/* SkillShelf — professional navy + emerald. Display: Sora · Body: Inter */
:root{
  --bg:#FBFCFD;--surface:#FFFFFF;--ink:#13203A;--ink-soft:#3B4A66;--muted:#6B7689;
  --line:#E6EAF0;--brand:#0EA371;--brand-dark:#0B7E58;--brand-tint:#E7F6EF;--accent:#1D4ED8;
  --max:1140px;--r:16px;--shadow:0 1px 0 var(--line),0 22px 48px -32px rgba(19,32,58,.4);
}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Inter",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:18px;line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink)}a:hover{color:var(--brand-dark)}
.wrap{max-width:var(--max);margin:0 auto;padding:0 22px}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;background:var(--ink);color:#fff;padding:8px 14px;border-radius:8px;z-index:99}
:focus-visible{outline:3px solid var(--brand);outline-offset:2px;border-radius:4px}
.site-head{position:sticky;top:0;z-index:40;background:rgba(251,252,253,.9);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.head-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:70px}
.brand{display:flex;align-items:center;gap:9px;text-decoration:none}.brand:hover{text-decoration:none}
.brand-logo{width:30px;height:30px;flex:0 0 auto}
.brand-mark{font-family:"Sora",sans-serif;font-weight:700;font-size:1.32rem;letter-spacing:-.02em;color:var(--ink)}
.brand-mark .a{color:var(--brand)}
.site-nav{display:flex;gap:26px;align-items:center}
.site-nav a{font-size:.95rem;font-weight:500;color:var(--ink-soft);text-decoration:none}.site-nav a:hover{color:var(--ink)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;width:42px;height:42px;flex-direction:column;gap:5px;justify-content:center;align-items:center}
.nav-toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.2s}
.hero{padding:78px 0 40px}
.eyebrow{display:inline-block;font-family:"Sora",sans-serif;font-size:.74rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--brand-dark);background:var(--brand-tint);padding:6px 12px;border-radius:999px}
.hero h1{font-family:"Sora",sans-serif;font-weight:700;letter-spacing:-.03em;line-height:1.05;font-size:clamp(2.3rem,5.6vw,3.7rem);margin:.5em 0 .3em;max-width:18ch}
.hero h1 .a{color:var(--brand)}
.hero p{font-size:1.18rem;color:var(--ink-soft);max-width:56ch;margin:0}
.sec-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:56px 0 22px;flex-wrap:wrap}
.sec-head h2{font-family:"Sora",sans-serif;font-weight:700;font-size:1.55rem;margin:0;letter-spacing:-.02em;display:flex;align-items:center;gap:12px}
.sec-head h2::before{content:"";width:22px;height:4px;border-radius:3px;background:var(--brand)}
.sec-head a{font-size:.9rem;font-weight:500;color:var(--muted);text-decoration:none}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;transition:transform .15s ease,box-shadow .2s ease,border-color .2s}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#D8DEE8}
.card a{color:inherit;text-decoration:none}
.card-body{padding:22px;display:flex;flex-direction:column;gap:11px;flex:1}
.tag{font-family:"Sora",sans-serif;font-size:.7rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--brand-dark);align-self:flex-start}
.card h3{font-family:"Sora",sans-serif;font-weight:600;font-size:1.2rem;line-height:1.25;margin:0;letter-spacing:-.01em}
.card p{margin:0;font-size:.95rem;color:var(--ink-soft);flex:1}
.meta{font-size:.8rem;color:var(--muted);display:flex;gap:9px;align-items:center;margin-top:4px}
.meta .dot{width:3px;height:3px;border-radius:50%;background:var(--muted)}
.card.feat{grid-column:span 2;flex-direction:row;background:linear-gradient(180deg,#fff,#fbfdfc)}
.card.feat .card-body{justify-content:center}.card.feat h3{font-size:1.6rem}
.article{max-width:730px;margin:0 auto;padding:52px 22px 10px}
.article .crumbs{font-size:.84rem;color:var(--muted);margin-bottom:18px}
.article .crumbs a{color:var(--muted);text-decoration:none}.article .crumbs a:hover{color:var(--brand-dark)}
.article h1{font-family:"Sora",sans-serif;font-weight:700;letter-spacing:-.03em;line-height:1.1;font-size:clamp(2rem,4.6vw,2.8rem);margin:.1em 0 .35em}
.article .lede{font-size:1.18rem;color:var(--ink-soft);margin:0 0 20px}
.byline{font-size:.85rem;color:var(--muted);display:flex;gap:12px;flex-wrap:wrap;align-items:center;padding-bottom:24px;border-bottom:1px solid var(--line);margin-bottom:36px}
.byline .av{width:30px;height:30px;border-radius:50%;background:var(--brand-tint);color:var(--brand-dark);display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:.8rem;font-family:"Sora",sans-serif}
.prose{font-size:1.06rem;color:#1f2c45}
.prose h2{font-family:"Sora",sans-serif;font-weight:700;font-size:1.5rem;letter-spacing:-.02em;margin:1.9em 0 .5em;line-height:1.25}
.prose h3{font-family:"Sora",sans-serif;font-weight:600;font-size:1.2rem;margin:1.5em 0 .4em}
.prose p{margin:0 0 1.1em}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.3em}.prose li{margin:.45em 0}
.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:2px}
.prose strong{font-weight:600;color:var(--ink)}
.prose blockquote{margin:1.6em 0;padding:.4em 0 .4em 22px;border-left:4px solid var(--brand);font-size:1.18rem;color:var(--ink-soft);font-style:italic}
.prose code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.88em;background:#EEF1F6;padding:.1em .4em;border-radius:5px}
.prose .callout{background:var(--brand-tint);border:1px solid #C9E9DA;border-radius:14px;padding:18px 20px;margin:1.7em 0;font-size:.98rem;color:#143b2c}
.prose .callout strong{display:block;margin-bottom:5px;font-family:"Sora",sans-serif;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--brand-dark)}
.ad-slot{margin:36px auto;text-align:center;min-height:0}
.related{border-top:1px solid var(--line);margin-top:52px;padding-top:14px}
.page{max-width:730px;margin:0 auto;padding:52px 22px 10px}
.page h1{font-family:"Sora",sans-serif;font-weight:700;font-size:clamp(2rem,4.6vw,2.6rem);letter-spacing:-.03em;margin:0 0 .3em}
.page .updated{font-size:.82rem;color:var(--muted);margin-bottom:30px}
.cform{display:grid;gap:14px;max-width:520px;margin-top:24px}
.cform label{font-size:.9rem;font-weight:600}
.cform input,.cform textarea{width:100%;font:inherit;font-size:1rem;padding:13px 15px;border:1px solid var(--line);border-radius:11px;background:#fff}
.cform input:focus,.cform textarea:focus{border-color:var(--brand);outline:none}
.cform button{justify-self:start;background:var(--brand);color:#fff;border:0;border-radius:11px;padding:13px 26px;font-weight:600;cursor:pointer;font-size:1rem;font-family:"Sora",sans-serif}
.cform button:hover{background:var(--brand-dark)}
.site-foot{border-top:1px solid var(--line);margin-top:84px;background:var(--surface)}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;padding-top:50px;padding-bottom:34px}
.foot-brand .brand-mark{font-size:1.25rem}
.foot-brand p{color:var(--muted);font-size:.92rem;margin:.7em 0 0;max-width:34ch}
.foot-loc{font-size:.82rem;margin-top:.4em!important}
.foot-col h4{font-family:"Sora",sans-serif;font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin:0 0 12px}
.foot-col a{display:block;color:var(--ink-soft);font-size:.94rem;margin:8px 0;text-decoration:none}
.foot-col a:hover{color:var(--brand-dark)}
.foot-bottom{border-top:1px solid var(--line);padding:18px 22px;color:var(--muted);font-size:.85rem}
.foot-bottom p{margin:0}
@media(max-width:880px){.grid{grid-template-columns:repeat(2,1fr)}.card.feat{grid-column:span 2;flex-direction:column}.card.feat h3{font-size:1.35rem}}
@media(max-width:640px){body{font-size:17px}.nav-toggle{display:flex}.site-nav{position:absolute;top:70px;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--line);flex-direction:column;gap:0;padding:6px 22px 16px;display:none}.site-nav.open{display:flex}.site-nav a{padding:12px 0;border-bottom:1px solid var(--line);width:100%}.grid{grid-template-columns:1fr}.card.feat{grid-column:span 1}.foot-grid{grid-template-columns:1fr 1fr}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}