:root{--primary: #3b82f6;--success: #10b981;--danger: #ef4444;--bg: #f3f4f6;--card-bg: #ffffff;--text: #1f2937;--container: 480px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:system-ui,-apple-system,sans-serif;background-color:transparent;color:var(--text);height:100vh;overflow:hidden;touch-action:none}body:before{content:"";position:absolute;inset:0;background:#fff6;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:-1}#root{height:100%;width:100%;display:flex;flex-direction:column;align-items:center;justify-content:center}.bg-wrap{position:fixed;inset:0;z-index:-2;background-color:var(--bg)}.bg-layer{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity .8s ease-in-out}.bg-layer.active{opacity:1}.app-container{width:100%;max-width:var(--container);height:100%;display:flex;flex-direction:column;padding:24px;z-index:1}.header{text-align:center;margin-bottom:24px;background:#fffc;padding:12px;border-radius:16px;box-shadow:0 4px 6px #0000000d}.header h1{font-size:24px;font-weight:700;color:var(--primary)}.header p{font-size:14px;color:#6b7280;margin-top:4px}.card-area{flex-grow:1;position:relative;display:flex;justify-content:center;align-items:center;margin-bottom:48px}.card{width:100%;max-width:360px;min-height:320px;background:var(--card-bg);border-radius:24px;box-shadow:0 10px 25px -5px #0000001a,0 8px 10px -6px #0000001a;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:32px;text-align:center;cursor:grab;-webkit-user-select:none;user-select:none;will-change:transform;transform-origin:50% 100%;touch-action:none}.card:active{cursor:grabbing}.card p{font-size:20px;line-height:1.4;font-weight:500}.card-icon{width:64px;height:64px;margin-bottom:16px}.card-badge{position:absolute;top:24px;font-size:28px;font-weight:800;text-transform:uppercase;padding:8px 16px;border-radius:8px;border:4px solid;opacity:0;z-index:2;pointer-events:none}.badge-yes{color:var(--success);border-color:var(--success);right:24px;transform:rotate(15deg)}.badge-no{color:var(--danger);border-color:var(--danger);left:24px;transform:rotate(-15deg)}.controls{display:flex;justify-content:space-evenly;margin-top:32px;padding-bottom:24px}.btn{border:none;width:72px;height:72px;border-radius:50%;font-size:32px;cursor:pointer;box-shadow:0 4px 6px -1px #0000001a;transition:transform .2s cubic-bezier(.4,0,.2,1);display:flex;align-items:center;justify-content:center;background:var(--card-bg)}.btn:active{transform:scale(.9)}.btn-no{color:var(--danger)}.btn-yes{color:var(--success)}.overlay{position:absolute;inset:0;background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;flex-direction:column;justify-content:center;align-items:center;z-index:10;opacity:0;pointer-events:none;transition:opacity .3s ease}.overlay.active{opacity:1;pointer-events:auto}.result-content{height:100%;width:100%;max-width:var(--container);background:var(--card-bg);display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:24px;transition:all .3s ease}@media(min-width:600px){.result-content{max-width:600px;height:auto;border-radius:24px;box-shadow:0 20px 25px -5px #0000001a,0 10px 10px -5px #0000000a;padding:40px}}.result-title{font-size:36px;font-weight:800;margin-bottom:16px}.result-title.correct{color:var(--success)}.result-title.incorrect{color:var(--danger)}.result-desc{font-size:18px;line-height:1.5;color:#4b5563;margin-bottom:20px}.ad-text{font-size:16px;font-weight:600;color:#0ea5e9;margin-bottom:40px;background:#f0f9ff;padding:12px 20px;border-radius:12px;border:1px dashed #bae6fd;max-width:90%}.btn-primary{background:var(--primary);color:#fff;padding:16px 32px;border-radius:9999px;font-size:18px;font-weight:600;border:none;cursor:pointer;transition:background .2s;box-shadow:0 4px 6px -1px #3b82f680}.btn-primary:hover{background:#2563eb}.mechanics-hint{text-align:center;font-size:14px;color:#fff;opacity:.8;animation:pulse 2s infinite}#trail-container{position:fixed;top:0;left:0;width:100vw;height:100vh;pointer-events:none;z-index:99999;overflow:hidden}.trail{position:absolute;color:var(--primary);font-size:24px;font-weight:800;pointer-events:none;-webkit-user-select:none;user-select:none;width:32px;height:32px;display:flex;align-items:center;justify-content:center;will-change:transform,opacity}.loader{position:fixed;inset:0;background:var(--bg);z-index:10000;display:flex;flex-direction:column;justify-content:center;align-items:center;transition:opacity .5s ease,visibility .5s}.loader.hidden{opacity:0;visibility:hidden;pointer-events:none}.loader-text{font-size:20px;font-weight:600;color:var(--primary);margin-top:20px;text-align:center;padding:0 20px}@keyframes pulse{0%,to{opacity:.6}50%{opacity:1}}@keyframes spin{to{transform:rotate(360deg)}}