:root{--red:#aa1410;--red-d:#8b100d;--red-glow:rgba(170,20,16,.2);--navy:#0d1b2a;--navy-2:#1c2e40;--ice:#f0f4f8;--border:#e2e8ef;--text:#0d1b2a;--white:#fff;--z:999999;--w:min(582px, 96vw);--spd:.22s;--font:"Poppins",sans-serif;--mono:"Roboto",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;--r:10px}#tc4-btn{position:fixed;right:0;top:50%;transform:translateY(-50%);z-index:var(--z);width:56px;height:250px;border:0;border-radius:14px 0 0 14px;background:linear-gradient(180deg,#be1002,#1e3073);color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;cursor:pointer;box-shadow:-6px 0 24px rgba(170,20,16,.45),-2px 0 10px rgba(0,0,0,.25);transition:transform .18s ease,width .25s ease,box-shadow .25s ease,filter .25s ease;overflow:hidden;padding:0;-webkit-tap-highlight-color:transparent}#tc4-btn:hover{width:66px;filter:brightness(1.05);box-shadow:-8px 0 28px rgba(170,20,16,.55),-3px 0 14px rgba(0,0,0,.28)}#tc4-btn:active{transform:translateY(-50%) 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