:root{--bg: #1d2f24;--panel: #24402f;--panel-light: #2f523c;--board-bg: #16241b;--cell-empty: #2c4636;--cell-tw: #c65b4e;--cell-dw: #cf8b6f;--cell-center: #cf8b6f;--cell-tl: #3f7fae;--cell-dl: #6fa8c9;--tile-bg: #f2e2b6;--tile-border: #8a6d3a;--tile-text: #2a2013;--text: #eef3ea;--text-dim: #a9beb0;--accent: #e0b84b;--danger: #c65b4e;--radius: 10px}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;-webkit-tap-highlight-color:transparent;overscroll-behavior:none}#root{display:flex;flex-direction:column;max-width:560px;margin:0 auto;min-height:100%}button{font:inherit;cursor:pointer;border:none;border-radius:var(--radius);padding:.7em 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ease}.rack-tile.selected{transform:translateY(-6px);box-shadow:0 4px 8px #0006}.rack-tile.exchange-selected{outline:2px solid var(--danger)}.rack-tile.dragging{z-index:5;transition:none;box-shadow:0 6px 14px #00000080}.rack-tile .value{position:absolute;bottom:1px;right:3px;font-size:.5rem;font-weight:500}.score-preview{align-self:center;background:var(--panel-light);color:var(--accent);font-weight:700;padding:.3em .9em;border-radius:var(--radius);font-size:.9rem}.action-bar{display:flex;gap:.5rem;flex-wrap:wrap}.action-bar button{flex:1 1 28%;min-width:0;font-size:.82rem;padding:.6em .3em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:20;padding:1rem}.blank-picker{background:var(--panel);border-radius:var(--radius);padding:1rem;display:grid;grid-template-columns:repeat(6,1fr);gap:.4rem;max-width:360px}.blank-picker 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