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

html {
    font-size: 20px;
}

body {
    position: relative;
    font-family: 'Montserrat', sans-serif;
    color: #202429;
    background: #fff;
    font-weight: 300;
}

strong {
    font-weight: 700;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 25vw;
    height: 100vh;
    background: #373f48;
    color: #fff;
    padding: 0 55px;
}

header .logo-block {
    position: relative;
    background: #fff;
    padding: 35px 0;
    text-align: center;
    margin-bottom: 25px;
    height: 37vh;
}

header .logo-block h1 {
    position: absolute;
    top: -999px;
}

header .logo-block .line {
    width: 40%;
    height: 1px;
    background: #373f48;
    margin: 35px 0;
}

nav a span,
header .social-block,
section.realizations-block .list a .imgLiquidFill {
    -webkit-transition: all 300ms linear;
    -moz-transition: all 300ms linear;
    -ms-transition: all 300ms linear;
    -o-transition: all 300ms linear;
    transition: all 300ms linear;
}

nav {
    height: 53vh;
}

nav ul {
    list-style: none;
}

nav a {
    display: block;
    font-weight: 400;
    color: #fff;
    padding: 25px 0;
    text-decoration: none;
    position: relative;
    padding-left: 15%;
}

nav a span {
    display: block;
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40%;
    height: 1px;
    background: #fff;
}

nav a:hover span,
nav ul li.active a span {
    width: 100%;
}

header .social-block {
    display: block;
    padding: 25px 0;
    text-align: center;
    font-weight: 700;
    background: #55616e;
    height: 10vh;
    color: #fff;
    text-decoration: none;
}

header .social-block:hover {
    background: #fff;
    color: #373f48;
}

main {
    margin-left: 25vw;
}

.video-block {
    height: 100vh;
    overflow: hidden;
    position: relative;
}

.video-block video {
    width: auto;
    height: 100%;
}

.video-block .motto {
    position: absolute;
    right: 0;
    top: 19vh;
    padding: 35px 100px;
    background: #fff;
    font-size: 2rem;
    text-align: right;
    font-weight: 400;
}

.video-block .motto span {
    font-weight: 900;
}

.video-block .motto .line {
    position: absolute;
    left: 0;
    top: 60px;
    width: 25%;
    height: 1px;
    background: #373f48;
}

.video-block .square {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: #55616e;
    text-align: center;
    display: none;
}

.video-block .square a {
    display: inline-block;
    width: 40px;
    height: 80px;
    background: #373f48;
    text-align: center;
    padding-top: 20px;
    margin-top: -20px;
}

.video-block .square a img {
    width: 25px;
}

.center {
    padding: 50px 100px;
}

.title {
    padding-left: 200px;
    position: relative;
    margin-bottom: 50px;
}

.title .line {
    position: absolute;
    bottom: 30px;
    left: 0;
    width: 150px;
    height: 1px;
    background: #373f48;
}

h2 {
    display: inline-block;
    font-size: 2.5rem;
    font-weight: 900;
}

h2 span {
    color: #55616e;
}

p {
    margin-bottom: 25px;
}

.txt {
    line-height: 200%;
}

section.aboutus-block .txt {
    padding-left: 200px;
}

.imgLiquidFill {
    width: 100%;
    height: 100%;
}

section.offer-block .list {
    display: flex;
    flex-wrap: wrap;
}

section.offer-block .list .item {
    flex-basis: 50%;
    display: flex;
}

section.offer-block .list .item.img {
    background: #373f48;
}

section.offer-block .list .item.img img {
    display: block;
    width: 100%;
}

section.offer-block .list .item.content {
    display: flex;
    align-items: center;
    padding: 0 50px;
    font-weight: 700;
}

section.offer-block .list .item.content span {
    display: inline-block;
    font-weight: 300;
    padding-left: 50px;
}

section.realizations-block .list {
    display: flex;
    flex-wrap: wrap;
}

section.realizations-block .list a {
    display: block;
    flex-basis: 33.333333%;
    height: 350px;
    background: #373f48;
    overflow: hidden;
}

section.realizations-block .list a .imgLiquidFill {
    opacity: 0.5;
}

section.realizations-block .list a:hover .imgLiquidFill {
    opacity: 1;
}

section.contact-block .txt {
    display: flex;
}

section.contact-block .left,
section.contact-block .right {
    flex-basis: 50%;
}

section.contact-block a {
    font-weight: 700;
    text-decoration: none;
    color: #202429;
}

section.map-block .map {
    height: 600px;
    overflow: hidden;
}

section.map-block .map iframe {
    width: 100%;
    height: 100%;
}

.copyright {
    text-align: right;
    font-size: 0.75rem;
    padding-top: 0;
}

.copyright a {
    font-weight: 700;
    color: #202429;
    text-decoration: none;
}

section.certificates-block .list {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

section.certificates-block .list a {
    display: block;
    flex-basis: 22%;
    border: 1px solid #202429;
    margin-bottom: 50px;
}

section.certificates-block .list a img {
    display: block;
    width: 100%;
}

section.certificates-block .list::after {
    content: '';
    flex: auto;
}

section.certificates-block .list a:last-child {
    margin-left: 4%;
}

.navbar {
    display: none;
    position: absolute;
    top: 50px;
    right: 15vw;
    width: 50px;
    height: 45px;
    z-index: 40;
    cursor: pointer;
    z-index: 900;
}

.bar1,
.bar2,
.bar3 {
    width: 100%;
    height: 6px;
    margin-bottom: 6px;
    background-color: #373f48;
    transition: all 0.3s ease-in-out;
}

.navbar-on .bar1,
.navbar-on .bar2,
.navbar-on .bar3 {
    background: #fff;
}

.navbar-on .bar1 {
    transform-origin: 10% 60%;
    transform: rotate(45deg);
}

.navbar-on .bar3 {
    transform-origin: 20% 80%;
    transform: rotate(-45deg);
}

.navbar-on .bar2 {
    background-color: transparent;
}

.navbar-content {
    position: fixed;
    background: rgba(30, 50, 69, 0.95);
    width: 100vw;
    height: 100vh;
    z-index: 800;
    display: none;
}

.navbar-content ul {
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 100vh;
    align-content: center;
    justify-content: center;
    list-style: none;
    font-weight: 800;
    text-transform: uppercase;
}

.navbar-content ul li {
    flex-basis: 10%;
    text-align: center;
}

.navbar-content ul li a {
    color: #fff;
    font-size: 1.25rem;
    font-weight: bold;
    text-decoration: none;
}

.navbar-content ul li.active a {
    color: #55616e;
}

.overflow {
    overflow-x: hidden;
}