/* ========================================
   Product Page Styles
   ======================================== */

/* Product Hero */
.unified-background .product-hero {
  position: relative;
  background: url('../images/products/pro_back.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: var(--color-white);
  padding: var(--spacing-4xl) 0;
  text-align: center;
  overflow: hidden;
  min-height: 200px;
}

.product-hero-title {
  font-size: var(--font-size-5xl);
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

.product-hero-subtitle {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.9);
  font-weight: var(--font-weight-normal);
  margin-bottom: 0;
}

/* Product Hero with Background Band */
.product-hero-with-bg {
  position: relative;
  width: 100%;
  padding: 0;
  margin-top: 0;
  overflow: hidden;
}

.product-hero-content {
  position: relative;
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  min-height: 500px;
}

.product-hero-content::before {
  content: '';
  position: absolute;
  top: calc(30% - 60px);
  left: 50%;
  width: 100vw;
  margin-left: calc(-50vw);
  height: calc(70% + 70px);
  background-color: #7CB342;
  background-image: url('../images/products/pro_back.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: 0;
}

/* Blue Background Variant - 同じ背景画像を使用 */
.product-hero-with-bg.product-hero-blue .product-hero-content::before {
  /* 背景画像は共通で使用 */
}

.product-hero-with-bg.product-hero-toprunner .product-hero-content::before {
  top: 0;
  left: 50%;
  margin-left: calc(-50vw);
  height: 100%;
  background: linear-gradient(135deg, var(--color-gray-300) 0%, var(--color-gray-300) 50%, #ed5c21 50%, #ed5c21 80%, transparent 80%);
}

.product-hero-with-bg.product-hero-toprunner .product-hero-content::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 48%;
  height: 100%;
  background: linear-gradient(180deg, #f8f8f8 0%, #d9d9d9 100%);
  z-index: 0;
}

.product-hero-image {
  position: relative;
  z-index: 1;
  text-align: center;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.product-3d-image {
  max-width: 290px;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.2));
}

.product-hero-title-area {
  position: relative;
  z-index: 1;
  text-align: left;
  padding-left: 0;
  margin-left: calc(var(--spacing-3xl) * -1);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-self: flex-end;
  padding-bottom: var(--spacing-4xl);
}

.product-hero-with-bg.product-hero-toprunner .product-hero-content {
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  min-height: 520px;
}

.product-hero-with-bg.product-hero-toprunner .product-hero-image {
  justify-content: flex-end;
}

.product-hero-with-bg.product-hero-toprunner .product-hero-title-area {
  margin-left: 0;
  padding-bottom: var(--spacing-3xl);
}

.product-hero-with-bg.product-hero-toprunner .product-3d-image {
  max-width: 420px;
  width: 100%;
}

.product-hero-badge-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.product-hero-badge {
  height: 56px;
  width: auto;
}

.product-hero-badge--large {
  height: 92px;
}

.product-hero-main-title {
  font-size: var(--font-size-5xl);
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
  font-weight: var(--font-weight-bold);
  max-width: 100%;
  overflow-wrap: break-word;
  word-break: normal;
  line-height: var(--line-height-tight);
}

.product-hero-main-subtitle {
  font-size: var(--font-size-2xl);
  color: var(--color-white);
  margin-bottom: 0;
  font-weight: var(--font-weight-normal);
}

.product-hero-release {
  font-size: var(--font-size-base);
  color: rgba(255, 255, 255, 0.85);
  margin-top: var(--spacing-sm);
}

/* Product BS Page - Vertical Layout */
.product-bs-page .product-hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: var(--spacing-xl);
  padding: var(--spacing-4xl) var(--container-padding);
}

.product-bs-page .product-hero-image {
  order: 1;
  align-items: center;
  justify-content: center;
}

.product-bs-page .product-3d-image {
  max-width: 500px;
  width: 100%;
}

.product-bs-page .product-hero-title-area {
  order: 2;
  text-align: center;
  margin-left: 0;
  padding-left: 0;
  padding-bottom: 0;
  align-self: center;
}

/* Product Content */
.product-main {
  background-color: var(--color-white);
  border-radius: var(--radius-none);
  padding: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
  color: #2d3748;
}

/* 白背景時の文字色調整 */
.unified-background .product-main h1,
.unified-background .product-main h2,
.unified-background .product-main h3,
.unified-background .product-main h4,
.unified-background .product-main h5,
.unified-background .product-main h6 {
  color: #1a202c;
}

.unified-background .product-main p,
.unified-background .product-main ul,
.unified-background .product-main ol,
.unified-background .product-main li {
  color: #2d3748;
}

.product-image-wrapper {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.product-main-image {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-none);
}

.product-description {
  font-size: var(--font-size-lg);
  color: var(--color-gray-700);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-2xl);
}

/* Product Specs */
.product-specs {
  padding: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
  border-bottom: 1px solid var(--color-gray-200);
}

.product-specs:last-child {
  border-bottom: none;
}

.toprunner-recognition-list {
  list-style: none;
  margin: 0 0 var(--spacing-xl);
  padding: 0;
  display: grid;
  gap: var(--spacing-sm);
}

.toprunner-recognition-list li {
  position: relative;
  padding-left: var(--spacing-xl);
  color: var(--color-gray-700);
}

.toprunner-recognition-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-black);
  font-weight: var(--font-weight-bold);
}

.toprunner-cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.toprunner-cert-item {
  text-align: center;
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  padding: var(--spacing-md);
  border-radius: var(--radius-none);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
}

.toprunner-cert-item img {
  width: 100%;
  height: auto;
  object-fit: contain;
  margin-bottom: var(--spacing-sm);
}

.toprunner-cert-item figcaption {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
}

/* Storage Stand Page Customizations */
.storage-stand-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.storage-stand-gallery-title {
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

.storage-stand-gallery-image {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.hero-product-image {
  max-width: 380px;
  width: 100%;
}

.storage-stand-download {
  text-align: center;
  margin-top: var(--spacing-2xl);
}

.tx5000-section {
  padding-top: var(--spacing-4xl);
  padding-bottom: var(--spacing-4xl);
}

.tx5000-card {
  background: var(--color-bg-surface-alt);
  box-shadow: var(--shadow-sm);
  border-radius: var(--radius-none);
  padding: var(--spacing-3xl);
  display: grid;
  gap: var(--spacing-3xl);
}

.tx5000-block {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.tx5000-heading {
  font-size: var(--font-size-2xl);
  color: var(--color-gray-900);
  margin-bottom: 0;
  text-align: left;
}

.tx5000-text {
  max-width: 640px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.tx5000-description {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-gray-700);
  margin: 0;
  text-align: left !important;
}

.tx5000-features .features-list {
  margin: 0;
}

.tx5000-features .features-list li {
  color: #000000;
}

.tx5000-gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-xl);
}

.tx5000-gallery-item {
  text-align: center;
}

.tx5000-image {
  width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-none);
  box-shadow: var(--shadow-sm);
}

.tx5000-caption {
  margin-top: var(--spacing-md);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-tight);
  color: var(--color-gray-700);
}

.tx5000-cta {
  text-align: center;
  margin-top: var(--spacing-2xl);
}

@media (max-width: 1024px) {
  .tx5000-card {
    padding: var(--spacing-2xl);
    gap: var(--spacing-2xl);
  }
}

@media (max-width: 768px) {
  .tx5000-section {
    padding-top: var(--spacing-3xl);
    padding-bottom: var(--spacing-3xl);
  }

  .tx5000-card {
    padding: var(--spacing-xl) var(--spacing-lg);
    gap: var(--spacing-2xl);
  }

  .tx5000-heading {
    text-align: center;
  }

  .tx5000-text {
    max-width: 320px;
    margin: 0 auto;
    text-align: center;
  }

  .tx5000-description {
    font-size: var(--font-size-base);
  }

  .tx5000-gallery-grid {
    grid-template-columns: 1fr;
  }

  .tx5000-gallery-item {
    max-width: 320px;
    margin: 0 auto;
  }

  /* TX製品共通：関連実績ギャラリー（tx-product-gallery-grid）のスマホ対応 */
  .tx-product-gallery-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  .tx-product-gallery-item {
    max-width: 320px;
    margin-left: auto;
    margin-right: auto;
  }

  .tx5000-features .features-list {
    text-align: left;
  }

  .storage-stand-page .product-hero-content {
    grid-template-columns: 1fr;
    justify-items: center;
    align-items: center;
  }

  .storage-stand-page .product-hero-content::before {
    top: calc(20% - 120px);
    height: calc(90% + 160px);
  }

  .storage-stand-page .product-hero-image {
    transform: translateY(10px);
  }

  .storage-stand-page .product-hero-title-area {
    margin-left: 0;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 320px;
    background: rgba(0, 0, 0, 0.05);
    border-radius: var(--radius-md);
  }

  .hero-product-image {
    max-width: 360px;
  }
}

.storage-stand-page .product-main {
  padding-top: var(--spacing-2xl);
  padding-bottom: var(--spacing-2xl);
}

.storage-stand-main {
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  border-radius: var(--radius-none);
  padding: var(--spacing-2xl);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2xl);
}

.storage-stand-title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-sm);
}

.storage-stand-description {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

.storage-stand-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-2xl);
}

.storage-stand-download {
  text-align: center;
  margin-top: var(--spacing-md);
}

@media (min-width: 769px) {
  .storage-stand-page .section {
    padding-top: var(--spacing-md);
    padding-bottom: var(--spacing-lg);
  }

  .storage-stand-page .product-hero-content {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: center;
  }

  .storage-stand-page .product-hero-content::before {
    top: calc(30% - 80px);
    height: calc(70% + 20px);
  }

  .storage-stand-page .product-hero-image {
    min-width: 0;
    align-items: flex-end;
    justify-content: center;
    transform: translate(30px, 20px);
  }

  .hero-product-image {
    max-width: 380px;
    width: 100%;
  }

  .storage-stand-page .product-hero-title-area {
    margin-left: 0;
    padding: var(--spacing-lg) var(--spacing-2xl) var(--spacing-3xl);
    align-items: flex-start;
    justify-content: center;
    text-align: left;
    justify-self: flex-start;
    width: 100%;
    min-width: 0;
    max-width: 100%;
    box-sizing: border-box;
  }

  .storage-stand-page .product-hero-main-title {
    white-space: normal;
    overflow-wrap: break-word;
    word-break: normal;
    max-width: 100%;
    line-height: var(--line-height-tight);
  }
}

@media (max-width: 768px) {
  .storage-stand-main {
    padding: var(--spacing-xl);
  }

  .storage-stand-description {
    font-size: var(--font-size-base);
  }

  .storage-stand-gallery {
    grid-template-columns: 1fr;
  }
}

.tx-product-page .product-hero-content {
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: center;
  min-height: 440px;
}

.tx-product-page .product-hero-image {
  align-items: flex-end;
  justify-content: center;
  transform: translateY(10px);
}

.tx-product-page .product-hero-title-area {
  margin-left: calc(var(--spacing-3xl) * -1);
  padding: 0 var(--spacing-2xl) var(--spacing-sm) 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: left;
  align-self: center;
}

.tx-product-page .product-hero-content::before {
  top: calc(30% - 90px);
}

.storage-stand-page .product-hero-content {
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: center;
}

.storage-stand-page .product-hero-content::before {
  top: calc(30% - 80px);
  height: calc(70% + 20px);
}

.storage-stand-page .product-hero-image {
  min-width: 0;
  align-items: flex-end;
  justify-content: center;
  transform: translate(30px, 20px);
}

.storage-stand-page .product-hero-title-area {
  margin-left: 0;
  padding: var(--spacing-lg) var(--spacing-2xl) var(--spacing-3xl);
  text-align: left;
  justify-self: center;
  align-self: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
}

.tx-section-title {
  font-size: var(--font-size-2xl);
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-xl);
  text-align: left;
}

.tx-product-gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-xl);
}

.tx-product-gallery-item {
  text-align: center;
}

.tx-product-image {
  width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-none);
  box-shadow: var(--shadow-sm);
}

.tx-product-caption {
  margin-top: var(--spacing-md);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-tight);
  color: var(--color-gray-700);
}

.tx-product-cta-wrapper {
  text-align: center;
  margin-top: var(--spacing-2xl);
}

.tx-product-cta {
  padding-left: var(--spacing-2xl);
  padding-right: var(--spacing-2xl);
}

@media (max-width: 768px) {
  .storage-stand-page .product-hero-content {
    grid-template-columns: 1fr;
    justify-items: center;
    align-items: center;
  }

  .storage-stand-page .product-hero-content::before {
    top: calc(20% - 120px);
    height: calc(90% + 160px);
  }

  .storage-stand-page .product-hero-image {
    transform: translateY(10px);
  }

  .storage-stand-page .product-hero-title-area {
    margin-left: 0;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 320px;
    background: rgba(0, 0, 0, 0.05);
    border-radius: var(--radius-md);
  }
}

.specs-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
}

.specs-header .specs-title {
  margin-bottom: 0;
}

.specs-header .btn {
  flex-shrink: 0;
}

.specs-title {
  font-size: var(--font-size-2xl);
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-xl);
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid #d1d5db;
}

.specs-table tr {
  border-bottom: 1px solid #d1d5db;
}

.specs-table tr:last-child {
  border-bottom: none;
}

.specs-table th {
  width: 200px;
  padding: var(--spacing-md);
  text-align: left;
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
  background-color: var(--color-gray-100);
  vertical-align: top;
  border-right: 1px solid #d1d5db;
}

.specs-table td {
  padding: var(--spacing-md);
  color: #000000;
  line-height: var(--line-height-relaxed);
}

/* Product Features */
.product-features {
  margin-bottom: var(--spacing-2xl);
}

.features-title {
  font-size: var(--font-size-2xl);
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-xl);
}

.features-list {
  list-style: none;
  padding: 0;
  margin: var(--spacing-lg) 0;
}

.features-list li {
  position: relative;
  padding-left: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-gray-700);
  line-height: var(--line-height-relaxed);
}

.features-list li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-black);
  font-weight: var(--font-weight-bold);
}

.toprunner-feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-2xl);
  align-items: center;
  margin: var(--spacing-2xl) 0;
}

.feature-visual {
  text-align: center;
}

.feature-image {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-none);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
}

.feature-item {
  display: flex;
  gap: var(--spacing-md);
}

.feature-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  color: var(--color-black);
}

.feature-text {
  flex: 1;
  color: var(--color-gray-700);
  line-height: var(--line-height-relaxed);
}

/* Achievement Box */
.achievement-box {
  background-color: var(--color-white);
  border-left: 4px solid var(--color-black);
  padding: var(--spacing-xl);
  margin: var(--spacing-lg) 0;
}

/* Achievements Two Column Layout */
.achievements-two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  margin: var(--spacing-xl) 0;
}

.achievement-column-left {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.achievement-column-right {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* Catalog Preview */
.catalog-preview {
  text-align: center;
}

.catalog-image {
  width: 100%;
  max-width: 400px;
  height: auto;
  border-radius: var(--radius-none);
  margin-bottom: var(--spacing-md);
  box-shadow: var(--shadow-md);
}

.catalog-caption {
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

/* Technical Documents */
.technical-docs {
  text-align: center;
}

.tech-doc-image {
  width: 100%;
  height: auto;
  border-radius: var(--radius-none);
  margin-bottom: var(--spacing-sm);
  box-shadow: var(--shadow-sm);
}

.tech-doc-caption {
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  margin: 0;
}

/* Achievements Grid Small */
.achievements-grid-small {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.achievement-small-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-none);
  overflow: hidden;
  transition: all var(--transition-base);
}

.achievement-small-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.achievement-small-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

/* Product CTA */
.product-cta {
  background-color: var(--color-gray-50);
  border-radius: var(--radius-none);
  padding: var(--spacing-3xl);
  text-align: center;
}

.cta-title {
  font-size: var(--font-size-2xl);
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-lg);
}

.cta-text {
  font-size: var(--font-size-base);
  color: var(--color-gray-700);
  margin-bottom: var(--spacing-xl);
}

/* Responsive */
@media (max-width: 991px) {
  .achievements-grid-small {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .achievements-two-column {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
}

@media (max-width: 768px) {
  .product-hero {
    padding: var(--spacing-2xl) 0;
  }
  
  .product-hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .product-hero-with-bg {
    padding: 0;
  }
  
  .product-hero-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    min-height: 400px;
    padding: var(--spacing-xl) var(--spacing-md);
  }
  
  .product-hero-content::before {
    height: calc(100% - 40px);
  }

  .product-hero-with-bg.product-hero-toprunner .product-hero-content::after {
    width: 100%;
    opacity: 0.6;
  }
  
  .product-3d-image {
    max-width: 300px;
  }
  
  .product-hero-title-area {
    text-align: center;
    padding-left: 0;
  }

  .product-hero-badge-row {
    justify-content: center;
    margin-bottom: var(--spacing-sm);
  }

  .product-hero-release {
    text-align: center;
  }
  
  .product-hero-main-title {
    font-size: var(--font-size-3xl);
  }
  
  .product-hero-main-subtitle {
    font-size: var(--font-size-lg);
  }
  
  .product-main {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
  }
  
  .features-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .specs-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }
  
  .specs-header .btn {
    width: 100%;
  }
  
  .specs-table th {
    width: 120px;
    padding: var(--spacing-sm);
    font-size: var(--font-size-sm);
  }
  
  .specs-table td {
    padding: var(--spacing-sm);
    font-size: var(--font-size-sm);
  }
  
  .product-specs,
  .product-cta {
    padding: var(--spacing-md);
  }

  .toprunner-feature-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  .toprunner-cert-grid {
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  }
  
  .catalog-image {
    max-width: 100%;
  }
  
  .achievements-grid-small {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
  }
  
  .achievement-small-image {
    height: 150px;
  }
}

/* Solution Back Link */
.tx5000-card,
.content-box.ehps-main-box,
.content-box.topmold-main-box {
  position: relative;
}

.solution-back-link {
  position: absolute;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: 10;
}

.solution-back-link .btn,
.solution-back-link .btn-outline {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-sm);
  color: var(--color-white);
  background-color: var(--color-gray-100);
  border-color: var(--color-gray-100);
}

.solution-back-link .btn:hover,
.solution-back-link .btn-outline:hover {
  color: var(--color-white);
  background-color: var(--color-gray-200);
  border-color: var(--color-gray-200);
}

/* storage-stand-page / container-page: product-tx5000 と同様の暗いグレー＋白文字 */
.storage-stand-page .tx5000-card,
.container-page .tx5000-card {
  background: var(--color-gray-300);
  color: var(--color-white);
}

.storage-stand-page .tx5000-card .tx5000-heading,
.storage-stand-page .tx5000-card .tx-overview-title,
.storage-stand-page .tx5000-card .tx-section-title,
.storage-stand-page .tx5000-card .product-description,
.storage-stand-page .tx5000-card .tx5000-description,
.storage-stand-page .tx5000-card .tx5000-caption,
.container-page .tx5000-card .tx5000-heading,
.container-page .tx5000-card .tx-overview-title,
.container-page .tx5000-card .tx-section-title,
.container-page .tx5000-card .product-description,
.container-page .tx5000-card .tx5000-description,
.container-page .tx5000-card .tx5000-caption {
  color: var(--color-white);
}

.storage-stand-page .solution-back-link .btn-outline,
.storage-stand-page .solution-back-link .btn,
.storage-stand-page .solution-back-link-mobile .btn-outline,
.storage-stand-page .solution-back-link-mobile .btn,
.container-page .solution-back-link .btn-outline,
.container-page .solution-back-link .btn,
.container-page .solution-back-link-mobile .btn-outline,
.container-page .solution-back-link-mobile .btn {
  color: var(--color-white);
  background-color: transparent;
  border-color: var(--color-white);
}
.storage-stand-page .solution-back-link .btn-outline:hover,
.storage-stand-page .solution-back-link .btn:hover,
.storage-stand-page .solution-back-link-mobile .btn-outline:hover,
.storage-stand-page .solution-back-link-mobile .btn:hover,
.container-page .solution-back-link .btn-outline:hover,
.container-page .solution-back-link .btn:hover,
.container-page .solution-back-link-mobile .btn-outline:hover,
.container-page .solution-back-link-mobile .btn:hover {
  color: var(--color-gray-300);
  background-color: var(--color-white);
  border-color: var(--color-white);
}

.storage-stand-page .tx5000-cta .btn-primary,
.storage-stand-page .tx5000-cta .btn,
.container-page .tx5000-cta .btn-primary,
.container-page .tx5000-cta .btn {
  color: var(--color-white);
  background-color: transparent;
  border-color: var(--color-white);
}
.storage-stand-page .tx5000-cta .btn-primary:hover,
.storage-stand-page .tx5000-cta .btn:hover,
.container-page .tx5000-cta .btn-primary:hover,
.container-page .tx5000-cta .btn:hover {
  color: var(--color-gray-300);
  background-color: var(--color-white);
  border-color: var(--color-white);
}

.storage-stand-page .features-list li,
.container-page .features-list li {
  color: var(--color-white);
}
.storage-stand-page .features-list li::before,
.container-page .features-list li::before {
  color: var(--color-white);
}

/* 製品仕様表：product-tx5000 と同じスタイルに統一 */
.storage-stand-page .specs-table,
.container-page .specs-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--color-table-border);
  margin: 0;
  background: transparent;
}
.storage-stand-page .specs-table tr,
.container-page .specs-table tr {
  border-bottom: 1px solid var(--color-table-border);
}
.storage-stand-page .specs-table tr:last-child,
.container-page .specs-table tr:last-child {
  border-bottom: none;
}
.storage-stand-page .specs-table th,
.storage-stand-page .specs-table td,
.container-page .specs-table th,
.container-page .specs-table td {
  border-right: 1px solid var(--color-table-border);
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  font-size: var(--font-size-sm);
  line-height: var(--line-height-tight);
}
.storage-stand-page .specs-table th:last-child,
.storage-stand-page .specs-table td:last-child,
.container-page .specs-table th:last-child,
.container-page .specs-table td:last-child {
  border-right: none;
}
.storage-stand-page .specs-table th,
.container-page .specs-table th {
  width: 35%;
  background-color: var(--color-main-bg);
  color: var(--color-white);
  font-weight: var(--font-weight-semibold);
  vertical-align: middle;
}
.storage-stand-page .specs-table td,
.container-page .specs-table td {
  width: 65%;
  color: var(--color-white);
}

/* Mobile-only back button */
.solution-back-link-mobile {
  display: none;
}

@media (max-width: 768px) {
  /* Hide original button on mobile */
  .solution-back-link {
    display: none;
  }
  
  /* Show mobile-only button */
  .solution-back-link-mobile {
    display: block;
    position: fixed;
    bottom: 120px;
    right: 16px;
    z-index: 1000;
  }
  
  .solution-back-link-mobile .btn {
    min-width: 60px;
    height: 60px;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    line-height: 1.2;
    text-align: center;
    white-space: normal;
    color: var(--color-white);
    background-color: var(--color-gray-100);
    border-color: var(--color-gray-100);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    opacity: 1;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, color 0.2s ease, opacity 0.3s ease;
  }
  
  .solution-back-link-mobile.is-scrolling .btn {
    opacity: 0.7;
  }
  
  .solution-back-link-mobile .btn:active {
    transform: scale(0.9);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  }
  
  .solution-back-link-mobile .btn:hover {
    color: var(--color-white);
    background-color: var(--color-gray-200);
    border-color: var(--color-gray-200);
  }
}

@media (max-width: 576px) {
  .specs-table {
    display: block;
  }
  
  .specs-table tr {
    display: flex;
    flex-direction: column;
    border-bottom: 2px solid var(--color-gray-200);
    padding: var(--spacing-md) 0;
  }
  
  .specs-table th,
  .specs-table td {
    width: 100%;
    display: block;
    padding: var(--spacing-xs) 0;
  }
  
  .specs-table th {
    padding-bottom: var(--spacing-xs);
  }
  
  .specs-table td {
    padding-top: 0;
  }
  
  .achievements-grid-small {
    grid-template-columns: 1fr;
  }
  
  .achievement-small-image {
    height: 180px;
  }

  .product-hero-badge {
    height: 32px;
  }

  .product-hero-release {
    font-size: var(--font-size-xs);
  }

  .toprunner-cert-grid {
    grid-template-columns: 1fr;
  }

  .toprunner-recognition-list li {
    font-size: var(--font-size-sm);
  }
}

/* Product Download Section */
.product-download-section {
  margin-top: var(--spacing-2xl);
}

.tx-product-features,
.tx-product-gallery,
.tx-product-specs {
  background: var(--color-white);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-none);
  box-shadow: var(--shadow-sm);
}