:root{
    --bg:#050608;
    --bg-2:#0A0D12;
    --surface:#0D121B;
    --surface-2:#111826;
    --border:#212B3D;
    --navy:#16233A;
    --text:#E7E9ED;
    --text-muted:#7C8494;
    --gold:#C9A15A;
    --gold-dim:#8A7141;
    --lcd:#3EBD73;
    --danger:#C1594A;
    --radius:6px;
    --font-display:'Fraunces', serif;
    --font-mono:'IBM Plex Mono', monospace;
    --font-body:'Work Sans', sans-serif;
    color-scheme:dark;
  }
  html[data-theme="light"]{
    --bg:#FAF8F3;
    --bg-2:#F1ECDF;
    --surface:#FFFFFF;
    --surface-2:#F5F0E4;
    --border:#E3DBC7;
    --navy:#EFE7D2;
    --text:#211D14;
    --text-muted:#6E6552;
    --gold:#96701F;
    --gold-dim:#C9A15A;
    --lcd:#1B8A4C;
    --danger:#B23A28;
    color-scheme:light;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:var(--font-body);
    line-height:1.5;
    -webkit-font-smoothing:antialiased;
    transition:background-color .2s ease, color .2s ease;
  }
  a{color:var(--gold);}
  h1,h2,h3{font-family:var(--font-display); font-weight:600; margin:0 0 .4em;}
  .mono{font-family:var(--font-mono);}
  button{font-family:inherit;}

  /* ===== Header ===== */
  header.site{
    display:flex; align-items:center; justify-content:space-between;
    gap:16px;
    padding:20px clamp(16px,4vw,40px);
    border-bottom:1px solid var(--border);
    position:sticky; top:0; z-index:40;
    background:var(--bg);
  }
  .brand{display:flex; align-items:baseline; gap:10px;}
  .brand-mark{
    width:34px; height:34px; border-radius:8px;
    overflow:hidden; flex:none;
    display:flex; align-items:center; justify-content:center;
  }
  .brand-mark img{width:100%; height:100%; display:block; object-fit:cover;}
  .brand h1{font-size:1.3rem; letter-spacing:.2px;}
  .brand small{display:block; font-family:var(--font-body); font-size:.72rem; color:var(--text-muted); font-weight:500; margin-top:1px;}
  .header-actions{display:flex; align-items:center; gap:18px;}
  .menu-toggle{
    display:none;
    background:var(--surface-2); border:1px solid var(--border); color:var(--text);
    border-radius:8px; padding:8px 14px; font-size:.85rem; cursor:pointer;
  }
  .theme-toggle{
    display:inline-flex; align-items:center; justify-content:center; flex:none;
    width:36px; height:36px; border-radius:8px;
    background:var(--surface-2); border:1px solid var(--border); color:var(--text-muted);
    cursor:pointer; transition:color .15s, border-color .15s;
  }
  .theme-toggle:hover{color:var(--gold); border-color:var(--gold-dim);}
  .theme-toggle .icon-moon{display:block;}
  .theme-toggle .icon-sun{display:none;}
  html[data-theme="light"] .theme-toggle .icon-moon{display:none;}
  html[data-theme="light"] .theme-toggle .icon-sun{display:block;}
  nav.main-nav{display:flex; align-items:center; gap:22px;}
  nav.main-nav a{color:var(--text-muted); font-size:.88rem; text-decoration:none;}
  nav.main-nav a:hover, nav.main-nav a.active{color:var(--text);}
  @media(max-width:720px){
    nav.main-nav{display:none;}
    .menu-toggle{display:inline-block;}
  }

  /* ===== Ad slots ===== */
  .banner-slot{
    display:flex; justify-content:center; margin:20px auto; max-width:728px; overflow-x:auto;
  }
  .ad-slot{
    border:1px dashed var(--border);
    border-radius:var(--radius);
    background:var(--surface);
    color:var(--text-muted);
    font-size:.72rem;
    text-align:center;
    padding:14px 10px;
    letter-spacing:.04em;
    text-transform:uppercase;
    margin:20px auto;
  }
  .ad-leaderboard{max-width:970px; min-height:90px; display:flex; align-items:center; justify-content:center;}
  .ad-rectangle{max-width:336px; min-height:280px; display:flex; align-items:center; justify-content:center;}
  .ad-inline{margin:28px 0; min-height:100px; display:flex; align-items:center; justify-content:center;}

  /* ===== Layout geral ===== */
  main{max-width:1180px; margin:0 auto; padding:0 clamp(16px,4vw,40px) 60px;}
  @keyframes fade{from{opacity:0; transform:translateY(4px);} to{opacity:1; transform:translateY(0);}}
  body{animation:fade .3s ease;}

  /* ===== Hero / busca ===== */
  .hero{text-align:center; padding:56px 20px 40px;}
  .hero h2{font-size:clamp(1.6rem,3.5vw,2.2rem); letter-spacing:.02em;}
  .hero p{color:var(--text-muted); max-width:520px; margin:0 auto;}
  .search-box{
    max-width:520px; margin:26px auto 0; position:relative;
  }
  .search-box input{
    width:100%; background:var(--surface); border:1px solid var(--border); color:var(--text);
    padding:13px 16px 13px 42px; border-radius:8px; font-size:.92rem; font-family:var(--font-body);
  }
  .search-box input:focus{outline:2px solid var(--gold); outline-offset:0;}
  .search-box svg{position:absolute; left:14px; top:50%; transform:translateY(-50%); color:var(--text-muted);}

  /* ===== Blocos de seção ===== */
  .section-block{margin-top:52px;}
  .section-block .eyebrow{
    font-family:var(--font-mono); font-size:.72rem; letter-spacing:.1em; color:var(--gold);
    text-transform:uppercase; margin-bottom:4px;
  }
  .section-block h2{font-size:1.25rem; margin-bottom:2px;}
  .section-block .sub{color:var(--text-muted); font-size:.86rem; margin-bottom:22px;}

  /* ===== Cards de destaque (maiores) ===== */
  .feature-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:14px;}
  @media(max-width:900px){.feature-grid{grid-template-columns:repeat(2,1fr);}}
  @media(max-width:520px){.feature-grid{grid-template-columns:1fr;}}
  .feature-card{
    background:var(--navy); border:1px solid var(--border); border-radius:var(--radius);
    padding:22px; cursor:pointer; text-align:left; color:var(--text); font-family:inherit;
    text-decoration:none; display:block;
    transition:border-color .15s;
  }
  .feature-card:hover{border-color:var(--gold-dim);}
  .feature-card .icon-box{
    width:36px; height:36px; border-radius:6px; background:var(--bg-2); border:1px solid var(--border);
    display:flex; align-items:center; justify-content:center; color:var(--gold); margin-bottom:14px;
  }
  .feature-card h4{font-size:1rem; margin:0 0 6px; font-family:var(--font-body); font-weight:600;}
  .feature-card p{font-size:.8rem; color:var(--text-muted); margin:0; line-height:1.45;}

  /* ===== Grid padrão de calculadoras ===== */
  .card-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:14px;}
  @media(max-width:820px){.card-grid{grid-template-columns:repeat(2,1fr);}}
  @media(max-width:560px){.card-grid{grid-template-columns:1fr;}}
  .calc-card{
    position:relative;
    background:var(--surface); border:1px solid var(--border); border-radius:var(--radius);
    padding:20px; cursor:pointer; text-align:left; color:var(--text); font-family:inherit;
    text-decoration:none; display:block;
    transition:border-color .15s, background .15s;
  }
  .fav-btn{
    position:absolute; top:10px; right:10px; width:26px; height:26px;
    border:1px solid var(--border); border-radius:6px; background:var(--bg-2);
    color:var(--text-muted); font-size:.9rem; line-height:1; cursor:pointer; padding:0;
    display:flex; align-items:center; justify-content:center; z-index:2;
  }
  .fav-btn:hover{color:var(--gold); border-color:var(--gold-dim);}
  .fav-btn.active{color:var(--gold); border-color:var(--gold-dim); background:var(--navy);}
  .calc-card:hover{border-color:var(--gold-dim); background:var(--surface-2);}
  .calc-card .icon-box{
    width:32px; height:32px; border-radius:6px; background:var(--navy); border:1px solid var(--border);
    display:flex; align-items:center; justify-content:center; color:var(--gold); margin-bottom:12px;
  }
  .calc-card h4{font-size:.95rem; margin:0 0 5px; font-family:var(--font-body); font-weight:600;}
  .calc-card p{font-size:.78rem; color:var(--text-muted); margin:0; line-height:1.4;}
  .calc-card.hidden-by-search{display:none;}

  /* ===== FAQ ===== */
  .faq{max-width:760px; margin:52px auto 0;}
  .faq-item{border-bottom:1px solid var(--border);}
  .faq-item summary{
    padding:16px 4px; cursor:pointer; font-size:.92rem; font-weight:500; list-style:none;
    display:flex; justify-content:space-between; align-items:center; gap:12px;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{content:'+'; color:var(--gold); font-size:1.1rem; flex:none;}
  .faq-item[open] summary::after{content:'–';}
  .faq-item p{margin:0 4px 16px; color:var(--text-muted); font-size:.85rem;}

  /* ===== Navegação / migalha de pão ===== */
  .breadcrumb{
    font-size:.78rem; color:var(--text-muted); margin:22px 0 18px; display:flex; gap:6px; flex-wrap:wrap;
  }
  .breadcrumb a{color:var(--text-muted); text-decoration:none;}
  .breadcrumb a:hover{color:var(--gold);}
  .breadcrumb span{color:var(--gold-dim);}

  .calc-section{padding-top:8px;}

  .calc-head .no-badge{
    display:inline-block; font-family:var(--font-mono); font-size:.7rem; color:var(--gold);
    border:1px solid var(--gold-dim); border-radius:4px; padding:2px 7px; margin-bottom:10px;
  }
  .calc-head h1{font-size:1.7rem;}
  .calc-intro{color:var(--text-muted); max-width:640px; font-size:.95rem; margin-bottom:26px;}

  .calc-grid{display:grid; grid-template-columns:1fr 1fr; gap:32px; align-items:start;}
  @media(max-width:820px){.calc-grid{grid-template-columns:1fr;}}

  .card{
    background:var(--surface);
    border:1px solid var(--border);
    border-radius:var(--radius);
    padding:22px;
  }
  .field{margin-bottom:16px;}
  .field label{display:block; font-size:.78rem; color:var(--text-muted); margin-bottom:6px; font-weight:500;}
  .field input, .field select{
    width:100%; background:var(--bg-2); border:1px solid var(--border); color:var(--text);
    padding:10px 12px; border-radius:7px; font-size:.95rem; font-family:var(--font-mono);
  }
  .field select{font-family:var(--font-body);}
  .field input:focus, .field select:focus{outline:2px solid var(--lcd); outline-offset:1px; border-color:var(--lcd);}
  .row-2{display:grid; grid-template-columns:1fr 1fr; gap:12px;}
  .seg{display:flex; border:1px solid var(--border); border-radius:7px; overflow:hidden;}
  .seg button{
    flex:1; background:var(--bg-2); border:none; color:var(--text-muted); padding:9px 6px;
    font-size:.8rem; cursor:pointer; border-right:1px solid var(--border);
  }
  .seg button:last-child{border-right:none;}
  .seg button.active{background:var(--surface-2); color:var(--lcd);}

  /* Painel de resultado — elemento de assinatura */
  .lcd{
    position:relative;
    background:var(--navy);
    border:1px solid var(--border);
    border-left:3px solid var(--gold);
    border-radius:var(--radius);
    padding:20px 22px;
  }
  .lcd .lcd-label{font-family:var(--font-mono); font-size:.68rem; color:var(--text-muted); letter-spacing:.08em; text-transform:uppercase; position:relative;}
  .lcd .lcd-value{font-family:var(--font-mono); font-size:clamp(1.6rem,4vw,2.4rem); color:var(--lcd); font-weight:600; position:relative; margin:2px 0 12px; word-break:break-word;}
  .lcd-sub{display:grid; grid-template-columns:1fr 1fr; gap:10px 18px; position:relative;}
  .lcd-sub div span{display:block;}
  .lcd-sub .k{font-size:.68rem; color:var(--text-muted); font-family:var(--font-mono);}
  .lcd-sub .v{font-size:.95rem; font-family:var(--font-mono); color:var(--text); margin-top:2px;}
  .lcd-sub .v.gold{color:var(--gold);}
  .lcd-sub .v.danger{color:var(--danger);}

  table.amort{width:100%; border-collapse:collapse; font-family:var(--font-mono); font-size:.78rem; margin-top:14px;}
  table.amort th, table.amort td{padding:7px 8px; text-align:right; border-bottom:1px solid var(--border);}
  table.amort th:first-child, table.amort td:first-child{text-align:left;}
  table.amort th{color:var(--text-muted); font-weight:500; font-size:.68rem; text-transform:uppercase; letter-spacing:.04em;}
  table.amort tr.ellipsis td{color:var(--text-muted); text-align:center;}
  .table-wrap{max-height:340px; overflow-y:auto; border:1px solid var(--border); border-radius:8px; padding:0 12px;}

  .progress-box{
    margin-top:16px; background:var(--surface); border:1px solid var(--border);
    border-radius:var(--radius); padding:14px 16px;
  }
  .progress-box .progress-title{
    display:flex; justify-content:space-between; align-items:center;
    font-family:var(--font-mono); font-size:.68rem; color:var(--text-muted);
    letter-spacing:.06em; text-transform:uppercase; margin-bottom:8px;
  }
  .progress-track{
    width:100%; height:10px; border-radius:6px; background:var(--bg-2);
    border:1px solid var(--border); overflow:hidden;
  }
  .progress-fill{
    height:100%; background:var(--lcd); border-radius:6px; width:0%;
    transition:width .25s ease;
  }

  .chart-box{
    margin-top:16px; background:var(--surface); border:1px solid var(--border);
    border-radius:var(--radius); padding:14px 16px 10px;
  }
  .chart-box .chart-title{
    font-family:var(--font-mono); font-size:.68rem; color:var(--text-muted);
    letter-spacing:.06em; text-transform:uppercase; margin-bottom:4px;
  }

  .note{
    font-size:.8rem; color:var(--text-muted); border-left:2px solid var(--gold-dim);
    padding:10px 14px; margin-top:18px; background:var(--surface); border-radius:0 7px 7px 0;
  }
  .note strong{color:var(--gold);}

  .recommend{
    margin-top:16px; padding:14px 16px; border-radius:8px; border:1px solid var(--border);
    background:var(--surface-2); font-size:.9rem;
  }
  .recommend b{color:var(--lcd);}

  footer.site{
    border-top:1px solid var(--border); padding:34px clamp(16px,4vw,40px) 50px;
    color:var(--text-muted); font-size:.82rem; max-width:1240px; margin:0 auto;
  }
  footer.site p{max-width:760px;}
  footer.site nav{margin-top:14px; display:flex; flex-wrap:wrap; gap:6px 16px;}
  footer.site nav a{color:var(--text-muted); font-size:.8rem;}
  footer.site nav a:hover{color:var(--gold);}

  /* ===== Conteúdo explicativo (SEO) ===== */
  .seo-content{max-width:760px; margin:44px 0 0;}
  .seo-content h2{font-size:1.15rem; margin-top:32px;}
  .seo-content h2:first-child{margin-top:0;}
  .seo-content p{color:var(--text-muted); font-size:.9rem; line-height:1.7;}
  .seo-content ul{color:var(--text-muted); font-size:.9rem; line-height:1.7; padding-left:20px;}

  /* ===== Calculadoras relacionadas ===== */
  .related{margin-top:44px;}
  .related h2{font-size:1.05rem; margin-bottom:14px;}
  .related-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:12px;}
  @media(max-width:700px){.related-grid{grid-template-columns:1fr;}}
  .related-grid a{
    display:block; background:var(--surface); border:1px solid var(--border); border-radius:var(--radius);
    padding:14px 16px; color:var(--text); text-decoration:none; font-size:.85rem; font-weight:500;
    transition:border-color .15s;
  }
  .related-grid a:hover{border-color:var(--gold-dim);}

  /* ===== Artigos — hub e listagem ===== */
  .articles-hero{max-width:680px; margin:0 auto 8px;}
  .article-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:16px;}
  @media(max-width:700px){.article-grid{grid-template-columns:1fr;}}

  .article-card{
    background:var(--surface); border:1px solid var(--border); border-radius:var(--radius);
    padding:26px; text-decoration:none; color:var(--text); display:block;
    transition:border-color .15s, background .15s;
  }
  .article-card:hover{border-color:var(--gold-dim); background:var(--surface-2);}
  .article-card.featured{
    grid-column:1 / -1; display:grid; grid-template-columns:1fr auto; gap:20px; align-items:center;
    background:var(--navy);
  }
  @media(max-width:700px){.article-card.featured{grid-template-columns:1fr;}}
  .article-card .cat-badge{
    display:inline-block; font-family:var(--font-mono); font-size:.68rem; color:var(--gold);
    border:1px solid var(--gold-dim); border-radius:4px; padding:2px 8px; margin-bottom:12px;
    text-transform:uppercase; letter-spacing:.05em;
  }
  .article-card h3{font-size:1.05rem; margin:0 0 8px; font-family:var(--font-display); font-weight:600;}
  .article-card.featured h3{font-size:1.5rem;}
  .article-card p{color:var(--text-muted); font-size:.86rem; line-height:1.55; margin:0 0 14px;}
  .article-card .article-meta{
    font-family:var(--font-mono); font-size:.72rem; color:var(--text-muted);
    display:flex; gap:12px; flex-wrap:wrap;
  }
  .article-card .read-more{color:var(--gold); font-size:.82rem; font-weight:600; white-space:nowrap;}

  .articles-empty{
    text-align:center; color:var(--text-muted); font-size:.88rem; padding:30px 20px;
    border:1px dashed var(--border); border-radius:var(--radius); margin-top:16px;
  }

  /* ===== Artigo individual ===== */
  .article-meta-top{
    display:flex; gap:16px; flex-wrap:wrap; color:var(--text-muted); font-size:.78rem;
    font-family:var(--font-mono); margin:14px 0 0;
  }

  .toc{
    background:var(--surface); border:1px solid var(--border); border-radius:var(--radius);
    padding:20px 24px; margin:32px 0; max-width:760px;
  }
  .toc .toc-title{
    font-family:var(--font-mono); font-size:.7rem; color:var(--gold); text-transform:uppercase;
    letter-spacing:.08em; margin-bottom:12px; font-weight:600;
  }
  .toc ol{margin:0; padding-left:20px; color:var(--text-muted); font-size:.85rem; line-height:2;}
  .toc a{color:var(--text-muted); text-decoration:none;}
  .toc a:hover{color:var(--gold);}

  .article-body{max-width:760px;}
  .article-body h2{font-size:1.3rem; margin-top:46px; scroll-margin-top:90px;}
  .article-body h2:first-of-type{margin-top:8px;}
  .article-body h3{font-size:1.05rem; margin-top:26px; color:var(--text);}
  .article-body p{color:var(--text-muted); font-size:.95rem; line-height:1.8; margin:0 0 16px;}
  .article-body ul, .article-body ol{color:var(--text-muted); font-size:.95rem; line-height:1.8; padding-left:22px; margin:0 0 16px;}
  .article-body li{margin-bottom:4px;}
  .article-body strong{color:var(--text);}
  .article-body hr{border:none; border-top:1px solid var(--border); margin:38px 0;}

  .example-box{
    background:var(--navy); border:1px solid var(--border); border-left:3px solid var(--lcd);
    border-radius:var(--radius); padding:18px 22px; margin:18px 0 26px;
    font-family:var(--font-mono); font-size:.85rem; color:var(--text); line-height:1.7;
  }
  .example-box .example-label{
    font-family:var(--font-body); font-size:.72rem; color:var(--lcd); text-transform:uppercase;
    letter-spacing:.06em; margin-bottom:10px; font-weight:600;
  }
  .example-box .result{color:var(--gold); font-weight:600;}

  table.content-table{width:100%; border-collapse:collapse; font-size:.85rem; margin:18px 0 26px;}
  table.content-table th, table.content-table td{padding:9px 12px; text-align:left; border-bottom:1px solid var(--border);}
  table.content-table th{color:var(--gold); font-family:var(--font-mono); font-size:.68rem; text-transform:uppercase; letter-spacing:.04em;}
  table.content-table td{color:var(--text-muted); font-family:var(--font-mono);}

  .cta-box{
    background:var(--navy); border:1px solid var(--gold-dim); border-radius:var(--radius);
    padding:30px 32px; margin:46px 0; text-align:center;
  }
  .cta-box h3{margin-bottom:8px; font-size:1.2rem;}
  .cta-box p{color:var(--text-muted); font-size:.9rem; margin-bottom:20px;}
  .cta-box a.btn{
    display:inline-block; background:var(--gold); color:var(--bg); font-weight:600;
    padding:12px 28px; border-radius:8px; text-decoration:none; font-size:.9rem;
  }
  .cta-box a.btn:hover{background:var(--lcd);}

  .disclaimer-box{
    font-size:.78rem; color:var(--text-muted); border-left:2px solid var(--danger);
    padding:12px 16px; margin-top:30px; background:var(--surface); border-radius:0 7px 7px 0;
  }