.sb-banner{position:fixed;top:0;left:0;right:0;z-index:99999;background:#fff;padding:10px;display:flex;align-items:center;transform:translateY(-110%);transition:transform .3s ease;box-shadow:0 2px 12px rgba(0,0,0,.12);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif}.sb-banner.sb-show{transform:translateY(0)}.sb-banner .sb-icon{width:48px;height:48px;border-radius:10px;margin-right:12px}.sb-banner .sb-title{font-size:15px;font-weight:600}.sb-banner .sb-sub{font-size:13px;color:#555}.sb-banner .sb-open{margin-left:auto;background:#007aff;color:#fff;border:0;padding:8px 14px;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;text-decoration:none}.sb-banner .sb-close{background:0;border:0;font-size:20px;margin-left:8px;cursor:pointer;color:#666}@media(min-width:900px){.sb-banner{display:none}}