/* RM · sistema visual da seção Materiais.
   Compartilhado pelo hub e por todas as peças, para escalar sem duplicar CSS. */

:root{
  --navy:#201F53; --deep:#13122f; --sig:#17B39A; --sig-2:#5FE8D1; --sig-deep:#0E8C79;
  --paper:#FCFCFE; --ink:#191B2E; --muted:#5f6580; --line:#E6E9F3; --mist:#F1F3FA;
  --sans:'Satoshi',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--sans);color:var(--ink);background:var(--paper);line-height:1.7;-webkit-font-smoothing:antialiased}
/* mesma regra tipografica da home: peso 700, entrelinha fechada, tracking negativo */
h1,h2,h3{line-height:1.06;letter-spacing:-.03em;font-weight:700}
a{color:inherit}
.wrap{width:min(1180px,92%);margin:0 auto}

/* cabeçalho */
header{background:var(--navy);padding:18px 0;position:sticky;top:0;z-index:20}
nav{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:11px;color:#fff;text-decoration:none;flex-shrink:0}
.brand .hub{width:34px;height:34px;color:#fff}
.brand .name{font-weight:900;font-size:1.35rem;letter-spacing:-.02em}
.nav-links{display:flex;gap:26px;flex-wrap:wrap}
.nav-links a{color:rgba(255,255,255,.82);text-decoration:none;font-size:.94rem;font-weight:500;transition:color .16s}
.nav-links a:hover{color:#fff}
.nav-links a.on{color:var(--sig-2)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:100px;
     font-weight:700;text-decoration:none;transition:transform .16s,box-shadow .16s,background .16s;white-space:nowrap}
.btn-nav{background:var(--sig);color:#08211d;padding:10px 20px;font-size:.9rem}
.btn-nav:hover{background:var(--sig-2);transform:translateY(-1px)}
.btn-primary{background:var(--sig);color:#08211d;padding:16px 30px;font-size:1.02rem;box-shadow:0 10px 30px rgba(23,179,154,.28)}
.btn-primary:hover{background:var(--sig-2);transform:translateY(-2px)}
.btn-ghost{border:1px solid rgba(255,255,255,.3);color:#fff;padding:16px 28px;font-size:1.02rem}
.btn-ghost:hover{background:rgba(255,255,255,.08)}

.eyebrow{font-family:var(--mono);font-size:.74rem;font-weight:500;letter-spacing:.08em;
         display:inline-flex;align-items:center;gap:9px;margin-bottom:16px;color:var(--sig-deep)}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--sig);box-shadow:0 0 0 4px rgba(23,179,154,.16)}

/* topo escuro (hub e artigo) */
.top{background:var(--navy);color:#fff;padding:64px 0 68px;position:relative;overflow:hidden}
.top::after{content:"";position:absolute;right:-120px;top:-90px;width:440px;height:440px;border-radius:50%;
            background:radial-gradient(circle,rgba(23,179,154,.18),transparent 68%)}
.top .inner{position:relative;z-index:2;max-width:780px}
.top .eyebrow{color:var(--sig-2)}
.top h1{font-size:clamp(2.4rem,5.4vw,3.9rem);margin-bottom:20px;max-width:16ch}
.top h1 em{font-style:normal;color:var(--sig-2)}
.top .sub{font-size:clamp(1.02rem,2.1vw,1.2rem);color:rgba(255,255,255,.8);max-width:660px;line-height:1.6}
.crumbs{font-family:var(--mono);font-size:.76rem;color:rgba(255,255,255,.55);margin-bottom:16px;position:relative;z-index:2}
.crumbs a{color:rgba(255,255,255,.75);text-decoration:none}
.crumbs a:hover{color:var(--sig-2)}
.meta{font-family:var(--mono);font-size:.78rem;color:rgba(255,255,255,.55);margin-top:22px;
      display:flex;gap:18px;flex-wrap:wrap;position:relative;z-index:2}

/* corpo do artigo */
.doc{width:min(760px,92%);margin:0 auto;padding:56px 0 40px}
.doc p{margin-bottom:17px;color:#3d4257;font-size:1.06rem}
.doc p strong{color:var(--navy)}
.doc h2{font-size:clamp(1.65rem,3.6vw,2.3rem);color:var(--navy);
        margin:48px 0 16px;padding-left:16px;border-left:3px solid var(--sig)}
.doc h3{font-size:1.18rem;color:var(--navy);margin:32px 0 8px}
.doc ul,.doc ol{margin:0 0 18px 0;padding-left:0;list-style:none}
.doc li{position:relative;padding-left:26px;margin-bottom:9px;color:#3d4257;font-size:1.04rem}
.doc li::before{content:"";position:absolute;left:6px;top:.78em;width:7px;height:7px;border-radius:50%;background:var(--sig);opacity:.6}
.doc ol{counter-reset:n}
.doc ol li{counter-increment:n}
.doc ol li::before{content:counter(n);width:auto;height:auto;background:none;border-radius:0;left:2px;top:0;
                   font-family:var(--mono);font-size:.82rem;font-weight:600;color:var(--sig-deep);opacity:1}
.doc a{color:var(--sig-deep);text-decoration:underline;text-underline-offset:3px}

/* destaque */
.callout{background:var(--mist);border:1px solid var(--line);border-left:3px solid var(--sig);
         border-radius:12px;padding:22px 24px;margin:26px 0}
.callout p:last-child{margin-bottom:0}
.callout .t{font-family:var(--mono);font-size:.75rem;letter-spacing:.06em;color:var(--sig-deep);margin-bottom:8px}

/* tabela */
.tbl-scroll{overflow-x:auto;margin:24px 0;border:1px solid var(--line);border-radius:12px}
table{border-collapse:collapse;width:100%;min-width:440px;font-size:.97rem}
th,td{text-align:left;padding:13px 16px;border-bottom:1px solid var(--line)}
th{background:var(--mist);font-weight:700;color:var(--navy);font-size:.88rem}
tr:last-child td{border-bottom:none}
td.num{font-family:var(--mono);font-weight:600;color:var(--navy);white-space:nowrap}

/* faq */
.faq{margin:26px 0}
.faq details{border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin-bottom:10px;background:#fff}
.faq summary{cursor:pointer;font-weight:700;color:var(--navy);list-style:none;font-size:1.02rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--sig);font-weight:900}
.faq details[open] summary::after{content:"−"}
.faq details p{margin:12px 0 0;font-size:1.01rem}

/* leia também: liga as pecas entre si */
.relacionados{margin:46px 0 0;padding-top:30px;border-top:1px solid var(--line)}
.rel-cap{font-family:var(--mono);font-size:.74rem;letter-spacing:.06em;color:var(--sig-deep);margin-bottom:16px}
.rel-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:14px}
.rel-card{display:flex;flex-direction:column;gap:6px;background:#fff;border:1px solid var(--line);
          border-radius:14px;padding:18px 20px;text-decoration:none;
          transition:transform .16s,box-shadow .16s,border-color .16s}
.rel-card:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(32,31,83,.08);border-color:rgba(23,179,154,.45)}
.rel-card .tag{font-family:var(--mono);font-size:.68rem;letter-spacing:.06em;color:var(--sig-deep)}
.rel-card .t{font-weight:700;color:var(--navy);font-size:1.02rem;line-height:1.2;letter-spacing:-.02em}
.rel-card .d{font-size:.88rem;color:var(--muted);line-height:1.45}

/* cta dentro do artigo */
.cta-box{background:var(--deep);color:#fff;border-radius:18px;padding:clamp(28px,4.4vw,40px);margin:44px 0 10px;
         position:relative;overflow:hidden}
.cta-box::after{content:"";position:absolute;left:-70px;bottom:-100px;width:300px;height:300px;border-radius:50%;
                background:radial-gradient(circle,rgba(23,179,154,.16),transparent 68%)}
.cta-box .inner{position:relative;z-index:2}
.cta-box h2{color:#fff;border:none;padding:0;margin:0 0 12px;font-size:clamp(1.5rem,3vw,2rem)}
.cta-box p{color:rgba(255,255,255,.8);margin-bottom:22px}

/* hub: cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:22px;padding:56px 0 20px}
.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px 26px;
      text-decoration:none;display:flex;flex-direction:column;transition:transform .16s,box-shadow .16s,border-color .16s}
.card:hover{transform:translateY(-3px);box-shadow:0 14px 36px rgba(32,31,83,.09);border-color:rgba(23,179,154,.4)}
.card .tag{font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;color:var(--sig-deep);margin-bottom:12px}
.card h2{font-size:1.32rem;color:var(--navy);line-height:1.12;margin-bottom:10px}
.card p{font-size:.97rem;color:var(--muted);flex:1;line-height:1.6}
.card .go{font-family:var(--mono);font-size:.8rem;color:var(--sig-deep);margin-top:16px}

/* seção final do hub */
.closing{background:var(--mist);padding:56px 0}
.closing .inner{max-width:660px}
.closing h2{font-size:clamp(1.9rem,4vw,3rem);color:var(--navy);margin-bottom:14px}
.closing p{color:var(--muted);margin-bottom:22px;line-height:1.6}

/* rodapé */
footer{background:var(--deep);color:rgba(255,255,255,.66);padding:48px 0 30px}
footer .fcols{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:32px;margin-bottom:34px}
footer .brand{margin-bottom:12px}
footer p{font-size:.94rem}
footer .mono{font-family:var(--mono);font-size:.86rem}
footer .fine{font-family:var(--mono);font-size:.76rem;color:rgba(255,255,255,.45);
             display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
             border-top:1px solid rgba(255,255,255,.1);padding-top:20px}
footer a{text-decoration:underline;text-underline-offset:3px}

/* assinatura AIVEXOR */
.feito-por{margin-top:20px;padding-top:16px;border-top:1px solid rgba(255,255,255,.07);
           display:flex;justify-content:center;align-items:center}
.feito-por a{display:inline-flex;align-items:center;gap:9px;text-decoration:none;
             font-family:var(--mono);font-size:.72rem;letter-spacing:.04em;
             color:rgba(255,255,255,.38);transition:color .18s}
.feito-por a:hover{color:rgba(255,255,255,.72)}
.feito-por img{height:16px;width:auto;opacity:.5;transition:opacity .18s}
.feito-por a:hover img{opacity:.95}

@media(max-width:760px){
  header{position:static}
  nav{gap:12px}
  .nav-links{gap:16px;order:3;width:100%}
  .nav-links a{font-size:.86rem}
  .top{padding:46px 0 50px}
  .doc{padding:42px 0 30px}
  .grid{padding:40px 0 16px;gap:16px}
}