:root {
      --bg-primary: #f1f4ff;
      --card-bg: #ffffff;
      --text-main: #2b334a;
      --text-muted: #5e6b8c;
      --accent-soft: #7c88b6;
      --border-color: #d8e0fb;
      --shadow-subtle: 0 10px 25px rgba(110, 130, 190, 0.08);
      --shadow-hover: 0 16px 35px rgba(110, 130, 190, 0.16);
      --radius-lg: 20px;
      --radius-md: 14px;
    }

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

    body {
      background-color: var(--bg-primary);
      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-bottom: 80px;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* Header Section */
    .hero-header {
      text-align: center;
      padding: 60px 0 35px;
    }

    .tag-chip {
      display: inline-block;
      padding: 6px 18px;
      border-radius: 999px;
      background: rgba(124, 136, 182, 0.12);
      color: var(--accent-soft);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      margin-bottom: 16px;
    }

    .hero-header h1 {
      font-size: clamp(28px, 4vw, 42px);
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #1e2538;
      margin-bottom: 12px;
    }

    .hero-header p {
      font-size: clamp(15px, 2vw, 17px);
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto;
    }

    /* Section Component */
    .section-wrap {
      margin-top: 48px;
    }

    .section-heading {
      margin-bottom: 24px;
      border-left: 4px solid var(--accent-soft);
      padding-left: 14px;
    }

    .section-heading h2 {
      font-size: clamp(20px, 2.5vw, 26px);
      font-weight: 700;
      color: #1f273d;
    }

    .section-heading p {
      font-size: 14px;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* Product Grid */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
      gap: 24px;
    }

    .product-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-subtle);
      border: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
      transition: transform 0.28s ease, box-shadow 0.28s ease;
    }

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

    .image-container {
      width: 100%;
      aspect-ratio: 1 / 1;
      background-color: var(--bg-primary);
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .image-container img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      display: block;
      transition: transform 0.35s ease;
    }

    .product-card:hover .image-container img {
      transform: scale(1.03);
    }

    .card-body {
      padding: 18px 20px 22px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }

    .card-label {
      font-size: 11px;
      font-weight: 700;
      letter-spacing: 1px;
      text-transform: uppercase;
      color: var(--accent-soft);
      margin-bottom: 6px;
    }

    .card-title {
      font-size: 17px;
      font-weight: 700;
      color: #21293f;
      margin-bottom: 8px;
    }

    .card-desc {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* Highlights Section */
    .spec-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 18px;
      margin-top: 20px;
    }

    .spec-box {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-subtle);
    }

    .spec-box h3 {
      font-size: 16px;
      font-weight: 700;
      color: #1e263d;
      margin-bottom: 6px;
    }

    .spec-box p {
      font-size: 13.5px;
      color: var(--text-muted);
    }

    /* FAQ Section */
    .faq-section {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px 32px;
      box-shadow: var(--shadow-subtle);
      margin-top: 24px;
    }

    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-top: 20px;
    }

    .faq-item {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      background-color: #fafbfe;
      overflow: hidden;
    }

    .faq-item summary {
      padding: 16px 20px;
      font-weight: 700;
      font-size: 15px;
      color: #20273c;
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-item summary::-webkit-details-marker {
      display: none;
    }

    .faq-item summary::after {
      content: '+';
      font-size: 20px;
      font-weight: 400;
      color: var(--accent-soft);
      transition: transform 0.2s ease;
    }

    .faq-item[open] summary::after {
      content: '−';
    }

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

    /* Footer Note */
    .page-footer {
      text-align: center;
      margin-top: 60px;
      padding-top: 24px;
      border-top: 1px solid var(--border-color);
      font-size: 13px;
      color: var(--text-muted);
    }

    @media (max-width: 600px) {
      .container {
        padding: 0 16px;
      }
      .product-grid {
        grid-template-columns: 1fr;
        gap: 18px;
      }
      .faq-section {
        padding: 24px 18px;
      }
    }