:root{--navy:#1b3a6b;--deep:#142b50;--green:#167a50;--pink:#c0395b;--gold:#c9a961;--ink:#1a1f2c;--muted:#566277;--mist:#f5f7fb;--line:#e5e9f2}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;color:var(--ink);background:#fff;font:17px/1.75 Inter,Arial,sans-serif;-webkit-font-smoothing:antialiased}h1,h2,h3{font-family:'Playfair Display',Georgia,serif;color:var(--navy);line-height:1.2}h2{font-size:clamp(28px,3vw,37px);margin:9px 0 22px}h3{font-size:24px}a{color:var(--pink);text-underline-offset:4px}a:hover{text-decoration-thickness:2px}a:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--pink);outline-offset:5px}p{margin:0 0 20px}img{max-width:100%;height:auto}.wide{width:min(1180px,100%);margin:auto;padding:0 30px}.skip{position:absolute;top:-100px;left:12px;background:white;padding:10px;z-index:50}.skip:focus{top:12px}.hero{background:linear-gradient(120deg,var(--navy),var(--deep));color:#fff;padding:25px 0 52px}.breadcrumbs{display:flex;gap:12px;flex-wrap:wrap;font-size:13px;color:#d3ddec;margin-bottom:30px}.breadcrumbs a{color:inherit}.hero-grid{display:grid;grid-template-columns:1fr 310px;gap:75px;align-items:center}.eyebrow{font:700 12px/1.6 Inter,Arial,sans-serif;text-transform:uppercase;letter-spacing:.14em;color:var(--pink);margin:0 0 13px}.hero .eyebrow,.book-feature .eyebrow{color:#e5c781}.hero h1{color:#fff;font-size:clamp(42px,4.6vw,64px);letter-spacing:-.02em;margin:0 0 22px}.deck{font-size:22px;font-weight:600;margin-bottom:15px;color:#fff}.intro{color:#dde5f1;font-size:18px;max-width:670px}.byline{font-size:13px;color:#c6d3e5}.byline a{color:inherit}.buttons{display:flex;gap:18px;align-items:center;flex-wrap:wrap;margin-top:26px}.button{display:inline-block;padding:13px 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8px 18px;max-width:1000px}.top-three{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin:32px 0 12px}.pick{background:var(--mist);padding:28px;border-top:3px solid var(--navy);position:relative}.pick.featured{background:#edf7f1;border-color:var(--green)}.pick-number{display:block;font:700 40px/1 Georgia,serif;color:#92a2ba;margin-bottom:24px}.featured .pick-number{color:var(--green)}.pick-for{font-size:12px;text-transform:uppercase;letter-spacing:.05em;font-weight:700;color:var(--muted);margin-bottom:12px}.pick h3{margin:0 0 10px}.author{display:block;font-size:14px;font-weight:400;color:var(--muted);margin-top:9px}.pick p:not(.author):not(.pick-for){font-size:16px;line-height:1.7}.pick a{font-size:14px;font-weight:700}.table-wrap{margin:28px 0 16px;overflow-x:auto;border:1px solid var(--line);border-radius:8px}table{border-collapse:collapse;width:100%;min-width:850px;font-size:15px;line-height:1.65}caption{text-align:left;padding:15px 20px;background:var(--mist);font-size:14px;color:var(--muted)}thead th{background:var(--navy);color:#fff;font:600 13px/1.5 Inter,Arial,sans-serif}td,th{padding:22px 18px;vertical-align:top;text-align:left;border-bottom:1px solid var(--line)}tbody tr:nth-child(even){background:#fafbfd}tbody tr:last-child td,tbody tr:last-child th{border-bottom:0}tbody th{width:23%;font-size:17px;line-height:1.45}tbody th a{color:var(--navy)}td:nth-child(3){width:22%}.rank{font:700 24px Georgia,serif;color:var(--navy);width:6%}.level{display:block;color:var(--muted);font-size:13px;margin-top:10px}td p{margin:0 0 12px}.consider{font-size:14px;color:var(--muted)}.featured-row{background:#edf7f1!important}.featured-row .rank{border-left:4px solid var(--green);color:var(--green)}.tag{display:inline-block;margin-top:12px;background:#d3eadc;color:#175837;padding:4px 8px;border-radius:4px;font-size:12px}.row-link{font-weight:600;font-size:14px}.source-note{font-size:14px;color:var(--muted)}.reading-width{max-width:800px;margin-left:auto;margin-right:auto}.choice-list{padding-left:22px}.choice-list li{padding:0 0 18px 7px}.choice-list strong{display:block;color:var(--navy)}.book-feature{background:var(--deep);color:#e2eaf5;border-radius:12px;padding:38px;margin:40px 0 8px;display:grid;grid-template-columns:200px 1fr;gap:42px;align-items:center}.book-feature img{box-shadow:8px 12px 25px #0005}.book-feature h2{color:white}.book-feature p{font-size:16px}.book-feature .eyebrow{font-size:12px}.faq{padding-bottom:70px}.faq-item{padding:24px 0;border-bottom:1px solid var(--line)}.faq-item h3{font-size:22px;margin:0 0 14px}.faq-item p{margin:0;font-size:16px}@media(max-width:950px){.hero-grid{gap:35px;grid-template-columns:1fr 235px}.hero-book img{width:205px}.top-three{gap:14px}.pick{padding:21px}}@media(max-width:700px){.wide{padding:0 20px}.hero{padding:20px 0 38px}.hero-grid{grid-template-columns:1fr;gap:30px}.hero h1{font-size:42px}.hero-book{display:none}.deck{font-size:20px}.intro{font-size:17px}.top-three{grid-template-columns:1fr}.pick{padding:25px}.pick-number{font-size:34px;margin-bottom:18px}.section{padding-top:35px}.lead{font-size:18px}.book-feature{grid-template-columns:1fr;padding:27px;gap:28px}.book-feature img{width:145px}.buttons{align-items:flex-start;flex-direction:column;gap:14px}.jump-links{gap:11px 20px;font-size:13px}.book-feature h2{font-size:30px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media print{.site-header,.jump-links,.buttons,.hero{background:#fff;color:#111}.hero h1,.hero p,.hero a{color:#111}.hero-book{display:none}.hero-grid{display:block}.wide{padding:0}.table-wrap{overflow:visible}table{min-width:0;font-size:10px}td,th{padding:8px}h2,h3{break-after:avoid}.pick,.faq-item{break-inside:avoid}}
.table-help{display:none}@media(max-width:850px){.table-help{display:block;color:var(--muted);font-size:14px;margin:20px 0 -10px}}

/* Circus header */
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.circus-hero{padding:22px 0 30px}.circus-hero>.wide{max-width:1500px;padding:0 24px}.circus-hero .breadcrumbs{max-width:1120px;margin:0 auto 20px}.circus-banner{margin:0 auto 28px}.circus-banner img{display:block;width:100%;height:auto;border:1px solid #c9a96166;border-radius:9px;box-shadow:0 12px 38px #0003}.circus-hero .hero-grid{display:block;max-width:1040px;margin:auto;text-align:center}.circus-hero .hero-grid .eyebrow{display:none}.circus-hero .deck{font-size:22px;margin:0 0 10px}.circus-hero .intro{max-width:870px;margin:0 auto 13px;font-size:17px}.circus-hero .byline{margin:0 0 15px}.circus-hero .buttons{justify-content:center;margin-top:18px}
@media(max-width:700px){.circus-hero{padding-top:16px}.circus-hero>.wide{padding:0 12px}.circus-hero .breadcrumbs{padding:0 8px;font-size:12px;gap:8px;margin-bottom:16px}.circus-banner{margin-bottom:23px}.circus-banner img{border-radius:4px}.circus-hero .hero-grid{padding:0 8px}.circus-hero .deck{font-size:20px}.circus-hero .intro{font-size:16px}.circus-hero .buttons{align-items:center}}
@media print{.circus-banner{display:block}.circus-hero .visually-hidden{position:static!important;width:auto;height:auto;clip-path:none;white-space:normal;margin:10px 0}.circus-hero .hero-grid{text-align:left}}
/* Supporting category charts */ .category-intro{margin-top:35px;padding:30px;border:1px solid var(--line);border-top:4px solid var(--gold);background:var(--mist);border-radius:10px}.category-intro .disclosure{margin-bottom:0}.category-nav{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:24px 0}.category-nav a{display:flex;align-items:center;justify-content:center;text-align:center;min-height:58px;background:var(--navy);color:white;border-radius:7px;padding:12px;font-size:14px;font-weight:700;text-decoration:none}.category-nav a:hover{background:var(--deep)}.category-deck{max-width:970px}.category-chart tbody th{width:29%}.category-chart td:nth-child(3){width:21%}.category-chart .rank{width:7%}.category-chart table{min-width:760px}.category-chart td p:last-child{margin-bottom:0}.category-back{font-size:14px;font-weight:600}.category-chart{padding-bottom:10px}.category-intro h2{max-width:800px}@media(max-width:700px){.category-intro{padding:22px}.category-nav{grid-template-columns:1fr 1fr}.category-nav a{font-size:13px}.category-chart table{min-width:720px}}

/* Site-wide header and footer, matching the other AI Learning Hub articles */
:root{--navy2:#142b50;--green-h:#11613f;--paper:#fff}
.site-header{position:sticky;top:0;z-index:40;background:#fffffff5;backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}.hdr-inner{max-width:1180px;margin:0 auto;padding:12px 22px;display:flex;align-items:center;gap:16px}.brand{display:flex;align-items:center;gap:11px;text-decoration:none;flex:0 0 auto}.brand img{width:42px;height:42px;border-radius:50%;display:block}.brand-txt{display:flex;flex-direction:column;line-height:1.05}.brand-name{font-family:'Playfair Display',serif;font-weight:700;color:var(--navy);font-size:18px}.brand-name em{font-style:italic}.brand-tag{font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--pink);font-weight:700}.nav{margin-left:auto;display:flex;align-items:center;gap:7px;flex-wrap:wrap;justify-content:flex-end}.nav a{font-family:Inter,sans-serif;font-size:13.5px;font-weight:600;color:var(--navy);text-decoration:none;padding:8px 13px;border-radius:50px}.nav a:hover{background:var(--mist)}.nav a.cta{background:var(--green);color:#fff;border:2px solid var(--green)}.nav a.cta:hover{background:var(--green-h);border-color:var(--green-h)}.hamburger{display:none;margin-left:auto;background:none;border:0;font-size:26px;color:var(--navy);cursor:pointer}
@media(max-width:940px){.nav{display:none;width:100%;flex-direction:column;align-items:stretch;gap:4px;padding-top:10px}.nav.open{display:flex}.nav a{padding:11px 13px}.hamburger{display:block}.hdr-inner{flex-wrap:wrap}}
.site-footer{background:var(--navy2);color:#c8d2e6;margin-top:48px;padding:42px 22px 26px;font-size:14px;line-height:1.6}.ft-inner{max-width:1080px;margin:0 auto;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1fr;gap:26px}.site-footer h3{color:#fff;font-family:Inter,sans-serif;font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;margin:0 0 12px}.site-footer a{color:#c8d2e6;text-decoration:none;font-size:14px;display:block;margin-bottom:8px}.site-footer a:hover{color:#fff}.ft-shop-row{max-width:1080px;margin:26px auto 0}.ft-shop{display:inline-flex!important;align-items:center;gap:8px;margin:0!important;padding:10px 18px;border-radius:999px;background:#1e9e6a;color:#fff!important;font-size:13.5px;font-weight:700;line-height:1.2}.ft-shop:hover{background:#178355}.ft-brand img{width:44px;height:44px;border-radius:50%}.ft-brand p{font-size:13.5px;margin:10px 0 0}.ft-social{display:flex;flex-wrap:wrap;gap:12px;margin-top:12px}.ft-social a{font-size:13px}.ft-base{max-width:1080px;margin:26px auto 0;padding-top:16px;border-top:1px solid rgba(255,255,255,.14);font-size:12.5px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}.ft-base a{display:inline}
@media(max-width:1000px){.ft-inner{grid-template-columns:1.4fr 1fr 1fr}}@media(max-width:820px){.ft-inner{grid-template-columns:1fr 1fr}}@media(max-width:520px){.ft-inner{grid-template-columns:1fr}}

/* Visible H1 beneath the circus artwork */
.circus-hero h1{color:#fff;font-size:clamp(34px,4.4vw,56px);letter-spacing:-.02em;margin:0 0 14px}
@media(max-width:700px){.circus-hero h1{font-size:34px}}

/* Quick answer: the full top 10 as a plain ordered list */
.quick-list{margin:34px 0 8px;padding:26px 30px;background:#fff;border:1px solid var(--line);border-left:4px solid var(--gold);border-radius:8px}.quick-list h3{margin:0 0 12px;font-size:22px}.quick-list ol{margin:0;padding-left:24px;columns:2;column-gap:40px}.quick-list li{break-inside:avoid;padding:0 0 8px;font-size:16px;line-height:1.55}.quick-list li span{color:var(--muted)}
@media(max-width:700px){.quick-list{padding:22px}.quick-list ol{columns:1}}

/* Category charts are H3s beneath the category H2 */
.category-chart h3{font-size:clamp(26px,2.7vw,33px);margin:9px 0 18px}

/* Method sub-sections and grouped FAQs */
.reading-width h3{font-size:22px;margin:28px 0 10px}.faq-group{margin-top:34px}.faq-group>h3{font-size:24px;margin:0 0 4px;padding-bottom:8px;border-bottom:2px solid var(--navy)}.faq-item h4{font-family:'Playfair Display',Georgia,serif;color:var(--navy);font-size:21px;line-height:1.3;margin:0 0 12px}

/* Keep learning: related guides and training */
.keep-learning{background:var(--mist);border-radius:12px;padding:38px;margin:10px 0 0}.keep-learning h2{margin-top:0}.keep-learning h3{font-size:22px;margin:26px 0 12px}.related-links{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:8px 30px}.related-links li{font-size:16px}.related-links a{font-weight:600;color:var(--navy)}.training-links{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.training-link{background:#fff;border:1px solid var(--line);border-top:3px solid var(--green);border-radius:8px;padding:18px}.training-link h4{font:700 17px/1.3 'Playfair Display',Georgia,serif;color:var(--navy);margin:0 0 8px}.training-link p{font-size:14.5px;line-height:1.6;margin:0 0 10px}.training-link a{font-size:14px;font-weight:700}
@media(max-width:900px){.training-links{grid-template-columns:1fr 1fr}}@media(max-width:640px){.keep-learning{padding:24px}.related-links,.training-links{grid-template-columns:1fr}}