:root {
    --ivory: #F7F4EF;
    --cream: #EDE8DF;
    --gold: #B8975A;
    --gold-light: #D4B483;
    --dark: #1A1814;
    --charcoal: #2D2B27;
    --slate: #5C5850;
    --warm-white: #FDFBF8;
    --sage: #8A9485;
    --taupe: #A09880;
  }

  html { overflow-x: hidden; }
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

  html { scroll-behavior: smooth; }

  body {
    background: var(--dark);
    color: var(--ivory);
    font-family: 'Noto Serif JP', serif;
    font-weight: 400;
    font-size: 16px;
    overflow-x: hidden;
    -webkit-text-size-adjust: 100%;
  }


  .hero-title-img {
    opacity: 0;
    animation: fadeUp 1.2s ease 0.5s forwards;
    margin-bottom: 16px;
  }
  .hero-title-img img {
    max-width: 800px;
    width: 80%;
    height: auto;
    display: block;
    filter: drop-shadow(0 2px 12px rgba(0,0,0,0.6)) drop-shadow(0 4px 32px rgba(0,0,0,0.4));
  }
  /* ── NAV ── */
  nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 28px 60px;
    background: linear-gradient(to bottom, rgba(26,24,20,0.95), transparent);
  }
  .nav-logo {
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 13px;
    letter-spacing: 0.35em;
    color: var(--gold-light);
    text-transform: uppercase;
  }
  .nav-links {
    display: flex;
    gap: 40px;
    list-style: none;
  }
  .nav-links a {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 13px;
    letter-spacing: 0.2em;
    color: rgba(247,244,239,0.6);
    text-decoration: none;
    text-transform: uppercase;
    transition: color 0.3s;
  }
  .nav-links a:hover { color: var(--gold-light); }

  /* ── HERO ── */
  .hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
    display: flex;
    align-items: flex-start;
  }
  .hero-bg {
    position: absolute;
    inset: 0;
    background:
      linear-gradient(to bottom, rgba(26,24,20,0.6) 0%, rgba(26,24,20,0.3) 20%, rgba(26,24,20,0.05) 42%, rgba(26,24,20,0.0) 60%, rgba(26,24,20,0.5) 88%, rgba(26,24,20,1) 100%),
      url('../images/hero-bg.jpg') center 40% / cover no-repeat;
  }
  .hero-content {
    position: relative;
    z-index: 2;
    padding: 90px 10% 0;
    max-width: 860px;
  }
  .hero-eyebrow {
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 11px;
    letter-spacing: 0.5em;
    color: var(--gold);
    text-transform: uppercase;
    margin-bottom: 24px;
    opacity: 0;
    animation: fadeUp 1s ease 0.3s forwards;
  }
  /* .hero-title removed — replaced by .hero-title-img */
  .hero-subtitle {
    font-family: 'Noto Serif JP', serif;
    font-weight: 500;
    font-size: clamp(16px, 2vw, 23px);
    font-style: normal;
    color: var(--warm-white);
    letter-spacing: 0.18em;
    margin-bottom: 28px;
    opacity: 0;
    animation: fadeUp 1.2s ease 0.7s forwards;
    text-shadow: 0 1px 10px rgba(0,0,0,0.7);
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(184,151,90,0.35);
    display: inline-block;
  }
  .hero-desc {
    font-size: 15px;
    line-height: 2.2;
    color: rgba(247,244,239,0.95);
    max-width: 540px;
    letter-spacing: 0.08em;
    opacity: 0;
    animation: fadeUp 1.2s ease 0.9s forwards;
    text-shadow: 0 1px 8px rgba(0,0,0,0.8);
    background: linear-gradient(to right, rgba(26,24,20,0.55), rgba(26,24,20,0.1));
    padding: 18px 22px;
    border-left: 2px solid rgba(184,151,90,0.7);
  }

  .hero-desc-line {
    margin: 0;
  }
  .hero-desc-line + .hero-desc-line {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid rgba(184,151,90,0.2);
  }
  .hero-scroll {
    position: absolute;
    bottom: 48px;
    right: 60px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    opacity: 0;
    animation: fadeIn 1s ease 1.5s forwards;
  }
  .hero-scroll span {
    font-family: 'Montserrat', sans-serif;
    font-size: 9px;
    letter-spacing: 0.4em;
    color: var(--gold);
    text-transform: uppercase;
    writing-mode: vertical-rl;
  }
  .scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--gold), transparent);
    animation: scrollDown 2s ease-in-out 2s infinite;
  }

  /* ── SECTION COMMON ── */
  section { position: relative; }

  .section-label {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 11px;
    letter-spacing: 0.5em;
    color: var(--gold);
    text-transform: uppercase;
    margin-bottom: 20px;
  }
  .section-label::before {
    content: '';
    display: inline-block;
    width: 30px;
    height: 1px;
    background: var(--gold);
    margin-right: 16px;
    vertical-align: middle;
  }

  .gold-rule {
    width: 60px;
    height: 1px;
    background: var(--gold);
    margin: 32px auto;
  }

  /* ── CONCEPT ── */
  .concept {
    background: var(--dark);
    padding: 120px 6%;
    display: grid;
    grid-template-columns: 5fr 7fr;
    gap: 60px;
    align-items: center;
  }
  .concept-text {}
  .concept-heading {
    font-family: 'Playfair Display', serif;
    font-weight: 500;
    font-size: clamp(38px, 4.2vw, 56px);
    line-height: 1.3;
    color: var(--warm-white);
    margin-bottom: 40px;
  }
  .concept-heading em {
    font-style: italic;
    color: var(--gold-light);
    display: block;
  }
  .concept-body {
    font-size: 16px;
    line-height: 2.4;
    font-weight: 500;
    color: rgba(247,244,239,0.92);
    letter-spacing: 0.05em;
  }
  .concept-body p + p { margin-top: 24px; }


  .concept-image {
    position: relative;
  }
  .concept-image img {
    width: 100%;
    height: 560px;
    object-fit: cover;
    object-position: center center;
    display: block;
  }
  .concept-image::before {
    content: '';
    position: absolute;
    top: -20px; left: -20px;
    right: 20px; bottom: 20px;
    border: 1px solid rgba(184,151,90,0.25);
    z-index: -1;
  }
  .concept-image::after {
    content: 'Grand Grace';
    position: absolute;
    bottom: -40px; right: 0;
    font-family: 'Playfair Display', serif;
    font-style: italic;
    font-size: 80px;
    color: rgba(184,151,90,0.06);
    white-space: nowrap;
    pointer-events: none;
  }
  /* Desktop ext-img height matches concept-image */
  .exterior-switcher {
    position: relative;
  }
  .exterior-switcher #ext-img {
    width: 100%;
    height: 560px;
    object-fit: cover;
    object-position: center 30%;
    display: block;
    transition: opacity 0.4s ease;
  }
  .ext-tabs {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    display: flex;
    gap: 1px;
    background: rgba(26,24,20,0.3);
  }
  .ext-tab {
    flex: 1;
    position: relative;
    padding: 20px 24px 18px;
    background: rgba(26,24,20,0.72);
    border: none;
    border-top: 2px solid transparent;
    color: rgba(247,244,239,0.5);
    cursor: pointer;
    text-align: left;
    transition: all 0.35s ease;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    overflow: hidden;
  }
  .ext-tab::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(184,151,90,0.08), transparent);
    opacity: 0;
    transition: opacity 0.35s ease;
  }
  .ext-tab:hover::before { opacity: 1; }
  .ext-tab-label {
    display: block;
    font-family: 'Montserrat', sans-serif;
    font-size: 9px;
    font-weight: 500;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: rgba(184,151,90,0.6);
    margin-bottom: 6px;
    transition: color 0.35s ease;
  }
  .ext-tab-name {
    display: block;
    font-family: 'Noto Serif JP', serif;
    font-style: normal;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.12em;
    color: rgba(247,244,239,0.65);
    transition: color 0.35s ease;
  }
  .ext-tab-bar {
    display: block;
    position: absolute;
    bottom: 0; left: 0;
    height: 2px;
    width: 0;
    background: var(--gold);
    transition: width 0.4s ease;
  }
  /* Active state */
  .ext-tab.active {
    background: rgba(26,24,20,0.88);
    border-top-color: var(--gold);
    color: var(--ivory);
  }
  .ext-tab.active::before { opacity: 1; }
  .ext-tab.active .ext-tab-label {
    color: var(--gold);
  }
  .ext-tab.active .ext-tab-name {
    color: var(--warm-white);
  }
  .ext-tab.active .ext-tab-bar {
    width: 100%;
  }
  /* Hover state */
  .ext-tab:hover:not(.active) {
    background: rgba(26,24,20,0.82);
    color: rgba(247,244,239,0.85);
  }
  .ext-tab:hover:not(.active) .ext-tab-label {
    color: rgba(184,151,90,0.85);
  }
  .ext-tab:hover:not(.active) .ext-tab-name {
    color: rgba(247,244,239,0.85);
  }
  .ext-tab:hover:not(.active) .ext-tab-bar {
    width: 40%;
    opacity: 0.5;
  }

  /* ── STATS BAR ── */
  .stats-bar {
    background: linear-gradient(to right, rgba(184,151,90,0.08), rgba(184,151,90,0.15), rgba(184,151,90,0.08));
    border-top: 1px solid rgba(184,151,90,0.2);
    border-bottom: 1px solid rgba(184,151,90,0.2);
    padding: 60px 10%;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    text-align: center;
    justify-items: center;
    gap: 40px;
  }
  .stat-num {
    font-family: 'Playfair Display', serif;
    font-weight: 600;
    font-size: 52px;
    color: var(--gold);
    letter-spacing: 0.02em;
    line-height: 1;
  }
  .stat-unit {
    font-size: 16px;
    color: var(--gold-light);
  }
  .stat-label {
    font-size: 14px;
    font-weight: 600;
    color: rgba(247,244,239,0.92);
    letter-spacing: 0.15em;
    margin-top: 10px;
    text-align: center;
  }

  /* ── DESIGN FEATURES ── */
  .features {
    background: var(--charcoal);
    padding: 140px 10%;
  }
  .features-header {
    text-align: center;
    margin-bottom: 80px;
  }
  .features-heading {
    font-family: 'Playfair Display', serif;
    font-weight: 600;
    font-size: clamp(32px, 4vw, 48px);
    color: var(--warm-white);
    margin-bottom: 20px;
  }
  .features-sub {
    font-size: 14px;
    color: var(--taupe);
    letter-spacing: 0.15em;
    line-height: 2;
  }

  .features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2px;
    margin-bottom: 2px;
  }
  .feature-card {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/5;
    cursor: pointer;
  }
  .feature-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s cubic-bezier(0.25,0.46,0.45,0.94);
    filter: brightness(0.7);
  }
  .feature-card:hover img {
    transform: scale(1.05);
    filter: brightness(0.5);
  }
  .feature-card-content {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    padding: 40px 32px;
    background: linear-gradient(to top, rgba(26,24,20,0.9), transparent);
  }
  .feature-num {
    font-family: 'Playfair Display', serif;
    font-size: 11px;
    color: var(--gold);
    letter-spacing: 0.3em;
    margin-bottom: 12px;
  }
  .feature-name {
    font-size: 18px;
    font-weight: 500;
    color: var(--warm-white);
    letter-spacing: 0.1em;
    margin-bottom: 8px;
  }
  .feature-desc {
    font-size: 14px;
    font-weight: 500;
    color: rgba(247,244,239,0.92);
    line-height: 1.9;
    letter-spacing: 0.05em;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.4s ease;
  }
  .feature-card:hover .feature-desc {
    opacity: 1;
    transform: translateY(0);
  }

  .feature-card-full {
    grid-column: 1 / -1;
    aspect-ratio: 21/9;
  }
  .feature-card-wide {
    grid-column: span 2;
    aspect-ratio: 8/5;
  }


  /* ── PARAPET FEATURE ── */
  .parapet-feature {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 680px;
    background: var(--dark);
  }
  .parapet-image-col {
    position: relative;
    overflow: hidden;
  }
  .parapet-image-col img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    filter: brightness(0.92);
    transition: transform 0.9s ease;
  }
  .parapet-image-col:hover img { transform: scale(1.04); }
  .parapet-image-col::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, transparent 70%, var(--dark) 100%);
    pointer-events: none;
  }
  .parapet-text-col {
    padding: 100px 8% 100px 6%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: var(--dark);
    position: relative;
  }
  .parapet-text-col::before {
    content: '';
    position: absolute;
    top: 60px; bottom: 60px; left: 0;
    width: 1px;
    background: linear-gradient(to bottom, transparent, rgba(184,151,90,0.3), transparent);
  }
  .parapet-heading {
    font-family: 'Playfair Display', serif;
    font-weight: 500;
    font-size: clamp(28px, 3vw, 44px);
    line-height: 1.3;
    color: var(--warm-white);
    margin-bottom: 0;
  }
  .parapet-heading em {
    font-style: italic;
    color: var(--gold-light);
    display: block;
  }
  .parapet-rule {
    width: 40px;
    height: 1px;
    background: var(--gold);
    margin: 28px 0;
  }
  .parapet-body {
    font-size: 16px;
    line-height: 2.4;
    font-weight: 500;
    color: rgba(247,244,239,0.92);
    letter-spacing: 0.06em;
    margin-bottom: 40px;
    border-left: 2px solid rgba(184,151,90,0.35);
    padding-left: 20px;
  }
  .parapet-points {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 24px;
  }
  .parapet-points li {
    display: flex;
    gap: 16px;
    align-items: flex-start;
  }
  .point-icon {
    color: var(--gold);
    font-size: 10px;
    margin-top: 4px;
    flex-shrink: 0;
  }
  .parapet-points strong {
    display: block;
    font-family: 'Noto Serif JP', serif;
    font-weight: 400;
    font-size: 15px;
    color: var(--ivory);
    letter-spacing: 0.1em;
    margin-bottom: 4px;
  }
  .parapet-points p {
    font-size: 14px;
    font-weight: 500;
    line-height: 1.9;
    color: rgba(247,244,239,0.92);
    letter-spacing: 0.04em;
  }

  /* ── INTERIOR ── */
  .interior {
    background: var(--dark);
    padding: 140px 10%;
  }
  .interior-intro {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 80px;
    align-items: start;
    margin-bottom: 80px;
  }
  .interior-heading {
    font-family: 'Playfair Display', serif;
    font-weight: 600;
    font-size: clamp(32px, 4vw, 48px);
    line-height: 1.2;
    color: var(--warm-white);
    position: sticky;
    top: 120px;
  }
  .interior-heading em {
    display: block;
    font-style: italic;
    color: var(--gold-light);
  }
  .interior-text {
    font-size: 16px;
    font-weight: 500;
    line-height: 2.5;
    color: rgba(247,244,239,0.92);
    letter-spacing: 0.06em;
  }
  .interior-text p + p { margin-top: 28px; }
  .interior-gallery-single {
    width: 100%;
  }
  .interior-video-wrap-full {
    width: 100%;
    height: 640px;
    overflow: hidden;
  }
  .interior-video-wrap-full video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
  }


  .interior-video-wrap video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
  }

  .interior-video-full {
    width: 100%;
    height: 560px;
    overflow: hidden;
    margin-top: 3px;
  }
  .interior-video-full video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
  }

  /* ── FLOOR PLAN ── */
  .floorplan {
    background: var(--ivory);
    color: var(--dark);
    padding: 140px 10%;
  }
  .floorplan-header {
    text-align: center;
    margin-bottom: 80px;
  }
  .floorplan .section-label { color: var(--gold); }
  .floorplan .section-label::before { background: var(--gold); }
  .floorplan-heading {
    font-family: 'Playfair Display', serif;
    font-weight: 300;
    font-size: clamp(28px, 3vw, 42px);
    color: var(--charcoal);
    margin-bottom: 16px;
  }
  .floorplan-sub {
    font-size: 14px;
    color: var(--slate);
    letter-spacing: 0.1em;
    line-height: 2;
  }
  .plans-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
  }
  .plan-box {
    border: 1px solid rgba(90,80,60,0.15);
    padding: 40px;
    background: white;
  }
  .plan-floor {
    font-family: 'Montserrat', sans-serif;
    font-size: 10px;
    letter-spacing: 0.4em;
    color: var(--gold);
    text-transform: uppercase;
    margin-bottom: 24px;
  }
  .plan-img {
    width: 100%;
    height: 280px;
    object-fit: contain;
    display: block;
    margin-bottom: 24px;
    background: #f9f7f4;
    padding: 20px;
  }
  .plan-img-wrap {
    width: 100%;
    background: #f9f7f4;
    margin-bottom: 24px;
    position: relative;
    padding: 20px;
  }
  .plan-img-actual {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
  }
  .plan-rooms {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }
  .plan-room {
    font-size: 13px;
    letter-spacing: 0.1em;
    color: var(--slate);
    border: 1px solid rgba(90,80,60,0.2);
    padding: 4px 12px;
  }

  /* ── EXCLUSIVE ── */
  .exclusive {
    background: var(--charcoal);
    padding: 140px 10%;
    text-align: center;
  }
  .exclusive-heading {
    font-family: 'Playfair Display', serif;
    font-weight: 500;
    font-size: clamp(36px, 5vw, 64px);
    line-height: 1.2;
    color: var(--warm-white);
    margin-bottom: 32px;
  }
  .exclusive-heading em {
    font-style: italic;
    color: var(--gold);
  }
  .exclusive-text {
    font-size: 16px;
    font-weight: 500;
    line-height: 2.5;
    color: rgba(247,244,239,0.92);
    max-width: 600px;
    margin: 0 auto 60px;
    letter-spacing: 0.06em;
  }
  .store-list {
    display: inline-grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2px;
    margin: 0 auto 60px;
    border: 1px solid rgba(184,151,90,0.2);
  }
  .store-item {
    display: block;
    padding: 28px 40px;
    border: 1px solid rgba(184,151,90,0.1);
    text-align: left;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.3s, background 0.3s;
    cursor: pointer;
  }
  .store-item:hover {
    border-color: rgba(184,151,90,0.5);
    background: rgba(184,151,90,0.05);
  }
  .store-region {
    font-family: 'Montserrat', sans-serif;
    font-size: 9px;
    letter-spacing: 0.4em;
    color: var(--gold);
    text-transform: uppercase;
    margin-bottom: 8px;
  }
  .store-name {
    font-size: 16px;
    font-weight: 500;
    color: var(--ivory);
    letter-spacing: 0.1em;
    margin-bottom: 4px;
  }

  .store-brand {
    font-family: 'Montserrat', sans-serif;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: rgba(247,244,239,0.92);
    margin-bottom: 4px;
  }
  .store-city {
    font-size: 13px;
    font-weight: 500;
    color: rgba(247,244,239,0.85);
    color: rgba(247,244,239,0.35);
    letter-spacing: 0.05em;
  }

  /* ── LIFESTYLE ── */
  .lifestyle {
    position: relative;
    height: 80vh;
    min-height: 500px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
  }
  .lifestyle-bg {
    position: absolute;
    inset: 0;
    background:
      linear-gradient(to bottom, rgba(26,24,20,0.5), rgba(26,24,20,0.7)),
      url('../images/section-bg.jpg') center/cover;
  }
  .lifestyle-content {
    position: relative;
    z-index: 2;
    padding: 40px;
  }
  .lifestyle-quote {
    font-family: 'Playfair Display', serif;
    font-weight: 600;
    font-size: clamp(22px, 4vw, 42px);
    font-style: italic;
    line-height: 1.7;
    color: var(--warm-white);
    max-width: 820px;
    margin: 0 auto 40px;
    letter-spacing: 0.04em;
  }
  .lifestyle-sub {
    font-size: 12px;
    color: var(--gold-light);
    letter-spacing: 0.3em;
    text-transform: uppercase;
    font-family: 'Montserrat', sans-serif;
    font-weight: 300;
  }

  /* ── CTA ── */
  .cta-section {
    background: var(--dark);
    padding: 140px 10%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
  }
  .cta-heading {
    font-family: 'Playfair Display', serif;
    font-weight: 600;
    font-size: clamp(32px, 4vw, 52px);
    line-height: 1.2;
    color: var(--warm-white);
    margin-bottom: 24px;
  }
  .cta-heading em {
    font-style: italic;
    color: var(--gold);
    display: block;
  }
  .cta-text {
    font-size: 16px;
    font-weight: 500;
    line-height: 2.4;
    color: rgba(247,244,239,0.92);
    letter-spacing: 0.06em;
    margin-bottom: 48px;
  }
  .cta-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
  }
  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    padding: 18px 40px;
    background: var(--gold);
    color: var(--dark);
    font-family: 'Noto Serif JP', serif;
    font-size: 17px;
    letter-spacing: 0.25em;
    text-decoration: none;
    transition: all 0.3s ease;
  }
  .btn-primary:hover {
    background: var(--gold-light);
  }

  /* 大サイズ資料請求ボタン */
  .btn-primary-lg {
    padding: 24px 120px;
    min-width: 480px;
    font-size: 20px;
    letter-spacing: 0.3em;
    gap: 0;
  }

  /* CVバナー */
  .cv-banner {
    background: var(--cream);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 28px;
    padding: 60px 6%;
    text-align: center;
  }
  .cv-banner-dark {
    background: var(--charcoal);
  }
  .cv-banner-text {
    font-family: 'Noto Serif JP', serif;
    font-size: 16px;
    letter-spacing: 0.12em;
    color: var(--slate);
  }
  .cv-banner-dark .cv-banner-text {
    color: var(--ivory);
  }

  @media (max-width: 768px) {
    .btn-primary-lg {
      padding: 20px 40px;
      min-width: 0;
      width: 85%;
      font-size: 18px;
    }
    .cv-banner { padding: 48px 6%; gap: 20px; }
    .cv-banner-text { font-size: 14px; }
  }

  /* VRバナー */
  .vr-banner {
    display: block;
    margin: 48px auto 56px;
    width: 90%;
    max-width: 860px;
    background: linear-gradient(135deg, #1a1209 0%, #2e1f06 50%, #1a1209 100%);
    border: 1px solid rgba(184,151,90,0.5);
    text-decoration: none;
    text-align: center;
    padding: 32px 40px;
    position: relative;
    overflow: hidden;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
  }
  .vr-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(184,151,90,0.08), transparent 60%);
    pointer-events: none;
  }
  .vr-banner:hover {
    border-color: var(--gold);
    box-shadow: 0 8px 40px rgba(184,151,90,0.2);
  }
  .vr-banner-inner {
    position: relative;
    z-index: 1;
  }
  .vr-banner-label {
    font-family: 'Montserrat', sans-serif;
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.45em;
    text-transform: uppercase;
    color: rgba(184,151,90,0.7);
    margin-bottom: 12px;
  }
  .vr-banner-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 28px;
    font-weight: 600;
    letter-spacing: 0.2em;
    color: var(--ivory);
    margin-bottom: 16px;
  }
  .vr-banner-sub {
    font-family: 'Noto Serif JP', serif;
    font-size: 17px;
    letter-spacing: 0.15em;
    color: rgba(184,151,90,0.85);
  }

  @media (max-width: 768px) {
    .vr-banner {
      width: 92%;
      padding: 24px 20px;
      margin: 28px auto 36px;
    }
    .vr-banner-title {
      font-size: 16px;
      letter-spacing: 0.12em;
      margin-bottom: 10px;
    }
    .vr-banner-label {
      font-size: 8px;
      margin-bottom: 8px;
    }
    .vr-banner-sub {
      font-size: 14px;
      letter-spacing: 0.08em;
      white-space: nowrap;
    }
  }

  span.btn-secondary {
    cursor: default;
  }
  .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 16px;
    padding: 18px 40px;
    border: 1px solid rgba(184,151,90,0.4);
    color: var(--gold-light);
    font-family: 'Montserrat', sans-serif;
    font-size: 11px;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    text-decoration: none;
    transition: all 0.3s ease;
  }
  .btn-secondary:hover {
    border-color: var(--gold);
    color: var(--gold);
    background: rgba(184,151,90,0.05);
  }
  .cta-image-wrap {
    position: relative;
  }
  .cta-image-wrap img {
    width: 100%;
    height: 560px;
    object-fit: cover;
    display: block;
  }
  .cta-badge {
    position: absolute;
    bottom: 40px;
    left: -30px;
    background: var(--dark);
    border: 1px solid rgba(184,151,90,0.3);
    padding: 24px 32px;
  }
  .cta-badge-line1 {
    font-family: 'Montserrat', sans-serif;
    font-size: 9px;
    letter-spacing: 0.3em;
    color: var(--gold);
    text-transform: uppercase;
    margin-bottom: 6px;
  }
  .cta-badge-line2 {
    font-family: 'Playfair Display', serif;
    font-size: 22px;
    font-weight: 300;
    color: var(--warm-white);
  }

  /* ── FOOTER ── */
  footer {
    background: #100F0D;
    padding: 60px 10%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid rgba(184,151,90,0.1);
  }
  .footer-logo {
    font-family: 'Playfair Display', serif;
    font-size: 20px;
    font-weight: 300;
    color: var(--gold-light);
    letter-spacing: 0.15em;
  }
  .footer-logo span {
    display: block;
    font-family: 'Montserrat', sans-serif;
    font-size: 9px;
    letter-spacing: 0.5em;
    color: rgba(247,244,239,0.3);
    text-transform: uppercase;
    margin-top: 4px;
  }
  .footer-copy {
    font-family: 'Montserrat', sans-serif;
    font-size: 10px;
    color: rgba(247,244,239,0.2);
    letter-spacing: 0.1em;
  }

  /* ── ANIMATIONS ── */
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to   { opacity: 1; transform: translateY(0); }
  }
  @keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
  }
  @keyframes scrollDown {
    0%   { transform: scaleY(0); transform-origin: top; }
    50%  { transform: scaleY(1); transform-origin: top; }
    50.01% { transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
  }

  /* scroll reveal */
  .reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.9s ease, transform 0.9s ease;
  }
  .reveal.visible {
    opacity: 1;
    transform: none;
  }
  .reveal-delay-1 { transition-delay: 0.15s; }
  .reveal-delay-2 { transition-delay: 0.3s; }
  .reveal-delay-3 { transition-delay: 0.45s; }

  /* ═══════════════════════════════════════
     MOBILE RESPONSIVE — Hero & Concept
  ═══════════════════════════════════════ */

  /* ── Tablet (max 1024px) ── */
  /* DESIGN FEATURESタイトル: PC=1行、モバイル=改行あり */
  .features-heading br { display: none; }
  @media (max-width: 768px) {
    .features-heading br { display: inline; }
  }

  @media (max-width: 1024px) {
    nav {
      padding: 20px 32px;
    }
    .nav-links {
      gap: 24px;
    }
    .hero-content {
      padding: 0 7% 8vh;
    }
    .concept {
      gap: 60px;
      padding: 100px 7%;
    }
  }

  /* ── Mobile (max 768px) ── */
  @media (max-width: 768px) {

    /* NAV */
    nav {
      padding: 18px 24px;
      background: rgba(26,24,20,0.95);
    }
    .nav-links {
      display: none;
    }
    .nav-hamburger {
      display: flex;
    }

    /* HERO */
    .hero {
      height: 100svh;
      min-height: 600px;
      align-items: flex-start;
    }
    .hero-bg {
      background-position: center 30% !important;
      background-size: cover !important;
    }
    .hero-content {
      padding: 90px 5% 0;
      max-width: 100%;
    }
    .hero-title-img {
      margin-bottom: 12px;
    }
    .hero-title-img img {
      max-width: 100%;
      width: 88% !important;
    }
    .hero-subtitle {
      font-size: 14px;
      letter-spacing: 0.14em;
      margin-bottom: 18px;
      padding-bottom: 14px;
    }
    .hero-desc {
      font-size: 12px;
      line-height: 1.9;
      padding: 14px 16px;
      max-width: 100%;
      background: linear-gradient(to right, rgba(26,24,20,0.65), rgba(26,24,20,0.15));
    }
    .hero-scroll {
      display: none;
    }

    /* CONCEPT */
    .concept {
      grid-template-columns: 1fr;
      gap: 48px;
      padding: 72px 6%;
    }
    .concept-heading {
      font-size: clamp(28px, 7vw, 40px);
      margin-bottom: 28px;
    }
    .concept-body {
      font-size: 14px;
      line-height: 2.2;
    }
    .concept-image::before {
      display: none;
    }
    .concept-image::after {
      display: none;
    }
    .concept {
      grid-template-columns: 1fr;
      gap: 40px;
    }
    .concept-image::before,
    .concept-image::after { display: none; }
    .exterior-switcher #ext-img {
      height: auto;
      width: 100%;
      object-fit: cover;
      object-position: center 30%;
      display: block;
    }
    .ext-tabs {
      position: static;
      background: rgba(26,24,20,0.85);
    }
    .ext-tab {
      padding: 14px 16px 12px;
    }
    .ext-tab-label {
      font-size: 8px;
      letter-spacing: 0.3em;
      margin-bottom: 4px;
    }
    .ext-tab-name {
      font-size: 12px;
    }
  }

  /* ── Small Mobile (max 480px) ── */
  @media (max-width: 480px) {
    .nav-logo {
      font-size: 10px;
      letter-spacing: 0.25em;
    }
    .hero-content {
      padding: 80px 5% 0;
    }
    .hero-eyebrow {
      font-size: 9px;
    }
    .hero-title-img img {
      width: 92% !important;
    }
    .hero-subtitle {
      font-size: 13px;
      letter-spacing: 0.1em;
      margin-bottom: 14px;
    }
    .hero-desc {
      font-size: 11px;
      line-height: 1.8;
      padding: 12px 14px;
    }
    .concept {
      padding: 60px 5%;
    }
    .exterior-switcher #ext-img {
      height: auto;
    }
    .ext-tabs {
      flex-direction: column;
      gap: 1px;
    }
  }

  /* ═══════════════════════════════════════════════════
     MOBILE RESPONSIVE — Design Features 〜 Footer
  ═══════════════════════════════════════════════════ */

  @media (max-width: 768px) {

    /* ── STATS BAR ── */
    .stats-bar {
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      padding: 48px 6%;
    }
    .stat-num { font-size: 36px; }
    .stat-label { font-size: 12px; }

    /* ── DESIGN FEATURES ── */
    .features { padding: 72px 5%; }
    .features-header { margin-bottom: 40px; }
    .features-sub { font-size: 13px; }
    .features-grid {
      grid-template-columns: 1fr;
      gap: 2px;
    }
    .feature-card-wide {
      grid-column: span 1;
      aspect-ratio: 16/9;
    }
    .feature-card-full {
      grid-column: span 1;
      aspect-ratio: 16/9;
    }
    .feature-card {
      aspect-ratio: 16/9;
    }
    .feature-card-content {
      padding: 16px 18px;
      background: linear-gradient(to top, rgba(26,24,20,0.85) 0%, rgba(26,24,20,0.4) 60%, transparent 100%);
    }
    .feature-num {
      font-size: 9px;
      margin-bottom: 4px;
    }
    .feature-name {
      font-size: 14px;
      letter-spacing: 0.08em;
      margin-bottom: 0;
    }
    .feature-desc {
      display: none;
    }

    /* ── PARAPET FEATURE ── */
    .parapet-feature {
      grid-template-columns: 1fr;
    }
    .parapet-image-col {
      height: 260px;
    }
    .parapet-image-col img {
      height: 260px;
    }
    .parapet-image-col::after { display: none; }
    .parapet-text-col {
      padding: 52px 6%;
    }
    .parapet-text-col::before { display: none; }
    .parapet-heading { font-size: clamp(24px, 6vw, 36px); }
    .parapet-body { font-size: 13px; line-height: 2.2; }
    .parapet-points strong { font-size: 13px; }
    .parapet-points p { font-size: 12px; }

    /* ── INTERIOR ── */
    .interior { padding: 72px 5%; }
    .interior-intro {
      grid-template-columns: 1fr;
      gap: 32px;
      margin-bottom: 40px;
    }
    .interior-heading {
      position: static;
      font-size: clamp(26px, 7vw, 40px);
    }
    .interior-text { font-size: 13px; line-height: 2.2; }
    .interior-text p + p { margin-top: 20px; }

    /* Interior videos */
    .interior-gallery-single { width: 100%; }
    .interior-video-wrap-full {
      height: 260px;
    }
    .interior-video-full {
      height: 260px;
      margin-top: 2px;
    }

    /* ── FLOOR PLAN ── */
    .floorplan { padding: 72px 5%; }
    .floorplan-heading {
      font-size: 20px;
      white-space: nowrap;
    }
    .plans-grid {
      grid-template-columns: 1fr;
      gap: 40px;
    }
    .plan-box { padding: 28px 20px; }
    .plan-room { font-size: 11px; padding: 3px 10px; }

    /* ── EXCLUSIVE MODELHOUSE ── */
    .exclusive { padding: 72px 5%; }
    .exclusive-heading { font-size: clamp(26px, 7vw, 48px); }
    .exclusive-text { font-size: 13px; }
    .store-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2px;
      width: 100%;
      margin: 0 0 40px;
    }
    .store-item { padding: 20px 16px; }
    .store-name { font-size: 13px; }
    .store-brand { font-size: 11px; }
    .store-city { font-size: 11px; }

    /* ── LIFESTYLE QUOTE ── */
    .lifestyle { height: auto; min-height: 380px; padding: 60px 0; }
    .lifestyle-quote {
      font-size: clamp(18px, 5vw, 28px);
      line-height: 1.9;
      padding: 0 6%;
    }
    .lifestyle-sub { font-size: 10px; }

    /* ── CTA ── */
    .cta-section {
      grid-template-columns: 1fr;
      gap: 48px;
      padding: 72px 6%;
    }
    .cta-heading { font-size: clamp(26px, 7vw, 40px); }
    .cta-text { font-size: 13px; line-height: 2.2; }
    .cta-image-wrap img {
      height: 280px;
    }
    .cta-badge {
      left: 0;
      bottom: 20px;
      padding: 16px 20px;
    }
    .cta-badge-line2 { font-size: 16px; }
    .cta-buttons { gap: 12px; }
    .btn-primary, .btn-secondary {
      padding: 14px 24px;
      font-size: 10px;
      letter-spacing: 0.2em;
    }

    /* ── FOOTER ── */
    footer {
      flex-direction: column;
      align-items: flex-start;
      gap: 16px;
      padding: 40px 6%;
    }
    .footer-logo { font-size: 16px; }
    .footer-copy { font-size: 9px; }

    /* ── SECTION LABELS ── */
    .section-label { font-size: 9px; }
    .gold-rule { margin: 24px auto; }
  }

  /* ── Small Mobile (max 480px) ── */
  @media (max-width: 480px) {
    .stats-bar { grid-template-columns: 1fr 1fr; gap: 16px; padding: 40px 5%; }
    .stat-num { font-size: 30px; }
    .features { padding: 60px 4%; }
    .store-list { grid-template-columns: 1fr; }
    .store-item { padding: 18px 14px; }
    .parapet-image-col { height: 220px; }
    .parapet-image-col img { height: 220px; }
    .interior-video-wrap-full { height: 210px; }
    .interior-video-full { height: 210px; }
    .cta-image-wrap img { height: 220px; }
    .lifestyle { min-height: 320px; }
    .lifestyle-quote { font-size: clamp(16px, 4.5vw, 22px); }
    .exclusive-heading { font-size: clamp(22px, 6vw, 36px); }
  }


  /* ── HAMBURGER & MOBILE MENU ── */
  .nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
  }
  .nav-hamburger span {
    display: block;
    width: 24px;
    height: 1px;
    background: var(--gold-light);
    transition: all 0.3s;
  }
  .nav-mobile-menu {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(26,24,20,0.97);
    z-index: 200;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 40px;
  }
  .nav-mobile-menu.open {
    display: flex;
  }
  .nav-mobile-menu a {
    font-family: 'Playfair Display', serif;
    font-size: 28px;
    font-weight: 300;
    color: var(--ivory);
    text-decoration: none;
    letter-spacing: 0.15em;
    transition: color 0.3s;
  }
  .nav-mobile-menu a:hover { color: var(--gold); }

  /* ── FLOOR PLAN MODAL ── */
  .plan-modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(10,9,8,0.92);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    align-items: center;
    justify-content: center;
    padding: 20px;
  }
  .plan-modal.open {
    display: flex;
  }
  .plan-modal-inner {
    position: relative;
    max-width: min(90vw, 1200px);
    max-height: 90vh;
    background: var(--charcoal);
    border: 1px solid rgba(184,151,90,0.3);
    box-shadow: 0 32px 80px rgba(0,0,0,0.7);
    overflow: auto;
    animation: modalIn 0.3s ease;
  }
  @keyframes modalIn {
    from { opacity: 0; transform: scale(0.94); }
    to   { opacity: 1; transform: scale(1); }
  }
  .plan-modal-inner img {
    display: block;
    width: 100%;
    height: auto;
  }
  .plan-modal-close {
    position: absolute;
    top: 12px; right: 14px;
    background: rgba(26,24,20,0.85);
    border: 1px solid rgba(184,151,90,0.4);
    color: var(--gold-light);
    font-size: 18px;
    width: 40px; height: 40px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    line-height: 1;
  }
  .plan-modal-close:hover {
    background: var(--gold);
    color: var(--dark);
  }
  .plan-img-wrap {
    transition: opacity 0.2s;
  }
  .plan-img-wrap:hover {
    opacity: 0.85;
  }
  .plan-img-wrap::after {
    content: '\1F50D  拡大';
    position: absolute;
    bottom: 10px; right: 12px;
    font-family: 'Montserrat', sans-serif;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--gold);
    background: rgba(26,24,20,0.75);
    padding: 5px 10px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.25s;
  }
  .plan-img-wrap {
    position: relative;
  }
  .plan-img-wrap:hover::after {
    opacity: 1;
  }