:root {
      --bg-color: #f1f4ff;
      --card-bg: #ffffff;
      --text-main: #2b3147;
      --text-muted: #697290;
      --border-color: #e2e8fa;
      --accent-pastel: #8d9bff;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-soft: 0 8px 24px rgba(66, 82, 140, 0.06);
      --shadow-hover: 0 12px 32px rgba(66, 82, 140, 0.12);
    }

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

    body {
      background-color: var(--bg-color);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      padding: 0;
    }

    .page-container {
      max-width: 1100px;
      margin: 0 auto;
      padding: 32px 16px 64px 16px;
    }

    /* Header Section */
    .header-banner {
      text-align: center;
      margin-bottom: 36px;
      padding: 24px 16px;
    }

    .tag-chip {
      display: inline-block;
      padding: 6px 14px;
      background: #e5ebff;
      color: #4a5dc7;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.5px;
      border-radius: 999px;
      margin-bottom: 14px;
      text-transform: uppercase;
    }

    .main-title {
      font-size: 28px;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: -0.5px;
      margin-bottom: 10px;
    }

    .sub-title {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 640px;
      margin: 0 auto;
    }

    /* Section Wrapper */
    .gallery-section {
      margin-bottom: 44px;
    }

    .section-title-wrap {
      display: flex;
      align-items: baseline;
      gap: 12px;
      margin-bottom: 20px;
      border-bottom: 2px solid #e1e7fa;
      padding-bottom: 10px;
    }

    .section-number {
      font-size: 20px;
      font-weight: 800;
      color: var(--accent-pastel);
    }

    .section-title {
      font-size: 19px;
      font-weight: 700;
      color: var(--text-main);
    }

    .section-desc {
      font-size: 13px;
      color: var(--text-muted);
      margin-left: auto;
    }

    /* Responsive Two-Column Grid */
    .image-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }

    .product-card {
      background-color: var(--card-bg);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-soft);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
      display: flex;
      flex-direction: column;
    }

    .product-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }

    .image-box {
      width: 100%;
      aspect-ratio: 1 / 1;
      background-color: #f1f4ff;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

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

    .card-info {
      padding: 16px 18px 20px 18px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .item-badge {
      font-size: 12px;
      font-weight: 700;
      color: #6375e8;
      margin-bottom: 6px;
      letter-spacing: 0.3px;
    }

    .item-name {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
      line-height: 1.4;
    }

    .item-details {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* Specs Quick View */
    .specs-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-soft);
      padding: 24px;
      margin-bottom: 44px;
    }

    .specs-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }

    .spec-item {
      padding: 14px;
      background: #f7f9ff;
      border-radius: var(--radius-md);
      border: 1px solid #e9eeff;
      text-align: center;
    }

    .spec-label {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 6px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .spec-value {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }

    /* FAQ Section */
    .faq-wrapper {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-soft);
      padding: 32px 28px;
    }

    .faq-header {
      margin-bottom: 24px;
      text-align: center;
    }

    .faq-title {
      font-size: 22px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .faq-subtitle {
      font-size: 14px;
      color: var(--text-muted);
    }

    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      border: 1px solid #e5eaf8;
      border-radius: var(--radius-md);
      background: #fafbff;
      overflow: hidden;
      transition: background 0.2s ease, border-color 0.2s ease;
    }

    .faq-item:hover {
      background: #ffffff;
      border-color: #d8e1fa;
    }

    .faq-question {
      padding: 16px 20px;
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 10px;
      user-select: none;
    }

    .q-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: #7d8ef0;
      flex-shrink: 0;
    }

    .faq-answer {
      padding: 0 20px 18px 38px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Footer text */
    .page-footer {
      text-align: center;
      margin-top: 48px;
      font-size: 13px;
      color: #8c96b5;
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .main-title {
        font-size: 22px;
      }
      .specs-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .image-grid {
        gap: 14px;
      }
      .card-info {
        padding: 12px 14px 16px 14px;
      }
      .item-name {
        font-size: 14px;
      }
      .item-details {
        font-size: 12px;
      }
      .faq-wrapper {
        padding: 24px 16px;
      }
    }

    @media (max-width: 480px) {
      .page-container {
        padding: 20px 12px 48px 12px;
      }
      .image-grid {
        grid-template-columns: 1fr;
        gap: 16px;
      }
      .specs-grid {
        grid-template-columns: 1fr;
      }
      .section-title-wrap {
        flex-direction: column;
        gap: 4px;
      }
      .section-desc {
        margin-left: 0;
      }
    }