:root{
    --ink:#1c2420;
    --ink-2:#232b26;
    --paper:#f5f3ee;
    --paper-2:#eae7de;
    --rust:#a84f22;
    --rust-dark:#7e3a17;
    --forest:#3c4a3a;
    --forest-light:#5a6b56;
    --sand:#b99552;
    --text:#23231f;
    --muted:#6b6a63;
    --line:rgba(35,35,31,0.14);
    --line-light:rgba(245,243,238,0.16);
    --radius:6px;
    --font-display:'Inter', system-ui, sans-serif;
    --font-body:'Inter', system-ui, sans-serif;
    --font-mono:'IBM Plex Mono', monospace;
  }
  *{box-sizing:border-box; margin:0; padding:0;}
  html{scroll-behavior:smooth;}
  body{
    font-family:var(--font-body);
    background:var(--paper);
    color:var(--text);
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img,svg{display:block;}
  a{color:inherit; text-decoration:none;}
  .wrap{max-width:1180px; margin:0 auto; padding:0 32px;}
  h1,h2,h3{font-family:var(--font-display); line-height:1.12; letter-spacing:-0.02em; font-weight:700;}

  .reveal{opacity:0; transform:translateY(18px); transition:opacity .6s ease, transform .6s ease;}
  .reveal.in{opacity:1; transform:translateY(0);}

  /* ---------- NAV ---------- */
  header{
    position:sticky; top:0; z-index:50;
    background:rgba(245,243,238,0.92);
    backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
  }
  .nav{display:flex; align-items:center; justify-content:space-between; padding:18px 32px; gap:16px;}
  .brand{display:flex; align-items:center; gap:10px; font-family:var(--font-display); font-weight:800; font-size:1.3rem; color:var(--ink); letter-spacing:-0.01em; flex-shrink:0; text-decoration:none;}
  .brand img{height:40px; width:auto; object-fit:contain;}
  .nav-links{display:flex; gap:32px; font-size:0.88rem; font-weight:500;}
  .nav-links a{opacity:0.7; transition:opacity .2s; font-family:var(--font-mono);}
  .nav-links a:hover{opacity:1;}
  .nav-cta{
    background:var(--ink); color:var(--paper); padding:10px 20px; border-radius:var(--radius);
    font-weight:600; font-size:0.86rem; white-space:nowrap; font-family:var(--font-mono);
    transition:background .2s ease; flex-shrink:0;
  }
  .nav-cta:hover{background:var(--rust);}
  .nav-cta .short{display:none;}
  @media (max-width:760px){ .nav-links{display:none;} }
  @media (max-width:420px){
    .nav-cta .full{display:none;}
    .nav-cta .short{display:inline;}
  }

  /* ---------- SECTION NUMBER DEVICE ---------- */
  .sec-number{
    font-family:var(--font-mono); font-size:0.78rem; color:var(--rust); font-weight:500;
    letter-spacing:0.08em; display:flex; align-items:center; gap:10px; margin-bottom:18px;
  }
  .sec-number::before{content:''; width:28px; height:1px; background:var(--rust);}

  /* ---------- HERO ---------- */
  .hero{
    background:var(--ink);
    color:var(--paper);
    position:relative; overflow:hidden;
    padding:100px 0 90px;
    border-bottom:1px solid var(--line-light);
  }
  .hero::before{
    content:''; position:absolute; inset:0; opacity:0.5;
    background-size:100% 44px;
  }
  .hero-grid{position:relative; display:grid; grid-template-columns:1.3fr 0.9fr; gap:60px; align-items:end;}
  @media (max-width:900px){
    .hero-grid{grid-template-columns:1fr; gap:32px;}
    .hero-desc{border-left:none; border-top:1px solid rgba(245,243,238,0.25); padding-left:0; padding-top:24px;}
  }
  .hero-tag{
    font-family:var(--font-mono); font-size:0.8rem; letter-spacing:0.1em; text-transform:uppercase;
    color:var(--sand); margin-bottom:22px; display:block; border-bottom:1px solid rgba(185,149,82,0.35); padding-bottom:14px; max-width:fit-content;
  }
  .hero h1{
    font-size:clamp(2.4rem, 4.6vw, 3.6rem); font-weight:800; color:#fff; max-width:680px;
  }
  .hero-desc{border-left:1px solid rgba(245,243,238,0.25); padding-left:28px;}
  .hero-desc p{font-size:1.02rem; line-height:1.7; color:rgba(245,243,238,0.72);}
  .hero-ctas{display:flex; gap:14px; margin-top:36px; flex-wrap:wrap;}
  .btn-primary{
    background:var(--rust); color:#fff; font-weight:600; font-size:0.94rem;
    padding:14px 26px; border-radius:var(--radius);
    transition:background .2s ease; font-family:var(--font-mono);
  }
  .btn-primary:hover{background:var(--rust-dark);}
  .btn-ghost{
    border:1px solid rgba(245,243,238,0.35); color:var(--paper); font-weight:500; font-family:var(--font-mono);
    padding:14px 24px; border-radius:var(--radius); font-size:0.94rem; transition:border-color .2s, background .2s;
  }
  .btn-ghost:hover{border-color:var(--paper); background:rgba(245,243,238,0.06);}

  .hero-stats{
    position:relative; margin-top:56px; padding-top:28px; border-top:1px solid rgba(245,243,238,0.16);
    display:grid; grid-template-columns:repeat(3,1fr); gap:16px;
  }
  .hero-stats div b{display:block; font-family:var(--font-display); font-weight:800; font-size:clamp(1.25rem,5.2vw,2.1rem); color:var(--sand); white-space:nowrap;}
  .hero-stats div span{font-size:0.74rem; color:rgba(245,243,238,0.55); line-height:1.35; display:block; margin-top:4px; font-family:var(--font-mono);}
  @media (max-width:480px){
    .hero-stats{gap:10px; margin-top:44px; padding-top:22px;}
    .hero-stats div span{font-size:0.62rem; letter-spacing:0.01em;}
  }
  @media (max-width:360px){
    .hero-stats div span{font-size:0.58rem;}
  }

  /* ---------- SECTION SCAFFOLD ---------- */
  section{padding:96px 0; position:relative;}
  .section-head{max-width:680px; margin:0 0 56px;}
  .section-head h2{font-size:clamp(2rem,3.6vw,2.7rem); color:var(--ink);}
  .section-head p{margin-top:16px; color:var(--muted); font-size:1.05rem; line-height:1.65; max-width:560px;}

  .grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border:1px solid var(--line);}
  @media (max-width:880px){.grid-3{grid-template-columns:1fr;}}

  .card{
    background:var(--paper); padding:34px 30px; position:relative;
  }
  .card .num{
    font-family:var(--font-mono); font-size:0.76rem; font-weight:500; color:var(--rust);
    letter-spacing:0.06em; text-transform:uppercase;
  }
  .card h3{font-size:1.32rem; margin-top:12px; color:var(--ink); font-weight:700; letter-spacing:-0.01em;}
  .card p{margin-top:10px; color:var(--muted); line-height:1.6; font-size:0.96rem;}

  /* ---------- PROBLEMA (light) ---------- */
  #problema{background:var(--paper);}

  /* ---------- SOLUCAO (dark) ---------- */
  #solucao{background:var(--ink); color:var(--paper);}
  #solucao .section-head h2{color:#fff;}
  #solucao .section-head p{color:rgba(245,243,238,0.65);}
  #solucao .grid-3{background:var(--line-light); border-color:var(--line-light);}
  #solucao .card{background:var(--ink);}
  #solucao .card h3{color:var(--paper);}
  #solucao .card p{color:rgba(245,243,238,0.6);}
  #solucao .card .num{color:var(--sand);}

  /* ---------- DIFERENCIAL vs CONCORRENTES ---------- */
  #comparativo{background:var(--paper-2);}
  .compare-table{
    background:var(--paper); border:1px solid var(--line);
  }
  .compare-row{display:grid; grid-template-columns:1.2fr 1fr 1fr; border-bottom:1px solid var(--line);}
  .compare-row:last-child{border-bottom:none;}
  .compare-row > div{padding:20px 26px; font-size:0.94rem; display:flex; align-items:center;}
  .compare-row.head{background:var(--ink); color:#fff; font-family:var(--font-mono); font-weight:500; font-size:0.82rem; letter-spacing:0.06em; text-transform:uppercase;}
  .compare-row.head > div:nth-child(2){color:var(--sand);}
  .compare-row:not(.head) > div.crit{font-weight:700; color:var(--ink); font-family:var(--font-display); font-size:1.05rem;}
  .compare-row:not(.head) > div:nth-child(2){color:var(--rust); font-weight:500;}
  .compare-row:not(.head) > div:nth-child(3){color:var(--muted);}
  @media (max-width:700px){
    .compare-table{border:none; background:transparent;}
    .compare-row.head{display:none;}
    .compare-row{
      display:block; grid-template-columns:none; border:1px solid var(--line);
      background:var(--paper); margin-bottom:16px;
    }
    .compare-row:last-child{margin-bottom:0;}
    .compare-row > div{display:block; padding:14px 20px; border-bottom:1px solid var(--line); font-size:0.92rem;}
    .compare-row > div:last-child{border-bottom:none;}
    .compare-row .crit{
      font-family:var(--font-display); font-weight:700; font-size:1.05rem; color:#fff;
      background:var(--ink); border-bottom:none;
    }
    .compare-row > div[data-label]::before{
      content:attr(data-label); display:block; font-family:var(--font-mono); font-size:0.68rem;
      font-weight:500; letter-spacing:0.06em; text-transform:uppercase; margin-bottom:4px;
    }
    .compare-row > div[data-label="Rastro"]::before{color:var(--rust);}
    .compare-row > div[data-label="Concorrentes"]::before{color:var(--muted);}
  }

  /* ---------- RASTREABILIDADE ---------- */
  #rastreio{background:var(--forest); color:var(--paper);}
  #rastreio .section-head h2{color:#fff;}
  #rastreio .section-head p{color:rgba(245,243,238,0.7);}
  .trail-track{display:flex; flex-direction:column; gap:0; max-width:820px;}
  .trail-step{display:grid; grid-template-columns:70px 1fr; gap:24px; padding:30px 0; border-top:1px solid rgba(245,243,238,0.18);}
  .trail-step:first-child{border-top:1px solid rgba(245,243,238,0.18);}
  .trail-step .step-index{font-family:var(--font-mono); font-size:1.6rem; color:var(--sand); font-weight:500;}
  .trail-step .step-body h3{font-size:1.24rem; color:#fff; font-family:var(--font-display); font-weight:700; letter-spacing:-0.01em;}
  .trail-step .step-body p{margin-top:6px; color:rgba(245,243,238,0.72); line-height:1.6; font-size:0.97rem;}

  /* ---------- MERCADO ---------- */
  #mercado{background:var(--paper);}
  .market-grid{display:grid; grid-template-columns:1fr 1fr; gap:50px; align-items:center;}
  @media (max-width:860px){.market-grid{grid-template-columns:1fr;}}
  .market-fact{font-size:1.04rem; color:var(--muted); line-height:1.75;}
  .market-fact b{color:var(--ink); font-weight:600;}
  .donut-wrap{display:flex; align-items:center; gap:32px; flex-wrap:wrap;}
  .donut{position:relative; width:190px; height:190px; border-radius:50%; flex-shrink:0;
    background:conic-gradient(var(--rust) 0% 80.1%, var(--forest-light) 80.1% 100%);
  }
  .donut-label{position:absolute; inset:20px; border-radius:50%; background:var(--paper); display:flex; flex-direction:column; align-items:center; justify-content:center; text-align:center;}
  .donut-label b{font-family:var(--font-display); font-weight:800; font-size:1.8rem; color:var(--rust);}
  .donut-label span{font-size:0.72rem; color:var(--muted); max-width:110px; line-height:1.35; font-family:var(--font-mono); margin-top:4px;}
  .legend{display:flex; flex-direction:column; gap:10px; font-size:0.9rem; font-family:var(--font-mono);}
  .legend .dot{width:10px; height:10px; display:inline-block; margin-right:8px;}
  .bars{display:flex; align-items:flex-end; gap:26px; height:190px; margin-top:24px;}
  .bar-group{display:flex; flex-direction:column; align-items:center; gap:8px; flex:1;}
  .bar-pair{display:flex; align-items:flex-end; gap:6px; height:150px;}
  .bar{width:20px; position:relative;}
  .bar.ne{background:var(--rust);}
  .bar.br{background:var(--forest-light);}
  .bar-group label{font-size:0.76rem; color:var(--muted); font-weight:500; font-family:var(--font-mono);}
  .legend-row{margin-top:14px; flex-direction:row; gap:22px; display:flex;}
  @media (max-width:520px){
    .donut-wrap{justify-content:center; gap:24px;}
    .donut{width:150px; height:150px;}
    .donut-label{inset:16px;}
    .donut-label b{font-size:1.4rem;}
    .donut-label span{font-size:0.62rem; max-width:90px;}
    .bars{gap:14px; height:150px;}
    .bar-pair{gap:4px; height:118px;}
    .bar{width:15px;}
    .bar-group label{font-size:0.68rem;}
    .legend, .legend-row{font-size:0.78rem;}
  }

  /* ---------- MODELO DE NEGÓCIO ---------- */
  #modelo{background:var(--ink); color:var(--paper);}
  #modelo .section-head h2{color:#fff;}
  #modelo .section-head p{color:rgba(245,243,238,0.65);}
  .flow{display:flex; flex-direction:column; align-items:flex-start; gap:0;}
  .flow-node{
    background:var(--paper); color:var(--ink); font-family:var(--font-mono); font-weight:600; font-size:0.95rem;
    padding:14px 30px; border-radius:var(--radius); letter-spacing:0.04em;
  }
  .flow-branch{display:grid; grid-template-columns:1fr 1fr; gap:40px; margin-top:48px; width:100%;}
  @media (max-width:700px){ .flow-branch{grid-template-columns:1fr;} }
  .flow-col{display:flex; flex-direction:column; gap:16px; border-top:1px solid rgba(245,243,238,0.2); padding-top:20px;}
  .flow-card{
    background:rgba(245,243,238,0.04); border:1px solid var(--line-light); padding:20px 24px;
  }
  .flow-card b{font-family:var(--font-display); font-weight:700; font-size:1.02rem; color:var(--sand); display:block; margin-bottom:6px;}
  .flow-card span{font-size:0.9rem; color:rgba(245,243,238,0.65); line-height:1.5;}

  /* ---------- CTA FINAL ---------- */
  #cta-final{
    background:var(--paper-2); text-align:left; padding:90px 0; border-top:1px solid var(--line);
  }
  .cta-inner{display:grid; grid-template-columns:1.2fr 0.8fr; gap:50px; align-items:center;}
  @media (max-width:800px){ .cta-inner{grid-template-columns:1fr;} }
  #cta-final h2{font-size:clamp(1.9rem,3.6vw,2.6rem); color:var(--ink);}
  #cta-final p{margin-top:16px; color:var(--muted); font-size:1.02rem; max-width:460px; line-height:1.65;}
  .btn-dark{
    display:inline-block; background:var(--ink); color:var(--paper); font-weight:600; font-family:var(--font-mono);
    padding:16px 30px; border-radius:var(--radius); font-size:0.95rem; transition:background .2s ease;
  }
  .btn-dark:hover{background:var(--rust);}
  .cta-form{background:var(--paper); border:1px solid var(--line); padding:28px;}
  .cta-form label{display:block; font-family:var(--font-mono); font-size:0.72rem; text-transform:uppercase; letter-spacing:0.06em; color:var(--muted); margin-bottom:6px;}
  .cta-form input{
    width:100%; padding:11px 12px; border:1px solid var(--line); background:var(--paper); font-family:var(--font-body);
    font-size:0.92rem; margin-bottom:16px; border-radius:4px; color:var(--text);
  }
  .cta-form input:focus{outline:2px solid var(--rust); outline-offset:1px; border-color:var(--rust);}

  /* ---------- FOOTER ---------- */
  footer{background:var(--ink); color:rgba(245,243,238,0.55); padding:48px 0; font-size:0.86rem;}
  .footer-inner{display:flex; justify-content:space-between; align-items:flex-start; flex-wrap:wrap; gap:24px;}
  .footer-brand{display:flex; align-items:center; gap:8px; font-family:var(--font-display); font-weight:800; color:var(--paper); font-size:1.1rem; margin-bottom:8px;}
  .footer-brand svg{height:18px;}
  .footer-col h4{font-family:var(--font-mono); font-size:0.72rem; text-transform:uppercase; letter-spacing:0.08em; color:rgba(245,243,238,0.4); margin-bottom:10px;}
  .footer-col a{display:block; margin-bottom:6px; opacity:0.75; transition:opacity .2s;}
  .footer-col a:hover{opacity:1;}
  .footer-bottom{margin-top:36px; padding-top:20px; border-top:1px solid var(--line-light); font-size:0.78rem; font-family:var(--font-mono); opacity:0.5;}
  @media (max-width:600px){
    .footer-inner{flex-direction:column; gap:32px;}
  }

  @media (max-width:600px){
    section{padding:64px 0;}
    .hero{padding:70px 0 60px;}
    .wrap{padding:0 20px;}
    .nav{padding:14px 20px;}
    .card{padding:26px 22px;}
    .cta-form{padding:22px;}
    .flow-card{padding:16px 18px;}
    .section-head{margin-bottom:40px;}
    .trail-step{gap:16px; padding:24px 0;}
    .trail-step .step-index{font-size:1.2rem;}
  }
  @media (max-width:380px){
    .hero-tag{font-size:0.7rem;}
    .hero-ctas{gap:10px;}
    .btn-primary, .btn-ghost{padding:12px 18px; font-size:0.86rem;}
  }