:root {
  --bg-primary: #0A1628;
  --bg-secondary: #0F1E36;
  --bg-tertiary: #142644;
  --bg-elevated: #1A2F52;

  --accent-primary: #00D4FF;
  --accent-secondary: #00E5A0;
  --accent-tertiary: #7B61FF;
  --accent-warning: #FFB800;
  --accent-danger: #FF4757;
  --accent-success: #00E676;

  --gradient-primary-start: #00D4FF;
  --gradient-primary-end: #00E5A0;
  --gradient-secondary-start: #7B61FF;
  --gradient-secondary-end: #00D4FF;

  --text-primary: #FFFFFF;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-tertiary: rgba(255, 255, 255, 0.45);
  --text-accent: #00D4FF;

  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-bg-hover: rgba(255, 255, 255, 0.10);
  --glass-border: rgba(255, 255, 255, 0.10);
  --glass-border-light: rgba(255, 255, 255, 0.15);
  --glass-shadow: rgba(0, 0, 0, 0.3);

  --divider: rgba(255, 255, 255, 0.08);

  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-xxl: 24px;
  --radius-full: 999px;

  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;

  --space-xxs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 20px;
  --space-xl: 24px;
  --space-xxl: 32px;
  --space-xxxl: 40px;
  --space-huge: 48px;

  --max-width: 960px;
  --nav-height: 64px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-secondary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--text-accent);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

a:hover {
  opacity: 0.8;
}

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

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 100;
  background: rgba(10, 22, 40, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-lg);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  object-fit: cover;
}

.nav-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-link {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: var(--text-primary);
  opacity: 1;
}

.lang-switcher {
  display: flex;
  align-items: center;
  gap: 2px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  padding: 4px;
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-tertiary);
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
  background: none;
  text-decoration: none;
}

.lang-btn:hover {
  color: var(--text-secondary);
}

.lang-btn.active {
  background: rgba(0, 212, 255, 0.15);
  color: var(--accent-primary);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: var(--space-xs);
}

.mobile-toggle svg {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
}

main {
  padding-top: var(--nav-height);
}

.hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-xxxl) var(--space-lg);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at 30% 20%, rgba(0, 212, 255, 0.08) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 80%, rgba(0, 229, 160, 0.06) 0%, transparent 50%),
              radial-gradient(ellipse at 50% 50%, rgba(123, 97, 255, 0.04) 0%, transparent 60%);
  animation: heroGlow 15s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes heroGlow {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-2%, 3%) scale(1.05); }
  100% { transform: translate(2%, -2%) scale(1); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 640px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  padding: 6px 16px;
  font-size: 12px;
  font-weight: 500;
  color: var(--accent-primary);
  margin-bottom: var(--space-xl);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.hero-badge svg {
  width: 14px;
  height: 14px;
  stroke: var(--accent-primary);
  fill: none;
  stroke-width: 2;
}

.hero-icon {
  width: 96px;
  height: 96px;
  border-radius: var(--radius-xxl);
  margin: 0 auto var(--space-xl);
  box-shadow: 0 8px 32px rgba(0, 212, 255, 0.2),
              0 0 0 1px rgba(0, 212, 255, 0.1);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.hero h1 {
  font-size: clamp(36px, 6vw, 56px);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
  letter-spacing: -0.5px;
  margin-bottom: var(--space-md);
}

.hero-gradient-text {
  background: linear-gradient(135deg, var(--gradient-primary-start), var(--gradient-primary-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(16px, 2.5vw, 20px);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-xxl);
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 14px 32px;
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gradient-primary-start), var(--gradient-primary-end));
  color: var(--bg-primary);
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 6px 28px rgba(0, 212, 255, 0.45);
  transform: translateY(-1px);
  opacity: 1;
}

.btn-secondary {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-light);
  opacity: 1;
}

.btn svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding: var(--space-huge) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-xxl);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--space-sm);
}

.section-label svg {
  width: 16px;
  height: 16px;
  stroke: var(--accent-primary);
  fill: none;
  stroke-width: 2;
}

.section-title {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.3px;
  margin-bottom: var(--space-sm);
}

.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.7;
}

.glass-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
}

.glass-card:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-md);
}

.card-icon.cyan {
  background: rgba(0, 212, 255, 0.12);
}

.card-icon.green {
  background: rgba(0, 229, 160, 0.12);
}

.card-icon.purple {
  background: rgba(123, 97, 255, 0.12);
}

.card-icon.amber {
  background: rgba(255, 184, 0, 0.12);
}

.card-icon svg {
  width: 24px;
  height: 24px;
  stroke-width: 1.8;
  fill: none;
}

.card-icon.cyan svg { stroke: var(--accent-primary); }
.card-icon.green svg { stroke: var(--accent-secondary); }
.card-icon.purple svg { stroke: var(--accent-tertiary); }
.card-icon.amber svg { stroke: var(--accent-warning); }

.card-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  position: relative;
}

.steps-grid::before {
  content: '';
  position: absolute;
  top: 40px;
  left: calc(33.33% / 2);
  right: calc(33.33% / 2);
  height: 2px;
  background: linear-gradient(90deg, var(--gradient-primary-start), var(--gradient-primary-end));
  opacity: 0.3;
}

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

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: var(--space-md);
  position: relative;
  z-index: 1;
}

.step-number.n1 {
  background: linear-gradient(135deg, var(--gradient-primary-start), var(--gradient-primary-end));
  color: var(--bg-primary);
}

.step-number.n2 {
  background: linear-gradient(135deg, var(--gradient-secondary-start), var(--gradient-secondary-end));
  color: var(--bg-primary);
}

.step-number.n3 {
  background: linear-gradient(135deg, var(--gradient-primary-start), var(--accent-tertiary));
  color: var(--bg-primary);
}

.step-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-bottom: var(--space-sm);
}

.step-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--accent-primary);
  fill: none;
  stroke-width: 1.8;
}

.step-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.step-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.faq-list {
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.faq-item {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-item:hover {
  border-color: var(--glass-border-light);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-sans);
  gap: var(--space-md);
}

.faq-question svg {
  width: 20px;
  height: 20px;
  stroke: var(--text-tertiary);
  fill: none;
  stroke-width: 2;
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.faq-item.open .faq-question svg {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.open .faq-answer {
  max-height: 200px;
}

.faq-answer-inner {
  padding: 0 var(--space-lg) var(--space-md);
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.contact-section {
  text-align: center;
}

.contact-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xxl);
  padding: var(--space-xxl) var(--space-xl);
  max-width: 560px;
  margin: 0 auto;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.contact-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-xl);
  background: rgba(0, 212, 255, 0.12);
  margin-bottom: var(--space-lg);
}

.contact-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--accent-primary);
  fill: none;
  stroke-width: 1.8;
}

.contact-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.contact-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.contact-email {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 15px;
  font-weight: 600;
  color: var(--accent-primary);
  padding: 12px 24px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-full);
  transition: all 0.2s ease;
}

.contact-email:hover {
  background: rgba(0, 212, 255, 0.14);
  border-color: rgba(0, 212, 255, 0.35);
  opacity: 1;
}

.contact-email svg {
  width: 16px;
  height: 16px;
  stroke: var(--accent-primary);
  fill: none;
  stroke-width: 2;
}

footer {
  border-top: 1px solid var(--divider);
  padding: var(--space-xxl) var(--space-lg);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.footer-brand-icon {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-xs);
  object-fit: cover;
}

.footer-brand-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.footer-copy {
  font-size: 12px;
  color: var(--text-tertiary);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.footer-link {
  font-size: 13px;
  color: var(--text-tertiary);
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: var(--text-secondary);
  opacity: 1;
}

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.privacy-content {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--space-xxxl) var(--space-lg);
}

.privacy-content h1 {
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
  letter-spacing: -0.3px;
}

.privacy-updated {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: var(--space-xxl);
}

.privacy-section {
  margin-bottom: var(--space-xxl);
}

.privacy-section h2 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.privacy-section p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.privacy-section p:last-child {
  margin-bottom: 0;
}

.privacy-section ul {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
}

.privacy-section ul li {
  margin-bottom: var(--space-xs);
}

.privacy-section a {
  color: var(--accent-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.privacy-section a:hover {
  opacity: 0.8;
}

.privacy-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  margin-bottom: var(--space-md);
}

.privacy-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.privacy-card h3 svg {
  width: 18px;
  height: 18px;
  stroke: var(--accent-primary);
  fill: none;
  stroke-width: 2;
  flex-shrink: 0;
}

.privacy-card p,
.privacy-card ul {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.privacy-card ul {
  padding-left: var(--space-lg);
  margin-top: var(--space-xs);
}

.privacy-card ul li {
  margin-bottom: var(--space-xxs);
}

.privacy-placeholder {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xxxl) var(--space-xl);
  text-align: center;
}

.privacy-placeholder-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: var(--radius-xl);
  background: rgba(0, 212, 255, 0.12);
  margin-bottom: var(--space-lg);
}

.privacy-placeholder-icon svg {
  width: 32px;
  height: 32px;
  stroke: var(--accent-primary);
  fill: none;
  stroke-width: 1.5;
}

.privacy-placeholder h2 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.privacy-placeholder p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

@media (max-width: 768px) {
  .glass-grid {
    grid-template-columns: 1fr;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .steps-grid::before {
    display: none;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(10, 22, 40, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    flex-direction: column;
    padding: var(--space-md) var(--space-lg);
    gap: var(--space-sm);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-link {
    padding: var(--space-sm) 0;
    font-size: 15px;
  }

  .lang-switcher {
    align-self: center;
  }

  .mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .hero {
    min-height: 70vh;
    padding: var(--space-xxl) var(--space-lg);
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

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

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
  }
}