:root{--bg: #000000;--text: #ffffff;--accent: #ffd347}*{box-sizing:border-box}body{margin:0;min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg);color:var(--text);font-family:monospace}.wrap{text-align:center}.title{font-size:32px;margin-bottom:24px}.logo-frame{display:inline-flex;padding:16px 24px;border:2px solid #ffffff;border-radius:6px;margin-bottom:24px;background:#000}.snake-row{display:flex;align-items:center;gap:4px}.segment{width:18px;height:18px;background:#0f0}.segment.body1{background:#59ff59}.segment.body2{background:#a9ff5a}.segment.body3{background:#d0ff7a}.segment.laser1{background:#bf5bff}.segment.laser2{background:#4da3ff}.segment.food{width:18px;height:18px;margin-left:10px;background:#f33}.loading{font-size:14px;color:#ccc}.hint{margin-top:6px;font-size:12px;color:#888}.app{margin:0;min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg);color:var(--text);font-family:monospace}.start-button{margin-top:16px;padding:10px 28px;border-radius:999px;border:2px solid #000000;background:var(--accent);color:#000;font-family:monospace;font-size:16px;cursor:pointer}.start-button:active{transform:scale(.97)}