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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  color: #333;
  line-height: 1.7;
  background: #fff;
}

a {
  color: #4a90d9;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Header */
.header {
  background: #1a1a2e;
  color: #fff;
  padding: 20px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header .logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
}

.header nav a {
  color: rgba(255, 255, 255, 0.85);
  margin-left: 24px;
  font-size: 0.95rem;
}

.header nav a:hover {
  color: #fff;
  text-decoration: none;
}

/* Container */
.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  color: #fff;
  padding: 80px 0;
  text-align: center;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 16px;
  font-weight: 800;
}

.hero p {
  font-size: 1.2rem;
  opacity: 0.9;
  max-width: 500px;
  margin: 0 auto 32px;
}

.hero .badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 0.9rem;
}

/* Features */
.features {
  padding: 64px 0;
}

.features h2 {
  text-align: center;
  font-size: 1.8rem;
  margin-bottom: 48px;
  color: #1a1a2e;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-card {
  text-align: center;
  padding: 32px 20px;
  border-radius: 12px;
  background: #f8f9fa;
  transition: transform 0.2s;
}

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

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

.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: #1a1a2e;
}

.feature-card p {
  font-size: 0.9rem;
  color: #666;
}

/* Download Section */
.download {
  background: #f8f9fa;
  padding: 48px 0;
  text-align: center;
}

.download h2 {
  font-size: 1.5rem;
  margin-bottom: 12px;
  color: #1a1a2e;
}

.download p {
  color: #666;
  margin-bottom: 24px;
}

.download .btn {
  display: inline-block;
  background: #1a1a2e;
  color: #fff;
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  transition: background 0.2s;
}

.download .btn:hover {
  background: #16213e;
  text-decoration: none;
}

/* Footer */
.footer {
  background: #1a1a2e;
  color: rgba(255, 255, 255, 0.7);
  padding: 32px 0;
  text-align: center;
  font-size: 0.85rem;
}

.footer-links {
  margin-bottom: 12px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  margin: 0 12px;
}

.footer-links a:hover {
  color: #fff;
}

/* Document Pages (Privacy, Terms) */
.document {
  padding: 48px 0 64px;
}

.document h1 {
  font-size: 2rem;
  color: #1a1a2e;
  margin-bottom: 8px;
}

.document .date {
  color: #888;
  font-size: 0.9rem;
  margin-bottom: 32px;
}

.document h2 {
  font-size: 1.3rem;
  color: #1a1a2e;
  margin-top: 36px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid #eee;
}

.document h3 {
  font-size: 1.1rem;
  color: #444;
  margin-top: 24px;
  margin-bottom: 8px;
}

.document p {
  margin-bottom: 12px;
  color: #444;
}

.document ul,
.document ol {
  margin: 8px 0 16px 24px;
  color: #444;
}

.document li {
  margin-bottom: 6px;
}

.document table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 0.9rem;
}

.document th,
.document td {
  border: 1px solid #ddd;
  padding: 10px 12px;
  text-align: left;
}

.document th {
  background: #f8f9fa;
  font-weight: 600;
  color: #1a1a2e;
}

.document .contact-info {
  background: #f8f9fa;
  padding: 20px;
  border-radius: 8px;
  margin-top: 24px;
}

/* Responsive */
@media (max-width: 768px) {
  .hero {
    padding: 48px 0;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

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

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .feature-card {
    padding: 24px 16px;
  }

  .document h1 {
    font-size: 1.5rem;
  }

  .document h2 {
    font-size: 1.15rem;
  }

  .header .container {
    flex-direction: column;
    gap: 12px;
  }

  .header nav a {
    margin-left: 16px;
  }

  .header nav a:first-child {
    margin-left: 0;
  }

  .document table {
    font-size: 0.8rem;
  }

  .document th,
  .document td {
    padding: 8px;
  }
}