:root{--bg: #111111;--text: #ffffff;--text-muted: rgba(255, 255, 255, .4);--accent: #ffffff;--border: rgba(255, 255, 255, .08);--overlay-bg: rgba(0, 0, 0, .85);--font: "Plus Jakarta Sans", sans-serif;--home-grid: rgba(255, 255, 255, .015)}body.theme-light{--bg: #f7f5f2;--text: #1a1a1a;--text-muted: rgba(26, 26, 26, .4);--accent: #1a1a1a;--border: rgba(0, 0, 0, .08);--overlay-bg: rgba(247, 245, 242, .92);--home-grid: rgba(0, 0, 0, .035)}*,*:before,*:after{box-sizing:border-box}body{margin:0;overflow:hidden;background:var(--bg);color:var(--text);font-family:var(--font);-webkit-user-select:none;user-select:none;touch-action:none;-webkit-font-smoothing:antialiased}.screen{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;transition:opacity .3s ease}.screen.hidden{opacity:0;pointer-events:none}#screen-home{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:2rem;position:relative;width:100%;height:100%;min-height:100dvh;background-image:linear-gradient(var(--home-grid) 1px,transparent 1px),linear-gradient(90deg,var(--home-grid) 1px,transparent 1px);background-size:80px 80px;background-position:top left;background-repeat:repeat}.home-decor-block{position:absolute;z-index:1;pointer-events:none}.home-logo,.home-level-badge,.home-btn-group{position:relative;z-index:5}.home-logo{font-size:clamp(5.5rem,25vw,10.5rem);font-weight:800;letter-spacing:-.06em;line-height:.9;color:var(--text);margin:0 0 1rem}.home-subtitle{font-size:.95rem;font-weight:500;color:var(--text-muted);margin:-.25rem 0 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(hover: hover) and (pointer: fine) and (min-width: 769px){.keyboard-guide{opacity:.5;pointer-events:auto}.keyboard-guide:hover{opacity:.9}}.keys-container{display:flex;flex-direction:column;align-items:center;gap:4px}.key-row{display:flex;gap:4px}.key-cap{width:30px;height:30px;border:1px solid var(--text-muted);border-radius:6px;display:flex;align-items:center;justify-content:center;background:#ffffff05;color:var(--text-muted);transition:all .1s ease;box-shadow:0 2px 0 var(--border)}.key-cap svg{transition:transform .1s ease}.key-cap.active{background:var(--text);color:var(--bg);border-color:var(--text);transform:translateY(2px);box-shadow:0 0 0 transparent}.guide-text{font-size:.65rem;font-weight:700;text-transform:uppercase;letter-spacing:.12em;color:var(--text-muted);white-space:nowrap}