:root{
  --paper:#EEF4FB; --surface:#FFFFFF; --panel:#0A1C38;
  --ink:#0A1E3B; --slate:#53637E; --line:#D8E3F1;
  --blue:#1746B0; --blue-bright:#1E5AE6; --hydro:#12B0E8;
  --amber:#E08A1E; --good:#1F9D57;
  --shadow:0 18px 40px -18px rgba(10,40,90,.35);
  --radius:18px; --maxw:1120px; --maxw-read:760px;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
@media (prefers-color-scheme:dark){
  :root{--paper:#061423;--surface:#0D2135;--panel:#020C1A;--ink:#E9F1FC;--slate:#9BB0CD;
    --line:#1A3350;--blue:#2E63D6;--blue-bright:#3B76F0;--hydro:#38BDF8;
    --shadow:0 20px 46px -20px rgba(0,0,0,.6);}
}
:root[data-theme="dark"]{--paper:#061423;--surface:#0D2135;--panel:#020C1A;--ink:#E9F1FC;
  --slate:#9BB0CD;--line:#1A3350;--blue:#2E63D6;--blue-bright:#3B76F0;--hydro:#38BDF8;
  --shadow:0 20px 46px -20px rgba(0,0,0,.6);}
:root[data-theme="light"]{--paper:#EEF4FB;--surface:#FFFFFF;--panel:#0A1C38;--ink:#0A1E3B;
  --slate:#53637E;--line:#D8E3F1;--blue:#1746B0;--blue-bright:#1E5AE6;--hydro:#12B0E8;
  --shadow:0 18px 40px -18px rgba(10,40,90,.35);}

*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);
  line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--blue-bright);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.wrap-read{max-width:var(--maxw-read);margin:0 auto;padding:0 22px}

/* wordmark */
.mark{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:1.3rem;letter-spacing:-.02em}
.mark .vac{color:var(--blue-bright)} .mark .frota{color:var(--ink)}
.mark svg{width:30px;height:30px;flex:none;color:var(--blue-bright)}

/* nav */
header.nav{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--paper) 88%,transparent);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:66px}
.nav-cta{display:flex;align-items:center;gap:10px}
.nav-link{font-weight:600;color:var(--slate);font-size:.95rem}
.nav-link:hover{color:var(--ink);text-decoration:none}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:.95rem;
  border-radius:12px;padding:11px 18px;cursor:pointer;border:1.5px solid transparent;
  transition:transform .15s ease,box-shadow .2s ease,background .2s ease}
.btn:hover{transform:translateY(-1px);text-decoration:none}
.btn-primary{background:var(--blue-bright);color:#fff;box-shadow:0 10px 22px -10px var(--blue-bright)}
.btn-primary:hover{background:var(--blue)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:transparent}
.btn-ghost:hover{border-color:var(--blue-bright);color:var(--blue-bright)}
@media(max-width:640px){.nav-link{display:none}}

/* blog home hero */
.blog-hero{text-align:center;padding:56px 0 26px}
.eyebrow{font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.16em;color:var(--blue-bright)}
.blog-hero h1{font-size:clamp(2rem,4.6vw,3rem);font-weight:800;letter-spacing:-.02em;margin:12px 0 0;line-height:1.1}
.blog-hero p{color:var(--slate);font-size:1.12rem;max-width:60ch;margin:16px auto 0}

/* cards grid */
.posts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;padding:34px 0 70px}
@media(max-width:900px){.posts-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.posts-grid{grid-template-columns:1fr}}
.post-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:transform .16s ease,border-color .2s ease}
.post-card:hover{transform:translateY(-3px);border-color:var(--blue-bright);text-decoration:none}
.post-card .tag{align-self:flex-start;font-size:.72rem;font-weight:700;text-transform:uppercase;
  letter-spacing:.08em;color:var(--blue-bright);background:color-mix(in srgb,var(--blue-bright) 10%,transparent);
  border:1px solid color-mix(in srgb,var(--blue-bright) 24%,var(--line));padding:5px 10px;border-radius:999px}
.post-card h2{font-size:1.16rem;font-weight:800;letter-spacing:-.01em;margin:14px 0 0;line-height:1.25;color:var(--ink)}
.post-card p{color:var(--slate);font-size:.96rem;margin:10px 0 0;flex:1}
.post-card .more{margin-top:16px;font-weight:700;color:var(--blue-bright);font-size:.95rem}

/* article */
.post{background:var(--surface);border:1px solid var(--line);border-radius:22px;
  box-shadow:var(--shadow);padding:clamp(26px,4vw,54px);margin:34px 0 60px}
.crumbs{font-size:.9rem;color:var(--slate);margin-bottom:14px}
.post h1{font-size:clamp(1.7rem,3.8vw,2.5rem);font-weight:800;letter-spacing:-.02em;line-height:1.12}
.post .meta{color:var(--slate);font-size:.92rem;margin-top:12px}
.post .lead{font-size:1.16rem;color:var(--ink);font-weight:500;margin:24px 0 0}
.post h2{font-size:1.4rem;font-weight:800;letter-spacing:-.01em;margin:34px 0 0}
.post h3{font-size:1.12rem;font-weight:700;margin:24px 0 0}
.post p{margin:14px 0 0}
.post ul,.post ol{margin:14px 0 0;padding-left:22px}
.post li{margin:8px 0}
.post strong{color:var(--ink)}
.callout{background:color-mix(in srgb,var(--blue-bright) 7%,transparent);
  border:1px solid color-mix(in srgb,var(--blue-bright) 22%,var(--line));border-left:4px solid var(--blue-bright);
  border-radius:12px;padding:16px 18px;margin:24px 0 0;color:var(--ink)}
.callout.warn{background:color-mix(in srgb,var(--amber) 9%,transparent);
  border-color:color-mix(in srgb,var(--amber) 30%,var(--line));border-left-color:var(--amber)}
.cta-box{margin:34px 0 0;background:linear-gradient(160deg,var(--panel),#12305f);
  border-radius:18px;padding:28px;color:#eaf2ff;text-align:center}
.cta-box h3{font-size:1.3rem;font-weight:800;color:#fff;margin:0}
.cta-box p{color:#c6d7f0;margin:10px 0 18px}

/* footer */
footer{border-top:1px solid var(--line);background:var(--surface);padding:34px 0;margin-top:20px}
.foot-top{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:14px}
footer p{color:var(--slate);font-size:.86rem;margin:0}
.btn-good{background:var(--good);color:#fff}
.btn-good:hover{filter:brightness(1.05)}


/* Leia também (SEO — links internos) */
.leia-tambem{max-width:760px;margin:6px auto 56px;padding:0 22px}
.leia-tambem h2{font-size:1.25rem;margin:0 0 14px}
.leia-tambem ul{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.leia-tambem li{margin:0}
.leia-tambem a{display:block;padding:14px 16px;border:1px solid rgba(0,0,0,.12);border-radius:12px;font-weight:600;transition:.15s ease}
.leia-tambem a:hover{border-color:currentColor;text-decoration:none;transform:translateY(-1px)}
@media (prefers-color-scheme:dark){.leia-tambem a{border-color:rgba(255,255,255,.18)}}