:root{--paper: #f9f7f2;--ink: #11171a;--muted: #53555b;--orange: #ce3e14;--rule: #c5c3be;--strong-rule: #4b5052;color-scheme:light}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:20px}body{margin:0;background:var(--paper);color:var(--ink);font-family:Georgia,Times New Roman,serif}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:4px}button,input,select{font:inherit}button,a,input,select,summary{outline-offset:5px}a:focus-visible,button:focus-visible{outline:2px solid var(--orange)}img{max-width:100%;display:block;object-fit:cover}p{line-height:1.45;margin:0 0 12px}h1,h2,h3{font-weight:500;letter-spacing:-.045em;line-height:1.05;margin:0 0 12px}h1{font-size:64px}h2{font-size:42px}h3{font-size:23px}.site-wrap{max-width:1280px;margin:auto;padding:0 40px}.masthead{min-height:82px;border-bottom:1px solid var(--rule);display:flex;align-items:center;gap:35px}.wordmark{font-size:42px;font-weight:700;letter-spacing:-2.8px;white-space:nowrap}.wordmark span{color:var(--orange)}.masthead nav{display:flex;gap:32px;margin:auto;font-size:16px}.masthead-note{font-size:16px;border-left:1px solid var(--rule);padding-left:24px;margin:0;line-height:1.2}.search-link{font-size:14px}.masthead [aria-current]{color:var(--orange)}.eyebrow,.meta,.byline,.ad-label{font-family:Arial,sans-serif}.eyebrow{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:1.7px}.hero{display:grid;grid-template-columns:1.3fr 1fr;gap:32px;align-items:center;padding:25px 0 30px;border-bottom:1px solid var(--strong-rule)}.hero h1{font-size:clamp(45px,5.4vw,72px);letter-spacing:-.045em;line-height:1.02}.hero img{width:100%;height:350px;object-fit:cover}.hero-summary{font-size:23px;max-width:620px;line-height:1.25;margin:18px 0 25px}.actions{display:flex;gap:30px;align-items:center}.button{display:inline-flex;justify-content:center;align-items:center;background:var(--orange);color:#fff;border:1px solid var(--orange);padding:12px 24px;cursor:pointer;font-size:17px;border-radius:2px;line-height:1.2}.button:hover{background:#ae3010;text-decoration:none}.button.secondary{background:transparent;color:var(--ink);border-color:var(--rule)}.text-link{color:var(--orange);font-size:17px;line-height:1.3}.editorial-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:32px;margin:24px 0}.ad-sidebar{border-left:1px solid var(--rule);padding-left:25px;box-sizing:content-box}.section-label{margin-bottom:14px}.featured img{width:100%;aspect-ratio:2.1;object-fit:cover}.featured h2{font-size:48px}.featured>p:not(.meta){font-size:21px;line-height:1.3}.meta{display:flex;gap:12px;flex-wrap:wrap;font-size:10px;letter-spacing:1px;text-transform:uppercase;align-items:center;margin:16px 0 10px}.meta a{color:var(--orange);font-weight:600}.latest{border-top:1px solid var(--strong-rule);margin-top:24px;padding-top:16px}.latest-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.mini-article{display:flex;gap:18px}.mini-article+article{padding-left:24px;border-left:1px solid var(--rule)}.mini-article>a{flex-shrink:0;width:92px}.mini-article img{height:165px;width:92px}.mini-article h3{font-size:24px}.mini-article p:not(.meta){font-size:15px;line-height:1.3;color:var(--muted)}.mini-article .meta{margin-top:0;font-size:9px;letter-spacing:.6px;gap:7px}.topic-section{border-top:1px solid var(--strong-rule);padding-top:16px;margin-top:28px}.topic-strip{display:grid;grid-template-columns:repeat(5,1fr);gap:22px}.topic-item+.topic-item{border-left:1px solid var(--rule);padding-left:22px}.topic-item img{width:54px;height:46px;margin-bottom:10px}.topic-item h3{font-size:21px;letter-spacing:-.035em;white-space:normal}.topic-item p{color:var(--muted);font-size:15px;line-height:1.3}.starter-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;padding:20px 0;border-top:1px solid var(--strong-rule);margin-top:24px}.start-step{display:flex;gap:20px;margin:16px 0;align-items:center}.start-step h3{font-size:20px;margin-bottom:2px;letter-spacing:-.02em}.start-step p{font-size:15px;line-height:1.25;color:var(--muted);margin:0}.step-number{border-radius:50%;background:var(--orange);color:#fff;width:30px;height:30px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.start-step .text-link{margin-left:auto}.term-preview{display:grid;grid-template-columns:110px 1fr;gap:18px;border-bottom:1px solid var(--rule);padding:10px 0}.term-preview h3{font-size:19px;letter-spacing:-.01em;margin:0}.term-preview p{font-size:14px;line-height:1.25;color:var(--muted);margin:0}.starter-grid>div>.text-link{display:inline-block;margin-top:12px}.footer{border-top:1px solid var(--rule);margin-top:25px;padding:24px 0;display:flex;flex-wrap:wrap;align-items:center;gap:25px}.footer>div{display:flex;align-items:center;gap:22px}.footer .wordmark{font-size:30px;letter-spacing:-1.8px}.footer p{font-size:14px;color:var(--muted);margin:0}.footer nav{display:flex;gap:20px;margin-left:auto;font-size:14px;flex-wrap:wrap}.footer button{background:none;border:0;padding:0;color:inherit;cursor:pointer}.footer small{width:100%;font-size:12px;color:var(--muted)}.page-intro{padding:32px 0 24px;max-width:850px}.page-intro h1{font-size:62px;margin-top:16px}.page-intro>p:last-child{font-size:22px;color:var(--muted);line-height:1.3}.search-form{display:flex;gap:12px;padding:20px 0;border-top:1px solid var(--strong-rule);border-bottom:1px solid var(--rule)}input,select{background:transparent;border:1px solid #999a96;padding:12px;color:var(--ink);border-radius:2px}input{min-width:0}.search-form input{flex:1}.search-form select{max-width:230px}.article-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px 24px}.article-card img{width:100%;aspect-ratio:1.9}.article-card h2{font-size:29px}.article-card>p:not(.meta){font-size:17px;color:var(--muted);line-height:1.35}.article-card{padding-bottom:22px;border-bottom:1px solid var(--rule)}.article-intro{padding:35px 0 20px;max-width:900px}.article-intro h1{font-size:68px;margin:20px 0}.standfirst{font-size:24px;line-height:1.3;color:var(--muted)}.byline{font-size:12px;margin-top:20px;color:var(--muted)}.article-cover{width:100%;aspect-ratio:2.1}.prose{font-size:20px;line-height:1.65}.prose p{line-height:1.65;margin-bottom:22px}.prose h2{font-size:34px;margin:38px 0 18px;line-height:1.1;scroll-margin-top:24px}.prose h3{font-size:26px;margin:30px 0 14px}.prose ul,.prose ol{padding-left:28px;margin:18px 0 24px}.prose li{padding-left:5px;margin-bottom:10px}.prose a{color:var(--orange);text-decoration:underline}.prose blockquote{border-left:3px solid var(--orange);margin:24px 0;padding:5px 24px;color:var(--muted)}.contents{padding:20px;background:#efece3;margin:24px 0}.contents summary{cursor:pointer;font-size:19px}.contents nav{display:flex;flex-direction:column;gap:10px;margin-top:14px;font-size:16px}.contents nav a{color:var(--orange)}.article-end{border-top:1px solid var(--rule);padding-top:22px;margin-top:32px}.related{border-top:1px solid var(--strong-rule);padding-top:20px;margin-top:30px}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.alphabet{display:flex;flex-wrap:wrap;gap:5px;padding:18px 0}.alphabet a{padding:6px 9px}.alphabet [aria-current]{background:var(--orange);color:#fff}.letter-heading{font-size:42px;border-bottom:1px solid var(--strong-rule);padding-bottom:12px;margin:28px 0 0}.letter-heading:first-child{margin-top:0}.glossary-entry{border-bottom:1px solid var(--rule);padding:22px 0;scroll-margin-top:20px}.glossary-entry h3{font-size:27px;display:flex;gap:18px}.glossary-entry h3 a{font-size:18px;color:var(--muted)}.glossary-entry p{font-size:19px;color:var(--muted)}.small{font-size:14px}.topic-directory{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;border-top:1px solid var(--strong-rule);padding-top:25px}.topic-tile{padding-bottom:24px;border-bottom:1px solid var(--rule)}.topic-tile img{width:100%;aspect-ratio:1.9;margin-bottom:22px}.topic-tile h2{font-size:33px}.topic-tile>p:not(.eyebrow){font-size:20px;color:var(--muted)}.page-body{max-width:850px;margin-bottom:70px}.page-image{width:100%;aspect-ratio:2.1;margin-bottom:35px}.empty-state{padding:40px 0;grid-column:1/-1}.pagination nav{display:flex;gap:24px;justify-content:center;margin:30px 0;font-size:16px}.pagination a{color:var(--orange)}.preview-note{background:#f5dcc5;border:1px solid var(--orange);padding:14px;margin:20px 0}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.skip-link{position:absolute;top:-60px;left:20px;background:var(--paper);z-index:20;padding:12px}.skip-link:focus{top:0}.cookie-banner[hidden]{display:none}.cookie-banner{position:fixed;bottom:18px;left:24px;right:24px;max-width:1100px;margin:auto;background:var(--paper);border:1px solid var(--ink);padding:20px;display:flex;gap:18px;align-items:center;box-shadow:0 4px 20px #0002;z-index:10}.cookie-banner>div{flex:1}.cookie-banner p{font:14px/1.5 Arial,sans-serif;margin:6px 0 0}.cookie-banner a{text-decoration:underline}.cookie-banner button{font:14px Arial,sans-serif;flex-shrink:0}img,.featured img,.article-card img,.article-cover,.page-image,.topic-tile img{height:auto}.ad-sidebar{box-sizing:border-box;width:326px}.editorial-grid{grid-template-columns:minmax(0,1fr) 326px}.hero h1,.featured h2{font-weight:600}.site-wrap .adops-ad-top_banner .adops-ad-box{margin:0;position:relative;left:50%;transform:translate(-50%)}@media(max-width:1100px){.site-wrap{padding:0 30px}.masthead{gap:22px}.masthead-note{display:none}.masthead nav{margin-left:auto}.hero h1{font-size:56px}.hero img{height:300px}.editorial-grid{gap:26px}.ad-sidebar{padding-left:20px;width:321px}.editorial-grid{grid-template-columns:minmax(0,1fr) 321px}.mini-article>a{width:72px}.mini-article img{width:72px}.latest-grid{gap:18px}.mini-article+article{padding-left:18px}.featured h2{font-size:43px}}@media(max-width:1023px){.editorial-grid{grid-template-columns:1fr}.ad-sidebar{display:none}.hero img{height:300px}.hero h1{font-size:50px}.hero-summary{font-size:21px}.topic-strip{gap:14px}.topic-item+.topic-item{padding-left:14px}.masthead .wordmark{font-size:37px}}@media(max-width:767px){.site-wrap{padding:0 22px}.masthead{flex-wrap:wrap;gap:0;padding:14px 0;min-height:auto}.masthead .wordmark{font-size:35px}.search-link{margin-left:auto}.masthead nav{order:3;width:100%;justify-content:space-between;margin-top:18px;gap:15px;font-size:15px}.hero{display:flex;flex-direction:column;align-items:stretch;gap:24px;padding:24px 0}.hero h1{font-size:45px;line-height:1.04}.hero h1 br{display:none}.hero-summary{font-size:20px;margin:18px 0 22px}.hero img{height:auto;aspect-ratio:1.4}.actions{gap:20px;flex-wrap:wrap}.button{font-size:16px;padding:12px 18px}.text-link{font-size:16px}.eyebrow{font-size:10px;letter-spacing:1.4px}.editorial-grid{margin-top:22px}.featured h2{font-size:38px}.featured>p:not(.meta){font-size:19px}.featured img{aspect-ratio:1.8}.latest-grid{grid-template-columns:1fr;gap:22px}.mini-article+article{border-left:0;padding-left:0;border-top:1px solid var(--rule);padding-top:22px}.mini-article>a,.mini-article img{width:100px}.mini-article img{height:150px}.mini-article h3{font-size:26px}.mini-article p:not(.meta){font-size:16px}.mini-article .meta{font-size:9px}.topic-strip{grid-template-columns:1fr 1fr;gap:20px}.topic-item+.topic-item{padding:0;border:0}.topic-item{border-bottom:1px solid var(--rule)!important;padding-bottom:16px!important}.topic-item:last-child{grid-column:1/-1}.starter-grid{grid-template-columns:1fr;gap:28px}.starter-grid>div+div{border-top:1px solid var(--rule);padding-top:22px}.term-preview{grid-template-columns:95px 1fr}.footer>div{flex-wrap:wrap;gap:12px}.footer nav{margin:0;gap:18px}.page-intro{padding-top:26px}.page-intro h1{font-size:45px}.page-intro>p:last-child{font-size:20px}.search-form{flex-wrap:wrap;gap:10px}.search-form input{flex-basis:100%}.search-form select{flex:1;max-width:none;min-width:0}.article-grid{grid-template-columns:1fr}.article-card h2{font-size:31px}.article-intro{padding-top:25px}.article-intro h1{font-size:46px}.standfirst{font-size:21px}.prose{font-size:18px}.prose h2{font-size:30px}.article-cover{aspect-ratio:1.8}.related-grid,.topic-directory{grid-template-columns:1fr}.alphabet{gap:1px}.alphabet a{padding:7px 9px}.cookie-banner{left:12px;right:12px;bottom:12px;flex-wrap:wrap;padding:16px;gap:12px}.cookie-banner>div{flex-basis:100%}.cookie-banner button{flex:1}.byline{line-height:1.6}.glossary-entry p{font-size:18px}}.menu-toggle{display:none;background:transparent;border:0;padding:8px;cursor:pointer}.search-link img{width:23px;height:23px}.search-link{padding:8px}.featured picture{display:block}.featured picture img{width:100%;height:auto}@media(max-width:767px){.masthead nav{display:none}.masthead[data-menu-open] nav{display:flex}.menu-toggle{display:block;margin-left:12px}.masthead{padding:10px 0}.masthead .wordmark{font-size:34px}.hero .eyebrow{display:none}.hero h1{font-size:32px}.hero-summary{font-size:17px}.hero .actions>.text-link{display:none}.featured{display:grid;grid-template-columns:42% 1fr;column-gap:16px;align-content:start}.featured>a:first-child{grid-row:1/5}.featured picture img{height:200px;aspect-ratio:.8;object-fit:cover;object-position:left}.featured .meta{margin-top:0;font-size:9px;gap:6px}.featured h2{font-size:28px}.featured>p:not(.meta){font-size:16px}.featured>.text-link{font-size:15px}.topic-strip{grid-template-columns:1fr;gap:0}.topic-item{display:grid;grid-template-columns:44px 1fr;column-gap:16px;padding:14px 0!important}.topic-item img{grid-row:1/4;align-self:center;width:40px;height:38px;margin:0}.topic-item h3{font-size:20px;margin-bottom:3px}.topic-item p{font-size:14px;margin-bottom:5px}.topic-item .text-link{font-size:13px}.starter-grid{display:none}.mini-article h3{font-size:24px}.mini-article p:not(.meta){font-size:15px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}.topic-index .page-intro{padding-top:0}.topic-index{margin-top:38px}.topic-index .topic-directory{display:block}.topic-index .topic-tile{display:grid;grid-template-columns:40% 1fr;gap:24px;padding:22px 0}.topic-index .topic-tile img{margin:0;height:auto;aspect-ratio:1.4}.topic-index .topic-tile .eyebrow{margin:0 0 8px}.topic-index .topic-tile p:not(.eyebrow){font-size:18px;margin:8px 0 16px}.topic-index .ad-sidebar{padding-top:0}.glossary-hero{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:30px;align-items:center}.glossary-hero img{width:100%;height:auto;aspect-ratio:1.4}.glossary-hero .page-intro{padding-bottom:24px}.glossary-hero .search-form{gap:10px}.glossary-entry{display:grid;grid-template-columns:155px 1fr;gap:8px 22px}.glossary-entry h3{grid-row:1/3;margin:0}.glossary-entry p{margin:0}.glossary-entry>.text-link{grid-column:2}.about-hero h1{font-size:54px;line-height:1.03}.about-hero img{object-fit:contain;aspect-ratio:1.4;height:auto}.about-hero .eyebrow{display:block}.about-hero~.editorial-grid .page-body{max-width:none}@media(max-width:1100px){.glossary-hero h1{font-size:48px}.glossary-hero .search-form{flex-wrap:wrap}.glossary-hero .search-form input{flex-basis:100%}.about-hero h1{font-size:48px}.topic-index .topic-tile h2{font-size:29px}}@media(max-width:767px){.glossary-hero{grid-template-columns:1fr}.glossary-hero img{display:none}.glossary-hero h1{font-size:38px}.topic-index .topic-tile{grid-template-columns:35% 1fr;gap:16px}.topic-index .topic-tile h2{font-size:25px}.topic-index .topic-tile p:not(.eyebrow){font-size:16px}.topic-index .page-intro h1{font-size:38px}.glossary-entry{display:block}.glossary-entry h3{margin-bottom:10px}.glossary-entry p{margin-bottom:8px}.about-hero h1{font-size:36px}}@media(max-width:767px){html{scrollbar-width:none}.site-wrap .adops-ad-mobile_rectangle{margin-left:0;margin-right:0;position:relative;left:50%;transform:translate(-50%)}}.editorial-grid>*{min-width:0}@media(max-width:1023px){.editorial-grid{grid-template-columns:minmax(0,1fr)}}.library-featured{display:grid;grid-template-columns:1fr 1fr;gap:24px;padding:0 0 24px;margin-bottom:28px;border-bottom:1px solid var(--rule)}.library-featured>*{min-width:0}.library-featured img{width:100%;height:240px;object-fit:cover}.library-featured h2{font-size:30px;line-height:1.08;margin:12px 0}.library-featured p:not(.meta){font-size:17px;line-height:1.4;margin-bottom:16px}@media(max-width:767px){.library-featured{gap:16px}.library-featured img{height:240px}.library-featured h2{font-size:24px}.library-featured p:not(.meta){font-size:15px}.library-featured .meta{flex-wrap:wrap;gap:6px}}.calculator-stack{min-width:0}.calculator{padding:12px 0 42px;margin-bottom:36px;border-bottom:1px solid var(--rule);scroll-margin-top:24px}.calculator h2{font-size:36px;line-height:1.1;margin:14px 0}.calculator>p{line-height:1.55}.calculator-inputs{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:28px 0}.calculator-inputs>div{min-width:0}.calculator label{display:block;font:600 13px Arial,sans-serif;margin-bottom:8px}.calculator input{width:100%;min-width:0;box-sizing:border-box;border:1px solid #88877f;border-radius:0;background:#fffdf8;color:var(--ink);font:17px Arial,sans-serif;padding:12px;min-height:48px}.calculator-reset{border:0;background:none;cursor:pointer;padding:12px}.calculator-error{color:#a52b10;font:15px Arial,sans-serif}.calculator-results{display:grid;grid-template-columns:1fr 1fr;gap:0 24px;margin:0}.calculator-results>div{border-top:1px solid var(--rule);padding:20px 0;min-width:0}.calculator-results dt{font:600 13px Arial,sans-serif}.calculator-results dd{font:32px Georgia,serif;margin:10px 0;overflow-wrap:anywhere}.calculator-results small,.calculator-note{font:14px/1.5 Arial,sans-serif;color:#555}.calculator-help{margin-top:24px;font-size:17px;line-height:1.55}.calculator-help summary{cursor:pointer;font-weight:700}.calculator [data-results]{margin-top:28px;padding:24px;background:#eeece5}.calculator [hidden]{display:none}@media(max-width:767px){.calculator h2{font-size:30px}.calculator-inputs{grid-template-columns:1fr}.calculator [data-results]{padding:16px}.calculator-results{gap:0 16px}.calculator-results dd{font-size:25px}.calculator>p{font-size:17px}.masthead-note{display:none}}