@charset "UTF-8";
/*!
global > color
------------------------------
*/
:root {
  --color-font-base: #333;
  --color-font-gray: #888;
  --color-font-light-gray: #aaa;
  --color-font-extra-light-gray: #ccc;
  --color-font-white: #fff;
  --color-bg-extra-black: #111;
  --color-bg-base: #ddd;
  --color-bg-gray: #888;
  --color-bg-dark-gray: #555;
  --color-bg-light-gray: #aaa;
  --color-bg-extra-light-gray: #eee;
  --color-bg-white: #fff;
  --color-bg-yellow: #f5cc02;
  --color-bg-black: #333;
  --color-border-gray: #888;
  --color-border-dark-gray: #555;
  --color-border-light-gray: #aaa;
  --color-border-black: #333;
  --color-border-white: #fff;
  --color-hover-yellow: #faea5a;
  --color-hover-white: #fff;
  --color-hover-light-gray: #ccc;
  --color-hover-black: #333;
  --color-bg-header-fixed: rgba(51, 51, 51, 0.7);
}

/*!
global > content-width
------------------------------
*/
:root {
  --width-content-s: 920px;
  --width-content: 1080px;
  --width-content-l: 1300px;
}

/*!
global > font
------------------------------
*/
:root {
  --font-family--base: "Zen Kaku Gothic New", sans-serif;
  --font-family--en: "Jost", sans-serif;
}

/*!
global > z-index
------------------------------
*/
:root {
  --z-index-loading: 1000;
  --z-index-modal: 100;
  --z-index-fixed-btn: 80;
  --z-index-header: 30;
  --z-index-menu: 10;
  --z-index-default: 1;
  --z-index-negative: -1;
}

/*!
foundation > reset
------------------------------
*/
html {
  color: #000;
  background: #fff;
}

body,
div,
dl,
dt,
dd,
ul,
ol,
li,
h1,
h2,
h3,
h4,
h5,
h6,
pre,
code,
form,
fieldset,
legend,
input,
textarea,
p,
blockquote,
th,
td {
  margin: 0;
  padding: 0;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
  width: 100%;
}

fieldset,
img {
  border: 0;
}

address,
caption,
cite,
code,
dfn,
em,
strong,
th,
var {
  font-style: normal;
  font-weight: normal;
}

ol,
ul {
  list-style: none;
}

caption,
th {
  text-align: left;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-size: 100%;
  font-weight: normal;
}

q:before,
q:after {
  content: "";
}

abbr,
acronym {
  border: 0;
  font-variant: normal;
}

sup {
  vertical-align: text-top;
}

sub {
  vertical-align: text-bottom;
}

input,
textarea,
select,
button {
  color: inherit;
  font-family: inherit;
  font-size: inherit;
  font-weight: inherit;
  line-height: inherit;
  font-size: 100%;
  border-radius: 0;
  border: none;
  -moz-appearance: none;
       appearance: none;
  -webkit-appearance: none;
  background-color: inherit;
}

input,
textarea,
select {
  font-size: 16px;
}

textarea {
  resize: vertical;
  display: block;
}

button {
  padding: 0;
  cursor: pointer;
}

legend {
  color: #000;
}

tbody {
  -webkit-text-size-adjust: 100%;
}

main {
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
}

img {
  width: 100%;
  height: auto;
  vertical-align: bottom;
}

figure,
blockquote {
  margin: 0;
}

svg {
  display: block;
}

* {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  box-sizing: border-box;
}

*::before,
*::after {
  box-sizing: border-box;
}

/*!
foundation > base
------------------------------
*/
html {
  background-color: var(--color-bg-base);
  scrollbar-gutter: stable;
}

body {
  line-height: 1.8;
  font-size: 16px;
  font-family: var(--font-family--base);
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--color-font-base);
}
@media screen and (min-width: 768px) {
  body {
    font-size: 18px;
  }
}

/*!
utility > utility
------------------------------
*/
.u-visually-hidden {
  position: absolute !important;
  white-space: nowrap !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  border: 0 !important;
  padding: 0 !important;
  clip: rect(0 0 0 0) !important;
  -webkit-clip-path: inset(50%) !important;
          clip-path: inset(50%) !important;
  margin: -1px !important;
}

.u-mtb {
  margin: 48px 0;
}
@media screen and (min-width: 768px) {
  .u-mtb {
    margin: 94px 0;
  }
}

/*!
component > button
------------------------------
*/
/* ボタン共通 */
.c-button {
  padding: 10px 20px;
  border-radius: 8px;
  border: 1px solid var(--color-border-dark-gray);
  background-color: var(--color-bg-dark-gray);
  color: var(--color-font-white);
  font-size: 20px;
  font-family: var(--font-family--en);
  font-weight: 600;
  text-transform: uppercase;
  line-height: 1.5;
}

/* スクロール連動CTAボタン */
.c-cta-button {
  display: none;
}
@media screen and (min-width: 768px) {
  .c-cta-button {
    display: none;
    flex-direction: column;
    position: fixed;
    bottom: 16px;
    right: 16px;
    width: 100px;
    height: 100px;
    border-radius: 50vh;
    border: 1px solid var(--color-border-dark-gray);
    background-color: var(--color-bg-dark-gray);
    color: var(--color-font-white);
    font-family: var(--font-family--en);
    font-size: 14px;
    line-height: 1.2;
    align-items: center;
    justify-content: center;
    gap: 6px;
    z-index: var(--z-index-fixed-btn);
    transition: background-color 0.3s ease, border 0.3s ease, color 0.3s ease;
  }
}
@media screen and (min-width: 1200px) {
  .c-cta-button {
    width: 120px;
    height: 120px;
    font-size: 18px;
    gap: 8px;
  }
}
@media screen and (min-width: 768px) {
  .c-cta-button::before {
    content: "";
    display: block;
    width: 36px;
    height: 36px;
    -webkit-mask-image: url("../img/common/icon-github.svg");
            mask-image: url("../img/common/icon-github.svg");
    -webkit-mask-size: contain;
            mask-size: contain;
    -webkit-mask-repeat: no-repeat;
            mask-repeat: no-repeat;
    -webkit-mask-position: center;
            mask-position: center;
    background-color: var(--color-font-white);
  }
}
@media screen and (min-width: 1200px) {
  .c-cta-button::before {
    width: 40px;
    height: 40px;
  }
}

.c-cta-button:hover {
  background-color: var(--color-hover-light-gray);
  border-color: var(--color-border-light-gray);
  color: var(--color-font-base);
}
.c-cta-button:hover::before {
  background-color: var(--color-font-base);
}

@media screen and (min-width: 768px) {
  .c-cta-button.is-fixed {
    display: flex;
  }
}

/*!
component > title
------------------------------
*/
/*!
component > card
------------------------------
*/
.cards-container {
  counter-reset: number;
}

.c-card {
  counter-increment: number;
  padding: 40px 24px 40px;
  border: 1px solid var(--color-border-light-gray);
  border-radius: 8px;
}
@media screen and (min-width: 768px) {
  .c-card {
    padding: 48px 56px 72px;
  }
}

.c-card-demo {
  display: grid;
  place-items: center;
}

.c-card-text-container {
  margin-bottom: 48px;
}
@media screen and (min-width: 768px) {
  .c-card-text-container {
    margin-bottom: 96px;
  }
}

.c-card-title-wrapper {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 8px;
  align-items: center;
}
@media screen and (min-width: 768px) {
  .c-card-title-wrapper {
    grid-template-columns: 50px 1fr;
    gap: 12px;
  }
}
.c-card-title-wrapper::before {
  content: counter(number, decimal-leading-zero);
  font-size: 16px;
  font-family: var(--font-family--en);
  line-height: 1;
  display: flex;
  justify-content: flex-end;
  align-items: flex-end;
  width: 32px;
  height: 32px;
  background-color: var(--color-bg-yellow);
}
@media screen and (min-width: 768px) {
  .c-card-title-wrapper::before {
    font-size: 24px;
    width: 50px;
    height: 50px;
  }
}

.c-card-title {
  font-size: 28px;
  font-family: var(--font-family--en);
  font-weight: 600;
  line-height: 1.2;
}
@media screen and (min-width: 768px) {
  .c-card-title {
    max-width: none;
    font-size: 56px;
  }
}
@media screen and (min-width: 500px) {
  .c-card-title {
    max-width: none;
  }
}

.c-card-text-content {
  margin-top: 16px;
  display: grid;
  gap: 16px;
}
@media screen and (min-width: 768px) {
  .c-card-text-content {
    margin-top: 24px;
  }
}

.c-card-text-main {
  line-height: 1.4;
  font-size: 18px;
}
@media screen and (min-width: 768px) {
  .c-card-text-main {
    font-size: 20px;
  }
}

.c-card-text-list {
  display: grid;
  gap: 8px;
  list-style: disc;
  padding-left: 1.3em;
}

.c-card-text-list-item {
  line-height: 1.6;
  letter-spacing: 0;
}
@media screen and (min-width: 768px) {
  .c-card-text-list-item {
    font-size: 16px;
  }
}

.c-card-demo-video {
  max-width: 100%;
  height: auto;
}

/*!
layout > container
------------------------------
*/
.l-container-l, .l-container, .l-container-s {
  width: 90%;
  margin: 0 auto;
}

.l-container-s {
  max-width: var(--width-content-s);
}

.l-container {
  max-width: var(--width-content);
}

.l-container-l {
  max-width: var(--width-content-l);
}

/*!
layout > header
------------------------------
*/
.header {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  z-index: var(--z-index-header);
  padding: 18px 19px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: transparent;
}
@media screen and (min-width: 768px) {
  .header {
    padding: 18px 64px;
  }
}

.header-logo-link {
  display: block;
  width: -moz-fit-content;
  width: fit-content;
}

.header-logo img {
  width: 200px;
  aspect-ratio: 1032/197;
}
@media screen and (min-width: 768px) {
  .header-logo img {
    width: 250px;
  }
}

.header-menu {
  border: none;
  background-color: inherit;
  margin: 0;
  padding: 0;
  position: fixed;
  top: 0;
  right: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  background-color: rgba(0, 0, 0, 0.8);
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
}

.header-menu::backdrop {
  display: none;
}

.header-menu-nav {
  padding-top: 150px;
  width: 100%;
  height: 100%;
}

.header-menu-list {
  padding-bottom: 120px;
}

.header-menu-list {
  display: grid;
  gap: 30px;
  align-items: center;
  justify-content: center;
}

.header-menu-item {
  color: var(--color-font-white);
}

.header-menu-link {
  display: block;
  width: 100%;
  font-family: var(--font-family--en);
  font-size: 24px;
  line-height: 1;
}
@media screen and (min-width: 768px) {
  .header-menu-link {
    font-size: 32px;
  }
}
.header-menu-link span {
  display: block;
  font-size: 14px;
  line-height: 1;
  font-family: var(--font-family--base);
}
@media screen and (min-width: 768px) {
  .header-menu-link span {
    display: inline;
    font-size: 16px;
    padding-left: 8px;
  }
}

.header-menu-open-btn,
.header-menu-close-btn {
  font-size: 18px;
  font-family: var(--font-family--en);
  text-transform: uppercase;
  padding: 8px 16px;
  background-color: var(--color-bg-white);
  border-radius: 8px;
  border: 1px solid var(--color-border-light-gray);
}
@media screen and (min-width: 768px) {
  .header-menu-open-btn,
  .header-menu-close-btn {
    font-size: 20px;
    padding: 8px 20px;
  }
}

.header-menu-close-btn {
  position: absolute;
  top: 24px;
  right: 19px;
}
@media screen and (min-width: 768px) {
  .header-menu-close-btn {
    top: 24px;
    right: 64px;
  }
}

/*!
layout > footer
------------------------------
*/
.footer {
  background-color: var(--color-bg-extra-black);
  color: var(--color-font-extra-light-gray);
  padding: 24px 24px 40px;
  text-align: right;
}
@media screen and (min-width: 768px) {
  .footer {
    padding: 24px 32px 48px;
  }
}

.footer small {
  font-size: 14px;
  font-family: var(--font-family--en);
}

/*!
layout > hover
------------------------------
*/
.header-menu-open-btn,
.header-menu-close-btn {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}
.header-menu-open-btn:hover,
.header-menu-close-btn:hover {
  background-color: var(--color-hover-black);
  color: var(--color-font-white);
  border-color: var(--color-border-white);
}

.u-header-text-hover {
  transition: color 0.3s ease;
}
.u-header-text-hover:hover {
  color: var(--color-hover-yellow);
}

.u-button-hover {
  transition: background-color 0.3s ease, color 0.3s ease;
}
.u-button-hover:hover {
  background-color: var(--color-hover-light-gray);
  color: var(--color-font-base);
}

.u-dropdown-button-hover {
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}
.u-dropdown-button-hover:hover {
  background-color: var(--color-hover-black);
  border-color: var(--color-border-black);
}
.u-dropdown-button-hover:hover::before {
  background-color: var(--color-hover-light-gray);
}

/*!
page > top > top-common
------------------------------
*/
/*!
page > top > top-kv
------------------------------
*/
.top-kv {
  height: 100vh;
  background-color: var(--color-bg-black);
  color: var(--color-font-white);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.top-kv-inner {
  display: grid;
  gap: 24px;
  margin-bottom: 56px;
}
@media screen and (min-width: 768px) {
  .top-kv-inner {
    margin-bottom: 120px;
  }
}

.top-kv-copy-title {
  font-size: 56px;
  font-family: var(--font-family--en);
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0;
}
@media screen and (min-width: 500px) {
  .top-kv-copy-title {
    font-size: 70px;
  }
}
@media screen and (min-width: 768px) {
  .top-kv-copy-title {
    font-size: 88px;
    line-height: 1.2;
  }
}
@media screen and (min-width: 1080px) {
  .top-kv-copy-title {
    font-size: 110px;
    line-height: 1.2;
  }
}

.top-kv-copy-title-item {
  overflow: hidden;
  display: inline-block;
}

.top-kv-copy-title-item span {
  display: inline-block;
}

.top-kv-copy-title-item:last-child span {
  display: inline-flex;
  align-items: baseline;
  gap: 16px;
}

.top-kv-copy-title-item:last-child span::after {
  content: "";
  display: block;
  background-image: url("../img/common/icon-js.svg");
  background-size: 100% 100%;
  background-repeat: no-repeat;
  background-position: center;
  width: 40px;
  height: 40px;
}
@media screen and (min-width: 768px) {
  .top-kv-copy-title-item:last-child span::after {
    width: 56px;
    height: 56px;
  }
}

.top-kv-copy-text {
  font-family: var(--font-family--en);
  font-size: 18px;
  font-weight: 400;
  line-height: 1.6;
}
@media screen and (min-width: 768px) {
  .top-kv-copy-text {
    font-size: 20px;
  }
}

.top-kv-text {
  font-weight: 400;
  line-height: 1;
}
@media screen and (min-width: 768px) {
  .top-kv-text {
    font-size: 16px;
  }
}

/*!
page > top > top-dropdown
------------------------------
*/
.dropdown-inner {
  position: relative;
}

.dropdown-button {
  display: block;
  width: 80px;
  height: 80px;
  border-radius: 50vh;
  border: 1px solid var(--color-border-dark-gray);
  background-color: var(--color-bg-extra-light-gray);
}
@media screen and (min-width: 768px) {
  .dropdown-button {
    width: 100px;
    height: 100px;
  }
}

.dropdown-button::before {
  content: "";
  display: block;
  width: 100%;
  height: 100%;
  -webkit-mask-image: url("../img/top/icon-astronaut.svg");
          mask-image: url("../img/top/icon-astronaut.svg");
  -webkit-mask-size: contain;
          mask-size: contain;
  -webkit-mask-repeat: no-repeat;
          mask-repeat: no-repeat;
  -webkit-mask-position: center;
          mask-position: center;
  background-color: var(--color-bg-dark-gray);
}

.dropdown-nav-menu {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) scale(0.95);
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border-gray);
  border-radius: 10px;
  margin: 0;
  padding: 0;
  opacity: 0;
  visibility: hidden;
}

.dropdown-menu-item {
  white-space: nowrap;
  color: var(--color-font-gray);
  transition: color 0.3s ease;
}
.dropdown-menu-item:hover {
  color: var(--color-font-base);
}

.dropdown-menu-item:not(:last-child) {
  border-bottom: 1px solid var(--color-border-gray);
}

.dropdown-menu-list a,
.dropdown-menu-list button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 4px 48px 8px 24px;
}

/*!
page > top > modal
------------------------------
*/
.modal-overlay {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.3);
  opacity: 0;
  visibility: hidden;
}

.modal {
  width: 100%;
  height: 100%;
  background-color: transparent;
  border: none;
}

.modal::backdrop {
  display: none;
}

.modal-contents-inner {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.modal-contents {
  background-color: var(--color-bg-white);
  padding: 46px;
  width: 90%;
  max-width: 500px;
  position: relative;
  transform: scale(0.95);
  opacity: 0;
}

.modal-close-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 30px;
  height: 30px;
  border-radius: 4px;
  background-color: var(--color-bg-base);
  cursor: pointer;
  transition: background-color 0.3s ease;
}
.modal-close-btn:hover {
  background-color: var(--color-hover-light-gray);
}

.modal-close-btn::before,
.modal-close-btn::after {
  content: "";
  display: block;
  width: 16px;
  height: 2px;
  background-color: #1f1f1f;
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  margin: auto;
}

.modal-close-btn::before {
  transform: rotate(45deg);
}

.modal-close-btn::after {
  transform: rotate(-45deg);
}

.modal-text {
  font-size: 18px;
  font-family: var(--font-family--en);
  line-height: 1.6;
}
@media screen and (min-width: 768px) {
  .modal-text {
    font-size: 20px;
  }
}

/*!
page > top > tab
------------------------------
*/
.tab-inner {
  width: 100%;
  margin: 0 auto;
}
@media screen and (min-width: 768px) {
  .tab-inner {
    padding: 0 40px;
  }
}

.tab-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  align-items: center;
}

.tab {
  width: 100%;
  padding: 8px;
  font-size: 18px;
  font-weight: 700;
  border-bottom: 3px solid var(--color-border-dark-gray);
  opacity: 0.4;
  transition: opacity 0.3s ease;
}
@media screen and (min-width: 768px) {
  .tab {
    font-size: 20px;
  }
}

.tab:hover {
  opacity: 1;
}

.tab.is-active {
  opacity: 1;
}

.tab-contents-wrapper {
  margin-top: 24px;
  display: grid;
}
@media screen and (min-width: 768px) {
  .tab-contents-wrapper {
    margin-top: 32px;
  }
}

.tab-contents {
  grid-area: 1/1;
  visibility: hidden;
  opacity: 0;
}

.tab-contents.is-active {
  visibility: visible;
  opacity: 1;
}

.tab-contents p {
  line-height: 1.6;
  letter-spacing: 0;
  font-weight: 400;
}
@media screen and (min-width: 768px) {
  .tab-contents p {
    font-size: 16px;
  }
}

/*!
page > top > top-accordion
------------------------------
*/
.accordion-inner {
  width: 100%;
  display: grid;
  gap: 24px;
}
@media screen and (min-width: 768px) {
  .accordion-inner {
    gap: 32px;
  }
}

.accordion-details {
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
}
@media screen and (min-width: 768px) {
  .accordion-details {
    padding: 0 40px;
  }
}

.accordion-summary {
  padding: 16px 36px 16px 24px;
  display: flex;
  align-items: start;
  position: relative;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-font-white);
  background-color: var(--color-bg-gray);
  cursor: pointer;
}

.accordion-summary::webkit-details-marker {
  display: none;
}

.accordion-summary::before {
  content: "Q.";
  padding-right: 8px;
  font-weight: 600;
  color: var(--color-font-white);
}

.accordion-icon {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 12px;
}

.accordion-icon span {
  content: "";
  display: block;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background-color: var(--color-font-white);
}

.accordion-icon span:nth-child(1) {
  width: 100%;
  height: 2px;
}

.accordion-icon span:nth-child(2) {
  width: 2px;
  height: 100%;
  transition: transform 0.3s ease;
}

.accordion-details.is-open .accordion-icon span:nth-child(2) {
  transform: translate(-50%, -50%) rotate(90deg);
}

.accordion-contents {
  background-color: var(--color-bg-white);
  overflow: hidden;
}

.accordion-contents-inner {
  padding: 16px 36px 16px 24px;
  font-size: 16px;
  line-height: 1.4;
  letter-spacing: 0;
  font-weight: 400;
}

/*!
page > top > github-link
------------------------------
*/
.github-link-container {
  width: -moz-fit-content;
  width: fit-content;
  margin: 80px auto;
}
@media screen and (min-width: 768px) {
  .github-link-container {
    margin: 180px auto;
  }
}

.github-link {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 240px;
  height: 240px;
}
@media screen and (min-width: 768px) {
  .github-link {
    width: 400px;
    height: 400px;
  }
}

.circular-text {
  position: absolute;
  inset: 0;
  margin: auto;
  color: var(--color-font-gray);
  width: 240px;
  height: 240px;
  animation: rotate 20s linear infinite;
}
@media screen and (min-width: 768px) {
  .circular-text {
    width: 400px;
    height: 400px;
  }
}

.circular-text text {
  font-size: 16px;
  font-family: var(--font-family--en);
  letter-spacing: 0.02em;
  fill: var(--color-font-gray);
  text-transform: uppercase;
}

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(-360deg);
  }
}
.circular-text-path {
  fill: none;
  stroke: currentColor;
  stroke-width: 1;
  opacity: 0.6;
}

.github-link-button {
  position: relative;
  z-index: 2;
  width: 166px;
  height: 166px;
  border-radius: 50vh;
  display: flex;
  gap: 8px;
  justify-content: center;
  align-items: center;
  border: 1px solid var(--color-border-dark-gray);
  background-color: var(--color-bg-dark-gray);
  color: var(--color-font-white);
  font-family: var(--font-family--en);
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}
@media screen and (min-width: 768px) {
  .github-link-button {
    width: 280px;
    height: 280px;
    gap: 10px;
    font-size: 26px;
  }
}

.github-link-button:hover {
  background-color: var(--color-hover-light-gray);
  border-color: var(--color-border-light-gray);
  color: var(--color-font-base);
}

.github-link-button::before {
  content: "";
  display: block;
  width: 30px;
  height: 30px;
  -webkit-mask-image: url("../img/common/icon-github.svg");
          mask-image: url("../img/common/icon-github.svg");
  -webkit-mask-size: contain;
          mask-size: contain;
  -webkit-mask-repeat: no-repeat;
          mask-repeat: no-repeat;
  -webkit-mask-position: center;
          mask-position: center;
  background-color: var(--color-font-white);
  transition: background-color 0.3s ease;
}
@media screen and (min-width: 768px) {
  .github-link-button::before {
    width: 44px;
    height: 44px;
  }
}

.github-link-button:hover::before {
  background-color: var(--color-hover-black);
}

/*!
page > top > auto-slider
------------------------------
*/
.auto-slider {
  padding-top: 100px;
  color: var(--color-font-white);
  background-color: var(--color-bg-extra-black);
  overflow: hidden;
  /* 表面(画像) */
  /* 裏面(テキスト)は最初から裏向きで待機 */
}
@media screen and (min-width: 768px) {
  .auto-slider {
    padding-top: 140px;
  }
}
.auto-slider .splide__slide {
  display: flex;
  justify-content: center;
}
.auto-slider .slider-card {
  position: relative;
  width: 100%;
  aspect-ratio: 4/5;
  perspective: 1000px;
  transform-style: preserve-3d;
  transition: transform 0.6s ease;
  cursor: pointer;
}
.auto-slider .slider-card.is-flipped {
  transform: rotateY(180deg);
}
.auto-slider .slider-card-front,
.auto-slider .slider-card-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform: translateZ(0);
  will-change: transform;
}
.auto-slider .slider-card-front {
  z-index: 2;
}
.auto-slider .slider-card-back {
  z-index: 1;
  transform: rotateY(180deg) translateZ(0);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: var(--color-bg-black);
  color: var(--color-font-white);
  text-align: center;
}
.auto-slider .slider-card-back p {
  font-size: 18px;
  font-family: var(--font-family--en);
  text-align: center;
}
.auto-slider .slider-card-front img {
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
     object-fit: cover;
  display: block;
}

.auto-slider-credits-container {
  margin: 32px 24px 0;
  text-align: end;
}
@media screen and (min-width: 768px) {
  .auto-slider-credits-container {
    margin: 48px 40px 0;
  }
}

.auto-slider-credits-title {
  font-size: 28px;
  font-family: var(--font-family--en);
  text-align: end;
}
@media screen and (min-width: 768px) {
  .auto-slider-credits-title {
    font-size: 32px;
  }
}

.auto-slider-credits-item {
  font-size: 14px;
  font-family: var(--font-family--en);
  color: var(--color-font-light-gray);
  line-height: 1.4;
}
@media screen and (min-width: 768px) {
  .auto-slider-credits-item {
    font-size: 16px;
  }
}

/*!
page > top > sticky-header
------------------------------
*/
.sticky-header-image {
  width: 100%;
  aspect-ratio: 1330/754;
  -o-object-fit: cover;
     object-fit: cover;
  -o-object-position: center;
     object-position: center;
}

/*!
page > top > loading
------------------------------
*/
body {
  opacity: 0;
}

.loading {
  position: fixed;
  inset: 0;
  background-color: var(--color-bg-black);
  z-index: var(--z-index-loading);
  display: grid;
  place-items: center;
}

.loading-text {
  grid-area: 1/1;
  display: flex;
  gap: 8px;
}
@media screen and (min-width: 768px) {
  .loading-text {
    gap: 16px;
  }
}

.loading-icon {
  grid-area: 1/1;
  z-index: 1;
}

.loading-text-item {
  display: inline-block;
  font-size: 40px;
  color: var(--color-font-white);
  font-family: var(--font-family--en);
  text-transform: uppercase;
}
@media screen and (min-width: 768px) {
  .loading-text-item {
    font-size: 56px;
  }
}

.loading-icon-img {
  width: 40px;
  aspect-ratio: 1/1;
}
@media screen and (min-width: 768px) {
  .loading-icon-img {
    width: 56px;
  }
}/*# sourceMappingURL=style.css.map */