:root {
    --white: #fff;
    --black: #000;
    --primary: #E3051A;
    --grey-bg: #151515;

    --light-text: #000;
}
html {
    min-height: 100%;
    background-color: inherit;
    box-sizing: border-box;
}
body {
    color: var(--white);
    overflow-x: hidden;
    background: var(--grey-bg);
    font-size: 16px;
    font-family: 'sf-400';
    box-sizing: border-box;
}
body.preload-lock {
    overflow: hidden;
}
body.light {
    color: var(--light-text);
    background: var(--white);
}
a {
    text-decoration: none;
}
a:hover {
    color: var(--primary);
}
.container {
    max-width: 1640px;
    padding: 0 20px;
    margin: 0 auto;
}

/* Прелоадер начало */ 
#preloader {
    position: fixed;
    width: 100%;
    height: 100%;
    background: black;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    z-index: 9999;
    top: 0;
    left: 0;
    text-align: center;
}
.progress-bar {
    width: 0;
    height: 2px;
    background: red;
    transition: width 0.3s ease;
}
.progress-text {
    margin-top: 20px;
    font-size: 24px;
    transition: opacity 0.5s ease;
}
.main-logo-preloader {
    max-width: 800px;
    width: 100%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 1s ease;
}
/* Прелоадер конец */ 


/* Шапка начало */ 
.header {
    padding: 20px 40px;
    position: fixed;
    top: 50px;
    left: 0;
    right: 0;
    z-index: 99999;
    transition: .5s;
}
.header.headerhide {
    top: -130px;
}
.header.headershow {
    top: 0;
    background-color: rgba(140, 140, 140, 0.1);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.main-logo {
    user-select: none;
}
.menu,
.menu-list,
.menu-list-item {
    display: flex;
    align-items: center;
    justify-content: center;
}
.menu.menu-dark {
    color: #000;
}
.menu-list {
    margin-right: 120px;
}
.frwd {
    padding: 10px;
    user-select: none;
}
.menu-list-item {
    cursor: pointer;
    padding: 20px 10px;
    transition: .2s;
}
.menu-list-item:hover a {
    color: red;
}
.menu-list-item div {
    margin-right: 16px;
}
.menu-lang-item {
    display: none;
    transition: .2s;
}
.menu-lang-item:hover {
    color: red;
}
.menu-lang-item.active-lang {
    display: flex;
    cursor: pointer;
}
.menu-circle {
    width: 14px;
    height: 14px;
    border: 1px solid var(--white);
    border-radius: 50%;
    transition: .2s;
}
.menu-active {
    width: 18px;
    height: 18px;
    background: var(--primary);
    border: 4px solid var(--white);
}
.menu-list-item:hover .menu-circle{
    background: var(--white);
}
.menu.menu-dark .menu-circle {
    border: 1px solid var(--black);
}
.menu.menu-dark .menu-list-item:hover .menu-circle {
    border: 4px solid #D9D9D9;
}
.menu.menu-dark .menu-list-item:hover .menu-circle {
    background: #D9D9D9;
}
.menu.menu-dark .menu-active {
    border: 4px solid #D9D9D9;
}
/* Шапка конец */ 

/* Сертификация начало */ 
.sert-text-container {
    max-width: 1320px;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding: 200px 0 120px 0;
    margin: 0 auto;
}
.sert {
    margin-top: 105px;
    margin-bottom: 390px;
    z-index: 1;
}
.sert-title h2 {
    font-size: 120px;
    font-family: 'ns-400-italic';
}
.sert-text {
    max-width: 450px;
    width: 100%;
    margin-bottom: 30px;
}
.gl_marquee_slider-container {
    --quantity: 8; 
    width: 100%;
    height: 150px;
    display: flex;
    white-space: nowrap;
    overflow: hidden;
    mask-image: linear-gradient(
        to right,
        transparent,
        #000 10% 90%,
        transparent
    );
}
.gl_marquee_slider-list {
    width: 100%;
    display: flex;
    align-items: center;
    min-width: calc(220px * var(--quantity));
    animation: gl_marquee_slider-animation 10s linear infinite;
}
.gl_marquee_slider-item {
    height: 150px;
    margin: 0 30px;
}
.gl_marquee_slider-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    user-select: none;
}
@keyframes gl_marquee_slider-animation {
    from {
        transform: translateX(0);
    } to {
        transform: translateX(-100%);
    }
}
/* Сертификация конец */


/* Оставить заявку начало */
.feedback {
    padding: 240px 0;
    background: #E3051A;
    position: relative;
    z-index: 99;
}
.feedback-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.feedback-form {
    max-width: 962px;
    width: 100%;
    padding-left: 160px;
}
.feedback-title {
    color: #000;
    font-size: 55px;
    margin-bottom: 36px;
}
.feedback-text {
    color: #000;
    font-size: 22px;
    margin-bottom: 50px;
}
.feedback-btn {
    color: #FFF;
    background: var(--black);
    text-align: center;
    font-size: 22px;
    padding: 25px 50px;
    margin-top: 10px;
    margin-bottom: 50px;
    display: block;
    text-transform: uppercase;
    cursor: pointer;
}
.input-row {
    display: grid;
    grid-template-columns: auto auto;
    grid-column-gap: 10px;
    margin-bottom: 10px;
}
.input {
    width: 100%;
    color: #000;
    font-size: 22px;
    padding: 25px 18px;
    border: 0.5px solid rgba(0, 0, 0, 0.50);
}
.term {
    color: #000;
    font-size: 15px;
    line-height: 160%;
}
.term-container {
    color: var(--black);
    display: block;
    position: relative;
    padding-left: 50px;
    margin-bottom: 12px;
    cursor: pointer;
    font-size: 15px;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}
.term-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}
.checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 36px;
    width: 36px;
    background-color: var(--primary);
    border: 1px solid var(--black);
    transition: .2s;
}
.term-container:hover input ~ .checkmark {
    background-color: #c10012;
    transition: .2s;
}
.term-container input:checked ~ .checkmark {
    background-color: var(--black);
}
.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}
.term-container input:checked ~ .checkmark:after {
    display: block;
}
.term-container .checkmark:after {
    left: 11px;
    top: 6px;
    width: 10px;
    height: 15px;
    border: solid white;
    border-width: 0 3px 3px 0;
    -webkit-transform: rotate(45deg);
    -ms-transform: rotate(45deg);
    transform: rotate(45deg);
}
/* Оставить заявку конец */


/* Футер начало */
.footer {
    color: #fff;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    height: 100vh;
    background: var(--black);
    padding: 60px 160px;
    position: relative;
    z-index: 999;
}
.footer-inner {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.footer-form-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.footer-menu-container {
    padding-top: 40px;
    font-size: 18px;
}
.footer-form {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    max-width: 730px;
    width: 100%;
}
.footer-logo {
    max-width: 680px;
    max-height: 510px;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}
.footer-logo video {
    width: 700px;
    height: 700px;
}

.footer-menu {
    font-size: 18px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.footer-menu-item {
    color: #000;
    border-bottom: 1px solid #000;
    font-weight: 700;
}
.footer-menu-item:hover {
    color: #922828;
    border-bottom: 1px solid #922828;
}
.footer-feedback-btn {
    width: 100%;
    padding: 18px 0;
    background: #000;
    margin: 20px 0;
    text-align: center;
    font-size: 24px;
    border: 1px solid #151515;
    cursor: pointer;
}
.footer-line {
    width: 100%;
    height: 1px;
    background: #787878;
    margin: 0 50px 10px 50px;
}
.footer-copy-container {
    color: #787878;
    font-size: 16px;
    display: flex;
    justify-content: space-between;
    align-items: self-end;
    transition: .2s;
}
.footer-copy {
    width: 600px;
}
.footer-copy-container a {
    color: #787878;
}

.footer-copy-container a:hover {
    color: var(--primary);
}
.up {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    position: relative;
    cursor: pointer;
    transition: .2s;
}
.up:hover {
    color: var(--primary);
}
/* Футер конец */


/* Анимация мышки на страницах продукций начало */
#mouse_body {
    width: 23px;
    height: 43px;
    margin: 0 auto;
    position: absolute;
    bottom: 40px;
    left: 0;
    right: 0;
    border-style: solid;
    border-width: 2px;
    border-color: #fff;
    border-radius: 32px;
}
  
#mouse_wheel {
    border-style: solid;
    border-width: 2px;
    border-color: #fff;
    border-radius: 8px;
    background-color: #fff;
    position: relative; 
    height: 3px;
    width: 3px;
    margin: 0 auto; 
    animation: wheel_animation 1.5s linear infinite;
}

#mouse_body.mouse_body-black {
    border-color: #000;
}
#mouse_wheel.mouse_wheel-black {
    border-color: #000;
    background-color: #000;
}
  
@keyframes wheel_animation { 
    0% {
        opacity: 0;
        top: 2px;
    }
    50% {
        opacity: 1;
        top: 50%;
    }
    100% {
        opacity: 0;
        top: 33px;
    }
}

.item-category {
    color: var(--white);
    font-family: 'ns-400-italic';
    font-size: 24px;
}

/* Анимация мышки на страницах продукций конец */


/* Слоган начало */
.slogan {
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    background: #000;
    z-index: 1;
}
.gl_slogan-container {
    max-width: 880px;
    width: 100%;
    position: absolute;
}
.gl_slogan-container h2 {
    font-size: 120px;
    font-family: 'ns-400-italic';
    line-height: 1;
}
.gl_slogan-subheading {
    text-align: end;
}
.gl_slogan-subheading span {
    font-size: 40px;
}
.gl_slogan-footer {
    max-width: 770px;
    width: 100%;
}
.gl_slogan-footer h2 {
    font-size: 100px;
    font-family: 'ns-400-italic';
    line-height: 1;
}
/* Слоган конец */




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

.swiper-wrapper {
    display: flex;
}

.swiper-slide {
    width: auto;
    display: flex;
    justify-content: center;
    align-items: center;
}

.swiper-pagination {
    bottom: 0;
}
.swiper-pagination-bullet {
    width: 18px;
    height: 18px;
    line-height: 18px;
    font-size: 14px;
    background-color: transparent;
    border: 4px solid #fff;
}
.swiper-pagination-bullet-active {
    background-color: var(--primary);
}

/*
 * this styles used on home and products page
 */

.hero {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}
.hero-vid-title {
    max-width: 500px;
    width: 100%;
    padding-bottom: 34px;
}
.hero-vid-subtitle {
    max-width: 480px;
    width: 100%;
    padding-bottom: 34px;
    font-size: 18px;
    font-family: 'sf-200';
    line-height: 130%;
}
.hero-vid-category {
    transition: .2s;
}
.item-category {
    color: var(--white);
    font-family: 'ns-400-italic';
    font-size: 24px;
    max-width: 500px;
    width: 100%;
}
.video-swiper-inner {
    height: 100%;
    padding: 20px;
}
.videoSwiper {
    width: 100%;
    height: 100%;
}
.videoSwiper .swiper-wrapper,
.videoSwiper .swiper-slide {
    height: 100%;
}
.videoSwiper .swiper-slide {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}
.videoSwiper video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.slide-content,
.custom-progress {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.slide-content {
    bottom: 80px;
    width: calc(100% - 40px);
    color: #fff;
    padding: 0 20px;
    z-index: 2;
}
.custom-progress {
    bottom: 40px;
    height: 4px;
    width: 100%;
    display: flex;
    z-index: 15;
    gap: 5px;
    pointer-events: none;
}
.video-progress-segment {
    flex-grow: 1;
    background-color: rgba(255, 0, 0, 0.3);
    overflow: hidden;
    border-radius: 2px;
}
.video-progress-bar {
    height: 100%;
    width: 0%;
    background-color: red;
    transition: width linear;
}
  


.prod {
    margin: 20px;
    display: grid;
    grid-row-gap: 20px;
}
.prod-block-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-column-gap: 20px;
    grid-row-gap: 20px;
}
.prod-block-text {
    width: 100%;
    height: 100%;
    padding: 20px;
    border: 0.5px solid #ACACAC;
    background: #151515;
    transition: .2s;
}
.prod-block-text:hover {
    border: 0.5px solid var(--black);
    background: var(--primary);
}
.prod-block-text-inner {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    border: 0.5px solid #ACACAC;
    padding: 40px;
    transition: .2s;
}
.prod-img {
    display: block;
    width: 100%;
    height: 100%;
}
.prod-block-text:hover .prod-block-text-inner {
    color: var(--black);
    border: 0.5px solid var(--black);
}
.prod-block-column {
    display: flex;
    flex-direction: column;
    gap: 30px;
}
.prod-text {
    color: #FFF;
    /* max-width: 610px; */
    margin-bottom: 44px;
    transition: .2s;
}
.ocean-sub-text {
    max-width: 460px;
    width: 100%;
    margin-bottom: 60px;
}
.premium-text {
    margin-bottom: 30px;
}
.premium-sub-text {
    max-width: 480px;
    width: 100%;
    margin-bottom: 40px;
}
.prod-block-text:hover .prod-text {
    color: #000;
}
.hero-vid-category {
    transition: .2s;
}
.prod-block-text:hover .hero-vid-category {
    color: #000;
}
.pvc-sub-text {
    max-width: 454px;
}
.alu-sub-text {
    max-width: 454px;
}
.prod-block-btn-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}
.prod-block-btn-container img {
    width: 200px;
    height: auto;
    object-fit: contain;
}
.prod-block-btn {
    color: var(--grey-bg);
    background: var(--white);
    font-family: 'sf-500';
    font-size: 16px;
    padding: 14px 22px;
    transition: .2s;
}
.prod-block-text:hover .prod-block-btn {
    color: var(--white);
    background: var(--grey-bg);
}
.shine-wrap {
    position: relative;
    overflow: hidden;
}
.shine-wrap::after {
    content: '';
    position: absolute;
    top: -20%;
    right: -80%;
    bottom: -20%;
    left: -100%;
    background: linear-gradient(to bottom, rgba(229, 172, 142, 0), rgba(173, 172, 172, 0.279) 50%, rgba(229, 172, 142, 0));
    transform: rotateZ(135deg) translate(-5em, 7.5em);
}
.prod-block-text:hover .shine-wrap::after {
    animation: sheen 7s ease-in-out infinite;
}
@keyframes sheen {
    0%, 20% {
        transform: rotateZ(135deg) translate(-5em, 7.5em);
    }
    30%, 100% {
        transform: rotateZ(135deg) translate(-5em, -9em);
    }
    
}
.prod-block-btn:hover {
    transform: scale(1.1);
}
.prod-furniture {
    position: relative;
}
.furniture-btn {
    position: absolute;
    bottom: 50px;
    right: 50px;
}
.prod-btn {
    color: #FFF;
    text-align: center;
    width: 100%;
    border: 1px solid #FFF;
    background: #151515;
    font-size: 28px;
    padding: 20px 22px;
    cursor: pointer;
    transition: .2s;
}
.prod-btn:hover {
    color: var(--white);
    background: var(--primary);
    border: 1px solid var(--grey-bg);
}


/* Блок с видео начало */
.gl-int-video {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    width: 100%;
    height: 900px;
    overflow: hidden;
}
.gl_video-product {
    max-height: 700px;
}
.gl-int-vid-link {
    position: absolute;
    width: 100%;
    height: 100%;
}
.gl-int-vid-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: filter 0.3s ease, opacity 0.3s ease;
}
.play-button {
    position: relative;
    z-index: 2;
    width: 250px;
    height: 250px;
    border: 1px solid #D9D9D9;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: .2s;
}
.play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-35%, -50%);
    width: 0;
    height: 0;
    border-left: 80px solid #D9D9D9;
    border-top: 45px solid transparent;
    border-bottom: 45px solid transparent;
}
.play-button:hover {
    transform: scale(0.9);
}

.youtube-modal {
    display: none;
    position: fixed;
    z-index: 99999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    justify-content: center;
    align-items: center;
}

.youtube-modal.show {
    display: flex;
}
  
.youtube-modal-content {
    width: 100%;
    max-width: 1400px;
    aspect-ratio: 16/9;
    background: #000;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}
  
.youtube-modal-video {
    width: 100%;
    height: 100%;
    position: relative;
}
  
.youtube-modal-video iframe {
    position: absolute;
    width: 100%;
    height: 100%;
    border: none;
    left: 0;
    top: 0;
}
  
.youtube-modal-close {
    position: absolute;
    top: -50px;
    right: -50px;
    color: black;
    font-size: 32px;
    font-weight: bold;
    cursor: pointer;
    background: red;
    padding: 4px 10px;
    border-radius: 50%;
    line-height: 1;
}

/* Блок с видео конец */



.gl-technik-h4 {
    font-size: 38px;
    font-family: 'sf-700';
    margin-bottom: 20px;
}
.gl-technik-table {
    width: 100%;
    border-collapse: collapse;
}
.gl-technik-th,
.gl-technik-td {
    padding: 12px 0;
    border-bottom: 1px solid #444;
}

.gl-technik-td {
    text-align: right;
}



@media (max-width: 1680px) {
    .container {
        max-width: 1440px;
        padding: 0 20px;
    }
    .main-logo-preloader {
        max-width: 620px;
    }
    .hero-vid-text {
        left: 40px;
        bottom: 100px;
    }
    .hero-vid-timeline .hero-vid-progress-area {
        margin: 0 40px;
    }

    .feedback-form {
        padding-left: 80px;
        max-width: 815px;
    }
    .feedback-title {
        margin-bottom: 16px;
    }
    .feedback-text {
        margin-bottom: 30px;
    }
    .input {
        font-size: 20px;
        padding: 18px;
    }
    .feedback-btn {
        font-size: 18px;
    }
}

@media (max-width: 1500px) {
    .footer {
        padding: 60px;
    }
    .footer-menu {
        font-size: 16px;
    }
    .footer-form {
        max-width: 540px;
    }
    .gl_slogan-footer h2 {
        font-size: 80px;
    }
    .footer-copy-container {
        font-size: 14px;
    }
    .footer-line {
        margin: 0 30px 6px 30px;
    }
    .footer-copy {
        width: auto;
        white-space: nowrap;
    }

}

@media (max-width: 1440px) {
    .hero-vid-title {
        padding-bottom: 20px;
    }
    .hero-vid-subtitle {
        font-size: 16px;
        padding-bottom: 26px;
        max-width: 410px;
    }
    .item-category {
        font-size: 20px;
    }
    .prod-block-text {
        padding: 15px;
    }
    .prod-block-text-inner {
        padding: 20px;
    }
    .prod-block-btn {
        font-size: 14px;
    }
    .prod-btn {
        font-size: 24px;
    }
    .prod-text.pp-title {
        font-size: 45px;
    }
    .prod-text {
        margin-bottom: 24px;
    }
    .prod-btn {
        padding: 14px 22px;
    }
    .sert-text-container {
        justify-content: space-around;
    }
    .sert-title h2 {
        font-size: 110px;
    }
    .sert-text {
        font-size: 14px;
    }

    .feedback-form {
        padding-left: 60px;
        max-width: 750px;
    }
    .feedback-title {
        margin-bottom: 6px;
    }
    .feedback-text {
        margin-bottom: 30px;
    }
    .input {
        font-size: 20px;
        padding: 18px;
    }
    .feedback-btn {
        margin-bottom: 30px;
    }

    .port-text-bkh .gl-technik-h4 {
        font-size: 30px;
    }

    .gl-technik-h4 .eng_title-gradient {
        font-size: 36px;
    }
}

@media (max-width: 1340px) {
    .sert-title h2 {
        font-size: 100px;
    }
    .footer-logo video {
        width: 100%;
    }
}

@media (max-width: 1280px) {
    .container {
        max-width: 1120px;
        padding: 0 20px;
    }
    .main-logo-preloader {
        max-width: 500px;
    }
    .menu-list {
        margin-right: 70px;
    }
    .hero-vid-title.pp-title {
        font-size: 45px;
    }
    .prod-text.pp-title {
        font-size: 38px;
    }
    .prod-block-btn {
        padding: 10px 16px;
    }
    .prod-btn {
        font-size: 20px;
    }
    .gl-int-video {
        height: 100vh;
    }
    .sert-text-container {
        justify-content: space-between;
    }
    .sert-title h2 {
        font-size: 90px;
    }
    .sert-text {
        margin-bottom: 25px;
    }
    .feedback-title {
        font-size: 45px;
    }
    .feedback-text {
        font-size: 18px;
    }
    .feedback-form {
        max-width: 580px;
    }
    .feedback-btn {
        padding: 20px 50px;
    }
    .footer {
        padding: 40px;
    }
    .footer-form {
        max-width: 500px;
    }
    .gl_slogan-footer h2 {
        font-size: 70px;
    }

    .gl_slogan-container {
        max-width: 680px;
    }
    .gl_slogan-container h2 {
        font-size: 100px;
    }

    .gl-technik-h4 {
        font-size: 29px;
    }
    .gl-technik-th, .gl-technik-td {
        padding: 10px 0;
    }

    .port-text-bkh .gl-technik-h4 {
        font-size: 24px;
    }
    .gl-technik-h4 .eng_title-gradient {
        font-size: 28px;
    }

}

@media (max-width: 1160px) {
    .sert-text-container {
        padding: 60px 0;
        justify-content: space-around;
    }
    .sert-title h2 {
        font-size: 80px;
    }
    .sert-text {
        max-width: 420px;
        font-size: 12px;
        margin-bottom: 20px;
    }
    .input {
        font-size: 16px;
    }
}

@media (max-width: 1024px) {
    body {
        font-size: 14px;
    }
    .container {
        max-width: 920px;
        padding: 0 20px;
    }
    .main-logo-preloader {
        max-width: 500px;
    }
    .logo {
        max-width: 200px;
    }
    .menu-list {
        margin-right: 20px;
    }
    .item-category {
        font-size: 16px;
    }
    .prod-block-btn {
        padding: 10px 8px;
    }
    .sert-title h2 {
        font-size: 60px;
    }
    .sert-text {
        max-width: 350px;
        font-size: 10px;
        margin-bottom: 16px;
    }

    .feedback-title {
        font-size: 45px;
    }
    .feedback-text {
        font-size: 18px;
    }
    .feedback-form {
        max-width: 580px;
        padding-left: 40px;
    }
    .feedback-btn {
        padding: 20px 50px;
        font-size: 16px;
    }
}

@media (max-width: 820px) {
    .header {
        top: 20px;
        padding: 20px;
    }
    .menu-list-item {
        padding: 20px 5px;
    }
    .hero-vid-text {
        left: 20px;
    }
    .hero-vid-timeline .hero-vid-progress-area {
        margin: 0 20px;
    }
    .hero-vid-items {
        height: 60vh;
    }
    .hero {
        min-height: calc(60vh - 30px);
        max-height: calc(60vh - 30px);
        margin: 15px;
    }
    .hero-vid-text {
        bottom: 70px;
    }
    .hero-vid-title.pp-title {
        font-size: 36px;
    }
    .hero-vid-title {
        padding-bottom: 10px;
    }
    .hero-vid-subtitle {
        font-size: 14px;
        max-width: 450px;
        padding-bottom: 10px;
    }
    .item-category {
        font-size: 16px;
    }
    .prod {
        margin: 15px;
    }
    .prod-block-text {
        padding: 10px;
    }
    .prod-text.pp-title {
        font-size: 28px;
        margin-bottom: 14px;
    }
    .pvc-sub-text, .alu-sub-text {
        font-size: 12px;
    }
    .item-category {
        font-size: 14px;
    }
    .prod-block-text-inner {
        padding: 15px;
    }
    .prod-block-btn {
        font-size: 12px;
        padding: 10px;
    }
    .prod-block-row {
        grid-column-gap: 15px;
        grid-row-gap: 15px;
    }
    .prod-btn {
        font-size: 18px;
        padding: 12px 22px;
    }
    .gl-int-video {
        height: 40vh;
    }
    .play-button {
        width: 200px;
        height: 200px;
    }
    .slogan {
        height: 50vh;
    }
    .gl_slogan-container h2 {
        font-size: 60px;
    }
    .gl_slogan-subheading span {
        font-size: 30px;
    }
    .gl_slogan-container {
        max-width: 400px;
    }
    .sert-text-container {
        padding-top: 0;
        padding-bottom: 60px;
    }
    .sert-title h2 {
        font-size: 50px;
    }
    .sert-text {
        font-size: 10px;
        max-width: 340px;
        margin-bottom: 14px;
    }

    .gl_marquee_slider-container {
        height: 70px;
    }
    .gl_marquee_slider-list {
        min-width: calc(180px * var(--quantity));
    }
    .gl_marquee_slider-item {
        height: 70px;
    }

    .swiper-pagination-bullet {
        width: 14px;
        height: 14px;
        border: 2px solid #fff;
    }
    .sert {
        margin: 150px 20px;
    }
    .feedback {
        height: 100vh;
        padding: 20px;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }
    .feedback-inner {
        flex-direction: column;
        gap: 60px;
    }
    .feedback-logo {
        max-width: 400px;
        width: 100%;
        height: auto;
    }
    .feedback-form {
        padding-left: 0;
        text-align: center;
    }
    .feedback-title {
        font-size: 45px;
        margin-bottom: 0;
    }
    .feedback-text {
        font-size: 20px;
        margin-bottom: 30px;
    }
    .feedback-btn {
        width: 100%;
        font-size: 16px;
    }
    .input {
        font-size: 20px;
        padding: 15px 18px; 
    }
    .term-container {
        text-align: left;
    }
    form {
        text-align: left;
    }
    .footer {
        padding: 40px 20px;
    }
    .footer-menu {
        font-size: 14px;
    }
    .footer-form-container {
        flex-direction: column-reverse;
    }
    .footer-form {
        align-items: center;
        max-width: 520px;
    }
    .gl_slogan-footer h2 {
        font-size: 60px;
    }
    .footer-copy-container {
        font-size: 12px;
    }
    .footer-copy {
        max-width: 900px;
        width: 100%;
    }
    .footer-line {
        margin: 0 20px 6px 20px;
    }
    .footer-menu-container {
        padding-top: 60px;
        font-size: 16px;
    }
    .gl_slogan-footer {
        max-width: 420px;
    }
}

@media (max-width: 768px) {
    .container {
        max-width: 100%;
        padding: 0 20px;
    }
}

@media (max-width: 600px) {
}

@media (max-width: 480px) {
    body {
        font-size: 12px;
    }
}