.install-prompt{left:16px;right:16px;bottom:calc(16px + var(--bottom-nav-height,64px) + env(safe-area-inset-bottom,0px));color:#fff;z-index:9999;background:#111827;border-radius:12px;justify-content:space-between;align-items:center;gap:10px;padding:12px 14px;display:flex;position:fixed;box-shadow:0 8px 28px #00000047}.install-prompt__text{font-size:13px;line-height:1.35;color:#fff!important;-webkit-text-fill-color:#fff!important}.install-prompt__actions{flex-shrink:0;align-items:center;gap:6px;display:flex}.install-prompt__cta{cursor:pointer;white-space:nowrap;border:none;border-radius:8px;padding:8px 12px;font-size:13px;font-weight:600;color:#fff!important;-webkit-text-fill-color:#fff!important;background:#22c55e!important}.install-prompt__dismiss{cursor:pointer;border:none;padding:4px 6px;font-size:20px;line-height:1;color:#ffffffd9!important;-webkit-text-fill-color:#ffffffd9!important;background:0 0!important}.install-sheet{padding:4px 20px calc(20px + env(safe-area-inset-bottom,0px));-webkit-overflow-scrolling:touch;flex-direction:column;display:flex;overflow-y:auto}.install-sheet__heading{color:#111827;margin:8px 0 6px;font-size:20px;font-weight:700}.install-sheet__intro{margin:0 0 16px;font-size:14px;line-height:1.5;color:#4b5563!important;-webkit-text-fill-color:#4b5563!important}.install-sheet__install-btn{width:100%;margin-bottom:18px}.install-sheet__guides{flex-direction:column;gap:14px;display:flex}.install-guide{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:14px 16px}.install-guide--active{background:#eff6ff;border-color:#2563eb}.install-guide__title{color:#111827;margin:0 0 8px;font-size:15px;font-weight:700}.install-guide__steps{flex-direction:column;gap:6px;margin:0;padding-left:20px;display:flex}.install-guide__steps li{color:#374151;font-size:14px;line-height:1.45}.install-guide__steps strong{color:#111827}.install-sheet__close-btn{width:100%;margin-top:20px}.install-help-item{cursor:pointer;text-align:left;background:0 0;border:none;align-items:center;gap:10px;width:100%;padding:4px 0;font-size:15px;font-weight:500;display:flex;color:#2563eb!important;-webkit-text-fill-color:#2563eb!important}.install-help-item__icon{font-size:18px;line-height:1}