/* first-section */
.first-section {
    min-height: 800px;
    height: 100vh;
    background-position: center center;
    background-repeat: no-repeat;
    background-size: cover;
}

.static-section {
    background-image: url(/images/about/static-bg.png);
}

.dynamic-section {
    background-image: url(/images/about/dynamic-bg.png);
}

.first-section .content-inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.first-section .title-group {
    gap: 40px 0;
    align-items: center;
}

.first-section .desc {
    text-align: center;
    font-size: var(--fontSizeLg);
    line-height: var(--lineHeightLg);
}

.first-section .title .txt-white,
.first-section .title .txt-primary {
    display: inline-block;
}

.first-section .title .txt-white,
.first-section .title .txt-primary,
.first-section .desc {
    opacity: 0;
    transform: translateY(30px);
    animation: showUp 0.8s ease-out forwards;
}

.first-section .title .txt-white {
    animation-delay: 0.2s;
}

.first-section .title .txt-primary {
    animation-delay: 0.55s;
}

.first-section .desc {
    animation-delay: 0.9s;
}

@keyframes showUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.scroll-group {
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    flex-direction: column;
    gap: 10px 0;
}

.scroll-group p {
    font-size: var(--fontSizeBase);
    line-height: var(--lineHeightSm);
    color: var(--colorWhite);
    letter-spacing: 0.5px;
}

.scroll-bar {
    width: 2px;
    height: 100px;
    background-color: rgba(220, 220, 220, 0.80);
    position: relative;
}

.scroll-bar span {
    position: absolute;
    width: 100%;
    height: 0;
    background-color: var(--colorWhite);
    animation: scroll-Bar 2s linear infinite;
}

@keyframes scroll-Bar {
    from {
        height: 0;
    }

    to {
        height: 100%;
    }
}

/* first-section */


/* second-section */
.second-section {
    padding: 140px 0 135px;
}

.second-section .content-inner {
    display: flex;
    align-items: center;
    flex-direction: column;
    gap: 80px 0;
}

.second-section .title-group {
    align-items: center;
}

.second-section .section-title {
    text-align: center;
}

.advantage-box {
    width: 100%;
}

.advantage-box ul {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0 120px;
}

.advantage-box ul li {
    display: flex;
    align-items: center;
    flex-direction: column;
    gap: 32px 0;
}

.advantage-box ul li p {
    font-size: var(--fontSizeLg);
    font-weight: var(--fontWeightBold);
    line-height: var(--lineHeightLg);
}

/* second-section */


/* third-section */
.third-section {
    height: max-content;
    background-color: var(--colorGray100);
}

.third-section .content-inner {
    height: 100vh;
    display: grid;
    grid-template-columns: 440px 1fr;
    align-items: flex-start;
    gap: 0 90px;
}

.third-section .content-inner>.title-group {
    margin-top: 250px;
}

.vertical-scroll-box {
    width: auto;
    height: 100vh;
    overflow-y: scroll;
    padding: 180px 0 150px;
    box-sizing: border-box;
}

.vertical-scroll-box::-webkit-scrollbar {
    display: none;
}

.vertical-scroll-box ul {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 80px 60px;
}

.vertical-scroll-box ul li:first-child {
    margin-top: 160px;
}

.vertical-scroll-box ul li:last-child {
    margin-top: -160px;
}

.vertical-scroll-box ul li {
    display: flex;
    align-items: flex-start;
    flex-direction: column;
    gap: 22px 0;
}

.vertical-scroll-box .title-group {
    gap: 12px 0;
}

.vertical-scroll-box ul li p {
    font-size: var(--fontSize4Xl);
    font-weight: var(--fontWeightSemibold);
    line-height: var(--lineHeight2Xl);
}

/* third-section */


/* fourth-section */
.fourth-section {
    padding: 140px 0;
}

.fourth-section .content-inner {
    display: grid;
    align-items: center;
    justify-content: space-between;
    grid-template-columns: auto auto;
    gap: 0 100px;
}

.left-text-group {
    display: flex;
    align-items: flex-start;
    flex-direction: column;
    gap: 80px 0;
}

.fourth-section img {
    width: auto;
}

/* fourth-section */


/* fifth-section */
.fifth-section {
    padding: 180px 0;
}

/* fifth-section */





/* responsive css */
@media screen and (min-width: 768px) and (max-width: 1279px) {

    /* first-section */
    .first-section {
        min-height: 1024px;
    }

    .first-section .title-group {
        gap: 30px 0;
    }

    .first-section .title {
        font-size: var(--fontSize9Xl);
        line-height: var(--lineHeight11Xl);
    }

    .first-section .desc {
        font-size: var(--fontSizeMd);
        line-height: var(--lineHeightMd);
    }

    .dynamic-section .desc br {
        display: none;
    }

    /* first-section */


    /* second-section */
    .second-section {
        padding: 70px 0 80px;
    }

    .second-section .content-inner {
        gap: 40px 0;
    }

    .advantage-box ul {
        gap: 0 80px;
    }

    .advantage-box ul li {
        width: 130px;
        gap: 15px 0;
    }

    .advantage-box ul li img {
        width: 100%;
    }

    /* second-section */


    /* third-section */
    .third-section .content-inner {
        height: max-content;
        grid-template-columns: 1fr;
        gap: 40px 0;
        padding: 80px 0;
    }

    .third-section .content-inner>.title-group {
        margin-top: 0;
    }

    .third-section .content-inner>.title-group .desc br {
        display: none;
    }

    .vertical-scroll-box {
        height: max-content;
        overflow-y: auto;
        padding: 0;
    }

    .vertical-scroll-box::-webkit-scrollbar {
        display: none;
    }

    .vertical-scroll-box ul {
        width: 100%;
        gap: 36px 40px;
    }

    .vertical-scroll-box ul li:first-child {
        margin-top: 0;
    }

    .vertical-scroll-box ul li:last-child {
        margin-top: 0;
    }

    .vertical-scroll-box ul li,
    .vertical-scroll-box ul li img {
        width: 100%;
    }

    .vertical-scroll-box ul li p {
        font-size: var(--fontSizeLg);
        line-height: var(--lineHeightLg);
    }

    .vertical-scroll-box ul li .desc {
        font-size: var(--fontSizeBase);
        line-height: var(--lineHeightSm);
    }

    /* third-section */


    /* fourth-section */
    .fourth-section {
        padding: 80px 0;
    }

    .fourth-section .content-inner {
        grid-template-columns: 1fr;
        gap: 40px 0;
    }

    .left-text-group {
        gap: 30px 0;
    }

    .fourth-section img {
        width: 100%;
    }

    /* fourth-section */


    /* fifth-section */
    .fifth-section {
        padding: 80px 0;
    }

    /* fifth-section */
}

@media screen and (max-width: 767px) {

    /* first-section */
    .first-section {
        min-height: 706px;
    }

    .first-section .title-group {
        gap: 20px 0;
    }

    .first-section .title {
        font-size: var(--fontSize7Xl);
        line-height: var(--lineHeight7Xl);
        text-align: center;
    }

    .first-section .desc {
        font-size: var(--fontSizeSm);
        line-height: var(--lineHeightXs);
    }

    .scroll-bar {
        height: 90px;
    }

    /* first-section */


    /* second-section */
    .second-section {
        padding: 60px 0;
    }

    .second-section .content-inner {
        gap: 40px 0;
    }

    .second-section .desc {
        text-align: center;
    }

    .advantage-box ul {
        width: 100%;
        flex-direction: column;
        gap: 40px 0;
    }

    .advantage-box ul li {
        gap: 15px 0;
    }

    .advantage-box ul li img {
        width: 130px;
    }

    .advantage-box ul li p {
        font-size: var(--fontSizeMd);
        line-height: var(--lineHeightMd);
    }

    /* second-section */


    /* third-section */
    .third-section {
        padding: 50px 0;
    }

    .third-section .content-inner {
        height: auto;
        grid-template-columns: 1fr;
        gap: 30px 0;
    }

    .third-section .content-inner>.title-group {
        margin-top: 0;
    }

    .vertical-scroll-box {
        height: max-content;
        overflow-y: auto;
        padding: 0;
    }

    .vertical-scroll-box ul {
        width: 100%;
        gap: 30px 8px;
    }

    .vertical-scroll-box ul li:first-child {
        margin-top: 0;
    }

    .vertical-scroll-box ul li:last-child {
        margin-top: 0;
    }

    .vertical-scroll-box ul li {
        gap: 20px 0;
    }

    .vertical-scroll-box ul li p {
        font-size: var(--fontSizeMd);
        line-height: var(--lineHeightMd);
    }

    .vertical-scroll-box .desc {
        display: none;
    }

    /* third-section */


    /* fourth-section */
    .fourth-section {
        padding: 60px 0;
    }

    .fourth-section .content-inner {
        grid-template-columns: 1fr;
        gap: 30px 0;
    }

    .left-text-group {
        width: 100%;
        gap: 30px 0;
    }

    .left-text-group .desc br{
        display: none;
    }

    /* fourth-section */


    /* fifth-section */
    .fifth-section {
        padding: 50px 0 35px;
    }

    /* fifth-section */
}