/* =============================================
   HORIZON INNOVATION — roomcare.css
   商品詳細ページ（ルームケアコート）
   カラーパレット:
     Navy  : #0D1B2A
     Cream : #F7F5F0
     Gold  : #CBA45E  (アクセント・ゴールド)
     Sage  : #A5B89A
     Warm  : #8B7355
     Gray  : #333333
     Teal  : #2A5C5A  (ルームケアコート固有アクセント)
============================================= */

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy:        #0D1B2A;
  --navy-light:  #1a2f45;
  --cream:       #F7F5F0;
  --cream-dark:  #ede9e0;
  --cream-mid:   #e5dfd4;
  --gold:        #CBA45E;
  --gold-light:  #d9bb82;
  --teal:        #2A5C5A;
  --teal-light:  #3d7b78;
  --teal-pale:   #e8f2f1;
  --sage:        #A5B89A;
  --sage-light:  #c2d1bb;
  --warm:        #8B7355;
  --gray:        #333333;
  --gray-mid:    #666666;
  --gray-light:  #999999;
  --white:       #ffffff;

  --font-serif: 'Noto Serif JP', 'Cormorant Garamond', serif;
  --font-sans:  'Noto Sans JP', sans-serif;
  --font-en:    'Cormorant Garamond', serif;

  --transition:      0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-fast: 0.2s ease;

  --max-w:    1200px;
  --side-pad: clamp(20px, 5vw, 80px);
}

html { scroll-behavior: smooth; font-size: 16px; scroll-padding-top: 70px; }

body {
  font-family: var(--font-sans);
  color: var(--gray);
  background: var(--cream);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

a { text-decoration: none; color: inherit; }

ul { list-style: none; }

/* ===== IMAGE PLACEHOLDER ===== */
img[src=""], img:not([src]) {
  background: linear-gradient(135deg, var(--cream-dark) 0%, var(--cream-mid) 100%);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  transform: translateX(-101%);
  transition: transform var(--transition);
  z-index: -1;
}
.btn:hover::before { transform: translateX(0); }

.btn--teal {
  background: var(--teal);
  color: var(--white);
  border-color: var(--teal);
  font-size: 0.9rem;
  padding: 16px 36px;
}
.btn--teal::before { background: var(--teal-light); }

.btn--navy {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
  font-size: 0.9rem;
  padding: 16px 40px;
}
.btn--navy::before { background: var(--navy-light); }

.btn__arrow { transition: transform var(--transition-fast); }
.btn:hover .btn__arrow { transform: translateX(4px); }

/* ===== SECTION LABEL ===== */
.section-label {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 32px;
}
.section-label__num {
  font-family: var(--font-en);
  font-size: 3rem;
  font-weight: 300;
  color: var(--cream-mid);
  line-height: 1;
  letter-spacing: -0.02em;
}
.section-label__title {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--navy);
  letter-spacing: 0.1em;
}
.section-label__sub {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 300;
  color: var(--gray-light);
  letter-spacing: 0.05em;
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition);
}
.header.scrolled {
  background: rgba(13, 27, 42, 0.97);
  box-shadow: 0 2px 20px rgba(0,0,0,0.15);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--side-pad);
  height: 70px;
  max-width: calc(var(--max-w) + var(--side-pad) * 2);
  margin: 0 auto;
}
.header__logo {
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.header--brand .header__logo-text,
.header--solid .header__logo-text {
  font-family: var(--font-en);
  font-size: 1.25rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--white);
}
.header__nav-list {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2vw, 32px);
}
.header__nav-list a {
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: rgba(255,255,255,0.85);
  transition: color var(--transition-fast);
  position: relative;
  padding-bottom: 2px;
}
.header__nav-list a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 1px;
  background: var(--teal-light);
  transition: width var(--transition);
}
.header__nav-list a:hover { color: var(--white); }
.header__nav-list a:hover::after { width: 100%; }

.header__nav-cta {
  background: var(--teal) !important;
  color: var(--white) !important;
  padding: 8px 18px;
  border-radius: 2px;
  font-weight: 500 !important;
}
.header__nav-cta::after { display: none !important; }

.header__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  width: 32px;
  height: 32px;
  position: relative;
  z-index: 1001;
}
.header__hamburger span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--white);
  transition: transform 0.3s ease, opacity 0.2s ease;
  transform-origin: center;
}
.header__hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.header__hamburger.open span:nth-child(2) { opacity: 0; }
.header__hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ===== PAGE HERO ===== */
.page-hero {
  position: relative;
  height: 100svh;
  min-height: 600px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.page-hero__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #0D1B2A 0%, #1a3535 40%, #2A5C5A 100%);
}
.page-hero__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transform: scale(1.05);
  animation: heroZoom 12s ease-out forwards;
}
@keyframes heroZoom {
  to { transform: scale(1); }
}
.page-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(13,27,42,0.82) 0%,
    rgba(13,27,42,0.50) 55%,
    rgba(13,27,42,0.18) 100%
  );
}
.page-hero__content {
  position: relative;
  z-index: 1;
  padding: 0 var(--side-pad);
  max-width: calc(var(--max-w) + var(--side-pad) * 2);
  margin: 0 auto;
  width: 100%;
  padding-top: 70px;
}
.page-hero__eyebrow {
  font-family: var(--font-en);
  font-size: 0.8rem;
  font-weight: 300;
  letter-spacing: 0.22em;
  color: rgba(255,255,255,0.65);
  margin-bottom: 16px;
  animation: fadeInUp 0.8s 0.3s both;
}
.page-hero__title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--white);
  line-height: 1.5;
  margin-bottom: 16px;
  animation: fadeInUp 0.8s 0.45s both;
}
.page-hero__title-sub {
  display: block;
  font-size: clamp(1.3rem, 3vw, 2rem);
  font-weight: 300;
  color: rgba(255,255,255,0.9);
}
.page-hero__catch {
  font-family: var(--font-serif);
  font-size: clamp(0.78rem, 1.3vw, 0.92rem);
  font-weight: 300;
  color: rgba(255,255,255,0.75);
  letter-spacing: 0.06em;
  margin-bottom: 24px;
  line-height: 2;
  animation: fadeInUp 0.8s 0.6s both;
}
.page-hero__features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  animation: fadeInUp 0.8s 0.75s both;
}
.page-hero__feature-tag {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--white);
  border: 1px solid rgba(42,92,90,0.8);
  background: rgba(42,92,90,0.25);
  padding: 5px 14px;
  border-radius: 20px;
}

/* ===== SCROLL INDICATOR ===== */
.page-hero__scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 2;
  animation: fadeIn 1s 1.2s both;
}
.page-hero__scroll-line {
  display: block;
  width: 1px;
  height: 48px;
  background: rgba(255,255,255,0.5);
  animation: scrollPulse 2s 1.8s infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.5; transform: scaleY(1); }
  50%       { opacity: 1;   transform: scaleY(1.1); }
}
.page-hero__scroll-text {
  font-family: var(--font-en);
  font-size: 0.65rem;
  font-weight: 300;
  letter-spacing: 0.25em;
  color: rgba(255,255,255,0.6);
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
  background: var(--white);
  border-bottom: 1px solid var(--cream-dark);
  position: relative;
  z-index: 1;
}
.breadcrumb__inner {
  max-width: calc(var(--max-w) + var(--side-pad) * 2);
  margin: 0 auto;
  padding: 0 var(--side-pad);
}
.breadcrumb__list {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 0;
  list-style: none;
  flex-wrap: wrap;
}
.breadcrumb__list li {
  font-size: 0.72rem;
  font-weight: 300;
  color: var(--gray-light);
  letter-spacing: 0.04em;
}
.breadcrumb__list a {
  color: var(--gray-mid);
  transition: color var(--transition-fast);
}
.breadcrumb__list a:hover { color: var(--navy); }

/* ===== COMMON SECTION STYLES ===== */
.concept,
.features,
.mechanism,
.scenes,
.points,
.premium,
.btob,
.specs,
.cta-section {
  padding: clamp(60px, 9vw, 110px) 0;
}

/* ===== 01. CONCEPT ===== */
.concept { background: var(--white); }
.concept__inner {
  max-width: calc(var(--max-w) + var(--side-pad) * 2);
  margin: 0 auto;
  padding: 0 var(--side-pad);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: center;
}
.concept__image-wrap {
  aspect-ratio: 3/2;
  overflow: hidden;
  border-radius: 2px;
}
.concept__image-wrap img {
  width: 100%;
  height: 100%;
  transition: transform 0.8s ease;
}
.concept__image-wrap:hover img { transform: scale(1.04); }

.concept__text-wrap { padding: clamp(0px, 2vw, 20px) 0; }
.concept__title {
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  font-weight: 500;
  color: var(--navy);
  letter-spacing: 0.06em;
  margin-bottom: 24px;
  line-height: 1.5;
}
.concept__body {
  font-size: clamp(0.82rem, 1.2vw, 0.9rem);
  font-weight: 300;
  color: var(--gray-mid);
  line-height: 2.1;
  letter-spacing: 0.04em;
}

/* ===== 02. FEATURES ===== */
.features { background: var(--cream); }
.features__inner {
  max-width: calc(var(--max-w) + var(--side-pad) * 2);
  margin: 0 auto;
  padding: 0 var(--side-pad);
}
.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 3vw, 32px);
  margin-top: 8px;
}
.features__grid--4col {
  grid-template-columns: repeat(4, 1fr);
}
.feature-card {
  background: var(--white);
  border-radius: 2px;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(13,27,42,0.1);
}
.feature-card__img-wrap {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--cream-dark);
}
.feature-card__img-wrap img {
  width: 100%;
  height: 100%;
  transition: transform 0.6s ease;
}
.feature-card:hover .feature-card__img-wrap img { transform: scale(1.06); }
.feature-card__body {
  padding: clamp(16px, 2vw, 22px);
}
.feature-card__title {
  font-family: var(--font-serif);
  font-size: clamp(0.88rem, 1.2vw, 1rem);
  font-weight: 500;
  color: var(--navy);
  letter-spacing: 0.06em;
  margin-bottom: 10px;
  line-height: 1.4;
}
.feature-card__text {
  font-size: 0.78rem;
  font-weight: 300;
  color: var(--gray-mid);
  line-height: 1.9;
  letter-spacing: 0.03em;
}

/* ===== 03. MECHANISM ===== */
.mechanism { background: var(--teal-pale); }
.mechanism__inner {
  max-width: calc(var(--max-w) + var(--side-pad) * 2);
  margin: 0 auto;
  padding: 0 var(--side-pad);
}
.mechanism .section-label__num { color: rgba(42,92,90,0.15); }
.mechanism .section-label__title { color: var(--teal); }
.mechanism__title {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2vw, 1.6rem);
  font-weight: 500;
  color: var(--navy);
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}
.mechanism__lead {
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--gray-mid);
  line-height: 2;
  letter-spacing: 0.04em;
  margin-bottom: 56px;
  max-width: 700px;
}
.mechanism__steps {
  display: flex;
  align-items: stretch;
  gap: 0;
}
.mechanism__step {
  flex: 1;
  background: var(--white);
  border-radius: 2px;
  overflow: hidden;
  border: 1px solid rgba(42,92,90,0.15);
}
.mechanism__step-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 clamp(8px, 1.5vw, 20px);
  font-family: var(--font-en);
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: var(--teal-light);
  font-weight: 300;
  flex-shrink: 0;
}
.mechanism__step-img-wrap {
  aspect-ratio: 3/2;
  overflow: hidden;
  background: var(--cream-dark);
}
.mechanism__step-img-wrap img {
  width: 100%;
  height: 100%;
  transition: transform 0.6s ease;
}
.mechanism__step:hover .mechanism__step-img-wrap img { transform: scale(1.04); }
.mechanism__step-body {
  padding: clamp(16px, 2vw, 24px);
}
.mechanism__step-num {
  font-family: var(--font-en);
  font-size: 0.7rem;
  font-weight: 300;
  letter-spacing: 0.18em;
  color: var(--teal);
  margin-bottom: 8px;
}
.mechanism__step-title {
  font-family: var(--font-serif);
  font-size: clamp(0.9rem, 1.4vw, 1.05rem);
  font-weight: 500;
  color: var(--navy);
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}
.mechanism__step-text {
  font-size: 0.78rem;
  font-weight: 300;
  color: var(--gray-mid);
  line-height: 1.9;
  letter-spacing: 0.03em;
}

/* ===== 04. SCENES ===== */
.scenes { background: var(--cream); }
.scenes__inner {
  max-width: calc(var(--max-w) + var(--side-pad) * 2);
  margin: 0 auto;
  padding: 0 var(--side-pad);
}
.scenes__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(12px, 2vw, 20px);
}
.scene-card {
  overflow: hidden;
  border-radius: 2px;
  background: var(--white);
  transition: transform var(--transition), box-shadow var(--transition);
}
.scene-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(13,27,42,0.1);
}
.scene-card__img-wrap {
  aspect-ratio: 5/4;
  overflow: hidden;
  background: var(--cream-dark);
}
.scene-card__img-wrap img {
  width: 100%;
  height: 100%;
  transition: transform 0.6s ease;
}
.scene-card:hover .scene-card__img-wrap img { transform: scale(1.06); }
.scene-card__body { padding: 16px 16px 20px; }
.scene-card__title {
  font-family: var(--font-serif);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--navy);
  letter-spacing: 0.04em;
  margin-bottom: 6px;
  line-height: 1.5;
}
.scene-card__text {
  font-size: 0.72rem;
  font-weight: 300;
  color: var(--gray-light);
  line-height: 1.8;
  letter-spacing: 0.03em;
}

/* ===== 05. POINTS ===== */
.points { background: var(--white); }
.points__inner {
  max-width: calc(var(--max-w) + var(--side-pad) * 2);
  margin: 0 auto;
  padding: 0 var(--side-pad);
}
.points__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 3vw, 32px);
}
.point-card {
  background: var(--cream);
  border-radius: 2px;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.point-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(13,27,42,0.1);
}
.point-card__num {
  font-family: var(--font-en);
  font-size: 0.72rem;
  font-weight: 300;
  letter-spacing: 0.18em;
  color: var(--teal);
  padding: clamp(16px, 2vw, 24px) clamp(16px, 2vw, 24px) 0;
}
.point-card__img-wrap {
  aspect-ratio: 3/2;
  overflow: hidden;
  background: var(--cream-dark);
  margin-top: 12px;
}
.point-card__img-wrap img {
  width: 100%;
  height: 100%;
  transition: transform 0.6s ease;
}
.point-card:hover .point-card__img-wrap img { transform: scale(1.06); }
.point-card__body {
  padding: clamp(16px, 2vw, 24px);
}
.point-card__title {
  font-family: var(--font-serif);
  font-size: clamp(0.95rem, 1.4vw, 1.1rem);
  font-weight: 500;
  color: var(--navy);
  letter-spacing: 0.04em;
  margin-bottom: 12px;
  line-height: 1.5;
}
.point-card__text {
  font-size: 0.82rem;
  font-weight: 300;
  color: var(--gray-mid);
  line-height: 1.9;
  letter-spacing: 0.03em;
}

/* ===== 06. PREMIUM（導入実績・お客様の声） ===== */
.premium { background: var(--cream); }
.premium__inner {
  max-width: calc(var(--max-w) + var(--side-pad) * 2);
  margin: 0 auto;
  padding: 0 var(--side-pad);
}
.premium__title {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  font-weight: 500;
  color: var(--navy);
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}
.premium__lead {
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--gray-mid);
  line-height: 2;
  letter-spacing: 0.04em;
  margin-bottom: 56px;
  max-width: 700px;
}
.premium__values {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(16px, 2.5vw, 32px);
}
.premium__value {
  text-align: center;
  overflow: hidden;
  background: var(--white);
  border-radius: 2px;
  border: 1px solid var(--cream-dark);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.premium__value:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(13,27,42,0.08);
  border-color: rgba(42,92,90,0.3);
}
.premium__value-img-wrap {
  aspect-ratio: 3/2;
  overflow: hidden;
  background: var(--cream-dark);
  margin-bottom: 0;
}
.premium__value-img-wrap img {
  width: 100%;
  height: 100%;
  transition: transform 0.6s ease;
}
.premium__value:hover .premium__value-img-wrap img { transform: scale(1.06); }
.premium__value-title {
  font-family: var(--font-serif);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--navy);
  letter-spacing: 0.05em;
  margin: 20px 16px 8px;
  line-height: 1.5;
}
.premium__value-text {
  font-size: 0.73rem;
  font-weight: 300;
  color: var(--gray-light);
  line-height: 1.8;
  letter-spacing: 0.03em;
  padding: 0 16px 24px;
  text-align: left;
}

/* ===== 06b. VOICES カード式リスト ===== */
.voices-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(16px, 2.5vw, 28px);
}
.voices-card {
  background: var(--white);
  border: 1px solid var(--cream-dark);
  border-top: 3px solid var(--teal);
  border-radius: 2px;
  padding: 24px 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition), box-shadow var(--transition);
}
.voices-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(13,27,42,0.08);
}
.voices-card__name {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--navy);
  letter-spacing: 0.06em;
  line-height: 1.6;
  text-align: center;
}

/* ===== 07. BTOB（購入方法） ===== */
.btob { background: var(--white); }
.btob__inner {
  max-width: calc(var(--max-w) + var(--side-pad) * 2);
  margin: 0 auto;
  padding: 0 var(--side-pad);
}
.btob__content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: clamp(40px, 5vw, 80px);
  align-items: start;
}
.btob__merit-list { display: flex; flex-direction: column; gap: 16px; }
.btob__merit-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-family: var(--font-serif);
  font-size: clamp(0.85rem, 1.2vw, 0.95rem);
  font-weight: 400;
  color: var(--navy);
  letter-spacing: 0.04em;
  line-height: 1.6;
}
.btob__merit-check {
  color: var(--teal);
  font-size: 1.1rem;
  line-height: 1.4;
  flex-shrink: 0;
}
.btob__images {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(12px, 2vw, 20px);
}
.btob__image-item { text-align: center; }
.btob__image-wrap {
  aspect-ratio: 4/3;
  overflow: hidden;
  border-radius: 2px;
  margin-bottom: 10px;
  background: var(--cream-dark);
  border: 1px solid var(--cream-mid);
}
.btob__image-wrap img {
  width: 100%;
  height: 100%;
}
.btob__image-caption {
  font-size: 0.7rem;
  font-weight: 300;
  color: var(--gray-light);
  letter-spacing: 0.04em;
}

/* ===== 08. SPECS ===== */
.specs { background: var(--cream); }
.specs__inner {
  max-width: calc(var(--max-w) + var(--side-pad) * 2);
  margin: 0 auto;
  padding: 0 var(--side-pad);
}
.spec-block {
  border: 1px solid var(--cream-dark);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: clamp(24px, 3vw, 40px);
  background: var(--white);
  position: relative;
}
.spec-block__badge {
  position: absolute;
  top: 20px;
  left: 20px;
  background: var(--teal);
  color: var(--white);
  font-family: var(--font-serif);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  padding: 4px 14px;
  border-radius: 2px;
  z-index: 1;
}
.spec-block__layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  min-height: 360px;
}
.spec-block__img-wrap {
  overflow: hidden;
  background: var(--cream-dark);
}
.spec-block__img-wrap img {
  width: 100%;
  height: 100%;
}
.spec-block__detail {
  padding: clamp(24px, 3vw, 40px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.spec-block__title {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 500;
  color: var(--navy);
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}
.spec-block__desc {
  font-size: 0.82rem;
  font-weight: 300;
  color: var(--gray-mid);
  line-height: 1.9;
  letter-spacing: 0.03em;
  margin-bottom: 24px;
}
.spec-table {
  width: 100%;
  border-collapse: collapse;
}
.spec-table th,
.spec-table td {
  padding: 10px 12px;
  font-size: 0.78rem;
  font-weight: 300;
  letter-spacing: 0.03em;
  border-bottom: 1px solid var(--cream-mid);
  line-height: 1.8;
  text-align: left;
}
.spec-table th {
  width: 30%;
  font-weight: 500;
  color: var(--navy);
  white-space: nowrap;
}
.spec-table td { color: var(--gray-mid); }
.spec-table tr:last-child th,
.spec-table tr:last-child td { border-bottom: none; }

/* sub blocks row */
.spec-block-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(16px, 2.5vw, 32px);
  margin-bottom: clamp(24px, 3vw, 40px);
}
.spec-block--sub {
  padding: clamp(24px, 3vw, 36px);
  margin-bottom: 0;
}
.spec-block__size-label {
  font-family: var(--font-en);
  font-size: 1.1rem;
  font-weight: 300;
  color: var(--teal);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}
.spec-block__img-wrap--single {
  aspect-ratio: 3/2;
  height: auto;
  margin-bottom: 16px;
  flex: none;
}

/* ===== 09. CTA SECTION ===== */
.cta-section {
  background: var(--navy);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(42,92,90,0.2) 0%, transparent 68%);
  pointer-events: none;
}
.cta-section__inner {
  position: relative;
  z-index: 1;
  max-width: calc(var(--max-w) + var(--side-pad) * 2);
  margin: 0 auto;
  padding: 0 var(--side-pad);
}
.cta-section .section-label { justify-content: center; }
.cta-section .section-label__num { color: rgba(255,255,255,0.1); }
.cta-section .section-label__title { color: var(--white); }
.cta-section .section-label__sub { color: rgba(255,255,255,0.4); }

.cta-section__title {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  font-weight: 400;
  color: var(--white);
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}
.cta-section__lead {
  font-size: 0.82rem;
  font-weight: 300;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.06em;
  margin-bottom: 40px;
}
.cta-section__buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}
.btn--cta {
  min-width: 240px;
  padding: 18px 40px;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  border-radius: 2px;
}
.btn--contact {
  background: var(--teal);
  color: var(--white);
  border-color: var(--teal);
}
.btn--contact::before { background: var(--teal-light); }
.btn--document {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.4);
}
.btn--document::before { background: rgba(255,255,255,0.1); }

/* ===== BRAND NAVIGATION ===== */
.brand-nav {
  background: var(--cream);
  padding: clamp(60px, 9vw, 110px) 0;
  border-top: 1px solid var(--cream-dark);
}
.brand-nav__inner {
  max-width: calc(var(--max-w) + var(--side-pad) * 2);
  margin: 0 auto;
  padding: 0 var(--side-pad);
}
.brand-nav__header {
  text-align: center;
  margin-bottom: clamp(40px, 5vw, 64px);
}
.brand-nav__eyebrow {
  font-family: var(--font-en);
  font-size: 0.78rem;
  font-weight: 300;
  letter-spacing: 0.22em;
  color: var(--teal);
  margin-bottom: 12px;
}
.brand-nav__title {
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 2.5vw, 1.9rem);
  font-weight: 500;
  color: var(--navy);
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}
.brand-nav__lead {
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--gray-mid);
  letter-spacing: 0.04em;
}
.brand-nav__category {
  margin-bottom: clamp(48px, 6vw, 72px);
}
.brand-nav__cat-label {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--cream-dark);
}
.brand-nav__cat-num {
  font-family: var(--font-en);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  background: var(--teal);
  color: var(--white);
  padding: 3px 12px;
  border-radius: 2px;
}
.brand-nav__cat-name {
  font-family: var(--font-serif);
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--gray-mid);
  letter-spacing: 0.06em;
}
.brand-nav__cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(16px, 3vw, 28px);
}
.brand-nav__card {
  display: flex;
  gap: 20px;
  background: var(--white);
  border: 1px solid var(--cream-dark);
  border-radius: 2px;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
  color: inherit;
}
.brand-nav__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(13,27,42,0.1);
}
.brand-nav__card--current {
  border-color: var(--teal);
  box-shadow: 0 0 0 1px var(--teal), 0 6px 24px rgba(42,92,90,0.15);
}
.brand-nav__card--coming {
  opacity: 0.6;
  pointer-events: none;
}
.brand-nav__card-img-wrap {
  width: 120px;
  flex-shrink: 0;
  background: var(--cream-dark);
  overflow: hidden;
}
.brand-nav__card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.brand-nav__card:hover .brand-nav__card-img-wrap img { transform: scale(1.05); }
.brand-nav__card-img-wrap--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--cream-mid);
}
.brand-nav__card-coming-text {
  font-family: var(--font-en);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  color: var(--gray-light);
  text-align: center;
  line-height: 1.6;
}
.brand-nav__card-body {
  padding: clamp(16px, 2vw, 24px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.brand-nav__card-label {
  font-family: var(--font-en);
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  color: var(--teal);
  margin-bottom: 6px;
}
.brand-nav__card--coming .brand-nav__card-label { color: var(--gray-light); }
.brand-nav__card-title {
  font-family: var(--font-serif);
  font-size: clamp(0.88rem, 1.4vw, 1rem);
  font-weight: 500;
  color: var(--navy);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
  line-height: 1.4;
}
.brand-nav__card-desc {
  font-size: 0.75rem;
  font-weight: 300;
  color: var(--gray-mid);
  line-height: 1.7;
  letter-spacing: 0.02em;
}
/* 他カテゴリ導線 */
.brand-nav__other-cats {
  border-top: 1px solid var(--cream-dark);
  padding-top: clamp(40px, 5vw, 56px);
}
.brand-nav__other-label {
  font-family: var(--font-en);
  font-size: 0.72rem;
  font-weight: 300;
  letter-spacing: 0.18em;
  color: var(--gray-light);
  margin-bottom: 20px;
}
.brand-nav__other-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(12px, 2vw, 20px);
  align-items: stretch;
}
.brand-nav__other-card {
  border-radius: 2px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
}
.brand-nav__other-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 40px rgba(13,27,42,0.15);
}
.brand-nav__other-card-img {
  aspect-ratio: 3/2;
  overflow: hidden;
  position: relative;
  background: var(--teal);
}
.brand-nav__other-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s ease;
}
.brand-nav__other-card:hover .brand-nav__other-card-img img { transform: scale(1.06); }
.brand-nav__other-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(13,27,42,0.72) 0%, transparent 60%);
}
.brand-nav__other-card-body {
  background: var(--teal);
  padding: clamp(16px, 2vw, 22px);
}
.brand-nav__other-card-body--brand {
  background: var(--navy);
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(16px, 2vw, 22px);
}
.brand-nav__other-card-en {
  font-family: var(--font-en);
  font-size: 0.65rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: var(--teal-pale);
  margin-bottom: 4px;
}
.brand-nav__other-card-title {
  font-family: var(--font-serif);
  font-size: clamp(0.85rem, 1.3vw, 1rem);
  font-weight: 500;
  color: var(--white);
  letter-spacing: 0.05em;
  margin-bottom: 6px;
  line-height: 1.4;
}
.brand-nav__other-card-desc {
  font-size: 0.72rem;
  font-weight: 300;
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
  letter-spacing: 0.02em;
  margin-bottom: 12px;
}
.brand-nav__other-card-link {
  font-family: var(--font-en);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--teal-pale);
  transition: color var(--transition-fast);
}
.brand-nav__other-card:hover .brand-nav__other-card-link { color: var(--white); }

/* ===== FOOTER ===== */
.footer {
  background: var(--navy);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: clamp(50px, 7vw, 80px) 0 0;
}
.footer__inner {
  max-width: calc(var(--max-w) + var(--side-pad) * 2);
  margin: 0 auto;
  padding: 0 var(--side-pad);
}
.footer__top {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 40px;
  align-items: start;
  padding-bottom: 40px;
}
.footer__logo {
  font-family: var(--font-en);
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--white);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}
.footer__tagline {
  font-size: 0.75rem;
  font-weight: 300;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.08em;
}
.footer__nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
}
.footer__nav a {
  font-size: 0.78rem;
  font-weight: 300;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.05em;
  transition: color var(--transition-fast);
}
.footer__nav a:hover { color: var(--white); }
.footer__social {
  display: flex;
  gap: 16px;
}
.footer__social-link {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
  color: rgba(255,255,255,0.6);
  transition: border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
}
.footer__social-link:hover {
  border-color: var(--teal-light);
  color: var(--teal-light);
  background: rgba(42,92,90,0.15);
}
.footer__social-link svg { width: 16px; height: 16px; }
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
}
.footer__copy {
  font-size: 0.7rem;
  font-weight: 300;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.05em;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }
.reveal-delay-5 { transition-delay: 0.40s; }

/* ===== RESPONSIVE ===== */

/* Tablet (≤1024px) */
@media (max-width: 1024px) {
  .features__grid--4col { grid-template-columns: repeat(2, 1fr); }
  .premium__values { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .voices-list { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .scenes__grid { grid-template-columns: repeat(2, 1fr); }
  .mechanism__steps { flex-direction: column; }
  .mechanism__step-arrow {
    transform: rotate(90deg);
    padding: 8px 0;
    font-size: 1.4rem;
  }
}

@media (max-width: 900px) {
  .brand-nav__cards { grid-template-columns: 1fr; }
  .brand-nav__other-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .brand-nav__cards { grid-template-columns: 1fr; }
  .brand-nav__other-grid { grid-template-columns: 1fr; }
  .brand-nav__card { flex-direction: column; }
  .brand-nav__card-img-wrap { width: 100%; height: 140px; }
}

/* Tablet (≤900px) */
@media (max-width: 900px) {
  .header__nav { display: none; }
  .header__hamburger { display: flex; }

  .header__nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 0;
    background: rgba(13,27,42,0.97);
    align-items: center;
    justify-content: center;
    z-index: 999;
  }
  .header__nav.open .header__nav-list {
    flex-direction: column;
    align-items: center;
    gap: 32px;
  }
  .header__nav.open .header__nav-list a { font-size: 1.1rem; }

  .concept__inner { grid-template-columns: 1fr; gap: 32px; }
  .features__grid { grid-template-columns: 1fr 1fr; }
  .points__grid { grid-template-columns: 1fr 1fr; }
  .btob__content { grid-template-columns: 1fr; }
  .spec-block__layout { grid-template-columns: 1fr; }
  .spec-block-row { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr 1fr; }
  .footer__social { grid-column: span 2; }
}

/* Mobile (≤640px) */
@media (max-width: 640px) {
  .section-label { flex-wrap: wrap; gap: 8px; }
  .section-label__num { font-size: 2rem; }

  .features__grid { grid-template-columns: 1fr; }
  .features__grid--4col { grid-template-columns: 1fr; }
  .points__grid { grid-template-columns: 1fr; }
  .scenes__grid { grid-template-columns: 1fr; }
  .premium__values { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .voices-list { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .btob__images { grid-template-columns: 1fr; }
  .cta-section__buttons { flex-direction: column; }
  .btn--cta { width: 100%; min-width: unset; }
  .footer__top { grid-template-columns: 1fr; }
  .footer__social { grid-column: 1; }
  .page-hero__features { gap: 6px; }
}

@media (max-width: 400px) {
  .premium__values { grid-template-columns: 1fr; }
  .voices-list { grid-template-columns: 1fr; }
}