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

body {
  font-family: "Arial", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  color: #333;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: all 0.3s ease;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.nav-logo h2 {
  color: #2563eb;
  font-size: 1.5rem;
  font-weight: bold;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-menu a {
  text-decoration: none;
  color: #333;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-menu a:hover {
  color: #2563eb;
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: #333;
  margin: 3px 0;
  transition: 0.3s;
}

/* 英雄区域 */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  padding-top: 70px;
  color: white;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-content h1 {
  font-size: 3.5rem;
  font-weight: bold;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.hero-features {
  display: flex;
  gap: 2rem;
  margin-bottom: 2rem;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.feature-item i {
  font-size: 1.2rem;
  color: #fbbf24;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
}

.btn-primary,
.btn-secondary {
  padding: 12px 30px;
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-primary {
  background: #fbbf24;
  color: #333;
}

.btn-primary:hover {
  background: #f59e0b;
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: white;
  border: 2px solid white;
}

.btn-secondary:hover {
  background: white;
  color: #333;
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.charging-station-visual {
  width: 200px;
  height: 200px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
}

.charging-station-visual i {
  font-size: 5rem;
  color: #fbbf24;
}

/* 数据统计 */
.stats {
  padding: 4rem 0;
  background: #f8fafc;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.stat-item {
  text-align: center;
  padding: 2rem;
  background: white;
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.stat-number {
  font-size: 3rem;
  font-weight: bold;
  color: #2563eb;
  margin-bottom: 0.5rem;
}

.stat-label {
  color: #64748b;
  font-weight: 500;
}

/* 产品特色 */
.products {
  padding: 6rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: 2.5rem;
  color: #1e293b;
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.1rem;
  color: #64748b;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.product-card {
  background: white;
  padding: 2.5rem;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  text-align: center;
  transition: transform 0.3s ease;
}

.product-card:hover {
  transform: translateY(-10px);
}

.product-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, #667eea, #764ba2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
}

.product-icon i {
  font-size: 2rem;
  color: white;
}

.product-card h3 {
  font-size: 1.5rem;
  color: #1e293b;
  margin-bottom: 1rem;
}

.product-card p {
  color: #64748b;
  line-height: 1.6;
}

/* 服务优势 */
.services {
  padding: 6rem 0;
  background: #f8fafc;
}

.services-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.service-item {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: white;
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.service-number {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, #10b981, #059669);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.service-content h3 {
  color: #1e293b;
  margin-bottom: 0.5rem;
}

.service-content p {
  color: #64748b;
  line-height: 1.6;
}

.services-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.service-visual {
  width: 300px;
  height: 300px;
  background: linear-gradient(135deg, #10b981, #059669);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.service-visual i {
  font-size: 8rem;
  color: white;
}

/* 解决方案 */
.solutions {
  padding: 6rem 0;
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.solution-card {
  background: white;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.solution-card:hover {
  transform: translateY(-5px);
}

.solution-image {
  height: 200px;
  background: linear-gradient(135deg, #8b5cf6, #a855f7);
  display: flex;
  align-items: center;
  justify-content: center;
}

.solution-image i {
  font-size: 4rem;
  color: white;
}

.solution-card h3 {
  padding: 1.5rem 1.5rem 0.5rem;
  color: #1e293b;
  font-size: 1.3rem;
}

.solution-card p {
  padding: 0 1.5rem 1.5rem;
  color: #64748b;
  line-height: 1.6;
}

/* 联系我们 */
.contact {
  padding: 6rem 0;
  background: #f8fafc;
}

.contact-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 4rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-item {
  display: flex;
  gap: 1.5rem;
  padding: 2rem;
  background: white;
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.contact-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-icon i {
  font-size: 1.5rem;
  color: white;
}

.contact-details h3 {
  color: #1e293b;
  margin-bottom: 0.5rem;
}

.contact-details p {
  color: #64748b;
  margin-bottom: 0.25rem;
}

.qr-codes {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  align-items: center;
}

.qr-item {
  text-align: center;
  padding: 1.5rem;
  background: white;
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.qr-item img {
  width: 150px;
  height: 150px;
  border-radius: 10px;
  margin-bottom: 1rem;
}

.qr-item p {
  color: #64748b;
  font-weight: 500;
}

/* 页脚 */
.footer {
  background: #1e293b;
  color: white;
  padding: 3rem 0 1rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
  margin-bottom: 1rem;
  color: #fbbf24;
}

.footer-section p,
.footer-section li {
  color: #cbd5e1;
  margin-bottom: 0.5rem;
}

.footer-section ul {
  list-style: none;
}

.footer-section a {
  color: #cbd5e1;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-section a:hover {
  color: #fbbf24;
}

.footer-bottom {
  border-top: 1px solid #334155;
  padding-top: 1rem;
  text-align: center;
  color: #94a3b8;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background-color: white;
    width: 100%;
    text-align: center;
    transition: 0.3s;
    box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
    padding: 2rem 0;
  }

  .nav-menu.active {
    left: 0;
  }

  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2rem;
  }

  .hero-content h1 {
    font-size: 2.5rem;
  }

  .hero-features {
    justify-content: center;
    flex-wrap: wrap;
  }

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

  .services-content {
    grid-template-columns: 1fr;
  }

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

  .qr-codes {
    flex-direction: row;
    justify-content: center;
  }

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .service-visual {
    width: 200px;
    height: 200px;
  }

  .service-visual i {
    font-size: 5rem;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 2rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

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

  .qr-codes {
    flex-direction: column;
  }

  .qr-item img {
    width: 120px;
    height: 120px;
  }
}

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

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

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

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: #2563eb;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #1d4ed8;
}






/* 服务特色 */
.services {
  padding: 80px 0;
  background: #f8fafc;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: #1e293b;
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.1rem;
  color: #64748b;
  max-width: 600px;
  margin: 0 auto;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.service-card {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  text-align: center;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.service-icon {
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: center;
}

.service-card h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 1rem;
}

.service-card p {
  color: #64748b;
  line-height: 1.6;
}

/* 产品优势 */
.advantages {
  padding: 80px 0;
  background: white;
}

.advantages-content {
  display: grid;
  gap: 3rem;
}

.advantage-item {
  display: flex;
  align-items: flex-start;
  gap: 2rem;
}

.advantage-number {
  font-size: 3rem;
  font-weight: 700;
  color: #2563eb;
  opacity: 0.3;
  min-width: 80px;
}

.advantage-text h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 0.5rem;
}

.advantage-text p {
  color: #64748b;
  line-height: 1.6;
}

/* 用户评价 */
.testimonials {
  padding: 80px 0;
  background: #f8fafc;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.testimonial-card {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.testimonial-content {
  margin-bottom: 1.5rem;
}

.testimonial-content p {
  font-style: italic;
  color: #64748b;
  line-height: 1.6;
}

.testimonial-author strong {
  color: #1e293b;
  font-weight: 600;
}

.testimonial-author span {
  color: #64748b;
  margin-left: 0.5rem;
}