.study-switch{display:flex;gap:20px;margin:22px 0 14px;font-size:14px}.pdf-help{font-size:12px;color:#687078;line-height:1.6;max-width:680px}.study-controls{display:flex;justify-content:flex-end;align-items:center;gap:18px;margin:24px 0 12px}.study-sheet{color:#263b3c;isolation:isolate;border:1px solid #d7d6c9;box-shadow:0 8px 25px #182b3010;border-radius:3px;overflow:hidden;scroll-margin-top:25px;margin-bottom:35px}.lab-notebook{position:relative;background-color:#faf8ef;background-image:repeating-linear-gradient(transparent 0,transparent 31px,#8199a51c 31px,#8199a51c 32px);padding:36px 36px 24px 56px}.lab-notebook::before{content:'';position:absolute;left:35px;top:0;bottom:0;border-left:1px solid #bc666649;z-index:-1}.sheet-header{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;border-bottom:1px solid #8c9b9540;padding-bottom:25px;margin-bottom:24px}.sheet-eyebrow{font:10px/1.6 Consolas,monospace;letter-spacing:1.8px;color:#657773;margin-bottom:14px}.sheet-header h2{font-size:clamp(24px,2.5vw,34px);line-height:1.25;margin:0;overflow-wrap:anywhere}.lab-stamp{display:flex;flex-direction:column;align-items:center;justify-content:center;flex-shrink:0;width:94px;height:108px;border:1px dashed #34544e8c;border-radius:50%;transform:rotate(-8deg);opacity:.72;padding:7px;text-align:center}.lab-stamp img{width:55px;height:55px;border-radius:50%;object-fit:contain;filter:grayscale(1)}.lab-stamp span{font:8px/1.4 Consolas,monospace;letter-spacing:1px;margin-top:4px}.blog-content{min-height:320px;line-height:2}.blog-content img,.blog-content video,.blog-content iframe{max-width:100%;height:auto}.blog-content iframe{width:100%;aspect-ratio:16/9}.blog-content pre{white-space:pre-wrap;overflow-wrap:anywhere}.blog-content table{max-width:100%}.content-pending{font-style:italic;color:#7a8179;font-size:14px}.sheet-footer{border-top:1px solid #8c9b9540;display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;padding-top:15px;margin-top:24px;font:10px/1.7 Consolas,monospace;color:#63736c}.sheet-footer small{font-size:9px;max-width:280px}.flash-controls{justify-content:space-between;margin-top:40px}.flash-controls h2{font-size:23px;margin:0}.lab-flashcard{padding:30px 36px 22px;background-color:#f0f3e9;background-image:radial-gradient(#8da09840 .7px,transparent .7px);background-size:12px 12px;border-top:5px solid #254448}.flash-content{display:grid;grid-template-columns:1fr 1fr;gap:22px}.flash-content section:first-child{grid-column:1/-1}.flash-content section{padding:15px;background:#fafbf2c9;border:1px solid #9cae9b4a;border-radius:3px}.flash-content h3{font:11px/1.6 Consolas,monospace;text-transform:uppercase;letter-spacing:1px;margin-bottom:10px}.flash-content p{margin-bottom:0}.study-page>.back-link{display:inline-block;margin:5px 0 20px}.study-sheet a{overflow-wrap:anywhere}
@media(max-width:600px){.lab-notebook{padding:24px 18px 20px 30px}.lab-notebook::before{left:18px}.lab-flashcard{padding:24px 20px}.sheet-header{gap:12px}.sheet-header h2{font-size:23px}.lab-stamp{width:65px;height:83px}.lab-stamp img{width:40px;height:40px}.lab-stamp span{font-size:6px;letter-spacing:.5px}.flash-content{grid-template-columns:1fr}.blog-content{min-height:260px}.sheet-footer{flex-direction:column}.study-controls{flex-wrap:wrap}.pdf-button{min-height:42px}}
.lab-notebook{background-color:#fff;background-image:linear-gradient(#fff 0,#fff 83px,transparent 83px),repeating-linear-gradient(transparent 0,transparent 27px,#a9cdec 27px,#a9cdec 28px);padding-left:calc(12% + 20px);border:0}.lab-notebook::before{left:12%;border-left:1px solid #f2b6c2;z-index:0;pointer-events:none}.lab-notebook .sheet-header{border-bottom:0}.lab-notebook .blog-content{line-height:28px}.lab-notebook .sheet-footer{background:#ffffffd9}
@media(max-width:600px){.lab-notebook{padding-left:calc(12% + 12px)}.lab-notebook::before{left:12%}}
/* The website is one squared, ring-bound notebook page. PDF skins stay separate. */
@media screen{
 .study-page>h1,.study-page .lab-flashcard,.lab-notebook .lab-stamp,.lab-notebook .sheet-eyebrow,.lab-notebook .sheet-footer{display:none}
 .study-page .lab-notebook{position:relative;margin-top:28px;padding:38px 30px 35px 70px;background-color:#fff;--paper-margin:50px;background-image:linear-gradient(90deg,transparent calc(var(--paper-margin) - 1px),#df9ba7 calc(var(--paper-margin) - 1px),#df9ba7 var(--paper-margin),transparent var(--paper-margin)),linear-gradient(#a7c7de36 1px,transparent 1px),linear-gradient(90deg,#a7c7de36 1px,transparent 1px);background-size:100% 100%,24px 24px,24px 24px;border:1px solid #dbe0e3;border-radius:0;box-shadow:3px 7px 22px #182b3014;overflow:visible}
 .study-page .lab-notebook::before{left:9px;top:18px;bottom:18px;width:25px;border:0;background-image:radial-gradient(circle at 50% 50%,#e5e8eb 0 5px,#bac3c9 5.5px,#ffffff 6.5px,transparent 7px);background-size:25px 48px;background-repeat:repeat-y;z-index:0}
 .study-page .lab-notebook::after{content:'';position:absolute;left:-5px;top:0;bottom:0;width:9px;background:linear-gradient(135deg,#fff 25%,transparent 25%) 0 0/9px 18px,linear-gradient(45deg,#fff 25%,transparent 25%) 0 9px/9px 18px;pointer-events:none}
 .study-page .lab-notebook .sheet-header{border:0;border-bottom:1px solid #df9ba7;padding-bottom:18px;margin-bottom:28px}.study-page .lab-notebook .sheet-header h2{font-size:clamp(25px,3vw,36px);line-height:1.3}.study-page .lab-notebook .blog-content{min-height:380px;line-height:1.85}
 .study-downloads{justify-content:flex-start;gap:12px;margin-top:26px}
}
@media screen and (max-width:600px){.study-page .lab-notebook{--paper-margin:34px;padding:28px 18px 28px 48px}.study-page .lab-notebook::before{left:5px;width:22px;background-size:22px 42px}.study-page .lab-notebook .sheet-header h2{font-size:24px}.study-downloads{align-items:stretch;flex-direction:column}.study-downloads .pdf-button{text-align:center}}
/* A plain ruled index card, with no decorative content boxes. */
.lab-flashcard{background-color:#fff;background-image:repeating-linear-gradient(transparent 0,transparent 27px,#c3c9cc 27px,#c3c9cc 28px);background-size:auto;border-top:0;color:#33454d}
.lab-flashcard .sheet-header{border-bottom:3px double #b76c78;padding-bottom:18px}.lab-flashcard .sheet-eyebrow{display:none}.lab-flashcard .sheet-header h2{font-size:25px;font-weight:600}.lab-flashcard .flash-content section{background:transparent;border:0;border-radius:0;padding:0}.lab-flashcard .flash-content h3{font-size:10px;letter-spacing:.6px;color:#6c777d}.lab-flashcard .flash-content p,.lab-flashcard .flash-content li{line-height:1.8}.lab-flashcard .sheet-footer{border:0;font-size:9px}.sheet-header>div:first-child{flex:1;min-width:0}
@media screen{.study-page .lab-notebook .lab-stamp{display:flex;width:82px;height:94px}.study-page .lab-notebook .lab-stamp img{width:45px;height:45px}.study-page .lab-notebook .lab-stamp span{font-size:7px}.study-page .lab-notebook .sheet-header{align-items:center}}
@media screen and (max-width:600px){.study-page .lab-notebook .lab-stamp{width:60px;height:78px}.study-page .lab-notebook .lab-stamp img{width:34px;height:34px}.study-page .lab-notebook .lab-stamp span{font-size:5.5px;letter-spacing:.5px}}
@media print{
 body[data-print-view]{background:white!important;display:block!important;color:#263b3c;print-color-adjust:exact;-webkit-print-color-adjust:exact}
 body[data-print-view] .site-nav,body[data-print-view]>.skip-link,body[data-print-view]>.site-footer,body[data-print-view] .notes-toolbar,body[data-print-view] .notes-sidebar,body[data-print-view] .breadcrumbs,body[data-print-view] .study-page>h1,body[data-print-view] .study-switch,body[data-print-view] .study-controls,body[data-print-view] .pdf-help,body[data-print-view] .back-link{display:none!important}
 body[data-print-view] main,body[data-print-view] .notes-shell,body[data-print-view] .notes-layout,body[data-print-view] .notes-page,body[data-print-view] .study-page{display:block!important;width:100%!important;max-width:none!important;margin:0!important;padding:0!important}
 body[data-print-view="blog"] #flash-sheet,body[data-print-view="flash"] #blog-sheet{display:none!important}
 body[data-print-view] .study-sheet{box-shadow:none;margin:0;width:100%;overflow:visible;border-radius:0}
 body[data-print-view="blog"] .lab-notebook{padding:14mm 12mm 12mm 32mm;min-height:297mm;border:0}
 body[data-print-view="blog"] .lab-notebook::before{left:25mm}
 body[data-print-view] .sheet-header{break-after:avoid}body[data-print-view] .sheet-header h2{font-size:24px}body[data-print-view] .blog-content{min-height:120mm}body[data-print-view] .blog-content p,body[data-print-view] .blog-content li{orphans:3;widows:3}body[data-print-view] figure,body[data-print-view] img,body[data-print-view] .flash-content section{break-inside:avoid}
 body[data-print-view] video,body[data-print-view] iframe{display:none!important}
 body[data-print-view="flash"] .lab-flashcard{padding:10mm;min-height:148mm;border:0}body[data-print-view="flash"] .sheet-header{margin-bottom:4mm;padding-bottom:4mm}body[data-print-view="flash"] .lab-stamp{width:65px;height:80px}body[data-print-view="flash"] .lab-stamp img{width:40px;height:40px}body[data-print-view="flash"] .flash-content{grid-template-columns:1fr 1fr;gap:4mm}body[data-print-view="flash"] .flash-content section{padding:0;border:0;background:transparent}body[data-print-view="flash"] .sheet-footer{margin-top:4mm;padding-top:3mm}
}