/* 设计令牌 - 基于 Vue 应用风格 */
:root {
  /* 主色调 - 深灰色系 */
  --primary-dark: #3d3d3d;
  --primary-darker: #2d2d2d;
  --primary-lighter: #4a4a4a;
  --accent-color: #5d5d5d;
  
  /* 背景色 */
  --bg-dark: #3D3732;
  --bg-gradient-start: #3D3732;
  --bg-gradient-end: #2d2722;
  --bg-light: #FFFFFF;
  --bg-gray: #f5f5f5;
  --bg-card: rgba(255, 255, 255, 0.95);
  
  /* 文字色 */
  --text-primary: #333333;
  --text-secondary: #666666;
  --text-tertiary: #999999;
  --text-light: #FFFFFF;
  
  /* 间距 */
  --section-padding: 5rem 0;
  --container-padding: 0 1rem;
  
  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  /* 阴影 */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 12px 32px rgba(0, 0, 0, 0.2);
  
  /* 渐变 */
  --gradient-primary: linear-gradient(135deg, #3d3d3d, #4a4a4a);
  --gradient-dark: linear-gradient(135deg, #3D3732 0%, #2d2722 100%);
  --gradient-overlay: linear-gradient(135deg, rgba(61, 55, 50, 0.9), rgba(45, 39, 34, 0.95));
}

/* 全局样式 */
* {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* 顶部公告横幅 */
.top-announcement-bar {
  background-color: #362F29;
  color: #F9F5EF;
  font-size: 1.05rem;
  line-height: 1.6;
  padding: 0.4rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
  position: relative;
  z-index: 1040; /* 高于 navbar 的默认层级 */
}

.top-announcement-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  overflow: hidden;
  white-space: nowrap;
}

.top-announcement-label {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.1rem 0.6rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: #FFE2B7;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.top-announcement-marquee {
  flex: 1;
  overflow: hidden;
}

.top-announcement-text {
  display: inline-block;
  padding-left: 100%;
  animation: announcement-marquee 28s linear infinite;
  opacity: 0.95;
}

@keyframes announcement-marquee {
  0% {
    -webkit-transform: translateX(0);
    transform: translateX(0);
  }
  100% {
    -webkit-transform: translateX(-100%);
    transform: translateX(-100%);
  }
}

@media (max-width: 768px) {
  .top-announcement-bar {
    font-size: 0.8rem;
    padding: 0.3rem 0;
  }

  .top-announcement-inner {
    padding: 0 0.75rem;
    gap: 0.5rem;
  }

  .top-announcement-label {
    display: none;
  }

  .top-announcement-text {
    padding-left: 100%;
    animation-duration: 24s;
  }
}

/* 导航栏 */
.navbar {
  background: var(--gradient-dark) !important;
  padding: 1.25rem 0;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  -webkit-box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* 毛玻璃效果降级方案 */
@supports not (backdrop-filter: blur(10px)) {
  .navbar {
    background: #3D3732 !important;
  }
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-light) !important;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
}

.navbar-brand:hover {
  -webkit-transform: scale(1.05);
  -moz-transform: scale(1.05);
  -ms-transform: scale(1.05);
  transform: scale(1.05);
}

.nav-link {
  color: rgba(255, 255, 255, 0.85) !important;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
  padding: 0.5rem 1rem !important;
}

.nav-link:hover {
  color: var(--text-light) !important;
  -webkit-transform: translateY(-2px);
  transform: translateY(-2px);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--text-light);
  transition: all 0.3s ease;
  -webkit-transform: translateX(-50%);
  transform: translateX(-50%);
}

.nav-link:hover::after {
  width: 80%;
}

.navbar .btn-primary {
  background: var(--gradient-primary) !important;
  border: none !important;
  padding: 0.6rem 1.5rem !important;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(61, 61, 61, 0.3);
  transition: all 0.3s ease;
}

.navbar .btn-primary:hover {
  -webkit-transform: translateY(-2px);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(61, 61, 61, 0.4);
}

/* Hero 区域 */
.hero-section {
  background: var(--gradient-dark);
  color: var(--text-light);
  min-height: 85vh;
  display: flex;
  align-items: center;
  padding: 6rem 0;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 30%, rgba(80, 70, 60, 0.2) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(70, 60, 50, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.hero-badge {
  display: inline-block;
  background: var(--gradient-primary);
  color: white;
  padding: 0.65rem 1.8rem;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(10px);
}

.hero-title {
  font-size: 5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 2rem;
  white-space: normal;
  color: #ffffff;
  text-shadow: 
    0 1px 0 rgba(255, 255, 255, 0.4),
    0 2px 0 rgba(0, 0, 0, 0.2),
    0 3px 0 rgba(0, 0, 0, 0.15),
    0 4px 0 rgba(0, 0, 0, 0.1),
    0 5px 0 rgba(0, 0, 0, 0.05),
    0 6px 1px rgba(0, 0, 0, 0.1),
    0 8px 8px rgba(0, 0, 0, 0.2),
    0 12px 15px rgba(0, 0, 0, 0.3),
    0 20px 30px rgba(0, 0, 0, 0.4);
  max-width: 100%;
  word-wrap: break-word;
}

.hero-description {
  font-size: 1.5rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 3rem;
  line-height: 1.85;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.hero-buttons {
  margin-bottom: 2rem;
}

/* 放大首屏按钮尺寸 */
.hero-buttons .btn {
  padding: 0.9rem 1.6rem;
  font-size: 1.125rem;
}

/* 限制文案行宽，贴近设计图列宽 */
.hero-content {
  width: 100%;
  margin: 0 auto;
  text-align: center;
}

.hero-trust {
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
}

.hero-image img {
  border-radius: var(--radius-xl);
  box-shadow: 
    0 20px 60px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(255, 255, 255, 0.1);
  width: 100%;
  height: auto;
  max-height: 656px;
  object-fit: cover;
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.hero-image img:hover {
  -webkit-transform: scale(1.02) translateY(-8px);
  transform: scale(1.02) translateY(-8px);
  box-shadow: 
    0 25px 70px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.15);
}

.hero-buttons {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}

.download-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  position: relative;
}

.download-item .btn {
  background: rgba(255, 255, 255, 0.95) !important;
  color: #3d3d3d !important;
  border: 2px solid rgba(255, 255, 255, 0.3) !important;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2rem !important;
  font-weight: 600;
  font-size: 1.1rem !important;
  border-radius: var(--radius-lg) !important;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(10px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.download-item .btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transition: left 0.5s ease;
}

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

.download-item .btn:hover {
  background: rgba(255, 255, 255, 1) !important;
  color: #2d2d2d !important;
  border-color: rgba(255, 255, 255, 0.5) !important;
  -webkit-transform: translateY(-4px) scale(1.02);
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

.download-item .btn:active {
  -webkit-transform: translateY(-2px) scale(1.01);
  transform: translateY(-2px) scale(1.01);
}

.download-item .btn img {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
  transition: transform 0.3s ease;
}

.download-item .btn:hover img {
  -webkit-transform: scale(1.1) rotate(5deg);
  transform: scale(1.1) rotate(5deg);
}

.hero-buttons img {
  width: 30px;
  height: 30px;
  vertical-align: middle;
  flex-shrink: 0;
}

/* 客户 Logo 区域 */
.client-logos {
  background-color: var(--bg-gray);
  border-top: 1px solid #E5E7EB;
  border-bottom: 1px solid #E5E7EB;
}

.logo-placeholder {
  color: var(--text-secondary);
  font-weight: 500;
  padding: 1rem;
}

/* 关于区域 */
.about-section {
  padding: var(--section-padding);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.section-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.subsection-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.subsection-description {
  color: var(--text-secondary);
  line-height: 1.6;
}

.team-image img {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  width: 100%;
  height: 200px;
  object-fit: cover;
}

/* 统计数据 */
.stat-number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary-blue);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  color: var(--text-secondary);
  font-weight: 500;
}

/* 专业领域区域 */
.expertise-section {
  background-color: var(--bg-orange);
  padding: var(--section-padding);
}

.section-badge {
  display: inline-block;
  color: var(--primary-blue);
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.1rem;
}

.expertise-cards {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.expertise-card {
  background: white;
  padding: 2rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--primary-blue);
}

.expertise-card h5 {
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.expertise-card p {
  color: var(--text-secondary);
  margin: 0;
}

.progress-bar {
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-blue) 0%, var(--primary-orange) 100%);
  border-radius: 2px;
  margin-bottom: 1rem;
}

/* 服务区域 */
.services-section {
  background-color: var(--bg-blue);
  padding: var(--section-padding);
}

.service-card {
  background: white;
  padding: 2rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  height: 100%;
}

.service-card:hover {
  -webkit-transform: translateY(-4px);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.service-icon {
  width: 4rem;
  height: 4rem;
  background: var(--primary-blue);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  color: white;
  font-size: 1.5rem;
}

.service-card h5 {
  font-weight: 600;
  margin-bottom: 1rem;
}

.service-card p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.service-link {
  color: var(--primary-blue);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

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

/* 流程区域 */
.process-section {
  padding: var(--section-padding);
}

.process-card {
  background: white;
  padding: 2rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  text-align: center;
  height: 100%;
  border-top: 4px solid var(--primary-orange);
}

.process-number {
  width: 3rem;
  height: 3rem;
  background: var(--primary-orange);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
  margin: 0 auto 1.5rem;
}

.process-card h5 {
  font-weight: 600;
  margin-bottom: 1rem;
}

.process-card p {
  color: var(--text-secondary);
  margin: 0;
}

/* 客户评价区域 - 增强立体感 */
.testimonials-section {
  background: 
    linear-gradient(180deg, rgba(245, 245, 245, 0.95) 0%, rgba(255, 255, 255, 0.98) 100%),
    radial-gradient(circle at 30% 50%, rgba(61, 61, 61, 0.03) 0%, transparent 60%),
    radial-gradient(circle at 70% 50%, rgba(61, 61, 61, 0.02) 0%, transparent 60%);
  padding: var(--section-padding);
  position: relative;
  overflow: hidden;
}

.testimonials-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(80, 70, 60, 0.15), transparent);
}

/* 添加底部阴影增强深度 */
.testimonials-section::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  -webkit-transform: translateX(-50%);
  transform: translateX(-50%);
  width: 80%;
  height: 80px;
  background: radial-gradient(ellipse at center, rgba(61, 61, 61, 0.08) 0%, transparent 70%);
  filter: blur(20px);
  pointer-events: none;
}

.client-avatars img {
  width: 2.5rem;
  height: 2.5rem;
  border: 2px solid white;
  box-shadow: var(--shadow-sm);
}

/* Features Section - 功能展示区 */
.features-section {
  background: linear-gradient(180deg, var(--bg-gradient-end) 0%, var(--bg-gradient-start) 50%, var(--bg-gradient-end) 100%);
  padding: 6rem 0;
  position: relative;
  overflow: hidden;
}

.features-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(80, 70, 60, 0.3), transparent);
}

.features-section .section-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.6rem 1.5rem;
  background: #3d3d3d;
  color: white;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  flex-shrink: 0;
  height: fit-content;
}

.features-section .section-title {
  color: #ffffff;
  font-weight: 700;
  font-size: 2.8rem;
  text-shadow: 
    0 1px 0 rgba(255, 255, 255, 0.3),
    0 2px 0 rgba(0, 0, 0, 0.15),
    0 3px 0 rgba(0, 0, 0, 0.12),
    0 4px 0 rgba(0, 0, 0, 0.08),
    0 5px 0 rgba(0, 0, 0, 0.05),
    0 6px 8px rgba(0, 0, 0, 0.2),
    0 10px 15px rgba(0, 0, 0, 0.3);
  line-height: 1;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
}

.features-section .section-description {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.2rem;
  max-width: 700px;
  margin: 0 auto;
  text-shadow: 
    0 1px 0 rgba(255, 255, 255, 0.1),
    0 2px 4px rgba(0, 0, 0, 0.25),
    0 4px 8px rgba(0, 0, 0, 0.15);
}

/* Feature Card - 功能卡片 */
.feature-card {
  background: var(--bg-card);
  padding: 2.5rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(61, 61, 61, 0.08);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at top right, rgba(61, 61, 61, 0.05), transparent 70%);
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: 0;
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card:hover {
  -webkit-transform: translateY(-8px);
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(61, 61, 61, 0.15);
  border-color: rgba(61, 61, 61, 0.15);
}

.feature-card > * {
  position: relative;
  z-index: 1;
}

/* Feature Preview Image - 悬停展示图片 */
.feature-preview-image {
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  opacity: 0;
  -webkit-transform: translateX(100%);
  transform: translateX(100%);
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 10;
  pointer-events: none;
  border-radius: var(--radius-xl);
}

.feature-preview-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center center;
  border-radius: var(--radius-xl);
  padding: 1rem;
  background: rgba(255, 255, 255, 0.98);
  cursor: zoom-in;
  transition: transform 0.3s ease;
}

.feature-card:hover .feature-preview-image {
  opacity: 1;
  -webkit-transform: translateX(0);
  transform: translateX(0);
  pointer-events: auto;
}

.feature-preview-image img:hover {
  -webkit-transform: scale(1.02);
  transform: scale(1.02);
}

/* 图片放大查看模态框 */
.image-lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.95);
  z-index: 99999;
  display: none;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  animation: fadeIn 0.3s ease;
}

.image-lightbox.active {
  display: flex;
}

.image-lightbox img {
  max-width: 90%;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  animation: zoomIn 0.3s ease;
}

.image-lightbox-close {
  position: absolute;
  top: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: white;
  font-size: 24px;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.image-lightbox-close:hover {
  background: rgba(255, 255, 255, 0.2);
  -webkit-transform: rotate(90deg) scale(1.1);
  transform: rotate(90deg) scale(1.1);
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes zoomIn {
  from {
    -webkit-transform: scale(0.8);
    transform: scale(0.8);
    opacity: 0;
  }
  to {
    -webkit-transform: scale(1);
    transform: scale(1);
    opacity: 1;
  }
}

/* 图片放大查看 - 移动端优化 */
@media (max-width: 768px) {
  .image-lightbox img {
    max-width: 95%;
    max-height: 80vh;
    padding: 0.5rem;
  }
  
  .image-lightbox-close {
    top: 1rem;
    right: 1rem;
    width: 45px;
    height: 45px;
    font-size: 22px;
    background: rgba(255, 255, 255, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.4);
  }
  
  /* 移动端禁用关闭按钮的hover效果 */
  .image-lightbox-close:hover {
    -webkit-transform: none;
    transform: none;
  }
}

@media (max-width: 480px) {
  .image-lightbox img {
    max-width: 98%;
    max-height: 75vh;
  }
  
  .image-lightbox-close {
    width: 40px;
    height: 40px;
    font-size: 20px;
  }
}

/* Feature Icon - 功能图标 */
.feature-icon-wrapper {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.feature-icon {
  width: 70px;
  height: 70px;
  background: var(--gradient-primary);
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: white;
  box-shadow: 0 8px 20px rgba(61, 61, 61, 0.25);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.feature-icon::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  -webkit-transform: rotate(45deg);
  transform: rotate(45deg);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover .feature-icon {
  -webkit-transform: scale(1.1) rotate(5deg);
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 12px 30px rgba(61, 61, 61, 0.35);
}

.feature-card:hover .feature-icon::before {
  opacity: 1;
}

.feature-number {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, rgba(61, 61, 61, 0.15), rgba(61, 61, 61, 0.25));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

/* Feature Content - 功能内容 */
.feature-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  line-height: 1.3;
}

.feature-description {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

/* Feature Tags - 功能标签 */
.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.feature-tag {
  display: inline-flex;
  padding: 0.4rem 1rem;
  background: rgba(61, 61, 61, 0.08);
  color: var(--text-primary);
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.3s ease;
  border: 1px solid rgba(61, 61, 61, 0.1);
}

.feature-card:hover .feature-tag {
  background: rgba(61, 61, 61, 0.12);
  border-color: rgba(61, 61, 61, 0.15);
  -webkit-transform: translateY(-2px);
  transform: translateY(-2px);
}

/* Feature CTA Box - 底部行动召唤 */
.feature-cta-box {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: 3rem 2rem;
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(61, 61, 61, 0.1);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.feature-cta-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at center, rgba(61, 61, 61, 0.05), transparent 70%);
  z-index: 0;
}

.feature-cta-box > * {
  position: relative;
  z-index: 1;
}

.feature-cta-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-cta-description {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

.btn-outline-primary {
  color: var(--text-primary);
  border: 2px solid var(--text-primary);
  background: rgba(255, 255, 255, 0.95);
  transition: all 0.3s ease;
}

.btn-outline-primary:hover {
  color: white;
  background: var(--gradient-primary);
  border-color: transparent;
  -webkit-transform: translateY(-2px);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(61, 61, 61, 0.25);
}

/* Responsive Design - 响应式设计 */
@media (max-width: 768px) {
  .features-section {
    padding: 4rem 0;
  }

  .features-section .section-title {
    font-size: 2rem;
    text-shadow: 
      0 1px 0 rgba(255, 255, 255, 0.3),
      0 2px 0 rgba(0, 0, 0, 0.15),
      0 3px 0 rgba(0, 0, 0, 0.1),
      0 4px 6px rgba(0, 0, 0, 0.2);
  }

  .features-section .section-description {
    font-size: 1rem;
  }

  .feature-card {
    padding: 2rem;
  }

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

  .feature-number {
    font-size: 1.5rem;
  }

  .feature-title {
    font-size: 1.3rem;
  }

  .feature-cta-box {
    padding: 2rem 1.5rem;
  }

  .feature-cta-title {
    font-size: 1.5rem;
  }

  .feature-cta-description {
    font-size: 1rem;
  }
  
  /* 移动端隐藏悬停图片 */
  .feature-preview-image {
    display: none !important;
  }
  
  /* 移动端功能卡片优化 */
  .feature-card {
    touch-action: manipulation;
  }
  
  /* 移动端按钮增大触摸区域 */
  .btn-primary,
  .btn-outline-primary {
    min-height: 48px;
    padding: 0.85rem 1.5rem !important;
  }
}

@media (max-width: 480px) {
  .feature-card {
    padding: 1.5rem;
  }

  .feature-icon {
    width: 50px;
    height: 50px;
    font-size: 24px;
  }

  .feature-title {
    font-size: 1.2rem;
  }

  .feature-description {
    font-size: 0.95rem;
  }

  .feature-tag {
    font-size: 0.8rem;
    padding: 0.3rem 0.8rem;
  }
}

.testimonials-section .section-title {
  color: var(--primary-dark);
  font-weight: 700;
  margin-bottom: 1rem;
  text-shadow: 
    0 1px 0 rgba(255, 255, 255, 0.8),
    0 2px 3px rgba(0, 0, 0, 0.1),
    0 4px 8px rgba(0, 0, 0, 0.08),
    0 8px 16px rgba(0, 0, 0, 0.05);
  position: relative;
  z-index: 2;
}

.testimonials-section .section-description {
  color: var(--text-secondary);
  font-size: 1.125rem;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  position: relative;
  z-index: 2;
}

/* 增强卡片立体感 */
.testimonial-card {
  background: 
    linear-gradient(145deg, rgba(255, 255, 255, 1) 0%, rgba(250, 250, 250, 0.98) 100%);
  padding: 3rem;
  border-radius: var(--radius-xl);
  box-shadow: 
    0 2px 4px rgba(0, 0, 0, 0.04),
    0 8px 16px rgba(0, 0, 0, 0.08),
    0 16px 32px rgba(0, 0, 0, 0.12),
    0 32px 64px rgba(0, 0, 0, 0.08),
    inset 0 -2px 4px rgba(0, 0, 0, 0.02),
    inset 0 2px 4px rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(10px);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  transform-style: preserve-3d;
  overflow: visible;
}

/* 卡片内部高光效果 */
.testimonial-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.6) 0%, transparent 100%);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  pointer-events: none;
  z-index: 1;
}

/* 卡片外部投影增强 */
.testimonial-card::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: 50%;
  -webkit-transform: translateX(-50%);
  transform: translateX(-50%);
  width: 90%;
  height: 40px;
  background: radial-gradient(ellipse at center, rgba(61, 61, 61, 0.15) 0%, transparent 70%);
  filter: blur(15px);
  border-radius: 50%;
  z-index: -1;
  transition: all 0.4s ease;
}

.testimonial-card:hover {
  -webkit-transform: translateY(-8px) scale(1.01);
  transform: translateY(-8px) scale(1.01);
  box-shadow: 
    0 4px 8px rgba(0, 0, 0, 0.06),
    0 12px 24px rgba(0, 0, 0, 0.1),
    0 24px 48px rgba(0, 0, 0, 0.14),
    0 48px 96px rgba(0, 0, 0, 0.1),
    inset 0 -2px 4px rgba(0, 0, 0, 0.03),
    inset 0 2px 6px rgba(255, 255, 255, 0.9);
  border-color: rgba(255, 255, 255, 0.8);
}

.testimonial-card:hover::after {
  bottom: -25px;
  width: 95%;
  height: 50px;
  background: radial-gradient(ellipse at center, rgba(61, 61, 61, 0.2) 0%, transparent 70%);
}

/* 卡片内容z-index调整 */
.testimonial-card > * {
  position: relative;
  z-index: 2;
}

.testimonial-images {
  gap: 2rem;
}

/* 增强二维码立体感 */
.testimonial-images img {
  border-radius: var(--radius-lg);
  box-shadow: 
    0 2px 4px rgba(0, 0, 0, 0.06),
    0 6px 12px rgba(0, 0, 0, 0.1),
    0 12px 24px rgba(0, 0, 0, 0.12),
    0 24px 48px rgba(0, 0, 0, 0.08),
    inset 0 1px 2px rgba(255, 255, 255, 0.6),
    inset 0 -1px 2px rgba(0, 0, 0, 0.05);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 3px solid rgba(255, 255, 255, 0.9);
  background: linear-gradient(145deg, #ffffff 0%, #fafafa 100%);
  padding: 8px;
  position: relative;
  transform-style: preserve-3d;
}

/* 二维码外边框光泽效果 */
.testimonial-images > div {
  position: relative;
  display: inline-block;
}

.testimonial-images > div::before {
  content: '';
  position: absolute;
  inset: -4px;
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.8) 0%,
    rgba(255, 255, 255, 0.4) 25%,
    transparent 50%,
    rgba(0, 0, 0, 0.02) 75%,
    rgba(0, 0, 0, 0.05) 100%);
  border-radius: calc(var(--radius-lg) + 4px);
  z-index: -1;
  pointer-events: none;
  opacity: 0.8;
  transition: all 0.4s ease;
}

.testimonial-images > div:hover::before {
  inset: -6px;
  opacity: 1;
}

.testimonial-images img:hover {
  -webkit-transform: translateY(-6px) scale(1.03) rotate(1deg);
  transform: translateY(-6px) scale(1.03) rotate(1deg);
  box-shadow: 
    0 4px 8px rgba(0, 0, 0, 0.08),
    0 10px 20px rgba(0, 0, 0, 0.12),
    0 20px 40px rgba(0, 0, 0, 0.14),
    0 40px 80px rgba(0, 0, 0, 0.1),
    inset 0 1px 3px rgba(255, 255, 255, 0.8),
    inset 0 -1px 3px rgba(0, 0, 0, 0.08);
  border-color: rgba(255, 255, 255, 1);
}

/* 商务合作徽章立体感 */
.business-badge {
  display: inline-block;
  background: linear-gradient(145deg, #4a4a4a 0%, #3d3d3d 50%, #2d2d2d 100%);
  color: white;
  padding: 0.6rem 1.5rem;
  border-radius: 25px;
  font-size: 0.95rem;
  font-weight: 600;
  box-shadow: 
    0 2px 4px rgba(0, 0, 0, 0.15),
    0 4px 8px rgba(0, 0, 0, 0.2),
    0 8px 16px rgba(0, 0, 0, 0.15),
    inset 0 1px 1px rgba(255, 255, 255, 0.2),
    inset 0 -1px 1px rgba(0, 0, 0, 0.3);
  position: relative;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.business-badge::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
  transition: left 0.6s ease;
}

.business-badge:hover {
  -webkit-transform: translateY(-2px) scale(1.02);
  transform: translateY(-2px) scale(1.02);
  box-shadow: 
    0 4px 8px rgba(0, 0, 0, 0.2),
    0 8px 16px rgba(0, 0, 0, 0.25),
    0 12px 24px rgba(0, 0, 0, 0.2),
    inset 0 1px 2px rgba(255, 255, 255, 0.25),
    inset 0 -1px 2px rgba(0, 0, 0, 0.4);
}

.business-badge:hover::before {
  left: 100%;
}

/* 客服文本立体感 */
.service-label {
  margin-top: 1rem;
  color: #666;
  font-size: 0.9rem;
  font-weight: 600;
  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
  letter-spacing: 0.3px;
}

/* 工作时间区域立体感 */
.work-time-section {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  position: relative;
}

.work-time-section::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 50%;
  -webkit-transform: translateX(-50%);
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
}

.work-time-text {
  color: #999;
  font-size: 0.85rem;
  margin: 0;
  text-shadow: 0 1px 1px rgba(255, 255, 255, 0.5);
}

.quote-icon {
  font-size: 3rem;
  color: var(--primary-dark);
  margin-bottom: 1.5rem;
}

.testimonial-text {
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--text-primary);
  margin-bottom: 2rem;
  font-style: italic;
}

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

.author-name {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.author-title {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* 博客区域 */
.blog-section {
  padding: var(--section-padding);
}

.blog-card {
  background: white;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  height: 100%;
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.blog-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.blog-content {
  padding: 1.5rem;
}

.blog-date {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

.blog-title {
  font-weight: 600;
  margin-bottom: 1rem;
  line-height: 1.4;
}

.blog-link {
  color: var(--primary-blue);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

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

/* 订阅区域 */
.newsletter-section {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-purple) 100%);
  padding: var(--section-padding);
}

.newsletter-card {
  background: white;
  padding: 3rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.newsletter-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.newsletter-description {
  color: var(--text-secondary);
  font-size: 1.125rem;
}

.newsletter-form .form-control {
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  border: 2px solid #E5E7EB;
  padding: 0.75rem 1rem;
}

.newsletter-form .btn {
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 0.75rem 1.5rem;
}

/* 页脚 */
.footer {
  background: var(--gradient-dark);
  color: var(--text-light);
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
}

.footer-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-description {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 2rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.contact-link {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.contact-link:hover {
  color: var(--text-light);
  -webkit-transform: translateX(4px);
  transform: translateX(4px);
}

.footer-heading {
  color: var(--text-light);
  font-weight: 600;
  margin-bottom: 1rem;
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 0.1em;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  transition: all 0.3s ease;
  display: inline-block;
}

.footer-links a:hover {
  color: var(--text-light);
  -webkit-transform: translateX(4px);
  transform: translateX(4px);
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-link {
  width: 2.5rem;
  height: 2.5rem;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.social-link:hover {
  background: var(--gradient-primary);
  color: white;
  -webkit-transform: translateY(-4px) scale(1.1);
  transform: translateY(-4px) scale(1.1);
  box-shadow: 0 4px 12px rgba(61, 61, 61, 0.3);
  border-color: transparent;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  margin-top: 3rem;
}

.copyright {
  color: rgba(255, 255, 255, 0.75);
  margin: 0;
  font-size: 0.9rem;
}

.privacy-link {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
}

.privacy-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--text-light);
  transition: width 0.3s ease;
}

.privacy-link:hover {
  color: var(--text-light);
}

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

/* 图片尺寸优化 */
.hero-image {
  position: relative;
  overflow: hidden;
}

.hero-image img {
  width: 100%;
  height: auto;
  max-height: 656px;
  object-fit: cover;
  object-position: center;
}

.team-image {
  position: relative;
  overflow: hidden;
}

.team-image img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  object-position: center;
}

/* 专门针对1080p等中等分辨率屏幕 */
@media (max-width: 1200px) and (min-width: 769px) {
  .hero-title {
    font-size: 3.5rem;
    white-space: normal;
    line-height: 1.2;
    text-shadow: 
      0 1px 0 rgba(255, 255, 255, 0.4),
      0 2px 0 rgba(0, 0, 0, 0.2),
      0 3px 0 rgba(0, 0, 0, 0.15),
      0 4px 0 rgba(0, 0, 0, 0.1),
      0 5px 5px rgba(0, 0, 0, 0.2),
      0 8px 12px rgba(0, 0, 0, 0.3);
  }
}

/* 针对小笔记本和平板横屏 */
@media (max-width: 1024px) and (min-width: 769px) {
  .hero-title {
    font-size: 3rem;
    white-space: normal;
    line-height: 1.2;
    text-shadow: 
      0 1px 0 rgba(255, 255, 255, 0.4),
      0 2px 0 rgba(0, 0, 0, 0.2),
      0 3px 0 rgba(0, 0, 0, 0.15),
      0 4px 5px rgba(0, 0, 0, 0.2),
      0 6px 10px rgba(0, 0, 0, 0.3);
  }
  
  .container-fluid.px-6 {
    padding-left: 3rem !important;
    padding-right: 3rem !important;
  }
}

/* 响应式设计 */
@media (max-width: 768px) {
  .hero-title { 
    font-size: 2.5rem !important; 
    white-space: normal !important;
    word-break: break-word;
    line-height: 1.2;
    text-shadow: 
      0 1px 0 rgba(255, 255, 255, 0.3),
      0 2px 0 rgba(0, 0, 0, 0.2),
      0 3px 0 rgba(0, 0, 0, 0.1),
      0 4px 8px rgba(0, 0, 0, 0.25);
  }
  
  .hero-description { 
    font-size: 1.1rem !important;
    line-height: 1.6;
  }
  
  .hero-buttons .btn { 
    font-size: 1rem !important; 
    padding: 0.9rem 1.5rem !important;
  }
  
  .section-title {
    font-size: 1.75rem !important;
    line-height: 1.3;
  }
  
  .stat-number {
    font-size: 2rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    gap: 1rem;
    width: 100%;
  }
  
  .download-item {
    justify-content: center;
    width: 100%;
  }
  
  .hero-buttons .btn {
    width: 100% !important;
    max-width: 100%;
  }
  
  .hero-image img { 
    max-height: 80vh !important; 
    height: auto !important;
    width: 100% !important;
    min-height: 300px;
  }
  
  .hero-image {
    padding: 0 1rem;
    margin-top: 2rem;
  }
  
  .team-image img {
    height: 150px;
  }
  
  .newsletter-form .input-group {
    flex-direction: column;
  }
  
  /* 移动端导航栏优化 */
  .navbar {
    padding: 1rem 0 !important;
  }
  
  .navbar-brand {
    font-size: 1.25rem !important;
  }
  
  /* 商务合作区域移动端优化 */
  .testimonial-images {
    flex-direction: column !important;
    gap: 2rem !important;
  }
  
  .testimonial-images img {
    max-width: 200px !important;
    margin: 0 auto;
    box-shadow: 
      0 2px 4px rgba(0, 0, 0, 0.06),
      0 4px 8px rgba(0, 0, 0, 0.1),
      0 8px 16px rgba(0, 0, 0, 0.08),
      inset 0 1px 2px rgba(255, 255, 255, 0.5),
      inset 0 -1px 2px rgba(0, 0, 0, 0.05) !important;
  }
  
  .testimonial-card {
    padding: 2rem 1.5rem !important;
    box-shadow: 
      0 2px 4px rgba(0, 0, 0, 0.04),
      0 6px 12px rgba(0, 0, 0, 0.08),
      0 12px 24px rgba(0, 0, 0, 0.1),
      inset 0 -1px 3px rgba(0, 0, 0, 0.02),
      inset 0 1px 3px rgba(255, 255, 255, 0.7) !important;
  }
  
  /* 移动端徽章优化 */
  .business-badge {
    font-size: 0.85rem !important;
    padding: 0.5rem 1.2rem !important;
  }
  
  /* 移动端标题立体感减弱(性能优化) */
  .testimonials-section .section-title {
    text-shadow: 
      0 1px 0 rgba(255, 255, 255, 0.8),
      0 2px 3px rgba(0, 0, 0, 0.1),
      0 4px 6px rgba(0, 0, 0, 0.06) !important;
  }
  
  /* 容器内边距优化 */
  .container-fluid.px-6 {
    padding-left: 1.5rem !important;
    padding-right: 1.5rem !important;
  }
}

/* 更小的手机屏幕 */
@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem !important;
    white-space: normal !important;
    text-shadow: 
      0 1px 0 rgba(255, 255, 255, 0.3),
      0 2px 0 rgba(0, 0, 0, 0.15),
      0 3px 6px rgba(0, 0, 0, 0.2);
  }
  
  .hero-description {
    font-size: 1rem !important;
  }
  
  .hero-image img { 
    max-height: 60vh !important; 
    min-height: 200px !important;
  }
  
  .hero-image {
    padding: 0 0.5rem;
  }
  
  .newsletter-form .form-control,
  .newsletter-form .btn {
    border-radius: var(--radius-sm);
  }
  
  .newsletter-form .btn {
    margin-top: 0.5rem;
  }
  
  .download-item .btn {
    padding: 0.8rem 1.2rem !important;
    font-size: 0.95rem !important;
  }
  
  .download-item .btn img {
    width: 22px !important;
    height: 22px !important;
  }
  
  .container-fluid.px-6 {
    padding-left: 1rem !important;
    padding-right: 1rem !important;
  }
  
  .section-title {
    font-size: 1.5rem !important;
  }
  
  .testimonial-images img {
    max-width: 160px !important;
    box-shadow: 
      0 2px 4px rgba(0, 0, 0, 0.05),
      0 4px 8px rgba(0, 0, 0, 0.08),
      0 6px 12px rgba(0, 0, 0, 0.06),
      inset 0 1px 2px rgba(255, 255, 255, 0.5),
      inset 0 -1px 1px rgba(0, 0, 0, 0.04) !important;
  }
  
  /* 小屏幕徽章优化 */
  .business-badge {
    font-size: 0.8rem !important;
    padding: 0.45rem 1rem !important;
  }
  
  /* 小屏幕卡片立体感优化 */
  .testimonial-card {
    box-shadow: 
      0 2px 4px rgba(0, 0, 0, 0.04),
      0 4px 8px rgba(0, 0, 0, 0.06),
      0 8px 16px rgba(0, 0, 0, 0.08),
      inset 0 -1px 2px rgba(0, 0, 0, 0.02),
      inset 0 1px 2px rgba(255, 255, 255, 0.6) !important;
  }
}

@media (max-width: 576px) {
  .hero-title { 
    font-size: 2.25rem !important; 
    white-space: normal !important;
    text-shadow: 
      0 1px 0 rgba(255, 255, 255, 0.3),
      0 2px 0 rgba(0, 0, 0, 0.15),
      0 3px 6px rgba(0, 0, 0, 0.2);
  }
  
  .hero-description { 
    font-size: 1.05rem !important;
  }
  
  .section-title {
    font-size: 1.6rem !important;
  }
  
  .testimonial-card,
  .newsletter-card {
    padding: 1.5rem !important;
  }
  
  .expertise-card,
  .service-card,
  .process-card {
    padding: 1.5rem;
  }
  
  .download-item .btn {
    padding: 0.85rem 1.3rem !important;
    font-size: 0.95rem !important;
  }
}

/* 超大屏幕优化 */
@media (min-width: 1400px) {
  .hero-title {
    font-size: 4.5rem !important;
    white-space: normal !important;
    line-height: 1.2;
    max-width: 100%;
    text-shadow: 
      0 1px 0 rgba(255, 255, 255, 0.4),
      0 2px 0 rgba(0, 0, 0, 0.2),
      0 3px 0 rgba(0, 0, 0, 0.15),
      0 4px 0 rgba(0, 0, 0, 0.1),
      0 5px 0 rgba(0, 0, 0, 0.05),
      0 6px 1px rgba(0, 0, 0, 0.1),
      0 8px 8px rgba(0, 0, 0, 0.2),
      0 12px 15px rgba(0, 0, 0, 0.3);
  }
  
  .hero-description {
    font-size: 1.75rem !important;
  }
  
  .container-fluid.px-6 {
    padding-left: 8rem !important;
    padding-right: 8rem !important;
  }
}

/* 4K 及以上超大屏幕 */
@media (min-width: 2000px) {
  .hero-title {
    font-size: 5rem !important;
    white-space: normal !important;
    line-height: 1.2;
    text-shadow: 
      0 1px 0 rgba(255, 255, 255, 0.4),
      0 2px 0 rgba(0, 0, 0, 0.2),
      0 3px 0 rgba(0, 0, 0, 0.15),
      0 4px 0 rgba(0, 0, 0, 0.1),
      0 5px 0 rgba(0, 0, 0, 0.05),
      0 6px 1px rgba(0, 0, 0, 0.1),
      0 8px 8px rgba(0, 0, 0, 0.2),
      0 12px 15px rgba(0, 0, 0, 0.3),
      0 20px 30px rgba(0, 0, 0, 0.4);
  }
}

/* 动画效果 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    -webkit-transform: translateY(30px);
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    -webkit-transform: translateY(0);
    transform: translateY(0);
  }
}

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

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.8;
  }
}

.hero-content,
.section-title,
.service-card,
.process-card,
.blog-card {
  animation: fadeInUp 0.6s ease-out;
}

.hero-content {
  position: relative;
  z-index: 1;
}

/* 添加背景装饰元素 */
.hero-section::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100px;
  background: linear-gradient(to top, rgba(245, 245, 245, 0.3), transparent);
  pointer-events: none;
}

/* 滚动行为 */
html {
  scroll-behavior: smooth;
}

/* 焦点样式 */
.btn:focus,
.form-control:focus {
  box-shadow: 0 0 0 0.2rem rgba(59, 130, 246, 0.25);
}

/* 自定义更大水平内边距工具类（约等于 Bootstrap px-5 的 2 倍） */
.px-6 {
  padding-left: 6rem !important;
  padding-right: 6rem !important;
}

/* 无障碍优化 */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

/* ========== 额外的现代化优化样式 ========== */

/* 页面滚动进度条 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--gradient-primary);
  z-index: 9999;
  transition: width 0.3s ease;
}

/* 优化全局按钮样式 */
.btn-primary {
  background: var(--gradient-primary) !important;
  border: none !important;
  border-radius: var(--radius-md) !important;
  padding: 0.75rem 1.5rem !important;
  font-weight: 600 !important;
  box-shadow: 0 4px 12px rgba(61, 61, 61, 0.25) !important;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  -webkit-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
}

.btn-primary:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary:hover {
  -webkit-transform: translateY(-2px) scale(1.02) !important;
  transform: translateY(-2px) scale(1.02) !important;
  box-shadow: 0 6px 20px rgba(61, 61, 61, 0.35) !important;
}

.btn-primary:active {
  -webkit-transform: translateY(0) scale(0.98) !important;
  transform: translateY(0) scale(0.98) !important;
}

/* 增强卡片悬停效果 */
.service-card,
.process-card,
.blog-card,
.expertise-card {
  position: relative;
  overflow: hidden;
}

.service-card::before,
.process-card::before,
.blog-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(61, 61, 61, 0.05) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
}

.service-card:hover::before,
.process-card:hover::before,
.blog-card:hover::before {
  opacity: 1;
}

/* 触摸设备优化 - 隐藏悬停图片 */
@media (hover: none) and (pointer: coarse) {
  .feature-preview-image {
    display: none !important;
  }
  
  /* 触摸设备上的关闭按钮优化 */
  .image-lightbox-close {
    width: 50px;
    height: 50px;
    font-size: 28px;
    background: rgba(255, 255, 255, 0.2);
    touch-action: manipulation;
  }
  
  /* 移除触摸设备的hover效果 */
  .image-lightbox-close:hover {
    -webkit-transform: none;
    transform: none;
    background: rgba(255, 255, 255, 0.2);
  }
  
  /* 触摸反馈 */
  .image-lightbox-close:active {
    -webkit-transform: scale(0.9);
    transform: scale(0.9);
    background: rgba(255, 255, 255, 0.3);
  }
}

/* 光标跟随效果 */
@media (hover: hover) {
  .download-item .btn,
  .testimonial-images img {
    position: relative;
  }
  
  .download-item .btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(61, 61, 61, 0.1);
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
    pointer-events: none;
  }
  
  .download-item .btn:hover::after {
    width: 200px;
    height: 200px;
  }
}

/* 渐变文字效果 */
.section-title {
  position: relative;
  display: inline-block;
}

/* 图片加载优化 */
img {
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

/* 平滑滚动条样式 */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-gray);
}

::-webkit-scrollbar-thumb {
  background: var(--gradient-primary);
  border-radius: 5px;
  border: 2px solid var(--bg-gray);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-darker);
}

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

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

/* 加载状态优化 */
.hero-image img,
.testimonial-images img {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
}

.hero-image img[src],
.testimonial-images img[src] {
  animation: none;
  background: none;
}

/* 响应式图片容器 */
.hero-image,
.testimonial-images {
  position: relative;
}

.hero-image::after,
.testimonial-images::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  transition: opacity 0.3s ease;
  opacity: 0;
}

.hero-image:hover::after,
.testimonial-images:hover::after {
  opacity: 1;
}

/* 性能优化 - GPU 加速 */
.download-item .btn,
.nav-link,
.service-card,
.process-card,
.blog-card,
.hero-image img {
  will-change: transform;
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
  backface-visibility: hidden;
}

/* 打印样式优化 */
@media print {
  .navbar,
  .footer,
  .hero-buttons {
    display: none !important;
  }
  
  body {
    background: white !important;
    color: black !important;
  }
  
  .hero-section {
    background: white !important;
    color: black !important;
  }
}

/* 强制保持亮色主题，忽略系统暗色主题设置 */
@media (prefers-color-scheme: dark) {
  :root {
    /* 保持亮色主题的颜色值，覆盖系统暗色主题 */
    --text-primary: #333333;
    --text-secondary: #666666;
    --bg-card: rgba(255, 255, 255, 0.95);
    --bg-gray: #f5f5f5;
  }
  
  body {
    color: var(--text-primary);
    background-color: var(--bg-light);
  }
  
  /* 确保所有卡片在暗色主题下仍保持亮色样式 */
  .feature-card {
    background: rgba(255, 255, 255, 0.95);
    border-color: rgba(61, 61, 61, 0.08);
    color: var(--text-primary);
  }
  
  .feature-cta-box {
    background: rgba(255, 255, 255, 0.95);
    border-color: rgba(61, 61, 61, 0.1);
    color: var(--text-primary);
  }
  
  .feature-title {
    color: var(--text-primary);
  }
  
  .feature-description {
    color: var(--text-secondary);
  }
  
  .feature-tag {
    background: rgba(61, 61, 61, 0.08);
    border-color: rgba(61, 61, 61, 0.1);
    color: var(--text-primary);
  }
  
  .feature-number {
    background: linear-gradient(135deg, rgba(61, 61, 61, 0.15), rgba(61, 61, 61, 0.25));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }
}

/* ========== 移动端触摸和兼容性优化 ========== */

/* 移动端触摸优化 */
@media (hover: none) and (pointer: coarse) {
  /* 移动设备上增大可点击区域 */
  .download-item .btn {
    min-height: 50px;
    padding: 1rem 1.5rem !important;
  }
  
  .nav-link {
    padding: 0.75rem 1rem !important;
  }
  
  /* 禁用悬停效果，避免移动端点击后残留 */
  .download-item .btn:hover,
  .nav-link:hover,
  .hero-image img:hover {
    -webkit-transform: none;
    transform: none;
  }
  
  /* 触摸反馈 */
  .download-item .btn:active {
    -webkit-transform: scale(0.95) !important;
    transform: scale(0.95) !important;
    opacity: 0.8;
  }
  
  /* 移除复杂动画，提升性能 */
  .hero-section::before,
  .hero-section::after {
    display: none;
  }
}

/* iOS Safari 兼容性 */
@supports (-webkit-touch-callout: none) {
  /* iOS Safari 的特定样式 */
  body {
    -webkit-text-size-adjust: 100%;
  }
  
  .hero-title {
    -webkit-background-clip: text;
    background-clip: text;
  }
  
  /* 修复 iOS Safari 的圆角问题 */
  .download-item .btn,
  .testimonial-card,
  .navbar {
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
  }
}

/* 安卓浏览器兼容性 */
@media screen and (-webkit-min-device-pixel-ratio: 0) {
  /* 安卓 Chrome 优化 */
  .download-item .btn {
    -webkit-tap-highlight-color: rgba(61, 61, 61, 0.2);
  }
}

/* 旧浏览器降级支持 */
@supports not (backdrop-filter: blur(10px)) {
  .download-item .btn,
  .testimonial-card {
    background: rgba(255, 255, 255, 1) !important;
  }
  
  .navbar {
    background: #1a1a1a !important;
  }
}

/* IE11 兼容性（基础支持） */
@media screen and (-ms-high-contrast: active), (-ms-high-contrast: none) {
  .hero-title {
    background: none;
    color: #ffffff;
  }
  
  .download-item .btn {
    background: #ffffff !important;
  }
}

/* 横屏优化 */
@media (max-height: 600px) and (orientation: landscape) {
  .hero-section {
    min-height: auto !important;
    padding: 2rem 0 !important;
  }
  
  .hero-image img {
    max-height: 50vh !important;
  }
  
  .hero-title {
    font-size: 2rem !important;
    margin-bottom: 1rem !important;
  }
  
  .hero-description {
    font-size: 0.95rem !important;
    margin-bottom: 1.5rem !important;
  }
}

/* 防止文字溢出 */
.hero-title,
.section-title,
.hero-description {
  overflow-wrap: break-word;
  word-wrap: break-word;
  -webkit-hyphens: auto;
  -moz-hyphens: auto;
  -ms-hyphens: auto;
  hyphens: auto;
}

/* 图片加载优化 */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* 平滑滚动的浏览器兼容性 */
html {
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

/* 移动端输入框优化 */
input,
textarea,
select {
  font-size: 16px; /* 防止 iOS Safari 自动缩放 */
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

/* 移除点击高亮 */
a,
button {
  -webkit-tap-highlight-color: transparent;
}

/* 确保触摸滚动流畅 */
.testimonial-card,
.hero-section,
.navbar {
  -webkit-overflow-scrolling: touch;
}

/* Flexbox 兼容性 */
.hero-buttons,
.download-item,
.testimonial-images {
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
}

/* 网格布局降级 */
@supports not (display: grid) {
  .hero-buttons {
    display: block;
  }
  
  .download-item {
    display: block;
    margin-bottom: 1rem;
  }
}

/* 确保按钮文字不换行（小屏幕除外） */
@media (min-width: 769px) {
  .download-item .btn span {
    white-space: nowrap;
  }
}

/* 打印时隐藏动画和交互元素 */
@media print {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    box-shadow: none !important;
  }
}