/* ==================== 全局样式 ==================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

:root {
  --primary-color: #f95b00;
  --primary-dark: #cc4a00;
  --primary-light: #fff0e6;
  --secondary-color: #ff6b35;
  --accent-color: #ffd700;
  --text-dark: #333333;
  --text-gray: #666666;
  --text-light: #999999;
  --bg-white: #ffffff;
  --bg-gray: #f8f9fa;
  --bg-dark: #1a1a1a;
  --border-color: #e0e0e0;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  color: var(--text-dark);
  line-height: 1.6;
  background-color: var(--bg-white);
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 移动端触摸优化 */
button,
input,
select,
textarea {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  border-radius: 0;
}

button:active,
a:active {
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
}

/* 移动端滚动优化 */
* {
  -webkit-overflow-scrolling: touch;
}

/* 移动端选择优化 */
::selection {
  background: var(--primary-color);
  color: var(--bg-white);
}

::-moz-selection {
  background: var(--primary-color);
  color: var(--bg-white);
}

/* ==================== 导航栏 ==================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--bg-white);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
}

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

.logo {
  font-size: 22px;
  font-weight: bold;
  color: var(--primary-color);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-right: 50px;
}

.logo img {
  height: 40px;
  width: auto;
  display: block;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 35px;
  align-items: center;
}

.nav-menu li a {
  text-decoration: none;
  color: var(--text-dark);
  font-size: 15px;
  font-weight: 500;
  transition: color 0.3s;
  position: relative;
}

/* Web 端电话菜单项 - 不可点击、不高亮 */
.nav-phone-text {
  color: var(--primary-color);
  font-weight: 600;
  font-size: 16px;
  cursor: default;
  pointer-events: none;
}

/* 移动端可点击的电话链接 - 默认隐藏 */
.nav-phone-mobile {
  display: none;
  text-decoration: none;
  color: var(--primary-color);
  font-weight: 600;
  font-size: 14px;
}

.nav-phone-mobile .nav-phone-icon {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.nav-phone-mobile .nav-phone-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.nav-phone-mobile .nav-phone-title {
  font-size: 13px;
  color: var(--text-gray);
  line-height: 1.2;
}

.nav-phone-mobile .nav-phone-number {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary-color);
  line-height: 1.2;
}

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

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

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

/* 移动端菜单按钮 */
.menu-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
  padding: 5px;
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: all 0.3s;
}

/* 移动端菜单遮罩 */
.menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 998;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.menu-overlay.active {
  display: block;
  opacity: 1;
}

/* 移动端导航菜单 - 全屏下拉样式 */
.nav-menu.active {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  padding: 120px 20px 30px;
  gap: 0;
  z-index: 999;
  overflow-y: auto;
  animation: slideDown 0.4s ease forwards;
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* 移动端菜单激活时，汉堡按钮变成关闭按钮，并移到上层显示 */
.menu-toggle.active {
  position: fixed;
  top: 12px;
  right: 20px;
  z-index: 1001;
}

.menu-toggle.active span {
  background: var(--bg-white);
}

.nav-menu.active li {
  width: 100%;
}

.nav-menu.active li a {
  display: block;
  padding: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 18px;
  font-weight: 500;
  color: var(--bg-white);
  text-align: center;
  transition: all 0.3s ease;
}

.nav-menu.active li a::after {
  display: none;
}

.nav-menu.active li a:hover,
.nav-menu.active li a.active {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.02);
}

/* ==================== 英雄区域 ==================== */
.hero {
  color: var(--bg-white);
  padding: 0;
  text-align: center;
  margin-top: 60px;
  position: relative;
  overflow: hidden;
  min-height: 400px;
}

.hero-carousel {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.carousel-track {
  position: relative;
  width: 100%;
  height: 100%;
}

.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1s ease-in-out;
}

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

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

.carousel-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6)
}

.carousel-content {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 100px 20px 60px;
  opacity: 0;
  transition: opacity 1s ease-in-out;
  z-index: 2;
}

.carousel-slide.active .carousel-content {
  opacity: 1;
}

.carousel-content h1 {
  font-size: 42px;
  margin-bottom: 15px;
  font-weight: bold;
  color: var(--bg-white);
  text-align: center;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

.carousel-content .subtitle {
  font-size: 20px;
  margin-bottom: 30px;
  opacity: 0.95;
  color: var(--bg-white);
  text-align: center;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

.carousel-content .description {
  font-size: 16px;
  margin-bottom: 30px;
  opacity: 0.9;
  max-width: 600px;
  color: var(--bg-white);
  text-align: center;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

.carousel-dots {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  z-index: 3;
}

.carousel-dot {
  width: 40px;
  height: 4px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: all 0.3s ease;
}

.carousel-dot:hover {
  background: rgba(255, 255, 255, 0.8);
}

.carousel-dot.active {
  background: var(--bg-white);
  width: 60px;
}

.btn-rescue {
  display: inline-block;
  background: var(--secondary-color);
  color: var(--bg-white);
  padding: 14px 45px;
  border-radius: 50px;
  text-decoration: none;
  font-size: 16px;
  font-weight: bold;
  transition: all 0.3s;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

.btn-rescue:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}

/* ==================== 统计数据 ==================== */
.statistics {
  background: var(--bg-gray);
  padding: 70px 20px;
  margin-top: 0;
}

.statistics-container {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.statistics h2 {
  font-size: 32px;
  margin-bottom: 12px;
  color: var(--text-dark);
  font-weight: bold;
}

.statistics .subtitle {
  color: var(--text-gray);
  margin-bottom: 40px;
  font-size: 15px;
}

.statistics-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.stat-item {
  padding: 30px 15px;
  border-radius: 10px;
  transition: all 0.3s;
}

.stat-number {
  font-size: 36px;
  font-weight: bold;
  color: var(--primary-color);
  margin-bottom: 5px;
  line-height: 1;
}

.stat-unit {
  font-size: 18px;
  color: var(--primary-color);
}

.stat-label {
  font-size: 13px;
  color: var(--text-gray);
  margin-top: 12px;
}

/* ==================== 服务列表 ==================== */
.services-section {
  padding: 70px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  font-size: 32px;
  margin-bottom: 12px;
  color: var(--text-dark);
  font-weight: bold;
}

.section-subtitle {
  text-align: center;
  color: var(--text-gray);
  margin-bottom: 45px;
  font-size: 15px;
}

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

.service-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  overflow: hidden;
  text-align: center;
  transition: all 0.3s;
  cursor: pointer;
}

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

.service-card .icon {
  font-size: 52px;
  display: none;
}

.service-card h3 {
  font-size: 18px;
  margin: 15px 0 10px 0;
  color: var(--text-dark);
  font-weight: bold;
}

.service-card p {
  color: var(--text-gray);
  margin-bottom: 15px;
  font-size: 13px;
  padding: 0 15px;
}

.service-card .service-content {
  padding: 15px 0 20px 0;
}

.service-card .service-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.service-card:hover .service-image {
  transform: scale(1.05);
  transition: transform 0.3s;
}

.service-price {
  font-size: 16px;
  font-weight: bold;
  color: var(--primary-color);
  display: block;
  margin-bottom: 15px;
}

.btn-service {
  display: inline-block;
  background: var(--primary-color);
  color: var(--bg-white);
  padding: 10px 30px;
  border-radius: 5px;
  text-decoration: none;
  transition: all 0.3s;
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
}

/* ==================== 优势区域 ==================== */
.advantages {
  background: var(--bg-gray);
  padding: 70px 20px;
}

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

.advantages h2 {
  text-align: center;
  font-size: 32px;
  margin-bottom: 12px;
  color: var(--text-dark);
  font-weight: bold;
}

.advantages .subtitle {
  text-align: center;
  color: var(--text-gray);
  margin-bottom: 45px;
  font-size: 15px;
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
}

.advantage-card {
  padding: 35px 25px;
  border-radius: 10px;
  text-align: center;
  transition: all 0.3s;
}

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

.advantage-card .icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.advantage-card .icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.advantage-card h3 {
  font-size: 18px;
  margin-bottom: 12px;
  /* color: var(--primary-color); */
  font-weight: bold;
}

.advantage-card p {
  color: var(--text-gray);
  font-size: 13px;
  line-height: 1.7;
}

/* ==================== 平台介绍 ==================== */
.intro {
  padding: 70px 20px;
  max-width: 900px;
  margin: 0 auto;
}

.intro h2 {
  text-align: center;
  font-size: 32px;
  margin-bottom: 40px;
  color: var(--text-dark);
  font-weight: bold;
}

.intro p {
  color: var(--text-gray);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 20px;
  text-align: justify;
}

/* ==================== 评价区域 ==================== */
.reviews {
  background: var(--bg-gray);
  padding: 70px 20px;
}

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

.reviews h2 {
  text-align: center;
  font-size: 32px;
  margin-bottom: 12px;
  color: var(--text-dark);
  font-weight: bold;
}

.reviews .subtitle {
  text-align: center;
  color: var(--text-gray);
  margin-bottom: 45px;
  font-size: 15px;
}

.reviews-carousel {
  position: relative;
  overflow: hidden;
  width: 100%;
}

.reviews-track {
  display: flex;
  transition: transform 0.5s ease;
  gap: 20px;
  padding: 0 10px;
}

.review-card {
  background: var(--bg-white);
  padding: 30px 25px;
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  min-width: 280px;
  max-width: 280px;
  flex-shrink: 0;
}

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

.review-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  overflow: hidden;
  margin-bottom: 15px;
  border: 2px solid var(--primary-color);
}

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

.review-name {
  font-weight: bold;
  font-size: 16px;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.review-rating {
  color: var(--accent-color);
  font-size: 14px;
  margin-bottom: 15px;
}

.review-content {
  color: var(--text-gray);
  font-size: 14px;
  line-height: 1.7;
}

.reviews-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 30px;
  margin-bottom: 10px;
}

.review-dot {
  width: 30px;
  height: 3px;
  border-radius: 2px;
  background: #d0d0d0;
  cursor: pointer;
  transition: all 0.3s;
}

.review-dot.active {
  background: var(--primary-color);
  width: 40px;
}

.review-dot:hover {
  background: var(--primary-dark);
}

/* ==================== FAQ区域 ==================== */
.faq {
  padding: 70px 20px;
  max-width: 900px;
  margin: 0 auto;
}

.faq h2 {
  text-align: center;
  font-size: 32px;
  margin-bottom: 12px;
  color: var(--text-dark);
  font-weight: bold;
}

.faq .subtitle {
  text-align: center;
  color: var(--text-gray);
  margin-bottom: 45px;
  font-size: 15px;
}

.faq-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s;
}

.faq-question {
  padding: 20px 25px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: bold;
  font-size: 15px;
  color: var(--text-dark);
  transition: all 0.3s;
}

.faq-answer {
  padding: 0 25px 20px;
  color: var(--text-gray);
  font-size: 14px;
  line-height: 1.8;
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-toggle {
  font-size: 12px;
  transition: transform 0.3s;
  color: var(--primary-color);
}

.faq-item.active .faq-toggle {
  transform: rotate(180deg);
}

.btn-learn-more {
  display: block;
  text-align: center;
  margin-top: 30px;
  color: var(--primary-color);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: color 0.3s;
}

.btn-learn-more:hover {
  color: var(--primary-dark);
}

/* ==================== 流程区域 ==================== */
.process {
  background: var(--bg-gray);
  padding: 70px 20px;
}

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

.process h2 {
  text-align: center;
  font-size: 32px;
  margin-bottom: 12px;
  color: var(--text-dark);
  font-weight: bold;
}

.process .subtitle {
  text-align: center;
  color: var(--text-gray);
  margin-bottom: 45px;
  font-size: 15px;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  position: relative;
}

.step-item {
  text-align: center;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.step-item:not(:last-child)::after {
  content: '>>';
  position: absolute;
  right: -25px;
  top: 30px;
  font-size: 18px;
  color: #d0d0d0;
  z-index: 1;
  pointer-events: none;
  transition: color 0.3s;
}

.step-item:not(:last-child):hover::after {
  color: var(--primary-color);
  animation: pulse-arrow 1s ease-in-out infinite;
}

@keyframes pulse-arrow {
  0% {
    opacity: 0.3;
    transform: translateX(0);
  }
  50% {
    opacity: 1;
    transform: translateX(5px);
  }
  100% {
    opacity: 0.3;
    transform: translateX(0);
  }
}

.step-icon {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
  transition: all 0.3s;
}

.step-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.step-item:hover .step-icon {
  transform: scale(1.1);
}

.step-item h3 {
  font-size: 16px;
  margin-bottom: 10px;
  color: var(--text-dark);
  font-weight: bold;
}

.step-item p {
  color: var(--text-gray);
  font-size: 13px;
  line-height: 1.6;
}

/* ==================== 知识区域 ==================== */
.knowledge {
  padding: 70px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.knowledge h2 {
  text-align: center;
  font-size: 32px;
  margin-bottom: 12px;
  color: var(--text-dark);
  font-weight: bold;
}

.knowledge .subtitle {
  text-align: center;
  color: var(--text-gray);
  margin-bottom: 45px;
  font-size: 15px;
}

.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.knowledge-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 30px;
  transition: all 0.3s;
}

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

.knowledge-card h3 {
  font-size: 16px;
  margin-bottom: 15px;
  color: var(--text-dark);
  font-weight: bold;
  line-height: 1.5;
}

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

.btn-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
  transition: color 0.3s;
}

.btn-link:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

/* ==================== 价格区域 ==================== */
.pricing {
  background: var(--bg-gray);
  padding: 70px 20px;
}

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

.pricing h2 {
  text-align: center;
  font-size: 32px;
  margin-bottom: 12px;
  color: var(--text-dark);
  font-weight: bold;
}

.pricing .subtitle {
  text-align: center;
  color: var(--text-gray);
  margin-bottom: 45px;
  font-size: 15px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}

.pricing-card {
  background: var(--bg-white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.4s ease;
  border: 1px solid transparent;
  display: flex;
  flex-direction: column;
  position: relative;
}

.pricing-card-header {
  padding: 30px 25px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.pricing-card-header h3 {
  font-size: 22px;
  margin-bottom: 8px;
  font-weight: bold;
  color: var(--text-dark);
  position: relative;
  z-index: 1;
}

.pricing-card-header .subtitle {
  color: var(--text-gray);
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
  position: relative;
  z-index: 1;
}

.pricing-card-body {
  padding: 25px;
  flex: 1;
}

.pricing-card-body ul {
  list-style: none;
}

.pricing-card-body li {
  padding: 12px 0;
  color: var(--text-gray);
  font-size: 14px;
  position: relative;
  padding-left: 24px;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
}

.pricing-card-body li::before {
  content: '·';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
  font-size: 16px;
}

.pricing-card-body li:last-child {
  border-bottom: none;
}

.pricing-card-footer {
  padding: 20px 25px;
}

.pricing-card-price {
  font-size: 32px;
  font-weight: bold;
  display: block;
  margin-bottom: 15px;
  text-align: center;
  animation: pricePop 0.6s ease-out;
  transition: all 0.3s ease;
}

@keyframes pricePop {
  0% {
    opacity: 0;
    transform: scale(0.8);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

.pricing-card .btn-service {
  width: 100%;
  display: block;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.pricing-card .btn-service::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.pricing-card .btn-service:active {
  transform: translateY(0);
}

/* 价格卡片交错动画 */
.pricing-card:nth-child(1) {
  animation: slideUp 0.6s ease-out 0.1s forwards;
  opacity: 0;
  transform: translateY(30px);
}

.pricing-card:nth-child(2) {
  animation: slideUp 0.6s ease-out 0.2s forwards;
  opacity: 0;
  transform: translateY(30px);
}

.pricing-card:nth-child(3) {
  animation: slideUp 0.6s ease-out 0.3s forwards;
  opacity: 0;
  transform: translateY(30px);
}

/* 列表项逐个进入动画 */
.pricing-card-body li:nth-child(1) { animation: fadeInUp 0.4s ease-out 0.1s forwards; opacity: 0; }
.pricing-card-body li:nth-child(2) { animation: fadeInUp 0.4s ease-out 0.15s forwards; opacity: 0; }
.pricing-card-body li:nth-child(3) { animation: fadeInUp 0.4s ease-out 0.2s forwards; opacity: 0; }
.pricing-card-body li:nth-child(4) { animation: fadeInUp 0.4s ease-out 0.25s forwards; opacity: 0; }
.pricing-card-body li:nth-child(5) { animation: fadeInUp 0.4s ease-out 0.3s forwards; opacity: 0; }
.pricing-card-body li:nth-child(6) { animation: fadeInUp 0.4s ease-out 0.35s forwards; opacity: 0; }
.pricing-card-body li:nth-child(7) { animation: fadeInUp 0.4s ease-out 0.4s forwards; opacity: 0; }
.pricing-card-body li:nth-child(8) { animation: fadeInUp 0.4s ease-out 0.45s forwards; opacity: 0; }
.pricing-card-body li:nth-child(9) { animation: fadeInUp 0.4s ease-out 0.5s forwards; opacity: 0; }

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==================== 城市区域 ==================== */
.cities {
  padding: 50px 20px;
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.cities .cities-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 30px;
}

.cities .city-tag {
  background: var(--bg-gray);
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 14px;
  color: var(--text-gray);
  border: 1px solid var(--border-color);
  transition: all 0.3s;
}

.cities .city-tag:hover {
  background: var(--primary-light);
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.cities .action-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  align-items: center;
}

/* ==================== 页面头部 ==================== */
.page-header {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: var(--bg-white);
  padding: 80px 20px;
  text-align: center;
  margin-top: 50px;
}

.page-header h1 {
  font-size: 36px;
  margin-bottom: 15px;
  font-weight: bold;
}

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

/* ==================== 品牌介绍 ==================== */
.intro-section {
  padding: 70px 20px;
  max-width: 900px;
  margin: 0 auto;
}

/* 面包屑导航 */
.breadcrumb {
  background: var(--bg-gray);
  padding: 15px 0;
  border-bottom: 1px solid var(--border-color);
  margin-top: 60px;
}

.breadcrumb-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
}

.breadcrumb-link {
  color: var(--text-gray);
  text-decoration: none;
  transition: color 0.3s;
}

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

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

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

/* 关于品牌页面背景 */
body[data-page="about"] {
  background: #f5f5f5;
}

/* 关于品牌内容 */
.about-intro {
  padding: 60px 20px;
  max-width: 900px;
  margin: 0 auto;
}

.about-intro-container {
  text-align: center;
  background: var(--bg-white);
  padding: 60px 40px;
  box-shadow: var(--shadow-sm);
}

.about-title {
  font-size: 36px;
  color: var(--text-dark);
  margin-bottom: 40px;
  font-weight: bold;
}

.about-content p {
  color: var(--text-gray);
  font-size: 16px;
  line-height: 2;
  margin-bottom: 25px;
  text-align: left;
}

.about-cta {
  background: var(--primary-light);
  border-left: 4px solid var(--primary-color);
  padding: 20px 25px;
  margin-top: 40px;
  border-radius: 4px;
}

.about-cta p {
  color: var(--text-dark);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 0;
  text-align: left;
}

/* 品牌理念包装器 */
.brand-values-wrapper {
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid var(--border-color);
}

.brand-values-wrapper .section-title {
  font-size: 22px;
  color: var(--text-dark);
  margin-bottom: 15px;
  margin-top: 40px;
  font-weight: bold;
}

.brand-values-wrapper .section-title:first-child {
  margin-top: 0;
}

.brand-values-wrapper .section-content {
  color: var(--text-gray);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 40px;
  padding-left: 20px;
  /* border-left: 3px solid var(--primary-color); */
}

/* 兼容旧的 intro-section 样式 */
.intro-section {
  padding: 70px 20px;
  max-width: 900px;
  margin: 0 auto;
}

.intro-container h2 {
  text-align: center;
  font-size: 32px;
  margin-bottom: 40px;
  color: var(--text-dark);
  font-weight: bold;
}

.intro-content p {
  color: var(--text-gray);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 20px;
  text-align: justify;
  text-indent: 2em;
}

/* ==================== 服务理念 ==================== */
.philosophy {
  padding: 70px 20px;
  background: var(--bg-gray);
}

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

.philosophy-container h2 {
  text-align: center;
  font-size: 32px;
  margin-bottom: 50px;
  color: var(--text-dark);
  font-weight: bold;
}

.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
}

.philosophy-card {
  background: var(--bg-white);
  padding: 35px 25px;
  border-radius: 10px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s;
}

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

.philosophy-card .icon {
  font-size: 48px;
  margin-bottom: 18px;
}

.philosophy-card h3 {
  font-size: 18px;
  margin-bottom: 12px;
  color: var(--primary-color);
  font-weight: bold;
}

.philosophy-card p {
  color: var(--text-gray);
  font-size: 13px;
  line-height: 1.7;
}

/* ==================== FAQ列表样式 ==================== */
.faq-section {
  padding: 70px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.faq-container h2 {
  text-align: center;
  font-size: 32px;
  margin-bottom: 12px;
  color: var(--text-dark);
  font-weight: bold;
}

.faq-container .section-subtitle {
  text-align: center;
  color: var(--text-gray);
  margin-bottom: 45px;
  font-size: 15px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* FAQ 网格布局样式（仿照 chuanyuezhe.cn） */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 25px 30px;
  margin-bottom: 40px;
}

.faq-item {
  cursor: pointer;
}

.faq-grid-item {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s;
  position: relative;
}

.faq-grid-q {
  padding: 20px 25px 15px;
  padding-left: 63px;
  font-weight: bold;
  font-size: 16px;
  line-height: 1.6;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  transition: color 0.3s;
}

.faq-grid-q::before {
  content: 'Q';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--primary-color);
  color: var(--bg-white);
  border-radius: 6px;
  font-size: 14px;
  font-weight: bold;
  flex-shrink: 0;
  position: absolute;
  top: 20px;
  left: 20px;
}

.faq-grid-q:hover {
  color: var(--primary-color);
  cursor: pointer;
}

.faq-grid-a {
  padding: 0 25px 20px;
  padding-left: 63px;
  color: var(--text-gray);
  font-size: 14px;
  line-height: 1.8;
}

.faq-grid-a::before {
  content: 'A';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--border-color);
  color: var(--bg-white);
  border-radius: 6px;
  font-size: 14px;
  font-weight: bold;
  margin-right: 8px;
  position: absolute;
  top: 60px;
  left: 20px;
}

/* 分页样式 */
.faq-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 40px;
  padding-top: 30px;
  border-top: 1px solid var(--border-color);
}

.pagination-item {
  min-width: 38px;
  height: 38px;
  padding: 0 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  color: var(--text-dark);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.3s;
  text-decoration: none;
}

.pagination-item:hover {
  background: var(--primary-light);
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.pagination-item.active {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: var(--bg-white);
}

.pagination-item.disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.pagination-item.disabled:hover {
  background: var(--bg-white);
  border-color: var(--border-color);
  color: var(--text-dark);
}

/* ==================== 知识分类 ==================== */
.knowledge-categories {
  padding: 40px 20px;
  background: var(--bg-gray);
  border-bottom: 1px solid var(--border-color);
}

.categories-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.category-item {
  background: var(--bg-white);
  padding: 12px 25px;
  border-radius: 25px;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: all 0.3s;
  border: 1px solid var(--border-color);
}

.category-item:hover,
.category-item.active {
  background: var(--primary-color);
  color: var(--bg-white);
  border-color: var(--primary-color);
}

.category-item .icon {
  font-size: 18px;
}

/* ==================== 知识区域 ==================== */
.knowledge-section {
  padding: 70px 20px;
}

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

/* ==================== 更多知识 ==================== */
.more-knowledge {
  padding: 70px 20px;
  background: var(--bg-gray);
}

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

.more-container h2 {
  text-align: center;
  font-size: 32px;
  margin-bottom: 50px;
  color: var(--text-dark);
  font-weight: bold;
}

.knowledge-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.knowledge-list-item {
  background: var(--bg-white);
  padding: 30px;
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s;
}

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

.knowledge-list-item h3 {
  font-size: 18px;
  margin-bottom: 15px;
  color: var(--text-dark);
  font-weight: bold;
}

.knowledge-list-item p {
  color: var(--text-gray);
  margin-bottom: 15px;
  font-size: 14px;
  line-height: 1.7;
}

/* ==================== 城市搜索 ==================== */
.city-search {
  padding: 40px 20px;
  background: var(--bg-gray);
  border-bottom: 1px solid var(--border-color);
}

.search-container {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  gap: 10px;
}

.search-input {
  flex: 1;
  padding: 12px 20px;
  border: 1px solid var(--border-color);
  border-radius: 5px;
  font-size: 15px;
  transition: border-color 0.3s;
}

.search-input:focus {
  outline: none;
  border-color: var(--primary-color);
}

.search-btn {
  background: var(--primary-color);
  color: var(--bg-white);
  padding: 12px 30px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 500;
  transition: background 0.3s;
}

.search-btn:hover {
  background: var(--primary-dark);
}

/* ==================== 热门城市 ==================== */
.hot-cities {
  padding: 70px 20px;
}

.hot-cities-container {
  max-width: 1200px;
  margin: 0 auto;
}

.cities-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 15px;
  margin-top: 40px;
}

.city-card {
  background: var(--bg-white);
  padding: 20px;
  border-radius: 8px;
  text-align: center;
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.city-card:hover {
  background: var(--primary-light);
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

.city-card .icon {
  font-size: 20px;
}

/* ==================== 全部城市 ==================== */
.all-cities {
  padding: 70px 20px;
  background: var(--bg-gray);
}

.all-cities-container {
  max-width: 1200px;
  margin: 0 auto;
}

.all-cities-container h2 {
  text-align: center;
  font-size: 32px;
  margin-bottom: 12px;
  color: var(--text-dark);
  font-weight: bold;
}

.all-cities-container .section-subtitle {
  text-align: center;
  color: var(--text-gray);
  margin-bottom: 45px;
  font-size: 15px;
}

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

.city-group h3 {
  font-size: 20px;
  margin-bottom: 20px;
  color: var(--primary-color);
  font-weight: bold;
}

.city-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.city-tag {
  background: var(--bg-white);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 14px;
  color: var(--text-gray);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.3s;
}

.city-tag:hover {
  background: var(--primary-light);
  color: var(--primary-color);
  border-color: var(--primary-color);
}

/* ==================== 城市统计 ==================== */
.city-statistics {
  padding: 70px 20px;
}

.city-stats-container {
  max-width: 1200px;
  margin: 0 auto;
}

.city-stats-container h2 {
  text-align: center;
  font-size: 32px;
  margin-bottom: 50px;
  color: var(--text-dark);
  font-weight: bold;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
}

.stat-card {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--bg-white);
  padding: 40px 30px;
  border-radius: 10px;
  text-align: center;
  box-shadow: var(--shadow-md);
}

.stat-card .number {
  font-size: 42px;
  font-weight: bold;
  margin-bottom: 10px;
}

.stat-card .label {
  font-size: 15px;
  opacity: 0.9;
}

/* ==================== 救援CTA ==================== */
.rescue-cta {
  padding: 70px 20px;
  background: var(--bg-gray);
}

.cta-container {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 30px;
}

/* ==================== 联系信息 ==================== */
.contact-info {
  padding: 70px 20px;
}

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

.contact-container h2 {
  text-align: center;
  font-size: 32px;
  margin-bottom: 12px;
  color: var(--text-dark);
  font-weight: bold;
}

.contact-container .section-subtitle {
  text-align: center;
  color: var(--text-gray);
  margin-bottom: 45px;
  font-size: 15px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.contact-item {
  background: var(--bg-white);
  padding: 30px;
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  display: flex;
  gap: 20px;
  transition: all 0.3s;
  height: 200px;
}

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

.contact-left {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 15px;
  flex: 1;
  text-align: left;
}

.contact-icon {
  flex-shrink: 0;
}

.contact-icon img {
  width: 50px;
  height: 50px;
  object-fit: contain;
}

.contact-text {
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-align: left;
}

.contact-text h3 {
  font-size: 18px;
  margin-bottom: 0;
  color: var(--text-dark);
  font-weight: bold;
}

.contact-desc {
  display: flex;
  align-items: center;
  gap: 10px;
}

.contact-desc p {
  color: var(--text-gray);
  font-size: 14px;
  line-height: 1.6;
  margin: 0;
  flex: 1;
}

.copy-btn {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.3s;
  white-space: nowrap;
}

.copy-btn:hover {
  opacity: 0.8;
}

.copy-btn.copied {
  background: #52c41a;
}

.contact-right {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-right img {
  width: 120px;
  height: 120px;
  object-fit: contain;
}

/* ==================== 留言表单 ==================== */
.contact-form-section {
  padding: 70px 20px;
  background: var(--bg-gray);
}

.form-container {
  max-width: 700px;
  margin: 0 auto;
}

.form-container h2 {
  text-align: center;
  font-size: 32px;
  margin-bottom: 12px;
  color: var(--text-dark);
  font-weight: bold;
}

.form-container .section-subtitle {
  text-align: center;
  color: var(--text-gray);
  margin-bottom: 45px;
  font-size: 15px;
}

.contact-form {
  background: var(--bg-white);
  padding: 40px;
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: 25px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text-dark);
  font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--border-color);
  border-radius: 5px;
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

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

/* ==================== 服务时间 ==================== */
.service-time {
  padding: 70px 20px;
}

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

.time-container h2 {
  text-align: center;
  font-size: 32px;
  margin-bottom: 50px;
  color: var(--text-dark);
  font-weight: bold;
}

.time-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
}

.time-card {
  background: var(--bg-white);
  padding: 35px 25px;
  border-radius: 10px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s;
}

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

.time-card .icon {
  font-size: 48px;
  margin-bottom: 18px;
}

.time-card h3 {
  font-size: 18px;
  margin-bottom: 12px;
  color: var(--primary-color);
  font-weight: bold;
}

.time-card p {
  color: var(--text-gray);
  font-size: 13px;
}

/* ==================== 救援入驻 ==================== */
.join-section {
  padding: 70px 20px;
  background: var(--bg-gray);
}

.join-container {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.join-container h2 {
  font-size: 32px;
  margin-bottom: 12px;
  color: var(--text-dark);
  font-weight: bold;
}

.join-container .section-subtitle {
  color: var(--text-gray);
  margin-bottom: 45px;
  font-size: 15px;
}

.join-content {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 25px;
  margin-bottom: 40px;
}

.join-item {
  background: var(--bg-white);
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s;
}

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

.join-item .icon {
  font-size: 48px;
  margin-bottom: 18px;
}

.join-item h3 {
  font-size: 18px;
  margin-bottom: 12px;
  color: var(--text-dark);
  font-weight: bold;
}

.join-item p {
  color: var(--text-gray);
  font-size: 13px;
  line-height: 1.7;
}

/* ==================== 联系CTA ==================== */
.contact-cta {
  padding: 70px 20px;
  background: var(--bg-gray);
}

.cta-container {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.contact-box {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  margin: 40px 0;
}

.contact-item {
  background: var(--bg-white);
  padding: 30px;
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
}

.contact-item .icon {
  font-size: 48px;
  margin-bottom: 15px;
}

.contact-item h3 {
  font-size: 18px;
  margin-bottom: 10px;
  color: var(--text-dark);
  font-weight: bold;
}

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

/* ==================== 底部 ==================== */
.footer {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  color: var(--bg-white);
  padding: 40px 20px 25px;
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  line-height: 1.8;
  padding: 0 20px;
}

.footer-bottom p {
  margin: 8px 0;
}

.footer-bottom span {
  margin: 0 12px;
  color: rgba(255, 255, 255, 0.3);
}

/* ==================== 响应式设计 ==================== */

/* 平板设备 (768px - 1024px) */
@media (max-width: 1024px) {
  .statistics-grid,
  .services-grid,
  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .process-steps {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .knowledge-grid,
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-card-header {
    padding: 25px 20px;
  }

  .pricing-card-header h3 {
    font-size: 20px;
  }

  .pricing-card-price {
    font-size: 30px;
  }
}

/* 手机设备 (小于768px) */
@media (max-width: 768px) {
  /* 导航栏 */
  .navbar-container {
    justify-content: space-between;
    position: relative;
  }

  .menu-toggle {
    display: flex;
  }

  /* 移动端显示可点击的电话链接，居中显示 */
  .nav-phone-mobile {
    display: flex;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    align-items: center;
    gap: 8px;
  }

  /* Web 端电话菜单项在移动端隐藏 */
  .nav-phone-text {
    display: none;
  }

  .nav-menu {
    display: none;
  }

  .nav-menu.active {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    padding: 120px 20px 30px;
    gap: 0;
    z-index: 999;
    overflow-y: auto;
  }

  .nav-menu.active li {
    width: 100%;
  }

  .nav-menu.active li a {
    display: block;
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 18px;
    font-weight: 500;
    color: var(--bg-white);
    text-align: center;
    transition: all 0.3s ease;
  }

  .nav-menu.active li a::after {
    display: none;
  }

  .nav-menu.active li a:hover,
  .nav-menu.active li a.active {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.02);
  }

  .menu-toggle.active {
    position: fixed;
    top: 12px;
    right: 20px;
    z-index: 1001;
  }

  .menu-toggle.active span {
    background: var(--bg-white);
  }

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

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

  .menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }

  .menu-overlay.active {
    display: block;
    opacity: 1;
  }
  
  /* 英雄区域 */
  .hero {
    padding: 0;
    margin-top: 50px;
    min-height: 400px;
  }

  .carousel-content h1 {
    font-size: 26px;
    margin-bottom: 12px;
  }

  .carousel-content .subtitle {
    font-size: 16px;
    margin-bottom: 20px;
  }

  .carousel-content .description {
    font-size: 14px;
    margin-bottom: 25px;
  }

  .carousel-dots {
    bottom: 20px;
    gap: 8px;
  }

  .carousel-dot {
    width: 30px;
    height: 3px;
  }

  .carousel-dot.active {
    width: 45px;
  }

  .btn-rescue {
    padding: 12px 30px;
    font-size: 14px;
  }
  
  /* 统计数据 */
  .statistics {
    padding: 40px 15px;
  }
  
  .statistics h2 {
    font-size: 24px;
  }
  
  .statistics-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }
  
  .stat-item {
    padding: 20px 10px;
  }
  
  .stat-number {
    font-size: 24px;
  }
  
  .stat-unit {
    font-size: 14px;
  }
  
  .stat-label {
    font-size: 11px;
  }
  
  /* 服务列表 */
  .services-section {
    padding: 40px 15px;
  }
  
  .section-title {
    font-size: 24px;
  }
  
  .section-subtitle {
    font-size: 14px;
    margin-bottom: 30px;
  }
  
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .service-card .service-image {
      height: 140px;
  }
  
  .service-card .icon {
    font-size: 36px;
  }
  
  .service-card h3 {
    font-size: 14px;
  }
  
  .service-card p {
    font-size: 12px;
  }
  
  .service-price {
    font-size: 14px;
  }
  
  .btn-service {
    padding: 8px 20px;
    font-size: 12px;
  }
  
  /* 优势区域 */
  .advantages {
    padding: 40px 15px;
  }
  
  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  
  .advantage-card {
    padding: 20px 15px;
  }

  .advantage-card .icon {
    width: 60px;
    height: 60px;
  }

  .advantage-card h3 {
    font-size: 14px;
  }
  
  .advantage-card p {
    font-size: 12px;
  }
  
  /* 平台介绍 */
  .intro {
    padding: 40px 15px;
  }
  
  .intro h2 {
    font-size: 24px;
    margin-bottom: 25px;
  }
  
  .intro p {
    font-size: 14px;
    text-indent: 0;
  }
  
  /* 评价区域 */
  .reviews {
    padding: 40px 15px;
  }

  .reviews-track {
    gap: 12px;
  }

  .review-card {
    min-width: 160px;
    max-width: 160px;
    padding: 20px 15px;
  }

  .review-avatar {
    width: 50px;
    height: 50px;
  }

  .review-name {
    font-size: 14px;
  }

  .review-rating {
    font-size: 12px;
    margin-bottom: 12px;
  }

  .review-content {
    font-size: 12px;
  }

  .reviews-track {
    gap: 12px;
  }

  .review-card {
    min-width: 160px;
    max-width: 160px;
    padding: 20px 15px;
  }

  .review-avatar {
    width: 50px;
    height: 50px;
  }

  .review-name {
    font-size: 14px;
  }

  .review-rating {
    font-size: 12px;
    margin-bottom: 12px;
  }

  .review-content {
    font-size: 12px;
  }

  /* FAQ区域 */
  .faq {
    padding: 40px 15px;
  }

  .faq-section {
    padding: 40px 15px;
  }

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

  .faq-grid-q {
    padding: 15px 18px 12px;
    font-size: 15px;
    padding-left: 52px;
  }

  .faq-grid-q::before {
    width: 24px;
    height: 24px;
    font-size: 12px;
  }

  .faq-grid-a {
    padding: 0 18px 15px;
    padding-left: 52px;
    font-size: 13px;
  }

  .faq-grid-a::before {
    width: 24px;
    height: 24px;
    font-size: 12px;
  }

  .faq-pagination {
    gap: 5px;
    margin-top: 30px;
  }

  .pagination-item {
    min-width: 34px;
    height: 34px;
    padding: 0 10px;
    font-size: 13px;
  }

  .faq-question {
    padding: 15px 20px;
    font-size: 14px;
  }

  .faq-answer {
    padding: 0 20px 15px;
    font-size: 13px;
  }
  
  /* 流程区域 */
  .process {
    padding: 40px 15px;
  }
  
  .process-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
  }
  
  .step-icon {
    width: 55px;
    height: 55px;
    font-size: 24px;
  }
  
  .step-item h3 {
    font-size: 14px;
  }
  
  .step-item p {
    font-size: 12px;
  }
  
  /* 知识区域 */
  .knowledge {
    padding: 40px 15px;
  }
  
  .knowledge-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }
  
  .knowledge-card {
    padding: 20px;
  }
  
  .knowledge-card h3 {
    font-size: 14px;
  }
  
  .knowledge-card p {
    font-size: 13px;
  }
  
  /* 价格区域 */
  .pricing {
    padding: 40px 15px;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .pricing-card-header {
    padding: 20px 18px;
  }

  .pricing-card-header h3 {
    font-size: 20px;
  }

  .pricing-card-header .subtitle {
    font-size: 13px;
  }

  .pricing-card-price {
    font-size: 28px;
  }

  .pricing-card-body {
    padding: 18px;
  }

  .pricing-card-body li {
    font-size: 13px;
    padding: 10px 0;
  }
  
  /* 城市区域 */
  .cities {
    padding: 30px 15px;
  }
  
  .cities .cities-list {
    gap: 8px;
  }
  
  .cities .city-tag {
    padding: 6px 12px;
    font-size: 12px;
  }
  
  .cities .action-buttons {
    flex-direction: column;
    gap: 15px;
  }
  
  /* 页面头部 */
  .page-header {
    padding: 80px 15px 40px;
    margin-top: 50px;
  }
  
  .page-header h1 {
    font-size: 24px;
  }
  
  .page-header .subtitle {
    font-size: 14px;
  }
  
  /* 品牌介绍页面 */
  .intro-section {
    padding: 40px 15px;
  }

  /* 关于品牌页面 */
  .about-intro {
    padding: 40px 15px;
  }

  .about-intro-container {
    padding: 40px 20px;
  }

  .about-title {
    font-size: 28px;
    margin-bottom: 30px;
  }

  .about-content p {
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 20px;
  }

  .about-cta {
    padding: 15px 20px;
    margin-top: 30px;
  }

  .about-cta p {
    font-size: 14px;
  }

  .brand-values {
    padding: 50px 15px;
  }

  .brand-values-container .section-title {
    font-size: 18px;
    margin-bottom: 12px;
    margin-top: 30px;
  }

  .brand-values-container .section-content {
    font-size: 14px;
    line-height: 1.7;
    padding-left: 15px;
  }

  .breadcrumb-container {
    font-size: 13px;
    padding: 0 15px;
  }
  
  /* 服务理念 */
  .philosophy {
    padding: 40px 15px;
  }
  
  .philosophy-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  
  .philosophy-card {
    padding: 20px 15px;
  }
  
  /* 知识分类 */
  .knowledge-categories {
    padding: 20px 15px;
  }
  
  .categories-container {
    gap: 10px;
  }
  
  .category-item {
    padding: 8px 15px;
    font-size: 13px;
  }
  
  /* 更多知识 */
  .more-knowledge {
    padding: 40px 15px;
  }
  
  .more-container h2 {
    font-size: 24px;
  }
  
  .knowledge-list-item {
    padding: 20px;
  }
  
  /* 城市搜索 */
  .city-search {
    padding: 20px 15px;
  }
  
  .search-container {
    flex-direction: column;
  }
  
  .search-input {
    margin-bottom: 10px;
  }
  
  /* 热门城市 */
  .hot-cities {
    padding: 40px 15px;
  }
  
  .cities-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  
  .city-card {
    padding: 15px;
    font-size: 13px;
  }
  
  /* 全部城市 */
  .all-cities {
    padding: 40px 15px;
  }
  
  .city-lists {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .city-group h3 {
    font-size: 18px;
  }
  
  /* 城市统计 */
  .city-statistics {
    padding: 40px 15px;
  }
  
  .city-stats-container h2 {
    font-size: 24px;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }
  
  .stat-card {
    padding: 30px 20px;
  }
  
  .stat-card .number {
    font-size: 32px;
  }
  
  .stat-card .label {
    font-size: 13px;
  }
  
  /* 救援CTA */
  .rescue-cta {
    padding: 40px 15px;
  }
  
  .cta-buttons {
    flex-direction: column;
    gap: 15px;
  }
  
  /* 联系信息 */
  .contact-info {
    padding: 40px 15px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .contact-item {
    flex-direction: column;
    height: auto;
    padding: 25px;
  }

  .contact-left {
    flex-direction: row;
    align-items: center;
    gap: 20px;
  }

  .contact-right img {
    width: 150px;
    height: 150px;
  }
    gap: 20px;
  }
  
  .contact-card {
    padding: 30px 20px;
  }
  
  .contact-card .icon {
    font-size: 40px;
  }
  
  .contact-card h3 {
    font-size: 18px;
  }
  
  .contact-card .phone {
    font-size: 20px;
  }
  
  /* 留言表单 */
  .contact-form-section {
    padding: 40px 15px;
  }
  
  .form-container h2 {
    font-size: 24px;
  }
  
  .contact-form {
    padding: 25px 20px;
  }
  
  /* 服务时间 */
  .service-time {
    padding: 40px 15px;
  }
  
  .time-container h2 {
    font-size: 24px;
  }
  
  .time-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }
  
  .time-card {
    padding: 25px 20px;
  }
  
  .time-card .icon {
    font-size: 40px;
  }
  
  /* 救援入驻 */
  .join-section {
    padding: 40px 15px;
  }
  
  .join-container h2 {
    font-size: 24px;
  }
  
  .join-content {
    grid-template-columns: 1fr;
    gap: 15px;
  }
  
  .join-item {
    padding: 25px 20px;
  }
  
  /* 联系CTA */
  .contact-cta {
    padding: 40px 15px;
  }
  
  .contact-box {
    grid-template-columns: 1fr;
    gap: 15px;
  }
  
  /* 底部 */
  .footer {
    padding: 35px 15px 20px;
  }

  .footer-bottom {
    font-size: 13px;
  }
}

/* 小屏手机 (小于480px) */
@media (max-width: 480px) {
  /* 导航栏 */
  .logo img {
    height: 32px;
  }
  
  .nav-menu.active {
    width: 80%;
    max-width: 280px;
  }
  
  /* 英雄区域 */
  .carousel-content h1 {
    font-size: 22px;
  }

  .carousel-content .subtitle {
    font-size: 14px;
  }

  .carousel-content .description {
    font-size: 13px;
  }

  /* 特色服务卡片 */
  .hero-feature-card .icon {
    font-size: 36px;
  }
  
  .hero-feature-card h3 {
    font-size: 16px;
  }
  
  /* 统计数据 */
  .statistics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .stat-number {
    font-size: 20px;
  }
  
  .stat-label {
    font-size: 10px;
  }
  
  /* 服务列表 */
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .service-card {
    padding: 25px 20px;
  }
  
  .service-card .icon {
    font-size: 42px;
  }
  
  .service-card h3 {
    font-size: 16px;
  }
  
  /* 优势区域 */
  .advantages-grid {
    grid-template-columns: 1fr;
  }

  .advantage-card {
    padding: 25px 20px;
  }

  .advantage-card .icon {
    width: 70px;
    height: 70px;
  }
  
  .advantage-card h3 {
    font-size: 16px;
  }
  
  /* 流程步骤 */
  .process-steps {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .step-icon {
    width: 60px;
    height: 60px;
    font-size: 28px;
  }

  .step-item:not(:last-child)::after {
    content: '>>';
    right: 50%;
    transform: translateX(50%);
    top: 30px;
    font-size: 16px;
  }
  
  .step-item h3 {
    font-size: 16px;
  }
  
  /* 服务理念 */
  .philosophy-grid {
    grid-template-columns: 1fr;
  }
  
  /* 知识分类 */
  .category-item {
    padding: 6px 12px;
    font-size: 12px;
  }
  
  /* 热门城市 */
  .cities-grid {
    grid-template-columns: 1fr;
  }
  
  /* 城市统计 */
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  /* 服务时间 */
  .time-grid {
    grid-template-columns: 1fr;
  }
  
  /* 按钮 */
  .btn-rescue,
  .btn-service {
    width: 100%;
    text-align: center;
  }
  
  .cities .action-buttons,
  .cta-buttons {
    width: 100%;
  }
  
  .cities .action-buttons button,
  .cta-buttons button,
  .cta-buttons a {
    width: 100%;
  }
}

/* 超小屏手机 (小于375px) */
@media (max-width: 375px) {
  body {
    font-size: 13px;
  }
  
  .section-title {
    font-size: 20px;
  }
  
  .carousel-content h1 {
    font-size: 20px;
  }

  .stat-number {
    font-size: 18px;
  }

  .service-card .icon {
    font-size: 36px;
  }

  .advantage-card .icon {
    width: 60px;
    height: 60px;
  }
  
  .btn-rescue {
    padding: 10px 25px;
    font-size: 13px;
  }
}

/* 横屏手机优化 */
@media (max-width: 768px) and (orientation: landscape) {
  .hero {
    padding: 70px 15px 30px;
  }

  .statistics-grid {
    grid-template-columns: repeat(5, 1fr);
  }

  .stat-item {
    padding: 15px 8px;
  }

  .process-steps {
    grid-template-columns: repeat(5, 1fr);
  }

  .step-icon {
    width: 50px;
    height: 50px;
    font-size: 22px;
  }
}

/* ==================== 动画效果 ==================== */

/* 页面加载淡入动画 */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* 从下方滑入动画 */
@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 从左方滑入动画 */
@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* 从右方滑入动画 */
@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* 缩放淡入动画 */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* 弹跳动画 */
@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* 脉冲动画 */
@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

/* 旋转动画 */
@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* 闪烁动画 */
@keyframes flash {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* 摇摆动画 */
@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-5px);
  }
  75% {
    transform: translateX(5px);
  }
}

/* ==================== 页面加载动画类 ==================== */
.fade-in {
  animation: fadeIn 0.6s ease-out forwards;
}

.slide-up {
  animation: slideUp 0.6s ease-out forwards;
}

.slide-in-left {
  animation: slideInLeft 0.6s ease-out forwards;
}

.slide-in-right {
  animation: slideInRight 0.6s ease-out forwards;
}

.scale-in {
  animation: scaleIn 0.5s ease-out forwards;
}

/* ==================== 滚动动画类 ==================== */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 延迟动画 */
.animate-delay-1 {
  animation-delay: 0.1s;
}

.animate-delay-2 {
  animation-delay: 0.2s;
}

.animate-delay-3 {
  animation-delay: 0.3s;
}

.animate-delay-4 {
  animation-delay: 0.4s;
}

.animate-delay-5 {
  animation-delay: 0.5s;
}

/* ==================== 悬停动画效果 ==================== */

/* 悬停时轻微上浮 */
.hover-lift {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

/* 悬停时缩放 */
.hover-scale {
  transition: transform 0.3s ease;
}

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

/* 悬停时轻微旋转 */
.hover-rotate {
  transition: transform 0.4s ease;
}

.hover-rotate:hover {
  transform: rotate(5deg);
}

/* 悬停时脉冲效果 */
.hover-pulse:hover {
  animation: pulse 0.6s ease-in-out;
}

/* 悬停时弹跳效果 */
.hover-bounce:hover {
  animation: bounce 0.6s ease-in-out;
}

/* ==================== 按钮动画 ==================== */
.btn-rescue,
.btn-service {
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.btn-rescue:active,
.btn-service:active {
  transform: scale(0.95);
}

/* 按钮波纹效果 */
.btn-ripple {
  position: relative;
  overflow: hidden;
}

.btn-ripple::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn-ripple:hover::after {
  width: 300px;
  height: 300px;
}

/* ==================== 导航动画 ==================== */

/* 导航链接下划线动画 */
.nav-menu li a::after {
  transition: width 0.3s ease;
}

/* 导航菜单滑入动画 */
.nav-menu.active {
  animation: slideInRight 0.3s ease-out;
}

/* 汉堡菜单动画 */
.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* ==================== 卡片动画 ==================== */

/* 卡片悬停效果 */
.service-card,
.advantage-card,
.review-card,
.knowledge-card,
.pricing-card,
.city-card,
.contact-card,
.stat-card,
.philosophy-card,
.time-card,
.join-item {
  position: relative;
  overflow: hidden;
}

.service-card::before,
.advantage-card::before,
.review-card::before,
.knowledge-card::before,
.pricing-card::before,
.city-card::before,
.contact-card::before,
.stat-card::before,
.philosophy-card::before,
.time-card::before,
.join-item::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;
}

.service-card:hover::before,
.advantage-card:hover::before,
.review-card:hover::before,
.knowledge-card:hover::before,
.pricing-card:hover::before,
.city-card:hover::before,
.contact-card:hover::before,
.stat-card:hover::before,
.philosophy-card:hover::before,
.time-card:hover::before,
.join-item:hover::before {
  left: 100%;
}

/* ==================== 图标动画 ==================== */

/* 图标悬停动画 */
.step-icon,
.advantage-card .icon,
.hero-feature-card .icon,
.contact-card .icon,
.time-card .icon,
.philosophy-card .icon,
.join-item .icon {
  transition: transform 0.3s ease;
}

.step-icon:hover,
.advantage-card:hover .icon,
.hero-feature-card:hover .icon,
.contact-card:hover .icon,
.time-card:hover .icon,
.philosophy-card:hover .icon,
.join-item:hover .icon {
  transform: scale(1.1) rotate(5deg);
}

/* 服务图标动画 */
.service-card .icon {
  transition: transform 0.3s ease;
}

.service-card:hover .icon {
  animation: bounce 0.6s ease-in-out;
}

/* ==================== 文字动画 ==================== */

/* 标题淡入 */
h1, h2, h3 {
  opacity: 0;
  animation: slideUp 0.6s ease-out forwards;
}

/* 逐字淡入效果 */
.text-animate {
  display: inline-block;
  animation: fadeIn 0.6s ease-out forwards;
}

/* ==================== 数字计数动画 ==================== */
@keyframes countUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.stat-number {
  animation: countUp 0.8s ease-out forwards;
}

/* ==================== 表单动画 ==================== */

.form-group input,
.form-group select,
.form-group textarea {
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

/* ==================== FAQ动画 ==================== */

.faq-item {
  transition: all 0.3s ease;
}

.faq-answer {
  animation: fadeIn 0.3s ease-out;
}

/* ==================== 页面切换动画 ==================== */

/* 页面淡入 */
body {
  animation: fadeIn 0.3s ease-out;
}

/* ==================== 加载动画 ==================== */

/* 加载指示器 */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ==================== 移动端特定动画 ==================== */

/* 移动端触摸反馈 */
@media (max-width: 768px) {
  /* 移动端点击效果 */
  .service-card:active,
  .advantage-card:active,
  .city-card:active,
  .btn-rescue:active,
  .btn-service:active {
    transform: scale(0.97);
  }

  /* 移动端页面加载动画更快 */
  .fade-in,
  .slide-up,
  .slide-in-left,
  .slide-in-right {
    animation-duration: 0.4s;
  }

  /* 移动端滚动动画更快速 */
  .animate-on-scroll {
    transition: opacity 0.4s ease-out, transform 0.4s ease-out;
  }
}

/* ==================== 首页特定动画 ==================== */

/* 英雄区域文字动画 */
.hero h1 {
  animation: slideUp 0.8s ease-out forwards;
}

.hero .subtitle {
  animation: slideUp 0.8s ease-out 0.2s forwards;
  opacity: 0;
}

.hero .description {
  animation: slideUp 0.8s ease-out 0.4s forwards;
  opacity: 0;
}

.hero .btn-rescue {
  animation: slideUp 0.8s ease-out 0.6s forwards;
  opacity: 0;
}

/* 特色卡片交错动画 */
.hero-feature-card:nth-child(1) {
  animation: slideUp 0.6s ease-out 0.8s forwards;
  opacity: 0;
}

.hero-feature-card:nth-child(2) {
  animation: slideUp 0.6s ease-out 1s forwards;
  opacity: 0;
}

/* 统计数字交错动画 */
.stat-item:nth-child(1) {
  animation: scaleIn 0.5s ease-out 0.3s forwards;
  opacity: 0;
}

.stat-item:nth-child(2) {
  animation: scaleIn 0.5s ease-out 0.4s forwards;
  opacity: 0;
}

.stat-item:nth-child(3) {
  animation: scaleIn 0.5s ease-out 0.5s forwards;
  opacity: 0;
}

.stat-item:nth-child(4) {
  animation: scaleIn 0.5s ease-out 0.6s forwards;
  opacity: 0;
}

.stat-item:nth-child(5) {
  animation: scaleIn 0.5s ease-out 0.7s forwards;
  opacity: 0;
}

/* ==================== 页面切换动画 ==================== */

/* 页面切换淡入淡出 */
.page-transition {
  animation: fadeIn 0.3s ease-out;
}

/* ==================== 性能优化 ==================== */

/* 减少动画在低端设备上的性能影响 */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* GPU加速 */
.animate-on-scroll,
.service-card,
.advantage-card,
.review-card,
.knowledge-card,
.pricing-card {
  will-change: transform, opacity;
  backface-visibility: hidden;
  perspective: 1000px;
}

/* ==================== 悬浮按钮 ==================== */

.floating-buttons {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.float-button {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: 12px;
  background: #ffffff;
  color: #333;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid #e0e0e0;
  transition: all 0.3s ease;
  opacity: 0;
  transform: translateX(100px);
  overflow: hidden;
  position: relative;
  white-space: nowrap;
  min-width: 70px;
}

.float-button.show {
  opacity: 1;
  transform: translateX(0);
}

.float-button:hover {
  transform: translateX(-5px) scale(1.05);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15);
  border-color: var(--primary-color);
}

.float-button:active {
  transform: translateX(-5px) scale(0.98);
}

.float-icon {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.float-text {
  line-height: 1.2;
}

.float-phone {
  line-height: 1.2;
  font-weight: 500;
  display: none;
}

/* 悬浮按钮波纹效果 */
.float-button .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(249, 91, 0, 0.2);
  transform: scale(0);
  pointer-events: none;
}

/* 不同按钮的样式 */
.float-button#float-join {
  border-color: #e0e0e0;
}

.float-button#float-join:hover {
  border-color: var(--secondary-color);
  box-shadow: 0 6px 24px rgba(255, 107, 53, 0.2);
}

.float-button#float-join .ripple {
  background: rgba(255, 107, 53, 0.2);
}

/* 移动端优化 */
@media (max-width: 768px) {
  .floating-buttons {
    bottom: 80px;
    left: 5%;
    right: 5%;
    width: 90%;
    gap: 12px;
  }

  .float-button {
    flex-direction: row;
    justify-content: center;
    gap: 12px;
    padding: 15px 20px;
    font-size: 15px;
    width: 100%;
    min-height: 50px;
  }

  .float-icon {
    width: 28px;
    height: 28px;
  }

  .float-phone {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-color);
    display: inline;
  }

  /* 仅显示图标模式（可选） */
  .float-button:hover .float-text,
  .float-button.show .float-text {
    opacity: 1;
  }
}

/* 性能优化 */
.float-button {
  will-change: transform, opacity;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border: 1px solid #f95b00;
}

@keyframes pulse {
  0% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.5;
  }
  100% {
    transform: translate(-50%, -50%) scale(1.3);
    opacity: 0;
  }
}