* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  /* 防止文本选择 */
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  /* 防止文本复制 */
  -webkit-touch-callout: none;
  /* 防止长按菜单 */
  -webkit-tap-highlight-color: transparent;
  /* 防止点击高亮 */
}

/* 防止图片拖动 */
img {
  pointer-events: none;
  -webkit-user-drag: none;
  user-drag: none;
}

/* 防止链接被选择 */
a {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

/* 防止表单元素被选择（如果需要） */
input, textarea, select {
  -webkit-user-select: text;
  -moz-user-select: text;
  -ms-user-select: text;
  user-select: text;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background: #f8f9fa;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 30px;
}

/* 全局间距优化 */
.section-title {
  margin-bottom: 50px;
}

.category-container,
.solution-container,
.procurement-container,
.service-container,
.case-container,
.why-choose-container,
.features-container,
.about-container,
.promotion-container {
  margin-bottom: 80px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

/* Header */
.header {
  background: #ffffff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: relative;
  z-index: 1000;
  padding: 10px 0;
}

/* 汉堡菜单按钮 */
.hamburger-menu {
  position: absolute;
  top: 20px;
  left: 20px;
  z-index: 1002;
  cursor: pointer;
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: 10px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(10px);
}

.hamburger-menu span {
  display: block;
  width: 24px;
  height: 3px;
  background: white;
  border-radius: 3px;
  transition: all 0.3s ease;
}

.hamburger-menu.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

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

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

.logo-container {
  position: relative;
  text-align: center;
  padding: 20px 0;
  z-index: 1001;
}

.logo {
  font-size: 3em;
  font-weight: 700;
  text-decoration: none;
  display: inline-block;
  background: linear-gradient(90deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4, #ffeaa7, #ff6b6b);
  background-size: 400% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientFlow 8s ease infinite;
  letter-spacing: -0.02em;
}

.logo span {
  background: linear-gradient(90deg, #764ba2, #667eea, #f093fb, #f5576c, #764ba2);
  background-size: 400% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientFlow 6s ease infinite;
}

.logo-tagline {
  font-size: 1.5em;
  font-weight: 500;
  margin-top: 10px;
  background: linear-gradient(90deg, #4ecdc4, #45b7d1, #96ceb4, #ffeaa7, #4ecdc4);
  background-size: 400% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientFlow 10s ease infinite;
  letter-spacing: 0.01em;
}

/* Section titles with gradient effect */
.section-title h2 {
  font-size: 2.8em;
  font-weight: 700;
  margin-bottom: 15px;
  background: linear-gradient(90deg, #667eea, #764ba2, #f093fb, #f5576c, #667eea);
  background-size: 400% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientFlow 8s ease infinite;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.section-title p {
  font-size: 1.1em;
  color: #666;
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Feature titles with gradient effect */
.features-title {
  color: #2c3e50;
  font-size: 1.2em;
  font-weight: 600;
  margin-bottom: 10px;
  background: linear-gradient(90deg, #667eea, #764ba2, #667eea);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientFlow 6s ease infinite;
}

/* Why choose us titles with gradient effect */
.why-choose-info h3 {
  font-size: 1.2em;
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 10px;
  background: linear-gradient(90deg, #667eea, #764ba2, #667eea);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientFlow 6s ease infinite;
}

/* Solution item titles with gradient effect */
.solution-item-title {
  font-size: 1.4em;
  font-weight: 600;
  color: #2c3e50;
  margin: 100px 0 15px;
  background: linear-gradient(90deg, #667eea, #764ba2, #667eea);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientFlow 6s ease infinite;
}

/* Service item titles with gradient effect */
.item-title {
  font-size: 1.2em;
  font-weight: 600;
  color: #2c3e50;
  margin-top: 60px;
  margin-bottom: 15px;
  background: linear-gradient(90deg, #667eea, #764ba2, #667eea);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientFlow 6s ease infinite;
}

/* Procurement item titles with gradient effect */
.procurement-item h3 {
  font-size: 1.2em;
  font-weight: 600;
  color: #2c3e50;
  margin-top: 60px;
  margin-bottom: 15px;
  background: linear-gradient(90deg, #667eea, #764ba2, #667eea);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientFlow 6s ease infinite;
}

/* About card titles with gradient effect */
.about-card-title {
  font-size: 1.4em;
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 20px;
  text-align: center;
  position: relative;
  padding-bottom: 10px;
  background: linear-gradient(90deg, #667eea, #764ba2, #667eea);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientFlow 6s ease infinite;
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
  padding: 20px 0;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 20px;
  position: relative;
  background: #ffffff;
  padding: 15px 30px;
  border-radius: 50px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(102, 126, 234, 0.2);
  backdrop-filter: blur(10px);
}

.nav-menu > li {
  position: relative;
}

.nav-menu > li > a {
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
  display: block;
  padding: 8px 20px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: unset;
  -webkit-text-fill-color: white;
  border-radius: 20px;
  margin: 0 5px;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
  transition: all 0.3s ease;
}

.nav-menu > li > a:hover {
  background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
}

.dropdown-arrow {
  font-size: 0.8em;
  transition: transform 0.3s ease;
  color: white;
}

.dropdown.active .dropdown-arrow {
  transform: rotate(180deg);
}

.dropdown-menu a {
  padding: 10px 20px;
  transition: all 0.3s ease;
  white-space: nowrap;
  display: block;
  cursor: pointer;
  background: linear-gradient(90deg, #667eea, #764ba2, #667eea);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientFlow 6s ease infinite;
}

.dropdown-menu a:hover {
  background: linear-gradient(90deg, #f5576c, #f093fb, #764ba2, #667eea);
  background-size: 400% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientFlow 4s ease infinite;
  padding-left: 25px;
  transform: translateX(5px);
}

.business-btn {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
  -webkit-background-clip: unset !important;
  -webkit-text-fill-color: white !important;
  padding: 8px 20px !important;
  border-radius: 20px;
  margin-left: 15px;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
  transition: all 0.3s ease;
}

.business-btn:hover {
  background: linear-gradient(135deg, #764ba2 0%, #667eea 100%) !important;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.dropdown-arrow {
  font-size: 0.8em;
  transition: transform 0.3s ease;
  color: white;
}

.dropdown.active .dropdown-arrow {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: #ffffff;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
  border-radius: 8px;
  padding: 10px 0;
  min-width: 350px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s ease;
  z-index: 1000;
  border: 1px solid rgba(102, 126, 234, 0.2);
}

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

.dropdown-menu li {
  list-style: none;
}

.menu-item {
  position: relative;
}

.dropdown-menu a {
  padding: 10px 20px;
  transition: all 0.3s ease;
  white-space: nowrap;
  display: block;
  cursor: pointer;
  background: linear-gradient(90deg, #667eea, #764ba2, #667eea);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientFlow 6s ease infinite;
}

.menu-desc {
  display: none;
  padding: 10px 20px 15px;
  font-size: 0.85em;
  line-height: 1.4;
  background: linear-gradient(135deg, #f0f2ff, #e8eaf6);
  border-top: 1px solid rgba(102, 126, 234, 0.2);
  margin: 0 10px;
  border-radius: 0 0 8px 8px;
  white-space: normal;
  color: #333;
  transition: all 0.3s ease;
}

.menu-item.active .menu-desc {
  display: block;
  animation: fadeInUp 0.3s ease-out;
}

.dropdown-menu a:hover {
  background: linear-gradient(90deg, #f5576c, #f093fb, #764ba2, #667eea);
  background-size: 400% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientFlow 4s ease infinite;
  padding-left: 25px;
  transform: translateX(5px);
}

.dropdown-desc {
  display: block;
  font-size: 0.85em;
  color: rgba(255, 255, 255, 0.6);
  padding: 5px 20px 10px;
  line-height: 1.4;
  white-space: normal;
  margin-top: -5px;
}

.contact-btn {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 10px 25px;
  border-radius: 25px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
}

.contact-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

/* Banner */
.banner-box {
  background: #ffffff;
  color: #333;
  padding: 120px 20px;
  text-align: center;
  margin-bottom: 60px;
  border-radius: 16px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(102, 126, 234, 0.2);
  border: 1px solid rgba(102, 126, 234, 0.3);
}

.banner-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, #f0f2ff 0%, #e8eaf6 100%);
  z-index: 0;
}

.banner-box::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 20%, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(240, 147, 251, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 40% 80%, rgba(102, 126, 234, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 60% 20%, rgba(240, 147, 251, 0.12) 0%, transparent 50%),
    linear-gradient(45deg, transparent 0%, rgba(102, 126, 234, 0.05) 50%, transparent 100%);
  background-size: 200% 200%;
  animation: gradientFlow 10s ease infinite;
  z-index: 1;
}

/* 高端流动权益动画 */
.banner-box .flowing-lights {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
  overflow: hidden;
}

.banner-box .flowing-lights::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    45deg,
    transparent 0%,
    rgba(102, 126, 234, 0.1) 25%,
    rgba(240, 147, 251, 0.1) 50%,
    rgba(102, 126, 234, 0.1) 75%,
    transparent 100%
  );
  animation: flowAnimation 15s linear infinite;
  transform: rotate(0deg);
}

@keyframes flowAnimation {
  0% {
    transform: rotate(0deg) translate(0, 0);
  }
  100% {
    transform: rotate(360deg) translate(0, 0);
  }
}

/* 流动权益元素 */
.banner-box .权益元素 {
  position: absolute;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.15) 0%, rgba(240, 147, 251, 0.15) 100%);
  animation: float 8s ease-in-out infinite;
  z-index: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 30px rgba(102, 126, 234, 0.2);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(102, 126, 234, 0.2);
}

.banner-box .权益元素:nth-child(1) {
  top: 15%;
  left: 10%;
  animation-delay: 0s;
}

.banner-box .权益元素:nth-child(2) {
  top: 60%;
  right: 15%;
  animation-delay: 1.5s;
}

.banner-box .权益元素:nth-child(3) {
  bottom: 20%;
  left: 20%;
  animation-delay: 3s;
}

.banner-box .权益元素:nth-child(4) {
  top: 25%;
  right: 20%;
  animation-delay: 4.5s;
}

.banner-box .权益元素:nth-child(5) {
  bottom: 30%;
  right: 10%;
  animation-delay: 6s;
}

.banner-box .权益元素:nth-child(6) {
  top: 40%;
  left: 5%;
  animation-delay: 7.5s;
}

/* 权益图标 */
.banner-box .权益图标 {
  font-size: 3em;
  animation: pulse 3s ease-in-out infinite;
  filter: drop-shadow(0 4px 8px rgba(102, 126, 234, 0.3));
}

@keyframes pulse {
  0% {
    transform: scale(1);
    opacity: 0.8;
  }
  50% {
    transform: scale(1.1);
    opacity: 1;
  }
  100% {
    transform: scale(1);
    opacity: 0.8;
  }
}

@keyframes float {
  0% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(180deg);
  }
  100% {
    transform: translateY(0px) rotate(360deg);
  }
}



.banner-box h1 {
  font-size: 4.5em;
  font-weight: 700;
  margin-top: -20px;
  margin-bottom: 20px;
  position: relative;
  z-index: 2;
  background: linear-gradient(90deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4, #ffeaa7, #ff6b6b);
  background-size: 400% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientFlow 8s ease infinite;
}

@keyframes gradientFlow {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.banner-box p {
  position: relative;
  z-index: 2;
  opacity: 0.9;
  background: linear-gradient(90deg, #667eea, #764ba2, #f093fb, #f5576c, #667eea);
  background-size: 400% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientFlow 10s ease infinite;
}

.banner-box p:nth-child(2) {
  font-size: 50em;
  margin-bottom: 20px;
}

.banner-box p:nth-child(3) {
  font-size: 3.25em;
  margin-top: 20px;
  margin-bottom: 40px;
  background: linear-gradient(90deg, #4ecdc4, #45b7d1, #96ceb4, #ffeaa7, #4ecdc4);
  background-size: 400% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientFlow 8s ease infinite;
}

.banner-btn {
  display: inline-block;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white !important;
  padding: 15px 40px;
  border-radius: 30px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  position: relative;
  z-index: 2;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
  margin-top: 20px;
}

.banner-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

/* Section Titles */
.section-title {
  text-align: center;
  margin-bottom: 60px;
  position: relative;
}

.section-title h2 {
  font-size: 2.5em;
  color: #2c3e50;
  margin-bottom: 20px;
  font-weight: 700;
}

.section-title p {
  color: #7f8c8d;
  font-size: 1.2em;
  max-width: 700px;
  margin: 0 auto;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 2px;
}

/* Category Section */
.category-container {
  margin-bottom: 80px;
}

.category-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
}

.category-item {
  background: white;
  border-radius: 16px;
  padding: 35px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(102, 126, 234, 0.1);
}

.category-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.category-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
  border-color: rgba(102, 126, 234, 0.3);
}

.title-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 2px solid #f0f0f0;
}

.title {
  font-size: 1.6em;
  font-weight: 600;
  color: #2c3e50;
  letter-spacing: -0.01em;
}

.category-more {
  color: #667eea;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 8px 16px;
  border-radius: 20px;
  background: rgba(102, 126, 234, 0.05);
}

.category-more:hover {
  color: #764ba2;
  background: rgba(102, 126, 234, 0.1);
  transform: translateY(-2px);
}

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

.category-product-item {
  text-align: center;
  padding: 20px;
  border-radius: 12px;
  background: #f8f9fa;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.category-product-item:hover {
  background: #f0f2ff;
  border-color: #667eea;
  transform: translateY(-3px);
}

.product-image {
  width: 80px;
  height: 80px;
  margin: 0 auto 15px;
  border-radius: 50%;
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.product-image img {
  width: 50px;
  height: 50px;
  object-fit: contain;
}

.product-title {
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 8px;
  font-size: 1.1em;
}

.product-desc {
  color: #7f8c8d;
  font-size: 0.95em;
}

/* Solution Section */
.solution-container {
  margin-bottom: 80px;
}

.solution-list {
  max-width: 1200px;
  margin: 0 auto;
}

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

/* 确保在小屏幕上也保持两排展示 */
@media (max-width: 768px) {
  .solution-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}

@media (max-width: 480px) {
  .solution-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }
}

.solution-item {
  background: white;
  border-radius: 16px;
  padding: 35px 25px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  border: 1px solid rgba(102, 126, 234, 0.1);
}

.solution-item::before {
  content: '';
  position: absolute;
  top: 25px;
  left: 50%;
  transform: translateX(-50%);
  width: 70px;
  height: 70px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.solution-item:nth-child(1)::before {
  content: '🚀';
  font-size: 1.8em;
}

.solution-item:nth-child(2)::before {
  content: '🎁';
  font-size: 1.8em;
}

.solution-item:nth-child(3)::before {
  content: '🏆';
  font-size: 1.8em;
}

.solution-item:nth-child(4)::before {
  content: '🎁';
  font-size: 1.8em;
}

.solution-item:nth-child(5)::before {
  content: '🌟';
  font-size: 1.8em;
}

.solution-item:nth-child(6)::before {
  content: '🎄';
  font-size: 1.8em;
}

.solution-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
  border-color: rgba(102, 126, 234, 0.3);
}

.solution-item-title {
  font-size: 1.3em;
  font-weight: 600;
  color: #2c3e50;
  margin: 90px 0 15px;
  letter-spacing: -0.01em;
}

.solution-item-desc {
  color: #7f8c8d;
  font-size: 1em;
  line-height: 1.6;
}

/* Service Section */
.service-container {
  background: #f8f9fa;
  border-radius: 16px;
  padding: 60px;
  margin-bottom: 80px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.service-list-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  max-width: 1000px;
  margin: 0 auto;
}

.service-list-content-item {
  text-align: center;
  padding: 30px;
  border-radius: 12px;
  background: #f8f9fa;
  transition: all 0.3s ease;
  position: relative;
}

.service-list-content-item::before {
  content: '';
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.service-list-content-item:nth-child(1)::before {
  content: '🔍';
  font-size: 1.5em;
  color: white;
}

.service-list-content-item:nth-child(2)::before {
  content: '📦';
  font-size: 1.5em;
  color: white;
}

.service-list-content-item:nth-child(3)::before {
  content: '💰';
  font-size: 1.5em;
  color: white;
}

.service-list-content-item:nth-child(4)::before {
  content: '🛎️';
  font-size: 1.5em;
  color: white;
}

.service-list-content-item:nth-child(5)::before {
  content: '📱';
  font-size: 1.5em;
  color: white;
}

.service-list-content-item:nth-child(6)::before {
  content: '📈';
  font-size: 1.5em;
  color: white;
}

.service-list-content-item:nth-child(7)::before {
  content: '🎁';
  font-size: 1.5em;
  color: white;
}

.service-list-content-item:nth-child(8)::before {
  content: '✅';
  font-size: 1.5em;
  color: white;
}

.service-list-content-item:nth-child(9)::before {
  content: '🛠️';
  font-size: 1.5em;
  color: white;
}

.service-list-content-item:hover {
  transform: translateY(-5px);
  background: #f0f2ff;
}

.item-title {
  font-size: 1.2em;
  font-weight: 600;
  color: #2c3e50;
  margin-top: 60px;
  margin-bottom: 15px;
}

.item-desc {
  color: #7f8c8d;
  font-size: 1em;
  line-height: 1.6;
}

/* Procurement Channels Section */
.procurement-container {
  margin-bottom: 80px;
  background: #f8f9fa;
  border-radius: 16px;
  padding: 60px;
  color: #333;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  border: 1px solid rgba(102, 126, 234, 0.1);
}

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

.procurement-item {
  text-align: center;
  padding: 30px;
  border-radius: 12px;
  background: #f8f9fa;
  transition: all 0.3s ease;
  position: relative;
  border: 1px solid rgba(102, 126, 234, 0.1);
}

.procurement-item::before {
  content: '';
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.procurement-item:nth-child(1)::before {
  content: '📦';
  font-size: 1.5em;
  color: white;
}

.procurement-item:nth-child(2)::before {
  content: '🔌';
  font-size: 1.5em;
  color: white;
}

.procurement-item:hover {
  transform: translateY(-5px);
  background: #f0f2ff;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  border-color: rgba(102, 126, 234, 0.3);
}

.procurement-item h3 {
  font-size: 1.2em;
  font-weight: 600;
  color: #2c3e50;
  margin-top: 60px;
  margin-bottom: 15px;
}

.procurement-item p {
  line-height: 1.6;
  color: #7f8c8d;
  font-size: 1em;
}

/* Case Section */
.case-container {
  background: white;
  border-radius: 16px;
  padding: 60px;
  margin-bottom: 80px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.case {
  margin-bottom: 50px;
  padding-bottom: 50px;
  border-bottom: 2px solid #f0f0f0;
  display: flex;
  gap: 40px;
  align-items: center;
}

.case:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.case-image {
  flex: 1;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.case-image img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

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

.case-content {
  flex: 1;
}

.case-body-title {
  font-size: 1.8em;
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 20px;
}

.case-content-title {
  font-weight: 600;
  color: #667eea;
  margin: 20px 0 10px;
  font-size: 1.2em;
}

.case-content-desc {
  color: #555;
  line-height: 1.8;
  font-size: 1.05em;
}

/* Footer */
.footer-box {
  background: #2c3e50;
  color: white;
  padding: 80px 20px 40px;
  margin-top: 100px;
  position: relative;
  overflow: hidden;
}

.footer-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.icon-item {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 60px;
  text-align: center;
}

.icon-item li {
  list-style: none;
}

.icon-item .icon {
  width: 80px;
  height: 80px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 2em;
  transition: all 0.3s ease;
}

.icon-item li:hover .icon {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  transform: translateY(-5px);
}

.icon-item .title {
  color: white;
  font-size: 1.2em;
  font-weight: 600;
  margin-bottom: 10px;
}

.icon-item .desc {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95em;
}

.footer-content .left {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 50px;
}

.footer-content .left li {
  list-style: none;
}

.footer-content .left .title {
  font-weight: 600;
  margin-bottom: 20px;
  color: #667eea;
  font-size: 1.2em;
}

.footer-content .left .item {
  display: block;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 12px;
  transition: color 0.3s ease;
  text-decoration: none;
}

.footer-content .left .item:hover {
  color: white;
  transform: translateX(5px);
  display: inline-block;
}

.bottom {
  text-align: center;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copy {
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 15px;
  font-size: 0.95em;
}

.copy a {
  color: #667eea;
  text-decoration: none;
  transition: color 0.3s ease;
  margin: 0 5px;
}

.copy a:hover {
  color: white;
  text-decoration: underline;
}

/* Promotion Section */
.promotion-container {
  margin-bottom: 80px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 16px;
  padding: 80px 60px;
  color: white;
  box-shadow: 0 15px 35px rgba(102, 126, 234, 0.4);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.promotion-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,%3Csvg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"%3E%3Cpath d="M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z" fill="rgba(255,255,255,0.1)" fill-opacity="0.1" fill-rule="evenodd"/%3E%3C/svg%3E');
  z-index: 0;
}

.promotion-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}

.promotion-title {
  font-size: 2.5em;
  font-weight: 700;
  margin-bottom: 20px;
  background: linear-gradient(90deg, #ffffff, #f0f2ff, #ffffff);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientFlow 8s ease infinite;
}

.promotion-subtitle {
  font-size: 1.3em;
  font-weight: 500;
  margin-bottom: 30px;
  opacity: 0.9;
  background: linear-gradient(90deg, #ffffff, #f0f2ff, #ffffff);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientFlow 6s ease infinite;
}

.promotion-desc {
  font-size: 1.1em;
  line-height: 1.8;
  margin-bottom: 40px;
  opacity: 0.9;
}

.promotion-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.promotion-btn {
  display: inline-block;
  padding: 15px 40px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.promotion-btn.primary {
  background: white;
  color: #667eea;
}

.promotion-btn.primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(255, 255, 255, 0.3);
}

.promotion-btn.secondary {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border: 2px solid white;
}

.promotion-btn.secondary:hover {
  background: white;
  color: #667eea;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(255, 255, 255, 0.3);
}

/* Why Choose Us Section */
.why-choose-container {
  margin-bottom: 80px;
  background: #ffffff;
  border-radius: 16px;
  padding: 60px;
  color: #333;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(102, 126, 234, 0.2);
}

.why-choose-content {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 40px;
  }

.why-choose-item {
  display: flex;
  align-items: flex-start;
  background: #f8f9fa;
  border-radius: 12px;
  padding: 25px;
  transition: all 0.3s ease;
  border: 1px solid rgba(102, 126, 234, 0.1);
}

.why-choose-item:hover {
  transform: translateY(-5px);
  background: #f0f2ff;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  border-color: rgba(102, 126, 234, 0.3);
}

.why-choose-icon {
  font-size: 2em;
  margin-right: 20px;
  flex-shrink: 0;
  color: #667eea;
  transition: all 0.3s ease;
}

.why-choose-item:hover .why-choose-icon {
  transform: scale(1.1);
  color: #764ba2;
}

.why-choose-info {
  flex: 1;
}

.why-choose-info h3 {
  font-size: 1.2em;
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 10px;
}

.why-choose-info p {
  color: #666;
  line-height: 1.6;
  margin: 0;
}

/* Features Section */
.features-container {
  margin-bottom: 80px;
  background: #f8f9fa;
  border-radius: 16px;
  padding: 60px;
  color: #333;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  border: 1px solid rgba(102, 126, 234, 0.1);
}

.features-content {
  max-width: 1200px;
  margin: 0 auto;
}

.features-item {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  text-align: center;
  padding: 0;
  margin: 0;
}

.features-item li {
  list-style: none;
  transition: all 0.3s ease;
  padding: 20px;
  border-radius: 12px;
}

.features-item li:hover {
  transform: translateY(-5px);
  background: rgba(102, 126, 234, 0.05);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.features-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 2em;
  color: white;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
  transition: all 0.3s ease;
}

.features-item li:hover .features-icon {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.features-title {
  color: #2c3e50;
  font-size: 1.2em;
  font-weight: 600;
  margin-bottom: 10px;
}

.features-desc {
  color: #7f8c8d;
  font-size: 1em;
  line-height: 1.6;
}

/* About Us Section */
.about-container {
  margin-bottom: 80px;
  background: #ffffff;
  border-radius: 16px;
  padding: 60px;
  color: #333;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(102, 126, 234, 0.2);
}

.about-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.about-card {
  background: #f8f9fa;
  border-radius: 16px;
  padding: 35px;
  transition: all 0.3s ease;
  border: 1px solid rgba(102, 126, 234, 0.1);
  position: relative;
  overflow: hidden;
}

.about-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.about-card:hover {
  transform: translateY(-10px);
  background: #f0f2ff;
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
  border-color: rgba(102, 126, 234, 0.3);
}

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

.about-card-icon {
  font-size: 2.5em;
  margin-bottom: 20px;
  display: block;
  text-align: center;
  transition: transform 0.3s ease;
}

.about-card:hover .about-card-icon {
  transform: scale(1.1);
}

.about-card-title {
  font-size: 1.4em;
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 20px;
  text-align: center;
  position: relative;
  padding-bottom: 10px;
}

.about-card-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 3px;
}

.about-card-desc {
  color: #666;
  line-height: 1.7;
  margin-bottom: 15px;
  text-align: justify;
}

.about-card-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.about-card-list-item {
  margin-bottom: 15px;
  display: flex;
  align-items: flex-start;
  transition: all 0.3s ease;
  padding-left: 5px;
}

.about-card-list-item:hover {
  transform: translateX(5px);
}

.about-card-list-icon {
  color: #667eea;
  font-size: 1.2em;
  margin-right: 10px;
  font-weight: bold;
  flex-shrink: 0;
  margin-top: 2px;
}

.about-card-list.numbered .about-card-list-icon {
  font-weight: normal;
}

.about-card-highlight {
  background: linear-gradient(135deg, #f0f2ff, #e8eaf6);
  padding: 15px;
  border-radius: 10px;
  margin-top: 20px;
  border-left: 4px solid #667eea;
  font-weight: 600;
  color: #2c3e50;
  text-align: justify;
}

/* Contact Popup */
.contact-popup-btn {
  position: fixed;
  right: 30px;
  top: 50%;
  transform: translateY(-50%);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 15px 20px;
  border-radius: 50px;
  box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
  cursor: pointer;
  z-index: 999;
  transition: all 0.3s ease;
  font-weight: 600;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-popup-btn:hover {
  transform: translateY(-50%) scale(1.05);
  box-shadow: 0 6px 25px rgba(102, 126, 234, 0.4);
}

.cloud-fixed-box {
  position: fixed;
  right: 100px;
  top: 50%;
  transform: translateY(-50%) scale(0);
  background: white;
  border-radius: 16px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
  padding: 25px 20px;
  z-index: 1000;
  max-width: 280px;
  transition: all 0.3s ease;
  opacity: 0;
  visibility: hidden;
}

.cloud-fixed-box.active {
  transform: translateY(-50%) scale(1);
  opacity: 1;
  visibility: visible;
}

.cloud-fixed-box-title {
  font-weight: 600;
  color: #2c3e50;
  text-align: center;
  margin-bottom: 20px;
  padding-bottom: 15px;
  border-bottom: 2px solid #f0f0f0;
  font-size: 1.1em;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.cloud-fixed-box-close {
  font-size: 1.2em;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.3s ease;
  color: #999;
}

.cloud-fixed-box-close:hover {
  transform: rotate(90deg);
  color: #667eea;
}

.cloud-fixed-box-tel {
  margin-bottom: 20px;
  text-align: center;
}

.cloud-fixed-box-tel:last-child {
  margin-bottom: 0;
}

.cloud-fixed-box-tel a {
  text-decoration: none;
  color: #333;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 15px;
  border-radius: 10px;
  transition: all 0.3s ease;
  background: linear-gradient(135deg, #f0f2ff, #e8eaf6);
  border: 1px solid rgba(102, 126, 234, 0.2);
  box-shadow: 0 2px 8px rgba(102, 126, 234, 0.1);
}

.cloud-fixed-box-icon {
  font-size: 1.5em;
  margin-bottom: 10px;
  transition: transform 0.3s ease;
}

.cloud-fixed-box-tel a:hover .cloud-fixed-box-icon {
  transform: scale(1.1);
}

.cloud-fixed-box-tel a:hover {
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  transform: translateY(-3px);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.cloud-fixed-box-tit {
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 8px;
  font-size: 1em;
  transition: color 0.3s ease;
}

.cloud-fixed-box-con {
  color: #7f8c8d;
  font-size: 0.95em;
  transition: color 0.3s ease;
}

.cloud-fixed-box-tel a:hover .cloud-fixed-box-tit,
.cloud-fixed-box-tel a:hover .cloud-fixed-box-con {
  color: white;
}

.enquiry-btn {
  display: inline-block;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #333 !important;
  padding: 15px 40px;
  border-radius: 30px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.enquiry-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

/* Mobile Button */
.mobile-btn-box {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: white;
  padding: 20px;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: 999;
}

.mobile-btn-box span {
  color: #2c3e50;
  font-weight: 500;
}

.mobile-btn-box a {
  text-decoration: none;
  color: inherit;
}

.mobile-btn-box .btn a {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white !important;
  padding: 12px 30px;
  border-radius: 25px;
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

/* 动态rem缩放方案 - 针对iPhone 14 Pro Max优化 */
html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

/* 响应式字体大小 - 针对iPhone 14 Pro Max (428px) 优化 */
@media (max-width: 768px) {
  html {
    font-size: 15px;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }
}

@media (max-width: 430px) {
  html {
    font-size: 13.5px;
  }
}

/* 触摸目标最小尺寸 - 符合iOS人机界面指南 */
button, a, input, select, textarea {
  min-height: 48px;
  min-width: 48px;
  touch-action: manipulation;
}

/* 响应式布局 - 针对iPhone 14 Pro Max优化 */
@media (max-width: 768px) {
  /* 基础布局调整 */
  body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    -webkit-overflow-scrolling: touch;
    overflow-x: hidden;
    scroll-behavior: smooth;
  }
  
  .container {
    padding: 0.75rem;
    max-width: 100%;
  }
  
  /* 头部调整 */
  .header {
    padding: 0.5rem 0;
  }
  
  .logo-container {
    padding: 1rem 0;
  }
  
  .logo {
    font-size: 2rem;
  }
  
  .logo-tagline {
    font-size: 1.5rem;
  }
  
  .header-content {
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
  }
  
  /* 汉堡菜单显示 */
  .hamburger-menu {
    display: flex;
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1002;
  }
  
  /* 导航菜单调整为侧边滑出式 */
  .header-content {
    position: relative;
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    left: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 80px 1.5rem 2rem;
    border-radius: 0;
    margin-top: 0;
    box-shadow: 2px 0 15px rgba(0, 0, 0, 0.3);
    transition: left 0.3s ease;
    z-index: 1001;
    background: linear-gradient(135deg, #1a237e, #283593);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-menu > li {
    width: 100%;
    text-align: left;
  }
  
  .nav-menu > li > a {
    width: 100%;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    min-height: 3rem;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    border-radius: 8px;
    margin: 0;
    background: transparent;
    color: white;
    box-shadow: none;
    -webkit-background-clip: unset;
    -webkit-text-fill-color: white;
  }
  
  .nav-menu > li > a:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: none;
    box-shadow: none;
  }
  
  /* 联系我们按钮 */
  .nav-menu .contact-btn {
    position: absolute;
    bottom: 2rem;
    right: 1.5rem;
    background: linear-gradient(135deg, #9c27b0, #ba68c8);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(156, 39, 176, 0.4);
    transition: all 0.3s ease;
  }
  
  .nav-menu .contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(156, 39, 176, 0.5);
  }
  
  /* 移动端导航菜单优化 */
  .nav-menu {
    overflow-y: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
  
  .nav-menu::-webkit-scrollbar {
    display: none;
  }
  
  /* 遮罩层 */
  .menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
  }
  
  .menu-overlay.active {
    opacity: 1;
    visibility: visible;
  }
  
  /* 确保菜单不会遮挡内容 */
  .category-container {
    margin-top: 1rem;
  }
  
  /* 轮播图调整 - 针对iPhone 14 Pro Max屏幕比例优化 */
  .banner-box {
    padding: 3rem 1rem;
    margin-top: 1rem;
    margin-bottom: 2rem;
    border-radius: 12px;
  }
  
  .el-carousel__container {
    height: 18rem !important;
  }
  
  .banner-img img {
    height: 100%;
    width: 100%;
    object-fit: cover;
  }
  
  /* 字体大小调整 */
  .banner-box h1 {
    font-size: 2.2rem;
    margin-top: 0;
    margin-bottom: 1rem;
  }
  
  .banner-box p:nth-child(2) {
    font-size: 1.2rem;
    margin-bottom: 1rem;
  }
  
  .banner-box p:nth-child(3) {
    font-size: 1.1rem;
    margin-top: 1rem;
    margin-bottom: 1.5rem;
  }
  
  .section-title h2 {
    font-size: 1.8rem;
  }
  
  .section-title p {
    font-size: 1rem;
  }
  
  .category-title h1,
  .solution-title h1,
  .solution-buy-title h1 {
    font-size: 1.6rem;
    line-height: 1.3;
    text-align: center;
  }
  
  .category-title p,
  .solution-title p,
  .solution-buy-title p {
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    text-align: center;
  }
  
  /* 网格布局调整 */
  .category-list {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .category-item {
    padding: 1.5rem;
    border-radius: 12px;
  }
  
  .title-box {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
  }
  
  .title {
    font-size: 1.3rem;
  }
  
  .category-product {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }
  
  .category-product-item {
    padding: 1rem;
    min-height: 8rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    border-radius: 10px;
  }
  
  .product-img {
    margin-bottom: 0.75rem;
  }
  
  .product-img img {
    width: 50px;
    height: 50px;
    object-fit: contain;
  }
  
  .product-title {
    font-size: 1rem;
    margin-bottom: 0.25rem;
    text-align: center;
  }
  
  .product-desc {
    font-size: 0.8rem;
    text-align: center;
  }
  
  /* 解决方案区域调整 */
  .solution-list {
    max-width: 100%;
  }
  
  .solution-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
  
  /* 确保解决方案区域在移动端正确显示为两列 */
  @media (max-width: 480px) {
    .solution-row {
      grid-template-columns: repeat(2, 1fr);
      gap: 0.75rem;
    }
  }
  
  .solution-item {
    padding: 1.5rem;
    min-height: 14rem;
    border-radius: 12px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  .solution-item .tag {
    position: absolute;
    top: 15px;
    left: 50%;
    transform: translateX(-50%);
  }
  
  .solution-item .tag img {
    width: 60px;
    height: 60px;
  }
  
  .solution-item-info {
    margin-top: 60px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  
  .solution-item-title {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
  }
  
  .solution-item-desc {
    font-size: 0.9rem;
    line-height: 1.5;
  }
  
  /* 服务区域调整 */
  .service-container,
  .case-container,
  .procurement-container,
  .why-choose-container,
  .features-container,
  .about-container {
    padding: 2rem 1.5rem;
    border-radius: 12px;
  }
  
  .service-list-content {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .service-list-content-item {
    padding: 1.5rem;
    min-height: 13rem;
    border-radius: 10px;
  }
  
  .service-list-content-item::before {
    top: -15px;
    width: 50px;
    height: 50px;
  }
  
  .item-title {
    font-size: 1.1rem;
    margin-top: 2.5rem;
  }
  
  .item-desc {
    font-size: 0.95rem;
    line-height: 1.6;
  }
  
  /* 案例展示调整 */
  .case {
    flex-direction: column;
    text-align: center;
    gap: 1.5rem;
    padding-bottom: 2rem;
    margin-bottom: 2rem;
  }
  
  .case-image {
    order: -1;
    width: 100%;
  }
  
  .case-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
  }
  
  .case-body-title {
    font-size: 1.4rem;
    margin-bottom: 1rem;
  }
  
  .case-content-title {
    font-size: 1.1rem;
    margin: 1.5rem 0 0.5rem;
  }
  
  .case-content-desc {
    font-size: 0.95rem;
    line-height: 1.6;
    text-align: left;
  }
  
  /* 页脚调整 */
  .footer-box {
    padding: 3rem 1rem 1.5rem;
    margin-top: 4rem;
  }
  
  .icon-item {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .icon-item .icon {
    width: 70px;
    height: 70px;
  }
  
  .icon-item .title {
    font-size: 1.1rem;
  }
  
  .icon-item .desc {
    font-size: 0.9rem;
  }
  
  .footer-content .left {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .footer-content .left .title {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    text-align: center;
  }
  
  .footer-content .left .item {
    font-size: 0.9rem;
    display: block;
    margin: 0 auto 0.75rem;
    text-align: center;
  }
  
  /* 促销区域调整 */
  .promotion-container {
    padding: 3rem 1.5rem;
    border-radius: 12px;
  }
  
  .promotion-title {
    font-size: 1.8rem;
  }
  
  .promotion-subtitle {
    font-size: 1.1rem;
  }
  
  .promotion-desc {
    font-size: 1rem;
    line-height: 1.6;
  }
  
  .promotion-buttons {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
  }
  
  /* 按钮调整 */
  .enquiry-btn {
    padding: 0.875rem 2rem;
    font-size: 1rem;
    min-height: 3rem;
    display: block;
    margin: 0 auto;
    text-align: center;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 25px;
  }
  
  .banner-btn {
    padding: 0.875rem 2.5rem;
    font-size: 1rem;
    min-height: 3rem;
    border-radius: 25px;
  }
  
  .promotion-btn {
    padding: 0.875rem 2rem;
    font-size: 1rem;
    min-height: 3rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 25px;
  }
  
  /* 移动按钮盒 - 针对iPhone 14 Pro Max优化 */
  .mobile-btn-box {
    display: flex;
    padding: 1rem;
    box-shadow: 0 -2px 15px rgba(0, 0, 0, 0.1);
    background: white;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 999;
  }
  
  .mobile-btn-box span {
    font-size: 0.9rem;
    flex: 1;
    text-align: center;
  }
  
  .mobile-btn-box .btn a {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    min-height: 3rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
  }
  
  /* 其他组件调整 */
  .solution-buy-content-item {
    padding: 1.5rem;
    border-radius: 10px;
  }
  
  .solution-buy-item-title {
    font-size: 1.2rem;
    margin-bottom: 1rem;
  }
  
  .solution-buy-item-desc {
    font-size: 0.95rem;
    line-height: 1.6;
  }
  
  .why-choose-item {
    padding: 1.5rem;
    border-radius: 10px;
  }
  
  .why-choose-info h3 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
  }
  
  .why-choose-info p {
    font-size: 0.95rem;
    line-height: 1.6;
  }
  
  .features-item {
    gap: 1.5rem;
  }
  
  .features-icon {
    width: 70px;
    height: 70px;
  }
  
  .features-title {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
  }
  
  .features-desc {
    font-size: 0.95rem;
    line-height: 1.6;
  }
  
  .about-card {
    padding: 1.75rem;
    border-radius: 12px;
  }
  
  .about-card-title {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
  }
  
  .about-card-desc {
    font-size: 0.95rem;
    line-height: 1.6;
  }
  
  .about-card-list-item {
    font-size: 0.95rem;
    margin-bottom: 1rem;
  }
  
  /* 采购渠道项目调整 */
  .procurement-item {
    padding: 1.5rem;
    min-height: 12rem;
    text-align: center;
  }
  
  .procurement-item::before {
    top: -15px;
    width: 55px;
    height: 55px;
  }
  
  .procurement-item h3 {
    font-size: 1.1rem;
    margin-top: 3.25rem;
    margin-bottom: 0.75rem;
  }
  
  .procurement-item p {
    font-size: 0.9rem;
    line-height: 1.5;
  }
  
  /* 间距调整 */
  .category-container,
  .solution-container,
  .procurement-container,
  .service-container,
  .case-container,
  .why-choose-container,
  .features-container,
  .about-container,
  .promotion-container {
    margin-bottom: 3rem;
  }
  
  /* 联系按钮 */
  .contact-popup-btn {
    right: 1rem;
    padding: 0.75rem;
    height: 5.5rem;
    border-radius: 25px;
  }
  
  /* 加载动画 */
  .loading {
    width: 1.75rem;
    height: 1.75rem;
  }
  
  /* 书签按钮 */
  .bookmark-btn {
    padding: 0.625rem 1.25rem;
    font-size: 0.9rem;
    border-radius: 20px;
  }
  
  /* 下拉菜单 */
  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    min-width: 100%;
    margin-top: 0.75rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-radius: 10px;
  }
  
  /* 交互体验 */
  .category-product-item:hover,
  .solution-item:hover,
  .service-list-content-item:hover,
  .procurement-item:hover,
  .why-choose-item:hover,
  .features-item li:hover,
  .about-card:hover {
    transform: none;
  }
  
  .category-product-item,
  .solution-item,
  .service-list-content-item,
  .procurement-item,
  .why-choose-item,
  .features-item li,
  .about-card {
    -webkit-tap-highlight-color: rgba(102, 126, 234, 0.2);
    transition: background-color 0.3s ease;
  }
  
  /* 联系固定框 */
  .cloud-fixed-box {
    display: none !important;
  }
  
  /* 图片显示 */
  img {
    max-width: 100%;
    height: auto;
    display: block;
  }
  
  /* 按钮点击效果 */
  button,
  a {
    -webkit-tap-highlight-color: transparent;
    transition: all 0.3s ease;
  }
  
  /* 表单元素 */
  input,
  button,
  select,
  textarea {
    font-size: 1rem;
    font-family: inherit;
  }
  
  /* 文字换行 */
  .product-title,
  .solution-item-title,
  .item-title,
  .case-body-title {
    word-wrap: break-word;
    overflow-wrap: break-word;
  }
  
  /* 购买流程 */
  .solution-buyFlow-content .service-list-content-item {
    margin-bottom: 1.5rem;
  }
  
  /* 标题显示 */
  .category-title,
  .solution-title,
  .solution-buy-title,
  .solution-service-content .solution-title {
    text-align: center;
  }
  
  /* 页脚显示 */
  .footer-content .left li {
    text-align: center;
  }
  
  /* 适配iPhone 14 Pro Max的额外调整 */
  @media (max-width: 430px) {
    .banner-box h1 {
      font-size: 2rem;
    }
    
    .el-carousel__container {
      height: 16rem !important;
    }
    
    .category-product-item {
      padding: 1rem;
    }
    
    .solution-item {
      padding: 1.75rem 1.25rem;
    }
    
    .service-container,
    .case-container,
    .procurement-container,
    .why-choose-container,
    .features-container,
    .about-container {
      padding: 1.75rem 1.25rem;
    }
  }
}

@media (min-width: 769px) {
  .mobile-btn-box {
    display: none;
  }
}

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

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

/* Loading Animation */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(102, 126, 234, 0.3);
  border-radius: 50%;
  border-top-color: #667eea;
  animation: spin 1s ease-in-out infinite;
}

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

/* Bookmark Button */
.bookmark-btn {
  position: fixed;
  top: 20px;
  right: 20px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 10px 20px;
  border-radius: 25px;
  cursor: pointer;
  z-index: 1001;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
  transition: all 0.3s ease;
  font-weight: 600;
}

.bookmark-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}