:root{--ad-paper:#fffdf5;--ad-ink:#22302a;--ad-muted:#4d5b52;--book-pink:#f4dced;--book-pink-edge:#be8fae;--book-pink-ink:#624253;--book-hand:var(--ad-font)}
html{scroll-padding-top:120px}
body.adbook-reader{background:linear-gradient(#351f1638,#351f1638) center top/auto repeat scroll,#664737 url("https://environmentalplatform.com/wp-content/uploads/2026/10/algae-doctor-walnut-desk-20261005.png?resize=960%2C960&quality=75") center top/1400px auto repeat scroll}
.adbook-reader :is(a,button,summary):focus-visible{outline:2px solid #986583;outline-offset:4px}
.adbook-skip{position:fixed;top:-100px;left:12px;z-index:20000;background:#fffdf5;padding:12px}
.adbook-skip:focus{top:12px}
.adbook-header{padding:12px max(24px,calc((100vw - 1200px)/2));min-height:96px;background:#fffef8;border-bottom:0;gap:16px}
.adbook-site-links{display:flex;align-items:center;gap:22px}
.adbook-site-links a{font-size:13px;text-decoration:none;min-height:44px;display:inline-flex;align-items:center}
.adbook-site-links .adbook-pink-tab{background:var(--book-pink);color:var(--book-pink-ink);border:1px solid var(--book-pink-edge);border-top:3px solid var(--book-pink-edge);border-radius:8px 8px 2px 2px;min-width:142px;justify-content:center;font-weight:650}
.adbook-site-links .adbook-pink-tab:is(:hover,:focus-visible){background:var(--book-pink)}
.adbook-toolbar{position:sticky;top:0;z-index:40;background:#fffdf5;border-block:1px solid #d8cfcd;box-shadow:0 2px 5px #3b292412}
.adbook-toolbar-inner{max-width:1200px;margin:auto;min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:8px 12px}
.adbook-bookname{display:flex;align-items:center;gap:18px;text-decoration:none;font-weight:650;font-size:15px;min-width:0}
.adbook-bookname>span{font-size:12px;color:#816277;font-weight:500;white-space:nowrap}
.adbook-controls{display:flex;align-items:center;gap:8px}
.adbook-step,.adbook-toc>summary{display:flex;align-items:center;justify-content:center;gap:12px;min-height:44px;padding:8px 14px;font-size:13px;font-weight:600;text-decoration:none;border:1px solid #cccfc1;border-radius:4px;background:#fffdf5;white-space:nowrap}
.adbook-step.adbook-next{border-color:var(--book-pink-edge);background:var(--book-pink);color:var(--book-pink-ink)}
.adbook-toc{position:relative;margin:0;border:0;background:none;padding:0}
.adbook-toc>summary{cursor:pointer;list-style:none;border-color:var(--book-pink-edge);color:var(--book-pink-ink)}
.adbook-toc>summary::-webkit-details-marker{display:none}
.adbook-toc[open]>summary{background:var(--book-pink)}
.adbook-toc[open]>summary>span{transform:rotate(180deg)}
.adbook-toc-paper{position:absolute;top:calc(100% + 10px);right:0;width:520px;max-width:calc(100vw - 24px);max-height:calc(100dvh - 150px);overflow-y:auto;overscroll-behavior:contain;padding:20px 24px;background:#fffdf5;border:1px solid #bfc5b4;border-top:4px solid var(--book-pink-edge);box-shadow:0 10px 28px #31261d30;border-radius:3px}
.adbook-toc-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}
.adbook-toc-heading>strong{font-size:18px}
.adbook-toc-close{display:grid;place-items:center;width:44px;height:44px;border:0;background:transparent;color:var(--book-pink-ink);font:28px/1 var(--ad-font)}
.adbook-toc-paper>p{margin:0 0 12px;font-size:12px;color:var(--ad-muted)}
.adbook-chapters{display:block;list-style:none;margin:0;padding:0}
.adbook-chapters li{margin:0;padding:0;list-style:none;border-bottom:1px solid #dbe5ea}
.adbook-chapters a{display:grid;grid-template-columns:32px minmax(0,1fr) 50px;gap:12px;align-items:center;min-height:86px;padding:14px 8px;text-decoration:none;color:var(--ad-ink)}
.adbook-number{font:500 18px/1.3 var(--ad-font);color:#a27852;white-space:nowrap}
.adbook-chapters strong{display:block;font-size:15px;font-weight:650;line-height:1.6;word-break:keep-all;overflow-wrap:anywhere}
.adbook-chapters small{display:block;font-size:12px;margin-top:4px;color:var(--ad-muted);line-height:1.7}
.adbook-current{font-size:11px;color:var(--book-pink-ink);white-space:nowrap;text-align:right}
.adbook-arrow{text-align:right;color:#8c7668}
.adbook-chapters a[aria-current=page]{background:var(--book-pink);border-left:3px solid var(--book-pink-edge);padding-left:5px}
.adbook-chapters a:hover{background:#f4dced80}
.adbook-toc-home{display:inline-flex;min-height:44px;align-items:center;font-size:13px;margin-top:12px;color:var(--book-pink-ink)}
.adbook-reader .notebook-page{isolation:isolate;max-width:1200px;width:calc(100% - 32px);padding:32px 32px 48px 80px;margin:32px auto 48px;background:none;border:0;box-shadow:none;border-radius:6px}
.adbook-reader .notebook-page:before{content:"";position:absolute;z-index:-1;inset:0;width:auto;border:1px solid #c6c2ab;border-radius:6px;background:radial-gradient(circle,#bfcbbb80 .8px,transparent 1px) 8px 8px/26px 26px,#fffdf5;mask:radial-gradient(circle at 31px 47px,transparent 6px,#000 6.5px) 0 0/100% 160px repeat-y;pointer-events:none}
.adbook-reader .notebook-page:after{content:"";position:absolute;z-index:-1;top:0;bottom:0;left:56px;width:1px;background:#d36b70;border:0;pointer-events:none}
.adbook-reader .breadcrumbs{gap:8px;margin:4px 0 30px 44px;color:#697568;font-size:12px}
.adbook-reader .breadcrumbs a{min-height:32px;display:inline-flex;align-items:center}
.adbook-reader .breadcrumbs a:first-child{color:var(--book-pink-ink)}
.adbook-reader .star-heading .chapter-eyebrow{color:#816277;font-size:12px;margin-left:44px}
.adbook-reader .star-heading h1.sun-heading,.adbook-reader .adbook-overview h1{white-space:normal;word-break:keep-all;overflow-wrap:anywhere;overflow:visible;font-size:32px;line-height:1.45;letter-spacing:-.035em}
.adbook-reader .star-heading .intro-line{font-size:16px;line-height:1.9;max-width:800px}
.adbook-reader .reading-map{border:0;border-block:1px dashed #c6cbbd;border-radius:0;background:transparent;box-shadow:none;padding:20px 0;margin:28px 0 28px 44px}
.adbook-reader .reading-map h2{font-size:18px;line-height:1.6}
.adbook-reader .reading-map .reading-kicker{font:650 14px/1.6 var(--ad-font);color:#8a5a3c}
.adbook-reader .reading-map p{font-size:14px;line-height:1.9}
.adbook-reader .primer-jumps a{border-color:#d6b8cc;color:var(--book-pink-ink);background:#f4dced66}
.adbook-reader .chapter-eyebrow{color:#816277}
.adbook-page-turn{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin:40px 0 0 44px;padding:24px 0 0;border-top:1px solid #bcc5b5}
.adbook-page-turn>a:not(.adbook-all-chapters){display:block;padding:16px 18px;min-height:110px;border:1px solid #d3d4c4;background:#fffdf5;text-decoration:none;border-radius:3px}
.adbook-page-turn small{display:block;font-size:12px;color:#7e6877;margin-bottom:8px}
.adbook-page-turn strong{display:block;font-size:17px;font-weight:650;line-height:1.7;word-break:keep-all}
.adbook-page-turn .adbook-next-leaf{border-color:var(--book-pink-edge)!important;background:linear-gradient(120deg,#f4dced88,#fffdf5)!important}
.adbook-page-turn .adbook-all-chapters{grid-column:1/-1;justify-self:center;font-size:13px;min-height:44px;display:flex;align-items:center;color:var(--book-pink-ink)}
.adbook-reader .notebook-footer{max-width:1200px;background:#fffdf5;border:1px solid #c6c2ab}
.adbook-reader .notebook-footer a{color:var(--book-pink-ink)}
.adbook-cover-note{display:flex;align-items:center;gap:30px;margin:28px 0 40px 44px;border-block:1px dashed #c6cbbd;padding:24px 0}
.adbook-cover-note img{width:112px;height:112px;object-fit:contain;transform:rotate(-2deg)}
.adbook-cover-note p{font:600 18px/1.6 var(--ad-font);color:#8a5a3c;margin:0 0 10px}
.adbook-cover-note span{display:block;margin-top:10px;font-size:12px;color:var(--ad-muted)}
.adbook-start{display:inline-flex;align-items:center;min-height:44px;padding:6px 16px;background:var(--book-pink);border:1px solid var(--book-pink-edge);border-radius:3px;color:var(--book-pink-ink);text-decoration:none;font-size:14px;font-weight:650}
.adbook-overview #chapters>.adbook-chapters{margin-left:44px}
.adbook-overview #chapters .adbook-chapters a{min-height:100px}
.adbook-pencil{margin:32px 0 0 44px}
.adbook-pencil>strong{font:600 17px/1.6 var(--ad-font);color:#8a5a3c;background:linear-gradient(transparent 65%,#f7e7a1 65% 93%,transparent 93%)}
.adbook-pencil p{font-size:14px;color:var(--ad-muted);line-height:1.9;margin-top:12px}
@media(max-width:767px){
 html{scroll-padding-top:120px}
 .adbook-header{padding:12px 16px;min-height:76px}
 .adbook-header .notebook-brand{padding:7px 9px}
 .adbook-header .notebook-brand strong{font-size:20px}
 .adbook-header .notebook-brand small{font-size:8px;letter-spacing:1px}
 .adbook-header .notebook-brand img{width:25px;height:33px}
 .adbook-site-links{gap:8px}
 .adbook-site-links .adbook-pink-tab{min-width:96px}
 .adbook-shelf-link{display:none!important}
 .adbook-toolbar-inner{display:block;padding:6px 12px 8px}
 .adbook-bookname{font-size:13px;justify-content:space-between;margin:0 2px 5px;min-height:24px}
 .adbook-controls{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px}
 .adbook-controls .adbook-toc{position:static}
 .adbook-step,.adbook-toc>summary{font-size:12px;min-height:42px;padding:7px}
 .adbook-toc-paper{left:12px;right:12px;top:100%;width:auto;max-width:none;max-height:calc(100dvh - 125px);padding:14px 16px}
 .adbook-toc-heading>strong{font-size:16px}
 .adbook-chapters a{grid-template-columns:26px minmax(0,1fr) 40px;gap:8px;padding:12px 4px}
 .adbook-chapters strong{font-size:14px}
 .adbook-chapters small{font-size:11px}
 .adbook-reader .notebook-page{width:calc(100% - 16px);padding:64px 16px 32px;margin:20px auto 28px;--heading-indent:32px;--prose-indent:0px}
 .adbook-reader .notebook-page:before{mask:radial-gradient(circle at 50% 22px,transparent 5px,#000 5.5px) 0 0/25% 100% repeat-x}
 .adbook-reader .notebook-page:after{top:44px;left:0;right:0;width:auto;height:1px;bottom:auto}
 .adbook-reader .breadcrumbs{margin:0 0 24px;font-size:11px;gap:6px}
 .adbook-reader .star-heading .chapter-eyebrow{margin-left:32px;font-size:11px}
 .adbook-reader .star-heading h1.sun-heading,.adbook-reader .adbook-overview h1{font-size:26px;line-height:1.45;padding-left:32px}
 .adbook-reader .star-heading .intro-line{font-size:15px}
 .adbook-reader .reading-map{margin:24px 0;padding:16px 0}
 .adbook-page-turn{margin-left:0;gap:12px}
 .adbook-page-turn>a:not(.adbook-all-chapters){padding:12px;min-height:120px}
 .adbook-page-turn strong{font-size:14px}
 .adbook-page-turn small{font-size:11px}
 .adbook-cover-note{margin-left:0;gap:18px}
 .adbook-cover-note img{width:80px;height:80px}
 .adbook-cover-note p{font-size:17px}
 .adbook-overview #chapters>.adbook-chapters,.adbook-pencil{margin-left:0}
 .adbook-reader .notebook-footer{width:calc(100% - 16px);padding:22px 18px;display:block}
 .adbook-reader .notebook-footer a{display:inline-flex;align-items:center;min-height:44px;margin-top:10px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media print{.adbook-header,.adbook-toolbar,.adbook-page-turn,.adbook-skip{display:none}.adbook-reader .notebook-page{width:100%;margin:0;padding:0}.adbook-reader .notebook-page:before,.adbook-reader .notebook-page:after{display:none}}


.adbook-reader .adedu-note-index{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 32px 44px;padding:0 0 16px;border-bottom:1px solid #dbe5ea}
.adbook-reader .adedu-note-index a{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:8px 14px;border:1px solid #c5cbbb;border-radius:4px;background:#fffdf5;font:600 14px/1.5 var(--ad-font);color:#4d5b52;text-decoration:none}
.adbook-reader .adedu-note-index a[aria-current]{background:#f4dced;border-color:#be8fae;color:#624253}
.adbook-reader .adedu-note-index a:hover{border-color:#be8fae;color:#624253}
.adbook-reader .adbook-pencil>strong{background:none;color:#4d5b52}
.adbook-reader .adbook-cover-note p{color:#4d5b52}
@media(max-width:767px){.adbook-reader .adedu-note-index{margin-left:0}}


.adbook-reader .adedu-note-index{display:flex!important;flex-wrap:nowrap!important;gap:4px!important;margin:22px 0 28px!important;padding:0!important;border:0!important;border-bottom:2px solid #be8fae!important;border-radius:0!important;overflow-x:auto!important;overflow-y:hidden!important;background:none!important}
.adbook-reader .adedu-note-index a{display:flex!important;align-items:center!important;justify-content:center!important;flex:0 0 auto!important;gap:normal!important;min-height:44px!important;padding:8px 16px 6px!important;margin:0!important;border:1px solid #22302a1f!important;border-bottom:0!important;border-radius:8px 8px 0 0!important;background:#f7edf3!important;color:#4d5b52!important;font:700 15px/1.5 var(--ad-font)!important;white-space:nowrap!important;text-decoration:none!important;box-shadow:none!important;transform:translateY(2px)!important}
.adbook-reader .adedu-note-index a[aria-current]{background:#f4dced!important;border-color:#be8fae!important;color:#624253!important}
.adbook-reader .adedu-note-index a:hover{background:#efd9e8!important;border-color:#be8fae!important;color:#624253!important}
@media(max-width:767px){
.adbook-reader .adedu-note-index{margin:22px -16px 28px!important;padding:0 16px!important}
.adbook-reader .adedu-note-index a{padding:8px 14px 6px!important;font-size:14.5px!important}
}