.etch-auth{--ink:#161616;--ink-soft:#5a5648;--ink-muted:#8b8775;--bg:#ffffff;--panel:#f7f5ef;--panel-edge:#e8e3d6;--gold:#eab429;--gold-hover:#d49e1f;--gold-ink:#8a6314;--radius-sm:6px;--radius-lg:16px;--shadow-lg:0 12px 32px rgba(0,0,0,0.1);min-height:100vh;background:var(--panel);color:var(--ink)}