/* ========================================
solution header
======================================== */

.solution-header {
  padding-top: clamp(140px, 12vw, 220px);
  text-align: center;
}

/* label */

.solution-label {
  font-size: 1.6rem;
  margin-bottom: 1.2rem;
}

/* main */

.solution-main {
  position: relative;

  display: grid;

  width: 100%;

  min-height: clamp(16rem, 18vw, 28rem);

  margin-inline: auto;

  overflow: hidden;
}

/* word */

.solution-word {
  grid-area: 1 / 1;

  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  /* padding-top: clamp(1rem, 1.4vw, 2rem); */
  opacity: 0;
  transform: translateY(1.2rem);
  transition:
    opacity 0.35s ease,
    transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

/* text */

.solution-word span {
  display: block;
  font-size: clamp(5.6rem, 10vw, 12rem);
  line-height: 0.92;
  letter-spacing: -0.04em;
  font-weight: 700;
}

/* active */

.solution-word.is-show {
  opacity: 1;
  transform: translateY(0);
}
/* hide */

.solution-word.is-hide {
  opacity: 0;
  transform: translateY(1.2rem);
}

/* lead */

.solution-lead {
  margin-top: 2rem;
  font-size: clamp(1.8rem, 1.43vw, 2.4rem);
  line-height: 1.5;
  font-weight: 600;
}

/* ========================================
description
======================================== */

.solution-description {
  margin-top: clamp(6rem, 5.71vw, 9.6rem);
}

.solution-description p {
  font-size: clamp(1.6rem, 1.14vw, 1.8rem);
  line-height: 2;
}

.solution-description p + p {
  margin-top: 2rem;
}

/* ========================================
service
======================================== */

.service-sec {
  padding: clamp(6rem, 5.71vw, 12rem) 0 clamp(14.4rem, 11.42vw, 24rem);
}

/* grid */

.service-grid {
  display: grid;
  grid-template-columns: max(16rem, 32.6vw) 1fr;
  column-gap: clamp(4rem, 4vw, 8rem);
  padding-inline: max(30px, 2.14vw);
}

/* ========================================
nav
======================================== */

.service-nav {
  position: sticky;
  top: 12rem;
  align-self: start;
  padding-top: clamp(16rem, 14.29vw, 24rem);
}

/* title */

.service-nav-title {
  font-size: clamp(1.2rem, 0.85vw, 1.4rem);
  line-height: 1.5;
}

/* list */

.service-nav-list {
  margin-top: clamp(3rem, 2.85vw, 4rem);
}

/* item */

.service-nav-list li + li {
  margin-top: 0.8rem;
}

/* link */

.service-nav-link {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  width: fit-content;
  position: relative;
  font-size: clamp(1.2rem, 1vw, 1.6rem);
  line-height: 1.5;
  font-weight: 500;
}

/* line */

/* .service-nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0.2rem;
  width: 100%;
  height: 1px;
  background: #000;
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform 0.45s cubic-bezier(0.76, 0, 0.24, 1);
} */

/* hover */

/* .service-nav-link:hover::after {
  transform: scaleX(1);
  transform-origin: left center;
} */

.service-nav-link:hover {
  opacity: 0.5;
  transition: 0.4s;
}

/* ========================================
contents
======================================== */

.service-item {
  padding-top: clamp(16rem, 14.29vw, 24rem);
}

.service-item + .service-item {
  padding-top: clamp(16rem, 14.29vw, 24rem);
}

/* head */

.service-item-head {
  display: grid;
  grid-template-columns: clamp(8rem, 8vw, 14rem) 1fr;
  column-gap: clamp(4rem, 6vw, 12rem);
}

/* number */

.service-number {
  font-size: clamp(8rem, 10vw, 16rem);
  line-height: 0.9;
  font-weight: 700;
  height: fit-content;
}

/* ========================================
char animation
======================================== */

.js-char-animation {
  overflow: hidden;
}

.js-char-animation span {
  display: inline-block;

  opacity: 0;
  transform: translateY(105%);

  transition:
    transform 0.9s cubic-bezier(0.16, 1, 0.3, 1),
    opacity 0.9s ease;
}

.js-char-animation.is-show span {
  opacity: 1;
  transform: translateY(0);
}

/* title */

.service-title {
  font-size: clamp(3rem, 2.85vw, 4.8rem);
  line-height: 1.3;
  font-weight: 700;
}

/* subtitle */

.service-subtitle {
  margin-top: 1.6rem;

  font-size: clamp(1.4rem, 1vw, 1.6rem);
  line-height: 1.5;
}

/* text */

.service-text {
  margin-top: clamp(4rem, 4vw, 6rem);

  font-size: clamp(1.6rem, 1.14vw, 2rem);
  line-height: 2;
}

/* detail */

.service-detail {
  margin-top: clamp(6rem, 5.71vw, 8rem);
}

/* detail title */

.service-detail-title {
  font-size: clamp(1.6rem, 1.14vw, 2rem);
  line-height: 1.5;
  font-weight: 700;
}

/* detail list */

.service-detail-list {
  margin-top: clamp(2.4rem, 2vw, 3.2rem);
}

/* item */

.service-detail-list li {
  padding-block: clamp(1.6rem, 1.42vw, 2.4rem);

  border-bottom: 1px solid rgba(0, 0, 0, 0.12);

  font-size: clamp(1.5rem, 1vw, 1.7rem);
  line-height: 1.6;
}

/* ========================================
images
======================================== */

.service-images {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(2rem, 2vw, 3.2rem);

  margin-top: clamp(8rem, 8vw, 12rem);
}

/* mask */

.reveal-mask {
  overflow: hidden;
  clip-path: inset(100% 0 0 0);

  transition: clip-path 1.2s cubic-bezier(0.22, 1, 0.36, 1);
}

/* image */

.service-image {
  width: 100%;
  display: block;

  transform: scale(1.12) translateY(-6%);
  transition: transform 1.6s cubic-bezier(0.22, 1, 0.36, 1);
}

/* show */

.service-images.is-show .reveal-mask {
  clip-path: inset(0 0 0 0);
}

.service-images.is-show .service-image {
  transform: scale(1) translateY(0);
}

/* 少し遅らせる */

.service-images.is-show .reveal-mask:nth-child(2) {
  transition-delay: 0.18s;
}

.service-images.is-show .reveal-mask:nth-child(2) .service-image {
  transition-delay: 0.18s;
}

/* ========================================
responsive
======================================== */

@media screen and (max-width: 768px) {
  .solution-header {
    padding-top: 12rem;
  }
  .service-sec {
    padding: 8rem 0;
  }
  .service-grid {
    grid-template-columns: 1fr;
  }

  .service-nav {
    display: none;
  }

  .service-nav-list {
    display: flex;
    flex-direction: column;
  }
  .service-item {
    padding-top: 8rem;
  }
  .service-item-head {
    grid-template-columns: 30vw 1fr;
  }

  .service-number {
    font-size: 12rem;
  }
}

@media screen and (max-width: 599px) {
  .solution-header{
    padding: 6rem 2rem;
  }
  .solution-label {
    margin-bottom: 1.2rem;
    font-size: 1.4rem;
  }
  .solution-lead{
font-size: 1.6rem;
  }
  .solution-description p {
    font-size: 1.4rem;
  }
  .solution-description p + p {
    margin-top: 1rem;
  }

  .solution-main
 {
  min-height: 6.4rem;
 }
  .solution-word span {
    font-size: 3.7rem;
  }
  .service-sec{
    padding: 4rem 0 6rem;
  }
  .service-item-head {
    grid-template-columns: 1fr;
  }
  .service-item {
    padding-top: 2rem;
  }
  .service-number{
    font-size: 6.4rem;
  }
  .service-title{
    font-size: 2.4rem;
    margin-top: 3rem;
  }
  .service-text{
    margin-top: 3rem;
    font-size: 1.4rem;
  }
  .service-detail{
    margin-top: 3rem;
  }
  .service-detail-title{
    font-size: 1.4rem;
  }
  .service-detail-list li{
    font-size: 1.4rem;
  }
  .service-detail-list{
    margin-top: 0;
  }
  .service-images{
    margin-top: 3.6rem;
  }
  .service-item + .service-item{
    padding-top: 6rem;
  }
}