/* CSS变量定义 */
:root {
  --primary-color: #2A6DFF;
  --secondary-color: #FF6B35;
  --light-gray: #F8F9FA;
  --dark-gray: #333333;
  --medium-gray: #666666;
  --light-blue: #E8F0FF;
  --white: #FFFFFF;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--dark-gray);
  background-color: var(--white);
  scroll-behavior: smooth;
}

/* 容器样式 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 按钮样式 */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border: none;
  border-radius: var(--border-radius);
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  outline: none;
}

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

.btn-primary:hover {
  background-color: #1E5BD8;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background-color: var(--primary-color);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* 脉动动画 */
.btn-pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(42, 109, 255, 0.4);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(42, 109, 255, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(42, 109, 255, 0);
  }
}

/* 导航栏样式 */
.navbar {
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
  padding: 10px 0;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
}

.logo img {
  max-height: 40px;
  transition: var(--transition);
}

.logo img:hover {
  transform: scale(1.05);
}

.nav-menu ul {
  display: flex;
  list-style: none;
  gap: 30px;
}

.nav-menu a {
  text-decoration: none;
  color: var(--dark-gray);
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary-color);
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: var(--transition);
}

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

.nav-cta {
  display: flex;
  align-items: center;
  gap: 20px;
}

.phone {
  display: flex;
  align-items: center;
  gap: 5px;
  font-weight: 600;
  color: var(--primary-color);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
}

.menu-icon {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--dark-gray);
  position: relative;
  transition: var(--transition);
}

.menu-icon::before,
.menu-icon::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 3px;
  background-color: var(--dark-gray);
  transition: var(--transition);
}

.menu-icon::before {
  top: -8px;
}

.menu-icon::after {
  top: 8px;
}

/* 英雄区域样式 */
.hero {
  background-color: var(--light-blue);
  padding: 80px 0;
  overflow: hidden;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: url('../images/hero-bg.svg') no-repeat center center;
  background-size: cover;
  opacity: 0.1;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content h1 {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--dark-gray);
}

.hero-content p {
  font-size: 18px;
  margin-bottom: 30px;
  color: var(--medium-gray);
}

.hero-cta {
  display: flex;
  gap: 20px;
  margin-bottom: 40px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

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

.stat-number {
  display: block;
  font-size: 32px;
  font-weight: 700;
  color: var(--primary-color);
}

.stat-label {
  display: block;
  font-size: 14px;
  color: var(--medium-gray);
}

.hero-image img {
  max-width: 100%;
  height: auto;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

/* 章节标题样式 */
.section-header {
  text-align: center;
  margin-bottom: 50px;
}

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

.section-header p {
  font-size: 18px;
  color: var(--medium-gray);
  max-width: 600px;
  margin: 0 auto;
}

/* 服务展示样式 */
.services {
  padding: 80px 0;
  background-color: var(--white);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

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

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.service-icon {
  width: 80px;
  height: 80px;
  background-color: var(--light-blue);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  transition: var(--transition);
}

.service-card:hover .service-icon {
  transform: scale(1.1);
  background-color: var(--primary-color);
}

.service-icon img {
  max-width: 60%;
  max-height: 60%;
  transition: var(--transition);
}

.service-card:hover .service-icon img {
  filter: brightness(0) invert(1);
}

.service-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--dark-gray);
}

.service-card p {
  color: var(--medium-gray);
  margin-bottom: 20px;
}

.service-link {
  display: inline-block;
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  position: relative;
}

.service-link::after {
  content: '→';
  margin-left: 5px;
  transition: var(--transition);
}

.service-link:hover {
  color: var(--secondary-color);
}

.service-link:hover::after {
  margin-left: 10px;
}

/* 优势说明样式 */
.advantages {
  padding: 80px 0;
  background-color: var(--light-gray);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.advantage-item {
  text-align: center;
  padding: 30px;
  background-color: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

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

.advantage-icon {
  width: 70px;
  height: 70px;
  background-color: var(--light-blue);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.advantage-icon img {
  max-width: 50%;
  max-height: 50%;
}

.advantage-item h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--dark-gray);
}

.advantage-item p {
  color: var(--medium-gray);
  font-size: 14px;
}

/* 用户评价样式 */
.testimonials {
  padding: 80px 0;
  background-color: var(--white);
}

.testimonials-slider {
  display: flex;
  overflow-x: auto;
  gap: 30px;
  padding: 20px 0;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.testimonials-slider::-webkit-scrollbar {
  height: 8px;
}

.testimonials-slider::-webkit-scrollbar-track {
  background: var(--light-gray);
  border-radius: 4px;
}

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

.testimonial-item {
  flex: 0 0 100%;
  max-width: 500px;
  scroll-snap-align: start;
}

.testimonial-content {
  background-color: var(--white);
  padding: 30px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.testimonial-content:hover {
  box-shadow: var(--shadow-md);
}

.rating {
  margin-bottom: 20px;
}

.star {
  color: var(--secondary-color);
  font-size: 20px;
}

.testimonial-content p {
  font-size: 16px;
  color: var(--medium-gray);
  margin-bottom: 20px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 15px;
}

.testimonial-author img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
}

.author-info h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--dark-gray);
}

.author-info p {
  font-size: 14px;
  color: var(--medium-gray);
  margin: 0;
  font-style: normal;
}

/* 预约流程样式 */
.booking-process {
  padding: 80px 0;
  background-color: var(--light-gray);
}

.process-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.step-item {
  text-align: center;
  flex: 1;
  max-width: 300px;
  background-color: var(--white);
  padding: 30px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
}

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

.step-number {
  width: 50px;
  height: 50px;
  background-color: var(--primary-color);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 700;
  margin: 0 auto 20px;
  transition: var(--transition);
}

.step-item:hover .step-number {
  transform: scale(1.1);
  background-color: var(--secondary-color);
}

.step-item h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--dark-gray);
}

.step-item p {
  color: var(--medium-gray);
  font-size: 14px;
}

.step-arrow {
  font-size: 30px;
  color: var(--primary-color);
  font-weight: bold;
  margin: 0 10px;
  display: none;
}

@media (min-width: 768px) {
  .step-arrow {
    display: block;
  }
}

/* 行动号召样式 */
.cta {
  padding: 80px 0;
  background-color: var(--primary-color);
  color: var(--white);
  text-align: center;
}

.cta-content h2 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 20px;
}

.cta-content p {
  font-size: 18px;
  margin-bottom: 30px;
  opacity: 0.9;
}

.cta-content .btn {
  background-color: var(--white);
  color: var(--primary-color);
  font-weight: 600;
}

.cta-content .btn:hover {
  background-color: var(--secondary-color);
  color: var(--white);
  border-color: var(--secondary-color);
}

/* 页脚样式 */
.footer {
  background-color: var(--dark-gray);
  color: var(--white);
  padding: 60px 0 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-logo img {
  max-height: 50px;
  margin-bottom: 20px;
}

.footer-logo p {
  color: #ccc;
  font-size: 14px;
  line-height: 1.5;
}

.footer-links h4 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--white);
}

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

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: #ccc;
  text-decoration: none;
  transition: var(--transition);
  font-size: 14px;
}

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

.footer-contact h4 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--white);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 15px;
  font-size: 14px;
  color: #ccc;
}

.contact-item .icon {
  font-size: 18px;
  color: var(--primary-color);
}

.footer-bottom {
  border-top: 1px solid #444;
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.copyright {
  font-size: 14px;
  color: #ccc;
}

.footer-social {
  display: flex;
  gap: 20px;
}

.social-link {
  color: #ccc;
  text-decoration: none;
  transition: var(--transition);
  font-size: 14px;
}

.social-link:hover {
  color: var(--primary-color);
}

/* 在线客服样式 */
.chat-widget {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 1000;
}

.chat-btn {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: var(--primary-color);
  color: var(--white);
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chat-btn:hover {
  transform: scale(1.1);
  background-color: var(--secondary-color);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.chat-window {
  position: absolute;
  bottom: 80px;
  right: 0;
  width: 350px;
  background-color: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  display: none;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

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

.chat-header {
  background-color: var(--primary-color);
  color: var(--white);
  padding: 15px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.chat-header h3 {
  font-size: 16px;
  font-weight: 600;
}

.close-chat {
  background: none;
  border: none;
  color: var(--white);
  font-size: 20px;
  cursor: pointer;
  padding: 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chat-body {
  padding: 20px;
  max-height: 300px;
  overflow-y: auto;
}

.message {
  margin-bottom: 15px;
  display: flex;
}

.bot-message {
  justify-content: flex-start;
}

.user-message {
  justify-content: flex-end;
}

.message p {
  background-color: var(--light-gray);
  padding: 10px 15px;
  border-radius: 15px;
  max-width: 80%;
  font-size: 14px;
}

.user-message p {
  background-color: var(--primary-color);
  color: var(--white);
}

.chat-footer {
  padding: 15px 20px;
  border-top: 1px solid var(--light-gray);
  display: flex;
  gap: 10px;
}

.chat-footer input {
  flex: 1;
  padding: 10px 15px;
  border: 1px solid var(--light-gray);
  border-radius: 20px;
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}

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

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

.send-btn:hover {
  background-color: var(--secondary-color);
  transform: scale(1.1);
}

/* 滚动动画效果 */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

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

/* 响应式设计 */
@media (max-width: 992px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content h1 {
    font-size: 36px;
  }

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

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

  .nav-menu {
    display: none;
  }

  .mobile-menu-btn {
    display: block;
  }

  .nav-cta {
    display: none;
  }
}

@media (max-width: 768px) {
  .section-header h2 {
    font-size: 28px;
  }

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

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

  .process-steps {
    flex-direction: column;
  }

  .step-arrow {
    transform: rotate(90deg);
  }

  .cta-content h2 {
    font-size: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .chat-window {
    width: 100%;
    max-width: 350px;
  }
}

@media (max-width: 576px) {
  .container {
    padding: 0 15px;
  }

  .hero {
    padding: 60px 0;
  }

  .hero-content h1 {
    font-size: 28px;
  }

  .hero-content p {
    font-size: 16px;
  }

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

  .hero-stats {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .services,
  .advantages,
  .testimonials,
  .booking-process,
  .cta {
    padding: 60px 0;
  }

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

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

  .contact-item {
    justify-content: center;
  }
}

/* 加载动画 */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--light-gray);
  border-radius: 50%;
  border-top-color: var(--primary-color);
  animation: spin 1s ease-in-out infinite;
}

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

/* 骨架屏样式 */
.skeleton {
  background: linear-gradient(90deg, var(--light-gray) 25%, #e0e0e0 50%, var(--light-gray) 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* 平滑滚动 */
html {
  scroll-behavior: smooth;
}

/* 选择文本样式 */
::selection {
  background-color: var(--light-blue);
  color: var(--primary-color);
}

/* 焦点样式 */
:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* 图片懒加载 */
img {
  transition: opacity 0.3s ease;
}

img.lazy {
  opacity: 0;
}

img.lazy.loaded {
  opacity: 1;
}