/* Valicai: brand Concept A "Sella". Contrasti verificati WCAG AA (testo >= 4.5:1). */
:root{
  --bg:#FBF6EE; --surface:#F3EADB; --text:#1C2033; --text2:#4A4F66;
  --primary:#22305A; --accent:#D9624C; --line:#D8CDBB; --link:#22305A; --focus:#B4412D;
  --mark-bg:#FFE08A; --mark-fg:#3A2A00;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#121828; --surface:#1B2338; --text:#F3EDE3; --text2:#C9C4BA;
    --primary:#FBF1E3; --accent:#F59E8B; --line:#34405E; --link:#F9B7A8; --focus:#F59E8B;
    --mark-bg:#FFE08A; --mark-fg:#3A2A00;
  }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);
  font:1.0625rem/1.65 "Atkinson Hyperlegible",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--link);text-underline-offset:.15em}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:2px}
.skip{position:absolute;left:-999px;top:0;background:var(--primary);color:var(--bg);padding:.75rem 1rem;z-index:10}
.skip:focus{left:0}
.wrap{max-width:46rem;margin:0 auto;padding:0 1rem}
header.site{border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.5rem 1.5rem;padding-top:.75rem;padding-bottom:.75rem}
.brand{display:inline-flex;align-items:center;gap:.6rem;text-decoration:none;color:var(--text);
  font:600 1.6rem/1 Fraunces,Georgia,"Times New Roman",serif;min-height:48px}
.brand img{width:40px;height:40px}
nav ul{list-style:none;display:flex;flex-wrap:wrap;gap:.25rem 1rem;margin:0;padding:0}
nav a{display:inline-flex;align-items:center;min-height:44px;padding:0 .25rem}
main{padding:2rem 0 3rem}
h1,h2,h3{font-family:Fraunces,Georgia,"Times New Roman",serif;line-height:1.25;color:var(--text)}
h1{font-size:2rem;margin:.5rem 0 1rem}
h2{font-size:1.45rem;margin:2.2rem 0 .6rem}
h3{font-size:1.15rem;margin:1.6rem 0 .4rem}
p,ul,ol{margin:.7rem 0}
li{margin:.3rem 0}
.meta{color:var(--text2)}
.table-wrap{overflow-x:auto;margin:1rem 0;border:1px solid var(--line);border-radius:6px}
table{border-collapse:collapse;width:100%;min-width:34rem;font-size:.97rem}
th,td{text-align:left;vertical-align:top;padding:.6rem .75rem;border-bottom:1px solid var(--line)}
th{background:var(--surface);color:var(--text)}
tr:last-child td{border-bottom:0}
code{background:var(--surface);padding:.1em .35em;border-radius:4px;font-size:.92em}
mark.todo{background:var(--mark-bg);color:var(--mark-fg);padding:.1em .4em;border-radius:4px;font-weight:700;outline:2px solid #B07A00}
.hero{padding:2.5rem 0 1rem}
.hero .lead{font-size:1.3rem;color:var(--text);max-width:34rem}
.hero img.big{width:96px;height:96px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:1.1rem 1.25rem;margin:1.5rem 0}
.badges{display:flex;flex-wrap:wrap;gap:.75rem;margin:1rem 0}
.badge{display:inline-flex;align-items:center;min-height:48px;padding:.5rem 1rem;border:2px solid var(--primary);border-radius:8px;color:var(--text);background:transparent}
.badge small{display:block;color:var(--text2)}
.btn{display:inline-flex;align-items:center;min-height:48px;padding:.5rem 1.25rem;border-radius:8px;background:var(--primary);color:var(--bg);font-weight:700;text-decoration:none}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .btn{color:#121828}}
footer.site{border-top:1px solid var(--line);color:var(--text2);padding:1.5rem 0 2.5rem;font-size:.95rem}
footer.site ul{list-style:none;display:flex;flex-wrap:wrap;gap:.25rem 1rem;padding:0;margin:0 0 .75rem}
footer.site a{display:inline-flex;align-items:center;min-height:44px}
@media (max-width:480px){h1{font-size:1.65rem}.brand{font-size:1.4rem}}