/* ============================================================
   vaeyc — Modern Learning design system (hand-written, no build)
   Soft violet + warm coral · Inter (UI) + Lora (article body)
   ============================================================ */
:root{
  --bg:#FBFAF8; --surface:#F5F3EF; --card:#FFFFFF; --border:#E7E5E4;
  --text:#1F2937; --text-strong:#0F172A; --muted:#64748B; --faint:#7C8696;
  --brand:#6D28D9; --brand-deep:#581C87; --brand-bright:#8B5CF6; --brand-soft:#EDE9FE;
  --accent:#F87171; --accent-deep:#DC2626; --accent-bright:#FCA5A5; --accent-soft:#FEE2E2;
  --highlight:#F59E0B; --highlight-soft:#FEF3C7;
  --success:#10B981; --info:#2563EB;
  --cat-ai:#6D28D9; --cat-online:#2563EB; --cat-training:#0F766E; --cat-behavioral:#B45309; --cat-career:#DC2626;
  --font-ui:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --font-serif:'Lora',Georgia,'Times New Roman',serif;
  --font-mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --wrap:1280px; --read:680px;
  --radius:14px; --radius-sm:10px; --radius-lg:20px;
  --shadow-card:0 1px 2px rgba(15,23,42,.04),0 4px 16px rgba(15,23,42,.06);
  --shadow-lift:0 8px 30px rgba(109,40,217,.12);
}
[data-theme="dark"]{
  --bg:#0F172A; --surface:#1E293B; --card:#1E293B; --border:#334155;
  --text:#F1F5F9; --text-strong:#FFFFFF; --muted:#94A3B8; --faint:#94A3B8;
  --brand-soft:#2E1065; --accent-soft:#3f1d1d; --highlight-soft:#3a2e10;
  --shadow-card:0 1px 2px rgba(0,0,0,.3),0 4px 16px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-ui);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-deep)}
h1,h2,h3,h4{font-family:var(--font-ui);color:var(--text-strong);line-height:1.2;font-weight:800;margin:0 0 .5em}
h1{font-size:clamp(2rem,4.5vw,3.1rem);letter-spacing:-.02em}
h2{font-size:clamp(1.5rem,2.6vw,1.9rem);letter-spacing:-.01em}
h3{font-size:1.25rem}
h4{font-size:1.05rem}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.section{padding:56px 0}
.section.tint{background:var(--surface)}
.section.brand-tint{background:var(--brand-soft)}
.muted{color:var(--muted)}
.eyebrow{font-size:.72rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--brand)}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 16px;z-index:1000;border-radius:0 0 8px 0}
.skip-link:focus{left:0}
:focus-visible{outline:2.5px solid var(--brand);outline-offset:2px;border-radius:4px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-ui);font-weight:700;font-size:.95rem;padding:11px 20px;border-radius:999px;border:1.5px solid transparent;cursor:pointer;transition:all .2s ease;text-align:center;line-height:1.2}
.btn-brand{background:var(--brand);color:#fff}.btn-brand:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:#7f1d1d}.btn-accent:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--border);color:var(--text)}.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-lg{padding:14px 26px;font-size:1.02rem}
.btn-block{display:flex;width:100%;justify-content:center}
.btn-text{color:var(--brand);font-weight:700;font-size:.92rem}.btn-text:hover{color:var(--accent-deep)}

/* ---------- category chips ---------- */
.chip{display:inline-flex;align-items:center;gap:5px;font-size:.7rem;font-weight:800;letter-spacing:.04em;text-transform:uppercase;padding:4px 11px;border-radius:999px;background:var(--brand-soft);color:var(--brand);white-space:nowrap;line-height:1.4}
.chip.c-ai-learning{background:#EDE9FE;color:#6D28D9}
.chip.c-online-education{background:#DBEAFE;color:#1D4ED8}
.chip.c-training-development{background:#CCFBF1;color:#0F766E}
.chip.c-behavioral-science{background:#FEF3C7;color:#92400E}
.chip.c-career-skills{background:#FEE2E2;color:#B91C1C}
[data-theme="dark"] .chip{background:#2E1065;color:#C4B5FD}
.tag-chip{display:inline-block;font-size:.8rem;padding:6px 13px;border-radius:999px;background:var(--card);border:1px solid var(--border);color:var(--text);margin:3px;font-weight:600}
.tag-chip:hover{border-color:var(--brand);color:var(--brand)}

/* ---------- header ---------- */
.topbar{background:var(--brand-deep);color:#EDE9FE;font-size:.8rem}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;height:38px;gap:16px}
.topbar a{color:#EDE9FE}.topbar a:hover{color:#fff}
.topbar-links{display:flex;gap:18px;align-items:center}
.topbar-links a{font-weight:600}
.site-header{position:sticky;top:0;z-index:200;background:rgba(251,250,248,.9);backdrop-filter:saturate(160%) blur(10px);border-bottom:1px solid var(--border)}
[data-theme="dark"] .site-header{background:rgba(15,23,42,.9)}
.site-header .wrap{display:flex;align-items:center;gap:22px;height:74px}
.wordmark{display:flex;flex-direction:column;line-height:1;font-family:var(--font-ui)}
.wordmark .w{font-size:1.7rem;font-weight:800;letter-spacing:-.03em;color:var(--brand)}
.wordmark .sub{font-size:.66rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-top:3px}
.mainnav{display:flex;gap:4px;margin-left:auto}
.mainnav>.nav-item{position:relative}
.mainnav>.nav-item>a{display:flex;align-items:center;gap:5px;padding:10px 13px;font-weight:700;font-size:.92rem;color:var(--text);border-radius:8px}
.mainnav>.nav-item>a:hover{color:var(--brand);background:var(--brand-soft)}
.mega{position:absolute;top:calc(100% + 8px);left:50%;transform:translateX(-50%) translateY(8px);width:340px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lift);padding:16px;opacity:0;visibility:hidden;transition:all .2s ease;z-index:50}
.nav-item:hover .mega{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.mega h5{font-size:.7rem;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);margin:0 0 10px}
.mega .mega-art{display:block;padding:7px 0;border-bottom:1px solid var(--border);font-size:.88rem;font-weight:600;color:var(--text)}
.mega .mega-art:hover{color:var(--brand)}
.mega .mega-subs{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0}
.mega .mega-all{font-weight:700;color:var(--brand);font-size:.85rem;display:inline-block;margin-top:6px}
.header-cta{display:flex;align-items:center;gap:8px}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;border:1px solid var(--border);background:var(--card);color:var(--text);cursor:pointer}
.icon-btn:hover{border-color:var(--brand);color:var(--brand)}
.hamburger{display:none}

/* ---------- hero / cards ---------- */
.lead-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:32px;align-items:start}
.lead-card .lead-img{display:block;border-radius:var(--radius);overflow:hidden;aspect-ratio:16/9;background:var(--brand-soft)}
.lead-card .lead-img img{width:100%;height:100%;object-fit:cover}
.lead-card h2{font-family:var(--font-serif);font-weight:700;font-size:clamp(1.7rem,3vw,2.5rem);margin:16px 0 10px;letter-spacing:-.01em}
.lead-card h2 a{color:var(--text-strong)}.lead-card h2 a:hover{color:var(--brand)}
.lead-stand{font-family:var(--font-serif);font-size:1.15rem;color:var(--muted);line-height:1.6}
.byline{display:flex;align-items:center;gap:10px;margin-top:14px;font-size:.85rem;color:var(--muted)}
.byline img,.byline .mono{width:34px;height:34px;border-radius:50%;object-fit:cover;flex:none}
.byline a{font-weight:700;color:var(--text)}.byline a:hover{color:var(--brand)}
.also-stack{display:flex;flex-direction:column;gap:18px}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease;display:flex;flex-direction:column}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift)}
.card-img{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft)}
.card-img img{width:100%;height:100%;object-fit:cover}
.card-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;flex:1}
.card-title{font-family:var(--font-serif);font-weight:700;font-size:1.12rem;line-height:1.3;margin:0}
.card-title a{color:var(--text-strong)}.card-title a:hover{color:var(--brand)}
.card-dek{color:var(--muted);font-size:.92rem;margin:0}
.card-meta{display:flex;align-items:center;gap:8px;font-size:.78rem;color:var(--faint);margin-top:auto}
.card-row{display:flex;gap:16px;align-items:flex-start}
.card-row .card-img{width:130px;flex:none;border-radius:var(--radius-sm);aspect-ratio:4/3}
.grid{display:grid;gap:24px}
.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px;border-bottom:2px solid var(--brand);padding-bottom:10px}
.section-head .st{font-size:1.5rem;font-weight:800;color:var(--text-strong);margin:0}
.section-head .ss{color:var(--muted);font-size:.95rem;margin:4px 0 0;font-family:var(--font-serif)}
.section-head .all-link{font-weight:700;color:var(--brand);white-space:nowrap;font-size:.9rem}
.spotlight{display:grid;grid-template-columns:1.4fr 1fr;gap:28px;align-items:start}
.spotlight .support{display:grid;gap:14px}
.cat-accent-ai{border-top:3px solid var(--cat-ai)}
.spot-flagship{background:linear-gradient(135deg,rgba(109,40,217,.05),rgba(248,113,113,.05));border-radius:var(--radius-lg);padding:28px;margin:0 -8px}

/* ---------- article ---------- */
.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;max-width:var(--wrap);margin:0 auto;padding:0 24px}
/* single-post layout: center a tight reading column next to the sidebar (no dead gutter) */
.article-wrap.single-wrap{grid-template-columns:minmax(0,720px) 300px;justify-content:center;gap:64px;max-width:1180px}
.single-wrap .prose,.single-wrap .quick-answer,.single-wrap .takeaways,.single-wrap .toc,.single-wrap .sources-box,.single-wrap .author-card,.single-wrap .faq-block,.single-wrap .nl-band,.single-wrap .tags-row,.single-wrap .callout,.single-wrap .disclosure{max-width:none}
.breadcrumb{font-size:.82rem;color:var(--faint);display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin:20px 0}
.breadcrumb a{color:var(--muted)}.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--border)}
.article-head h1{font-family:var(--font-serif);font-weight:700;letter-spacing:-.01em;margin:10px 0 14px}
.article-stand{font-family:var(--font-serif);font-size:1.22rem;line-height:1.55;color:var(--muted);margin:0 0 18px}
.author-block{display:flex;align-items:center;gap:12px;padding:14px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);flex-wrap:wrap}
.author-block img,.author-block .mono{width:46px;height:46px;border-radius:50%;object-fit:cover;flex:none}
.author-block .ab-name{font-weight:700;color:var(--text)}
.author-block .ab-meta{font-size:.82rem;color:var(--muted)}
figure.hero-fig{margin:24px 0}
figure.hero-fig img{border-radius:var(--radius);width:100%}
figure.hero-fig figcaption{font-size:.8rem;color:var(--faint);margin-top:8px;text-align:center}
.prose{font-family:var(--font-serif);font-size:1.12rem;line-height:1.78;color:var(--text);max-width:var(--read)}
.prose h2{font-family:var(--font-ui);font-size:1.6rem;margin:1.8em 0 .5em;scroll-margin-top:90px}
.prose h3{font-family:var(--font-ui);font-size:1.25rem;margin:1.5em 0 .4em}
.prose p{margin:0 0 1.2em}
.prose a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--brand-bright)}
.prose a:hover{color:var(--accent-deep)}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.4em}
.prose li{margin:.4em 0}
.prose strong{color:var(--text-strong);font-weight:700}
.prose img{border-radius:var(--radius);margin:1.4em 0}
.prose blockquote{margin:1.6em 0;padding:4px 0 4px 24px;border-left:4px solid var(--brand);font-style:italic;font-size:1.25rem;color:var(--text-strong)}
.prose table{width:100%;border-collapse:collapse;margin:1.5em 0;font-family:var(--font-ui);font-size:.95rem}
.prose th,.prose td{border:1px solid var(--border);padding:10px 12px;text-align:left}
.prose thead th{background:var(--brand-soft);color:var(--brand-deep);font-weight:700}
.prose tbody tr:nth-child(even){background:var(--surface)}
.prose .dropcap::first-letter,.prose>p:first-of-type::first-letter{}
.quick-answer{background:var(--brand-soft);border:1px solid #DDD6FE;border-radius:var(--radius);padding:20px 22px;margin:22px 0;max-width:var(--read)}
[data-theme="dark"] .quick-answer{border-color:#4c1d95}
.quick-answer .qa-label{font-size:.72rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--brand);margin-bottom:6px}
.quick-answer p{font-family:var(--font-serif);font-size:1.1rem;margin:0;color:var(--text-strong)}
.takeaways{background:var(--card);border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:var(--radius-sm);padding:18px 22px;margin:22px 0;max-width:var(--read)}
.takeaways h3{font-family:var(--font-ui);font-size:1rem;margin:0 0 10px;color:var(--text-strong)}
.takeaways ul{margin:0;padding-left:1.2em;font-family:var(--font-ui);font-size:.98rem}
.takeaways li{margin:.4em 0}
.callout{border-radius:var(--radius-sm);padding:16px 20px;margin:1.6em 0;max-width:var(--read);font-family:var(--font-ui);font-size:.98rem;border:1px solid}
.callout .ct{font-weight:800;font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;display:block;margin-bottom:6px}
.callout.tip{background:var(--brand-soft);border-color:#DDD6FE}.callout.tip .ct{color:var(--brand)}
.callout.know{background:#ECFDF5;border-color:#A7F3D0}.callout.know .ct{color:#047857}
.callout.research{background:var(--highlight-soft);border-color:#FDE68A}.callout.research .ct{color:#B45309}
.callout.try{background:var(--accent-soft);border-color:#FECACA}.callout.try .ct{color:#B91C1C}
[data-theme="dark"] .callout.know{background:#06281f}[data-theme="dark"] .callout.research{background:#332608}
.toc{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px 20px;margin:22px 0;max-width:var(--read)}
.toc .toc-h{font-size:.75rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:8px}
.toc ol{margin:0;padding-left:1.3em;font-family:var(--font-ui);font-size:.92rem}
.toc li{margin:5px 0}.toc a{color:var(--text)}.toc a:hover{color:var(--brand)}
.disclosure{background:var(--surface);border:1px dashed var(--border);border-radius:var(--radius-sm);padding:10px 16px;margin:18px 0;font-size:.84rem;color:var(--muted);max-width:var(--read)}
.sources-box{max-width:var(--read);margin:36px 0 0;padding:22px;background:var(--surface);border-radius:var(--radius)}
.sources-box h3{font-family:var(--font-ui);font-size:1.05rem;margin:0 0 10px}
.sources-box ol{margin:0;padding-left:1.3em;font-family:var(--font-ui);font-size:.92rem}
.sources-box li{margin:.45em 0}
.sources-box a{word-break:break-word}
.tags-row{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin:28px 0;max-width:var(--read)}
.author-card{display:flex;gap:18px;align-items:flex-start;padding:24px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);margin:32px 0;max-width:var(--read);flex-wrap:wrap}
.author-card img,.author-card .mono{width:80px;height:80px;border-radius:50%;object-fit:cover;flex:none}
.author-card .ac-role{color:var(--brand);font-weight:700;font-size:.85rem}
.faq-block{max-width:var(--read);margin:32px 0}
.accordion-item{border-bottom:1px solid var(--border)}
.accordion-q{width:100%;text-align:left;background:none;border:none;padding:16px 0;font-family:var(--font-ui);font-weight:700;font-size:1.02rem;color:var(--text-strong);cursor:pointer;display:flex;justify-content:space-between;gap:12px;align-items:center}
.accordion-q .pm{color:var(--brand);font-size:1.3rem;flex:none}
.accordion-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.accordion-a-inner{padding:0 0 16px;font-family:var(--font-serif);color:var(--muted);line-height:1.7}
.accordion-item.open .accordion-a{max-height:600px}
/* sidebar */
.sidebar{display:flex;flex-direction:column;gap:28px}
.toc-mobile{display:none}
.toc-desktop ol{margin:0;padding-left:1.25em;font-size:.88rem;font-family:var(--font-ui)}
.toc-desktop li{margin:7px 0;line-height:1.4}
.toc-desktop a{color:var(--text)}
.toc-desktop a:hover{color:var(--brand)}
.toc-desktop{max-height:60vh;overflow-y:auto}
.sticky-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:24px}
.side-box{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.side-box h4{font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:0 0 14px}
.trending-item{display:flex;gap:12px;padding:9px 0;border-bottom:1px solid var(--border);align-items:baseline}
.trending-item .num{font-family:var(--font-mono);font-weight:700;color:var(--brand-bright);font-size:1.1rem;flex:none}
.trending-item a{font-weight:600;font-size:.92rem;color:var(--text);line-height:1.35}
.trending-item a:hover{color:var(--brand)}
/* reading progress + share */
.progress-bar{position:fixed;top:0;left:0;height:3px;background:linear-gradient(90deg,var(--brand),var(--accent));z-index:300;width:0}
.share-rail{position:fixed;left:max(16px,calc((100vw - var(--wrap))/2 - 60px));top:50%;transform:translateY(-50%);display:flex;flex-direction:column;gap:8px;z-index:90}
.share-rail a{width:38px;height:38px;border-radius:50%;border:1px solid var(--border);background:var(--card);display:flex;align-items:center;justify-content:center;color:var(--muted)}
.share-rail a:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
@media(max-width:1180px){.share-rail{display:none}}

/* ---------- page / hub / author ---------- */
.page-head{padding:44px 0 8px}
.page-title{font-family:var(--font-serif);font-weight:700}
.page-lede{font-family:var(--font-serif);font-size:1.2rem;color:var(--muted);max-width:720px}
.reading{max-width:var(--read);margin:0 auto}
.prose.page-prose{max-width:none}
.hub-hero{background:var(--brand-soft);padding:48px 0 36px;border-bottom:1px solid var(--border)}
.hub-hero .hh-name{font-family:var(--font-serif);font-weight:700;font-size:clamp(2rem,4vw,2.8rem);color:var(--brand-deep);margin:8px 0 10px}
.editor-badge{display:inline-flex;gap:10px;align-items:center;background:var(--card);border:1px solid var(--border);border-radius:999px;padding:6px 14px 6px 6px;font-size:.85rem;margin-top:14px}
.editor-badge img,.editor-badge .mono{width:34px;height:34px;border-radius:50%;object-fit:cover}
.author-hero{background:linear-gradient(135deg,var(--brand-soft),var(--accent-soft));padding:56px 0 40px}
.author-hero .ah-grid{display:flex;gap:28px;align-items:flex-start;flex-wrap:wrap}
.author-hero img.avatar,.author-hero .mono{width:140px;height:140px;border-radius:24px;object-fit:cover;flex:none;box-shadow:var(--shadow-card)}
.author-hero h1{font-family:var(--font-serif);font-weight:700;margin:0 0 4px}
.author-hero .ah-role{color:var(--brand-deep);font-weight:700;font-size:1.05rem}
.cred-chips{display:flex;flex-wrap:wrap;gap:6px;margin:14px 0}
.cred-chip{font-size:.72rem;font-weight:700;padding:4px 11px;border-radius:999px;background:var(--card);color:var(--brand);border:1px solid var(--border)}
.pagination{display:flex;gap:8px;justify-content:center;margin:44px 0;flex-wrap:wrap}
.pagination .page-numbers{padding:9px 15px;border:1px solid var(--border);border-radius:10px;color:var(--text);font-weight:600}
.pagination .current{background:var(--brand);color:#fff;border-color:var(--brand)}
.pagination a:hover{border-color:var(--brand);color:var(--brand)}

/* ---------- newsletter / mono / misc ---------- */
.nl-band{background:linear-gradient(135deg,var(--brand),var(--brand-deep));border-radius:var(--radius-lg);padding:40px;color:#fff;text-align:center}
.nl-band h2{color:#fff;font-family:var(--font-serif);font-weight:700}
.nl-band p{color:#EDE9FE;max-width:560px;margin:6px auto 18px}
.nl-form{display:flex;gap:10px;max-width:480px;margin:0 auto}
.nl-form input{flex:1;padding:13px 16px;border-radius:999px;border:1px solid var(--border);background:var(--card);color:var(--text);font-size:.95rem}
.nl-form input:focus{outline:none;border-color:var(--brand)}
.mono{display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;font-weight:800;font-family:var(--font-ui)}
.longform{background:var(--surface)}
.longform .lf-block{max-width:var(--read);margin:0 auto 8px}
.longform .lf-block h2{font-family:var(--font-serif);font-weight:700;font-size:1.7rem;scroll-margin-top:90px;margin-top:1.4em}
.lf-toc{max-width:var(--read);margin:0 auto 28px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px}
.lf-toc h2{font-family:var(--font-ui);font-size:1.1rem;margin:0 0 12px}
.lf-toc ol{columns:2;column-gap:28px;margin:0;padding-left:1.3em;font-size:.92rem}
.cta-cats{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px;max-width:var(--read);margin:28px auto}
.disambig{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px 18px;font-size:.86rem;color:var(--muted);max-width:760px;margin:8px auto}
.e404{text-align:center;padding:90px 0}
.e404 .code{font-family:var(--font-mono);font-size:6rem;font-weight:800;background:linear-gradient(135deg,var(--brand),var(--accent));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;line-height:1}
.search-overlay{position:fixed;inset:0;background:rgba(15,23,42,.6);backdrop-filter:blur(6px);z-index:400;display:none;align-items:flex-start;justify-content:center;padding-top:14vh}
.search-overlay.open{display:flex}
.search-box{width:min(640px,92vw)}
.search-box input{width:100%;padding:18px 22px;font-size:1.2rem;border-radius:14px;border:none;font-family:var(--font-serif)}

/* ---------- footer ---------- */
.site-footer{background:#170a2e;color:#C4B5FD;margin-top:72px;padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.8fr repeat(4,1fr);gap:32px}
.footer-col h4{font-size:.74rem;text-transform:uppercase;letter-spacing:.12em;color:#fff;margin:0 0 16px}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin:8px 0}
.footer-col a{color:#C4B5FD;font-size:.9rem}.footer-col a:hover{color:#fff}
.footer-brand .wordmark .w{color:#fff}.footer-brand .wordmark .sub{color:var(--accent-bright)}
.footer-brand p{color:#A78BCF;font-size:.9rem;line-height:1.6;margin:14px 0}
.footer-social{display:flex;gap:10px;margin-top:10px}
.footer-social a{color:#A78BCF}.footer-social a:hover{color:#fff}
.footer-bottom{border-top:1px solid #2e1d52;margin-top:44px;padding:22px 0;font-size:.82rem;color:#9b86c4;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.footer-disambig{border-top:1px solid #2e1d52;padding:16px 0;font-size:.8rem;color:#8b76b4;text-align:center}

/* ---------- responsive ---------- */
@media(max-width:980px){
  .toc-mobile{display:block}.toc-desktop{display:none}
  .g4{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(2,1fr)}
  .lead-grid,.spotlight{grid-template-columns:1fr}
  .article-wrap,.article-wrap.single-wrap{grid-template-columns:1fr;gap:0;max-width:var(--wrap);justify-content:stretch}.sidebar{margin-top:40px}
  .sticky-side{position:static}
  .footer-grid{grid-template-columns:1fr 1fr}
  .mainnav,.topbar-links{display:none}.hamburger{display:inline-flex}
}
@media(max-width:560px){
  .g4,.g3,.g2{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .lf-toc ol{columns:1}
  .nl-form{flex-direction:column}
  body{font-size:16px}
}
/* mobile drawer */
.drawer{position:fixed;inset:0 0 0 auto;width:min(330px,86vw);background:var(--card);z-index:500;transform:translateX(100%);transition:transform .25s ease;padding:24px;overflow-y:auto;box-shadow:-8px 0 30px rgba(0,0,0,.2)}
.drawer.open{transform:translateX(0)}
.drawer a{display:block;padding:12px 0;border-bottom:1px solid var(--border);font-weight:700;color:var(--text)}
.drawer-close{float:right;font-size:1.5rem;background:none;border:none;cursor:pointer;color:var(--muted)}