/* ==========================================
   迈科电气 - 通用样式文件
   ========================================== */

:root {
  --brand-blue: #0056b3;
  --brand-blue-dark: #003366;
  --brand-dark-blue: #001f4d;
  --brand-orange: #ff6600;
  --brand-orange-dark: #e55c00;
  --text-dark: #333;
  --text-light: #666;
  --text-lighter: #999;
  --bg-white: #fff;
  --bg-light: #f8f9fa;
  --bg-lighter: #f5f5f5;
  --border-color: #eee;
  --shadow-sm: 0 2px 10px rgba(0,0,0,0.05);
  --shadow-md: 0 10px 30px rgba(0,0,0,0.12);
  --shadow-lg: 0 15px 40px rgba(0,0,0,0.15);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ==========================================
   响应式断点
   ========================================== */
@media (max-width: 1399px) { /* XXL */
  
}

@media (max-width: 1199px) { /* XL */
  
}

@media (max-width: 991px) { /* LG */
  
}

@media (max-width: 767px) { /* MD */
  
}

@media (max-width: 575px) { /* SM */
  
}

/* ==========================================
   通用工具类
   ========================================== */
.text-brand-blue {
  color: var(--brand-blue) !important;
}

.text-brand-orange {
  color: var(--brand-orange) !important;
}

.bg-brand-blue {
  background-color: var(--brand-blue) !important;
}

.bg-brand-orange {
  background-color: var(--brand-orange) !important;
}

/* ==========================================
   按钮样式
   ========================================== */
.btn-primary {
  background: var(--brand-orange);
  color: #fff;
  border: none;
  border-radius: 30px;
  font-size: 16px;
  font-weight: 600;
  padding: 15px 50px;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
}

.btn-primary:hover {
  background: var(--brand-orange-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(255,102,0,0.3);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--brand-blue);
  border: 2px solid var(--brand-blue);
  border-radius: 30px;
  font-size: 16px;
  font-weight: 600;
  padding: 15px 40px;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
}

.btn-secondary:hover {
  background: var(--brand-blue);
  color: #fff;
}

/* ==========================================
   卡片样式
   ========================================== */
.card {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand-blue);
}

/* ==========================================
   表单样式
   ========================================== */
.form-control {
  padding: 15px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 15px;
  transition: all 0.3s ease;
}

.form-control:focus {
  border-color: var(--brand-blue);
  box-shadow: 0 0 0 3px rgba(0,86,179,0.1);
}

.form-label {
  font-weight: 500;
  color: var(--text-dark);
  margin-bottom: 10px;
}

/* ==========================================
   动画
   ========================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.animate-fadeInUp {
  animation: fadeInUp 0.6s ease;
}

/* ==========================================
   页面Banner通用样式
   ========================================== */
.page-banner {
  background: linear-gradient(135deg, #001f4d 0%, #0056b3 100%);
  padding: 100px 0 60px;
  text-align: center;
  color: #fff;
}

.page-banner h1 {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: 2px;
}

.page-banner p {
  font-size: 18px;
  opacity: 0.9;
}

/* ==========================================
   Footer通用样式
   ========================================== */
.footer {
  background: #001f4d;
  color: #fff;
  padding: 70px 0 30px;
}

.footer-brand h4 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 20px;
  color: #fff;
}

.footer-desc {
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 25px;
}

.footer-contact p {
  color: rgba(255,255,255,0.8);
  font-size: 14px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-contact i {
  color: var(--brand-orange);
  font-size: 16px;
}

.footer h5 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 25px;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

.footer-links a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: 14px;
  transition: all 0.3s ease;
  display: inline-block;
}

.footer-links a:hover {
  color: var(--brand-orange);
  padding-left: 5px;
}

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

.social-link {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  transition: all 0.3s ease;
  text-decoration: none;
}

.social-link:hover {
  background: var(--brand-orange);
  color: #fff;
  transform: translateY(-3px);
}

.footer-divider {
  border-top: 1px solid rgba(255,255,255,0.1);
  margin: 50px 0 30px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
}

.copyright {
  color: rgba(255,255,255,0.6);
  font-size: 14px;
  margin: 0;
}

.footer-legal-links {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-legal-links a {
  color: rgba(255,255,255,0.6) !important;
  text-decoration: none;
  font-size: 14px;
  transition: color 0.3s ease;
}

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

.footer-legal-links .separator {
  color: rgba(255,255,255,0.3);
  font-size: 14px;
}

@media (max-width: 767px) {
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .footer-legal-links {
    justify-content: center;
  }
}

/* ==========================================
   响应式调整
   ========================================== */
@media (max-width: 767px) {
  .page-banner h1 {
    font-size: 32px;
  }
  
  .page-banner p {
    font-size: 15px;
  }
  
  .btn-primary,
  .btn-secondary {
    padding: 12px 30px;
    font-size: 14px;
  }
}

/* ==========================================
   Section 通用样式
   ========================================== */
section {
  padding: 100px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 60px;
}

.section-title h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 15px;
}

.section-title p {
  font-size: 16px;
  color: var(--text-light);
  max-width: 700px;
  margin: 0 auto;
}

.section-title .line {
  width: 60px;
  height: 3px;
  background: var(--brand-orange);
  margin: 20px auto 0;
}

/* ==========================================
   产品卡片样式
   ========================================== */
.product-card {
  background: #fff;
  border: 1px solid var(--border-color);
  padding: 40px;
  text-align: center;
  transition: all 0.3s ease;
  height: 100%;
}

.product-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
  border-color: var(--brand-blue);
}

.product-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--brand-blue), var(--brand-blue-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 25px;
  font-size: 32px;
  color: #fff;
}

.product-card h4 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--text-dark);
}

.product-card p {
  color: var(--text-light);
  font-size: 14px;
  margin-bottom: 20px;
}

.product-link {
  color: var(--brand-blue);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

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

/* ==========================================
   解决方案卡片样式
   ========================================== */
.solutions-section {
  background: #f8f9fa;
}

.solution-card {
  background: #fff;
  padding: 50px;
  text-align: center;
  border-radius: 0;
  transition: all 0.3s ease;
  height: 100%;
  position: relative;
  overflow: hidden;
}

.solution-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--brand-blue);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

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

.solution-card:hover {
  box-shadow: 0 15px 40px rgba(0,0,0,0.1);
}

.solution-icon {
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, var(--brand-blue), var(--brand-blue-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 30px;
  font-size: 40px;
  color: #fff;
}

.solution-card h4 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-dark);
}

.solution-card p {
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.8;
}

/* ==========================================
   新闻卡片样式
   ========================================== */
.news-card {
  background: #fff;
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all 0.3s ease;
}

.news-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.news-img {
  width: 100%;
  height: 250px;
  background: linear-gradient(135deg, #e9ecef, #dee2e6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 60px;
  color: var(--brand-blue);
}

.news-body {
  padding: 30px;
}

.news-date {
  font-size: 13px;
  color: var(--brand-orange);
  font-weight: 600;
  margin-bottom: 15px;
}

.news-body h4 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--text-dark);
  line-height: 1.5;
}

.news-body p {
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 20px;
}

.news-link {
  color: var(--brand-blue);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

/* ==========================================
   按钮轮廓样式（白色边框）
   ========================================== */
.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid #fff;
  border-radius: 30px;
  font-size: 16px;
  font-weight: 600;
  padding: 15px 50px;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
}

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

/* ==========================================
   Page Hero Banner（页面顶部横幅）
   ========================================== */
.page-hero {
  position: relative;
  padding: 160px 0 100px;
  background: linear-gradient(135deg, #001228 0%, #001f4d 40%, #0056b3 100%);
  overflow: hidden;
  color: #fff;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(0,86,179,0.4) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255,102,0,0.15) 0%, transparent 40%);
}

.hero-deco {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.06);
}

.hero-deco-1 { width: 500px; height: 500px; top: -150px; right: -100px; }
.hero-deco-2 { width: 300px; height: 300px; bottom: -80px; left: 5%; }
.hero-deco-3 { width: 200px; height: 200px; top: 20%; left: 30%; }

.page-hero-content { position: relative; z-index: 2; }

.hero-eyebrow {
  display: inline-block;
  background: rgba(255,102,0,0.2);
  border: 1px solid rgba(255,102,0,0.4);
  color: #ff8833;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 3px;
  padding: 6px 20px;
  border-radius: 20px;
  margin-bottom: 24px;
  text-transform: uppercase;
}

.page-hero h1 {
  font-size: 58px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: 2px;
}

.page-hero h1 span { color: var(--brand-orange); }

.page-hero .lead {
  font-size: 18px;
  color: rgba(255,255,255,0.82);
  max-width: 600px;
  line-height: 1.8;
}

.breadcrumb-wrap {
  position: absolute;
  bottom: 30px; left: 0; right: 0;
}

.breadcrumb { margin: 0; }
.breadcrumb-item a { color: rgba(255,255,255,0.6); text-decoration: none; font-size: 14px; }
.breadcrumb-item a:hover { color: #fff; }
.breadcrumb-item.active { color: rgba(255,255,255,0.9); font-size: 14px; }
.breadcrumb-item + .breadcrumb-item::before { color: rgba(255,255,255,0.4); }

/* ==========================================
   Section Header（区块标题）
   ========================================== */
.section-header { text-align: center; margin-bottom: 70px; }

.section-header .eyebrow {
  display: inline-block;
  color: var(--brand-orange);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.section-header h2 {
  font-size: 38px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 16px;
}

.section-header p {
  font-size: 16px;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

.section-header .line {
  width: 60px; height: 3px;
  background: var(--brand-orange);
  margin: 20px auto 0;
}

/* ==========================================
   Stats Strip（统计条）
   ========================================== */
.stats-strip {
  background: linear-gradient(135deg, var(--brand-dark-blue), #0056b3);
  padding: 60px 0;
}

.stat-item { text-align: center; }

.stat-num {
  font-size: 52px;
  font-weight: 700;
  color: #fff;
  line-height: 1;
  margin-bottom: 8px;
}

.stat-num span { color: var(--brand-orange); }

.stat-label {
  font-size: 15px;
  color: rgba(255,255,255,0.75);
  letter-spacing: 1px;
}

.stat-divider {
  width: 1px;
  background: rgba(255,255,255,0.15);
  height: 60px;
  margin: auto;
}

/* ==========================================
   Timeline（时间线）
   ========================================== */
.timeline-section {
  padding: 100px 0;
  background: #f8f9fb;
}

.timeline {
  position: relative;
  padding: 0 0 0 60px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 20px; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--brand-blue), var(--brand-orange));
}

.timeline-item {
  position: relative;
  margin-bottom: 50px;
}

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

.timeline-dot {
  position: absolute;
  left: -48px;
  top: 8px;
  width: 18px; height: 18px;
  background: var(--brand-blue);
  border-radius: 50%;
  border: 3px solid #fff;
  box-shadow: 0 0 0 3px rgba(0,86,179,0.3);
  transition: all 0.3s;
}

.timeline-item:hover .timeline-dot {
  background: var(--brand-orange);
  box-shadow: 0 0 0 3px rgba(255,102,0,0.3);
  transform: scale(1.2);
}

.timeline-card {
  background: #fff;
  border-radius: 12px;
  padding: 30px 35px;
  box-shadow: 0 2px 15px rgba(0,0,0,0.06);
  transition: all 0.3s;
  border-left: 3px solid transparent;
}

.timeline-item:hover .timeline-card {
  box-shadow: 0 8px 30px rgba(0,0,0,0.12);
  border-left-color: var(--brand-blue);
  transform: translateX(4px);
}

.timeline-year {
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-orange);
  letter-spacing: 2px;
  margin-bottom: 8px;
}

.timeline-card h4 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 10px;
}

.timeline-card p {
  font-size: 14px;
  color: var(--text-light);
  margin: 0;
  line-height: 1.7;
}

/* ==========================================
   Advantage Cards（优势卡片）
   ========================================== */
.advantage-section { padding: 100px 0; background: #fff; }

.adv-card {
  background: #fff;
  border: 1px solid #eef0f4;
  border-radius: 16px;
  padding: 45px 35px;
  text-align: center;
  transition: all 0.35s;
  height: 100%;
  position: relative;
  overflow: hidden;
}

.adv-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-blue), var(--brand-orange));
  transform: scaleX(0);
  transition: transform 0.3s;
}

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

.adv-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.1);
  border-color: transparent;
}

.adv-icon-wrap {
  width: 90px; height: 90px;
  background: linear-gradient(135deg, #eef4ff, #dce9ff);
  border-radius: 24px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 28px;
  font-size: 38px;
  color: var(--brand-blue);
  transition: all 0.3s;
}

.adv-card:hover .adv-icon-wrap {
  background: linear-gradient(135deg, var(--brand-blue), #003d8a);
  color: #fff;
}

.adv-card h4 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--text-dark);
}

.adv-card p {
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.8;
  margin: 0;
}

/* ==========================================
   Culture Section（企业文化）
   ========================================== */
.culture-section {
  padding: 100px 0;
  background: linear-gradient(135deg, #001228 0%, #001f4d 100%);
  position: relative;
  overflow: hidden;
}

.culture-section::before {
  content: '';
  position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80' viewBox='0 0 80 80'%3E%3Crect x='10' y='10' width='60' height='60' fill='none' stroke='white' stroke-opacity='0.02' stroke-width='1'/%3E%3C/svg%3E");
}

.culture-section .section-header h2 { color: #fff; }
.culture-section .section-header p { color: rgba(255,255,255,0.65); }
.culture-section .section-header .eyebrow { color: #ff8833; }

.value-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px;
  padding: 40px 30px;
  text-align: center;
  transition: all 0.3s;
  height: 100%;
  backdrop-filter: blur(5px);
  position: relative;
}

.value-card:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,102,0,0.4);
  transform: translateY(-5px);
}

.value-num {
  font-size: 48px;
  font-weight: 700;
  color: rgba(255,255,255,0.08);
  position: absolute;
  top: 15px; right: 20px;
  line-height: 1;
}

.value-icon {
  font-size: 40px;
  color: var(--brand-orange);
  margin-bottom: 20px;
  display: block;
}

.value-card h4 {
  font-size: 20px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 14px;
}

.value-card p {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  line-height: 1.8;
  margin: 0;
}

/* ==========================================
   Certification Cards（资质认证卡片）
   ========================================== */
.cert-section { padding: 80px 0; background: #f8f9fb; }

.cert-card {
  background: #fff;
  border-radius: 12px;
  padding: 30px 25px;
  text-align: center;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  transition: all 0.3s;
}

.cert-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.12);
}

.cert-icon {
  font-size: 48px;
  color: var(--brand-blue);
  margin-bottom: 15px;
  display: block;
}

.cert-card h5 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.cert-card p {
  font-size: 13px;
  color: var(--text-light);
  margin: 0;
}

/* ==========================================
   CTA Section（行动召唤区）
   ========================================== */
.cta-section {
  padding: 90px 0;
  background: linear-gradient(135deg, var(--brand-blue) 0%, #0040a8 100%);
  text-align: center;
  color: #fff;
}

.cta-section h2 {
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 20px;
}

.cta-section p {
  font-size: 17px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.btn-cta-primary {
  display: inline-block;
  padding: 16px 50px;
  background: var(--brand-orange);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  border-radius: 32px;
  text-decoration: none;
  transition: all 0.3s;
  margin: 0 10px 10px;
}

.btn-cta-primary:hover {
  background: #e55c00;
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(255,102,0,0.4);
  color: #fff;
}

.btn-cta-outline {
  display: inline-block;
  padding: 16px 50px;
  background: transparent;
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  border-radius: 32px;
  text-decoration: none;
  border: 2px solid rgba(255,255,255,0.6);
  transition: all 0.3s;
  margin: 0 10px 10px;
}

.btn-cta-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: #fff;
  color: #fff;
  transform: translateY(-2px);
}

/* ==========================================
   Page Banner（页面横幅 - 简化版）
   ========================================== */
.page-banner {
  background: linear-gradient(135deg, #001f4d 0%, #0056b3 100%);
  padding: 120px 0 80px;
  text-align: center;
  color: #fff;
}

.page-banner h1 {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 15px;
  letter-spacing: 2px;
}

.page-banner p {
  font-size: 20px;
  opacity: 0.95;
  font-weight: 300;
}

@media (max-width: 767px) {
  .page-banner h1 { font-size: 32px; }
  .page-banner p { font-size: 16px; }
}

/* ==========================================
   Section Title（区块标题 - 简化版）
   ========================================== */
.section-title {
  text-align: center;
  margin-bottom: 60px;
}

.section-title h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 15px;
}

.section-title .line {
  width: 60px;
  height: 3px;
  background: var(--brand-orange);
  margin: 20px auto 0;
}

/* ==========================================
   Category Cards（分类卡片）
   ========================================== */
.category-group {
  margin-bottom: 50px;
}

.category-group h3 {
  font-size: 28px;
  font-weight: 600;
  color: var(--brand-blue);
  margin-bottom: 30px;
  padding-bottom: 15px;
  border-bottom: 2px solid var(--brand-orange);
  display: flex;
  align-items: center;
  gap: 10px;
}

.category-group h3 i {
  font-size: 32px;
}

.category-card {
  background: #fff;
  border: 1px solid #eee;
  border-radius: 12px;
  padding: 40px 30px;
  text-align: center;
  transition: all 0.3s ease;
  height: 100%;
  cursor: pointer;
}

.category-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0,86,179,0.15);
  border-color: var(--brand-blue);
}

.category-icon {
  width: 90px;
  height: 90px;
  background: linear-gradient(135deg, var(--brand-blue), #003366);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 25px;
  font-size: 36px;
  color: #fff;
  transition: all 0.3s ease;
}

.category-card:hover .category-icon {
  transform: scale(1.1);
  box-shadow: 0 10px 30px rgba(0,86,179,0.3);
}

.category-card h4 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--text-dark);
}

.category-card p {
  color: var(--text-light);
  font-size: 14px;
  margin-bottom: 25px;
  line-height: 1.7;
  min-height: 48px;
}

.category-link {
  color: var(--brand-blue);
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 10px 25px;
  border: 2px solid var(--brand-blue);
  border-radius: 25px;
  transition: all 0.3s ease;
}

.category-link:hover {
  background: var(--brand-blue);
  color: #fff;
  gap: 10px;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,86,179,0.3);
}

@media (max-width: 767px) {
  .category-card { padding: 30px 20px; }
  .category-group h3 { font-size: 22px; }
}

/* ==========================================
   Product Cards（产品卡片）
   ========================================== */
.product-card {
  background: #fff;
  border: 1px solid #eee;
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s ease;
  height: 100%;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.12);
  border-color: var(--brand-blue);
}

.product-img {
  width: 100%;
  height: 220px;
  background: linear-gradient(135deg, #e9ecef, #dee2e6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
  color: var(--brand-blue);
}

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

.product-body {
  padding: 25px;
}

.product-body h4 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-dark);
}

.product-body p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 15px;
  border-top: 1px solid #f0f0f0;
}

.product-price {
  font-size: 18px;
  font-weight: 700;
  color: var(--brand-orange);
}

.product-btn {
  padding: 8px 20px;
  background: var(--brand-blue);
  color: #fff;
  border: none;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.3s ease;
  text-decoration: none;
}

.product-btn:hover {
  background: var(--brand-orange);
  transform: translateY(-2px);
  color: #fff;
}

/* ==========================================
   View More Button（查看更多按钮）
   ========================================== */
.view-more-btn {
  display: inline-block;
  padding: 15px 40px;
  background: transparent;
  color: var(--brand-blue);
  border: 2px solid var(--brand-blue);
  border-radius: 30px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
}

.view-more-btn:hover {
  background: var(--brand-blue);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0,86,179,0.3);
}

/* ==========================================
   Page Header with Category Tabs
   ========================================== */
.page-header {
  background: #fff;
  padding: 30px 0;
  border-bottom: 1px solid #eee;
  margin-bottom: 40px;
}

.category-tabs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.category-tab {
  padding: 12px 30px;
  background: var(--bg-light);
  border: 2px solid transparent;
  border-radius: 30px;
  font-weight: 500;
  color: var(--text-dark);
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
}

.category-tab:hover, .category-tab.active {
  background: var(--brand-orange);
  color: #fff;
  border-color: var(--brand-orange);
}

@media (max-width: 767px) {
  .category-tab {
    padding: 10px 20px;
    font-size: 14px;
  }
}

/* ==========================================
   News Cards（新闻卡片）
   ========================================== */
.news-section { padding: 60px 0 100px; }

.news-card {
  background: #fff;
  border: 1px solid #eee;
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.12);
  border-color: var(--brand-blue);
}

.news-img {
  width: 100%;
  height: 220px;
  background: linear-gradient(135deg, #e9ecef, #dee2e6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 72px;
  color: var(--brand-blue);
  overflow: hidden;
}

.news-img i { transition: transform 0.3s ease; }
.news-card:hover .news-img i { transform: scale(1.1); }

.news-body {
  padding: 25px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-date {
  font-size: 13px;
  color: var(--brand-orange);
  font-weight: 600;
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.news-body h4 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--text-dark);
  line-height: 1.5;
  flex: 1;
}

.news-body p {
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-link {
  color: var(--brand-blue);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all 0.3s ease;
}

.news-link:hover {
  gap: 10px;
  color: var(--brand-orange);
}

/* ==========================================
   Featured News（推荐新闻）
   ========================================== */
.featured-news {
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 40px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.featured-img {
  width: 100%;
  height: 350px;
  background: linear-gradient(135deg, #001f4d 0%, #0056b3 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 120px;
  color: rgba(255,255,255,0.3);
  position: relative;
}

.featured-badge {
  position: absolute;
  top: 20px;
  left: 20px;
  background: var(--brand-orange);
  color: #fff;
  padding: 8px 20px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 14px;
}

.featured-content { padding: 40px; }

.featured-content h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-dark);
}

.featured-content p {
  color: var(--text-light);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 25px;
}

@media (max-width: 767px) {
  .featured-content h2 { font-size: 24px; }
  .featured-img { height: 250px; }
  .featured-content { padding: 25px; }
}

/* ==========================================
   Pagination（分页）
   ========================================== */
.pagination-section {
  padding: 40px 0;
  text-align: center;
}

.page-link {
  color: var(--text-dark);
  border: 1px solid #ddd;
  padding: 10px 18px;
  margin: 0 5px;
  border-radius: 5px;
  transition: all 0.3s ease;
}

.page-link:hover, .page-link.active {
  background: var(--brand-orange);
  border-color: var(--brand-orange);
  color: #fff;
}

/* ==========================================
   Contact Cards（联系卡片）
   ========================================== */
.contact-section { padding: 80px 0; }

.contact-card {
  background: #fff;
  padding: 50px 40px;
  text-align: center;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  height: 100%;
  transition: all 0.3s ease;
}

.contact-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.12);
}

.contact-icon {
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, var(--brand-blue), #003366);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 25px;
  font-size: 40px;
  color: #fff;
}

.contact-card h4 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--text-dark);
}

.contact-card p {
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 0;
}

.contact-value {
  font-size: 18px;
  color: var(--brand-blue);
  font-weight: 600;
  margin-top: 10px;
}

@media (max-width: 767px) {
  .contact-card { padding: 40px 30px; }
  .contact-icon {
    width: 80px;
    height: 80px;
    font-size: 32px;
  }
}

/* ==========================================
   Contact Form（联系表单）
   ========================================== */
.form-section {
  background: #fff;
  padding: 60px 40px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.form-section h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-dark);
}

.form-section p {
  color: var(--text-light);
  margin-bottom: 30px;
}

.form-control {
  padding: 15px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 15px;
  transition: all 0.3s ease;
}

.form-control:focus {
  border-color: var(--brand-blue);
  box-shadow: 0 0 0 3px rgba(0,86,179,0.1);
}

.form-label {
  font-weight: 500;
  color: var(--text-dark);
  margin-bottom: 10px;
}

.btn-submit {
  padding: 15px 50px;
  background: var(--brand-orange);
  color: #fff;
  border: none;
  border-radius: 30px;
  font-size: 16px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-submit:hover {
  background: #e55c00;
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(255,102,0,0.3);
}

@media (max-width: 767px) {
  .form-section { padding: 40px 30px; }
}

/* ==========================================
   Map Section（地图区域）
   ========================================== */
.map-section { padding: 60px 0; }

.map-container {
  background: #e9ecef;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 80px;
  color: var(--brand-blue);
}

/* ==========================================
   Solution Cards（解决方案卡片）
   ========================================== */
.solutions-section { padding: 80px 0; }

.solution-card {
  background: #fff;
  padding: 50px;
  text-align: center;
  border-radius: 0;
  transition: all 0.3s ease;
  height: 100%;
  position: relative;
  overflow: hidden;
  border: 1px solid #eee;
}

.solution-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--brand-blue);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

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

.solution-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
  border-color: var(--brand-blue);
}

.solution-icon {
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, var(--brand-blue), #003366);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 30px;
  font-size: 40px;
  color: #fff;
}

.solution-card h4 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-dark);
}

.solution-card p {
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 25px;
}

.solution-features {
  text-align: left;
  padding-top: 20px;
  border-top: 1px solid #eee;
}

.solution-features h5 {
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-blue);
  margin-bottom: 15px;
}

.solution-features ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.solution-features li {
  padding: 5px 0;
  color: var(--text-light);
  font-size: 13px;
  position: relative;
  padding-left: 20px;
}

.solution-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--brand-orange);
  font-weight: bold;
}

.solution-btn {
  display: inline-block;
  padding: 12px 30px;
  background: var(--brand-orange);
  color: #fff;
  text-decoration: none;
  border-radius: 25px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.solution-btn:hover {
  background: #e55c00;
  color: #fff;
  transform: translateY(-2px);
}

/* ==========================================
   Breadcrumb（面包屑导航）
   ========================================== */
.breadcrumb-section {
  background: #fff;
  padding: 20px 0;
  border-bottom: 1px solid #eee;
}

.breadcrumb a {
  color: var(--text-light);
  text-decoration: none;
}

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

.breadcrumb-item.active {
  color: var(--text-dark);
  font-weight: 500;
}

/* ==========================================
   Product Detail（产品详情）
   ========================================== */
.product-detail-section { padding: 60px 0; }

.product-gallery {
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.main-image {
  width: 100%;
  height: 500px;
  background: linear-gradient(135deg, #e9ecef, #dee2e6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 120px;
  color: var(--brand-blue);
}

.thumbnail-images {
  display: flex;
  gap: 10px;
  padding: 20px;
  background: #f8f9fa;
}

.thumbnail {
  width: 100px;
  height: 100px;
  background: #fff;
  border: 2px solid transparent;
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  color: var(--brand-blue);
  cursor: pointer;
  transition: all 0.3s ease;
}

.thumbnail:hover, .thumbnail.active {
  border-color: var(--brand-orange);
  transform: scale(1.05);
}

.product-info {
  background: #fff;
  border-radius: 8px;
  padding: 40px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  height: 100%;
}

.product-title {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--text-dark);
}

.product-subtitle {
  font-size: 18px;
  color: var(--brand-blue);
  font-weight: 500;
  margin-bottom: 20px;
}

.product-price {
  font-size: 36px;
  font-weight: 700;
  color: var(--brand-orange);
  margin-bottom: 30px;
}

.product-description {
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 30px;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 30px;
}

.spec-table th, .spec-table td {
  padding: 15px;
  border-bottom: 1px solid #eee;
  text-align: left;
}

.spec-table th {
  background: #f8f9fa;
  font-weight: 600;
  color: var(--text-dark);
  width: 200px;
}

.spec-table td { color: var(--text-light); }

.action-buttons {
  display: flex;
  gap: 15px;
  margin-top: 30px;
}

.btn-primary {
  padding: 15px 50px;
  background: var(--brand-orange);
  color: #fff;
  border: none;
  border-radius: 30px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background: #e55c00;
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(255,102,0,0.3);
}

.btn-secondary {
  padding: 15px 40px;
  background: transparent;
  color: var(--brand-blue);
  border: 2px solid var(--brand-blue);
  border-radius: 30px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
}

.btn-secondary:hover {
  background: var(--brand-blue);
  color: #fff;
}

.specs-section {
  background: #fff;
  padding: 60px 0;
  margin: 40px 0;
}

.specs-section h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 40px;
  text-align: center;
}

.related-section { padding: 60px 0; }

.related-section h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 40px;
  text-align: center;
}

.related-card {
  background: #fff;
  border: 1px solid #eee;
  border-radius: 8px;
  padding: 25px;
  transition: all 0.3s ease;
  height: 100%;
}

.related-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.12);
  border-color: var(--brand-blue);
}

.related-card h4 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-dark);
}

.related-card p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 15px;
}

@media (max-width: 767px) {
  .main-image { height: 300px; }
  .product-info { padding: 25px; }
  .product-title { font-size: 24px; }
  .product-price { font-size: 28px; }
  .spec-table th, .spec-table td { padding: 10px; }
  .action-buttons { flex-direction: column; }
}

/* ==========================================
   Category Hero Section（分类页横幅）
   ========================================== */
.hero-section {
  background: linear-gradient(135deg, var(--brand-blue) 0%, #003d82 100%);
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
  margin-top: 70px;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="white" stroke-opacity="0.03" stroke-width="1"/></svg>');
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-title { font-size: 48px; font-weight: 700; color: #fff; margin-bottom: 20px; position: relative; }
.hero-subtitle { font-size: 18px; color: rgba(255,255,255,0.85); position: relative; }

@media (max-width: 767px) {
  .hero-title { font-size: 32px; }
}

/* ==========================================
   Category Product Cards（分类页产品卡片）
   ========================================== */
.product-image-wrapper {
  position: relative;
  overflow: hidden;
  background: #f8f9fa;
}

.product-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform 0.4s ease;
}

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

.product-image-placeholder {
  width: 100%;
  height: 220px;
  background: linear-gradient(135deg, #e8f0ff, #d0e0ff);
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-image-placeholder i { font-size: 60px; color: var(--brand-blue); opacity: 0.3; }

.product-badge {
  position: absolute;
  top: 15px;
  left: 15px;
  background: linear-gradient(135deg, var(--brand-orange), #ff8c00);
  color: #fff;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  z-index: 1;
}

.product-body { padding: 25px; }
.product-model { font-size: 12px; color: var(--brand-blue); margin-bottom: 8px; }
.product-desc { font-size: 14px; color: var(--text-light); margin-bottom: 20px; line-height: 1.6; }

.btn-view-detail {
  width: 100%;
  background: linear-gradient(135deg, var(--brand-blue), #003d82);
  color: #fff;
  border: none;
  padding: 12px;
  border-radius: 8px;
  font-weight: 500;
  transition: all 0.3s ease;
}

.btn-view-detail:hover {
  background: linear-gradient(135deg, var(--brand-orange), #ff8c00);
  color: #fff;
  transform: translateY(-2px);
}

/* SPECS in card */
.tech-specs { padding: 0 25px 25px; }

.spec-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  border-bottom: 1px solid #f0f0f0;
  font-size: 13px;
}

.spec-item:last-child { border-bottom: none; }
.spec-label { color: var(--text-light); flex: 1; }
.spec-value { color: var(--text-dark); font-weight: 500; }

/* Empty State */
.empty-state { text-align: center; padding: 80px 20px; }
.empty-state i { font-size: 64px; color: #ddd; margin-bottom: 20px; }
.empty-state h4 { color: var(--text-light); }

/* Section Title (alt style) */
.section-title-line {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 10px;
}

.section-title-line::after {
  content: '';
  display: block;
  width: 50px;
  height: 3px;
  background: var(--brand-orange);
  margin-top: 12px;
}

.section-subtitle { font-size: 16px; color: var(--text-light); margin-top: 15px; }