.szfb-btn{position:fixed;left:16px;bottom:calc(env(safe-area-inset-bottom,0px) + 16px);z-index:25;width:46px;height:46px;border-radius:50%;display:grid;place-items:center;padding:0;border:2px solid var(--focus,#0a58b8);background:var(--panel,#f6f9fa);color:var(--focus,#0a58b8);box-shadow:0 4px 14px var(--shadow,rgba(8,24,36,.25));cursor:pointer;transition:background .15s,color .15s,transform .15s}
.szfb-btn:hover,.szfb-btn:focus-visible{background:var(--focus,#0a58b8);color:var(--panel,#fff)}
.szfb-btn:active{transform:scale(.94)}
.szfb-btn svg{width:26px;height:26px;display:block}
body.szfb .side{padding-bottom:80px}
.szfb-back{position:fixed;inset:0;z-index:2000;display:flex;align-items:center;justify-content:center;padding:16px;background:rgba(3,9,14,.6)}
.szfb-back[hidden]{display:none}
.szfb-box{width:min(460px,100%);max-height:calc(100vh - 32px);overflow:auto;background:var(--panel,#f6f9fa);color:var(--ink,#10283a);border:1px solid var(--line,#a7bcc8);border-radius:10px;box-shadow:0 18px 60px rgba(0,0,0,.45);padding:16px;font:15px/1.4 var(--font,"PT Sans","Segoe UI",Arial,sans-serif)}
.szfb-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:6px}
.szfb-head h2{margin:0;font:700 21px/1.1 var(--font-n,"PT Sans Narrow",Arial,sans-serif)}
.szfb-x{border:0;background:none;color:var(--ink2,#4b6577);font-size:24px;line-height:1;padding:2px 6px;cursor:pointer}
.szfb-x:hover{color:var(--focus,#0a58b8)}
.szfb-lead{margin:0 0 10px;color:var(--ink2,#4b6577);font-size:13.5px}
.szfb-ta{display:block;width:100%;min-height:140px;resize:vertical;padding:9px 10px;border:1px solid var(--line,#a7bcc8);border-radius:6px;background:var(--bg,#e8eef1);color:inherit;font:16px/1.4 var(--font,"PT Sans",Arial,sans-serif)}
.szfb-ta:focus{outline:2px solid var(--focus,#0a58b8);outline-offset:1px}
.szfb-err{min-height:18px;margin:6px 0 0;color:var(--danger,#a5402a);font-size:13px}
.szfb-row{display:flex;gap:8px;justify-content:flex-end;margin-top:8px}
.szfb-send,.szfb-cancel{border-radius:999px;padding:8px 18px;font:700 14px var(--font,"PT Sans",Arial,sans-serif);cursor:pointer}
.szfb-send{border:0;background:var(--focus,#0a58b8);color:var(--panel,#fff)}
.szfb-cancel{border:1px solid var(--line,#a7bcc8);background:none;color:inherit}
.szfb-cancel:hover{border-color:var(--focus,#0a58b8)}
.szfb-send:disabled{opacity:.6;cursor:default}
.szfb-guest{margin:8px 0 0;font-size:14px}
.szfb-res{text-align:center;padding:6px 2px 2px}
.szfb-res[hidden]{display:none}
.szfb-ok{width:64px;height:64px;margin:4px auto 10px;border-radius:50%;display:grid;place-items:center;background:var(--wts,#4a8a34);color:#fff;animation:szfbPop .35s cubic-bezier(.2,1.4,.4,1)}
.szfb-ok svg{width:36px;height:36px}
.szfb-res h3{margin:0 0 4px;font:700 30px/1.1 var(--font-n,"PT Sans Narrow",Arial,sans-serif)}
.szfb-rw{margin:14px 0 0;padding:14px 14px 12px;border:2px solid var(--focus,#0a58b8);border-radius:10px;background:var(--chip,#dbe6eb);text-align:center}
.szfb-rw-t{margin:0;font:700 17px/1.35 var(--font,"PT Sans",Arial,sans-serif)}
.szfb-rw-s{margin:6px 0 0;color:var(--ink2,#4b6577);font-size:13.5px}
.szfb-code{display:block;margin:12px 0 0;padding:12px 8px;border-radius:8px;border:2px dashed var(--focus,#0a58b8);background:var(--bg,#e8eef1);font:700 21px/1.25 Consolas,"SFMono-Regular",monospace;letter-spacing:.05em;user-select:all;overflow-wrap:anywhere}
.szfb-copybtn{margin-top:10px;width:100%;border:0;border-radius:999px;padding:10px 0;background:var(--focus,#0a58b8);color:var(--panel,#fff);font:700 15px var(--font,"PT Sans",Arial,sans-serif);cursor:pointer}
.szfb-copybtn.is-done{background:var(--wts,#4a8a34)}
.szfb-done{margin-top:12px;width:100%;border:1px solid var(--line,#a7bcc8);border-radius:999px;padding:9px 0;background:none;color:inherit;font:700 14px var(--font,"PT Sans",Arial,sans-serif);cursor:pointer}
.szfb-done:hover{border-color:var(--focus,#0a58b8)}
.szfb-promos{text-align:left}
.szfb-ptoggle{display:block;margin:0 auto;border:0;background:none;padding:0;color:var(--ink2,#4b6577);font:12.5px var(--font,Arial,sans-serif);text-decoration:underline;text-underline-offset:3px;cursor:pointer}
.szfb-ptoggle:hover{color:var(--focus,#0a58b8)}
.szfb-plist{margin-top:8px;display:grid;gap:6px}
.szfb-pr{padding:6px 8px;border:1px solid var(--line,#a7bcc8);border-radius:6px;background:var(--bg,#e8eef1)}
.szfb-pr code{display:block;font:700 12.5px Consolas,"SFMono-Regular",monospace;letter-spacing:.03em;overflow-wrap:anywhere}
.szfb-pr small{display:block;margin-top:2px;color:var(--ink2,#4b6577);font-size:11px}
.szfb-pact{margin-top:4px;display:flex;gap:12px}
.szfb-pact button{border:0;background:none;padding:0;color:var(--focus,#0a58b8);font:700 11.5px var(--font,Arial,sans-serif);cursor:pointer}
.szfb-res{text-align:center;padding:6px 2px 2px}
.szfb-res[hidden]{display:none}
.szfb-ok{width:64px;height:64px;margin:4px auto 10px;border-radius:50%;display:grid;place-items:center;background:var(--wts,#4a8a34);color:#fff;animation:szfbPop .35s cubic-bezier(.2,1.4,.4,1)}
.szfb-ok svg{width:36px;height:36px}
.szfb-res h3{margin:0 0 4px;font:700 30px/1.1 var(--font-n,"PT Sans Narrow",Arial,sans-serif)}
.szfb-rw{margin:14px 0 0;padding:14px 14px 12px;border:2px solid var(--focus,#0a58b8);border-radius:10px;background:var(--chip,#dbe6eb);text-align:center}
.szfb-rw-t{margin:0;font:700 17px/1.35 var(--font,"PT Sans",Arial,sans-serif)}
.szfb-rw-s{margin:6px 0 0;color:var(--ink2,#4b6577);font-size:13.5px}
.szfb-code{display:block;margin:12px 0 0;padding:12px 8px;border-radius:8px;border:2px dashed var(--focus,#0a58b8);background:var(--bg,#e8eef1);font:700 21px/1.25 Consolas,"SFMono-Regular",monospace;letter-spacing:.05em;user-select:all;overflow-wrap:anywhere}
.szfb-copybtn{margin-top:10px;width:100%;border:0;border-radius:999px;padding:10px 0;background:var(--focus,#0a58b8);color:var(--panel,#fff);font:700 15px var(--font,"PT Sans",Arial,sans-serif);cursor:pointer}
.szfb-copybtn.is-done{background:var(--wts,#4a8a34)}
.szfb-done{margin-top:12px;width:100%;border:1px solid var(--line,#a7bcc8);border-radius:999px;padding:9px 0;background:none;color:inherit;font:700 14px var(--font,"PT Sans",Arial,sans-serif);cursor:pointer}
.szfb-done:hover{border-color:var(--focus,#0a58b8)}
.szfb-promos{border-top:1px solid var(--line,#a7bcc8);padding-top:10px;text-align:left}
.szfb-promos h3{margin:0 0 6px;font:700 13px var(--font-n,Arial,sans-serif);color:var(--ink2,#4b6577)}
.szfb-pr{display:block;width:100%;margin:0 0 6px;padding:6px 8px;text-align:left;border:1px solid var(--line,#a7bcc8);border-radius:6px;background:var(--bg,#e8eef1);color:inherit;cursor:pointer}
.szfb-pr:hover{border-color:var(--focus,#0a58b8)}
.szfb-pr code{display:block;font:700 12.5px Consolas,"SFMono-Regular",monospace;letter-spacing:.03em;overflow-wrap:anywhere}
.szfb-pr small{display:block;margin-top:2px;color:var(--ink2,#4b6577);font-size:11px}
@keyframes szfbPop{from{transform:scale(.4);opacity:0}to{transform:none;opacity:1}}
@media (prefers-reduced-motion:reduce){.szfb-ok{animation:none}.szfb-btn{transition:none}}