/* 基础样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* 主色调 - 深蓝绿色系，更专业稳重 */
  --primary-color: #0d4f6f;
  --primary-light: #1a7a9e;
  --primary-dark: #08354a;
  --secondary-color: #0a3d54;
  --accent-color: #00d4aa;
  --accent-light: #5ee7c6;
  
  /* 文字颜色 */
  --text-color: #1a202c;
  --text-light: #4a5568;
  --text-muted: #718096;
  
  /* 背景颜色 */
  --bg-color: #ffffff;
  --bg-light: #f7fafc;
  --bg-dark: #edf2f7;
  
  /* 边框和阴影 */
  --border-color: #e2e8f0;
  --border-light: #edf2f7;
  
  /* 尺寸 */
  --header-height: 70px;
  --top-bar-height: 40px;
  
  /* 动画 */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* 阴影 - 更柔和的层次感 */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 20px rgba(0, 212, 170, 0.3);
  
  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  color: var(--text-color);
  line-height: 1.6;
  background: var(--bg-color);
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

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

/* 容器 - 优化响应式 */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 12px;
  }
}

/* 顶部联系信息栏 - 更现代的设计 */
.top-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--top-bar-height);
  background: linear-gradient(90deg, var(--primary-dark) 0%, var(--primary-color) 50%, var(--primary-light) 100%);
  z-index: 1001;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.top-bar-inner {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  height: 100%;
}

.top-bar-contact {
  display: flex;
  align-items: center;
  gap: 30px;
}

.top-bar-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}

.top-bar-item:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.top-bar-item i {
  font-size: 13px;
  color: var(--accent-color);
}

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

/* 头部导航 - 更现代的设计 */
.header {
  position: fixed;
  top: var(--top-bar-height);
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  z-index: 1000;
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(255, 255, 255, 0.98);
}

@media (max-width: 768px) {
  .header {
    top: 0;
  }
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
  padding: 8px 0;
}

.logo-img {
  height: 48px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  transition: var(--transition);
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-color);
  white-space: nowrap;
  letter-spacing: -0.5px;
}

@media (max-width: 768px) {
  .logo-img {
    height: 40px;
    max-width: 150px;
  }
  
  .logo-text {
    font-size: 17px;
  }
}

@media (max-width: 480px) {
  .logo-img {
    height: 36px;
    max-width: 130px;
  }
  
  .logo-text {
    font-size: 15px;
  }
}

/* 导航菜单 - 更精致的样式 */
.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  padding: 10px 16px;
  color: var(--text-light);
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: var(--transition);
  white-space: nowrap;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 20px;
  height: 2px;
  background: var(--accent-color);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color);
  background: rgba(13, 79, 111, 0.06);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: translateX(-50%) scaleX(1);
}

@media (max-width: 1024px) {
  .nav-link {
    padding: 8px 12px;
    font-size: 13px;
  }
}

@media (max-width: 900px) {
  .nav {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 4px;
    overflow-y: auto;
    z-index: 999;
  }

  .nav.active {
    display: flex;
  }

  .nav-link {
    padding: 16px 20px;
    font-size: 16px;
    color: var(--text-color);
    border-radius: var(--radius-md);
    width: 100%;
    text-align: left;
    margin-bottom: 4px;
  }
  
  .nav-link:hover,
  .nav-link.active {
    background: var(--bg-light);
    color: var(--primary-color);
  }
  
  .nav-link::after {
    display: none;
  }
}

/* 移动端菜单按钮 - 更现代的设计 */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 10px;
  background: var(--bg-light);
  border: none;
  z-index: 1001;
  border-radius: var(--radius-md);
  transition: var(--transition);
}

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

.mobile-menu-btn span {
  width: 22px;
  height: 2.5px;
  background: var(--primary-color);
  transition: var(--transition);
  border-radius: 2px;
}

.mobile-menu-btn.active {
  background: var(--primary-color);
}

.mobile-menu-btn.active span {
  background: white;
}

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

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

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

@media (max-width: 900px) {
  .mobile-menu-btn {
    display: flex;
  }
}

/* 语言选择器 - 更现代的设计 */
.lang-dropdown {
  position: relative;
  margin-left: 20px;
}

.lang-dropdown-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg-light);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  color: var(--text-color);
}

.lang-dropdown-btn:hover {
  background: white;
  border-color: var(--primary-color);
  box-shadow: var(--shadow-sm);
}

.lang-flag {
  display: flex;
  align-items: center;
}

.lang-name {
  font-weight: 600;
}

.lang-dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 10px;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px) scale(0.95);
  transition: var(--transition);
  z-index: 1002;
  border: 1px solid var(--border-light);
  padding: 8px;
}

.lang-dropdown.active .lang-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  transition: var(--transition);
  border-radius: var(--radius-md);
  cursor: pointer;
}

.lang-option:hover,
.lang-option.active {
  background: var(--bg-light);
}

.lang-option.active {
  background: linear-gradient(135deg, rgba(0, 212, 170, 0.1) 0%, rgba(13, 79, 111, 0.05) 100%);
  color: var(--primary-color);
}

@media (max-width: 768px) {
  .lang-dropdown {
    margin-left: auto;
    margin-right: 12px;
  }
  
  .lang-dropdown-btn {
    padding: 8px 12px;
  }
  
  .lang-dropdown-btn .lang-name {
    display: none;
  }
  
  .lang-option .lang-name {
    display: block;
    font-size: 14px;
  }
  
  .lang-dropdown-menu {
    min-width: 180px;
    right: -10px;
  }
}

/* 主要内容区域 */
.main {
  padding-top: calc(var(--top-bar-height) + var(--header-height));
  min-height: 100vh;
}

@media (max-width: 768px) {
  .main {
    padding-top: var(--header-height);
  }
}

/* Hero 区域 - 更现代的设计 */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--primary-dark);
}

.hero-slider {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0;
  transition: opacity 1s ease;
  display: flex;
  align-items: center;
  z-index: 2;
  padding: 120px 24px 160px;
}

.hero-slide .container {
  position: relative;
  z-index: 3;
}

.hero-slide.active {
  opacity: 1;
}

.hero-slide-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.hero-slide-bg::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(13, 79, 111, 0.3) 0%, rgba(13, 79, 111, 0.15) 50%, rgba(26, 122, 158, 0.1) 100%);
  z-index: 1;
}

/* 纯色背景的slide */
.hero-slide-solid .hero-slide-bg-solid {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 50%, var(--primary-light) 100%);
}

.hero-slide-solid .hero-slide-bg-solid::after {
  display: none;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 750px;
  padding: 40px 0;
}

.hero-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
  color: white;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  font-size: 22px;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 40px;
  line-height: 1.7;
  font-weight: 400;
  max-width: 700px;
}

.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-dots {
  position: absolute;
  bottom: 50px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 3;
}

.hero-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}

.hero-dot:hover {
  background: rgba(255, 255, 255, 0.6);
}

.hero-dot.active {
  background: var(--accent-color);
  transform: scale(1.3);
  border-color: rgba(255, 255, 255, 0.5);
}

@media (max-width: 1024px) {
  .hero {
    min-height: 550px;
  }
  
  .hero-title {
    font-size: 44px;
  }
  
  .hero-subtitle {
    font-size: 19px;
  }
}

@media (max-width: 768px) {
  .hero {
    min-height: 500px;
  }
  
  .hero-title {
    font-size: 36px;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
  }
  
  .hero-subtitle {
    font-size: 17px;
    margin-bottom: 32px;
  }
  
  .hero-content {
    padding: 40px 0;
  }
  
  .hero-btns {
    flex-direction: column;
    gap: 12px;
  }
  
  .hero-dots {
    bottom: 30px;
  }
}

@media (max-width: 480px) {
  .hero {
    min-height: 450px;
  }
  
  .hero-title {
    font-size: 28px;
    letter-spacing: 0;
  }
  
  .hero-subtitle {
    font-size: 15px;
  }
  
  .hero-subtitle {
    font-size: 15px;
  }
}

/* 按钮样式 - 更现代的设计 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: var(--transition);
  cursor: pointer;
  border: none;
  white-space: nowrap;
  letter-spacing: 0.3px;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-color) 0%, #00b894 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(0, 212, 170, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #00c9a0 0%, #00a884 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 212, 170, 0.45);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border: 1.5px solid rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.7);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--primary-color);
  color: white;
  box-shadow: 0 4px 15px rgba(13, 79, 111, 0.3);
}

.btn-secondary:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(13, 79, 111, 0.4);
}

@media (max-width: 768px) {
  .btn {
    width: 100%;
    padding: 14px 24px;
    font-size: 14px;
  }
}

/* 通用区域样式 */
.section {
  padding: 100px 0;
}

/* 区域标题 - 更精致的设计 */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-title {
  font-size: 42px;
  font-weight: 800;
  color: var(--text-color);
  margin-bottom: 16px;
  line-height: 1.2;
  letter-spacing: -0.5px;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-color), var(--primary-light));
  border-radius: 2px;
  margin: 16px auto 0;
}

.section-subtitle {
  font-size: 18px;
  color: var(--text-light);
  line-height: 1.7;
  max-width: 600px;
  margin: 0 auto;
}

@media (max-width: 1024px) {
  .section {
    padding: 80px 0;
  }
  
  .section-title {
    font-size: 36px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }
  
  .section-header {
    margin-bottom: 40px;
  }
  
  .section-title {
    font-size: 30px;
    margin-bottom: 12px;
  }
  
  .section-title::after {
    width: 50px;
    height: 3px;
    margin-top: 12px;
  }
  
  .section-subtitle {
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  .section {
    padding: 50px 0;
  }
  
  .section-title {
    font-size: 26px;
  }
}

/* 统计数据区域 - 更现代的设计 */
.stats-section {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 50%, var(--primary-light) 100%);
  padding: 80px 0;
  color: white;
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23ffffff' fill-opacity='0.03' fill-rule='evenodd'/%3E%3C/svg%3E");
  opacity: 0.6;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  position: relative;
  z-index: 1;
}

.stat-item {
  text-align: center;
  padding: 30px 20px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: var(--transition);
  min-height: 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.stat-item-first {
  background: rgba(255, 255, 255, 0.15);
}

.stat-item:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.stat-number {
  font-size: 52px;
  font-weight: 800;
  margin-bottom: 8px;
  line-height: 1;
  color: #ffffff;
  display: block;
}

.stat-label {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
  letter-spacing: 0.5px;
}

@media (max-width: 1024px) {
  .stats-section {
    padding: 60px 0;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  
  .stat-number {
    font-size: 44px;
  }
  
  .stat-item {
    padding: 24px 16px;
  }
}

@media (max-width: 768px) {
  .stats-section {
    padding: 40px 0;
  }
  
  .stat-number {
    font-size: 36px;
  }
  
  .stat-label {
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }
  
  .stat-item {
    padding: 15px 10px;
  }
  
  .stat-number {
    font-size: 28px;
  }
}

/* 产品网格 - 更现代的卡片设计 */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.product-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-slow);
  border: 1px solid var(--border-light);
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-color), var(--primary-light));
  transform: scaleX(0);
  transition: var(--transition);
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

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

.product-image {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  position: relative;
  min-height: 200px;
  flex-shrink: 0;
}

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

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

.product-image-icon {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg-light) 0%, #e8f0f8 100%);
  font-size: 60px;
  color: var(--primary-color);
  opacity: 0.8;
  transition: var(--transition);
}

.product-image-real {
  width: 100%;
  height: 100%;
  overflow: hidden;
  position: relative;
}

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

/* 第一张产品卡片图片放大，遮盖黑色区域 */
.product-card:nth-child(1) .product-image-real img {
  transform: scale(1.15);
  object-position: center 45%;
}

.product-card:nth-child(1):hover .product-image-real img {
  transform: scale(1.25);
}

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

.product-card:hover .product-image-icon {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  color: white;
  opacity: 1;
}

.product-badge {
  position: absolute;
  top: 15px;
  right: 15px;
  padding: 6px 14px;
  background: linear-gradient(135deg, var(--accent-color) 0%, #00b894 100%);
  color: white;
  font-size: 12px;
  font-weight: 700;
  border-radius: var(--radius-full);
  box-shadow: 0 2px 10px rgba(0, 212, 170, 0.3);
  z-index: 2;
}

.product-content {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-category {
  font-size: 12px;
  color: var(--accent-color);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
}

.product-name,
.product-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-color);
  line-height: 1.4;
}

.product-desc {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 20px;
}

.product-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary-color);
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
}

.product-link:hover {
  gap: 12px;
  color: var(--accent-color);
}

@media (max-width: 1024px) {
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
}

@media (max-width: 768px) {
  .products-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .product-content {
    padding: 20px;
  }
  
  .product-title {
    font-size: 18px;
  }
}

/* 关于我们区域 */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-image img {
  width: 100%;
  height: auto;
}

.about-content h3 {
  font-size: 32px;
  margin-bottom: 20px;
  color: var(--text-color);
}

.about-content p {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 30px;
}

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

.about-feature {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.about-feature i {
  width: 40px;
  height: 40px;
  background: rgba(0, 102, 204, 0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-size: 18px;
  flex-shrink: 0;
}

.about-feature h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.about-feature p {
  font-size: 14px;
  color: var(--text-light);
  margin: 0;
}

@media (max-width: 1024px) {
  .about-grid {
    gap: 40px;
  }
  
  .about-content h3 {
    font-size: 28px;
  }
}

@media (max-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  .about-image {
    order: -1;
  }
  
  .about-content h3 {
    font-size: 24px;
    margin-bottom: 16px;
  }
  
  .about-content p {
    font-size: 15px;
    margin-bottom: 24px;
  }
  
  .about-features {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

/* 研发实力区域 */
.rd-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.rd-card {
  background: white;
  border-radius: var(--radius-md);
  padding: 30px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.rd-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.rd-card-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: white;
  font-size: 24px;
}

.rd-card-number {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 8px;
}

.rd-card-label {
  font-size: 15px;
  color: var(--text-light);
}

@media (max-width: 1024px) {
  .rd-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .rd-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  
  .rd-card {
    padding: 24px 20px;
  }
  
  .rd-card-icon {
    width: 50px;
    height: 50px;
    font-size: 20px;
    margin-bottom: 16px;
  }
  
  .rd-card-number {
    font-size: 28px;
  }
  
  .rd-card-label {
    font-size: 14px;
  }
}

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

/* 技术列表 */
.tech-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.tech-item {
  background: white;
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.tech-item:hover {
  box-shadow: var(--shadow-md);
}

.tech-icon {
  width: 50px;
  height: 50px;
  background: rgba(0, 102, 204, 0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-size: 20px;
  margin-bottom: 16px;
}

.tech-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.tech-desc {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
}

@media (max-width: 1024px) {
  .tech-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .tech-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .tech-item {
    padding: 20px;
  }
}

/* 时间线 */
.timeline {
  position: relative;
  padding: 20px 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background: var(--border-color);
}

.timeline-item {
  display: flex;
  justify-content: flex-end;
  padding-right: 50%;
  position: relative;
  margin-bottom: 40px;
}

.timeline-item:nth-child(even) {
  justify-content: flex-start;
  padding-right: 0;
  padding-left: 50%;
}

.timeline-content {
  max-width: 400px;
  padding: 25px;
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin-right: 30px;
}

.timeline-item:nth-child(even) .timeline-content {
  margin-right: 0;
  margin-left: 30px;
}

.timeline-year {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 60px;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 14px;
}

.timeline-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.timeline-desc {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
}

@media (max-width: 768px) {
  .timeline::before {
    left: 20px;
  }
  
  .timeline-item,
  .timeline-item:nth-child(even) {
    padding-left: 60px;
    padding-right: 0;
    justify-content: flex-start;
  }
  
  .timeline-content,
  .timeline-item:nth-child(even) .timeline-content {
    margin-left: 0;
    margin-right: 0;
    max-width: 100%;
    padding: 20px;
  }
  
  .timeline-year {
    left: 20px;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    font-size: 11px;
  }
  
  .timeline-title {
    font-size: 16px;
  }
}

/* 联系区域 */
.contact-section {
  background: var(--bg-light);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-info h3 {
  font-size: 28px;
  margin-bottom: 30px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  margin-bottom: 25px;
}

.contact-icon {
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 20px;
  flex-shrink: 0;
}

.contact-details h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.contact-details p {
  font-size: 15px;
  color: var(--text-light);
}

.contact-form {
  background: white;
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

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

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 15px;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

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

@media (max-width: 1024px) {
  .contact-grid {
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .contact-info h3 {
    font-size: 24px;
    margin-bottom: 24px;
  }
  
  .contact-form {
    padding: 24px;
  }
}

/* 页脚 - 更现代的设计 */
.footer {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 50%, var(--secondary-color) 100%);
  color: white;
  padding: 100px 0 40px;
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23ffffff' fill-opacity='0.03' fill-rule='evenodd'/%3E%3C/svg%3E");
  opacity: 0.6;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 60px;
  position: relative;
  z-index: 1;
}

.footer-brand {
  display: flex;
  flex-direction: column;
}

.footer-logo-img {
  max-width: 60px;
  height: auto;
  margin-bottom: 20px;
  display: block;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
  font-size: 15px;
  max-width: 450px;
}

.footer-title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 28px;
  color: white;
  letter-spacing: 0.5px;
  position: relative;
  padding-bottom: 14px;
  text-transform: uppercase;
}

.footer-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-color), var(--accent-light));
  border-radius: 3px;
}

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

.footer-links li {
  margin-bottom: 16px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.75);
  transition: var(--transition);
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.footer-links a::before {
  content: '›';
  color: var(--accent-color);
  font-size: 20px;
  line-height: 1;
  transition: var(--transition);
  font-weight: bold;
}

.footer-links a:hover {
  color: white;
  padding-left: 8px;
}

.footer-links a:hover::before {
  transform: translateX(4px);
  color: var(--accent-light);
}

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

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
  color: rgba(255, 255, 255, 0.8);
  font-size: 15px;
  line-height: 1.6;
}

.footer-contact i {
  color: var(--accent-color);
  margin-top: 2px;
  font-size: 18px;
  min-width: 20px;
  text-align: center;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 35px;
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  position: relative;
  z-index: 1;
}

.footer-bottom p {
  margin: 0;
}

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .footer {
    padding: 50px 0 24px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
    margin-bottom: 30px;
  }
  
  .footer-title {
    margin-bottom: 16px;
  }
  
  .footer-bottom {
    padding-top: 24px;
  }
}

/* 产品详情页 */
.product-detail {
  padding: 40px 0;
}

.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.product-gallery {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.product-gallery img {
  width: 100%;
  height: auto;
}

.product-info h1 {
  font-size: 36px;
  margin-bottom: 20px;
}

.product-info .description {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 30px;
}

.product-specs {
  background: var(--bg-light);
  border-radius: var(--radius-md);
  padding: 30px;
}

.product-specs h3 {
  font-size: 20px;
  margin-bottom: 20px;
}

.spec-item {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
}

.spec-item:last-child {
  border-bottom: none;
}

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

.spec-value {
  font-weight: 600;
}

@media (max-width: 1024px) {
  .product-detail-grid {
    gap: 40px;
  }
  
  .product-info h1 {
    font-size: 30px;
  }
}

@media (max-width: 768px) {
  .product-detail-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  .product-info h1 {
    font-size: 26px;
  }
  
  .product-specs {
    padding: 24px;
  }
}

/* 案例研究 */
.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.case-card {
  background: white;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.case-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.case-image {
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

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

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

.case-content {
  padding: 24px;
}

.case-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(0, 102, 204, 0.1);
  color: var(--primary-color);
  font-size: 13px;
  font-weight: 500;
  border-radius: 20px;
  margin-bottom: 12px;
}

.case-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
}

.case-desc {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.6;
}

@media (max-width: 768px) {
  .case-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .case-content {
    padding: 20px;
  }
  
  .case-title {
    font-size: 18px;
  }
}

/* 面包屑导航 */
.breadcrumb {
  background: var(--bg-light);
  padding: 16px 0;
  margin-bottom: 30px;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
}

.breadcrumb-list a {
  color: var(--text-light);
}

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

.breadcrumb-list .current {
  color: var(--text-color);
  font-weight: 500;
}

.breadcrumb-separator {
  color: var(--text-light);
}

/* 页面标题 */
.page-header {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  padding: 80px 0;
  text-align: center;
  color: white;
}

.page-title {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 16px;
}

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

@media (max-width: 768px) {
  .page-header {
    padding: 60px 0;
  }
  
  .page-title {
    font-size: 32px;
  }
  
  .page-subtitle {
    font-size: 16px;
  }
}

/* 加载动画 */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

/* 滚动条样式 */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-light);
}

/* 表单样式优化 */
.form-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-color);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 15px;
  transition: var(--transition);
  background: white;
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

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

@media (max-width: 768px) {
  .form-input,
  .form-textarea {
    padding: 14px 16px;
    font-size: 16px;
  }
}

/* 联系信息样式 */
.contact-text h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-color);
}

.contact-text p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.5;
}

/* 关于我们页面图片样式 */
.about-image-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  border-radius: var(--radius-lg);
  opacity: 0.15;
  z-index: 0;
}

.about-image-main {
  position: relative;
  z-index: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-feature-icon {
  width: 44px;
  height: 44px;
  background: rgba(0, 102, 204, 0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-size: 18px;
  flex-shrink: 0;
}

.about-feature-text h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-color);
}

.about-feature-text p {
  font-size: 14px;
  color: var(--text-light);
  margin: 0;
  line-height: 1.5;
}

/* 技术项样式 */
.tech-number {
  width: 36px;
  height: 36px;
  background: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  margin-right: 12px;
  flex-shrink: 0;
}

/* 移动端触摸优化 */
@media (hover: none) {
  .product-card:hover,
  .case-card:hover,
  .rd-card:hover {
    transform: none;
  }
  
  .btn:hover {
    transform: none;
  }
  
  .btn-primary:active {
    background: var(--secondary-color);
  }
}

/* 禁用文本选择（移动端） */
.mobile-menu-btn,
.hero-dot,
.category-btn {
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

/* 改进的移动端滚动 */
@supports (-webkit-touch-callout: none) {
  .nav {
    -webkit-overflow-scrolling: touch;
  }
}

/* 打印样式 */
@media print {
  .header,
  .top-bar,
  .footer,
  .mobile-menu-btn,
  .back-to-top,
  .lang-dropdown {
    display: none !important;
  }
  
  .main {
    padding-top: 0;
  }
  
  .section {
    padding: 30px 0;
  }
}