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0,4px 4px;background-color:var(--ch-inset)}.rail-color-chip-fill{position:absolute;inset:0;background:var(--paint-color);opacity:var(--paint-alpha)}.rail-color-input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer;border:0;padding:0}.rail-color-hex{font-family:var(--ch-font-mono);font-size:11.5px;color:var(--ch-text-secondary)}.rail-opacity-row{display:flex;align-items:center;gap:10px}.rail-opacity-label{font-size:11.5px;color:var(--ch-text-secondary);flex:0 0 46px}.rail-range{flex:1;min-width:0}.rail-range--brush{flex:2}.rail-opacity-value{font-family:var(--ch-font-mono);font-size:11px;color:var(--ch-text-secondary);width:34px;text-align:right}.rail-palette{display:grid;grid-template-columns:repeat(8,1fr);gap:4px}.rail-swatch{height:20px;border-radius:var(--ch-radius-sm);border:1px solid 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var(--ch-border);border-radius:var(--ch-radius-2xl)}.result.error{background:var(--ch-inset);border-color:var(--ch-accent);color:var(--ch-accent)}.result dl{display:grid;grid-template-columns:auto 1fr;gap:4px 12px;margin:0}.result dt{color:var(--ch-text-secondary)}.result dd{margin:0;font-family:var(--ch-font-mono)}.viewport-wrapper,.viewport-canvas{display:block;width:100%;height:100%}