:root{--cave-background:#0e1015;--panel-background:rgba(19,22,28,0.94);--panel-stroke:#473826;--text-primary:#e8f2ff;--text-muted:#9eb3c7;--gold:#ffbf29;--danger:#ff2e3d;--tile-gap:2.5%}*{margin:0;padding:0;box-sizing:border-box}body,html{min-height:100%;background:var(--cave-background);color:var(--text-primary);font-family:Segoe UI,Apple SD Gothic Neo,Noto Sans 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