@charset "UTF-8";@font-face{font-family:"et-book";src:url("https://edwardtufte.github.io/tufte-css/et-book/et-book-roman-line-figures/et-book-roman-line-figures.ttf");font-weight:normal;font-style:normal}@font-face{font-family:"et-book";src:url("https://edwardtufte.github.io/tufte-css/et-book/et-book-display-italic-old-style-figures/et-book-display-italic-old-style-figures.ttf");font-weight:normal;font-style:italic}@font-face{font-family:"et-book";src:url("https://edwardtufte.github.io/tufte-css/et-book/et-book-bold-line-figures/et-book-bold-line-figures.ttf");font-weight:bold;font-style:normal}@font-face{font-family:"et-book-roman-old-style";src:url("https://edwardtufte.github.io/tufte-css/et-book/et-book-roman-old-style-figures/et-book-roman-old-style-figures.ttf");font-weight:normal;font-style:normal}html{font-size:15px}body{width:87.5%;margin-left:auto;margin-right:auto;padding-left:12.5%;font-family:et-book,Palatino,"Palatino Linotype","Palatino LT STD","Book Antiqua",Georgia,serif;background-color:#fffff8;color:#111;max-width:1400px;counter-reset:sidenote-counter}h1{font-weight:400;margin-top:4rem;margin-bottom:1.5rem;font-size:3.2rem;line-height:1}h2{font-style:italic;font-weight:400;margin-top:2.1rem;margin-bottom:0;font-size:2.2rem;line-height:1}h3{font-style:italic;font-weight:400;font-size:1.7rem;margin-top:2rem;margin-bottom:0;line-height:1}p.subtitle{font-style:italic;margin-top:1rem;margin-bottom:1rem;font-size:1.8rem;display:block;line-height:1}.numeral{font-family:et-book-roman-old-style}.danger{color:red}article{position:relative;padding:5rem 0rem}section{padding-top:1rem;padding-bottom:1rem}p,ol,ul{font-size:1.4rem}p{line-height:2rem;margin-top:1.4rem;margin-bottom:1.4rem;padding-right:0;vertical-align:baseline}td,tfoot{padding-top:1.4em;padding-bottom:1.4em;font-size:1.4rem}td,th,tfoot{text-align:left}div.epigraph{margin:5em 0}div.epigraph>blockquote{margin-top:3em;margin-bottom:3em}div.epigraph>blockquote,div.epigraph>blockquote>p{font-style:italic}div.epigraph>blockquote>footer{font-style:normal}div.epigraph>blockquote>footer>cite{font-style:italic}blockquote{font-size:1.4rem}blockquote p{width:50%}blockquote footer{width:50%;font-size:1.1rem;text-align:right}ol,ul{width:45%;-webkit-padding-start:5%;-webkit-padding-end:5%}li{padding:.5rem 0}figure{padding:0;border:0;font-size:100%;font:inherit;vertical-align:baseline;max-width:55%;-webkit-margin-start:0;-webkit-margin-end:0;margin:0 0 3em 0}figcaption{float:right;clear:right;margin-right:-48%;margin-top:0;margin-bottom:0;font-size:1.1rem;line-height:1.6;vertical-align:baseline;position:relative;max-width:40%}figure.fullwidth figcaption{margin-right:24%}a:link,a:visited{color:inherit}a:link{text-decoration:none;background:-webkit-linear-gradient(#fffff8,#fffff8),-webkit-linear-gradient(#fffff8,#fffff8),-webkit-linear-gradient(#333,#333);background:linear-gradient(#fffff8,#fffff8),linear-gradient(#fffff8,#fffff8),linear-gradient(#333,#333);-webkit-background-size:.05em 1px,0.05em 1px,1px 1px;-moz-background-size:.05em 1px,0.05em 1px,1px 1px;background-size:.05em 1px,0.05em 1px,1px 1px;background-repeat:no-repeat,no-repeat,repeat-x;text-shadow:.03em 0 #fffff8,-0.03em 0 #fffff8,0 .03em #fffff8,0 -0.03em #fffff8,0.06em 0 #fffff8,-0.06em 0 #fffff8,0.09em 0 #fffff8,-0.09em 0 #fffff8,0.12em 0 #fffff8,-0.12em 0 #fffff8,0.15em 0 #fffff8,-0.15em 0 #fffff8;background-position:0 93%,100% 93%,0 93%}nav{display:none}video{max-width:100%}@media screen and (-webkit-min-device-pixel-ratio:0){a:link{background-position-y:87%,87%,87%}}a:link::selection{text-shadow:.03em 0 #b4d5fe,-0.03em 0 #b4d5fe,0 .03em #b4d5fe,0 -0.03em #b4d5fe,0.06em 0 #b4d5fe,-0.06em 0 #b4d5fe,0.09em 0 #b4d5fe,-0.09em 0 #b4d5fe,0.12em 0 #b4d5fe,-0.12em 0 #b4d5fe,0.15em 0 #b4d5fe,-0.15em 0 #b4d5fe;background:#b4d5fe}a:link::-moz-selection{text-shadow:.03em 0 #b4d5fe,-0.03em 0 #b4d5fe,0 .03em #b4d5fe,0 -0.03em #b4d5fe,0.06em 0 #b4d5fe,-0.06em 0 #b4d5fe,0.09em 0 #b4d5fe,-0.09em 0 #b4d5fe,0.12em 0 #b4d5fe,-0.12em 0 #b4d5fe,0.15em 0 #b4d5fe,-0.15em 0 #b4d5fe;background:#b4d5fe}img{max-width:100%}.footnote{float:right;clear:right;margin-right:-60%;width:50%;margin-top:0;margin-bottom:0;font-size:1.1rem;line-height:1.3;vertical-align:baseline;position:relative}.table-caption{float:right;clear:right;margin-right:-60%;width:50%;margin-top:0;margin-bottom:0;font-size:1.0rem;line-height:1.6}.footnote a:after,.footnote:before{content:counter(sidenote-counter) " ";font-family:et-book-roman-old-style;position:relative;vertical-align:baseline}.footnote a:after{content:counter(sidenote-counter);font-size:1rem;top:-0.5rem;left:.1rem}.footnote:before{content:counter(sidenote-counter) " ";top:-0.5rem}p,footer,table,div.table-wrapper-small,div.supertable-wrapper>p,div.booktabs-wrapper{width:55%}div.fullwidth,table.fullwidth{width:100%}div.table-wrapper{overflow-x:auto;font-family:"Trebuchet MS","Gill Sans","Gill Sans MT",sans-serif}@media screen and (max-width:760px){p,footer{width:90%}pre.code{width:87.5%}ul{width:85%}figure{max-width:90%}figcaption,figure.fullwidth figcaption{margin-right:0;max-width:none}blockquote p,blockquote footer{width:90%}}.sans{font-family:"Gill Sans","Gill Sans MT",Calibri,sans-serif;letter-spacing:.03em}.code{font-family:Consolas,"Liberation Mono",Menlo,Courier,monospace;font-size:1.125rem;line-height:1.6}h1 .code,h2 .code,h3 .code{font-size:.80em}.marginnote .code,.sidenote .code{font-size:1rem}pre.code{width:52.5%;padding-left:2.5%;overflow-x:auto}.fullwidth{max-width:90%;clear:both}span.newthought{font-variant:small-caps;font-size:1.2em}input.margin-toggle{display:none}label.sidenote-number{display:inline}label.margin-toggle:not(.sidenote-number){display:none}@media(max-width:760px){label.margin-toggle:not(.sidenote-number){display:inline}.footnote,.marginnote{display:none}.margin-toggle:checked+.sidenote,.margin-toggle:checked+.marginnote{display:block;float:left;left:1rem;clear:both;width:95%;margin:1rem 2.5%;vertical-align:baseline;position:relative}label{cursor:pointer}pre.code{width:90%;padding:0}.table-caption{display:block;float:right;clear:both;width:98%;margin-top:1rem;margin-bottom:.5rem;margin-left:1%;margin-right:1%;vertical-align:baseline;position:relative}div.table-wrapper,table,table.booktabs{width:85%}div.table-wrapper{border-right:1px solid #efefef}img{width:100%}}