/* reset styles */
header,
footer,
main,
section {
    display: block;
}

* {
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
}

*:before,
*:after {
    display: block;
    position: absolute;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
}

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

body,
h1,
h2,
h3,
h4,
p,
ul[class],
ol[class],
li,
figure,
figcaption,
blockquote,
dl,
dd {
    margin: 0;
}

html {
    line-height: 1;
    -webkit-text-size-adjust: 100%;
}

body {
    line-height: 1;
    min-width: 320px;
}

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

a {
    cursor: pointer;
    outline: 0;
    text-decoration: none;
}

button {
    cursor: pointer;
    padding: 0;
    outline: 0;
    border: 0;
    background-color: rgba(255, 255, 255, 0);
}

input:focus,
textarea:focus {
    outline-offset: 0;
    outline: none;
}

input::-ms-clear {
    display: none;
    width: 0;
    height: 0;
}

input::-ms-reveal {
    display: none;
    width: 0;
    height: 0;
}

input::-webkit-search-decoration,
input::-webkit-search-cancel-button,
input::-webkit-search-results-button,
input::-webkit-search-results-decoration {
    display: none;
}

/* main */

html {
    scroll-padding-top: 108px;
    scroll-behavior: smooth;
}

body {
    color: #212121;
    font-family: 'Nagel VF', 'Roboto', sans-serif;
    background-color: #FFF;
}

.boost-container {
    margin: 0 auto;
    max-width: 1248px;
    padding: 0 24px;
}

.boost-container.wide {
    max-width: 100%;
}

.bg-red {
    background-color: #E91641;
}

.bg-black {
    background-color: #212121;
}

.bg-blue {
    background-color: #4296F0;
}

.bg-violet {
    background-color: #6977F5;
}

.m-button {
    display: -webkit-inline-box;
    display: -ms-inline-flexbox;
    display: inline-flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    font-weight: normal;
    padding: 6px 24px;
    text-align: center;
    font-weight: 500;
    border-width: 1px;
    min-height: 44px;
    -webkit-transition: all .3s;
    -o-transition: all .3s;
    transition: all .3s;
    font-size: 14px;
    line-height: 20px; 
    letter-spacing: 2px;
    text-transform: uppercase;
    font-family: 'Nagel VF', 'Roboto', sans-serif;
}

.m-button.red {
    background-color: #E91641;
    color: #FFFFFF;
}

.m-button.red:hover {
    background-color: #DA113A;
}

.m-button.white {
    color: #212121;
    background-color: #FFFFFF;
}

.m-button.with-icon {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    gap: 12px;
}

.m-button.border {
    background-color: transparent;
    color: #FFF;
    border: 1px solid #ADAFC1;
}

/* titles header */

.section-header {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    gap: 20px;
    -webkit-box-align: start;
    -ms-flex-align: start;
    align-items: flex-start;
}

.section-descr {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    gap: 8px;
    -webkit-box-align: baseline;
    -ms-flex-align: baseline;
    align-items: baseline;
    font-size: 14px;
    font-weight: 500;
    line-height: 20px;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-top: 15px;
    max-width: 160px;
    min-width: 160px;
}

.section-descr.first {
    align-items: center;
}

.section-header-title {
    font-size: 60px;
    font-weight: 400;
    line-height: 66px;
}

/* main menu */

.boost-header {
    top: 40px;
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    background-color: rgba(33, 33, 33, 0.70);
    border-radius: 16px;
    left: 50%;
    -webkit-transform: translate(-50%);
    -ms-transform: translate(-50%);
    transform: translate(-50%);
    position: fixed;
    padding: 0 40px;
    max-width: 1268px;
    min-width: 1268px;
    z-index: 10;
    -webkit-transition: all .3s;
    -o-transition: all .3s;
    transition: all .3s;
}

.boost-header .h-logo-wrapper {
    padding: 20px 0 26px;
    display: block;
}

.boost-header.scrolled {
    top: 16px;
}

.boost-header .boost-header-wrapper {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;
}

.boost-header .icon-conf {
    display: block;
}

.boost-header .header-links-list {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    padding: 18px 0 0 0;
    height: 100%;
    min-height: 88px;
}

.boost-header .header-link {
    padding: 16px 16px 18px 16px;
    font-size: 14px;
    font-weight: 500;
    line-height: 20px;
    letter-spacing: 2px;
    text-transform: uppercase;
    -webkit-transition: all .3s;
    -o-transition: all .3s;
    transition: all .3s;
    color: #FFF;
    position: relative;
}

.boost-header .header-link:hover {
    background: rgba(33, 33, 33, 0.70);
}

.boost-header .header-link.active {
    background: #E91641;
}

.boost-header .boost-header-wrapper .header-link svg {
    opacity: 0;
    -webkit-transition: all .3s;
    -o-transition: all .3s;
    transition: all .3s;
    display: block;
    position: relative;
    margin-top: 6px;
    left: 50%;
    -webkit-transform: translate(-50%);
    -ms-transform: translate(-50%);
    transform: translate(-50%);
}

.boost-header .boost-header-mobile-wrapper .header-link svg {
    width: 0;
    opacity: 0;
    -webkit-transition: all .3s;
    -o-transition: all .3s;
    transition: all .3s;
    display: block;
    margin-right: 6px;
}

.boost-header .header-link:hover svg,
.boost-header .header-link.active svg {
    opacity: 1;
}

.boost-header .header-burger-mobile {
    display: none;
}

.boost-header .boost-header-mobile-wrapper {
    display: none;
}

/* presentation */

.boost-section-presentation .presentation-textes {
    margin-top: 4px;
    width: 100%;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    -webkit-column-gap: 16px;
    -moz-column-gap: 16px;
    column-gap: 16px;
    row-gap: 12px;
    padding: 16px 40px;
    border-radius: 40px;
}

.boost-section-presentation .presentation-intro {
    display: flex;
    align-items: flex-end;
    gap: 24px;
}

.boost-section-presentation .presentation-intro .intro-is {
    margin-bottom: 10px;
    margin-top: 26px;
}

.boost-section-presentation .intro-hoster-logo-white-and-red {
    width: 183px;
    height: 73px;
}

.boost-section-presentation .presentation-intro img {
    display: block;
}

.boost-section-presentation .presentation-intro .conf-name {
    display: block;
    color: #FFF;
    font-size: 42px;
    font-weight: 400;
    line-height: normal;
    letter-spacing: 1px;
}

.boost-section-presentation .boost-presentation-wrapper {
    background-color: #010101;
    border-radius: 40px;
    margin-top: 24px;
    position: relative;
    overflow: hidden;
}

.boost-section-presentation .presentation-content {
    position: absolute;
    left: 50%;
    top: 50%;
    -webkit-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    color: #FFF;
    max-width: 540px;
    min-width: 540px;
    z-index: 3;
}

.boost-section-presentation .hoster-logo img {
    display: block;
    margin: 0 auto;
}

.boost-section-presentation .presentation-logo img {
    display: block;
    margin: 0 auto;
    margin-top: 24px;
}

.boost-section-presentation .presentation-subtitle {
    margin-top: 24px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    padding: 8px 20px;
    background-color: #FFF;
    font-size: 18px;
    font-style: normal;
    font-weight: 400;
    line-height: normal;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: #212121;
}

.boost-section-presentation .presentation-subtitle svg {
    min-width: 12px;
}

.boost-section-presentation .presentation-description {
    margin-top: 25px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: start;
    -ms-flex-align: start;
    align-items: flex-start;
    color: #FFF;
    font-size: 20px;
    font-weight: 400;
    line-height: normal;
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;
}

.boost-section-presentation .presentation-text-item {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    gap: 16px;
    color: #FFF;
    font-size: 20px;
    font-weight: 400;
    line-height: 36px;
    letter-spacing: 3px;
    text-transform: uppercase;
}

.boost-section-presentation .presentation-video {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    max-width: -webkit-max-content;
    max-width: -moz-max-content;
    max-width: max-content;
    position: relative;
    margin: 0 auto;
}

.boost-section-presentation .presentation-video video {
    max-width: 100%;
    position: relative;
}

.boost-section-presentation .presentation-place,
.boost-section-presentation .presentation-date {
    font-family: 'Montserrat', Helvetica, sans-serif;
    font-size: 16px;
    font-style: normal;
    font-weight: 500;
    line-height: 24px;
}

.boost-section-presentation .presentation-place span,
.boost-section-presentation .presentation-date span {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.boost-section-presentation .presentation-place .first-line,
.boost-section-presentation .presentation-date .first-line {
    font-weight: 700;
}

/* about */

.boost-section-about {
    margin-top: 140px;
}

.boost-section-about .about-tags {
    background-color: #F5F9FE;
    border-radius: 16px;
    padding: 15px;
    width: 24px;
    margin-left: auto;
    max-width: 300px;
    -webkit-transition: all .6s;
    -o-transition: all .6s;
    transition: all .6s;
}

.boost-section-about .about-item-main {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    gap: 32px;
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;
    -webkit-transition: all .6s;
    -o-transition: all .6s;
    transition: all .6s;
    max-width: 972px;
}

.boost-section-about {
    margin-top: 140px;
}

.boost-section-about .about-tags-wrapper {
    height: 100%;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    -webkit-transition: all .6s;
    -o-transition: all .6s;
    transition: all .6s;
    justify-content: space-between;
}

.boost-section-about .about-items-wrapper {
    margin-top: 60px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    gap: 4px;
}

.boost-section-about .about-item {
    display: grid;
    grid-template-columns: minmax(0, 224px) minmax(0, 1fr);
    gap: 4px;
    -webkit-transition: all .6s;
    -o-transition: all .6s;
    transition: all .6s;
}

.boost-section-about .about-tags-list {
    padding: 4px 15px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    flex-direction: row;
    gap: 8px;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    justify-content: flex-start;
    opacity: 0;
}

.boost-section-about .about-tag-item {
    font-size: 14px;
    font-weight: 500;
    line-height: 20px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: #212121;
    white-space: nowrap;
}

.boost-section-about .about-tags-arrows {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    width: 100%;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;
}

.boost-section-about .about-item-main {
    background-color: #F5F9FE;
    border-radius: 16px;
    padding: 32px 0 32px 40px;
}

.boost-section-about .about-item .about-item-arrow {
    min-width: 100px;
    max-width: 100px;
    min-height: 100px;
    max-height: 100px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    background-color: #EBEFF5;
}

.boost-section-about .about-item .about-item-arrow path {
    fill: #9496AE;
}

.boost-section-about .about-item:hover .about-item-arrow path {
    fill: white;
}

.about-item.violet-item:hover .about-item-arrow {
    background-color: #6977F5;
}

.about-item.blue-item:hover .about-item-arrow {
    background-color: #4296F0;
}

.about-item.red-item:hover .about-item-arrow {
    background-color: #E91641;
}

.boost-section-about .about-item-content {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    gap: 16px;
}

.boost-section-about .about-item-title {
    font-size: 30px;
    font-style: normal;
    font-weight: 400;
    line-height: 36px;
    color: #212121;
}

.boost-section-about .about-item-text {
    color: #6A6C91;
    font-size: 16px;
    font-style: normal;
    font-weight: 500;
    line-height: 24px;
    font-family: 'Montserrat', Helvetica, sans-serif;
}

.boost-section-about .mobile-tag-title {
    font-size: 14px;
    font-weight: 500;
    line-height: 20px; 
    letter-spacing: 2px;
    text-transform: uppercase;
}

.boost-section-about .mobile-tags-toggler {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    background-color: #F5F9FE;
    border-radius: 16px;
    padding: 16px;
    position: relative;
    -webkit-transition: all .3s;
    -o-transition: all .3s;
    transition: all .3s;
    cursor: pointer;
}

.boost-section-about .mobile-tags-toggler svg {
    position: absolute;
    right: 15px;
}

.boost-section-about .tags-toggler-name {
    font-size: 14px;
    font-weight: 500;
    line-height: 20px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.boost-section-about .tags-toggler-name.violet {
    color: #6977F5;
}

.boost-section-about .tags-toggler-name.red {
    color: #E91641;
}

.boost-section-about .tags-toggler-name.blue {
    color: #4296F0;
}

/* speakers */

.boost-section-speakers {
    margin-top: 140px;
}

.boost-section-speakers .speakers-list {
    margin-top: 60px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr);
    gap: 60px;
}

.boost-section-speakers .speaker-item {
    border-radius: 16px;
    position: relative;
    overflow: hidden;
}

.boost-section-speakers .speaker-info {
    padding: 6px 12px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    gap: 6px;
    min-height: 120px;
    max-height: 120px;
    max-width: 160px;
    min-width: 160px;
    background-color: #E91641;
    position: absolute;
    bottom: 0;
    left: 50%;
    -webkit-transform: translate(-50%);
    -ms-transform: translate(-50%);
    transform: translate(-50%);
}

.boost-section-speakers .speaker-name {
    font-size: 14px;
    font-weight: 500;
    line-height: 20px;
    letter-spacing: 2px;
    color: #FFF;
    text-transform: uppercase;
}

.boost-section-speakers .speaker-descr {
    font-family: 'Montserrat', Helvetica, sans-serif;
    font-size: 11px;
    font-weight: 500;
    line-height: normal;
    letter-spacing: 1px;
    color: #FFF;
    opacity: 0.7;
}

.boost-section-speakers .speaker-item img {
    display: block;
    width: 100%;
    min-width: 100%;
}

/* foryou */

.boost-section-foryou {
    margin-top: 100px;
}

.boost-section-foryou .boost-section-foryou-wrapper {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: start;
    -ms-flex-align: start;
    align-items: flex-start;
    gap: 40px;
}

.boost-section-foryou .foryou-left {
    font-size: 30px;
    font-weight: 400;
    line-height: 36px; 
}

.boost-section-foryou .foryou-img {
    display: block;
    float: left;
    max-height: 72px;
    max-width: 72px;
    margin-right: 4px;
}

.boost-section-foryou .foryou-tag {
    display: inline-block;
    border-radius: 8px;
    background-color: #212121;
    color: #FFF;
    font-size: 20px;
    font-weight: 400;
    line-height: normal;
    padding: 5px 12px;
    margin-bottom: 4px;
}

/* program */

.boost-section-program {
    margin-top: 140px; 
}

.boost-section-program .program-content-wrapper {
    margin-top: 60px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    gap: 44px;
}

.boost-section-program .program-tech-section {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    gap: 4px;
}

.boost-section-program .program-section-title {
    padding: 16px 24px;
    border-radius: 16px;
    display: -webkit-inline-box;
    display: -ms-inline-flexbox;
    display: inline-flex;
    gap: 16px;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
}

.boost-section-program .program-section-title span {
    font-size: 30px;
    font-weight: 400;
    line-height: 36px;
    color: #FFF;
}

.boost-section-program .program-section-title + .items-wrapper {
    margin-top: 4px;
}

.boost-section-program .items-wrapper {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    gap: 4px;
}

.boost-section-program .program-item {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    gap: 54px;
    padding: 32px 60px 32px 32px;
    border-radius: 16px;
}

.boost-section-program .program-item-time {
    background-color: #2D2D2F;
    color: #FFF;
    padding: 5px 12px;
    border-radius: 8px;
    font-size: 20px;
    font-weight: 400;
    line-height: normal;
    display: block;
    white-space: nowrap;
    min-width: 140px;
    max-width: 140px;
    text-align: center;
}

.boost-section-program .program-item-content {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
}

.boost-section-program .program-item-title {
    color: #FFF;
    font-size: 30px;
    font-weight: 400;
    line-height: 36px;
}

.boost-section-program .program-item-img-wrapper {
    margin-top: 24px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    gap: 12px;
    color: #FFF;
}

.boost-section-program .program-item-img-wrapper img {
    width: 56px;
    height: 56px;
}

.boost-section-program .program-item-img-wrapper p {
    font-size: 14px;
    font-weight: 500;
    line-height: 16px;
    line-height: 20px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.boost-section-program .program-item-img-wrapper p .grey-text {
    font-family: 'Montserrat', Helvetica, sans-serif;
    opacity: 0.7;
    font-size: 11px;
    font-weight: 500;
    line-height: normal;
    letter-spacing: 1px;
    text-transform: none;
}

.boost-section-program .program-item-text {
    margin-top: 16px;
    font-size: 20px;
    font-weight: 400;
    line-height: normal;
    color: #FFF;
}

/* footer */

.footer-black-section {
    margin-top: -40px;
}

.footer-black-section .boost-container.footer {
    width: calc(100% - 48px);
    max-width: calc(100% - 48px);
    margin: 0 24px 24px 24px;
    border-radius: 40px;
    padding: 100px 0 0 0;
}

.footer-black-section .place-block-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 160px 0 8px;
}

.footer-black-section .place-info-item {
    color: #FFF;
}

.footer-black-section .place-info-title {
    font-size: 100px;
    font-weight: 700;
    line-height: normal;
    margin-top: 24px;
}

.footer-black-section .section-descr {
    width: 100%;
    max-width: 100%;
    justify-content: space-between;
}

.footer-black-section .footer-descr-time {
    color: #FFF;
    font-size: 30px;
    font-style: normal;
    font-weight: 400;
    line-height: 36px;
    text-transform: none;
}

.footer-black-section .place-info-address {
    margin-top: 30px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    gap: 8px;
    -webkit-box-align:start;
    -ms-flex-align:start;
    align-items:flex-start;
}

.footer-black-section .address-info-wrapper .m-button {
    margin-top: 50px;
    width: calc(100% - 56px);
    margin-left: auto;

}

.footer-black-section .address-text-first {
    font-size: 30px;
    font-style: normal;
    font-weight: 400;
    line-height: 36px;
}

.footer-black-section .address-text-last {
    font-size: 22px;
    font-style: normal;
    font-weight: 400;
    line-height: 32px;
    margin-top: 12px;
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    gap: 48px;
    background-color: #2D2D2F;
    border-radius: 40px;
    padding: 40px 0 40px 0;
    width: 100%;
}

.footer-black-section .footer-content-wrapper {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    max-width: 1150px;
    width: 100%;
    margin: 0 auto;
}

.footer-black-section .footer-content-wrapper > a {
    display: block;
}

.footer-black-section .footer-socials-list {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    gap: 16px;
}

.footer-black-section .footer-buttons .m-button {
    width: 152px;
    font-family: 'Montserrat', Helvetica, sans-serif;
    text-transform: none;
    letter-spacing: normal;
}

.footer-black-section .place-img-item {
    border-radius: 24px;
}

.footer-black-section .place-img-item img {
    display: block;
    max-width: 100%;
}


.footer-black-section .address-with-icon {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: baseline;
    -ms-flex-align: baseline;
    align-items: baseline;
    gap: 8px;
}

.footer-black-section .address-with-icon svg {
    display: block;
    min-width: 48px;
    min-height: 48px;
}

.footer-black-section .footer-socials-item svg {
    color: #9496AE;
}

.footer-black-section .footer-socials-item:hover svg {
    color: #FFF;
}

.footer-black-section .footer-organizer-section {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    max-width: 1150px;
    width: 100%;
    margin: 0 auto;
}

.footer-black-section .footer-organizer-section p {
    color: #9496AE;
    font-family: 'Montserrat', Helvetica, sans-serif;
    font-size: 14px;
    font-style: normal;
    font-weight: 500;
    line-height: 22px;
}

.footer-black-section .footer-organizer-section span {
    color: #9496AE;
    font-family: 'Nagel VF', 'Roboto', sans-serif;
    font-size: 24px;
    font-style: normal;
    font-weight: 400;
    line-height: normal;
}

/* media */

/* main */

@media (max-width: 1023px) {
    html {
        scroll-padding-top: 98px;
    }

    .boost-container {
        padding: 0 16px;
    }

    body.modal-open-mobile {
        overflow: hidden;
        touch-action: none;
    }
}

/* titles header */

@media (max-width: 1023px) {
    .section-header {
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        -ms-flex-direction: column;
        flex-direction: column;
        gap: 8px;
    }

    .section-descr {
        max-width: 100%;
        min-width: unset;
        font-size: 12px;
        font-weight: 500;
        line-height: normal;
        letter-spacing: 2px;
        margin-top: 0;
    }

    .section-header-title {
        font-size: 32px;
        font-weight: 400;
        line-height: normal;
    }
}

/* main menu */

@media (max-width: 1600px) {
    .boost-header {
        max-width: 1268px;
        min-width: unset;
        width: calc(100% - 64px);
        max-width: 100%;
        top: 32px;
    }

    .boost-header .program-content-wrapper {
        margin-top: 40px;
    }
}

@media ((orientation: landscape) and (max-width: 1023px)) {       
    body.modal-open-mobile .boost-header-mobile-wrapper {
        overflow-y: auto;    
        -webkit-overflow-scrolling: touch;
    }
}

@media (max-width: 1023px) {

    .boost-header {
        top: 16px;
        left: 16px;
        right: 16px;
        border-radius: 36px;
        width: calc(100% - 32px);
        padding: 16px 16px 16px 32px;
        -webkit-transform: none;
        -ms-transform: none;
        transform: none;
    }

    .boost-header .icon-conf {
        max-width: 80px;
    }

    .boost-header .h-logo-wrapper {
        padding: 0;
    }

    .boost-header .header-mobile-links {
        display: none;
    }

    body.modal-open-mobile .header-mobile-links {
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        -webkit-box-flex: 2;
        -ms-flex-positive: 2;
        flex-grow: 2;
    }

    body.modal-open-mobile .boost-header {
        top: 8px;
        bottom: 8px;
        height: calc(100dvh - 16px);
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        -ms-flex-direction: column;
        flex-direction: column;
        padding-bottom: 40px;
    }

    .boost-header .burger-close {
        display: none;
    }

    body.modal-open-mobile .burger-close {
        display: block;
    }

    body.modal-open-mobile .burger-open {
        display: none;
    }

    body.modal-open-mobile .boost-header .boost-header-wrapper {
        -webkit-box-flex: 0;
        -ms-flex: 0 0 auto;
        flex: 0 0 auto; 
    }

    .boost-header .boost-header-wrapper .m-button.white {
        margin-left: auto;
        min-height: 40px;
        font-size: 12px;
        padding: 6px 20px;
    }

    .boost-header .header-links-list {
        display: none;
    }

    body.modal-open-mobile .boost-header-mobile-wrapper {
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        -webkit-box-flex: 1;
        -ms-flex: 1 1 auto;
        flex: 1 1 auto;
    }

    .boost-header .header-burger-mobile {
        display: block;
        margin-left: 12px;
    }

    .boost-header.mobile-open .boost-header-mobile-wrapper {
        margin-top: 60px;
    }

    .boost-header-mobile-wrapper {
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        -ms-flex-direction: column;
        flex-direction: column;
        gap: 16px;
        
    }

    .boost-header .header-mobile-info {
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        -ms-flex-direction: column;
        flex-direction: column;
    }

    .boost-header .header-mobile-links {
        margin-top: 60px;
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        -ms-flex-direction: column;
        flex-direction: column;
        gap: 8px;
    }

    .boost-header .header-mobile-links .header-link {
        font-size: 20px;
        font-weight: 400;
        line-height: normal;
        letter-spacing: 3px;
        text-transform: uppercase;
        padding: 10px 24px 10px 16px;
        background-color: transparent;
        display: -webkit-inline-box;
        display: -ms-inline-flexbox;
        display: inline-flex;
        gap: 10px;
        -webkit-box-align: center;
        -ms-flex-align: center;
        align-items: center;
        color: #FFF;
        -webkit-transition: all .3s;
        -o-transition: all .3s;
        transition: all .3s;
    }

    .boost-header .header-mobile-links .header-link svg {
        width: 0;
        -webkit-transition: all .3s;
        -o-transition: all .3s;
        transition: all .3s;
    }

    .boost-header .header-mobile-links .header-link:hover,
    .boost-header .header-mobile-links .header-link:active,
    .boost-header .header-mobile-links .header-link.active {
        background-color: #E91641;
    }

    .boost-header .header-mobile-links .header-link:hover svg,
    .boost-header .header-mobile-links .header-link:active svg,
    .boost-header .header-mobile-links .header-link.active svg {
        width: 12px;
    }

    .boost-header .header-mobile-text {
        color: #FFF;
    }

    .boost-header .header-mobile-text.date {
        font-family: "Nagel VF";
        font-size: 26px;
        font-style: normal;
        font-weight: 700;
        line-height: normal;
    }

    .boost-header .header-mobile-text.place {
        margin-top: 12px;
        font-size: 18px;
        font-weight: 400;
        line-height: normal;
    }

    .boost-header.mobile-open {
        padding-bottom: 40px;
    }
}

/* presentation */

@media (min-width: 1201px) {
    .boost-section-presentation .presentation-video:before {
        content: '';
        position: absolute;
        left: -100px;
        top: 0;
        bottom: 0;
        background: -webkit-gradient(linear, left top, right top, color-stop(30.29%, #010101), to(rgba(1, 1, 1, 0.00)));
        background: -o-linear-gradient(left, #010101 30.29%, rgba(1, 1, 1, 0.00) 100%);
        background: linear-gradient(90deg, #010101 30.29%, rgba(1, 1, 1, 0.00) 100%);
        width: 346px;
        z-index: 1;
    }

    .boost-section-presentation .presentation-video:after {
        content: '';
        position: absolute;
        right: -100px;
        top: 0;
        bottom: 0;
        background: -webkit-gradient(linear, left top, right top, from(rgba(1, 1, 1, 0.00)), color-stop(69.71%, #010101));
        background: -o-linear-gradient(left, rgba(1, 1, 1, 0.00) 0%, #010101 69.71%);
        background: linear-gradient(90deg, rgba(1, 1, 1, 0.00) 0%, #010101 69.71%);
        width: 346px;
        z-index: 1;
    }
}

@media (max-width: 1600px) {
    .boost-section-presentation .boost-presentation-wrapper {
        margin-top: 16px;
    }
}

@media (max-width: 1023px) {

    .boost-section-presentation .boost-container {
        padding: 0 8px;
    }

    .boost-section-presentation .presentation-content {
        width: 540px;
        max-width: 100%;
        min-width: unset;
        padding: 0 32px;
        padding-top: 90px;
    }

    .boost-section-presentation .presentation-intro {
        gap: 16px;
    }

    .boost-section-presentation .presentation-intro .intro-is {
        margin-top: 16px;
        margin-bottom: 5px;
    }

    .boost-section-presentation .presentation-intro img {
        max-width: 120px;
        height: auto;
    }

    .boost-section-presentation .presentation-video video {
        -o-object-fit: cover;
        object-fit: cover;
        -o-object-position: center;
        object-position: center;
        min-height: 597px;
    }

    .boost-section-presentation .presentation-desription {
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        -ms-flex-direction: column;
        flex-direction: column;
    }

    .boost-section-presentation .presentation-textes {
        border-radius: 30px;
        padding: 16px;
        padding-left: 28px;
        justify-content: flex-start;
        gap: 12px;
    }

    .boost-section-presentation .presentation-subtitle {
        font-size: 13px;
        font-weight: 400;
        line-height: normal;
        letter-spacing: 3px;
        text-transform: uppercase;
        text-align: center;
        margin-top: 26px;
    }

    .boost-section-presentation .presentation-subtitle {
        padding: 10px 11px;
    }

    .boost-section-presentation .presentation-text-item {
        gap: 12px;
        font-size: 13px;
        font-weight: 400;
        line-height: normal;
        letter-spacing: 3px;
    }

    .boost-section-presentation .boost-presentation-wrapper {
        margin-top: 8px;
    }

    .boost-section-presentation .presentation-intro .conf-name {
        font-size: 20px;
        font-weight: 400;
        line-height: normal;
        letter-spacing: 1px;
    }

    .boost-section-presentation .presentation-description {
        margin-top: 24px;
        flex-wrap: wrap;
    }

    .boost-section-presentation .presentation-description .m-button {
        margin: 24px auto 0 auto;
        min-width: 100%;
    }

    .boost-section-presentation .hoster-logo img {
        max-width: 125px;
    }

    .boost-section-presentation .presentation-logo img {
        max-width: 100%;
    }

    .boost-section-presentation .presentation-date svg {
        display: none;
    }

    .boost-section-presentation .presentation-place {
        flex-direction: column;
        align-items: center;
        gap: 4px;
    }

    .boost-section-presentation  .presentation-action {
        min-width: 100%;
        max-width: 100%;
    }
}

/* about */


@media (min-width: 1024px) {

    .boost-section-about .about-item:hover .about-item-main,
    .boost-section-about .about-item:hover .about-tags {
        background-color: #212121;
    }

    .boost-section-about .about-item:hover .about-item-text {
        color: #9496AE;
    }

    .boost-section-about .about-item:hover .about-item-title,
    .boost-section-about .about-item:hover .about-tag-item {
        color: #FFF;
    }


    /* .boost-section-about .mobile-tags-toggler {
        display: none;
    } */

    .boost-section-about .about-item:hover .about-tags {
        width: 100%;
    }

    .boost-section-about .about-item:hover .about-tags-list {
        opacity: 1;
    }

    .boost-section-about .about-item-text {
        max-width: 728px;
    }

    .boost-section-about .about-item:hover {
        grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    }

}

@media (max-width: 1023px) {
    .boost-section-about {
        margin-top: 100px;
    }

    .boost-section-about .about-item {
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        -ms-flex-direction: column;
        flex-direction: column;
        outline: none;
    }

    .boost-section-about .about-item:not(:first-child) {
        margin-top: 24px;
    }

    .boost-section-about .about-tags {
        -webkit-box-ordinal-group: 3;
        -ms-flex-order: 2;
        order: 2;
        opacity: 0;
        height: 0;
        padding: 0;
        width: 100%;
        max-width: 100%;
    }

    .boost-section-about .about-tags.mobile-open {
        opacity: 1;
        height: auto;
        padding: 15px;
    }

    .boost-section-about .about-items-wrapper {
        gap: 0;
        margin-top: 40px;
        margin-left: 180px;
    }

    .boost-section-about .about-item-main {
        padding: 24px 0 24px 24px;
        max-width: 100%;
    }

    .boost-section-about .about-item-content {
        gap: 8px;
    }
    .boost-section-about .about-tags-wrapper {
        height: 0;
    }
    
    .boost-section-about .about-tags.mobile-open .about-tags-wrapper {
        height: auto;
    }

    .boost-section-about .about-item-arrow svg {
        max-width: 60px;
        max-height: 60px;
    }

    .boost-section-about .about-item .about-item-arrow path {
        fill: white;
    }

    .boost-section-about .about-item.violet-item .about-item-arrow {
        background-color: #6977F5;
    }

    .boost-section-about .about-item.blue-item .about-item-arrow {
        background-color: #4296F0;
    }

    .boost-section-about .about-item.red-item .about-item-arrow {
        background-color: #E91641;
    }

    .boost-section-about .about-item .about-item-arrow {
        min-width: 60px;
        max-width: 60px;
        min-height: 60px;
        max-height: 60px;
    }

    .boost-section-about .about-item-arrow svg {
        max-width: 32px;
        max-height: 32px;
    }

    .boost-section-about .about-item {
        grid-template-columns: minmax(0, 1fr);
    }

    .boost-section-about .mobile-tags-toggler.mobile-close {
        height: 0;
        display: none;
    }

    .boost-section-about .about-tags.mobile-open .about-tags-list {
        opacity: 1;
    }
}

@media (max-width: 1023px) {
    .boost-section-about {
        margin-top: 60px;
    }

    .boost-section-about .about-items-wrapper {
        margin-top: 24px;
        margin-left: 0;
    }

    .boost-section-about .about-item-title {
        font-size: 24px;
        font-weight: 400;
        line-height: normal;
    }

    .boost-section-about .about-item-text {
        font-size: 16px;
        font-weight: 500;
        line-height: 22px
    }
}

/* speakers */

@media (max-width: 1600px) {
    .boost-section-speakers {
        margin-top: 100px;
    }

    .boost-section-speakers .speakers-list {
        margin-top: 40px;
    }
}

@media (max-width: 1023px) {
    .boost-section-speakers {
        margin-top: 60px;
    }

    .boost-section-speakers .speakers-list {
        margin-top: 24px;
        gap: 24px;
    }

    .boost-section-speakers .speaker-info {
        min-height: 110px;
        max-height: 110px;
        min-width: unset;
        left: 12px;
        right: 12px;
        -webkit-transform: none;
        -ms-transform: none;
        transform: none;
    }

    .boost-section-speakers .speaker-name {
        font-size: 12px;
        font-weight: 500;
        line-height: normal;
    }

    .boost-section-speakers .speaker-descr {
        font-size: 9px;
        font-weight: 500;
        line-height: normal;
    }
}

@media (max-width: 1199px) {
    .boost-section-speakers .speakers-list {
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr);
    }
}

@media (max-width: 1023px) {
    .boost-section-speakers .speakers-list {
        gap: 24px;
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr);
    }
}

@media (max-width: 895px) {
    .boost-section-speakers .speakers-list {
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr);
    }
}

@media (max-width: 711px) {
    .boost-section-speakers .speakers-list {
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr);
    }
}

@media (max-width: 527px) {
    .boost-section-speakers .speakers-list {
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    }
}

/* foryou */

@media (max-width: 1600px) { 
    .boost-section-foryou {
        margin-top: 60px;
    }
}

@media (max-width: 1023px) { 
    .boost-section-foryou {
        margin-top: 40px;
    }

    .boost-section-foryou .foryou-left {
        font-size: 24px;
        font-style: normal;
        font-weight: 400;
        line-height: normal;
    }

    .boost-section-foryou .boost-section-foryou-wrapper {
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        -ms-flex-direction: column;
        flex-direction: column;
        gap: 24px;
    }

    .boost-section-foryou .foryou-tag {
        font-family: 'Montserrat', Helvetica, sans-serif;
        font-size: 14px;
        font-style: normal;
        font-weight: 500;
        line-height: 22px;
        padding: 4px 12px; 
    }

    .boost-section-foryou .foryou-img { 
        max-height: 64px;
        max-width: 64px;
    }
}

/* program */


@media (max-width: 1600px) {
    .boost-section-program {
        margin-top: 100px;
    }
}

@media (max-width: 1023px) {
    .boost-section-program {
        margin-top: 60px;
    }

    .boost-section-program .program-item {
        padding: 24px;
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        -ms-flex-direction: column;
        flex-direction: column;
        gap: 16px;
    }

    .boost-section-program .program-item-time {
        display: -webkit-inline-box;
        display: -ms-inline-flexbox;
        display: inline-flex;
        font-family: 'Montserrat', Helvetica, sans-serif;
        font-size: 14px;
        font-style: normal;
        font-weight: 500;
        line-height: 22px;
        max-width: 107px;
        min-width: 107px;
        justify-content: center;
    }

    .boost-section-program .program-content-wrapper {
        margin-top: 24px;
        gap: 24px;
    }
    
    .boost-section-program .program-item-title {
        font-size: 24px;
        font-style: normal;
        font-weight: 400;
        line-height: normal;
    }

    .boost-section-program .program-item-img-wrapper {
        margin-top: 16px;
    }

    .boost-section-program .program-section-title span {
        font-family: 'Montserrat', Helvetica, sans-serif;
        font-size: 14px;
        font-style: normal;
        font-weight: 500;
        line-height: 22px;
    }

    .boost-section-program .program-section-title img {
        max-width: 24px;
        max-height: 24px;
    }

    .boost-section-program .program-item-img-wrapper p {
        font-size: 12px;
        font-weight: 500;
        line-height: normal;
    }

    .boost-section-program .program-item-img-wrapper p .grey-text {
        font-size: 9px;
        font-weight: 500;
        line-height: normal;
        display: block;
        margin-top: 8px;
    }
}

/* footer */


@media (max-width: 1600px) {
    .footer-black-section .boost-container.footer {
        margin-bottom: 20px;
        padding: 100px 0 0 0;
    }

    .footer-black-section .footer-content-wrapper, .footer-black-section .footer-organizer-section { 
        max-width: 80%;
        min-width: 80%;
    }

    .footer-black-section .place-block-wrapper {
        padding: 0;
        grid-template-columns: minmax(0, 1fr);
        margin-bottom: 60px;
    }


    .footer-black-section .place-info-title {
        font-size: 80px;
        font-weight: 700;
        margin-top: 20px;
    }

    .footer-black-section .place-img-item img {
        max-height: 477px;
    }

    .footer-black-section .address-text-last { 
        margin-top: 10px;
    }

    .footer-black-section .address-info-wrapper .m-button {
        margin-top: 32px;
    }
}

@media (min-width: 1601px) {
    .footer-black-section .address-info-wrapper {
        width: 100%;
    }

    .footer-black-section .address-info-wrapper .m-button {
        font-size: 16px;
        min-height: 64px;
    }
}

@media (max-width: 1600px) and (min-width: 1024px)  {
    .footer-black-section .address-info-wrapper .m-button {
        display: -webkit-inline-box;
        display: -ms-inline-flexbox;
        display: inline-flex;
        width: auto;
        margin-left: 56px;
    }
}



@media (max-width: 1023px) {
    .footer-black-section .boost-container.footer {
        margin: 0;
        width: 100%;
        max-width: 100%;
        border-radius: 40px 40px 0 0;
        padding-top: 140px;
    }

    .footer-black-section .footer-content-wrapper { 
        -ms-flex-wrap: wrap;
        flex-wrap: wrap;
        max-width: 320px;
        min-width: unset;
    }

    .footer-black-section .footer-organizer-section {
        max-width: 320px;
        min-width: unset;
    }

    .footer-black-section .footer-organizer-section p {
        font-size: 12px;
    }

    .footer-black-section .footer-descr-time {
        font-size: 24px;
        font-weight: 400;
        line-height: normal;
    }

    .footer-bottom {
        border-radius: 30px 30px 0 0;
        padding: 32px;
    }

    .footer-black-section .footer-content-wrapper img { 
        max-width: 80px;
    }

    .footer-black-section .place-info-text-wrapper {
        display: block;
    }

    .footer-black-section .footer-socials-list {
        -webkit-box-ordinal-group: 4;
        -ms-flex-order: 3;
        order: 3;
        -webkit-box-pack: center;
        -ms-flex-pack: center;
        justify-content: center;
        width: 100%;
        margin-top: 32px;
    }
    
    .footer-black-section .place-block-wrapper {
        padding: 0 16px 80px 16px;
        gap: 0;
    }

    .footer-black-section .place-img-item {
        display: none;
    }

    .footer-black-section .place-info-title {
        font-size: 60px;
        font-weight: 700;
        line-height: normal;
        margin-top: 8px;
    }

    .footer-black-section .place-info-address {
        margin-top: 30px;
    }

    .footer-black-section .place-img-item img {
        max-height: 440px;
    }

    .footer-black-section .address-text-first {
        font-size: 24px;
        font-weight: 400;
        line-height: normal;
    }

    .footer-black-section .address-text-last {
        font-size: 18px;
        font-weight: 400;
        line-height: normal;
    }

    .footer-black-section .address-info-wrapper {
        max-width: 100%;
        width: 100%;
    }

    .footer-black-section .address-info-wrapper .m-button {
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        width: 100%;
    }

    .footer-black-section .address-with-icon svg {
        display: block;
        min-width: 40px;
        min-height: 40px;
        max-width: 40px;
        max-height: 40px;
    }
}

@media (min-width: 1024px) {
    .boost-section-about .mobile-tags-toggler {
        display: none;
    }
}