/* ===== CSS Variables ===== */
:root {
  --primary: #667eea;
  --primary-dark: #5568d3;
  --secondary: #764ba2;
  --accent-pink: #f093fb;
  --accent-red: #f5576c;
  --accent-blue: #4facfe;
  --accent-cyan: #00f2fe;
  
  --text-primary: #1a202c;
  --text-secondary: #4a5568;
  --text-light: #718096;
  --text-white: #ffffff;
  
  --bg-primary: #ffffff;
  --bg-secondary: #f7fafc;
  --bg-dark: #0f172a;
  --bg-darker: #020617;
  
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-warm: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
}

/* ===== Reset ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--bg-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-base);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

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

/* ===== Particle Background ===== */
#particleCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  opacity: 0.5;
}

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.5);
  transition: var(--transition-base);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-md);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  transition: var(--transition-base);
}

.logo:hover {
  transform: translateY(-2px);
}

.logo-icon {
  filter: drop-shadow(0 4px 8px rgba(102, 126, 234, 0.3));
}

.logo-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  position: relative;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition-base);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: var(--transition-base);
}

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

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.lang-selector {
  padding: 0.5rem 1rem;
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  background: white;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-base);
}

.lang-selector:hover {
  border-color: var(--primary);
}

.lang-selector:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  width: 28px;
  height: 28px;
  padding: 4px;
}

.mobile-toggle span {
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition-base);
}

.mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.mobile-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
  white-space: nowrap;
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.btn-block {
  width: 100%;
  justify-content: center;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-outline {
  border: 2px solid var(--border);
  color: var(--text-primary);
  background: white;
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(102, 126, 234, 0.05);
}

.btn-glass {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text-primary);
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-white {
  background: white;
  color: var(--primary);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.btn-glass-white {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: white;
}

.btn-glass-white:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(80px + var(--spacing-3xl)) 0 var(--spacing-3xl);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
  overflow: hidden;
}

.gradient-sphere {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.3;
  animation: float 20s ease-in-out infinite;
}

.sphere-1 {
  width: 500px;
  height: 500px;
  background: var(--gradient-primary);
  top: -250px;
  right: -250px;
  animation-delay: 0s;
}

.sphere-2 {
  width: 400px;
  height: 400px;
  background: var(--gradient-secondary);
  bottom: -200px;
  left: -200px;
  animation-delay: 7s;
}

.sphere-3 {
  width: 300px;
  height: 300px;
  background: var(--gradient-accent);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: 14s;
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(30px, -30px) scale(1.1);
  }
  66% {
    transform: translate(-20px, 20px) scale(0.9);
  }
}

.grid-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(rgba(102, 126, 234, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(102, 126, 234, 0.05) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  0% {
    transform: translate(0, 0);
  }
  100% {
    transform: translate(50px, 50px);
  }
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(102, 126, 234, 0.1);
  border: 1px solid rgba(102, 126, 234, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--primary);
  margin-bottom: var(--spacing-lg);
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.2);
  }
}

.hero-title {
  font-size: 4rem;
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.02em;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  display: inline-block;
}

.gradient-text::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

.hero-desc {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin-bottom: var(--spacing-2xl);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.stat {
  text-align: center;
}

.stat-value {
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-light);
}

/* ===== Dashboard Mockup ===== */
.dashboard-mockup {
  background: white;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  overflow: hidden;
  border: 1px solid var(--border-light);
  animation: float-gentle 6s ease-in-out infinite;
}

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

.mockup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  background: linear-gradient(to bottom, #f8fafc, white);
  border-bottom: 1px solid var(--border-light);
}

.mockup-dots {
  display: flex;
  gap: 0.5rem;
}

.mockup-dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--border);
}

.mockup-dots span:nth-child(1) {
  background: #ef4444;
}

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

.mockup-dots span:nth-child(3) {
  background: #10b981;
}

.mockup-title {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.mockup-actions svg {
  color: var(--text-light);
}

.mockup-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.metric-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
}

.metric-card:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

.metric-icon {
  font-size: 2rem;
}

.metric-info {
  flex: 1;
}

.metric-label {
  font-size: 0.875rem;
  color: var(--text-light);
  margin-bottom: 0.25rem;
}

.metric-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.metric-trend {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.875rem;
  font-weight: 600;
}

.metric-trend.up {
  color: #10b981;
}

.chart-container {
  height: 120px;
  background: white;
  border-radius: var(--radius-lg);
  padding: 1rem;
}

/* ===== Scroll Indicator ===== */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 0.6;
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(10px);
  }
}

.mouse {
  width: 24px;
  height: 36px;
  border: 2px solid var(--text-light);
  border-radius: 12px;
  position: relative;
}

.wheel {
  width: 4px;
  height: 8px;
  background: var(--text-light);
  border-radius: 2px;
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  animation: scroll 2s ease-in-out infinite;
}

@keyframes scroll {
  0%, 100% {
    top: 8px;
    opacity: 1;
  }
  50% {
    top: 16px;
    opacity: 0.5;
  }
}

.arrow {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.arrow span {
  width: 12px;
  height: 2px;
  background: var(--text-light);
  transform-origin: center;
}

.arrow span:nth-child(1) {
  transform: rotate(45deg) translateX(3px);
}

.arrow span:nth-child(2) {
  transform: rotate(-45deg) translateX(-3px);
}

/* ===== Section Styles ===== */
section {
  padding: var(--spacing-3xl) 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-3xl);
}

.section-badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(102, 126, 234, 0.1);
  border: 1px solid rgba(102, 126, 234, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.section-title {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.section-desc {
  font-size: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ===== Features Section ===== */
.features {
  background: var(--bg-secondary);
}

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

.feature-card {
  background: white;
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-light);
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

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

.feature-icon {
  margin-bottom: var(--spacing-md);
}

.feature-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.feature-desc {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.7;
}

.feature-list {
  margin-bottom: var(--spacing-md);
}

.feature-list li {
  position: relative;
  padding-left: 1.5rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
}

.feature-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}

.feature-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.875rem;
  transition: var(--transition-base);
}

.feature-link:hover {
  gap: 0.75rem;
}

/* ===== How It Works ===== */
.steps-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-lg);
  max-width: 1100px;
  margin: 0 auto;
}

.step {
  flex: 1;
  text-align: center;
  position: relative;
}

.step-number {
  font-size: 4rem;
  font-weight: 900;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.2;
  margin-bottom: -2rem;
}

.step-icon {
  margin-bottom: var(--spacing-md);
  display: inline-block;
  transition: var(--transition-base);
}

.step:hover .step-icon {
  transform: scale(1.1) rotate(5deg);
}

.step-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.step-desc {
  color: var(--text-secondary);
  line-height: 1.7;
}

.step-connector {
  flex-shrink: 0;
  width: 100px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.connector-arrow {
  font-size: 2rem;
  color: var(--primary);
  animation: arrow-move 2s ease-in-out infinite;
}

@keyframes arrow-move {
  0%, 100% {
    transform: translateX(0);
  }
  50% {
    transform: translateX(10px);
  }
}

/* ===== Pricing ===== */
.pricing {
  background: var(--bg-secondary);
}

.pricing-toggle {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: var(--spacing-2xl);
  padding: 0.5rem;
  background: white;
  border-radius: var(--radius-lg);
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
  box-shadow: var(--shadow-sm);
}

.toggle-btn {
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: var(--transition-base);
  position: relative;
}

.toggle-btn.active {
  background: var(--gradient-primary);
  color: white;
}

.discount-badge {
  position: absolute;
  top: -8px;
  right: -8px;
  padding: 0.25rem 0.5rem;
  background: var(--gradient-secondary);
  color: white;
  font-size: 0.625rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto;
}

.pricing-card {
  background: white;
  border-radius: var(--radius-2xl);
  padding: var(--spacing-xl);
  border: 2px solid var(--border-light);
  transition: var(--transition-base);
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.pricing-card.featured {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.5rem 1rem;
  background: var(--gradient-primary);
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pricing-header {
  text-align: center;
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-light);
  margin-bottom: var(--spacing-lg);
}

.plan-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.plan-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  margin-bottom: var(--spacing-sm);
}

.currency {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.amount {
  font-size: 4rem;
  font-weight: 900;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0 0.25rem;
}

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

.plan-desc {
  color: var(--text-secondary);
}

.plan-features {
  margin-bottom: var(--spacing-lg);
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0;
}

.plan-features li.excluded {
  opacity: 0.5;
}

/* ===== Security ===== */
.security-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.shield-animation {
  position: relative;
  animation: float-gentle 6s ease-in-out infinite;
}

.shield-bg {
  animation: pulse-shield 3s ease-in-out infinite;
}

@keyframes pulse-shield {
  0%, 100% {
    opacity: 0.1;
  }
  50% {
    opacity: 0.2;
  }
}

.shield-outline {
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  animation: draw-shield 2s ease-out forwards;
}

@keyframes draw-shield {
  to {
    stroke-dashoffset: 0;
  }
}

.shield-check {
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  animation: draw-check 1s ease-out 1s forwards;
}

@keyframes draw-check {
  to {
    stroke-dashoffset: 0;
  }
}

.security-features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.security-item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  transition: var(--transition-base);
}

.security-item:hover {
  transform: translateX(8px);
  box-shadow: var(--shadow-md);
}

.security-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
}

.security-info h4 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.security-info p {
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== CTA ===== */
.cta {
  background: var(--gradient-primary);
  color: white;
  text-align: center;
  padding: var(--spacing-3xl) 0;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  animation: rotate 20s linear infinite;
}

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

.cta-content {
  position: relative;
  z-index: 1;
}

.cta-title {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: var(--spacing-md);
}

.cta-desc {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xl);
  opacity: 0.9;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: var(--spacing-md);
}

.cta-note {
  font-size: 0.875rem;
  opacity: 0.8;
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-dark);
  color: white;
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

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

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: var(--spacing-md);
}

.footer-desc {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--spacing-md);
  line-height: 1.7;
}

.social-links {
  display: flex;
  gap: 0.75rem;
}

.social-links a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  transition: var(--transition-base);
}

.social-links a:hover {
  background: var(--gradient-primary);
  transform: translateY(-4px);
}

.footer-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition-base);
}

.footer-links a:hover {
  color: white;
  transform: translateX(4px);
}

.footer-bottom {
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.875rem;
}

/* ===== Modal ===== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
}

.modal.active {
  display: flex;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
}

.modal-content {
  position: relative;
  z-index: 1;
  width: 90%;
  max-width: 900px;
  background: white;
  border-radius: var(--radius-2xl);
  overflow: hidden;
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.5);
  border-radius: 50%;
  color: white;
  z-index: 1;
  transition: var(--transition-base);
}

.modal-close:hover {
  background: rgba(0, 0, 0, 0.8);
  transform: rotate(90deg);
}

.video-container {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* ===== Back to Top ===== */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  color: white;
  border-radius: 50%;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-base);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

/* ===== AOS Animations ===== */
[data-aos] {
  opacity: 0;
  transition-property: transform, opacity;
}

[data-aos].aos-animate {
  opacity: 1;
}

[data-aos="fade-up"] {
  transform: translateY(50px);
}

[data-aos="fade-up"].aos-animate {
  transform: translateY(0);
}

[data-aos="fade-left"] {
  transform: translateX(50px);
}

[data-aos="fade-left"].aos-animate {
  transform: translateX(0);
}

[data-aos="fade-right"] {
  transform: translateX(-50px);
}

[data-aos="fade-right"].aos-animate {
  transform: translateX(0);
}

[data-aos="zoom-in"] {
  transform: scale(0.9);
}

[data-aos="zoom-in"].aos-animate {
  transform: scale(1);
}

/* ===== RTL 支持 (阿拉伯语) ===== */
html[dir="rtl"] .nav-content {
  flex-direction: row-reverse;
}
html[dir="rtl"] .nav-menu {
  flex-direction: row-reverse;
}
html[dir="rtl"] .nav-actions {
  flex-direction: row-reverse;
}
html[dir="rtl"] .hero .container {
  direction: rtl;
}
html[dir="rtl"] .hero-title,
html[dir="rtl"] .hero-desc,
html[dir="rtl"] .hero-badge {
  text-align: right;
}
html[dir="rtl"] .hero-actions {
  flex-direction: row-reverse;
}
html[dir="rtl"] .hero-stats {
  direction: rtl;
}
html[dir="rtl"] .feature-list li {
  padding-left: 0;
  padding-right: 1.5rem;
}
html[dir="rtl"] .feature-list li::before {
  left: auto;
  right: 0;
}
html[dir="rtl"] .footer-content {
  direction: rtl;
}
html[dir="rtl"] .footer-bottom {
  flex-direction: row-reverse;
}

/* 语言选择器 - 优化样式 */
.lang-selector {
  font-size: 0.875rem;
  color: var(--text-secondary);
  min-width: 90px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
  }
  
  .hero-visual {
    order: -1;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
  }
  
  .security-content {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-menu,
  .nav-actions {
    display: none;
  }
  
  .mobile-toggle {
    display: flex;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .steps-container {
    flex-direction: column;
  }
  
  .step-connector {
    width: 2px;
    height: 50px;
    transform: rotate(90deg);
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .cta-actions {
    flex-direction: column;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}