero buttons stack */
  .product-detail-buttons {
    flex-direction: column;
  }
  .product-detail-buttons .btn {
    text-align: center;
    justify-content: center;
  }

  /* Product detail table responsive */
  .product-detail-section table {
    display: table;
    width: 100%;
    overflow-wrap: break-word;
    word-break: break-all;
  }
  .product-detail-section {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Why choose grid single column on small screens */
  .why-grid { grid-template-columns: 1fr; }

  /* Product grid single column on small screens */
  .product-grid {
    grid-template-columns: 1fr;
  }

  /* Override Chinese floating contact with WhatsApp button on English site */
  .floating-contact { display: none; }
}

/* ---------- Bottom News Grid (3x3) ---------- */
.bottom-news-grid {
  background: var(--color-gray);
  padding: 48px 0;
}

.news-grid-3x3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px 24px;
}

.news-grid-item {
  display: block;
  padding: 10px 0;
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.9rem;
  line-height: 1.5;
  border-bottom: 1px dashed var(--color-border);
  transition: color 0.2s;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.news-grid-item:hover {
  color: var(--color-primary);
}

@media (max-width: 768px) {
  .news-grid-3x3 {
    grid-template-columns: 1fr;
  }
}

/* ---------- About Contact Person ---------- */
.about-contact-person {
  margin-top: 24px;
  font-size: 1rem;
  color: var(--color-text);
}

.about-contact-person strong {
  color: var(--color-heading);
}

/* ---------- About Page (English) ---------- */
.about-hero-image {
  width: 100%;
  aspect-ratio: 16/7;
  overflow: hidden;
  margin-bottom: 32px;
}

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

.about-intro {
  margin-bottom: 40px;
}

.about-intro h2 {
  font-size: 1.375rem;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary);
}

.about-intro p {
  font-size: 0.95rem;
  line-height: 2;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.trust-bar--about {
  background: var(--color-primary-light);
  padding: 32px 24px;
  margin-bottom: 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.trust-bar--about .trust-item-number {
  color: var(--color-primary);
}

.trust-bar--about .trust-item-label {
  color: var(--color-text-secondary);
}

.about-contact {
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.about-contact h2 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.about-contact > p {
  margin-bottom: 20px;
}

.about-contact-details {
  margin-bottom: 20px;
}

.about-contact-details p {
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.about-contact-details a {
  color: var(--color-primary);
}

.about-contact-details a:hover {
  text-decoration: underline;
}

/* ---------- Contact Page (English) ---------- */
.contact-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.contact-details {
  margin-bottom: 0;
}

.contact-details h2 {
  font-size: 1.25rem;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary);
}

.contact-detail-item {
  display: flex;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.95rem;
}

.contact-detail-item .label {
  font-weight: 600;
  color: var(--color-text);
  min-width: 120px;
  flex-shrink: 0;
}

.contact-detail-item .value {
  color: var(--color-text-secondary);
}

.contact-detail-item .value a {
  color: var(--color-primary);
}

.contact-detail-item .value a:hover {
  text-decoration: underline;
}

.contact-map {
  width: 100%;
  margin-bottom: 32px;
}

.location-card {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--color-border);
}

.location-card-header {
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-primary) 100%);
  color: #fff;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.125rem;
  font-weight: 600;
}

.location-card-body {
  padding: 28px 24px;
  background: #fff;
  background-image:
    radial-gradient(circle at 100% 0%, rgba(49, 130, 206, 0.04) 0%, transparent 50%),
    radial-gradient(circle at 0% 100%, rgba(20, 45, 109, 0.04) 0%, transparent 50%);
}

.location-card-address {
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}

.location-card-address h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 12px;
  line-height: 1.4;
}

.location-card-address p {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.6;
  margin: 0;
}

.location-card-region {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-light);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.location-card-directions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primary);
  color: #fff;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s, transform 0.2s;
  width: 100%;
  justify-content: center;
}

.location-card-directions:hover {
  background: var(--color-dark);
  transform: translateY(-1px);
}

/* ---------- Quote Form Page (English additions) ---------- */
.quote-form-header {
  text-align: center;
  margin-bottom: 32px;
}

.quote-form-header h2 {
  font-size: 1.375rem;
  margin-bottom: 8px;
}

.quote-form-header p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

.product-hint {
  background: var(--color-primary-light);
  border-left: 3px solid var(--color-primary);
  padding: 12px 16px;
  margin-bottom: 20px;
  font-size: 0.95rem;
  color: var(--color-text);
  border-radius: var(--radius);
}

.quote-form-body .btn-cta {
  width: 100%;
  justify-content: center;
  padding: 14px 24px;
  font-size: 1rem;
}

.quote-alternative {
  max-width: 700px;
  margin: 32px auto 0;
  text-align: center;
  padding: 24px;
  background: var(--color-bg);
  border-radius: var(--radius-md);
}

.quote-alternative h3 {
  font-size: 1.05rem;
  margin-bottom: 16px;
}

.quote-alt-items {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}

.quote-alt-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
}

.quote-alt-item a {
  color: var(--color-primary);
  font-weight: 600;
}

.quote-alt-item a:hover {
  text-decoration: underline;
}

.quote-alt-item svg {
  width: 20px;
  height: 20px;
  fill: var(--color-primary);
  flex-shrink: 0;
}

/* ---------- Responsive: About/Contact/Quote additions ---------- */
@media (max-width: 768px) {
  .trust-bar--about {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    padding: 24px 16px;
  }
  .contact-info {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .contact-detail-item {
    flex-direction: column;
    gap: 4px;
  }
  .contact-detail-item .label {
    min-width: auto;
  }
  .quote-alt-items {
    flex-direction: column;
    gap: 16px;
  }
}

/* ---------- Utility ---------- */
.text-center { text-align: center; }
.mt-20 { margin-top: 20px; }
.mt-40 { margin-top: 40px; }
.mb-20 { margin-bottom: 20px; }
.mb-40 { margin-bottom: 40px; }

/* ---------- Product Detail Body Content (tables, lists, headings) ---------- */
.product-detail-section {
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--color-text-secondary);
}
.product-detail-section h2 {
  font-size: 1.375rem;
  color: var(--color-text);
  margin: 32px 0 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-primary);
}
.product-detail-section h2:first-child {
  margin-top: 0;
}
.product-detail-section h3 {
  font-size: 1.125rem;
  color: var(--color-text);
  margin: 28px 0 12px;
  position: relative;
  padding-left: 14px;
}
.product-detail-section h3::before {
  content: '';
  position: absolute;
  left: 0;
  top: 3px;
  bottom: 3px;
  width: 4px;
  background: var(--color-primary);
  border-radius: 2px;
}
.product-detail-section p {
  margin-bottom: 14px;
  color: var(--color-text-secondary);
}
.product-detail-section ul,
.product-detail-section ol {
  list-style: none;
  padding: 0;
  margin: 0 0 20px 0;
}
.product-detail-section ul li {
  position: relative;
  padding: 8px 0 8px 24px;
  border-bottom: 1px solid #f0f4f8;
}
.product-detail-section ul li:last-child {
  border-bottom: none;
}
.product-detail-section ul li::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 16px;
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
}
.product-detail-section ol {
  counter-reset: step-counter;
}
.product-detail-section ol li {
  position: relative;
  padding: 10px 0 10px 36px;
  border-bottom: 1px solid #f0f4f8;
  counter-increment: step-counter;
}
.product-detail-section ol li:last-child {
  border-bottom: none;
}
.product-detail-section ol li::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  top: 8px;
  width: 24px;
  height: 24px;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-detail-section li strong {
  color: var(--color-text);
}

/* Product detail tables — clean professional style */
.product-detail-section table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0 24px;
  font-size: 0.9rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}
.product-detail-section table th,
.product-detail-section table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}
.product-detail-section table th {
  background: var(--color-primary-dark);
  color: #fff;
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.product-detail-section table tr:nth-child(even) {
  background: #f8fafc;
}
.product-detail-section table tr:hover {
  background: var(--color-primary-light);
}
.product-detail-section table tr:last-child td {
  border-bottom: none;
}

/* Product card — no-image placeholder fix */
.product-card-image .no-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #e8f0fe 0%, #f0f4f8 100%);
  color: var(--color-primary);
}
.product-card-image .no-image-placeholder svg {
  width: 48px;
  height: 48px;
  opacity: 0.5;
}

/* Product card h2 no-image (industry page, home page) */
.product-card-h2-image .no-image-placeholder {
  width: 100%;
  height: 100%;
  min-height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #e8f0fe 0%, #f0f4f8 100%);
  color: var(--color-primary);
}
.product-card-h2-image .no-image-placeholder svg {
  width: 48px;
  height: 48px;
  opacity: 0.5;
}

/* Product detail hero no-image */
.product-detail-hero-image .no-image-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #e8f0fe 0%, #f0f4f8 100%);
  border-radius: var(--radius-md);
  color: var(--color-primary);
}
.product-detail-hero-image .no-image-placeholder svg {
  width: 80px;
  height: 80px;
  opacity: 0.4;
}

/* Related product no-image */
.related-product-image .no-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #e8f0fe 0%, #f0f4f8 100%);
  color: var(--color-primary);
}
.related-product-image .no-image-placeholder svg {
  width: 40px;
  height: 40px;
  opacity: 0.4;
}

/* ---------- Responsive: Product Detail Body ---------- */
@media (max-width: 768px) {
  .product-detail-section h2 {
    font-size: 1.15rem;
    margin: 24px 0 12px;
  }
  .product-detail-section h3 {
    font-size: 1rem;
    margin: 20px 0 10px;
  }
  .product-detail-section table th,
  .product-detail-section table td {
    padding: 8px 12px;
    font-size: 0.8rem;
  }
  .product-detail-hero-image img {
    width: 100%;
    height: auto;
  }
  .product-detail-hero-title {
    font-size: 1.25rem;
  }
  .related-products-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
}

@media (max-width: 480px) {
  .topbar .container {
    justify-content: center;
  }
  .trust-bar .container {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    padding: 20px 16px;
  }
  .trust-item-number { font-size: 1.25rem; }
  .related-products-grid {
    grid-template-columns: 1fr;
  }
  .product-detail-section table {
    font-size: 0.78rem;
  }
}

/* ================================================================
   Blog Post Detail — Two-Column Layout
   ================================================================ */

/* Layout: main + sidebar */
.post-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
  align-items: start;
}

/* Main article card */
.post-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 40px 44px;
}

/* Title */
.post-title {
  font-size: 1.75rem;
  line-height: 1.35;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 16px;
}

/* Meta bar */
.post-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 20px;
  padding-bottom: 20px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.82rem;
  color: var(--color-text-secondary);
}
.post-meta-cat {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.post-meta-item {
  display: flex;
  align-items: center;
  gap: 5px;
}
.post-meta-item svg { opacity: 0.55; flex-shrink: 0; }

/* Featured image */
.post-featured-image {
  margin-bottom: 32px;
  border-radius: var(--radius-md);
  overflow: hidden;
}
.post-featured-image img {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
  display: block;
}

/* ── Article Body Typography ──────────────────────────────── */
.post-body {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--color-text);
}
.post-body p { margin-bottom: 1.2em; }
.post-body h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-dark);
  margin: 2em 0 0.7em;
  padding-left: 14px;
  border-left: 4px solid var(--color-primary);
  line-height: 1.4;
}
.post-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin: 1.6em 0 0.6em;
}
.post-body h4 {
  font-size: 1rem;
  font-weight: 700;
  margin: 1.4em 0 0.5em;
}
.post-body ul,
.post-body ol {
  margin: 0 0 1.2em 0;
  padding-left: 1.4em;
}
.post-body ul { list-style: none; padding-left: 0; }
.post-body ul li {
  padding-left: 1.3em;
  position: relative;
  margin-bottom: 0.55em;
}
.post-body ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  flex-shrink: 0;
}
.post-body ol li { margin-bottom: 0.55em; }
.post-body li strong { color: var(--color-dark); }
.post-body strong { font-weight: 600; }
.post-body a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 2px; }
.post-body a:hover { color: var(--color-primary-dark); }
.post-body blockquote {
  margin: 1.5em 0;
  padding: 16px 20px;
  background: var(--color-primary-light);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--color-text-secondary);
  font-style: italic;
}
.post-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 0.9rem;
}
.post-body table th {
  background: var(--color-primary);
  color: #fff;
  padding: 10px 14px;
  text-align: left;
  font-weight: 600;
}
.post-body table td {
  padding: 9px 14px;
  border-bottom: 1px solid var(--color-border);
}
.post-body table tr:nth-child(even) td { background: var(--color-bg); }
.post-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  margin: 1em auto;
  display: block;
}
/* FAQ section styling */
.post-body h2:has(+ h3) + h3,
.post-body h3 + p { margin-top: 0; }

/* Author bio */
.post-author {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 20px 24px;
}
.post-author-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-primary);
}
.post-author-avatar svg { stroke: var(--color-primary); }
.post-author-info strong {
  font-size: 0.95rem;
  display: block;
  margin-bottom: 4px;
  color: var(--color-dark);
}
.post-author-info p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin: 0;
}

/* ── Related Articles ─────────────────────────────────────── */
.post-related { margin-top: 32px; }
.post-related-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--color-dark);
}
.post-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.post-related-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--transition), transform var(--transition);
  color: var(--color-text);
}
.post-related-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.post-related-card-img {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-bg);
}
.post-related-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
  display: block;
}
.post-related-card:hover .post-related-card-img img { transform: scale(1.04); }
.post-related-card-img--noimg {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-border);
}
.post-related-card-body {
  padding: 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.post-related-card-date {
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-bottom: 8px;
  display: block;
}
.post-related-card-body h4 {
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-dark);
  margin-bottom: 8px;
  flex: 1;
}
.post-related-card:hover h4 { color: var(--color-primary); }
.post-related-card-body p {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* ── Sidebar ──────────────────────────────────────────────── */
.post-sidebar {
  position: sticky;
  top: 88px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Widget base */
.post-sidebar-widget {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.post-sidebar-widget-title {
  background: var(--color-primary);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 7px;
}
.post-sidebar-widget-title svg { opacity: 0.85; flex-shrink: 0; }

/* Table of contents */
.post-toc {
  padding: 12px 0;
  max-height: 360px;
  overflow-y: auto;
}
.post-toc a {
  display: block;
  padding: 6px 16px;
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  transition: background var(--transition), color var(--transition);
  border-left: 3px solid transparent;
}
.post-toc a:hover,
.post-toc a.active {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-left-color: var(--color-primary);
}

/* CTA widget */
.post-sidebar-cta {
  background: var(--color-primary-dark);
  color: #fff;
  border-radius: var(--radius-md);
  padding: 24px 20px;
  text-align: center;
}
.post-sidebar-cta-icon {
  width: 52px;
  height: 52px;
  background: rgba(255,255,255,0.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
  color: #fff;
}
.post-sidebar-cta h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #fff;
}
.post-sidebar-cta p {
  font-size: 0.82rem;
  line-height: 1.65;
  color: rgba(255,255,255,0.75);
  margin-bottom: 16px;
}
.post-sidebar-cta-btn {
  display: block;
  width: 100%;
  text-align: center;
  font-size: 0.9rem;
  padding: 11px 0;
}
.post-sidebar-cta-link {
  display: block;
  margin-top: 12px;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.65);
  text-align: center;
  transition: color var(--transition);
}
.post-sidebar-cta-link:hover { color: #fff; }

/* Share */
.post-share {
  padding: 12px 16px;
  display: flex;
  gap: 10px;
}
.post-share-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 8px 6px;
  border-radius: var(--radius);
  transition: opacity var(--transition);
  color: #fff;
}
.post-share-btn:hover { opacity: 0.88; }
.post-share-btn--linkedin { background: #0A66C2; }
.post-share-btn--twitter  { background: #000; }
.post-share-btn--weibo   { background: #E6162D; }
.post-share-btn--wechat  { background: #07C160; border: none; cursor: pointer; }
.post-share-btn--qq      { background: #12B7F5; }
.post-share-btn--copy    { background: #64748b; border: none; cursor: pointer; }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 1024px) {
  .post-layout { grid-template-columns: 1fr 260px; gap: 24px; }
  .post-card { padding: 32px; }
}

@media (max-width: 768px) {
  .post-layout { grid-template-columns: 1fr; }
  .post-sidebar { position: static; }
  /* Move sidebar CTA before sidebar widgets on mobile */
  .post-card { padding: 20px 18px; }
  .post-title { font-size: 1.3rem; }
  .post-body h2 { font-size: 1.15rem; }
  .post-related-grid { grid-template-columns: 1fr; }
}

/* ================================================================
   ABOUT PAGE
   ================================================================ */

/* § 1 Hero Split */
.about-hero-section {
  background: #fff;
  padding: 72px 0;
}
.about-hero-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.about-hero-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 16px;
}
.about-hero-h2 {
  font-size: 2rem;
  font-weight: 700;
  color: #0f2545;
  line-height: 1.25;
  margin: 0 0 18px;
}
.about-hero-text p {
  color: #4a5568;
  line-height: 1.75;
  margin-bottom: 14px;
}
.about-hero-badges {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 24px 0;
}
.about-badge {
  background: #f0f6ff;
  border: 1px solid #c3d9f7;
  border-radius: 8px;
  padding: 10px 18px;
  font-size: 0.85rem;
  color: #2d4a7a;
}
.about-badge strong {
  display: block;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.1;
}
.about-hero-btns {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 8px;
}
.about-hero-img img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  display: block;
  box-shadow: 0 8px 32px rgba(0,0,0,.12);
}
.about-hero-img-caption {
  font-size: 0.78rem;
  color: #718096;
  text-align: center;
  margin-top: 10px;
  font-style: italic;
}

/* § 2 Capabilities */
.about-section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}
.about-section-header h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: #0f2545;
  margin-bottom: 12px;
}
.about-section-header p {
  color: #4a5568;
  font-size: 1rem;
  line-height: 1.65;
}
.about-caps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.about-cap-card {
  background: #fff;
  border-radius: 12px;
  padding: 32px 24px;
  text-align: center;
  border: 1px solid #e8edf5;
  transition: box-shadow var(--transition), transform var(--transition);
}
.about-cap-card:hover {
  box-shadow: 0 6px 24px rgba(0,0,0,.09);
  transform: translateY(-3px);
}
.about-cap-icon {
  width: 56px;
  height: 56px;
  background: #e8f2fd;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  color: var(--color-primary);
}
.about-cap-icon svg { width: 26px; height: 26px; }
.about-cap-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: #0f2545;
  margin-bottom: 10px;
}
.about-cap-card p {
  font-size: 0.875rem;
  color: #4a5568;
  line-height: 1.65;
  margin: 0;
}

/* § 3 Stats Strip */
.about-stats-strip {
  background: #0f2545;
  padding: 52px 0;
}
.about-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.about-stat-num {
  display: block;
  font-size: 3rem;
  font-weight: 800;
  color: #fff;
  line-height: 1;
  margin-bottom: 10px;
}
.about-stat-label {
  font-size: 0.875rem;
  color: rgba(255,255,255,.65);
  line-height: 1.4;
}

/* § 4 Product Showcase */
.about-products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.about-product-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid #e8edf5;
  text-decoration: none;
  color: inherit;
  transition: box-shadow var(--transition), transform var(--transition);
}
.about-product-card:hover {
  box-shadow: 0 8px 28px rgba(0,0,0,.10);
  transform: translateY(-4px);
}
.about-product-img {
  aspect-ratio: 3/2;
  overflow: hidden;
  background: #f7f9fc;
}
.about-product-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.about-product-card:hover .about-product-img img {
  transform: scale(1.04);
}
.about-product-info {
  padding: 20px 22px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.about-product-info h3 {
  font-size: 1rem;
  font-weight: 700;
  color: #0f2545;
  margin-bottom: 8px;
}
.about-product-info p {
  font-size: 0.85rem;
  color: #4a5568;
  line-height: 1.6;
  flex: 1;
  margin-bottom: 12px;
}
.about-product-link {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-primary);
}

/* § 5 Engineering Cases */
.about-cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.about-case-card {
  border-radius: 10px;
  overflow: hidden;
  position: relative;
}
.about-case-card img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  display: block;
  transition: transform .4s ease;
}
.about-case-card:hover img {
  transform: scale(1.04);
}
.about-case-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(15,37,69,.82));
  color: #fff;
  font-size: 0.8rem;
  padding: 32px 14px 12px;
  font-weight: 500;
}
.about-cases-cta {
  text-align: center;
  margin-top: 36px;
}

/* § 6 Philosophy */
.about-philosophy {
  background: linear-gradient(135deg, #f0f6ff 0%, #e8edf8 100%);
  padding: 72px 0;
}
.about-philosophy-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.about-philosophy-quote {
  position: relative;
}
.about-philosophy-quote blockquote {
  font-size: 1.3rem;
  font-weight: 600;
  color: #0f2545;
  line-height: 1.5;
  margin: 12px 0 16px;
  font-style: italic;
}
.about-philosophy-quote cite {
  font-size: 0.85rem;
  color: #718096;
}
.about-phil-item {
  padding: 18px 0;
  border-bottom: 1px solid #d4dff0;
}
.about-phil-item:last-child { border-bottom: none; }
.about-phil-item strong {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
  color: #0f2545;
  margin-bottom: 6px;
}
.about-phil-item span {
  font-size: 0.875rem;
  color: #4a5568;
  line-height: 1.6;
}

/* § 7 CTA */
.about-cta-section {
  background: linear-gradient(135deg, #0f2545 0%, #1a3a6e 100%);
  padding: 80px 0;
  text-align: center;
  color: #fff;
}
.about-cta-section h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: #fff;
}
.about-cta-section > .container > p {
  font-size: 1rem;
  color: rgba(255,255,255,.8);
  max-width: 580px;
  margin: 0 auto 32px;
  line-height: 1.7;
}
.about-cta-contacts {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}
.about-cta-contact-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,.9);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition);
}
.about-cta-contact-item:hover { color: #fff; }
.about-cta-contact-item svg { flex-shrink: 0; }

/* About Responsive */
@media (max-width: 1024px) {
  .about-caps-grid { grid-template-columns: repeat(2, 1fr); }
  .about-hero-h2 { font-size: 1.65rem; }
}
@media (max-width: 768px) {
  .about-hero-split { grid-template-columns: 1fr; gap: 32px; }
  .about-hero-section { padding: 48px 0; }
  .about-hero-h2 { font-size: 1.4rem; }
  .about-caps-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .about-cap-card { padding: 22px 16px; }
  .about-stats-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .about-stat-num { font-size: 2.2rem; }
  .about-products-grid { grid-template-columns: 1fr 1fr; }
  .about-cases-grid { grid-template-columns: 1fr 1fr; }
  .about-philosophy-inner { grid-template-columns: 1fr; gap: 36px; }
  .about-philosophy { padding: 48px 0; }
  .about-cta-section { padding: 52px 0; }
  .about-cta-section h2 { font-size: 1.5rem; }
}
@media (max-width: 480px) {
  .about-caps-grid { grid-template-columns: 1fr; }
  .about-products-grid { grid-template-columns: 1fr; }
  .about-cases-grid { grid-template-columns: 1fr; }
  .about-hero-badges { flex-direction: column; gap: 8px; }
}

/* ---------- Print ---------- */
@media print {
  .topbar, .site-header, .site-footer,
  .contact-modal, .contact-modal-overlay,
  .bottom-products, .bottom-news { display: none; }
  body { background: #fff; }
}