body{font-family:Inter,Noto Sans JP,sans-serif;margin:0;overflow:hidden;background-color:#050510}.bg-night-sky{background:linear-gradient(to bottom,#050510,#1a1a2e)}.modern-btn{background:#0b0b0ccc;border:2px solid #53FC18;border-radius:12px;padding:clamp(10px,2vh,16px) clamp(20px,5vw,40px);min-width:clamp(140px,15vh,200px);text-align:center;color:#53fc18;font-family:Inter,Noto Sans JP,sans-serif;font-size:clamp(16px,2.5vh,24px);font-weight:700;box-shadow:0 0 15px #53fc184d;cursor:pointer;outline:none;-webkit-user-select:none;user-select:none;touch-action:manipulation;-webkit-tap-highlight-color:transparent;transition:all .05s cubic-bezier(.4,0,.2,1);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);text-transform:uppercase;letter-spacing:.05em}.modern-btn:active,.modern-btn.active{background:#53fc18;color:#0b0b0c;transform:scale(.96);box-shadow:0 0 25px #53fc1899}@keyframes sway{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes drop-in{0%{transform:translateY(-100vh);opacity:0}to{transform:translateY(0);opacity:1}}.animate-drop-in{animation:drop-in .6s cubic-bezier(.34,1.56,.64,1) forwards}.animate-sway{animation:sway 2s ease-in-out infinite}