@charset "UTF-8";

/* ===============================================================================

  FIRON "About" PC Styles

=============================================================================== */

/*
  Header
=============================================================================== */
.l-header { background: rgba(var(--wht-rgb), .9); }

/*
  Main
=============================================================================== */
.l-main {
  background-color: #fafafa;
  padding-top: calc((3.75% / 2) + 3.75%);
  padding-bottom: 500px;
}

/*
  Section
=============================================================================== */
.l-main section {
  position: relative;
  width: 100%;
}
.sec-heading {
  font-size: 56px;
  font-size: 5.6rem;
  letter-spacing: .05em;
  line-height: 1.4;
  text-align: center;
}
.sec01 .sec-heading span {
  font-weight: 100;
  display: inline-block;
  transform: scale(2.0, 1.0);
  transform-origin: 50% 50%;
  margin: 0 0 0 .5em;
}

/* Section01
------------------------------------------------------------------------------- */
.sec01 > figure {
  width: 100%;
  height: 500px;
  overflow: hidden;
  background: url(../images/firon_about_sec01_bg.png) no-repeat 50% 0;
  background-size: cover;
}
.sec01 .inner {
  position: relative;
  z-index: 1;
  padding: 80px 50px 90px;
  margin: -135px auto 0;
  background-color: var(--wht);
}
.mv-container {
  position: relative;
  width: 100%;
  height: 0;
  padding: 0 0 calc(9 / 16 * 100%);
  margin: 65px 0 0;
}
.mv-container video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.sec01 .lead {
  font-size: 18px;
  font-size: 1.8rem;
  letter-spacing: .05em;
  line-height: 2.0;
  margin: 60px 0 75px;
}
.sec01 .inner figure:first-of-type {
  width: calc(663.3995 / 850 * 100%);
  margin: 0 auto 100px;
}
.sec01 .inner figure:last-of-type {
  width: calc(470 / 850 * 100%);
  margin: auto;
}

.firon-material { margin: 110px 0 0; }
.firon-material h3 {
  font-size: 20px;
  font-size: 2.0rem;
  letter-spacing: .05em;
  line-height: 1.0;
  text-align: center;
  color: var(--sepia);
  margin: 30px 0 40px;
}
.firon-material ul li {
  position: relative;
  font-size: 18px;
  font-size: 1.8rem;
  letter-spacing: .05em;
  color: var(--wht);
  background-color: var(--sepia);
  line-height: 48px;
  padding: 0 0 0 65px;
  margin: 25px 0 0;
}
.firon-material ul li::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 30px;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  display: inline-block;
  background: url(../images/icon_check.svg) no-repeat 0 0;
  background-size: cover;
}

/* Section02
------------------------------------------------------------------------------- */
.sec02 .inner {
  position: relative;
  z-index: 1;
  padding: 50px;
  margin: -100px auto 0;
  background-color: var(--wht);
}

/* Section Header */
.sec02 .sec-header {
  position: relative;
  width: 100%;
  height: 500px;
  overflow: hidden;
  background: url(../images/firon_about_sec02_bg.png) no-repeat 50% 0;
  background-size: cover;
  display: grid;
}
.sec02 .sec-header .contents-area {
  position: relative;
  z-index: 1;
  grid-area: 1 / 1;
  display: grid;
  place-content: center;
}
.sec02 .sec-header h2 {
  font-size: 29px;
  font-size: 2.9rem;
  font-weight: 500;
  letter-spacing: .05em;
  line-height: 1.4;
  text-align: center;
  color: var(--wht);
  text-shadow: 3px 3px 3px rgba(var(--blk-rgb), .75);
}
.sec02 .sec-heading { margin: 0 0 50px; }

/* Feature */
.feature-unit {
  padding: 30px 20px 80px;
  background: rgba(var(--sepia-rgb), .45);
}
.feat01, .feat02, .feat03 { margin: 0 0 45px; }

.feature-unit > h3 {
  font-family: "Roboto", sans-serif;
  font-size: 32px;
  font-size: 3.2rem;
  letter-spacing: .05em;
  text-align: center;
  margin: 0 0 .75em;
  color: var(--sepia);
}
.feature-unit > h4 {
  font-size: 40px;
  font-size: 4.0rem;
  letter-spacing: .05em;
  text-align: center;
  line-height: 80px;
  color: var(--wht);
  background-color: var(--sepia);
  margin: 0 0 25px;
}

.feat-intro {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 20px;
  margin: 0 0 25px;
}
.feat-intro > figure { overflow: hidden; }
.feat-intro > figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
}
.feat-intro > dl dt {
  font-size: 25px;
  font-size: 2.5rem;
  font-weight: 600;
  letter-spacing: .05em;
  text-align: center;
  line-height: 40px;
  color: var(--wht);
  background-color: var(--sepia);
}
.feat-intro > dl dd {
  font-size: 16px;
  font-size: 1.6rem;
  letter-spacing: .05em;
  line-height: 1.5;
  margin: 1em 0 1.5em;
}

.feat-graph { position: relative; }
.feat-graph::after {
  content: "";
  position: absolute;
  bottom: 0;
  right: 0;
  width: 100%;
  height: 100%;
  box-shadow: 5px 5px 0px 0px rgba(204,204,204, .75);
  mix-blend-mode: multiply;
}
.feat-lead {
  font-size: 16px;
  font-size: 1.6rem;
  letter-spacing: .05em;
  color: var(--sepia);
  text-align: center;
  background-color: var(--wht);
  line-height: 60px;
  margin: 20px 0 0;
}
.feat-lead span { font-size: calc(22 / 16 * 1em); }

.feat04 .feat-lead {
  font-size: 16px;
  font-size: 1.6rem;
  letter-spacing: .05em;
  line-height: 1.5;
  padding: 1.25em;
  text-align: left;
}
.feat04 .feat-lead p {
  font-size: 1em;
  font-weight: 600;
  color: var(--blk);
  text-align: center;
  margin: 0 0 .75em;
}

.feat-images {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  align-items: stretch;
  gap: 20px;
  margin: 30px 0 0;
}
.feat-images figure img {
  width: 100%;
  height: auto;
}

.feat01 .feat-images figure { background-color: var(--wht); }
.feat01 .feat-images figure figcaption {
  text-align: center;
  display: grid;
  place-content: center;
}
.feat01 .feat-images figure:nth-of-type(2) figcaption { height: calc((344.65 - 278.26) / 344.65 * 100%); }
.feat01 .feat-images figure:nth-of-type(4) figcaption { height: calc((347.5 - 252.75) / 347.5 * 100%); }

.feat01 .feat-images figure figcaption span {
  font-size: 16px;
  font-size: 1.6rem;
  letter-spacing: .05em;
  line-height: 1.5;
  color: var(--sepia);
  display: inline-block;
}
.feat01 .feat-images figure figcaption i {
  font-size: calc(22 / 16 * 1em);
  font-style: normal;
}

.feat03 .feat-lead + small {
  font-size: 14px;
  font-size: 1.4rem;
  font-weight: 500;
  letter-spacing: .05em;
  text-align: center;
  display: block;
  margin: .5em 0 0;
  text-indent: -1em;
  padding: 0 0 0 1em;
}
.feat03 .feat-lead + small::before { content: '※'; }

.feat04 > figure img {
  width: 100%;
  height: auto;
}

/* Contact Button */
.contact-btn {
  text-align: center;
  color: var(--wht);
  background-color: var(--sepia);
  text-decoration: none;
  display: grid;
  place-content: center;
  width: fit-content;
  height: 66px;
  border-radius: 66px;
  padding: 0 10em 0 6em;
  border: solid 2px var(--sepia);
  margin: 80px auto 0;
  transition: all .3s;
}
.contact-btn span {
  position: relative;
  font-size: 22px;
  font-size: 2.2rem;
  letter-spacing: .05em;
  white-space: nowrap;
}
.contact-btn span::after {
  content: "";
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  right: -50px;
  width: 35px;
  height: 35px;
  background-repeat: no-repeat;
  background-position: 0 0;
  background-image: url(../images/icon_arrow.svg);
  background-size: cover;
}
.contact-btn:hover {
  color: var(--sepia);
  background-color: var(--wht);
}
.contact-btn:hover span::after { background-image: url(../images/icon_arrow_ov.svg); }