* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background: #fff;
}

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

/* 按钮样式 */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, #7c3aed, #a855f7);
  color: white;
  box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(124, 58, 237, 0.4);
}

.btn-outline {
  background: transparent;
  color: #7c3aed;
  border: 2px solid #7c3aed;
}

.btn-outline:hover {
  background: #7c3aed;
  color: white;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 18px;
}

.btn-full {
  width: 100%;
}

/* 导航栏 */
.navbar {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(124, 58, 237, 0.1);
}

.nav-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo .brand {
  font-size: 24px;
  font-weight: bold;
  color: #7c3aed;
}

.nav-menu {
  display: flex;
  gap: 40px;
}

.nav-menu a {
  color: #333;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-menu a:hover {
  color: #7c3aed;
}

/* Hero区 */
.hero {
  min-height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.hero-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(45deg, transparent 40%, rgba(255,255,255,0.1) 50%, transparent 60%),
    linear-gradient(-45deg, transparent 40%, rgba(255,255,255,0.05) 50%, transparent 60%);
  background-size: 60px 60px;
  animation: pattern-move 20s linear infinite;
}

@keyframes pattern-move {
  0% { background-position: 0 0, 0 0; }
  100% { background-position: 60px 60px, -60px 60px; }
}

.hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 60px;
  padding: 120px 0 60px;
}

.hero-left {
  flex: 1;
  color: white;
}

.hero-left h1 {
  font-size: 4rem;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 1.5rem;
  margin-bottom: 16px;
  opacity: 0.9;
}

.hero-desc {
  font-size: 1.1rem;
  margin-bottom: 40px;
  opacity: 0.8;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 20px;
  margin-bottom: 30px;
}

.hero-note {
  opacity: 0.7;
}

.hero-note a {
  color: white;
  text-decoration: underline;
}

.hero-right {
  flex: 1;
}

.hero-image {
  width: 100%;
  height: 500px;
  object-fit: cover;
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

/* 功能展示 */
.features {
  padding: 100px 0;
  background: #f8fafc;
}

.features-header {
  text-align: center;
  margin-bottom: 80px;
}

.features-header h2 {
  font-size: 3rem;
  font-weight: 700;
  color: #1e293b;
  margin-bottom: 20px;
}

.features-header p {
  font-size: 1.2rem;
  color: #64748b;
}

.feature-showcase {
  display: flex;
  align-items: center;
  gap: 80px;
  margin-bottom: 100px;
}

.feature-showcase.reverse {
  flex-direction: row-reverse;
}

.feature-content {
  flex: 1;
}

.feature-icon {
  margin-bottom: 30px;
}

.feature-content h3 {
  font-size: 2rem;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 20px;
}

.feature-content p {
  font-size: 1.1rem;
  color: #64748b;
  margin-bottom: 30px;
  line-height: 1.7;
}

.feature-content ul {
  list-style: none;
  padding: 0;
}

.feature-content li {
  display: flex;
  align-items: center;
  padding: 8px 0;
  color: #475569;
}

.feature-content li:before {
  content: "✓";
  color: #7c3aed;
  font-weight: bold;
  margin-right: 12px;
}

.feature-visual {
  flex: 1;
}

.feature-visual img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* 系统演示 */
.system-demo {
  padding: 100px 0;
  background: white;
}

.demo-header {
  text-align: center;
  margin-bottom: 80px;
}

.demo-header h2 {
  font-size: 3rem;
  font-weight: 700;
  color: #1e293b;
  margin-bottom: 20px;
}

.demo-header p {
  font-size: 1.2rem;
  color: #64748b;
}

.demo-content {
  display: flex;
  align-items: center;
  gap: 80px;
}

.demo-left {
  flex: 1;
}

.demo-left h3 {
  font-size: 2rem;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 40px;
}

.demo-features {
  margin-bottom: 40px;
}

.demo-feature {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 30px;
}

.demo-icon {
  font-size: 2rem;
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #7c3aed, #a855f7);
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.demo-feature h4 {
  font-size: 1.2rem;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 8px;
}

.demo-feature p {
  color: #64748b;
  line-height: 1.6;
}

.demo-right {
  flex: 1;
}

.demo-screens {
  position: relative;
  height: 500px;
}

.screen {
  position: absolute;
  width: 300px;
  background: white;
  border-radius: 15px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
  overflow: hidden;
}

.screen-1 {
  top: 0;
  left: 0;
  z-index: 2;
}

.screen-2 {
  top: 60px;
  right: 0;
  z-index: 1;
}

.screen-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 20px;
  background: #f8fafc;
  border-bottom: 1px solid #e2e8f0;
}

.screen-dots {
  display: flex;
  gap: 6px;
}

.screen-dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #cbd5e1;
}

.screen-dots span:first-child {
  background: #ef4444;
}

.screen-dots span:nth-child(2) {
  background: #f59e0b;
}

.screen-dots span:last-child {
  background: #10b981;
}

.screen-title {
  font-weight: 600;
  color: #1e293b;
}

.screen-content {
  padding: 20px;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
}

.calendar-day {
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  background: #f1f5f9;
  color: #64748b;
  font-size: 14px;
}

.calendar-day.active {
  background: #7c3aed;
  color: white;
}

/* 关于我们 */
.about {
  padding: 100px 0;
  background: #f8fafc;
}

.about-content {
  display: flex;
  align-items: center;
  gap: 80px;
}

.about-left {
  flex: 1;
}

.about-left img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.about-right {
  flex: 1;
}

.about-right h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: #1e293b;
  margin-bottom: 30px;
}

.about-right p {
  font-size: 1.1rem;
  color: #64748b;
  line-height: 1.7;
  margin-bottom: 40px;
}

.about-stats {
  display: flex;
  gap: 40px;
  margin-bottom: 40px;
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: #7c3aed;
  margin-bottom: 8px;
}

.stat-label {
  color: #64748b;
  font-size: 1rem;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.about-feature h4 {
  font-size: 1.2rem;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 8px;
}

.about-feature p {
  color: #64748b;
  margin: 0;
}

/* 联系我们 */
.contact {
  padding: 100px 0;
  background: white;
}

.contact-content {
  display: flex;
  gap: 80px;
}

.contact-left {
  flex: 1;
}

.contact-left h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: #1e293b;
  margin-bottom: 20px;
}

.contact-left p {
  font-size: 1.1rem;
  color: #64748b;
  margin-bottom: 40px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 20px;
}

.contact-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, #7c3aed, #a855f7);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 4px;
}

.contact-item p {
  color: #64748b;
  margin: 0;
}

.contact-right {
  flex: 1;
}

.contact-form {
  background: #f8fafc;
  padding: 40px;
  border-radius: 20px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 15px;
  border: 2px solid #e2e8f0;
  border-radius: 10px;
  font-size: 16px;
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #7c3aed;
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* 页脚 */
.footer {
  background: #1e293b;
  color: white;
  padding: 60px 0 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}

.footer-section h4 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: white;
}

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

.footer-section li {
  margin-bottom: 10px;
}

.footer-section a {
  color: #94a3b8;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-section a:hover {
  color: #a855f7;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 20px;
  border-top: 1px solid #334155;
}

.footer-bottom p {
  color: #94a3b8;
  margin: 0;
}

.icp {
  color: #94a3b8;
  text-decoration: underline;
}

.icp:hover {
  color: #a855f7;
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .hero-content,
  .feature-showcase,
  .demo-content,
  .about-content,
  .contact-content {
    flex-direction: column;
    gap: 40px;
  }
  
  .feature-showcase.reverse {
    flex-direction: column;
  }
  
  .hero-left h1 {
    font-size: 3rem;
  }
  
  .features-header h2,
  .demo-header h2 {
    font-size: 2.5rem;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .hero-actions {
    flex-direction: column;
    gap: 15px;
  }
  
  .hero-left h1 {
    font-size: 2.5rem;
  }
  
  .about-stats {
    flex-direction: column;
    gap: 20px;
  }
  
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }
  
  .hero-left h1 {
    font-size: 2rem;
  }
  
  .features-header h2,
  .demo-header h2 {
    font-size: 2rem;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
}