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i&&(l=i.applyFilters("i18n.has_translation",l,e,t,n),l=i.applyFilters("i18n.has_translation_"+d(n),l,e,t,n)),l}}}(0,0,P)),D=(O.getLocaleData.bind(O),O.setLocaleData.bind(O)),_=(O.resetLocaleData.bind(O),O.subscribe.bind(O),O.__.bind(O));O._x.bind(O),O._n.bind(O),O._nx.bind(O),O.isRTL.bind(O),O.hasTranslation.bind(O);var B=Object.freeze({TAB:9,RETURN:13,ESC:27,SPACE:32,END:35,HOME:36,LEFT:37,UP:38,RIGHT:39,DOWN:40});function z(e){const t=['a[href]:not([aria-hidden="true"])',"area[href]","input:not([disabled])","select:not([disabled])","textarea:not([disabled])","button:not([disabled])","iframe","object","embed","[contenteditable]",'[tabindex]:not([tabindex^="-"])'].join(","),i=e.querySelectorAll(t);return Array.prototype.slice.call(i)}class F{constructor(e){if(this.stringDescription="Popup",Object.assign(this,e),this.interactiveChildElements=z(this.target),0<this.interactiveChildElements.length){const[e]=this.interactiveChildElements;this.firstItem=e,this.lastItem=this.interactiveChildElements[this.interactiveChildElements.length-1]}this.state={expanded:!1},this.setup=this.setup.bind(this),this.destroy=this.destroy.bind(this),this.manageExpandedState=this.manageExpandedState.bind(this),this.setExpandedState=this.setExpandedState.bind(this),this.controllerKeyDownHandler=this.controllerKeyDownHandler.bind(this),this.targetKeyDownHandler=this.targetKeyDownHandler.bind(this),this.closeOnTabOut=this.closeOnTabOut.bind(this),this.closeOnOutsideClick=this.closeOnOutsideClick.bind(this),this.setup()}setExpandedState(e){this.controller.setAttribute("aria-expanded",`${e}`),this.target.setAttribute("aria-hidden",`${!e}`),this.interactiveChildElements.forEach((t=>{t.setAttribute("tabindex",e?"0":"-1")})),this.state.expanded=e}get[Symbol.toStringTag](){return this.stringDescription}setup(){const{expanded:e}=this.state;this.controller.popup=this,this.target.popup=this,this.controller.setAttribute("aria-haspopup","menu"),this.controller.setAttribute("aria-expanded",`${e}`),this.controller.setAttribute("aria-controls",this.target.id),this.target!==this.controller.nextElementSibling&&this.controller.setAttribute("aria-owns",this.target.id),this.target.setAttribute("aria-hidden",`${!e}`),this.interactiveChildElements.forEach((t=>{t.setAttribute("tabindex",e?"0":"-1")})),this.controller.addEventListener("click",this.manageExpandedState),this.controller.addEventListener("keydown",this.controllerKeyDownHandler),this.target.addEventListener("keydown",this.targetKeyDownHandler),document.body.addEventListener("click",this.closeOnOutsideClick)}destroy(){this.controller.popup=null,this.target.popup=null,this.controller.removeAttribute("aria-haspopup"),this.controller.removeAttribute("aria-expanded"),this.controller.removeAttribute("aria-controls"),this.target!==this.controller.nextElementSibling&&this.controller.removeAttribute("aria-owns"),this.target.removeAttribute("aria-hidden"),this.controller.removeEventListener("click",this.manageExpandedState),this.controller.removeEventListener("keydown",this.controllerKeyDownHandler),this.target.removeEventListener("keydown",this.targetKeyDownHandler),document.body.removeEventListener("click",this.closeOnOutsideClick),this.state={expanded:!1}}controllerKeyDownHandler(e){const{expanded:t}=this.state;if(t){const{ESC:t,TAB:i}=B,{keyCode:s}=e;t===s?(e.stopPropagation(),e.preventDefault(),this.setExpandedState(!1)):i===s&&(e.preventDefault(),this.firstItem.focus())}}targetKeyDownHandler(e){const{ESC:t,TAB:i}=B,{keyCode:s}=e,{expanded:n}=this.state,{activeElement:r}=document;t===s&&n?(e.stopPropagation(),e.preventDefault(),this.setExpandedState(!1),this.controller.focus()):i===s&&(!e.shiftKey||this.firstItem!==r&&this.target!==r?this.lastChild===r&&this.setExpandedState(!1):(e.preventDefault(),this.controller.focus()))}manageExpandedState(e){e.preventDefault(),this.state.expanded?this.setExpandedState(!1):this.setExpandedState(!0)}closeOnTabOut(e){const{TAB:t}=B;t===e.keyCode&&!e.shiftKey&&this.state.expanded&&this.setExpandedState(!1)}closeOnOutsideClick(e){this.state.expanded&&e.target!==this.controller&&!this.target.contains(e.target)&&this.setExpandedState(!1)}}class ${static nextElementIsUl(e){const t=e.nextElementSibling;return null!==t&&"UL"===t.nodeName&&t}constructor(e){this.stringDescription="MenuItem",this.list=e,Object.assign(e,{menuItem:this}),this.listItems=Array.prototype.slice.call(e.children),this.handleListKeydown=this.handleListKeydown.bind(this),this.destroy=this.destroy.bind(this),this.init()}get[Symbol.toStringTag](){return this.stringDescription}init(){this.menuItems=this.listItems.reduce(((e,t)=>{const i=t.firstElementChild;return null!==i&&"A"===i.nodeName?[...e,i]:e}),[]),this.menuItemsLength=this.menuItems.length,this.list.setAttribute("role","menu"),this.menuItems.forEach(((e,t)=>{e.parentElement.setAttribute("role","presentation"),e.setAttribute("role","menuitem"),e.setAttribute("aria-setsize",this.menuItemsLength),e.setAttribute("aria-posinset",t+1),e.addEventListener("keydown",this.handleListKeydown);const i=this.constructor.nextElementIsUl(e);i&&(new $(i).previousSibling=e)})),[this.firstItem]=this.menuItems,this.lastItem=this.menuItems[this.menuItemsLength-1]}handleListKeydown(e){const{keyCode:t}=e,{UP:i,DOWN:s,LEFT:n,RIGHT:r}=B,{activeElement:a}=document,o=this.list.contains(a)?a:this.menuItems[0],l=this.menuItems.length-1,d=this.menuItems.indexOf(o);if([i,s].includes(t)){e.stopPropagation(),e.preventDefault();let n=t===i?d-1:d+1;i===t&&0>n&&(n=l),s===t&&l<n&&(n=0),this.menuItems[n].focus()}else if(r===t){const t=this.constructor.nextElementIsUl(o);if(t&&Object.hasOwnProperty.call(t,"menuItem")){e.stopPropagation(),e.preventDefault();const{menuItem:i}=t;i.firstItem.focus()}}else if(n===t&&void 0!==this.previousSibling){if(e.stopPropagation(),e.preventDefault(),"[object Popup]"===this.previousSibling?.popup?.toString()){e.stopPropagation(),e.preventDefault();const{popup:t}=this.previousSibling;t.state.expanded&&t.setExpandedState(!1)}this.previousSibling.focus()}}destroy(){void 0!==this.list.menuItem&&(this.list.menuItem=null,this.list.removeAttribute("role"),this.menuItems.forEach((e=>{e.parentElement.removeAttribute("role"),e.removeAttribute("role"),e.removeAttribute("aria-setsize"),e.removeAttribute("aria-posinset"),e.removeEventListener("keydown",this.handleListKeydown);const t=this.constructor.nextElementIsUl(e);t&&void 0!==t.menuItem&&"[object MenuItem]"===t?.menuItem?.toString()&&t.menuItem.destroy()})))}}function N(e){if(Array.isArray(e))return e;let t=[];return e instanceof HTMLElement?t=new Array(e):e instanceof NodeList&&(t=Array.prototype.slice.call(e,0)),t}function G(e,t){const i=Array.isArray(t)?t:N(t),s=Array.isArray(e)?e:N(e);(function(e){(Array.isArray(e)?e:N(e)).forEach((e=>{e.removeAttribute("tabindex")}))})(i),0<s.length&&function(e){(Array.isArray(e)?e:N(e)).forEach((e=>{e.setAttribute("tabindex","-1")}))}(s.filter((e=>!i.includes(e))))}class j{constructor(e){this.stringDescription="Menu",this.menu=e,this.popups=[],D({"":{}},"sciencenews"),this.manageState=this.manageState.bind(this),this.handleMenuBarKeydown=this.handleMenuBarKeydown.bind(this),this.handleMenuBarClick=this.handleMenuBarClick.bind(this),this.destroy=this.destroy.bind(this),this.init()}get[Symbol.toStringTag](){return this.stringDescription}manageState(e){if(this.state=Object.assign(this.state,e),Object.prototype.hasOwnProperty.call(e,"activeDescendant")){const{activeDescendant:e}=this.state;G(this.menuBarItems,e),e.focus()}}init(){this.menu.setAttribute("role","menu"),this.menu.menu=this,this.menuItemsCollection=this.menu.children,this.menuItemsArray=Array.prototype.slice.call(this.menuItemsCollection),this.menuBarItems=this.menuItemsArray.reduce(((e,t)=>{const i=t.firstElementChild;return null!==i&&"A"===i.nodeName?[...e,i]:e}),[]),this.menuLength=this.menuBarItems.length,this.menuBarItems.forEach(((e,t)=>{e.parentElement.setAttribute("role","presentation"),e.setAttribute("role","menuitem"),e.setAttribute("aria-setsize",this.menuLength),e.setAttribute("aria-posinset",t+1),e.addEventListener("keydown",this.handleMenuBarKeydown),e.addEventListener("click",this.handleMenuBarClick)})),this.lastIndex=this.menuLength-1,[this.firstItem]=this.menuBarItems,this.lastItem=this.menuBarItems[this.lastIndex],this.state={activeDescendant:this.firstItem},this.popups=this.menuBarItems.reduce(((e,t)=>{const i=t.nextElementSibling;if(null!==i&&"UL"===i.nodeName){const s=new F({controller:t,target:i});return i.addEventListener("keydown",this.handleListKeydown),new $(i).previousSibling=t,[...e,s]}return e}),[]),G(this.menuBarItems,this.state.activeDescendant)}handleMenuBarKeydown(e){const{LEFT:t,RIGHT:i,DOWN:s}=B,{keyCode:n}=e,{activeDescendant:r}=this.state,a=this.menuBarItems.indexOf(r);if([t,i].includes(n)){e.stopPropagation(),e.preventDefault();let s=n===t?a-1:a+1;t===n&&0>s&&(s=this.lastIndex),i===n&&this.lastIndex<s&&(s=0),this.manageState({activeDescendant:this.menuBarItems[s]})}else if(s===n&&"[object Popup]"===r?.popup?.toString()){e.stopPropagation(),e.preventDefault();const{popup:t}=r;t.state.expanded||t.setExpandedState(!0),t.firstItem.focus()}}handleMenuBarClick(e){this.manageState({activeDescendant:e.target})}destroy(){this.menu.removeAttribute("role"),this.menuItemsCollection=this.menu.children,this.menuItemsArray=Array.prototype.slice.call(this.menuItemsCollection),this.menuBarItems.forEach((e=>{e.parentElement.removeAttribute("role"),e.removeAttribute("role"),e.removeAttribute("aria-setsize"),e.removeAttribute("aria-posinset"),e.removeEventListener("keydown",this.handleMenuBarKeydown),e.removeEventListener("click",this.handleMenuBarClick)})),0<this.popups.length&&this.popups.forEach((e=>{void 0!==e.target.menuItem&&"[object MenuItem]"===e?.target?.menuItem?.toString()&&e.target.menuItem.destroy(),e.destroy()})),this.menuBarItems.forEach((e=>{e.removeAttribute("tabindex")}))}}class R{constructor(e,t,i){let s=arguments.length>3&&void 0!==arguments[3]?arguments[3]:250;Object.assign(this,{callback:i,event:t,element:e,frequency:s,timeout:!1}),this.requestTick=this.requestTick.bind(this),this.update=this.update.bind(this),this.callback?this.element.addEventListener(this.event,this.requestTick):console.error("Throttle error: you must specify a callback.")}update(){this.callback(),window.clearTimeout(this.timeout),this.timeout=!1}requestTick(){this.timeout||(this.timeout=window.setTimeout((()=>{window.requestAnimationFrame(this.update)}),this.frequency))}destroy(){this.element.removeEventListener(this.event,this.requestTick)}}var q=JSON.parse('{"full":"1440","xl":"1280","lg":"1024","md":"768","sm":"600","adminbar-sm":"601","adminbar-lg":"783"}'),H=Object.keys(q).reduce(((e,t)=>{const i=q[t]/16+"rem",s=(q[t]-1)/16+"rem";return e[`${t}Min`]=window.matchMedia(`(min-width: ${i})`),e[`${t}Max`]=window.matchMedia(`(max-width: ${s})`),e}),{});function V(){let e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:36;const[,t]=Math.random().toString(e).split(".");return`id_${t}`}function K(e,t){const i=document.createElement("span");return i.classList.add("screen-reader-text"),Object.assign(i,{id:e,innerText:t}),i}class W{static getItemParent(e){const{childOf:t}=e.dataset,i=document.getElementById(t);return null!==i&&i}constructor(e){this.list=e,this.articleItems=Array.prototype.slice.call(e.children),D({"":{}},"sciencenews"),Object.assign(this,{firstItem:this.articleItems[0]}),this.lastIndex=this.articleItems.length-1,this.state={activeDescendant:this.firstItem},this.prepItems=this.prepItems.bind(this),this.updateActiveState=this.updateActiveState.bind(this),this.clearActiveState=this.clearActiveState.bind(this),this.getParentPopup=this.getParentPopup.bind(this),this.handleListBlur=this.handleListBlur.bind(this),this.handleListKeydown=this.handleListKeydown.bind(this),this.parentPopup=this.getParentPopup(),this.prepItems(),this.init()}getParentPopup(){let e=this.list.parentElement;for(;"[object Popup]"!==e?.popup?.toString();)e=e.parentElement;return e.popup}prepItems(){this.articleItems.forEach((e=>{const t=z(e);""===e.id&&e.setAttribute("id",V()),t.forEach((t=>{t.setAttribute("id",V()),t.setAttribute("data-child-of",e.id)}))}))}updateActiveState(e){const{activeDescendant:t}=this.state;t.removeAttribute("aria-selected"),this.state.activeDescendant=e,this.list.setAttribute("aria-activedescendant",e.id),e.setAttribute("aria-selected","true")}clearActiveState(){const{activeDescendant:e}=this.state;this.list.removeAttribute("aria-activedescendant"),e.removeAttribute("aria-selected"),this.state.activeDescendant=this.firstItem,this.list.setAttribute("aria-describedby",this.initialListDescribedby)}static addHelpText(){[{id:"group-widget-list-help",text:_("Use up and down arrow keys to explore.","sciencenews")},{id:"group-widget-list-enter-help",text:_("Use right arrow key to move into the list.","sciencenews")},{id:"group-widget-move-back-help",text:_("Use left arrow key to move back to the parent list.","sciencenews")},{id:"group-widget-tab-help",text:_("Use tab key to enter the current list item.","sciencenews")},{id:"group-widget-esc-help",text:_("Use escape to exit the menu.","sciencenews")}].forEach((e=>{let{id:t,text:i}=e;if(null===document.body.querySelector(`#${t}`)){const e=K(t,i);document.body.appendChild(e)}}))}init(){this.list.setAttribute("role","group"),this.list.setAttribute("tabindex","0"),this.initialListDescribedby="group-widget-list-help group-widget-list-enter-help group-widget-esc-help",this.activeListDescribedby="group-widget-list-help group-widget-move-back-help group-widget-tab-help group-widget-esc-help",this.constructor.addHelpText(),this.list.setAttribute("aria-describedby",this.initialListDescribedby),this.list.addEventListener("blur",this.handleListBlur),this.list.addEventListener("keydown",this.handleListKeydown)}handleListBlur(){this.list.contains(document.activeElement)||this.clearActiveState()}handleListKeydown(e){const{UP:t,DOWN:i,RIGHT:s,LEFT:n,TAB:r}=B,{keyCode:a,shiftKey:o}=e,{activeDescendant:l}=this.state,d=this.articleItems.indexOf(l),c=this.list.hasAttribute("aria-activedescendant"),u=this.constructor.getItemParent(l);if(c||(s===a?(e.preventDefault(),this.updateActiveState(this.firstItem),this.list.setAttribute("aria-describedby",this.activeListDescribedby)):n===a?(e.preventDefault(),this.parentPopup.setExpandedState(!1),this.parentPopup.controller.focus()):[t,i].includes(a)&&(e.preventDefault(),this.parentPopup.firstItem.focus())),c)if(n===a)e.preventDefault(),u?this.updateActiveState(u):this.clearActiveState();else if([t,i].includes(a)&&!u){e.preventDefault();let s=a===t?d-1:d+1;t===a&&0>s&&(s=this.lastIndex),i===a&&this.lastIndex<s&&(s=0),this.updateActiveState(this.articleItems[s])}else if(r===a){const t=z(u||l);if(0<t.length){e.preventDefault();const i=t.indexOf(l),[s]=t;if(u){const e=o?i-1:i+1,s=0>e||t.length-1<e?u:t[e];this.updateActiveState(s)}else o||this.updateActiveState(s)}}}}const U=s(sciencenewsClassnames["topics-megamenu"]),Y=s(sciencenewsClassnames["dropdown-single-topic"]);t({name:"topics-menu",component:class{static handleTopicLeadKeydown(e,t){const{UP:i,DOWN:s}=B,{keyCode:n}=e;[i,s].includes(n)&&(e.preventDefault(),t.focus())}constructor(e){let{element:t,children:i,options:s}=e;this.element=t,this.children=i,this.options=s,this.groups=[],this.articleListSupport=!1,this.setupArticleListSupport=this.setupArticleListSupport.bind(this),this.setDropdownPositioning=this.setDropdownPositioning.bind(this),this.init=this.init.bind(this),this.init(),H.lgMin.addListener(this.init)}setupArticleListSupport(){this.singlePopups.forEach((e=>{const{selectors:{articleList:t}}=this.options,i=e.target.querySelector(t);if(null!==i){const e=new W(i);this.groups.push(e)}e.firstItem.addEventListener("keydown",(e=>{const{UP:t,DOWN:s}=B,{keyCode:n}=e;[t,s].includes(n)&&(e.preventDefault(),i.focus())}))})),this.articleListSupport=!0}setDropdownPositioning(){this.singlePopups.forEach((e=>{e.target.removeAttribute("style"),void 0!==e.observer&&e.observer.disconnect(),e.setExpandedState(!1);const t=e.controller.offsetLeft,i=e.controller.offsetWidth/2,s=window.innerWidth-(t+i);Object.assign(e.target.style,{right:`${s}px`}),e.observer=new MutationObserver((t=>{t.forEach((t=>{"attributes"===t.type&&"aria-hidden"===t.attributeName&&"false"===e.target.getAttribute("aria-hidden")&&(e.target.clientWidth/2<s?Object.assign(e.target.style,{transform:"translateX(50%)"}):Object.assign(e.target.style,{right:"30px"}))}))})),e.observer.observe(e.target,{attributes:!0})}))}init(){if(H.lgMin.matches){if(this.topicsMenu instanceof j||(this.topicsMenu=new j(this.children.list)),void 0===this.singlePopups){const{singleDropdownLists:e}=this.children;null!==e&&(this.singlePopups=Array.prototype.reduce.call(e,((e,t)=>(t.popup instanceof F&&e.push(t.popup),e)),[]))}this.articleListSupport||this.setupArticleListSupport(),this.setDropdownPositioning(),this.resize=new R(window,"resize",this.setDropdownPositioning)}else this.resize instanceof R&&this.resize.destroy()}},querySelector:{list:U.list},querySelectorAll:{singleDropdownLists:`${Y.dropdown}`},options:{selectors:{articleList:Y.articleList}}});class X{constructor(e){this.stringDescription="Disclosure",Object.assign(this,{controller:null,target:null,loadOpen:!1,allowOutsideClick:!0,onOpen:()=>{},onClose:()=>{}},e),this.state={expanded:this.loadOpen},this.interactiveChildElements=z(this.target),this.setup=this.setup.bind(this),this.destroy=this.destroy.bind(this),this.toggleExpandedState=this.toggleExpandedState.bind(this),this.setExpandedState=this.setExpandedState.bind(this),this.rovingTabIndex=this.rovingTabIndex.bind(this),this.closeOnOutsideClick=this.closeOnOutsideClick.bind(this),this.setup(),this.rovingTabIndex(!1)}setExpandedState(e){this.controller.setAttribute("aria-expanded",`${e}`),this.target.setAttribute("aria-hidden",`${!e}`),this.rovingTabIndex(e),this.state.expanded=e,e?this.onOpen.call(this):this.onClose.call(this)}get[Symbol.toStringTag](){return this.stringDescription}setup(){const{expanded:e}=this.state;[this.controller,this.target].forEach((e=>{""===e.id&&e.setAttribute("id",V())})),this.controller.disclosure=this,this.target.disclosure=this,this.controller.setAttribute("aria-expanded",`${e}`),this.controller.setAttribute("aria-controls",this.target.id),this.target!==this.controller.nextElementSibling&&this.controller.setAttribute("aria-owns",this.target.id),this.target.setAttribute("aria-hidden",`${!e}`),this.controller.addEventListener("click",this.toggleExpandedState),this.allowOutsideClick||document.body.addEventListener("click",this.closeOnOutsideClick)}destroy(){this.controller.disclosure=null,this.target.disclosure=null,this.controller.removeAttribute("aria-expanded"),this.controller.removeAttribute("aria-controls"),this.controller.removeAttribute("aria-owns"),this.target.removeAttribute("aria-hidden"),this.controller.removeEventListener("click",this.toggleExpandedState),document.body.removeEventListener("click",this.closeOnOutsideClick),this.state={expanded:this.loadOpen}}toggleExpandedState(e){e.preventDefault(),this.state.expanded?this.setExpandedState(!1):this.setExpandedState(!0)}closeOnOutsideClick(e){this.state.expanded&&e.target!==this.controller&&!this.target.contains(e.target)&&this.setExpandedState(!1)}rovingTabIndex(e){this.interactiveChildElements.forEach((t=>{e?t.removeAttribute("tabindex"):t.setAttribute("tabindex","-1")}))}}function J(e,t){const i=e.split("-").map(((e,t)=>0===t?e:e.charAt(0).toUpperCase()+e.slice(1))).join(""),n=s(sciencenewsClassnames[t]);return void 0!==n[i]&&n[i]}function Z(e,t){let i=arguments.length>2&&void 0!==arguments[2]&&arguments[2];const s=J(e,t);return s?i?document.querySelectorAll(s):document.querySelector(s):null}const Q=s(sciencenewsClassnames["header-search"]);t({name:"header-search",component:class{constructor(e){let{element:t,children:i,options:s}=e;this.element=t,this.children=i,this.options=s,D({"":{}},"sciencenews"),this.moveComponent=this.moveComponent.bind(this),this.updateControllerText=this.updateControllerText.bind(this),this.navBarWrapper=Z("wrapper","nav-bar"),this.navBar=Z("nav-bar","nav-bar"),this.actionsList=Z("actions","nav-bar"),this.moveComponent(),H.lgMin.addListener(this.moveComponent),this.init(),this.updateControllerText()}moveComponent(){const{controller:e}=this.children;if(null!==this.navBarWrapper&&null!==this.navBar&&null!==this.actionsList){const t=e.parentElement,i=this.element.parentElement;H.lgMin.matches?t!==this.navBar&&i!==this.navBar&&this.navBar.insertBefore(this.element,this.actionsList):t!==this.navBarWrapper&&i!==this.navBarWrapper&&this.navBarWrapper.appendChild(this.element)}}init(){const{controller:e,target:t}=this.children;this.disclosure=new X({controller:e,target:t,onOpen:this.updateControllerText,onClose:this.updateControllerText});const i=K("header-search-help",_("Use the Shift key with the Tab key to tab back to the search input.","sciencenews"));document.body.appendChild(i),t.style.clip="rect(0, 0, 0, 0)",t.addEventListener("transitionend",(()=>{const{expanded:e}=this.disclosure.state;e||(t.style.clip="rect(0, 0, 0, 0)")}))}updateControllerText(){const{controller:e,target:t,openText:i,closeText:s,input:n}=this.children,{expanded:r}=this.disclosure.state;i.setAttribute("aria-hidden",`${r}`),s.setAttribute("aria-hidden",`${!r}`),r?(t.style.clip="auto",e.setAttribute("aria-describedby","header-search-help"),n.focus()):e.removeAttribute("aria-describedby")}},querySelector:{target:Q.wrapper,controller:Q.toggle,openText:Q.open,closeText:Q.close,input:"input"}});class ee{constructor(e){if(null==e||!(e instanceof HTMLFormElement))throw new Error("Invalid form element.");this.form=e,this.validateEmailInput=this.validateEmailInput.bind(this),this.formSubmit=this.formSubmit.bind(this),this.checkEmailInput=this.checkEmailInput.bind(this),this.updateState=this.updateState.bind(this),this.updateReadyState=this.updateReadyState.bind(this),this.init()}updateState(e){const t=new 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CustomEvent("sn.formready",{bubbles:!0,composed:!0,detail:{}});this.form.dispatchEvent(e)}init(){this.emailInput=this.form.querySelector('[name="email"]'),this.nonceInput=this.form.querySelector('[name="nonce"]'),this.submit=this.form.querySelector('[type="submit"]'),this.honeyPot=this.form.querySelector('[name="client_key"]'),this.formId=this.form.querySelector('[name="form_id"]'),this.control=this.form.querySelector('[name="control"]'),null!=this.emailInput&&(this.form.addEventListener("submit",this.formSubmit),this.emailInput.addEventListener("input",this.checkEmailInput),this.updateReadyState())}checkEmailInput(){null!==this.emailInput.getAttribute("aria-invalid")&&this.emailInput.removeAttribute("aria-invalid")}validateEmailInput(){const{value:e,pattern:t}=this.emailInput,i=new RegExp(t),s=e.trim();return 0<e.trim().length&&i.test(s)}formSubmit(e){if(e.preventDefault(),!this.validateEmailInput())return this.emailInput.setAttribute("aria-invalid","true"),!1;const{pathname:t,search:i}=window.location,s=this.honeyPot?.value?this.honeyPot.value:"",n=this.nonceInput.value,r=this.formId.value,a=this.control.value,o=encodeURIComponent(this.emailInput.value);this.emailInput.removeAttribute("aria-invalid"),this.updateState("loading");const l=`${[`client_key=${s}`,`control=${a}`,`email=${o}`,`form_id=${r}`,`page=${t}`].join("&")}${i}`,d=new XMLHttpRequest;d.open("POST",this.form.action,!0),d.setRequestHeader("Content-Type","application/x-www-form-urlencoded; charset=UTF-8"),d.setRequestHeader("X-WP-Nonce",n),d.send(encodeURI(l)),d.onreadystatechange=()=>{if(d.readyState===XMLHttpRequest.DONE){const{status:e}=d;0===e||200<=e&&400>e?this.updateState("success"):this.updateState("error")}}}}function te(e,t){let{status:i}=t;const s={loading:"login-form--loading",success:"login-form--success",error:"login-form--error"};requestAnimationFrame((()=>{"loading"===i?e.classList.remove(s.success,s.error):e.classList.remove(s.loading),e.classList.add(s[i])}))}t({name:"form-assembly",component:class{constructor(e){let{element:t,children:i,options:s}=e;this.element=t,this.children=i,this.options=s,this.init=this.init.bind(this),this.init()}init(){this.formAssemblySubmit=new ee(this.element)}}});var ie=i(2215),se=i.n(ie),ne=`${amScripts.global.sitePrefix}-restricted-content-access`;t({name:"login-form",component:class{constructor(e){let{element:t,children:i,options:s}=e;this.element=t,this.children=i,this.options=s,this.init=this.init.bind(this),this.handleFormState=this.handleFormState.bind(this),"true"!==se().get(ne)&&this.init()}handleFormState(e){const{detail:t={}}=e,{status:i=""}=t;if(te(this.element,t),"success"===i){se().set(ne,!0,{expires:30});const{origin:e}=window.location;window.location.href=e}}init(){this.element.addEventListener("sn.formstatechange",this.handleFormState)}}});class re{constructor(){this.state={},this.searchString="",this.referenceElements=[],this.setState=this.setState.bind(this),this.getState=this.getState.bind(this),this.setSelfReference=this.setSelfReference.bind(this),this.warnDeprecated=this.warnDeprecated.bind(this)}setState(e){Object.assign(this.state,e),"function"==typeof this.stateWasUpdated&&this.stateWasUpdated()}setSelfReference(e){const t=[...e].map((e=>(Object.defineProperty(e,this.componentName.toLowerCase(),{value:this,configurable:!0}),e)));this.referenceElements=[...this.referenceElements,...t]}deleteSelfReferences(){this.referenceElements.forEach((e=>{delete e[this.componentName.toLowerCase()]}))}getState(){return this.state}warnDeprecated(e,t=!1){const i=t?`Use ${t} instead.`:"";console.warn(`${this.componentName}:`,`${e} is deprecated.`,`${i}`)}}var ae=Object.freeze({TAB:9,RETURN:13,ESC:27,SPACE:32,END:35,HOME:36,LEFT:37,UP:38,RIGHT:39,DOWN:40});function oe(e){if(Array.isArray(e))return e;let t=[];return e instanceof HTMLElement?t=new Array(e):(e instanceof NodeList||e instanceof HTMLCollection)&&(t=Array.prototype.slice.call(e,0)),t}function le(e){(Array.isArray(e)?e:oe(e)).forEach((e=>{e.removeAttribute("tabindex")}))}function de(e){(Array.isArray(e)?e:oe(e)).forEach((e=>{e.setAttribute("tabindex","-1")}))}class ce extends re{constructor(e,t){if(super(t),null==e)throw new Error("Configuration error: A target 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required.");this.target=e,this.componentName="ProgrammaticDialog",Object.assign(this,{content:[],onInit:()=>{},onStateChange:()=>{},onDestroy:()=>{}},t),this.init=this.init.bind(this),this.handleTargetKeydown=this.handleTargetKeydown.bind(this),this.hideOnOutsideClick=this.hideOnOutsideClick.bind(this),this.handleKeydownEsc=this.handleKeydownEsc.bind(this),this.show=this.show.bind(this),this.hide=this.hide.bind(this),this.destroy=this.destroy.bind(this),this.stateWasUpdated=this.stateWasUpdated.bind(this),this.setInteractiveChildren=this.setInteractiveChildren.bind(this),this.setDialogController=this.setDialogController.bind(this),this.controllerClick=this.controllerClick.bind(this),this.init()}setDialogController(e){this.controller=e,super.setSelfReference([this.controller]),this.controllerIsNotAButton="BUTTON"!==this.controller.nodeName&&null===this.controller.getAttribute("role"),this.controllerIsNotAButton&&(this.controller.setAttribute("role","button"),this.controller.setAttribute("tabindex","0")),this.controller.setAttribute("aria-expanded","false"),this.controller.addEventListener("click",this.controllerClick),this.controller.addEventListener("keydown",this.controllerKeydown)}setInteractiveChildren(){this.interactiveChildElements=function(e){const t=["a[href]","area[href]","input:not([disabled])","select:not([disabled])","textarea:not([disabled])","button:not([disabled])","iframe","object","embed","[contenteditable]",'[tabindex]:not([tabindex^="-"])'].join(","),i=e.querySelectorAll(t);return Array.prototype.slice.call(i)}(this.target);const[e,t]=function(e){const t=oe(e),i=t.length-1,{0:s,[i]:n}=t;return[s,n]}(this.interactiveChildElements);this.firstInteractiveChild=e,this.lastInteractiveChild=t}init(){var e,t;if(0===this.content.length||null==this.content?this.content=Array.from(document.body.children).filter((e=>!e.contains(this.target))):this.content=(e=this.content,Array.isArray(e)?e:e instanceof HTMLElement?new Array(e):e instanceof NodeList||e instanceof HTMLCollection?Array.from(e):[]),0===this.content.length)throw new Error("Configuration error: The Dialog target should not be within the main site content.");super.setSelfReference([this.target]),this.setInteractiveChildren(),de(this.interactiveChildElements),null!==(t=this.target)&&""===t.id&&t.setAttribute("id",function(e=36){const[,t]=Math.random().toString(e).split(".");return`id_${t}`}()),this.target.setAttribute("aria-hidden","true"),this.target.setAttribute("hidden",""),this.target.setAttribute("role","dialog"),this.target.setAttribute("aria-modal","true"),this.target.addEventListener("keydown",this.handleTargetKeydown),this.state={expanded:!1},this.onInit.call(this)}stateWasUpdated(){const{expanded:e}=this.state,t=this.content.length;if(this.setInteractiveChildren(),e){this.target.setAttribute("tabindex","0");for(let e=0;e<t;e+=1)this.content[e].setAttribute("aria-hidden","true");this.target.setAttribute("aria-hidden","false"),this.target.removeAttribute("hidden"),null!=this.controller&&this.controller.setAttribute("aria-expanded","true"),le(this.interactiveChildElements),this.target.focus()}else{this.target.setAttribute("tabindex","-1");for(let e=0;e<t;e+=1)this.content[e].removeAttribute("aria-hidden");this.target.setAttribute("aria-hidden","true"),this.target.setAttribute("hidden",""),de(this.interactiveChildElements),null!=this.controller&&(this.controller.setAttribute("aria-expanded","false"),this.controller.focus())}this.onStateChange.call(this,this.state)}hideOnOutsideClick(e){const{expanded:t}=this.state,{target:i}=e;!t||this.target.contains(i)||null==this.controller||this.controller.contains(i)||this.hide()}handleKeydownEsc(e){const{ESC:t}=ae,{keyCode:i}=e;t===i&&this.hide()}handleTargetKeydown(e){const{TAB:t}=ae,{keyCode:i,shiftKey:s}=e,{expanded:n}=this.state;if(n&&i===t){const{activeElement:t}=document;s&&this.firstInteractiveChild===t?(e.preventDefault(),this.lastInteractiveChild.focus()):s||this.lastInteractiveChild!==t||(e.preventDefault(),this.firstInteractiveChild.focus())}}controllerKeydown(e){const{SPACE:t,RETURN:i}=ae,{keyCode:s}=e;[t,i].includes(s)&&(e.preventDefault(),this.show())}controllerClick(e){e.preventDefault(),this.show()}destroy(){this.deleteSelfReferences(),this.target.getAttribute("id").includes("id_")&&this.target.removeAttribute("id"),this.target.removeAttribute("aria-hidden"),this.target.removeAttribute("hidden"),this.target.removeAttribute("tabindex"),this.target.removeAttribute("role"),this.target.removeAttribute("aria-modal"),le(this.interactiveChildElements);const e=this.content.length;for(let t=0;t<e;t+=1)this.content[t].removeAttribute("aria-hidden");this.target.removeEventListener("keydown",this.handleTargetKeydown),null!=this.controller&&(this.controller.removeAttribute("aria-expanded"),this.controllerIsNotAButton&&(this.controller.removeAttribute("role"),this.controller.removeAttribute("tabindex")),this.controller.removeEventListener("click",this.controllerClick),this.controller.removeEventListener("keydown",this.controllerKeydown)),this.state={expanded:!1},this.onDestroy.call(this)}show(){this.setState({expanded:!0})}hide(){this.setState({expanded:!1})}}t({name:"modal-access",component:class{constructor(e){let{element:t,children:i,options:s}=e;this.element=t,this.children=i,this.options=s,this.setup=this.setup.bind(this),this.init=this.init.bind(this),this.handleDialogStateChange=this.handleDialogStateChange.bind(this),this.handleFormState=this.handleFormState.bind(this),this.handlePaywallState=this.handlePaywallState.bind(this),this.target=document.getElementById("modal-access"),null!=this.target&&this.setup()}handleDialogStateChange(e){let{expanded:t}=e;t?(document.body.addEventListener("click",this.dialog.hideOnOutsideClick),document.body.addEventListener("keydown",this.dialog.handleKeydownEsc)):(document.body.removeEventListener("click",this.dialog.hideOnOutsideClick),document.body.removeEventListener("keydown",this.dialog.handleKeydownEsc))}handleFormState(e){const{detail:t={}}=e,{status:i=""}=t;if(te(this.target,t),"success"===i)if(se().set(ne,!0,{expires:30}),this.dialog.hide(),this.dialog.destroy(),this.element.hasAttribute("download"))this.element.click();else{const{href:e}=this.element;window.location.href=e}}handlePaywallState(e){const{detail:t={}}=e,{status:i=""}=t;"success"===i&&(this.dialog.hide(),this.dialog.destroy())}setup(){const e=document.querySelector('[data-component="modal-signup"]');null!==e&&e.addEventListener("sn.formstatechange",this.handlePaywallState),"true"!==se().get(ne)&&this.init()}init(){this.dialog=new ce(this.target,{onStateChange:this.handleDialogStateChange}),this.dialog.setDialogController(this.element);const e=this.target.querySelector(".modal-access__close");null!==e&&e.addEventListener("click",this.dialog.hide),this.target.addEventListener("sn.formstatechange",this.handleFormState)}}});const ue=s(sciencenewsClassnames["nav-bar"]),{toggle:pe,navBar:he,actions:me}=ue;t({name:"nav-bar",component:class{static getDropdownIcon(){const e=i(7325);return document.createRange().createContextualFragment(e)}constructor(e){let{element:t,children:i,options:s}=e;this.element=t,this.children=i,this.options=s;const{menuStylesheet:n,persist:r}=this.options;this.persistMenuButton=!0===r,this.primaryMenu={},this.topicsMenu={};const a=void 0!==n?n:"primary-menu",{toggle:o,navBar:l,actions:d}=this.children,c=Z("menu",a),u=J("has-children",a),p=c.querySelectorAll(`${u} > a`),h=Z("topics-menu",a),m=Z("list","topics-megamenu");if(Object.assign(this,{toggle:o,navBar:l,menu:c,topics:h,actions:d,topicsMegaMenu:m,submenuLinks:p,menuButton:{}}),this.handleBreakpointChanges=this.handleBreakpointChanges.bind(this),this.setUpMenuButton=this.setUpMenuButton.bind(this),this.useHamburgerMenu=this.useHamburgerMenu.bind(this),this.setUpPrimaryMenu=this.setUpPrimaryMenu.bind(this),this.setUpPrimaryMenuItem=this.setUpPrimaryMenuItem.bind(this),this.setUpSecondaryMenuItems=this.setUpSecondaryMenuItems.bind(this),this.addKeydownPatches=this.addKeydownPatches.bind(this),this.removeKeydownPatches=this.removeKeydownPatches.bind(this),this.patchTopLevelKeydown=this.patchTopLevelKeydown.bind(this),this.patchNavBarKeydown=this.patchNavBarKeydown.bind(this),this.patchMenuButtonKeydown=this.patchMenuButtonKeydown.bind(this),this.patchPrimaryMenuFirstItem=this.patchPrimaryMenuFirstItem.bind(this),this.patchTopicsMenuFirstItem=this.patchTopicsMenuFirstItem.bind(this),this.persistMenuButton)this.useHamburgerMenu();else{const e=this.submenuLinks.length,t=this.constructor.getDropdownIcon();for(let i=0;i<e;i+=1)this.submenuLinks[i].querySelector("svg")||this.submenuLinks[i].appendChild(t);this.handleBreakpointChanges(),H.lgMin.addListener(this.handleBreakpointChanges)}}handleBreakpointChanges(){H.lgMin.matches?(this.setUpPrimaryMenu(),this.topicsMenu instanceof $&&this.topicsMenu.destroy(),this.menuButton instanceof F&&this.menuButton.destroy(),this.removeKeydownPatches(),null!==this.topics&&this.topics.contains(document.activeElement)&&this.topicsMegaMenu.menu.firstItem.focus()):this.useHamburgerMenu()}setUpMenuButton(){this.menuButton instanceof F?this.menuButton.setup():this.menuButton=new F({controller:this.toggle,target:this.navBar}),this.menuButton.controller.addEventListener("keydown",this.patchMenuButtonKeydown)}setUpPrimaryMenu(){this.primaryMenu instanceof $&&this.primaryMenu.destroy(),this.primaryMenu instanceof j?this.primaryMenu.init():this.primaryMenu=new j(this.menu)}setUpPrimaryMenuItem(){this.primaryMenu instanceof j&&this.primaryMenu.destroy(),this.primaryMenu instanceof $?this.primaryMenu.init():this.primaryMenu=new $(this.menu)}setUpSecondaryMenuItems(){null!==this.topics&&(this.topicsMenu instanceof $?this.topicsMenu.init():this.topicsMenu=new $(this.topics))}useHamburgerMenu(){this.setUpMenuButton(),this.setUpPrimaryMenuItem(),this.setUpSecondaryMenuItems(),this.addKeydownPatches(),(this.navBar.contains(document.activeElement)||null!==this.topics&&this.topics.contains(document.activeElement))&&this.menuButton.controller.focus()}removeKeydownPatches(){(this.primaryMenu instanceof $||this.primaryMenu instanceof j)&&this.primaryMenu.firstItem.removeEventListener("keydown",this.patchPrimaryMenuFirstItem),this.topicsMenu instanceof $&&this.topicsMenu.firstItem.removeEventListener("keydown",this.patchTopicsMenuFirstItem),this.menu.removeEventListener("keydown",this.patchTopLevelKeydown),null!==this.topics&&this.topics.removeEventListener("keydown",this.patchTopLevelKeydown),this.navBar.removeEventListener("keydown",this.patchNavBarKeydown)}addKeydownPatches(){this.primaryMenu.firstItem.addEventListener("keydown",this.patchPrimaryMenuFirstItem),null!==this.topics&&this.topicsMenu.firstItem.addEventListener("keydown",this.patchTopicsMenuFirstItem),this.menu.addEventListener("keydown",this.patchTopLevelKeydown),null!==this.topics&&this.topics.addEventListener("keydown",this.patchTopLevelKeydown),this.navBar.addEventListener("keydown",this.patchNavBarKeydown)}patchTopLevelKeydown(e){const{keyCode:t,target:i}=e,{LEFT:s}=B;s!==t||void 0!==i.menuItem&&void 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e=t.slides.filter((e=>e.column===d))[0];let i=parseInt(e.getAttribute("data-swiper-slide-index"),10);Number.isNaN(i)&&(i=Math.max(t.slides.indexOf(e),0)),p=Math.floor(i/n.grid.rows)}else if(t.slides[d]){const e=t.slides[d].getAttribute("data-swiper-slide-index");p=e?parseInt(e,10):d}else p=d;Object.assign(t,{previousSnapIndex:o,snapIndex:l,previousRealIndex:a,realIndex:p,previousIndex:r,activeIndex:d}),t.initialized&&Ke(t),t.emit("activeIndexChange"),t.emit("snapIndexChange"),(t.initialized||t.params.runCallbacksOnInit)&&(a!==p&&t.emit("realIndexChange"),t.emit("slideChange"))},updateClickedSlide:function(e,t){const i=this,s=i.params;let n=e.closest(`.${s.slideClass}, swiper-slide`);!n&&i.isElement&&t&&t.length>1&&t.includes(e)&&[...t.slice(t.indexOf(e)+1,t.length)].forEach((e=>{!n&&e.matches&&e.matches(`.${s.slideClass}, swiper-slide`)&&(n=e)}));let r,a=!1;if(n)for(let e=0;e<i.slides.length;e+=1)if(i.slides[e]===n){a=!0,r=e;break}if(!n||!a)return i.clickedSlide=void 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0===t&&(t=r.params.speed);const f=Math.min(r.params.slidesPerGroupSkip,a);let g=f+Math.floor((a-f)/r.params.slidesPerGroup);g>=l.length&&(g=l.length-1);const v=-l[g];if(o.normalizeSlideIndex)for(let e=0;e<d.length;e+=1){const t=-Math.floor(100*v),i=Math.floor(100*d[e]),s=Math.floor(100*d[e+1]);void 0!==d[e+1]?t>=i&&t<s-(s-i)/2?a=e:t>=i&&t<s&&(a=e+1):t>=i&&(a=e)}if(r.initialized&&a!==u){if(!r.allowSlideNext&&(p?v>r.translate&&v>r.minTranslate():v<r.translate&&v<r.minTranslate()))return!1;if(!r.allowSlidePrev&&v>r.translate&&v>r.maxTranslate()&&(u||0)!==a)return!1}let b;a!==(c||0)&&i&&r.emit("beforeSlideChangeStart"),r.updateProgress(v),b=a>u?"next":a<u?"prev":"reset";const y=r.virtual&&r.params.virtual.enabled;if((!y||!n)&&(p&&-v===r.translate||!p&&v===r.translate))return r.updateActiveIndex(a),o.autoHeight&&r.updateAutoHeight(),r.updateSlidesClasses(),"slide"!==o.effect&&r.setTranslate(v),"reset"!==b&&(r.transitionStart(i,b),r.transitionEnd(i,b)),!1;if(o.cssMode){const e=r.isHorizontal(),i=p?v:-v;if(0===t)y&&(r.wrapperEl.style.scrollSnapType="none",r._immediateVirtual=!0),y&&!r._cssModeVirtualInitialSet&&r.params.initialSlide>0?(r._cssModeVirtualInitialSet=!0,requestAnimationFrame((()=>{h[e?"scrollLeft":"scrollTop"]=i}))):h[e?"scrollLeft":"scrollTop"]=i,y&&requestAnimationFrame((()=>{r.wrapperEl.style.scrollSnapType="",r._immediateVirtual=!1}));else{if(!r.support.smoothScroll)return Ie({swiper:r,targetPosition:i,side:e?"left":"top"}),!0;h.scrollTo({[e?"left":"top"]:i,behavior:"smooth"})}return!0}return r.setTransition(t),r.setTranslate(v),r.updateActiveIndex(a),r.updateSlidesClasses(),r.emit("beforeTransitionStart",t,s),r.transitionStart(i,b),0===t?r.transitionEnd(i,b):r.animating||(r.animating=!0,r.onSlideToWrapperTransitionEnd||(r.onSlideToWrapperTransitionEnd=function(e){r&&!r.destroyed&&e.target===this&&(r.wrapperEl.removeEventListener("transitionend",r.onSlideToWrapperTransitionEnd),r.onSlideToWrapperTransitionEnd=null,delete r.onSlideToWrapperTransitionEnd,r.transitionEnd(i,b))}),r.wrapperEl.addEventListener("transitionend",r.onSlideToWrapperTransitionEnd)),!0},slideToLoop:function(e,t,i,s){void 0===e&&(e=0),void 0===i&&(i=!0),"string"==typeof e&&(e=parseInt(e,10));const n=this;if(n.destroyed)return;void 0===t&&(t=n.params.speed);const r=n.grid&&n.params.grid&&n.params.grid.rows>1;let a=e;if(n.params.loop)if(n.virtual&&n.params.virtual.enabled)a+=n.virtual.slidesBefore;else{let e;if(r){const t=a*n.params.grid.rows;e=n.slides.filter((e=>1*e.getAttribute("data-swiper-slide-index")===t))[0].column}else e=n.getSlideIndexByData(a);const t=r?Math.ceil(n.slides.length/n.params.grid.rows):n.slides.length,{centeredSlides:i}=n.params;let o=n.params.slidesPerView;"auto"===o?o=n.slidesPerViewDynamic():(o=Math.ceil(parseFloat(n.params.slidesPerView,10)),i&&o%2==0&&(o+=1));let l=t-e<o;if(i&&(l=l||e<Math.ceil(o/2)),s&&i&&"auto"!==n.params.slidesPerView&&!r&&(l=!1),l){const 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requestAnimationFrame((()=>{s.slideTo(s.activeIndex+l,e,t,i)})),!0}return r.rewind&&s.isEnd?s.slideTo(0,e,t,i):s.slideTo(s.activeIndex+l,e,t,i)},slidePrev:function(e,t,i){void 0===t&&(t=!0);const s=this,{params:n,snapGrid:r,slidesGrid:a,rtlTranslate:o,enabled:l,animating:d}=s;if(!l||s.destroyed)return s;void 0===e&&(e=s.params.speed);const c=s.virtual&&n.virtual.enabled;if(n.loop){if(d&&!c&&n.loopPreventsSliding)return!1;s.loopFix({direction:"prev"}),s._clientLeft=s.wrapperEl.clientLeft}function u(e){return e<0?-Math.floor(Math.abs(e)):Math.floor(e)}const p=u(o?s.translate:-s.translate),h=r.map((e=>u(e)));let m=r[h.indexOf(p)-1];if(void 0===m&&n.cssMode){let e;r.forEach(((t,i)=>{p>=t&&(e=i)})),void 0!==e&&(m=r[e>0?e-1:e])}let f=0;if(void 0!==m&&(f=a.indexOf(m),f<0&&(f=s.activeIndex-1),"auto"===n.slidesPerView&&1===n.slidesPerGroup&&n.slidesPerGroupAuto&&(f=f-s.slidesPerViewDynamic("previous",!0)+1,f=Math.max(f,0))),n.rewind&&s.isBeginning){const 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t=e-Math.floor(e/A)*A;b?d.forEach(((e,i)=>{e.column===t&&w.push(i)})):w.push(t)}}if(l.__preventObserver__=!0,requestAnimationFrame((()=>{l.__preventObserver__=!1})),x&&y.forEach((e=>{d[e].swiperLoopMoveDOM=!0,p.prepend(d[e]),d[e].swiperLoopMoveDOM=!1})),E&&w.forEach((e=>{d[e].swiperLoopMoveDOM=!0,p.append(d[e]),d[e].swiperLoopMoveDOM=!1})),l.recalcSlides(),"auto"===h.slidesPerView?l.updateSlides():b&&(y.length>0&&x||w.length>0&&E)&&l.slides.forEach(((e,t)=>{l.grid.updateSlide(t,e,l.slides)})),h.watchSlidesProgress&&l.updateSlidesOffset(),i)if(y.length>0&&x){if(void 0===t){const e=l.slidesGrid[S],t=l.slidesGrid[S+T]-e;o?l.setTranslate(l.translate-t):(l.slideTo(S+Math.ceil(T),0,!1,!0),n&&(l.touchEventsData.startTranslate=l.touchEventsData.startTranslate-t,l.touchEventsData.currentTranslate=l.touchEventsData.currentTranslate-t))}else if(n){const e=b?y.length/h.grid.rows:y.length;l.slideTo(l.activeIndex+e,0,!1,!0),l.touchEventsData.currentTranslate=l.translate}}else if(w.length>0&&E)if(void 0===t){const e=l.slidesGrid[S],t=l.slidesGrid[S-C]-e;o?l.setTranslate(l.translate-t):(l.slideTo(S-C,0,!1,!0),n&&(l.touchEventsData.startTranslate=l.touchEventsData.startTranslate-t,l.touchEventsData.currentTranslate=l.touchEventsData.currentTranslate-t))}else{const e=b?w.length/h.grid.rows:w.length;l.slideTo(l.activeIndex-e,0,!1,!0)}if(l.allowSlidePrev=c,l.allowSlideNext=u,l.controller&&l.controller.control&&!a){const e={slideRealIndex:t,direction:s,setTranslate:n,activeSlideIndex:r,byController:!0};Array.isArray(l.controller.control)?l.controller.control.forEach((t=>{!t.destroyed&&t.params.loop&&t.loopFix({...e,slideTo:t.params.slidesPerView===h.slidesPerView&&i})})):l.controller.control instanceof l.constructor&&l.controller.control.params.loop&&l.controller.control.loopFix({...e,slideTo:l.controller.control.params.slidesPerView===h.slidesPerView&&i})}l.emit("loopFix")},loopDestroy:function(){const e=this,{params:t,slidesEl:i}=e;if(!t.loop||e.virtual&&e.params.virtual.enabled)return;e.recalcSlides();const s=[];e.slides.forEach((e=>{const t=void 0===e.swiperSlideIndex?1*e.getAttribute("data-swiper-slide-index"):e.swiperSlideIndex;s[t]=e})),e.slides.forEach((e=>{e.removeAttribute("data-swiper-slide-index")})),s.forEach((e=>{i.append(e)})),e.recalcSlides(),e.slideTo(e.realIndex,0)}};function Je(e,t,i){const s=Se(),{params:n}=e,r=n.edgeSwipeDetection,a=n.edgeSwipeThreshold;return!r||!(i<=a||i>=s.innerWidth-a)||"prevent"===r&&(t.preventDefault(),!0)}function Ze(e){const t=this,i=ye();let s=e;s.originalEvent&&(s=s.originalEvent);const n=t.touchEventsData;if("pointerdown"===s.type){if(null!==n.pointerId&&n.pointerId!==s.pointerId)return;n.pointerId=s.pointerId}else"touchstart"===s.type&&1===s.targetTouches.length&&(n.touchId=s.targetTouches[0].identifier);if("touchstart"===s.type)return void 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s||i.getRootNode?s||t(i.getRootNode().host):null}(t)}(u,l):l.closest(u)))return void(t.allowClick=!0);if(r.swipeHandler&&!l.closest(r.swipeHandler))return;a.currentX=s.pageX,a.currentY=s.pageY;const h=a.currentX,m=a.currentY;if(!Je(t,s,h))return;Object.assign(n,{isTouched:!0,isMoved:!1,allowTouchCallbacks:!0,isScrolling:void 0,startMoving:void 0}),a.startX=h,a.startY=m,n.touchStartTime=xe(),t.allowClick=!0,t.updateSize(),t.swipeDirection=void 0,r.threshold>0&&(n.allowThresholdMove=!1);let f=!0;l.matches(n.focusableElements)&&(f=!1,"SELECT"===l.nodeName&&(n.isTouched=!1)),i.activeElement&&i.activeElement.matches(n.focusableElements)&&i.activeElement!==l&&("mouse"===s.pointerType||"mouse"!==s.pointerType&&!l.matches(n.focusableElements))&&i.activeElement.blur();const g=f&&t.allowTouchMove&&r.touchStartPreventDefault;!r.touchStartForcePreventDefault&&!g||l.isContentEditable||s.preventDefault(),r.freeMode&&r.freeMode.enabled&&t.freeMode&&t.animating&&!r.cssMode&&t.freeMode.onTouchStart(),t.emit("touchStart",s)}function Qe(e){const t=ye(),i=this,s=i.touchEventsData,{params:n,touches:r,rtlTranslate:a,enabled:o}=i;if(!o)return;if(!n.simulateTouch&&"mouse"===e.pointerType)return;let l,d=e;if(d.originalEvent&&(d=d.originalEvent),"pointermove"===d.type){if(null!==s.touchId)return;if(d.pointerId!==s.pointerId)return}if("touchmove"===d.type){if(l=[...d.changedTouches].filter((e=>e.identifier===s.touchId))[0],!l||l.identifier!==s.touchId)return}else l=d;if(!s.isTouched)return void(s.startMoving&&s.isScrolling&&i.emit("touchMoveOpposite",d));const c=l.pageX,u=l.pageY;if(d.preventedByNestedSwiper)return r.startX=c,void(r.startY=u);if(!i.allowTouchMove)return d.target.matches(s.focusableElements)||(i.allowClick=!1),void(s.isTouched&&(Object.assign(r,{startX:c,startY:u,currentX:c,currentY:u}),s.touchStartTime=xe()));if(n.touchReleaseOnEdges&&!n.loop)if(i.isVertical()){if(u<r.startY&&i.translate<=i.maxTranslate()||u>r.startY&&i.translate>=i.minTranslate())return s.isTouched=!1,void(s.isMoved=!1)}else if(c<r.startX&&i.translate<=i.maxTranslate()||c>r.startX&&i.translate>=i.minTranslate())return;if(t.activeElement&&t.activeElement.matches(s.focusableElements)&&t.activeElement!==d.target&&"mouse"!==d.pointerType&&t.activeElement.blur(),t.activeElement&&d.target===t.activeElement&&d.target.matches(s.focusableElements))return s.isMoved=!0,void(i.allowClick=!1);s.allowTouchCallbacks&&i.emit("touchMove",d),r.previousX=r.currentX,r.previousY=r.currentY,r.currentX=c,r.currentY=u;const p=r.currentX-r.startX,h=r.currentY-r.startY;if(i.params.threshold&&Math.sqrt(p**2+h**2)<i.params.threshold)return;if(void 0===s.isScrolling){let e;i.isHorizontal()&&r.currentY===r.startY||i.isVertical()&&r.currentX===r.startX?s.isScrolling=!1:p*p+h*h>=25&&(e=180*Math.atan2(Math.abs(h),Math.abs(p))/Math.PI,s.isScrolling=i.isHorizontal()?e>n.touchAngle:90-e>n.touchAngle)}if(s.isScrolling&&i.emit("touchMoveOpposite",d),void 0===s.startMoving&&(r.currentX===r.startX&&r.currentY===r.startY||(s.startMoving=!0)),s.isScrolling||"touchmove"===d.type&&s.preventTouchMoveFromPointerMove)return void(s.isTouched=!1);if(!s.startMoving)return;i.allowClick=!1,!n.cssMode&&d.cancelable&&d.preventDefault(),n.touchMoveStopPropagation&&!n.nested&&d.stopPropagation();let m=i.isHorizontal()?p:h,f=i.isHorizontal()?r.currentX-r.previousX:r.currentY-r.previousY;n.oneWayMovement&&(m=Math.abs(m)*(a?1:-1),f=Math.abs(f)*(a?1:-1)),r.diff=m,m*=n.touchRatio,a&&(m=-m,f=-f);const g=i.touchesDirection;i.swipeDirection=m>0?"prev":"next",i.touchesDirection=f>0?"prev":"next";const v=i.params.loop&&!n.cssMode,b="next"===i.touchesDirection&&i.allowSlideNext||"prev"===i.touchesDirection&&i.allowSlidePrev;if(!s.isMoved){if(v&&b&&i.loopFix({direction:i.swipeDirection}),s.startTranslate=i.getTranslate(),i.setTransition(0),i.animating){const e=new window.CustomEvent("transitionend",{bubbles:!0,cancelable:!0,detail:{bySwiperTouchMove:!0}});i.wrapperEl.dispatchEvent(e)}s.allowMomentumBounce=!1,!n.grabCursor||!0!==i.allowSlideNext&&!0!==i.allowSlidePrev||i.setGrabCursor(!0),i.emit("sliderFirstMove",d)}if((new Date).getTime(),s.isMoved&&s.allowThresholdMove&&g!==i.touchesDirection&&v&&b&&Math.abs(m)>=1)return Object.assign(r,{startX:c,startY:u,currentX:c,currentY:u,startTranslate:s.currentTranslate}),s.loopSwapReset=!0,void(s.startTranslate=s.currentTranslate);i.emit("sliderMove",d),s.isMoved=!0,s.currentTranslate=m+s.startTranslate;let y=!0,w=n.resistanceRatio;if(n.touchReleaseOnEdges&&(w=0),m>0?(v&&b&&s.allowThresholdMove&&s.currentTranslate>(n.centeredSlides?i.minTranslate()-i.slidesSizesGrid[i.activeIndex+1]-("auto"!==n.slidesPerView&&i.slides.length-n.slidesPerView>=2?i.slidesSizesGrid[i.activeIndex+1]+i.params.spaceBetween:0)-i.params.spaceBetween:i.minTranslate())&&i.loopFix({direction:"prev",setTranslate:!0,activeSlideIndex:0}),s.currentTranslate>i.minTranslate()&&(y=!1,n.resistance&&(s.currentTranslate=i.minTranslate()-1+(-i.minTranslate()+s.startTranslate+m)**w))):m<0&&(v&&b&&s.allowThresholdMove&&s.currentTranslate<(n.centeredSlides?i.maxTranslate()+i.slidesSizesGrid[i.slidesSizesGrid.length-1]+i.params.spaceBetween+("auto"!==n.slidesPerView&&i.slides.length-n.slidesPerView>=2?i.slidesSizesGrid[i.slidesSizesGrid.length-1]+i.params.spaceBetween:0):i.maxTranslate())&&i.loopFix({direction:"next",setTranslate:!0,activeSlideIndex:i.slides.length-("auto"===n.slidesPerView?i.slidesPerViewDynamic():Math.ceil(parseFloat(n.slidesPerView,10)))}),s.currentTranslate<i.maxTranslate()&&(y=!1,n.resistance&&(s.currentTranslate=i.maxTranslate()+1-(i.maxTranslate()-s.startTranslate-m)**w))),y&&(d.preventedByNestedSwiper=!0),!i.allowSlideNext&&"next"===i.swipeDirection&&s.currentTranslate<s.startTranslate&&(s.currentTranslate=s.startTranslate),!i.allowSlidePrev&&"prev"===i.swipeDirection&&s.currentTranslate>s.startTranslate&&(s.currentTranslate=s.startTranslate),i.allowSlidePrev||i.allowSlideNext||(s.currentTranslate=s.startTranslate),n.threshold>0){if(!(Math.abs(m)>n.threshold||s.allowThresholdMove))return void(s.currentTranslate=s.startTranslate);if(!s.allowThresholdMove)return s.allowThresholdMove=!0,r.startX=r.currentX,r.startY=r.currentY,s.currentTranslate=s.startTranslate,void(r.diff=i.isHorizontal()?r.currentX-r.startX:r.currentY-r.startY)}n.followFinger&&!n.cssMode&&((n.freeMode&&n.freeMode.enabled&&i.freeMode||n.watchSlidesProgress)&&(i.updateActiveIndex(),i.updateSlidesClasses()),n.freeMode&&n.freeMode.enabled&&i.freeMode&&i.freeMode.onTouchMove(),i.updateProgress(s.currentTranslate),i.setTranslate(s.currentTranslate))}function et(e){const t=this,i=t.touchEventsData;let s,n=e;if(n.originalEvent&&(n=n.originalEvent),"touchend"===n.type||"touchcancel"===n.type){if(s=[...n.changedTouches].filter((e=>e.identifier===i.touchId))[0],!s||s.identifier!==i.touchId)return}else{if(null!==i.touchId)return;if(n.pointerId!==i.pointerId)return;s=n}if(["pointercancel","pointerout","pointerleave","contextmenu"].includes(n.type)&&(!["pointercancel","contextmenu"].includes(n.type)||!t.browser.isSafari&&!t.browser.isWebView))return;i.pointerId=null,i.touchId=null;const{params:r,touches:a,rtlTranslate:o,slidesGrid:l,enabled:d}=t;if(!d)return;if(!r.simulateTouch&&"mouse"===n.pointerType)return;if(i.allowTouchCallbacks&&t.emit("touchEnd",n),i.allowTouchCallbacks=!1,!i.isTouched)return i.isMoved&&r.grabCursor&&t.setGrabCursor(!1),i.isMoved=!1,void(i.startMoving=!1);r.grabCursor&&i.isMoved&&i.isTouched&&(!0===t.allowSlideNext||!0===t.allowSlidePrev)&&t.setGrabCursor(!1);const c=xe(),u=c-i.touchStartTime;if(t.allowClick){const e=n.path||n.composedPath&&n.composedPath();t.updateClickedSlide(e&&e[0]||n.target,e),t.emit("tap click",n),u<300&&c-i.lastClickTime<300&&t.emit("doubleTap doubleClick",n)}if(i.lastClickTime=xe(),Ee((()=>{t.destroyed||(t.allowClick=!0)})),!i.isTouched||!i.isMoved||!t.swipeDirection||0===a.diff&&!i.loopSwapReset||i.currentTranslate===i.startTranslate&&!i.loopSwapReset)return i.isTouched=!1,i.isMoved=!1,void(i.startMoving=!1);let p;if(i.isTouched=!1,i.isMoved=!1,i.startMoving=!1,p=r.followFinger?o?t.translate:-t.translate:-i.currentTranslate,r.cssMode)return;if(r.freeMode&&r.freeMode.enabled)return void t.freeMode.onTouchEnd({currentPos:p});const h=p>=-t.maxTranslate()&&!t.params.loop;let m=0,f=t.slidesSizesGrid[0];for(let e=0;e<l.length;e+=e<r.slidesPerGroupSkip?1:r.slidesPerGroup){const t=e<r.slidesPerGroupSkip-1?1:r.slidesPerGroup;void 0!==l[e+t]?(h||p>=l[e]&&p<l[e+t])&&(m=e,f=l[e+t]-l[e]):(h||p>=l[e])&&(m=e,f=l[l.length-1]-l[l.length-2])}let g=null,v=null;r.rewind&&(t.isBeginning?v=r.virtual&&r.virtual.enabled&&t.virtual?t.virtual.slides.length-1:t.slides.length-1:t.isEnd&&(g=0));const b=(p-l[m])/f,y=m<r.slidesPerGroupSkip-1?1:r.slidesPerGroup;if(u>r.longSwipesMs){if(!r.longSwipes)return void t.slideTo(t.activeIndex);"next"===t.swipeDirection&&(b>=r.longSwipesRatio?t.slideTo(r.rewind&&t.isEnd?g:m+y):t.slideTo(m)),"prev"===t.swipeDirection&&(b>1-r.longSwipesRatio?t.slideTo(m+y):null!==v&&b<0&&Math.abs(b)>r.longSwipesRatio?t.slideTo(v):t.slideTo(m))}else{if(!r.shortSwipes)return void t.slideTo(t.activeIndex);!t.navigation||n.target!==t.navigation.nextEl&&n.target!==t.navigation.prevEl?("next"===t.swipeDirection&&t.slideTo(null!==g?g:m+y),"prev"===t.swipeDirection&&t.slideTo(null!==v?v:m)):n.target===t.navigation.nextEl?t.slideTo(m+y):t.slideTo(m)}}function tt(){const e=this,{params:t,el:i}=e;if(i&&0===i.offsetWidth)return;t.breakpoints&&e.setBreakpoint();const{allowSlideNext:s,allowSlidePrev:n,snapGrid:r}=e,a=e.virtual&&e.params.virtual.enabled;e.allowSlideNext=!0,e.allowSlidePrev=!0,e.updateSize(),e.updateSlides(),e.updateSlidesClasses();const o=a&&t.loop;!("auto"===t.slidesPerView||t.slidesPerView>1)||!e.isEnd||e.isBeginning||e.params.centeredSlides||o?e.params.loop&&!a?e.slideToLoop(e.realIndex,0,!1,!0):e.slideTo(e.activeIndex,0,!1,!0):e.slideTo(e.slides.length-1,0,!1,!0),e.autoplay&&e.autoplay.running&&e.autoplay.paused&&(clearTimeout(e.autoplay.resizeTimeout),e.autoplay.resizeTimeout=setTimeout((()=>{e.autoplay&&e.autoplay.running&&e.autoplay.paused&&e.autoplay.resume()}),500)),e.allowSlidePrev=n,e.allowSlideNext=s,e.params.watchOverflow&&r!==e.snapGrid&&e.checkOverflow()}function it(e){const t=this;t.enabled&&(t.allowClick||(t.params.preventClicks&&e.preventDefault(),t.params.preventClicksPropagation&&t.animating&&(e.stopPropagation(),e.stopImmediatePropagation())))}function st(){const e=this,{wrapperEl:t,rtlTranslate:i,enabled:s}=e;if(!s)return;let n;e.previousTranslate=e.translate,e.isHorizontal()?e.translate=-t.scrollLeft:e.translate=-t.scrollTop,0===e.translate&&(e.translate=0),e.updateActiveIndex(),e.updateSlidesClasses();const r=e.maxTranslate()-e.minTranslate();n=0===r?0:(e.translate-e.minTranslate())/r,n!==e.progress&&e.updateProgress(i?-e.translate:e.translate),e.emit("setTranslate",e.translate,!1)}function nt(e){const t=this;He(t,e.target),t.params.cssMode||"auto"!==t.params.slidesPerView&&!t.params.autoHeight||t.update()}function rt(){const e=this;e.documentTouchHandlerProceeded||(e.documentTouchHandlerProceeded=!0,e.params.touchReleaseOnEdges&&(e.el.style.touchAction="auto"))}const at=(e,t)=>{const i=ye(),{params:s,el:n,wrapperEl:r,device:a}=e,o=!!s.nested,l="on"===t?"addEventListener":"removeEventListener",d=t;n&&"string"!=typeof n&&(i[l]("touchstart",e.onDocumentTouchStart,{passive:!1,capture:o}),n[l]("touchstart",e.onTouchStart,{passive:!1}),n[l]("pointerdown",e.onTouchStart,{passive:!1}),i[l]("touchmove",e.onTouchMove,{passive:!1,capture:o}),i[l]("pointermove",e.onTouchMove,{passive:!1,capture:o}),i[l]("touchend",e.onTouchEnd,{passive:!0}),i[l]("pointerup",e.onTouchEnd,{passive:!0}),i[l]("pointercancel",e.onTouchEnd,{passive:!0}),i[l]("touchcancel",e.onTouchEnd,{passive:!0}),i[l]("pointerout",e.onTouchEnd,{passive:!0}),i[l]("pointerleave",e.onTouchEnd,{passive:!0}),i[l]("contextmenu",e.onTouchEnd,{passive:!0}),(s.preventClicks||s.preventClicksPropagation)&&n[l]("click",e.onClick,!0),s.cssMode&&r[l]("scroll",e.onScroll),s.updateOnWindowResize?e[d](a.ios||a.android?"resize orientationchange observerUpdate":"resize observerUpdate",tt,!0):e[d]("observerUpdate",tt,!0),n[l]("load",e.onLoad,{capture:!0}))},ot=(e,t)=>e.grid&&t.grid&&t.grid.rows>1;var lt={init:!0,direction:"horizontal",oneWayMovement:!1,swiperElementNodeName:"SWIPER-CONTAINER",touchEventsTarget:"wrapper",initialSlide:0,speed:300,cssMode:!1,updateOnWindowResize:!0,resizeObserver:!0,nested:!1,createElements:!1,eventsPrefix:"swiper",enabled:!0,focusableElements:"input, select, option, textarea, button, video, label",width:null,height:null,preventInteractionOnTransition:!1,userAgent:null,url:null,edgeSwipeDetection:!1,edgeSwipeThreshold:20,autoHeight:!1,setWrapperSize:!1,virtualTranslate:!1,effect:"slide",breakpoints:void 0,breakpointsBase:"window",spaceBetween:0,slidesPerView:1,slidesPerGroup:1,slidesPerGroupSkip:0,slidesPerGroupAuto:!1,centeredSlides:!1,centeredSlidesBounds:!1,slidesOffsetBefore:0,slidesOffsetAfter:0,normalizeSlideIndex:!0,centerInsufficientSlides:!1,watchOverflow:!0,roundLengths:!1,touchRatio:1,touchAngle:45,simulateTouch:!0,shortSwipes:!0,longSwipes:!0,longSwipesRatio:.5,longSwipesMs:300,followFinger:!0,allowTouchMove:!0,threshold:5,touchMoveStopPropagation:!1,touchStartPreventDefault:!0,touchStartForcePreventDefault:!1,touchReleaseOnEdges:!1,uniqueNavElements:!0,resistance:!0,resistanceRatio:.85,watchSlidesProgress:!1,grabCursor:!1,preventClicks:!0,preventClicksPropagation:!0,slideToClickedSlide:!1,loop:!1,loopAddBlankSlides:!0,loopAdditionalSlides:0,loopPreventsSliding:!0,rewind:!1,allowSlidePrev:!0,allowSlideNext:!0,swipeHandler:null,noSwiping:!0,noSwipingClass:"swiper-no-swiping",noSwipingSelector:null,passiveListeners:!0,maxBackfaceHiddenSlides:10,containerModifierClass:"swiper-",slideClass:"swiper-slide",slideBlankClass:"swiper-slide-blank",slideActiveClass:"swiper-slide-active",slideVisibleClass:"swiper-slide-visible",slideFullyVisibleClass:"swiper-slide-fully-visible",slideNextClass:"swiper-slide-next",slidePrevClass:"swiper-slide-prev",wrapperClass:"swiper-wrapper",lazyPreloaderClass:"swiper-lazy-preloader",lazyPreloadPrevNext:0,runCallbacksOnInit:!0,_emitClasses:!1};function dt(e,t){return function(i){void 0===i&&(i={});const s=Object.keys(i)[0],n=i[s];"object"==typeof n&&null!==n?(!0===e[s]&&(e[s]={enabled:!0}),"navigation"===s&&e[s]&&e[s].enabled&&!e[s].prevEl&&!e[s].nextEl&&(e[s].auto=!0),["pagination","scrollbar"].indexOf(s)>=0&&e[s]&&e[s].enabled&&!e[s].el&&(e[s].auto=!0),s in e&&"enabled"in n?("object"!=typeof e[s]||"enabled"in e[s]||(e[s].enabled=!0),e[s]||(e[s]={enabled:!1}),Ce(t,i)):Ce(t,i)):Ce(t,i)}}const ct={eventsEmitter:je,update:We,translate:{getTranslate:function(e){void 0===e&&(e=this.isHorizontal()?"x":"y");const{params:t,rtlTranslate:i,translate:s,wrapperEl:n}=this;if(t.virtualTranslate)return i?-s:s;if(t.cssMode)return s;let r=function(e,t){void 0===t&&(t="x");const i=Se();let s,n,r;const a=function(e){const t=Se();let i;return t.getComputedStyle&&(i=t.getComputedStyle(e,null)),!i&&e.currentStyle&&(i=e.currentStyle),i||(i=e.style),i}(e);return i.WebKitCSSMatrix?(n=a.transform||a.webkitTransform,n.split(",").length>6&&(n=n.split(", 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c=i.maxTranslate()-i.minTranslate();o=0===c?0:(e-i.minTranslate())/c,o!==a&&i.updateProgress(e),i.emit("setTranslate",i.translate,t)},minTranslate:function(){return-this.snapGrid[0]},maxTranslate:function(){return-this.snapGrid[this.snapGrid.length-1]},translateTo:function(e,t,i,s,n){void 0===e&&(e=0),void 0===t&&(t=this.params.speed),void 0===i&&(i=!0),void 0===s&&(s=!0);const r=this,{params:a,wrapperEl:o}=r;if(r.animating&&a.preventInteractionOnTransition)return!1;const l=r.minTranslate(),d=r.maxTranslate();let c;if(c=s&&e>l?l:s&&e<d?d:e,r.updateProgress(c),a.cssMode){const e=r.isHorizontal();if(0===t)o[e?"scrollLeft":"scrollTop"]=-c;else{if(!r.support.smoothScroll)return Ie({swiper:r,targetPosition:-c,side:e?"left":"top"}),!0;o.scrollTo({[e?"left":"top"]:-c,behavior:"smooth"})}return!0}return 0===t?(r.setTransition(0),r.setTranslate(c),i&&(r.emit("beforeTransitionStart",t,n),r.emit("transitionEnd"))):(r.setTransition(t),r.setTranslate(c),i&&(r.emit("beforeTransitionStart",t,n),r.emit("transitionStart")),r.animating||(r.animating=!0,r.onTranslateToWrapperTransitionEnd||(r.onTranslateToWrapperTransitionEnd=function(e){r&&!r.destroyed&&e.target===this&&(r.wrapperEl.removeEventListener("transitionend",r.onTranslateToWrapperTransitionEnd),r.onTranslateToWrapperTransitionEnd=null,delete r.onTranslateToWrapperTransitionEnd,r.animating=!1,i&&r.emit("transitionEnd"))}),r.wrapperEl.addEventListener("transitionend",r.onTranslateToWrapperTransitionEnd))),!0}},transition:{setTransition:function(e,t){const i=this;i.params.cssMode||(i.wrapperEl.style.transitionDuration=`${e}ms`,i.wrapperEl.style.transitionDelay=0===e?"0ms":""),i.emit("setTransition",e,t)},transitionStart:function(e,t){void 0===e&&(e=!0);const 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t.el&&(t.el.removeEventListener("focus",x,!0),t.el.removeEventListener("pointerdown",w,!0),t.el.removeEventListener("pointerup",S,!0))}()}))}Object.keys(ct).forEach((e=>{Object.keys(ct[e]).forEach((t=>{pt.prototype[t]=ct[e][t]}))})),pt.use([function(e){let{swiper:t,on:i,emit:s}=e;const n=Se();let r=null,a=null;const o=()=>{t&&!t.destroyed&&t.initialized&&(s("beforeResize"),s("resize"))},l=()=>{t&&!t.destroyed&&t.initialized&&s("orientationchange")};i("init",(()=>{t.params.resizeObserver&&void 0!==n.ResizeObserver?t&&!t.destroyed&&t.initialized&&(r=new ResizeObserver((e=>{a=n.requestAnimationFrame((()=>{const{width:i,height:s}=t;let 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bt=s(sciencenewsClassnames.carousel),yt=i(997),wt=i(2557),St={name:"carousel",component:class{constructor(e){let{element:t,children:i,options:s}=e;this.element=t,this.children=i,this.options=s,D({"":{}},"sciencenews");const{controlsWrapper:n,slides:r}=this.children,{moduleStyles:a}=this.options;Object.assign(this,{controlsWrapper:n,slides:r,moduleStyles:a}),this.slideCount=this.slides.length,this.createControl=this.createControl.bind(this),this.addIndicators=this.addIndicators.bind(this),this.addCarouselControls=this.addCarouselControls.bind(this),this.updateIndicators=this.updateIndicators.bind(this),this.completeCarouselSetup=this.completeCarouselSetup.bind(this),this.init()}init(){const{perPage:e,draggable:t,loop:i}=this.options,{perPage:s}=this.element.dataset;let n=1;void 0===e&&void 0===s||(n=void 0===s?e:JSON.parse(s));const r={};"object"==typeof 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s=this.createControl("previous");this.prev=s.querySelector("button"),this.prev.setAttribute("aria-disabled","true"),t.appendChild(s);const n=this.createControl("next");this.next=n.querySelector("button"),t.appendChild(n),e.appendChild(t)}updateIndicators(){const e=this?.carousel?.realIndex||0,t=this.element.querySelector(`.${this.moduleStyles.indicators}`);if(null!==t){const i=Array.from(t.children);for(let t=0;t<i.length;t+=1)i[t].classList.contains(this.moduleStyles.indicatorActive)&&i[t].classList.remove(this.moduleStyles.indicatorActive),t===e&&i[t].classList.add(this.moduleStyles.indicatorActive)}}},querySelector:{swiper:".swiper",controlsWrapper:bt.controlsWrapper},querySelectorAll:{slides:bt.wrapper},options:{perPage:{320:1,768:2,1024:4},draggable:!H.lgMin.matches,icons:{previous:yt,next:wt},moduleStyles:{controls:"carousel-module__controls___ZojAW",previous:"carousel-module__previous___oay9d",next:"carousel-module__next___PmMba"}}};t(St);var Et=i(8551),xt=i.n(Et);t({name:"video-player",component:class{constructor(e){let{element:t,children:i,options:s}=e;this.element=t,this.children=i,this.options=s;const{children:{videoContainer:n,videoLink:r},options:{playerVars:a}}=this,{videoId:o}=r.dataset;this.playerId=n.id,this.player={},this.iframeElement=null,this.videoOptions={videoId:o,playerVars:a,events:{onReady:this.playerReady.bind(this)}},this.insertYouTubeScript=this.insertYouTubeScript.bind(this),this.youTubeIframeAPIReady=this.youTubeIframeAPIReady.bind(this),this.calcInitialIframeSize=this.calcInitialIframeSize.bind(this),this.handleKeydown=this.handleKeydown.bind(this),this.loadVideo=this.loadVideo.bind(this),this.killPlayer=this.killPlayer.bind(this),this.resizeIframe=this.resizeIframe.bind(this),this.registerEventListeners=this.registerEventListeners.bind(this),this.registerEventListeners()}handleKeydown(e){const{SPACE:t}=B;t===e.keyCode&&(e.preventDefault(),this.loadVideo(e))}registerEventListeners(){const{videoLink:e,videoIcon:t}=this.children;t.removeAttribute("data-video-loading"),e.setAttribute("role","button"),e.addEventListener("keydown",this.handleKeydown),e.addEventListener("click",this.loadVideo)}insertYouTubeScript(){if(null===document.getElementById("yt-iframe-api")){const e=document.createElement("script");e.id="yt-iframe-api",e.src="https://www.youtube.com/iframe_api";const t=document.getElementsByTagName("script")[0];t.parentNode.insertBefore(e,t)}const e=window.onYouTubeIframeAPIReady;window.onYouTubeIframeAPIReady=()=>{"function"==typeof e&&e(),this.youTubeIframeAPIReady()}}youTubeIframeAPIReady(){xt().measure(this.calcInitialIframeSize),xt().mutate((()=>{this.element.classList.add("player-active"),this.player instanceof YT.Player||(this.player=new YT.Player(this.playerId,this.videoOptions)),this.playerReady(),this.iframeElement=document.getElementById(this.playerId)})),window.addEventListener("resize",this.resizeIframe)}calcInitialIframeSize(){const e=this.element.offsetWidth,t=Math.floor(e*(9/16));Object.assign(this.videoOptions,{height:t,width:e})}resizeIframe(){null!==this.iframeElement&&xt().measure((()=>{const e=this.element.offsetWidth;xt().mutate((()=>{this.iframeElement.setAttribute("height",e*(9/16)),this.iframeElement.setAttribute("width",e)}))}))}loadVideo(e){const{videoId:t}=this.videoOptions;t&&(e.preventDefault(),window.YT?.Player?this.youTubeIframeAPIReady():this.insertYouTubeScript())}playerReady(e){const{height:t,width:i}=this.videoOptions,s=void 0===e?YT.get(this.playerId):e.target;s.setSize(i,t),s.playVideo&&s.playVideo()}killPlayer(){this.player instanceof YT.Player&&(this.player.destroy(),this.player={},this.element.classList.remove("player-active"))}},querySelector:{videoContainer:'[id^="video-container-"]',videoLink:".thumbnail",thumbnail:".figure",videoIcon:"span[data-video-loading]"},querySelectorAll:{},options:{playerVars:{modestbranding:1,rel:0,autoplay:!1,enablejsapi:1,playsinline:1}}})}()}();
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