#fb-open{position:fixed;right:18px;bottom:120px;z-index:9997;width:54px;height:54px;border-radius:50%;background:#ff6b35;color:#fff;text-align:center;line-height:54px;font-size:22px;box-shadow:0 4px 16px rgba(255,107,53,.45);transition:transform .2s}
#fb-open:hover{transform:scale(1.08);color:#fff}
#fb-open span{position:absolute;right:60px;top:50%;transform:translateY(-50%);background:#ff6b35;color:#fff;font-size:12px;padding:4px 8px;border-radius:6px;white-space:nowrap;opacity:0;transition:opacity .2s}
#fb-open:hover span{opacity:1}
#fb-toast{position:fixed;right:18px;bottom:186px;z-index:9996;background:rgba(0,0,0,.78);color:#fff;font-size:12px;line-height:1.5;padding:8px 12px;border-radius:8px;display:none;max-width:62vw}
#fb-toast.show{display:block}
#fb-mask{position:fixed;left:0;top:0;right:0;bottom:0;background:rgba(0,0,0,.45);z-index:9998;display:none}
#fb-panel{position:fixed;z-index:9999;left:50%;top:50%;transform:translate(-50%,-50%);width:min(480px,92vw);max-height:88vh;overflow:auto;background:#fff;border-radius:12px;box-shadow:0 12px 40px rgba(0,0,0,.25);display:none;font:14px/1.6 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:#2d3748}
#fb-panel .fb-head{display:flex;justify-content:space-between;align-items:center;padding:14px 18px;border-bottom:1px solid #eee;font-weight:600;font-size:16px;color:#ff6b35}
#fb-panel .fb-head em{cursor:pointer;font-size:22px;color:#aaa;font-style:normal;line-height:1}
#fb-panel .fb-body{padding:6px 18px 18px}
#fb-panel label{display:block;margin:12px 0 6px;font-weight:600}
#fb-panel select,#fb-panel input[type=text],#fb-panel textarea{width:100%;box-sizing:border-box;border:1px solid #ddd;border-radius:8px;padding:9px 10px;font:14px inherit;font-family:inherit;color:#2d3748}
#fb-panel textarea{min-height:96px;resize:vertical}
#fb-cap{display:flex;gap:8px;align-items:center;margin-top:12px}
#fb-cap input{flex:1;margin:0}
#fb-cap-img{height:40px;border:1px solid #ddd;border-radius:8px;cursor:pointer;background:#f7f7f7}
#fb-shot{margin-top:12px;padding:10px 12px;background:#faf8f3;border-radius:8px}
#fb-shot label{margin:0;font-weight:400;display:flex;align-items:center;gap:6px;cursor:pointer}
#fb-shot img{max-width:100%;max-height:150px;border:1px solid #eee;border-radius:6px;margin-top:8px;display:block}
#fb-shotpv{font-size:12px;color:#888;margin-top:6px}
#fb-submit{margin-top:16px;width:100%;background:#ff6b35;color:#fff;border:0;border-radius:8px;padding:11px;font-size:15px;cursor:pointer}
#fb-submit:disabled{background:#f0b39d;cursor:not-allowed}
#fb-msg{margin-top:10px;font-size:13px;min-height:18px}
#fb-msg.ok{color:#2f855a}
#fb-msg.err{color:#c53030}
#fb-tip{margin-top:8px;font-size:12px;color:#999;word-break:break-all}
@media(max-width:640px){#fb-panel{width:94vw}#fb-open{bottom:96px;right:12px}}