@font-face{font-family:'IBM Plex Sans';src:url('/assets/fonts/ibm-plex-sans-400.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'IBM Plex Sans';src:url('/assets/fonts/ibm-plex-sans-500.woff2') format('woff2');font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:'IBM Plex Sans';src:url('/assets/fonts/ibm-plex-sans-600.woff2') format('woff2');font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:'IBM Plex Sans';src:url('/assets/fonts/ibm-plex-sans-700.woff2') format('woff2');font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:'IBM Plex Serif';src:url('/assets/fonts/ibm-plex-serif-400.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
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h3{font-size:20px;font-weight:500}.reading-grid p{font-size:14px;color:var(--muted);line-height:1.55}.reading-intro{font-size:21px!important}.reading-body{max-width:850px}.reading-body section{border-top:1px solid var(--line);padding:30px 0;margin-top:20px}.reading-body h2{font-size:31px;font-weight:500}.reading-body h3{font-size:21px;font-weight:500}.reading-body p,.reading-body li{font-size:17px;line-height:1.75;color:#344355}.reading-sub{padding:28px 0;border-top:1px solid #e1e5eb}.reading-sub h3{font-size:24px}.reading-sub p:last-child{color:var(--blue-dark)}.reading-question{background:#f5f7fa;margin:16px 0;padding:20px}.reading-question h3{margin:0 0 12px}.reading-question summary{color:var(--blue);cursor:pointer;font-weight:600;min-height:35px}.reading-next{display:flex;justify-content:space-between;gap:25px;margin-top:50px}.reading-next a{color:var(--blue);font-weight:600}@media(max-width:900px){.reading-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:600px){.reading-grid{grid-template-columns:1fr}.reading-page{padding-top:38px}.reading-body section{padding:22px 0}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.lesson-card{transition:none}}@media print{.site-header,.footer,.reading-next,.inline-cta{display:none!important}.reading-page{width:100%;color:#111}.reading-body p,.reading-body li{color:#111}.reading-sub{break-inside:avoid}}
.lesson-card-wrap{position:relative;min-width:0}.lesson-card-wrap .lesson-card{height:100%;padding-bottom:58px}.card-share,.share-button,.term-share,.share-link{border:1px solid var(--blue);background:#fff;color:var(--blue);font-weight:600;padding:9px 14px}.card-share{position:absolute;left:28px;bottom:18px;z-index:2}.card-share:hover,.share-button:hover,.term-share:hover,.share-link:hover{background:var(--blue);color:#fff}.lesson-title-row{display:flex;align-items:flex-start;justify-content:space-between;gap:24px}.lesson-title-row h1{margin-bottom:0}.share-button{flex:0 0 auto;margin-top:16px}.understanding{background:#f1f5ff;border:1px solid #b9cbf5;padding:32px}.understanding-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:24px}.understanding-grid section{background:#fff;border-top:4px solid var(--blue);padding:22px}.understanding-grid h3{margin-top:0}.understanding-grid li{margin:8px 0;line-height:1.55}.glossary-teaser{display:grid;grid-template-columns:1fr 1fr;gap:9vw;padding:100px 0;border-bottom:1px solid var(--line)}.glossary-teaser h2{font-size:clamp(36px,4vw,58px);font-weight:400;letter-spacing:-2px;margin:20px 0}.glossary-teaser p{font-size:18px;line-height:1.7;color:var(--muted)}.glossary-view{padding:70px 0 110px}.glossary-view>h1{font-size:clamp(44px,5vw,70px);font-weight:400;letter-spacing:-3px;max-width:850px}.glossary-search{max-width:640px;margin:34px 0 8px}.glossary-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:30px}.glossary-entry{border:1px solid var(--line);padding:28px;background:#fff;scroll-margin-top:90px}.glossary-entry:target{border-color:var(--blue);box-shadow:0 0 0 3px #dbe6ff}.glossary-title{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.glossary-title h2{font-size:25px;margin:0}.glossary-entry p{line-height:1.65;color:var(--muted)}.glossary-links{font-size:14px}.glossary-links a{color:var(--blue);font-weight:600}.term-share{padding:6px 10px}.share-link{display:inline-block;text-decoration:none;margin:16px 0}.item-title-row{display:flex;align-items:flex-start;justify-content:space-between;gap:18px}.item-title-row h3{margin-top:0}.item-share{border:1px solid var(--blue);background:#fff;color:var(--blue);font-weight:600;padding:6px 10px;flex:0 0 auto}.item-share:hover{background:var(--blue);color:#fff}.item-understanding{margin:22px 0;padding:22px;border-left:4px solid var(--blue);background:#f1f5ff}.item-understanding h4{font-size:18px;margin:0 0 14px}.item-understanding p{margin:10px 0}@media(max-width:760px){.lesson-title-row{display:block}.share-button{margin:0 0 18px}.understanding-grid,.glossary-grid,.glossary-teaser{grid-template-columns:1fr}.glossary-teaser{gap:20px;padding:70px 0}.card-share{left:20px}.glossary-view{padding-top:44px}}
.cookie-panel{position:fixed;left:16px;right:16px;bottom:16px;z-index:1000;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 18px;background:#fff;color:var(--ink);border:1px solid #b9c4d3;box-shadow:0 8px 30px rgba(16,29,47,.18)}.cookie-panel-copy{min-width:0}.cookie-panel h2{font-size:15px;margin:0 0 4px}.cookie-panel p{font-size:12px;line-height:1.45;margin:0;color:var(--muted)}.cookie-panel-links{margin-top:5px!important}.cookie-panel-links a{color:var(--blue);font-weight:600}.cookie-panel-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px;flex-wrap:wrap;flex:0 0 auto}.cookie-button{border:1px solid var(--blue);background:#fff;color:var(--blue);font-size:12px;font-weight:600;min-height:34px;padding:7px 11px}.cookie-button:hover{background:#edf3ff}.cookie-accept{background:var(--blue);color:#fff}.cookie-accept:hover{background:var(--blue-dark);color:#fff}.cookie-settings-link{position:fixed;left:14px;bottom:14px;z-index:998;border:1px solid #9cacbf;background:#fff;color:var(--ink);font-size:11px;font-weight:600;padding:7px 10px;box-shadow:0 3px 12px rgba(16,29,47,.12)}.cookie-preferences{position:fixed;inset:0;z-index:1001;display:grid;place-items:center;padding:20px;background:rgba(16,29,47,.45)}.cookie-preferences-card{width:min(500px,100%);background:#fff;color:var(--ink);padding:24px;box-shadow:0 10px 40px rgba(16,29,47,.28)}.cookie-preferences-head{display:flex;align-items:center;justify-content:space-between;gap:20px}.cookie-preferences h2{margin:0;font-size:22px}.cookie-preferences p{color:var(--muted);font-size:14px;line-height:1.55}.cookie-close{border:0;background:transparent;font-size:26px;color:var(--muted);line-height:1}.cookie-option{display:flex;justify-content:space-between;gap:20px;align-items:center;border-top:1px solid var(--line);padding:15px 0}.cookie-option span{display:flex;flex-direction:column;gap:3px}.cookie-option small{color:var(--muted);line-height:1.4}.cookie-option input{width:18px;height:18px}.cookie-preferences-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:14px}@media(max-width:700px){.cookie-panel{left:10px;right:10px;bottom:10px;display:block;padding:13px}.cookie-panel-actions{justify-content:stretch;margin-top:10px}.cookie-button{flex:1;min-width:0}.cookie-settings-link{bottom:8px;left:8px}.cookie-panel .cookie-settings-link{display:none}}

/* Comprehensive quiz */
.quiz-teaser{background:var(--navy);color:#fff}.quiz-teaser-grid{display:grid;grid-template-columns:1fr 1fr;gap:9vw;padding:86px 0}.quiz-teaser h2{font-size:clamp(36px,4vw,58px);font-weight:400;letter-spacing:-2px;line-height:1.12;margin:20px 0}.quiz-teaser p{color:#d8e1ee;font-size:18px;line-height:1.7;margin:8px 0 28px}.quiz-view{padding:70px 0 110px;min-height:70vh}.quiz-view>h1,.quiz-session-head h1{font-size:clamp(42px,5vw,68px);font-weight:400;letter-spacing:-3px;line-height:1.08;max-width:950px;margin:22px 0}.quiz-coverage{display:grid;grid-template-columns:repeat(4,1fr);margin:42px 0;border:1px solid var(--line)}.quiz-coverage div{padding:24px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:7px}.quiz-coverage div:last-child{border-right:0}.quiz-coverage strong{font-size:30px;color:var(--blue)}.quiz-coverage span{font-size:13px;color:var(--muted)}.quiz-setup{margin-top:52px}.quiz-setup-head,.quiz-session-head,.quiz-size-panel{display:flex;align-items:flex-start;justify-content:space-between;gap:24px}.quiz-setup-head h2,.quiz-size-panel h2{margin:0 0 8px;font-size:28px}.quiz-setup-head p,.quiz-size-panel p{margin:0;color:var(--muted);line-height:1.55}.primary-button,.secondary-button{border:1px solid var(--blue);min-height:46px;padding:11px 19px;font-weight:700}.primary-button{background:var(--blue);color:#fff}.primary-button:hover{background:var(--blue-dark)}.secondary-button{background:#fff;color:var(--blue)}.secondary-button:hover{background:var(--soft)}.primary-button:disabled,.secondary-button:disabled{cursor:not-allowed;opacity:.45}.quiz-module-group{border:0;padding:0;margin:38px 0}.quiz-module-group legend{font-size:13px;letter-spacing:1.4px;text-transform:uppercase;color:var(--blue);font-weight:700;margin-bottom:14px}.quiz-module-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.quiz-module-card{display:flex;gap:14px;align-items:flex-start;border:1px solid var(--line);padding:18px;cursor:pointer;min-width:0;background:#fff}.quiz-module-card:hover{border-color:var(--blue)}.quiz-module-card.selected{border-color:var(--blue);box-shadow:inset 4px 0 0 var(--blue);background:#f7f9ff}.quiz-module-card input{width:20px;height:20px;flex:0 0 auto;accent-color:var(--blue)}.quiz-module-card span{display:flex;min-width:0;flex-direction:column;gap:5px}.quiz-module-card strong{line-height:1.35}.quiz-module-card small{color:var(--muted);line-height:1.35}.quiz-size-panel{align-items:end;background:var(--soft);border-top:4px solid var(--blue);padding:28px;margin-top:44px}.quiz-size-panel label{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:700}.quiz-size-panel select{min-height:46px;border:1px solid #9aa8ba;background:#fff;padding:10px 38px 10px 12px}.quiz-privacy{color:var(--muted);font-size:13px;line-height:1.55}.form-error{color:#a21c1c;font-weight:600;min-height:20px}.quiz-session-head{align-items:center}.quiz-meters{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:35px 0}.quiz-meters section{border:1px solid var(--line);padding:20px}.quiz-meters section>div:first-child{display:flex;justify-content:space-between;gap:20px}.quiz-meters strong{font-size:24px;color:var(--blue)}.quiz-meters small{display:block;color:var(--muted);margin-top:9px}.meter{height:10px;background:#e1e6ec;margin-top:12px;overflow:hidden}.meter span{display:block;height:100%;background:var(--blue);transition:width .25s ease}.meter.score span{background:#16855b}.quiz-question{border:1px solid var(--line);padding:clamp(24px,4vw,48px);box-shadow:0 14px 40px rgba(17,32,50,.08)}.quiz-question-meta{display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:13px;padding-bottom:18px;border-bottom:1px solid var(--line)}.quiz-question fieldset{border:0;padding:0;margin:30px 0}.quiz-question legend{font-size:clamp(23px,3vw,34px);line-height:1.35;font-weight:500;max-width:900px;margin-bottom:26px}.quiz-options{display:grid;gap:12px}.quiz-option{display:grid;grid-template-columns:auto auto 1fr;align-items:start;gap:14px;border:1px solid #b8c1cc;padding:17px;cursor:pointer;line-height:1.55}.quiz-option:hover{border-color:var(--blue);background:#f7f9ff}.quiz-option input{width:20px;height:20px;margin-top:3px;accent-color:var(--blue)}.option-letter{display:grid;place-items:center;width:27px;height:27px;background:var(--soft);color:var(--blue);font-weight:700}.quiz-option.correct-option{border-color:#16855b;background:#effaf5}.quiz-option.incorrect-option{border-color:#b42a2a;background:#fff3f2}.quiz-answer-feedback{margin:24px 0 0;padding:20px;border-left:5px solid var(--blue);background:var(--soft);line-height:1.6}.quiz-answer-feedback.correct{border-color:#16855b;background:#effaf5}.quiz-answer-feedback.incorrect{border-color:#b42a2a;background:#fff3f2}.quiz-answer-feedback p{margin:7px 0 0}.quiz-controls{display:flex;justify-content:space-between;gap:16px;margin:22px 0}.quiz-navigator{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:7px;margin-top:28px}.quiz-navigator button{width:38px;height:38px;border:1px solid var(--line);background:#fff}.quiz-navigator button.answered{border-color:var(--blue);color:var(--blue);font-weight:700}.quiz-navigator button.current{background:var(--blue);color:#fff}.quiz-result-hero{display:grid;grid-template-columns:minmax(260px,.7fr) 1fr;background:var(--navy);color:#fff;margin:30px 0;padding:44px}.quiz-result-hero h1{font-size:clamp(70px,10vw,130px);line-height:.9;margin:0;color:#fff;font-weight:400;letter-spacing:-6px}.quiz-result-hero p{margin:15px 0 0;color:#cbd8ea}.quiz-result-hero>div:last-child{border-left:1px solid #526077;padding-left:42px;display:flex;flex-direction:column;justify-content:center;gap:10px}.quiz-result-hero>div:last-child strong{font-size:28px}.quiz-result-hero>div:last-child span{color:#cbd8ea}.result-actions{display:flex;gap:12px;flex-wrap:wrap;margin:30px 0}.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:40px}.result-grid section{border:1px solid var(--line);padding:25px;overflow:auto}.result-grid h2{margin-top:0}.result-grid table{width:100%;border-collapse:collapse;text-align:left}.result-grid th,.result-grid td{padding:11px 8px;border-top:1px solid var(--line)}.result-grid thead th{border-top:0;color:var(--muted);font-size:13px}.missed-review{margin-top:55px}.missed-review>article{padding:25px 0;border-top:1px solid var(--line)}.missed-review h3{font-size:21px;line-height:1.4;margin:10px 0}.missed-review p{line-height:1.65;color:var(--muted)}
@media(max-width:980px){.nav{gap:20px}.nav nav{gap:15px}.header-action{display:none}.quiz-module-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:700px){.quiz-teaser-grid,.quiz-coverage,.quiz-meters,.quiz-result-hero,.result-grid{grid-template-columns:1fr}.quiz-teaser-grid{padding:62px 0}.quiz-view{padding:46px 0 80px}.quiz-coverage div{border-right:0;border-bottom:1px solid var(--line)}.quiz-coverage div:last-child{border-bottom:0}.quiz-module-grid{grid-template-columns:1fr}.quiz-setup-head,.quiz-session-head,.quiz-size-panel{align-items:stretch;flex-direction:column}.quiz-size-panel label,.quiz-size-panel select,.quiz-size-panel .primary-button{width:100%}.quiz-question{padding:22px 17px}.quiz-question-meta{flex-direction:column;gap:7px}.quiz-option{grid-template-columns:auto 1fr}.quiz-option input{grid-row:1 / span 2}.quiz-result-hero{padding:30px}.quiz-result-hero>div:last-child{border-left:0;border-top:1px solid #526077;padding:25px 0 0}.quiz-result-hero h1{letter-spacing:-4px}.quiz-controls button{flex:1}.quiz-session-head h1{margin-bottom:0}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.meter span{transition:none}}

/* SEO content engine */
.breadcrumbs{display:flex;gap:9px;align-items:center;flex-wrap:wrap;margin:8px 0 42px;color:var(--muted);font-size:14px}.breadcrumbs a{color:var(--blue)}.seo-article{max-width:900px}.seo-article>h1{font-size:clamp(42px,6vw,72px);font-weight:400;letter-spacing:-3px;line-height:1.07;margin:18px 0 24px}.article-review{font-size:13px;color:var(--muted)}.article-toc{margin:34px 0;padding:24px 28px;border-left:4px solid var(--blue);background:var(--soft)}.article-toc strong{display:block;margin-bottom:10px}.article-toc ol{margin:0;padding-left:22px}.article-toc li{margin:8px 0}.article-toc a{color:var(--blue)}.article-body h2,.article-sources h2,.related-articles>h2{font-size:32px;font-weight:500;letter-spacing:-1px;margin:52px 0 18px;scroll-margin-top:100px}.article-body h3{font-size:23px;margin:34px 0 14px;scroll-margin-top:100px}.article-body p,.article-body li,.article-sources li{font-size:17px;line-height:1.75}.article-body li{margin:8px 0}.article-body code{background:#eef2f8;padding:2px 5px}.article-note{border:1px solid #b9cbf5;background:#f1f5ff;padding:20px 24px;line-height:1.65;margin:28px 0}.article-sources{overflow-wrap:anywhere}.related-articles{margin-top:70px;padding-top:20px;border-top:1px solid var(--line)}.table-scroll{overflow-x:auto}.article-body table{border-collapse:collapse;width:100%;margin:24px 0}.article-body th,.article-body td{border:1px solid var(--line);padding:12px;text-align:left}.calculator-card{margin:38px 0;padding:28px;border:1px solid #b9cbf5;background:#f5f8ff}.calculator-card h2{margin:0 0 24px;font-size:28px}.calculator-card form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.calculator-card label{display:flex;flex-direction:column;gap:8px;font-weight:600}.calculator-card input,.calculator-card textarea{width:100%;border:1px solid #aeb9c7;background:#fff;padding:12px;font:inherit}.calculator-card textarea{resize:vertical}.calculator-card button{border:1px solid var(--blue);background:var(--blue);color:#fff;font-weight:700;padding:12px 18px}.calculator-card button.secondary{background:#fff;color:var(--blue)}.calculator-result{margin-top:22px;padding:18px;background:#fff;border-left:4px solid var(--blue);line-height:1.55}.calculator-result.error{border-color:#b42318;color:#8a1c13}.calculator-result dl{margin:0}.calculator-result dl div{display:flex;justify-content:space-between;gap:20px;padding:8px 0;border-bottom:1px solid var(--line)}.calculator-result dt{font-weight:600}.calculator-result dd{margin:0;font-variant-numeric:tabular-nums}.article-search-field{display:block;max-width:760px;margin:32px 0}.article-search-field input{width:100%;padding:15px;border:1px solid var(--line)}
@media(max-width:700px){.seo-article>h1{letter-spacing:-2px}.calculator-card form{grid-template-columns:1fr}.calculator-card{padding:20px}.calculator-result dl div{display:block}.calculator-result dd{margin-top:4px}.breadcrumbs{margin-bottom:28px}}