@charset "UTF-8";
/* ベースのスタイル
--------------------------------------------------------- */
html {
    font-size: 100%;
}
body {
    font-family: "Noto Serif JP", serif;
    line-height: 1.75;
    color: #fff;
}
@media (max-width: 767px) {
    body {
        font-size: 80%;
    }
}
ul {
    list-style: none;
}
a {
    color: rgb(255, 255, 255, 1);
    text-decoration: none;
    cursor: pointer;
}
img {
    max-width: 100%;
    height: auto;
    vertical-align: bottom;
}
/* 共通
--------------------------------------------------------- */
/* フォントウェイト */
.color {
    color: 808080, #16336E;
}
/* フォントファミリー */
.lato {
    font-family: "Lato", sans-serif;
}
/* 大文字 */
.uppercase {
    text-transform: uppercase;
}
/* flex中央寄せ */ 
.flex {
    display: flex;
    justify-content: center;
    align-items: center;
}
/* セクション */
#about, #service, #works, #contact {
    padding: 5rem 0;
}
@media (min-width: 768px) {
    #about, #works, #contact {
        padding: 6.5rem 0;
    }
}
/* コンテナ */
.container {
    position: relative;
    max-width: 62.5rem;
    margin: 0 auto;
    padding: 0 1.5rem;
}
@media (min-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
}
/* セクションタイトル */
.section-title {
    position: relative;
    display: flex;
    flex-direction: column;
    margin-bottom: 3.5rem;
    font-weight: 400;
    letter-spacing: .125em;
    line-height: 1.5;
    text-align: center;
}
.section-title::before {
    content: "";
    position: absolute;
    top: 1rem;
    left: 50%;
    transform: translateX(-50%);
    display: inline-block;
    width: 11rem;
    height: .325rem;
    background-color: rgb(0, 0, 0, 1);
}
.section-title-en {
    position: relative;
    font-size: 1.5rem;
}
.section-title-ja {
    font-size: .8rem;
}
@media (min-width: 768px) {
    .section-title {
    margin-bottom: 5.25rem;
    }
    .section-title::before {
        top: 1.6rem;
        width: 16rem;
    }
    .section-title-en {
        font-size: 2.25rem;
    }
    .section-title-ja {
        font-size: 1rem;
    }
}
/* セクションボタン */
.section-btn {
    position: relative;
    display: block;
    width: 16rem;
    height: 3rem;
    line-height: 3rem;
    margin: 0 auto;
    border: .062rem solid #fff;
    text-align: center;
}
.section-btn::after {
    font-family: "bootstrap-icons";
    content: "\F285";
    position: absolute;
    right: 1rem;
    top: calc(50% - 1.45rem);
    transition: right .15s;
}
.section-btn:hover {
    color: #fff;
    border-color: #000;
    background-color: #000;
}
.section-btn:hover::after {
    right: .8rem;
}
@media (min-width: 768px) {
    .section-btn {
        width: 20rem;
        height: 3.125rem;
        line-height: 3.125rem;
    }
}
/* フェードイン */
.fadein {
    opacity: 0;
}
/* ヘッダー
--------------------------------------------------------- */
#header {
    z-index: 20;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    max-width: 62.5rem;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 1rem 1rem 0;
    /* background-color: rgba(255, 255, 255, .35); */
}
.header {
    opacity: 0;
}
/* ヘッダーロゴ */
a.header-logo {
    max-width: 2rem;
    transition: all .25s ease;
}
a.header-logo:hover {
    box-shadow: 4px 4px 10px rgba(0, 0, 0, .35);
}
@media (min-width: 768px) {
    a.header-logo {
        max-width: 2.5rem;
    }
}
/* ヘッダーナビゲーション */
.header-nav-container {
    display: flex;
}
.header-nav-first > ul a {
    color: #fff;
}
.header-nav-second > ul a {
    color: rgb(255, 255, 255, 1);
}
@media (max-width: 767px) {
    .header-nav-first {
        z-index: -1;
        position: fixed;
        top: 0;
        right: 0;
        width: 100vw;
        height: 100vh;
        padding: 8rem 0;
        background: linear-gradient(180deg, #000 0%, #000 10%, rgba(0, 0, 0, 0.5) 100%);
        box-shadow: 0rem 1rem 1.25rem 0.5rem rgba(0, 0, 0, 0.5);
        visibility: hidden;
    }
    .header-nav-first > ul {
        text-align: center;
        font-size: 1.2rem;
    }
    .header-nav-first > ul > li:not(:last-child) {
        margin-bottom: 2.5rem;
    }
    .header-nav-first > ul a:hover {
        color: gray;
    }
    
}
@media (min-width: 768px) {
    .header-nav-container {
        align-items: center;
        column-gap: 2rem;
    }
    .header-nav-first > ul {
        display: flex;
        column-gap: 1.5rem;
        font-size: 1rem;
    }
    .header-nav-first > ul a {
        position: relative;
        transition: opacity .25s ease-in-out;
        color: rgb(255, 255, 255, 1);
    }
    .header-nav-first > ul a::before {
        content: "";
        position: absolute;
        inset: 105% auto auto 0;
        display: block;
        width: 100%;
        height: .125rem;
        background-color: rgb(255, 255, 255, 1);
        scale: 0 1;
        transition: scale .25s ease-in-out;
    }
    .header-nav-first > ul a:hover::before {
        scale: 1;
    }
    .header-nav-first > ul a:hover {
        opacity: .65;
    }
}
.header-nav-second > ul {
    display: flex;
    column-gap: 1rem;
    font-size: 1.35rem;
}
.header-nav-second > ul a {
    transition: opacity .25s ease-in-out;
}
.header-nav-second > ul a:hover {
    opacity: .5;
}
@media (min-width: 768px) {
    .header-nav-second > ul {
        column-gap: 1.5rem;
        font-size: 1.65rem;
    }
}
/* ハンバーガーメニュー */
@media (max-width: 767px) {
    .hamburger-menu {
        right: -100%;
        visibility: hidden;
        transition: all .8s ease;
    }
    .hamburger-menu-open {
        right: 0;
        visibility: visible;
    }
}
/* ハンバーガーボタン */
#hamburger-btn {
    z-index: 30;
    position: fixed;
    right: 1rem;
    bottom: 1rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    row-gap: .25rem;
    width: 2.25rem;
    height: 2.25rem;
    border: .062rem solid #fff;
    border-radius: 50%;
    transition: opacity .15s ease-in-out, border-color .3s ease-in-out;
}
#hamburger-btn:hover {
    opacity: .5;
}
.hamburger-btn-bar {
    display: inline-block;
    width: 1rem;
    height: .062rem;
    background-color: #fff;
    transition: background-color .3s ease-in-out;
}
/*
#hamburger-btn.hamburger-btn-active {
    border-color: gray;
}
#hamburger-btn.hamburger-btn-active .hamburger-btn-bar {
    background-color: gray;
}
*/
@media (min-width: 768px) {
    #hamburger-btn {
        display: none;
    }
}

/* メイン
--------------------------------------------------------- */
/* hero
--------------------------------------- */
#hero {
    position: relative;
    width: 100%;
    height: 100vh;
    margin-bottom: 3rem;
}
.hero-title {
    position: absolute;
    z-index: 2;
    top: 50%;
    left: 50%;
    translate: -50% -55%;
    width: 100%;
    line-height: 1.2;
    text-align: center;
    opacity: 0;
    color: rgb(255, 255, 255, 1);
}
.hero-title-en > span {
    display: block;
    font-size: clamp(2rem, 9vw, 5rem);
    letter-spacing: .2em;
}
.hero-title-ja {
    font-size: clamp(.7rem, 2.5vw, 1.2rem);
    letter-spacing: .5em;
}

.hero-bottom {
    position: absolute;
    bottom: -3rem;
    width: 100%;
    height: 60%;
    background: linear-gradient(0deg, rgba(22, 51, 110, .8) 0, rgba(22, 51, 110, .5) 50%, rgba(22, 51, 110, 0) 100%);
}

.scroll-down {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    font-size: .7rem;
    letter-spacing: .15em;
    opacity: 0;
    transition: opacity ease 1s;
}
.scroll-down:hover {
    opacity: .5;
}
.mouse-icon {
    width: 25px;
    height: 44px;
    border: 1px solid #fff;
    border-radius: 20px;
    position: relative;
    margin-inline: auto;
    margin-bottom: 6px;
}
.mouse-icon::before {
    content: "";
    width: 1px;
    height: 8px;
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    background-color: yellow;
    border-radius: 2px;
    animation: scroll_down 2s infinite;
}

@keyframes scroll_down {
    0% {
        opacity: 1;
        transform: translate(-50%, 0);
    }
    100% {
        opacity: 0;
        transform: translate(-50%, 14px);
    }
}

.video_bg {
    z-index: -5;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}
.video_bg > video {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    min-width: 100%;
    min-height: 100%;
    object-fit: cover;
}
@media (max-width: 767px) {
    .scroll-down {
        position: absolute;
        bottom: 3rem;
    }
    .hero-title {
        translate: -50% -65%;
    }
}
/* about
--------------------------------------- */
#about {
    padding: 6.5rem 0 5rem;
    background: linear-gradient(180deg, rgba(22, 51, 110, .8) 0, rgba(22, 51, 110, .8) 85%, rgba(22, 51, 110, 0) 100%);
}
@media (min-width: 768px) {
    #about {
        padding: 7.5rem 0 6.5rem;
    }
}
.about-title {
    z-index: 3;
    position: relative;
    display: flex;
    flex-direction: column;
    margin-bottom: 3.7rem;
    font-weight: 400;
    letter-spacing: .125em;
    line-height: 1.5;
}
.about-title-en {
    position: relative;
    font-size: 1.5rem;
}
.about-title-ja {
    font-size: .8rem;
}
.about-box {
    z-index: 3;
    position: relative;
    margin-bottom: 2.25rem;
    padding: 0 .5rem;
    text-align: justify;
}
.about-name {
    margin-bottom: 1.25rem;
    font-size: 1.25rem;
    letter-spacing: .15em;
}
.about-intro {
    margin-bottom: 1.25rem;
}
.about-intro p:first-child {
    margin-bottom: 1rem;
}
.about-timeline {
    border-top: 1px solid #fff;
    padding-top: 1rem;
}
.about-timeline ul li {
    display: flex;
}
.about-timeline ul li span:first-child {
    display: inline-block;
    width: 2.25rem;
}
.view-more-btn {
    z-index: 3;
    position: relative;
    display: inline-block;
    width: 10rem;
    padding-bottom: .75rem;
    font-size: .75rem;
    letter-spacing: .15em;
    line-height: 1;
    color: #fff;
    border-bottom: 1px solid #fff;
    transition: all .25s;
}
.view-more-btn:hover {
    color: #000;
    border-color: #000;
    transform: translateX(4px);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, .35);
}
.view-more-btn::after {
    content: "";
    position: absolute;
    right: -1px;
    bottom: 4px;
    display: inline-block;
    width: 16px;
    height: 1px;
    border-bottom: 1px solid #fff;
    transform: rotate(30deg);
    transition: all .25s;
}
.view-more-btn:hover::after {
    border-color: #000;
}
.about-img {
    position: absolute;
    top: -1.5rem;
    right: 1.5rem;
    width: 45%;
    max-width: 8.25rem;
}
@media (min-width: 480px) {
    .about-img {
        top: 0;
        max-width: 17.5rem;
    }
    .about-box {
        width: 70%;
    }
}
@media (min-width: 768px) {
    .about-title {
        margin-bottom: 5.25rem;
    }
    .about-title::before {
        top: 1.6rem;
        width: 16rem;
    }
    .about-title-en {
        font-size: 2.25rem;
    }   
    .about-title-ja {
        font-size: 1rem;
    }
    .about-box {
        margin-bottom: 3.25rem;
        padding: 0 1rem;
        font-size: 1rem;
    }
    .about-name {
        margin-bottom: 1.5rem;
        font-size: 1.75rem;
    }
    .about-intro {
        margin-bottom: 1.5rem;
    }
    .about-timeline {
        padding-top: 1.25rem;
    }
    .about-timeline ul li span:first-child {
        display: inline-block;
        width: 3rem;
    }
    .view-more-btn {
        font-size: .875rem;
        width: 11.5rem;
    }
    .view-more-btn::after {
        bottom: 5px;
        width: 20px;
    }
    .about-img {
        top: 50%;
        transform: translateY(-50%);
        max-width: 25.5rem;
    }
}
/* service
--------------------------------------- */
#service {
    /* background-color: #808080; */
}
.service-box {
    display: flex;
    flex-wrap: wrap;
    flex-direction: column;
    row-gap: 2rem;
    margin-bottom: 2.5rem;
    word-break: break-all;
}
.service-item {
    padding: 1.5rem 1rem;
    background-color: rgba(0, 0, 0, .8);
}
.service-item-heading {
    margin-bottom: 1rem;
    text-align: center;
    line-height: 1;
}
.service-item-heading > h3 {
    font-size: 1.1rem;
}
.service-item-heading > img {
    max-width: 4rem;
    margin-bottom: 1rem;
}
.service-item > p {
    font-size: .75rem;
}
@media (min-width: 768px) {
    .service-box {
        flex-direction: row;
        justify-content: space-between;
        margin-bottom: 3.75rem;
    }
    .service-item {
        width: 32%;
    }
    .service-item-heading {
        margin-bottom: 1.5rem;
    }
    .service-item-heading > h3 {
        font-size: 1.2rem;
    }
    .service-item-heading > img {
        margin-bottom: 1.5rem;
    }
    .service-item > p {
        font-size: .875rem;
    }
}
/* works
--------------------------------------- */
#works {
    background: linear-gradient(0deg, rgba(22, 51, 110, 0) 0, rgba(22, 51, 110, .8) 25%, rgba(22, 51, 110, .8) 75%, rgba(22, 51, 110, 0) 100%);
}
.works-list {
    display: flex;
    flex-wrap: wrap;
    column-gap: 1.5rem;
    row-gap: 2.25rem;
    margin: 0 auto;
    margin-bottom: 2.5rem;
}
.works-item {
    position: relative;
    width: calc((100% - 1.5rem) / 2);
    overflow: hidden;
}
.works-item > a {
    display: inline-block;
}
.works-item a img {
    width: 100%;
    transition: all .35s;
}
.works-item > a:hover > img {
    filter: blur(2px);
    transform: scale(1.05);
}
.works-item-title {
    position: absolute;
    top: 50%;
    transform: translateY(-60%);
    width: 100%;
    text-align: center;
    font-size: 1.2rem;
}
.works-item-date {
    right: .75rem;
    bottom: .15rem;
    position: absolute;
    font-size: .7rem;
}
@media (max-width: 767px) {
    .works-list {
        max-width: 540px;
    }
}
@media (min-width: 768px) {
    .works-list {
        column-gap: 2.5rem;
        row-gap: 3.25rem;
        margin-bottom: 3.75rem;
    }
    .works-item {
        width: calc((100% - 5rem) / 3);
    }
    .works-item-title {
        font-size: 1.85rem;
    }
    .works-item-date {
        font-size: 1rem;
    }
}
/* contact
--------------------------------------- */
#contact {
    position: relative;
    padding: 5rem 0 7.5rem;
    /* background-color: #808080; */
}
.contact-text {
    margin-bottom: 2.5rem;
    line-height: 1.75;
    text-align: center;
}
@media (min-width: 480px) {
    .contact-text br {
        display: none;
    }
}
@media (min-width: 768px) {
    #contact {
        padding: 6.5rem 0 9.75rem; 
    }
    .contact-text {
        margin-bottom: 3.75rem;
    }
}

#scrollArrow {
    position: absolute;
    bottom: 1rem;
    right: 50%;
    transform: translateX(50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    opacity: .75;
    transition: opacity .25s;
}
#scrollArrow:hover {
    opacity: 1;
}
#scrollArrow > img {
    max-width: 1.25rem;
}
.scrollArrow_label {
    margin-top: .375rem;
    font-size: .75rem;
    letter-spacing: .1em;
}
/* フッター
--------------------------------------------------------- */
#footer {
    position: relative;
    background-color: #fff;
}
.footer-nav {
    text-align: center;
}
.footer-nav > ul {
    display: flex;
    flex-wrap: wrap;
    gap: 1px;
    margin-bottom: 1px;
}
.footer-nav > ul > li {
    width: calc((100% - 1px) / 2);
    
}
.footer-nav > ul > li > a {
    display: inline-block;
    width: 100%;
    padding: 1.25rem;
    background-color: rgba(0, 0, 0, 1);
} 
.footer-nav > ul > li > a:hover {
    background-color: rgba(0, 0, 0, .7);
}
.footer-copyright {
    display: block;
    padding: 1.75rem 0;
    text-align: center;
    font-size: .75rem;
    color: #fff;
    background-color: #000;
}
@media (min-width: 768px) {
    .footer-nav > ul > li {
        width: calc((100% - 3px) / 4);
    }
    .footer-copyright {
        padding: 2.5rem 0;
        font-size: .875rem;
    }
}

/* 下層ページ about
--------------------------------------------------------- */
/* 下層ページ service
--------------------------------------------------------- */
/* 下層ページ works
--------------------------------------------------------- */
/* 下層ページ contact
--------------------------------------------------------- */
.contact-info {
    max-width: 37.5rem;
    margin: 0 auto 2rem;
}
.contact-info p {
    margin-bottom: 1rem;
}

/* フォーム */
#contact form {
    max-width: 37.5rem;
    margin: 0 auto;
    background-color: #fff;
    padding: 30px;
    font-size: .85rem;
    /* border-radius: 8px; */
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
}
.form-group {
    margin-bottom: 1.25rem;
}
.g-recaptcha {
    margin-bottom: 1.25rem;
}
.form-group label {
    display: block;
    margin-bottom: .5rem;
    font-weight: bold;
    color: #333;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
    width: calc(100% - 20px);
    padding: .625rem;
    border: 1px solid #ddd;
    /* border-radius: 5px; */
    font-size: .85rem;
}

.form-group textarea {
    resize: vertical;
}

.form-btn {
    width: 100%;
    padding: .75rem;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    color: #fff;
    background-color: #000;
    /* border-radius: .375rem; */
}
/* 下層ページ thanks
--------------------------------------------------------- */