/* Research Studio. Strictly scoped to research content and product reading links. */
.amp-library{--rl-ink:#122b42;--rl-blue:#215fe5;--rl-muted:#52677c;--rl-border:#dce5ec;--rl-bg:#f5f8fb;color:var(--rl-ink);padding:30px 24px 72px;max-width:1280px;margin:auto;font-family:inherit;line-height:1.55}
.amp-library *{box-sizing:border-box}.amp-library [hidden]{display:none!important}.amp-library svg,.amp-resource-strip svg{width:20px;height:20px;flex-shrink:0;vertical-align:middle}.amp-library a{color:var(--rl-blue);text-underline-offset:4px}.amp-library a:hover{text-decoration:underline}.amp-library :is(a,button,input,select,summary):focus-visible{outline:3px solid #3880f5;outline-offset:4px}.amp-library button,.amp-library input,.amp-library select{font:inherit}.amp-library button{cursor:pointer}.amp-library button:disabled{opacity:.45;cursor:default}.amp-library .rl-eyebrow{font-size:10px;line-height:1.5;letter-spacing:.16em;font-weight:750;text-transform:uppercase;color:#386482;margin:0 0 13px}.amp-library .rl-breadcrumb{display:flex;flex-wrap:wrap;gap:10px;font-size:12px;color:var(--rl-muted);margin:0 0 24px}.amp-library .rl-breadcrumb a{color:inherit;text-decoration:none}.amp-library .rl-breadcrumb a:hover{color:var(--rl-blue)}
.amp-library .rl-index-hero{isolation:isolate;display:grid;grid-template-columns:minmax(0,1.55fr) minmax(240px,1fr);gap:60px;padding:52px 54px;background:#102b43;border-radius:24px;color:#fff;overflow:hidden;position:relative}.amp-library .rl-index-hero:after{content:'';position:absolute;right:-90px;top:-130px;width:600px;height:600px;border:1px solid #ffffff0d;border-radius:50%;box-shadow:0 0 0 60px #ffffff04,0 0 0 120px #ffffff03;pointer-events:none;z-index:-1}.amp-library .rl-index-hero .rl-eyebrow{color:#b7d5f3;display:flex;align-items:center;gap:10px;font-size:10px}.amp-library .rl-live-dot{width:6px;height:6px;border-radius:100%;background:#86b7ef;box-shadow:0 0 0 4px #ffffff0b}.amp-library h1{font-size:clamp(2rem,4.2vw,3.4rem);font-weight:700;letter-spacing:-.04em;line-height:1.12;margin:0 0 20px;color:var(--rl-ink);overflow-wrap:break-word}.amp-library .rl-index-hero h1{font-size:clamp(2.5rem,4.5vw,4rem);color:white;margin:20px 0 22px;letter-spacing:-.055em;line-height:1.04}.amp-library .rl-index-hero h1>span{color:#9dc6f0}.amp-library .rl-deck{font-size:17px;line-height:1.8;max-width:780px;margin:0;color:var(--rl-muted)}.amp-library .rl-index-hero .rl-deck{color:#c4d4e3;font-size:16px;line-height:1.8;max-width:440px}.amp-library .rl-hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:22px;margin-top:28px}.amp-library .rl-button{display:inline-flex;align-items:center;justify-content:center;gap:15px;min-height:48px;padding:12px 20px;background:var(--rl-blue);border:1px solid transparent;border-radius:9px;font-weight:650;font-size:13px;color:white;text-decoration:none;transition:background .15s,box-shadow .15s}.amp-library .rl-button:hover{background:#184dbd;text-decoration:none;box-shadow:0 3px 10px #144b9020}.amp-library .rl-button-light{background:white;color:var(--rl-ink)}.amp-library .rl-button-light:hover{background:#edf4ff}.amp-library .rl-button-outline{background:white;border-color:#bdcedd;color:var(--rl-ink)}.amp-library .rl-button-outline:hover{background:#eff5fb}.amp-library .rl-hero-link{font-size:12px;color:#dbeafe}.amp-library .rl-hero-foot{display:flex;flex-wrap:wrap;gap:12px;margin:29px 0 0;font-size:11px;color:#abc0d3}.amp-library .rl-feature-note{background:#ffffff08;border:1px solid #ffffff20;border-radius:17px;padding:25px 28px;align-self:center}.amp-library .rl-feature-label{font-size:9px;letter-spacing:.17em;color:#a8c6e2;font-weight:700}.amp-library .rl-note-graphic{display:flex;align-items:center;gap:18px;margin:24px 0 23px;color:#accdec}.amp-library .rl-note-graphic>svg{width:43px;height:43px;padding:7px;border:1px solid #ffffff30;border-radius:9px}.amp-library .rl-note-graphic i{font-size:10px;font-style:normal;color:#b6cce1;border:1px solid #ffffff24;border-radius:50%;width:25px;height:25px;text-align:center;line-height:23px}.amp-library .rl-feature-note h2{font-size:25px;font-weight:600;line-height:1.25;letter-spacing:-.025em;margin:0 0 12px;color:white}.amp-library .rl-feature-note p{font-size:12px;line-height:1.7;color:#bfcedd;margin:0 0 21px}.amp-library .rl-feature-note>a{font-size:12px;color:white;display:flex;align-items:center;justify-content:space-between;border-top:1px solid #ffffff20;padding-top:17px}
.amp-library .rl-topic-section{margin:46px 0 50px}.amp-library .rl-section-heading{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:21px}.amp-library .rl-section-heading h2{font-size:26px;line-height:1.2;letter-spacing:-.035em;font-weight:650;margin:0;color:var(--rl-ink)}.amp-library .rl-section-heading .rl-eyebrow{margin-bottom:9px}.amp-library .rl-section-heading>a{display:flex;align-items:center;gap:9px;font-size:12px;white-space:nowrap}.amp-library .rl-section-heading>p{font-size:13px;color:var(--rl-muted);max-width:340px;margin:0}.amp-library .rl-topics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.amp-library .rl-topic{padding:22px;background:#f7f9fc;border:1px solid var(--rl-border);border-radius:14px;text-decoration:none;color:var(--rl-ink);transition:border-color .15s,background .15s;display:flex;flex-direction:column}.amp-library .rl-topic:hover{border-color:#8aace0;background:#f0f5fc;text-decoration:none}.amp-library .rl-topic-icon{width:38px;height:38px;border-radius:9px;background:#e8f0fb;color:#3264b4;display:grid;place-items:center;margin-bottom:19px}.amp-library .rl-topic strong{font-size:16px;font-weight:650;letter-spacing:-.02em;line-height:1.3;display:block}.amp-library .rl-topic>span:not(.rl-topic-icon){font-size:12px;color:var(--rl-muted);line-height:1.6;margin-top:8px}.amp-library .rl-topic .rl-topic-cta{display:flex;justify-content:space-between;align-items:center;color:var(--rl-blue)!important;padding-top:19px;margin-top:auto!important;font-size:11px!important;font-weight:650}
.amp-library .rl-browser{scroll-margin-top:135px;border-top:1px solid var(--rl-border);padding-top:38px}.amp-library .rl-tools{padding:22px;background:white;border:1px solid var(--rl-border);border-radius:15px}.amp-library .rl-search-row{display:flex;align-items:end;gap:18px}.amp-library .rl-search{flex:1;min-width:0}.amp-library label{font-size:11px;font-weight:650;display:block;margin-bottom:8px;color:var(--rl-ink)}.amp-library .rl-input-wrap{position:relative}.amp-library input[type=search]{width:100%;font-size:14px;min-height:50px;padding:12px 42px 12px 43px;border:1px solid #bacbda;border-radius:8px;background:#f9fbfd;color:var(--rl-ink)}.amp-library .rl-search-icon{position:absolute;left:14px;top:15px;color:#72859b;pointer-events:none}.amp-library .rl-search-icon svg{width:19px;height:19px}.amp-library input::placeholder{color:#647a90;opacity:1}.amp-library .rl-sort{width:185px;flex:none}.amp-library select{min-height:50px;font-size:12px;width:100%;padding:12px;border:1px solid #bacbda;border-radius:8px;color:var(--rl-ink);background:#fff}.amp-library .rl-filters{display:flex;flex-wrap:wrap;gap:8px;margin-top:17px}.amp-library .rl-filter{border:1px solid var(--rl-border);border-radius:7px;background:#fff;font-size:11px;color:var(--rl-muted);min-height:36px;padding:8px 12px;transition:background .15s}.amp-library .rl-filter:hover{background:#f0f5fb}.amp-library .rl-filter[aria-pressed=true]{background:#18374e;border-color:#18374e;color:white}.amp-library .rl-tools-bottom{display:flex;align-items:center;gap:14px;border-top:1px solid #e8edf3;margin-top:17px;padding-top:14px}.amp-library .rl-saved-toggle{display:flex;gap:8px;align-items:center;border:0;background:transparent;color:var(--rl-muted);font-size:12px;padding:7px 5px;min-height:36px;border-radius:7px}.amp-library .rl-saved-toggle[aria-pressed=true]{background:#edf3ff;color:#1755b7}.amp-library .rl-saved-toggle svg{width:16px;height:16px}.amp-library .rl-browser-note{font-size:10px;color:#65798c}.amp-library .rl-clear{margin-left:auto;border:0;background:transparent;font-size:11px;min-height:36px;padding:7px;color:var(--rl-blue);text-decoration:underline;text-underline-offset:4px}.amp-library .rl-count{font-size:12px;color:var(--rl-muted);margin:23px 0 15px}.amp-library .rl-count span{color:#78889b}.amp-library .rl-storage-status{font-size:12px;color:#245e51;margin:0 0 12px}.amp-library .rl-storage-status:empty{display:none}.amp-library .rl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.amp-library .rl-card{background:#fff;border:1px solid var(--rl-border);border-radius:13px;padding:23px;display:flex;flex-direction:column;min-width:0;max-width:none;transition:box-shadow .15s,border-color .15s;position:relative}.amp-library .rl-card:hover{border-color:#a1b5cb;box-shadow:0 6px 16px #13334a08}.amp-library .rl-card-top{display:flex;justify-content:space-between;align-items:center;gap:8px;min-height:37px;margin:-7px -8px 15px 0}.amp-library .rl-category{font-size:9px;letter-spacing:.08em;text-transform:uppercase;font-weight:700;color:#3e6488}.amp-library .rl-save{width:36px;height:36px;display:grid;place-items:center;flex-shrink:0;border:1px solid transparent;border-radius:7px;background:transparent;color:#718397}.amp-library .rl-save:hover{background:#edf3fc}.amp-library .rl-save[aria-pressed=true]{color:#2363df;background:#ecf2ff}.amp-library .rl-save[aria-pressed=true] svg{fill:#dae8ff}.amp-library .rl-save svg{width:17px;height:17px}.amp-library .rl-card h3{font-size:19px;line-height:1.35;letter-spacing:-.025em;font-weight:650;margin:0 0 13px}.amp-library .rl-card h3 a{color:var(--rl-ink);text-decoration:none}.amp-library .rl-card h3 a:hover{color:var(--rl-blue);text-decoration:underline}.amp-library .rl-card>p{font-size:12px;line-height:1.8;color:var(--rl-muted);margin:0 0 25px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.amp-library .rl-card-foot{display:flex;gap:10px;justify-content:space-between;align-items:center;border-top:1px solid #edf0f5;margin-top:auto;padding-top:16px;font-size:10px;color:#667b8e}.amp-library .rl-card-foot span,.amp-library .rl-card-foot a{display:flex;align-items:center;gap:6px}.amp-library .rl-card-foot svg{width:14px;height:14px}.amp-library .rl-read{font-size:11px;font-weight:650}.amp-library .rl-load-more{display:flex;align-items:center;justify-content:center;gap:18px;margin:30px 0 8px}.amp-library .rl-load-more>span{font-size:11px;color:var(--rl-muted)}.amp-library .rl-empty{padding:45px 24px;text-align:center;background:#f6f8fc;border:1px solid var(--rl-border);border-radius:15px}.amp-library .rl-empty h3{font-size:22px;font-weight:650;margin:12px 0}.amp-library .rl-empty p{font-size:14px;color:var(--rl-muted);max-width:500px;margin:10px auto 22px}.amp-library .rl-empty-icon svg{width:30px;height:30px;color:#466c99}.amp-library .rl-static-directory-link{margin-top:24px;text-align:center;font-size:13px}
.amp-library .rl-paths-section{border-top:1px solid var(--rl-border);margin-top:52px;padding-top:42px}.amp-library .rl-paths{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.amp-library .rl-path{padding:25px;border-radius:15px;background:#f3f6fb;min-width:0}.amp-library .rl-path-icon{color:#3268af}.amp-library .rl-path h3{font-size:18px;font-weight:650;letter-spacing:-.02em;margin:15px 0 7px}.amp-library .rl-path p{font-size:12px;color:var(--rl-muted);margin:0 0 22px;line-height:1.7}.amp-library .rl-path ol{list-style:none;padding:0;margin:0}.amp-library .rl-path li{display:flex;align-items:start;gap:12px;padding:12px 0;border-top:1px solid #dce4ed;font-size:12px;line-height:1.5}.amp-library .rl-path li>span{font-size:10px;color:#5e7490;margin-top:2px}.amp-library .rl-path a{color:var(--rl-ink)}.amp-library .rl-directory{border:1px solid var(--rl-border);border-radius:13px;padding:18px 22px;margin-top:36px}.amp-library .rl-directory>summary{cursor:pointer;font-size:14px;font-weight:650;min-height:25px}.amp-library .rl-directory summary>span{font-weight:400;font-size:11px;color:var(--rl-muted);margin-left:14px}.amp-library .rl-directory p{font-size:13px;color:var(--rl-muted)}.amp-library .rl-directory ul{columns:2;column-gap:30px;padding-left:18px;margin:18px 0}.amp-library .rl-directory li{break-inside:avoid;font-size:12px;line-height:1.6;margin:0 0 12px}.amp-library .rl-footer-card{background:#edf3f9;border-radius:18px;padding:34px;margin-top:35px;display:grid;grid-template-columns:1fr 1fr;gap:55px}.amp-library .rl-footer-card h2{font-size:25px;letter-spacing:-.03em;font-weight:650;line-height:1.25;margin:15px 0 12px}.amp-library .rl-footer-card p{color:var(--rl-muted);font-size:12px;max-width:460px;line-height:1.8;margin:0}.amp-library .rl-footer-links{align-self:center}.amp-library .rl-footer-links a{display:flex;justify-content:space-between;gap:10px;padding:18px 0;font-size:12px;border-bottom:1px solid #cfdde9}.amp-library .rl-footer-links a:last-child{border:0}
/* Reading experience */
.amp-library .rl-article-hero{display:grid;grid-template-columns:minmax(0,1fr) 240px;align-items:center;gap:45px;background:#f2f6fb;border:1px solid #e5ecf3;border-radius:21px;padding:38px 40px}.amp-library .rl-article-hero h1{font-size:clamp(1.9rem,3.6vw,3.1rem);letter-spacing:-.04em;line-height:1.17}.amp-library .rl-article-hero .rl-deck{font-size:15px;line-height:1.85}.amp-library .rl-article-figure{margin:0}.amp-library .rl-article-figure img{display:block;width:100%;height:156px;object-fit:cover;border-radius:12px}.amp-library .rl-article-figure figcaption{font-size:9px;letter-spacing:.03em;color:#667c92;margin-top:10px}.amp-library .rl-meta{display:flex;flex-wrap:wrap;gap:9px 17px;font-size:10px;color:#60758b;margin-top:20px}.amp-library .rl-article-toolbar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding:18px 0;margin:0 0 30px;border-bottom:1px solid var(--rl-border)}.amp-library .rl-toolbar-actions{display:flex;gap:8px}.amp-library .rl-article-toolbar button{display:flex;align-items:center;gap:8px;font-size:11px;min-height:40px;border:1px solid var(--rl-border);border-radius:7px;color:var(--rl-muted);background:#fff;padding:10px 12px}.amp-library .rl-article-toolbar button:hover{background:#f0f5fc;color:var(--rl-ink)}.amp-library .rl-article-toolbar button[aria-pressed=true]{color:#205dcc;background:#edf3ff;border-color:#b4c9ed}.amp-library .rl-article-toolbar button svg{width:16px;height:16px}.amp-library .rl-article-toolbar strong{font-size:16px;font-weight:500}.amp-library .rl-action-status{width:100%;margin:0;font-size:12px;color:#36624f}.amp-library .rl-action-status:empty{display:none}.amp-library .rl-share-fallback{flex-basis:100%}.amp-library .rl-share-fallback input{font-size:12px;border:1px solid var(--rl-border);border-radius:7px;padding:12px;width:100%;color:var(--rl-ink);background:white}.amp-library .rl-reading{display:grid;grid-template-columns:245px minmax(0,1fr);gap:52px;align-items:start}.amp-library .rl-article-body{min-width:0;max-width:800px}.amp-library .rl-toc{position:sticky;top:130px;max-height:calc(100dvh - 150px);overflow:auto;padding:22px 0 22px 0;border-top:2px solid #19394f}.amp-library .rl-toc summary{display:flex;justify-content:space-between;align-items:center;font-size:12px;font-weight:700;cursor:pointer;min-height:28px;list-style:none}.amp-library .rl-toc summary::-webkit-details-marker{display:none}.amp-library .rl-progress-label{color:#6a7f90;font-size:10px;font-weight:400}.amp-library .rl-toc ol{padding:0;margin:19px 0 0;list-style:none}.amp-library .rl-toc li{margin:0 0 4px}.amp-library .rl-toc li a{display:flex;gap:10px;border-left:2px solid transparent;padding:9px 10px;color:#5a7084;font-size:12px;line-height:1.6;text-decoration:none}.amp-library .rl-toc li a span{font-size:10px;color:#8394a4;margin-top:2px}.amp-library .rl-toc a[aria-current]{color:#1d5dcb;border-color:#3272e2;background:#f0f5fd;border-radius:0 6px 6px 0;font-weight:600}.amp-library .rl-toc li a:hover{color:var(--rl-blue);background:#f5f8fc}.amp-library .rl-toc-foot{border-top:1px solid var(--rl-border);margin-top:22px;padding-top:17px;font-size:10px;line-height:1.6}.amp-library .rl-toc-foot span{display:block;color:var(--rl-muted);margin-top:12px}.amp-library .rl-at-a-glance{padding:24px 27px;border:1px solid #d3e1f1;border-radius:12px;background:#f6f9fe;margin:0 0 34px}.amp-library .rl-at-a-glance ul{padding-left:17px;margin:0;display:grid;gap:9px}.amp-library .rl-at-a-glance li{font-size:13px;color:#4c6884}.amp-library .rl-at-a-glance a{color:#375e89}.amp-library .rl-source-jump{font-size:11px;display:inline-block;margin-top:16px}.amp-library .rl-section{scroll-margin-top:140px;margin:0 0 38px;padding:0 0 30px;border-bottom:1px solid #e8edf2}.amp-library .rl-section h2,.amp-library .rl-faq h2,.amp-library .rl-related h2{font-size:25px;line-height:1.3;font-weight:650;letter-spacing:-.025em;margin:0 0 21px;color:var(--rl-ink);overflow-wrap:break-word}.amp-library .rl-section-number{font-size:11px;line-height:1.4;letter-spacing:.05em;color:#5b7c9e;display:block;margin-bottom:10px}.amp-library .rl-section h3{font-size:19px;line-height:1.4;font-weight:650;margin:26px 0 12px}.amp-library .rl-section p,.amp-library .rl-section li{font-size:16px;line-height:1.9;color:#3d5368}.amp-library[data-text=large] .rl-section p,.amp-library[data-text=large] .rl-section li{font-size:19px}.amp-library .rl-section p{margin:0 0 17px}.amp-library .rl-section ul,.amp-library .rl-section ol{padding-left:23px;margin:18px 0}.amp-library .rl-section li{margin-bottom:10px}.amp-library .rl-section strong{color:var(--rl-ink);font-weight:650}.amp-library .rl-section a{overflow-wrap:anywhere}.amp-library .rl-notice{border-left:3px solid #a5c3e8;background:#f4f7fb;padding:16px 19px;border-radius:0 9px 9px 0;font-size:12px;line-height:1.85;color:#50677d;margin:26px 0}.amp-library .rl-editorial-note{margin-top:0}.amp-library .rl-progress-track{position:fixed;top:0;left:0;right:0;height:3px;z-index:160;pointer-events:none}.amp-library .rl-progress-bar{height:100%;width:0;background:#2f72e6}.amp-library .rl-faq{scroll-margin-top:140px;margin:38px 0}.amp-library .rl-faq details{border:1px solid var(--rl-border);border-radius:10px;margin-bottom:10px}.amp-library .rl-faq summary{padding:18px;font-size:14px;font-weight:600;cursor:pointer;line-height:1.5}.amp-library .rl-faq details[open] summary{color:#205dcc}.amp-library .rl-faq details p{margin:0;padding:0 18px 18px;font-size:14px;line-height:1.8;color:var(--rl-muted)}.amp-library .rl-related{padding-top:32px;border-top:1px solid var(--rl-border);margin-top:36px}.amp-library .rl-related h2{margin:0}.amp-library .rl-related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.amp-library .rl-related-grid>a{padding:23px;border:1px solid var(--rl-border);border-radius:12px;background:#f6f8fc;text-decoration:none;display:flex;flex-direction:column;gap:12px}.amp-library .rl-related-grid>a:hover{border-color:#81a7d3}.amp-library .rl-related-grid span{color:#5b7690;font-size:10px}.amp-library .rl-related-grid strong{font-size:17px;font-weight:600;letter-spacing:-.02em;line-height:1.5;color:var(--rl-ink)}.amp-library .rl-related-grid svg{margin-top:auto;align-self:end}.amp-library .rl-catalogue-link{display:flex;align-items:center;justify-content:space-between;gap:30px;background:#112e45;color:white;padding:28px 30px;border-radius:16px;margin-top:28px}.amp-library .rl-catalogue-link h2{font-size:23px;font-weight:600;letter-spacing:-.02em;margin:0 0 9px;color:white}.amp-library .rl-catalogue-link .rl-eyebrow{color:#b2cce3}.amp-library .rl-catalogue-link p:not(.rl-eyebrow){font-size:12px;line-height:1.7;color:#b8ccde;max-width:550px;margin:0}.amp-library .rl-catalogue-link>a{display:flex;gap:20px;align-items:center;font-size:12px;white-space:nowrap;color:white}.amp-library .rl-back-top{display:inline-flex;padding:10px 0;font-size:12px}.amp-library .amp-table-scroll{overflow:auto;border:1px solid var(--rl-border);border-radius:10px;margin:22px 0;max-width:100%}.amp-library table{width:100%;border-collapse:collapse;font-size:13px;min-width:470px}.amp-library th,.amp-library td{padding:15px;text-align:left;vertical-align:top;border-bottom:1px solid var(--rl-border);line-height:1.7}.amp-library th{background:#edf3fa;color:var(--rl-ink);font-weight:650}.amp-library tr:last-child td{border-bottom:0}.amp-library tr:nth-child(even) td{background:#f9fbfd}.amp-library .amp-source-link{font-size:12px;overflow-wrap:anywhere}.amp-library .amp-resource-list{list-style:none!important;padding:0!important;display:grid;gap:12px}.amp-library .amp-resource-list li{background:#f6f8fc;border:1px solid var(--rl-border);border-radius:11px;padding:20px;margin:0}.amp-library .amp-resource-list li>a{font-size:16px;font-weight:650}.amp-library .amp-resource-list p{font-size:13px;line-height:1.8;margin:8px 0 0}
/* Product reading panel: styling only; catalogue, product controls and prices untouched. */
.amp-resource-strip{box-sizing:border-box;max-width:1180px;margin:40px auto 50px;padding:28px 30px;border:1px solid #dce5ee;border-radius:18px;background:linear-gradient(110deg,#f1f6fc,#fff);color:#142d43}.amp-resource-strip h2{font-size:23px;font-weight:650;letter-spacing:-.025em;margin:0 0 8px}.amp-resource-strip p{font-size:13px;line-height:1.8;color:#536a80;max-width:750px;margin:0 0 19px}.amp-resource-strip ul{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;padding:0;margin:0;list-style:none}.amp-resource-strip a{height:100%;display:flex;align-items:center;padding:15px 17px;background:#fff;border:1px solid #d6e1ed;border-radius:9px;color:#235cb2;font-size:12px;line-height:1.65;text-decoration:none}.amp-resource-strip a:hover{background:#f3f7ff;border-color:#95b8e2;text-decoration:underline}.amp-resource-strip a:focus-visible{outline:3px solid #3880f5;outline-offset:4px}
@media(min-width:1600px){.amp-library{padding-top:40px}}
@media(max-width:1050px){.amp-library .rl-index-hero{gap:28px;padding:36px}.amp-library .rl-reading{grid-template-columns:220px minmax(0,1fr);gap:30px}.amp-library .rl-article-hero{grid-template-columns:minmax(0,1fr) 180px;gap:24px;padding:30px}.amp-library .rl-topics{gap:10px}.amp-library .rl-topic{padding:18px}.amp-library .rl-feature-note{padding:23px}.amp-library .rl-feature-note h2{font-size:23px}}
@media(max-width:900px){.amp-library .rl-topics{grid-template-columns:repeat(2,minmax(0,1fr))}.amp-library .rl-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.amp-library .rl-reading{display:flex;flex-direction:column;gap:25px}.amp-library .rl-toc{position:static;max-height:none;border:1px solid var(--rl-border);border-radius:11px;padding:16px 19px;width:100%;background:#f7f9fc}.amp-library .rl-toc summary:after{content:'+';font-weight:400;font-size:20px;margin-left:8px}.amp-library .rl-toc details[open] summary:after{content:'−'}.amp-library .rl-toc .rl-progress-label{margin-left:auto}.amp-library .rl-toc-foot{display:none}.amp-library .rl-toc ol{display:grid;grid-template-columns:1fr 1fr;gap:5px 12px}.amp-library .rl-paths{gap:12px}.amp-library .rl-path{padding:20px}.amp-library .rl-path h3{font-size:16px}.amp-library .rl-article-body{max-width:none;width:100%}.amp-library .rl-article-hero{grid-template-columns:1fr}.amp-library .rl-article-figure{display:none}.amp-library .rl-section-heading>p{max-width:250px}.amp-library .rl-hero-actions{gap:16px}.amp-library .rl-hero-link{font-size:11px}}
@media(max-width:680px){.amp-library{padding:22px 17px 45px}.amp-library .rl-breadcrumb{margin-bottom:18px;font-size:11px;gap:8px}.amp-library .rl-index-hero{grid-template-columns:1fr;padding:29px 26px 26px;border-radius:18px;gap:24px}.amp-library .rl-index-hero h1{font-size:43px;line-height:1.07;margin:17px 0}.amp-library .rl-index-hero .rl-deck{font-size:14px;line-height:1.8;max-width:430px}.amp-library .rl-feature-note{padding:16px 18px;display:grid;grid-template-columns:1fr auto;gap:9px 15px;border-radius:11px}.amp-library .rl-feature-label{grid-column:1/-1;font-size:8px}.amp-library .rl-note-graphic,.amp-library .rl-feature-note p{display:none}.amp-library .rl-feature-note h2{font-size:18px;line-height:1.4;margin:0;letter-spacing:-.02em}.amp-library .rl-feature-note h2 br{display:none}.amp-library .rl-feature-note>a{font-size:0;border:0;padding:0;gap:0}.amp-library .rl-feature-note>a svg{width:22px;height:22px}.amp-library .rl-hero-actions{margin-top:23px}.amp-library .rl-hero-foot{font-size:9px;gap:9px;margin-top:23px}.amp-library .rl-topic-section{margin:34px 0 32px}.amp-library .rl-section-heading{align-items:start;flex-direction:column;gap:13px;margin-bottom:18px}.amp-library .rl-section-heading h2{font-size:25px}.amp-library .rl-section-heading>a{font-size:11px}.amp-library .rl-section-heading>p{font-size:12px;max-width:100%}.amp-library .rl-eyebrow{font-size:9px}.amp-library .rl-topic{padding:18px 15px;border-radius:11px}.amp-library .rl-topic-icon{width:33px;height:33px;margin-bottom:13px}.amp-library .rl-topic strong{font-size:14px}.amp-library .rl-topic>span:not(.rl-topic-icon){font-size:11px}.amp-library .rl-topic .rl-topic-cta{font-size:10px!important;padding-top:15px;gap:7px}.amp-library .rl-topic-cta svg{width:16px;height:16px}.amp-library .rl-browser{padding-top:30px}.amp-library .rl-tools{padding:16px}.amp-library .rl-search-row{flex-direction:column;align-items:stretch;gap:12px}.amp-library .rl-sort{width:100%;display:flex;align-items:center;gap:15px}.amp-library .rl-sort label{margin:0;flex:none}.amp-library select{min-height:42px;padding:9px 12px}.amp-library .rl-filters{gap:7px}.amp-library .rl-filter{font-size:10px;padding:8px 10px;min-height:35px}.amp-library .rl-tools-bottom{flex-wrap:wrap;gap:6px 8px}.amp-library .rl-browser-note{order:3;flex-basis:100%;font-size:9px}.amp-library .rl-grid{grid-template-columns:1fr;gap:12px}.amp-library .rl-card{padding:22px}.amp-library .rl-card h3{font-size:20px;line-height:1.4}.amp-library .rl-card>p{font-size:13px;line-height:1.8;margin-bottom:22px}.amp-library .rl-category{font-size:9px}.amp-library .rl-load-more{flex-direction:column;gap:10px}.amp-library .rl-load-more .rl-button{width:100%}.amp-library .rl-paths{grid-template-columns:1fr;gap:13px}.amp-library .rl-path h3{font-size:19px}.amp-library .rl-path{padding:24px}.amp-library .rl-paths-section{margin-top:35px;padding-top:30px}.amp-library .rl-directory{padding:17px;margin-top:28px}.amp-library .rl-directory summary>span{display:block;margin:5px 0 0 16px}.amp-library .rl-directory ul{columns:1}.amp-library .rl-footer-card{padding:25px;grid-template-columns:1fr;gap:20px}.amp-library .rl-footer-card h2{font-size:24px}.amp-library .rl-footer-links a{padding:15px 0}.amp-library .rl-article-hero{padding:25px 23px;border-radius:15px}.amp-library .rl-article-hero h1{font-size:31px;line-height:1.2;letter-spacing:-.035em}.amp-library .rl-article-hero .rl-deck{font-size:14px;line-height:1.85}.amp-library .rl-meta{font-size:10px;gap:7px 12px;margin-top:18px}.amp-library .rl-last-crumb{max-width:180px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.amp-library .rl-article-toolbar{margin-bottom:23px;padding:14px 0;gap:8px}.amp-library .rl-toolbar-actions{gap:6px}.amp-library .rl-article-toolbar button{font-size:10px;padding:9px 10px;gap:6px}.amp-library .rl-article-toolbar>[data-action=text-size]{margin-left:0}.amp-library .rl-toc ol{grid-template-columns:1fr}.amp-library .rl-at-a-glance{padding:21px}.amp-library .rl-at-a-glance li{font-size:12px;line-height:1.7}.amp-library .rl-section h2{font-size:24px;line-height:1.35}.amp-library .rl-section h3{font-size:18px}.amp-library .rl-section p,.amp-library .rl-section li{font-size:15px;line-height:1.9}.amp-library[data-text=large] .rl-section p,.amp-library[data-text=large] .rl-section li{font-size:18px}.amp-library .rl-section{margin-bottom:30px;padding-bottom:24px}.amp-library .rl-related-grid{grid-template-columns:1fr;gap:11px}.amp-library .rl-related-grid>a{padding:20px}.amp-library .rl-catalogue-link{flex-direction:column;align-items:start;padding:24px}.amp-library .rl-notice{font-size:11px}.amp-resource-strip{margin:28px 17px;padding:24px}.amp-resource-strip h2{font-size:21px}.amp-resource-strip ul{grid-template-columns:1fr}.amp-resource-strip a{font-size:12px}}
@media(max-width:360px){.amp-library{padding-left:13px;padding-right:13px}.amp-library .rl-index-hero{padding:25px 22px}.amp-library .rl-index-hero h1{font-size:37px}.amp-library .rl-hero-foot{font-size:8px;gap:7px}.amp-library .rl-topic{padding:15px 12px}.amp-library .rl-topic .rl-topic-cta{font-size:9px!important}.amp-library .rl-article-hero h1{font-size:27px}.amp-library .rl-article-hero{padding:23px 19px}.amp-library .rl-toolbar-actions{gap:4px}.amp-library .rl-article-toolbar button{padding:9px 8px}.amp-library .rl-toolbar-actions svg{width:14px;height:14px}}
@media(prefers-reduced-motion:reduce){.amp-library *{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
@media print{.amp-library{max-width:none;padding:0;color:black}.amp-library .rl-article-hero{display:block;background:white;border:0;border-radius:0;padding:0}.amp-library .rl-article-figure,.amp-library .rl-article-toolbar,.amp-library .rl-toc,.amp-library .rl-progress-track,.amp-library .rl-related,.amp-library .rl-catalogue-link,.amp-library .rl-back-top,.amp-library .rl-breadcrumb,.amp-resource-strip{display:none!important}.amp-library .rl-reading{display:block}.amp-library .rl-article-body{max-width:none}.amp-library .rl-section p,.amp-library .rl-section li{font-size:11pt;line-height:1.6}.amp-library .amp-table-scroll{overflow:visible!important}.amp-library table{min-width:0!important;table-layout:fixed;font-size:9pt}.amp-library th,.amp-library td{padding:8px;overflow-wrap:anywhere}.amp-library .rl-section h2{break-after:avoid;font-size:18pt}.amp-library .rl-at-a-glance{break-inside:avoid}.amp-print-guide .fixed,.amp-print-guide #initial-loader,.amp-print-guide footer,.amp-print-guide .amp-skip-link{display:none!important}.amp-library a{color:#142b48}.amp-library .rl-faq details{break-inside:avoid}}
/* The storefront has global !important heading colours; override only dark research panels. */
body .amp-library .rl-index-hero h1,body .amp-library .rl-feature-note h2,body .amp-library .rl-catalogue-link h2{color:#fff!important}
body .amp-library .rl-index-hero h1{font-size:clamp(2.5rem,4.5vw,4rem)!important;line-height:1.04!important}
body .amp-library .rl-feature-note h2{font-size:25px!important;line-height:1.3!important}
@media(max-width:680px){body .amp-library .rl-index-hero h1{font-size:43px!important;line-height:1.07!important}body .amp-library .rl-feature-note h2{font-size:18px!important;line-height:1.4!important}.amp-library .rl-hero-actions{row-gap:12px}.amp-library .rl-hero-foot{margin-top:23px!important}}
@media(max-width:360px){body .amp-library .rl-index-hero h1{font-size:37px!important}}

.amp-library .rl-article-figure img{height:auto;aspect-ratio:1200/630;object-fit:contain}