/* 全局样式 */
:root {
  --primary-color: #0d47a1; /* 深蓝色主色调 */
  --secondary-color: #ff6200; /* 橙色作为点缀 */
  --dark-color: #333;
  --light-color: #f4f4f4;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --orange-color: #E96C9A;
  --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #fff;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

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

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

ul {
  list-style: none;
}

img {
  max-width: 100%;
}

.btn {
  display: inline-block;
  background: var(--primary-color);
  color: #fff;
  padding: 10px 25px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  text-align: center;
  font-size: 16px;
  transition: var(--transition);
}

.btn:hover {
  background: #0a3880;
  color: #fff;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
}

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

.section-title {
  text-align: center;
  margin-bottom: 40px;
  color: var(--primary-color);
  position: relative;
  font-size: 28px;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--secondary-color);
  margin: 10px auto;
}

/* 顶部区域样式 */
header {
  background-color: white;
  padding: 15px 0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.logo-area {
  display: flex;
  align-items: center;
}

.logo {
  margin-right: 20px;
}

.logo img {
  max-height: 60px;
}

.company-name h1 {
  color: var(--primary-color);
  font-size: 24px;
  margin-bottom: 5px;
}

.company-name p {
  color: #666;
  font-size: 14px;
}

/* 导航菜单 */
header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-menu {
  display: flex;
}

.nav-menu li {
  margin-left: 30px;
}

.nav-menu li a {
  color: var(--dark-color);
  font-weight: 600;
  padding: 5px 0;
  position: relative;
}

.nav-menu li a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  bottom: 0;
  left: 0;
  transition: var(--transition);
}

.nav-menu li a:hover::after,
.nav-menu li.active a::after {
  width: 100%;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.mobile-menu-toggle span {
  background: var(--dark-color);
  height: 3px;
  width: 25px;
  margin: 2px 0;
  transition: var(--transition);
}

/* 横幅区域 */
.banner {
  background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('../images/banner-bg.jpg');
  background-size: cover;
  background-position: center;
  color: white;
  text-align: center;
  padding: 120px 0;
}

.banner-content h2 {
  font-size: 42px;
  margin-bottom: 20px;
  letter-spacing: 2px;
}

.banner-content p {
  font-size: 18px;
  margin-bottom: 30px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* 四宫格区域 */
.grid-showcase {
  padding: 80px 0;
  background-color: #f8f9fa;
}

.grid-container {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.grid-item {
  background: white;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
}

.grid-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.grid-item h3 {
  font-size: 20px;
  color: var(--primary-color);
  margin: 0 0 15px;
}

/* 视频部分 */
.video .video-container {
  position: relative;
  padding-bottom: 56.25%; /* 16:9比例 */
  height: 0;
  overflow: hidden;
}

.video .video-container video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video h3 {
  padding: 15px;
}

.play-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0, 0, 0, 0.7);
  color: white;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  opacity: 0.8;
  transition: var(--transition);
}

.play-button:hover {
  opacity: 1;
  background: var(--secondary-color);
}

.play-button i {
  font-size: 24px;
}

/* 企业介绍 */
.company-intro {
  padding: 30px;
}

.company-intro p {
  margin-bottom: 15px;
  color: #555;
}

.company-intro .btn-outline {
  margin-top: 15px;
}

/* 公司文化和专利 */
.company-culture {
  padding: 30px;
}

.patent-showcase {
  display: flex;
  justify-content: space-between;
  margin-bottom: 20px;
}

.patent-item {
  flex: 0 0 48%;
  text-align: center;
}

.patent-item img {
  border: 1px solid #ddd;
  padding: 5px;
  margin-bottom: 10px;
  height: 120px;
  object-fit: cover;
}

.patent-item span {
  display: block;
  color: #555;
  font-size: 14px;
}

.culture-text {
  margin-top: 20px;
}

.culture-text p {
  margin-bottom: 10px;
}

/* 购买渠道 */
.purchase-channel {
  padding: 80px 0;
  background-color: #fff;
}

.form-container {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 30px;
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-size: 16px;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary-color);
  outline: none;
  box-shadow: 0 0 0 2px rgba(13, 71, 161, 0.2);
}

.submit-btn {
  margin-top: 10px;
  width: 100%;
  font-size: 18px;
  padding: 12px;
}

.form-info {
  background: var(--primary-color);
  color: white;
  padding: 30px;
  border-radius: 10px;
}

.form-info h3 {
  margin-bottom: 20px;
  font-size: 24px;
}

.form-info p {
  margin-bottom: 15px;
  display: flex;
  align-items: center;
}

.form-info i {
  margin-right: 10px;
  font-size: 18px;
}

/* 售后与服务 */
.after-sale {
  padding: 80px 0;
  background-color: #f1f5f9;
}

.service-content {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.service-hotline {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 30px;
}

.service-hotline i {
  font-size: 48px;
  color: var(--secondary-color);
  margin-right: 20px;
}

.hotline-text p {
  color: #555;
  margin-bottom: 5px;
}

.hotline-text h3 {
  font-size: 32px;
  color: var(--primary-color);
}

.service-time {
  margin-bottom: 30px;
  font-size: 18px;
}

.service-policy h4 {
  color: var(--primary-color);
  margin-bottom: 15px;
  font-size: 20px;
}

.service-policy ul {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 15px;
  text-align: left;
  max-width: 500px;
  margin: 0 auto;
}

.service-policy li {
  display: flex;
  align-items: center;
}

.service-policy i {
  color: var(--success-color);
  margin-right: 10px;
}

/* 合作案例展示 */
.case-showcase {
  padding: 80px 0;
  background-color: #fff;
}

.case-slider {
  padding: 10px 0;
  display: flex;
  overflow-x: scroll;
  scroll-behavior: smooth;
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE/Edge */
  gap: 20px;
  margin-bottom: 20px;
}

.case-slider::-webkit-scrollbar {
  display: none; /* Chrome/Safari/Opera */
}

.case-item {
  flex: 0 0 300px;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
}

.case-item:hover {
  transform: translateY(-5px);
}

.case-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.case-info {
  padding: 15px;
}

.case-info h4 {
  color: var(--primary-color);
  margin-bottom: 10px;
}

.case-info p {
  color: #555;
  font-size: 14px;
}

.slider-controls {
  display: flex;
  justify-content: center;
  gap: 15px;
}

.prev-btn, .next-btn {
  background: var(--primary-color);
  color: white;
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.prev-btn:hover, .next-btn:hover {
  background: var(--secondary-color);
}

/* 底部区域 */
footer {
  background-color: #3B55A0;
  color: white;
  padding: 60px 0 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 40px;
  margin-bottom: 30px;
}

.footer-info h3 {
  font-size: 22px;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer-info h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--secondary-color);
}

.footer-info ul li {
  margin-bottom: 15px;
  display: flex;
  align-items: flex-start;
}

.footer-info ul li i {
  margin-right: 10px;
  color: var(--secondary-color);
  margin-top: 4px;
}

.footer-qrcode {
  display: flex;
  justify-content: center;
  gap: 30px;
}

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

.qrcode-item img {
  width: 120px;
  height: 120px;
  background: white;
  padding: 5px;
  margin-bottom: 10px;
}

.qrcode-item p {
  color: #aaa;
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 14px;
}
span.icp,.qr-text{
  color: #fff;
}

/* 响应式设计 */
@media (max-width: 992px) {
  .grid-container {
    grid-template-columns: repeat(1, 1fr);
  }
  
  .form-container {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

@media (max-width: 768px) {
  header .container {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .logo-area {
    width: 100%;
    margin-bottom: 15px;
    justify-content: space-between;
  }
  
  .mobile-menu-toggle {
    display: flex;
    position: absolute;
    top: 25px;
    right: 20px;
  }
  
  .nav-menu {
    display: none;
    flex-direction: column;
    width: 100%;
    background: #fff;
    padding: 20px 0;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
  }
  
  .nav-menu.active {
    display: flex;
  }
  
  .nav-menu li {
    margin: 0;
    padding: 10px 0;
    text-align: center;
  }
  
  .banner-content h2 {
    font-size: 32px;
  }
  
  .service-policy ul {
    grid-template-columns: 1fr;
  }
  
  .footer-qrcode {
    flex-direction: column;
    align-items: center;
  }
} 

.nav-menu  li a {
  color: #4b4b4b;
  display: inline-block;
  padding: 20px 20px;
}
.nav-menu ul li a.active, .nav-menu ul li:hover a {
  color: #fff;
  background-color: #305dc3;
  display: inline-block;
  padding: 20px 26px;
}