.wechat-group-card{position:fixed;right:20px;bottom:20px;z-index:100;width:224px;border:1px solid #bbf7d0;border-radius:14px;background:#fff;box-shadow:0 12px 36px #0f172a1f;overflow:hidden;animation:group-qr-in .25s ease-out}
.wechat-group-toggle{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:46px;padding:10px 15px;background:#f0fdf4;color:#15803d;border:0;font-weight:700;font-size:15px;cursor:pointer;touch-action:manipulation}
.wechat-group-toggle:focus-visible{outline:3px solid #86efac;outline-offset:-3px}.wechat-group-content{padding:12px;text-align:center}.wechat-group-content img{display:block;width:100%;height:auto;max-height:240px;object-fit:contain;background:#fff;border-radius:6px;-webkit-user-select:auto;user-select:auto}.wechat-group-content p{margin:10px 0 4px;color:#334155;font-size:13px}.wechat-group-content small{display:block;font-size:11px;color:#64748b}.wechat-group-card.collapsed{width:142px}.wechat-group-card.collapsed .wechat-group-content{display:none}.wechat-group-card.collapsed .wechat-group-arrow{transform:rotate(180deg)}
body:has(.service-order-card:not(.hidden)) .wechat-group-card{bottom:280px}
@keyframes group-qr-in{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:600px){.wechat-group-card{right:12px;bottom:16px;bottom:calc(16px + env(safe-area-inset-bottom));width:180px;max-height:calc(100vh - 32px);overflow:auto}.wechat-group-content{padding:10px}.wechat-group-content img{max-height:180px}.wechat-group-toggle{min-height:44px;font-size:14px}.wechat-group-card.collapsed{width:126px}body:has(.service-order-card:not(.hidden)) .wechat-group-card{bottom:280px}}
@media(prefers-reduced-motion:reduce){.wechat-group-card{animation:none}}

/* Small screens place the group card after page content, never over Start. */
@media(max-width:980px){
 .wechat-group-card,.wechat-group-card.collapsed{position:relative;inset:auto;right:auto;bottom:auto;width:100%;max-width:320px;margin:18px 0 0 auto;max-height:none;overflow:hidden;z-index:auto;box-shadow:0 4px 16px #0f172a0a}
 body:has(.service-order-card:not(.hidden)) .wechat-group-card{bottom:auto}
 .wechat-group-content img{width:180px;max-width:100%;max-height:240px;margin:0 auto}
 .wechat-group-toggle{min-height:44px}
}