* {
    box-sizing: border-box;
}

html {
    height: 100%;
    font-family: sans-serif;
    -ms-text-size-adjust: 100%;
    -webkit-text-size-adjust: 100%;
}

body, figure {
    margin: 0;
}

article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
main,
menu,
nav,
section,
summary {
    display: block;
}

*:focus {
    outline: none;
}

a {
    text-decoration: none;
}

a:active,
a:hover {
    outline: 0;
}

small {
    font-size: 80%;
}

img {
    max-width: 100%;
    border: 0;
}

address {
    font-style: normal;
}

button,
input,
optgroup,
textarea {
    border: 0;
    background: none;
    color: inherit;
    font: inherit;
    margin: 0;
    -webkit-appearance: none;
}

textarea {
    overflow: auto;
    resize: none;
}

table {
    border-collapse: collapse;
    border-spacing: 0;
}

ul, ol {
    margin: 0;
    padding-left: 0;
    list-style-type: none;
}

td, th {
    padding: 0;
}

p {
    margin: 0;
}

input[type=search]::-ms-clear {
    display: none;
    width: 0;
    height: 0;
}

input[type=search]::-ms-reveal {
    display: none;
    width: 0;
    height: 0;
}

/* clears the 'X' from Chrome */
input[type="search"]::-webkit-search-decoration,
input[type="search"]::-webkit-search-cancel-button,
input[type="search"]::-webkit-search-results-button,
input[type="search"]::-webkit-search-results-decoration {
    display: none;
}

input::-ms-clear {
    display: none;
}

body.ovh {
    overflow: hidden;
}

input[type="date"]::-webkit-inner-spin-button {
    display: none;
    -webkit-appearance: none;
}

input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus,
input:-webkit-autofill:active {
    -webkit-transition: "color 9999s ease-out, background-color 9999s ease-out";
    -webkit-transition-delay: 9999s;
}

a:focus,
.button:focus {
    text-decoration: none;
    outline: none;
    box-shadow: none;
}

.btn:focus,
button:focus {
    box-shadow: none;
    outline: none;
}

input[type="data"]::-webkit-clear-button {
    display: none;
}

a:focus,
a:hover {
    text-decoration: none;
}

*[hidden] {
    display: none !important;
}

/* Slider */
.slick-slider {
    position: relative;
    display: block;
    box-sizing: border-box;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
    -khtml-user-select: none;
    -ms-touch-action: pan-y;
    touch-action: pan-y;
    -webkit-tap-highlight-color: transparent;
}

.slick-list {
    position: relative;
    display: block;
    overflow: hidden;
    margin: 0;
    padding: 0;
}

.slick-list:focus {
    outline: none;
}

.slick-list.dragging {
    cursor: pointer;
    cursor: hand;
}

.slick-slider .slick-track,
.slick-slider .slick-list {
    -webkit-transform: translate3d(0, 0, 0);
    -ms-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0);
}

.slick-track {
    position: relative;
    top: 0;
    left: 0;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.slick-track:before,
.slick-track:after {
    display: table;
    content: '';
}

.slick-track:after {
    clear: both;
}

.slick-loading .slick-track {
    visibility: hidden;
}

.slick-slide {
    display: none;
    float: left;
    height: 100%;
    min-height: 1px;
}

[dir='rtl'] .slick-slide {
    float: right;
}

.slick-slide img {
    display: block;
}

.slick-slide.slick-loading img {
    display: none;
}

.slick-slide.dragging img {
    pointer-events: none;
}

.slick-initialized .slick-slide {
    display: block;
}

.slick-loading .slick-slide {
    visibility: hidden;
}

.slick-vertical .slick-slide {
    display: block;
    height: auto;
    border: 1px solid transparent;
}

.slick-arrow.slick-hidden {
    display: none;
}

@font-face {
    font-family: 'SF Pro Display';
    src: url("fonts/SFProDisplay/SFProDisplayRegular/SFProDisplayRegular.eot");
    src: url("fonts/SFProDisplay/SFProDisplayRegular/SFProDisplayRegular.woff2") format("woff2"), url("fonts/SFProDisplay/SFProDisplayRegular/SFProDisplayRegular.woff") format("woff"), url("fonts/SFProDisplay/SFProDisplayRegular/SFProDisplayRegular.ttf") format("truetype");
    font-weight: 400;
    font-style: normal;
}

@font-face {
    font-family: 'SF Pro Display';
    src: url("fonts/SFProDisplay/SFProDisplayMedium/SFProDisplayMedium.eot");
    src: url("fonts/SFProDisplay/SFProDisplayMedium/SFProDisplayMedium.woff2") format("woff2"), url("fonts/SFProDisplay/SFProDisplayMedium/SFProDisplayMedium.woff") format("woff"), url("fonts/SFProDisplay/SFProDisplayMedium/SFProDisplayMedium.ttf") format("truetype");
    font-weight: 500;
    font-style: normal;
}

.row {
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
}

.row-wrap {
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
}

.row-column {
    -webkit-flex-direction: column;
    -ms-flex-direction: column;
    flex-direction: column;
}

.justify-content-between {
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-justify-content: space-between;
    -ms-flex-pack: justify;
    justify-content: space-between;
}

.align-items-end {
    -webkit-align-items: flex-end;
    -ms-flex-align: end;
    align-items: flex-end;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
}

.align-items-center {
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
}

.justify-content-end {
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-justify-content: flex-end;
    -ms-flex-pack: end;
    justify-content: flex-end;
}

.justify-content-between_align-center {
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-justify-content: space-between;
    -ms-flex-pack: justify;
    justify-content: space-between;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
}

.justify-content-center {
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-justify-content: center;
    -ms-flex-pack: center;
    justify-content: center;
}

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

.container {
    max-width: 1220px;
    padding: 0 15px;
    margin: 0 auto;
}

@media (min-width: 1140px) {
    .container {
        padding: 0 30px;
    }
}

img.alignright {
    max-width: calc(50% - 20px);
    height: auto;
    float: right;
    margin: 0 0 30px 20px;
}

@media (max-width: 767px) {
    img.alignright {
        display: block;
        max-width: 100%;
        float: none;
        margin: 0 auto 40px;
    }
}

img.alignleft {
    float: left;
    height: auto;
    max-width: calc(50% - 20px);
    margin: 0 20px 30px 0;
}

@media (max-width: 767px) {
    img.alignleft {
        max-width: 100%;
        display: block;
        float: none;
        margin: 0 auto 40px;
    }
}

img.aligncenter {
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.alignright {
    float: right;
}

.alignleft {
    float: left;
}

.aligncenter {
    display: block;
    margin-left: auto;
    margin-right: auto;
}

h1, .h1, h2, .h2, h3, .h3, h4, .h4, h5, .h5 {
    margin-bottom: 0;
    margin-top: 0;
    font-family: 'SF Pro Display';
    display: block;
}

h1, .h1 {
    line-height: 1.1;
    font-weight: 500;
    margin-bottom: 20px;
    font-size: 2.35294rem;
}

@media (min-width: 767px) {
    h1, .h1 {
        font-size: 2.58824rem;
    }
}

@media (min-width: 1279px) {
    h1, .h1 {
        font-size: 3.41176rem;
    }
}

h2, .h2 {
    font-size: 1.29412rem;
    font-weight: 700;
    margin-bottom: 25px;
    letter-spacing: 0.03em;
    line-height: 1.2;
}

h3, .h3 {
    font-size: 1.41176rem;
    line-height: 1.5;
    letter-spacing: 0.03em;
    font-weight: 400;
}

@media (max-width: 699px) {
    h3, .h3 {
        font-size: 16px;
    }
}

h4, .h4 {
    font-size: 1.47059rem;
    line-height: 1.1;
    font-weight: 400;
}

h5, .h5 {
    font-size: 1.17647rem;
}

p a {
    text-decoration: underline;
    color: #3783ef;
}

p a:hover {
    text-decoration: none;
}

span.wpcf7-not-valid-tip {
    position: absolute;
    bottom: -20px;
}

span.wpcf7-not-valid-tip {
    color: #f00;
    font-size: 12px;
    font-weight: normal;
    display: block;
}

a,
.button, .btn {
    transition: color 0.35s cubic-bezier(0.51, 0.92, 0.24, 1.15) 0s;
}

select::-ms-expand {
    display: none;
}

.btn {
    min-width: 182px;
    background: #000;
    text-align: center;
    display: inline-block;
    border-radius: 40px;
    line-height: 26px;
    position: relative;
    height: 50px;
    margin: 34px 0;
    color: #fff;
    padding: 10px 20px;
    cursor: pointer;
    font-size: 17px;
    font-weight: 500;
    white-space: nowrap;
    border: 1.4px solid #000;
    transition: all .2s ease-in;
}

.btn [class^="icon-"], .btn [class*=" icon-"] {
    margin-right: 9px;
    display: inline-block;
}

.btn:hover, .btn:active {
    background: none;
    color: #000;
}

.btn:disabled, .btn.disabled {
    background: #F3F2F1;
    border-color: #F3F2F1;
}

.btn:focus {
    border-color: rgba(0, 0, 0, 0.9);
    background: rgba(0, 0, 0, 0.9);
}

@media (min-width: 0px) {
    html {
        font-size: 15px;
    }
}

@media (min-width: 1199px) {
    html {
        font-size: 17px;
    }
}

.wrapper {
    overflow: hidden;
    min-height: 100vh;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-flex-direction: column;
    -ms-flex-direction: column;
    flex-direction: column;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-size: 17px;
    color: #252530;
    min-width: 320px;
    background: #fff;
    font-family: 'SF Pro Display', Arial, Helvetica, sans-serif;
    line-height: 1.47;
    height: 100%;
    font-weight: 400;
}

button:focus-visible,
a:focus-visible {
    outline: 2px dashed rgba(0, 0, 0, 0.8);
}

.wrapper_input input::-webkit-input-placeholder {
    /* Chrome/Opera/Safari */
    color: #605E5C;
    opacity: 1;
}

.wrapper_input input::-moz-placeholder {
    /* Firefox 19+ */
    color: #605E5C;
    opacity: 1;
}

.wrapper_input input:-ms-input-placeholder {
    /* IE 10+ */
    color: #605E5C;
    opacity: 1;
}

.wrapper_input input:-moz-placeholder {
    /* Firefox 18- */
    color: #605E5C;
    opacity: 1;
}

.main-banner {
    padding-top: 140px;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    min-height: 768px;
    padding-bottom: 20px;
    background: linear-gradient(97.21deg, #FCFFF0 2.52%, #F6FBFB 26.82%, #F0F3FA 64.34%, #F4E5D8 101.78%);
}

.main-banner .container > .row {
    height: 100%;
    display: block;
}

.main-banner_info {
    -webkit-flex: 0 0 100%;
    -ms-flex: 0 0 100%;
    flex: 0 0 100%;
    max-width: 100%;
    margin-bottom: 60px;
}

.main-banner_info h1 {
    margin-bottom: 20px;
}

.main-banner_info .desk {
    margin-bottom: 35px;
    font-size: 17px;
}

.main-banner_img {
    text-align: center;
}

@media (min-width: 767px) {
    .main-banner {
        -webkit-align-items: center;
        -ms-flex-align: center;
        align-items: center;
        min-height: 768px;
        padding-top: 120px;
        padding-bottom: 0;
    }
    .main-banner_img {
        text-align: left;
        margin: -8% -7% 0 -2%;
    }
    .main-banner_info {
        -webkit-flex: 0 0 49%;
        -ms-flex: 0 0 49%;
        flex: 0 0 49%;
        max-width: 49%;
        margin-bottom: 12%;
    }
    .main-banner_info .desk {
        max-width: 85%;
    }
    .main-banner .container > .row {
        display: -webkit-flex;
        display: -ms-flexbox;
        display: flex;
        -webkit-align-items: center;
        -ms-flex-align: center;
        align-items: center;
    }
}

@media (min-width: 1280px) {
    .main-banner {
        min-height: 880px;
    }
}

.download-list {
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
}

.download-list li {
    transition: opacity .25s ease-in;
    opacity: 1;
}

.download-list li:hover {
    opacity: 0.7;
}

.download-list li + li {
    margin-left: 15px;
}

.about-items {
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    margin: 0 -24px;
}

.about-item {
    padding: 0 24px;
    -webkit-flex: 0 0 100%;
    -ms-flex: 0 0 100%;
    flex: 0 0 100%;
    margin-bottom: 1.47059rem;
    max-width: 100%;
}

.about-item .title {
    font-size: 20px;
    font-weight: 500;
    margin-bottom: 9px;
    line-height: 1.1;
}

.about-item .wrap {
    position: relative;
    padding: 25px 15px;
    background: #FFFFFF;
    height: 100%;
    box-shadow: 0px 6px 12px -6px rgba(24, 39, 75, 0.12), 0px 8px 24px -4px rgba(24, 39, 75, 0.08);
}

@media (min-width: 767px) {
    .about-item .wrap {
        padding: 25px 20px;
    }
}

.about-item .wrap::before {
    content: "";
    height: 3px;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(90.01deg, #C3ABB3 0%, #9EE7C9 49.54%, #5090F6 101.17%);
}

@media (min-width: 767px) {
    .about-item {
        -webkit-flex: 0 0 50%;
        -ms-flex: 0 0 50%;
        flex: 0 0 50%;
        margin-bottom: 2.47059rem;
        max-width: 50%;
    }
}

@media (min-width: 1280px) {
    .about-item {
        -webkit-flex: 0 0 33.333%;
        -ms-flex: 0 0 33.333%;
        flex: 0 0 33.333%;
        max-width: 33.333%;
    }
    .about-item .wrap {
        padding: 42px 25px;
    }
}

.about-section {
    padding: 4.41176rem 0 3.82353rem;
}

.about-section .about-title {
    font-size: 32px;
    margin-bottom: 36px;
    line-height: 1.1;
    font-weight: 500;
}

@media (min-width: 767px) {
    .about-section {
        padding: 4.70588rem 0 5.88235rem;
    }
}

@media (min-width: 1280px) {
    .about-section {
        padding: 7.05882rem 0 8.23529rem;
    }
}

.slider-section {
    padding: 4.41176rem 0 5.58824rem;
    min-height: 880px;
    background: linear-gradient(97.21deg, #FCFFF0 2.52%, #F6FBFB 26.82%, #F0F3FA 64.34%, #F4E5D8 101.78%);
}

.slider-section.even {
    background: linear-gradient(97.21deg, #FCFFF0 2.52%, #F6FBFB 26.82%, #F0F3FA 64.34%, #F4E5D8 101.78%);
}

.slider-section.add {
    background: #fff;
}

.slider-section.add .slick-dots button {
    background: #EBEAEA;
}

.slider-section .slick-dots {
    position: absolute;
    bottom: 0;
    right: 50%;
    -webkit-transform: translateX(50%);
    -ms-transform: translateX(50%);
    transform: translateX(50%);
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
}

@media (min-width: 767px) {
    .slider-section .slick-dots {
        display: block;
        right: 15px;
        top: 50%;
        -webkit-transform: translateY(-50%);
        -ms-transform: translateY(-50%);
        transform: translateY(-50%);
        bottom: auto;
    }
}

@media (min-width: 1279px) {
    .slider-section .slick-dots {
        right: -50px;
    }
}

.slider-section .slick-dots li {
    height: 10px;
    width: 10px;
}

.slider-section .slick-dots .slick-active button {
    box-shadow: 0 0 0 16px rgba(52, 47, 47, 0.1);
    background: #342F2F;
}

.slider-section .slick-dots li + li {
    margin: 0 0 0 30px;
}

@media (min-width: 767px) {
    .slider-section .slick-dots li + li {
        margin: 30px 0 0;
    }
}

.slider-section .slick-dots button {
    cursor: pointer;
    width: 10px;
    height: 10px;
    background: #DBD1CC;
    font-size: 0;
    padding: 0;
    display: block;
    border-radius: 50%;
    transition: all 0.3s ease-in;
    box-shadow: 0 0 0 0px rgba(52, 47, 47, 0.1);
}

.slider-section .slick-list {
    padding-bottom: 70px;
}

@media (min-width: 767px) {
    .slider-section {
        top: 50%;
        right: 2%;
        bottom: auto;
        display: block;
        -webkit-transform: none;
        -ms-transform: none;
        transform: none;
        padding: 5.29412rem 0;
    }
    .slider-section .slick-list {
        padding-bottom: 0px;
    }
}

@media (min-width: 1280px) {
    .slider-section {
        padding: 8.82353rem 0;
    }
}

.slider-title {
    font-size: 2.35294rem;
    font-weight: 500;
    line-height: 1.1;
    max-width: 100%;
    -webkit-flex: 0 0 100%;
    -ms-flex: 0 0 100%;
    flex: 0 0 100%;
    text-align: center;
    margin-bottom: 60px;
    padding: 0 20px 0 0;
}

@media (min-width: 767px) {
    .slider-title {
        font-size: 2.58824rem;
    }
}

@media (min-width: 1280px) {
    .slider-title {
        font-size: 3.41176rem;
        -webkit-flex: auto;
        -ms-flex: auto;
        flex: auto;
        margin-bottom: 0;
        text-align: left;
        max-width: 395px;
    }
}

.slider-item {
    display: -webkit-flex !important;
    display: -ms-flexbox !important;
    display: flex !important;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-justify-content: space-between;
    -ms-flex-pack: justify;
    justify-content: space-between;
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
}

.slider-item .img {
    margin: 0;
}

@media (max-width: 1279px) {
    .slider-item .img {
        max-width: 45%;
        text-align: center;
        -webkit-flex: 0 0 45%;
        -ms-flex: 0 0 45%;
        flex: 0 0 45%;
    }
    .slider-item .img img {
        display: inline-block;
    }
}

@media (max-width: 767px) {
    .slider-item .img {
        max-width: 100%;
        -webkit-flex: 0 0 100%;
        -ms-flex: 0 0 100%;
        flex: 0 0 100%;
        margin-bottom: 35px;
    }
}

.slider-item .box {
    max-width: 100%;
    -webkit-flex: 0 0 100%;
    -ms-flex: 0 0 100%;
    flex: 0 0 100%;
    padding: 0 10px;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-flex-direction: column;
    -ms-flex-direction: column;
    flex-direction: column;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
    text-align: center;
}

.slider-item .box .btn {
    margin: 30px auto 0;
}

.slider-item .box .title {
    line-height: 1.1;
    margin-bottom: 20px;
    font-size: 25px;
    text-align: center;
}

@media (min-width: 767px) {
    .slider-item {
        -webkit-flex: 0 0 100%;
        -ms-flex: 0 0 100%;
        flex: 0 0 100%;
        max-width: 100%;
        display: block;
    }
    .slider-item .box {
        padding: 0 50px 0 40px;
        text-align: left;
        max-width: 50%;
        -webkit-flex: 0 0 50%;
        -ms-flex: 0 0 50%;
        flex: 0 0 50%;
    }
    .slider-item .box .btn {
        margin-left: 0;
    }
    .slider-item .box .title {
        text-align: left;
        font-size: 32px;
        margin-bottom: 30px;
    }
}

@media (min-width: 1280px) {
    .slider-item {
        -webkit-flex-wrap: nowrap;
        -ms-flex-wrap: nowrap;
        flex-wrap: nowrap;
        padding-left: 0;
    }
    .slider-item .box {
        -webkit-flex: auto;
        -ms-flex: auto;
        flex: auto;
        max-width: 380px;
        padding-right: 0;
    }
}

.faq-title {
    font-size: 32px;
    margin-bottom: 36px;
    line-height: 1.1;
    font-weight: 500;
    text-transform: uppercase;
}

.faq-section {
    padding: 4.70588rem 0 5.88235rem;
}

.faq-section .btn {
    margin: 35px auto 0;
    width: 145px;
    min-width: 140px;
    display: block;
}

@media (min-width: 767px) {
    .faq-section {
        padding: 5.29412rem 0;
    }
}

@media (min-width: 1279px) {
    .faq-section {
        padding: 7.05882rem 0;
    }
}

.faq-section .wrap {
    overflow: hidden;
}

.faq-item {
    border-bottom: 1px solid #252530;
}

.faq-item_title {
    padding: 32px 40px 32px 0;
    font-size: 22px;
    line-height: 1.1;
    position: relative;
    cursor: pointer;
}

.faq-item_title.active .marker::after {
    display: none;
}

.faq-item_title .marker {
    position: absolute;
    top: 50%;
    width: 13px;
    height: 13px;
    -webkit-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
    right: 0;
}

.faq-item_title .marker::after {
    content: "";
    width: 1px;
    height: 13px;
    background: #000000;
    position: absolute;
    left: 50%;
    top: 50%;
    -webkit-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}

.faq-item_title .marker::before {
    content: "";
    width: 13px;
    height: 1px;
    background: #000000;
    position: absolute;
    left: 50%;
    top: 50%;
    -webkit-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}

.faq-item_title div {
    max-width: 700px;
}

.faq-item:first-child {
    border-top: 1px solid #252530;
}
.more{
    overflow: hidden;
}
.more .faq-item:first-child{
    border-top: none;
}

.faq-desk {
    display: none;
    padding-bottom: 30px;
}
.preview-section {
    min-height: 700px;
    height: 100%;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    background: linear-gradient(97.21deg, #FCFFF0 2.52%, #F6FBFB 26.82%, #F0F3FA 64.34%, #F4E5D8 101.78%);
}

.preview-section .container {
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-flex-direction: column;
    -ms-flex-direction: column;
    flex-direction: column;
    width: 100%;
    -webkit-justify-content: center;
    -ms-flex-pack: center;
    justify-content: center;
}

.preview-section_bg {
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    width: 100%;
    background-image: url(img/preview-right-img.png), url(img/preview-left-img.png);
    background-position: 113% bottom, -13% top;
    background-repeat: no-repeat, no-repeat;
}

@media (max-width: 1279px) {
    .preview-section_bg {
        background-position: 130% bottom, -30% top;
    }
}

@media (max-width: 1160px) {
    .preview-section_bg {
        background-position: 155% bottom, -55% top;
    }
}

@media (max-width: 960px) {
    .preview-section_bg {
        background-position: 165% bottom, -65% top;
    }
}

@media (max-width: 900px) {
    .preview-section_bg {
        background-image: url(img/preview-left-img-m.png), url(img/preview-right-img-m.png);
        background-position: 30% top, center 112%;
    }
}

@media (max-width: 900px) {
    .preview-section {
        min-height: 870px;
    }
}

.preview-content {
    max-width: 390px;
    margin: 0 auto;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-flex-direction: column;
    -ms-flex-direction: column;
    flex-direction: column;
}

.preview-content .title {
    font-size: 2.35294rem;
    text-align: center;
    font-weight: 500;
    line-height: 1.1;
    margin-bottom: 40px;
}

@media (max-width: 900px) {
    .preview-content {
        margin-top: -10%;
    }
}

.footer {
    padding: 14px 0;
    background: #252530;
    color: #fff;
}

@media (max-width: 767px) {
    .footer {
        padding: 26px 0;
    }
}

.footer .row {
    width: 100%;
    -webkit-justify-content: space-between;
    -ms-flex-pack: justify;
    justify-content: space-between;
}

@media (max-width: 800px) {
    .footer .row {
        -webkit-flex-direction: column;
        -ms-flex-direction: column;
        flex-direction: column;
    }
}

.footer .copy {
    font-size: 15px;
}

.footer-nav ul {
    font-size: 15px;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
}

.footer-nav li + li {
    margin: 0 0 0 40px;
}

@media (max-width: 800px) {
    .footer-nav li + li {
        margin: 18px 0 0 !important;
    }
    .footer-nav ul {
        flex-direction: column;
        align-items: flex-start;
    }
}

.footer-nav li {
    position: relative;s
    padding-right: 20px;
}

@media (max-width: 800px) {
    .footer-nav li {
        margin: 18px 0 0 !important;
    }
}

.footer-nav a {
    transition: opacity .24s ease-in;
    color: #fff;
    font-weight: 500;
    position: relative;
}

.footer-nav a:hover {
    opacity: 0.65;
}

.footer-nav a::before {
    content: "";
    background-image: url("data:image/svg+xml,%0A%3Csvg width='9' height='10' viewBox='0 0 9 10' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath fill-rule='evenodd' clip-rule='evenodd' d='M9.00052 0.5H0.500071V1.68294H7.03086L0.294922 8.36947L1.1283 9.209L7.81745 2.56892V9.00049H9.00039L9.00052 1.68294V0.5Z' fill='%23ffffff'/%3E%3C/svg%3E%0A");
    width: 9px;
    height: 10px;
    position: absolute;
    left: 108%;
    top: 50%;
    -webkit-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
}

.article-banner {
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    margin-bottom: 6rem;
    background: linear-gradient(97.21deg, #FCFFF0 2.52%, #F6FBFB 26.82%, #F0F3FA 64.34%, #F4E5D8 101.78%);
    min-height: 350px;
    padding-top: 50px;
}

.article-banner .sub-title {
    font-size: 17px;
}

.article-banner .container {
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-flex-direction: column;
    -ms-flex-direction: column;
    flex-direction: column;
    -webkit-justify-content: center;
    -ms-flex-pack: center;
    justify-content: center;
}

@media (max-width: 767px) {
    .article-banner {
        min-height: 270px;
    }
    .article-banner .sub-title {
        margin-top: -25px;
        margin-bottom: 34px;
    }
    .article-banner h1 {
        margin-bottom: 50px;
        margin-top: auto;
    }
}

.content-scroll{
    margin-bottom: 110px;
}
.sidebar {
    -webkit-flex: 0 0 33%;
    -ms-flex: 0 0 33%;
    flex: 0 0 33%;
    max-width: 380px;
    padding-right: 40px;
}

@media (max-width: 767px) {
    .content-scroll{
        margin-bottom: 60px;
    }
    .sidebar {
        display: none;
    }
}

.sidebar li a {
    font-size: 22px;
    font-weight: 400;
    color: #A7A7A7;
    padding-right: 25px;
    line-height: 1.1;
}

.sidebar li a.active {
    position: relative;
    font-weight: 500;
    display: table;
    color: #252530;
}

.sidebar li a.active::after {
    content: "";
    background-image: url("data:image/svg+xml,%0A%3Csvg width='16' height='16' viewBox='0 0 16 16' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Crect x='7.75' y='1.44678' width='9' height='0.219512' transform='rotate(45 7.75 1.44678)' fill='%23363636' stroke='%23363636' stroke-width='1.5'/%3E%3Crect x='7.59399' y='14.0193' width='9' height='0.219512' transform='rotate(-45 7.59399 14.0193)' fill='%23363636' stroke='%23363636' stroke-width='1.5'/%3E%3Crect x='1.49658' y='7.70361' width='12.4008' height='0.219512' transform='rotate(0.210924 1.49658 7.70361)' fill='%23363636' stroke='%23363636' stroke-width='1.5'/%3E%3C/svg%3E%0A");
    width: 16px;
    height: 16px;
    position: absolute;
    right: 0;
    top: 50%;
    -webkit-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
}

.sidebar li + li {
    margin-top: 25px;
}


.article-content {
    margin-bottom: 60px;
}
.article-content-sidebar {
    -webkit-flex: 0 0 67%;
    -ms-flex: 0 0 67%;
    flex: 0 0 67%;
    max-width: 67%;
    margin-bottom: 0;
    margin-left: auto;
}
@media (max-width: 767px) {
    .article-content-sidebar {
        -webkit-flex: 0 0 100%;
        -ms-flex: 0 0 100%;
        flex: 0 0 100%;
        max-width: 100%;
        padding-top: 0;
    }
}


.article-content .equation {
    position: relative;
    margin-bottom: 40px;
    padding-right: 40px;
}

.article-content .equation .num {
    position: absolute;
    top: 50%;
    -webkit-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
    right: 0;
    font-style: italic;
    font-weight: 500;
    font-size: 22px;
    text-align: right;
    color: #252530;
    opacity: 0.6;
}

@media (max-width: 767px) {
    .article-content .equation {
        padding-right: 0;
    }
    .article-content .equation .num {
        display: block;
        margin-top: 10px;
        text-align: center;
        -webkit-transform: none;
        -ms-transform: none;
        transform: none;
        position: static;
    }
}

.article-content .equation img {
    margin-bottom: 0;
    box-shadow: none;
}

.article-content img {
    box-shadow: 0 6px 12px -6px rgba(24, 39, 75, 0.12), 0 8px 24px -4px rgba(24, 39, 75, 0.08);
    background-color: #fff;
    margin-bottom: 40px;
}

.article-content b, .article-content strong {
    font-weight: 600;
}

.article-content a {
    color: #252530;
    text-decoration: underline;
}

.article-content a:hover {
    text-decoration: none;
}

.article-content p {
    margin-bottom: 32px;
}

.article-content p strong {
    font-weight: 600;
}

.article-content h2 {
    margin-bottom: 15px;
    font-size: 22px;
    font-weight: 500;
}

.article-content h3 {
    margin-bottom: 8px;
    font-size: 17px;
    font-weight: 500;
}

.article-content ul li {
    padding-left: 16px;
    position: relative;
    margin-bottom: 22px;
}

.article-content ul li::before {
    content: "";
    width: 5px;
    height: 5px;
    position: absolute;
    top: 10px;
    border-radius: 50%;
    left: 0;
    background: #252530;
}

.article-content ol {
    counter-reset: inst;
}

.article-content ol li {
    padding-left: 27px;
    position: relative;
    counter-increment: inst;
    margin-bottom: 22px;
}

.article-content ol li::before {
    content: counter(inst) ".";
    position: absolute;
    top: -1px;
    font-size: 17px;
    left: 0;
    color: #252530;
}

.header {
    height: 111px;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    padding: 37px 0;
}

.header > .container > .row {
    position: relative;
    -webkit-justify-content: space-between;
    -ms-flex-pack: justify;
    justify-content: space-between;
}

.header .header-logo {
    z-index: 5;
    position: relative;
}

@media (max-width: 767px) {
    .header {
        height: 100px;
        padding: 32px 0;
    }
    .header .header-logo {
        max-width: 135px;
    }
}

.header-nav {
    font-size: 15px;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
}

.header-nav ul {
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
}

.header-nav li + li {
    margin-left: 40px;
}

.header-nav a {
    color: #252530;
    font-weight: 500;
    position: relative;
    transition: opacity .24s ease-in;
}

.header-nav a::before {
    content: "";
    background-image: url("data:image/svg+xml,%0A%3Csvg width='9' height='10' viewBox='0 0 9 10' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath fill-rule='evenodd' clip-rule='evenodd' d='M9.00052 0.5H0.500071V1.68294H7.03086L0.294922 8.36947L1.1283 9.209L7.81745 2.56892V9.00049H9.00039L9.00052 1.68294V0.5Z' fill='%23252530'/%3E%3C/svg%3E%0A");
    width: 9px;
    height: 10px;
    position: absolute;
    left: 105%;
    top: 50%;
    -webkit-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
}

.header-nav a:hover {
    opacity: 0.65;
}

@media (max-width: 767px) {
    .header-nav {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        padding-top: 100px;
        z-index: 4;
        width: 305px;
        background-color: #fff;
        height: 100vh;
        padding: 110px 15px 20px;
    }
    .header-nav ul {
        -webkit-flex-direction: column;
        -ms-flex-direction: column;
        flex-direction: column;
    }
    .header-nav ul li + li {
        margin: 22px 0 0;
    }
    .header-nav.active {
        display: block;
    }
    .header-nav .header-nav-mask {
        position: absolute;
        left: 100%;
        top: 0;
        height: 100vh;
        width: 100vw;
        background: rgba(37, 37, 48, 0.8);
    }
}

@media (max-width: 359px) {
    .header-nav {
        width: 260px;
    }
}

@media (max-width: 767px) {
    .btn-menu {
        position: absolute;
        top: 50%;
        -webkit-transform: translateY(-50%);
        -ms-transform: translateY(-50%);
        transform: translateY(-50%);
        width: 24px;
        height: 17px;
        z-index: 5;
        right: 0;
    }
    .btn-menu i {
        position: absolute;
        top: 50%;
        width: 24px;
        height: 2px;
        right: 0;
        transition: background .25s ease-in;
        background: #222222;
        border-radius: 2px;
    }
    .btn-menu i::before {
        content: "";
        position: absolute;
        top: -8px;
        width: 24px;
        height: 2px;
        right: 0;
        background: #222222;
        border-radius: 2px;
        transition: -webkit-transform .25s ease-in;
        transition: transform .25s ease-in;
        transition: transform .25s ease-in, -webkit-transform .25s ease-in;
    }
    .btn-menu i::after {
        content: "";
        position: absolute;
        top: 8px;
        width: 24px;
        height: 2px;
        right: 0;
        background: #222222;
        border-radius: 2px;
        transition: -webkit-transform .25s ease-in;
        transition: transform .25s ease-in;
        transition: transform .25s ease-in, -webkit-transform .25s ease-in;
    }
    .btn-menu.active i {
        background: none;
    }
    .btn-menu.active i::before {
        -webkit-transform: rotate(45deg);
        -ms-transform: rotate(45deg);
        transform: rotate(45deg);
        top: 50%;
        background: #fff;
    }
    .btn-menu.active i::after {
        -webkit-transform: rotate(-45deg);
        -ms-transform: rotate(-45deg);
        transform: rotate(-45deg);
        top: 50%;
        background: #fff;
    }
}