.m3-nav-rail{--rail-width:5rem;--rail-background:var(--color-surface);--rail-border-right:0.0625rem solid var(--color-border-subtle);--rail-padding:0.75rem 0;--rail-box-shadow:none;--rail-color:var(--color-text);--rail-position:static;--rail-top:auto;--rail-left:auto;--rail-bottom:auto;--rail-z-index:auto;--rail-header-padding:0.75rem 0 1rem;--rail-header-gap:0.75rem;--rail-items-gap:0.75rem;--rail-items-padding:0;--rail-transition:box-shadow var(--duration-normal) var(--ease-out);background-color:var(--rail-background);border-right:var(--rail-border-right);bottom:var(--rail-bottom);box-shadow:var(--rail-box-shadow);box-sizing:border-box;color:var(--rail-color);left:var(--rail-left);overflow-y:auto;padding:var(--rail-padding);position:var(--rail-position);top:var(--rail-top);transition:var(--rail-transition);width:var(--rail-width);z-index:var(--rail-z-index)}.m3-nav-rail,.m3-nav-rail .rail-header{align-items:center;display:flex;flex-direction:column}.m3-nav-rail .rail-header{flex-shrink:0;gap:var(--rail-header-gap);padding:var(--rail-header-padding)}.m3-nav-rail .rail-items{align-items:center;display:flex;flex:1;flex-direction:column;gap:var(--rail-items-gap);padding:var(--rail-items-padding)}.m3-nav-rail.rail\:fixed{--rail-position:fixed;--rail-top:0;--rail-left:0;--rail-bottom:0;--rail-z-index:var(--z-fixed)}.m3-nav-rail.rail\:elevated{--rail-border-right:none;--rail-box-shadow:var(--shadow-md)}.m3-nav-rail.rail-align\:center .rail-items{justify-content:center}.m3-nav-rail.rail-align\:end .rail-items{justify-content:flex-end}.m3-nav-rail.rail-color\:surface-1{--rail-background:var(--color-surface-1)}.m3-nav-rail.rail-color\:surface-2{--rail-background:var(--color-surface-2)}