/* WhatsApp Floating Widget —档位 C：仅 contact + 落地页 */
.wa-widget{position:fixed;bottom:24px;right:24px;z-index:9999;display:flex;align-items:center;justify-content:center;width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,#25D366,#128C7E);box-shadow:0 4px 16px rgba(37,211,102,.35);transition:transform .25s ease,box-shadow .25s ease,opacity .4s;cursor:pointer;border:0;outline:0}
.wa-widget:hover{transform:scale(1.08);box-shadow:0 6px 24px rgba(37,211,102,.45)}
.wa-widget:focus-visible{outline:3px solid var(--color-primary);outline-offset:3px}
.wa-widget svg{width:30px;height:30px;fill:#fff}
.wa-widget .wa-tooltip{position:absolute;right:64px;white-space:nowrap;background:var(--color-secondary,#1E293B);color:#fff;font-size:13px;padding:8px 14px;border-radius:6px;opacity:0;pointer-events:none;transform:translateX(8px);transition:opacity .3s ease,transform .3s ease}
.wa-widget:hover .wa-tooltip{opacity:1;transform:translateX(0)}
.wa-hide{opacity:0;pointer-events:none;transform:scale(.8)}
@media(max-width:767px){
.wa-widget{bottom:18px;right:18px;width:50px;height:50px}
.wa-widget svg{width:26px;height:26px}
.wa-widget .wa-tooltip{display:none}
}
@media(prefers-reduced-motion:reduce){
.wa-widget{transition:none}
}