:root{font-family:Pretendard,system-ui,-apple-system,sans-serif;line-height:1.5;font-weight:400;color-scheme:dark;color:#ffffffde;background:linear-gradient(135deg,#1a1a2e,#16213e);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;display:flex;place-items:center;justify-content:center;min-width:320px;min-height:100vh;overflow:hidden;touch-action:none}#app{width:100%;max-width:400px;margin:0 auto;padding:2rem;text-align:center}.card{padding:2.5rem 1.5rem;border-radius:2rem;background:#ffffff0d;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.1);box-shadow:0 25px 50px -12px #00000080}.icon-wrapper{font-size:4rem;margin-bottom:1.5rem;animation:bounce 2s infinite ease-in-out}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.message{font-size:1.5rem;font-weight:700;line-height:1.4;margin-bottom:2.5rem;color:#fff;text-shadow:0 0 10px rgba(255,255,255,.2)}.button-group{display:flex;gap:1rem;justify-content:center;position:relative;min-height:60px}.btn{padding:.8rem 2rem;font-size:1.1rem;font-weight:600;border-radius:12px;border:none;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);outline:none;white-space:nowrap}.btn-primary{background:linear-gradient(135deg,#00d2ff,#3a7bd5);color:#fff;box-shadow:0 4px 15px #00d2ff4d}.btn-primary:active{transform:scale(.95)}.btn-secondary{background:#ffffff1a;color:#ccc;border:1px solid rgba(255,255,255,.1);transition:transform .2s,background-color .2s;z-index:100;box-sizing:border-box}.success-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#000000e6;display:flex;flex-direction:column;justify-content:center;align-items:center;z-index:1000;opacity:0;pointer-events:none;transition:opacity .5s ease}body{transition:background .5s ease}.success-overlay.show{opacity:1;pointer-events:all}.success-message{font-size:2rem;font-weight:800;color:#fff;text-align:center}