#whatIntro {
    overflow: initial;
}

#whatIntro .inner-divider {
    padding-top: var(--top-tit-margin);
}

#whatIntro .title {
    margin-bottom: 100px;
}

#whatIntro .title h2 {
    font-size: var(--f80);
    color: #fff;
    text-align: center;
}

/* 탭메뉴 */
#whatNav {
    position: relative;
    top: 0;
    z-index: 99;
    transition: transform 0.35s ease, opacity 0.35s ease;
}

#whatNav.sticky {
    position: fixed;
    top: 0;
    left: 0;
    margin-top: 0;
    animation: stickyDown 0.45s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}


#header[mode="scroll"]:not(.down)+main #whatNav.sticky {
    display: none;

}

@keyframes stickyDown {
    from {
        transform: translateY(-12px);
        opacity: 0.85;
    }

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

#whatNav .what-nav {
    --font-size: var(--f22);
    display: flex;
    align-items: center;
    background: var(--color-primary);
    height: 80px;
}

#whatNav.sticky .what-nav {
    --font-size: var(--f18);
    width: 100vw;
    height: 65px;
}

#whatNav .what-nav a {
    position: relative;
    flex: 1;

    display: flex;
    align-items: center;
    justify-content: center;

    font-size: var(--font-size);
    font-weight: 600;
    color: rgba(255, 255, 255, 0.5);
}

#whatNav .what-nav a.active {
    color: #fff;
}

#whatNav .what-nav a:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 38px;
    background: rgba(255, 255, 255, 0.55);
}

/* 페이지 공용 */
#what .text-box h4 {
    font-size: var(--f36);
}

#what .text-box h5 {
    font-size: var(--f22);
    font-weight: 500;
}

#what .text-box p.desc {
    font-size: var(--f18);
    line-height: 1.6;
    color: var(--color-mute);
}

#what .text-box p.desc.f22 {
    font-size: var(--f22);
    color: var(--color-text);
}

#what .text-box h4~p.desc {
    margin-top: 35px;
    word-break: keep-all;
}

#what .text-box h4~h5 {
    margin-top: 30px;
    word-break: keep-all;
}

#what .flex-wrapper {
    display: flex;
    gap: 4.1666vw;
    align-items: center;
}

#whyPosture .text-box {
    flex: 1 0 auto;
}

#whyPosture .circle-map {
    --circle-row-gap: 20px;
    --sm-center-top: 55px;

    --circle-size-s: clamp(95px, 6.25vw, 120px);
    --circle-size-l: clamp(115px, 9.375vw, 180px);

    position: relative;
    width: fit-content;
    margin-top: 65px;
}

#whyPosture .circle-map .top {
    display: flex;
    gap: 2.083vw;
}

#whyPosture .circle-map .circle {
    position: relative;
    height: auto;
    aspect-ratio: 1/1;
    border: 1px solid #000;
    border-radius: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: "Poppins", "Pretendard", "Noto Sans KR", sans-serif;
    text-align: center;
    line-height: 1.2;
    z-index: 2;
}

#whyPosture .circle-map .circle-l {
    width: var(--circle-size-l);
    font-size: var(--f22);
}

#whyPosture .circle-map .circle-l.center {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

#whyPosture .circle-map .circle-s {
    width: var(--circle-size-s);
    font-size: var(--f18);
}

#whyPosture .circle-map .bottom {
    position: relative;
    display: flex;
    justify-content: center;
    gap: 18px;
    top: var(--circle-row-gap);
    width: fit-content;
    margin: 0 auto;
    padding-bottom: calc(var(--sm-center-top) + var(--circle-row-gap));
}

#whyPosture .circle-map .bottom .center {
    top: var(--sm-center-top);
}

#whyPosture .circle-map .bottom .circle-s.center::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    width: 1px;
    height: calc(var(--sm-center-top) + var(--circle-row-gap) + 1px);
    background: #000;
    z-index: 1;
    transform: unset;
}

#whyPosture .circle-map .bottom .circle-s:not(.center)::before {
    --percent: 96%;
    content: '';
    position: absolute;
    top: 20%;
    width: calc(var(--circle-size-s) / 2 + 25px);
    height: 1px;
    background: #000;
    z-index: 1;
}

#whyPosture .circle-map .bottom .circle-s.left::before {
    left: var(--percent);
    transform: rotate(-15deg);
}

#whyPosture .circle-map .bottom .circle-s.right::before {
    right: var(--percent);
    transform: rotate(15deg);
}

#whyPosture .process-wrap .title {
    text-align: center;
    margin: 100px 0 60px;
    word-break: keep-all;
}

#whyPosture .process-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}

#whyPosture .process-list .item {
    --box-padding: clamp(48px, 3.125vw, 60px);
    --box-height: 80px;
}

#whyPosture .process-list .item:first-child {
    --box-padding: 35px;
}

#whyPosture .process-list .box {
    position: relative;
    padding: 0 var(--box-padding);
    height: var(--box-height);
    background: var(--box-color);
    color: #fff;
    line-height: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

#whyPosture .process-list .box:not(:last-child)::after {
    content: '';
    position: absolute;
    right: calc((var(--box-height) / 2 - 2px) * -1);
    top: 0;
    z-index: 3;
    width: 0;
    height: 0;
    border-top: calc(var(--box-height) / 2) solid transparent;
    border-bottom: calc(var(--box-height) / 2) solid transparent;
    border-left: calc(var(--box-height) / 2 - 2px) solid currentColor;
    color: var(--box-color);
}

#whyPosture .process-list .box strong {
    font-family: "Poppins", "Pretendard", "Noto Sans KR", sans-serif;
    font-size: var(--f22);
    font-weight: 600;
    letter-spacing: 0;
    display: block;
}

#whyPosture .process-list .box span {
    display: block;
    font-size: var(--f18);
    margin-top: 4px;
}

#whyPosture .process-list p.desc {
    font-size: var(--f18);
    line-height: 1.7;
    margin-top: 20px;
    color: var(--color-mute);
    padding-left: var(--box-padding);
    word-break: keep-all;
}

#what #nationalTech .flex-wrapper,
#what #mobileApp .flex-wrapper {
    justify-content: center;
    align-items: flex-start;
    gap: 6.25vw;
}

#what #nationalTech .flex-wrapper .text-box,
#what #mobileApp .flex-wrapper .text-box {
    margin-top: var(--tit-margin);
}

#mobileApp .btn-wrap {
    margin-top: 30px;
}

#mobileApp .down-app {
    border: 1px solid #eee;
    border-radius: 10px;
}

#aiSystem *,
#aiSystem .text-box p.desc {
    color: #fff;
    text-align: center;
}

#aiSystem .text-box h4 {
    font-weight: 600;
}

#aiSystem .text-box h4::before {
    content: '';
    display: block;
    width: 1px;
    height: 40px;
    background-color: #fff;
    margin: 0 auto 40px;
}

#aiSystem .flex-wrapper {
    justify-content: center;
    position: relative;
    top: -30px;
}

#techProgram .program-box {
    overflow: hidden;
    border-radius: 20px;
    color: #fff;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

#techProgram .program-box .item {
    --item-padding-1: clamp(75px, 4.6875vw, 90px);
    --item-padding-2: clamp(90px, 6.25vw, 120px);
    display: flex;
    gap: clamp(60px, 5vw, 96px);
    padding: var(--item-padding-1) var(--item-padding-2);
}

#techProgram .program-box .item~.item {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

#techProgram .program-box .item.row-bottom {
    align-items: center;
}

#techProgram .program-box .item.row-bottom .text-area {
    padding-left: 35px;
}

#techProgram .program-box .item .text-area h5 {
    margin-bottom: 45px;
    font-size: var(--f28);
    font-weight: 700;
}

#techProgram .program-box .item .text-area strong {
    display: block;
    margin-bottom: 30px;
    font-size: var(--f18);
    font-weight: 600;
    word-break: keep-all;
}

#techProgram .program-box .item .text-area p {
    font-size: var(--f18);
    font-weight: 300;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.6);
    word-break: keep-all;
}

#techProgram .program-box .item .text-area p span {
    color: #fff;
}

#techProgram .program-box .item .circle-area {
    display: flex;
    align-items: center;
}

#techProgram .program-box .item .circle-item {
    width: clamp(140px, 10.4166vw, 200px);
    height: auto;
    aspect-ratio: 1/1;
    border: 1px solid rgba(255, 255, 255, 0.85);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: translateX(-60px) scale(0.92);
    transition:
        opacity 2.2s ease,
        transform 2.2s cubic-bezier(0.22, 1, 0.36, 1);
}

#techProgram .program-box .item .circle-item:not(:first-child) {
    margin-left: -10px;
}

#techProgram .program-box .item .circle-item strong {
    margin-bottom: 10px;
    font-size: var(--f22);
    font-weight: 600;
}

#techProgram .program-box .item .circle-item span {
    font-size: var(--f18);
    color: rgba(255, 255, 255, 0.6);
}

/* active 됐을 때 차례대로 쌓이는 애니메이션 */
#techProgram.active .program-box .item .circle-item {
    opacity: 1;
    transform: translateX(0) scale(1);
}

#techProgram.active .program-box .item .circle-item:nth-child(1) {
    transition-delay: 0.05s;
}

#techProgram.active .program-box .item .circle-item:nth-child(2) {
    transition-delay: 0.22s;
}

#techProgram.active .program-box .item .circle-item:nth-child(3) {
    transition-delay: 0.39s;
}

/* Desktop ( 1024px ~)*/
@media all and (min-width: 1024px) {}

/* Laptop ( 1024px ~ 1440px)*/
@media all and (min-width: 1024px) and (max-width: 1440px) {

    #what #nationalTech .flex-wrapper .text-box,
    #what #mobileApp .flex-wrapper .text-box {
        min-width: 430px;
    }

    #what #mobileApp .flex-wrapper .text-box {
        margin-top: 20px;
    }

    #techProgram .program-box .item {
        padding: 60px 65px;
    }

    #techProgram .program-box .item.row-bottom .text-area {
        padding-left: 0;
    }
}

/* Tablet ( 768px ~ 1023px)*/
@media all and (min-width: 768px) and (max-width: 1023px) {
    #whatNav .what-nav {
        height: 65px;
    }

    #whatNav .what-nav a:not(:last-child)::after {
        height: 30px;
    }

    /* 페이지 공용 */
    #what .text-box h4~p.desc {
        margin-top: 25px;
    }

    #what .text-box h4~h5 {
        margin-top: 20px;
    }

    #what .flex-wrapper {
        flex-direction: column;
        row-gap: var(--tit-margin);
    }

    #whyPosture .image {
        order: 2;
    }

    #whyPosture .image img {
        height: auto;
        aspect-ratio: 3 / 2;
        object-fit: cover;
    }

    #whyPosture .text-box {
        text-align: center;
    }

    #whyPosture .circle-map {
        --circle-row-gap: 40px;
        --circle-size-s: 120px;
        --circle-size-l: 180px;
    }

    #whyPosture .process-list .item {
        --box-padding: clamp(48px, 3.125vw, 60px);
        --box-height: 66px;
    }

    #whyPosture .process-list .item:first-child {
        --box-padding: 25px;
    }

    #whyPosture .process-list .box strong {
        font-size: 17px;
    }

    #whyPosture .process-list p.desc {
        font-size: 14px;
        padding-left: calc(var(--box-padding) - 20px);
    }

    #what #nationalTech .flex-wrapper,
    #what #mobileApp .flex-wrapper {
        flex-direction: column;
        row-gap: var(--tit-margin);
        align-items: center;
    }

    #what #nationalTech .flex-wrapper .text-box,
    #what #mobileApp .flex-wrapper .text-box {
        margin-top: 0;
        text-align: center;
    }

    #what #nationalTech .image {
        order: 2;
        margin: 0 auto;
    }

    #what #nationalTech .image img {
        height: auto;
        aspect-ratio: 40/38;
        object-fit: cover;
    }

    #mobileApp .btn-wrap {
        justify-content: center;
    }

    #mobileApp .image img {
        height: auto;
        aspect-ratio: 8 / 5;
        object-fit: cover;
    }

    #techProgram .program-box .item {
        --item-padding-1: clamp(60px, 7.8125vw, 75px);
        --item-padding-2: clamp(60px, 8.8vw, 80px);
        text-align: center;
        justify-content: center;
    }

    #techProgram .program-box .item.row-bottom {
        flex-direction: column-reverse;
    }

    #techProgram .program-box .item.row-bottom .text-area {
        padding-left: 0;
    }
}

/* Mobile ( ~ 767px)*/
@media all and (max-width: 767px) {
    #whatIntro .title {
        margin-bottom: 110px;
    }

    #whatNav .what-nav {
        position: absolute;
        left: -5vw;
        width: 100vw;
        --font-size: 14px;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        height: 90px;
    }

    #whatNav.sticky .what-nav {
        left: 0;
        width: 100vw;
        --font-size: 13px;
        height: 90px;
    }

    #whatNav .what-nav a {
        padding: 10px 0;
    }

    #whatNav .what-nav a:not(:last-child)::after {
        height: 22px;
    }

    #whatNav .what-nav a:nth-child(even)::after {
        display: none;
    }


    #what .text-box h4~p.desc {
        margin-top: 25px;
    }

    #what .text-box h4~h5 {
        margin-top: 20px;
    }

    #what .flex-wrapper {
        flex-direction: column;
        row-gap: var(--tit-margin);
        align-items: center;
        text-align: center;
    }

    #whyPosture .image {
        order: 2;
    }

    #whyPosture .image img {
        height: auto;
        aspect-ratio: 3 / 2;
        object-fit: cover;
    }

    #whyPosture .circle-map {
        --circle-size-s: clamp(70px, 15.625vw, 120px);
        --circle-size-l: clamp(100px, 23.4375vw, 180px);
        margin-top: 45px;
    }

    #whyPosture .circle-map .circle-s {
        font-size: 11px;
    }

    #whyPosture .process-wrap .title {
        margin: 65px 0 40px;
    }

    #whyPosture .process-list {
        --arrow-left: 25px;
        grid-template-columns: repeat(1, 1fr);
        row-gap: 30px;
    }

    #whyPosture .process-list .item {
        --box-padding: 25px;
        --box-height: 60px;
        width: 85%;
        margin: 0 auto;
        position: relative;
        right: calc(var(--arrow-left) / 2);
    }

    #whyPosture .process-list .item:first-child {
        --box-padding: 25px;
    }

    #whyPosture .process-list .box:not(:last-child)::after {
        right: calc(var(--arrow-left) * -1 + 0.5px);
        border-top: 30px solid transparent;
        border-bottom: 30px solid transparent;
        border-left: var(--arrow-left) solid currentColor;
    }

    #whyPosture .process-list p.desc {
        margin-top: 15px;
        padding-left: calc(var(--box-padding) - 15px);
    }

    #what #nationalTech .flex-wrapper,
    #what #mobileApp .flex-wrapper {
        flex-direction: column;
        row-gap: var(--tit-margin);
        align-items: center;
    }

    #what #nationalTech .flex-wrapper .text-box,
    #what #mobileApp .flex-wrapper .text-box {
        margin-top: 0;
        text-align: center;
    }

    #what #nationalTech .image {
        order: 2;
        margin: 0 auto;
    }

    #what #nationalTech .image img {
        height: auto;
        aspect-ratio: 40/38;
        object-fit: cover;
    }

    #mobileApp .btn-wrap {
        justify-content: center;
    }

    #aiSystem .text-box h4::before {
        height: 30px;
        margin: 20px auto 30px;
    }

    #aiSystem .text-box h4~p.desc {
        width: 95%;
        margin-top: 35px;
        margin-left: auto;
        margin-right: auto;
        font-weight: 300;
    }

    #techProgram .program-box .item {
        --item-padding-1: clamp(45px, 12vw, 75px);
        --item-padding-2: clamp(30px, 3.25vw, 90px);
        row-gap: 35px;
        text-align: center;
        justify-content: center;
    }

    #techProgram .program-box .item.row-bottom {
        flex-direction: column-reverse;
    }

    #techProgram .program-box .item.row-bottom .text-area {
        padding-left: 0;
    }

    #techProgram .program-box .item .text-area h5 {
        margin-bottom: 40px;
    }

    #techProgram .program-box .item .text-area strong {
        margin-bottom: 25px;
    }

    #techProgram .program-box .item .circle-item {
        width: clamp(100px, 26.666vw, 140px);
    }

    #techProgram .program-box .item .circle-item strong {
        margin-bottom: 3px;
    }

    #techProgram .program-box .item .circle-item span {
        font-size: 12px;
    }
}