@import url("https://fonts.googleapis.com/css?family=Noto+Sans+JP:300,500|Noto+Serif+JP:300|Roboto:300,500,700&display=swap&subset=japanese");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  background-size: 100% auto;
  background-position: center;
  background-repeat: no-repeat;
  color: inherit;
  text-decoration: none;
  line-height: 1.5;
  position: relative;
  z-index: 1;
  font-family: "Helvetica", sans-serif;
}

/* * { background-color: rgba(255, 0, 0, 0.25); } */

html {
  background-color: #000;
}

body {
  background-color: #f0f0f0;
}

:root {
  font-size: 16px;
}

h1 {
  font-weight: bold;
  font-size: 2rem;
}

h2 {
  font-size: 1.25rem;
  color: #444;
}

h3 {
  font-size: 1.25rem;
  font-weight: normal;
  color: #444;
}

.line {
  width: 100%;
  margin: 1rem 0;
  border-top: 1px solid #d0d0d0;
}

.spacer {
  height: 6rem;
}

.header {
  width: 100%;
  height: 5rem;
  padding: 1.5rem 12.5%;
  position: fixed;
  top: 0;
  right: 0;
  bottom: auto;
  left: 0;
  z-index: 10;
  display: flex;
  flex-flow: row nowrap;
  justify-content: space-between;
  background-color: rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(16px) invert(100%);
  -webkit-backdrop-filter: blur(16px) invert(100%);
}

.header > div, .header > a {
  filter: drop-shadow(0 0 4px #000);
}

.logo {
  width: 9.78125rem;
  height: 2rem;
  background-image: url("./img/logo.png");
  background-size: auto 100%;
  background-position: 0 0;
  color: rgba(0, 0, 0, 0);
}

.menu {
  font-family: "Helvetica", sans-serif;
  font-weight: bold;
  color: #fff;
  display: flex;
  flex-flow: row nowrap;
}

.menu > a {
  margin: auto 1rem 0;
  font-size: 1.25rem;
}

.hero {
  width: 100%;
  margin: 0 0 1rem;
  padding: 11rem 12.5% 6rem;
  background-image: url("./img/hero.jpg");
  background-size: 100% 100%;
  display: flex;
  flex-flow: column;
  color: #fff;
}

.hero > div {
  filter: drop-shadow(0 0 4px #000);
}

.hero-title {
  margin: auto 0 1rem;
  font-size: 4rem;
  font-weight: bold;
}

.hero-text {
  margin: 0 0 auto;
  padding: 0 0 0 0.125rem;
  font-size: 1.5rem;
}

.main {
  padding: 0 12.5% 4rem;
}

.card-view {
  display: flex;
  flex-flow: row wrap;
  justify-content: space-between;
}

.card-view > .card {
  width: calc((100% - 2rem) / 2);
}

.card {
  margin: 1rem 0;
  display: flex;
  flex-flow: column nowrap;
  border-radius: 24px;
  overflow: hidden;
  background-color: #fff;
}

.card-thumb {
  height: 15rem;
  display: block;
  background-size: cover;
}

.card-text {
  padding: 2rem;
}

.card-detail {
  color: #444;
  margin: 1rem 0 0;
}

.card:nth-of-type(1) > .card-thumb {
  background-image: url("./img/thumb/01.jpg");
}

.card:nth-of-type(2) > .card-thumb {
  background-image: url("./img/thumb/02.jpg");
}

.card:nth-of-type(3) > .card-thumb {
  background-image: url("./img/thumb/03.jpg");
}

a.application {
  margin: 1rem 0 0;
  padding: 1rem 2rem 0.9rem;
  border-radius: 10rem;
  color: #fff;
  display: inline-block;
  background-color: #000;
  font-weight: bold;
  text-align: center;
  transition: 0.25s;
}

a.application:hover {
  transition: 0.25s;
  background-color: #0066ff;
}

a.dlpdf {
  margin: 1rem 0 0;
  padding: 1rem 2rem 0.9rem;
  border-radius: 10rem;
  display: inline-block;
  border: 1px solid #999;
  font-weight: bold;
  text-align: center;
  transition: 0.25s;
}

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

.link-wrapper > a {
  width: calc((100% - 2rem) / 2);
}

.footer {
  width: 100%;
  height: 3rem;
  padding: 1rem 12.5%;
  color: #fff;
  position: fixed;
  top: auto;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 10;
  font-size: 0.8rem;
  text-align: center;
  background-color: rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(16px) invert(100%);
  -webkit-backdrop-filter: blur(16px) invert(100%);
}

.closed {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  background-color: rgba(0, 0, 0, 0.8);
}

.closed::after {
  content: "終了しました";
  display: inline-block;
  font-size: 2rem;
  font-weight: bold;
  color: #fff;
  text-align: center;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translateX(-50%) translateY(-50%);
  filter: drop-shadow(0 0 4px #000);
}

.hidden-atmark::after {
  content: "@";
  display: inline-block;
}

.contact-buttons {
  margin: 1rem 0;
  display: flex;
}

.contact-buttons > a {
  width: 4rem;
  height: 4rem;
  border-radius: 12.5%;
  mask-image: url("./img/mask.png");
  mask-size: 100% 100%;
  background-color: red;
}

a.tx-button {
  background-image: url("./img/Xt_button.png");
}

a.ig-button {
  background-image: url("./img/Ig_button.png");
  margin: 0 2rem;
}

a.ln-button {
  background-image: url("./img/Ln_button.png");
}

@media screen and (max-width: 960px) {
  .header {
    padding: 1.5rem 2rem;
  }

  .main {
    padding: 0rem 2rem 3rem;
  }
}

@media screen and (max-width: 640px) {
  :root {
    font-size: 12px;
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1rem;
  }

  h3 {
    font-size: 1rem;
  }

  .spacer {
    height: 8rem;
  }

  .main {
    padding: 0rem 1rem 5rem;
  }

  .header {
    height: 7rem;
    padding: 0;
    flex-flow: column;
  }

  .logo {
    background-position: center;
    margin: 1rem auto;
  }

  .menu {
    padding: 0.5rem;
    border-top: 1px solid #fff;
    justify-content: center;
  }

  .hero {
    padding: 11rem 0 4rem;
    text-align: center;
  }

  .hero-title {
    margin: auto 0 0.5rem;
    font-size: 3rem;
  }
  
  .hero-text {
    font-size: 1.25rem;
    font-weight: bold;
  }

  .card-view {
    flex-flow: column no-wrap;
  }

  .card {
    width: 100%;
    margin: 0 0 1rem;
  }

  .card-view > .card {
    width: 100%;
  }

  .card > div {
    width: 100%;
  }

  .card-text {
    padding: 2rem;
  }

  .card-thumb {
    height: 12rem;
  }
}