:root{
  --bg:#f7f7f5;
  --surface:#ffffff;
  --ink:#101010;
  --muted:#595959;
  --line:#dddddd;
  --accent:#8b1e1e;
  --accent-dark:#5c1111;
  --soft:#f1eeee;
  --shadow:0 18px 45px rgba(0,0,0,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.65;
}
a{color:inherit}
img{display:block;max-width:100%}
.container{width:min(1120px, calc(100% - 32px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.topbar{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand-mark{width:42px;height:42px;display:grid;place-items:center;background:var(--accent);color:#fff;font-weight:900;letter-spacing:.06em}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-text strong{font-size:1.05rem}
.brand-text span{font-size:.82rem;color:var(--muted)}
.site-nav{display:flex;gap:18px;font-size:.94rem;font-weight:800}
.site-nav a{text-decoration:none;color:var(--muted)}
.site-nav a:hover{color:var(--accent)}
.cover{position:relative;min-height:560px;display:grid;align-items:end;overflow:hidden;background:#151515}
.cover-media{position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.90),rgba(0,0,0,.58),rgba(0,0,0,.22)),url("immagini/hero-runtechlab-brand.webp") center/cover no-repeat}
.cover-overlay{position:relative;width:100%;padding:96px 0 58px}
.cover-content{color:#fff}
.eyebrow{margin:0 0 12px;color:var(--accent);font-size:.78rem;font-weight:900;letter-spacing:.14em;text-transform:uppercase}
.cover .eyebrow{color:#ffb1b1}
h1,h2,h3,p{margin-top:0}
h1{font-family:Georgia,"Times New Roman",serif;font-size:3.2rem;line-height:1.02;max-width:720px;margin-bottom:18px;font-weight:700}
.lead{max-width:660px;font-size:1.12rem;color:#eeeeee;margin-bottom:24px}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:12px 18px;background:var(--accent);color:#fff;text-decoration:none;font-weight:900;border:0}
.button:hover{background:var(--accent-dark)}
.section{padding:44px 0}
.section-heading{margin-bottom:18px}
.section-heading h2{font-family:Georgia,"Times New Roman",serif;font-size:2rem;line-height:1;margin:0}
.article-list{display:grid;grid-template-columns:1fr;gap:18px}
.article-card{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow)}
.article-card a{display:block;padding:26px;text-decoration:none}
.card-label{display:block;margin:0 0 10px;color:var(--accent);font-size:.78rem;font-weight:900;letter-spacing:.13em;text-transform:uppercase}
.article-card h3{font-family:Georgia,"Times New Roman",serif;font-size:1.65rem;line-height:1.12;margin-bottom:10px}
.article-card p{max-width:760px;color:var(--muted);margin-bottom:12px}
.article-card time{font-size:.9rem;color:var(--muted);font-weight:700}
.site-footer{padding:24px 0 34px;background:#fff;border-top:1px solid var(--line)}
.footer-row{display:flex;justify-content:space-between;gap:16px;font-size:.95rem;color:var(--muted)}
.article-page{padding:28px 0 64px}
.article-shell{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);padding:42px}
.article-nav{display:flex;justify-content:space-between;gap:14px;padding-bottom:20px;margin-bottom:28px;border-bottom:1px solid var(--line);font-size:.95rem;font-weight:850}
.article-nav a{color:var(--accent);text-decoration:none}
.article-head{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(260px,.65fr);gap:28px;align-items:start}
.article-meta{margin:0 0 12px;color:var(--accent);font-size:.78rem;text-transform:uppercase;letter-spacing:.13em;font-weight:900}
.article h1{color:var(--ink);font-size:2.65rem;max-width:760px}
.article .lead{color:var(--muted);max-width:780px}
.article-excerpt{font-size:1.05rem;color:var(--muted);font-weight:700}
.article-date{display:block;color:var(--muted);font-size:.95rem;font-weight:800;margin:10px 0 0}
.article-aside{background:var(--soft);border-left:5px solid var(--accent);padding:20px}
.article-aside span{display:block;color:var(--muted);font-size:.75rem;font-weight:900;letter-spacing:.13em;text-transform:uppercase;margin-bottom:8px}
.article-aside strong{display:block;font-size:1.2rem;margin-bottom:8px}
.article-body{max-width:780px;margin-top:30px}
.article-body p,.article-body li{font-size:1.06rem;color:#343434}
.article-body h2{margin:34px 0 10px;font-size:1.55rem;line-height:1.18}
.article-body figure{margin:28px 0}
.article-body img{width:100%;border:1px solid var(--line)}
.article-body figcaption{font-size:.92rem;color:var(--muted);margin-top:8px}
.article-body ul{padding-left:20px}
.article-body li{margin-bottom:8px}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;background:#fff}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px;text-align:left;vertical-align:top}
.article-body th{background:var(--soft)}
.sources a{color:var(--accent);text-decoration:none;font-weight:700}
.faq{border-top:1px solid var(--line);margin-top:32px;padding-top:8px}
@media (max-width: 900px){
  .cover{min-height:520px}
  h1{font-size:2.5rem}
  .article-head{grid-template-columns:1fr}
}
@media (max-width: 640px){
  .topbar{align-items:flex-start;flex-direction:column;padding:14px 0}
  .site-nav{font-size:.9rem}
  .cover{min-height:500px}
  .cover-overlay{padding:76px 0 36px}
  h1{font-size:2.1rem}
  .lead{font-size:1rem}
  .section{padding:32px 0}
  .article-card a,.article-shell{padding:22px}
  .article-card h3{font-size:1.45rem}
  .article h1{font-size:2rem}
  .footer-row,.article-nav{flex-direction:column}
}