@charset "utf-8";

*{
    margin:0;
    padding:0;
 }

.wrap {
    overflow: hidden;
}

/* line-height: clamp(1.8rem, 1.25vw, 2.4rem);
padding: clamp(7.5px, .78125vw, 15px); */

/* =========================
common
========================= */
:root {
    --main-blue: #88c7d4;
    --main-blue-rgb: 136, 199, 212;
    --light-blue: #D1EAFF;
    --light-blue-rgb: 209, 234, 255;
    --accent: #D4AB87;
    --accent-rgb: 212, 171, 135;
    --font-black: #111;
    --font-black-rgb: 17, 17, 17;
    --font-white: #fff;
    --font-white-rgb: 255, 255, 255;
}

html {
    font-size: 62.5%;
    scroll-behavior: smooth;
}

body {
    font-family: "Noto Sans JP", sans-serif;
    font-weight: 400;
    font-size: 1.6rem;
    line-height: 2.5;
    color: var(--font-white);
    background-color: var(--font-black);
}
  
.en {
    font-family: "Montserrat", sans-serif;
    font-weight: 500;
    line-height: 1.3;
    color: var(--main-blue);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.section {
    margin-top: 10%;
    padding: 0 7%;
}

.title {
    width: fit-content;
    text-align: center;
}

.ruby {
    font-size: 1.4rem;
    line-height: 1;
    color: rgba(var(--font-white-rgb), 0.7);
}

.topic {
    font-size: 3.2rem;
    letter-spacing: 1px;
}

h2 {
    font-size: 3.6rem;
}

h3 {
    font-size: 1.8rem;
}

h4 {
    font-size: 2.4rem;
    margin-top: 2em;
}

h5 {
    font-size: 2rem;
    margin-top: 1.5em;
}

.mrg2 {
    margin-top: 2em;
}

/* COMMON SP */
@media screen and (max-width: 1200px){
    h2,
    .topic {
        font-size: 2.8rem;
    }

    h3,
    .ruby {
        font-size: 1.4rem;
    }

    h4 {
        font-size: 1.8rem;
        margin-top: 1em;
    }

    body,
    p {
        font-size: 1.4rem;
    }

    .mrg2 {
        margin-top: 1em;
    }

} /* COMMON SP 1200px */

@media screen and (max-width: 768px){
    .ruby {
        font-size: 1.2rem;
    }

} /* COMMON SP 768px */

@media screen and (max-width: 540px){
    h2 {
        font-size: 2rem;
    }

    .topic {
        font-size: 2.4rem;
    }

    .ruby {
        font-size: 1rem;
    }

    p {
        font-size: 1.2rem;
    }

} /* COMMON SP 540px */

@media screen and (max-width: 480px){
    body {
        font-size: 1.2rem;
    }

    .pcBr {
        display: none;
    }
} /* COMMON SP 480px */

@media screen and (max-width: 375px){
    .topic {
        font-size: 2rem;
    }

    h4 {
        font-size: 1.6rem;
    }
} /* COMMON SP 375px */

/* =========================
header
========================= */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  z-index: 3000;
  display: flex;
  justify-content: center;
  align-items: center;
  background: transparent;
  transition: background 0.3s, opacity 0.3s;
}

.header::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  width: 100vw;
  height: 100%;
  background: transparent;
  z-index: -1;
  pointer-events: none;
  transition: background 0.3s;
}

.header.is-bg::before {
  background: rgba(var(--main-blue-rgb), 0.5);
}

.header__inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 7% 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  color: var(--font-white);
  font-size: 2rem;
  box-sizing: border-box;
}

.header.hidden {
  opacity: 0;
  pointer-events: none;
}

#splash-logo {
    width: 20%;
}

.header__topic img {
  width: 60%;
  vertical-align: middle;
}

.nav {
  background: transparent;
  width: auto;
  height: auto;
  padding: 0;
  position: static;
  transform: translate(0);
  z-index: 1500;
}

.nav__header {
  display: none;
}

.nav__list,
.footer__list {
  font-size: 1.8rem;
  display: flex;
  letter-spacing: .15em;
  align-items: center;
}

.nav__item {
  padding-left: 3em;
}

/***** HEADER SP *****/
@media screen and (max-width: 1080px){
  .header__topic {
    font-size: 1.5rem;
    position: relative;
    z-index: 2001;
  }
  .nav__list {
    font-size: 1.3rem;
  }
} /* HEADER SP 1080px */

@media screen and (max-width: 960px){
  .nav__item {
    padding-left: 2em;
  }
} /* HEADER SP 960px */

@media screen and (max-width: 768px){
    .header__inner {
        padding: 16px 7% 0;
    }

    .header__topic {
        position: relative;
        color: var(--font-white);
        z-index: 2001;
    }

    .nav__header {
        display: flex;
        justify-content: space-between;
    }

    .header__topic img {
        width: 40%;
    }

    .nav {
        background: var(--main-blue);
        width: 100%;
        height: auto;
        padding-bottom: 40px;
        position: fixed;
        top: 0;
        left: 0;
        transform: translateX(-100%);
        transition: transform 0.4s;
        z-index: 50;
    }

    .nav.active {
        transform: translateX(0);
        z-index: 1500;
    }

    .nav__btn {
        position: relative;
        width: 36px;
        height: 36px;
        z-index: 2100;
    }

    .nav__btn span {
        display: inline-block;
        transition: all .4s;
        position: absolute;
        right: 0;
        height: 2px;
        background-color: var(--font-white);
    }

    .nav__btn span:nth-of-type(1) {
        top: 12px;
        width: 28px;
    }

    .nav__btn span:nth-of-type(2) {
        bottom: 12px;
        width: 36px;
    }

    .nav__btn.active span:nth-of-type(1) {
        top: 10px;
        transform: translateY(6px) rotate(-45deg);
        width: 100%;
        border-radius: 1px;
        background: var(--font-white);
    }

    .nav__btn.active span:nth-of-type(2) {
        transform: translateY(-6px) rotate(45deg);
        width: 100%;
        border-radius: 1px;
        background: var(--font-white);
    }

    .nav__list {
        display: block;
        font-size: 1.2rem;
        color: var(--font-white);
        text-align: center;
    }

    .nav__item {
        padding-left: 0;
        margin-top: 2em;
    }

    .nav__item:nth-of-type(1) {
        margin-top: 3em;
    }
} /* HEADER SP 768px */

@media screen and (max-width: 540px){
  .header__topic {
    font-size: 1.3rem;
    position: relative;
    z-index: 2001;
  }
} /* HEADER SP 540px */

/* ========================= 
BTN
========================= */
.btn {
    position: relative;
    display: block;
    width: 100%;
    max-width: 320px;
    height: 64px;
    line-height: 62px;
    letter-spacing: 3px;
    text-align: center;
    outline: none;
    margin-top: 3em;
    text-decoration: none;
    cursor: pointer;
}

.btn span {
    display: block;
    position: absolute;
    width: 100%;
    height: 100%;
    border: 1px solid var(--main-blue);
    transform-style: preserve-3d;
    transition: transform 0.5s ease;
}

/* BEFORE ROTATION (SURFACE) */
.rotatefront span:nth-child(1) {
    background-color: var(--font-white);
    color: var(--main-blue);
    transform: rotateX(0deg);
    transform-origin: center 50% -32px;
}

/* AFTER ROTATION (BACK) */
.rotatefront span:nth-child(2) {
    background: var(--main-blue);
    color: var(--font-white);
    transform: rotateX(90deg);
    transform-origin: center 50% -32px;
}

/* HOVER */
.rotatefront:hover span:nth-child(1) {
    transform: rotateX(-90deg);
}

.rotatefront:hover span:nth-child(2) {
    transform: rotateX(0deg);
}

/* BTN SP */
@media (max-width: 960px) {
    .btn {
        max-width: 260px;
        height: 52px;
        line-height: 50px;
        font-size: 1.4rem;
        margin-top: 2rem;
    }
    
    .rotatefront span:nth-child(1),
    .rotatefront span:nth-child(2) {
        transform-origin: center 50% -26px;
    }
} /* BTN SP 960px */

@media (max-width: 480px) {
    .btn {
        max-width: 240px;
        height: 48px;
        line-height: 46px;
        font-size: 1.3rem;
        margin-top: 1.8rem;
    }
    
    .rotatefront span:nth-child(1),
    .rotatefront span:nth-child(2) {
        transform-origin: center 50% -24px;
    }
} /* BTN SP 480px */

/* TOUCH DEVICE */
@media (hover: none) {
    .rotatefront:active span:nth-child(1) {
        transform: rotateX(-90deg);
    }
    
    .rotatefront:active span:nth-child(2) {
        transform: rotateX(0deg);
    }
}

/* =========================
main
========================= */
/* BG */
html,body {
    height: 100%;
}

#particles-js {
    position: fixed;
    z-index: 5;
    width: 100%;
    height: 100%;
}

#container {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
}

.fadeUp{
    animation-name:fadeUpAnime;
    animation-duration:3s;
    animation-fill-mode:forwards;
    opacity:0;
}
    
@keyframes fadeUpAnime{
    from {
        opacity: 0;
        transform: translateY(100px);
    }
    
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/*========= TYPING ===============*/
.TextTyping {
    line-height: 2;
    letter-spacing: .37em;
}

.TextTyping span {
	display: none;
}

.TextTyping::after {
 	content: "|";
	animation: typinganime .8s ease infinite;
}

@keyframes typinganime{
	from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/***** TYPING SP *****/
@media screen and (max-width: 1200px){
    .TextTyping {
        line-height: 1.5;
    }
} /* TYPING SP 1200px */
@media screen and (max-width: 960px){
    .TextTyping {
        font-size: 1.8rem;
        letter-spacing: .25em;
        width: 29em;
    }
} /* TYPING SP 960px */

@media screen and (max-width: 540px){
    .TextTyping {
        font-size: 1.4rem;
    }
} /* TYPING SP 540px */

/*========= EXTEND ===============*/
.bgextend {
    animation-name: bgextendAnimeBase;
    animation-duration: 1s;
    animation-fill-mode: forwards;
    position: relative;
    overflow: hidden;
    opacity: 0;
    display: inline-block;
    box-sizing: border-box;
    min-height: 1.2em;
}

@keyframes bgextendAnimeBase {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.bgappear {
    animation-name: bgextendAnimeSecond;
    animation-duration: 1s;
    animation-delay: 0.3s;
    animation-fill-mode: forwards;
    opacity: 0;
    position: relative;
    z-index: 50;
}

@keyframes bgextendAnimeSecond {
    0% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}

.bgLRextend::before {
    animation-name: bgLRextendAnime;
    animation-duration: 1s;
    animation-fill-mode: forwards;
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: var(--main-blue);
    z-index: 30;
}

@keyframes bgLRextendAnime {
    0% {
        transform-origin: left;
        transform: scaleX(0);
    }
    50% {
        transform-origin: left;
        transform: scaleX(1);
    }
    50.001% {
        transform-origin: right;
    }
    100% {
        transform-origin: right;
        transform: scaleX(0);
    }
}

/*========= CONTACT ===============*/
.section--contact {
    display: flex;
    justify-content: center;
    gap: 5em;
}

#contact .title {
    text-align: center;
}

.contact__topic {
    width: 40%;
}

#contact .title {
    width: initial;
}

#contact .btn {
    margin: 3em auto 0;
}

.contactImg {
    width: 46%;
}

/***** CONTACT SP *****/
@media screen and (max-width: 960px){
    .section--contact {
        flex-direction: column;
        align-items: center;
        gap: 2em;
        padding: 0 5%;
    }

    .contact__topic {
        width: 100%;
        max-width: 492px;
        margin: 0 auto 2em;
    }

    .contactImg {
        width: 80%;
    }

    #contact .btn {
        margin: 2em auto 0;
    }

} /* CONTACT SP 960px */

@media screen and (max-width: 425px){
    .section--contact {
        gap: 1em;
    }

    .contact__topic {
        width: 94%;
    }
} /* CONTACT SP 425px */
/* =========================
footer
========================= */
.footer__content {
    width: fit-content;
    margin: 10% auto 0;
}

.spBr {
    display: none;
}

.footer__address p,
.footer__nav02 {
    padding-top: 0.5em;
    font-size: 1.4rem;
    line-height: 1.8;
}

.footer__main {
    margin-top: 5%;
    padding: 0 7%;
}

.footer__nav {
    display: flex;
    justify-content: center;
    padding: 0 0 1em;
}

.footer .nav__item:nth-of-type(1) {
    padding-left: 0;
}

.footer__list {
    border-top: 1px solid rgba(var(--font-white-rgb), 0.5);
    padding: 1em 0 0;
    justify-content: center;
    align-items: start;
}

.footer__nav02 li {
    border-left: 1px solid rgba(var(--font-white-rgb), 0.5);
    padding: 0 1.5em;
    line-height: 1;
}

.footer__nav02 li:first-child {
    border: none;
    padding-left: 0;
}

.footer__nav02 {
    display: flex;
}

.copy {
    margin: 4em 0 2.5em;
    text-align: center;
}

/***** FOOTER SP *****/
@media screen and (max-width: 1120px){
    .footer__nav .nav__item {
        padding-left: 1em;
    }

} /* FOOTER SP 1120px */

@media screen and (max-width: 952px){
    .footer__main {
        display: flex;
        justify-content: space-evenly;
    }

    .footer__nav {
        display: block;
    }

    .footer__list {
        border-top: none;
        padding: 0;
        
    }

    .footer__nav02 {
        display: block;
    }

    .footer__nav02 li {
        padding: 0 1.5em 1em;
    }

    .footer__nav02 li:first-child {
        border-left: 1px solid rgba(var(--font-white-rgb), 0.5);
        padding: 0 1.5em 1em;
        line-height: 1;
    }

} /* FOOTER SP 952px */

@media screen and (max-width: 768px){
    .footer__nav .nav__item {
        padding-left: 0;
        margin-top: 0;
    }

    .copy {
        line-height: 1.5;
    }
} /* FOOTER SP 768px */

@media screen and (max-width: 540px){
    .footerImg {
        display: block;
        width: 96px;
        margin: 0 auto;
    }

    .footer__address {
        padding-left: 0;
        margin: 1.5em auto 0;
        max-width: 188px;
    }

    .footer__address h3 {
        font-size: 1.4rem;
    }
    
    .footer__address p {
        padding-top: 1em;
        font-size: 1.2rem;
        line-height: 1.5;
    }

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

    .footer__nav {
        order: 1;
        margin: 0 auto;
        width: 240px;
        padding: 0;
        border-bottom: 1px solid rgba(var(--font-white-rgb), 0.5);
    }

    .footer__nav {
        padding: 0 0 0.5em 0;
    }

    .footer__nav .nav__item {
        font-size: 1.5rem;
    }

    .footer__nav .footer__nav02 {
        padding-top: 1em;
    }

    .nav__item a {
        padding: 0.5em 0;
    }

    .footer__list {
        order: 2;
        display: block;
        margin: 0 auto;
        width: 240px;
        padding: 0.5em 0 0 0;
    }

    .footer__nav02 li,
    .footer__nav02 li:first-child {
        padding: 0 0 1em;
    }

    .footer__nav02 li,
    .footer__nav02 li:first-child {
        border: none;
    }

    .copy {
        line-height: 1.5;
    }

    .spBr {
        display: block;
    }

} /* FOOTER SP 540px */

/* =========================
LOWER PAGE
========================= */
/*========= VISUAL ===============*/
.visual {
    position: relative;
    background: url(../images/aboutvisual.webp) center / cover;
    min-height: 500px;
}

.visual__title {
    position: absolute;
    right: 7%;
    bottom: 10%;
}

.visual__title .TextTyping {
    color: var(--font-white);
    font-size: 1.6rem;
}

.visual .topic {
    color: var(--font-white);
    line-height: 1;
}

/***** VISUAL SP *****/
@media screen and (max-width: 960px) {
    .visual__title {
        position: absolute;
        right: 50%;
        transform: translateX(50%);
        text-align: center;
    }
} /* VISUAL SP 960px */

@media screen and (max-width: 768px){
    .visual {
        background: url(../images/aboutvisual_sp.webp) center / cover;
    }

    .visual__title .TextTyping {
        font-size: 1.4rem;
        padding-left: 0.4em;
    }
} /* VISUAL SP 768px */

@media screen and (max-width: 480px){
    .visual .topic {
        font-size: 2.8rem;
    }

} /* VISUAL SP 480px */

@media screen and (max-width: 375px){
    .visual .topic {
        font-size: 2.2rem;
    }

} /* VISUAL SP 375px */