.signer-shell{--signer-background:#f4f4f4;--signer-surface:#fff;--signer-ink:#4d4d4c;--signer-accent:var(--color-brand-blue);--signer-header-background:var(--signer-surface);--signer-header-foreground:var(--signer-ink);--signer-panel-background:#2c3e50;--signer-panel-foreground:#fff;--signer-panel-icon:#7fb0e6;--card:var(--signer-surface);--card-foreground:var(--signer-ink);background:var(--signer-background);color:var(--signer-ink)}.signer-panel-header{background:var(--signer-panel-background);color:var(--signer-panel-foreground)}.signer-panel-icon{color:var(--signer-panel-icon)}[data-signer-brand=true] .bg-primary:hover{background-color:var(--primary);color:var(--primary-foreground)}.signer-shell-header{background:var(--signer-header-background);color:var(--signer-header-foreground);box-shadow:inset 0 -3px 0 var(--signer-accent)}.signer-shell-preview{min-height:0}.signer-shell-preview .signer-shell-header{position:static}.branding-email-frame{--email-preview-surface:#fff;background:var(--email-preview-surface)}