@import url("https://fonts.googleapis.com/css2?family=Open+Sans:ital,wght@0,400;0,500;0,700;1,300&display=swap");
body {
    font-family: "Open Sans", sans-serif;
    font-weight: 300;
}
.jumbotron {
    justify-content: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    background-image: url(https://4c-calculator.com/assets/header-background.png);
    background-size: cover;
    padding-bottom: 0px;
    margin-bottom: 0px;
}
.jumbotron .title,
.jumbotron p {
    width: 100%;
    text-align: center;
    margin: auto;
}
.image-banner {
    margin: auto;
    padding-top: 3vw;
    width: auto;
}
h1.title {
    font-size: 4.5rem;
}

.title {
    color: #005fe9 !important;
    font-weight: bold;
}
.row .scroll-gif {
    display: flex;
    justify-content: center;
}
.scroll-gif {
    width: 50px;
    margin: auto;
}
.row.about .col-sm-4 {
    padding: 2vw 0px;
}
img.about-img {
    width: 90%;
}
.row.about-text {
    font-size: 2.5rem;
    font-weight: bold;
    line-height: 1.2;
    margin-top: 1rem;
}
.row.criteria {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    padding: 2rem 0rem;
}
.criteria .col-xs {
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: center;
}
.criteria-icons {
    width: 5vw;
}
.row.criteria::before,
.row.criteria::after {
    content: none;
}
.col-xs p {
    color: #005fe9;
    font-weight: 600;
    font-size: 1.5rem;
    padding-top: 0.5rem;
}

.row.featured,
.row.faq {
    background-color: #f7f7f7;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 6rem 0rem 10rem 0rem;
    width: 100%;
    margin: 0%;
}
.featured .title,
.faq .title {
    padding-bottom: 4rem;
}
.featured .col-sm-10 {
    display: flex;
    flex-direction: row;
    align-items: center;
}

.featured .col-sm-10 .col-sm-4 .featured-img {
    width: 80%;
}

.sub-title {
    font-weight: bold;
    text-align: left;
    margin: 0px !important;
}
.featured-icons {
    width: 2vw;
    height: 2vw;
    margin: 2rem 0rem 1rem 0rem;
}
.featured .col-sm-10 .col-sm-4 .row {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
}
.sm-italic {
    font-style: italic;
    font-size: 1.2rem;
    font-weight: lighter;
}
.download-link {
    text-decoration: underline;
}
.faq .col-sm-10 {
    margin: auto;
    float: none;
}
.faq .title {
    text-align: center;
}

.row.footer {
    width: 100%;
    background-image: url(https://4c-calculator.com/assets/bgbanner-desktop.png);
    background-size: contain;
    background-position: right;
    height: 30vw;
    background-repeat: no-repeat;
}
.row.bottom {
    margin: 0;
    width: 100%;
}

.row.scroll {
    width: 100%;
    margin: 0;
}
.col-sm-5.left {
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.row {
    margin: 0;
}

img.download-button {
    width: 10vw;
}

.col-sm-5.left p {
    font-size: 1.5rem;
}

.col-sm-5.left h3 {
    font-size: 3.6rem;
}
.row.sitemap {
    background: #005fe9;
    color: white;
    padding: 15px 0px;
    text-align: center;
}
.row.top a {
    color: white;
}
span .sitemap-button {
    text-decoration: underline;
}
.row.banner {
    display: flex;
    align-items: stretch;
    height: 100%;
}
.row.about {
    width: 80%;
    margin: auto;
}
.swiper {
    width: 80%;
    margin: auto;
}
img.slider-image {
    width: 100%;
}
#howto {
    padding: 70px 0px;
}
#howto .title {
    text-align: center;
    padding-bottom: 40px;
}

@media screen and (min-width: 768px) {
    .pc-none {
        display: none !important;
    }
    .jumbotron {
        padding-top: 140px;
    }
    .header {
        width: 100%;
        height: 70px;
        display: inline-flex;
        justify-content: space-between;
        padding: 0px 5%;
        position: fixed;
        background: white;
        z-index: 70;
        box-shadow: 0px 3px 16px 0px grey;
    }
    .logo-container {
        width: max-content;
        display: flex;
        align-items: center;
    }

    .header .logo-container .logo {
        width: 200px;
    }

    .header .menu-container-pc {
        width: max-content;
        display: inline-flex;
        align-items: center;
        justify-content: flex-end;
    }

    .header .menu-container-pc .menu-btn {
        font-size: 1.6rem;
        font-weight: bold;
        margin: 0;
        padding: 0px 18px;
        line-height: 2;
    }
    .menu-btn.blue-btn {
        background: #005fe9;
        color: white;
        line-height: 2;
        border-radius: 21px;
    }
    .menu-link {
        color: inherit;
        text-decoration: none !important;
    }
    #howto {
        padding: 70px 0px 70px 0px;
    }
    .swiper-wrapper {
        padding-bottom: 10%;
    }
    .swiper-button-next:after,
    .swiper-rtl .swiper-button-prev:after {
        content: "" !important;
        background-image: url(https://4c-calculator.com/assets/next-arrow.png);
        width: 70px;
        height: 40px;
        background-position: center;
        background-size: contain;
        background-repeat: no-repeat;
    }
    .swiper-button-next,
    .swiper-rtl .swiper-button-prev {
        right: 40% !important;
        left: auto;
        width: 5% !important;
        height: auto;
    }

    .swiper-button-prev,
    .swiper-rtl .swiper-button-next {
        left: 40% !important;
        right: auto;
        width: 5% !important;
        height: auto;
    }
    .swiper-button-prev:after,
    .swiper-rtl .swiper-button-next:after {
        content: "" !important;
        background-image: url(https://4c-calculator.com/assets/prev-arrow.png);
        width: 70px;
        height: 40px;
        background-position: center;
        background-size: contain;
        background-repeat: no-repeat;
    }
    .swiper-button-next,
    .swiper-button-prev {
        position: absolute;
        top: 50%;
        width: 150px;
        height: 40px;
        margin-top: calc(0px - (var(--swiper-navigation-size) / 2));
        z-index: 10;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--swiper-navigation-color, var(--swiper-theme-color));
    }
    .swiper-button-next:after,
    .swiper-button-prev:after {
        font-family: swiper-icons;
        font-size: var(--swiper-navigation-size);
        text-transform: none !important;
        letter-spacing: 0;
        font-variant: initial;
        line-height: 1;
    }

    .swiper-button-next,
    .swiper-button-prev {
        top: 90% !important;
    }
}

@media screen and (max-width: 767px) {
    .sp-none {
        display: none !important;
    }
    .jumbotron {
        padding-top: 20vw;
    }
    h1.title {
        font-size: 9rem;
    }
    .jumbotron p {
        font-size: 2rem;
        width: 90%;
        margin-top: 10px;
    }
    .image-banner {
        margin: auto;
        padding-top: 10vw;
        width: 100%;
    }
    .row.criteria {
        display: grid;
        padding: 2rem 0rem;
        grid-template-columns: repeat(2, 1fr);
    }
    .criteria-icons {
        width: 25vw;
    }
    .row.about .col-sm-4 .row .col-xs p {
        font-size: 1.6rem;
    }
    .row.about .col-sm-4 .row p {
        font-size: 1.6rem;
    }
    .row.about {
        width: 90%;
        margin: auto;
        padding: 10vw 0px;
    }
    .featured .col-sm-10 {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    .featured-icons {
        width: 10vw;
        height: 10vw;
        margin: 2rem 0rem 1rem 0rem;
    }
    .col-sm-10 .col-sm-4 .row p {
        font-size: 1.6rem;
        padding-top: 5px;
    }

    h3.sub-title {
        font-size: 2.3rem;
    }
    h2.title {
        font-size: 3.5rem;
        margin: auto;
    }
    .featured .col-sm-10 .col-sm-4 .featured-img {
        width: 90%;
        padding: 20px 0px;
    }
    #accordion-1 .head {
        padding: 14px 0px;
        width: 90%;
        margin: auto;
    }
    #accordion-1 .content {
        width: 90%;
        margin: auto;
        color: #333333;
    }
    .qna_ttl h3 {
        line-height: 1.5;
    }
    .row.top p {
        width: 80%;
        margin: auto;
        padding: 10px 0px;
        line-height: 1.5;
        font-size: 1.6rem;
    }

    .row.bottom p {
        width: 80%;
        margin: auto;
    }

    .header {
        width: 100%;
        height: 14vw;
        display: inline-flex;
        align-items: center;
        justify-content: space-between;
        flex-direction: row;
        padding: 0px 5%;
        z-index: 6;
        position: fixed;
        background: white;
        box-shadow: 0px 3px 16px 0px grey;
    }
    .header .logo-container .logo {
        width: 46vw;
    }
    .header .menu-container-mobile {
        width: 15%;
        height: 100%;
        cursor: pointer;
        display: flex;
        justify-content: center;
        align-items: center;
    }
    .header-hr,
    .header-hr::before,
    .header-hr::after {
        content: "";
        height: 3px;
        width: 30px;
        border-radius: 10px;
        background-color: #000;
        position: absolute;
        transform-origin: 50% 50%;
    }
    .header-hr::before {
        top: -8px;
        right: 0%;
        transition:
            top 300ms 300ms cubic-bezier(0.23, 1, 0.32, 1),
            transform 300ms cubic-bezier(0.23, 1, 0.32, 1);
    }
    .header-hr::after {
        top: 8px;
        right: 0%;
        transition:
            top 300ms 300ms cubic-bezier(0.23, 1, 0.32, 1),
            transform 300ms cubic-bezier(0.23, 1, 0.32, 1);
    }
    .header-hr.animate {
        background-color: white;
        transition: all 0.8s cubic-bezier(0.19, 1, 0.22, 1);
    }
    .header-hr.animate::after {
        top: 0 !important;
        transform: rotate(45deg);
        transition:
            top 300ms cubic-bezier(0.23, 1, 0.32, 1),
            transform 300ms 300ms cubic-bezier(0.23, 1, 0.32, 1);
    }

    .header-hr.animate::before {
        top: 0 !important;
        transform: rotate(-45deg);
        transition:
            bottom 300ms cubic-bezier(0.23, 1, 0.32, 1),
            transform 300ms 300ms cubic-bezier(0.23, 1, 0.32, 1);
    }
    .menu-sp {
        text-align: center;
        position: fixed;
        background: white;
        width: 100%;
        padding: 20px 0px;
        display: flex;
        flex-direction: column;
        align-items: center;
        z-index: 5;
        top: -70vw;
        transition: 1s;
        transition-timing-function: ease;
        box-shadow: 0px 3px 16px 0px grey;
    }
    .menu-link {
        color: inherit;
        text-decoration: none !important;
    }

    .menu-sp .menu-btn {
        font-size: 2rem;
        font-weight: bold;
        margin: 0;
        padding: 10px 0px;
    }
    .menu-sp .menu-btn.blue-btn {
        background: #005fe9;
        width: max-content;
        margin: 0;
        color: white;
        padding: 10px 15px;
        border-radius: 27px;
    }
    .is-active {
        top: 14vw !important;
        transition: 1s;
        transition-timing-function: ease;
    }
    .swiper-wrapper {
        padding-bottom: 10%;
    }
    .swiper-button-next:after,
    .swiper-rtl .swiper-button-prev:after {
        content: "" !important;
        background-image: url(https://4c-calculator.com/assets/next-arrow.png);
        width: 70px;
        height: 40px;
        background-position: center;
        background-size: contain;
        background-repeat: no-repeat;
    }
    .swiper-button-next,
    .swiper-rtl .swiper-button-prev {
        right: 20% !important;
        left: auto;
        width: 15% !important;
        height: auto;
    }

    .swiper-button-prev,
    .swiper-rtl .swiper-button-next {
        left: 20% !important;
        right: auto;
        width: 15% !important;
        height: auto;
    }
    .swiper-button-prev:after,
    .swiper-rtl .swiper-button-next:after {
        content: "" !important;
        background-image: url(https://4c-calculator.com/assets/prev-arrow.png);
        width: 70px;
        height: 40px;
        background-position: center;
        background-size: contain;
        background-repeat: no-repeat;
    }
    .swiper-button-next,
    .swiper-button-prev {
        position: absolute;
        top: 50%;
        width: 150px;
        height: 40px;
        margin-top: calc(0px - (var(--swiper-navigation-size) / 2));
        z-index: 10;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--swiper-navigation-color, var(--swiper-theme-color));
    }
    .swiper-button-next:after,
    .swiper-button-prev:after {
        font-family: swiper-icons;
        font-size: var(--swiper-navigation-size);
        text-transform: none !important;
        letter-spacing: 0;
        font-variant: initial;
        line-height: 1;
    }

    .swiper-button-next,
    .swiper-button-prev {
        top: 90% !important;
    }
    .swiper-wrapper {
        padding-bottom: 40%;
    }
}

@media screen and (max-width: 480px) {
    .row.footer {
        width: 100%;
        background-image: url(https://4c-calculator.com/assets/bgbanner-mobile.png);
        background-size: cover;
        background-position: right;
        height: 80vw;
        background-repeat: no-repeat;
    }
    .col-sm-5.left {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        padding: 15vw 0vw;
    }
    .mobile-banner .col-sm-5 .title {
        text-align: center;
        width: 80%;
    }
    .mobile-banner .col-sm-5 p {
        font-size: 2rem;
    }
    img.download-button {
        width: 35vw;
    }
}

.qna_ttl:after {
    content: "\002B";
    color: black;
    border-radius: 50px;
    float: right;
    margin-left: 5px;
    transform: scale(3);
}

.active:after {
    content: "\2212";
    color: black;
    transform: scale(3);
}

#accordion-1 {
    position: relative;
    border-bottom: 1px solid rgba(128, 128, 128, 0.581);
}

.qna_ttl h3 {
    font-size: 1.6rem;
    text-align: left;
    color: black;
    margin: 18px 0px;
    font-weight: bold;
}

.qna_text p {
    font-size: 1.4rem;
    text-align: left;
    color: black;
    line-height: normal;
    line-height: 2;
}

#accordion-1 .head {
    color: black;
    padding: 0px;
    cursor: pointer;
    transition: 0.2s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#accordion-1 .arrow {
    color: #ac1821;
    font-size: 20px;
    transition: 0.25s ease;
    opacity: 1;
    transform: rotate(-90deg);
}

#accordion-1 .head:hover .arrow {
    opacity: 1;
}

#accordion-1 .arrow-animate {
    transform: rotate(0deg);
    opacity: 1;
}

#accordion-1 .content {
    display: none;
    padding: 0px 30px 20px 0px;
    color: #333333;
}