@media (max-width: 600px) {
  body { overflow-x: hidden; }
  .nav-inner { padding: 12px 16px; }
  .logo-text { font-size: 1.1rem; }
  .nav-badge { font-size: 0.6rem; padding: 2px 8px; }
  .hero { padding: 90px 0 50px; overflow: hidden; }
  .hero h1 { font-size: 2rem; letter-spacing: -0.01em; }
  .hero-chip { font-size: 0.65rem; padding: 5px 12px; }
  .hero-sub { font-size: 0.9rem; margin-bottom: 36px; padding: 0 8px; }
  .hero-actions { flex-direction: column; align-items: stretch; gap: 10px; padding: 0 8px; }
  .btn { display: flex; width: 100%; box-sizing: border-box; justify-content: center; padding: 14px 20px; font-size: 0.9rem; }
  .features-grid { grid-template-columns: 1fr !important; }
  .feat-card { padding: 20px 16px; }
  .flow-steps { grid-template-columns: 1fr; }
  .flow-arrow { display: none; }
  .trust-val { font-size: 1.8rem; }
  .trust-inner { gap: 20px; }
  .swap-inner { grid-template-columns: 1fr; gap: 24px; }
  .cta-box { padding: 32px 16px; }
  .cta-actions { flex-direction: column; align-items: stretch; }
  .section-title { font-size: 1.5rem; margin-bottom: 28px; }
  .wrapper { padding: 0 16px; }
  .card { padding: 1.25rem; border-radius: 14px; }
  .coin-grid { grid-template-columns: repeat(2, 1fr); }
  .page { padding: 90px 16px 40px; }
  .grid { grid-template-columns: 1fr !important; gap: 1rem; }
  .step { padding: 0.6rem 0.75rem; font-size: 0.78rem; }
  .chat-shell { border-radius: 0; min-height: 100dvh; }
  .chat-header { padding: 0.75rem 1rem; flex-wrap: wrap; }
  .pgp-grid { grid-template-columns: 1fr; }
  .chat-inputbar { padding: 0.5rem; gap: 0.4rem; }
  footer { font-size: 0.7rem; padding: 1.5rem 1rem; }
}

@media (max-width: 600px) {
  .section-label { text-align: center; }
  .section-title { text-align: center; }
  .feat-card { text-align: center; }
  .flow-step { text-align: center; }
  h2, h3 { text-align: center; }
}

@media (max-width: 600px) {
  .hero-sub { font-size: 0.82rem !important; letter-spacing: -0.01em; }
}