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li ul,ul,ul li ul,ul li ul li ul{margin-left:0}.accordion li{margin-bottom:auto}dd,dt{color:#505050}input[type=checkbox]+label,input[type=radio]+label{display:inline;margin-left:.2rem}html{margin-left:0!important;overflow-y:scroll;-webkit-text-size-adjust:100%;-ms-text-size-adjust:100%;text-size-adjust:100%}.header-fixed{position:absolute;top:0;width:100%;z-index:88888888}header[role=banner]{-webkit-transition-duration:111ms;transition-duration:111ms;-webkit-transition-property:350ms ease;transition-property:350ms ease;-webkit-transition-timing-function:ease;transition-timing-function:ease;background-color:#fff;border-bottom:.075rem solid #dcdcdc;border-top:.075rem solid #dcdcdc;height:5.875rem;padding:1.5rem 1.889rem;width:100%;z-index:8888888}header[role=banner] .elsevier-wordmark{float:left;margin:10px 0 0;padding:0;position:relative;width:140px}header[role=banner] .elsevier-wordmark:hover{border-bottom:0;text-decoration:none}header[role=banner] .elsevier-wordmark img{float:left;height:27px;margin:0;padding:0;position:relative}header[role=banner].reduced{margin-top:-2.1875rem;padding-bottom:2.1875rem;padding-top:2.1875rem}.header-item,.menu-toggle-link{color:#323232;float:right;font-weight:700;height:27px;margin:.373rem 0 0;padding:0}.header-item:focus,.header-item:hover,.menu-toggle-link:focus,.menu-toggle-link:hover{border-bottom:0;color:#323232;text-decoration:none}.menu-toggle-text{font-family:NexusSans,"Helvetica Neue",Helvetica,Arial,sans-serif;color:#323232;font-size:1rem;line-height:2.313rem;font-weight:700;text-transform:uppercase;float:left;padding-left:.625rem}.active-spine>a:first-child:before,header .search [type=submit],header .search [type=button],nav[aria-label=primary] .has-children>a:not(.active-spine-clicked):after{font-family:Gizmo,"Segoe UI Symbol","Lucida Grande","Arial Unicode MS",sans-serif}.bigsearch-toggle .menu-toggle-text{padding-left:0}header .search [type=submit],header .search [type=button]{background-color:transparent;border:0;color:#323232;float:left;font-size:27px;font-weight:700;height:auto;line-height:27px;margin:5px .373rem 0 0;padding:3px}.right-off-canvas-menu,nav[aria-label=primary] .menu-item-store{background-color:#414141}header .search [type=submit]:focus,header .search [type=submit]:hover,header .search [type=button]:focus,header .search [type=button]:hover{color:#323232!important}.container-form-search{float:right;padding-right:1.875rem;width:300px}.container-form-search.expanded{width:100%}.container-form-search.expanded .search{float:left;max-width:100%;width:100%}.container-form-search.expanded input[type=search]{max-width:300px;width:inherit}.footer-main{border-top:.075rem solid #dcdcdc;padding-bottom:2rem}.footer-main p{margin-bottom:0}.footer-main .social-share{clear:both;float:right}.footer-connect-container{text-align:center}.footer-fat .icon-medium{color:#969696}.footer-fat .link-social-connect{display:inline-block;width:40px}.footer-fat .link-social-connect:hover{border-bottom:0}.footer-fat .columns,.footer-fat nav[aria-label=secondary] li:first-child:nth-last-child(1),.footer-fat nav[aria-label=secondary] li:first-child:nth-last-child(2),.footer-fat nav[aria-label=secondary] li:first-child:nth-last-child(2)~li,.footer-fat nav[aria-label=secondary] li:first-child:nth-last-child(3),.footer-fat nav[aria-label=secondary] li:first-child:nth-last-child(3)~li,.footer-fat nav[aria-label=secondary] li:first-child:nth-last-child(4),.footer-fat nav[aria-label=secondary] li:first-child:nth-last-child(4)~li,.footer-fat nav[aria-label=secondary] li:first-child:nth-last-child(5),.footer-fat nav[aria-label=secondary] li:first-child:nth-last-child(5)~li,nav[aria-label=secondary] .footer-fat li:first-child:nth-last-child(1),nav[aria-label=secondary] .footer-fat li:first-child:nth-last-child(2),nav[aria-label=secondary] .footer-fat 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li:first-child:nth-last-child(3),main .row nav[aria-label=secondary] li:first-child:nth-last-child(3)~li,main .row nav[aria-label=secondary] li:first-child:nth-last-child(4),main .row nav[aria-label=secondary] li:first-child:nth-last-child(4)~li,main .row nav[aria-label=secondary] li:first-child:nth-last-child(5),main .row nav[aria-label=secondary] li:first-child:nth-last-child(5)~li,nav[aria-label=secondary] main .row li:first-child:nth-last-child(1),nav[aria-label=secondary] main .row li:first-child:nth-last-child(2),nav[aria-label=secondary] main .row li:first-child:nth-last-child(2)~li,nav[aria-label=secondary] main .row li:first-child:nth-last-child(3),nav[aria-label=secondary] main .row li:first-child:nth-last-child(3)~li,nav[aria-label=secondary] main .row li:first-child:nth-last-child(4),nav[aria-label=secondary] main .row li:first-child:nth-last-child(4)~li,nav[aria-label=secondary] main .row li:first-child:nth-last-child(5),nav[aria-label=secondary] main .row 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a:before{margin-right:.444rem}.breadcrumb li a{text-overflow:ellipsis;white-space:nowrap;border:0!important;color:#b9b9b9;display:block;height:auto}.breadcrumb li a:hover{color:#e9711c}@media only screen and (max-width:40em){.breadcrumb-container{width:100%;margin-left:40px;opacity:0}.breadcrumb-container .breadcrumb{display:inline;height:30px}.breadcrumb-container .breadcrumb li{max-width:calc(30%)}}dialog section,fieldset{margin:0}details{padding:.667rem;position:relative}details summary{color:#007398;cursor:pointer;margin-left:1rem;padding-left:1rem;white-space:normal}summary::-webkit-details-marker{display:none}summary:before{color:#007398;font-size:1rem;left:1rem;position:absolute}dialog{border:.075rem solid #969696;padding:1.5rem 1.889rem;box-shadow:.111rem .111rem 1rem .111rem rgba(115,115,115,.667);margin:auto;max-width:48.41rem}dialog section h1{font-size:1.5rem}dialog button.primary{float:right}dialog::backdrop{background:rgba(115,115,115,.667)}.list-menu-control{display:inline-block}.list-menu-control ul{background:#007398;color:#fff;display:none;left:0;position:absolute}.list-menu-control:hover ul{display:block}.list-menu-control li{background:#007398;color:#fff;cursor:pointer;display:inline-block;font-size:1rem;padding:.373rem 1rem;position:relative;white-space:nowrap}.list-menu-control li:after{font-size:.667rem;padding-left:.444rem}.list-menu-control li a{border:0;color:#fff}.list-menu-control:hover ul li:hover{background:#00597c}form{float:left;position:relative}form.search{display:-webkit-box;display:flex}[type=tel],form fieldset [type=search],form fieldset [type=date],form fieldset [type=email],form fieldset [type=number],form fieldset [type=password],form fieldset [type=text],form fieldset [type=time],form fieldset [type=url],form fieldset textarea,legend{margin-bottom:1.5rem;display:block}form:not(.form-full-width){max-width:600px}fieldset{border:0;display:inline-block;padding:0}legend{font-size:1.5rem;padding-top:1.5rem}legend+dl{margin-top:-1.5rem}[type=search]:focus,[type=search]:hover,[type=date]:focus,[type=date]:hover,[type=email]:focus,[type=email]:hover,[type=number]:focus,[type=number]:hover,[type=password]:focus,[type=password]:hover,[type=tel]:focus,[type=tel]:hover,[type=text]:focus,[type=text]:hover,[type=time]:focus,[type=time]:hover,[type=url]:focus,[type=url]:hover,select:focus,select:hover,textarea:focus,textarea:hover{border-color:#3099ce}[type=search][disabled=disabled],[type=date][disabled=disabled],[type=email][disabled=disabled],[type=number][disabled=disabled],[type=password][disabled=disabled],[type=tel][disabled=disabled],[type=text][disabled=disabled],[type=time][disabled=disabled],[type=url][disabled=disabled],select[disabled=disabled],textarea[disabled=disabled]{cursor:not-allowed}[type=search]{-webkit-appearance:textfield;padding-left:initial}[type=search]::-webkit-search-cancel-button{cursor:pointer;position:relative;z-index:1}[type=search]::-webkit-search-results-button{display:none}optgroup{font-weight:400}input::-webkit-calendar-picker{background:#c93729!important}input::-webkit-calendar-picker-indicator{color:#007398}input::-webkit-calendar-picker-indicator:hover{background:0 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#dcdcdc;border-top:.075rem solid #dcdcdc;font-weight:400;margin:.25rem 0 0;padding-bottom:0;padding-left:5px;padding-right:.625rem;padding-top:2px!important;text-transform:none;width:190px}header .search input[type=search]:-moz-placeholder{font-family:NexusSans,"Helvetica Neue",Helvetica,Arial,sans-serif;color:#323232;font-size:1rem;line-height:2.313rem;font-weight:700;text-transform:uppercase;text-transform:none}header .search input[type=search]::-moz-placeholder{font-family:NexusSans,"Helvetica Neue",Helvetica,Arial,sans-serif;color:#323232;font-size:1rem;line-height:2.313rem;font-weight:700;text-transform:uppercase;text-transform:none}header .search input[type=search]:-ms-input-placeholder{font-family:NexusSans,"Helvetica Neue",Helvetica,Arial,sans-serif;color:#323232;font-size:1rem;line-height:2.313rem;font-weight:700;text-transform:uppercase;text-transform:none}header .search input[type=search]::-webkit-input-placeholder{font-family:NexusSans,"Helvetica 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ol:not(.not-enum):not(.accordion):not(.breadcrumb):not(.pagination){counter-reset:section}main ol:not(.not-enum):not(.accordion):not(.breadcrumb):not(.pagination) li{margin-left:1rem;position:relative}main ol:not(.not-enum):not(.accordion):not(.breadcrumb):not(.pagination)>li:before{color:#e9711c;font-weight:700;left:-1.625rem;position:absolute;content:counters(section,".") 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main li:first-child:nth-last-child(4)~li form ul>li,nav[aria-label=secondary] main li:first-child:nth-last-child(5) form ul:not(.not-enum)>li,nav[aria-label=secondary] main li:first-child:nth-last-child(5) form ul>li,nav[aria-label=secondary] main li:first-child:nth-last-child(5)~li form ul:not(.not-enum)>li,nav[aria-label=secondary] main li:first-child:nth-last-child(5)~li form ul>li{margin-left:0}main .columns form ul>li:before,main nav[aria-label=secondary] li:first-child:nth-last-child(1) form ul>li:before,main nav[aria-label=secondary] li:first-child:nth-last-child(2) form ul>li:before,main nav[aria-label=secondary] li:first-child:nth-last-child(2)~li form ul>li:before,main nav[aria-label=secondary] li:first-child:nth-last-child(3) form ul>li:before,main nav[aria-label=secondary] li:first-child:nth-last-child(3)~li form ul>li:before,main nav[aria-label=secondary] li:first-child:nth-last-child(4) form ul>li:before,main nav[aria-label=secondary] li:first-child:nth-last-child(4)~li 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