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

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #1a1a2e;
  --bg-card-hover: #22223a;
  --text-primary: #f0f0f5;
  --text-secondary: #a0a0b8;
  --text-muted: #6b6b80;
  --accent: #7c3aed;
  --accent-light: #a78bfa;
  --accent-glow: rgba(124, 58, 237, 0.3);
  --gradient-hero: linear-gradient(135deg, #0a0a0f 0%, #1a1030 50%, #0d0d1a 100%);
  --gradient-accent: linear-gradient(135deg, #7c3aed, #4f46e5);
  --gradient-card: linear-gradient(180deg, rgba(124, 58, 237, 0.08) 0%, transparent 100%);
  --border: 1px solid rgba(255, 255, 255, 0.06);
  --border-light: 1px solid rgba(255, 255, 255, 0.1);
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(124, 58, 237, 0.15);
  --transition: 0.3s ease;
  --max-width: 1200px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--accent-light);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--accent);
}

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

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 0.5rem;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 3rem;
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: var(--border);
  transition: background var(--transition);
}

.nav.scrolled {
  background: rgba(10, 10, 15, 0.95);
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.3);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.nav-logo {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

.nav-logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-links .nav-cta {
  background: var(--gradient-accent);
  color: #fff;
  padding: 10px 24px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: transform var(--transition), box-shadow var(--transition);
}

.nav-links .nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(124, 58, 237, 0.4);
  color: #fff;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

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

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

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

/* ============================================
   HERO
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  padding: 120px 24px 80px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 50% 0%, var(--accent-glow) 0%, transparent 60%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-badge {
  display: inline-block;
  background: rgba(124, 58, 237, 0.15);
  color: var(--accent-light);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 20px;
  border-radius: 50px;
  margin-bottom: 24px;
  border: 1px solid rgba(124, 58, 237, 0.25);
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -1px;
  background: linear-gradient(135deg, #fff, #c4b5fd);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: 0 4px 20px rgba(124, 58, 237, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(124, 58, 237, 0.5);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-outline:hover {
  border-color: var(--accent);
  background: rgba(124, 58, 237, 0.08);
  color: var(--text-primary);
}

.store-badges {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.store-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: var(--border);
  padding: 10px 24px;
  border-radius: 50px;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.store-badge:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
  color: var(--text-primary);
}

.store-badge svg {
  width: 20px;
  height: 20px;
}

/* ============================================
   FEATURES
   ============================================ */
.features {
  padding: 100px 0;
  background: var(--bg-primary);
  position: relative;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(124, 58, 237, 0.3);
  background: var(--bg-card-hover);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(124, 58, 237, 0.12);
  border-radius: 12px;
  margin-bottom: 20px;
  font-size: 1.4rem;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.2px;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ============================================
   PERFORMANCE
   ============================================ */
.performance {
  padding: 100px 0;
  background: var(--bg-secondary);
  position: relative;
}

.perf-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

.perf-card {
  text-align: center;
  padding: 40px 24px;
  background: var(--bg-card);
  border: var(--border);
  border-radius: var(--radius);
  transition: transform var(--transition);
}

.perf-card:hover {
  transform: translateY(-4px);
}

.perf-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.perf-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.perf-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ============================================
   IMPORTANT NOTICE
   ============================================ */
.notice {
  padding: 100px 0;
  background: var(--bg-primary);
}

.notice-card {
  background: var(--bg-card);
  border: var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 32px;
  max-width: 800px;
  margin: 0 auto;
}

.notice-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--accent-light);
}

.notice-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ============================================
   COMPATIBILITY
   ============================================ */
.compatibility {
  padding: 100px 0;
  background: var(--bg-secondary);
}

.compat-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
}

.compat-card {
  text-align: center;
  padding: 40px 24px;
  background: var(--bg-card);
  border: var(--border);
  border-radius: var(--radius);
}

.compat-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.compat-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.compat-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ============================================
   DISCLAIMER
   ============================================ */
.disclaimer {
  padding: 80px 0;
  background: var(--bg-primary);
}

.disclaimer-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.disclaimer-content h3 {
  font-size: 1.3rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-weight: 600;
}

.disclaimer-content p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: 48px 0;
  background: var(--bg-secondary);
  border-top: var(--border);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--text-primary);
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ============================================
   LEGAL PAGES
   ============================================ */
.legal-page {
  padding: 120px 24px 80px;
  background: var(--bg-primary);
  min-height: 100vh;
}

.legal-content {
  max-width: 800px;
  margin: 0 auto;
  background: var(--bg-card);
  border: var(--border);
  border-radius: var(--radius);
  padding: 48px;
}

.legal-content h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.legal-content .legal-date {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 32px;
}

.legal-content h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-top: 36px;
  margin-bottom: 12px;
  color: var(--accent-light);
  padding-top: 24px;
  border-top: var(--border);
}

.legal-content h2:first-of-type {
  margin-top: 24px;
  padding-top: 0;
  border-top: none;
}

.legal-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.legal-content ul {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 16px;
  padding-left: 24px;
}

.legal-content ul li {
  margin-bottom: 6px;
}

.legal-content strong {
  color: var(--text-primary);
  font-weight: 600;
}

.legal-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 24px;
  transition: color var(--transition);
}

.legal-back:hover {
  color: var(--text-primary);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 32px 24px;
    gap: 24px;
    border-bottom: var(--border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .legal-content {
    padding: 24px;
  }
}