/* topx-brasil.com — Central TopX Brasil. Layout B: hero centralizado, navegação em pílulas, artigo em coluna única com índice lateral fixo. */
:root{
  --tb-bg:#090F1E;
  --tb-bg2:#0d1527;
  --tb-surf:#111A2B;
  --tb-surf2:#17233a;
  --tb-line:rgba(255,255,255,.09);
  --tb-text:#e8ecf6;
  --tb-mute:#aeb7cc;
  --tb-acc:#FF2400;
  --tb-acc-d:#e01d00;
  --tb-acc-l:#ff7a63;
  --tb-gold:#ffc24a;
  --tb-head:Archivo,"Segoe UI",Arial,sans-serif;
  --tb-body:"Nunito Sans","Segoe UI",system-ui,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--tb-bg);color:var(--tb-text);font:400 17px/1.7 var(--tb-body);overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--tb-acc-l)}
a:hover{color:#fff}
.shell,.tb-shell{width:100%;max-width:1160px;margin:0 auto;padding:0 20px}

/* ---------- cabeçalho ---------- */
.top{position:sticky;top:0;z-index:30;background:rgba(9,15,30,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--tb-line)}
.top-in{display:flex;align-items:center;gap:20px;padding-top:10px;padding-bottom:10px}
.top-in>a:first-child{flex:none;display:block;line-height:0}
.top nav{flex:1;display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.top nav a{display:inline-flex;align-items:center;min-height:44px;padding:0 20px;border-radius:999px;background:rgba(255,255,255,.07);color:#fff;text-decoration:none;font:700 15.6px/1 var(--tb-head);letter-spacing:.01em;transition:background .15s}
.top nav a:hover{background:var(--tb-acc-d)}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 26px;border-radius:999px;border:0;text-decoration:none;font:700 16px/1.1 var(--tb-head);text-align:center;cursor:pointer}
.btn-main{background:linear-gradient(180deg,#ff3a1a,var(--tb-acc-d));color:#fff;box-shadow:0 8px 24px -8px rgba(255,36,0,.65);transition:transform .15s,box-shadow .15s}
.btn-main:hover{color:#fff;transform:translateY(-2px);box-shadow:0 12px 28px -8px rgba(255,36,0,.85)}
.top .btn-main{flex:none}
.tb-big{min-height:54px;padding:0 34px;font-size:17.5px}

/* ---------- hero ---------- */
.tb-hero{position:relative;overflow:hidden;text-align:center;padding:76px 0 64px;isolation:isolate}
.tb-hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2}
.tb-hero::after{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(ellipse at 50% 35%,rgba(9,15,30,.15),rgba(9,15,30,.62) 75%),linear-gradient(180deg,rgba(9,15,30,0) 0%,var(--tb-bg) 100%)}
.tb-hero-in{max-width:880px}
.tb-kicker{display:inline-block;margin:0 0 18px;padding:7px 16px;border-radius:999px;background:rgba(9,15,30,.6);border:1px solid rgba(255,255,255,.22);color:#fff;font:700 15.6px/1.3 var(--tb-head);letter-spacing:.06em;text-transform:uppercase}
.tb-hero h1{margin:0 0 20px;font:800 clamp(31px,5.4vw,56px)/1.08 var(--tb-head);letter-spacing:-.015em;color:#fff;text-wrap:balance;text-shadow:0 2px 24px rgba(0,0,0,.45)}
.tb-lead{margin:0 auto 28px;max-width:720px;font-size:clamp(17.5px,2.1vw,20px);line-height:1.65;color:#f1f3fa;text-shadow:0 1px 14px rgba(0,0,0,.5)}
.tb-acts{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-bottom:18px}
.tb-ghost{display:inline-flex;align-items:center;justify-content:center;min-height:54px;padding:0 28px;border-radius:999px;border:2px solid rgba(255,255,255,.6);color:#fff;text-decoration:none;font:700 16.5px/1 var(--tb-head);background:rgba(9,15,30,.35)}
.tb-ghost:hover{background:#fff;color:var(--tb-bg)}
.tb-ad{display:block;margin:0;font:600 15.6px/1.4 var(--tb-body);letter-spacing:.03em;color:var(--tb-mute)}
.tb-hero .tb-ad{color:#e5e9f4}
.tb-date{display:inline-block;margin:14px 0 0;padding:5px 14px;border-radius:999px;background:rgba(0,0,0,.35);font:600 15.6px/1.4 var(--tb-body);color:#fff}
.tb-facts{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:34px 0 0;padding:0;list-style:none}
.tb-facts li{padding:9px 18px;border-radius:999px;background:rgba(9,15,30,.62);border:1px solid rgba(255,255,255,.2);font:700 15.6px/1.2 var(--tb-head);color:#fff}
.tb-home .tb-hero{padding:96px 0 84px}
.tb-hero-doc{padding:56px 0 40px}

/* ---------- artigo + índice ---------- */
.tb-wrap{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:56px;align-items:start;padding-top:12px;padding-bottom:72px}
.tb-wrap-doc{grid-template-columns:minmax(0,760px);justify-content:center}
.tb-art{min-width:0;max-width:760px}
.tb-art section[id],.tb-faq{scroll-margin-top:92px}
.tb-art section{margin-top:44px}
.tb-art h2{position:relative;margin:0 0 16px;padding-top:20px;font:800 clamp(24px,3.2vw,32px)/1.18 var(--tb-head);letter-spacing:-.01em;color:#fff;text-wrap:balance}
.tb-art h2::before{content:"";position:absolute;top:0;left:0;width:44px;height:5px;border-radius:5px;background:var(--tb-acc)}
.tb-art p{margin:0 0 16px;color:#d5dbea}
.tb-art strong,.tb-art b{color:#fff}
.tb-art a{text-underline-offset:3px;text-decoration-thickness:1.5px}

.tb-steps{list-style:none;counter-reset:tbs;margin:20px 0;padding:0}
.tb-steps li{counter-increment:tbs;position:relative;margin:0 0 12px;padding:14px 18px 14px 66px;background:var(--tb-surf);border-radius:16px;color:#d9dfed}
.tb-steps li::before{content:counter(tbs);position:absolute;left:16px;top:50%;transform:translateY(-50%);width:36px;height:36px;border-radius:50%;background:var(--tb-acc-d);color:#fff;display:grid;place-items:center;font:800 17px/1 var(--tb-head)}
.tb-list{list-style:none;margin:16px 0 20px;padding:0}
.tb-list li{position:relative;margin:0 0 10px;padding-left:28px;color:#d5dbea}
.tb-list li::before{content:"";position:absolute;left:4px;top:.62em;width:10px;height:10px;border-radius:3px;background:var(--tb-acc);transform:rotate(45deg)}

.tb-tablewrap{margin:22px 0;border-radius:18px;background:var(--tb-surf);overflow:hidden}
.tb-table{width:100%;border-collapse:collapse;font-size:16px;line-height:1.5}
.tb-table th{padding:14px 18px;text-align:left;background:#7c1608;color:#fff;font:700 15.6px/1.3 var(--tb-head);letter-spacing:.04em;text-transform:uppercase}
.tb-table td{padding:14px 18px;vertical-align:top;color:#d9dfed;border-top:1px solid var(--tb-line)}
.tb-table td:first-child{color:#fff;font-weight:700;width:26%}

.tb-fig{margin:26px 0 8px}
.tb-fig img{width:100%;max-width:620px;margin:0 auto;border-radius:22px;box-shadow:0 22px 50px -22px rgba(255,36,0,.55)}

.tb-mid{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:48px 0 4px;padding:22px 26px;border-radius:22px;background:linear-gradient(100deg,#3a0e0a 0%,var(--tb-surf) 70%);border-left:6px solid var(--tb-acc)}
.tb-mid strong{display:block;margin-bottom:4px;font:700 18.5px/1.3 var(--tb-head)}
.tb-mid .btn{flex:none}

.tb-note{display:flex;align-items:center;gap:22px;margin:26px 0;padding:20px 24px;border-radius:22px;background:var(--tb-surf)}
.tb-note img{flex:none;width:92px;height:auto}
.tb-note p{margin:0}

.tb-duo{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:20px 0}
.tb-duo>div{padding:20px 22px 8px;border-radius:20px;background:var(--tb-surf)}
.tb-duo h3{margin:0 0 12px;font:800 18.5px/1.25 var(--tb-head);color:#fff}
.tb-duo>div:first-child{border-top:4px solid #2fbf71}
.tb-duo>div:last-child{border-top:4px solid var(--tb-acc)}

.tb-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:20px 0}
.tb-card{display:block;padding:20px 22px;border-radius:20px;background:var(--tb-surf);border-top:4px solid var(--tb-acc);text-decoration:none;color:var(--tb-text);transition:transform .15s,background .15s}
.tb-card:hover{transform:translateY(-3px);background:var(--tb-surf2);color:var(--tb-text)}
.tb-card b{display:block;margin-bottom:4px;font:800 19px/1.25 var(--tb-head);color:#fff}
.tb-card span{display:block;color:var(--tb-mute);font-size:16px;line-height:1.5}

.tb-quote{margin:20px 0;padding:18px 22px;border-radius:0 18px 18px 0;background:var(--tb-surf);border-left:5px solid var(--tb-gold);color:#e9edf7;font-style:italic}

.tb-faq details{margin:0 0 10px;border-radius:16px;background:var(--tb-surf);overflow:hidden}
.tb-faq summary{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:60px;padding:10px 20px;cursor:pointer;list-style:none}
.tb-faq summary::-webkit-details-marker{display:none}
.tb-faq summary h3{margin:0;font:700 17.5px/1.35 var(--tb-head);color:#fff}
.tb-faq summary i{flex:none;width:32px;height:32px;border-radius:50%;background:var(--tb-acc-d);color:#fff;display:grid;place-items:center;font:700 22px/1 var(--tb-head);font-style:normal;transition:transform .2s}
.tb-faq details[open] summary i{transform:rotate(45deg)}
.tb-faq details p{margin:0;padding:0 20px 18px;color:#d5dbea}
.tb-faq summary:hover{background:var(--tb-surf2)}

.tb-end{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-top:56px!important;padding:30px 34px;border-radius:28px;background:radial-gradient(circle at 90% 10%,rgba(255,194,74,.28),transparent 45%),linear-gradient(120deg,#5c0f06 0%,#c21700 60%,var(--tb-acc) 100%)}
.tb-end h2{margin:0 0 8px;padding-top:0;font-size:clamp(23px,3vw,30px)}
.tb-end h2::before{display:none}
.tb-end p{color:#ffe9e4;margin-bottom:8px}
.tb-end .tb-ad{color:#ffd9d1}
.tb-end .btn-main{flex:none;background:#fff;color:#7c1608;box-shadow:0 10px 26px -10px rgba(0,0,0,.6)}
.tb-end .btn-main:hover{background:#ffe9e4;color:#5c0f06}

/* índice lateral */
.tb-toc{position:sticky;top:96px;align-self:start}
.tb-toc details{padding:20px 20px 14px;border-radius:22px;background:var(--tb-surf)}
.tb-toc summary{cursor:pointer;list-style:none;margin-bottom:10px;font:800 14.5px/1.3 var(--tb-head);letter-spacing:.09em;text-transform:uppercase;color:var(--tb-gold)}
.tb-toc summary::-webkit-details-marker{display:none}
.tb-toc ol{list-style:none;margin:0;padding:0;counter-reset:tbt}
.tb-toc li{counter-increment:tbt}
.tb-toc a{display:flex;gap:10px;align-items:baseline;padding:7px 0;color:#d5dbea;text-decoration:none;font-size:15.6px;line-height:1.35;border-bottom:1px solid var(--tb-line)}
.tb-toc li:last-child a{border-bottom:0}
.tb-toc a::before{content:counter(tbt,decimal-leading-zero);flex:none;font:700 13px/1 var(--tb-head);color:var(--tb-acc-l)}
.tb-toc a:hover{color:#fff}

/* ---------- rodapé ---------- */
.foot{background:#060b16;border-top:1px solid var(--tb-line);padding:44px 0 40px;color:var(--tb-mute)}
.foot-top{display:flex;flex-wrap:wrap;gap:22px 36px;align-items:center;margin-bottom:26px}
.foot-top>a{line-height:0;flex:none}
.foot nav{display:flex;flex-wrap:wrap;gap:8px}
.foot nav a{display:inline-flex;align-items:center;min-height:40px;padding:0 16px;border-radius:999px;background:rgba(255,255,255,.06);color:#e8ecf6;text-decoration:none;font:600 15.5px/1 var(--tb-body)}
.foot nav a:hover{background:var(--tb-acc-d);color:#fff}
.foot p{margin:0 0 10px;max-width:860px;font-size:15.5px;line-height:1.6}

/* ---------- tablet e celular ---------- */
@media (max-width:1020px){
  .tb-wrap{grid-template-columns:minmax(0,1fr);gap:8px}
  .tb-toc{position:static;order:-1;margin-top:8px}
  .tb-toc details{padding:16px 16px 12px;border-radius:18px}
  .tb-toc ol{display:flex;flex-wrap:wrap;gap:8px}
  .tb-toc a{padding:8px 14px;border:0;border-radius:999px;background:var(--tb-surf2);align-items:center;min-height:40px}
  .tb-toc a::before{display:none}
  .tb-art{max-width:none}
}
@media (max-width:760px){
  body{font-size:17px}
  .top{position:static}
  .top-in{flex-wrap:wrap;gap:10px 12px;padding-top:12px}
  .top nav{order:3;flex:1 1 100%;justify-content:flex-start;gap:8px}
  .top nav a{padding:0 12px}
  .top .btn-main{margin-left:auto;min-height:44px;padding:0 20px}
  .tb-hero{padding:52px 0 44px}
  .tb-home .tb-hero{padding:56px 0 48px}
  .tb-hero-doc{padding:40px 0 32px}
  .tb-acts{flex-direction:column;align-items:stretch}
  .tb-big,.tb-ghost{width:100%}
  .tb-facts{margin-top:26px}
  .tb-art section{margin-top:36px}
  .tb-steps li{padding:14px 14px 14px 58px}
  .tb-steps li::before{left:12px}
  .tb-duo,.tb-cards{grid-template-columns:1fr}
  .tb-mid,.tb-end{flex-direction:column;align-items:stretch;text-align:left;padding:22px}
  .tb-mid .btn,.tb-end .btn{width:100%}
  .tb-note{flex-direction:column;align-items:flex-start;gap:12px}
  .tb-note img{width:84px}
  /* tabelas viram cartões */
  .tb-table,.tb-table tbody,.tb-table tr,.tb-table td{display:block;width:100%}
  .tb-table thead{display:none}
  .tb-table tr{padding:14px 18px;border-top:1px solid var(--tb-line)}
  .tb-table tr:first-child{border-top:0}
  .tb-table td{padding:2px 0;border:0}
  .tb-table td:first-child{width:100%;font:800 17.5px/1.3 var(--tb-head);margin-bottom:4px}
  .foot{padding:36px 0}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}