:root {
    --color-bg: #faf7f2;
    --color-bg-cool: #f4ede0;
    --color-ink: #2c2622;
    --color-ink-soft: #6b6158;
    --color-tan: #a98f6b;
    --color-tan-soft: #d9cbb4;
    --color-brick: #634A38;
    --color-brick-soft: #e7d3cd;
    --color-line: #ded3c3;
    --color-white: #ffffff;
    --font-display: 'Cormorant Garamond', serif;
    --font-body: 'Noto Sans JP', sans-serif;
    --font-num: 'Lato', sans-serif;
  }

  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  body {
    font-family: var(--font-body);
    color: var(--color-ink);
    background: var(--color-bg);
    line-height: 1.85;
    font-weight: 300;
    -webkit-font-smoothing: antialiased;
  }

  img {
    max-width: 100%;
    display: block;
  }

  .wrap {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 28px;
  }

  .eyebrow {
    font-family: var(--font-num);
    font-weight: 300;
    letter-spacing: 0.28em;
    font-size: 12px;
    color: var(--color-tan);
    text-transform: uppercase;
  }

  .section-title {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 34px;
    letter-spacing: 0.03em;
    line-height: 1.5;
    margin: 10px 0 20px;
  }

  .section-lead {
    font-size: 14px;
    color: var(--color-ink-soft);
    line-height: 2;
  }

  .fade-up {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.9s ease, transform 0.9s ease;
  }

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

  /* ===== FV ===== */
  .fv {
    position: relative;
    height: 92vh;
    min-height: 560px;
    display: flex;
    align-items: flex-end;
    overflow: hidden;
    background: linear-gradient(160deg, #cbb79a 0%, #634A38 55%, #6b4a3a 100%);
  }

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

  .fv-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-color: #634A38;
    opacity: 0;
    transition: opacity 1.4s ease;
  }

  .fv-slide.is-active {
    opacity: 1;
  }

  .fv::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(0deg, rgba(30,22,16,0.55) 0%, rgba(30,22,16,0.05) 55%);
    z-index: 1;
  }

  .fv-inner {
    position: relative;
    z-index: 2;
    width: 100%;
    padding: 0 24px 56px;
    color: var(--color-white);
    text-align: center;
  }

  .fv-badge-row {
    display: flex;
    gap: 10px;
    margin-bottom: 18px;
    justify-content: center;
    flex-wrap: wrap;
  }

  .fv-badge {
    font-family: var(--font-num);
    font-size: 12px;
    letter-spacing: 0.12em;
    border: 1px solid rgba(255,255,255,0.6);
    padding: 5px 12px;
    border-radius: 999px;
  }

  .fv-series {
    font-family: var(--font-display);
    font-size: 5vw;
    line-height: 1.1;
    letter-spacing: 0.01em;
    font-weight: 500;
  }

  .fv-series small {
    display: block;
    font-family: var(--font-body);
    font-weight: 300;
    font-size: 15px;
    letter-spacing: 0.22em;
    margin-top: 14px;
  }

  .fv-catch {
    margin-top: 22px;
    font-size: 14px;
    letter-spacing: 0.04em;
    line-height: 1.9;
  }

  /* ===== CONCEPT ===== */
  .concept {
    padding-top: 96px;
    padding-bottom: 88px;
    text-align: center;
  }

  .concept .section-title {
    max-width: 620px;
    margin-left: auto;
    margin-right: auto;
  }

  .concept-body {
    max-width: 560px;
    margin: 0 auto;
    font-size: 14px;
    color: var(--color-ink-soft);
    white-space: pre-line;
  }

  .concept-divider {
    max-width: 560px;
    margin: 44px auto 0;
    border-top: 1px solid var(--color-line);
  }

  .concept-images {
    max-width: 560px;
    margin: 32px auto 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }

  .concept-images figure {
    aspect-ratio: 3 / 4;
    border-radius: 4px;
    overflow: hidden;
    background: linear-gradient(160deg, #e6ddca 0%, #c9a98a 55%, #8a5a45 100%);
  }

  .concept-images img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .concept-story {
    margin-top: 32px;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
    font-size: 13px;
    color: var(--color-ink-soft);
    white-space: pre-line;
    text-align: left;
  }

  /* ===== FUNCTION ===== */
  .function {
    background: var(--color-bg-cool);
    padding: 88px 0;
  }

  .function-head {
    text-align: center;
    margin-bottom: 48px;
  }

  .function-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    max-width: 560px;
    margin: 0 auto 48px;
  }

  .function-card {
    background: var(--color-white);
    border-radius: 6px;
    padding: 36px 24px;
    text-align: center;
    border: 1px solid var(--color-line);
  }

  .function-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 18px;
  }

  .function-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
  }

  .function-icon svg {
    width: 100%;
    height: 100%;
    stroke: var(--color-tan);
    fill: none;
  }

  .function-card h3 {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 22px;
    letter-spacing: 0.04em;
    margin-bottom: 10px;
  }

  .function-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 14px;
    background: linear-gradient(160deg, #e6ddca 0%, #c9a98a 55%, #8a5a45 100%);
  }

  .function-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .function-card p {
    font-size: 13px;
    color: var(--color-ink-soft);
  }

  /* 検査結果スライダー */
  .lab-slider {
    max-width: 560px;
    margin: 0 auto;
    position: relative;
  }

  .lab-track {
    overflow: hidden;
    border-radius: 6px;
    border: 1px solid var(--color-line);
    background: var(--color-white);
  }

  .lab-cards {
    display: flex;
    transition: transform 0.5s ease;
  }

  .lab-card {
    min-width: 100%;
    padding: 32px 28px;
  }

  .lab-card h4,
  .lab-card p,
  .lab-card .lab-figure {
    max-width: 640px;
  }

  .lab-card .eyebrow {
    display: block;
    margin-bottom: 8px;
  }

  .lab-card h4 {
    font-family: var(--font-display);
    font-size: 20px;
    margin-bottom: 14px;
  }

  .lab-figure {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 14px;
  }

  .lab-figure .num {
    font-family: var(--font-num);
    font-size: 40px;
    color: var(--color-brick);
    font-weight: 400;
  }

  .lab-figure .unit {
    font-size: 13px;
    color: var(--color-ink-soft);
  }

  .lab-card p {
    font-size: 12.5px;
    color: var(--color-ink-soft);
  }

  .lab-note {
    margin-top: 12px;
    font-size: 12px;
    color: var(--color-ink-soft);
    border-top: 1px dotted var(--color-line);
    padding-top: 10px;
  }

  .lab-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--color-white);
    border: 1px solid var(--color-line);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-family: var(--font-num);
    color: var(--color-ink);
    font-size: 16px;
  }

  .lab-arrow.prev { left: -14px; }
  .lab-arrow.next { right: -14px; }

  .lab-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
  }

  .lab-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-tan-soft);
    cursor: pointer;
  }

  .lab-dot.is-active {
    background: var(--color-tan);
  }

  /* ===== BENEFIT ===== */
  .benefit {
    padding-top: 88px;
    padding-bottom: 88px;
  }

  .benefit-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
  }

  .benefit-row.reverse .benefit-visual { order: 2; }
  .benefit-row.reverse .benefit-text { order: 1; }

  .benefit-visual {
    aspect-ratio: 4 / 5;
    border-radius: 6px;
    background: linear-gradient(135deg, #e6ddca 0%, #c9a98a 55%, #8a5a45 100%);
    overflow: hidden;
    position: relative;
  }

  .benefit-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  #benefitScene img {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 1s ease;
  }

  #benefitScene img.is-active {
    opacity: 1;
  }

  .benefit-tags span {
    transition: background 0.4s ease, color 0.4s ease, border-color 0.4s ease;
  }

  .benefit-tags span.is-active {
    background: var(--color-brick);
    border-color: var(--color-brick);
    color: var(--color-white);
  }

  .benefit-text .num {
    font-family: var(--font-num);
    font-size: 13px;
    color: var(--color-tan);
    letter-spacing: 0.18em;
  }

  .benefit-text h3 {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 500;
    margin: 10px 0 16px;
    line-height: 1.5;
  }

  .benefit-text p {
    font-size: 13.5px;
    color: var(--color-ink-soft);
  }

  .benefit-tags {
    display: flex;
    gap: 8px;
    margin-top: 18px;
    flex-wrap: wrap;
  }

  .benefit-tags span {
    font-size: 12px;
    border: 1px solid var(--color-line);
    padding: 5px 12px;
    border-radius: 999px;
    color: var(--color-ink-soft);
  }

  .coord-strip {
    margin-top: 28px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
  }

  .coord-strip figure {
    aspect-ratio: 3 / 4;
    border-radius: 4px;
    overflow: hidden;
    background: linear-gradient(160deg, #ded0b8, #a98f6b);
  }

  .coord-strip img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  /* ===== COUPON ===== */
  .coupon {
    padding-top: 64px;
    padding-bottom: 64px;
  }

  .coupon-card {
    max-width: 560px;
    margin: 0 auto;
    text-align: center;
    border: 1px dashed var(--color-tan);
    border-radius: 10px;
    padding: 40px 28px;
    background: var(--color-white);
  }

  .coupon-eyebrow {
    font-family: var(--font-num);
    font-size: 12px;
    letter-spacing: 0.16em;
    color: var(--color-tan);
    text-transform: uppercase;
  }

  .coupon-rate {
    font-family: var(--font-display);
    font-size: 26px;
    font-weight: 500;
    color: var(--color-brick);
    margin: 14px 0 10px;
  }

  .coupon-rate .num {
    font-family: var(--font-num);
    font-size: 56px;
  }

  .coupon-period {
    font-size: 12.5px;
    color: var(--color-ink-soft);
    margin-bottom: 24px;
  }

  .coupon-button {
    display: inline-block;
    font-family: var(--font-num);
    font-size: 13px;
    letter-spacing: 0.12em;
    color: var(--color-white);
    background: var(--color-brick);
    padding: 14px 48px;
    border-radius: 999px;
    text-decoration: none;
    transition: opacity 0.3s ease;
  }

  .coupon-button:hover {
    opacity: 0.85;
  }

  /* ===== PRODUCT ===== */
  .product {
    padding-top: 96px;
    padding-bottom: 96px;
    border-top: 1px solid var(--color-line);
  }

  .product-head {
    text-align: center;
    margin-bottom: 40px;
  }

  .product-release {
    display: inline-block;
    margin-top: 10px;
    font-family: var(--font-num);
    font-size: 12px;
    letter-spacing: 0.1em;
    color: var(--color-white);
    background: var(--color-brick);
    padding: 5px 16px;
    border-radius: 999px;
  }

  .product-body {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 44px;
  }

  .p-slider {
    position: relative;
  }

  .p-slider-track {
    overflow: hidden;
    border-radius: 6px;
  }

  .p-slider-cards {
    display: flex;
    transition: transform 0.5s ease;
  }

  .p-slider-cards figure {
    min-width: 100%;
    aspect-ratio: 4 / 5;
    background: linear-gradient(150deg, #efe7d8, #c9b291);
  }

  .p-slider-cards img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .p-slider .lab-arrow.prev { left: 12px; }
  .p-slider .lab-arrow.next { right: 12px; }

  .p-slider-caption {
    position: absolute;
    bottom: 14px;
    left: 14px;
    font-family: var(--font-num);
    font-size: 12px;
    color: var(--color-white);
    background: rgba(44,38,34,0.55);
    padding: 4px 10px;
    border-radius: 999px;
  }

  .p-info-no {
    font-family: var(--font-num);
    font-size: 12px;
    color: var(--color-tan);
    letter-spacing: 0.1em;
  }

  .product-title {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 500;
    letter-spacing: 0.02em;
    line-height: 1.6;
    margin: 10px 0 0;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
  }

  .product-title .ptitle-num {
    font-family: var(--font-display);
    font-size: 1.1em;
    letter-spacing: 0.01em;
  }

  .p-info h3 {
    font-family: var(--font-body);
    font-size: 22px;
    font-weight: 500;
    margin: 8px 0 14px;
    line-height: 1.6;
  }

  .p-price {
    font-family: var(--font-num);
    font-size: 22px;
    margin-bottom: 20px;
  }

  .p-price::after {
    content: "（税込）";
    font-family: var(--font-body);
    font-size: 12px;
    color: var(--color-ink-soft);
    margin-left: 6px;
  }

  .p-desc {
    font-size: 13px;
    color: var(--color-ink-soft);
    margin-bottom: 22px;
  }

  .p-meta {
    display: grid;
    grid-template-columns: 72px 1fr;
    row-gap: 10px;
    font-size: 12.5px;
    border-top: 1px solid var(--color-line);
    padding-top: 18px;
  }

  .p-meta dt {
    color: var(--color-ink-soft);
  }

  .color-swatches {
    display: flex;
    gap: 8px;
    align-items: center;
  }

  .swatch {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 1px solid var(--color-line);
    display: inline-block;
  }

  .swatch.black { background: #2c2622; }
  .swatch.ivory { background: #efe6d6; }

  .p-buy-button {
    display: inline-block;
    margin-top: 22px;
    width: 100%;
    text-align: center;
    font-family: var(--font-num);
    font-size: 13px;
    letter-spacing: 0.1em;
    color: var(--color-white);
    background: var(--color-brick);
    padding: 14px 0;
    border-radius: 999px;
    text-decoration: none;
    transition: opacity 0.3s ease;
  }

  .p-buy-button:hover {
    opacity: 0.85;
  }

  /* ===== EXISTING ITEMS ===== */
  .existing {
    background: var(--color-bg-cool);
    padding: 80px 0;
  }

  .existing-head {
    text-align: center;
    margin-bottom: 36px;
  }

  .existing-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
  }

  .existing-card {
    display: block;
    text-decoration: none;
    color: inherit;
    transition: opacity 0.3s ease;
  }

  .existing-card:hover {
    opacity: 0.75;
  }

  .existing-card figure {
    aspect-ratio: 3 / 4;
    border-radius: 4px;
    background: linear-gradient(160deg, #e2d7c4, #b39c7c);
    margin-bottom: 10px;
  }

  .existing-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .existing-card .no {
    font-family: var(--font-num);
    font-size: 12px;
    color: var(--color-tan);
  }

  .existing-card .name {
    font-size: 12px;
    line-height: 1.6;
    margin: 3px 0 6px;
  }

  .existing-card .price {
    font-family: var(--font-num);
    font-size: 14px;
  }

  /* ===== CTA / FOOTER ===== */
  .cta {
    padding-top: 90px;
    padding-bottom: 90px;
    text-align: center;
  }

  .cta .section-title {
    max-width: 520px;
    margin: 0 auto 28px;
  }

  .cta-button {
    display: inline-block;
    font-family: var(--font-num);
    font-size: 13px;
    letter-spacing: 0.14em;
    color: var(--color-white);
    background: var(--color-brick);
    padding: 16px 48px;
    border-radius: 999px;
    text-decoration: none;
  }

  /* ===== RELATED SERIES ===== */
  .related {
    padding-top: 80px;
    padding-bottom: 64px;
    background: var(--color-bg-cool);
  }

  .related .section-title {
    max-width: 100%;
  }

  .related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px 16px;
    margin: 40px 0 44px;
  }

  .related-item {
    display: block;
    text-decoration: none;
    color: inherit;
    transition: opacity 0.3s ease;
  }

  .related-item:hover {
    opacity: 0.75;
  }

  .related-image {
    aspect-ratio: 550 / 320;
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 10px;
  }

  .related-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .related-name {
    font-family: var(--font-display);
    font-size: 15px;
    font-weight: 500;
    margin-bottom: 6px;
  }

  .related-desc {
    font-size: 11px;
    line-height: 1.8;
    color: var(--color-ink-soft);
  }

  .related-wellness-btn {
    position: relative;
    display: block;
    max-width: 550px;
    aspect-ratio: 550 / 320;
    margin: 0 auto;
    border-radius: 8px;
    overflow: hidden;
    text-decoration: none;
  }

  .related-wellness-btn img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
  }

  .related-wellness-btn span {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-num);
    font-size: 13px;
    letter-spacing: 0.14em;
    color: var(--color-white);
    background: rgba(20, 16, 14, 0.28);
  }

  footer {
    padding: 34px 0 48px;
    text-align: center;
    border-top: 1px solid var(--color-line);
  }

  footer .fname {
    font-family: var(--font-display);
    font-size: 15px;
    letter-spacing: 0.1em;
  }

  footer .copy {
    font-family: var(--font-num);
    font-size: 12px;
    color: var(--color-ink-soft);
    margin-top: 6px;
  }

  /* ===== RESPONSIVE ===== */
  @media (max-width: 768px) {
    .fv { height: 46vh; min-height: 340px; }
    .fv-inner { padding: 0 28px 32px; }
    .fv-series { font-size: 9vw; }
    .fv-badge-row { margin-bottom: 12px; }
    .fv-catch { margin-top: 14px; }
    .function-grid { grid-template-columns: 1fr; }
    .benefit-row,
    .benefit-row.reverse { grid-template-columns: 1fr; }
    .benefit-row.reverse .benefit-visual,
    .benefit-row.reverse .benefit-text { order: initial; }
    .coord-strip { grid-template-columns: repeat(2, 1fr); }
    .product-body { grid-template-columns: 1fr; }
    .existing-grid { grid-template-columns: repeat(2, 1fr); }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
  }