.kefu-widget{--kefu-brand: #2563eb;--kefu-brand-strong: #1d4ed8;--kefu-brand-soft: #eff4ff;--kefu-ink: #172033;--kefu-ink-soft: #475467;--kefu-muted: #667085;--kefu-line: #e2e8f0;--kefu-bg: #ffffff;--kefu-bg-soft: #f8fafc;position:fixed;z-index:9999;right:24px;bottom:24px;color:var(--kefu-ink);font-family:MiSans,HarmonyOS Sans SC,Noto Sans SC,PingFang SC,Microsoft YaHei,sans-serif;font-size:14px;line-height:1.55}.kefu-backdrop{position:fixed;z-index:9998;top:0;right:0;bottom:0;left:0;background:#0f172a73;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);opacity:0;pointer-events:none;transition:opacity .2s ease}.kefu-backdrop.is-visible{opacity:1;pointer-events:auto}.kefu-bubble{display:inline-flex;align-items:center;justify-content:center;width:56px;height:56px;padding:0;border:none;border-radius:50%;background:linear-gradient(135deg,var(--kefu-brand) 0%,var(--kefu-brand-strong) 100%);color:#fff;cursor:pointer;box-shadow:0 12px 28px #2563eb52,0 4px 10px #0f172a1f;transition:transform .18s ease,box-shadow .18s ease}.kefu-bubble:hover{transform:translateY(-2px);box-shadow:0 16px 34px #2563eb61,0 6px 14px #0f172a29}.kefu-bubble:active{transform:translateY(0)}.kefu-bubble__icon{display:block}.kefu-bubble__icon--close,.kefu-widget.is-open .kefu-bubble__icon--chat{display:none}.kefu-widget.is-open .kefu-bubble__icon--close{display:block}.kefu-panel[hidden]{display:none}.kefu-panel{position:fixed;z-index:9999;top:50%;left:50%;translate:-50% -50%;width:min(730px,calc(100vw - 48px));height:min(76vh,calc(100dvh - 48px));min-height:360px;display:flex;flex-direction:column;overflow:hidden;border-radius:18px;background:var(--kefu-bg);box-shadow:0 24px 70px #0f172a3d,0 8px 20px #0f172a14;opacity:0;transform:scale(.95);pointer-events:none;transition:opacity .2s ease,transform .22s cubic-bezier(.22,1,.36,1)}.kefu-panel.is-visible{opacity:1;transform:scale(1);pointer-events:auto}.kefu-panel__header{display:flex;align-items:center;justify-content:space-between;padding:16px 18px;background:linear-gradient(135deg,var(--kefu-brand) 0%,var(--kefu-brand-strong) 100%);color:#fff}.kefu-panel__title strong{display:block;font-size:15px;font-weight:600;letter-spacing:.02em}.kefu-panel__title small{display:block;margin-top:2px;font-size:12px;color:#ffffffd1}.kefu-panel__close{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;padding:0;border:none;border-radius:50%;background:#ffffff2e;color:#fff;cursor:pointer;transition:background-color .16s ease,transform .16s ease}.kefu-panel__close:hover{background:#ffffff52}.kefu-panel__close:active{transform:scale(.92)}.kefu-panel__messages{flex:1 1 auto;min-height:0;padding:16px 14px;overflow-y:auto;background:var(--kefu-bg-soft);scrollbar-width:thin;scrollbar-color:#cbd5e1 transparent}.kefu-panel__messages::-webkit-scrollbar{width:6px}.kefu-panel__messages::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:3px}.kefu-panel__msg{display:flex;margin-bottom:12px}.kefu-panel__msg:last-child{margin-bottom:0}.kefu-panel__msg--user{justify-content:flex-end}.kefu-panel__msg--assistant{justify-content:flex-start}.kefu-panel__bubble{max-width:80%;padding:10px 14px;border-radius:14px;font-size:14px;line-height:1.6;word-break:break-word;white-space:pre-wrap}.kefu-panel__msg--user .kefu-panel__bubble{background:var(--kefu-brand);color:#fff;border-bottom-right-radius:4px}.kefu-panel__msg--assistant .kefu-panel__bubble{background:var(--kefu-bg);color:var(--kefu-ink);border:1px solid var(--kefu-line);border-bottom-left-radius:4px}.kefu-panel__status{margin:0;padding:6px 18px 0;font-size:12px;color:var(--kefu-muted);text-align:center}.kefu-panel__status[hidden]{display:none}.kefu-panel__input{flex:0 0 auto;display:flex;align-items:flex-end;gap:8px;padding:12px 14px 14px;border-top:1px solid var(--kefu-line);background:var(--kefu-bg)}.kefu-panel__input textarea{flex:1 1 auto;min-width:0;min-height:40px;max-height:96px;padding:9px 12px;border:1px solid var(--kefu-line);border-radius:12px;background:var(--kefu-bg-soft);color:var(--kefu-ink);font:inherit;font-size:14px;line-height:1.5;resize:none;outline:none;transition:border-color .16s ease,background-color .16s ease}.kefu-panel__input textarea::placeholder{color:var(--kefu-muted)}.kefu-panel__input textarea:focus{border-color:var(--kefu-brand);background:var(--kefu-bg)}.kefu-panel__input textarea:disabled{cursor:not-allowed;opacity:.7}.kefu-panel__send{flex:0 0 auto;min-width:64px;height:40px;padding:0 14px;border:none;border-radius:12px;background:linear-gradient(135deg,var(--kefu-brand) 0%,var(--kefu-brand-strong) 100%);color:#fff;font:inherit;font-size:14px;font-weight:500;cursor:pointer;transition:transform .16s ease,box-shadow .16s ease,opacity .16s ease}.kefu-panel__send:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 14px #2563eb47}.kefu-panel__send:active:not(:disabled){transform:translateY(0)}.kefu-panel__send:disabled{cursor:not-allowed;opacity:.65}.kefu-panel__human{flex:0 0 auto;height:40px;padding:0 10px;border:1px solid var(--kefu-line);border-radius:12px;background:var(--kefu-bg);color:var(--kefu-brand);font:inherit;font-size:13px;font-weight:500;white-space:nowrap;cursor:pointer;transition:border-color .16s ease,background-color .16s ease,opacity .16s ease}.kefu-panel__human:hover:not(:disabled){border-color:var(--kefu-brand);background:var(--kefu-brand-soft)}.kefu-panel__human:disabled{cursor:wait;opacity:.65}.kefu-wework{margin-top:10px;padding:12px;border:1px solid var(--kefu-line);border-radius:12px;background:var(--kefu-bg-soft);text-align:center}.kefu-wework__qr{display:block;width:132px;height:132px;margin:0 auto 8px;object-fit:contain;border-radius:8px;background:#fff}.kefu-wework__text{margin:0 0 8px;font-size:13px;color:var(--kefu-ink-soft);line-height:1.5}.kefu-wework__link{display:inline-block;padding:6px 14px;border-radius:999px;background:var(--kefu-brand);color:#fff;font-size:13px;font-weight:500;text-decoration:none;transition:background-color .16s ease}.kefu-wework__link:hover{background:var(--kefu-brand-strong)}@media (max-width: 480px){.kefu-widget{right:16px;bottom:16px}.kefu-panel{top:0;left:0;translate:0 0;width:100vw;height:100dvh;border-radius:0}}