.reading-settings{position:relative;display:flex;align-items:center}.reading-settings-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:var(--radius-md);color:var(--color-text-tertiary);cursor:pointer;transition:background-color var(--duration-fast) ease,color var(--duration-fast) ease}.reading-settings-btn:hover,.reading-settings-btn[aria-expanded=true]{background:var(--color-surface-hover);color:var(--color-text-secondary)}.rs-glyph{font-family:var(--font-sans);font-weight:var(--weight-bold);font-size:16px;line-height:1;letter-spacing:-.02em}.rs-glyph-sm{font-size:11px}.reading-settings-popover{position:fixed;z-index:var(--z-reading-popover);width:248px;padding:var(--space-4);display:flex;flex-direction:column;gap:var(--space-4);background:var(--color-surface-elevated);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-overlay);font-family:var(--font-sans);animation:rsPopIn var(--duration-fast) var(--ease-out)}.reading-settings-popover[hidden]{display:none}@keyframes rsPopIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.rs-row{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3)}.rs-row-col{flex-direction:column;align-items:stretch;gap:var(--space-2)}.rs-label{font-size:var(--text-sm);font-weight:var(--weight-medium);color:var(--color-text-secondary)}.rs-fonts{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-2)}.rs-font{display:flex;flex-direction:column;align-items:center;gap:var(--space-1);padding:var(--space-2) 0 var(--space-1-5);background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-md);cursor:pointer;transition:background-color var(--duration-fast) ease,border-color var(--duration-fast) ease}.rs-font:hover{background:var(--color-surface-hover)}.rs-font[aria-checked=true]{background:var(--color-accent-subtle);border-color:var(--color-accent-border)}.rs-font-sample{font-size:22px;line-height:1;color:var(--color-text-secondary)}.rs-font[aria-checked=true] .rs-font-sample{color:var(--color-accent)}.rs-font-sample-default{font-family:var(--font-serif)}.rs-font-sample-sans{font-family:var(--font-system-sans)}.rs-font-sample-mono{font-family:var(--font-system-mono)}.rs-font-name{font-size:var(--text-2xs);font-weight:var(--weight-medium);color:var(--color-text-tertiary)}.rs-font[aria-checked=true] .rs-font-name{color:var(--color-text-secondary)}.rs-stepper{display:flex;align-items:center;gap:var(--space-1);background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:2px}.rs-stepper button{width:26px;height:26px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);font-size:16px;line-height:1;color:var(--color-text-secondary);transition:background-color var(--duration-fast) ease}.rs-stepper button:hover{background:var(--color-surface-hover);color:var(--color-text)}.rs-stepper button:disabled{opacity:.35;cursor:default;background:none}.rs-value{min-width:44px;text-align:center;font-size:var(--text-sm);font-variant-numeric:tabular-nums;font-weight:var(--weight-medium);color:var(--color-text)}.rs-slider-wrap{position:relative;display:flex;align-items:center;height:16px}.rs-slider-wrap:before{content:"";position:absolute;left:0;right:0;top:50%;transform:translateY(-50%);height:4px;border-radius:var(--radius-full);background:var(--color-border-strong);z-index:0}.rs-slider-ticks{position:absolute;left:8px;right:8px;top:50%;height:0;pointer-events:none;z-index:1}.rs-tick{position:absolute;top:0;transform:translate(-50%,-50%);width:5px;height:5px;border-radius:var(--radius-full);background:var(--color-text-quaternary);transition:background-color var(--duration-fast) ease}.rs-tick.active{background:var(--color-accent)}.rs-slider{-webkit-appearance:none;appearance:none;position:relative;z-index:2;width:100%;height:16px;background:transparent;cursor:pointer;outline:none}.rs-slider::-webkit-slider-runnable-track{background:transparent;height:16px}.rs-slider::-moz-range-track{background:transparent;height:16px}.rs-slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:16px;height:16px;border-radius:var(--radius-full);background:var(--color-accent);border:2px solid var(--color-surface-elevated);box-shadow:var(--shadow-sm);transition:transform var(--duration-fast) ease}.rs-slider::-webkit-slider-thumb:hover{transform:scale(1.12)}.rs-slider::-moz-range-thumb{width:16px;height:16px;border-radius:var(--radius-full);background:var(--color-accent);border:2px solid var(--color-surface-elevated);box-shadow:var(--shadow-sm)}.rs-slider:focus-visible{box-shadow:0 0 0 3px var(--color-focus-ring)}.rs-reset{font-size:var(--text-xs);color:var(--color-text-tertiary);text-align:center;padding:var(--space-1);border-radius:var(--radius-sm);transition:color var(--duration-fast) ease}.rs-reset:hover{color:var(--color-text-secondary)}