:root{--usv-crimson:#902e2e;--usv-crimson-tint:rgba(144,46,46,.06);--usv-charcoal:#2c2c2a;--usv-text:#5f5e5a;--usv-text-light:#888780;--usv-glass-bg:rgba(255,255,255,.25);--usv-glass-bg-hover:rgba(255,255,255,.5);--usv-glass-panel:rgba(255,255,255,.82);--usv-glass-border:rgba(255,255,255,.55);--usv-glass-blur:18px;--usv-glass-blur-panel:22px;--usv-shadow:-4px 4px 20px rgba(0,0,0,.06),0 0 0 1px rgba(0,0,0,.02);--usv-shadow-hover:-4px 6px 28px rgba(0,0,0,.1),0 0 0 1px rgba(0,0,0,.03);--usv-shadow-panel:-6px 8px 32px rgba(0,0,0,.08),0 0 0 1px rgba(0,0,0,.02);--usv-radius-pill:22px;--usv-radius-panel:20px;--usv-radius-item:12px;--usv-transition-fast:.18s ease;--usv-transition-panel:.2s cubic-bezier(.4,0,.2,1);--usv-pill-width:38px;--usv-pill-width-hover:42px;--usv-panel-width:230px;--usv-nav-font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Oxygen,Ubuntu,sans-serif}.usv-rail-pill{position:fixed;right:0;top:75%;transform:translateY(-50%);width:var(--usv-pill-width);padding:14px 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0;transition:background var(--usv-transition-fast)}.usv-nav-item.usv-active:before{background:var(--usv-crimson)}.usv-nav-item .usv-nav-text{margin-left:10px;font-size:13px;color:var(--usv-text);transition:all .15s ease;font-weight:400}.usv-nav-item.usv-active .usv-nav-text{color:var(--usv-crimson);font-weight:500}.usv-nav-item:hover .usv-nav-text{color:var(--usv-charcoal)}@media (max-width:768px){.usv-rail-pill{top:auto;bottom:20px;right:16px;transform:none;width:44px;height:44px;padding:0;border-radius:50%;border:1px solid var(--usv-glass-border);justify-content:center;gap:0}.usv-rail-pill:hover{width:44px}.usv-rail-pill .usv-pill-label{display:none}.usv-rail-pill.usv-hidden{transform:scale(.92)}.usv-rail-panel{top:auto;bottom:0;right:0;left:0;width:100%;max-height:70vh;transform:translateY(100%);border-radius:var(--usv-radius-panel) var(--usv-radius-panel) 0 0;border:1px solid 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