:root {
    --page-gap: 7rem;
    --transition-all: all 0.2s ease-in-out;
}

html,
body {
    overflow: hidden;
}

h1 {
    margin: 0;
    text-indent: -9999px;
    position: absolute;
}

#page {
    display: flex;
    width: 100%;
    height: 100%;
    overflow: hidden;
    gap: var(--page-gap);
    padding-right: 5rem;
}

.left {
    position: relative;
    width: 43%;
    height: 100%;
}

.intro_img__wrapper {
    position: relative;
}

.intro_img_mobile {
    display: none;
}

#mask_img {
    position: absolute;
    right: -1%;
    top: 0;
    width: 100%;
    height: 101%;
    pointer-events: none;
}

#mask_img_mobile {
    display: none;
}

.intro_img {
    width: 100%;
    height: auto;
}

.right {
    padding-top: 5rem;
    flex: 1 1 auto;
}

header {
    position: relative;
    display: flex;
    gap: 5rem;
    justify-content: space-between;
    margin-bottom: 8rem;
}

.logo_wrapper {
    position: absolute;
    transform: translateX(calc(-100% - var(--page-gap)));
}

.logo {
    width: 218px;
    height: auto;
}

.headline_wrapper {
    font-size: 2rem;
}

.headline_red {
    color: var(--color-red);
}

.subline {
    color: var(--color-text);
    font-weight: 700;
}

.ah_logo_wrapper {
    position: relative;
}

.ah_logo {
    width: 190px;
    height: auto;
}

.ah_logo_text {
    position: absolute;
    top: -10px;
    right: 67px;
    font-size: 1.3rem;
    color: #8D8C8C;
}

iframe {
    max-width: 1200px;
    margin-left: -48px;
    width: calc(100% + 48px);
}

footer {
    display: flex;
    position: fixed;
    left: 0;
    bottom: 0;
}

footer::after {
    content: "";
    display: block;
    width: 82px;
    height: 57px;
}

.footer_wrapper {
    background-color: rgba(255, 255, 255, 0.9);
    padding: 1rem 0 1rem 3rem
}

.nav_footer {
    height: 100%;
    display: flex;
    align-items: center;
    gap: 3rem;
    list-style-type: none;
    padding: 0;
    margin: 0;
}

.nav_footer a {
    color: var(--color-text);
    transition: var(--transition-all);
}

.nav_footer a:hover {
    color: var(--color-red);
}

@media screen and (max-width: 1540px) {
    :root {
        --page-gap: 5rem;
    }

    .logo {
        width: 180px;
    }

    .ah_logo {
        width: 170px;
    }
    .ah_logo_text {
        right: 53px;
    }
}

@media screen and (max-width: 1130px) {
    :root {
        --page-gap: 2rem;
    }

    body {
        overflow-y: auto;
    }

    #page {
        flex-flow: column nowrap;
        overflow: auto;
        padding: 0;
    }

    header {
        margin-bottom: 6rem;
    }

    .left {
        width: 100%;
        height: auto;
    }

    .intro_img {
        display: none;
    }

    .intro_img_mobile {
        display: block;
    }

    #mask_img {
        display: none;
    }

    #mask_img_mobile {
        display: block;
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
        pointer-events: none;
    }

    .logo_wrapper {
        position: relative;
        transform: translateX(0);
    }

    .right {
        padding: 0 5rem;
    }

    .logo_headline__wrapper {
        display: flex;
        gap: 3rem;
    }

    .logo_wrapper,
    .ah_logo_wrapper,
    .ah_logo_container {
        flex: 1 0 auto;
    }

    .ah_logo_wrapper {
        text-align: right;
    }

    iframe {
        height: 1000px;
    }

    footer {
        position: relative;
        padding: 0 5rem;
    }

    .footer_wrapper {
        padding: 1rem 0 3rem 0;
        background: none;
    }

    footer::after {
        width: 0;
        height: 0;
        background: none;
    }

    .nav_footer a {
        color:var(--color-grey);
    }

}

@media screen and (max-width: 760px) {
    .right,
    footer {
        padding: 0 3rem;
    }

    .footer_wrapper {
        padding: 1rem 0 1rem 0;
    }

    .logo_headline__wrapper {
        flex-flow: column nowrap;
        gap: 1rem;
    }
}

@media screen and (max-width: 660px) {
    .logo {
        width: 160px;
    }

    .ah_logo {
        width: 150px;
    }

    .ah_logo_text {
        right: 52px;
        font-size: 1.1rem;
    }

    .headline_wrapper {
        font-size: 1.8rem;
    }
}

@media screen and (max-width: 480px) {

    .right,
    footer {
        padding: 0 2rem;
    }

    header {
        flex-flow: column nowrap;
        gap: 3rem;
        margin-bottom: 5rem;
    }

    .logo_wrapper {
        text-align: center;
    }

    .ah_logo_container {
        display: flex;
        justify-content: center;
    }

    .ah_logo_wrapper {
        flex: 0 0 auto;
    }

    .headline_wrapper {
        text-align: center;
    }
}