:root {
  --primary-color: #4285F4;
  --primary-dark: #1967D2;
  --primary-darker: #0D47A1;
  --text-dark: #0D1117;
  --text-light: #e6e6e6;
  --border-radius: 16px;
  --transition: all 0.3s ease;
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  --shadow-hover: 0 8px 20px rgba(0, 0, 0, 0.2);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background: linear-gradient(135deg, #0d47a1, #42a5f5);
  background-attachment: fixed;
  min-height: 100vh;
}

.team-identifier {
  position: fixed;
  top: 2rem;
  left: 2rem;
  z-index: 1001;
  color: white;
  font-size: 1.4rem;
  font-weight: 700;
  background: rgba(13, 71, 161, 0.8);
  padding: 0.5rem 1.2rem;
  border-radius: 30px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.menu-toggle {
  position: fixed;
  top: 2rem;
  right: 2rem;
  width: 36px;
  height: 28px;
  cursor: pointer;
  z-index: 1001;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.menu-toggle span {
  display: block;
  height: 4px;
  width: 100%;
  background-color: white;
  border-radius: 3px;
  transition: var(--transition);
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(12px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-12px) rotate(-45deg);
}

.menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  height: 100vh;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  z-index: 1000;
  transition: var(--transition);
  padding: 7rem 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.menu.active {
  right: 0;
}

.menu ul {
  list-style: none;
  text-align: center;
}

.menu ul li {
  margin-bottom: 3rem;
}

.menu ul li a {
  text-decoration: none;
  color: rgba(255, 255, 255, 0.95);
  font-size: 2.5rem;
  font-weight: 600;
  transition: var(--transition);
  display: block;
  padding: 1rem 2rem;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 25px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.menu ul li a:hover {
  color: white;
  transform: scale(1.05);
  background: rgba(255, 255, 255, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.5);
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
}

.section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.section-container {
  width: 100%;
  max-width: 1400px;
  padding: 0 3rem;
  margin: 0 auto;
}

.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, #e8f0fe, #d2e3fc);
  color: var(--text-dark);
}

.hero-content {
  max-width: 900px;
  padding: 0 3rem;
}

.hero h1 {
  font-size: 4.5rem;
  font-weight: 800;
  margin-bottom: 2rem;
  line-height: 1.1;
  color: var(--primary-darker);
}

.hero p {
  font-size: 1.8rem;
  margin-bottom: 3rem;
  font-weight: 300;
  color: var(--primary-dark);
}

.cta-button {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
  border: none;
  padding: 1.4rem 3.5rem;
  font-size: 1.3rem;
  border-radius: 50px;
  cursor: pointer;
  transition: var(--transition);
  font-weight: 600;
  text-decoration: none;
  display: inline-block;
  will-change: transform;
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 50px;
  border: 2px solid rgba(25, 103, 210, 0.5);
  border-radius: 20px;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding-top: 5px;
}

.scroll-indicator span {
  display: block;
  width: 6px;
  height: 6px;
  background-color: var(--primary-dark);
  border-radius: 50%;
  animation: scrollIndicator 2s infinite;
}

@keyframes scrollIndicator {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(10px); opacity: 0.5; }
}

.features {
  padding: 8rem 0;
  text-align: center;
  background: linear-gradient(to bottom, #d2e3fc, #aecbfa);
  color: var(--text-dark);
}

.features h2 {
  font-size: 3.2rem;
  margin-bottom: 4rem;
  font-weight: 800;
  color: var(--primary-darker);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
  margin-top: 2rem;
}

.feature-card {
  background: rgba(255, 255, 255, 0.85);
  padding: 3rem 2.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  will-change: transform;
}

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

.feature-card h3 {
  font-size: 1.9rem;
  margin-bottom: 1.5rem;
  color: var(--primary-dark);
}

.feature-card p {
  color: var(--text-dark);
  font-size: 1.2rem;
  line-height: 1.8;
}

.pricing {
  padding: 8rem 0;
  text-align: center;
  background: linear-gradient(to bottom, #aecbfa, #8ab4f8);
  color: var(--text-dark);
}

.pricing h2 {
  font-size: 3.2rem;
  margin-bottom: 4rem;
  font-weight: 800;
  color: var(--primary-darker);
}

.table-container {
  max-width: 1400px;
  margin: 0 auto;
  overflow-x: auto;
  padding: 0 1.5rem;
  margin-top: 2rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
}

th, td {
  padding: 1.5rem;
  text-align: left;
  border-bottom: 1px solid rgba(0, 0, 0, 0.07);
}

th {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

tr:nth-child(even) {
  background-color: rgba(232, 240, 254, 0.6);
}

tr:hover {
  background-color: rgba(232, 240, 254, 0.9);
}

.buy-button {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
  text-decoration: none;
  padding: 0.8rem 1.5rem;
  border-radius: 30px;
  font-weight: 600;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
  white-space: nowrap;
}

.buy-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.pricing-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
  margin-top: 2rem;
}

.pricing-card {
  background: rgba(255, 255, 255, 0.9);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  transition: var(--transition);
  will-change: transform;
}

.pricing-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.pricing-card h3 {
  color: var(--primary-dark);
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
  text-align: center;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--primary-color);
}

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

.pricing-card ul li {
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.pricing-card ul li strong {
  color: var(--primary-dark);
}

.pricing-card .buy-button {
  display: block;
  width: 100%;
  padding: 1rem;
  font-size: 1rem;
}

.desktop-only {
  display: block;
}

.mobile-only {
  display: none;
}

.contact {
  padding: 8rem 0;
  text-align: center;
  background: linear-gradient(to bottom, #8ab4f8, var(--primary-color));
  color: white;
}

.contact h2 {
  font-size: 3.2rem;
  margin-bottom: 4rem;
  font-weight: 800;
}

.contact-info {
  max-width: 800px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.2);
  padding: 4rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  margin-top: 2rem;
}

.contact-info p {
  font-size: 1.5rem;
  margin: 2rem 0;
  font-weight: 300;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .team-identifier {
    font-size: 1.1rem;
    top: 1.2rem;
    left: 1.2rem;
  }
  
  .menu-toggle {
    top: 1.2rem;
    right: 1.2rem;
  }
  
  .hero h1 {
    font-size: 2.6rem;
  }
  
  .hero p {
    font-size: 1.2rem;
  }
  
  .cta-button {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
  }
  
  .features h2, .pricing h2, .contact h2 {
    font-size: 2.2rem;
  }
  
  .feature-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  th, td {
    padding: 1rem 0.8rem;
    font-size: 0.85rem;
  }
  
  .contact-info {
    padding: 2rem;
  }
  
  .contact-info p {
    font-size: 1.2rem;
  }
  
  .desktop-only {
    display: none;
  }
  
  .mobile-only {
    display: grid;
  }
  
  .pricing-cards {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .pricing-card {
    padding: 1.5rem;
  }
}

@media (max-width: 576px) {
  .hero h1 {
    font-size: 2.2rem;
  }
  
  .hero p {
    font-size: 1.1rem;
  }
  
  .features h2, .pricing h2, .contact h2 {
    font-size: 2rem;
  }
  
  .feature-card {
    padding: 2rem 1.5rem;
  }
  
  .contact-info {
    padding: 1.8rem;
  }
}