/* ============================================
   河南奔宏机械设备有限公司 官网样式 v2
   ============================================ */

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

:root {
  --primary: #1a365d;
  --primary-light: #2c5282;
  --primary-dark: #0f2440;
  --accent: #d35400;
  --accent-light: #e67e22;
  --text: #333333;
  --text-light: #666666;
  --text-white: #ffffff;
  --bg: #ffffff;
  --bg-light: #f5f5f5;
  --bg-gray: #eeeeee;
  --border: #dddddd;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.1);
  --radius: 4px;
  --radius-lg: 8px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: "Microsoft YaHei", "PingFang SC", -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  overflow-x: hidden;
}

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

ul, ol {
  list-style: none;
}

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

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 30px;
}

/* ============================================
   顶部信息条
   ============================================ */
.top-bar {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.85);
  font-size: 0.82rem;
  padding: 7px 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.top-bar-left {
  display: flex;
  align-items: center;
  gap: 25px;
}

.top-bar-right {
  display: flex;
  align-items: center;
  gap: 15px;
}

.top-bar a:hover {
  color: var(--accent-light);
}

/* ============================================
   导航栏
   ============================================ */
.navbar {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: var(--primary);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 0.75rem;
  letter-spacing: 1px;
}

.logo-text h1 {
  font-size: 1.15rem;
  color: var(--primary);
  font-weight: 700;
}

.logo-text p {
  font-size: 0.65rem;
  color: var(--text-light);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0;
}

.nav-menu a {
  padding: 10px 18px;
  font-size: 0.9rem;
  color: var(--text);
  font-weight: 500;
  border-bottom: 2px solid transparent;
}

.nav-menu a:hover {
  color: var(--accent);
}

.nav-menu a.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.nav-phone {
  margin-left: 15px;
  background: var(--accent);
  color: white !important;
  padding: 9px 20px !important;
  border-radius: 4px;
  font-weight: 600 !important;
  border-bottom: none !important;
}

.nav-phone:hover {
  background: var(--primary) !important;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
  z-index: 1001;
}

.hamburger span {
  width: 24px;
  height: 2.5px;
  background: var(--primary);
  border-radius: 2px;
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

/* ============================================
   Hero 大图区
   ============================================ */
.hero {
  background: var(--primary);
  color: var(--text-white);
  padding: 80px 0 70px;
  position: relative;
}

.hero .container {
  display: flex;
  align-items: center;
  gap: 50px;
}

.hero-content {
  flex: 1.2;
}

.hero-badge {
  display: inline-block;
  border: 1px solid rgba(255,255,255,0.3);
  color: rgba(255,255,255,0.9);
  padding: 5px 14px;
  border-radius: 3px;
  font-size: 0.8rem;
  margin-bottom: 18px;
}

.hero h2 {
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 18px;
}

.hero h2 .highlight {
  color: var(--accent-light);
}

.hero-desc {
  font-size: 1rem;
  opacity: 0.85;
  line-height: 1.8;
  margin-bottom: 30px;
  max-width: 520px;
}
.hero-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 40px;
  padding-top: 25px;
  border-top: 1px solid rgba(255,255,255,0.15);
}

.hero-stat-item h3 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent-light);
}

.hero-stat-item p {
  font-size: 0.8rem;
  opacity: 0.7;
  margin-top: 3px;
}

.hero-image {
  flex: 1;
}

.hero-image-placeholder {
  width: 100%;
  height: 340px;
  background: rgba(255,255,255,0.05);
  border: 1px dashed rgba(255,255,255,0.2);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: rgba(255,255,255,0.4);
  font-size: 0.85rem;
}

/* ============================================
   通用按钮
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 28px;
  border-radius: 4px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-align: center;
}

.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: #b84700;
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: white;
  border: 1px solid rgba(255,255,255,0.5);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: white;
}

.btn-outline-dark {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}

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

.btn-sm {
  padding: 9px 20px;
  font-size: 0.85rem;
}

.btn-white {
  background: white;
  color: var(--primary);
}

.btn-white:hover {
  background: #f0f0f0;
}

/* ============================================
   通用版块
   ============================================ */
.section {
  padding: 70px 0;
}

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

.section-dark {
  background: var(--primary);
  color: white;
}

.section-header {
  text-align: center;
  margin-bottom: 45px;
}

.section-header .section-tag {
  display: inline-block;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.section-dark .section-tag {
  color: var(--accent-light);
}

.section-header h2 {
  font-size: 1.7rem;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 10px;
}

.section-dark .section-header h2 {
  color: white;
}

.section-header p {
  font-size: 0.95rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

.section-dark .section-header p {
  color: rgba(255,255,255,0.7);
}

/* ============================================
   产品卡片
   ============================================ */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}

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

.product-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.product-card-image {
  width: 100%;
  height: 200px;
  background: var(--bg-light);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--text-light);
  font-size: 0.8rem;
  position: relative;
  border-bottom: 1px solid var(--border);
}

.product-card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--accent);
  color: white;
  padding: 3px 10px;
  border-radius: 3px;
  font-size: 0.7rem;
  font-weight: 600;
}

.product-card-body {
  padding: 22px;
}

.product-card-body h3 {
  font-size: 1.1rem;
  color: var(--primary);
  margin-bottom: 6px;
  font-weight: 700;
}

.product-card-body .product-category {
  font-size: 0.75rem;
  color: var(--text-light);
  margin-bottom: 10px;
}

.product-card-body > p {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 15px;
  line-height: 1.6;
}

.product-card-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-bottom: 18px;
  padding: 12px;
  background: var(--bg-light);
  border-radius: var(--radius);
}

.product-card-specs .spec-item {
  font-size: 0.78rem;
}

.product-card-specs .spec-label {
  color: var(--text-light);
}

.product-card-specs .spec-value {
  color: var(--text);
  font-weight: 600;
}

.product-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.product-price {
  color: var(--accent);
  font-weight: 700;
  font-size: 1rem;
}

/* ============================================
   企业优势
   ============================================ */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.advantage-card {
  background: white;
  padding: 30px 25px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.advantage-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

.advantage-icon {
  width: 48px;
  height: 48px;
  background: var(--bg-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 15px;
  font-size: 1.2rem;
  color: var(--accent);
  font-weight: 700;
}

.advantage-card h3 {
  font-size: 1rem;
  color: var(--primary);
  margin-bottom: 8px;
  font-weight: 700;
}

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

/* ============================================
   适用行业
   ============================================ */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 15px;
}

.industry-item {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 25px 15px;
  text-align: center;
  transition: var(--transition);
}

.industry-item:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--accent-light);
}

.industry-icon {
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 10px;
  font-size: 1.1rem;
}

.industry-item h4 {
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 3px;
}

.industry-item p {
  font-size: 0.75rem;
  opacity: 0.65;
}

/* ============================================
   公司简介区
   ============================================ */
.about-section .container {
  display: flex;
  align-items: center;
  gap: 50px;
}

.about-image {
  flex: 1;
  min-height: 360px;
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--text-light);
  font-size: 0.85rem;
  border: 1px dashed var(--border);
}

.about-content {
  flex: 1.2;
}

.about-content .section-tag {
  display: inline-block;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.about-content h2 {
  font-size: 1.6rem;
  color: var(--primary);
  margin-bottom: 15px;
  font-weight: 700;
}

.about-content p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 12px;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 20px;
}

.about-feature-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text);
}

.about-feature-item .check-icon {
  width: 20px;
  height: 20px;
  background: var(--accent);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  flex-shrink: 0;
}

/* ============================================
   FAQ
   ============================================ */
.faq-list {
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 10px;
  overflow: hidden;
}

.faq-item.active {
  border-color: var(--accent);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 22px;
  cursor: pointer;
  font-weight: 600;
  color: var(--primary);
  font-size: 0.9rem;
  gap: 15px;
}

.faq-question:hover {
  color: var(--accent);
}

.faq-icon {
  font-size: 1.2rem;
  transition: transform 0.3s ease;
  color: var(--accent);
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer-inner {
  padding: 0 22px 18px;
  font-size: 0.87rem;
  color: var(--text-light);
  line-height: 1.8;
}

/* ============================================
   CTA
   ============================================ */
.cta-section {
  background: var(--accent);
  padding: 55px 0;
  text-align: center;
  color: white;
}

.cta-section h2 {
  font-size: 1.6rem;
  margin-bottom: 10px;
}

.cta-section p {
  font-size: 0.95rem;
  opacity: 0.9;
  margin-bottom: 25px;
}

.cta-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   页脚
   ============================================ */
.footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.75);
  padding: 50px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1.5fr;
  gap: 35px;
  padding-bottom: 35px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand h3 {
  font-size: 1.1rem;
  color: white;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.83rem;
  line-height: 1.8;
}

.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 15px;
}

.footer-social a {
  width: 34px;
  height: 34px;
  border-radius: 4px;
  border: 1px solid rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--accent);
  border-color: var(--accent);
}

.footer-column h4 {
  color: white;
  font-size: 0.95rem;
  margin-bottom: 15px;
  font-weight: 600;
}

.footer-column ul li {
  margin-bottom: 8px;
}

.footer-column ul li a {
  font-size: 0.83rem;
  opacity: 0.7;
}

.footer-column ul li a:hover {
  opacity: 1;
  color: var(--accent-light);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 12px;
  font-size: 0.83rem;
}

.footer-contact-item .contact-icon {
  color: var(--accent-light);
  flex-shrink: 0;
  width: 16px;
}

.footer-bottom {
  padding: 18px 0;
  text-align: center;
  font-size: 0.75rem;
  opacity: 0.5;
}

/* ============================================
   浮动按钮
   ============================================ */
.float-contact {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.float-btn {
  width: 48px;
  height: 48px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  border: none;
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
}

.float-btn:hover {
  transform: scale(1.05);
}

.float-btn-phone {
  background: var(--accent);
  color: white;
}

.float-btn-top {
  background: var(--primary);
  color: white;
  opacity: 0;
  visibility: hidden;
}

.float-btn-top.visible {
  opacity: 1;
  visibility: visible;
}

/* ============================================
   内页头部
   ============================================ */
.page-banner {
  background: var(--primary);
  padding: 45px 0;
  text-align: center;
  color: white;
}

.page-banner h2 {
  font-size: 1.8rem;
  margin-bottom: 8px;
}

.page-banner .breadcrumb {
  font-size: 0.85rem;
  opacity: 0.7;
}

.page-banner .breadcrumb a {
  color: white;
  opacity: 0.8;
}

.page-banner .breadcrumb a:hover {
  opacity: 1;
}

/* ============================================
   关于我们页
   ============================================ */
.about-intro {
  padding: 60px 0;
}

.about-intro-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 45px;
  align-items: start;
}

.about-intro-content h2 {
  font-size: 1.5rem;
  color: var(--primary);
  margin-bottom: 18px;
}

.about-intro-content p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 12px;
}

.about-info-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 25px;
}

.about-info-table td {
  padding: 11px 0;
  font-size: 0.88rem;
  border-bottom: 1px solid var(--border);
}

.about-info-table td:first-child {
  font-weight: 600;
  color: var(--primary);
  width: 110px;
}

.about-image-area {
  height: 420px;
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--text-light);
  font-size: 0.85rem;
  border: 1px dashed var(--border);
}

/* 服务卡片 */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.service-card {
  background: white;
  padding: 28px 22px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.service-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

.service-card .service-icon {
  width: 42px;
  height: 42px;
  background: var(--bg-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  font-size: 1.1rem;
}

.service-card h4 {
  font-size: 0.95rem;
  color: var(--primary);
  margin-bottom: 8px;
}

.service-card p {
  font-size: 0.82rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* 资质 */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.cert-item {
  height: 180px;
  background: white;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--text-light);
  font-size: 0.82rem;
}

/* ============================================
   产品详情页
   ============================================ */
.product-detail {
  padding: 50px 0;
}

.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 40px;
}

.product-gallery {
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  height: 380px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--text-light);
  border: 1px dashed var(--border);
  font-size: 0.85rem;
}

.product-info h1 {
  font-size: 1.5rem;
  color: var(--primary);
  margin-bottom: 8px;
}

.product-info .product-category-tag {
  display: inline-block;
  background: var(--bg-light);
  color: var(--text-light);
  padding: 3px 10px;
  border-radius: 3px;
  font-size: 0.75rem;
  margin-bottom: 18px;
  border: 1px solid var(--border);
}

.product-info .product-desc {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 20px;
}

.product-info .price-range {
  font-size: 1.3rem;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 20px;
}

.product-info .price-range small {
  font-size: 0.8rem;
  color: var(--text-light);
  font-weight: 400;
}

.product-service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.service-tag {
  background: var(--bg-light);
  padding: 6px 12px;
  border-radius: 3px;
  font-size: 0.8rem;
  color: var(--text);
  border: 1px solid var(--border);
}

.product-detail-section {
  margin-bottom: 35px;
}

.product-detail-section h3 {
  font-size: 1.15rem;
  color: var(--primary);
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

/* 参数表格 */
.params-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--border);
}

.params-table th,
.params-table td {
  padding: 12px 16px;
  text-align: left;
  font-size: 0.85rem;
  border: 1px solid var(--border);
}

.params-table th {
  background: var(--primary);
  color: white;
  font-weight: 600;
}

.params-table tr:nth-child(even) {
  background: var(--bg-light);
}

.params-table td:first-child {
  font-weight: 600;
  color: var(--primary);
  width: 130px;
}

/* 物料标签 */
.material-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.material-tag {
  background: var(--bg-light);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 3px;
  font-size: 0.82rem;
  color: var(--text);
}

.material-tag.warning {
  border-color: #c0392b;
  color: #c0392b;
  background: rgba(192,57,43,0.05);
}

.customer-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.customer-tag {
  background: var(--bg-light);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 3px;
  font-size: 0.82rem;
  color: var(--primary);
}

/* ============================================
   产品列表页 - 产品分类
   ============================================ */
.product-filter {
  display: flex;
  gap: 10px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 20px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.85rem;
  cursor: pointer;
  background: white;
  color: var(--text);
  transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

/* 更多产品区（非主推） */
.other-products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.other-product-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  transition: var(--transition);
}

.other-product-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

.other-product-card .card-icon {
  width: 60px;
  height: 60px;
  background: var(--bg-light);
  border-radius: 50%;
  margin: 0 auto 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--text-light);
}

.other-product-card h4 {
  font-size: 0.92rem;
  color: var(--primary);
  margin-bottom: 6px;
}

.other-product-card p {
  font-size: 0.78rem;
  color: var(--text-light);
}

/* ============================================
   案例页
   ============================================ */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 25px;
}

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

.case-card:hover {
  box-shadow: var(--shadow-lg);
}

.case-card-image {
  height: 180px;
  background: var(--bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: 0.85rem;
  border-bottom: 1px solid var(--border);
}

.case-card-body {
  padding: 22px;
}

.case-card-body h3 {
  font-size: 1.05rem;
  color: var(--primary);
  margin-bottom: 10px;
}

.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 10px;
}

.case-meta-item {
  font-size: 0.8rem;
  color: var(--text-light);
}

.case-meta-item strong {
  color: var(--text);
}

.case-card-body > p {
  font-size: 0.85rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* ============================================
   新闻页
   ============================================ */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}

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

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

.news-card-image {
  height: 160px;
  background: var(--bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: 0.85rem;
  border-bottom: 1px solid var(--border);
}

.news-card-body {
  padding: 18px;
}

.news-tag {
  display: inline-block;
  background: var(--bg-light);
  color: var(--accent);
  padding: 2px 8px;
  border-radius: 3px;
  font-size: 0.72rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.news-card-body h3 {
  font-size: 0.95rem;
  color: var(--primary);
  margin-bottom: 8px;
  line-height: 1.5;
}

.news-card-body > p {
  font-size: 0.82rem;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 10px;
}

.news-date {
  font-size: 0.75rem;
  color: var(--text-light);
  opacity: 0.6;
}

/* ============================================
   联系页
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.contact-info-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.contact-info-icon {
  width: 42px;
  height: 42px;
  background: var(--bg-light);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
  border: 1px solid var(--border);
}

.contact-info-item h4 {
  font-size: 0.92rem;
  color: var(--primary);
  margin-bottom: 3px;
}

.contact-info-item p {
  font-size: 0.85rem;
  color: var(--text-light);
}

.contact-map {
  height: 220px;
  background: var(--bg-light);
  border-radius: var(--radius);
  border: 1px dashed var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: 0.85rem;
  margin-top: 25px;
}

.contact-form {
  background: var(--bg-light);
  padding: 30px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

.contact-form h3 {
  font-size: 1.15rem;
  color: var(--primary);
  margin-bottom: 22px;
}

.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text);
  font-weight: 600;
  margin-bottom: 5px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.88rem;
  font-family: inherit;
  color: var(--text);
  background: white;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.form-submit {
  width: 100%;
  padding: 12px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.form-submit:hover {
  background: #b84700;
}

/* 社交 */
.social-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 25px;
}

.social-item {
  background: white;
  padding: 15px;
  border-radius: var(--radius);
  text-align: center;
  border: 1px solid var(--border);
}

.social-item h4 {
  font-size: 0.82rem;
  color: var(--primary);
  margin-top: 5px;
}

/* ============================================
   FAQ页专用
   ============================================ */
.faq-page-list {
  max-width: 900px;
  margin: 0 auto;
}

.faq-category {
  margin-bottom: 35px;
}

.faq-category h3 {
  font-size: 1.05rem;
  color: var(--primary);
  margin-bottom: 12px;
  padding-left: 12px;
  border-left: 3px solid var(--accent);
}

/* ============================================
   动画
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

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

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1024px) {
  .container {
    padding: 0 20px;
  }

  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 25px;
  }

  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cert-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  .top-bar {
    display: none;
  }

  .navbar .container {
    height: 60px;
  }

  .hamburger {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    max-width: 280px;
    height: 100vh;
    background: white;
    flex-direction: column;
    padding: 70px 25px 25px;
    box-shadow: -3px 0 10px rgba(0,0,0,0.1);
    transition: right 0.3s ease;
    align-items: stretch;
  }

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

  .nav-menu a {
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
  }

  .nav-menu a.active {
    border-bottom-color: var(--accent);
  }

  .nav-phone {
    margin-left: 0;
    margin-top: 10px;
    text-align: center;
    justify-content: center;
  }

  .nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.4);
    z-index: 999;
  }

  .nav-overlay.open {
    display: block;
  }

  .hero {
    padding: 50px 0;
  }

  .hero .container {
    flex-direction: column;
    text-align: center;
  }

  .hero h2 {
    font-size: 1.7rem;
  }

  .hero-desc {
    max-width: 100%;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
    gap: 25px;
  }

  .hero-image {
    display: none;
  }

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

  .advantages-grid,
  .service-grid {
    grid-template-columns: 1fr;
  }

  .industries-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-section .container {
    flex-direction: column;
  }

  .about-intro-grid {
    grid-template-columns: 1fr;
  }

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

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

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

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

  .other-products-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .section {
    padding: 45px 0;
  }

  .section-header h2 {
    font-size: 1.4rem;
  }

  .about-features {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

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

  .social-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .params-table {
    display: block;
    overflow-x: auto;
  }
}

@media (max-width: 480px) {
  .hero h2 {
    font-size: 1.4rem;
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: 15px;
  }

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

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

  .other-products-grid {
    grid-template-columns: 1fr;
  }
}
/* ============================================
   v3 新增交互样式
   ============================================ */

/* --- 滚动进度条 --- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--accent);
  z-index: 9999;
  transition: none;
}

/* --- 导航下拉菜单 --- */
.nav-item-dropdown {
  position: relative;
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background: white;
  border: 1px solid var(--border);
  border-radius: 0 0 var(--radius) var(--radius);
  box-shadow: var(--shadow-lg);
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(5px);
  transition: var(--transition);
  z-index: 100;
}

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

.nav-dropdown a {
  display: block;
  padding: 10px 18px !important;
  font-size: 0.85rem !important;
  border-bottom: 1px solid var(--bg-light) !important;
  color: var(--text) !important;
}

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

.nav-dropdown a:hover {
  background: var(--bg-light) !important;
  color: var(--accent) !important;
}

.nav-arrow {
  font-size: 0.6rem;
  margin-left: 3px;
  transition: transform 0.3s;
}

.nav-item-dropdown:hover .nav-arrow {
  transform: rotate(180deg);
}

/* --- 数字滚动动画 --- */
.counter-number {
  display: inline-block;
}

/* --- 图片灯箱 --- */
.lightbox-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.85);
  z-index: 10000;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.lightbox-overlay.active {
  display: flex;
}

.lightbox-overlay img {
  max-width: 90%;
  max-height: 85vh;
  border-radius: var(--radius);
  box-shadow: 0 0 30px rgba(0,0,0,0.5);
}

.lightbox-close {
  position: fixed;
  top: 20px;
  right: 25px;
  color: white;
  font-size: 2rem;
  cursor: pointer;
  z-index: 10001;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  border: none;
  transition: var(--transition);
}

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

/* --- 图片轮播 --- */
.carousel {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--bg-light);
}

.carousel-track {
  display: flex;
  transition: transform 0.4s ease;
}

.carousel-slide {
  min-width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 380px;
  background: var(--bg-light);
  color: var(--text-light);
  font-size: 0.85rem;
  border: 1px dashed var(--border);
}

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

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  background: rgba(0,0,0,0.4);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  z-index: 5;
}

.carousel-btn:hover {
  background: rgba(0,0,0,0.7);
}

.carousel-prev {
  left: 10px;
}

.carousel-next {
  right: 10px;
}

.carousel-dots {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
}

.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.carousel-dot.active {
  background: white;
  transform: scale(1.3);
}

/* --- 在线客服悬浮框 --- */
.chat-widget {
  position: fixed;
  right: 20px;
  bottom: 85px;
  z-index: 998;
}

.chat-btn {
  width: 56px;
  height: 56px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  font-size: 0.7rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  position: relative;
}

.chat-btn:hover {
  background: var(--primary-light);
  transform: scale(1.05);
}

.chat-btn-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 14px;
  height: 14px;
  background: #e53e3e;
  border-radius: 50%;
  border: 2px solid white;
}

.chat-box {
  position: absolute;
  bottom: 65px;
  right: 0;
  width: 320px;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border);
  overflow: hidden;
  display: none;
  animation: chatSlideUp 0.3s ease;
}

.chat-box.active {
  display: block;
}

@keyframes chatSlideUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.chat-header {
  background: var(--primary);
  color: white;
  padding: 15px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.chat-header h4 {
  font-size: 0.9rem;
}

.chat-header-close {
  background: none;
  border: none;
  color: white;
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0.8;
}

.chat-header-close:hover {
  opacity: 1;
}

.chat-body {
  padding: 15px;
  height: 250px;
  overflow-y: auto;
}

.chat-message {
  margin-bottom: 12px;
  display: flex;
  gap: 8px;
}

.chat-message-bot {
  flex-direction: row;
}

.chat-message-user {
  flex-direction: row-reverse;
}

.chat-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  flex-shrink: 0;
  color: var(--text-light);
  border: 1px solid var(--border);
}

.chat-message-bot .chat-avatar {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.chat-bubble {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 0.82rem;
  line-height: 1.6;
}

.chat-message-bot .chat-bubble {
  background: var(--bg-light);
  color: var(--text);
  border-bottom-left-radius: 4px;
}

.chat-message-user .chat-bubble {
  background: var(--primary);
  color: white;
  border-bottom-right-radius: 4px;
}

.chat-quick-replies {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.chat-quick-btn {
  padding: 6px 12px;
  border: 1px solid var(--accent);
  border-radius: 20px;
  font-size: 0.75rem;
  color: var(--accent);
  background: white;
  cursor: pointer;
  transition: var(--transition);
}

.chat-quick-btn:hover {
  background: var(--accent);
  color: white;
}

.chat-footer {
  padding: 10px 15px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 8px;
}

.chat-input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.82rem;
  font-family: inherit;
  outline: none;
}

.chat-input:focus {
  border-color: var(--accent);
}

.chat-send {
  padding: 8px 16px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 20px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: var(--transition);
}

.chat-send:hover {
  background: #b84700;
}

/* --- 表单验证样式 --- */
.form-group input.valid {
  border-color: #38a169;
}

.form-group input.invalid {
  border-color: #e53e3e;
}

.form-hint {
  font-size: 0.75rem;
  margin-top: 4px;
  display: none;
}

.form-hint.show {
  display: block;
}

.form-hint.error {
  color: #e53e3e;
}

.form-hint.success {
  color: #38a169;
}

/* --- 可点击图片提示 --- */
.zoomable {
  cursor: zoom-in;
  transition: var(--transition);
}

.zoomable:hover {
  opacity: 0.9;
}

/* --- 选型工具页面 --- */
.selector-container {
  max-width: 700px;
  margin: 0 auto;
}

.selector-step {
  display: none;
  animation: fadeInUp 0.4s ease;
}

.selector-step.active {
  display: block;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

.selector-progress {
  display: flex;
  gap: 4px;
  margin-bottom: 30px;
}

.selector-progress-bar {
  flex: 1;
  height: 4px;
  background: var(--bg-gray);
  border-radius: 2px;
  overflow: hidden;
}

.selector-progress-bar.done {
  background: var(--accent);
}

.selector-progress-bar.current {
  background: linear-gradient(90deg, var(--accent) 50%, var(--bg-gray) 50%);
}

.selector-question {
  font-size: 1.2rem;
  color: var(--primary);
  margin-bottom: 8px;
  font-weight: 700;
}

.selector-desc {
  font-size: 0.88rem;
  color: var(--text-light);
  margin-bottom: 25px;
}

.selector-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.selector-option {
  padding: 18px 20px;
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  background: white;
}

.selector-option:hover {
  border-color: var(--accent);
  background: rgba(211,84,0,0.03);
}

.selector-option.selected {
  border-color: var(--accent);
  background: rgba(211,84,0,0.06);
}

.selector-option h4 {
  font-size: 0.95rem;
  color: var(--primary);
  margin-bottom: 4px;
}

.selector-option p {
  font-size: 0.78rem;
  color: var(--text-light);
}

.selector-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 25px;
}

.selector-result {
  display: none;
  animation: fadeInUp 0.4s ease;
}

.selector-result.active {
  display: block;
}

.result-card {
  background: white;
  border: 2px solid var(--accent);
  border-radius: var(--radius-lg);
  padding: 30px;
  margin-bottom: 20px;
}

.result-card h3 {
  font-size: 1.3rem;
  color: var(--primary);
  margin-bottom: 8px;
}

.result-card .result-tag {
  display: inline-block;
  background: rgba(211,84,0,0.1);
  color: var(--accent);
  padding: 3px 10px;
  border-radius: 3px;
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.result-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 15px;
}

.result-card .result-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: 15px;
  background: var(--bg-light);
  border-radius: var(--radius);
  margin-bottom: 15px;
  font-size: 0.85rem;
}

.result-card .result-specs .spec-label {
  color: var(--text-light);
}

.result-card .result-specs .spec-value {
  color: var(--text);
  font-weight: 600;
}

/* --- 视频展示页 --- */
.video-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 25px;
}

.video-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.video-card:hover {
  box-shadow: var(--shadow-lg);
}

.video-placeholder {
  height: 220px;
  background: #1a1a1a;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: rgba(255,255,255,0.5);
  position: relative;
  cursor: pointer;
}

.video-play-btn {
  width: 60px;
  height: 60px;
  background: rgba(255,255,255,0.15);
  border: 2px solid rgba(255,255,255,0.4);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  transition: var(--transition);
}

.video-placeholder:hover .video-play-btn {
  background: var(--accent);
  border-color: var(--accent);
  transform: scale(1.1);
}

.video-card-body {
  padding: 18px;
}

.video-card-body h3 {
  font-size: 1rem;
  color: var(--primary);
  margin-bottom: 5px;
}

.video-card-body p {
  font-size: 0.82rem;
  color: var(--text-light);
}

.video-tag {
  display: inline-block;
  background: var(--bg-light);
  color: var(--accent);
  padding: 2px 8px;
  border-radius: 3px;
  font-size: 0.72rem;
  font-weight: 600;
  margin-bottom: 6px;
}

/* --- 产品对比页 --- */
.compare-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 25px;
  flex-wrap: wrap;
  gap: 10px;
}

.compare-table-wrapper {
  overflow-x: auto;
}

.compare-table {
  width: 100%;
  min-width: 700px;
  border-collapse: collapse;
  border: 1px solid var(--border);
}

.compare-table th,
.compare-table td {
  padding: 14px 18px;
  text-align: center;
  font-size: 0.88rem;
  border: 1px solid var(--border);
}

.compare-table th {
  background: var(--primary);
  color: white;
  font-weight: 600;
}

.compare-table th:first-child {
  background: var(--primary-dark);
  text-align: left;
}

.compare-table td:first-child {
  font-weight: 600;
  color: var(--primary);
  text-align: left;
  background: var(--bg-light);
  min-width: 120px;
}

.compare-table tr:nth-child(even) td:not(:first-child) {
  background: rgba(245,245,245,0.5);
}

.compare-table .highlight-cell {
  background: rgba(211,84,0,0.06) !important;
  color: var(--accent);
  font-weight: 600;
}

.compare-product-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.compare-product-header .compare-img {
  width: 80px;
  height: 60px;
  background: rgba(255,255,255,0.1);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: rgba(255,255,255,0.5);
}

/* --- 页面加载动画 --- */
.page-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: white;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.4s ease;
}

.page-loader.hidden {
  opacity: 0;
  pointer-events: none;
}

.loader-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--bg-gray);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* --- 响应式补充 --- */
@media (max-width: 768px) {
  .nav-dropdown {
    position: static;
    box-shadow: none;
    border: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    min-width: auto;
    padding-left: 15px;
  }

  .nav-item-dropdown:hover .nav-dropdown {
    transform: none;
  }

  .chat-box {
    width: 290px;
    right: -10px;
  }

  .selector-options {
    grid-template-columns: 1fr;
  }

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

  .compare-table {
    min-width: 600px;
  }
}
/* --- 新闻卡片可展开 --- */
.news-card {
  cursor: pointer;
}

.news-card-body > p {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: all 0.3s ease;
}

.news-card.expanded .news-card-body > p {
  -webkit-line-clamp: unset;
  overflow: visible;
}

.news-card::after {
  content: '点击展开阅读';
  display: block;
  text-align: center;
  font-size: 0.75rem;
  color: var(--accent);
  padding: 8px 0 12px;
  opacity: 0.7;
}

.news-card.expanded::after {
  content: '点击收起';
}
/* --- 占位图美化（工业风） --- */
.product-card-image,
.hero-image-placeholder,
.about-image,
.about-image-area,
.product-gallery,
.case-card-image,
.news-card-image,
.video-placeholder,
.cert-item {
  position: relative;
  overflow: hidden;
}

.product-card-image::before,
.hero-image-placeholder::before,
.about-image::before,
.about-image-area::before,
.product-gallery::before,
.case-card-image::before,
.news-card-image::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    linear-gradient(135deg, rgba(26,54,93,0.03) 25%, transparent 25%),
    linear-gradient(225deg, rgba(26,54,93,0.03) 25%, transparent 25%),
    linear-gradient(315deg, rgba(26,54,93,0.03) 25%, transparent 25%),
    linear-gradient(45deg, rgba(26,54,93,0.03) 25%, transparent 25%);
  background-size: 20px 20px;
  pointer-events: none;
}

.product-card-image::after,
.hero-image-placeholder::after,
.about-image::after,
.about-image-area::after,
.product-gallery::after {
  content: '';
  position: absolute;
  bottom: -30px;
  right: -30px;
  width: 120px;
  height: 120px;
  border: 2px solid rgba(26,54,93,0.06);
  border-radius: 50%;
  pointer-events: none;
}

/* 占位图内的齿轮装饰 */
.placeholder-gear {
  width: 60px;
  height: 60px;
  border: 3px solid rgba(26,54,93,0.12);
  border-radius: 50%;
  position: relative;
  margin-bottom: 10px;
}

.placeholder-gear::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 20px;
  height: 20px;
  border: 3px solid rgba(26,54,93,0.12);
  border-radius: 50%;
}

.placeholder-gear::after {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 8px;
  height: 12px;
  background: rgba(26,54,93,0.08);
  border-radius: 2px;
  box-shadow:
    0px 54px 0 rgba(26,54,93,0.08),
    -27px 27px 0 rgba(26,54,93,0.08),
    27px 27px 0 rgba(26,54,93,0.08);
}

/* 占位文字样式统一 */
.product-card-image > p,
.hero-image-placeholder > p,
.about-image > p,
.about-image-area > p,
.product-gallery > p,
.case-card-image > p,
.news-card-image > p,
.cert-item > p,
.video-placeholder > p {
  position: relative;
  z-index: 1;
  font-size: 0.82rem;
  color: var(--text-light);
  opacity: 0.7;
}

/* 视频占位特殊处理 */
.video-placeholder::before {
  background:
    linear-gradient(135deg, rgba(255,255,255,0.02) 25%, transparent 25%),
    linear-gradient(225deg, rgba(255,255,255,0.02) 25%, transparent 25%),
    linear-gradient(315deg, rgba(255,255,255,0.02) 25%, transparent 25%),
    linear-gradient(45deg, rgba(255,255,255,0.02) 25%, transparent 25%);
  background-size: 20px 20px;
}
/* --- 4列产品网格响应式 --- */
@media (max-width: 1024px) {
  .products-grid[style*="repeat(4"] {
    grid-template-columns: repeat(2, 1fr) !important;
  }
}
@media (max-width: 768px) {
  .products-grid[style*="repeat(4"] {
    grid-template-columns: 1fr !important;
  }
}
/* --- 6列行业网格响应式 --- */
@media (max-width: 1024px) {
  .industries-grid[style*="repeat(6"] {
    grid-template-columns: repeat(3, 1fr) !important;
  }
}
@media (max-width: 768px) {
  .industries-grid[style*="repeat(6"] {
    grid-template-columns: repeat(2, 1fr) !important;
  }
}