/* 现代化高端设计样式 */

/* CSS变量定义 */
:root {
  /* 深色主题配色 */
  --primary-bg: #0a0a0a;
  --secondary-bg: #111111;
  --card-bg: rgba(255, 255, 255, 0.05);
  --glass-bg: rgba(255, 255, 255, 0.08);
  --border-color: rgba(255, 255, 255, 0.1);
  
  /* 渐变色彩 */
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  
  /* 文字颜色 */
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-muted: rgba(255, 255, 255, 0.5);
  
  /* 阴影效果 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.25);
  
  /* 字体 */
  --font-primary: 'Inter', 'Noto Sans SC', sans-serif;
  --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', monospace;
  
  /* 间距 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* 边框圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* 动画时长 */
  --duration-fast: 0.2s;
  --duration-normal: 0.3s;
  --duration-slow: 0.5s;
}

/* 全局重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  background: var(--primary-bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 背景装饰 */
.bg-decoration {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
}

.floating-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(40px);
  opacity: 0.3;
  animation: float 6s ease-in-out infinite;
}

.orb-1 {
  width: 300px;
  height: 300px;
  background: var(--primary-gradient);
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}

.orb-2 {
  width: 200px;
  height: 200px;
  background: var(--secondary-gradient);
  top: 60%;
  right: 20%;
  animation-delay: 2s;
}

.orb-3 {
  width: 150px;
  height: 150px;
  background: var(--accent-gradient);
  bottom: 20%;
  left: 60%;
  animation-delay: 4s;
}

.grid-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: 0.5;
}

@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  33% { transform: translateY(-20px) rotate(120deg); }
  66% { transform: translateY(10px) rotate(240deg); }
}

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--spacing-sm) 0;
  backdrop-filter: blur(20px);
  background: rgba(10, 10, 10, 0.8);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--duration-normal) ease;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  text-decoration: none;
}

.logo-icon {
  width: 32px;
  height: 32px;
  transition: transform var(--duration-normal) ease;
}

.brand-logo:hover .logo-icon {
  transform: rotate(360deg);
}

.brand-text {
  font-size: 1.25rem;
  font-weight: 600;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  position: relative;
  transition: color var(--duration-normal) ease;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-gradient);
  transition: width var(--duration-normal) ease;
}

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

.nav-actions {
  display: flex;
  gap: var(--spacing-sm);
}

/* 按钮样式 */
.btn-primary, .btn-secondary {
  padding: var(--spacing-xs) var(--spacing-md);
  border: none;
  border-radius: var(--radius-md);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration-normal) ease;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  text-decoration: none;
  font-family: inherit;
}

.btn-primary {
  background: var(--primary-gradient);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--glass-bg);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-large {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 1.1rem;
}

.btn-icon {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* 主页区域 */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--spacing-2xl) 0;
  position: relative;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.hero-content {
  animation: slideInLeft 1s ease-out;
}

.hero-badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--glass-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(10px);
  margin-bottom: var(--spacing-md);
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--spacing-md);
}

.title-line {
  display: block;
}

.gradient-text {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  animation: slideInRight 1s ease-out;
}

.visual-container {
  position: relative;
  width: 100%;
  max-width: 500px;
}

.ai-brain {
  position: relative;
  z-index: 2;
}

.brain-svg {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 10px 30px rgba(102, 126, 234, 0.3));
}

.node {
  animation: pulse 2s ease-in-out infinite;
}

.connection {
  animation: flow 3s ease-in-out infinite;
}

/* 动画广告容器 */
.hero-video-container {
  position: relative;
  width: 100%;
  max-width: 600px;
  aspect-ratio: 16/9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  background: var(--card-bg);
  border: 1px solid var(--border-color);
}

.hero-video-iframe {
  width: 100%;
  height: 100%;
  border: none;
  border-radius: var(--radius-lg);
  transition: transform var(--duration-normal) ease;
}

.hero-video-container:hover .hero-video-iframe {
  transform: scale(1.02);
}

.video-overlay {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  z-index: 10;
  pointer-events: none;
}

.video-badge {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--glass-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
  font-size: 0.85rem;
  color: var(--text-secondary);
  animation: pulse 2s ease-in-out infinite;
}

.badge-icon {
  font-size: 1rem;
}

.floating-cards {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.info-card {
  position: absolute;
  padding: var(--spacing-sm);
  background: var(--glass-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.9rem;
  color: var(--text-secondary);
  animation: cardFloat 4s ease-in-out infinite;
}

.card-1 {
  top: 20%;
  left: -10%;
  animation-delay: 0s;
}

.card-2 {
  top: 60%;
  right: -10%;
  animation-delay: 1.5s;
}

.card-3 {
  bottom: 20%;
  left: 10%;
  animation-delay: 3s;
}

.card-icon {
  font-size: 1.2rem;
}

/* 通用容器和区块 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

section {
  padding: var(--spacing-2xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* 产品展示 */
.products-section {
  background: var(--secondary-bg);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-lg);
}

.product-card {
  background: var(--glass-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  backdrop-filter: blur(20px);
  transition: all var(--duration-normal) ease;
  position: relative;
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transition: transform var(--duration-normal) ease;
}

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

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(255, 255, 255, 0.2);
}

.product-card.featured {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
  border-color: rgba(102, 126, 234, 0.3);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-md);
}

.product-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.product-icon svg {
  width: 24px;
  height: 24px;
}

.product-badge {
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--secondary-gradient);
  color: white;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 500;
}

.product-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.product-description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.product-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-lg);
}

.feature-tag {
  padding: var(--spacing-xs) var(--spacing-sm);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.product-btn {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration-normal) ease;
}

.product-btn:hover {
  background: var(--primary-gradient);
  border-color: transparent;
  color: white;
}

/* 技术架构 */
.tech-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.architecture-diagram {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.layer {
  background: var(--glass-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  backdrop-filter: blur(10px);
  transition: all var(--duration-normal) ease;
}

.layer:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateX(8px);
}

.layer h4 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.layer-items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.layer-items span {
  padding: var(--spacing-xs) var(--spacing-sm);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.tech-details {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.tech-item {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.tech-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
}

.tech-icon svg {
  width: 24px;
  height: 24px;
}

.tech-item h4 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.tech-item p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 团队信息 */
.team-section {
  background: var(--secondary-bg);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.team-member {
  background: var(--glass-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  backdrop-filter: blur(20px);
  transition: all var(--duration-normal) ease;
}

.team-member:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(255, 255, 255, 0.2);
}

.member-avatar {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-md);
  border-radius: 50%;
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.avatar-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.avatar-placeholder svg {
  width: 40px;
  height: 40px;
}

.member-name {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.member-role {
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
}

.member-bio {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* 洞察文章 */
.insights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-lg);
}

.insight-card {
  background: var(--glass-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(20px);
  transition: all var(--duration-normal) ease;
}

.insight-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(255, 255, 255, 0.2);
}

.insight-card.featured {
  grid-column: span 2;
}

.card-image {
  height: 200px;
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.image-placeholder {
  color: rgba(255, 255, 255, 0.8);
}

.image-placeholder svg {
  width: 48px;
  height: 48px;
}

.card-content {
  padding: var(--spacing-lg);
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
  font-size: 0.9rem;
}

.category {
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--secondary-gradient);
  color: white;
  border-radius: var(--radius-sm);
  font-weight: 500;
}

.date {
  color: var(--text-muted);
}

.card-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  line-height: 1.4;
}

.card-excerpt {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.read-more {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: all var(--duration-normal) ease;
}

.read-more:hover {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 联系方式 */
.contact-section {
  background: var(--secondary-bg);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.contact-item {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.contact-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
}

.contact-icon svg {
  width: 24px;
  height: 24px;
}

.contact-details h4 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.contact-details p {
  color: var(--text-secondary);
  line-height: 1.5;
}

.contact-form {
  background: var(--glass-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  backdrop-filter: blur(20px);
}

.form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.form-group label {
  font-weight: 500;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea {
  padding: var(--spacing-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  transition: all var(--duration-normal) ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: rgba(102, 126, 234, 0.5);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

/* 页脚 */
.footer {
  background: var(--primary-bg);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-xl);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.brand-tagline {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.link-group h4 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.link-group ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.link-group a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--duration-normal) ease;
}

.link-group a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
}

.footer-bottom p {
  color: var(--text-muted);
}

.footer-social {
  display: flex;
  gap: var(--spacing-md);
}

.social-link {
  width: 40px;
  height: 40px;
  background: var(--glass-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--duration-normal) ease;
}

.social-link:hover {
  background: var(--primary-gradient);
  border-color: transparent;
  color: white;
  transform: translateY(-2px);
}

.social-link svg {
  width: 20px;
  height: 20px;
}

/* 动画定义 */
@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    transform: scale(1.1);
  }
}

@keyframes flow {
  0% {
    stroke-dasharray: 0 100;
  }
  100% {
    stroke-dasharray: 100 0;
  }
}

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

/* 响应式设计 */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-xl);
  }
  
  .tech-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .insight-card.featured {
    grid-column: span 1;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .hero-video-container {
    max-width: 100%;
    margin: 0 var(--spacing-md);
  }
  
  .video-overlay {
    top: var(--spacing-sm);
    right: var(--spacing-sm);
  }
  
  .video-badge {
    padding: var(--spacing-xs);
    font-size: 0.8rem;
  }
  
  .products-grid,
  .team-grid,
  .insights-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-links {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .btn-large {
    width: 100%;
    justify-content: center;
  }
}

/* 滚动条样式 */
::-webkit-scrollbar {
  width: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--primary-gradient);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--secondary-gradient);
}

/* 选择文本样式 */
::selection {
  background: rgba(102, 126, 234, 0.3);
  color: var(--text-primary);
}

::-moz-selection {
  background: rgba(102, 126, 234, 0.3);
  color: var(--text-primary);
}