* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    background: #0f1220;
    color: #f5f7fb;
  }
  
  a {
    color: inherit;
    text-decoration: none;
  }
  
  .container {
    width: min(1100px, 90%);
    margin: 0 auto;
  }
  
  .site-header {
    position: sticky;
    top: 0;
    background: rgba(15, 18, 32, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
  
  .nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 0;
  }
  
  .logo {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.03em;
  }
  
  nav {
    display: flex;
    gap: 20px;
  }
  
  nav a {
    color: #d9deea;
    font-size: 0.95rem;
  }
  
  nav a:hover {
    color: #ffffff;
  }
  
  .hero,
  .support-hero {
    padding: 100px 0 70px;
    background:
      radial-gradient(circle at top left, rgba(95, 117, 255, 0.28), transparent 35%),
      radial-gradient(circle at top right, rgba(88, 220, 188, 0.22), transparent 30%);
  }
  
  .hero-content {
    max-width: 720px;
  }
  
  .eyebrow {
    color: #8ab4ff;
    font-weight: 600;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.8rem;
  }
  
  h1 {
    font-size: clamp(2.3rem, 5vw, 4.4rem);
    line-height: 1.08;
    margin-bottom: 18px;
  }
  
  h2 {
    font-size: 1.8rem;
    margin-bottom: 12px;
  }
  
  h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
  }
  
  .hero-text {
    font-size: 1.1rem;
    color: #c8d0e0;
    max-width: 640px;
  }
  
  .hero-buttons {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 28px;
  }
  
  .button {
    display: inline-block;
    padding: 12px 18px;
    border-radius: 12px;
    font-weight: 600;
    transition: 0.2s ease;
  }
  
  .button.primary {
    background: linear-gradient(135deg, #6a7cff, #57d7b6);
    color: #0f1220;
  }
  
  .button.primary:hover {
    transform: translateY(-1px);
  }
  
  .button.secondary {
    border: 1px solid rgba(255, 255, 255, 0.14);
    color: #f5f7fb;
  }
  
  .button.secondary:hover {
    background: rgba(255, 255, 255, 0.05);
  }
  
  .features,
  .support-content,
  .cta {
    padding: 70px 0;
  }
  
  .feature-grid,
  .support-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 28px;
  }
  
  .card,
  .cta-box {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    padding: 24px;
  }
  
  .card p,
  .cta-box p {
    color: #c8d0e0;
  }
  
  .cta-box {
    text-align: center;
  }
  
  .cta-box .button {
    margin-top: 18px;
  }
  
  .site-footer {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 22px 0;
  }
  
  .footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    color: #b6bfd1;
    font-size: 0.95rem;
  }
  
  .support-page {
    min-height: calc(100vh - 140px);
  }
  
  @media (max-width: 800px) {
    .feature-grid,
    .support-grid {
      grid-template-columns: 1fr;
    }
  
    .nav,
    .footer-content {
      flex-direction: column;
      align-items: flex-start;
    }
  
    h1 {
      font-size: 2.4rem;
    }
  }