/* ========================================
   頭浸浴 LP スタイルシート
   Blessed ヘアーカットブレスト（豊橋）
   ======================================== */

/* ---------- リセット・ベース ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* カラーパレット（上質なゴールド×ダークトーン） */
  --color-gold: #c9a96e;
  --color-gold-light: #e2c99a;
  --color-gold-dark: #9e7a42;
  --color-deep: #0d0d0d;
  --color-dark: #1a1814;
  --color-surface: #211e19;
  --color-surface2: #2c2822;
  --color-text: #f0ede8;
  --color-text-muted: #a09a92;
  --color-white: #ffffff;

  /* フォント */
  --font-serif: 'Noto Serif JP', 'Yu Mincho', serif;
  --font-sans: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
  --font-latin: 'Cormorant Garamond', serif;

  /* スペーシング */
  --section-py: clamp(5rem, 10vw, 9rem);
  --container-w: 1100px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--color-deep);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.8;
  letter-spacing: 0.04em;
  overflow-x: hidden;
}

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

em {
  font-style: italic;
  color: var(--color-gold);
}

strong {
  color: var(--color-gold-light);
  font-weight: 500;
}

/* ---------- コンテナ ---------- */
.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 5vw, 3rem);
}

/* ---------- セクション共通 ---------- */
.section__label {
  font-family: var(--font-latin);
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.section__label::after {
  content: '';
  flex: 1;
  max-width: 50px;
  height: 1px;
  background: var(--color-gold);
  opacity: 0.5;
}

.section__title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3.5vw, 2.5rem);
  font-weight: 400;
  line-height: 1.5;
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
}

.section__lead {
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.9;
  max-width: 600px;
  margin-bottom: 3rem;
}

.section__img-note {
  position: absolute;
  bottom: 0.8rem;
  right: 1.2rem;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.7);
  background: rgba(0, 0, 0, 0.4);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  backdrop-filter: blur(4px);
  letter-spacing: 0.05em;
  z-index: 2;
}

.section__img-note.text-center {
  right: auto;
  left: 50%;
  transform: translateX(-50%);
}

/* ---------- ボタン ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 1.1rem 2.2rem;
  border-radius: 4px;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
}

.btn--hero {
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  color: var(--color-deep);
  font-size: 1.1rem;
  padding: 1.3rem 2.8rem;
  box-shadow: 0 4px 20px rgba(201, 169, 110, 0.35);
}

.btn--hero:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(201, 169, 110, 0.5);
}

.btn--gold {
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  color: var(--color-deep);
  font-weight: 700;
  width: 100%;
}

.btn--gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(201, 169, 110, 0.4);
}

.btn--outline {
  background: transparent;
  border: 1px solid var(--color-gold);
  color: var(--color-gold);
  width: 100%;
}

.btn--outline:hover {
  background: var(--color-gold);
  color: var(--color-deep);
}

.btn--cta {
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  color: var(--color-deep);
  padding: 1.5rem 3.5rem;
  font-size: 1.15rem;
  font-weight: 700;
  border-radius: 60px;
  box-shadow: 0 0 40px rgba(201, 169, 110, 0.4);
  text-align: center;
  flex-direction: column;
  gap: 0.2em;
}

.btn--cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 40px rgba(201, 169, 110, 0.6);
}

.btn--cta small {
  font-size: 0.9rem;
  font-weight: 400;
  opacity: 0.85;
}

.btn__icon {
  font-size: 1.2em;
}

/* ---------- ヒーローセクション ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__img {
  object-position: center 30%;
  filter: brightness(0.55);
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right,
      rgba(13, 13, 13, 0.75) 0%,
      rgba(13, 13, 13, 0.3) 60%,
      rgba(13, 13, 13, 0.05) 100%);
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: clamp(6rem, 15vw, 10rem) clamp(1.5rem, 5vw, 3rem) 4rem;
  width: 100%;
}

.hero__label {
  font-family: var(--font-latin);
  font-size: 0.85rem;
  letter-spacing: 0.35em;
  color: var(--color-gold);
  margin-bottom: 1.5rem;
  text-transform: uppercase;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 6vw, 4.4rem);
  font-weight: 300;
  line-height: 1.25;
  margin-bottom: 1.5rem;
  color: var(--color-white);
  letter-spacing: 0.02em;
}

.hero__title em {
  font-weight: 500;
  color: var(--color-gold-light);
}

.hero__title--ja {
  display: block;
}

.hero__sub {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 2vw, 1.35rem);
  font-weight: 300;
  color: var(--color-gold-light);
  margin-bottom: 1.5rem;
  letter-spacing: 0.1em;
}

.hero__desc {
  font-size: clamp(0.95rem, 1.8vw, 1.05rem);
  color: rgba(240, 237, 232, 0.85);
  line-height: 2;
  max-width: 520px;
  margin-bottom: 2.5rem;
}

.hero__note {
  margin-top: 1.2rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
}

.hero__img-note {
  position: absolute;
  bottom: 1.5rem;
  right: 2rem;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.6);
  z-index: 2;
  letter-spacing: 0.1em;
}

/* スクロール誘導 */
.hero__scroll {
  position: absolute;
  bottom: 2rem;
  right: clamp(1.5rem, 5vw, 3rem);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.hero__scroll span {
  font-family: var(--font-latin);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  text-transform: lowercase;
  writing-mode: vertical-rl;
}

.hero__scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--color-gold), transparent);
  animation: scrollDown 1.8s ease-in-out infinite;
}

@keyframes scrollDown {
  0% {
    transform: scaleY(0);
    transform-origin: top;
    opacity: 1;
  }

  50% {
    transform: scaleY(1);
    transform-origin: top;
    opacity: 1;
  }

  51% {
    transform: scaleY(1);
    transform-origin: bottom;
    opacity: 1;
  }

  100% {
    transform: scaleY(0);
    transform-origin: bottom;
    opacity: 0;
  }
}

/* ---------- 問題提起セクション ---------- */
.problems {
  padding: var(--section-py) 0;
  background: var(--color-dark);
}

.problems__list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
  list-style: none;
}

.problems__item {
  background: var(--color-surface);
  border: 1px solid rgba(201, 169, 110, 0.12);
  border-radius: 8px;
  padding: 1.8rem;
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
  transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  opacity: 0;
  transform: translateY(30px);
}

.problems__item.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.problems__item:hover {
  border-color: rgba(201, 169, 110, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.problems__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: rgba(201, 169, 110, 0.08);
  border-radius: 50%;
  color: var(--color-gold);
  flex-shrink: 0;
}

.problems__item p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.problems__item strong {
  display: block;
  font-size: 1.05rem;
  color: var(--color-text);
  margin-top: 0.2rem;
}

.problems__cta {
  text-align: center;
  padding: 2.5rem;
  border: 1px solid rgba(201, 169, 110, 0.2);
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(201, 169, 110, 0.05), rgba(201, 169, 110, 0.02));
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}

.problems__cta.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.problems__cta-text {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  font-weight: 400;
  line-height: 1.8;
  color: var(--color-text);
}

/* ---------- 解決策セクション ---------- */
.solution {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 600px;
  background: var(--color-surface);
}

.solution__image-wrap {
  position: relative;
  overflow: hidden;
}

.solution__image-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, transparent 60%, var(--color-surface));
}

.solution__content {
  display: flex;
  align-items: center;
  padding: var(--section-py) clamp(2rem, 5vw, 4rem);
  opacity: 0;
  transform: translateX(40px);
  transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.solution__content.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.solution__heading {
  margin-bottom: 2rem;
}

.solution__text {
  color: var(--color-text-muted);
  font-size: 0.97rem;
  line-height: 2;
  margin-bottom: 1.5rem;
}

.solution__text em {
  text-decoration: underline;
  text-decoration-color: rgba(201, 169, 110, 0.4);
  text-underline-offset: 3px;
}

.solution__lead-text {
  margin-top: 2.5rem;
  padding: 1.5rem;
  border-left: 3px solid var(--color-gold);
  background: rgba(201, 169, 110, 0.03);
  border-radius: 0 8px 8px 0;
}

.solution__lead-text p {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--color-gold-light);
}

.solution__lead-text span {
  display: block;
  font-size: 0.85rem;
  color: var(--color-gold-dark);
  margin-top: 0.5rem;
}

.solution__set-offer {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px dashed rgba(201, 169, 110, 0.3);
}

.set-offer__desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.set-offer__price {
  font-size: 0.95rem;
  color: var(--color-text);
  background: rgba(0, 0, 0, 0.2);
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: 4px;
}

.set-offer__price strong {
  font-size: 1.1rem;
  margin-left: 0.5rem;
}

/* ---------- 理由・根拠セクション ---------- */
.reasons {
  padding: var(--section-py) 0;
  background: var(--color-dark);
}

.reasons__image-center {
  max-width: 480px;
  height: 260px;
  margin: 0 auto 4rem;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(201, 169, 110, 0.15);
}

.reasons__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.reason-card {
  background: var(--color-surface);
  border: 1px solid rgba(201, 169, 110, 0.1);
  border-radius: 10px;
  padding: 2.5rem 2rem;
  transition: all 0.5s ease;
  opacity: 0;
  transform: translateY(40px);
}

.reason-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reason-card:nth-child(2) {
  transition-delay: 0.15s;
}

.reason-card:nth-child(3) {
  transition-delay: 0.3s;
}

.reason-card:hover {
  border-color: rgba(201, 169, 110, 0.3);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  transform: translateY(-4px);
}

.reason-card__number {
  font-family: var(--font-latin);
  font-size: 3.5rem;
  font-weight: 300;
  color: rgba(201, 169, 110, 0.15);
  line-height: 1;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.reason-card__title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 500;
  line-height: 1.6;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.reason-card__text {
  font-size: 0.9rem;
  line-height: 2;
  color: var(--color-text-muted);
}

/* ---------- 体験談・変化セクション ---------- */
.voices {
  padding: var(--section-py) 0;
  background: var(--color-surface);
}

.voices__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.voice-card {
  background: var(--color-dark);
  border: 1px solid rgba(201, 169, 110, 0.1);
  border-radius: 10px;
  padding: 2.5rem 2rem;
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.6s ease;
}

.voice-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.voice-card:nth-child(2) {
  transition-delay: 0.15s;
}

.voice-card:nth-child(3) {
  transition-delay: 0.3s;
}

.voice-card:hover {
  border-color: rgba(201, 169, 110, 0.25);
  transform: translateY(-4px);
}

.voice-card__icon {
  margin-bottom: 1.5rem;
  display: inline-flex;
  padding: 1rem;
  background: rgba(201, 169, 110, 0.05);
  border-radius: 50%;
}

.voice-card__title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 1rem;
  color: var(--color-gold-light);
}

.voice-card__text {
  font-size: 0.9rem;
  line-height: 2;
  color: var(--color-text-muted);
}

/* ---------- オファー・価格セクション ---------- */
.offer {
  padding: var(--section-py) 0;
  background: var(--color-dark);
}

.offer__title {
  max-width: 700px;
}

.offer__lead {
  color: var(--color-text-muted);
  font-size: 0.97rem;
  line-height: 2;
  max-width: 640px;
  margin-bottom: 3rem;
}

.offer__cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 800px;
}

.offer-card {
  display: flex;
  flex-direction: column;
  border-radius: 12px;
  padding: 2.5rem 2rem 2rem;
  position: relative;
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.offer-card .btn {
  margin-top: auto;
}

.offer-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.offer-card:nth-child(2) {
  transition-delay: 0.15s;
}

.offer-card--standard {
  background: var(--color-surface);
  border: 1px solid rgba(201, 169, 110, 0.15);
}

.offer-card--premium {
  background: linear-gradient(145deg, var(--color-surface2), #1c1910);
  border: 1px solid rgba(201, 169, 110, 0.4);
  box-shadow: 0 0 40px rgba(201, 169, 110, 0.1);
}

.offer-card__recommend {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  color: var(--color-deep);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 0.3rem 1.2rem;
  border-radius: 30px;
  white-space: nowrap;
}

.offer-card__badge {
  font-family: var(--font-latin);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  color: var(--color-text-muted);
  margin-bottom: 0.8rem;
  text-transform: uppercase;
}

.offer-card__badge--premium {
  color: var(--color-gold);
}

.offer-card__name {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.offer-card__usage {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.offer-card__price {
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
  margin-bottom: 0.5rem;
}

.offer-card__price-num {
  font-family: var(--font-latin);
  font-size: 2.8rem;
  font-weight: 400;
  color: var(--color-gold);
  letter-spacing: -0.02em;
}

.offer-card__price-per {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.offer-card__calc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.offer-card__calc strong {
  color: var(--color-gold-light);
}

.offer-card__desc {
  font-size: 0.88rem;
  line-height: 1.9;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
}

.offer__note {
  margin-top: 2rem;
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* ---------- CTAセクション ---------- */
.cta {
  position: relative;
  padding: var(--section-py) 0;
  text-align: center;
  overflow: hidden;
}

.cta__bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(201, 169, 110, 0.08) 0%, var(--color-deep) 70%);
}

.cta__content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.cta__label {
  justify-content: center;
}

.cta__label::after {
  display: none;
}

.cta__title {
  font-family: var(--font-serif);
  font-size: clamp(1.7rem, 4vw, 2.8rem);
  font-weight: 300;
  line-height: 1.5;
  letter-spacing: 0.05em;
  color: var(--color-text);
}

.cta__text {
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 2;
}

.cta__info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
  width: 100%;
  max-width: 750px;
  margin-top: 1rem;
  padding: 2rem;
  background: var(--color-surface);
  border: 1px solid rgba(201, 169, 110, 0.15);
  border-radius: 10px;
  text-align: left;
}

.cta__info-item {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.cta__info-label {
  font-size: 0.75rem;
  color: var(--color-gold);
  letter-spacing: 0.1em;
  font-family: var(--font-latin);
  text-transform: uppercase;
}

.cta__info-value {
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.7;
}

.cta__hint {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  border: 1px dashed rgba(201, 169, 110, 0.2);
  padding: 0.7rem 1.5rem;
  border-radius: 4px;
}

/* ---------- フッター ---------- */
.footer {
  padding: 2.5rem 1.5rem;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: var(--color-deep);
}

.footer__name {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
  letter-spacing: 0.1em;
}

.footer__copy {
  font-size: 0.75rem;
  color: rgba(160, 154, 146, 0.5);
  letter-spacing: 0.05em;
}

/* ---------- sp-only ---------- */
.sp-only {
  display: none;
}

/* ---------- レスポンシブ ---------- */
@media (max-width: 768px) {
  .solution {
    grid-template-columns: 1fr;
  }

  .solution__image-wrap {
    height: 260px;
  }

  .solution__image-wrap::after {
    background: linear-gradient(to bottom, transparent 60%, var(--color-surface));
  }

  .solution__content {
    padding: 3rem 1.5rem;
    transform: translateY(30px);
  }

  .solution__content.is-visible {
    transform: translateY(0);
  }

  .sp-only {
    display: inline;
  }

  .offer__cards {
    max-width: 100%;
  }

  .cta__info {
    grid-template-columns: 1fr 1fr;
  }

  .hero__content {
    padding-top: 7rem;
  }

  .reasons__image-center {
    height: 200px;
  }
}

@media (max-width: 480px) {
  .cta__info {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .cta__info-item {
    align-items: center;
  }
}