@media (max-width: 900px) {
  html, body {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
    overscroll-behavior: none;          
    -webkit-text-size-adjust: 100%;     
    -webkit-tap-highlight-color: transparent;  
    touch-action: manipulation;         
  }

  body {
    background: transparent;
    color: #16233f;
    font: 15px/1.6 -apple-system, BlinkMacSystemFont, "PingFang SC",
          "Helvetica Neue", "Microsoft YaHei", Arial, sans-serif;
    -webkit-user-select: none;
    user-select: none;
    -webkit-font-smoothing: antialiased;
    display: flex;
    flex-direction: column;
  }

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

  
  .mn-topbar, .header.mn-topbar {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    z-index: 1000 !important;
    height: auto !important;
    padding-top: env(safe-area-inset-top, 0px) !important;
    flex: 0 0 auto;
  }
  .mn-topbar .header-content {
    min-height: 56px;
    padding-left: max(14px, env(safe-area-inset-left, 0px));
    padding-right: max(14px, env(safe-area-inset-right, 0px));
  }

  
  .main-content {
    flex: 1 1 auto;
    min-height: 0;                       
    overflow-y: auto;
    overflow-x: hidden;
    overscroll-behavior-y: contain;      
    -webkit-overflow-scrolling: touch;   
    touch-action: pan-y;
    margin: 0 auto;
    padding-top: calc(56px + env(safe-area-inset-top, 0px)) !important;
    padding-bottom: calc(32px + env(safe-area-inset-bottom, 0px)) !important;
    padding-left: max(14px, env(safe-area-inset-left, 0px));
    padding-right: max(14px, env(safe-area-inset-right, 0px));
    background: transparent;
  }
  
  .main-content::-webkit-scrollbar { display: none; width: 0; height: 0; }

  
  body { padding-top: 0 !important; }

  
  .bottom-nav {
    flex: 0 0 auto;
    padding-bottom: calc(12px + env(safe-area-inset-bottom, 0px));
    margin-bottom: 0;
  }
  .mn-footer {
    padding-bottom: calc(28px + env(safe-area-inset-bottom, 0px)) !important;
    margin-top: 24px;
  }
}

@media (max-width: 640px) {
  .reg-overlay, .pay-overlay, .modal-overlay, .mn-modal-bg {
    align-items: flex-end !important;
    padding: 0 !important;
    padding-top: env(safe-area-inset-top, 0px) !important;
  }
  .reg-modal, .pay-modal, .modal-content, .mn-modal, .wp-modal {
    width: 100% !important;
    max-width: 100% !important;
    max-height: 88% !important;         
    border-radius: 20px 20px 0 0 !important;
    margin: 0 !important;
  }
  
  .reg-body, .pay-body, .wp-body, .modal-body {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    overscroll-behavior-y: contain;
    -webkit-overflow-scrolling: touch;
    padding-bottom: calc(24px + env(safe-area-inset-bottom, 0px)) !important;
  }
  .reg-body::-webkit-scrollbar,
  .pay-body::-webkit-scrollbar,
  .wp-body::-webkit-scrollbar { display: none; width: 0; }

  
  .modal-close {
    width: 44px !important;
    height: 44px !important;
    min-width: 44px !important;
    min-height: 44px !important;
  }
}

button, a, .nav-item, .calc-tier, .dash-tier, .reg-tier,
.wallet-opt, .tab, .chip {
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.mn-btn-primary, .mn-btn-outline, .reg-submit, .dash-btn,
.experience-btn, .pay-copy, .reg-copy-btn, .inv-copy {
  min-height: 48px;
}
.nav-item { min-height: 56px; }

.compare-scroll, .dash-table-scroll, .inv-table-scroll {
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
  touch-action: pan-x;
}

.mn-hero h1, .mn-node h4, .calc-out strong,
.dash-metric .dm-value, .inv-metric strong {
  overflow-wrap: break-word;
  word-break: break-word;
}

@media (max-height: 500px) and (orientation: landscape) {
  .mn-topbar .header-content { min-height: 44px; }
  .mn-hero { padding-top: 20px !important; padding-bottom: 16px !important; }
  .mn-hero h1 { font-size: 24px !important; }
}

@media (max-width: 640px) {
  input, select, textarea, .reg-input-wrap input,
  #dash-amount, #calc-amount, #reg-principal {
    font-size: 16px !important;
  }
}

@supports (padding: env(safe-area-inset-top)) {
  .mn-topbar {
    background: rgba(10,14,22,.92) !important;
    backdrop-filter: saturate(1.8) blur(14px) !important;
    -webkit-backdrop-filter: saturate(1.8) blur(14px) !important;
    border-bottom: 1px solid rgba(15,23,42,.06) !important;
  }
}