:root{color-scheme:dark;--bg:#060a17;--bg2:#0a1022;--ink:#eaf3ff;--muted:#9ba7bd;--line:#1a2744;--a:#4f80ec;--a-hover:#6c97f5}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}a{color:var(--ink)}header{display:flex;align-items:center;padding:16px 20px;border-bottom:1px solid var(--line)}header a{font-weight:800;text-decoration:none;letter-spacing:.02em}main{display:flex;justify-content:center;padding:56px 16px}.card{width:100%;max-width:460px;background:var(--bg2);border:1px solid var(--line);border-radius:16px;padding:28px}h1{margin:0 0 4px;font-size:26px}.sub{margin:0 0 22px;color:var(--muted)}.btn{display:flex;justify-content:space-between;align-items:center;gap:12px;width:100%;padding:14px 18px;margin:0 0 12px;border-radius:12px;border:1px solid var(--line);background:#0e1730;color:var(--ink);font:inherit;font-weight:700;text-decoration:none;cursor:pointer}.btn span{color:var(--muted);font-weight:500;font-size:14px}.btn.primary{background:var(--a);border-color:var(--a)}.btn.primary span{color:#dbe7ff}.btn:hover{border-color:var(--a-hover)}.btn:disabled{opacity:.6;cursor:default}label{display:block;margin:0 0 8px;color:var(--muted);font-size:14px}input{width:100%;padding:13px 14px;margin:0 0 16px;border-radius:12px;border:1px solid var(--line);background:var(--bg);color:var(--ink);font:16px ui-monospace,Consolas,monospace}input:focus{outline:2px solid var(--a)}.back{display:inline-block;margin-top:6px;color:var(--muted);font:inherit;font-size:14px;background:none;border:0;padding:0;cursor:pointer}.help{margin:18px 0;padding-top:14px;border-top:1px solid var(--line);color:var(--muted);font-size:14px}.small{font-size:13px;color:var(--muted)}#status{font-size:14px;overflow-wrap:anywhere}[hidden]{display:none!important}.fbx-info{margin:-12px 0 20px}.fbx-info>summary{list-style:none;cursor:pointer;display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:14px}.fbx-info>summary::-webkit-details-marker{display:none}.fbx-info>summary b{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:50%;border:1px solid var(--line);font:700 12px/1 Georgia,serif;font-style:italic;color:var(--ink)}.fbx-info[open]>summary{margin-bottom:8px}.fbx-info>div{padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:#0e1730;font-size:13px;color:var(--muted)}.fbx-info>div p{margin:0 0 8px}.fbx-info>div p:last-child{margin:0}