/* UpskillGrid: one stylesheet for every page */
@font-face{font-family:"Plus Jakarta Sans";font-weight:700;font-display:swap;src:url(fonts/plus-jakarta-sans-latin-700-normal.woff2) format("woff2")}
@font-face{font-family:"Plus Jakarta Sans";font-weight:800;font-display:swap;src:url(fonts/plus-jakarta-sans-latin-800-normal.woff2) format("woff2")}
@font-face{font-family:"DM Sans";font-weight:400;font-display:swap;src:url(fonts/dm-sans-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"DM Sans";font-weight:600;font-display:swap;src:url(fonts/dm-sans-latin-600-normal.woff2) format("woff2")}

:root{
  --ink:#0F172A; --ink-2:#1E293B; --slate:#475569; --slate-2:#64748B;
  --line:#E2E8F0; --paper:#FFFFFF; --paper-2:#F8FAFC;
  --green:#10B981; --green-2:#34D399; --green-ink:#047857; --green-soft:#D1FAE5;
  --indigo:#6366F1; --indigo-soft:#E0E7FF; --amber-soft:#FEF3C7; --rose-soft:#FFE4E6;
  --display:"Plus Jakarta Sans","Segoe UI",system-ui,sans-serif;
  --body:"DM Sans","Segoe UI",system-ui,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --r-sm:10px; --r-md:16px; --r-lg:24px;
  --shadow:0 1px 2px rgba(15,23,42,.06),0 8px 24px rgba(15,23,42,.06);
  --max:1160px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--body);font-size:17px;line-height:1.65;color:var(--ink-2);background:var(--paper);overflow-wrap:break-word}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3,h4{font-family:var(--display);color:var(--ink);line-height:1.2;margin:0 0 .6em;font-weight:800;letter-spacing:-.01em}
h1{font-size:clamp(2rem,1.4rem + 2.6vw,3.2rem)}
h2{font-size:clamp(1.45rem,1.2rem + 1vw,1.9rem)}
h3{font-size:1.2rem;font-weight:700}
p{margin:0 0 1.1rem}
::selection{background:var(--green-2);color:var(--ink)}
:focus-visible{outline:3px solid var(--indigo);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:20px}
.skip-link{position:absolute;left:-9999px;top:8px;background:var(--ink);color:#fff;padding:8px 14px;border-radius:8px;z-index:100}
.skip-link:focus{left:8px}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.nav-row{display:flex;align-items:center;gap:20px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:800;font-size:1.2rem;color:var(--ink);text-decoration:none;letter-spacing:-.02em}
.brand-text b{color:var(--green-ink);font-weight:800}
.nav-links{display:flex;gap:4px;margin-left:auto}
.nav-links a{text-decoration:none;font-weight:600;font-size:.95rem;color:var(--slate);padding:8px 12px;border-radius:999px}
.nav-links a:hover,.nav-links a.is-active{color:var(--ink);background:var(--paper-2)}
.nav-toggle{display:none;margin-left:auto;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;position:relative}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{position:absolute;left:12px;width:18px;height:2px;background:var(--ink);content:"";transition:transform .2s}
.nav-toggle span{top:21px}.nav-toggle span::before{top:-6px;left:0}.nav-toggle span::after{top:6px;left:0}
@media (max-width:860px){
  .nav-toggle{display:block}
  .nav-links{display:none;position:absolute;top:68px;left:0;right:0;flex-direction:column;background:#fff;border-bottom:1px solid var(--line);padding:10px 20px 18px;margin:0}
  .nav-links.is-open{display:flex}
  .nav-links a{padding:12px 10px;font-size:1rem}
}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;text-decoration:none;border-radius:999px;padding:12px 22px;border:1.5px solid transparent;transition:transform .15s,background .15s}
.btn:hover{transform:translateY(-1px)}
.btn--primary{background:var(--ink);color:#fff}
.btn--green{background:var(--green);color:var(--ink)}
.btn--ghost{border-color:var(--line);color:var(--ink);background:#fff}

/* Hero */
.hero{position:relative;overflow:hidden;background:var(--ink);color:#CBD5E1;padding:84px 0 92px}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(148,163,184,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(148,163,184,.09) 1px,transparent 1px);background-size:44px 44px;mask-image:radial-gradient(ellipse at 70% 30%,#000 30%,transparent 75%)}
.hero .container{position:relative}
.hero h1{color:#fff;max-width:18ch}
.hero h1 em{font-style:normal;color:var(--green-2)}
.hero p.lead{font-size:1.15rem;max-width:56ch;color:#CBD5E1}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero .btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.3)}
.eyebrow{display:inline-block;font-family:var(--display);font-weight:700;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--green-ink);margin-bottom:12px}
.hero .eyebrow{color:var(--green-2)}

/* Sections */
.section{padding:72px 0}
.section--alt{background:var(--paper-2);border-block:1px solid var(--line)}
.section-head{max-width:640px;margin-bottom:32px}
.section-head p{color:var(--slate)}

/* Category tiles */
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px}
.tile{display:block;text-decoration:none;border:1px solid var(--line);border-radius:var(--r-md);padding:22px;background:#fff;box-shadow:var(--shadow);transition:transform .15s,border-color .15s}
.tile:hover{transform:translateY(-2px);border-color:var(--green)}
.tile .tile-icon{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-family:var(--display);font-weight:800;margin-bottom:14px}
.tile p{color:var(--slate);font-size:.95rem;margin:0}
.ic-green{background:var(--green-soft);color:var(--green-ink)}
.ic-indigo{background:var(--indigo-soft);color:#3730A3}
.ic-amber{background:var(--amber-soft);color:#92400E}
.ic-rose{background:var(--rose-soft);color:#9F1239}

/* Post cards */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:18px}
.card{display:flex;flex-direction:column;text-decoration:none;border:1px solid var(--line);border-radius:var(--r-md);padding:22px;background:#fff;box-shadow:var(--shadow);transition:transform .15s,border-color .15s}
.card:hover{transform:translateY(-2px);border-color:var(--green)}
.card h3{margin:.2em 0 .5em}
.card p{color:var(--slate);font-size:.95rem;margin-bottom:14px}
.card .meta{margin-top:auto;font-size:.85rem;color:var(--slate-2)}
.pill{align-self:flex-start;display:inline-block;font-size:.75rem;font-weight:600;border-radius:999px;padding:3px 10px;background:var(--green-soft);color:var(--green-ink)}
.empty-note{color:var(--slate-2);font-style:italic}
.cat-block{margin-bottom:48px}
.cat-block h2{display:flex;align-items:center;gap:10px}

/* Page hero (inner pages) */
.page-hero{background:var(--paper-2);border-bottom:1px solid var(--line);padding:56px 0 40px}
.page-hero h1{max-width:26ch}
.page-hero p{color:var(--slate);max-width:62ch}
.crumbs{font-size:.88rem;color:var(--slate-2);margin-bottom:14px}
.crumbs a{text-decoration:none;color:var(--slate)}
.crumbs a:hover{color:var(--ink)}
.post-byline{font-size:.92rem;color:var(--slate)}
.post-byline a{font-weight:600}

/* Prose */
.prose{max-width:70ch;margin-inline:auto;padding:48px 0 64px}
.prose h2{margin-top:2.2rem;scroll-margin-top:90px}
.prose h3{margin-top:1.6rem}
.prose ul,.prose ol{padding-left:1.3rem;margin:0 0 1.2rem}
.prose li{margin-bottom:.5rem}
.prose a{color:var(--ink);font-weight:600;text-decoration:none;background:linear-gradient(transparent 62%,var(--green-soft) 62%);padding:0 1px}
.prose a:hover{background:var(--green-soft)}
.post-lead{font-size:1.15rem;color:var(--ink)}
.takeaways{background:var(--green-soft);border-radius:var(--r-md);padding:22px 24px;margin:28px 0}
.takeaways h2{font-size:1.15rem;margin:0 0 10px}
.takeaways ul{margin:0}
.toc{border:1px solid var(--line);border-radius:var(--r-md);padding:18px 22px;margin:0 0 12px}
.toc-title{font-family:var(--display);font-weight:700;margin-bottom:6px;color:var(--ink)}
.toc ol{margin:0}
.toc a{background:none;font-weight:400}
.table-wrap{overflow-x:auto;margin:0 0 1.4rem;border:1px solid var(--line);border-radius:var(--r-sm)}
table.post-table{width:100%;border-collapse:collapse;font-size:.93rem;min-width:520px}
.post-table th,.post-table td{padding:11px 13px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.post-table thead th{background:var(--paper-2);font-family:var(--display);font-size:.85rem}
.post-table tbody tr:last-child th,.post-table tbody tr:last-child td{border-bottom:0}
.callout{border-left:4px solid var(--indigo);background:var(--indigo-soft);padding:14px 18px;border-radius:0 var(--r-sm) var(--r-sm) 0;margin:0 0 1.3rem}
.faq-item{border:1px solid var(--line);border-radius:var(--r-sm);padding:14px 18px;margin-bottom:10px;background:#fff}
.faq-item summary{cursor:pointer;font-weight:600;color:var(--ink);list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-family:var(--display);font-size:1.3rem;line-height:1;color:var(--green-ink)}
.faq-item[open] summary::after{content:"\2212"}
.faq-item p{margin:10px 0 0}
.post-sources li{font-size:.95rem}
.author-box{display:flex;gap:16px;align-items:flex-start;border:1px solid var(--line);border-radius:var(--r-md);padding:20px;margin-top:36px;background:var(--paper-2)}
.author-box img{border-radius:50%;flex-shrink:0;width:72px;height:72px;object-fit:cover}
.author-box p{font-size:.95rem;margin-bottom:.6rem}
.author-name{font-family:var(--display);font-weight:700;color:var(--ink)}
.post-note{color:var(--slate-2)}

/* CTA band */
.cta-band{background:var(--ink);color:#CBD5E1;padding:56px 0;text-align:center}
.cta-band h2{color:#fff;max-width:28ch;margin-inline:auto}
.cta-band .eyebrow{color:var(--green-2)}

/* Footer */
.site-footer{background:#0B1120;color:#94A3B8;padding:56px 0 28px;font-size:.95rem}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px}
.site-footer h4{color:#fff;font-size:1rem;margin-bottom:12px}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:8px}
.site-footer a{text-decoration:none;color:#CBD5E1}
.site-footer a:hover{color:#fff}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;border-top:1px solid #1E293B;margin-top:36px;padding-top:20px;font-size:.88rem}
@media (max-width:760px){.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}}

@media (max-width:600px){
  body{font-size:16px}
  .hero{padding:60px 0 68px}
  .section{padding:52px 0}
  .author-box{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}