@media (max-width: 1080px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .goal-grid { grid-template-columns: 1fr; }
  .scheme-grid { grid-template-columns: 1fr; }
  .learn-grid { grid-template-columns: repeat(2, 1fr); }
  .dashboard-grid { grid-template-columns: 1fr; }
  .budget-layout { grid-template-columns: 1fr; }
  .calc-panel.active { grid-template-columns: 1fr; }
  .profile-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .header-actions { gap: 6px; overflow-x: auto; max-width: 60vw; }
  .header-actions .btn {
    padding: 9px 14px;
    font-size: 0.85rem;
  }
  #wn-lang-switcher {
    padding: 5px 6px !important;
    font-size: 0.75rem !important;
    max-width: 88px;
  }
  .brand { font-size: 1.1rem; }
  .brand-mark { width: 28px; height: 28px; font-size: 0.9rem; }
}

@media (max-width: 900px) {
  .main-nav { display: none; }
  .nav-toggle { display: block; }

  .main-nav.mobile-open {
    display: flex;
    position: fixed;
    top: var(--header-height);
    left: 0; right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: 18px 24px 26px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    gap: 4px;
    z-index: 99;
  }
  .main-nav.mobile-open a { padding: 10px 0; }

  .hero { padding: 44px 0; }
  .hero .container { grid-template-columns: 1fr; text-align: center; }
  .hero-sub { margin: 0 auto 30px; }
  .hero-actions { justify-content: center; }
  .hero-visual-card { order: -1; margin-bottom: 8px; }

  .problem-grid { grid-template-columns: 1fr; }
  .summary-grid { grid-template-columns: repeat(2, 1fr); }

  .app-shell { grid-template-columns: 1fr; }
  .app-sidebar {
    display: flex;
    overflow-x: auto;
    padding: 12px;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }
  .sidebar-nav { display: flex; gap: 6px; }
  .sidebar-nav a { white-space: nowrap; margin-bottom: 0; }
  .sidebar-divider { display: none; }
  .app-main { padding: 22px 18px; }
}

@media (max-width: 640px) {
  .feature-grid { grid-template-columns: 1fr; }
  .learn-grid { grid-template-columns: 1fr; }
  .summary-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-band { padding: 36px 22px; }
  .auth-card { padding: 28px 22px; }
  table { font-size: 0.82rem; }
  th, td { padding: 10px 8px; }
  .page-head-row { flex-direction: column; align-items: flex-start; }
  .btn-block-mobile { width: 100%; }
}