#alv-help-fab { position:fixed; right:18px; bottom:18px; z-index:999998;
  width:48px; height:48px; border-radius:50%; border:0;
  background:#C49A3C; color:#fff; font:700 22px sans-serif; cursor:pointer;
  box-shadow:0 4px 14px rgba(0,0,0,0.25); }
#alv-help-fab:hover { background:#D9B560; }

#alv-help-wrap { position:fixed; inset:0; z-index:999999; display:none; }
.alv-help-bg { position:absolute; inset:0; background:rgba(0,0,0,0.55); }
.alv-help-modal { position:absolute; left:50%; top:50%; transform:translate(-50%,-50%);
  background:#fff; color:#1a1a1a; width:min(720px,94vw); max-height:88vh;
  border-radius:10px; box-shadow:0 20px 60px rgba(0,0,0,0.4); overflow:hidden;
  display:flex; flex-direction:column; }
.alv-help-head { padding:14px 18px; border-bottom:1px solid #e7e5e0;
  display:flex; align-items:center; gap:14px; flex-wrap:wrap; }
.alv-help-head h3 { margin:0; font:600 18px Georgia,serif; flex:1; min-width:200px; color:#1a1a1a; }
.alv-help-lang { display:flex; align-items:center; gap:4px; font:13px sans-serif; color:#666; }
.alv-help-lang button { background:#fff; border:1px solid #d1d5db; color:#1a1a1a;
  padding:4px 9px; border-radius:4px; font:600 12px sans-serif; cursor:pointer; }
.alv-help-lang button.active { background:#C49A3C; color:#fff; border-color:#C49A3C; }
.alv-help-close { background:none; border:0; font:300 28px sans-serif; cursor:pointer;
  color:#666; line-height:1; padding:0 6px; }
.alv-help-close:hover { color:#1a1a1a; }
.alv-help-body { padding:14px 22px 22px; overflow-y:auto; font:14px/1.55 sans-serif; color:#1a1a1a; }
.alv-help-intro { margin:6px 0 18px; color:#444; font-size:14.5px; }
.alv-help-sec { padding:10px 0; border-top:1px solid #f1ede4; }
.alv-help-sec:first-of-type { border-top:0; }
.alv-help-sec h4 { margin:0 0 4px; font:600 14.5px sans-serif; color:#1a1a1a; }
.alv-help-sec p { margin:0; color:#333; }
.alv-help-sec p code { background:#f7f5f0; padding:1px 6px; border-radius:3px; font:12.5px monospace; color:#1a1a1a; }
.alv-help-sec p a { color:#C49A3C; text-decoration:underline; }
@media (max-width:600px) {
  .alv-help-modal { width:96vw; max-height:92vh; }
  .alv-help-head { padding:10px 12px; }
  .alv-help-body { padding:12px 14px 18px; }
}