:root {
  --front-ink: #3e3a39;
  --front-ink-strong: #221815;
  --front-cream: #fdfbf1;
  --front-line: #b5b5b6;
  --front-muted: #efefef;
  --front-accent-yellow: #f4edb1;
  --front-green: #209C4E;
  --front-blue: #277DBF;
  --front-red: #CF3D52;
  /* リュウミン系の明朝フォールバック（R/B でファミリー名が異なるためスタックは共通化） */
  --font-ryumin-fallback: "Yu Mincho", "Hiragino Mincho ProN", "Hiragino Mincho Pro", "MS PMincho", serif;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--front-ink);
}

body.home,
body.blog.home {
  color: var(--front-ink-strong);
  font-family: "Yu Mincho", "Hiragino Mincho ProN", "Hiragino Mincho Pro", "MS PMincho", serif;
  line-height: 1.6;
  background-color: #fafafa;
}

.site-header,
.site-footer,
.front-page {
  font-family: "リュウミンR-KL", var(--font-ryumin-fallback);
}

section {
  background-color: #fff;
}

#site-page-shell,
.site-page {
  overflow-x: clip;
}

.site-page img {
  display: block;
  max-width: 100%;
  height: auto;
}

.site-shell {
  width: min(1193px, calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  position: relative;
  background: var(--front-cream);
  padding: 32px 0 32px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  z-index: 20;
}

.site-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-right: 36px;
}

.site-header__logo {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  margin-left: 50px;
  padding-top: 32px;
}

.site-header__logo img {
  width: min(346px, 34vw);
  min-width: 240px;
}

.site-header__contact {
  display: grid;
  gap: 6px;
  justify-items: end;
  text-align: right;
  padding-top: 0;
}

.site-header__contact p,
.site-header__contact a {
  color: var(--front-ink);
  font-size: 14px;
  line-height: 1.35;
  text-align: right;
}

.site-header__contact-label {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  white-space: nowrap;
}

.site-header__contact-label > span {
  display: block;
}

.site-header__contact a,
.site-header__contact p.site-header__contact-number {
  font-size: 32px;
  letter-spacing: 0.1em;
  line-height: 1;
}

.site-header__contact a {
  text-decoration: none;
}

.site-header__toggle {
  display: none;
}

.site-nav {
  margin-top: 94px;
  padding-inline: 80px;
}

.site-nav__list {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-nav__item a {
  color: var(--front-ink);
  font-size: 18px;
  line-height: 1.22;
  text-decoration: none;
}

.site-nav__contact {
  display: none;
}

.site-main {
  display: block;
}

.front-slider {
  margin-top: 0;
}

.front-slider__viewport {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1200 / 590;
  border-radius: 2px;
  background: var(--front-muted);
}

.front-slider__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1s ease;
}

.front-slider__slide.is-active {
  opacity: 1;
}

.front-slider__slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.front-slider__dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 46px;
}

.front-slider__dots span {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: rgba(62, 58, 57, 0.2);
  transition: background-color 0.3s ease;
}

.front-slider__dots span.is-active {
  background: var(--front-ink);
}

.front-concept {
  padding: 48px 0 38px;
  background-image: url("../images/back-circle01.webp");
  background-repeat: no-repeat;
  background-position: 5% top;
}

.front-concept__heading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 54px;
  text-align: center;
}

.front-concept__eyebrow {
  color: var(--front-ink);
  font-size: 32px;
  line-height: 1.24;
  letter-spacing: 0.04em;
}

.sp-break {
  display: none;
}

.pc-break {
  display: block;
}

.front-concept__eyebrow span {
  display: inline-block;
}

.front-concept h1 {
  margin-top: 0;
  font-size: clamp(38px, 4vw, 52px);
  font-weight: 400;
  line-height: 1.21;
  letter-spacing: 0.08em;
}

.front-concept__body {
  max-width: 780px;
  margin: 24px auto 0;
}

.front-concept__body p {
  font-size: 18px;
  line-height: 2;
}

.front-concept-category {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 80px;
  padding-inline: 30px;
}

.front-concept-category img {
  width: 100%;
  max-width: 364px;
  height: 100%;
  object-fit: cover;
}

.front-news {
  padding: 18px 0 64px;
}

.front-news__heading {
  text-align: center;
}

.front-concept__heading h2,
.front-news__heading h2,
.front-business__intro h2,
.front-company__heading h2 {
  font-size: clamp(36px, 4vw, 52px);
  font-weight: 400;
  line-height: 1.21;
  letter-spacing: 0.08em;
}

.front-news__content {
  margin-top: 36px;
}

.front-news__list {
  display: grid;
  gap: 12px;
  width: fit-content;
  max-width: 100%;
  margin-inline: auto;
}

.front-news__item {
  display: flex;
  justify-content: center;
  width: 100%;
}

.front-news__item a {
  display: flex;
  justify-content: center;
  max-width: 100%;
  color: var(--front-ink-strong);
  font-size: 19px;
  text-decoration: none;
  box-sizing: border-box;
}

.front-news__link-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  align-items: center;
  width: fit-content;
  max-width: 100%;
  border-bottom: 1px solid var(--front-ink-strong);
  padding-bottom: 0.35em;
  box-sizing: border-box;
}

.front-news__title {
  width: 100%;
  min-width: 0;
}

.front-news__item.is-empty {
  color: var(--front-ink-strong);
  font-size: 19px;
  text-align: center;
}

.front-news__item a:hover {
  text-decoration: none;
}

.front-news__item.is-empty span {
  display: block;
}

.front-news__item time {
  font-variant-numeric: tabular-nums;
}

.front-news__gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 136px;
}

.front-news__gallery-item {
  min-height: 214px;
  background: var(--front-muted);
}

.front-news__gallery-item a,
.front-news__gallery-item img,
.front-news__gallery-placeholder {
  width: 100%;
  height: 100%;
}

.front-news__gallery-item img {
  object-fit: cover;
}

.front-news__gallery-placeholder {
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    linear-gradient(140deg, rgba(255, 255, 255, 0.78), rgba(220, 221, 221, 0.9)),
    linear-gradient(45deg, #dadada, #f4f4f4);
  color: var(--front-ink);
  font-size: 15px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.front-business {
  padding: 28px 0 0px;
}

.front-business__intro {
  padding: 0px 0 60px;
  text-align: center;
}

.front-business__lead {
  max-width: 760px;
  margin: 24px auto 0;
  text-align: left;
}

.front-business__lead p {
  font-size: 18px;
  line-height: 2.08;
  color: var(--front-ink-strong);
}

.front-business__logo {
  margin-top: 40px;
  text-align: center;
}

.front-business__logo img {
  max-width: min(690px, 100%);
  height: auto;
  display: inline-block;
}

.front-pillar {
  position: relative;
  margin-top: 58px;
  padding: 0 0 24px;
}

.front-business .front-pillar:first-of-type {
  margin-top: 24px;
}

.front-pillar__wave {
  position: absolute;
  top: -46px;
  left: 50%;
  width: min(1193px, calc(100% - 48px));
  height: 78px;
  transform: translateX(-50%);
  background: currentColor;
  opacity: 0.22;
  clip-path: polygon(0 58%, 10% 30%, 20% 62%, 33% 40%, 49% 70%, 62% 38%, 75% 64%, 88% 34%, 100% 56%, 100% 100%, 0 100%);
}

.front-pillar__inner {
  position: relative;
}

.front-pillar__header {
  display: grid;
  grid-template-columns: 636px 1fr;
  align-items: start;
  gap: 10px;
  height: 210px;
  color: #fff;
}

.front-pillar h3 {
  font-size: 108px;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: 0.22em;
  color: var(--front-accent-yellow);
}

.front-pillar__header h3 {
  align-self: center;
  margin-left: 120px;
}

.front-pillar__description {
  align-self: center;
}

.front-pillar__description p {
  font-size: 19px;
  line-height: 2.05;
}

.front-pillar__media {
  margin-top: 72px;
}

.front-pillar.is-red .front-pillar__media {
  margin-top: 60px;
}

.front-business .front-pillar:first-of-type .front-pillar__media {
  margin-top: 40px;
}

.front-business .front-pillar:first-of-type .front-pillar__media-card {
  gap: 32px;
}

.front-pillar__media-card {
  min-height: 442px;
  border-radius: 2px;
}

.front-pillar__caption {
  width: fit-content;
  margin: 32px auto 0;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--front-ink-strong);
  color: var(--front-ink-strong);
  font-size: 20px;
}

.front-pillar.is-red .front-pillar__caption {
  margin-top: 48px;
}

.front-pillar__caption--chiiki {
  margin-top: 60px;
}

.front-pillar.is-green {
  padding-bottom: 0;
}

/* is-blue の margin-top 削減分（90px→20px = 70px）+ もともとの 24px を緑の inner 下パディングへ移設 */
.front-pillar.is-green .front-pillar__inner {
  padding-bottom: 94px;
  background-image: url("../images/back-circle02.webp");
  background-repeat: no-repeat;
  background-position: right bottom;
}

.front-pillar.is-green .front-pillar__header {
  background-image: url("../images/back-green.png");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.front-pillar.is-green .front-pillar__media-card {
  display: grid;
  grid-template-columns: 686fr 420fr;
  gap: 16px;
  width: min(1104px, 100%);
  margin: 0 auto;
  padding: 8px 0;
  align-items: end;
}

.front-pillar.is-green .front-pillar__media-card.front-pillar__media-card--equal {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.front-pillar.is-green .front-pillar__media-card .front-pillar__media-item:first-child img {
  height: auto;
  object-fit: contain;
}

.front-pillar.is-green .front-pillar__media-item {
  display: flex;
  flex-direction: column;
}

.front-pillar.is-green .front-pillar__media-item .front-pillar__media-caption {
  margin: 16px 0 0;
  font-size: 24px;
  text-align: center;
  color: #604c3f;
}

.front-pillar.is-green .front-pillar__media-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 33px;
  width: min(1104px, 100%);
  margin: 32px auto 0;
  align-items: end;
}

.front-pillar.is-green .front-pillar__media-row .front-pillar__media-item img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.front-pillar.is-blue {
  margin-top: 20px;
}

.front-pillar.is-blue .front-pillar__inner {
  padding-bottom: 48px;
  background-image: url("../images/back-circle04.webp"), url("../images/back-circle03.webp");
  background-repeat: no-repeat, no-repeat;
  background-position: right bottom, left 45%;
}

.front-pillar.is-blue .front-pillar__header {
  background-image: url("../images/back-blue.png");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}
.front-pillar.is-blue .front-pillar__media {
  margin-top: 64px;
}

.front-pillar.is-blue .front-pillar__media-card {
  width: min(1072px, 100%);
  margin: 24px auto 0;
  }

.front-pillar.is-red .front-pillar__media-card {
  width: min(1104px, 100%);
  margin: 0 auto;
}

.front-pillar.is-red .front-pillar__media-card--grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 35px;
  min-height: 0;
}

.front-pillar.is-red .front-pillar__media-item {
  display: flex;
  flex-direction: column;
}

.front-pillar.is-red .front-pillar__media-item img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.front-pillar.is-red .front-pillar__media-item .front-pillar__media-caption {
  width: 100%;
  margin: 12px 0 0;
  font-size: 24px;
  text-align: center;
  color: #604c3f;
}

.front-pillar.is-red .front-pillar__media-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 86px;
  width: min(1066px, 100%);
  margin: 32px auto 0;
}

.front-pillar.is-red .front-pillar__media-row .front-pillar__media-item img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.front-pillar.is-blue .front-pillar__media-card img {
  width: 100%;
  height: 100%;
}

.front-pillar.is-blue .front-pillar__media > .front-pillar__media-caption,
.front-pillar.is-blue .front-pillar__media-block > .front-pillar__media-caption {
  width: min(1104px, 100%);
  margin: 12px auto 0;
  font-size: 24px;
  text-align: center;
  color: #604c3f;
}

.front-pillar.is-blue .front-pillar__media-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  width: min(1072px, 100%);
  margin: 24px auto 0;
}

.front-pillar.is-blue .front-pillar__media-row img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.front-pillar.is-blue .front-pillar__media-row .front-pillar__media-item {
  display: flex;
  flex-direction: column;
}

.front-pillar.is-blue .front-pillar__media-row .front-pillar__media-item .front-pillar__media-caption {
  width: 100%;
  margin: 12px 0 0;
  font-size: 24px;
  text-align: center;
  color: #604c3f;
}

.front-pillar.is-blue .front-pillar__media-block {
  margin-top: 24px;
}

.front-pillar.is-red .front-pillar__header {
  background-image: url("../images/back-red.png");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.front-pillar.is-red {
  margin-top: 0px;
  padding-bottom: 0;
}

.front-pillar.is-red .front-pillar__inner {
  padding-bottom: 24px;
  background-image: url("../images/back-circle05.webp"), url("../images/back-circle06.webp");
  background-repeat: no-repeat, no-repeat;
  background-position: left 18%, right bottom;
}

.front-company {
  padding: 20px 0 140px;
}

.front-company__heading {
  text-align: center;
}

.front-company__table {
  max-width: 862px;
  margin: 54px auto 0;
}

.front-company__row {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 28px;
  padding: 15px 0 15px 46px;
  border-bottom: 2px solid var(--front-line);
}

.front-company__row:first-child {
  border-top: 0;
}

.front-company__row:last-child {
  border-bottom: 0;
}

.front-company__label,
.front-company__value {
  font-size: 22px;
  color: var(--front-ink);
}

.site-footer {
  background: var(--front-cream);
  padding: 108px 0 21px;
}

.wave-line {
  width: min(100%, 1193px);
  height: 78px;
  margin: 0 auto 56px;
  background: url("../images/wave.svg") center center / cover no-repeat;
}

.front-news .wave-line {
  margin-bottom: 40px;
}

.front-company .wave-line {
  margin-bottom: 140px;
}

.site-footer .wave-line {
  margin-top: 100px;
  margin-bottom: 62px;
}

.site-footer__inner {
  display: grid;
  max-width: 862px;
  grid-template-columns: 272px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.site-footer__left {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.site-footer__right {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-left: 216px;
}

.site-footer__brand img {
  width: 272px;
}

.site-footer__menu ul {
  display: grid;
  gap: 28px;
}

.site-footer__menu {
  margin-left: 24px;
  margin-top: 36px;
}

.site-footer__menu a {
  color: var(--front-ink);
  font-size: 20px;
  text-decoration: none;
}

.site-footer__company,
.site-footer__office {
  display: grid;
  gap: 32px;
}

.site-footer__company {
  margin-top: 40px;
}

.site-footer__office {
  margin-top: 66px;
}

.site-footer__company img {
  width: 293px;
}

.site-footer__office img {
  width: 293px;
}

.site-footer__address {
  position: relative;
  display: grid;
  gap: 6px;
  padding-left: 22px;
}

.site-footer__address::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: #595757;
}

.site-footer__address p {
  color: var(--front-ink);
  font-size: 18px;
  line-height: 1.35;
}

.site-footer__address.is-office p {
  font-size: 18px;
}

.site-footer__copyright {
  margin-top: 58px;
  color: var(--front-ink);
  font-size: 13px;
  text-align: center;
}

/* タブレットのみ */
@media (min-width: 768px) and (max-width: 1120px) {
  .front-concept,
  .front-pillar.is-green .front-pillar__inner,
  .front-pillar.is-blue .front-pillar__inner,
  .front-pillar.is-red .front-pillar__inner {
    position: relative;
    z-index: 0;
    background-image: none;
  }

  .front-concept::before,
  .front-pillar.is-green .front-pillar__inner::before,
  .front-pillar.is-blue .front-pillar__inner::before,
  .front-pillar.is-red .front-pillar__inner::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 100vw;
    transform: translateX(-50%);
    background-repeat: no-repeat;
    pointer-events: none;
    z-index: -1;
  }

  .front-concept::before {
    background-image: url("../images/back-circle01.webp");
    background-position: left top;
  }

  .front-pillar.is-green .front-pillar__inner::before {
    background-image: url("../images/back-circle02.webp");
    background-position: right bottom;
  }

  .front-pillar.is-blue .front-pillar__inner::before {
    background-image: url("../images/back-circle04.webp"), url("../images/back-circle03.webp");
    background-repeat: no-repeat, no-repeat;
    background-position: right bottom, left 45%;
  }

  .front-pillar.is-red .front-pillar__inner::before {
    background-image: url("../images/back-circle05.webp"), url("../images/back-circle06.webp");
    background-repeat: no-repeat, no-repeat;
    background-position: left 15%, right bottom;
  }

  .front-slider.site-shell {
    width: 100vw;
    max-width: none;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
  }

  .front-pillar__header {
    width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    height: auto;
    padding-block: 40px;
  }

  .front-pillar.is-green .front-pillar__media-card img {
    width: 100%;
    height: auto;
    object-fit: cover;
  }
}

@media (max-width: 1120px) {
  body.home,
  body.blog.home {
    background-color: #fff;
  }

  .site-header__bar {
    flex-wrap: nowrap;
    align-items: flex-start;
    padding-right: 0;
  }

  .site-header__contact {
    flex: 1 1 auto;
    width: auto;
    justify-items: end;
    margin-left: 0;
  }

  .site-footer__inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 920px) {
  .site-shell {
    width: min(100%, calc(100% - 40px));
  }

  .front-concept {
    padding-top: 88px;
  }
  .front-business__intro,
  .front-company {
    padding-top: 0px;
  }

  .front-news__gallery {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 96px;
  }

  .front-pillar {
    padding: 64px 0 64px;
  }

  .front-pillar.is-blue .front-pillar__inner {
    padding-bottom: 50px;
  }

  /* is-green は pillar の下パディングを 0 にしているため、920px以下分(64px)を inner に加算 */
  .front-pillar.is-green .front-pillar__inner {
    padding-bottom: 134px;
  }

  /* is-red は pillar の下パディングを 0 にしているため、移設した 24px に 64px 相当を加算 */
  .front-pillar.is-red .front-pillar__inner {
    padding-bottom: 88px;
  }

  .front-pillar__header,
  .front-company__row {
    grid-template-columns: 1fr;
  }

  .site-footer__inner {
    max-width: 720px;
    grid-template-columns: 238px minmax(0, 1fr);
    gap: 12px;
  }

  .site-footer__right {
    margin-left: 120px;
  }

  .front-pillar__header {
    gap: 24px;
    padding-inline: 1em;
  }

  .front-pillar__header h3 {
    margin-left: 0;
    text-align: center;
  }

  .front-company__row {
    gap: 20px;
    padding-left: 24px;
  }

  .site-footer__brand img {
    width: 238px;
    margin-inline: 0;
  }

  .site-footer__company img {
    width: 270px;
    margin-inline: 0;
  }

  .site-footer__office img {
    width: 246px;
    margin-inline: 0;
  }

  .site-footer__menu {
    margin-left: 12px;
    margin-top: 0;
  }

  .site-footer__company {
    margin-top: 0;
  }
}

@media (max-width: 767px) {
  .site-shell {
    width: min(100%, calc(100% - 32px));
  }

  .site-header {
    position: relative;
    padding: 26px 0 20px;
  }

  /* box-shadow はPC/モバイル共通で .site-header に適用 */

  .site-header__bar {
    align-items: center;
  }

  .site-header__logo img {
    width: min(240px, 80vw);
    min-width: 0;
  }

  .site-header__logo {
    padding-top: 0;
  }

  .site-header__contact {
    display: none;
  }

  .site-header__toggle {
    display: inline-flex;
    flex-direction: column;
    gap: 5px;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: pointer;
  }

  .site-header__toggle span:not(.screen-reader-text) {
    width: 24px;
    height: 2px;
    background: var(--front-ink);
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 10;
    display: none;
    width: 100%;
    margin-top: 0;
    padding: 20px 16px 24px;
    background: var(--front-cream);
    border-top: 1px solid rgba(62, 58, 57, 0.12);
  }

  .site-nav.is-open {
    display: block;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.12);
  }

  .site-nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

  .site-nav__item a {
    line-height: 2.5;
  }

  .site-nav__contact {
    display: block;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid rgba(62, 58, 57, 0.12);
  }

  .site-nav__contact a {
    color: var(--front-ink);
    font-size: 24px;
    line-height: 1.35;
    text-decoration: none;
    letter-spacing: 0.1em;
  }

  .site-nav__contact p.site-header__contact-number {
    font-size: 24px;
    letter-spacing: 0.1em;
  }

  .front-concept {
    padding-top: 88px;
  }
  .front-business__intro,
  .front-company {
    padding-top: 0px;
  }

  .front-concept,
  .front-pillar.is-green .front-pillar__inner,
  .front-pillar.is-blue .front-pillar__inner,
  .front-pillar.is-red .front-pillar__inner {
    position: relative;
    z-index: 0;
    background-image: none;
  }

  .front-concept::before,
  .front-pillar.is-green .front-pillar__inner::before,
  .front-pillar.is-blue .front-pillar__inner::before,
  .front-pillar.is-red .front-pillar__inner::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 100vw;
    transform: translateX(-50%);
    background-repeat: no-repeat;
    pointer-events: none;
    z-index: -1;
  }

  .front-concept::before {
    background-image: url("../images/back-circle01.webp");
    background-position: left top;
    background-size: 50% auto;
  }

  .front-pillar.is-green .front-pillar__inner::before {
    background-image: url("../images/back-circle02.webp");
    background-position: right bottom;
    background-size: 100% auto;
  }

  .front-pillar.is-blue .front-pillar__inner::before {
    background-image: url("../images/back-circle04.webp"), url("../images/back-circle03.webp");
    background-repeat: no-repeat, no-repeat;
    background-position: right bottom, left 45%;
    background-size: 80% auto, 80% auto;
  }

  .front-pillar.is-red .front-pillar__inner::before {
    background-image: url("../images/back-circle05.webp"), url("../images/back-circle06.webp");
    background-repeat: no-repeat, no-repeat;
    background-position: left 15%, right bottom;
    background-size: 80% auto, 80% auto;
  }

  .front-slider.site-shell {
    width: 100vw;
    max-width: none;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
  }

  .front-concept__body {
    margin-top: 24px;
  }

  .front-concept-category {
    grid-template-columns: 1fr;
    padding-inline: 0;
    gap: 24px;
  }

  .front-concept-category img {
    max-width: none;
    width: 100%;
  }

  .front-concept__eyebrow {
    font-size: 20px; /* スマホのみ */
  }

  .front-company__label,
  .front-company__value {
    font-size: 18px;
  }

  .sp-break {
    display: block;
  }

  .pc-break {
    display: none;
  }

  .front-news__link-inner {
    grid-template-columns: 1fr;
    gap: 0;
    align-items: start;
    justify-items: center;
    text-align: center;
  }

  .front-news__item a {
    font-size: 16px;
  }

  .front-news__item.is-empty {
    font-size: 16px;
  }

  .front-news__title {
    margin-left: 0;
  }

  .site-footer__menu li {
    padding-block: 4px;
  }

  .front-news__gallery {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-top: 64px;
  }

  .front-news__gallery-item {
    min-height: 0;
    aspect-ratio: 4/3;
  }

  .front-news__gallery-item img {
    object-fit: cover;
  }

  .front-company__row {
    gap: 12px;
    padding-left: 24px;
  }

  .front-pillar__header {
    width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    height: auto;
    padding-block: 40px;
  }

  .front-pillar__header h3 {
    font-size: 3em;
  }

  .front-pillar__media {
    margin-top: 42px;
  }

  .front-pillar__media-card {
    min-height: 260px;
  }

  .front-pillar.is-green .front-pillar__media-card {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .front-pillar.is-green .front-pillar__media-card.front-pillar__media-card--equal {
    grid-template-columns: 1fr;
  }

  .front-pillar.is-green .front-pillar__media-card img {
    height: auto;
  }

  .front-pillar.is-green .front-pillar__media-card .front-pillar__media-item:first-child img {
    height: auto;
    object-fit: contain;
  }

  .front-pillar.is-green .front-pillar__media-row {
    grid-template-columns: 1fr;
    gap: 36px;
    margin-top: 24px;
  }

  .front-pillar.is-blue .front-pillar__media-card img {
    min-height: 260px;
  }

  .front-pillar.is-blue .front-pillar__media-row {
    grid-template-columns: 1fr;
    gap: 24px;
    width: 100%;
    margin: 24px 0 0;
  }

  .front-pillar.is-blue .front-pillar__media-block > .front-pillar__media-caption {
    margin: 0;
  }

  .front-pillar.is-red .front-pillar__media-card--grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .front-pillar.is-red .front-pillar__media-row {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .site-footer {
    padding-top: 72px;
  }

  .site-footer__inner {
    max-width: none;
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .site-footer__right {
    margin-left: 0;
  }

  .site-footer__brand img {
    display: block;
    margin-inline: auto;
  }

  .img {
    width: min(100%, 320px);
    margin-inline: auto;
  }

  .site-footer__company img,
  .site-footer__office img {
    display: block;
    width: min(100%, 320px);
    margin-inline: auto;
  }

  .site-footer__menu {
    margin-top: 32px;
    margin-left: 0;
  }

  .site-footer__menu ul {
    justify-items: center;
  }

  .site-footer__company {
    margin-top: 66px;
  }

  .site-footer__wave {
    margin-bottom: 28px;
  }

  .site-footer__address p,
  .site-footer__address.is-office p {
    font-size: 18px;
  }
}

/* =========================================================
   投稿ページ (Single)
========================================================= */
.single-wrapper {
  padding: 80px 0 120px;
}

.single-article {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  box-sizing: border-box;
}

.single-header {
  text-align: center;
  margin-bottom: 50px;
}

.single-meta {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
  color: var(--front-ink-strong);
  font-size: 16px;
}

.single-category {
  background-color: var(--front-muted);
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.05em;
}

.single-header h1 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: 0.08em;
}

.single-thumbnail {
  margin-bottom: 40px;
  text-align: center;
}

.single-thumbnail img {
  width: 100%;
  height: auto;
  border-radius: 2px;
}

.single-body .entry-content {
  font-size: 17px;
  line-height: 2;
  color: var(--front-ink);
}

.single-body .entry-content h2 {
  font-size: 24px;
  margin: 2em 0 1em;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--front-line);
}

.single-body .entry-content p {
  margin-bottom: 1.5em;
}

.single-footer {
  max-width: 800px;
  margin: 80px auto 0;
  padding-top: 40px;
  border-top: 1px solid var(--front-line);
}

/* 前後の記事リンクの調整 */
.single-footer .navigation {
  display: flex;
  justify-content: space-between;
  gap: 24px;
}

.single-footer .navigation a {
  color: var(--front-ink-strong);
  text-decoration: none;
  font-size: 16px;
  transition: opacity 0.3s;
}

.single-footer .navigation a:hover {
  opacity: 0.7;
}

/* スマホ表示の調整 */
@media (max-width: 767px) {
  .single-wrapper {
    padding: 40px 0 80px;
  }

  .single-header h1 {
    font-size: 24px;
  }
}

/* =========================================================
   404ページ
========================================================= */
.error-404-body {
  text-align: center;
  padding-bottom: 40px;
}

.error-404-body p {
  color: var(--front-ink);
  font-size: 17px;
  line-height: 2;
  margin-bottom: 40px;
}

.error-404-action {
  margin-top: 50px;
}

.btn-back-home {
  display: inline-block;
  background-color: var(--front-ink-strong);
  color: #fff;
  padding: 16px 48px;
  border-radius: 999px;
  font-size: 16px;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: opacity 0.3s ease;
}

.btn-back-home:hover {
  opacity: 0.7;
  text-decoration: none;
}