/* 统一基础配色方案 */
:root {
  --primary-color: #667eea;
  --secondary-color: #764ba2;
  --accent-color: #f093fb;
  --complementary-color: #f5576c;
  --text-primary: #2c3e50;
  --text-secondary: #7f8c8d;
  --text-white: #ffffff;
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-gradient-purple: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --bg-gradient-light: linear-gradient(135deg, #f0f9ff 0%, #e6f7ff 100%);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --radius-md: 8px;
  --radius-lg: 12px;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
}

/* 基础样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  line-height: 1.7;
  color: var(--text-primary);
  overflow-x: hidden;
}

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

/* 统一章节间距 */
section {
  padding: var(--spacing-xxl) 0;
}

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: 1rem 0;
}

.navbar.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
  background: rgba(255, 255, 255, 0.98);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo h2 {
  color: var(--primary-color);
  font-size: 1.8rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-menu a {
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
  padding: 0.5rem 0;
}

.nav-menu a:hover {
  color: var(--primary-color);
}

.nav-menu a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 0;
  background: var(--primary-color);
  transition: width 0.3s ease;
}

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

/* 统一章节标题 */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-header h2 {
  font-size: 2.5rem;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

/* Hero区域 */
.hero {
  height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: 80px;
  background: var(--bg-gradient-purple);
  color: var(--text-white);
}

.hero-content {
  text-align: center;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xl);
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
}

/* 按钮样式 */
.btn {
  display: inline-block;
  padding: 12px 30px;
  border-radius: 30px;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  border: none;
  font-size: 1rem;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--bg-gradient-purple);
  transition: all 0.6s ease;
  z-index: -1;
}

.btn:hover::before {
  left: 0;
}

.btn-primary {
  background: var(--bg-gradient-purple);
  color: var(--text-white);
  box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(102, 126, 234, 0.6);
  color: var(--text-white);
}

.btn-secondary {
  background: transparent;
  color: var(--text-white);
  border: 2px solid rgba(255, 255, 255, 0.8);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-3px);
}

/* 视觉元素 */
.hero-visual {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.8;
}

.ai-brain {
  position: relative;
  width: 200px;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.neural-node {
  position: absolute;
  width: 15px;
  height: 15px;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.neural-node:nth-child(2) {
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  animation-delay: 0.5s;
}

.neural-node:nth-child(3) {
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  animation-delay: 1s;
}

.neural-network {
  position: absolute;
  width: 100%;
  height: 100%;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  animation: rotate 10s linear infinite;
}

/* 所有内容区域统一背景 */
.about { background: var(--bg-primary); }
.features { background: var(--bg-primary); }
.cases { background: var(--bg-primary); }
.business-section { background: var(--bg-primary); }
.scenarios { background: var(--bg-primary); }
.clients-section { background: var(--bg-primary); }
.ai-modes { background: var(--bg-primary); }

/* 数字化发展阶段使用浅色背景 */
.digital-evolution {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

/* 产品介绍 */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xxl);
  align-items: center;
}

.about-text h3 {
  font-size: 2rem;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.about-text p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
}

.tech-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.feature-item {
  text-align: center;
  padding: var(--spacing-lg);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  border: 1px solid var(--bg-secondary);
}

.feature-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.feature-item i {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
  display: block;
}

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

.feature-item p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0;
  line-height: 1.5;
}

/* 平台架构图 */
.platform-diagram {
  background: var(--bg-gradient-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-lg);
}

.layer {
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  border-radius: var(--radius-md);
  color: white;
  text-align: center;
}

.ai-layer {
  background: var(--bg-gradient-purple);
}

.platform-layer {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.data-layer {
  background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.layer h4 {
  margin-bottom: var(--spacing-sm);
  font-size: 1.1rem;
}

.apps, .components, .data-sources {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.app, .component, .source {
  background: rgba(255, 255, 255, 0.2);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.8rem;
}

/* 数字化发展阶段 */
.evolution-stages {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.stage {
  text-align: center;
  padding: var(--spacing-lg);
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  border: 1px solid var(--bg-secondary);
}

.stage:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.stage-icon {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
  display: block;
}

.stage h3 {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
  font-weight: 600;
}

.stage p {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* AI协作模式 */
.modes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.mode-card {
  background: var(--bg-secondary);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  text-align: center;
  border: 1px solid var(--bg-secondary);
}

.mode-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.mode-header i {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
  display: block;
}

.mode-header h3 {
  color: var(--text-primary);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.mode-content p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.6;
}

/* 客户展示 */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.client-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 80px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.9rem;
  text-align: center;
  padding: var(--spacing-xs);
  border: 1px solid var(--bg-secondary);
  box-shadow: var(--shadow-md);
}

.client-logo:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

/* 功能特性 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.feature-card {
  background: var(--bg-secondary);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all 0.3s ease;
  border: 1px solid var(--bg-secondary);
  box-shadow: var(--shadow-md);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.feature-icon {
  width: 70px;
  height: 70px;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  color: var(--text-white);
  font-size: 1.8rem;
}

.feature-card h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
  font-size: 1.2rem;
  font-weight: 600;
}

.feature-card p {
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: 0.95rem;
}

/* 客户案例 */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.case-card {
  background: var(--bg-secondary);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  border: 1px solid var(--bg-secondary);
}

.case-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.case-icon {
  width: 60px;
  height: 60px;
  background: var(--primary-color);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
}

.case-card h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  font-size: 1.1rem;
  font-weight: 600;
}

.case-card p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  font-size: 0.95rem;
  line-height: 1.6;
}

.case-results {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.result {
  text-align: center;
}

.result .number {
  display: block;
  font-size: 1.1rem;
  font-weight: bold;
  color: var(--primary-color);
  margin-bottom: var(--spacing-xs);
}

.result .label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* 业务范围 - 简化样式 */
.business-section-simple {
  background: var(--bg-primary);
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.business-card {
  background: var(--bg-secondary);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all 0.3s ease;
  border: 1px solid var(--bg-secondary);
  box-shadow: var(--shadow-md);
}

.business-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.business-icon {
  width: 80px;
  height: 80px;
  background: var(--primary-color) !important;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  color: var(--text-white) !important;
  font-size: 1.8rem;
}

.business-card h3 {
  color: var(--text-primary); /* 黑色标题 */
  margin-bottom: var(--spacing-sm);
  font-size: 1.2rem;
  font-weight: 600;
}

.business-card p {
  color: var(--text-secondary); /* 灰色文字 */
  line-height: 1.6;
  font-size: 0.95rem;
}

/* 联系我们 */
.contact {
  background: var(--bg-gradient-purple);
  color: var(--text-white);
}

.contact .section-header h2 {
  color: var(--text-white);
  background: none;
  -webkit-background-clip: unset;
  -webkit-text-fill-color: unset;
  background-clip: unset;
}

.contact .section-header p {
  color: var(--text-white);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xxl);
  align-items: start;
}

.contact-info h3 {
  font-size: 1.8rem;
  margin-bottom: var(--spacing-lg);
  color: var(--text-white); /* 标题改为白色 */
}

.contact-details {
  margin-bottom: var(--spacing-lg);
}

.detail-item {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-md);
  gap: var(--spacing-sm);
}

.detail-item i {
  width: 20px;
  color: var(--text-white);
}

.wechat-qr {
  text-align: center;
  margin-top: var(--spacing-lg);
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
}

.contact-form {
  background: rgba(255, 255, 255, 0.1);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}

.form-group {
  position: relative;
  margin-bottom: var(--spacing-md);
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  border: none;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.9);
  font-size: 1rem;
  color: var(--text-primary);
  transition: all 0.3s ease;
  appearance: none;
  font-family: inherit;
}

.form-group select option:disabled {
  color: #7f8c8d;
}

.form-group select option:not(:disabled) {
  color: var(--text-primary);
}

.form-group select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 1rem center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  padding-right: 3rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  background: white;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.btn-full {
  width: 100%;
  margin-top: var(--spacing-md);
}

/* 应用场景 */
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.scenario-category {
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  text-align: center;
  border: 1px solid var(--bg-secondary);
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
}

.scenario-category:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.scenario-category h3 {
  margin-bottom: var(--spacing-md);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.scenario-category ul {
  list-style: none;
}

.scenario-category li {
  padding: var(--spacing-xs) 0;
  border-bottom: 1px solid var(--bg-secondary);
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.scenario-category li:last-child {
  border-bottom: none;
}

/* 联系我们 */
.contact {
  background: var(--bg-gradient-purple);
  color: var(--text-white);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xxl);
  align-items: start;
}

.contact-info h3 {
  font-size: 1.8rem;
  margin-bottom: var(--spacing-lg);
  color: var(--text-white);
}

.contact-details {
  margin-bottom: var(--spacing-lg);
}

.detail-item {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-md);
  gap: var(--spacing-sm);
}

.detail-item i {
  width: 20px;
  color: var(--text-white);
}

.wechat-qr {
  text-align: center;
  margin-top: var(--spacing-lg);
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
}

.contact-form {
  background: rgba(255, 255, 255, 0.1);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}

.form-group {
  position: relative;
  margin-bottom: var(--spacing-md);
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  border: none;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.9);
  font-size: 1rem;
  color: var(--text-primary);
  transition: all 0.3s ease;
  appearance: none;
  font-family: inherit;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 1rem center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  padding-right: 3rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  background: white;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.btn-full {
  width: 100%;
  margin-top: var(--spacing-md);
}

/* 底部 */
.footer {
  background: #1a202c;
  color: #e2e8f0;
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
  color: white;
  margin-bottom: var(--spacing-md);
  font-size: 1.5rem;
}

.footer-section h3 span {
  color: var(--primary-color);
}

.footer-section h4 {
  color: var(--primary-color);
  margin-bottom: var(--spacing-md);
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: var(--spacing-xs);
}

.footer-section ul li a {
  color: #a0aec0;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-section ul li a:hover {
  color: var(--primary-color);
}

.footer-bottom {
  border-top: 1px solid #2d3748;
  padding-top: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: var(--spacing-lg);
}

.footer-links a {
  color: #a0aec0;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: var(--primary-color);
}

/* 返回顶部按钮 */
.scroll-top {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--bg-gradient-purple);
  color: var(--text-white);
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

/* 动画 */
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.2); opacity: 0.7; }
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .tech-features {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .evolution-stages {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .modes-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .business-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .scenarios-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .clients-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .about-content,
  .contact-content {
    grid-template-columns: 1fr;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .section-header h2 {
    font-size: 2rem;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 80px);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding-top: 2rem;
    transition: left 0.3s ease;
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .section-header h2 {
    font-size: 1.8rem;
  }
  
  .evolution-stages,
  .modes-grid,
  .features-grid,
  .cases-grid,
  .business-grid,
  .scenarios-grid {
    grid-template-columns: 1fr;
  }
  
  .clients-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
  
  .tech-features {
    grid-template-columns: 1fr;
  }
  
  .about-content,
  .contact-content {
    gap: var(--spacing-lg);
  }
  
  .hero-visual {
    display: none;
  }
  
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
  
  .contact-content {
    grid-template-columns: 1fr;
  }
}