```css
/* ==========================
   CNS TECH PREMIUM 3.0
========================== */

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

html{
scroll-behavior:smooth;
}

body{

font-family:'Montserrat',sans-serif;

background:#050505;

color:#fff;

overflow-x:hidden;

line-height:1.7;

}

img{

max-width:100%;

display:block;

}

a{

text-decoration:none;

color:white;

transition:.4s;

}

.container{

width:90%;

max-width:1300px;

margin:auto;

}

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

header{

position:fixed;

top:0;

left:0;

width:100%;

z-index:9999;

background:rgba(0,0,0,.85);

backdrop-filter:blur(14px);

border-bottom:1px solid rgba(0,170,255,.2);

}

header .container{

display:flex;

justify-content:space-between;

align-items:center;

padding:18px 0;

}

.logo{

display:flex;

align-items:center;

gap:18px;

}

.logo img{

width:70px;

border-radius:12px;

box-shadow:0 0 25px #0099ff;

}

.logo h2{

font-size:30px;

font-weight:800;

color:#fff;

}

.logo span{

display:block;

color:#00bfff;

font-size:13px;

letter-spacing:2px;

}

nav{

display:flex;

gap:35px;

}

nav a{

font-size:15px;

font-weight:600;

position:relative;

}

nav a::after{

content:"";

position:absolute;

left:0;

bottom:-8px;

width:0;

height:2px;

background:#00bfff;

transition:.4s;

}

nav a:hover{

color:#00bfff;

}

nav a:hover::after{

width:100%;

}

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

.hero{

position:relative;

height:100vh;

display:flex;

align-items:center;

justify-content:center;

text-align:center;

overflow:hidden;

background:
linear-gradient(rgba(0,0,0,.75),
rgba(0,0,0,.82)),
url("img/banner.jpg");

background-size:cover;

background-position:center;

}

.hero-bg{

position:absolute;

width:100%;

height:100%;

background:

radial-gradient(circle at center,
rgba(0,180,255,.25),
transparent 70%);

animation:pulse 6s infinite;

}

@keyframes pulse{

0%{

transform:scale(1);

opacity:.5;

}

50%{

transform:scale(1.2);

opacity:1;

}

100%{

transform:scale(1);

opacity:.5;

}

}

.hero-content{

position:relative;

z-index:2;

}

.hero h1{

font-size:64px;

font-weight:800;

margin-bottom:25px;

text-shadow:0 0 20px rgba(0,170,255,.6);

}

.hero p{

font-size:22px;

color:#ddd;

margin-bottom:40px;

}

.botoes{

display:flex;

justify-content:center;

gap:20px;

flex-wrap:wrap;

}

.btn{

background:#0099ff;

padding:18px 38px;

border-radius:50px;

font-weight:700;

box-shadow:0 0 25px rgba(0,153,255,.5);

transition:.4s;

}

.btn:hover{

transform:translateY(-5px);

background:#00bfff;

box-shadow:0 0 35px #00bfff;

}

.btn-secundario{

background:transparent;

border:2px solid #00bfff;

}

.btn-secundario:hover{

background:#00bfff;

}

/*================ DESTAQUES ================*/

.destaques{

padding:90px 0;

background:#0b0b0b;

}

.destaques .container{

display:grid;

grid-template-columns:repeat(auto-fit,minmax(250px,1fr));

gap:30px;

}

.box{

background:#111;

padding:40px;

border-radius:20px;

text-align:center;

border:1px solid rgba(0,170,255,.15);

transition:.4s;

}

.box:hover{

transform:translateY(-10px);

box-shadow:0 0 30px rgba(0,170,255,.25);

}

.box i{

font-size:55px;

margin-bottom:25px;

color:#00bfff;

}

.box h3{

margin-bottom:15px;

font-size:24px;

}

.box p{

color:#bdbdbd;

}
```
```css
/*================ SERVIÇOS ================*/

.servicos{

padding:110px 0;

background:#070707;

}

.servicos h2,
.empresa h2,
.missao h2,
.corporativo h2,
.marcas h2,
.avaliacoes h2,
.contato h2{

text-align:center;

font-size:42px;

margin-bottom:20px;

font-weight:800;

}

.subtitulo{

text-align:center;

color:#cfcfcf;

max-width:850px;

margin:auto;

margin-bottom:60px;

font-size:18px;

}

.cards{

display:grid;

grid-template-columns:repeat(auto-fit,minmax(280px,1fr));

gap:30px;

}

.card{

background:rgba(20,20,20,.90);

padding:35px;

border-radius:20px;

border:1px solid rgba(0,180,255,.18);

transition:.4s;

}

.card:hover{

transform:translateY(-12px);

box-shadow:0 0 35px rgba(0,180,255,.30);

border-color:#00bfff;

}

.card i{

font-size:55px;

color:#00bfff;

margin-bottom:25px;

}

.card h3{

font-size:24px;

margin-bottom:18px;

}

.card p{

color:#cfcfcf;

}

/*================ EMPRESA ================*/

.empresa{

padding:110px 0;

background:#101010;

}

.empresa p{

font-size:18px;

color:#d9d9d9;

margin-bottom:25px;

text-align:center;

max-width:1000px;

margin-left:auto;

margin-right:auto;

}

.numeros{

margin-top:60px;

display:grid;

grid-template-columns:repeat(auto-fit,minmax(200px,1fr));

gap:30px;

text-align:center;

}

.numeros div{

background:#111;

padding:35px;

border-radius:18px;

}

.numeros h3{

font-size:52px;

color:#00bfff;

margin-bottom:10px;

}

.numeros span{

font-size:18px;

}

/*================ MISSÃO ================*/

.missao{

padding:110px 0;

background:#070707;

}

/*================ CORPORATIVO ================*/

.corporativo{

padding:110px 0;

background:#101010;

}

/*================ MARCAS ================*/

.marcas{

padding:100px 0;

background:#050505;

}

.logos{

display:flex;

justify-content:center;

align-items:center;

flex-wrap:wrap;

gap:25px;

margin-top:50px;

}

.logos span{

padding:18px 30px;

background:#111;

border-radius:15px;

font-size:22px;

font-weight:700;

border:1px solid rgba(0,170,255,.20);

transition:.4s;

}

.logos span:hover{

background:#00bfff;

color:#000;

transform:scale(1.08);

}

/*================ AVALIAÇÕES ================*/

.avaliacoes{

padding:110px 0;

background:#0b0b0b;

}

.avaliacoes .card{

text-align:center;

}

.avaliacoes strong{

display:block;

margin-top:20px;

color:#00bfff;

}

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

.contato{

padding:110px 0;

background:#070707;

}

.grid-contato{

display:grid;

grid-template-columns:repeat(auto-fit,minmax(300px,1fr));

gap:35px;

margin-top:60px;

}

.grid-contato div{

background:#111;

padding:35px;

border-radius:18px;

border:1px solid rgba(0,170,255,.18);

}

.grid-contato h3{

font-size:26px;

margin-bottom:20px;

color:#00bfff;

}

.grid-contato p{

margin-bottom:15px;

color:#d9d9d9;

}

/*================ RODAPÉ ================*/

footer{

background:#000;

padding:70px 0 30px;

border-top:1px solid rgba(0,170,255,.20);

}

.rodape{

display:grid;

grid-template-columns:repeat(auto-fit,minmax(250px,1fr));

gap:40px;

margin-bottom:40px;

}

.rodape h3{

margin-bottom:15px;

color:#00bfff;

}

.rodape p{

color:#bdbdbd;

}

footer hr{

border:none;

height:1px;

background:#222;

margin:20px 0;

}

.copyright{

text-align:center;

color:#888;

}

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

.whatsapp{

position:fixed;

right:25px;

bottom:25px;

width:70px;

height:70px;

border-radius:50%;

background:#25D366;

display:flex;

justify-content:center;

align-items:center;

font-size:34px;

box-shadow:0 0 25px rgba(37,211,102,.6);

z-index:9999;

animation:flutuar 2s infinite;

}

@keyframes flutuar{

0%{transform:translateY(0);}

50%{transform:translateY(-8px);}

100%{transform:translateY(0);}

}

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

@media(max-width:900px){

header .container{

flex-direction:column;

}

nav{

margin-top:20px;

gap:18px;

flex-wrap:wrap;

justify-content:center;

}

.hero{

padding:120px 20px;

height:auto;

}

.hero h1{

font-size:42px;

}

.hero p{

font-size:18px;

}

.botoes{

flex-direction:column;

align-items:center;

}

}
```