/* Blog Sigwalt — estático e indexável. Identidade: azul/sky + Inter/Montserrat. */
:root{
  --ink:#0f172a; --body:#334155; --muted:#64748b; --line:#e2e8f0;
  --bg:#ffffff; --soft:#f8fafc; --sky:#0284c7; --sky-600:#0369a1; --blue:#2563eb;
  --soft-blue:#eff6ff; --maxw:760px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--bg);color:var(--body);
  font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;line-height:1.7;
  -webkit-font-smoothing:antialiased;}
a{color:var(--sky-600);}
img{max-width:100%;height:auto;}

/* header/nav */
.nav{border-bottom:1px solid var(--line);background:rgba(255,255,255,.9);backdrop-filter:blur(8px);
  position:sticky;top:0;z-index:10;}
.nav .in{max-width:1080px;margin:0 auto;padding:14px 22px;display:flex;align-items:center;justify-content:space-between;}
.brand{font-family:Montserrat,Inter,sans-serif;font-weight:800;font-size:1.2rem;color:var(--ink);letter-spacing:-.02em;text-decoration:none;}
.brand span{color:var(--sky);}
.nav a.cta{background:linear-gradient(135deg,var(--sky),var(--blue));color:#fff;text-decoration:none;
  font-family:Montserrat,sans-serif;font-weight:700;font-size:.85rem;padding:9px 18px;border-radius:9px;}

/* article shell */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px;}
.crumbs{font-size:.8rem;color:var(--muted);margin:26px 0 0;}
.crumbs a{color:var(--muted);text-decoration:none;}
.crumbs a:hover{color:var(--sky-600);}
.eyebrow{font-family:Montserrat,sans-serif;font-weight:700;text-transform:uppercase;letter-spacing:.12em;
  font-size:.72rem;color:var(--sky);margin:34px 0 12px;}
h1{font-family:Montserrat,Inter,sans-serif;font-weight:800;color:var(--ink);letter-spacing:-.025em;
  font-size:clamp(1.9rem,5vw,2.7rem);line-height:1.12;margin:0 0 14px;text-wrap:balance;}
.dek{font-size:1.15rem;color:var(--muted);margin:0 0 22px;}
.meta{display:flex;gap:10px;align-items:center;font-size:.82rem;color:var(--muted);
  border-bottom:1px solid var(--line);padding-bottom:22px;margin-bottom:8px;font-family:Montserrat,sans-serif;}
.meta .dot{width:4px;height:4px;border-radius:50%;background:var(--muted);}

article h2{font-family:Montserrat,Inter,sans-serif;font-weight:800;color:var(--ink);letter-spacing:-.02em;
  font-size:clamp(1.35rem,3.5vw,1.7rem);line-height:1.2;margin:44px 0 14px;text-wrap:balance;}
article h3{font-family:Montserrat,sans-serif;font-weight:700;color:var(--ink);font-size:1.15rem;margin:30px 0 10px;}
article p{margin:0 0 18px;font-size:1.06rem;}
article ul,article ol{margin:0 0 20px;padding-left:22px;}
article li{margin:0 0 10px;font-size:1.06rem;}
article strong{color:var(--ink);}

.callout{background:var(--soft-blue);border:1px solid #dbeafe;border-left:4px solid var(--sky);
  border-radius:12px;padding:20px 22px;margin:28px 0;}
.callout p{margin:0;font-size:1rem;}
.callout b{color:var(--sky-600);}

.keytake{background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:22px 24px;margin:30px 0;}
.keytake h4{font-family:Montserrat,sans-serif;margin:0 0 12px;color:var(--ink);font-size:.95rem;text-transform:uppercase;letter-spacing:.06em;}
.keytake ul{margin:0;padding-left:20px;}
.keytake li{font-size:.98rem;margin-bottom:8px;}

/* CTA block */
.cta-box{background:linear-gradient(135deg,#0b1220,#0f2540);color:#e2e8f0;border-radius:18px;
  padding:34px 30px;margin:44px 0;text-align:center;}
.cta-box h3{font-family:Montserrat,sans-serif;color:#fff;font-size:1.4rem;margin:0 0 10px;}
.cta-box p{color:#9fb3c8;margin:0 auto 22px;max-width:44ch;}
.cta-box a{display:inline-block;background:linear-gradient(135deg,var(--sky),var(--blue));color:#fff;
  text-decoration:none;font-family:Montserrat,sans-serif;font-weight:700;padding:15px 30px;border-radius:11px;}

/* FAQ */
.faq{margin:36px 0;}
.faq details{border:1px solid var(--line);border-radius:12px;padding:2px 20px;margin-bottom:12px;background:var(--soft);}
.faq summary{cursor:pointer;font-family:Montserrat,sans-serif;font-weight:700;color:var(--ink);padding:16px 0;list-style:none;}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{content:"+";float:right;color:var(--sky);font-size:1.3rem;line-height:1;}
.faq details[open] summary::after{content:"–";}
.faq details p{margin:0 0 16px;font-size:1rem;}

/* related / index cards */
.grid{display:grid;gap:18px;grid-template-columns:1fr;margin:24px 0 60px;}
@media(min-width:640px){.grid{grid-template-columns:1fr 1fr;}}
.card{display:block;border:1px solid var(--line);border-radius:16px;padding:24px;text-decoration:none;
  background:var(--bg);transition:transform .15s,border-color .15s,box-shadow .15s;}
.card:hover{transform:translateY(-3px);border-color:#bae6fd;box-shadow:0 16px 30px -20px rgba(2,132,199,.4);}
.card .tag{font-family:Montserrat,sans-serif;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;
  color:var(--sky);background:var(--soft-blue);padding:4px 10px;border-radius:6px;display:inline-block;margin-bottom:12px;}
.card h3{font-family:Montserrat,sans-serif;color:var(--ink);font-size:1.15rem;margin:0 0 8px;line-height:1.25;}
.card p{color:var(--muted);font-size:.95rem;margin:0;}
.card-date{font-family:var(--f-mono);font-size:.72rem;color:var(--muted);display:block;margin-top:14px;letter-spacing:.02em;}
.card.soon{opacity:.6;pointer-events:none;}

footer.site{border-top:1px solid var(--line);background:var(--soft);margin-top:40px;}
footer.site .in{max-width:1080px;margin:0 auto;padding:34px 22px;font-size:.85rem;color:var(--muted);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;}
footer.site a{color:var(--muted);text-decoration:none;}
footer.site a:hover{color:var(--sky-600);}
:focus-visible{outline:2px solid var(--sky);outline-offset:2px;border-radius:4px;}

/* Author box (assinatura no fim dos artigos) */
.author-box{display:flex;gap:18px;align-items:flex-start;background:var(--soft);border:1px solid var(--line);
  border-radius:16px;padding:22px 24px;margin:40px 0;}
.author-box .ab-photo{width:64px;height:64px;border-radius:50%;object-fit:cover;flex:none;
  border:2px solid #bae6fd;background:linear-gradient(135deg,#0284c7,#2563eb);}
.author-box .ab-label{font-family:Montserrat,sans-serif;font-size:.68rem;font-weight:700;text-transform:uppercase;
  letter-spacing:.1em;color:var(--muted);}
.author-box .ab-name{font-family:Montserrat,sans-serif;font-weight:800;color:var(--ink);font-size:1.1rem;
  text-decoration:none;display:block;margin:2px 0 6px;}
.author-box .ab-bio{margin:0;font-size:.92rem;color:var(--body);}