/* Transparent balloon sprites stay behind all interactive content. */
body{isolation:isolate}
.balloon-field{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden;contain:strict}
.ambient-balloon{position:absolute;left:0;top:0;opacity:.38;pointer-events:none;background-image:url("assets/balloon-sprite.png");background-size:200% 200%;background-repeat:no-repeat;transform-origin:50% 35%}
.balloon-tone-0{background-position:0 0}.balloon-tone-1{background-position:100% 0}.balloon-tone-2{background-position:0 100%}.balloon-tone-3{background-position:100% 100%}
@media(max-width:640px){.ambient-balloon:nth-child(n+5){display:none}.ambient-balloon{opacity:.30}}
.background-toggle{position:fixed;z-index:5;left:12px;bottom:12px;bottom:max(12px,env(safe-area-inset-bottom));display:flex;align-items:center;gap:8px;min-height:44px;padding:10px 14px;border:1px solid #e4d9ed;border-radius:999px;background:#fffcff;color:#665575;font:500 14px/1.3 var(--body);box-shadow:0 2px 8px #4434550a;cursor:pointer}.background-toggle:focus-visible{outline:3px solid #8054ba;outline-offset:3px}.background-toggle:hover{border-color:#a989c0}.background-toggle:disabled{cursor:default}.background-toggle svg{width:16px;height:16px;flex-shrink:0}
@media(max-width:640px){.background-toggle{font-size:12px;padding:9px 12px;left:8px}.contact{padding-bottom:76px}}

@media print{.balloon-field,.background-toggle{display:none!important}}