```css
/* =========================
   FONTES
========================= */

@font-face {
    font-family: 'Secrcode';
    src: url('../fonts/secrcode.ttf');
}

/* =========================
   VARIÁVEIS
========================= */

:root{
    --blue:#24375d;
    --blue-dark:#09142f;
    --green:#a4c61b;
    --light:#f5f7fa;
    --text:#24375d;
}

/* =========================
   RESET
========================= */

*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

html{
    scroll-behavior:smooth;
}

body{
    font-family:'Secrcode', Arial, sans-serif;
    color:var(--text);
    background:#fff;
    line-height:1.7;
}

img{
    display:block;
    max-width:100%;
}

.container{
    width:90%;
    max-width:1280px;
    margin:0 auto;
}

/* =========================
   HEADER
========================= */

.header{
    position:fixed;
    top:0;
    left:0;
    width:100%;
    background:#fff;
    z-index:999;
    box-shadow:0 2px 10px rgba(0,0,0,.08);
}

.header-container{
    min-height:110px;
    display:flex;
    justify-content:space-between;
    align-items:center;
}

.logo-header{
    height:85px;
    width:auto;
}

.btn-header{
    background:var(--green);
    color:#fff;
    text-decoration:none;
    padding:14px 24px;
    border-radius:10px;
    font-weight:700;
    transition:.3s;
}

.btn-header:hover{
    opacity:.9;
}

/* =========================
   HERO
========================= */

.hero{
    min-height:100vh;
    background:
    linear-gradient(rgba(36,55,93,.85),
    rgba(36,55,93,.85)),
    url('../img/banner-linkedin.jpeg');

    background-size:cover;
    background-position:center;

    display:flex;
    align-items:center;
    justify-content:center;

    text-align:center;

    padding-top:110px;
}

.hero-content{
    max-width:900px;
}

.hero-badge{
    color:var(--green);
    font-weight:700;
    display:block;
    margin-bottom:20px;
    font-size:1rem;
}

.hero h1{
    font-size:3.6rem;
    line-height:1.15;
    color:#fff;
    margin-bottom:25px;
}

.hero p{
    color:#fff;
    font-size:1.2rem;
    max-width:750px;
    margin:0 auto 40px;
}

.hero-buttons{
    display:flex;
    justify-content:center;
    gap:20px;
    flex-wrap:wrap;
}

.btn-primary,
.btn-secondary{
    display:inline-block;
    text-decoration:none;
    padding:18px 32px;
    border-radius:12px;
    font-weight:700;
}

.btn-primary{
    background:var(--green);
    color:#fff;
}

.btn-secondary{
    border:2px solid #fff;
    color:#fff;
}

/* =========================
   SEÇÕES
========================= */

section{
    padding:90px 0;
}

h2{
    text-align:center;
    font-size:2.6rem;
    margin-bottom:15px;
    color:var(--blue);
}

.section-description{
    text-align:center;
    max-width:700px;
    margin:0 auto 50px;
}

/* =========================
   CASES
========================= */

.cases{
    background:var(--light);
}

.cases-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:25px;
}

.case-card{
    background:#fff;
    border-radius:20px;
    padding:35px;
    min-height:260px;
    box-shadow:0 10px 25px rgba(0,0,0,.05);
}

.case-number{
    display:block;
    color:var(--green);
    font-size:2.3rem;
    font-weight:700;
    margin-bottom:15px;
}

.case-card h3{
    color:var(--green);
    font-size:1.8rem;
    margin-bottom:15px;
    line-height:1.2;
}

.case-card p{
    font-size:1rem;
}

/* =========================
   CLIENTES
========================= */

.clients-grid{
    display:flex;
    justify-content:center;
    flex-wrap:wrap;
    gap:25px;
}

.client-card{
    width:220px;
    height:140px;
    border-radius:20px;
    border:1px solid #e6e6e6;
    background:#fff;
    display:flex;
    justify-content:center;
    align-items:center;
}

.client-card img{
    max-width:80%;
    max-height:80%;
}

.bg-dark{
    background:var(--blue);
    border:none;
}

.client-card-dark{
    background:var(--blue);
    border:none;
}

.client-card-dark img{
    max-width:55%;
}

/* =========================
   MERCADOS
========================= */

.market-list{
    text-align:center;
    max-width:1000px;
    margin:0 auto;
    font-size:1.15rem;
    line-height:2;
}

/* =========================
   SERVIÇOS
========================= */

.services-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:25px;
}

.service-card{
    border:1px solid #e6e6e6;
    border-radius:16px;
    padding:30px;
}

.service-card h3{
    margin-bottom:12px;
}

/* =========================
   SOBRE
========================= */

.about{
    background:var(--light);
}

.about-container{
    display:grid;
    grid-template-columns:350px 1fr;
    gap:60px;
    align-items:center;
}

.about-image img{
    border-radius:20px;
}

.about-content h2{
    text-align:left;
}

.about-content p{
    margin-bottom:20px;
}

/* =========================
   CONTATO
========================= */

.contact{
    background:var(--blue);
    color:#fff;
}

.contact h2,
.contact p{
    color:#fff;
    text-align:center;
}

.contact-form{
    max-width:800px;
    margin:50px auto 0;
}

.contact-form input,
.contact-form textarea{
    width:100%;
    padding:18px;
    border:none;
    border-radius:8px;
    margin-bottom:18px;
    font-size:16px;
}

.contact-form textarea{
    min-height:180px;
}

.contact-form button{
    background:var(--green);
    color:#fff;
    border:none;
    padding:16px 32px;
    border-radius:8px;
    font-weight:700;
    cursor:pointer;
}

/* =========================
   CTA FINAL
========================= */

.cta-final{
    text-align:center;
}

.cta-final h2{
    margin-bottom:20px;
}

.cta-final p{
    max-width:800px;
    margin:0 auto 35px;
}

.cta-final .btn-primary{
    display:inline-block;
}

/* =========================
   FOOTER
========================= */

.footer{
    background:linear-gradient(
    90deg,
    #09142f,
    #132652
    );
    color:#fff;
    padding:70px 0;
}

.footer-content{
    text-align:center;
}

.footer-logo{
    height:80px;
    width:auto;
    margin:0 auto 30px;
}

.footer-content p{
    margin-bottom:10px;
}

.footer-divider{
    width:200px;
    height:1px;
    background:rgba(255,255,255,.15);
    margin:30px auto;
}

/* =========================
   WHATSAPP
========================= */

.whatsapp-float{
    position:fixed;
    right:25px;
    bottom:25px;
    z-index:999;
}

.whatsapp-float img{
    width:140px;
    height:140px;
}

/* =========================
   RESPONSIVO
========================= */

@media(max-width:1024px){

    .cases-grid,
    .services-grid{
        grid-template-columns:repeat(2,1fr);
    }

    .about-container{
        grid-template-columns:1fr;
        text-align:center;
    }

    .about-content h2{
        text-align:center;
    }

    .hero h1{
        font-size:2.8rem;
    }
}

@media(max-width:768px){

    .header-container{
        flex-direction:column;
        gap:15px;
        padding:20px 0;
    }

    .cases-grid,
    .services-grid{
        grid-template-columns:1fr;
    }

    .hero h1{
        font-size:2.2rem;
    }

    .logo-header{
        height:65px;
    }

    .whatsapp-float img{
        width:90px;
        height:90px;
    }
}
```