:root {
  --blue: #5563c1;
  --body: #262626;
  --darkGray: #363636;
  --gray: #474747;
}

/*****************************************************/
/*****************************************************/

html {
	scroll-behavior: smooth;
	-webkit-text-size-adjust: 100%;
}

body {
	margin: 0;
	color: #1a1a1a;
	font-family: Georgia,serif;
	font-size: 100%;
	line-height: 1.5;
	font-weight: 400;
	-webkit-font-smoothing: antialiased;
	padding: 0;
}

div {
	display: block;
}

* {
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
}

a {	
	text-decoration: none;
	color:  black;
}

a:hover {	
	text-decoration: none;
	color:  var(--blue);
}

ol, ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

li {
    display: list-item;
    text-align: -webkit-match-parent;
}

.ht, h1, h2, h3, h4, h5, h6 {
    font-family: Georgia,serif;
    font-family: Avenir,Pangram,Helvetica,sans-serif;
    font-weight: 600;
    margin: 1.75em 0 0.875em;
    font-size: 1rem;
    line-height: 1.3;
}

h1 {
	font-size: 1.7rem;
	font-family: Georgia;
}

h2 {
	font-size: 1.9rem;
	font-family: Georgia;
}

h4 {
	width: 100%;
	text-align:  center;
	border-bottom: 1px solid var(--blue);
	line-height: 0.1em;
	margin: 20px 0 20px;
	font-size: 0.9rem;
	font-weight: bold;
	font-family: Georgia;
}

h4 span { 
    background:#fff; 
    padding:0 0.45rem; 
}

@media (min-width: 34em) {
	h2 {
		font-size: 2.3rem;
	}
}

p {
	line-height: 1.8;
	display: block;
    margin-block-start: 1em;
    margin-block-end: 1em;
    margin-inline-start: 0px;
    margin-inline-end: 0px;
}

.p, scale0 {
	font-size: 1rem;
	font-family: Avenir,Pangram,Helvetica,sans-serif;
}

.absolute {
	position: absolute;
}

.fixed {
	position: fixed;
}


.relative {
	position: relative;
}

.z0 {
	z-index: 0;
}

.z1 {
	z-index: 100;
}

.z9 {
	z-index: 900;
}


.fit-t, .fit-x {
	top: 0;
}

.fit-b, .fit-x {
	bottom: 0;
}

.fit-l, .fit-x {
	left: 0;
}

.fit-r, .fit-x {
	right: 0;
}

.pv05 {
	padding-bottom: 0.5em;
}

.pv05 {
	padding-top: 0.5em;
}

.pv1 {
	padding-bottom: 1em;
}

.pv1 {
	padding-top: 1em;
}

.pv15 {
	padding-bottom: 1.5em;
}

.pv15 {
	padding-top: 1.5em;
}

.pb05 {
	padding-bottom: 0.5em;
}

.pb1 {
	padding-bottom: 1em;
}

.pb2 {
	padding-bottom: 2em;
}

.pr3 {
	padding-right: 3em;
}

.mv0 {
    margin-top: 0;
}

.ph1 {
	padding-right: 1em;
	padding-left: 1em;
}

.mv0 {
    margin-bottom: 0;
}

.mb-02 {
	margin-bottom: -0.2em;
}

.mb025 {
    margin-bottom: 0.25em;
}

.mv05 {
    margin-top: 0.5em;
}

.mv025 {
    margin-top: 0.25em;
    margin-bottom: 0.25em;
}

.mb03 {
	margin-bottom: 0.3em;
}

.mv05, .mb05 {
    margin-bottom: 0.5em;
}

.mv1 {
	margin-top: 1em;
	margin-bottom: 1em;
}

.mba, .mva, .mxa {
    margin-bottom: auto;
}

.mb1 {
	margin-bottom:  1em;
}

.mta, .mva, .mxa {
    margin-top: auto;
}

.mr05 {
	margin-right: 0.5em;
}

.mha, .mra, .mxa {
    margin-right: auto;
}

.mha, .mla, .mxa {
    margin-left: auto;
}

.mh0, .mr0, .mx0 {
    margin-right: 0;
}

.mh0, .ml0, .mx0 {
    margin-left: 0;
}

.mv0, .mt0, .mx0 {
    margin-top: 0;
}

.mv0, .mb0, .mx0 {
    margin-bottom: 0;
}

.mt025 {
	margin-top: 0.25em;
}

.mt05 {
	margin-top: 0.5em;
}

.mt1 {
	margin-top: 1em;
}

.mt2 {
	margin-top: 2em;
}

.mt3 {
	margin-top: 3em;
}

.mh1, .mr1, .mx1 {
    margin-right: 1em;
}

.mh1, .ml1, .mx1 {
    margin-left: 1em;
}

.mb2 {
	margin-bottom: 2em;
}

.mh025 {
    margin-right: 0.25em;
}

.mh025 {
    margin-left: 0.25em;
}

.mh05 {
    margin-right: 0.5em;
}

.mh05 {
    margin-left: 0.5em;
}

.fill-v {	
	height: 100%;
}

.fill-h {	
	width: 100%;
}

.flex {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
}

.flex-wrap {
	-ms-flex-wrap:  wrap;
	flex-wrap: wrap;
}

.align-center {
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
}

.wrapper {	
	padding-left: 1.25rem;
	padding-right: 1.25rem;
}


@media (min-width: 50em) {
	.wrapper {	
		padding-left: 2rem;
		padding-right: 2rem;
	}
}	

@media (min-width: 50em) {
	.wrapper-content {	
		padding-left: 4rem;
		padding-right: 4rem;
	}
}

.object-fit-child {
	width:  100%;
	height: 100%;
	object-fit: cover;
}

.text-c {
	text-align: center;
}

.emph {
/*	font-style: italic;*/
}

.small {
	font-size: 0.9rem;
}

.big {
	font-size: 2rem;
}

.scriptsize {
	font-size: 0.8em;
}

.fatty {
	font-weight: 500;
}

.clearfix:after, .clearfix: before {
    content: " ";
    display: table;
    clear: both;
    line-height: 0;
    height: 0;
}

.clearfix {
    display: inline-block;
}

/*****************************************************/
/*****************************************************/

.cblackish {
	background-image: linear-gradient(rgb(0, 2, 69), rgba(0, 2, 69, 0.05) 90%, rgba(0, 2, 69, 0));
    opacity: 0.9;
}

.cwhite {
	color: white;
}

.cblue {
	color: var(--blue);
	opacity: .8;
}

.cgray {
	color: var(--gray);
}

.cdgray {
	color: var(--darkGray);
}

.lit {
	color:  var(--blue);
}

.lit:hover {
	color:  var(--darkGray);
}

/*****************************************************/
/*****************************************************/


.nav_container {
	max-width: calc(1165px + 4rem);
	height: 55px;
	margin-left: auto;
	margin-right: auto;
}

@media (min-width: 34em) {
	.nav_container {
	    height: 60px;
	}
}

.nav_bar {
	height: 55px;
}

@media (min-width: 34em) {
	.nav_bar {
		height: 60px;
	}
}

.nav_bar.is-hidden {
	background-color: var(--blue);
}

.nav_gradient {
    display: none;
    -webkit-transition: -webkit-transform .5s ease-in-out;
    transition: -webkit-transform .5s ease-in-out;
    transition: transform .5s ease-in-out;
    transition: transform .5s ease-in-out,-webkit-transform .5s ease-in-out;
    pointer-events: none;
    height: 100px;
}


@media (min-width: 66em) {
	.nav_gradient {
		display: block;
		height: 150px;
	}
}

.nav_gradient.is-hidden {
    -webkit-transform: translateY(-100%);
    transform: translateY(-100%);
}

.header_group {
	height: 100%;
}

.header_main {
	display: none;
}

@media (min-width: 45em) {
	.header_main {
		display: -webkit-box;
		display: -ms-flexbox;
		display: flex;
		flex:  1 1 auto;
		justify-content: flex-end;
	}
}

.header_divider {
	width: 1px;
	color: white;
}

.header_logo {
	position: relative;
    font-family: Georgia,serif;
    font-family: Avenir,Pangram,Helvetica,sans-serif;
    font-weight: 600;
    font-size: 1.3rem;
}

.header_logo:hover {
	color: white;
}

.header_divider:after {
    content: "";
    display: block;
    height: 50%;
    width: 100%;
    background-color: currentColor;
    margin: auto;
    opacity: .2;
}

.header_link {
	height: 100%;
	padding-left: 0.25em;
	padding-right: 0.25em;
}

.header_tail {
	display: -webkit-box;
	display: -ms-flexbox;
	display: flex;
	flex:  1 1 auto;
	justify-content: flex-end;
}

@media (min-width: 45em) {
	.header_tail {
		display: none;
	}
}

.nav_overlay {
	width: 0;
	background-color: rgb(0,0,0);
	background-color: rgba(0,0,0,0.9);
	overflow-x: hidden;
	transition: 0.3s;
}

.nav_overlay_content ul {
	top: 20%;
}


/*****************************************************/
/*****************************************************/

.image {	
	overflow: hidden;
}

.image_inner {	
	overflow: hidden;
}

.image_inner img {	
	overflow: hidden;
	object-fit: cover;
}

.image:before {
    content: "";
    display: block;
    position: absolute;
    left: 1em;
    top: 1em;
}

.image-wide {
	padding-top: 50%;
}

@media (min-width: 66em) {
	.image-wide {
		padding-top: 30%;
	}
}

/*****************************************************/
/*****************************************************/

.page-title {
	max-width: 800px;
	margin-top: -4em;
}

@media (min-width: 50em) {
	.page-title {
		margin-top: -4em;
	}
}

.page-title_inner {
	background-color: white;
	padding: 10px 1.5em 10px;
}

@media (min-width: 50em) {
	.page-title_inner {
		background-color: white;
		padding: 20px 100px 20px;
	}	
}

.page-title_shadow {
    height: 30px;
    -webkit-transform: translateY(29%);
    transform: translateY(29%);
    background: radial-gradient(ellipse at center,rgba(85,104,193,.6) 0,transparent 70%);
}

/*****************************************************/
/*****************************************************/

.container-m {
	max-width: 1160px;
	width: 100%;
}

@media (min-width: 66em) {
	.block {
		-ms-flex-wrap: nowrap;
		flex-wrap: nowrap;
	}
}

.block_content {
    margin-bottom: 1.5em;
}

@media (min-width: 66em) {
	.block_content {
	    margin-bottom: 1.5em;
	    width: calc(100% - 468px);
	}
}

.block_content .whoiam {
	font-family: Georgia;
	color: var(--darkGray);
}

.block_divider {
    display: none;
    width: 1px;
    height: auto;
    background: var(--blue);
    opacity: 1;
}

@media (min-width: 66em) {
	.block_divider {
	    display: block;
	    margin: 0 3em;
	}
}


@media (min-width: 66em) {
	.block_widget{
	    width: 360px;
	}
}

/*****************************************************/
/*****************************************************/

.bio {
	display: none;
}

.bio_row {
	flex-direction: row;
	justify-content: space-between;
	text-align: center;
	align-items: flex-start;
}

.bio_row>*:nth-child(4n+2){
}

.bio_row>*:nth-child(4){
}

@media (min-width: 66em) {
	.bio{
	    display: block;
	}
}

.bio_arrow:before {
    width: calc(100% - 4px);
    height: 1px;
    background: var(--blue);
    content: "";
    display: inline-block;
    vertical-align: middle;
}

.bio_arrow:after {
    content: "";
    display: inline-block;
    width: 0;
    height: 0;
    border-left: 4px solid var(--blue);
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
}

.bio_column-logo {
	width: 13%;
}


.bio_logo img {
	width: 85%;
}

.bio_year {
	font:  monospace;
}

.bio_uni {
	line-height: 1.3;
	margin-left: -1.7em;
	margin-right: -1.7em;
}

.bio_logo .pi {
	opacity: .35;
}

.bio_logo .pi:hover {
	opacity: 1;
}

.bio_logo .mpi {
	opacity: .75;
}

.bio_logo .mpi:hover {
	opacity: 1;
}

.bio_logo .ghent {
	opacity: .5;
}

.bio_logo .ghent:hover {
	opacity: 1;
}

.bio_logo .ihes {
	opacity: .65;
}

.bio_logo .ihes img {
	width: 112%;
	margin-top: -12%;
	margin-bottom: -12%;
	margin-left: -12%;
}

.bio_logo .ihes:hover {
	opacity: 1;
}


/*****************************************************/
/*****************************************************/

.news_title {
	margin-bottom: 0.4em;
}

@media (min-width: 66em)
	.news_container_inner {
	    width: 100%;
}

.news_container {
	height: 600px;
	overflow-y: auto;
}


.news_date {
	font-family: monospace;
}

.news {
	overflow: hidden;
}

.news .news_logo {
    width: 40px;
    height: 40px;
    background-color: var(--blue);
    border-radius: 10px 10px 10px 10px;
    float: left;
    opacity: .7;
}

.news .news_logo_inner {
	font-size: 1.7rem;
	color:  white;
	text-align: center;
	top:  calc((40px - 1.7rem)/2);
}

.news .news_content {
    width: calc(100% - 40px - 1em);
    float: left;
    margin-top: 0;
    margin-left: 1em;
}

.news_title {
	font-weight: 600;
	color:  black;
}

.news_title:hover {
	color:  var(--blue);
}

.news_description {
	line-height:  1.5;
	font-size: .8rem;
}

/*****************************************************/
/*****************************************************/

.grid-row {
	margin-left: -20px;
	margin-right: -20px;
}

@media (min-width: 66em) {	
	.grid-wide {
	    display: -webkit-box;
	    display: -ms-flexbox;
	    display: flex;
	    -ms-flex-wrap: wrap;
	    flex-wrap: wrap;
	}
}	


@media (min-width: 66em) {
	.triple-item {
		width: 33.3333%;
	}
}

.highlights_item {
	margin-bottom: 1em;
}

@media (min-width: 66em) {	
	.highlights>*:nth-child(n+4){
		padding-top: 1em;
	}
}

@media (min-width: 66em) {	
	.highlights_item {
		margin-bottom: 0em;
	}
}

.highlights_item {
    padding-left: 20px;
    padding-right: 20px;
}


.highlights_image {
    float: left;
    width: calc(50% - 1em);
    margin-bottom: 1em;
    margin-right: 1em;
}

.highlights_image .image {
	padding-top: 60%;
}


@media (min-width: 34em) {
	.highlights_image {
	    margin-right: 0;
	    margin-bottom: 0;
	    width: calc(50% - 20px);
	}
}


@media (min-width: 66em) {
	.highlights_image {
	    margin-bottom: 1.7em;
	    margin-right: 0;
	}
}

@media (min-width: 34em) {
	.highlights_description {
	    margin-top: 0;
	    margin-left: 40px;
	}
}

@media (min-width: 66em) {
	.highlights_description {
    	margin-left: 0;
	}
}

@media (min-width: 34em) {
	.highlights_description, .highlights_image {
	    width: calc(50% - 20.5px);
	    float: left;
	}
}

@media (min-width: 66em) {
	.highlights_description, .highlights_image {
	    float: none;
	    width: 100%;
	}
}

.highlights_authors, .publications_authors {
	clear: both;
	margin-top: -0.2em;
}

.highlights_arxiv, .publications_arxiv, .digest_arxiv {
	font-family: monospace;
	color: inherit;
	font-size: 0.9rem;
}

.highlights_arxiv:hover, .publications_arxiv:hover, .publications_link:hover {
	cursor: pointer;
	color: var(--blue);
}

.publications_item {
	margin-bottom: 1em;
}

.publications {
	color: var(--darkGray);
}

.publications_foreword, .digest_foreword {
	font-family: Georgia;
}

.highlights_image:hover .image-credit {
	visibility: visible;
	opacity: 1;
}

.image-credit {
	background-color: rgba(255,255,255,0.8);
	visibility: hidden;
	opacity: 0;
	transition: opacity .2s, visibility .2s;
}

/*****************************************************/
/*****************************************************/

.contact_inner .p {
	font-family: Georgia;
	color: var(--darkGray);
}

.social {
	justify-content: center;
}

.social .social_logo {
    width: 40px;
    height: 40px;
    justify-content: center;
    align-items: center;
}

.social .social_logo_inner {
	font-size: 1.8rem;
	color:  var(--blue);
	opacity: .7;
	text-align: center;
	transition: font-size cubic-bezier(0.25, 1, 0.5, 1) 100ms;
}

.social .social_logo_inner:hover {
	font-size: 2.8rem;
}

/*****************************************************/
/*****************************************************/

.popup {
	display: block;
	background-color: var(--blue);
	border-radius: 5px 5px 5px 5px;
	width: 90%;
	position: fixed;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
}

.popup.is-hidden {
	display: none;
}

.popup_times {
	text-align: right;
	padding-right: .4rem;
}

.popup_times span {
	color: white;
}

.popup .p {
    font-family: Georgia;
    color: white;
    margin-top: -1em;
    padding-left: 1.25rem;
    padding-right: 1.25rem;
}

@media (min-width: 34em) {
	.popup {
		max-width: 400px;
		left: 50%;
	}
}

.robot_puzzle {
	-ms-flex-wrap: wrap;
	flex-wrap: wrap;
	flex-direction: row;
    justify-content: space-between;
    text-align: center;
    align-items: flex-start;
    padding-left: 1.25rem;
    padding-right: 1.25rem;
}

.robot_puzzle_item {
	width: 25%;
	height: 25%;
	justify-content: center;
	color: white;
	font-size: 1rem;
	font-family: Avenir,Pangram,Helvetica,sans-serif;
}


/*****************************************************/
/*****************************************************/

.digest_authors {
	text-transform: uppercase;
}