:root {
  --color-bg: #f2f2f2;
  --color-bg-dark: #b2b2b2 ;
  --color-text: #0f0f0f;
  --font-large: 1.2em;
  --font-larger: 1.7em;
  --font-normal: 87.5%;
  --font-small: .8em;
  --font-smaller: .7em;
  --line-height: 1.7;
  --margin: 1em;
  --padding: 1em;

  --size-nav-icon: 2em;
  --height-nav: calc(var(--size-nav-icon) + var(--padding) * 2);
  --height-works-grid: calc(100vw / 6);
  --height-title-grid: calc(100dvh - var(--height-works-grid) - var(--height-nav));

  --width-two-column: 100%;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

a {
  background-color: transparent;
  color: currentColor;
  text-decoration: none;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family:
    "Helvetica Neue",
    "Helvetica",
    "Hiragino Sans",
    "Hiragino Kaku Gothic ProN",
    "Arial",
    "Yu Gothic",
    "Meiryo",
    sans-serif;
  font-size: var(--font-normal);
  letter-spacing: 0.08em;
  line-height: var(--line-height);
  text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}

h1,
h2,
#home-menu {
  font-size: var(--font-large);
  font-family: "Courier New", Consolas, monospace;
  font-weight: normal;
  letter-spacing: .25em;
  text-transform: uppercase;
}
h1 {
  margin-bottom: var(--padding);
  margin-top: calc(var(--padding) * 5);
}
h1 span {
  display: block;
  font-size: var(--font-smaller);
}
h1 span:before {
  content: '\f0d7';
}
h2 {
  margin-top: var(--padding);
}
h1:first-letter {
  font-size: calc(var(--font-large) * 2);
  font-weight: bold;
}

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

ul {
  list-style: none;
}

.border {
  border: 1px solid;
}

.img-bg {
  background-repeat: no-repeat;
}

.column-wrapper,
.column-wrapper-w {
  columns: 1;
  column-gap: var(--padding);
  text-align: justify;
}
.column-wrapper p,
.column-wrapper-w p {
  margin-bottom: var(--padding);
}
.column-wrapper-w h2 {
  background: var(--color-bg-dark);
  color: var(--color-bg);
  display: inline-block;
  margin-top: var(--margin);
  padding: 0 .5em;
}
.common-wrapper {
  margin: var(--margin);
}
.middle-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
}
.right-middle-wrapper {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  margin-right: var(--padding);
}

#page-top {
  bottom: 10px;
  font-size: 50px;
  right: 10px;
  opacity: 1;
  position: fixed;
}
#page-top a:before {
  content: '\f139';
}


.go-home {
  letter-spacing: .5em;
  position: absolute;
  top: var(--padding);
  left: var(--padding);
}
.go-home img {
  height: var(--size-nav-icon);
  width: auto;
}


/* index.html
------------------------------------------------------------------------------*/
.home-wrapper {
  height: 100dvh;

  background-image: url(../img/index/home-work-0.jpg);
  background-position: left center;
  background-size: contain;
}
#home {
  display: grid;
  grid-template-rows: var(--height-nav) var(--height-title-grid) var(--height-works-grid);
}
#home-menu {
  position: absolute;
  bottom: 20%;
  left: var(--padding);
  z-index: 9999;
}

.home-nav {
  height: var(--height-nav);
  padding-right: var(--padding);
  text-align: right;
}
.home-nav li {
  display: inline;
  font-size: var(--size-nav-icon);
}
.home-nav li:not(:last-of-type) {
  padding-right: 10px;
}
.home-title {
  -ms-writing-mode: tb-rl;
  -webkit-writing-mode: vertical-rl;
  writing-mode: vertical-rl;
  position: relative;
}
.home-works {
  display: grid;
  grid-template-columns: repeat(6, var(--height-works-grid));
}
[class^="home-works-"] span {
  display: none;
}


.service-wrapper {
  display: grid;
  gap: 10px 10px;
  grid-template-columns: 100%;
  text-align: center;
}
.service-design,
.service-web {
  background: var(--color-bg-dark);
  color: var(--color-bg);
  padding: var(--padding);
}
.service-img {
  font-size: 10em;
}
.service-type {
  font-size: var(--font-larger);
  letter-spacing: .5em;
}
.service-exp {
  padding: var(--padding) 0;
  text-align: justify;
}

.works-wrapper {
  display: grid;
  gap: 50px 10px;
  grid-template-columns: 100%;
  text-align: justify;
}
.works-wrapper li:not(:first-child) {
  padding-left: 10px;
}
.works-wrapper li:nth-child(3),
.portfolio-exp li:nth-child(2) {
  font-size: var(--font-smaller);
}
.works-wrapper li:nth-child(3):before,
.portfolio-exp li:nth-child(2):before {
  content: "\23";
}


.skill li {
  display: inline-block;
}
.skill li:before {
  padding-right: .5em;
}
.skill li:not(:last-of-type) {
  padding-right: var(--padding);
}


#sukiru br {
  display: none;
}
#sukiru ul {
  background: var(--color-bg-dark);
  border: 1px solid var(--color-bg-dark);
  display: inline-block;
  margin: var(--padding) auto;
  padding: .5em;
}


/* footer
------------------------------------------------------------------------------*/
.footer {
  border-top: 1px solid;
  padding-top: var(--margin);
  text-align: center;
}
#inquiry ul {
  margin: var(--margin) auto;
}
#inquiry li {
  font-size: var(--font-large);
  padding-top: 5px;
}
.inquiry-time {
  font-size: var(--font-small);
}

.copyright {
  font-size: var(--font-small);
  margin-top: calc(var(--margin) * 2);
}



/* portfolio
------------------------------------------------------------------------------*/
#portfolio {
  background-image: url(../img/works/w-bg-v.svg);
  background-position: left top;
  background-size: contain;
}


/* animation
------------------------------------------------------------------------------*/
.scroll-fade {
  opacity: .25;
  transition: opacity 3s, visibility 3s;
  visibility: hidden;
}
.scroll-fadein {
  opacity: 1;
  visibility: visible;
}


.scrolldown {
  position: absolute;
  bottom: 1%;
  right: 50%;
  animation: arrowmove 1s ease-in-out infinite;
}

@keyframes arrowmove {
  0%{ bottom: 1%; }
  50%{ bottom: 3%; }
  100%{ bottom: 1%; }
}

.scrolldown span{
  position: absolute;
  left: -20px;
  bottom: 0px;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
}

.scrolldown:before {
  background: var(--color-text);
  content: "";
  position: absolute;
  bottom: 0;
  right: -6px;
  width: 1px;
  height: 20px;
  transform: skewX(-31deg);
}

.scrolldown:after {
  background: var(--color-text);
  content: "";
  position: absolute;
  bottom: 0;
  right: 0;
  width: 1px;
  height: 100px;
}


/* readmore
------------------------------------------------------------------------------*/
.readmore {
  box-sizing: border-box;
  position: relative;
}
.readmore-content {
  height: 100px;
  position: relative;
  overflow: hidden;
  text-align: justify;
}
.readmore-content:before {
  content: "";
  display: block;
  position: absolute;
  bottom: 0;
  left: 0;

  height: 50px;
  width: var(--width-two-column);

  background: -webkit-linear-gradient(to bottom, rgba(242, 242, 242, 0) 0%, rgba(242, 242, 242, 0.8) 50%, rgba(242, 242, 242, 0.8) 50%, #f2f2f2 100%);
  background: linear-gradient(to bottom, rgba(242, 242, 242, 0) 0%, rgba(242, 242, 242, 0.8) 50%, rgba(242, 242, 242, 0.8) 50%, #f2f2f2 100%);
}
.readmore-label {
  background-color: var(--color-text);
  border-radius: 10px;
  color: var(--color-bg);

  display: table;
  position: absolute;
  bottom: 0;
  left: 50%;
  z-index: 2;

  transform: translateX(-50%);
  -webkit-transform: translateX(-50%);

  margin: 0 auto;
  padding: 0 10px;
}
.readmore-label:before {
  content: '続きを読む';
}
.readmore-check {
  display: none;
}
.readmore-check:checked ~ .readmore-label {
  /*
  position: static;
  transform: translateX(0);
  -webkit-transform: translateX(0);
  */
  display: none;
}
.readmore-check:checked ~ .readmore-label:before {
  content: '閉じる';
}
.readmore-check:checked ~ .readmore-content {
  height: auto;
}
.readmore-check:checked ~ .readmore-content:before {
  display: none;
}


/* pc
------------------------------------------------------------------------------*/
@media screen and (min-width: 768px) {
  :root {
    --font-large: 1.25em;
    --font-normal: 100%;
    --font-small: .9em;
    --margin: 5em;
    --padding: 2em;
    --size-nav-icon: 4em;
    --width-two-column: 70%;
  }

  .column-wrapper {
    columns: 2 auto;
    width: var(--width-two-column);
  }
  .column-wrapper-w {
    columns: 2 auto;
  }

  #home-menu {
    position: absolute;
    top: 40%;
    left: 50%;
    z-index: 9999;
  }

  .home-nav {
    padding-right: calc(var(--padding) * 2);
  }
  .home-title {
    font-size: var(--font-large);
  }
  [class^="home-works-"] {
    position: relative;
  }
  [class^="home-works-"] span {
    background: var(--color-text);
    color: var(--color-bg);
    display: inline;

    position: absolute;
    left: var(--padding);
    top: var(--padding);
    padding: 0 calc(var(--padding) / 2);
  }

  .service-wrapper {
    grid-template-columns: 50% 50%;
  }
  .works-wrapper {
    grid-template-columns: repeat(3, 1fr);
  }

  #about {
    background-image: url(../img/common/me.svg);
    background-position: right bottom;
    background-size: 15% auto;
  }

  #sukiru br {
    display: inline;
  }

  #inquiry li {
    font-size: var(--font-larger);
    padding-top: 10px;
  }

  .copyright {
    text-align: right;
  }
}