/* Layout: moldura preta (topo e rodapé), leitura em branco, verde só para ação e resultado. */
:root{
  --frame:#0A0C0B; --frame-2:#141816; --paper:#FFFFFF; --soft:#F4F6F5;
  --ink:#111413; --text:#3B403D; --muted:#6A716D; --line:#E2E6E3;
  --neon:#9DFF3C; --green:#0B7A36; --green-2:#12A14A; --warn:#B45309; --bad:#B42318;
  --display:"Anton","Impact","Arial Narrow",sans-serif;
  --title:"Montserrat","Segoe UI",Arial,sans-serif;
  --body:"Inter","Segoe UI",Arial,sans-serif;
  --mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  color-scheme:light;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--text);font:16px/1.65 var(--body)}
a{color:var(--green)}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--green-2);outline-offset:2px}
.wrap{max-width:1080px;margin:0 auto;padding-inline:16px}

/* topo */
.top{background:var(--frame);color:#fff;border-bottom:1px solid #1f2522}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-block:14px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:#fff}
.brand svg{width:34px;height:34px;flex:none}
.brand b{font:800 21px/1 var(--title);letter-spacing:-.02em}
.brand b i{font-style:normal;color:var(--neon)}
.nav{display:flex;gap:6px 18px;flex-wrap:wrap}
.nav a{color:#C9D1CC;text-decoration:none;font:600 14px/1 var(--title)}
.nav a[aria-current]{color:var(--neon)}
.nav a:hover{color:#fff}

/* abertura */
.hero{background:var(--frame);color:#fff;padding-block:28px 72px}
.eyebrow{font:700 12px/1 var(--title);letter-spacing:.14em;text-transform:uppercase;color:var(--neon)}
.hero h1{font:400 clamp(40px,8vw,76px)/.95 var(--display);text-transform:uppercase;letter-spacing:.005em;margin:12px 0 14px;text-wrap:balance;color:#fff}
.hero p{max-width:60ch;margin:0;color:#C9D1CC;font-size:17px}

/* calculadora */
.calc{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);margin-top:-48px;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--paper);box-shadow:0 18px 40px -24px rgba(0,0,0,.35)}
.inputs{padding:24px;display:grid;gap:16px;align-content:start}
.inputs h2,.result h2{font:800 13px/1 var(--title);letter-spacing:.12em;text-transform:uppercase;margin:0 0 4px}
.inputs h2{color:var(--ink)}
.field{display:grid;gap:6px}
.field label{font:600 14px/1.3 var(--title);color:var(--ink)}
.field small{color:var(--muted);font-size:13px;line-height:1.4}
.box{display:flex;align-items:center;border:1.5px solid var(--line);border-radius:10px;background:var(--paper);transition:border-color .15s}
.box:focus-within{border-color:var(--green-2)}
.box span{padding:0 12px;color:var(--muted);font:600 15px var(--title)}
.box input{flex:1;min-width:0;border:0;background:transparent;padding:12px 12px 12px 0;font:600 18px/1 var(--body);color:var(--ink);font-variant-numeric:tabular-nums;outline:none}
.box.pre input{padding-left:0}
.box.suf input{padding-left:12px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.sample{font-size:13px;color:var(--muted);margin:0}
.reset{justify-self:start;background:none;border:1.5px solid var(--line);border-radius:999px;padding:8px 14px;font:600 13px var(--title);color:var(--text);cursor:pointer}
.reset:hover{border-color:var(--ink);color:var(--ink)}

.result{background:var(--frame);color:#fff;padding:24px;display:grid;gap:18px;align-content:start}
.result h2{color:#9AA39E}
.big{font:400 clamp(44px,7vw,64px)/1 var(--display);color:var(--neon);letter-spacing:.01em;font-variant-numeric:tabular-nums;word-break:break-word}
.big-label{font:600 14px var(--title);color:#C9D1CC;margin-top:6px}
.kpis{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:#252b28;border:1px solid #252b28;border-radius:10px;overflow:hidden}
.kpi{background:var(--frame-2);padding:12px 14px}
.kpi dt{font:600 12px/1.3 var(--title);color:#9AA39E;text-transform:uppercase;letter-spacing:.06em}
.kpi dd{margin:4px 0 0;font:700 20px/1.2 var(--body);color:#fff;font-variant-numeric:tabular-nums}
.stack{display:flex;height:14px;border-radius:999px;overflow:hidden;background:#252b28}
.stack i{display:block;height:100%}
.legend{display:grid;gap:6px;margin:0;padding:0;list-style:none;font-size:14px;color:#C9D1CC}
.legend li{display:flex;justify-content:space-between;gap:12px;font-variant-numeric:tabular-nums}
.legend li span:first-child{display:flex;align-items:center;gap:8px}
.legend b{color:#fff;font-weight:600}
.dot{width:10px;height:10px;border-radius:3px;flex:none}
.verdict{border-radius:10px;padding:12px 14px;font-size:14px;line-height:1.5;background:#17221B;color:#D8F5DF;border:1px solid #1F3A28}
.verdict.warn{background:#2A1F10;color:#FBE3BF;border-color:#4A3514}
.verdict.bad{background:#2C1414;color:#FAD4D0;border-color:#4E1E1E}
.verdict strong{color:#fff}

/* conteúdo */
.content{padding-block:56px 24px}
.prose{max-width:68ch}
.prose h2{font:800 clamp(24px,3.4vw,30px)/1.2 var(--title);color:var(--ink);letter-spacing:-.015em;margin:48px 0 12px;text-wrap:balance}
.prose h2:first-child{margin-top:0}
.prose h3{font:700 18px/1.3 var(--title);color:var(--ink);margin:28px 0 8px}
.prose p,.prose li{color:var(--text)}
.prose strong{color:var(--ink)}
.formula{background:var(--soft);border-left:4px solid var(--green-2);border-radius:0 10px 10px 0;padding:14px 18px;font:600 15px/1.6 var(--mono);color:var(--ink);overflow-x:auto;white-space:nowrap}
.tbl{overflow-x:auto;margin:16px 0}
.tbl table{border-collapse:collapse;width:100%;min-width:420px;font-variant-numeric:tabular-nums}
.tbl th,.tbl td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);font-size:15px}
.tbl th{font:700 12px var(--title);text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.tbl td:last-child,.tbl th:last-child{text-align:right}
.tbl tr.total td{font-weight:700;color:var(--ink);border-bottom:2px solid var(--ink)}
.faq{display:grid;gap:10px;margin-top:8px}
.faq details{border:1px solid var(--line);border-radius:10px;padding:0 16px}
.faq summary{cursor:pointer;padding:14px 0;font:700 16px/1.4 var(--title);color:var(--ink)}
.faq details p{margin:0 0 14px}
.note{font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px;margin-top:40px}

.more{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:14px;margin-top:14px}
.more a{display:block;text-decoration:none;border:1.5px solid var(--line);border-radius:12px;padding:16px;color:var(--text)}
.more a:hover{border-color:var(--ink)}
.more a b{display:block;font:800 17px/1.3 var(--title);color:var(--ink);margin-bottom:4px}

.cta{background:var(--frame);color:#fff;border-radius:16px;padding:28px;margin-block:48px 64px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;align-items:center}
.cta h2{font:400 clamp(28px,4.5vw,40px)/1 var(--display);text-transform:uppercase;margin:0 0 8px;color:#fff}
.cta p{margin:0;color:#C9D1CC;max-width:52ch}
.btn{display:inline-block;background:var(--neon);color:#0A0C0B;text-decoration:none;font:800 15px/1 var(--title);padding:16px 22px;border-radius:999px;white-space:nowrap}
.btn:hover{background:#B8FF6E}

.foot{background:var(--frame);color:#9AA39E;font-size:13px}
.foot .wrap{padding-block:24px;display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between}
.foot a{color:#C9D1CC}

@media (max-width:760px){
  .calc{grid-template-columns:1fr;margin-top:-40px}
  .cta{grid-template-columns:1fr}
  .hero{padding-block:22px 64px}
}
@media (max-width:420px){ .row2{grid-template-columns:1fr} .kpi dd{font-size:18px} }
@media (prefers-reduced-motion:reduce){*{transition:none!important}}