@media (max-width:520px){.landingPage{padding:18px!important}.landingCard{width:100%!important;max-width:440px!important;padding:20px!important;border-radius:20px!important}}.installPlatformToggle{display:flex;gap:4px;padding:4px;background:#eef2f7;border-radius:999px;margin:0 auto 8px;width:-moz-fit-content;width:fit-content;font-size:13px}.installPlatformToggle button{border:0;background:transparent;padding:7px 16px;border-radius:999px;cursor:pointer;color:#64748b;font-weight:600}.installPlatformToggle button.active{background:#fff;color:#1d4ed8;box-shadow:0 1px 2px rgba(15,23,42,.08)}.installPlatformNote{text-align:center;font-size:12px;color:#64748b;margin:0 0 18px}.installTitle{font-size:20px;margin:0 0 4px;color:#0f172a;text-align:center;font-weight:700}.installSubhead{text-align:center;color:#334155;margin:0 0 18px;font-size:14px;line-height:1.45}.installSteps{display:flex;flex-direction:column;gap:12px}.installStep{border:1px solid rgba(148,163,184,.35);border-radius:16px;padding:16px;background:#fff;transition:opacity .2s ease}.installStep--locked{opacity:.55}.installStepHead{display:flex;align-items:center;gap:12px;margin-bottom:4px}.installStepBadge{flex:0 0 auto;width:28px;height:28px;border-radius:50%;background:#e0ecff;color:#1d4ed8;display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}.installStep--done .installStepBadge{background:#0ea5e9;color:#fff}.installStep--done .installStepBadge span{display:none}.installStep--done .installStepBadge:after{content:"✓";font-size:16px}.installStepTitle{font-weight:600;font-size:16px;color:#0f172a}.installStepDesc{color:#334155;font-size:14px;line-height:1.45;margin:6px 0 12px}.installStep--locked .installStepDesc,.installStep--locked .installStepTitle{color:#64748b}.installBtn{display:inline-flex;align-items:center;justify-content:center;width:100%;padding:13px 20px;border-radius:14px;background:linear-gradient(135deg,#1d4ed8,#2563eb 40%,#0ea5e9);color:#fff;font-weight:700;font-size:16px;border:0;cursor:pointer;text-decoration:none;box-sizing:border-box;box-shadow:0 14px 30px rgba(37,99,235,.22),inset 0 1px 0 hsla(0,0%,100%,.24);transition:transform .05s ease,filter .15s ease}.installBtn:hover{filter:brightness(1.04)}.installBtn:active{transform:translateY(1px)}.installBtn--disabled{background:#cbd5e1;color:#fff;cursor:not-allowed;box-shadow:none;pointer-events:none}.installStep--locked .installStepMeta{color:#94a3b8}.installStep--locked .installStepMeta a{color:#94a3b8;pointer-events:none}.installStepMeta{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:#64748b;margin-top:10px}.installStepMeta a{color:#1d4ed8;text-decoration:none;font-weight:600;pointer-events:auto}.installStepMeta a:hover{text-decoration:underline}.installStepMetaLinkOnly{color:#64748b;font-weight:600}.installWarn{display:flex;gap:10px;align-items:flex-start;background:#fff7ed;border:1px solid #fdba74;border-radius:12px;padding:10px 12px;font-size:13px;line-height:1.45;color:#7c2d12;margin-top:12px}.installWarn:before{content:"⚠";font-size:16px;line-height:1.3;flex-shrink:0}.installFooter{text-align:center;color:#64748b;font-size:12px;margin-top:18px;margin-bottom:0}.installStepFormLock{pointer-events:none;-webkit-user-select:none;-moz-user-select:none;user-select:none}