/* 基础重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  line-height: 1.6;
  color: #1e293b;
  background: #ffffff;
  overflow-x: hidden;
}

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

/* 全局选中效果 */
::selection {
  background: #2563eb;
  color: #ffffff;
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* 按钮样式 */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

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

.btn:active::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 25px rgba(37, 99, 235, 0.5);
}

.btn-primary:active {
  transform: translateY(-1px) scale(1.02);
}

.btn-secondary {
  background: #ffffff;
  color: #2563eb;
  border: 2px solid #2563eb;
  box-shadow: 0 2px 10px rgba(37, 99, 235, 0.1);
}

.btn-secondary:hover {
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.25);
}

.btn-secondary:active {
  transform: translateY(-1px) scale(1.02);
}

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  z-index: 1000;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar.scrolled {
  background: rgba(15, 23, 42, 0.75);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(16px);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  transition: transform 0.3s ease;
}

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

.nav-title {
  font-size: 18px;
  font-weight: 600;
  color: #ffffff;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 32px;
}

.nav-link {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-size: 15px;
  font-weight: 400;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  padding: 4px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #3b82f6, #60a5fa);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform: translateX(-50%);
  border-radius: 2px;
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.5);
}

.nav-link:hover {
  color: #ffffff;
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-link.active {
  color: #ffffff;
  font-weight: 500;
}

.nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background: #ffffff;
  transition: all 0.3s ease;
}

/* Hero 区域 */
.hero {
  padding: 140px 0 80px;
  background: linear-gradient(160deg, #f0f4f8 0%, #e8eef5 50%, #dfe8f2 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(191, 219, 254, 0.3) 0%, transparent 60%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  top: 20%;
  left: 10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  filter: blur(40px);
  pointer-events: none;
  animation: float 8s ease-in-out infinite;
}

.hero-content {
  display: grid;
  grid-template-columns: 4fr 6fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: 52px;
  font-weight: 800;
  color: #1e293b;
  margin-bottom: 16px;
  line-height: 1.2;
  letter-spacing: -1px;
  background: linear-gradient(135deg, #1e293b 0%, #2563eb 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 22px;
  color: #64748b;
  margin-bottom: 20px;
  line-height: 1.5;
}

.hero-features {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.hero-features span {
  padding: 8px 16px;
  background: rgba(37, 99, 235, 0.1);
  color: #2563eb;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.3s ease;
  border: 1px solid rgba(37, 99, 235, 0.15);
}

.hero-features span:hover {
  background: rgba(37, 99, 235, 0.15);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.15);
}

.hero-slogan {
  font-size: 20px;
  color: #475569;
  margin-bottom: 32px;
  font-weight: 500;
  position: relative;
  padding-left: 16px;
}

.hero-slogan::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 24px;
  background: linear-gradient(180deg, #2563eb 0%, #3b82f6 100%);
  border-radius: 2px;
}

.hero-highlights {
  display: flex;
  gap: 32px;
  margin-bottom: 40px;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.6);
  border-radius: 12px;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.highlight-item:hover {
  background: rgba(255, 255, 255, 0.9);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.1);
}

.highlight-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, rgba(59, 130, 246, 0.15) 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.highlight-item:hover .highlight-icon {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.2) 0%, rgba(59, 130, 246, 0.25) 100%);
  transform: scale(1.1);
}

.highlight-text h4 {
  font-size: 15px;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 2px;
}

.highlight-text p {
  font-size: 13px;
  color: #64748b;
}

.hero-buttons {
  display: flex;
  gap: 16px;
}

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

.hero-image::before {
  content: '';
  position: absolute;
  width: 90%;
  height: 85%;
  background: linear-gradient(135deg, rgba(191, 219, 254, 0.4) 0%, rgba(147, 197, 253, 0.2) 100%);
  border-radius: 32px;
  box-shadow: 0 20px 60px rgba(59, 130, 246, 0.15), 0 8px 24px rgba(59, 130, 246, 0.1);
  z-index: 0;
}

.hero-product-image {
  position: relative;
  animation: float 3s ease-in-out infinite;
  z-index: 1;
}

.hero-product-image::after {
  content: '';
  position: absolute;
  bottom: -30px;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 60px;
  background: radial-gradient(ellipse, rgba(59, 130, 246, 0.4) 0%, rgba(59, 130, 246, 0.1) 40%, transparent 70%);
  border-radius: 50%;
  filter: blur(8px);
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.product-placeholder {
  border-radius: 24px;
  padding: 20px;
  width: 500px;
  max-width: 480px;
  margin: 0 auto;
}

.product-placeholder svg {
  width: 100%;
  height: auto;
}

.product-real-image {
  width: 300px;
  max-width: 480px;
  height: auto;
  border-radius: 16px;
  display: block;
  margin: 0 auto;
}

/* Section 通用样式 */
section {
  padding: 100px 0;
  position: relative;
}

/* 添加装饰性背景元素 */
section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.03) 0%, transparent 50%),
              radial-gradient(circle at 80% 50%, rgba(147, 51, 234, 0.03) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

section > .container {
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  margin-bottom: 70px;
}

.section-header h2 {
  font-size: 40px;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 20px;
  position: relative;
  display: inline-block;
  letter-spacing: -0.5px;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, #2563eb, #3b82f6);
  border-radius: 2px;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.section-subtitle {
  font-size: 18px;
  color: #64748b;
  margin-top: 32px;
  line-height: 1.8;
}

.section-divider {
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, #2563eb, #3b82f6);
  border-radius: 2px;
  margin: 20px auto 0;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

/* 核心功能区 */
.core-features {
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.feature-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 20px;
  padding: 36px 28px;
  text-align: center;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #2563eb, #3b82f6);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

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

.feature-card:hover {
  transform: translateY(-12px) scale(1.02);
  box-shadow: 0 20px 50px rgba(37, 99, 235, 0.15);
  border-color: #2563eb;
}

.feature-icon {
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, rgba(59, 130, 246, 0.15) 100%);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  transition: all 0.4s ease;
}

.feature-card:hover .feature-icon {
  transform: scale(1.1) rotate(5deg);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.15) 0%, rgba(59, 130, 246, 0.25) 100%);
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: #0f172a;
  margin-bottom: 14px;
  transition: color 0.3s ease;
}

.feature-card:hover h3 {
  color: #2563eb;
}

.feature-card p {
  font-size: 15px;
  color: #64748b;
  line-height: 1.7;
}

/* 产品中心区 */
.products {
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 50%, #ffffff 100%);
  padding: 100px 0;
}

/* 产品展示网格 */
.products-showcase {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 60px;
  align-items: stretch;
}

/* 产品卡片 V2 */
.product-card-v2 {
  background: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
  border-radius: 24px;
  padding: 32px 28px;
  border: 1px solid #e2e8f0;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: visible;
}

.product-card-v2::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.03) 0%, transparent 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.product-card-v2:hover::before {
  opacity: 1;
}

.product-card-v2:hover {
  transform: translateY(-12px);
  box-shadow: 0 25px 60px rgba(37, 99, 235, 0.15);
  border-color: #3b82f6;
}

/* DIY版 - 深色卡片 */
.product-card-v2.diy {
  background: linear-gradient(145deg, #1e293b 0%, #0f172a 100%);
  border: 2px solid #334155;
  box-shadow: 0 20px 60px rgba(30, 41, 59, 0.3);
  transform: scale(1.02);
}

.product-card-v2.diy::before {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, transparent 100%);
}

.product-card-v2.diy:hover {
  transform: scale(1.02) translateY(-12px);
  box-shadow: 0 30px 80px rgba(37, 99, 235, 0.25);
  border-color: #3b82f6;
}

/* 推荐徽章 */
.featured-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: #ffffff;
  padding: 6px 20px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

/* 产品卡片头部 */
.product-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.product-tag {
  font-size: 14px;
  font-weight: 600;
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.diy .product-tag {
  color: #94a3b8;
}

.product-price-tag {
  font-size: 28px;
  font-weight: 700;
  color: #1e293b;
}

.diy .product-price-tag {
  color: #ffffff;
}

/* 产品特性列表 */
.product-feature-list {
  list-style: none;
  margin-bottom: 20px;
  padding: 0;
}

.product-feature-list li {
  padding: 8px 0;
  color: #64748b;
  font-size: 14px;
  border-bottom: 1px solid #e2e8f0;
}

.product-feature-list li:last-child {
  border-bottom: none;
}

.diy .product-feature-list li {
  color: #cbd5e1;
  border-bottom-color: #334155;
}

/* DIY专属特性标签 */
.diy-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
  padding: 12px;
  background: rgba(51, 65, 85, 0.5);
  border-radius: 12px;
}

.diy-feature {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 500;
}

/* 产品图片区域 */
.product-img-v2 img {
  
  max-width: 70%;
  height: auto;
  display: block;
  border-radius: 12px;
  object-fit: contain;
  transition: transform 0.4s ease;
  margin: 0 auto;
  
}

/* hover 时图片缩放 */
.product-card-v2:hover .product-img-v2 img {
  transform: scale(1.05);
}

/* DIY版深色图片容器 */
.product-img-v2.diy {
  padding: 20px;
  /* background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%); */
  border-radius: 16px;
  margin-bottom: 20px;
}

.product-img-v2.diy img {
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.3));
}

/* 全宽按钮 */
.btn-block {
  width: 100%;
  margin-top: auto;
}

/* 技术参数区域 */
.tech-specs {
  background: #f8fafc;
  border-radius: 24px;
  padding: 40px;
  border: 1px solid #e2e8f0;
}

.tech-specs-title {
  text-align: center;
  font-size: 20px;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 16px;
}

.tech-specs-divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, #3b82f6, #60a5fa);
  margin: 0 auto 32px;
  border-radius: 2px;
}

.tech-specs-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 24px;
}

.tech-spec-item {
  text-align: center;
  padding: 20px 12px;
  background: #ffffff;
  border-radius: 16px;
  transition: all 0.3s ease;
}

.tech-spec-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.tech-spec-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  border-radius: 16px;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 auto 12px;
}

.tech-spec-label {
  font-size: 13px;
  color: #64748b;
  margin-bottom: 6px;
  font-weight: 500;
}

.tech-spec-value {
  font-size: 15px;
  font-weight: 700;
  color: #1e293b;
  line-height: 1.4;
}

.tech-spec-value small {
  font-size: 12px;
  font-weight: 400;
  color: #94a3b8;
}

/* 响应式 */
@media (max-width: 1024px) {
  .products-showcase {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .product-card-v2.diy {
    transform: scale(1);
    order: -1;
  }
  
  .product-card-v2.diy:hover {
    transform: translateY(-8px);
  }
  
  .tech-specs-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 640px) {
  .tech-specs-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .tech-specs {
    padding: 24px;
  }
}

/* 功能介绍区 */
.features-detail {
  background: #ffffff;
}

.feature-detail-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}

.feature-detail-item:last-child {
  margin-bottom: 0;
}

.feature-detail-item.reverse {
  direction: rtl;
}

.feature-detail-item.reverse > * {
  direction: ltr;
}

.feature-detail-text h3 {
  font-size: 24px;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 16px;
}

.feature-detail-text p {
  font-size: 15px;
  color: #64748b;
  line-height: 1.8;
  margin-bottom: 20px;
}

.feature-tags {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.tag {
  padding: 6px 14px;
  background: rgba(37, 99, 235, 0.1);
  color: #2563eb;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
}

.feature-detail-image {
  display: flex;
  justify-content: center;
}

.feature-img-placeholder {
  background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
  border-radius: 16px;
  
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.feature-img-placeholder img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  transition: transform 0.4s ease, filter 0.4s ease;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.1));
}

.feature-detail-item:hover .feature-img-placeholder img {
  transform: scale(1.05);
  filter: drop-shadow(0 8px 20px rgba(0, 0, 0, 0.15));
}

/* 使用场景区 */
.usecases {
  background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 50%, #f8fafc 100%);
}

.usecases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.usecase-card {
  background: #ffffff;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid #e2e8f0;
  position: relative;
}

.usecase-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #2563eb 0%, #3b82f6 100%);
  transform: scaleX(0);
  transition: transform 0.4s ease;
  transform-origin: left;
  z-index: 1;
}

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

.usecase-card:hover {
  transform: translateY(-12px) scale(1.03);
  box-shadow: 0 25px 50px rgba(37, 99, 235, 0.15);
  border-color: #3b82f6;
}

.usecase-image {
  /* padding: 24px; */
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  position: relative;
  overflow: hidden;
}

.usecase-image::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at center, transparent 60%, rgba(37, 99, 235, 0.05) 100%);
  pointer-events: none;
}

.usecase-img-placeholder {
  background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
  /* border-radius: 16px; */
   overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: transform 0.4s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 4 / 3;
}

.usecase-img-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease, filter 0.4s ease;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.1));
}

.usecase-card:hover .usecase-img-placeholder {
  transform: scale(1.05);
}

.usecase-card:hover .usecase-img-placeholder img {
  filter: drop-shadow(0 8px 20px rgba(0, 0, 0, 0.15));
}

.usecase-info {
  padding: 15px 24px 18px;
  text-align: center;
}

.usecase-info h3 {
  font-size: 17px;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 10px;
  transition: color 0.3s ease;
}

.usecase-card:hover .usecase-info h3 {
  color: #2563eb;
}

.usecase-info p {
  font-size: 14px;
  color: #64748b;
  line-height: 1.6;
}

/* 数据成果区 */
.data-results {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.data-results::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(37, 99, 235, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 70% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 50%);
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  50% { transform: translate(-2%, 2%) rotate(2deg); }
}

.data-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 36px;
  position: relative;
  z-index: 1;
}

.data-item {
  text-align: center;
  padding: 36px 24px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.data-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
  transition: left 0.6s ease;
}

.data-item:hover::before {
  left: 100%;
}

.data-item:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-8px);
  border-color: rgba(59, 130, 246, 0.4);
  box-shadow: 0 20px 40px rgba(37, 99, 235, 0.2);
}

.data-icon {
  margin-bottom: 18px;
  transition: transform 0.4s ease;
}

.data-item:hover .data-icon {
  transform: scale(1.15) rotate(5deg);
}

.data-number {
  font-size: 42px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 10px;
  background: linear-gradient(135deg, #ffffff 0%, #93c5fd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.data-label {
  font-size: 15px;
  color: #cbd5e1;
  margin-bottom: 10px;
  font-weight: 500;
}

.data-desc {
  font-size: 13px;
  color: #64748b;
  line-height: 1.5;
}

/* 技术架构区 */
.tech {
  background: #ffffff;
}

.tech-timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 0;
}

.timeline-line {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, #2563eb, #60a5fa);
  transform: translateX(-50%);
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 20px 40px;
  margin-bottom: 20px;
}

.timeline-left {
  left: 0;
  padding-right: 60px;
}

.timeline-right {
  left: 50%;
  padding-left: 60px;
}

.timeline-dot {
  position: absolute;
  top: 32px;
  width: 16px;
  height: 16px;
  background: #2563eb;
  border: 3px solid #ffffff;
  border-radius: 50%;
  box-shadow: 0 0 0 3px #2563eb;
  z-index: 1;
  animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulse {
  0%, 100% { box-shadow: 0 0 0 3px #2563eb; }
  50% { box-shadow: 0 0 0 6px rgba(37, 99, 235, 0.3); }
}

.timeline-left .timeline-dot {
  right: -8px;
}

.timeline-right .timeline-dot {
  left: -8px;
}

.timeline-content {
  background: #ffffff;
  padding: 28px 32px;
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid rgba(37, 99, 235, 0.05);
}

.timeline-content:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(37, 99, 235, 0.15);
  border-color: rgba(37, 99, 235, 0.2);
}

.timeline-title {
  font-size: 20px;
  font-weight: 700;
  color: #2563eb;
  margin-bottom: 10px;
  background: linear-gradient(135deg, #2563eb, #1e40af);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.timeline-desc {
  font-size: 14px;
  color: #64748b;
  line-height: 1.7;
  margin-bottom: 14px;
}

.timeline-specs {
  display: flex;
  gap: 20px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid #e2e8f0;
}

.spec-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.spec-label {
  font-size: 11px;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 500;
}

.spec-value {
  font-size: 14px;
  font-weight: 700;
  color: #1e40af;
  transition: color 0.3s ease;
}

.timeline-content:hover .spec-value {
  color: #2563eb;
}

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

.timeline-tags span {
  padding: 6px 14px;
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  font-size: 13px;
  color: #475569;
  transition: all 0.2s ease;
}

.timeline-tags span:hover {
  background: #eff6ff;
  border-color: #2563eb;
  color: #2563eb;
}

/* 移动端适配 */
@media (max-width: 768px) {
  .timeline-line {
    left: 20px;
  }
  
  .timeline-item {
    width: 100%;
    padding-left: 50px;
    padding-right: 20px;
  }
  
  .timeline-left,
  .timeline-right {
    left: 0;
    padding-left: 50px;
    padding-right: 20px;
  }
  
  .timeline-left .timeline-dot,
  .timeline-right .timeline-dot {
    left: 12px;
    right: auto;
  }
}

/* 案例与成果区 */
.cases {
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px;
}

.case-card {
  background: #ffffff;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid #e2e8f0;
  position: relative;
}
.case-badge {
    position: absolute;
    top: -15px;
    left: 20%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: #ffffff;
    padding: 20px 39px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    /* display: flex; */
    align-items: center;
    gap: 6px;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}



.case-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #2563eb, #3b82f6);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.case-card:hover::after {
  transform: scaleX(1);
}

.case-card:hover {
  transform: translateY(-12px) scale(1.03);
  box-shadow: 0 25px 50px rgba(37, 99, 235, 0.15);
  border-color: #3b82f6;
}

/* 案例标题标签 */
.case-badge {
  position: absolute;
    top: -13px;
    left: 80px;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: #ffffff;
    padding: 27px 26px 15px 39px;
    border-radius: 20px;
    font-size: 14px;
    /* font-weight: 600; */
    display: flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    z-index: 10;
}

.case-image {
  /* padding: 24px; */
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.case-img-placeholder {
  background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: transform 0.4s ease;

  display: flex;
  align-items: center;
  justify-content: center;
}

.case-img-placeholder img {
   max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  display: block;
  object-fit: contain;
  transition: transform 0.4s ease, filter 0.4s ease;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.1));
}

.case-card:hover .case-img-placeholder img {
  transform: scale(1.05);
  filter: drop-shadow(0 8px 20px rgba(0, 0, 0, 0.15));
}

.case-card:hover .case-img-placeholder {
  transform: scale(1.02);
}

/* 案例信息区域 */
.case-info {
  padding: 16px 28px 28px;
}

.case-info h3 {
  font-size: 19px;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 12px;
  transition: color 0.3s ease;
}

.case-card:hover .case-info h3 {
  color: #2563eb;
}

.case-info p {
  font-size: 14px;
  color: #64748b;
  line-height: 1.7;
}
.case-quote {
  position: relative;
  padding: 16px 0 12px;
  margin-top: auto;
  border-top: 1px solid #f1f5f9;
}

.case-quote::before {
  content: '"';
  position: absolute;
  top: 8px;
  left: 0;
  font-size: 32px;
  color: #cbd5e1;
  font-family: Georgia, serif;
  line-height: 1;
}

.case-quote p {
  font-size: 14px;
  color: #475569;
  line-height: 1.7;
  padding-left: 20px;
  margin-bottom: 8px;
}

.case-quote .quote-author {
  font-size: 12px;
  color: #94a3b8;
  padding-left: 130px;
  font-style: italic;
}

/* 价格与购买区 */
.pricing {
  background: #ffffff;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  max-width: 1000px;
  margin: 0 auto;
}

.pricing-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 20px;
  padding: 0;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.pricing-image {
  width: 100%;
  height: 180px;
  background: #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: 20px 20px 0 0;
}

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

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

.pricing-card > h3,
.pricing-card > .pricing-price,
.pricing-card > .pricing-features,
.pricing-card > .btn {
  padding: 0 32px;
}

.pricing-card > h3 {
  margin-top: 24px;
}

.pricing-card > .btn {
  margin-bottom: 32px;
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.1);
  border-color: #2563eb;
}

.pricing-card.featured {
  border: 2px solid #2563eb;
  transform: scale(1.05);
}

.pricing-card.featured .pricing-image {
  background: #1e293b;
}

.pricing-card.featured:hover {
  transform: scale(1.05) translateY(-8px);
}

.pricing-badge {
  display: inline-block;
  background: #2563eb;
  color: #ffffff;
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 8px;
}

.pricing-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 16px;
}

.pricing-price {
  font-size: 40px;
  font-weight: 700;
  color: #2563eb;
  margin-bottom: 24px;
}

.pricing-features {
  list-style: none;
  margin-bottom: 32px;
  text-align: left;
}

.pricing-features li {
  padding: 10px 0;
  color: #475569;
  font-size: 14px;
  border-bottom: 1px solid #f1f5f9;
}

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

/* === 数据成果展示区 === */
.data-showcase {
  margin-top: 60px;
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.data-row-top,
.data-row-middle,
.data-row-bottom {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.data-row-top {
  grid-template-columns: 1.2fr 1fr 1fr;
}

.data-row-middle {
  grid-template-columns: 1fr 1.5fr;
}

/* .data-row-bottom {
  grid-template-columns: repeat(3, 1fr);
} */

.data-card {
  background: #ffffff;
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  border: 1px solid #e2e8f0;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.data-card.animate-target {
  opacity: 0;
  transform: translateY(30px);
}

.data-card.animate-target.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.data-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.12);
  border-color: #3b82f6;
}

.data-card-title {
  font-size: 16px;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid #e2e8f0;
}

/* 项目成果卡片 */
.data-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.data-stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px 8px;
  background: #f8fafc;
  border-radius: 12px;
  transition: all 0.3s ease;
}

.data-stat-item:hover {
  background: #eff6ff;
  transform: scale(1.02);
}

.data-stat-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.1);
  margin-bottom: 12px;
}

.data-stat-label {
  font-size: 13px;
  color: #64748b;
  margin-bottom: 8px;
}

.data-stat-value {
  font-size: 24px;
  font-weight: 700;
  color: #2563eb;
}

.data-stat-unit {
  font-size: 14px;
  font-weight: 400;
  color: #64748b;
  margin-left: 2px;
}

.data-extra-stat {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
  padding: 12px 16px;
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  border-radius: 8px;
}

.data-extra-stat span {
  font-size: 13px;
  color: #64748b;
}

.data-extra-stat strong {
  font-size: 18px;
  color: #2563eb;
  font-weight: 700;
}

/* 销量增长趋势图表 */
.chart-container {
  display: flex;
  gap: 12px;
  height: 180px;
}

.chart-y-axis {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 8px 0;
}

.chart-y-axis span {
  font-size: 11px;
  color: #94a3b8;
  text-align: right;
  min-width: 36px;
}

.chart-area {
  flex: 1;
  position: relative;
  display: flex;
  flex-direction: column;
}

.line-chart {
  width: 100%;
  height: 140px;
}

.chart-labels {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  padding: 0 10%;
}

.chart-labels span {
  font-size: 12px;
  font-weight: 600;
  color: #2563eb;
}

.chart-x-axis {
  display: flex;
  justify-content: space-between;
  padding: 8px 10% 0;
  border-top: 1px solid #e2e8f0;
}

.chart-x-axis span {
  font-size: 12px;
  color: #64748b;
}

/* 用户满意度分布 */
.satisfaction-chart {
  display: flex;
  align-items: center;
  gap: 24px;
}

.donut-chart {
  position: relative;
  width: 120px;
  height: 120px;
  flex-shrink: 0;
}

.donut-chart svg {
  width: 100%;
  height: 100%;
}

.donut-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.donut-value {
  display: block;
  font-size: 22px;
  font-weight: 700;
  color: #2563eb;
}

.donut-label {
  display: block;
  font-size: 12px;
  color: #64748b;
}

.satisfaction-legend {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: #475569;
}

.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  flex-shrink: 0;
}

/* 学习效率提升反馈 */
.efficiency-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.efficiency-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  background: #f8fafc;
  border-radius: 10px;
  transition: all 0.3s ease;
}

.efficiency-item:hover {
  background: #eff6ff;
  transform: translateX(4px);
}

.efficiency-label {
  font-size: 14px;
  color: #475569;
}

.efficiency-value {
  font-size: 20px;
  font-weight: 700;
  color: #2563eb;
}

/* 用户真实评价 */
.reviews-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.review-item {
  padding: 16px;
  background: #f8fafc;
  border-radius: 12px;
  transition: all 0.3s ease;
}

.review-item:hover {
  background: #ffffff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.review-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 14px;
  font-weight: 600;
}

.review-stars {
  color: #fbbf24;
  font-size: 16px;
  letter-spacing: 2px;
}

.review-text {
  font-size: 14px;
  color: #334155;
  line-height: 1.6;
  margin-bottom: 8px;
}

.review-author {
  font-size: 12px;
  color: #94a3b8;
}

/* 四大核心技术 */
.data-card-wide {
  grid-column: span 1;
}

.tech-features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.tech-feature-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 20px 12px;
  background: #f8fafc;
  border-radius: 12px;
  transition: all 0.3s ease;
}

.tech-feature-item:hover {
  background: #eff6ff;
  transform: translateY(-4px);
}

.tech-feature-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #ffffff;
  border-radius: 14px;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.1);
  margin-bottom: 14px;
}

.tech-feature-item h5 {
  font-size: 14px;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 8px;
}

.tech-feature-item p {
  font-size: 12px;
  color: #64748b;
  line-height: 1.5;
}

/* 使用场景展示 */
.scene-gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.scene-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.scene-img {
  width: 100%;
  aspect-ratio: 1;
  background: #f1f5f9;
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.scene-img:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

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

.scene-item span {
  font-size: 13px;
  color: #64748b;
}

/* 产品展示 */
.product-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.product-view {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.product-view-img {
  width: 100%;
  aspect-ratio: 1;
  background: #f8fafc;
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.product-view-img:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.product-view-img img {
  max-width: 80%;
  max-height: 80%;
  object-fit: contain;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.1));
}

.product-view span {
  font-size: 13px;
  color: #475569;
  font-weight: 500;
}

.product-dimension {
  font-size: 12px;
  color: #94a3b8;
}

/* 数据展示区响应式 */
@media (max-width: 1024px) {
  .data-row-top {
    grid-template-columns: 1fr;
  }
  
  .data-row-middle {
    grid-template-columns: 1fr;
  }
  
  .data-row-bottom {
    grid-template-columns: 1fr;
  }
  
  .tech-features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .scene-gallery {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .data-stats-grid {
    grid-template-columns: 1fr;
  }
  
  .satisfaction-chart {
    flex-direction: column;
  }
  
  .tech-features-grid {
    grid-template-columns: 1fr;
  }
  
  .scene-gallery {
    grid-template-columns: 1fr 1fr;
  }
  
  .product-gallery {
    grid-template-columns: 1fr;
  }
}

/* 页脚 */
.footer {
  background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
  padding: 60px 0 0;
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, #3b82f6 50%, transparent 100%);
}

/* Footer 四栏网格 */
.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  max-width: 1100px;
  margin: 0 auto;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-col-title {
  font-size: 16px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}

.footer-col-line {
  width: 36px;
  height: 3px;
  background: linear-gradient(90deg, #2563eb 0%, #3b82f6 100%);
  margin-bottom: 22px;
  border-radius: 2px;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.footer-col-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-col-list li {
  font-size: 14px;
  color: #94a3b8;
  line-height: 1.6;
}

.footer-col-list a {
  color: #94a3b8;
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
  display: inline-block;
}

.footer-col-list a:hover {
  color: #ffffff;
  transform: translateX(4px);
}

/* Footer 社交图标 */
.footer-social {
  display: flex;
  gap: 14px;
  margin-top: 24px;
}

.footer-social-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #94a3b8;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-social-icon:hover {
  background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
  color: #ffffff;
  transform: translateY(-4px) scale(1.1);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.4);
  border-color: transparent;
}

/* Footer 版权栏 */
.footer-copyright-bar {
  padding: 28px 0;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-copyright-bar p {
  font-size: 13px;
  color: #64748b;
  letter-spacing: 0.5px;
}

.footer-copyright-bar p strong {
  color: #94a3b8;
  font-weight: 500;
}

/* 响应式 */
@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* 回到顶部按钮 */
.back-to-top {
  position: fixed;
  bottom: 36px;
  right: 36px;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
  color: #ffffff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 24px rgba(37, 99, 235, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.8);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.back-to-top:hover {
  background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 100%);
  transform: translateY(-6px) scale(1.1);
  box-shadow: 0 10px 32px rgba(37, 99, 235, 0.5);
}

.back-to-top:active {
  transform: translateY(-2px) scale(1.05);
}

/* 动画 */
.animate-target {
  opacity: 0;
  transform: translateY(60px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* 从左滑入 */
.animate-left {
  opacity: 0;
  transform: translateX(-80px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-left.visible {
  opacity: 1;
  transform: translateX(0);
}

/* 从右滑入 */
.animate-right {
  opacity: 0;
  transform: translateX(80px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* 缩放弹入 */
.animate-scale {
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-scale.visible {
  opacity: 1;
  transform: scale(1);
}

/* 交错延迟 */
.animate-delay-1 { transition-delay: 0.1s; }
.animate-delay-2 { transition-delay: 0.2s; }
.animate-delay-3 { transition-delay: 0.3s; }
.animate-delay-4 { transition-delay: 0.4s; }

/* Section 标题动画 */
.section-header {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

.section-header.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Hero 入场动画 */
@keyframes heroFadeIn {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroSlideRight {
  from {
    opacity: 0;
    transform: translateX(60px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.hero-content {
  animation: heroFadeIn 1s cubic-bezier(0.16, 1, 0.3, 1) 0.2s both;
}

.hero-image-area {
  animation: heroSlideRight 1s cubic-bezier(0.16, 1, 0.3, 1) 0.4s both;
}

.hero-product-img {
  animation: float 4s ease-in-out infinite;
  animation-delay: 1.4s;
  filter: drop-shadow(0 20px 40px rgba(37, 99, 235, 0.2));
  transition: filter 0.3s ease;
}

.hero-product-img:hover {
  filter: drop-shadow(0 25px 50px rgba(37, 99, 235, 0.35));
}

.hero-features {
  animation: heroFadeIn 1s cubic-bezier(0.16, 1, 0.3, 1) 0.6s both;
}

.hero-buttons {
  animation: heroFadeIn 1s cubic-bezier(0.16, 1, 0.3, 1) 0.8s both;
}

/* 响应式 */
@media (max-width: 1024px) {
  .features-grid,
  .usecases-grid,
  .data-grid,
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

  .feature-detail-item,
  .feature-detail-item.reverse {
    grid-template-columns: 1fr;
    direction: ltr;
  }

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

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.95);
    flex-direction: column;
    padding: 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  }

 .nav-menu.active {
        left: 70%;
        width: 30%;
        display: flex;
    }

  .mobile-menu-toggle {
    display: flex;
  }

  .nav-actions .btn {
    display: none;
  }

  .hero-title {
    font-size: 36px;
  }

  .section-header h2 {
    font-size: 28px;
  }

  .features-grid,
  .products-grid,
  .usecases-grid,
  .data-grid,
  .cases-grid,
  .pricing-grid,
  .team-grid {
    grid-template-columns: 1fr;
  }

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

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

  .pricing-card.featured {
    transform: none;
  }

  .pricing-card.featured:hover {
    transform: translateY(-8px);
  }
}

.case-card .case-badge {
  position: absolute;
    top: 1px;
    left: -1px;
    transform: none;
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: #fff;
    padding: 12px 29px 13px 29px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    z-index: 5;
    box-shadow: 0 4px 12px rgba(37, 99, 235, .28);
}

/* ---- 统一移动端菜单行为 (≤992px) ---- */
@media (max-width: 992px) {
  .mobile-menu-toggle { display: flex !important; }
  .nav-actions .btn { display: none !important; }

  /* 修复原有 left:70% width:30% 的 bug，改为全宽下拉 */
  .nav-menu {
     left: auto !important;
    right: 0 !important;
    width: 280px !important;
    max-width: 80vw !important;
    border-radius: 0 0 0 16px !important;
  }
  .nav-menu.active {
   left: auto !important;
    right: 0 !important;
    width: 160px !important;
    max-width: 80vw !important;
    border-radius: 0 0 0 16px !important;
  }
  .nav-menu .nav-link {
    color: rgba(255,255,255,.82) !important;
    padding: 14px 16px !important;
    font-size: 16px;
    border-radius: 12px;
  }
  .nav-menu .nav-link:hover,
  .nav-menu .nav-link.active {
    background: rgba(37,99,235,.18);
    color: #fff !important;
  }
  .nav-menu .nav-link::after { display: none; }
}

@media (max-width: 1024px) {
  /* 容器 & 节奏 */
  .container { padding: 0 20px; }
  section { padding: 64px 0; }
  .section-header { margin-bottom: 36px; }
  .section-header h2 { font-size: 30px; }
  .section-subtitle { font-size: 16px; margin-top: 20px; }

  /* 导航 */
  .navbar .container { height: 64px; }

  /* Hero */
  .hero { padding: 100px 0 56px; min-height: auto; }
  .hero-content { grid-template-columns: 1fr; gap: 36px; text-align: center; }
  .hero-title { font-size: 40px; }
  .hero-subtitle { font-size: 18px; }
  .hero-features { justify-content: center; }
  .hero-slogan { font-size: 17px; padding-left: 0; text-align: center; }
  .hero-slogan::before { display: none; }

  .hero-highlights { 
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    justify-content: center;
  }
  .highlight-item { flex-direction: column; text-align: center; padding: 16px 12px; }
  .highlight-icon { width: 44px; height: 44px; }

  .hero-buttons { justify-content: center; flex-wrap: wrap; }
  .hero-product-image { max-width: 340px; margin: 0 auto; }
  .product-placeholder { width: 100%; padding: 16px; }
  .product-real-image { width: 100%; max-width: 100%; }

  /* 核心功能 - 2列 */
  .features-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .feature-card { padding: 26px 20px; }

  /* 产品中心 - 单列堆叠，DIY 置顶 */
  .products-showcase {
    grid-template-columns: 1fr;
    gap: 22px;
    max-width: 420px;
    margin: 0 auto 40px;
  }
  .product-card-v2 { padding: 26px 22px; }
  .product-card-v2.diy { transform: none; order: -1; }
  .product-card-v2.diy:hover { transform: translateY(-6px); }
  .product-price-tag { font-size: 26px; }
  .product-img-v2 img { max-width: 62%; }

  /* 技术参数 - 3列 */
  .tech-specs { padding: 28px 20px; }
  .tech-specs-grid { grid-template-columns: repeat(3, 1fr); gap: 16px; }

  /* 功能介绍 - 单列上下 */
  .feature-detail-item,
  .feature-detail-item.reverse {
    grid-template-columns: 1fr;
    gap: 28px;
    direction: ltr;
    margin-bottom: 48px;
    text-align: center;
  }
  .feature-tags { justify-content: center; }
  .feature-img-placeholder { max-width: 320px; margin: 0 auto; }

  /* 使用场景 - 2列 */
  .usecases-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }

  /* 数据成果 */
  .data-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .data-number { font-size: 32px; }
  .data-results { padding: 60px 0; }

  /* 技术架构 - 单列时间线 */
  .timeline-line { left: 20px; }
  .timeline-item,
  .timeline-left,
  .timeline-right {
    width: 100%; left: 0;
    padding-left: 52px; padding-right: 16px;
  }
  .timeline-left .timeline-dot,
  .timeline-right .timeline-dot { left: 12px; right: auto; }
  .timeline-content { padding: 20px; }

  /* 案例 - 单列 */
  .cases-grid { grid-template-columns: 1fr; gap: 22px; max-width: 420px; margin: 0 auto; }

  /* 数据展示区 */
  .data-row-top,
  .data-row-middle,
  .data-row-bottom { grid-template-columns: 1fr; gap: 18px; }
  .tech-features-grid { grid-template-columns: repeat(2, 1fr); }

  /* Footer */
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .footer { padding: 44px 0 0; }
}

@media (max-width: 768px) {
  .container { padding: 0 18px; }
  section { padding: 52px 0; }

  /* 导航 - 56px 高 */
  .navbar .container { height: 56px; }
  .nav-menu { top: 56px; max-height: calc(100dvh - 56px); }

  /* Hero */
  .hero { padding: 80px 0 44px; }
  .hero-title { font-size: 32px; line-height: 1.2; }
  .hero-subtitle { font-size: 16px; }
  .hero-features span { font-size: 12.5px; padding: 6px 13px; }
  .hero-slogan { font-size: 15px; margin-bottom: 22px; }

  .hero-highlights {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .highlight-item {
    flex-direction: row;
    text-align: left;
    padding: 13px 16px;
  }
  .highlight-icon { width: 40px; height: 40px; }

  .hero-buttons { flex-direction: column; gap: 12px; width: 100%; }
  .hero-buttons .btn {
    width: 100%;
    padding: 15px 20px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 12px;
  }

  .hero-product-image { max-width: 280px; }

  /* 标题 */
  .section-header h2 { font-size: 26px; }
  .section-header h2::after { width: 52px; }

  /* 核心功能 - 手机单列，卡片更紧凑 */
  .features-grid { grid-template-columns: 1fr; gap: 14px; }
  .feature-card { padding: 22px 20px; text-align: left; }
  .feature-icon { margin: 0 0 14px 0; width: 52px; height: 52px; border-radius: 14px; }
  .feature-card h3 { font-size: 17px; margin-bottom: 8px; }
  .feature-card p { font-size: 14px; }

  /* 产品卡片 */
  .products-showcase { max-width: 100%; }
  .product-card-v2 { padding: 22px 20px; border-radius: 20px; }
  .product-price-tag { font-size: 24px; }
  .product-feature-list li { font-size: 14px; padding: 8px 0; }
  .product-img-v2 img { max-width: 56%; }
  .product-card-v2 .btn { padding: 14px; font-size: 15.5px; font-weight: 600; border-radius: 12px; }

  /* 技术参数 - 2列 */
  .tech-specs-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .tech-specs { padding: 22px 16px; border-radius: 20px; }
  .tech-spec-item { padding: 16px 10px; border-radius: 14px; }

  /* 功能介绍 */
  .feature-detail-text h3 { font-size: 20px; }
  .feature-detail-text p { font-size: 14.5px; }
  .tag { font-size: 12.5px; padding: 5px 12px; border-radius: 100px; }
  .feature-img-placeholder { max-width: 280px; }

  /* 使用场景 */
  .usecases-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .usecase-info { padding: 12px 14px 15px; }
  .usecase-info h3 { font-size: 15px; }
  .usecase-info p { font-size: 12.5px; }

  /* 数据成果 */
  .data-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .data-item { padding: 20px 14px; border-radius: 16px; }
  .data-number { font-size: 28px; }

  /* 案例卡片 - 修复 badge */
  .case-card { border-radius: 18px; }
  .case-info { padding: 16px 18px 20px; }
  .case-info h3 { font-size: 17px; }
  .case-quote p { font-size: 13.5px; padding-left: 18px; }
  .case-quote .quote-author { font-size: 12px; padding-left: 18px; }

  /* 数据展示卡 */
  .data-card { padding: 18px 16px; border-radius: 16px; }
  .data-stats-grid { grid-template-columns: 1fr; gap: 10px; }
  .data-stat-item {
    flex-direction: row; justify-content: flex-start;
    gap: 12px; padding: 12px 14px; align-items: center;
  }
  .data-stat-icon { width: 40px; height: 40px; margin-bottom: 0; }
  .data-stat-label { flex: 1; margin-bottom: 0; }
  .data-stat-value { font-size: 20px; }

  .satisfaction-chart { flex-direction: column; gap: 16px; align-items: center; }
  .tech-features-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .product-gallery { grid-template-columns: repeat(3, 1fr); }

  /* Footer 2列 */
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }

  /* 回到顶部 */
  .back-to-top {
    width: 46px; height: 46px;
    bottom: 20px; right: 16px;
  }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  section { padding: 44px 0; }

  .hero-title { font-size: 28px; }
  .hero-subtitle { font-size: 15px; }

  .hero-highlights { grid-template-columns: 1fr; }
  
  .section-header h2 { font-size: 24px; }

  /* 功能卡片保持单列 */
  .feature-card { padding: 20px 16px; }

  /* 技术参数保持 2 列 */
  .tech-specs-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .tech-spec-icon { width: 40px; height: 40px; }
  .tech-spec-value { font-size: 13.5px; }

  /* 使用场景 2 列 */
  .usecases-grid { gap: 12px; }

  /* 数据卡片 */
  .data-grid { gap: 12px; }
  .data-number { font-size: 24px; }

  /* 核心技术 2 列 */
  .tech-features-grid { grid-template-columns: 1fr 1fr; }

  /* 产品展示 3列保持 */
  .product-gallery { grid-template-columns: repeat(3, 1fr); gap: 10px; }

  /* Footer 保持 2 列，小屏才单列 */
  .footer-grid { grid-template-columns: 1fr 1fr; }

  .btn { padding: 13px 20px; font-size: 15px; }
}

@media (max-width: 380px) {
  .hero-title { font-size: 26px; }
  .features-grid,
  .usecases-grid,
  .data-grid { grid-template-columns: 1fr; }
  .usecases-grid { grid-template-columns: 1fr 1fr; }
  .data-grid { grid-template-columns: 1fr 1fr; }
  .tech-features-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .product-gallery { grid-template-columns: repeat(2, 1fr); }
}

/* ---- 移动端触控优化 ---- */
@media (max-width: 768px) {
  .btn { min-height: 44px; }
  /* 减少 hover 抖动，仅保留轻微阴影 */
  .feature-card:hover,
  .product-card-v2:hover,
  .case-card:hover,
  .usecase-card:hover {
    transform: translateY(-4px) !important;
  }
}

/* ---- 汉堡菜单动画（保留原有） ---- */
.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}
.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---- 移动端 Hero 图片置顶覆盖 ---- */
@media (max-width: 1024px) {
  .hero-content {
    display: flex !important;
    flex-direction: column !important;
  }
  .hero-image { order: -1 !important; }
  .hero-text { order: 0 !important; }
}

/* ---- 移动端隐藏 Hero 次要按钮 ---- */
@media (max-width: 768px) {
  .hero-buttons .btn-secondary {
    display: none !important;
  }
  /* 主按钮拉满宽度，更突出 */
  .hero-buttons .btn-primary {
    width: 100% !important;
  }
}


/* ---- 移动端 Hero highlights 布局：上2下1居中，保持原有样式 ---- */
@media (max-width: 768px) {
  .hero-highlights {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 12px !important;
  }
  /* 第三项跨两列居中，宽度与上面两项单卡相近 */
  .hero-highlights .highlight-item:nth-child(3) {
    grid-column: 1 / -1;
    justify-self: center;
    width: calc(50% - 6px);
    min-width: 160px;
  }
}
/* 超小屏恢复单列，避免过挤 */
@media (max-width: 380px) {
  .hero-highlights {
    grid-template-columns: 1fr !important;
  }
  .hero-highlights .highlight-item:nth-child(3) {
    grid-column: auto;
    width: 100%;
    min-width: auto;
  }
}

/* ---- Hero highlights 三个卡片等宽等高修正 ---- */
@media (max-width: 768px) {
  .hero-highlights .highlight-item,
  .hero-highlights .highlight-item:nth-child(3) {
    width: calc((100% - 12px) / 2) !important;
    min-width: 0 !important;
    max-width: none !important;
    box-sizing: border-box;
    min-height: 72px;
    align-self: stretch;
  }
  .hero-highlights .highlight-item:nth-child(3) {
    grid-column: 1 / -1;
    justify-self: center;
  }
}
@media (max-width: 380px) {
  .hero-highlights .highlight-item,
  .hero-highlights .highlight-item:nth-child(3) {
    width: 100% !important;
    min-height: auto;
  }
}

/* ---- Hero highlights 三个卡片强制等宽等高 ---- */
@media (max-width: 768px) {
  .hero-highlights {
    grid-template-columns: 1fr 1fr !important;
    align-items: stretch !important;
  }
  .hero-highlights .highlight-item,
  .hero-highlights .highlight-item:nth-child(3) {
    width: calc((100% - 12px) / 2) !important;
    height: 72px !important;
    min-height: 72px !important;
    max-height: 72px !important;
    box-sizing: border-box !important;
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    justify-content: flex-start !important;
    overflow: hidden;
  }
  .hero-highlights .highlight-item:nth-child(3) {
    grid-column: 1 / -1;
    justify-self: center;
  }
  /* 文字区允许换行但不撑高卡片 */
  .hero-highlights .highlight-text {
    flex: 1;
    min-width: 0;
    overflow: hidden;
  }
  .hero-highlights .highlight-text h4,
  .hero-highlights .highlight-text p {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
}
@media (max-width: 380px) {
  .hero-highlights,
  .hero-highlights .highlight-item,
  .hero-highlights .highlight-item:nth-child(3) {
    grid-template-columns: 1fr !important;
    width: 100% !important;
    grid-column: auto !important;
    justify-self: stretch !important;
  }
}

/* ---- Hero highlights: 移动端改为纵向一列，三个卡片等宽 ---- */
@media (max-width: 768px) {
  .hero-highlights {
    display: flex !important;
    flex-direction: column !important;
    gap: 12px !important;
    background: transparent !important;
    padding: 0 !important;
    border-radius: 0 !important;
  }
  .hero-highlights .highlight-item,
  .hero-highlights .highlight-item:nth-child(3) {
    width: 100% !important;
    height: auto !important;
    min-height: 64px !important;
    max-height: none !important;
    grid-column: auto !important;
    justify-self: stretch !important;
    /* 恢复原始卡片样式 */
    flex-direction: row !important;
    align-items: center !important;
    text-align: left !important;
    background: rgba(255,255,255,0.7) !important;
    border: 1px solid #e2e8f0 !important;
    border-radius: 14px !important;
    box-shadow: 0 2px 12px rgba(15,23,42,.04) !important;
    padding: 14px 16px !important;
  }
  .hero-highlights .highlight-icon {
    display: flex !important;
    width: 44px !important;
    height: 44px !important;
  }
  .hero-highlights .highlight-text h4 {
    font-size: 15px !important;
    font-weight: 600 !important;
    color: #1e293b !important;
    letter-spacing: 0 !important;
  }
  .hero-highlights .highlight-text p {
    font-size: 13px !important;
    font-weight: 400 !important;
    color: #64748b !important;
    text-transform: none !important;
    letter-spacing: 0 !important;
  }
}

@media (max-width: 768px) {
  .hero-highlights {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 10px !important;
    background: transparent !important;
    padding: 0 !important;
    border-radius: 0 !important;
  }
  .hero-highlights .highlight-item,
  .hero-highlights .highlight-item:nth-child(3) {
    width: 100% !important;
    height: 100% !important;
    min-height: 108px !important;
    max-height: none !important;
    grid-column: auto !important;
    justify-self: stretch !important;
    /* 紧凑的纵向卡片，适合三列 */
    flex-direction: column !important;
    align-items: center !important;
    text-align: center !important;
    padding: 14px 10px !important;
    background: rgba(255,255,255,0.72) !important;
    border: 1px solid #e2e8f0 !important;
    border-radius: 14px !important;
    box-shadow: 0 2px 12px rgba(15,23,42,.04) !important;
  }
  .hero-highlights .highlight-icon {
    display: flex !important;
    width: 36px !important;
    height: 36px !important;
    margin-bottom: 8px !important;
  }
  .hero-highlights .highlight-icon svg {
    width: 18px !important;
    height: 18px !important;
  }
  .hero-highlights .highlight-text h4 {
    font-size: 13px !important;
    font-weight: 600 !important;
    color: #1e293b !important;
    margin-bottom: 2px !important;
    letter-spacing: 0 !important;
  }
  .hero-highlights .highlight-text p {
    font-size: 11px !important;
    font-weight: 400 !important;
    color: #64748b !important;
    text-transform: none !important;
    letter-spacing: 0 !important;
    line-height: 1.4 !important;
  }
}
@media (max-width: 380px) {
  .hero-highlights {
    grid-template-columns: 1fr 1fr !important;
  }
  .hero-highlights .highlight-item:nth-child(3) {
    grid-column: 1 / -1 !important;
    justify-self: center !important;
    width: calc((100% - 10px) / 2) !important;
  }
}