/* =========================
  CONCEPT COMMON SIZE
========================= */

:root {
  --concept-h1-en: clamp(34px, 3.3vw, 40px);

  --concept-section-title: clamp(25px, 2.5vw, 30px);
  --concept-catch: clamp(24px, 2.7vw, 31px);

  --concept-subtitle: clamp(14px, 1.35vw, 16px);

  --concept-text: clamp(14px, 1.2vw, 16px);
  --concept-text-large: clamp(15px, 1.35vw, 18px);

  --concept-card-title: clamp(20px, 1.9vw, 24px);
}

/* =========================
  CONCEPT PAGE LEAD
========================= */

.concept-lead {
  padding: 64px 0 90px;
}

.concept-lead__inner {
  width: var(--aibi-width, 90%);
  max-width: var(--aibi-inner, 1100px);
  margin: 0 auto;
}

.concept-lead__head {
  margin-bottom: 56px;
}

.concept-lead__head p {
  margin: 0 0 18px;
  color: var(--aibi-color-gray, #999);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: .08em;
}

.concept-lead__head h1 {
  margin: 0;
  color: var(--aibi-color-gray-text, #777);
  font-size: var(--concept-h1-en);
  font-weight: 800;
  line-height: 1;
  letter-spacing: .02em;
  font-family: sans-serif;
}

.concept-lead__head h1 span {
  color: var(--aibi-color-main, #ee9988);
}

.concept-lead__head h1 em {
  margin-left: 12px;
  color: var(--aibi-color-gray-text, #777);
  font-size: 18px;
  font-style: normal;
  font-weight: 700;
}

/* h2は独立 */
.concept-lead__catch {
  margin: 0 0 18px;
  font-size: var(--concept-catch);
  font-weight: 600;
  line-height: 1.65;
  letter-spacing: .04em;
  position: relative;
  z-index: 2;
}

.concept-lead__main {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: clamp(32px, 4vw, 54px);
}

.concept-lead__text {
  flex: 1 1 0;
  max-width: 560px;
}

.concept-lead__text p {
  margin: 0;
  color: var(--aibi-color-gray, #777);
  font-size: var(--concept-text);
  font-weight: 500;
  line-height: 2;
  letter-spacing: .04em;
}

.concept-lead__text p + p {
  margin-top: 30px;
}

.concept-lead__text .concept-lead__intro {
  color: #111;
  font-weight: 500;
  margin-bottom: -20px;
}

.concept-lead__image {
  width: min(45%, 495px);
  margin: -18px 0 0;
  flex-shrink: 0;
  max-height: 450px;
  overflow: hidden;
}

.concept-lead__image img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

/* =========================
  CONCEPT ECO
========================= */

.concept-eco {
  padding: 40px 0 95px;
}

.concept-eco__inner {
  width: var(--aibi-width, 90%);
  max-width: var(--aibi-inner, 1100px);
  margin: 0 auto;
}

/* 上段 */

.concept-eco__top {
  display: grid;
  grid-template-columns: minmax(280px, 400px) 1fr;
  gap: clamp(24px, 4vw, 40px);
  align-items: start;
  margin-bottom: 90px;
}

.concept-eco__photo {
  margin: 0;
}

.concept-eco__photo img {
  width: 100%;
  display: block;
}

.concept-eco__head {
  margin-bottom: 36px;
  text-align: center;
}

.concept-eco__head h2,
.concept-eco__text h2 {
  margin: 0 0 8px;
  font-size: var(--concept-section-title);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: .04em;
}

.concept-eco__head p,
.concept-eco__text h3 {
  margin: 0;
  color: var(--aibi-color-gray, #777);
  font-size: var(--concept-subtitle);
  font-weight: 500;
  line-height: 1.6;
  letter-spacing: .04em;
}

.concept-eco__points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 2vw, 24px);
}

.concept-eco-point figure {
  margin: 0 0 16px;
}

.concept-eco-point figure img {
  width: 100%;
  display: block;
}

.concept-eco-point h3 {
  margin: 0 0 16px;
  color: var(--aibi-color-gray, #999);
  font-size: clamp(19px, 1.8vw, 21px);
  font-weight: 600;
  line-height: 1.35;
  text-align: center;
  letter-spacing: .03em;
}

.concept-eco-point p {
  margin: 0;
  color: var(--aibi-color-gray, #777);
  font-size: clamp(13px, 1.2vw, 15px);
  font-weight: 500;
  line-height: 2;
  letter-spacing: .03em;
}

/* 下段 */

.concept-eco__bottom {
  display: grid;
  grid-template-columns: minmax(300px, 420px) 1fr;
  gap: clamp(24px, 4vw, 40px);
  align-items: end;
}

.concept-eco__text h3 {
  margin-bottom: 32px;
}

.concept-eco__text p {
  margin: 0 0 28px;
  color: var(--aibi-color-gray, #777);
  font-size: clamp(13px, 1.2vw, 15px);
  font-weight: 500;
  line-height: 2;
  letter-spacing: .04em;
}

.concept-eco__text p:last-child {
  margin-bottom: 0;
}

.concept-eco__diagram {
  margin: 0;
}

.concept-eco__diagram img {
  width: 100%;
  display: block;
}

/* =========================
  CONCEPT COMFORT
========================= */

.concept-comfort {
  padding: 80px 0 90px;
}

.concept-comfort__inner {
  width: var(--aibi-width, 90%);
  max-width: var(--aibi-inner, 1100px);
  margin: 0 auto;
}

.concept-comfort__head {
  margin-bottom: 54px;
}

.concept-comfort__head h2 {
  margin: 0 0 8px;
  font-size: var(--concept-section-title);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: .04em;
}

.concept-comfort__head p {
  margin: 0;
  color: var(--aibi-color-gray, #777);
  font-size: var(--concept-subtitle);
  font-weight: 500;
  line-height: 1.7;
  letter-spacing: .04em;
}

/* 上段 */

.concept-comfort__mechanism {
  display: grid;
  grid-template-columns:
    minmax(220px, 1fr)
    minmax(220px, 270px)
    minmax(220px, 1fr);

  gap: clamp(28px, 5vw, 60px);
  align-items: center;
  margin-bottom: 84px;
}

.concept-comfort__text h3 {
  margin: 0 0 28px;
  color: var(--aibi-color-gray, #999);
  font-size: clamp(21px, 2vw, 25px);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: .04em;
}

.concept-comfort__text p {
  margin: 0;
  color: var(--aibi-color-gray, #777);
  font-size: var(--concept-text-large);
  font-weight: 600;
  line-height: 2.05;
  letter-spacing: .04em;
}

.concept-comfort__image {
  margin: 0;
}

.concept-comfort__image img {
  width: 100%;
  display: block;
}

/* 下段 */

.concept-comfort__safe .concept-comfort__head {
  margin-bottom: 34px;
}

.concept-comfort__cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 2.5vw, 30px);
}

.concept-comfort-card {
  text-align: center;
}

.concept-comfort-card figure {
  margin: 0 0 18px;
  overflow: hidden;
}

.concept-comfort-card img {
  width: 100%;
  aspect-ratio: 1.55 / 1;
  object-fit: cover;
  display: block;
}

.concept-comfort-card h3 {
  margin: 0 0 14px;
  color: var(--aibi-color-gray, #999);
  font-size: var(--concept-card-title);
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: .04em;
}

.concept-comfort-card p {
  margin: 0;
  color: var(--aibi-color-gray, #777);
  font-size: var(--concept-text-large);
  font-weight: 600;
  line-height: 1.9;
  letter-spacing: .04em;
}

/* =========================
  TABLET
========================= */

@media (max-width: 1100px) and (min-width: 769px) {

  .concept-comfort__mechanism {
    grid-template-columns:
      minmax(0, 1fr)
      minmax(220px, 250px)
      minmax(0, 1fr);

    gap: 28px;
  }

  .concept-comfort__text p,
  .concept-comfort-card p {
    font-size: 16px;
  }
}

/* =========================
  SP
========================= */

@media (max-width: 768px) {

  .concept-lead {
    padding: 52px 0 70px;
  }

  .concept-lead__inner,
  .concept-eco__inner,
  .concept-comfort__inner {
    width: var(--aibi-sp-width, calc(100% - 32px));
  }

  .concept-lead__head {
    margin-bottom: 36px;
  }

  .concept-lead__head p {
    margin-bottom: 14px;
    font-size: 17px;
  }

  .concept-lead__head h1 em {
    font-size: 15px;
  }

  .concept-lead__catch {
    margin-bottom: 24px;
  }

  .concept-lead__main {
    display: block;
  }

  .concept-lead__text {
    max-width: none;
  }

  .concept-lead__text p {
    font-size: 15px;
  }

  .concept-lead__image {
    width: 100%;
    max-height: none;
    margin: 34px 0 0;
  }

  .concept-eco {
    padding: 20px 0 70px;
  }

  .concept-eco__top,
  .concept-eco__bottom {
    display: block;
  }

  .concept-eco__photo,
  .concept-eco__diagram {
    margin-bottom: 34px;
  }

  .concept-eco__top {
    margin-bottom: 64px;
  }

  .concept-eco__points {
    grid-template-columns: 1fr;
    row-gap: 34px;
  }

  .concept-eco-point {
    display: grid;
    grid-template-columns: 130px 1fr;
    column-gap: 22px;
    align-items: start;
  }

  .concept-eco-point figure {
    grid-row: 1 / 3;
    margin: 0;
  }

  .concept-eco-point h3 {
    text-align: left;
    margin-bottom: 10px;
  }

  .concept-eco-point p,
  .concept-eco__text p {
    font-size: 14px;
    line-height: 1.9;
  }

  .concept-comfort {
    padding: 64px 0 70px;
  }

  .concept-comfort__head {
    margin-bottom: 34px;
  }

  .concept-comfort__mechanism {
    display: block;
    margin-bottom: 64px;
  }

  .concept-comfort__image {
    width: min(76%, 300px);
    margin: 28px auto;
  }

  .concept-comfort__text + .concept-comfort__text {
    margin-top: 34px;
  }

  .concept-comfort__text h3 {
    margin-bottom: 14px;
  }

  .concept-comfort__text p {
    font-size: 15px;
    line-height: 1.9;
  }

  .concept-comfort__cards {
    grid-template-columns: 1fr;
    row-gap: 38px;
  }

  .concept-comfort-card {
    text-align: left;
  }

  .concept-comfort-card figure {
    margin-bottom: 16px;
  }

  .concept-comfort-card h3 {
    text-align: center;
  }

  .concept-comfort-card p {
    font-size: 15px;
    line-height: 1.9;
    text-align: left;
  }
}

/* =========================
  CONCEPT COMMITMENT
========================= */

.concept-commitment {
  padding: 90px 0 110px;
}

.concept-commitment__inner {
  width: var(--aibi-width, 100%);
  max-width: var(--aibi-inner, 1100px);
  margin: 0 auto;
}

.concept-commitment__title {
  display: flex;
  justify-content: center;
  margin-bottom: 95px;
}

.concept-commitment__title p {
  margin: 0;
  writing-mode: vertical-rl;
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 600;
  line-height: 1.7;
  letter-spacing: .12em;
}

.concept-commitment__list {
  display: grid;
  row-gap: 82px;
}

.concept-commitment-item {
  display: grid;
  grid-template-columns: minmax(360px, 50%) minmax(0, 1fr);
  gap: clamp(38px, 5vw, 70px);
  align-items: center;
}

.concept-commitment-item__image {
  margin: 0;
  aspect-ratio: 1.28 / 1;
}

.concept-commitment-item__text {
  padding-top: 4px;
}

.concept-commitment-item__num {
  margin: 0 0 8px;
  color: var(--aibi-color-orange, #f26b2f);
  font-size: clamp(30px, 3vw, 38px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: .02em;
}

.concept-commitment-item__num span {
  margin-right: 8px;
  font-size: 14px;
  font-weight: 700;
}

.concept-commitment-item__text h3 {
  margin: 0 0 20px;
  font-size: clamp(24px, 2.5vw, 30px);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: .04em;
}

.concept-commitment-item__text > p:not(.concept-commitment-item__num) {
  margin: 0;
  color: var(--aibi-color-gray, #808080);
  font-size: clamp(13px, 1.2vw, 15px);
  font-weight: 500;
  line-height: 2;
  letter-spacing: .04em;
}

/* tablet */
@media (max-width: 1100px) and (min-width: 769px) {
  .concept-commitment__inner {
    width: var(--aibi-sp-width, calc(100% - 32px));
  }

  .concept-commitment-item {
    grid-template-columns: minmax(300px, 50%) minmax(0, 1fr);
    gap: 36px;
  }

  .concept-commitment-item__text > p:not(.concept-commitment-item__num) {
    font-size: 14px;
    line-height: 1.9;
  }
}

/* SP */
@media (max-width: 768px) {
  .concept-commitment {
    padding: 64px 0 70px;
  }

  .concept-commitment__inner {
    width: var(--aibi-sp-width, calc(100% - 32px));
  }

  .concept-commitment__title {
    justify-content: flex-start;
    margin-bottom: 46px;
  }

  .concept-commitment__title p {
    writing-mode: horizontal-tb;
    font-size: 28px;
    line-height: 1.6;
  }

  .concept-commitment__list {
    row-gap: 54px;
  }

  .concept-commitment-item {
    display: block;
  }

  .concept-commitment-item__image {
    aspect-ratio: 1.28 / 1;
    margin-bottom: 24px;
  }

  .concept-commitment-item__num {
    font-size: 32px;
  }

  .concept-commitment-item__text h3 {
    font-size: 24px;
    margin-bottom: 16px;
  }

  .concept-commitment-item__text > p:not(.concept-commitment-item__num) {
    font-size: 14px;
    line-height: 1.9;
  }
}