/* ---------------------------
  A Modern CSS Reset
----------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
}

body, h1, h2, h3, h4, p, figure, blockquote, dl, dd, ul, ol {
  margin: 0;
}

ul {
  padding: 0;
}

ul, ol {
  list-style: none;
}

body {
  min-height: 100vh;
  text-rendering: optimizeSpeed;
  line-height: 1.5;
}

a:not([class]) {
  text-decoration-skip-ink: auto;
}

img, picture {
  max-width: 100%;
  display: block;
}

input, button, textarea, select {
  font: inherit;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
/* ---------------------------
  variable
----------------------------- */
:root {
  --fontMainColor: #EEEEEE;
  --fontSubColor: #777777;
  --borderMainColor: #eeeeee;
  --borderSubColor: #cccccc;
  --mainFont: "Noto Sans JP", sans-serif;
}

/* ---------------------------
  mixin
----------------------------- */
/* ---------------------------
  function
----------------------------- */
/* ---------------------------
  base
----------------------------- */
html {
  height: 100%;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body {
  height: 100%;
  color: var(--fontMainColor);
  background-color: #1D2022;
  font-size: 16px;
  line-height: 1.75;
  font-family: var(--mainFont);
  font-weight: 400;
  font-feature-settings: "palt";
  letter-spacing: 0.025em;
}

html.is_not_scroll, body.is_not_scroll {
  overflow: hidden;
}

body > footer {
  position: sticky;
  top: 100vh;
}

a {
  color: var(--fontMainColor);
  text-decoration: none;
}

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

button {
  appearance: none;
  -webkit-appearance: none;
  margin: 0;
  padding: 0;
  border: none;
  border-radius: 0;
  background-color: transparent;
}

/* ---------------------------
  utility
----------------------------- */
.wrapper {
  margin: 0 auto;
  max-width: 1280px;
  width: 100%;
  padding-left: 40px;
  padding-right: 40px;
}
@media screen and (max-width: 640px) {
  .wrapper {
    padding-left: 20px;
    padding-right: 20px;
  }
}

.br-pc {
  display: inline;
}
@media screen and (max-width: 640px) {
  .br-pc {
    display: none;
  }
}

.br-sp {
  display: none;
}
@media screen and (max-width: 640px) {
  .br-sp {
    display: inline;
  }
}

/* ---------------------------
  top
----------------------------- */
.content {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  width: 100%;
  height: 100vh;
  height: 100dvh;
}
.content h1 {
  text-align: center;
  font-size: 18px;
  font-weight: 700;
}
.content p {
  text-align: center;
  font-size: 14px;
  margin-top: 1em;
}
.content a {
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 240px;
  width: 100%;
  height: 64px;
  margin-inline: auto;
  margin-top: 1.5em;
  font-size: 15px;
  font-weight: 700;
  background-color: #569A99;
  transition: opacity 0.3s ease-in-out;
}
@media screen and (min-width: 640px) {
  .content a:hover {
    opacity: 0.8;
  }
}