/* Collection and reading navigation. This stylesheet is used only in /articles/. */
html:has(body.articles-area){scroll-behavior:auto}
.articles-area .shell{max-width:1520px}
.articles-area .skip{z-index:100}
.articles-area .primary-nav a[aria-current="location"]{color:var(--green);border-bottom-color:var(--green)}
.articles-layout{display:grid;grid-template-columns:238px minmax(0,1fr);gap:48px;align-items:start;padding:46px 0 65px}
.articles-sidebar{position:sticky;top:132px;max-height:calc(100vh - 154px);overflow-y:auto;scrollbar-width:thin;padding:5px 24px 20px 0;border-right:1px solid var(--line)}
.sidebar-heading{font-size:12px;font-weight:650;color:var(--ink);margin-bottom:20px}
.catalog-nav{font-size:13px;line-height:1.55}
.catalog-nav a{text-decoration:none;display:flex;align-items:baseline;gap:10px;padding:9px 10px;border-radius:3px}
.catalog-nav a:hover{background:var(--wash);color:var(--green)}
.catalog-nav a[aria-current="page"]{background:#e4ecdf;color:var(--green);font-weight:650}
.nav-all,.nav-topics a{justify-content:space-between}
.nav-count{font-family:var(--mono);font-size:10px;color:var(--muted);font-weight:400}
.nav-label{font-family:var(--mono);font-size:10px;text-transform:uppercase;letter-spacing:1.3px;color:var(--muted);margin:25px 10px 9px}
.nav-topics,.nav-parts{list-style:none;margin:0;padding:0}
.nav-series{margin-top:5px}
.nav-series summary{padding:9px 10px;cursor:pointer;font-weight:600;color:var(--ink);font-size:13px}
.nav-series summary::marker{color:var(--green)}
.catalog-nav .series-overview-link{font-size:11px;color:var(--green);padding:7px 10px 10px 23px;justify-content:space-between}
.nav-parts{border-left:1px solid var(--line);margin:4px 0 4px 10px;padding-left:7px}
.nav-parts a,.planned-part{display:grid;grid-template-columns:19px minmax(0,1fr);gap:8px;align-items:baseline;font-size:12px;line-height:1.5;padding:9px 8px}
.part-number{font-family:var(--mono);font-size:10px;color:var(--green)}
.nav-planned{color:var(--muted)}
.nav-planned .part-number{color:var(--muted)}
.planned-part small{display:block;font-family:var(--mono);font-size:9px;letter-spacing:.3px;line-height:1.6;margin-top:3px;color:var(--muted)}
.mobile-browse{display:none}
.collection-page,.articles-area .article-page{min-width:0}
#reading-pane{scroll-margin-top:135px}
#reading-pane:focus{outline:none}
.collection-header{padding:8px 0 43px;max-width:820px}
.collection-header h1{font-size:clamp(40px,4.2vw,59px);line-height:1.12;letter-spacing:-2.2px;font-weight:550;margin:19px 0 23px}
.collection-header h1>span{color:var(--green)}
.collection-header>p:last-of-type{font-size:19px;line-height:1.75;max-width:650px;color:var(--muted)}
.collection-section{margin:0 0 47px}
.collection-section-heading{display:flex;justify-content:space-between;align-items:baseline;gap:25px;margin-bottom:20px}
.collection-section-heading h2{font-size:23px;font-weight:550;line-height:1.35;letter-spacing:-.6px}
.collection-section-heading>p{font-size:12px;line-height:1.7;color:var(--muted)}
.series-feature{display:grid;grid-template-columns:1.35fr 1fr;border:1px solid #cedbc8;background:var(--wash)}
.series-feature-main{padding:30px 31px 32px}
.series-feature-main .eyebrow{font-size:9px;letter-spacing:1px}
.series-feature h3{font-size:31px;font-weight:550;line-height:1.25;letter-spacing:-.9px;margin:17px 0 12px}
.series-feature h3 a,.series-feature h4 a{text-decoration:none}
.series-feature h3 a:hover,.series-feature h4 a:hover{color:var(--green);text-decoration:underline;text-underline-offset:5px}
.series-feature-main>p:not(.eyebrow){font-size:14px;line-height:1.8;max-width:430px;color:var(--muted)}
.card-read{display:inline-flex;align-items:center;gap:18px;font-size:12px;font-weight:650;color:var(--green);text-decoration:none;border-bottom:1px solid #a8bdab;padding:5px 0 7px;margin-top:21px;line-height:1.5}
.card-read:hover{border-color:var(--green)}
.series-feature-start{padding:32px 28px;border-left:1px solid #cedbc8;background:#f0f4eb;display:flex;flex-direction:column;align-items:flex-start;justify-content:center}
.series-feature-start .eyebrow{font-size:9px;letter-spacing:1px}
.series-feature h4{font-size:21px;line-height:1.45;font-weight:550;letter-spacing:-.35px;margin:15px 0 10px}
.series-feature-start>p:not(.eyebrow){font-size:11px;color:var(--muted);line-height:1.7}
.series-feature-start .text-link{font-size:12px;margin-top:21px}
.topic-filters{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 21px}
.topic-filters a{font-size:11px;line-height:1.7;text-decoration:none;border:1px solid #cfdacb;border-radius:3px;padding:7px 13px;color:var(--green)}
.topic-filters a:hover{background:var(--wash)}
.topic-filters a[aria-current="page"]{background:var(--green);border-color:var(--green);color:#fff}
.article-list{border-top:1px solid var(--line)}
.article-list-card{position:relative;border-bottom:1px solid var(--line);padding:29px 0 32px}
.article-list-card .eyebrow{font-size:10px;letter-spacing:.9px;text-transform:uppercase}
.article-list-card h3{font-size:25px;line-height:1.4;letter-spacing:-.55px;font-weight:550;max-width:750px;margin:12px 0 13px}
.article-list-card h3 a{text-decoration:none}
.article-list-card h3 a:hover{color:var(--green);text-decoration:underline;text-underline-offset:5px}
.card-summary{font-size:15px;line-height:1.85;color:var(--muted);max-width:760px}
.card-meta{display:flex;flex-wrap:wrap;gap:6px 22px;font-size:11px;line-height:1.7;color:var(--muted);margin-top:17px}
.article-list-card .card-read{margin-top:16px}
.collection-breadcrumb{font-size:11px;line-height:1.8;color:var(--muted);margin:4px 0 26px}
.collection-breadcrumb ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:4px 11px}
.collection-breadcrumb li+li::before{content:"/";color:#859489;margin-right:11px}
.collection-breadcrumb a{text-decoration:none}
.collection-breadcrumb a:hover{text-decoration:underline;text-underline-offset:3px;color:var(--green)}
.series-meta{display:flex;flex-wrap:wrap;gap:7px 24px;font-size:11px;color:var(--muted);line-height:1.7;margin-top:24px}
.series-header{padding-bottom:27px}
.series-note{max-width:700px;padding:15px 19px;background:var(--wash);border-left:3px solid #7a9477;font-size:12px;line-height:1.8;color:var(--muted);margin-bottom:27px}
.series-outline{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.series-part{display:grid;grid-template-columns:48px minmax(0,1fr);gap:24px;border-bottom:1px solid var(--line);padding:28px 0 30px}
.series-part-number{font-family:var(--mono);font-size:18px;color:#6d806b;line-height:1.5;padding-top:4px}
.series-part h2{font-size:23px;line-height:1.4;font-weight:550;letter-spacing:-.4px;margin:10px 0}
.series-part h2 a{text-decoration:none}
.series-part h2 a:hover{color:var(--green);text-decoration:underline;text-underline-offset:4px}
.series-part p{font-size:14px;line-height:1.85;color:var(--muted);max-width:640px}
.part-status{font-family:var(--mono);font-size:9px;letter-spacing:.4px;line-height:1.7;color:var(--muted)}
.part-status.available{color:var(--green);background:#e7efdf;padding:4px 7px;border-radius:2px}
.series-part .card-read{margin-top:13px}
.articles-area .article-page{padding-bottom:0}
.articles-area .article-header{padding-top:0;max-width:none}
.articles-area .article-header h1{font-size:clamp(38px,3.8vw,56px);letter-spacing:-2px}
.articles-area .article-header .collection-breadcrumb{margin:3px 0 27px}
.articles-area .article-header .collection-breadcrumb li{padding:0;margin:0}
.articles-area .article-toc{max-width:780px}
.series-pagination{max-width:780px;margin:45px auto 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:23px 0;display:grid;grid-template-columns:1fr 1fr;gap:22px;font-size:14px;line-height:1.7}
.series-pagination a{text-decoration:none;color:var(--green);font-weight:550}
.series-pagination a:hover{text-decoration:underline;text-underline-offset:4px}
.series-back{grid-column:1/-1;font-size:12px}
.adjacent-label{display:block;font-size:10px;font-family:var(--mono);letter-spacing:.3px;font-weight:400;color:var(--muted);margin-bottom:6px}
.adjacent-planned{color:var(--muted);grid-column:2;grid-row:2}
.articles-area .article-next{border-top:0;margin-top:0;padding-top:26px}
@media(min-width:1101px){.articles-area .article-content>p,.articles-area .article-content>h2,.articles-area .article-content>h3,.articles-area .article-content>ol,.articles-area .article-content>ul,.articles-area .article-toc,.articles-area .article-next,.articles-area .series-pagination{margin-left:0}}
@media(max-width:1250px) and (min-width:1101px){.articles-layout{grid-template-columns:220px minmax(0,1fr);gap:34px}.articles-sidebar{padding-right:18px}.series-feature{grid-template-columns:1fr}.series-feature-start{border-left:0;border-top:1px solid #cedbc8;padding:23px 29px}.series-feature-start h4{max-width:500px}}
@media(max-width:1100px){
 .articles-area .shell{max-width:1160px}.articles-layout{grid-template-columns:minmax(0,1fr);gap:30px;padding-top:24px}.articles-sidebar{display:none}.mobile-browse{display:block;border:1px solid var(--line);background:#eef2e9;border-radius:3px}
 .mobile-browse>summary{cursor:pointer;padding:14px 18px;font-size:13px;font-weight:600;line-height:1.7;min-height:48px}.mobile-browse>summary::marker{color:var(--green)}.mobile-browse[open]>summary{border-bottom:1px solid var(--line)}
 .mobile-browse .catalog-nav{padding:15px 13px 20px;max-width:550px}.mobile-browse .catalog-nav a{min-height:42px}.mobile-browse .nav-parts a{min-height:44px}.mobile-browse .nav-series summary{min-height:44px;padding-top:12px}.mobile-browse .planned-part{padding-top:10px;padding-bottom:10px}
 .collection-header{padding-top:5px}.articles-area .article-header{padding-top:0}.articles-area .article-header h1{font-size:clamp(38px,5.2vw,55px)}.articles-area .article-header .collection-breadcrumb{margin-top:0}
}
@media(max-width:700px){.series-feature{grid-template-columns:1fr}.series-feature-start{border-left:0;border-top:1px solid #cedbc8;display:block;padding:24px}.series-feature-main{padding:26px 24px 28px}.series-feature-start h4{max-width:420px}.collection-section-heading{display:block}.collection-section-heading>p{margin-top:7px}.series-feature-start .text-link{margin-top:16px}}
@media(max-width:600px){
 .articles-layout{padding:20px 0 39px;gap:28px}.collection-header{padding-bottom:33px}.collection-header h1{font-size:39px;letter-spacing:-1.6px;margin:15px 0 19px}.collection-header>p:last-of-type{font-size:17px;line-height:1.8}
 .collection-section{margin-bottom:36px}.collection-section-heading h2{font-size:22px}.collection-section-heading>p{font-size:11px}.series-feature h3{font-size:29px}.series-feature-main .eyebrow{font-size:8px;line-height:1.8}.series-feature h4{font-size:20px}.series-feature-main>p:not(.eyebrow){font-size:14px}.card-read{min-height:38px}
 .article-list-card{padding:25px 0 27px}.article-list-card h3{font-size:23px;letter-spacing:-.4px}.article-list-card .eyebrow{font-size:9px}.card-summary{font-size:14px}.topic-filters{gap:8px}.topic-filters a{font-size:10px;padding:8px 11px}.card-meta{font-size:10px;gap:6px 15px}
 .collection-breadcrumb{font-size:10px;margin:0 0 24px}.series-meta{font-size:10px;gap:5px 16px;margin-top:19px}.series-note{font-size:11px;padding:13px 15px}.series-part{grid-template-columns:28px minmax(0,1fr);gap:14px;padding:25px 0}.series-part-number{font-size:15px}.series-part h2{font-size:21px}.series-part p{font-size:13px}.series-header{padding-bottom:24px}
 .articles-area .article-header h1{font-size:37px;letter-spacing:-1.4px}.articles-area .article-header .collection-breadcrumb{margin-bottom:22px}.series-pagination{font-size:13px;gap:20px 18px;margin-top:35px}.adjacent-label{font-size:9px}.series-back{font-size:11px}
}
@media print{.articles-area .shell{max-width:none}.articles-layout{display:block;padding-top:20px}.articles-sidebar,.mobile-browse,.topic-filters,.series-pagination{display:none}.collection-header h1{font-size:32px}.articles-area .article-header h1{font-size:34px}.series-part,.article-list-card,.series-feature{break-inside:avoid}}