.oxi-guide{
  --tinta:#17303f;
  --ar:#f3f7f8;
  --branco:#ffffff;
  --oxi:#1e7a52;
  --oxi-claro:#e6f2ec;
  --linha:#d7e0e4;
  --alerta:#8a5a00;
  --alerta-fundo:#fdf3dd;
  --max:840px;
}
.oxi-guide *{margin:0;padding:0;box-sizing:border-box}


.oxi-guide{font-family:Georgia,'Times New Roman',serif;color:var(--tinta);background:var(--branco);font-size:18px;line-height:1.65}
.oxi-guide__sans{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif}
.oxi-guide__wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.oxi-guide a{color:var(--oxi)}
.oxi-guide a:focus-visible,.oxi-guide button:focus-visible{outline:3px solid var(--oxi);outline-offset:3px}

/* Trilha */
.oxi-guide__breadcrumb{font-size:14px;color:#5a7080;padding:18px 0 0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif}
.oxi-guide__breadcrumb a{color:#5a7080;text-decoration:none}
.oxi-guide__breadcrumb a:hover{text-decoration:underline}

/* Hero */
.oxi-guide__hero{background:linear-gradient(180deg,var(--ar) 0%,var(--branco) 100%);border-bottom:1px solid var(--linha)}
.oxi-guide__hero .oxi-guide__wrap{padding-top:36px;padding-bottom:48px}
.oxi-guide__eyebrow{display:inline-block;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--oxi);font-weight:700;margin-bottom:14px;border-left:3px solid var(--oxi);padding-left:10px;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif}
.oxi-guide h1{font-size:clamp(30px,4.4vw,42px);line-height:1.15;font-weight:700;margin-bottom:16px}
.oxi-guide__hero p.oxi-guide__sub{font-size:19px;color:#3c5563;max-width:56ch}

/* Corpo */
.oxi-guide main section{padding:24px 0}
.oxi-guide main section:first-of-type{padding-top:26px}
.oxi-guide h2{font-size:clamp(23px,3vw,29px);line-height:1.25;margin-bottom:14px}
.oxi-guide h3{font-size:19px;margin-bottom:8px}
.oxi-guide p{margin-bottom:16px;max-width:68ch}
.oxi-guide__label{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--oxi);font-weight:700;display:block;margin-bottom:8px;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif}

/* Listas */
ul.oxi-guide__checked-list{list-style:none;max-width:68ch;margin-bottom:18px}
ul.oxi-guide__checked-list li{padding:11px 0 11px 34px;position:relative;border-bottom:1px solid var(--linha)}
ul.oxi-guide__checked-list li:last-child{border-bottom:none}
ul.oxi-guide__checked-list li::before{content:"✓";position:absolute;left:0;top:12px;width:23px;height:23px;border-radius:50%;background:var(--oxi);color:#fff;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center}
ul.oxi-guide__list{max-width:68ch;margin:0 0 18px 22px}
ul.oxi-guide__list li{margin-bottom:8px}

/* Caixa de destaque (fórmula) */
.oxi-guide__formula{background:var(--oxi-claro);border:1px solid #bcdbcb;border-left:5px solid var(--oxi);border-radius:8px;padding:26px 28px;margin:8px 0 24px}
.oxi-guide__formula .oxi-guide__formula-line{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif;font-size:20px;font-weight:700;margin-bottom:12px;line-height:1.45}
.oxi-guide__formula .oxi-guide__formula-line:last-of-type{margin-bottom:0}
.oxi-guide__formula small{display:block;font-size:15px;color:#3c5563;margin-top:14px;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif}

/* Exemplo */
.oxi-guide__example{border:1px solid var(--linha);border-radius:8px;padding:22px 24px;margin-bottom:24px;background:#fafcfc}
.oxi-guide__example strong{color:var(--oxi)}

/* Aviso */
.oxi-guide__notice{background:var(--alerta-fundo);border:1px solid #ecd9ac;border-left:5px solid var(--alerta);border-radius:8px;padding:20px 24px;margin:24px 0}
.oxi-guide__notice p{margin:0;font-size:16.5px}
.oxi-guide__notice strong{color:var(--alerta)}

/* Tabelas */
.oxi-guide__table-wrap{overflow-x:auto;margin-bottom:10px}
.oxi-guide table{width:100%;border-collapse:collapse;font-size:16.5px;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif;min-width:520px}
.oxi-guide th{text-align:left;padding:12px 14px;background:var(--tinta);color:#fff;font-size:13px;letter-spacing:.06em;text-transform:uppercase;font-weight:700}
.oxi-guide td{padding:12px 14px;border-bottom:1px solid var(--linha)}
.oxi-guide tr:nth-child(even) td{background:#f6f9f9}
.oxi-guide__caption{font-size:15px;color:#5a7080;margin-bottom:24px;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif}

/* Comparativo em duas colunas */
.oxi-guide__two{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-bottom:24px}
.oxi-guide__card{border:1px solid var(--linha);border-radius:10px;padding:24px 22px;background:#fff}
.oxi-guide__card h3{color:var(--oxi);font-size:20px}
.oxi-guide__card ul{list-style:none;margin:0}
.oxi-guide__card li{padding:7px 0 7px 20px;position:relative;font-size:16px}
.oxi-guide__card li::before{content:"·";position:absolute;left:4px;top:6px;color:var(--oxi);font-weight:700;font-size:20px}

/* CTA */
.oxi-guide__cta{background:var(--ar);border-top:1px solid var(--linha);border-bottom:1px solid var(--linha);padding:40px 0;margin-top:16px}
.oxi-guide__cta h2{margin-bottom:10px}
.oxi-guide__cta p{margin-bottom:22px}
.oxi-guide__button{display:inline-block;padding:14px 28px;border-radius:6px;font-size:17px;font-weight:600;text-decoration:none;margin:0 10px 10px 0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif}
.oxi-guide__button--primary{background:var(--oxi);color:#fff;box-shadow:0 2px 8px rgba(30,122,82,.28)}
.oxi-guide__button--secondary{background:#fff;color:var(--tinta);border:1.5px solid var(--tinta)}

/* Continue lendo */
.oxi-guide__continue{padding:40px 0}
.oxi-guide__continue ul{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.oxi-guide__continue a{display:block;border:1px solid var(--linha);border-radius:8px;padding:18px 20px;text-decoration:none;color:var(--tinta);transition:border-color .15s ease}
.oxi-guide__continue a:hover{border-color:var(--oxi)}
.oxi-guide__continue a span{display:block;font-size:14px;color:var(--oxi);font-weight:700;margin-bottom:4px;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif}

/* Rodapé de confiança */
.oxi-guide__seal{text-align:center;padding:34px 24px;background:var(--ar);border-top:1px solid var(--linha);font-size:15.5px;color:#3c5563;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif}

@media (max-width:720px){
  .oxi-guide{font-size:17px}
  .oxi-guide__two,.oxi-guide__continue ul{grid-template-columns:1fr}
  .oxi-guide main section{padding:19px 0}
  .oxi-guide__formula{padding:20px 20px}
  .oxi-guide__formula .oxi-guide__formula-line{font-size:17px}
}