:root{
  --text:#3A3734; --olive:#F5F5EB; --light-olive:#FFFFF2; --brown:#743C1E; --green:#444617; --muted:#5f5d57;
  --t:0.15s linear all;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;width:100%;overflow:hidden;background:#F5F5EB;color:var(--text);
  font-family:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}
#app{display:flex;height:100%;width:100%}
h1,h2,h3,.title{font-family:'Libre Bodoni',Georgia,serif;font-weight:500;margin:0}
h2{font-size:34px;color:var(--brown);line-height:1.1}
.title{font-size:22px;color:var(--green)}
.left-panel{width:470px;flex-shrink:0;height:100%;overflow-y:auto;background:var(--olive);box-shadow:0 0 6px rgba(81,81,77,.35);padding:28px 16px 90px;z-index:5;order:1}
.panel-head{margin-bottom:22px}
.panel-head .sub{margin:8px 0 0;font-size:14px;color:var(--muted)}
#stage{position:relative;flex:1;min-width:0;height:100%;order:2;background:#cfd8df}
#c{display:block;width:100%;height:100%;touch-action:none;outline:none}
.flex{display:flex}.v-center{align-items:center}.g-16{gap:16px}.mt-24{margin-top:24px}
.cat-group{margin-bottom:26px}
.cat-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px 16px;margin-top:10px}
.pill{background:var(--light-olive);font-size:22px;color:var(--green);display:flex;min-height:44px;justify-content:center;align-items:center;border-radius:30px;border:0;
  font-family:'Libre Bodoni',Georgia,serif;padding:0 20px;font-weight:500;transition:var(--t);cursor:pointer;width:100%;text-align:center;line-height:1.1}
.pill.active,.pill:hover{background:var(--brown);color:var(--light-olive)}
.pill:focus-visible,.card:focus-visible,.back:focus-visible,#share:focus-visible,#cta:focus-visible{outline:3px solid var(--green);outline-offset:2px}
.back{border:0;border-radius:50%;width:44px;height:44px;display:flex;justify-content:center;align-items:center;background:var(--light-olive);transition:var(--t);cursor:pointer;flex-shrink:0}
.back svg{stroke:var(--brown);transition:var(--t)}
.back:hover{background:var(--brown)}.back:hover svg{stroke:var(--light-olive)}
.group-title{font-family:'Libre Bodoni',Georgia,serif;font-size:21px;color:var(--green);margin:6px 0 10px}
.group-note{font-size:13px;color:var(--muted);margin:-4px 0 10px;line-height:1.45}
.products{display:grid;grid-template-columns:repeat(3,1fr);gap:16px 10px;margin-bottom:22px}
.card{display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--text);cursor:pointer;background:none;border:0;padding:0;text-align:left;font-family:inherit;line-height:1.3}
.card .img{width:100%;aspect-ratio:1/1;border-radius:12px;background:#fff center/cover no-repeat;outline:2px solid transparent;transition:var(--t)}
.card .img.contain{background-size:contain}
.card.active .img,.card:hover .img{outline:2px solid var(--brown)}
.card .code{display:block;font-size:12px;color:var(--muted)}
.card.custom .img{display:flex;align-items:center;justify-content:center;font-size:26px;color:var(--brown);border:1.5px dashed var(--brown);background:#fff}
.custom-note{grid-column:1/-1;font-size:14px;line-height:1.5;background:#fff;border:1px solid var(--brown);border-radius:12px;padding:14px 16px}
.custom-note a{color:var(--green);font-weight:600}
#cameras{position:absolute;top:24px;right:24px;display:flex;gap:10px;z-index:20}
#cameras .pill{width:auto;font-size:20px}
#hint{position:absolute;left:50%;bottom:22px;transform:translateX(-50%);font-size:13px;color:#fff;background:rgba(58,55,52,.55);padding:6px 12px;border-radius:99px;pointer-events:none;transition:opacity .6s}
#actions{position:absolute;right:18px;bottom:18px;z-index:20;display:flex;flex-direction:column;gap:10px;align-items:flex-end}
#share{font-family:'Inter',sans-serif;font-size:14px;font-weight:600;padding:10px 18px;border-radius:99px;border:1px solid var(--brown);background:var(--olive);color:var(--brown);cursor:pointer;box-shadow:0 1px 6px rgba(58,55,52,.2)}
#cta{font-family:'Inter',sans-serif;font-size:15px;font-weight:600;padding:13px 22px;border-radius:99px;background:var(--green);color:var(--olive);text-decoration:none;box-shadow:0 2px 10px rgba(58,55,52,.3);transition:var(--t)}
#cta:hover{background:var(--brown)}
#loading{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:var(--olive);z-index:30;transition:opacity .5s}
#loading.done{opacity:0;pointer-events:none}
.ld-box{width:min(320px,80%);text-align:center}
.ld-title{font-family:'Libre Bodoni',Georgia,serif;font-size:26px;color:var(--green);margin-bottom:16px}
.ld-bar{height:6px;background:#e3e3d4;border-radius:99px;overflow:hidden}
#ld-fill{display:block;height:100%;width:5%;background:var(--brown);transition:width .3s}
#ver{position:fixed;left:8px;bottom:6px;z-index:40;font-size:10px;color:var(--brown);background:rgba(245,245,235,.85);padding:2px 7px;border-radius:6px;pointer-events:none}
.left-panel::-webkit-scrollbar{width:8px}.left-panel::-webkit-scrollbar-thumb{background:rgba(0,0,0,.2);border-radius:4px}

/* tablet */
@media (max-width:1100px){ .left-panel{width:380px} h2{font-size:30px} .pill{font-size:19px} #cameras .pill{font-size:17px;padding:0 14px} }
/* phones + app webviews: 3D on top, options below */
@media (max-width:760px){
  #app{flex-direction:column}
  #stage{order:1;flex:none;height:52%;height:52dvh}
  .left-panel{order:2;width:100%;flex:1;height:auto;min-height:0;box-shadow:0 -2px 8px rgba(81,81,77,.25);padding:18px 14px calc(24px + env(safe-area-inset-bottom));border-radius:18px 18px 0 0;margin-top:-14px}
  h2{font-size:26px}
  .panel-head{margin-bottom:14px}
  .cat-group{margin-bottom:18px}
  .title{font-size:19px}
  .pill{font-size:17px;min-height:42px;padding:0 10px}
  #cameras{top:10px;right:10px;left:10px;justify-content:center;gap:6px}
  #cameras .pill{font-size:15px;min-height:36px;padding:0 12px}
  #actions{right:10px;bottom:22px;flex-direction:row;gap:8px}
  #share{font-size:12px;padding:8px 12px}
  #cta{font-size:12.5px;padding:9px 13px}
  #hint{display:none}
  .products{grid-template-columns:repeat(4,1fr);gap:12px 8px}
  .card{font-size:12px}
  #ver{display:none}
}
@media (max-width:420px){ .products{grid-template-columns:repeat(3,1fr)} }