/* ===== RPX Blog — design system (herda a identidade do site) ===== */
@property --angle{syntax:'<angle>';initial-value:0deg;inherits:false;}
:root{
  --bg:#040507;--bg-2:#070910;--bg-card:#0a0d16;
  --blue:#2E90FF;--blue-soft:#5BA9FF;--blue-deep:#1c6fd6;--cyan:#7fe3ff;
  --blue-dim:rgba(46,144,255,.1);--blue-border:rgba(46,144,255,.18);
  --text:#f4f7fb;--muted:#7d8aa3;--faint:#48526a;
  --line:rgba(255,255,255,.07);--line-2:rgba(255,255,255,.045);
  --ease:cubic-bezier(.16,1,.3,1);
  --mono:'Satoshi',sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;overflow-x:hidden;}
body{background:var(--bg);color:var(--text);font-family:'Satoshi',sans-serif;font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:clip;min-height:100vh;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
h1,h2,h3,h4{text-wrap:balance;letter-spacing:-.02em;line-height:1.1;}
::selection{background:#34C2FF;color:#000;}
::-webkit-scrollbar{width:5px;}::-webkit-scrollbar-track{background:var(--bg);}::-webkit-scrollbar-thumb{background:var(--blue);border-radius:3px;}
.ivy{font-family:'ivypresto-display',serif;font-style:italic;font-weight:300;color:var(--blue);}
.container{max-width:1200px;margin:0 auto;padding:0 56px;position:relative;}
@media(max-width:768px){.container{padding:0 20px;}}

/* topbar */
.b-topbar{position:fixed;top:0;left:0;width:100%;z-index:1000;display:flex;align-items:center;justify-content:space-between;padding:20px 56px;transition:padding .4s var(--ease),background .4s var(--ease),border-color .4s;border-bottom:1px solid transparent;}
.b-topbar.scrolled{background:rgba(4,5,7,.75);backdrop-filter:blur(20px) saturate(160%);-webkit-backdrop-filter:blur(20px) saturate(160%);border-bottom-color:var(--line-2);padding:14px 56px;}
.b-brand img{height:24px;width:auto;display:block;}
.b-nav{display:flex;align-items:center;gap:26px;font-size:.92rem;color:var(--muted);}
.b-nav a{transition:color .25s;}
.b-nav a:hover{color:var(--text);}
.b-cta{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border:none;border-radius:100px;background:var(--blue);color:#fff;font-weight:700;font-size:.9rem;letter-spacing:-.01em;text-decoration:none;box-shadow:0 6px 22px -6px rgba(46,144,255,.5),inset 0 1px 0 rgba(255,255,255,.2);transition:transform .35s var(--ease),box-shadow .35s,background .3s;}
.b-cta:hover{transform:translateY(-2px);background:var(--blue-soft);box-shadow:0 14px 32px -8px rgba(46,144,255,.75),inset 0 1px 0 rgba(255,255,255,.25);}
/* blindagem: dentro do corpo do post o link-botão NÃO herda estilo de link */
.b-prose a.b-cta{color:#fff!important;text-decoration:none!important;}
.b-prose a.b-cta:hover{color:#fff!important;}
@media(max-width:768px){.b-topbar{padding:16px 20px;}.b-nav{gap:16px;font-size:.8rem;}.b-nav .b-nav-link{display:none;}}

/* hero do índice */
.b-hero{padding:170px 0 60px;text-align:center;position:relative;}
.b-hero::before{content:'';position:absolute;left:50%;top:0;transform:translateX(-50%);width:min(900px,120vw);height:420px;z-index:-1;pointer-events:none;
  background:radial-gradient(50% 60% at 50% 0,rgba(46,144,255,.18),transparent 70%);}
.b-kicker{font-family:var(--mono);font-size:.7rem;font-weight:600;letter-spacing:.24em;text-transform:uppercase;color:var(--blue);}
.b-hero h1{font-size:clamp(2.6rem,7vw,5rem);font-weight:700;margin:16px 0 18px;}
.b-hero p{color:var(--muted);font-size:1.1rem;max-width:560px;margin:0 auto;}

/* grid de posts */
.b-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:28px;padding:30px 0 120px;}
.b-card{display:flex;flex-direction:column;background:linear-gradient(180deg,#0b1020,#070a12);border:1px solid var(--line);border-radius:20px;overflow:hidden;transition:transform .4s var(--ease),border-color .35s,box-shadow .4s;}
.b-card:hover{transform:translateY(-6px);border-color:var(--blue-border);box-shadow:0 40px 90px -50px rgba(0,0,0,.95);}
.b-card__img{aspect-ratio:16/9;width:100%;object-fit:cover;background:var(--bg-card);}
/* capa gráfica do card (sem foto) */
.b-card__cover{aspect-ratio:16/9;width:100%;position:relative;overflow:hidden;display:flex;align-items:flex-end;padding:20px;
  background:radial-gradient(135% 130% at 15% -10%,#16233d 0%,#0b1322 46%,#060910 100%);border-bottom:1px solid var(--line);}
.b-card__cover::before{content:'';position:absolute;inset:0;opacity:.45;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:30px 30px;-webkit-mask-image:radial-gradient(110% 100% at 0% 0%,#000,transparent 72%);mask-image:radial-gradient(110% 100% at 0% 0%,#000,transparent 72%);}
.b-card__cover::after{content:'';position:absolute;right:-12%;top:-45%;width:60%;height:150%;background:radial-gradient(circle at 70% 35%,rgba(46,144,255,.3),transparent 62%);}
.b-card__cover img{position:relative;z-index:1;height:20px;width:auto;}
.b-card__body{padding:24px 24px 28px;display:flex;flex-direction:column;flex:1;}
.b-card__tag{font-family:var(--mono);font-size:.64rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);margin-bottom:12px;}
.b-card__title{font-size:1.32rem;font-weight:700;line-height:1.22;margin-bottom:10px;}
.b-card__exc{color:var(--muted);font-size:.95rem;line-height:1.6;margin-bottom:18px;flex:1;}
.b-card__meta{display:flex;align-items:center;gap:10px;font-size:.8rem;color:var(--faint);margin-top:auto;}
.b-card__meta b{color:var(--blue-soft);font-weight:500;}

/* ===== artigo ===== */
.b-article{max-width:760px;margin:0 auto;padding:150px 0 40px;}
.b-breadcrumb{font-size:.82rem;color:var(--faint);margin-bottom:26px;}
.b-breadcrumb a:hover{color:var(--blue-soft);}
.b-article__tag{font-family:var(--mono);font-size:.68rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--blue);}
.b-article h1{font-size:clamp(2.1rem,5.5vw,3.3rem);font-weight:700;margin:14px 0 22px;}
.b-article__meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;color:var(--muted);font-size:.9rem;padding-bottom:28px;border-bottom:1px solid var(--line);margin-bottom:8px;}
.b-article__meta .av{width:38px;height:38px;border-radius:50%;object-fit:cover;border:1px solid var(--blue-border);}
.b-article__meta b{color:var(--text);font-weight:600;}
/* capa do post: mockup de um projeto real */
.b-article__hero{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:18px;border:1px solid var(--line);margin:30px 0 4px;box-shadow:0 40px 90px -50px rgba(0,0,0,.95);}

/* prose */
.b-prose{font-size:1.12rem;line-height:1.85;color:#d7deea;}
.b-prose>*+*{margin-top:1.25em;}
.b-prose h2{font-size:1.72rem;font-weight:700;color:var(--text);margin-top:1.9em;}
.b-prose h3{font-size:1.3rem;font-weight:700;color:var(--text);margin-top:1.5em;}
.b-prose a{color:var(--blue-soft);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--blue-border);transition:text-decoration-color .25s;}
.b-prose a:hover{text-decoration-color:var(--blue);}
.b-prose strong{color:var(--text);font-weight:700;}
.b-prose ul,.b-prose ol{padding-left:1.3em;}
.b-prose li{margin-top:.5em;}
.b-prose li::marker{color:var(--blue);}
.b-prose blockquote{border-left:3px solid var(--blue);padding:4px 0 4px 22px;color:var(--text);font-size:1.22rem;font-style:italic;}
.b-prose img{border-radius:14px;border:1px solid var(--line);margin:1.6em 0;}
.b-prose figcaption{font-size:.84rem;color:var(--faint);text-align:center;margin-top:8px;}

/* FAQ — mesmo componente do site principal */
.b-faq{margin-top:3em;border-top:1px solid var(--line);padding-top:2.2em;}
.b-faq h2{font-size:1.7rem;font-weight:700;margin-bottom:4px;}
.faq-list{display:flex;flex-direction:column;gap:10px;margin-top:28px;}
.faq-item{background:var(--bg-card);border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:border-color .35s,box-shadow .4s;}
.faq-item.open{border-color:var(--blue-border);box-shadow:0 16px 40px -18px rgba(46,144,255,.16);}
.faq-btn{width:100%;display:flex;align-items:center;justify-content:space-between;padding:22px 26px;background:none;border:none;color:var(--text);font-family:'Satoshi',sans-serif;font-size:.98rem;font-weight:600;cursor:pointer;text-align:left;gap:16px;letter-spacing:-.01em;}
.faq-icon{width:28px;height:28px;min-width:28px;border-radius:50%;background:rgba(46,144,255,.08);border:1px solid var(--blue-border);display:flex;align-items:center;justify-content:center;font-size:1.1rem;font-weight:300;line-height:1;transition:transform .55s cubic-bezier(.4,0,.2,1),background .35s;color:var(--blue);}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--blue);color:#fff;border-color:var(--blue);}
.faq-body{max-height:0;overflow:hidden;transition:max-height .55s cubic-bezier(.4,0,.2,1);}
.faq-item.open .faq-body{max-height:360px;}
.faq-body p{padding:0 26px 22px;font-size:.92rem;color:var(--muted);line-height:1.8;}

/* CTA no fim do post — compacto, alinhado à esquerda */
.b-postcta{margin:3em 0 1em;background:linear-gradient(105deg,rgba(46,144,255,.16),rgba(46,144,255,.03) 62%),var(--bg-card);border:none;border-radius:16px;padding:26px 28px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.b-postcta__t{flex:1;min-width:230px;}
.b-postcta h3{font-size:1.28rem;font-weight:700;margin-top:0;margin-bottom:5px;line-height:1.25;text-wrap:balance;}
.b-postcta p{color:var(--muted);font-size:.95rem;margin:0;line-height:1.55;text-wrap:balance;max-width:46ch;}
.b-postcta .b-cta{flex-shrink:0;padding:12px 24px;}
@media(max-width:560px){.b-postcta{padding:22px 20px;}.b-postcta .b-cta{width:100%;justify-content:center;}}

/* footer */
.b-footer{border-top:1px solid var(--line);padding:46px 0;margin-top:40px;}
.b-footer .container{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.b-footer img{height:22px;}
.b-footer small{color:var(--faint);font-size:.82rem;}
.b-footer a{color:var(--muted);font-size:.85rem;transition:color .25s;}
.b-footer a:hover{color:var(--blue-soft);}
@media(max-width:768px){.b-article{padding-top:120px;}.b-prose{font-size:1.06rem;}.b-footer .container{flex-direction:column;text-align:center;}}

/* reveal */
.reveal-up{opacity:0;transform:translateY(40px);filter:blur(5px);transition:opacity .9s var(--ease),transform .9s var(--ease),filter .9s var(--ease);}
.reveal-up.visible{opacity:1;transform:none;filter:blur(0);}
@media(prefers-reduced-motion:reduce){.reveal-up{opacity:1;transform:none;filter:none;}}