:root{color-scheme:light;--bg:#fff;--ink:#0f0f0f;--muted:#606060;--line:#e5e5e5;--soft:#f2f2f2;--accent:#f00;--blue:#065fd4;--on-ink:#fff;--radius:10px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
a{color:inherit;text-decoration:none}
button,input,select{font:inherit}
button,a,input,select{touch-action:manipulation}
button{cursor:pointer}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:4px}
button{border:0}
header{height:78px;border-bottom:1px solid var(--line);background:var(--bg);position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:35px;padding:0 32px}
.logo{display:flex;gap:10px;align-items:center;font-size:24px;font-weight:780;letter-spacing:-1px;white-space:nowrap}
.logo small{font-size:11px;letter-spacing:0;color:var(--muted);font-weight:500;margin-left:-5px;align-self:flex-end;margin-bottom:5px}
.mark{display:block;width:36px;height:auto;aspect-ratio:72/50;flex-shrink:0}
.search{max-width:580px;display:flex;flex:1;height:41px;border:1px solid var(--line);border-radius:24px;overflow:hidden;margin:auto}
.search input{min-width:0;flex:1;border:0;background:var(--bg);padding:0 16px;color:var(--ink)}
.search button{background:var(--soft);color:var(--ink);border-left:1px solid var(--line);width:49px;font-size:22px}
.top-link{font-size:13px;color:var(--muted)}
.mobile-menu{display:none;background:var(--soft);color:var(--ink);font-size:22px;padding:3px 10px;border-radius:6px}
.rail{position:fixed;top:78px;bottom:0;width:220px;background:var(--bg);color:var(--ink);z-index:25;padding:29px 17px;overflow:auto}
.rail a{display:flex;align-items:center;gap:14px;font-size:14px;padding:11px 15px;border-radius:7px;margin-bottom:5px}
.rail a:hover{background:var(--soft);color:var(--ink)}
.rail a.active{background:var(--soft);color:var(--ink);font-weight:650}
.navicon{font-size:19px;width:20px;text-align:center}
.rail hr{border:0;border-top:1px solid var(--line);margin:23px 8px}
.rail p{font-size:12px;padding:0 15px;color:var(--muted)}
.rail .topic-link{font-size:13px;padding:8px 15px}
.rail-note{padding:24px 15px!important;font-size:12px!important;line-height:1.8}
.rail-note a{display:inline;padding:0;font-size:12px;color:var(--muted);text-decoration:underline;text-underline-offset:3px}
.main{margin-left:220px;padding:34px 38px 0;max-width:1820px}
.intro{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;padding:0 0 25px}
.intro h1{font-size:32px;line-height:1.2;letter-spacing:-1px;margin:0 0 10px;font-weight:750}
.intro p{color:var(--muted);margin:0;max-width:690px;font-size:14px}
.count{font-size:12px;white-space:nowrap;text-align:right;color:var(--muted);padding-bottom:3px}
.count strong{display:block;font-size:23px;letter-spacing:-.5px;color:var(--ink)}
.chips{display:flex;gap:9px;overflow:auto;padding:0 0 24px;scrollbar-width:none}
.chip{background:var(--soft);padding:7px 15px;border:1px solid var(--line);border-radius:7px;white-space:nowrap;font-size:13px}
.chip.active{background:var(--ink);color:var(--on-ink);border-color:var(--ink);font-weight:650}
.featured{display:grid;grid-template-columns:1.1fr 1fr;gap:25px;background:var(--soft);color:var(--ink);border:1px solid var(--line);border-radius:12px;padding:16px;margin-bottom:34px}
.featured .thumb{margin:0;aspect-ratio:16/9;border-radius:7px}
.featured-copy{display:flex;flex-direction:column;justify-content:center;padding:8px 22px 8px 0}
.eyebrow{font-size:12px;color:var(--muted);margin:0 0 10px;display:flex;align-items:center;gap:8px}
.eyebrow:before{content:'';height:7px;width:7px;border-radius:50%;background:var(--accent)}
.featured h2{font-size:28px;line-height:1.2;letter-spacing:-.6px;margin:0 0 13px}
.featured p{color:var(--muted);font-size:14px;margin:0 0 14px}
.featured .byline{font-size:12px}
.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:7px;padding:10px 16px;background:var(--ink);color:var(--on-ink);font-size:13px;font-weight:600}
.button.light{background:var(--soft);color:var(--ink);border:1px solid var(--line)}
.featured .button{background:var(--accent);color:#fff;align-self:flex-start;margin-top:4px;font-size:19px;font-weight:700}
.section-head{display:flex;align-items:center;justify-content:space-between;margin:26px 0 18px;gap:20px}
.section-head h2{margin:0;font-size:20px;letter-spacing:-.4px}
.section-head p{font-size:12px;color:var(--muted);margin:3px 0 0}
.section-head a{font-size:12px;color:var(--blue)}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px 20px}
.card{min-width:0;position:relative}
.thumb{display:block;background:var(--soft);aspect-ratio:16/9;overflow:hidden;border-radius:9px;position:relative;margin-bottom:11px}
.thumb img{display:block;width:100%;height:100%;object-fit:cover}
.thumb:after{content:'▶';display:grid;place-items:center;background:#000b;border-radius:50%;width:42px;height:42px;position:absolute;left:calc(50% - 21px);top:calc(50% - 21px);color:#fff;opacity:0;transition:opacity .15s}
.thumb:hover:after{opacity:1}
.type{position:absolute;bottom:8px;right:8px;background:#000d;color:#fff;font-size:10px;border-radius:3px;padding:2px 6px}
.card h3{font-size:15px;line-height:1.4;margin:0 30px 7px 0;font-weight:650;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card h3 a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px}
.byline,.context{font-size:12px;line-height:1.55;color:var(--muted)}
.context{color:var(--muted);font-size:11px;margin-top:3px}
.save{background:var(--soft);border:1px solid var(--line);color:var(--muted);position:absolute;right:0;bottom:35px;height:29px;width:29px;border-radius:50%;font-size:19px;line-height:1}
.save[aria-pressed=true]{background:var(--ink);color:var(--on-ink);border-color:var(--ink)}
.explainer{margin-top:46px;border-top:1px solid var(--line);padding:28px 0;display:grid;grid-template-columns:1fr 1fr;gap:35px}
.explainer h2{font-size:21px;line-height:1.3;margin:0 0 12px;letter-spacing:-.4px}
.explainer h3{font-size:15px;margin:18px 0 7px}
.explainer p,.prose p,.prose li{font-size:14px;color:var(--muted);line-height:1.8}
.explainer a,.prose a,.credits a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}
.faq{border-top:1px solid var(--line);padding:25px 0}
.faq h2{font-size:20px}
.faq details{border-bottom:1px solid var(--line);padding:14px 0}
.faq summary{cursor:pointer;font-weight:600;font-size:14px}
.faq details p{font-size:14px;color:var(--muted);max-width:780px}
.faq summary h3{display:inline;font:inherit;margin:0}
.explainer ol{padding-left:22px}
.explainer li{font-size:14px;color:var(--muted);line-height:1.8;margin:7px 0}
.topic-table{max-width:100%;margin:12px 0 14px}
.topic-table table{width:100%;border-collapse:collapse;table-layout:fixed;font-size:13px;line-height:1.6;text-align:left}
.topic-table caption{text-align:left;font-weight:600;padding-bottom:9px}
.topic-table th,.topic-table td{padding:10px 9px;border:1px solid var(--line);vertical-align:top;overflow-wrap:anywhere}
.topic-table thead{background:var(--soft)}
.topic-table tbody th{font-weight:500;width:50%}
.topic-table td{color:var(--muted)}
.source-note{border-top:1px solid var(--line);padding:24px 0;max-width:860px}
.source-note h2{font-size:20px;margin:0 0 12px}
.source-note p,.source-note cite{font-size:14px;color:var(--muted);line-height:1.8}
.source-note .editor-credit{font-size:12px}
.source-note a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}
.source-note blockquote{margin:18px 0 0;border-left:3px solid var(--line);padding:0 0 0 16px}
.source-note blockquote p{margin:0 0 8px}
.source-note cite{font-size:12px;font-style:normal}
.footer{border-top:1px solid var(--line);padding:24px 0 30px;display:flex;gap:20px;justify-content:space-between;color:var(--muted);font-size:11px}
.footer nav{display:flex;gap:17px}
.breadcrumb{color:var(--muted);font-size:12px;margin-bottom:18px}
.watch-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:30px}
.player{aspect-ratio:16/9;background:#000;border-radius:10px;overflow:hidden;position:relative}
.player img{width:100%;height:100%;object-fit:cover;opacity:.7}
.player button{position:absolute;inset:0;color:white;background:transparent;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:12px;font-size:15px;text-shadow:0 1px 5px #000}
.player button span{background:var(--accent);color:#fff;text-shadow:none;width:65px;height:48px;border-radius:12px;display:grid;place-items:center;font-size:22px;padding-left:3px}
.player iframe{width:100%;height:100%;border:0}
.watch-title{font-size:25px;line-height:1.3;letter-spacing:-.5px;margin:20px 0 12px}
.watch-actions{display:flex;justify-content:space-between;gap:15px;align-items:center;margin-bottom:22px}
.watch-actions .save{position:static;border-radius:7px;width:auto;height:auto;font-size:13px;padding:9px 15px}
.description{background:var(--soft);padding:22px;border-radius:10px;font-size:14px;margin-bottom:30px}
.description h2{font-size:16px;margin:15px 0 8px}
.description h2:first-child{margin-top:0}
.description p{color:var(--muted);margin:5px 0 12px}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tags a{color:var(--blue);font-size:12px}
.comment{border-top:1px solid var(--line);padding:18px 0}
.comment-head{color:var(--muted);font-size:12px}
.comment p{white-space:pre-line;overflow-wrap:anywhere;font-size:14px;line-height:1.75}
.comment a{font-size:12px;color:var(--blue)}
.recommend .grid{grid-template-columns:1fr;gap:25px}
.recommend h2{font-size:17px;margin:0 0 18px}
.recommend .card h3{font-size:13px}
.prose{max-width:860px;padding-bottom:40px}
.prose h1{font-size:34px;letter-spacing:-1px}
.prose h2{margin-top:30px;font-size:22px}
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}
.topic-card{border:1px solid var(--line);border-radius:8px;padding:18px}
.topic-card:hover{background:var(--soft)}
.topic-card strong{display:block;font-size:14px}
.topic-card span{font-size:12px;color:var(--muted)}
.empty{padding:60px 25px;text-align:center;background:var(--soft);border-radius:10px}
.loadmore{display:block;margin:28px auto;background:var(--soft);border:1px solid var(--line);padding:11px 25px;border-radius:7px}
.loading{padding:30px;color:var(--muted)}
.toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:var(--ink);color:var(--on-ink);border-radius:8px;padding:12px 24px;z-index:60}
.skip{position:absolute;top:-100px}
.skip:focus{top:5px;background:var(--bg);color:var(--ink);z-index:100;padding:12px}
body.dark{color-scheme:dark;--bg:#0f0f0f;--ink:#f1f1f1;--muted:#aaa;--line:#3f3f3f;--soft:#272727;--blue:#3ea6ff;--on-ink:#0f0f0f}
#theme{background:var(--soft);color:var(--ink);padding:7px 11px;border-radius:6px;font-size:18px}


/* YouTube interface palette: matching canvas/navigation, neutral controls, red playback, blue links. */
.search:focus-within{border-color:var(--blue);box-shadow:0 0 0 1px var(--blue)}

.search input:focus-visible{outline:0}

.search input::placeholder{color:var(--muted);opacity:1}

.search button:hover{background:var(--line);color:var(--ink)}

.logo:hover .mark{filter:brightness(.96)}

.chip:hover:not(.active){background:var(--line);border-color:var(--line)}

.featured .byline{color:var(--muted)}

.featured .feature-details{color:var(--blue)}

.featured a:focus-visible,.featured button:focus-visible,.rail a:focus-visible{outline-color:var(--blue)}

.featured .button:hover{background:#c00}

.featured .feature-details:hover{text-decoration:underline;text-underline-offset:3px}

.button:not(.light):not(:disabled):hover{filter:brightness(.95)}

.save:hover{border-color:var(--blue);color:var(--blue)}

.save[aria-pressed=true]:hover{color:var(--on-ink);border-color:var(--ink)}

.topic-card:hover{border-color:var(--blue)}

.section-head select{background:var(--soft);color:var(--ink);border:1px solid var(--line);border-radius:6px;padding:6px 9px}

.footer a:hover,.breadcrumb a:hover{color:var(--blue)}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}
.rail,.thumb:after{transition:none}
}


@media(min-width:1600px){.grid{grid-template-columns:repeat(4,minmax(0,1fr))}
}
@media(max-width:1180px){.rail{width:190px}
.main{margin-left:190px;padding:28px 25px 0}
.featured h2{font-size:23px}
.featured-copy{padding-right:3px}
.featured p{font-size:13px}
.grid{gap:24px 16px}
.watch-layout{grid-template-columns:1fr}
.recommend .grid{grid-template-columns:repeat(3,1fr)}
.top-link{display:none}
.topic-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:850px){header{height:68px;padding:0 20px;gap:15px}
.logo{font-size:22px}
.rail{top:68px;transform:translateX(-100%);width:220px;transition:transform .15s}
.rail.open{transform:translateX(0);box-shadow:8px 0 30px #0003}
.main{margin-left:0}
.mobile-menu{display:block}
.search{max-width:none}
.featured{gap:18px}
.featured h2{font-size:23px}
.count{display:none}
}
@media(max-width:600px){header{height:auto;min-height:65px;flex-wrap:wrap;padding:14px 17px 12px;gap:10px}
.logo{font-size:22px;margin-right:auto}
.logo small{display:none}
.mark{width:32px;height:auto}
.mobile-menu{font-size:20px;order:-1}
.search{order:5;flex-basis:100%;height:37px;margin-top:2px}
.search input{font-size:14px}
.rail{top:115px}
.main{padding:25px 18px 0}
.intro h1{font-size:27px}
.intro{padding-bottom:20px}
.intro p{font-size:13px}
.chips{padding-bottom:20px;gap:7px}
.chip{font-size:12px;padding:6px 11px}
.featured{display:block;padding:11px;border-radius:10px;margin-bottom:28px}
.featured-copy{padding:17px 6px 7px}
.featured h2{font-size:23px;margin-bottom:10px}
.featured p{font-size:13px}
.featured .button{margin-top:8px}
.eyebrow{font-size:11px;margin-bottom:9px}
.section-head{margin-top:25px}
.section-head h2{font-size:19px}
.section-head a{font-size:11px}
.grid{grid-template-columns:1fr;gap:26px}
.thumb{margin-bottom:10px}
.card h3{font-size:16px}
.byline{font-size:12px}
.context{font-size:11px}
.explainer{grid-template-columns:1fr;gap:15px;margin-top:32px}
.footer{display:block;font-size:11px}
.footer nav{margin-top:15px;flex-wrap:wrap}
.watch-title{font-size:23px}
.watch-actions{flex-wrap:wrap}
.recommend .grid{grid-template-columns:1fr}
.topic-grid{grid-template-columns:1fr}
.description{padding:18px}
.prose h1{font-size:29px}
.section-head select{max-width:150px}
.toast{min-width:250px;text-align:center;font-size:13px}
.featured .thumb:after{opacity:1}
}

[hidden]{display:none!important}


.feature-details{font-size:12px;color:var(--blue);margin-top:11px}
.featured .player{align-self:center}
.featured .button:disabled{opacity:.8;cursor:default}
.featured .player img{opacity:.9}
.featured .player button{font-size:12px}


/* Learning paths and source-backed viewing notes. */
.learning-callout{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:24px;background:var(--soft);border-radius:12px;margin:0 0 34px}
.learning-callout h2{font-size:21px;letter-spacing:-.4px;margin:0 0 7px}.learning-callout p{font-size:14px;color:var(--muted);margin:0;max-width:72ch}.learning-callout .button{flex-shrink:0}
.guide-nav{display:flex;flex-wrap:wrap;gap:10px 22px;padding:0 0 25px;border-bottom:1px solid var(--line)}.guide-nav a,.route-details,.route-follow a,.next-steps a,.back-to-guide a,.course-bridge a,.guide-basis a,.resource-list a,.creator-source a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}
.selection-intro,.learning-route,.guide-basis{padding:25px 0;border-bottom:1px solid var(--line);scroll-margin-top:95px}.selection-intro h2,.learning-route h2,.guide-basis h2{font-size:24px;line-height:1.3;letter-spacing:-.5px;margin:0 0 12px}.selection-intro>p,.guide-basis p{max-width:85ch;font-size:14px;color:var(--muted);line-height:1.8}
.comparison-wrap{overflow:auto;max-width:100%;margin-top:20px;border:1px solid var(--line);border-radius:10px}.selection-table{width:100%;border-collapse:collapse;font-size:13px;min-width:660px;line-height:1.65}.selection-table caption{text-align:left;padding:15px;font-weight:600;background:var(--soft)}.selection-table th,.selection-table td{padding:15px;text-align:left;vertical-align:top;border-top:1px solid var(--line)}.selection-table thead{background:var(--soft)}.selection-table tbody th{min-width:155px}.selection-table a{color:var(--blue)}
.route-picks{display:grid;grid-template-columns:1fr 1fr;gap:32px}.route-pick{padding:20px 0}.route-label{color:var(--muted);font-size:12px}.route-pick h3{font-size:23px;line-height:1.3;margin:8px 0 14px;letter-spacing:-.4px}.route-pick h3 a:hover{text-decoration:underline;text-underline-offset:4px}.route-pick p{max-width:78ch;font-size:14px;line-height:1.8;margin:9px 0;color:var(--muted)}.route-pick strong{color:var(--ink)}.route-details{display:inline-block;font-size:13px;margin-top:9px}.route-prereq{padding-top:9px}.route-follow{font-size:14px;line-height:1.8;max-width:85ch}
.course-bridge{background:var(--soft);border-radius:10px;padding:22px;margin:20px 0}.course-bridge h3{font-size:17px;margin:0 0 8px}.course-bridge p,.course-bridge li{font-size:14px;line-height:1.8}.course-bridge p{color:var(--muted);max-width:82ch;margin:8px 0}.course-bridge ol{padding-left:22px;margin-bottom:12px}.course-bridge li{padding:3px 0}
.watch-guide{padding:8px 0 25px;border-bottom:1px solid var(--line);margin-bottom:25px}.watch-guide h2{font-size:23px;line-height:1.3;letter-spacing:-.4px;margin:28px 0 12px}.watch-guide h3{font-size:16px;line-height:1.5;margin:0 0 10px}.watch-guide p,.watch-guide li{font-size:14px;line-height:1.8}.watch-guide p{max-width:78ch;color:var(--muted)}.watch-guide .editorial-note{font-size:12px;margin:0 0 12px}.prep-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin:24px 0}.prep-grid ul{padding-left:20px;margin:0}.prep-grid li{padding:3px 0;color:var(--muted)}.readiness,.creator-corrections{border-left:3px solid var(--ink);padding:8px 0 8px 18px;margin:25px 0}.readiness p{margin:0}.creator-corrections ul{padding-left:20px;margin-bottom:0;color:var(--muted)}
.chapter-list{list-style:none;padding:0;margin:18px 0}.chapter-list li{border-bottom:1px solid var(--line)}.chapter-link{display:flex;align-items:baseline;gap:18px;padding:12px 8px;color:var(--ink);font-size:13px;line-height:1.6;overflow-wrap:anywhere}.chapter-link span{flex-shrink:0;min-width:61px;color:var(--blue);font-variant-numeric:tabular-nums}.chapter-link:hover,.chapter-link[aria-current=true]{background:var(--soft)}.creator-source{font-size:12px!important}.resource-list{padding-left:20px}.resource-list li{padding:5px 0}.next-steps{display:grid;gap:18px}.next-steps article{border:1px solid var(--line);padding:18px;border-radius:8px}.next-steps h3{margin:0 0 7px}.next-steps p{margin:0}.back-to-guide{margin-top:23px}.archive-heading{font-size:20px;margin:0 0 24px}#all-videos,#player{scroll-margin-top:95px}
@media(max-width:850px){.learning-callout{align-items:flex-start;flex-direction:column;gap:17px}.route-picks,.prep-grid{grid-template-columns:1fr;gap:15px}.route-pick{padding:16px 0}.selection-intro h2,.learning-route h2,.guide-basis h2{font-size:22px}}
@media(max-width:600px){.learning-callout{padding:20px}.guide-nav{gap:10px 18px}.guide-nav a{font-size:12px}.selection-intro,.learning-route,.guide-basis{padding:23px 0;scroll-margin-top:132px}.route-pick h3{font-size:22px}.course-bridge{padding:18px}.watch-guide h2{font-size:21px}.chapter-link{gap:10px;padding:12px 4px}.chapter-link span{min-width:58px}.next-steps article{padding:16px}#all-videos,#player{scroll-margin-top:132px}}

.comparison-hint{display:none}@media(max-width:850px){.comparison-hint{display:block;font-size:12px!important}}

/* Topic guides retain individually authored choices inside a shared reading layout. */
.topic-angle{font-size:12px!important;letter-spacing:.04em;text-transform:uppercase;font-weight:600;color:var(--muted);margin:0 0 10px!important}.topic-approach{padding:24px 0 6px;max-width:86ch}.topic-approach h2,.topic-questions h2,.topic-next h2,.topic-reference h2{font-size:23px;line-height:1.35;letter-spacing:-.4px;margin:0 0 15px}.topic-approach p,.topic-questions li,.topic-caution,.topic-reference li{font-size:15px;line-height:1.9;color:var(--muted)}.topic-picks{display:grid;grid-template-columns:1fr 1fr;gap:26px}.topic-pick{border:1px solid var(--line);border-radius:12px;overflow:hidden;align-self:start}.topic-pick-image{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--soft)}.topic-pick-image img{width:100%;height:100%;object-fit:cover}.topic-pick-copy{padding:19px}.topic-pick h3{font-size:19px;line-height:1.45;margin:0 0 10px;letter-spacing:-.25px}.topic-pick p{font-size:14px;line-height:1.8;color:var(--muted);margin:10px 0 0}.topic-pick .topic-channel{font-size:12px;margin:0}.topic-source-link a{font-size:12px;color:var(--blue)}.topic-questions{max-width:86ch;padding:30px 0 12px;scroll-margin-top:100px}.topic-questions ul{padding-left:22px}.topic-questions li{padding:7px 0}.topic-caution{border-left:3px solid var(--ink);padding:9px 0 9px 18px;margin:22px 0}.topic-next,.topic-reference{padding:22px 0;max-width:86ch}.topic-reference ul{padding-left:22px}.topic-neighbors{display:flex;gap:12px 24px;flex-wrap:wrap}.topic-neighbors a{color:var(--blue);font-size:14px}.topic-source-note{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:18px 0;margin:16px 0 36px}.topic-source-note summary{cursor:pointer;font-size:13px;color:var(--muted)}.topic-source-note p{font-size:12px;color:var(--muted);line-height:1.8;max-width:95ch}#starting-points{scroll-margin-top:95px}
@media(min-width:1250px){.topic-picks{max-width:1000px}}
@media(max-width:700px){.topic-picks{grid-template-columns:1fr;gap:20px}.topic-pick-copy{padding:17px}.topic-approach h2,.topic-questions h2,.topic-next h2,.topic-reference h2{font-size:21px}.topic-approach p,.topic-questions li,.topic-caution,.topic-reference li{font-size:14px}.topic-questions,#starting-points{scroll-margin-top:135px}}

/* One inline native creative; no overlay, sticky position or blank loading panel. */
.native-ad{clear:both;margin:0;min-height:1px;max-width:100%}
.native-ad-inner{max-width:360px;margin:0 auto;min-width:0}
.native-ad:not([data-state="filled"]) .native-ad-inner{max-height:0;overflow:hidden;visibility:hidden}
.native-ad[data-state="filled"]{margin:30px 0;padding:18px 0;border-block:1px solid var(--line)}
.native-ad-head{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--muted);font-size:11px;letter-spacing:.04em;margin-bottom:10px}
.native-ad-head button{display:grid;place-items:center;background:transparent;color:var(--muted);border:0;border-radius:50%;width:32px;height:32px;font-size:22px;cursor:pointer}
.native-ad-head button:hover{background:var(--soft)}
.native-ad-head button:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
@media(max-width:600px){.native-ad[data-state="filled"]{margin:24px 0}.native-ad-inner{max-width:320px}.native-ad-head button{width:44px;height:44px}}
.topic-pick-copy .topic-source-meta{font-size:12px;color:var(--muted);margin-top:-5px;font-variant-numeric:tabular-nums}