/* ============================================================
   NAVA MEDIA · Census Playbook (education hub) styles
   ============================================================ */
.art-hero{padding:170px 0 46px}
.crumbs{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);display:flex;gap:10px;flex-wrap:wrap;margin-bottom:26px}
.crumbs a{color:var(--dim);transition:color .25s}
.crumbs a:hover{color:var(--cyan)}
.crumbs span::before{content:"/";margin-right:10px;color:var(--line)}
.cat-chip{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--cyan);border:1px solid rgba(37,213,255,.3);background:rgba(37,213,255,.06);border-radius:999px;padding:6px 14px;margin-bottom:20px}
.art-hero h1{font-size:clamp(30px,4.2vw,50px);max-width:24ch;margin:6px 0 22px}
.art-hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.byline{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding:16px 0;border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);font-size:13.5px;color:var(--mist);max-width:760px}
.byline .avatar{width:38px;height:38px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;font-family:var(--disp);font-weight:700;font-size:14px;color:#08111f;flex:none}
.byline b{color:var(--bone);font-weight:600}
.byline a{color:var(--cyan)}
.byline .dt{margin-left:auto;font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--dim)}
@media(max-width:640px){.byline .dt{margin-left:0;width:100%}}

/* answer box: the quotable short answer */
.answer-box{position:relative;max-width:760px;margin:34px 0;padding:26px 28px;background:linear-gradient(140deg,rgba(37,213,255,.07),rgba(139,92,246,.08),rgba(255,61,154,.06));border:1px solid var(--line);border-radius:18px}
.answer-box::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:3px;background:var(--grad)}
.answer-box .ab-label{font-family:var(--mono);font-size:10.5px;letter-spacing:.24em;text-transform:uppercase;color:var(--cyan);display:block;margin-bottom:10px}
.answer-box p{font-size:16.5px;line-height:1.7;color:var(--bone);margin:0}
.answer-box a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}

/* quick summary (pillars) */
.qsum{max-width:760px;margin:30px 0;border:1px solid var(--line-soft);border-radius:18px;padding:26px 28px;background:var(--panel)}
.qsum h2{font-size:15px;font-family:var(--mono);font-weight:500;letter-spacing:.22em;text-transform:uppercase;color:var(--dim);margin:0 0 16px}
.qsum ul{list-style:none;margin:0;padding:0}
.qsum li{padding:9px 0 9px 26px;position:relative;font-size:15px;color:var(--mist);line-height:1.6}
.qsum li::before{content:"→";position:absolute;left:0;color:var(--cyan);font-family:var(--mono)}
.qsum li b{color:var(--bone)}

/* TOC */
.toc{max-width:760px;margin:30px 0;font-size:14px}
.toc summary{cursor:pointer;font-family:var(--mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--cyan);padding:12px 0}
.toc .toclist{list-style:none;margin:6px 0 10px;padding:0;columns:2;column-gap:40px}
.toc .toclist li{padding:6px 0;break-inside:avoid}
.toc .toclist li::before{content:none}
.toc .toclist a{color:var(--mist);transition:color .25s}
.toc .toclist a:hover{color:var(--bone)}
@media(max-width:640px){.toc .toclist{columns:1}}

/* article body */
.art-body{max-width:760px;padding-bottom:40px}
.art-body h2{font-size:clamp(22px,2.6vw,30px);margin:52px 0 18px;scroll-margin-top:110px}
.art-body h3{font-size:18px;margin:30px 0 12px;color:var(--bone)}
.art-body p{color:var(--mist);font-size:16px;line-height:1.75;margin:0 0 18px}
.art-body p b,.art-body p strong{color:var(--bone)}
.art-body a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}
.art-body ul,.art-body ol{margin:0 0 20px;padding-left:4px;list-style:none}
.art-body li{position:relative;padding:6px 0 6px 26px;color:var(--mist);font-size:15.5px;line-height:1.65}
.art-body ul li::before{content:"→";position:absolute;left:0;color:var(--cyan);font-family:var(--mono);font-size:13px}
.art-body ol{counter-reset:oli}
.art-body ol li{counter-increment:oli}
.art-body ol li::before{content:counter(oli,decimal-leading-zero);position:absolute;left:0;color:var(--cyan);font-family:var(--mono);font-size:12px;top:9px}
.art-body blockquote{border-left:3px solid transparent;border-image:linear-gradient(180deg,#25D5FF,#FF3D9A) 1;padding:4px 0 4px 22px;margin:26px 0;font-family:var(--disp);font-size:19px;color:var(--bone);line-height:1.5}
.art-body table{width:100%;border-collapse:collapse;margin:0 0 22px;font-size:14px}
.art-body th{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan);text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
.art-body td{padding:11px 12px;border-bottom:1px solid var(--line-soft);color:var(--mist);vertical-align:top}
.art-body .keybox{background:var(--panel);border:1px solid var(--line-soft);border-radius:14px;padding:20px 22px;margin:0 0 22px}
.art-body .keybox p:last-child{margin:0}

/* FAQ */
.faq{max-width:760px;margin:56px 0 0}
.faq h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:8px}
.faq details{border-bottom:1px solid var(--line-soft)}
.faq summary{cursor:pointer;padding:18px 34px 18px 0;font-family:var(--disp);font-weight:600;font-size:16.5px;color:var(--bone);position:relative;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:14px;font-family:var(--mono);font-size:20px;color:var(--cyan);transition:transform .3s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .fa{padding:0 0 20px;color:var(--mist);font-size:15px;line-height:1.7;max-width:64ch}

/* related */
.related{margin:64px 0 0}
.related h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:22px}
.rel-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
.rel-card{display:block;background:var(--panel);border:1px solid var(--line-soft);border-radius:14px;padding:20px;transition:transform .3s,border-color .3s}
.rel-card:hover{transform:translateY(-3px);border-color:var(--line)}
.rel-card .rc-cat{font-family:var(--mono);font-size:9.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--cyan);display:block;margin-bottom:8px}
.rel-card .rc-t{font-family:var(--disp);font-weight:600;font-size:15px;color:var(--bone);line-height:1.4}

/* sources */
.sources{max-width:760px;margin:56px 0 0;border-top:1px solid var(--line-soft);padding-top:22px}
.sources h2{font-family:var(--mono);font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--dim);font-weight:500;margin-bottom:12px}
.sources ul{list-style:none;margin:0;padding:0}
.sources li{padding:5px 0;font-size:13px;color:var(--dim)}
.sources a{color:var(--mist);text-decoration:underline;text-underline-offset:3px}

/* hub index */
.hub-hero{padding:180px 0 60px}
.hub-hero h1{font-size:clamp(38px,5.4vw,64px);max-width:18ch;margin:20px 0 18px}
.hub-cats{margin:70px 0 0}
.hub-cat{margin-bottom:64px}
.hub-cat-head{display:flex;align-items:baseline;gap:18px;margin-bottom:22px;flex-wrap:wrap}
.hub-cat-head h2{font-size:clamp(22px,2.6vw,30px);margin:0}
.hub-cat-head .cnt{font-family:var(--mono);font-size:11px;letter-spacing:.18em;color:var(--dim)}
.hub-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.hub-card{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line-soft);border-radius:18px;padding:26px;transition:transform .3s,border-color .3s;position:relative;overflow:hidden}
.hub-card:hover{transform:translateY(-4px);border-color:var(--line)}
.hub-card.pillar{background:linear-gradient(160deg,rgba(37,213,255,.06),rgba(139,92,246,.07),rgba(255,61,154,.05));border-color:var(--line)}
.hub-card .hc-k{font-family:var(--mono);font-size:10px;letter-spacing:.22em;text-transform:uppercase;color:var(--cyan);margin-bottom:12px}
.hub-card h3{font-family:var(--disp);font-weight:600;font-size:18px;line-height:1.35;margin:0 0 10px;color:var(--bone)}
.hub-card p{font-size:13.5px;color:var(--mist);line-height:1.6;margin:0;flex:1}
.hub-card .hc-more{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--cyan);margin-top:16px}
.pillar-band{margin-top:8px}

/* author page */
.author-card{display:grid;grid-template-columns:auto 1fr;gap:28px;align-items:start;background:var(--panel);border:1px solid var(--line-soft);border-radius:22px;padding:36px;max-width:760px}
.author-card .big-avatar{width:88px;height:88px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;font-family:var(--disp);font-weight:700;font-size:30px;color:#08111f}
@media(max-width:560px){.author-card{grid-template-columns:1fr}}