/* Biology Premium V3. Presentation only; all rules require the Biology runtime class. */
body.brbv3-biology{--brbv3-ink:#171127;--brbv3-purple:#35165c;--brbv3-violet:#6b2fbc;--brbv3-muted:#625772;--brbv3-line:#e9e1f1;--brbv3-soft:#f4effc;background:#f8f8fc;color:var(--brbv3-ink)}
body.brbv3-biology.brsn-biology .wp-site-blocks>main{padding-block:22px 46px!important;margin-block-start:0!important}
body.brbv3-biology.brsn-biology .wp-block-post-content{margin-block-start:0!important}
body.brbv3-biology.brsn-biology .wp-site-blocks main .wp-block-group:has(>.wp-block-post-content){width:100%!important;max-width:none!important;padding:0!important;margin:0!important}
body.brbv3-biology.brsn-biology .brsn-layout{--brsn-grid-max:940px;--brsn-edge:32px;gap:20px;margin-block:0 20px!important;color:var(--brbv3-ink);font-family:Arial,Helvetica,sans-serif}
body.brbv3-biology .brsn-content{padding:24px;background:#fff;border:1px solid #f0edf5;border-radius:18px;box-shadow:0 8px 36px #35165c04}
body.brbv3-biology.brsn-biology .brsn-content .br-bio{background:transparent!important;color:var(--brbv3-ink);font-family:Arial,Helvetica,sans-serif;font-size:17px;line-height:1.75}
body.brbv3-biology .brsn-content .brpub-skip{position:absolute;left:-10000px;top:auto;width:1px;height:1px;overflow:hidden}
body.brbv3-biology .brsn-content .brpub-skip:focus{position:relative;left:auto;display:inline-block;width:auto;height:auto;padding:12px 16px;margin-bottom:12px;background:var(--brbv3-soft);color:var(--brbv3-purple);z-index:2}
body.brbv3-biology .brbv3-intro{margin-bottom:22px}
body.brbv3-biology .brbv3-breadcrumb{display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-start;gap:6px 10px;margin:0 0 14px;padding:0;color:#68577c;font:13px/1.5 Arial,Helvetica,sans-serif}
body.brbv3-biology .brbv3-breadcrumb a{color:#5c3b80;text-decoration:none;min-height:32px;display:inline-flex;align-items:center}
body.brbv3-biology .brbv3-breadcrumb a:hover{text-decoration:underline;text-underline-offset:3px}
body.brbv3-biology .brbv3-breadcrumb a::after{content:"›";margin-left:10px;color:#b5a3c6;font-size:18px;font-weight:400}
body.brbv3-biology .brbv3-breadcrumb [aria-current]{font-size:12px;color:#74677f}
body.brbv3-biology.brsn-biology .brsn-content h1.brbv3-title{margin:0 0 16px!important;color:#110a22!important;-webkit-text-fill-color:#110a22!important;font:800 clamp(32px,3.05vw,48px)/1.13 Arial,Helvetica,sans-serif!important;letter-spacing:-1.25px;overflow-wrap:break-word;text-wrap:balance}
body.brbv3-biology .brbv3-specs{display:flex;flex-wrap:wrap;gap:8px;font:600 12px/1.5 Arial,Helvetica,sans-serif;color:#482078}
body.brbv3-biology .brbv3-specs>span{display:inline-flex;align-items:center;min-height:32px;padding:7px 13px;border-radius:999px;background:#f3eefb}
body.brbv3-biology .brbv3-specs>span:first-child{background:#ece1fe;color:#4a1787}
body.brbv3-biology .brbv3-old-title[hidden]{display:none!important}
body.brbv3-biology.brsn-biology .brsn-content .reading>header.brbv3-topic-banner{position:relative;isolation:isolate;overflow:hidden;min-height:166px;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;margin:0 0 20px;padding:25px 28px!important;border:0;border-radius:16px;background:radial-gradient(ellipse at 86% 12%,#9069cc50 0,transparent 56%),linear-gradient(115deg,#301050 0%,#492079 65%,#67359a 100%)!important;color:#fff!important}
body.brbv3-biology .brbv3-topic-banner::before{content:"";position:absolute;z-index:-1;inset:-65px -35px -65px 62%;border:1px solid #d9c3ff24;border-radius:50%;transform:rotate(-28deg);box-shadow:0 0 0 38px #d9c3ff09,0 0 0 80px #d9c3ff08;pointer-events:none}
body.brbv3-biology .brbv3-topic-banner::after{content:"";position:absolute;z-index:-1;width:220px;height:220px;right:-55px;bottom:-125px;border:1px solid #d9c3ff33;border-radius:50%;box-shadow:0 0 0 28px #d9c3ff0b;pointer-events:none}
body.brbv3-biology.brsn-biology .brsn-content .brbv3-topic-banner p{position:relative;max-width:90%;margin:4px 0;color:#fff!important;-webkit-text-fill-color:#fff!important;font:14px/1.6 Arial,Helvetica,sans-serif}
body.brbv3-biology.brsn-biology .brsn-content .brbv3-topic-banner p:first-of-type{font-size:11px;letter-spacing:1.3px;font-weight:700}
body.brbv3-biology .brbv3-banner-code{position:relative;display:block;margin:5px 0 3px;color:#fff!important;-webkit-text-fill-color:#fff!important;font:750 27px/1.25 Arial,Helvetica,sans-serif}
body.brbv3-biology .brbv3-topic-banner>p{order:3}
body.brbv3-biology .brbv3-topic-banner>p:first-of-type{order:1}
body.brbv3-biology .brbv3-topic-banner>.brbv3-banner-code{order:2}
body.brbv3-biology .brbv3-topic-banner .brbv3-banner-art{position:absolute;z-index:-1;right:-38px;top:0;width:270px;height:100%;object-fit:cover;object-position:center;opacity:.22;mix-blend-mode:screen;pointer-events:none}
body.brbv3-biology .brbv3-topic-banner .brbv3-banner-art:not(.brbv3-bacterium-art){mask-image:radial-gradient(ellipse at center,#000 20%,transparent 72%)}
body.brbv3-biology .brbv3-topic-banner .brbv3-bacterium-art{width:300px;right:-25px;opacity:.55;object-fit:contain;transform:rotate(-15deg)}
body.brbv3-biology.brsn-biology .brsn-content .reading>section{margin:0 0 20px;padding:24px;border:1px solid var(--brbv3-line);border-radius:16px;background:#fff;box-shadow:none}
body.brbv3-biology.brsn-biology .brsn-content .reading>.learning-objectives{position:relative;padding:22px 24px 24px 72px;border:1px solid #ede5fc;background:linear-gradient(130deg,#f5efff,#f2ecfb)!important;color:#4a3b61}
body.brbv3-biology .learning-objectives::before{content:"◎";position:absolute;left:21px;top:21px;display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:#6323b7;color:#fff;font:700 27px/1 Arial,Helvetica,sans-serif;box-shadow:0 0 0 5px #fff5}
body.brbv3-biology.brsn-biology .brsn-content .reading h2{margin:0 0 17px;color:#421272;-webkit-text-fill-color:#421272;font:750 25px/1.3 Arial,Helvetica,sans-serif;letter-spacing:-.5px}
body.brbv3-biology.brsn-biology .brsn-content .reading>section:not(.learning-objectives)>h2:first-child{padding-bottom:15px;border-bottom:1px solid #eee6f5}
body.brbv3-biology.brsn-biology .brsn-content .reading h3{margin:24px 0 10px;color:#421272;-webkit-text-fill-color:#421272;font:750 22px/1.35 Arial,Helvetica,sans-serif;letter-spacing:-.3px}
body.brbv3-biology.brsn-biology .brsn-content .reading h2+h3{margin-top:0}
body.brbv3-biology.brsn-biology .brsn-content .reading p{margin:0 0 15px;color:#272236;line-height:1.78}
body.brbv3-biology.brsn-biology .brsn-content .reading p:last-child{margin-bottom:0}
body.brbv3-biology.brsn-biology .brsn-content .learning-objectives h2{margin-bottom:9px;font-size:23px;letter-spacing:-.45px}
body.brbv3-biology.brsn-biology .brsn-content .learning-objectives p,body.brbv3-biology .learning-objectives li{color:#534368;font-size:15px;line-height:1.7}
body.brbv3-biology .learning-objectives ul{margin:10px 0 0;padding-left:21px}
body.brbv3-biology .learning-objectives li::marker{color:#6824b9}
body.brbv3-biology .reading li{margin-block:6px}
body.brbv3-biology .reading ul,body.brbv3-biology .reading ol{padding-left:23px}
body.brbv3-biology .reading strong{font-weight:700}
body.brbv3-biology .reading a{color:#6427a6;text-underline-offset:3px}
body.brbv3-biology .reading figure{margin:22px 0 8px;padding:12px;border:1px solid #eae2f5;border-radius:13px;background:#fbf9ff}
body.brbv3-biology .reading figure img{max-width:100%;height:auto;display:block;margin-inline:auto}
body.brbv3-biology .reading .diagram-scroll{border-radius:9px;background:#fbf9ff;scrollbar-color:#b59ad3 #f4effb}
body.brbv3-biology .reading figcaption{margin-top:11px;color:#71637e;font:12px/1.6 Arial,Helvetica,sans-serif}
body.brbv3-biology .reading .notice{padding:15px 18px;border-left:4px solid #8c57c8;border-radius:0 9px 9px 0;background:#f5effc;color:#4c3b61}
body.brbv3-biology .reading .table{border:1px solid #e5dcef;border-radius:10px;margin-block:18px}
body.brbv3-biology .reading table{font-size:15px;line-height:1.6}
body.brbv3-biology .reading th{background:#f2ebfa;color:#421d68;font-weight:700}
body.brbv3-biology .reading td,body.brbv3-biology .reading th{padding:12px 14px;border-color:#e8dff0}
body.brbv3-biology.brsn-biology .brsn-content .reading .q{margin:20px 0;padding:22px;border:1px solid #ded1ed;border-radius:13px;background:#fdfbff;box-shadow:none}
body.brbv3-biology .reading legend{margin-bottom:8px;color:#31213e;font:700 17px/1.5 Arial,Helvetica,sans-serif}
body.brbv3-biology .reading label{gap:11px;align-items:flex-start;min-height:48px;padding:12px 14px;margin:9px 0;border:1px solid #e0d6eb;border-radius:9px;background:#fff;font-size:15px;line-height:1.6}
body.brbv3-biology .reading label:hover{border-color:#aa83cf;background:#faf6ff}
body.brbv3-biology .reading input[type=radio]{width:18px;height:18px;margin-top:3px;accent-color:#6b2fbc}
body.brbv3-biology .reading label:has(input:checked){border-color:#8d58bf;background:#f4ecff}
body.brbv3-biology .reading button{min-height:46px;padding:11px 18px;margin:8px 6px 0 0;border:2px solid #5e219b;border-radius:9px;background:#5e219b;color:#fff;font:700 14px/1.4 Arial,Helvetica,sans-serif;box-shadow:none}
body.brbv3-biology .reading button:hover{background:#42166f;border-color:#42166f}
body.brbv3-biology .reading button.retry{border-color:#dacbe9;background:#fff;color:#52267f}
body.brbv3-biology .reading button.retry:hover{border-color:#9d75c1;background:#f4eefb}
body.brbv3-biology .reading .feedback:not(:empty){margin-top:16px;padding:16px;border-radius:10px;border-width:1px;background:#f5effc;font-size:15px;line-height:1.65}
body.brbv3-biology .reading .feedback[data-result=correct]{background:#f0f9f2;border-color:#6ea982}
body.brbv3-biology .reading .feedback[data-result=incorrect]{background:#fff3f4;border-color:#d89aa6}
body.brbv3-biology .reading :focus-visible,body.brbv3-biology .brsn-layout a:focus-visible,body.brbv3-biology .brsn-layout button:focus-visible,body.brbv3-biology .brsn-layout summary:focus-visible{outline:3px solid #7b3cb7;outline-offset:3px}
/* Reuse Science Navigation's accessible disclosure and independent scroll state. */
body.brbv3-biology .brsn-contents{border:1px solid #e9e2f2;border-radius:15px;background:#fff;box-shadow:0 7px 26px #35165c04;font-family:Arial,Helvetica,sans-serif}
body.brbv3-biology .brsn-contents-details>summary{padding:20px 18px;min-height:68px;border-bottom:1px solid #eee7f5;color:#1c1231;font:700 15px/1.5 Arial,Helvetica,sans-serif}
body.brbv3-biology .brsn-toc-scroll{padding:8px 10px 14px;scrollbar-width:thin;scrollbar-color:#b6a1cb #f8f5fc}
body.brbv3-biology .brsn-toc-scroll>a.brsn-hub{padding:10px 8px;color:#6b5282;font-size:12px}
body.brbv3-biology [data-brsn-current]{min-height:38px;margin-bottom:9px;border-color:#eee4f8;background:#fbf8ff;font:600 11px/1.4 Arial,Helvetica,sans-serif}
body.brbv3-biology .brsn-group{margin:0;border-top:1px solid #eee7f6}
body.brbv3-biology .brsn-group>summary{padding:14px 7px;color:#49216d;font:700 13px/1.45 Arial,Helvetica,sans-serif}
body.brbv3-biology .brsn-group a{padding:12px 11px;border-radius:0 7px 7px 0;color:#604675;font:400 13px/1.55 Arial,Helvetica,sans-serif}
body.brbv3-biology .brsn-group a small{color:#73558a;font-size:11px;line-height:1.4}
body.brbv3-biology .brsn-group a[aria-current=page]{border-left-color:#6c2abd;background:linear-gradient(105deg,#ece0fd,#f1e9fc);color:#491c7b;font-weight:700}
body.brbv3-biology .brsn-onpage{padding-top:12px;border-color:#eee7f6}
body.brbv3-biology .brsn-onpage p{font-size:11px;text-transform:uppercase;letter-spacing:.7px;color:#8c759f}
body.brbv3-biology .brsn-onpage a{font-size:12px;padding:10px 8px;color:#6d5681}
body.brbv3-biology .brsn-shop.brx-promo{border:1px solid #e9e2f2;border-radius:15px;background:#fff;box-shadow:0 7px 26px #35165c04;font-family:Arial,Helvetica,sans-serif}
body.brbv3-biology .brsn-shop .brx-promo-copy{padding:22px 20px}
body.brbv3-biology .brsn-shop .brx-promo-kicker{margin-bottom:13px;color:#5d2a91;font:700 10px/1.5 Arial,Helvetica,sans-serif;letter-spacing:.7px}
body.brbv3-biology .brsn-shop h2{margin:0 0 10px;color:#1d1131;font:750 21px/1.3 Arial,Helvetica,sans-serif;letter-spacing:-.45px}
body.brbv3-biology .brsn-shop .brx-promo-copy>p:not(.brx-promo-kicker){margin:0 0 17px;color:#675674;font-size:13px;line-height:1.65}
body.brbv3-biology .brsn-shop .brsn-product{grid-template-columns:62px minmax(0,1fr);gap:12px;padding:16px 0;border-color:#eee6f5}
body.brbv3-biology .brsn-shop .brsn-product img{width:62px;height:82px;border-radius:5px;background:#f1e8fc}
body.brbv3-biology .brsn-shop .brsn-product a{color:#542780;font:600 13px/1.5 Arial,Helvetica,sans-serif}
body.brbv3-biology .brsn-shop .brsn-price{margin-top:7px;color:#2c124b;font:750 17px/1.4 Arial,Helvetica,sans-serif}
body.brbv3-biology .brsn-shop .brx-promo-more{min-height:47px;margin-top:8px;padding:12px;border:0;border-radius:9px;background:linear-gradient(110deg,#6321ac,#542095);color:#fff!important;font:700 12px/1.5 Arial,Helvetica,sans-serif;box-shadow:0 3px 10px #5e239c18}
body.brbv3-biology .brsn-shop .brx-promo-more:hover{background:#42166f}
body.brbv3-biology .brsn-adjacent{margin:24px 0 0;padding:0;border:0;background:transparent;font-family:Arial,Helvetica,sans-serif}
body.brbv3-biology .brsn-adjacent a{padding:15px 16px;border:1px solid #e7dcef;border-radius:11px;background:#fbf8ff;color:#49216f;font-size:14px;line-height:1.55}
body.brbv3-biology .brsn-adjacent a small{margin-bottom:5px;color:#8d6ca7;font-size:11px;font-weight:600}
body.brbv3-biology .brsn-adjacent a span{font-weight:700}
body.brbv3-biology .brsn-adjacent .brsn-hub{background:transparent;font-size:12px;color:#7c5a96}
@media(min-width:1100px){
 body.brbv3-biology.brsn-biology .brsn-layout{--brsn-grid-max:1190px;grid-template-columns:260px minmax(0,1fr);gap:20px;max-width:1190px!important}
 body.brbv3-biology .brsn-contents{top:var(--brsn-header-offset)}
 body.brbv3-biology .brsn-toc-scroll{max-height:calc(100vh - var(--brsn-header-offset) - 94px);max-height:calc(100dvh - var(--brsn-header-offset) - 94px)}
}
@media(min-width:1360px){
 body.brbv3-biology.brsn-biology .brsn-layout{--brsn-grid-max:1512px;grid-template-columns:260px minmax(0,1fr) 260px;gap:20px;max-width:1512px!important}
 body.brbv3-biology .brsn-contents{grid-column:1;grid-row:1;position:sticky;top:var(--brsn-header-offset)}
 body.brbv3-biology .brsn-content{grid-column:2;grid-row:1;max-width:940px}
 body.brbv3-biology .brsn-shop.brx-promo{grid-column:3;grid-row:1;position:sticky;top:var(--brsn-header-offset);max-height:calc(100vh - var(--brsn-header-offset) - 16px);max-height:calc(100dvh - var(--brsn-header-offset) - 16px);overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin}
}
@media(min-width:1600px){body.brbv3-biology.brsn-biology .brsn-layout{grid-template-columns:272px minmax(0,1fr) 272px}}
@media(max-width:1099px){
 body.brbv3-biology.brsn-biology .wp-site-blocks>main{padding-top:16px!important}
 body.brbv3-biology .brsn-contents-details>summary{padding:15px 18px;min-height:52px;border-bottom:0}
 body.brbv3-biology .brsn-contents-details[open]>summary{border-bottom:1px solid #eee7f5}
 body.brbv3-biology .brsn-shop.brx-promo{position:static;max-height:none;overflow:visible}
 body.brbv3-biology .brsn-shop .brx-promo-copy{padding:20px}
 body.brbv3-biology .brsn-shop h2{font-size:20px}
 body.brbv3-biology .brsn-shop .brsn-product{grid-template-columns:48px minmax(0,1fr);padding:11px 0}
 body.brbv3-biology .brsn-shop .brsn-product img{width:48px;height:62px}
 body.brbv3-biology .brsn-shop .brsn-product a{font-size:13px}
 body.brbv3-biology .brsn-shop .brsn-price{font-size:16px}
}
@media(max-width:600px){
 body.brbv3-biology.brsn-biology .brsn-layout{--brsn-edge:20px;gap:14px;margin-block:0 16px!important}
 body.brbv3-biology .brsn-content{padding:18px 14px;border-radius:14px}
 body.brbv3-biology .brbv3-intro{margin-bottom:18px}
 body.brbv3-biology .brbv3-breadcrumb{gap:4px 7px;margin-bottom:12px;font-size:11px}
 body.brbv3-biology .brbv3-breadcrumb a::after{margin-left:7px}
 body.brbv3-biology .brbv3-breadcrumb [aria-current]{font-size:11px;flex-basis:100%;line-height:1.6}
 body.brbv3-biology.brsn-biology .brsn-content h1.brbv3-title{font-size:32px!important;line-height:1.15!important;letter-spacing:-.9px;margin-bottom:14px!important}
 body.brbv3-biology .brbv3-specs{gap:7px;font-size:10px}
 body.brbv3-biology .brbv3-specs>span{padding:6px 10px;min-height:29px}
 body.brbv3-biology.brsn-biology .brsn-content .reading>header.brbv3-topic-banner{min-height:154px;padding:22px 20px!important;border-radius:12px;margin-bottom:16px}
 body.brbv3-biology.brsn-biology .brsn-content .brbv3-topic-banner p{max-width:100%;font-size:12px}
 body.brbv3-biology.brsn-biology .brsn-content .brbv3-topic-banner p:first-of-type{font-size:9px;letter-spacing:.8px}
 body.brbv3-biology .brbv3-banner-code{font-size:23px}
 body.brbv3-biology .brbv3-topic-banner .brbv3-banner-art{right:-80px;width:230px;opacity:.12}
 body.brbv3-biology.brsn-biology .brsn-content .br-bio{font-size:16px;line-height:1.75}
 body.brbv3-biology.brsn-biology .brsn-content .reading>section{padding:20px 16px;border-radius:12px;margin-bottom:16px}
 body.brbv3-biology.brsn-biology .brsn-content .reading>.learning-objectives{padding:20px 16px 20px 59px}
 body.brbv3-biology .learning-objectives::before{left:16px;top:20px;width:29px;height:29px;font-size:23px;box-shadow:0 0 0 4px #fff5}
 body.brbv3-biology.brsn-biology .brsn-content .reading h2{font-size:22px;margin-bottom:15px}
 body.brbv3-biology.brsn-biology .brsn-content .learning-objectives h2{font-size:20px;line-height:1.35}
 body.brbv3-biology.brsn-biology .brsn-content .learning-objectives p,body.brbv3-biology .learning-objectives li{font-size:14px}
 body.brbv3-biology.brsn-biology .brsn-content .reading h3{font-size:20px;line-height:1.4;margin-top:22px}
 body.brbv3-biology.brsn-biology .brsn-content .reading p{line-height:1.75}
 body.brbv3-biology .reading figure{padding:8px;margin-top:18px;border-radius:10px}
 body.brbv3-biology .reading figcaption{font-size:11px}
 body.brbv3-biology.brsn-biology .brsn-content .reading .q{padding:17px 12px;margin:17px 0}
 body.brbv3-biology .reading legend{font-size:16px}
 body.brbv3-biology .reading label{padding:11px 10px;font-size:14px}
 body.brbv3-biology .reading button{padding:11px 13px;font-size:13px}
 body.brbv3-biology .reading .feedback:not(:empty){font-size:14px;padding:13px}
 body.brbv3-biology .reading .notice{padding:13px}
 body.brbv3-biology .brsn-adjacent{gap:10px;margin-top:18px}
 body.brbv3-biology .brsn-adjacent a{padding:13px;font-size:13px}
}
@media print{
 body.brbv3-biology{background:#fff}
 body.brbv3-biology .brsn-content{padding:0;border:0;box-shadow:none}
 body.brbv3-biology .brbv3-breadcrumb,body.brbv3-biology .brbv3-specs{display:none}
 body.brbv3-biology.brsn-biology .brsn-content .reading>header.brbv3-topic-banner{min-height:auto;padding:14px!important;background:#fff!important;border:1px solid #ddd;color:#222!important;break-inside:avoid}
 body.brbv3-biology.brsn-biology .brsn-content .brbv3-topic-banner p,body.brbv3-biology .brbv3-banner-code{color:#222!important;-webkit-text-fill-color:#222!important}
 body.brbv3-biology .brbv3-topic-banner::before,body.brbv3-biology .brbv3-topic-banner::after,body.brbv3-biology .brbv3-banner-art{display:none}
 body.brbv3-biology .reading figure,body.brbv3-biology .reading .q{break-inside:avoid}
}