:root{color-scheme:light;--ink:#101010;--line:#d2d2d2;--muted:#606060}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:white;color:var(--ink);font-family:Helvetica,Arial,sans-serif;font-size:16px;line-height:1.5}button,input,select,textarea{font:inherit}button{cursor:pointer}a{color:inherit}a:hover,button:hover{text-decoration:underline}h1,h2,h3,h4,p{margin-top:0}h1,h2,h3{letter-spacing:-.035em;font-weight:500}h1{font-size:clamp(44px,6.8vw,104px);line-height:1.04;max-width:1130px;margin:28px 0 60px}h2{font-size:clamp(30px,4vw,58px);line-height:1.1;margin:10px 0 0}h3{font-size:22px}.top{padding:21px clamp(22px,5vw,75px);border-bottom:1px solid var(--ink);display:flex;justify-content:space-between;align-items:flex-start;gap:24px}.wordmark{font-size:19px;font-weight:700;letter-spacing:-.04em;line-height:1.12;text-decoration:none}.top nav{display:flex;gap:29px;align-items:center;flex-wrap:wrap}.top nav a,.top nav button{font-size:14px}.plain-link{padding:0;border:0;background:none;text-decoration:underline;text-underline-offset:3px}.intro,.read-section,.library,.contribute-section{padding:70px clamp(22px,5vw,75px)}.intro{padding-top:92px}.kicker,.section-number{font-size:12px;letter-spacing:.1em;text-transform:uppercase}.intro-bottom{display:grid;grid-template-columns:2fr 1fr;gap:45px;max-width:1150px}.intro-bottom p{font-size:clamp(19px,2.1vw,28px);line-height:1.4}.intro-links{display:flex;flex-direction:column;gap:13px;align-items:flex-start}.intro-links a,.intro-links button{font-size:17px}.citation{color:var(--muted);border-top:1px solid var(--line);margin:80px 0 0;padding-top:18px;max-width:1100px;font-size:13px}.read-section,.contribute-section{background:#fafafa;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}.section-title{display:flex;justify-content:space-between;align-items:end;gap:25px}.section-title>a{font-size:14px}.section-summary{max-width:850px;color:#414141;font-size:17px;margin:24px 0 34px}.reading-layout{display:grid;grid-template-columns:minmax(210px,290px) 1fr;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}.toc{padding:18px 28px 20px 0;border-right:1px solid var(--line);align-self:start}.toc h3{font-size:15px;font-weight:700;letter-spacing:0}.toc a{display:flex;justify-content:space-between;gap:16px;padding:9px 0;text-decoration:none;border-bottom:1px solid #e5e5e5;font-size:13px}.toc a:hover{text-decoration:underline}.toc a span{color:var(--muted)}.paper-frame{padding:0 0 0 24px;min-width:0}.reader-toolbar{display:flex;justify-content:space-between;gap:10px;padding:12px 0;font-size:12px}.paper-frame iframe{display:block;width:100%;height:800px;max-height:80vh;border:1px solid #bbb;background:#eee}.reader-fallback{font-size:12px;color:var(--muted);margin:10px 0 16px}.search-row{display:flex;gap:12px;margin:30px 0}.search-wrap{border:1px solid var(--ink);display:flex;align-items:center;gap:10px;padding:12px;flex:1}.search-wrap input{border:0;outline:0;min-width:0;width:100%;background:transparent}.search-row select,.results-heading select{background:white;border:1px solid var(--ink);padding:12px;max-width:100%}.filter-row{display:flex;gap:8px;flex-wrap:wrap}.chip{border:1px solid #bdbdbd;padding:8px 13px;background:white;font-size:13px;border-radius:0}.chip.active{background:var(--ink);color:white;border-color:var(--ink)}.results-heading{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--ink);padding:20px 0 12px;margin-top:20px;font-size:13px}.results-heading select{border:0;padding:5px}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}.mechanism-card{background:#fff;border:0;border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:26px 24px 24px 0;text-align:left;display:flex;flex-direction:column;min-height:275px;margin-right:20px}.mechanism-card:nth-child(3n){border-right:0}.mechanism-card h3{margin:25px 0 10px}.mechanism-card p{font-size:14px;color:#444}.card-meta,.card-bottom{display:flex;justify-content:space-between;align-items:start;gap:12px;font-size:11px;color:#555}.card-bottom{margin-top:auto;padding-top:20px;border-top:1px solid #ddd}.tag{font-size:10px;letter-spacing:.08em;text-transform:uppercase;border:1px solid #999;padding:3px 6px;color:#333}.tag.community{border-color:black;color:black}.outline-button{background:none;color:var(--ink);border:1px solid var(--ink);padding:12px 17px}.contribute-grid{display:grid;grid-template-columns:1fr 1fr;gap:55px;margin-top:26px;max-width:1100px;font-size:19px}.black-button,.submit{background:var(--ink);color:#fff;border:1px solid var(--ink);padding:12px 20px}.contribute-grid .black-button{font-size:16px;margin-top:8px}footer{display:flex;justify-content:space-between;gap:30px;padding:35px clamp(22px,5vw,75px);font-size:13px}footer strong{font-size:18px;line-height:1.2;display:block}footer p{color:#555;margin:18px 0 0}footer>div:last-child{display:flex;flex-direction:column;align-items:flex-end;gap:15px}.hidden{display:none!important}.empty{padding:40px 0}.empty button{background:none;border:0;text-decoration:underline}.overlay{position:fixed;inset:0;background:#0009;display:flex;justify-content:center;align-items:center;padding:15px;z-index:10}.dialog{position:relative;max-width:750px;width:100%;max-height:94vh;overflow-y:auto;background:white;padding:35px 40px;border:1px solid black}.close{position:absolute;right:20px;top:9px;font-size:30px;border:0;background:none}.dialog h2{font-size:38px;margin:15px 24px 12px 0}.dialog-intro{color:#444}.notice{padding:14px;border:1px solid #aaa;background:#f7f7f7;font-size:13px;margin:16px 0}.detail-row{display:grid;grid-template-columns:145px 1fr;border-top:1px solid #ddd;gap:14px;padding:14px 0}.detail-row h4{margin:0;font-size:14px}.detail-row p{white-space:pre-wrap;margin:0;font-size:14px}.field{margin:17px 0}.field label{display:block;font-weight:700;font-size:14px;margin-bottom:6px}.field input,.field textarea,.field select{width:100%;border:1px solid #999;border-radius:0;background:white;padding:10px;min-height:42px}.field textarea{min-height:105px;resize:vertical}.dialog-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:24px}.dialog-actions button:not(.submit){background:white;border:1px solid #888;padding:11px 18px}.dialog-actions .btn{padding:12px 20px;background:black;color:white;text-decoration:none}.moderation-item{border-top:1px solid black;padding:20px 0}.moderation-item p{font-size:13px;white-space:pre-wrap}.moderation-item h3{margin:13px 0}#toast{position:fixed;bottom:20px;left:20px;padding:11px 20px;background:black;color:white;opacity:0;transition:opacity .2s;pointer-events:none;z-index:30}#toast.show{opacity:1}@media(max-width:900px){.cards{grid-template-columns:repeat(2,minmax(0,1fr))}.mechanism-card:nth-child(3n){border-right:1px solid var(--line)}.mechanism-card:nth-child(2n){border-right:0}.reading-layout{grid-template-columns:1fr}.toc{border-right:0;border-bottom:1px solid var(--line);padding-right:0}.toc a{display:inline-flex;width:calc(50% - 15px);margin-right:12px}.paper-frame{padding:0}}@media(max-width:600px){.top{flex-direction:column}.top nav{gap:16px}.intro{padding-top:60px}h1{margin-bottom:35px}.intro-bottom,.contribute-grid{grid-template-columns:1fr;gap:15px}.citation{margin-top:40px}.section-title{align-items:start;flex-direction:column}.search-row{flex-direction:column}.cards{grid-template-columns:1fr}.mechanism-card,.mechanism-card:nth-child(3n){border-right:0;margin-right:0;min-height:220px}.toc a{width:100%;margin-right:0}.paper-frame iframe{height:520px}.dialog{padding:27px 20px}.detail-row{grid-template-columns:1fr;gap:5px}footer{flex-direction:column}footer>div:last-child{align-items:flex-start}}

.topic-tags{display:flex;flex-wrap:wrap;gap:5px;margin:12px 0 16px}.topic-tag{font-size:11px;line-height:1.4;padding:3px 7px;border:1px solid #c6c6c6;color:#383838;background:#fff}.tag-hint{font-size:12px;color:#555;margin:-9px 0 16px}.mechanism-card .topic-tags{margin-top:auto}.mechanism-card .card-bottom{margin-top:0}.dialog .topic-tags{margin:16px 0 23px}

/* Text-first, distraction-free reader */
.reader-shell{display:grid;grid-template-columns:220px minmax(0,1fr);border-top:1px solid #111;border-bottom:1px solid #111;min-height:560px}.reader-index{border-right:1px solid #ddd;padding:24px 20px 24px 0}.reader-index h3{font-size:15px;font-weight:700}.reader-index button{display:block;width:100%;text-align:left;background:none;border:0;border-bottom:1px solid #ddd;padding:13px 4px;font-size:14px}.reader-index button.active{font-weight:700;text-decoration:underline}.reader-note{font-size:12px;color:#666;padding-top:20px}.reader-main{min-width:0;padding:0 0 24px 28px}.reader-toolbar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding:14px 0;border-bottom:1px solid #ddd;font-size:13px}.reader-actions{display:flex;gap:18px;align-items:center;flex-wrap:wrap}.reader-actions button{border:0;background:transparent;padding:0;text-decoration:underline}.paper-text{max-width:780px;margin:40px auto 55px;max-height:720px;overflow-y:auto;padding:0 18px 30px;scrollbar-width:thin}.paper-text h2{font-size:clamp(27px,3vw,42px);margin-bottom:30px}.paper-text p{font-size:16px;line-height:1.75;margin-bottom:19px}.pdf-toggle{border-top:1px solid #bbb;margin-top:25px;padding-top:12px;font-size:14px}.pdf-toggle summary{cursor:pointer;text-decoration:underline}.pdf-toggle iframe{width:100%;height:680px;border:1px solid #ddd;margin-top:12px}.mechanism-page{padding:60px clamp(22px,5vw,75px);border-top:1px solid #111;scroll-margin-top:20px}.mechanism-page>h2{max-width:960px;margin:32px 0 25px;font-size:clamp(30px,4.5vw,65px)}.mechanism-heading,.mechanism-actions{display:flex;gap:22px;justify-content:space-between;flex-wrap:wrap;font-size:13px}.mechanism-heading span{color:#555}.mechanism-actions{justify-content:flex-start;border-bottom:1px solid #111;padding:25px 0}.mechanism-actions button{background:none;border:0;padding:0;text-decoration:underline}.mechanism-field{border-bottom:1px solid #ccc;padding:28px 0;display:grid;grid-template-columns:210px 1fr;gap:35px}.mechanism-field h3{font-size:16px;font-weight:700}.mechanism-field-content{white-space:pre-line;line-height:1.75;max-width:820px}.mechanism-field-content p{margin:0 0 15px}.mechanism-columns{display:grid;grid-template-columns:1fr 1fr;gap:32px}.mechanism-columns .mechanism-field{display:block}.mechanism-columns .mechanism-field h3{margin-bottom:20px}.source-note{font-size:12px;color:#555;margin-top:26px}@media(max-width:780px){.reader-shell{grid-template-columns:1fr}.reader-index{border-right:0;border-bottom:1px solid #ddd;padding:20px 0}.reader-main{padding:0}.paper-text{max-height:580px;padding:0 8px}.mechanism-columns{grid-template-columns:1fr;gap:0}.mechanism-field{grid-template-columns:1fr;gap:8px}}

/* Publication-style tables, shared by original and community mechanisms */
.paper-table{border-top:2px solid #151515;border-bottom:1px solid #151515;margin:28px 0 6px;max-width:1120px;font-size:15px;line-height:1.65}
.paper-table h3{font-size:15px;line-height:1.4;font-weight:700;letter-spacing:0;margin:0 0 12px}
.paper-table p{margin:0 0 12px}.paper-table p:last-child{margin-bottom:0}
.paper-table-description{padding:20px 0 30px;border-bottom:1px solid #222}
.paper-table-description>div{max-width:1000px}
.paper-table-pair{display:grid;grid-template-columns:1fr 1fr;gap:40px;border-bottom:1px solid #222;padding:22px 0 28px}
.paper-table ul{padding-left:19px;margin:0}.paper-table li{padding-left:2px;margin:0 0 10px}
.paper-table-footer{display:grid;grid-template-columns:160px 1fr;gap:24px;padding:20px 0;border-bottom:1px solid #222}
.paper-table-footer:last-child{border-bottom:0}
.proposal-preview{border-top:1px solid #111;margin-top:28px;padding-top:14px}.preview-heading{font-size:11px;letter-spacing:.08em;margin-bottom:15px}
.proposal-preview>div>.paper-table{font-size:13px}.proposal-preview h3{font-size:17px}
.proposal-preview .paper-table h3{font-size:13px}
@media(max-width:680px){.paper-table-pair{grid-template-columns:1fr;gap:24px}.paper-table-footer{grid-template-columns:1fr;gap:7px}}

/* Reader spacing refinement: align article to content edge and use available width */
.reader-shell{grid-template-columns:210px minmax(0,1fr)}
.reader-main{padding-left:24px}
.paper-text{width:100%;max-width:1080px;margin:24px 0 38px;padding:0 16px 24px 0;max-height:760px}
.paper-text h2{margin-bottom:22px}
.paper-text p{line-height:1.65;margin-bottom:16px}
@media(max-width:780px){.reader-shell{grid-template-columns:1fr}.reader-main{padding-left:0}.paper-text{max-width:none;padding:0 4px 24px;margin:22px 0}}

/* v7: editorial layout, typography and a structured glossary */
.publication-credit{display:grid;grid-template-columns:150px 1fr;column-gap:28px;row-gap:4px;border-top:1px solid var(--line);padding:20px 0 24px;margin-top:6px;max-width:1250px}
.publication-label{grid-row:1/4;font-size:11px;font-weight:700;letter-spacing:.1em;color:#555}
.publication-credit p{font-size:14px;line-height:1.55;margin:0;max-width:890px}
.publication-institutions,.publication-note{font-size:12px!important;color:#555}
.glossary-intro{max-width:900px}
.glossary-list{margin:30px 0 0;padding:0;max-width:1100px}
.glossary-entry{display:grid;grid-template-columns:minmax(180px,30%) 1fr;gap:25px;padding:17px 0;border-top:1px solid #ddd;line-height:1.6}
.glossary-entry dt{font-weight:700;font-size:15px}.glossary-entry dd{margin:0;font-size:15px}
.paper-text{max-height:none;overflow:visible;max-width:1180px}
/* Use the available page for mechanism tables rather than a narrow second column. */
.mechanism-page .paper-table{max-width:none;width:100%}
.mechanism-page .paper-table-description>div{max-width:none}
.mechanism-page>h2{max-width:1200px;font-size:clamp(32px,4vw,58px);line-height:1.12;margin:25px 0 15px}
.mechanism-page .mechanism-actions{padding:18px 0 22px}
.mechanism-page .paper-table{margin-top:20px}
.mechanism-page .paper-table-pair{gap:48px}
.mechanism-page .paper-table-description{padding-bottom:24px}
/* Reduce the amount of text competing for attention in the index. */
.library .cards{grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid #ddd}
.library .mechanism-card{margin-right:0;padding:23px 24px 22px;min-height:185px;border-right:0;border-bottom:1px solid #ddd}
.library .mechanism-card:nth-child(odd){border-right:1px solid #ddd}
.library .mechanism-card h3{font-size:21px;line-height:1.25;margin:18px 0 12px;letter-spacing:-.025em}
.library .mechanism-card>p{display:none}
.library .mechanism-card .topic-tags{margin:3px 0 12px}
.library .mechanism-card .card-bottom{border-top:0;padding-top:4px}
.library .filter-row{max-height:102px;overflow:auto;align-content:start}
.library .chip{font-size:12px;padding:6px 10px}
@media(max-width:760px){.publication-credit{grid-template-columns:1fr;gap:7px}.publication-label{grid-row:auto}.glossary-entry{grid-template-columns:1fr;gap:4px}.library .cards{grid-template-columns:1fr}.library .mechanism-card:nth-child(odd){border-right:0}.mechanism-page .paper-table-pair{gap:20px}}


/* v8: readable credits, controlled reading height, evenly balanced mechanism columns */
.publication-label{letter-spacing:.08em}
.publication-credit sup{font-size:.72em;vertical-align:super;line-height:0}
.publication-institutions{display:flex;gap:6px 24px;flex-wrap:wrap}
.reader-shell{height:clamp(520px,67vh,760px);min-height:0;overflow:hidden}
.reader-index{overflow-y:auto;min-height:0}
.reader-main{display:flex;flex-direction:column;min-height:0;padding-bottom:0}
.reader-toolbar{flex:0 0 auto}
.paper-text{flex:1 1 auto;min-height:0;max-height:none;overflow-y:auto;overscroll-behavior:contain;margin:0;padding:26px 24px 30px 0;width:100%;max-width:none;scrollbar-width:thin}
.pdf-toggle{flex:0 0 auto;margin:0;padding:10px 0;background:#fafafa}
.pdf-toggle[open]{position:relative;z-index:1}
.pdf-toggle[open] iframe{height:300px}
.paper-table-pair{grid-template-columns:repeat(2,minmax(0,1fr));gap:0;align-items:stretch}
.paper-table-pair>section{min-width:0;padding:2px 28px 0}
.paper-table-pair>section:first-child{border-right:1px solid #d1d1d1;padding-left:0}
.paper-table-pair>section:last-child{padding-right:0}
.paper-table-pair h3{margin-bottom:14px}
.paper-table-pair li{line-height:1.6}
@media(max-width:780px){.reader-shell{height:650px;grid-template-columns:1fr;display:flex;flex-direction:column}.reader-index{display:flex;gap:8px;align-items:center;overflow:auto;flex:none;padding:8px 0;border-right:0;border-bottom:1px solid #ddd}.reader-index h3,.reader-note{display:none}.reader-index button{white-space:nowrap;width:auto;padding:8px}.reader-main{flex:1;padding-left:0}.paper-text{padding:20px 8px 25px}.paper-table-pair{grid-template-columns:1fr}.paper-table-pair>section{padding:0 0 20px!important;border-right:0!important}.paper-table-pair>section+section{border-top:1px solid #ddd;padding-top:22px!important}}

/* v9: browse mechanism tables in a contained, dismissible reading panel */
body.mechanism-open{overflow:hidden}
.mechanism-overlay{position:fixed;inset:0;z-index:40;background:rgba(0,0,0,.49);display:flex;align-items:center;justify-content:center;padding:clamp(10px,3vw,36px)}
.mechanism-overlay.hidden{display:none}
.mechanism-dialog{background:#fff;color:#111;width:min(1140px,100%);height:min(90vh,970px);overflow-y:auto;overscroll-behavior:contain;padding:0 clamp(22px,4vw,52px) 35px;box-shadow:0 20px 65px rgba(0,0,0,.16);scrollbar-width:thin}
.mechanism-dialog-header{position:sticky;top:0;z-index:2;background:#fff;border-bottom:1px solid #bbb;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:17px 0;font-size:11px;letter-spacing:.09em}
.mechanism-dialog-header button{background:none;border:0;font-size:14px;letter-spacing:0;text-decoration:underline;padding:5px;white-space:nowrap}
.mechanism-dialog .mechanism-heading{margin-top:28px;justify-content:flex-start;font-size:12px}
.mechanism-dialog #mechanism-dialog-title{font-size:clamp(31px,3.5vw,49px);line-height:1.14;margin:14px 0 16px;font-weight:500;max-width:900px}
.mechanism-dialog .mechanism-actions{display:flex;justify-content:flex-start;border-bottom:1px solid #111;padding:12px 0 22px;margin-bottom:22px;gap:25px}
.mechanism-dialog .mechanism-actions button{padding:0;background:transparent;border:0;text-decoration:underline}
.mechanism-dialog .paper-table{max-width:none;width:100%;font-size:14px;line-height:1.6;margin-top:0}
.mechanism-dialog .paper-table-description>div{max-width:none}
.mechanism-dialog .paper-table-pair{gap:0}
.mechanism-dialog .paper-table-pair>section:first-child{padding-right:26px}
.mechanism-dialog .paper-table-pair>section:last-child{padding-left:26px}
.mechanism-dialog .paper-table-footer{grid-template-columns:140px 1fr}
@media(max-width:680px){.mechanism-overlay{padding:0}.mechanism-dialog{width:100%;height:100dvh;padding:0 18px 30px}.mechanism-dialog .paper-table-pair>section{padding:0 0 20px!important}.mechanism-dialog .paper-table-pair>section:last-child{padding-top:20px!important}.mechanism-dialog .paper-table-footer{grid-template-columns:1fr;gap:4px}}
/* Keep the tag suggestion dialog above an open mechanism. */
#overlay:not(.hidden){z-index:60}


/* v10: editorial opening, denser reference glossary */
.intro{padding-top:clamp(56px,7vw,92px);padding-bottom:52px}
.intro h1{font-size:clamp(55px,7.25vw,112px);max-width:1050px;line-height:1.015;letter-spacing:-.058em;margin:25px 0 40px}
.intro-bottom{max-width:1080px;grid-template-columns:minmax(0,1.65fr) minmax(205px,.7fr);gap:clamp(32px,6vw,100px);align-items:start}
.intro-bottom p{font-size:clamp(21px,2.15vw,30px);line-height:1.35;letter-spacing:-.021em;max-width:720px;margin-bottom:0}
.intro-links{gap:12px;padding-top:5px}
.intro-links a,.intro-links button{font-size:16px;text-decoration-thickness:1px;text-underline-offset:4px}
.intro .citation{margin-top:65px;max-width:100%;font-size:12px}
.library .section-summary{max-width:820px;font-size:clamp(17px,1.6vw,21px);line-height:1.5;color:#393939;margin:22px 0 35px}
.glossary-list{max-width:none;margin:22px 0 0}
.glossary-entry{grid-template-columns:minmax(190px,25%) minmax(0,1fr);column-gap:clamp(18px,3vw,42px);padding:11px 0;line-height:1.46;align-items:start}
.glossary-entry dt,.glossary-entry dd{font-size:15px;line-height:1.48}
.glossary-entry dt{font-weight:700}
.glossary-intro{max-width:830px;margin-bottom:20px}
@media(max-width:760px){.intro h1{font-size:clamp(48px,11vw,78px)}.intro-bottom{grid-template-columns:1fr;gap:24px}.intro .citation{margin-top:42px}.glossary-entry{grid-template-columns:1fr;gap:3px;padding:12px 0}}

/* v11: longer research-led homepage headline, restrained editorial scale */
.intro h1{font-size:clamp(48px,6vw,92px);line-height:1.065;letter-spacing:-.052em;max-width:1320px;margin:26px 0 38px;text-wrap:balance}
@media(max-width:760px){.intro h1{font-size:clamp(43px,9vw,68px);line-height:1.07}}

/* Shared publication-table presentation for moderation review. */
.moderation-mechanism{padding:24px 0 30px;border-top:1px solid #222}
.moderation-mechanism-title{font-size:clamp(22px,3vw,30px);line-height:1.25;margin:12px 0 14px}
.moderation-mechanism .paper-table{max-width:none;width:100%;margin:22px 0}
.moderation-mechanism .paper-table-pair{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
.moderation-decisions{margin-top:24px}
@media(max-width:680px){.moderation-mechanism .paper-table-pair{grid-template-columns:1fr}}

/* Inline, persistent form errors and focus guidance. */
.submission-feedback{border:1px solid #9b2929;background:#fff9f8;color:#7a1b1b;padding:12px 14px;margin:14px 0;line-height:1.5}
.submission-feedback[hidden]{display:none}
#proposal-form [aria-invalid="true"]{border-color:#9b2929;outline:2px solid #9b2929;outline-offset:1px}
#proposal-form button[type="submit"]:disabled{opacity:.6;cursor:progress}

.glossary-community-label{display:block;margin-top:5px;font-size:11px;color:#666;font-weight:400;letter-spacing:.02em}
.glossary-revise{display:block;border:0;background:none;padding:8px 0 0;font-size:12px;text-decoration:underline;cursor:pointer}
#glossary-add-term{margin:8px 0 20px}

/* Filter hints sit below the full set of wrapping topic buttons. */
.library .filter-row{display:flex;flex-wrap:wrap;gap:8px;max-height:none;overflow:visible;align-content:normal}
.library .filter-row .chip{flex:0 0 auto;white-space:normal;text-align:left}
.library .filter-row + .tag-hint{display:block;clear:both;margin:12px 0 24px;line-height:1.55;max-width:760px}
.community-glossary{border-top:1px solid #222;margin-top:32px;padding-top:24px}
.community-glossary h3{font-size:20px;margin:0 0 10px}
.community-glossary>p{font-size:14px;color:#555;margin:0 0 16px}
.community-glossary .glossary-list{margin-top:0}

/* Footer navigation follows the site's understated arrow-link style. */
.back-to-top{display:inline-flex;align-items:center;gap:12px;border-bottom:1px solid currentColor;padding-bottom:5px;text-decoration:none;font-size:14px}
.back-to-top span{font-size:21px;line-height:1;transition:transform .2s ease}
.back-to-top:hover span,.back-to-top:focus-visible span{transform:translateY(-4px)}
html{scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.back-to-top span{transition:none}}

/* Executive-summary structure follows the section breaks in the paper. */
.paper-text .executive-subheading{font-size:17px;line-height:1.5;font-weight:700;letter-spacing:0;margin:28px 0 12px;max-width:950px}
.paper-text .executive-subheading strong{font-weight:700}
.paper-text .executive-subheading + p{margin-top:0}

/* Compact mechanism explorer: filters stay above independently scrolling results. */
.library .topic-filter-toolbar{display:flex;justify-content:space-between;align-items:center;gap:18px;margin:18px 0 12px;flex-wrap:wrap}
.library .topic-filter-label{font-size:13px;font-weight:700}
.library .clear-topic-filters{border:0;border-bottom:1px solid currentColor;background:transparent;padding:4px 0;font-size:13px;cursor:pointer}
.library .clear-topic-filters:disabled{opacity:.38;cursor:default}
.library .mechanism-results-scroll{max-height:min(65vh,680px);min-height:240px;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;border-bottom:1px solid #222;scroll-padding-top:12px}
.library .mechanism-results-scroll:focus-visible{outline:2px solid #333;outline-offset:3px}
.library .mechanism-results-scroll .cards{border-top:0}
.library .results-heading{margin-top:18px}
@media(max-width:680px){.library .mechanism-results-scroll{max-height:540px;min-height:200px}}