* {
  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: #ffffff;
}

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

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

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

.logo {
  font-size: 2.8em;
  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;
}

.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: 2em;
  font-weight: 500;
  margin-top: -5px;
  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;
}

/* Section titles with gradient effect */
.section-title h2 {
  font-size: 2.5em;
  font-weight: 700;
  margin-bottom: 10px;
  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;
}

/* 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: 30px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.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);
}

.title-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 25px;
  padding-bottom: 20px;
  border-bottom: 2px solid #f0f0f0;
}

.title {
  font-size: 1.5em;
  font-weight: 600;
  color: #2c3e50;
}

.category-more {
  color: #667eea;
  cursor: pointer;
  font-weight: 500;
  transition: color 0.3s ease;
  display: flex;
  align-items: center;
  gap: 5px;
}

.category-more:hover {
  color: #764ba2;
}

.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: 1100px;
  margin: 0 auto;
}

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

.solution-item {
  background: white;
  border-radius: 16px;
  padding: 40px 30px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
}

.solution-item::before {
  content: '';
  position: absolute;
  top: 30px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.solution-item:nth-child(1)::before {
  content: '🚀';
  font-size: 2em;
}

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

.solution-item:nth-child(3)::before {
  content: '🏆';
  font-size: 2em;
}

.solution-item:nth-child(4)::before {
  content: '🎁';
  font-size: 2em;
}

.solution-item:nth-child(5)::before {
  content: '�';
  font-size: 2em;
}

.solution-item:nth-child(6)::before {
  content: '🎄';
  font-size: 2em;
}

.solution-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.solution-item-title {
  font-size: 1.4em;
  font-weight: 600;
  color: #2c3e50;
  margin: 100px 0 15px;
}

.solution-item-desc {
  color: #7f8c8d;
  font-size: 1.05em;
  line-height: 1.7;
}

/* 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(auto-fit, minmax(300px, 1fr));
  gap: 40px;
  margin-top: 40px;
}

.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 {
  display: grid;
  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: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 8px;
}

.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);
}



/* Responsive */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    gap: 15px;
    padding: 10px;
  }
  
  .nav-menu {
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .banner-box h1 {
    font-size: 2.5em;
  }
  
  .banner-box p {
    font-size: 1.1em;
  }
  
  .section-title h2 {
    font-size: 2em;
  }
  
  .category-list {
    grid-template-columns: 1fr;
  }
  
  .solution-row {
    grid-template-columns: 1fr;
  }
  
  .service-list-content {
    grid-template-columns: 1fr;
  }
  
  .case {
    flex-direction: column;
    text-align: center;
  }
  
  .case-image {
    order: -1;
  }
  
  .icon-item {
    grid-template-columns: 1fr;
  }
  
  .footer-content .left {
    grid-template-columns: 1fr;
  }
  
  .cloud-fixed-box {
    display: none;
  }
  
  .mobile-btn-box {
    display: flex;
  }
  
  .container {
    padding: 10px;
  }
  
  .service-container,
  .case-container {
    padding: 30px 20px;
  }
}

@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);
}
/* 媒体查询示例 */
@media (max-width: 768px) {
  .container {
    padding: 0 10px;
  }
  .category-list {
    flex-direction: column;
  }
  .solution-row {
    flex-direction: column;
  }
}