body{background:#f8fafc}
            :root{--admin-accent:color-mix(in srgb,#667eea 80%,#1a1a2e);--admin-bg:#f8fafc}
            .filter-btn.active,.login-btn,.register-btn{background:#667eea;color:white;border-color:#667eea}
            .filter-btn:hover,.back-btn:hover{border-color:#667eea;color:#667eea}
            .announcement-text{white-space:pre-wrap}
            a:focus-visible,button:focus-visible,input:focus-visible{outline-color:#667eea}