#wchat{position:fixed;right:18px;bottom:18px;z-index:2500;font-family:var(--font,system-ui,sans-serif)}
#wcBtn{display:flex;align-items:center;gap:10px;height:52px;padding:0 20px 0 8px;border:0;border-radius:26px;background:var(--accent,#86672A);color:var(--accent-ink,#fff);font-weight:800;font-size:15px;cursor:pointer;box-shadow:0 8px 24px rgba(0,0,0,.28)}
#wcBtn .wc-ic{display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.22);font-size:18px}
#wcBtn.on{display:none}
#wcBox{width:min(380px,calc(100vw - 24px));height:min(560px,calc(100vh - 36px));display:flex;flex-direction:column;background:var(--surface,#fff);color:var(--ink,#111);border:1px solid var(--line-2,#ddd);border-radius:16px;box-shadow:0 16px 48px rgba(0,0,0,.35);overflow:hidden}
#wcBox[hidden]{display:none}
.wc-h{position:relative;padding:12px 44px 12px 16px;background:var(--accent,#86672A);color:var(--accent-ink,#fff)}
.wc-h b{display:block;font-size:16px}.wc-h span{font-size:12px;opacity:.85}
.wc-h button{position:absolute;right:10px;top:8px;width:30px;height:30px;border:0;background:none;color:inherit;font-size:24px;cursor:pointer}
.wc-m{flex:1;overflow:auto;padding:14px;display:flex;flex-direction:column;gap:10px;background:var(--surface-2,#f6f6f6)}
.wc-b{display:flex;flex-direction:column;max-width:92%}
.wc-b.u{align-self:flex-end}
.wc-tx{padding:9px 13px;border-radius:14px;font-size:14px;line-height:1.45;background:var(--surface,#fff);border:1px solid var(--line,#e5e5e5)}
.wc-b.u .wc-tx{background:var(--accent,#86672A);color:var(--accent-ink,#fff);border-color:transparent}
.wc-c{display:flex;flex-direction:column;gap:8px;margin-top:8px}
.wc-card{background:var(--surface,#fff);border:1px solid var(--line-2,#ddd);border-radius:12px;padding:10px 12px}
.wc-n{display:block;font-size:13px;font-weight:700;color:var(--ink,#111);line-height:1.3}
.wc-p{display:flex;justify-content:space-between;align-items:center;margin-top:8px}
.wc-p b{font-size:16px}
.wc-p button{height:32px;padding:0 14px;border-radius:8px;border:1px solid var(--accent,#86672A);background:var(--accent-soft,#f4ecda);color:var(--accent,#86672A);font-weight:700;font-size:13px;cursor:pointer}
.wc-p button:disabled{opacity:.7}
.wc-q{display:flex;flex-wrap:wrap;gap:6px;padding:8px 12px 0;background:var(--surface-2,#f6f6f6)}
.wc-q[hidden]{display:none}
.wc-q button{border:1px solid var(--line-2,#ddd);background:var(--surface,#fff);color:var(--ink,#111);border-radius:16px;padding:6px 12px;font-size:12.5px;cursor:pointer}
.wc-f{display:flex;gap:8px;padding:10px 12px;border-top:1px solid var(--line,#e5e5e5);background:var(--surface,#fff)}
.wc-f input{flex:1;height:42px;padding:0 14px;border-radius:21px;border:1px solid var(--line-2,#ddd);background:var(--surface-2,#f6f6f6);color:var(--ink,#111);font-size:14px}
.wc-f button{width:42px;height:42px;border:0;border-radius:50%;background:var(--accent,#86672A);color:var(--accent-ink,#fff);cursor:pointer}
.wc-w{padding:6px 12px 10px;font-size:11px;color:var(--muted,#777);background:var(--surface,#fff)}
.wc-w a{color:var(--accent,#86672A)}
.wc-dots i{display:inline-block;width:6px;height:6px;margin:0 2px;border-radius:50%;background:var(--muted,#999);animation:wcd 1s infinite}
.wc-dots i:nth-child(2){animation-delay:.15s}.wc-dots i:nth-child(3){animation-delay:.3s}
@keyframes wcd{0%,80%,100%{opacity:.3}40%{opacity:1}}
@media(max-width:480px){#wchat{right:10px;bottom:10px}#wcBtn .wc-t{display:none}#wcBtn{padding:0 8px}}