:root{
    --coffee-950:#173620; --coffee-900:#22462c; --coffee-800:#315b39;
    --cherry-600:#2e7d32; --cherry-700:#1b5e20;
    --leaf-700:#2e7d32; --leaf-800:#1b5e20;
    --parchment-50:#fffdf8; --parchment-100:#f3ede0; --parchment-200:#e4dcc9;
    --gold-500:#c6923c;
    --ink:#241c15;
    --serif:"Fraunces",Georgia,serif;
    --sans:"Work Sans",system-ui,-apple-system,Segoe UI,sans-serif;
    padding-top:env(safe-area-inset-top,0px);
    padding-bottom:env(safe-area-inset-bottom,0px);
  }
  @media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){ --parchment-50:#f1e7d2; --parchment-100:#e6d8ba; } }
  :root[data-theme="dark"]{ --parchment-50:#f1e7d2; --parchment-100:#e6d8ba; }
  *{box-sizing:border-box;}
  html{scroll-padding-top:env(safe-area-inset-top,0px);}
  body{
    margin:0; background:var(--parchment-50); color:var(--ink);
    font-family:var(--sans); line-height:1.6; -webkit-font-smoothing:antialiased;
  }
  img,svg{max-width:100%;}
  h1,h2,h3{font-family:var(--serif); margin:0; font-weight:560; line-height:1.08;}
  p{margin:0 0 1em; max-width:62ch;}
  section{padding:5.5rem 1.5rem;}
  .wrap{max-width:1040px; margin:0 auto;}
  a{color:inherit;}

  /* Top bar */
  header.top{
    position:sticky; top:0; z-index:20; background:var(--parchment-50);
    border-bottom:1px solid var(--parchment-200);
    padding:1rem 1.5rem calc(1rem + env(safe-area-inset-top,0px));
    padding-top:calc(1rem + env(safe-area-inset-top,0px));
    display:flex; align-items:center; justify-content:space-between;
  }
  .brand{display:flex; align-items:center; gap:.6rem; font-family:var(--serif); font-size:1.15rem; font-weight:560;}
  .brand svg{width:26px; height:26px;}
  .cta{
    background:var(--cherry-600); color:var(--parchment-50); text-decoration:none;
    padding:.6rem 1.1rem; font-family:var(--sans); font-weight:600; font-size:.92rem;
    border-radius:2px; white-space:nowrap;
  }

  /* Hero */
  .hero{background:var(--coffee-950); color:var(--parchment-100); position:relative; overflow:hidden;}
  .hero .wrap{padding-top:1rem;}
  .hero h1{color:var(--parchment-50); font-size:clamp(2.1rem,5vw,3.4rem); max-width:16ch;}
  .hero p.lead{color:var(--parchment-200); font-size:1.15rem; margin-top:1.2rem; max-width:46ch;}
  .sources{display:flex; flex-wrap:wrap; gap:.9rem; margin-top:2.5rem; padding-top:2rem; border-top:1px solid rgba(241,231,210,.18);}
  .source-chip{display:flex; align-items:center; gap:.55rem; font-size:.88rem; color:var(--parchment-200);}
  .source-chip svg{width:20px; height:20px; flex:none;}

  /* Problema */
  .problema{background:var(--parchment-100);}
  .problema .wrap{display:grid; grid-template-columns:auto 1fr; gap:2.5rem; align-items:start;}
  .problema .rule{width:3px; background:var(--cherry-600); height:100%; min-height:120px;}
  .problema h2{font-size:1.9rem; margin-bottom:1.1rem; max-width:16ch;}

  /* Como funciona */
  .funciona h2{font-size:1.9rem; margin-bottom:.5rem;}
  .funciona > .wrap > p{margin-bottom:2.8rem;}
  .pilares{display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:0; border-top:1px solid var(--parchment-200);}
  .pilar{padding:1.6rem 1.2rem 1.6rem 0; border-bottom:1px solid var(--parchment-200);}
  .pilar svg{width:28px; height:28px; color:var(--leaf-700);}
  .pilar h3{font-size:1.05rem; margin:.7rem 0 .4rem;}
  .pilar p{font-size:.94rem; margin:0; color:#4b3a2a;}

  /* Tutorial - timeline */
  .tutorial{background:var(--coffee-900); color:var(--parchment-100);}
  .tutorial h2{color:var(--parchment-50); font-size:1.9rem; margin-bottom:.4rem;}
  .tutorial > .wrap > p{color:var(--parchment-200); margin-bottom:3rem;}
  .passos{position:relative; padding-left:2.4rem;}
  .passos::before{content:"";position:absolute; left:7px; top:.3rem; bottom:.3rem; width:2px; background:rgba(241,231,210,.25);}
  .passo{position:relative; padding-bottom:2.6rem;}
  .passo:last-child{padding-bottom:0;}
  .passo::before{
    content:""; position:absolute; left:-2.4rem; top:.25rem; width:16px; height:16px;
    background:var(--cherry-600); border-radius:50%; box-shadow:0 0 0 4px var(--coffee-900);
  }
  .passo .num{font-family:var(--serif); font-size:.95rem; color:var(--gold-500); display:block; margin-bottom:.2rem;}
  .passo h3{color:var(--parchment-50); font-size:1.2rem; margin-bottom:.4rem;}
  .passo p{color:var(--parchment-200); font-size:.96rem; margin:0;}

  /* Doenças - field guide list */
  .doencas h2{font-size:1.9rem; margin-bottom:.4rem;}
  .doencas > .wrap > p{margin-bottom:2.2rem;}
  .lista-doencas{border-top:1px solid var(--parchment-200);}
  .doenca-item{
    display:grid; grid-template-columns:1.4fr 2fr; gap:1rem; padding:1.1rem 0;
    border-bottom:1px solid var(--parchment-200); align-items:baseline;
  }
  .doenca-item h3{font-size:1.05rem; font-weight:600; font-family:var(--sans);}
  .doenca-item p{margin:0; font-size:.93rem; color:#4b3a2a;}

  /* Perfis - tabela */
  .perfis{background:var(--parchment-100);}
  .perfis h2{font-size:1.9rem; margin-bottom:1.8rem;}
  .tabela-perfis{width:100%; border-collapse:collapse; font-size:.94rem;}
  .tabela-perfis th{
    text-align:left; font-family:var(--sans); font-weight:600; padding:.7rem .8rem;
    border-bottom:2px solid var(--coffee-900); color:var(--coffee-900);
  }
  .tabela-perfis td{padding:1rem .8rem; border-bottom:1px solid var(--parchment-200); vertical-align:top;}
  .tabela-perfis td:first-child{font-family:var(--serif); font-weight:560; white-space:nowrap;}

  /* Footer CTA */
  footer{background:var(--coffee-950); color:var(--parchment-200); padding:5rem 1.5rem 3rem; text-align:center;}
  footer h2{color:var(--parchment-50); font-size:2rem; max-width:20ch; margin:0 auto 1.4rem;}
  footer .cta{display:inline-block; margin-top:.4rem; font-size:1rem; padding:.85rem 1.6rem;}
  footer .creditos{margin-top:3.5rem; font-size:.82rem; color:#8a7a63; max-width:60ch; margin-left:auto; margin-right:auto;}

  @media (max-width:640px){
    section{padding:3.5rem 1.2rem;}
    .problema .wrap{grid-template-columns:2px 1fr; gap:1.3rem;}
    .doenca-item{grid-template-columns:1fr; gap:.2rem;}
    .tabela-perfis{font-size:.86rem;}
  }
/* Navegação e cadastro */
.top-actions{display:flex;align-items:center;gap:1.2rem;font-size:.92rem;font-weight:600;}
.top-actions a:not(.cta),.brand-link{text-decoration:none;}
.hero-cta{display:inline-block;margin-top:.5rem;}
.footer-login{margin:1rem auto 0;}
.brand-link{color:inherit;}
.signup-layout{min-height:calc(100vh - 75px);display:grid;grid-template-columns:minmax(0,1fr) minmax(340px,480px);gap:clamp(2rem,7vw,7rem);align-items:center;max-width:1140px;margin:auto;padding:clamp(2rem,6vw,5rem) 1.5rem;}
.signup-intro h1{font-size:clamp(2.5rem,5vw,4.5rem);max-width:12ch;margin:.8rem 0 1.2rem;color:var(--leaf-800);}
.signup-intro>p{font-size:1.05rem;color:#584c3d;}
.eyebrow{color:var(--leaf-700);font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.16em;}
.signup-art{height:170px;max-width:480px;margin:2rem 0 1.2rem;position:relative;overflow:hidden;background:linear-gradient(165deg,#e7e3bf 0 35%,#c6d0a4 35% 55%,#78945c 55% 100%);border-radius:14px;}
.signup-art span{position:absolute;left:1.5rem;top:1rem;font-size:.65rem;letter-spacing:.25em;font-weight:600;color:#355c36;}
.signup-art i{position:absolute;width:65%;height:90px;border:2px solid #e2e8c4;border-radius:50%;transform:rotate(-16deg);bottom:-55px;left:15%;}
.signup-art i:nth-of-type(2){bottom:-37px;left:28%;}.signup-art i:nth-of-type(3){bottom:-20px;left:42%;}.signup-art i:nth-of-type(4){bottom:-3px;left:55%;}
.signup-note{font-size:.85rem!important;}
.signup-card{background:#fffdf7;border:1px solid var(--parchment-200);border-radius:16px;padding:clamp(1.5rem,4vw,2.5rem);box-shadow:0 18px 45px rgba(36,21,9,.08);}
.signup-card h2{font-size:2rem;margin:.6rem 0;}.signup-card>p{font-size:.94rem;color:#584c3d;}
.signup-card form{display:flex;flex-direction:column;margin-top:1.5rem;}
.signup-card label{font-size:.88rem;font-weight:600;margin:0 0 .35rem;}
.signup-card input{width:100%;border:1px solid #bcb8a8;background:white;border-radius:8px;padding:.8rem .9rem;font:inherit;margin:0 0 1rem;}
.signup-card input:focus-visible,.signup-card a:focus-visible,.signup-card button:focus-visible{outline:3px solid var(--gold-500);outline-offset:2px;}
.signup-submit{border:0;cursor:pointer;padding:.9rem 1rem;border-radius:8px;font-size:1rem;}
.signup-submit:disabled{opacity:.65;cursor:wait;}
.form-status{color:#9d2637;font-size:.88rem;margin:0 0 .75rem;}
.form-status:empty{display:none;}
.signup-success{background:#ebf2e7;padding:1.25rem;border-radius:10px;margin:1.5rem 0;}
.signup-success[hidden],.signup-card form[hidden]{display:none;}
.signup-success h3{font-size:1.4rem;color:var(--leaf-800);}.signup-success p{margin:.6rem 0 1.3rem;}.signup-success .cta{display:inline-block;border-radius:8px;}
.signup-login{margin:1.5rem 0 0!important;text-align:center;}
@media(max-width:750px){.signup-layout{grid-template-columns:1fr;gap:1rem;}.signup-art{display:none;}.signup-intro h1{max-width:16ch;}.top-actions{gap:.6rem;}.top-actions a:not(.cta){display:none;}}

/* Identidade visual do aplicativo */
.logo-crop{display:block;width:42px;height:46px;overflow:hidden;flex:none;position:relative;}
.logo-crop img{position:absolute;max-width:none;width:80px;height:80px;left:-19px;top:-10px;}
.brand-link{text-decoration:none;color:var(--leaf-800);}
.signup-art{display:grid;place-items:center;background:#f8f5ef;height:190px;border:1px solid var(--parchment-200);}
.signup-art img{width:180px;height:180px;object-fit:contain;}
.signup-art i,.signup-art span{display:none;}
.cta:hover,.cta:focus-visible{background:var(--cherry-700);}

/* Logo efetivamente usada no login do aplicativo */
.logo-crop{width:48px;height:48px;border-radius:12px;overflow:hidden;}
.logo-crop img{position:static;width:48px;height:48px;object-fit:cover;max-width:100%;}
.signup-art{height:230px;background:#214a2a;border-color:#214a2a;overflow:hidden;}
.signup-art img{width:200px;height:230px;object-fit:contain;}