*{box-sizing:border-box;margin:0;padding:0}body{color:#e2e8f0;background:#5c94fc;min-height:100vh;font-family:Segoe UI,sans-serif;overflow-x:hidden}h1,h2,h3,p{text-shadow:1px 1px 3px #0009}code{background:#1e293b;border-radius:4px;padding:2px 6px;font-family:Courier New,monospace}.mario-bg{z-index:0;pointer-events:none;position:fixed;inset:0;overflow:hidden}.mario-sky{background:#5c94fc;position:absolute;inset:0}.mario-star{background:#fff;position:absolute}.mario-cloud{image-rendering:pixelated;position:absolute}.mario-cloud-1{animation:30s linear infinite cloud-drift;top:40px;left:-130px}.mario-cloud-2{animation:45s linear -18s infinite cloud-drift;top:70px;left:-90px}.mario-cloud-3{animation:55s linear -30s infinite cloud-drift;top:30px;left:-160px}@keyframes cloud-drift{0%{transform:translate(0)}to{transform:translate(110vw)}}.mario-hill{border-radius:50% 50% 0 0;position:absolute;bottom:64px}.mario-pipe-wrap{flex-direction:column;align-items:center;display:flex;position:absolute;bottom:64px}.mario-pipe-head{background:#00a800;border:3px solid #006400;width:56px;height:16px}.mario-pipe-body{background:#00a800;border:3px solid #006400;border-top:none;width:44px;height:80px}.mario-qblock{color:#fff;width:40px;height:40px;image-rendering:pixelated;background:#e49a00;border:3px solid #7a4300;justify-content:center;align-items:center;font-family:monospace;font-size:22px;font-weight:900;animation:2s ease-in-out infinite qblock-bump;display:flex;position:absolute}@keyframes qblock-bump{0%,90%,to{transform:translateY(0)}95%{transform:translateY(-6px)}}.mario-brick{background:#c84c0c;border:3px solid #7a2a00;width:36px;height:36px;position:absolute}.mario-coin{background:gold;border:3px solid #c89600;width:20px;height:28px;animation:.9s ease-in-out infinite coin-spin;position:absolute}@keyframes coin-spin{0%,to{transform:scaleX(1)}50%{transform:scaleX(.15)}}.mario-flagpole{background:#aaa;width:5px;position:absolute;bottom:64px}.mario-flag{transform-origin:0;background:#e00;width:28px;height:20px;animation:1s ease-in-out infinite flag-wave;position:absolute}@keyframes flag-wave{0%,to{transform:skewY(0)}50%{transform:skewY(5deg)}}.mario-ground{background-color:#c84c0c;background-image:repeating-linear-gradient(90deg,#0000,#0000 49px,#7a2a00 49px 52px),repeating-linear-gradient(#0000,#0000 30px,#7a2a00 30px 32px);background-position:0 0;background-repeat:repeat;background-size:auto;background-attachment:scroll;background-origin:padding-box;background-clip:border-box;border-top:8px solid #e49a00;height:64px;position:absolute;bottom:0;left:0;right:0}.app-content{z-index:1;position:relative}.mario-card{-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#0a0f1ed1;border:1px solid #ffffff14}@keyframes mascot-float{0%{transform:translateY(0)}to{transform:translateY(-5px)}}@keyframes mascot-jump{0%{transform:translateY(0)scale(1)}to{transform:translateY(-12px)scale(1.05)}}@keyframes xp-gain{0%{transform:scale(1)}50%{transform:scale(1.15)}to{transform:scale(1)}}