:root{--edge-top:max(12px, env(safe-area-inset-top));--edge-left:max(12px, env(safe-area-inset-left));--edge-right:max(12px, env(safe-area-inset-right));--bg:#f5efe6;--ink:#222;--muted:#6b6258;--accent:#e0662a;--panel:#fffaf2;--line:#d9cfc2;--mark:#a63a0a;--edge:#1d1a17;color:var(--ink);background:var(--bg);font-family:system-ui,-apple-system,Segoe UI,sans-serif}*{box-sizing:border-box}body{margin:0}button{font:inherit;color:inherit;cursor:pointer}button,a,.board{touch-action:manipulation}button:disabled{opacity:.4;cursor:default}.home,.screen{--pad-t:max(16px, env(safe-area-inset-top));--pad-l:max(16px, env(safe-area-inset-left));--pad-r:max(16px, env(safe-area-inset-right));max-width:480px;padding:var(--pad-t) var(--pad-r) max(24px, env(safe-area-inset-bottom)) var(--pad-l);flex-direction:column;gap:10px;margin:0 auto;display:flex}.home{min-height:100dvh}.home-top{justify-content:space-between;align-items:center;display:flex}.streak{border:1px solid 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