/* spine-session.css — 背骨映像セッション専用LP */

@keyframes draw { to { stroke-dashoffset: 140; } }

/* ═══════════════════════════════
   ヒーロー（フルビューポート）
═══════════════════════════════ */
.spine-hero {
  min-height: 100svh;
  background: var(--sumi);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* 背景漢字 */
.spine-hero__bg {
  position: absolute;
  font-family: "Zen Old Mincho", serif;
  font-size: clamp(40vw, 55vw, 560px);
  font-weight: 700;
  color: rgba(244,238,225,.028);
  line-height: 1;
  user-select: none;
  pointer-events: none;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* 円相 */
.spine-hero__enso-wrap {
  position: absolute;
  width: clamp(280px, 56vw, 520px);
  height: clamp(280px, 56vw, 520px);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.spine-hero__enso {
  width: 100%;
  height: 100%;
  color: var(--kin);
  opacity: .22;
}

.spine-hero__enso circle {
  stroke-dasharray: 1570;
  stroke-dashoffset: 1570;
  animation: draw 2.8s var(--ease-soft) .5s forwards;
}

/* 内部テキスト */
.spine-hero__inner {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: clamp(120px, 18vh, 200px) clamp(24px, 8vw, 80px);
  max-width: 800px;
}

.spine-hero .eyebrow             { color: rgba(244,238,225,.55); }
.spine-hero .eyebrow::before     { background: rgba(244,238,225,.3); }
.spine-hero .eyebrow span        { color: var(--kin-soft); }
.spine-hero .eyebrow b           { color: rgba(244,238,225,.38); }

.spine-hero__h1 {
  font-family: "Zen Old Mincho", serif;
  font-size: clamp(2.4rem, 7vw, 5.5rem);
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--kinari);
  line-height: 1.35;
  margin: clamp(28px, 4vw, 44px) 0 clamp(18px, 3vw, 28px);
}

.spine-hero__sub {
  font-family: "Zen Old Mincho", serif;
  font-size: clamp(.88rem, 1.6vw, 1.1rem);
  font-weight: 400;
  letter-spacing: .14em;
  color: rgba(244,238,225,.6);
  margin-bottom: clamp(40px, 6vw, 60px);
}

/* ヒーロー内 CTAボタン（金色） */
.spine-hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: "Zen Old Mincho", serif;
  font-size: clamp(.8rem, 1.3vw, .92rem);
  font-weight: 500;
  letter-spacing: .22em;
  color: var(--kin);
  border: 1px solid var(--kin);
  padding: clamp(12px, 2vw, 16px) clamp(24px, 4vw, 40px);
  text-decoration: none;
  transition: background .4s var(--ease), color .4s var(--ease), gap .4s var(--ease);
}

.spine-hero__cta:hover {
  background: var(--kin);
  color: var(--sumi);
  gap: 16px;
}

/* ═══════════════════════════════
   コンセプト
═══════════════════════════════ */
.spine-concept {
  padding: clamp(90px, 14vh, 160px) clamp(24px, 8vw, 140px);
  background: var(--washi);
}

.spine-concept__inner {
  max-width: 760px;
  margin: 0 auto;
}

.spine-concept__text .h2 {
  margin: clamp(20px, 3vw, 32px) 0 clamp(24px, 3.5vw, 36px);
}

.spine-concept__text p {
  font-size: clamp(.9rem, 1.5vw, 1.04rem);
  letter-spacing: .06em;
  line-height: 2.35;
  color: var(--sumi-soft);
  margin-bottom: 1.8em;
}

.spine-concept__text p:last-child { margin-bottom: 0; }

.spine-concept__pull {
  font-family: "Zen Old Mincho", serif;
  font-size: clamp(1rem, 1.8vw, 1.28rem);
  font-weight: 500;
  letter-spacing: .1em;
  line-height: 1.9;
  color: var(--sumi);
  border-left: 3px solid var(--shu);
  padding-left: clamp(18px, 3vw, 28px);
  margin-top: clamp(36px, 5vw, 52px);
}

/* ═══════════════════════════════
   できること（3点）
═══════════════════════════════ */
.spine-points {
  padding: clamp(80px, 12vh, 140px) clamp(24px, 8vw, 140px);
  background: var(--kinari);
}

.spine-points__inner { max-width: 1100px; margin: 0 auto; }

.spine-points__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(280px, 100%), 1fr));
  gap: clamp(16px, 2.5vw, 24px);
  margin-top: clamp(44px, 6vw, 72px);
}

.spine-point {
  padding: clamp(28px, 4vw, 40px);
  background: var(--washi);
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  transition: box-shadow .4s var(--ease);
}

.spine-point::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0;
  width: 100%; height: 2px;
  background: var(--shu);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .5s var(--ease);
}

.spine-point:hover::after { transform: scaleX(1); }

.spine-point__num {
  font-family: "Cormorant Garamond", serif;
  font-style: italic;
  font-size: .72rem;
  letter-spacing: .22em;
  color: var(--shu);
  display: block;
  margin-bottom: 14px;
}

.spine-point__title {
  font-family: "Zen Old Mincho", serif;
  font-size: clamp(.96rem, 1.7vw, 1.15rem);
  font-weight: 600;
  letter-spacing: .07em;
  color: var(--sumi);
  line-height: 1.65;
  margin-bottom: 12px;
}

.spine-point__desc {
  font-size: clamp(.82rem, 1.3vw, .9rem);
  letter-spacing: .04em;
  line-height: 2;
  color: var(--sumi-soft);
}

/* ═══════════════════════════════
   こんな方へ
═══════════════════════════════ */
.spine-target {
  padding: clamp(72px, 10vh, 120px) clamp(24px, 8vw, 140px);
  background: var(--washi);
}

.spine-target__inner { max-width: 880px; margin: 0 auto; }

.spine-target__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: clamp(44px, 6vw, 64px);
}

.spine-target__item {
  background: var(--washi);
  padding: clamp(28px, 4vw, 44px);
}

.spine-target__icon {
  font-family: "Zen Old Mincho", serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--shu);
  opacity: .13;
  display: block;
  margin-bottom: 16px;
  user-select: none;
}

.spine-target__title {
  font-family: "Zen Old Mincho", serif;
  font-size: clamp(1rem, 1.7vw, 1.2rem);
  font-weight: 600;
  letter-spacing: .07em;
  color: var(--sumi);
  line-height: 1.65;
  margin-bottom: 12px;
}

.spine-target__desc {
  font-size: clamp(.82rem, 1.3vw, .9rem);
  letter-spacing: .04em;
  line-height: 2;
  color: var(--sumi-soft);
}

/* ═══════════════════════════════
   セッションの流れ（4ステップ）
═══════════════════════════════ */
.spine-flow {
  padding: clamp(80px, 12vh, 140px) clamp(24px, 8vw, 140px);
  background: var(--sumi);
}

.spine-flow__inner { max-width: 880px; margin: 0 auto; }

.spine-flow .eyebrow             { color: rgba(244,238,225,.55); }
.spine-flow .eyebrow::before     { background: rgba(244,238,225,.3); }
.spine-flow .eyebrow span        { color: var(--kin-soft); }
.spine-flow .eyebrow b           { color: rgba(244,238,225,.38); }

.spine-flow__h2 { color: var(--kinari); }

.spine-steps {
  display: grid;
  gap: 1px;
  background: rgba(244,238,225,.09);
  border: 1px solid rgba(244,238,225,.09);
  margin-top: clamp(48px, 6vw, 72px);
}

.spine-step {
  background: var(--sumi);
  padding: clamp(28px, 4vw, 44px);
  display: grid;
  grid-template-columns: clamp(72px, 7vw, 88px) 1fr;
  gap: clamp(16px, 2.5vw, 28px);
  align-items: start;
  transition: background .4s var(--ease);
}

.spine-step:hover { background: var(--sumi-soft); }

@media (max-width: 640px) {
  .spine-step {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

.spine-step__num {
  font-family: "Cormorant Garamond", serif;
  font-style: italic;
  font-size: .72rem;
  letter-spacing: .2em;
  color: var(--kin-soft);
  padding-top: 4px;
  white-space: nowrap;
}

.spine-step__title {
  font-family: "Zen Old Mincho", serif;
  font-size: clamp(.96rem, 1.7vw, 1.15rem);
  font-weight: 600;
  letter-spacing: .07em;
  color: var(--kinari);
  line-height: 1.65;
  margin-bottom: 10px;
}

.spine-step__desc {
  font-size: clamp(.82rem, 1.3vw, .9rem);
  letter-spacing: .04em;
  line-height: 2.1;
  color: rgba(244,238,225,.62);
}

/* ═══════════════════════════════
   お問い合わせ CTA
═══════════════════════════════ */
.spine-cta {
  padding: clamp(90px, 14vh, 160px) clamp(24px, 8vw, 140px);
  background: var(--washi);
  text-align: center;
}

.spine-cta__inner { max-width: 600px; margin: 0 auto; }

.spine-cta .h2 { margin: clamp(20px, 3vw, 32px) 0; }

.spine-cta__text {
  font-family: "Zen Old Mincho", serif;
  font-size: clamp(.9rem, 1.5vw, 1.05rem);
  font-weight: 400;
  letter-spacing: .08em;
  line-height: 2.2;
  color: var(--sumi-soft);
  margin-bottom: clamp(36px, 5vw, 52px);
}

.spine-cta__btns { margin-bottom: clamp(20px, 3vw, 28px); }

.spine-cta__note {
  font-size: .74rem;
  letter-spacing: .06em;
  line-height: 1.9;
  color: rgba(22,20,15,.38);
}