.header {
    position: fixed;
    top: 0;
    left: 0;
    height: 112px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: white;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    padding: 0 100px;
    z-index: 1000;
}

.header__logo img {
    width: 195px;
    height: 40px;
}

.header__right {
    display: flex;
    align-items: center;
    padding-right: 150px;
}

.header__contact {
    border: 2px solid #1f286f;
    border-radius: 4px;
    padding: 13px 48px;
    margin-right: 170px;
}

.main {
    font-size: 16px;
    color: #000;
    margin-top: 112px;
}
.top-page {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    background: url(/old_assets/image/top-hero.png) no-repeat center center / cover;
    width: 100%;
    height: 80vh;
    object-fit: cover;
    object-position: center;
    box-sizing: border-box;
}

.top-left {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.top-left .above,
.top-left .under {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin: 15px;
}

.top-left .above p,
.top-left .under p {
    color: #1f286f;
    font-weight: 700;
    text-align: center;
}

.top-left .above p {
    font-size: 26px;
}

.top-left .under p {
    font-size: 30px;
}

.xlabo_logo {
    width: 480px;
    height: 96.95px;
}
.ai_study {
    width: 481.34px;
    height: 490.9px;
}

.top-right {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.line {
    width: 100%;
    height: 30px;
    background-color: #1f286f;
}

/* body */
.container-1 {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 50px 0;
}
.container-1 .container-1-left img {
    width: 400px;
    height: 80.79px;
}
.container-1 .container-1-right {
    text-align: center;
    width: 830px;
    height: 87px;
    font-size: 20px;
    font-weight: 700;
    line-height: 28.96px;
}
.container-2-left {
    position: relative;
}

.image-wrapper {
    position: relative;
    display: inline-block;
}

.image-wrapper img {
    display: block;
}

.image-wrapper .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 50%; /* 左半分に配置 */
}
.container-2 {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 0 86px 0;
}

.container-2-left-platform {
    position: relative;
    display: inline-block;
}

.image-container {
    position: relative;
}

.base-image {
    width: 100%; /* 必要に応じて調整 */
}

.overlay-image {
    position: absolute;
    top: -20px;
    left: 0;
    width: 176px;
    transform: translateY(-25%);
}

.container-2 .container-2-left-platform .base-image {
    transition: opacity 0.5s ease;
    width: 380px;
    height: 214px;
}
.container-2 .container-2-left-platform .base-image:hover {
    opacity: 0.5;
}
.container-2 .container-2-left img {
    transition: opacity 0.5s ease;
    width: 380px;
    height: 214px;
}
.container-2 .container-2-left img:hover {
    opacity: 0.5;
}
.container-2 .container-2-right {
    width: 660px;
    height: 214px;
    margin-left: 45px;
    margin-bottom: 2px;
    font-size: 18px;
    font-weight: 400;
    line-height: 28.96px;
}

.background-1 {
    background-color: #fcece099;
}
.background-1-content {
    margin: 77px 50px;
    font-size: 18px;
}
.background-2 {
    background-color: #e6f6ff;
}
.background-2-content {
    margin: 50px 50px;
    font-size: 18px;
}
.background-3 {
    background-color: #fffded;
}
.background-3-content {
    font-size: 18px;
    padding: 35px 0 35px 50px;
}
.background-3-content .background-3-content-span {
    padding-left: 20px;
}
.background-4 {
    background-color: #f6f8d8;
}
.background-4-content {
    margin: 49px 50px;
}
/* menu */
.header-menu {
    background-color: #ffffff;
    color: white;
    padding: 10px 15px;
    position: relative;
    margin-right: 20px;
    z-index: 10;
}

/* メニューアイコン */
.menu-icon {
    cursor: pointer;
    display: inline-block;
    width: 30px;
    height: 20px;
    position: relative;
    z-index: 20;
}

.menu-icon span {
    display: block;
    background-color: #1f286f;
    height: 3px;
    width: 100%;
    margin: 4px 0;
    transition: 0.3s;
}

.menu-icon.active span {
    background-color: #ffffff;
}

.menu-icon.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-icon.active span:nth-child(2) {
    opacity: 0;
}

.menu-icon.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* メニュー一覧 */
.menu-list {
    max-height: 0;
    overflow: hidden;
    background-color: #1f286f;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    z-index: 15;
    transition:
        opacity 0.5s ease,
        max-height 0.5s ease;
}

.menu-list ul {
    list-style: none;
    margin: 0;
    padding: 50px 0 0;
    text-align: center;
}

.menu-list li {
    padding: 15px 0;
    border-bottom: 1px solid #ffffff;
}

.menu-list li:last-child {
    border-bottom: none;
}

.menu-list a {
    color: white;
    text-decoration: none;
    font-size: 18px;
}

.menu-list a:hover {
    text-decoration: underline;
}

/* 表示状態のメニュー */
.menu-list.active {
    max-height: 100vh; /* 高さを全画面に設定 */
    opacity: 1; /* 表示状態 */
}

/* menu */

.small_line {
    width: 100%;
    height: 10px;
    background-color: #1f286f;
}

.contact {
    margin: 40px 0 26px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.contact .xlabo-logo-2 {
    width: 500px;
    height: 60px;
    padding-top: 60px;
    padding-bottom: 44px;
}
.contact .xlabo-logo-3 {
    width: 590px;
    height: 73px;
    padding-top: 60px;
    padding-bottom: 44px;
}

.xlabo-guidance {
    text-align: center;
    margin-bottom: 60px;
}
.xlabo-guidance .xlabo-guidance-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 10px;
}

.xlabo-guidance p {
    font-size: 18px;
    line-height: 29px;
    font-weight: 700;
}

.contact p {
    font-size: 28px;
    font-weight: 700;
    color: #1f286f;
}

.contact_button {
    margin-top: 40px;
    display: flex;
    flex-direction: row;
    gap: 70px;
}

.contact_button a {
    border: #1f286f solid 2px;
    font-size: 20px;
    color: #1f286f;
    font-weight: 900;
    padding: 20px 60px;
}

.platform {
    padding: 70px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: #f2f5f7;
}

.platform .destop {
    font-size: 28px;
    font-weight: 700;
    color: #1f286f;
}

/* .platform_img {
    margin-top: 80px;
} */

/* test */
/* * {
    box-sizing: border-box;
  } */

.platform_img {
    margin-top: 80px;
    position: relative;
    display: flex;
    justify-content: center;
    padding: 40px 0;
}

.platform_img-title {
    margin: auto;
    width: 400px;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    /* border: solid 1px red; */
}

.function-list {
    position: absolute;
    width: 400px;
    height: 400px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.function-list * {
    box-sizing: border-box;
}

.function-list-item {
    position: absolute;
    top: 50%;
    left: 50%;

    &[data-index='1'] {
        transform: translate(
            calc(cos(calc(360deg / 12 * 8)) * 450px),
            calc(sin(calc(360deg / 12 * 8)) * 194px - 200%)
        );
    }

    &[data-index='2'] {
        transform: translate(
            calc(cos(calc(360deg / 12 * 7)) * 376px),
            calc(sin(calc(360deg / 12 * 7)) * 205px - 135%)
        );
    }

    &[data-index='3'] {
        transform: translate(
            calc(cos(calc(360deg / 12 * 6)) * 424px),
            calc(sin(calc(360deg / 12 * 6)) * 200px - 150%)
        );
    }

    &[data-index='4'] {
        transform: translate(
            calc(cos(calc(360deg / 12 * 5)) * 490px),
            calc(sin(calc(360deg / 12 * 5)) * 240px - 200%)
        );
    }

    &[data-index='5'] {
        transform: translate(
            calc(cos(calc(360deg / 12 * 4)) * 650px),
            calc(sin(calc(360deg / 12 * 4)) * 242px - 185%)
        );
    }

    &[data-index='6'] {
        transform: translate(
            calc(cos(calc(360deg / 12 * 3)) * 0px - 118%),
            calc(sin(calc(360deg / 12 * 3)) * 250px - 65%)
        );
    }

    &[data-index='7'] {
        transform: translate(
            calc(cos(calc(360deg / 12 * 3)) * 0px + 18%),
            calc(sin(calc(360deg / 12 * 3)) * 250px - 65%)
        );
    }

    &[data-index='8'] {
        transform: translate(
            calc(cos(calc(360deg / 12 * 4)) * -268px),
            calc(sin(calc(360deg / 12 * 4)) * 240px - 185%)
        );
    }

    &[data-index='9'] {
        transform: translate(
            calc(cos(calc(360deg / 12 * 5)) * -272px),
            calc(sin(calc(360deg / 12 * 5)) * 240px - 200%)
        );
    }

    &[data-index='10'] {
        transform: translate(
            calc(cos(calc(360deg / 12 * 6)) * -236px),
            calc(sin(calc(360deg / 12 * 6)) * 200px - 150%)
        );
    }

    &[data-index='11'] {
        transform: translate(
            calc(cos(calc(360deg / 12 * 7)) * -156px),
            calc(sin(calc(360deg / 12 * 7)) * 206px - 135%)
        );
    }

    &[data-index='12'] {
        transform: translate(
            calc(cos(calc(360deg / 12 * 8)) * -70px),
            calc(sin(calc(360deg / 12 * 8)) * 250px - 100%)
        );
    }
}

.function-list-button {
    min-width: 190px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 40px;
    border: solid 2px #1f286f;
    background: white;
    padding: 10px 25px 15px;
    font-size: 20px;
    font-weight: 700;
    line-height: 1;
    text-decoration: none;
}

/* test */

.management_features {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 90px;
    margin: 73px auto 100px;
    width: 100%;
    background-color: #ffffff;
}

.management_features_title {
    /* margin: 70px 0; */
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.management_features_title p {
    font-size: 28px;
    font-weight: 700;
    color: #1f286f;
}

.management_features_attribute {
    display: flex;
    justify-content: space-around;
    gap: 90px;
    width: 90%;
}

.management_features_attribute:last-child::after {
    content: '';
    box-sizing: border-box;
    display: inline-block;
    width: 100%;
    max-width: 538px;
}

.block {
    display: inline-block;
    flex-direction: column;
    /* flex: 1; */
    box-sizing: border-box;
}

.attribute_title_1 {
    display: inline-block;
    padding: 10px 40px;
    border: #1f286f solid 2px;
    border-radius: 50px;
    font-size: 20px;
    font-weight: 700;
    color: #1f286f;
    margin-bottom: 25px;
}
.attribute_content_1 {
    font-size: 20px;
    font-weight: 400;
}

.attribute_title_2 {
    display: inline-block;
    padding: 10px 40px;
    border: #1f286f solid 1px;
    border-radius: 50px;
    font-size: 20px;
    font-weight: 700;
    background-color: #1f286f;
    color: white;
}
.attribute_content_2 {
    font-size: 20px;
    font-weight: 400;
    margin: 25px 0;
}

.summary {
    font-size: 20px;
    font-weight: 700;
    margin-top: 16px;
}

.problem1 {
    display: flex;
    flex-direction: column;
    background-color: #d2ecfa99;
    gap: 10px;
}

.ai_answer_img {
    display: flex;
    flex-direction: column;
}

.problem_title {
    padding-top: 30px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    /* height: 100vh; */
    width: 100%;
}

.problem_title_character_1 {
    font-size: 24px;
    font-weight: 700;
}

.problem_title_character_2 {
    font-size: 32px;
    font-weight: 700;
}

.tick {
    position: absolute;
    width: 30%;
    height: 10px;
    background-color: #1f286f;
    margin-top: 10px;
    margin-bottom: -15px;
}

.problem_title_img img {
    width: 219.81px;
    height: 166.71px;
    position: relative;
    max-width: 100%;
    height: auto;
    margin-top: 60px;
}

.exchange1 {
    display: flex;
    flex-direction: row;
    /* align-items: center; */
    justify-content: center;
    /* margin-left: 5%; */
    width: 100%;
}

.ques_an1 {
    display: flex;
    flex-direction: column;
    gap: 100px;
    margin-top: 70px;
    margin-left: 10%;
    width: 35%;
}

.destop_ai_answer_1 {
    width: 55%;
}
.destop_ai_answer_1 img {
    float: right;
    /* width: 90%; */
}
/* .exchange1_img {
  width: 25%;
} */

.question1 {
    display: flex;
    flex-direction: row;
    margin-bottom: 20px;
    gap: 10px;
    /* margin-left: 4%; */
}

.question1 p {
    background-color: #ffffff;
    padding: 19px 60px 16px 24px;
    border-radius: 20px;
}

.question1 img {
    width: 60px;
    height: 60px;
}

.answer1 {
    display: flex;
    flex-direction: row;
    gap: 10px;
    /* margin-left: 4%; */
    float: right;
}

.answer1 p {
    padding: 19px 14px 21px 24px;
    border-radius: 20px;
    background-color: #e6e6e6;
}

.answer1 img {
    width: 60px;
    height: 60px;
}

.problem2 {
    display: flex;
    flex-direction: column;
    background-color: #fcece0cc;
    padding-bottom: 80px;
}

.exchange2 {
    margin-top: 60px;
    display: flex;
    flex-direction: row;
    justify-content: center;
    gap: 100px;
}

.ques_an2 {
    display: flex;
    flex-direction: column;
    gap: 100px;
    margin-top: 70px;
    width: 35%;
}

/* .release {
  display: flex;
  flex-direction: column;
} */

.question2 {
    display: flex;
    flex-direction: row;
    margin-bottom: 20px;
    gap: 10px;
    /* margin-left: 4%; */
}

.question2 p {
    background-color: #ffffff;
    padding: 19px 60px 16px 24px;
    border-radius: 20px;
}

.question2 img {
    width: 60px;
    height: 60px;
}

.answer2 {
    display: flex;
    flex-direction: row;
    gap: 10px;
    /* margin-left: 4%; */
    float: right;
}

.answer2 p {
    padding: 19px 14px 21px 24px;
    border-radius: 20px;
    background-color: #e6e6e6;
}

.answer2 img {
    width: 60px;
    height: 60px;
}

.ai_answer_img {
    display: flex;
    flex-direction: column;
    gap: 30px;
    width: 35%;
}

.note {
    margin-top: -80px;
    display: flex;
    flex-direction: column;
    justify-content: right;
    text-align: right;
}

.problem3 {
    display: flex;
    flex-direction: column;
    background-color: #fffbda99;
    padding-bottom: 95px;
}

.ques_an3 {
    margin-bottom: 300px;
}

footer {
    background-color: #1f286f;
    /* margin-top: 10px; */
}

#company-info {
    display: flex;
    padding-bottom: 20px;
}

.logo-white-container {
    width: 45%;
    padding-right: 20px;
    padding-top: 10px;
    display: flex;
    justify-content: flex-end;
}

.logo-white {
    width: 140px;
    margin-top: 16px;
    margin-bottom: 16px;
}

.address-container {
    width: 55%;
    display: flex;
    justify-content: flex-start;
    padding-top: 24px;
    padding-left: 20px;
}

.address {
    width: 440px;
    color: #fff;
    font-size: 14px;
}

#company-info a {
    color: #ffffff;
}

#copyright {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px; /* テキスト間の間隔 */
    flex-wrap: wrap; /* 必要に応じて折り返し */
    text-align: center;
    margin: auto;
    padding: auto;
    height: 40px;
    background-color: #1f286f;
    line-height: 40px;
    font-size: 12px;
    font-weight: 400;
    padding-bottom: 20px;
}
.copyright-text {
    margin: 0 auto; /* 自動的に中央寄せ */
    color: #ffffff;
    flex-grow: 1; /* 他の要素との間隔を調整 */
    text-align: center; /* 中央に配置 */
}
#copyright .border-container {
    background-color: #1f286f;
    border: 1px solid #ffffff;
    padding: 1px 40px;
    color: #ffffff;
    white-space: nowrap; /* 文字が折り返されないように */
    font-size: 12px;
    margin-right: 30px;
}
.smartphone {
    display: none;
}
.destop {
    display: block;
}

@media (max-width: 768px) {
    .destop {
        display: none;
    }
    .smartphone {
        display: block;
    }

    .header {
        position: fixed;
        top: 0;
        left: 0;
        height: 80px;
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
        background-color: white;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        padding: 0 20px;
        z-index: 1000;
    }

    .header__logo img {
        width: 100px;
        height: 20.2px;
    }

    .header__right {
        display: flex;
        align-items: center;
        padding-right: 80px;
    }

    .header__contact {
        font-size: 12px;
        font-weight: 700;
        display: block;
        margin-right: 35px;
        border: 2px solid #1f286f;
        padding: 5px 5px;
        border-radius: 4px;
    }

    .header__nav__item__title {
        font-family: 'Noto Sans JP', sans-serif;
        padding: 5px 20px;
        text-decoration: none;
        border: 2px solid transparent;
        border-radius: 5px;
        transition: border-color 0.3s;
    }

    .main {
        font-size: 16px;
        color: #000;
        margin-top: 112px;
    }

    .top-page {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: center;
        background: url(/old_assets/image/top-hero-sp.png) no-repeat center center / cover;
        width: 100%;
        height: 55vh;
        object-fit: cover;
        object-position: center;
        box-sizing: border-box;
        margin-top: -30px;
    }
    .container-1 {
        margin: 28px 15px;
    }
    .container-1 .container-1-right {
        text-align: left;
        width: 100%;
        height: auto;
        margin-left: 0;
        font-size: 16px;
        font-weight: 700;
        line-height: 23.17px;
    }
    .container-2 {
        display: block;
        margin: 0 0 45px 0;
    }
    .container-2 .container-2-left {
        text-align: center;
    }
    .container-2 .container-2-right {
        width: 280px;
        height: auto;
        font-size: 16px;
        font-weight: 400;
        line-height: 23.17px;
        margin: auto;
    }
    .container-2-right p {
        padding: 16px 10px;
        margin-top: -5px;
    }
    .xlabo-guidance {
        padding-bottom: 30px;
    }
    .container-2-left-platform {
        display: block;
    }
    .container-2 .container-2-left-platform .base-image {
        width: 280px;
        height: 157.65px;
        margin-bottom: 0;
    }
    .overlay-image {
        width: 130px;
        margin-left: 50px;
    }

    .container-2 .image-container {
        text-align: center;
        margin: 0;
    }

    .container-2 .container-2-left img {
        width: 280px;
        height: 157.65px;
        margin-bottom: 0;
    }
    .container-2-right-span {
        padding-top: 15px;
        padding-left: 25px;
    }
    .container-2-right-span span {
        display: block;
        text-align: left;
        padding-left: 15px;
    }
    .contact p {
        font-size: 20px;
        font-weight: 700;
    }

    .xlabo-guidance {
        margin: 10px 15px 28px;
    }
    .xlabo-guidance .xlabo-guidance-title {
        text-align: center;
        font-size: 18px;
        padding-bottom: 22px;
    }
    .xlabo-guidance p {
        text-align: left;
        font-size: 14px;
        line-height: 23.17px;
        font-weight: 700;
    }
    .top-left {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }

    .top-left .above,
    .top-left .under {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 8px;
        /* margin: 15px; */
    }

    .top-left .above p,
    .top-left .under p {
        color: #1f286f;
        font-weight: 700;
        text-align: center;
    }

    .top-left .above p {
        font-size: 20px;
    }

    .top-left .under p {
        font-size: 24px;
    }

    .xlabo_logo {
        width: 300px;
        height: 61px;
    }
    .ai_peple {
        width: 320px;
        height: 43.02px;
    }
    .ai_study {
        width: 300px;
        height: 287.83px;
    }

    .top-right {
        flex: 1;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .line {
        width: 100%;
        height: 12px;
        background-color: #1f286f;
        margin-bottom: 25px;
    }

    #overview {
        scroll-margin-top: 180px;
    }
    #management_features {
        scroll-margin-top: 110px;
    }
    #problem1 {
        scroll-margin-top: 110px;
    }

    .overview {
        display: flex;
        align-items: center;
        flex-direction: column;
        margin-bottom: 50px;
    }

    .overview .title {
        display: flex;
        align-items: center;
        flex-direction: column;
    }

    .overview_title {
        display: flex;
        flex-direction: row;
        margin-bottom: 25px;
    }

    .overview_title img {
        width: 200px;
        height: 40px;
    }

    .title .overview_title p {
        font-size: 18px;
        color: #1f286f;
        font-weight: 700;
        margin-top: 15px;
    }
    .title .destop {
        display: none;
    }
    .title .smartphone {
        display: block;
        font-size: 18px;
        color: #1f286f;
        font-weight: 700;
        line-height: 26.06px;
    }

    .overview_img {
        width: 90%;
        display: flex;
        flex-direction: column;
        margin: 38px 0 45px 0;
    }

    .overview_img img {
        width: 96%;
        height: auto;
        margin-bottom: 34px;
    }

    .overview_function {
        display: flex;
        flex-direction: column;
        gap: 18px;
    }

    .overview_function .function1 {
        font-size: 15px;
        font-weight: 700;
        color: #1f286f;
        background-color: #edee97;
        border-radius: 50px;
        padding: 20px 20px;
        text-align: center;
    }

    .overview_function .function2 {
        font-size: 15px;
        font-weight: 700;
        color: #1f286f;
        background-color: #fffbda;
        border-radius: 50px;
        padding: 20px 20px;
        text-align: center;
        transform: none;
    }

    .overview_function .function3 {
        font-size: 15px;
        font-weight: 700;
        color: #1f286f;
        background-color: #d2ecfa;
        border-radius: 50px;
        padding: 20px 20px;
        text-align: center;
        transform: none;
    }

    .overview_content {
        width: 96%;
        margin: 0 2%;
        display: flex;
        flex-direction: column;
        gap: 40px;
    }

    .overview_content .title {
        align-items: normal;
        font-size: 18px;
        font-weight: 900;
        color: #1f286f;
        line-height: 34.75px;
        margin-bottom: 14px;
    }

    .overview_content .smartphone {
        display: block;
        font-size: 16px;
        font-weight: 700;
        line-height: 31.86px;
        color: #1f286f;
    }

    .small_line {
        width: 100%;
        height: 6px;
        background-color: #1f286f;
    }

    .contact {
        margin: 10px 0;
    }
    .contact .xlabo-logo-2-sp {
        width: 200px;
        height: 90px;
        padding-bottom: 32px;
    }
    .contact .xlabo-logo-3-sp {
        width: 200px;
        height: 90px;
        padding-bottom: 32px;
    }

    .contact .smartphone {
        display: block;
        font-size: 18px;
        font-weight: 700;
        color: #1f286f;
    }

    .contact_button {
        margin-top: 40px;
        display: flex;
        flex-direction: row;
        gap: 70px;
    }

    .contact_button a {
        border: #1f286f solid 2px;
        font-size: 20px;
        color: #1f286f;
        font-weight: 900;
        padding: 20px 60px;
    }

    .platform {
        padding: 32px 0;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        background-color: #f2f5f7;
    }

    .platform .smartphone {
        display: block;
        font-size: 18px;
        font-weight: 700;
        color: #1f286f;
    }

    /* .platform_img {
    margin-top: 80px;
} */

    /* test */
    /* * {
    box-sizing: border-box;
  } */

    .platform_img {
        margin-top: 13px;
        position: relative;
        display: flex;
        justify-content: center;
        padding: 0;
    }

    .platform_img-title {
        width: 373px;
        height: 373px;
        margin-bottom: 35px;
        justify-content: center;
        text-align: center;
        border-radius: 50%;
    }

    .platform_img-title img {
        width: 96%;
        height: auto;
        margin: auto;
        display: flex;
        justify-content: center;
        align-items: center;
        border-radius: 50%;
        /* border: solid 1px red; */
    }

    .platform_feature {
        display: flex;
        flex-direction: column;
        text-align: center;
        gap: 48px;
    }

    .platform_feature .platform_feature_title {
        padding: 15px 40px;
        display: inline-block;
        justify-content: center;
        text-align: center;
        font-size: 18px;
        border: solid 2px #1f286f;
        border-radius: 50px;
        background-color: #ffffff;
        color: #1f286f;
        margin-bottom: 16px;
    }

    .platform_feature .platform_feature_content {
        display: inline-block;
        text-align: left;
        font-size: 16px;
    }

    .platform_feature img {
        width: 348px;
        height: 188px;
        margin-top: 8px;
    }

    .management_features {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 48px;
        margin: 24px auto;
        width: 100%;
    }

    .management_features_title {
        display: flex;
        margin: 24px 0;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    .management_features_title p {
        font-size: 18px;
        font-weight: 700;
        color: #1f286f;
        text-align: center;
    }

    .management_features_attribute {
        display: flex;
        flex-direction: column;
        justify-content: center;
        gap: 90px;
        width: 90%;
    }

    .block {
        display: inline-block;
        flex-direction: column;
        flex: 1;
        box-sizing: border-box;
        /* justify-content: center; */
        text-align: center;
    }

    .management_features_attribute .block img {
        width: 96%;
        height: auto;
    }

    .attribute_title_1 {
        display: inline-block;
        padding: 10px 40px;
        border: #1f286f solid 2px;
        border-radius: 50px;
        font-size: 20px;
        font-weight: 700;
        color: #1f286f;
        margin-bottom: 25px;
    }
    .attribute_content_1 {
        font-size: 15px;
        font-weight: 400;
        text-align: left;
    }

    .attribute_title_2 {
        display: inline-block;
        padding: 10px 40px;
        border: #1f286f solid 1px;
        border-radius: 50px;
        font-size: 16px;
        font-weight: 700;
        background-color: #1f286f;
        color: white;
    }
    .attribute_content_2 {
        font-size: 15px;
        font-weight: 400;
        margin: 25px 0;
        text-align: left;
    }

    .summary {
        font-size: 15px;
        font-weight: 700;
        margin-top: 16px;
        text-align: left;
    }

    .problem1 {
        display: flex;
        flex-direction: column;
        background-color: #d2ecfa99;
        gap: 10px;
    }

    .ai_answer_img {
        display: flex;
        flex-direction: column;
    }

    .problem_title {
        padding-top: 30px;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        /* height: 100vh; */
        width: 100%;
    }

    .problem_title_character {
        display: flex;
        flex-direction: column;
        text-align: center;
        justify-content: end;
    }

    .problem_title_character_1 {
        font-size: 16px;
        font-weight: 700;
        text-align: center;
    }

    .problem_title_character_2 {
        font-size: 24px;
        font-weight: 700;
        text-align: center;
    }

    .tick {
        display: flex;
        width: 70%;
        height: 4px;
        background-color: #1f286f;
        text-align: center;
        justify-content: center;
        /* margin: 5px auto 12px; */
    }

    .problem_title_img img {
        width: 160px;
        height: 121px;
        /* position: relative; */
        margin: 25px auto;
    }

    .exchange1 {
        display: flex;
        flex-direction: column;
        /* align-items: center; */
        justify-content: center;
    }

    .ques_an1 {
        display: flex;
        flex-direction: column;
        gap: 28px;
        margin-top: 10px;
        width: 100%;
    }

    .question1 {
        display: flex;
        flex-direction: row;
        margin-bottom: 20px;
        gap: 10px;
    }

    .question1 p {
        background-color: #ffffff;
        font-weight: 400;
        padding: 15px 23px 16px 24px;
        border-radius: 20px;
    }

    .question1 img {
        width: 50px;
        height: 50px;
    }

    .answer1 {
        display: flex;
        flex-direction: row;
        gap: 10px;
    }

    .answer1 p {
        padding: 19px 14px 21px 24px;
        border-radius: 20px;
        background-color: #e6e6e6;
    }

    .answer1 img {
        width: 50px;
        height: 50px;
    }

    .exchange1_img {
        width: 96%;
        text-align: center;
        margin-bottom: 23px;
    }

    .exchange1_img_1 img {
        display: inline-block;
        width: 100px;
        height: 79px;
        transform: translateY(50px);
        position: relative;
        z-index: 2;
    }

    .exchange1_img_content p {
        display: inline-block;
        border: solid 2px #1f286f;
        font-size: 20px;
        color: #1f286f;
        font-weight: 700;
        padding: 19px 9px 20px 12px;
        transform: translateY(20px);
        background-color: #ffffff;
        position: relative;
        z-index: 1;
    }

    .problem2 {
        display: flex;
        flex-direction: column;
        background-color: #fcece0cc;
        padding: 0;
    }

    .exchange2 {
        display: flex;
        flex-direction: column;
        justify-content: center;
        gap: 10px;
        margin-top: 0;
        padding-top: 0;
    }

    .ques_an2 {
        display: flex;
        flex-direction: column;
        gap: 35px;
        margin-top: 0;
        width: 100%;
    }

    .question2 {
        display: flex;
        flex-direction: row;
        margin-bottom: 20px;
        gap: 10px;
    }

    .question2 p {
        background-color: #ffffff;
        padding: 15px 23px 17px 24px;
        border-radius: 20px;
    }

    .question2 img {
        width: 50px;
        height: 50px;
    }

    .answer2 {
        display: flex;
        flex-direction: row;
        gap: 10px;
    }

    .answer2 p {
        padding: 18px 12px 18px 18px;
        border-radius: 20px;
        background-color: #e6e6e6;
    }

    .ai_answer_img_exchange2_1,
    .ai_answer_img_exchange2_2 {
        width: 96%;
        margin: 17px 2% 0 2%;
        height: auto;
    }

    .note {
        margin-top: 8px;
        display: flex;
        flex-direction: column;
        justify-content: right;
        text-align: right;
    }

    .problem3 {
        display: flex;
        flex-direction: column;
        background-color: #fffbda99;
        padding-bottom: 0px;
    }

    .ques_an3 {
        margin-bottom: 0px;
    }

    .ai_answer_img_smartphone img {
        width: 96%;
        height: auto;
        margin: 20px 2%;
    }

    footer {
        background-color: #1f286f;
        /* margin-top: 10px; */
        text-align: center;
    }

    #company-info {
        display: flex;
        flex-direction: column;
        padding-bottom: 20px;
        text-align: center;
    }

    .logo-white-container {
        text-align: center;
        display: flex;
        margin: auto;
        padding: auto;
    }

    .logo-white {
        width: 140px;
        margin-top: 16px;
        margin-bottom: 16px;
    }

    .address-container {
        width: 80%;
        display: flex;
        text-align: left;
        margin: auto;
        padding: auto;
    }

    .address {
        width: 440px;
        color: #fff;
        font-size: 14px;
    }

    #company-info a {
        color: #ffffff;
    }

    #copyright {
        text-align: center;
        margin: auto;
        padding: auto;
        height: 40px;
        background-color: #1f286f;
        color: #ffffff;
        line-height: 40px;
        font-size: 12px;
        font-weight: 400;
    }
    #copyright {
        /* 上下レイアウトに切り替え */
    }

    .copyright-text {
        margin-bottom: 10px; /* 下の要素との間隔を調整 */
    }

    .border-container {
        display: inline-block; /* 必要に応じて中央揃え */
        margin: 0 auto;
        background-color: #1f286f;
        border: 1px solid #ffffff;
        padding: 5px 40px;
        color: #ffffff;
        white-space: nowrap; /* 文字が折り返されないように */
        font-size: 12px;
        margin-bottom: 20px;
    }
}