/* Formatador ABNT: papel A4 creme, tinta azul-marinho, lápis vermelho da margem. Ferramenta logo na primeira dobra. */
:root{
  --papel:#F6F2E9; --sf:#FFFDF8; --tinta:#1B2A4A; --mu:#5D6476; --ln:#E2DCCD; --lapis:#C8372D; --ok:#1F7A4D;
  --soft:#EAE4D6; --fd:"Source Serif 4",Georgia,serif; --fb:"Instrument Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,monospace; color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--papel:#12161F;--sf:#1A1F2B;--tinta:#E9ECF3;--mu:#A5ACBC;--ln:#2D3443;--lapis:#F07D72;--ok:#6CCB97;--soft:#232A38;color-scheme:dark}}
:root[data-theme="dark"]{--papel:#12161F;--sf:#1A1F2B;--tinta:#E9ECF3;--mu:#A5ACBC;--ln:#2D3443;--lapis:#F07D72;--ok:#6CCB97;--soft:#232A38;color-scheme:dark}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--papel);color:var(--tinta);font:16px/1.6 var(--fb);overflow-x:clip}
a{color:inherit}
.w{max-width:1120px;margin:0 auto;padding-left:max(18px,env(safe-area-inset-left,0px));padding-right:max(18px,env(safe-area-inset-right,0px))}
.estreito{max-width:780px}
h1,h2,h3{font-family:var(--fd);font-weight:700;line-height:1.1;text-wrap:balance;margin:0}
section{padding-block:64px}

/* topo */
.topo{background:linear-gradient(var(--papel),var(--papel)) padding-box;border-bottom:1px solid var(--ln)}
.barra{display:flex;justify-content:space-between;align-items:center;gap:12px;padding-block:18px}
.marca{display:flex;align-items:center;gap:10px;text-decoration:none;font-family:var(--fd);font-size:22px}
.marca b{color:var(--lapis)}
.barra nav{display:flex;gap:18px;align-items:center;font-weight:600;font-size:15px}
.barra nav a{text-decoration:none}
.pill{background:var(--tinta);color:var(--papel)!important;padding:8px 16px;border-radius:999px}
.heroi{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center;padding-block:40px 64px}
.selo{display:inline-block;margin:0 0 16px;font-size:13px;font-weight:600;color:var(--ok);background:color-mix(in srgb,var(--ok) 12%,transparent);padding:5px 12px;border-radius:999px}
.heroi h1{font-size:clamp(36px,5.4vw,64px);letter-spacing:-.01em;margin-bottom:18px}
.lead{font-size:19px;color:var(--mu);max-width:34em;margin:0 0 20px}
.normas{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:8px}
.normas li{font-family:var(--mono);font-size:13px;border:1px solid var(--ln);background:var(--sf);border-radius:8px;padding:4px 10px}

/* folha A4 com as margens */
.folha{margin:0;justify-self:center}
.pg{position:relative;width:min(300px,78vw);aspect-ratio:210/297;background:#FFFDF8;border-radius:4px;box-shadow:0 30px 50px -28px rgb(27 42 74 / .45),0 0 0 1px #E2DCCD;
  background-image:linear-gradient(#C8372D,#C8372D),linear-gradient(#C8372D,#C8372D);background-size:1px 100%,100% 1px;background-repeat:no-repeat;background-position:14.3% 0,0 10.1%}
.m{position:absolute;font-family:var(--mono);font-size:10px;color:#C8372D;background:#FFFDF8;padding:0 3px}
.m-top{top:3.5%;left:46%}.m-esq{top:48%;left:1.5%;writing-mode:vertical-rl}.m-dir{top:48%;right:1%;writing-mode:vertical-rl}.m-base{bottom:1.5%;left:46%}
.num{position:absolute;top:5%;right:9.5%;font:11px var(--mono);color:#1B2A4A}
.tx{position:absolute;inset:14% 9.5% 9% 14.3%;display:flex;flex-direction:column;gap:7px}
.tx b{font:700 11px var(--fb);color:#1B2A4A;margin-bottom:6px}
.tx i{display:block;height:5px;border-radius:3px;background:#C9CEDA}
.tx i:nth-of-type(1),.tx i:nth-of-type(5){margin-left:12%}
.tx i.c{width:62%}
.tx i.q{margin-left:38%;height:4px;background:#DCC9C4}
.folha figcaption{max-width:300px;font-size:13px;color:var(--mu);margin-top:12px;text-align:center}

/* ferramenta */
.ferr{padding-top:48px}
.passos{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr 1.25fr 1fr;gap:18px;align-items:start}
.cartao{background:var(--sf);border:1px solid var(--ln);border-radius:18px;padding:22px;min-width:0}
.cartao h2{display:flex;align-items:center;gap:10px;font-size:22px;margin-bottom:16px}
.cartao h2 span{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--tinta);color:var(--papel);font:700 15px var(--fb)}
.abas{display:flex;gap:6px;margin-bottom:12px;flex-wrap:wrap}
.abas button{font:600 14px var(--fb);color:var(--mu);background:none;border:1px solid var(--ln);border-radius:999px;padding:6px 12px;cursor:pointer}
.abas button[aria-selected="true"]{background:var(--tinta);color:var(--papel);border-color:var(--tinta)}
.drop{display:grid;place-items:center;text-align:center;gap:4px;min-height:190px;border:2px dashed var(--ln);border-radius:14px;padding:20px;cursor:pointer;background:var(--papel)}
.drop.sobre{border-color:var(--lapis);background:color-mix(in srgb,var(--lapis) 6%,var(--papel))}
.drop input{position:absolute;width:1px;height:1px;opacity:0}
.drop span{font-size:14px;color:var(--mu)}
.drop em{font-style:normal;font-weight:600;color:var(--ok);word-break:break-all}
.colar textarea{width:100%;font:14px/1.5 var(--mono)}
.colar small{color:var(--mu)}
.campos{display:grid;grid-template-columns:1fr 1fr;gap:10px 12px}
.f{display:grid;gap:4px;min-width:0}
.f.lg{grid-column:1/-1}
.f label{font-size:13px;font-weight:600;color:var(--mu)}
input,textarea,select{font:15px var(--fb);color:var(--tinta);background:var(--papel);border:1px solid var(--ln);border-radius:10px;padding:9px 11px;width:100%}
input:focus,textarea:focus,select:focus,button:focus-visible,a:focus-visible{outline:2px solid var(--lapis);outline-offset:1px}
.conferir{min-height:120px;margin-bottom:14px}
.vazio{color:var(--mu);font-size:14px;margin:0}
.nums{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}
.nums span{font-size:12px;background:var(--soft);border-radius:999px;padding:3px 9px}
.sumario{list-style:none;padding:0;margin:0;display:grid;gap:3px;font-size:14px;max-height:260px;overflow:auto}
.sumario li{display:flex;gap:8px;align-items:baseline}
.sumario .n2{padding-left:16px}.sumario .n3{padding-left:32px}
.nn{font-family:var(--mono);font-size:12px;color:var(--lapis);min-width:28px}
.sn{font-size:11px;color:var(--mu);border:1px solid var(--ln);border-radius:6px;padding:0 5px}
.aviso{font-size:13px;color:var(--lapis);margin:10px 0 0}
.bt{display:inline-flex;justify-content:center;width:100%;font:700 16px var(--fb);background:var(--lapis);color:#fff;border:0;border-radius:999px;padding:14px 18px;cursor:pointer;text-decoration:none}
.bt:disabled{opacity:.45;cursor:not-allowed}
.msg{font-size:14px;min-height:1.2em;margin:10px 0 0;color:var(--ok)}
.msg.erro{color:var(--lapis)}
.depois{margin-top:10px;font-size:14px;background:var(--papel);border-radius:12px;padding:12px 14px}
.depois ul{margin:6px 0 0;padding-left:18px}

/* faixa Pronto pra Estudar */
.pronto{padding-block:0}
.faixa{display:flex;justify-content:space-between;align-items:center;gap:18px;background:var(--tinta);color:var(--papel);border-radius:18px;padding:22px 26px}
.faixa div{display:grid;gap:2px}
.faixa span{opacity:.8}
.bt.claro{width:auto;background:var(--papel);color:var(--tinta);flex:none}

/* regras */
.regras h2,.faq h2{font-size:clamp(28px,4vw,40px);margin-bottom:24px}
.grade{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.grade article{background:var(--sf);border:1px solid var(--ln);border-radius:16px;padding:18px;display:grid;gap:6px;align-content:start;min-width:0}
.grade h3{font-size:19px}
.grade p{margin:0;font-size:15px;color:var(--mu)}
.grade small{font-family:var(--mono);font-size:11px;color:var(--lapis)}
.dica{margin-top:18px;border-left:4px solid var(--lapis);background:var(--sf);padding:14px 18px;border-radius:0 12px 12px 0}
.faq details{background:var(--sf);border:1px solid var(--ln);border-radius:14px;padding:14px 18px;margin-bottom:10px}
.faq summary{font-weight:700;cursor:pointer}
.faq details p{margin:10px 0 0;color:var(--mu)}
.rodape{border-top:1px solid var(--ln);padding-block:24px 40px;color:var(--mu);font-size:14px}
.rodape .w{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

@media (max-width:980px){.passos{grid-template-columns:1fr}.grade{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:760px){.heroi{grid-template-columns:1fr;padding-block:20px 36px}.folha{display:none}.marca{font-size:19px;white-space:nowrap}.pill{padding:7px 12px;font-size:14px;white-space:nowrap}.barra nav a:not(.pill){display:none}.faixa{flex-direction:column;align-items:flex-start}}
@media (max-width:480px){.grade,.campos{grid-template-columns:1fr}section{padding-block:48px}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}