/* =========================================================
 * Blog tecnico — hub list + article reading layout
 * Allineato al design system dark navy IESolution
 * ========================================================= */

/* ===== Hub ===== */
.bg-hero{
  padding: clamp(48px,7vw,96px) 0 clamp(20px,3vw,32px);
  border-bottom:1px solid var(--bd-2);
  position:relative; overflow:hidden;
}
.bg-hero::before{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:
    radial-gradient(900px 500px at 20% 30%, rgba(0,180,216,.10), transparent 60%),
    radial-gradient(800px 480px at 85% 70%, rgba(0,119,182,.08), transparent 65%);
}
.bg-hero .wrap{position:relative; z-index:1}
.bg-hero h1{
  font-family:var(--serif);
  font-size:clamp(2rem, 3.6vw, 2.8rem);
  margin:0 0 14px;
  letter-spacing:-.01em;
  color:var(--ink);
}
.bg-hero .bg-sub{
  font-size:15.5px;
  line-height:1.6;
  color:var(--ink-2);
  max-width:760px;
  margin:0;
}

.bg-grid{
  max-width:1100px;
  margin:48px auto 80px;
  padding:0 16px;
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(320px, 1fr));
  gap:20px;
}
.bg-card{
  display:flex; flex-direction:column;
  background:rgba(11,18,32,.45);
  border:1px solid var(--bd);
  border-radius:4px;
  padding:24px;
  transition:border-color .2s, background .2s, transform .15s;
  text-decoration:none;
  color:inherit;
}
.bg-card:hover{
  border-color:rgba(0,180,216,.4);
  background:rgba(0,180,216,.04);
  transform:translateY(-2px);
}
.bg-card-cat{
  display:inline-block;
  font-family:var(--mono);
  font-size:10.5px; font-weight:500;
  letter-spacing:.06em;
  text-transform:uppercase;
  padding:3px 10px;
  border-radius:3px;
  margin-bottom:14px;
  align-self:flex-start;
  border:1px solid;
}
.bg-card-cat.cat-surety{      background:rgba(245,158,11,.10); border-color:rgba(245,158,11,.30); color:#fcd34d; }
.bg-card-cat.cat-compliance{  background:rgba(16,185,129,.10); border-color:rgba(16,185,129,.30); color:#6ee7b7; }
.bg-card-cat.cat-lloyds{      background:rgba(168,85,247,.10); border-color:rgba(168,85,247,.30); color:#d8b4fe; }
.bg-card-cat.cat-claims{      background:rgba(248,113,113,.10);border-color:rgba(248,113,113,.30);color:#fca5a5; }

.bg-card h3{
  font-family:var(--sans);
  font-size:1.15rem; font-weight:600;
  margin:0 0 12px;
  line-height:1.35;
  letter-spacing:-.005em;
  color:var(--ink);
}
.bg-card p{
  font-size:14px;
  color:var(--ink-2);
  line-height:1.6;
  margin:0 0 16px;
  flex-grow:1;
}
.bg-card-meta{
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-family:var(--mono);
  font-size:11.5px;
  color:var(--muted);
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--bd-2);
}
.bg-card-meta time{font-variant-numeric:tabular-nums}

/* ===== Article ===== */
.ba-hero{
  padding: clamp(48px,6vw,72px) 0 clamp(24px,3vw,40px);
  border-bottom:1px solid var(--bd-2);
  position:relative; overflow:hidden;
}
.ba-hero::before{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:
    radial-gradient(900px 500px at 20% 30%, rgba(0,180,216,.10), transparent 60%);
}
.ba-hero .wrap{position:relative; z-index:1; max-width:820px}
.ba-cat{
  display:inline-block;
  font-family:var(--mono);
  font-size:11px; font-weight:500;
  letter-spacing:.06em;
  text-transform:uppercase;
  padding:4px 12px;
  border-radius:3px;
  margin-bottom:18px;
  border:1px solid;
}
.ba-cat.cat-surety{      background:rgba(245,158,11,.10); border-color:rgba(245,158,11,.30); color:#fcd34d; }
.ba-cat.cat-compliance{  background:rgba(16,185,129,.10); border-color:rgba(16,185,129,.30); color:#6ee7b7; }
.ba-cat.cat-lloyds{      background:rgba(168,85,247,.10); border-color:rgba(168,85,247,.30); color:#d8b4fe; }
.ba-cat.cat-claims{      background:rgba(248,113,113,.10);border-color:rgba(248,113,113,.30);color:#fca5a5; }

.ba-hero h1{
  font-family:var(--serif);
  font-size:clamp(1.9rem, 3.4vw, 2.5rem);
  margin:0 0 18px;
  line-height:1.22;
  letter-spacing:-.015em;
  color:var(--ink);
}
.ba-meta{
  display:flex;
  gap:18px;
  flex-wrap:wrap;
  font-family:var(--mono);
  font-size:12px;
  color:var(--muted);
  align-items:center;
}
.ba-meta .ba-dot{color:var(--muted-3)}

/* ===== Article body ===== */
.ba-body{
  max-width:740px;
  margin:0 auto;
  padding:40px 16px 64px;
  font-family:var(--serif);
  font-size:17px;
  line-height:1.72;
  color:var(--ink);
}
.ba-body h2{
  font-family:var(--sans);
  font-size:1.6rem; font-weight:600;
  margin:56px 0 18px;
  letter-spacing:-.01em;
  color:var(--ink);
  scroll-margin-top:80px;
}
.ba-body h3{
  font-family:var(--sans);
  font-size:1.2rem; font-weight:600;
  margin:32px 0 12px;
  color:var(--ink);
  scroll-margin-top:80px;
}
.ba-body p{margin:0 0 18px; color:var(--ink-2)}
.ba-body ul, .ba-body ol{margin:0 0 22px; padding-left:1.5em; color:var(--ink-2)}
.ba-body li{margin-bottom:8px}
.ba-body strong{font-weight:600; color:var(--ink)}
.ba-body a{
  color:var(--cyan-400);
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-thickness:1px;
  text-decoration-color:rgba(72,202,228,.4);
  transition:color .12s ease, text-decoration-color .12s ease;
}
.ba-body a:hover{
  color:var(--cyan-300);
  text-decoration-color:var(--cyan-300);
}

.ba-body blockquote{
  margin:24px 0;
  padding:18px 24px;
  border-left:3px solid var(--cyan-500);
  background:rgba(0,180,216,.05);
  border-radius:0 4px 4px 0;
  font-style:italic;
  color:var(--ink-2);
}
.ba-body blockquote p:last-child{margin-bottom:0}

.ba-callout{
  margin:30px 0;
  padding:20px 24px;
  background:rgba(0,180,216,.05);
  border:1px solid rgba(0,180,216,.22);
  border-radius:4px;
  font-family:var(--sans);
  font-size:15px;
}
.ba-callout strong:first-child{
  display:block;
  margin-bottom:8px;
  font-family:var(--mono);
  font-size:11px;
  font-weight:500;
  text-transform:uppercase;
  letter-spacing:.08em;
  color:var(--cyan-300);
}
.ba-callout p{color:var(--ink-2)}
.ba-callout p:last-child{margin-bottom:0}

.ba-toc{
  background:rgba(11,18,32,.55);
  border:1px solid var(--bd);
  border-radius:4px;
  padding:22px 26px;
  margin:0 0 44px;
  font-family:var(--sans);
}
.ba-toc h2{
  font-family:var(--mono) !important;
  font-size:11px !important;
  margin:0 0 12px !important;
  text-transform:uppercase;
  letter-spacing:.08em;
  color:var(--muted) !important;
  font-weight:500 !important;
}
.ba-toc ol{margin:0; padding-left:1.4em; color:var(--ink-2)}
.ba-toc li{margin-bottom:6px; font-size:14.5px}
.ba-toc a{
  color:var(--ink-2);
  text-decoration:none;
  transition:color .12s ease;
}
.ba-toc a:hover{color:var(--cyan-300)}

/* ===== Article FAQ ===== */
.ba-faq{margin:60px 0 32px}
.ba-faq h2{margin-top:0}
.ba-faq details{
  border:1px solid var(--bd);
  border-radius:4px;
  margin-bottom:10px;
  padding:16px 22px;
  background:rgba(11,18,32,.40);
  font-family:var(--sans);
}
.ba-faq summary{
  cursor:pointer;
  font-weight:600;
  color:var(--ink);
  list-style:none;
  position:relative;
  padding-right:32px;
  font-size:15px;
}
.ba-faq summary::-webkit-details-marker{display:none}
.ba-faq summary::after{
  content:'+';
  position:absolute;
  right:0; top:50%;
  transform:translateY(-50%);
  font-size:1.4rem;
  font-weight:300;
  color:var(--cyan-400);
}
.ba-faq details[open] summary::after{content:'−'}
.ba-faq details[open]{
  background:rgba(0,180,216,.04);
  border-color:rgba(0,180,216,.22);
}
.ba-faq details > p{
  margin:14px 0 0;
  font-size:14.5px;
  line-height:1.65;
  color:var(--ink-2);
}

/* ===== Article footer / related ===== */
.ba-footer{
  max-width:740px;
  margin:32px auto 80px;
  padding:30px 16px 0;
  border-top:1px solid var(--bd);
  font-family:var(--sans);
}
.ba-footer > strong{
  display:block;
  font-family:var(--mono);
  font-size:11px;
  text-transform:uppercase;
  letter-spacing:.08em;
  color:var(--muted);
  font-weight:500;
  margin-bottom:14px;
}
.ba-related{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top:12px;
}
.ba-related a{
  display:inline-block;
  padding:8px 16px;
  background:rgba(11,18,32,.55);
  border:1px solid var(--bd);
  border-radius:999px;
  font-size:13.5px;
  color:var(--ink-2);
  text-decoration:none;
  transition:background .12s ease, border-color .12s ease, color .12s ease;
}
.ba-related a:hover{
  background:rgba(0,180,216,.06);
  border-color:rgba(0,180,216,.35);
  color:var(--cyan-300);
}

/* ===== Mobile ===== */
@media (max-width:720px){
  .bg-grid{grid-template-columns:1fr; gap:16px}
  .ba-body{font-size:16px; padding:30px 12px 48px}
  .ba-body h2{font-size:1.4rem; margin:42px 0 14px}
  .ba-body h3{font-size:1.12rem; margin:26px 0 10px}
  .ba-toc{padding:18px 20px}
}