/* CSS Variables for UI/UX PRO MAX Design */
:root {
  /* Colors - 深海蓝主题 */
  --color-deep-space: #0a1628;
  --color-deep-blue: #0f2744;
  --color-neon-blue: #00d4ff;
  --color-electric-purple: #8b5cf6;
  --color-teal: #06b6d4;
  --color-pink: #ec4899;
  --color-white: #ffffff;
  --color-gray-100: #f8fafc;
  --color-gray-200: #e2e8f0;
  --color-gray-300: #cbd5e1;
  --color-gray-700: #334155;
  --color-gray-800: #1e293b;
  --color-gray-900: #0f172a;
  --color-text-primary: #ffffff;
  --color-text-secondary: #94a3b8;
  --color-text-light: #cbd5e1;
  
  /* Gradients - PRO MAX */
  --gradient-deep-space: linear-gradient(135deg, #0a1628, #0f2744, #1e3a5f);
  --gradient-neon-pulse: radial-gradient(circle, rgba(0, 212, 255, 0.4), transparent 70%);
  --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
  --gradient-accent: linear-gradient(135deg, #00d4ff, #8b5cf6);
  --gradient-accent-hover: linear-gradient(135deg, #8b5cf6, #ec4899);
  --gradient-pink-purple: linear-gradient(135deg, #ec4899, #8b5cf6);
  --gradient-blue-teal: linear-gradient(135deg, #00d4ff, #06b6d4);
  --gradient-rainbow: linear-gradient(90deg, #00d4ff, #8b5cf6, #ec4899, #00d4ff);
  --gradient-primary: linear-gradient(135deg, #00d4ff, #8b5cf6);
  
  /* Spacing - PRO MAX */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  --spacing-5xl: 8rem;
  
  /* Border Radius - PRO MAX */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;
  --radius-2xl: 3rem;
  --radius-full: 9999px;
  
  /* Shadows - PRO MAX */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --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);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.5), 0 0 40px rgba(0, 212, 255, 0.3);
  --shadow-purple-glow: 0 0 20px rgba(139, 92, 246, 0.5), 0 0 40px rgba(139, 92, 246, 0.3);
  --shadow-pink-glow: 0 0 20px rgba(236, 72, 153, 0.5), 0 0 40px rgba(236, 72, 153, 0.3);
  
  /* Transitions - PRO MAX */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-ease-in-out: cubic-bezier(0.645, 0.045, 0.355, 1);
  --transition-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* Typography - PRO MAX */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  
  /* Z-index - PRO MAX */
  --z-index-dropdown: 1000;
  --z-index-sticky: 1020;
  --z-index-fixed: 1030;
  --z-index-modal-backdrop: 1040;
  --z-index-modal: 1050;
  --z-index-popover: 1060;
  --z-index-tooltip: 1070;
  --z-index-particles: -1;
  --z-index-glass: 1;
  --z-index-content: 10;
}

/* Global Reset and Base Styles - PRO MAX */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--font-primary);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-deep-space);
  overflow-x: hidden;
  position: relative;
}

/* Typography - PRO MAX */
h1, h2, h3, h4, h5, h6 {
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
  color: var(--color-white);
  letter-spacing: -0.025em;
}

h1 {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
}

h2 {
  font-size: clamp(2rem, 6vw, 3.5rem);
}

h3 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
}

h4 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
}

p {
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* Glassmorphism - PRO MAX */
.glass {
  background: var(--gradient-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

.glass-hover {
  transition: all var(--transition-slow);
}

.glass-hover:hover {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.1));
  box-shadow: 0 12px 48px 0 rgba(0, 0, 0, 0.45), var(--shadow-glow);
  transform: translateY(-2px);
  border-color: rgba(0, 212, 255, 0.3);
}

/* Gradient Text - PRO MAX */
.gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% auto;
  animation: gradient-flow 3s linear infinite;
}

.gradient-text-rainbow {
  background: var(--gradient-rainbow);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 300% auto;
  animation: gradient-flow 2s linear infinite;
}

/* Animations - PRO MAX */
@keyframes gradient-flow {
  0% {
    background-position: 0% 50%;
  }
  100% {
    background-position: 200% 50%;
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    transform: scale(1.05);
  }
}

@keyframes rotate {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: var(--shadow-glow);
  }
  50% {
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.7), 0 0 60px rgba(0, 212, 255, 0.5);
  }
}

@keyframes ripple {
  0% {
    transform: scale(0);
    opacity: 1;
  }
  100% {
    transform: scale(4);
    opacity: 0;
  }
}

@keyframes slide-in-up {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slide-in-left {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slide-in-right {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes typing {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

@keyframes blink {
  50% {
    border-color: transparent;
  }
}

/* Container - PRO MAX */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Buttons - PRO MAX */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all var(--transition-slow);
  text-align: center;
  white-space: nowrap;
  font-family: inherit;
  letter-spacing: -0.01em;
  position: relative;
  overflow: hidden;
  transform: translateZ(0);
  box-shadow: var(--shadow-md);
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

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

.btn-primary:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: var(--shadow-xl), var(--shadow-glow), 0 0 40px rgba(0, 212, 255, 0.4);
  animation: glow 2s ease-in-out infinite;
}

.btn-secondary {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255, 255, 255, 0.2);
  box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
  transform: translateY(-3px) scale(1.05);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-xl), 0 0 40px rgba(255, 255, 255, 0.2);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-neon-blue);
  border: 2px solid var(--color-neon-blue);
  box-shadow: none;
}

.btn-outline:hover {
  transform: translateY(-3px) scale(1.05);
  background: var(--color-neon-blue);
  color: var(--color-deep-space);
  box-shadow: var(--shadow-xl), 0 0 40px rgba(0, 212, 255, 0.4);
}

.btn-large {
  padding: 1.25rem 2.5rem;
  font-size: 1.25rem;
  border-radius: var(--radius-full);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.btn-small {
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  border-radius: var(--radius-full);
}

.btn-glow {
  animation: glow 2s ease-in-out infinite;
}

/* Button States - PRO MAX */
.btn:active {
  transform: translateY(-1px) scale(0.98);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: var(--shadow-sm);
}

.btn:disabled:hover {
  animation: none;
}

/* Forms - PRO MAX */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
  color: var(--color-white);
}

.form-input {
  width: 100%;
  padding: 1rem 1.25rem;
  font-size: 1rem;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-white);
  transition: all var(--transition-normal);
  font-family: inherit;
}

.form-input:focus {
  outline: none;
  border-color: var(--color-neon-blue);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1), var(--shadow-glow);
  transform: translateY(-2px);
}

.form-input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.form-textarea {
  resize: vertical;
  min-height: 150px;
}

/* Header Navigation - PRO MAX */
.header {
  background: var(--gradient-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  position: sticky;
  top: 0;
  z-index: var(--z-index-sticky);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg) 0;
}

.nav-logo {
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--color-white);
  text-decoration: none;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% auto;
  animation: gradient-flow 3s linear infinite;
  transition: all var(--transition-normal);
  position: relative;
  z-index: var(--z-index-content);
}

.nav-logo:hover {
  transform: scale(1.05);
}

.nav-logo::after {
  display: none;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-2xl);
  align-items: center;
}

.nav-links a {
  color: var(--color-white);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition-normal);
  position: relative;
  padding: var(--spacing-sm) 0;
  text-shadow: 0 0 5px rgba(255, 255, 255, 0.3);
}

.nav-links a:hover {
  color: var(--color-neon-blue);
  transform: translateY(-2px);
  text-shadow: 0 0 10px rgba(0, 212, 255, 0.7);
}

.nav-links a.active {
  color: var(--color-neon-blue);
  text-shadow: 0 0 10px rgba(0, 212, 255, 0.7);
}

.nav-buttons {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
}

/* Hero Section - PRO MAX */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: var(--gradient-deep-space);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-neon-pulse);
  animation: pulse 4s ease-in-out infinite;
  z-index: var(--z-index-particles);
}

.hero-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-4xl);
  position: relative;
  z-index: var(--z-index-content);
  max-width: 1280px;
  width: 100%;
  padding: 0 var(--spacing-2xl);
}

.hero-text {
  flex: 1;
  max-width: 600px;
  animation: slide-in-left 1s ease-out;
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 900;
  line-height: 1;
  margin-bottom: var(--spacing-lg);
  background: var(--gradient-rainbow);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 300% auto;
  animation: gradient-flow 3s linear infinite;
  position: relative;
  z-index: var(--z-index-content);
  text-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
}

.hero-subtitle {
  font-size: clamp(1rem, 3vw, 1.5rem);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-2xl);
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-xl);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-2xl);
}

.hero-image {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  animation: slide-in-right 1s ease-out;
}

.hero-visual {
  width: 100%;
  max-width: 500px;
  height: auto;
  border-radius: var(--radius-2xl);
  background: var(--gradient-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 60px 0 rgba(0, 0, 0, 0.5), var(--shadow-glow);
  padding: var(--spacing-4xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 8rem;
  animation: float 6s ease-in-out infinite, rotate 20s linear infinite;
  position: relative;
  overflow: hidden;
}

.hero-visual::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-accent);
  opacity: 0.1;
  animation: rotate 15s linear infinite reverse;
}

/* Cards - Updated for dark theme */
.card {
  background: var(--gradient-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md), 0 0 30px rgba(0, 212, 255, 0.1);
  padding: var(--spacing-2xl);
  transition: all var(--transition-normal);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow);
}

.card:hover {
  box-shadow: var(--shadow-xl), 0 0 40px rgba(0, 212, 255, 0.2);
  transform: translateY(-5px);
  border-color: rgba(0, 212, 255, 0.3);
}

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

.card-3d {
  transform-style: preserve-3d;
  perspective: 1000px;
  transition: all var(--transition-slow);
}

.card-3d:hover {
  transform: rotateX(5deg) rotateY(5deg) translateY(-10px);
}

.hover-lift {
  transition: all var(--transition-slow);
}

.hover-lift:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.animate-float {
  animation: float 6s ease-in-out infinite;
}

/* Features Section */
.features {
  padding: var(--spacing-2xl) 0;
}

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

.section-title h2 {
  font-size: 2.25rem;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.02em;
}

.section-title p {
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
  color: var(--color-text-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.feature-card {
  text-align: center;
  padding: var(--spacing-xl);
  background: var(--gradient-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md), 0 0 30px rgba(0, 212, 255, 0.1);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow);
}

.feature-card:hover {
  box-shadow: var(--shadow-xl), 0 0 40px rgba(0, 212, 255, 0.2);
  transform: translateY(-5px);
  border-color: rgba(0, 212, 255, 0.3);
}

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

.feature-icon {
  width: 70px;
  height: 70px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  font-size: 1.75rem;
  color: white;
  transition: all var(--transition-slow);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1) rotate(5deg);
  box-shadow: var(--shadow-glow);
}

/* Why Choose Us Section */
.why-choose {
  padding: var(--spacing-2xl) 0;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
}

.why-card {
  background: var(--gradient-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md), 0 0 30px rgba(0, 212, 255, 0.1);
  transition: all var(--transition-normal);
}

.why-card:hover {
  box-shadow: var(--shadow-xl), 0 0 40px rgba(0, 212, 255, 0.2);
  transform: translateY(-2px);
  border-color: rgba(0, 212, 255, 0.3);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--spacing-xl);
  background: var(--gradient-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md), 0 0 30px rgba(0, 212, 255, 0.1);
}

.comparison-table th,
.comparison-table td {
  padding: var(--spacing-lg);
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--color-white);
}

.comparison-table th {
  background: var(--gradient-glass);
  font-weight: 600;
  color: var(--color-neon-blue);
  text-shadow: 0 0 5px rgba(0, 212, 255, 0.5);
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table tr:hover {
  background: rgba(0, 212, 255, 0.05);
}

.comparison-table td {
  color: var(--color-text-light);
}

/* Testimonials Section */
.testimonials {
  padding: var(--spacing-2xl) 0;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
}

.testimonial-card {
  background: var(--gradient-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md), 0 0 30px rgba(0, 212, 255, 0.1);
  position: relative;
  transition: all var(--transition-normal);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-xl), 0 0 40px rgba(0, 212, 255, 0.2);
  transform: translateY(-2px);
  border-color: rgba(0, 212, 255, 0.3);
}

.testimonial-card::before {
  content: '"';
  font-size: 4rem;
  color: var(--color-neon-blue);
  position: absolute;
  top: var(--spacing-md);
  left: var(--spacing-md);
  opacity: 0.3;
  font-weight: 900;
}

.testimonial-text {
  font-style: italic;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-light);
  font-size: 0.95rem;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.author-avatar {
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: white;
}

.author-info h4 {
  margin-bottom: 0;
  font-size: 0.95rem;
  color: var(--color-white);
}

.author-info p {
  margin-bottom: 0;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

/* Pricing Section */
.pricing {
  padding: var(--spacing-2xl) 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
  max-width: 800px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--gradient-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md), 0 0 30px rgba(0, 212, 255, 0.1);
  padding: var(--spacing-xl);
  text-align: center;
  position: relative;
  transition: all var(--transition-normal);
}

.pricing-card:hover {
  box-shadow: var(--shadow-xl), 0 0 40px rgba(0, 212, 255, 0.2);
  transform: translateY(-2px);
  border-color: rgba(0, 212, 255, 0.3);
}

.pricing-card.featured {
  box-shadow: var(--shadow-xl), 0 0 40px rgba(0, 212, 255, 0.2);
  border: 2px solid var(--color-neon-blue);
  transform: none;
}

.pricing-card.featured::before {
  content: '最佳选择';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-primary);
  color: white;
  padding: var(--spacing-xs) var(--spacing-lg);
  border-radius: var(--radius-xl);
  font-size: 0.875rem;
  font-weight: 600;
}

.pricing-header {
  margin-bottom: var(--spacing-xl);
}

.pricing-price {
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--color-neon-blue);
  margin-bottom: var(--spacing-xs);
  letter-spacing: -0.02em;
}

.pricing-price span {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.pricing-features {
  list-style: none;
  margin-bottom: var(--spacing-xl);
}

.pricing-features li {
  padding: var(--spacing-sm) 0;
  color: var(--color-text-light);
  font-size: 0.95rem;
}

.pricing-features li::before {
  content: '✓';
  color: var(--color-neon-blue);
  font-weight: 800;
  margin-right: var(--spacing-sm);
}

/* FAQ Section */
.faq {
  padding: var(--spacing-2xl) 0;
}

.faq-item {
  margin-bottom: var(--spacing-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: var(--spacing-md);
}

.faq-question {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color var(--transition-fast);
}

.faq-question:hover {
  color: var(--color-neon-blue);
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--color-neon-blue);
  font-weight: 300;
  transition: transform var(--transition-fast);
  width: 20px;
  text-align: center;
}

.faq-question.active::after {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.5;
}

.faq-answer.active {
  max-height: 300px;
  margin-top: var(--spacing-sm);
}

/* Footer */
.footer {
  background-color: var(--color-deep-blue);
  color: white;
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
  color: white;
  margin-bottom: var(--spacing-md);
  font-size: 1.125rem;
}

.footer-section p,
.footer-section li {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-sm);
  font-size: 0.9rem;
}

.footer-links {
  list-style: none;
}

.footer-links a {
  color: var(--color-text-light);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-lg);
  text-align: center;
  color: var(--color-text-light);
  font-size: 0.85rem;
}

/* Features Page */
.features-page {
  padding: var(--spacing-2xl) 0;
}

.feature-section {
  margin-bottom: var(--spacing-2xl);
}

.feature-section h2 {
  margin-bottom: var(--spacing-lg);
}

.feature-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.feature-content:nth-child(even) {
  grid-template-columns: 1fr 1fr;
}

.feature-text {
  order: 1;
}

.feature-content:nth-child(even) .feature-text {
  order: 2;
}

.feature-image {
  order: 2;
  text-align: center;
}

.feature-content:nth-child(even) .feature-image {
  order: 1;
}

.feature-image img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.feature-image img:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

.feature-list {
  list-style: none;
  margin-bottom: var(--spacing-lg);
}

.feature-list li {
  padding: var(--spacing-sm) 0;
  color: var(--color-text-secondary);
  position: relative;
  padding-left: var(--spacing-2xl);
  font-size: 0.95rem;
}

.feature-list li::before {
  content: '✓';
  color: var(--color-neon-blue);
  font-weight: 800;
  position: absolute;
  left: var(--spacing-md);
}

/* Download Page */
.download-page {
  padding: var(--spacing-2xl) 0;
}

.download-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
  margin: var(--spacing-2xl) 0;
}

.step-card {
  background: var(--gradient-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md), 0 0 30px rgba(0, 212, 255, 0.1);
  text-align: center;
  position: relative;
  transition: all var(--transition-normal);
}

.step-card:hover {
  box-shadow: var(--shadow-xl), 0 0 40px rgba(0, 212, 255, 0.2);
  transform: translateY(-2px);
  border-color: rgba(0, 212, 255, 0.3);
}

.step-number {
  width: 45px;
  height: 45px;
  background: var(--gradient-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  margin: 0 auto var(--spacing-md);
  font-size: 1.125rem;
}

.system-requirements {
  background: var(--gradient-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  margin: var(--spacing-2xl) 0;
  box-shadow: var(--shadow-md), 0 0 30px rgba(0, 212, 255, 0.1);
}

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

/* Blog Page */
.blog-page {
  padding: var(--spacing-2xl) 0;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
  margin: var(--spacing-2xl) 0;
}

.blog-card {
  background: var(--gradient-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md), 0 0 30px rgba(0, 212, 255, 0.1);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.blog-card:hover {
  box-shadow: var(--shadow-xl), 0 0 40px rgba(0, 212, 255, 0.2);
  transform: translateY(-2px);
  border-color: rgba(0, 212, 255, 0.3);
}

.blog-image {
  width: 100%;
  height: 180px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: white;
}

.blog-content {
  padding: var(--spacing-xl);
}

.blog-meta {
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

.blog-title {
  margin-bottom: var(--spacing-md);
  font-size: 1.25rem;
  line-height: 1.3;
}

.blog-excerpt {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* Support Page */
.support-page {
  padding: var(--spacing-2xl) 0;
}

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

.support-section {
  margin-bottom: var(--spacing-2xl);
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.mb-0 {
  margin-bottom: 0;
}

.mb-4 {
  margin-bottom: var(--spacing-lg);
}

.mb-8 {
  margin-bottom: var(--spacing-2xl);
}

.mt-8 {
  margin-top: var(--spacing-2xl);
}

.mt-12 {
  margin-top: var(--spacing-3xl);
}

.py-8 {
  padding-top: var(--spacing-2xl);
  padding-bottom: var(--spacing-2xl);
}

.py-12 {
  padding-top: var(--spacing-2xl);
  padding-bottom: var(--spacing-2xl);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-deep-blue);
}

::-webkit-scrollbar-thumb {
  background: var(--color-gray-700);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-neon-blue);
}

/* Particle Canvas */
#particles-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: var(--z-index-particles);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-text h1 {
    font-size: 2.5rem;
  }
  
  .feature-content {
    grid-template-columns: 1fr;
  }
  
  .feature-text {
    order: 1;
  }
  
  .feature-image {
    order: 2;
    margin-top: var(--spacing-xl);
  }
  
  .support-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .hero-content {
    flex-direction: column;
    text-align: center;
  }
  
  .hero-text h1 {
    font-size: 2rem;
  }
  
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .pricing-card.featured {
    transform: none;
  }
}

@media (max-width: 480px) {
  .hero-text h1 {
    font-size: 1.75rem;
  }
  
  .btn-large {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
  }
  
  .pricing-price {
    font-size: 2rem;
  }
}