/* ===== concept.css ===== */

.concept-page { background: #F8F8F8; }

/* ---------- HEADER ---------- */
.concept-top {
  text-align: center;
  padding-bottom: 0;
}
.concept-top .kicker {
  font-size: 30px;
  color: #2a3440;
  letter-spacing: .3em;
}
.concept-top__sub {
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: .14em;
  margin-top: 12px;
}

/* ---------- VOICE (お客様の言葉) ---------- */
.concept-voice {
  text-align: center;
  padding-top: clamp(60px, 8vw, 60px);
  padding-bottom: clamp(60px, 8vw, 100px);
}
.concept-voice__quote {
  font-family: var(--serif);
  font-size: clamp(17px, 2.2vw, 24px);
  letter-spacing: .22em;
  line-height: 2.2;
  color: var(--ink);
  margin: 0 0 2em;
  font-weight: 400;
}
.concept-voice__caption {
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: .3em;
  line-height: 2;
  margin: 0;
}

/* ---------- テキストセクション (見出し左 / 本文右) ---------- */
.concept-section {
  padding-top: clamp(60px, 8vw, 100px);
  padding-bottom: clamp(60px, 15vw, 200px);
}
.concept-section__inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 60px;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 80px;
  align-items: start;
}
.concept-section__head {
  position: sticky;
  top: 80px;
}
.concept-section__heading {
  font-family: var(--serif);
  font-size: 24px;
  letter-spacing: .18em;
  line-height: 1;
  font-weight: 400;
  color: var(--ink);
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}
/* 白帯: 各 <span> に白背景 */
.concept-section__heading span {
  background: #fff;
  padding: 6px 14px;
  line-height: 1.9;
  display: block;
}
.concept-section__body {
  font-family: var(--serif);
  font-size: 16px;
  letter-spacing: .08em;
  line-height: 2.6;
  color: var(--ink);
}
.concept-section__body p {
  font-size: 18px;
  margin: 0 0 1.8em;
}
.concept-section__body p:last-child { margin: 0; }

/* ---------- WORKS (bg01 背景 + 4つの動詞) ---------- */
.concept-works {
  background-image: linear-gradient(rgba(255,255,255,0.28), rgba(255,255,255,0.28)),
                    url(../img/common/bg01.webp);
  background-size: cover;
  background-position: center;
  padding-top: clamp(80px, 10vw, 120px);
  padding-bottom: clamp(80px, 10vw, 120px);
}
.concept-works__inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 60px;
}
.concept-works__title {
  font-family: var(--serif);
  font-size: 21px;
  letter-spacing: .2em;
  font-weight: 400;
  text-align: center;
  color: var(--ink);
  margin: 0 0 clamp(64px, 9vw, 110px);
}

/* 各アイテム */
.concept-work {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: clamp(56px, 7vw, 80px);
}
.concept-work:last-child { margin-bottom: 0; }

/* ランダムなずれ: 02 / 03 / 04 に左オフセット */
.concept-work:nth-child(3) { margin-left: 80px; }   /* 02 編む */
.concept-work:nth-child(4) { margin-left: 36px; }   /* 03 届ける */
.concept-work:nth-child(5) { margin-left: 112px; }  /* 04 育てる */

.concept-work__lhs {
  position: relative;
  padding-top: 52px;
}
/* 大きな白数字: 見出しの後ろに引く */
.concept-work__no {
  position: absolute;
  top: 0;
  left: -10px;
  font-family:serif;
  font-size: clamp(72px, 9vw, 100px);
  color: rgba(255, 255, 255, 0.6);
  line-height: 1;
  letter-spacing: -.02em;
  z-index: 0;
  pointer-events: none;
  user-select: none;
}
.concept-work__label {
  position: relative;
  z-index: 1;
}
.concept-work__verb {
  font-family: var(--serif);
  font-size: clamp(17px, 3vw, 40px);
  letter-spacing: .2em;
  color: var(--ink);
  margin: 0 0 -18px;
}
.concept-work__en {
  font-family: 'Baskervville', serif;
  font-size: 18px;
  letter-spacing: .16em;
  margin: 0;
}
.concept-work__body {
  font-family: var(--serif);
  font-size: 16px;
  letter-spacing: .1em;
  line-height: 2.5;
  color: var(--ink);
  margin: 0;
  padding-top: 6px;
}

/* ---------- クロージング ---------- */
.concept-close {
  background: #F8F8F8;
  padding-top: clamp(80px, 10vw, 120px);
  padding-bottom: clamp(80px, 10vw, 140px);
}
.concept-close__quote {
  font-family: var(--serif);
  font-size: 16px;
  letter-spacing: .2em;
  line-height: 2.6;
  color: var(--ink);
  text-align: center;
  margin: 0 0 clamp(60px, 8vw, 100px);
}
.concept-close__nav {
  max-width: 780px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.concept-close__label {
  font-family: var(--serif);
  font-size: clamp(18px, 2.2vw, 24px);
  letter-spacing: .22em;
  line-height: 2.0;
  color: var(--ink);
  margin: 0;
}
.concept-close__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.concept-close__links a {
  font-family: var(--serif);
  font-size: 15px;
  letter-spacing: .2em;
  color: var(--ink);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 16px;
  transition: gap .6s cubic-bezier(.25,.8,.25,1), opacity .3s ease;
}
.concept-close__links a:hover { gap: 44px; opacity: .55; }

/* 伸びる矢印（左側） */
.c-arrow {
  position: relative;
  width: 28px;
  height: 1px;
  background: currentColor;
  flex-shrink: 0;
  transition: width .6s cubic-bezier(.25,.8,.25,1);
}
.c-arrow::before,
.c-arrow::after {
  content: "";
  position: absolute;
  right: 0;
  width: 6px;
  height: 1px;
  background: currentColor;
}
.c-arrow::before {
  top: 0;
  transform: rotate(-38deg);
  transform-origin: right bottom;
}
.c-arrow::after {
  bottom: 0;
  transform: rotate(38deg);
  transform-origin: right top;
}
.concept-close__links a:hover .c-arrow { width: 64px; }

/* ---------- レスポンシブ ---------- */
@media (max-width: 768px) {
  .concept-section__body,
  .concept-section__body p,
  .concept-work__body { font-size: 14px; }

  .concept-section__inner {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 0 24px;
  }
  .concept-section__head { position: static; }
  .concept-work {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .concept-works__inner { padding: 0 24px; }
  .concept-work__no { font-size: 60px; }
  .concept-work:nth-child(3),
  .concept-work:nth-child(4),
  .concept-work:nth-child(5) { margin-left: 0; }
  .concept-close__nav {
    grid-template-columns: 1fr;
    gap: 40px;
    padding-left: 30px;
  }
}