/* 子页面通用样式 */
:root {
  --primary-color: #6c5ce7;
  --secondary-color: #a29bfe;
  --accent-color: #ff6b6b;
  --success-color: #00b894;
  --warning-color: #ff9800;
  --error-color: #f44336;
  --text-primary: #ffffff;
  --text-secondary: #b2b2b2;
  --text-muted: #888888;
  --bg-primary: #0a0a0a;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #2a2a2a;
  --bg-dark: #1a1a1a;
  --bg-card: #2a2a2a;
  --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  --gradient-secondary: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
  --gradient-accent: linear-gradient(135deg, #4caf50 0%, #45a049 100%);
  --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 10px 30px rgba(0, 0, 0, 0.15);
  --shadow-heavy: 0 10px 30px rgba(0, 0, 0, 0.3);
  --border-radius: 10px;
  --border-radius-large: 15px;
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
}

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

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: 1rem 0;
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--text-primary);
  font-size: 1.5rem;
  font-weight: 600;
  text-decoration: none;
}

.nav-logo i {
  color: var(--primary-color);
}

.nav-buttons {
  display: flex;
  gap: 1rem;
}

.nav-button {
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 25px;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.nav-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(108, 92, 231, 0.4);
}

/* 主要内容区域 */
.main-content {
  margin-top: 100px;
  padding: 2rem 0;
}

.hero-section {
  text-align: center;
  padding: 4rem 0;
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-card) 100%);
  border-radius: 20px;
  margin-bottom: 3rem;
}

.hero-title {
  font-size: 3rem;
  margin-bottom: 1rem;
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.status-badge {
  display: inline-block;
  background: rgba(46, 204, 113, 0.2);
  color: #2ecc71;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-weight: 500;
  margin-bottom: 2rem;
}

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: #2ecc71;
  border-radius: 50%;
  margin-right: 0.5rem;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* 功能特性区域 */
.features-section {
  margin: 3rem 0;
}

.section-title {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 3rem;
  color: var(--primary-color);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.feature-card {
  background: var(--bg-card);
  padding: 2rem;
  border-radius: 15px;
  text-align: center;
  transition: transform 0.3s ease;
  border: 1px solid rgba(255, 107, 53, 0.2);
}

.feature-card:hover {
  transform: translateY(-10px);
  border-color: rgba(255, 107, 53, 0.5);
}

.feature-icon {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 1.5rem;
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
}

/* 价格区域 */
.pricing-section {
  margin: 3rem 0;
  text-align: center;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.pricing-card {
  background: var(--bg-card);
  padding: 2rem;
  border-radius: 20px;
  position: relative;
  transition: transform 0.3s ease;
  border: 2px solid rgba(255, 255, 255, 0.1);
}

.pricing-card:hover {
  transform: translateY(-10px);
}

.pricing-card.featured {
  border-color: var(--primary-color);
  transform: scale(1.05);
}

.featured-badge {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
  color: white;
  padding: 0.5rem 1.5rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
}

.pricing-header h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.price-display {
  font-size: 2.5rem;
  color: var(--primary-color);
  font-weight: bold;
  margin-bottom: 2rem;
}

.price-period {
  color: var(--text-secondary);
  font-size: 1rem;
}

.pricing-features ul {
  list-style: none;
  text-align: left;
  margin-bottom: 2rem;
}

.pricing-features li {
  padding: 0.5rem 0;
  color: var(--text-secondary);
}

.pricing-features i {
  color: var(--primary-color);
  margin-right: 0.5rem;
}

.purchase-button {
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
  color: white;
  padding: 1rem 2rem;
  border: none;
  border-radius: 25px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
  width: 100%;
}

.purchase-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

.purchase-button.basic {
  background: linear-gradient(45deg, #95a5a6, #bdc3c7);
}

.purchase-button.premium {
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
}

.purchase-button.professional {
  background: linear-gradient(45deg, #f39c12, #e67e22);
}

/* 联系信息 */
.contact-section {
  text-align: center;
  padding: 3rem 0;
}

.contact-info {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.contact-item {
  background: var(--bg-card);
  padding: 1.5rem;
  border-radius: 10px;
  min-width: 200px;
}

.contact-item i {
  color: var(--primary-color);
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

/* 返回按钮 */
.back-button {
  position: fixed;
  top: 100px;
  left: 20px;
  background: rgba(255, 107, 53, 0.9);
  color: white;
  padding: 10px 15px;
  border-radius: 20px;
  text-decoration: none;
  transition: all 0.3s ease;
  z-index: 999;
}

.back-button:hover {
  background: rgba(255, 107, 53, 1);
  transform: translateX(-5px);
}

/* 视频展示区域 */
.video-section {
  margin: 3rem 0;
}

.video-container {
  background: var(--bg-card);
  padding: 2rem;
  border-radius: 20px;
  text-align: center;
}

.video-wrapper {
  position: relative;
  width: 640px;
  height: 480px;
  margin: 0 auto 1rem auto;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 15px;
}

.video-description {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-top: 1rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-info {
    flex-direction: column;
    align-items: center;
  }
  
  .video-wrapper {
    width: 320px !important;
    height: 240px !important;
  }
  
  /* 移动端优化 */
  .feature-card {
    padding: 1.5rem;
  }
  
  .feature-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
  }
  
  .feature-card h3 {
    font-size: 1.3rem;
  }
  
  .section-title {
    font-size: 1.8rem;
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  
  .pricing-card {
    padding: 1.5rem;
  }
  
  .price-display {
    font-size: 2rem;
  }
  
  .purchase-button {
    padding: 0.8rem 1.5rem;
    font-size: 1rem;
  }
}

/* 平板端优化 */
@media (max-width: 1024px) and (min-width: 769px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}