/* CSS Reset & Desktop-First Framework */
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      line-height: 1.6;
      color: #1e293b;
      background: #e0e5ff url('https://sc02.alicdn.com/kf/H926b17aaf1274b8583f439bd78a54cdaJ.jpg') repeat;
      background-attachment: fixed;
      padding: 40px 20px;
    }

    .container {
      max-width: 1160px;
      margin: 0 auto;
    }

    /* Common Card Styles */
    .card {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-radius: 20px;
      border: 1px solid rgba(255, 255, 255, 0.85);
      box-shadow: 0 12px 36px rgba(30, 41, 59, 0.08), 0 2px 8px rgba(30, 41, 59, 0.04);
      margin-bottom: 36px;
      overflow: hidden;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }

    .card:hover {
      box-shadow: 0 16px 44px rgba(30, 41, 59, 0.12), 0 4px 12px rgba(30, 41, 59, 0.06);
    }

    /* Header Section */
    .hero-section {
      padding: 48px;
    }

    .tag-pill {
      display: inline-block;
      padding: 6px 16px;
      background: #eef2ff;
      color: #4f46e5;
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 0.8px;
      text-transform: uppercase;
      border-radius: 9999px;
      margin-bottom: 16px;
      border: 1px solid #e0e7ff;
    }

    .product-title {
      font-size: 34px;
      font-weight: 800;
      color: #0f172a;
      line-height: 1.25;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }

    .product-subtitle {
      font-size: 17px;
      color: #475569;
      margin-bottom: 32px;
      max-width: 900px;
    }

    /* Highlight Pills */
    .highlight-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-bottom: 36px;
    }

    .highlight-item {
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: 12px;
      padding: 16px;
      text-align: center;
    }

    .highlight-item .icon {
      font-size: 24px;
      margin-bottom: 6px;
      display: block;
    }

    .highlight-item .label {
      font-size: 14px;
      font-weight: 700;
      color: #1e293b;
    }

    .highlight-item .sublabel {
      font-size: 12px;
      color: #64748b;
      margin-top: 2px;
    }

    /* Section Headers */
    .section-title {
      font-size: 26px;
      font-weight: 800;
      color: #0f172a;
      text-align: center;
      margin-bottom: 12px;
      letter-spacing: -0.3px;
    }

    .section-desc {
      font-size: 15px;
      color: #64748b;
      text-align: center;
      margin-bottom: 40px;
      max-width: 680px;
      margin-left: auto;
      margin-right: auto;
    }

    /* Deep-Dive Feature Rows */
    .feature-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      align-items: center;
      gap: 48px;
      padding: 48px;
      border-bottom: 1px solid #f1f5f9;
    }

    .feature-row:last-child {
      border-bottom: none;
    }

    .feature-row.reverse {
      direction: rtl;
    }

    .feature-row.reverse .feature-content {
      direction: ltr;
    }

    .feature-row.reverse .feature-visual {
      direction: ltr;
    }

    .feature-visual {
      position: relative;
      border-radius: 16px;
      overflow: hidden;
      box-shadow: 0 10px 25px rgba(15, 23, 42, 0.08);
      background: #f8fafc;
    }

    .feature-visual img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.4s ease;
    }

    .feature-visual:hover img {
      transform: scale(1.03);
    }

    .feature-badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      color: #4f46e5;
      background: #eef2ff;
      padding: 4px 12px;
      border-radius: 6px;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .feature-title {
      font-size: 24px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 14px;
      line-height: 1.3;
    }

    .feature-desc {
      font-size: 15px;
      color: #475569;
      line-height: 1.7;
      margin-bottom: 18px;
    }

    .feature-points {
      list-style: none;
    }

    .feature-points li {
      position: relative;
      padding-left: 24px;
      font-size: 14px;
      color: #334155;
      margin-bottom: 8px;
      line-height: 1.5;
    }

    .feature-points li::before {
      content: "✔";
      position: absolute;
      left: 0;
      top: 0;
      color: #10b981;
      font-weight: bold;
    }

    /* Specifications Table */
    .spec-section {
      padding: 48px;
    }

    .spec-table {
      width: 100%;
      border-collapse: collapse;
      margin-top: 16px;
    }

    .spec-table th, .spec-table td {
      padding: 16px 20px;
      text-align: left;
      font-size: 14px;
      border-bottom: 1px solid #e2e8f0;
    }

    .spec-table th {
      width: 32%;
      background: #f8fafc;
      color: #475569;
      font-weight: 600;
    }

    .spec-table td {
      color: #0f172a;
      font-weight: 500;
      background: #ffffff;
    }

    .spec-table tr:hover td {
      background: #f1f5f9;
    }

    /* Production Workflow Grid */
    .workflow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      padding: 0 48px 48px 48px;
    }

    .workflow-card {
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: 14px;
      padding: 24px 20px;
      position: relative;
    }

    .step-number {
      font-size: 28px;
      font-weight: 900;
      color: #cbd5e1;
      line-height: 1;
      margin-bottom: 12px;
    }

    .workflow-card h4 {
      font-size: 16px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 8px;
    }

    .workflow-card p {
      font-size: 13px;
      color: #64748b;
      line-height: 1.6;
    }

    /* FAQ Section */
    .faq-section {
      padding: 48px;
    }

    .faq-item {
      padding: 20px 0;
      border-bottom: 1px solid #e2e8f0;
    }

    .faq-item:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }

    .faq-q {
      font-size: 17px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .faq-q::before {
      content: "Q";
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 24px;
      height: 24px;
      background: #4f46e5;
      color: #ffffff;
      font-size: 12px;
      font-weight: 800;
      border-radius: 6px;
      flex-shrink: 0;
    }

    .faq-a {
      font-size: 14px;
      color: #475569;
      line-height: 1.7;
      padding-left: 34px;
    }

    /* Footer Banner */
    .cta-banner {
      background: linear-gradient(135deg, #4f46e5 0%, #3b82f6 100%);
      padding: 40px;
      text-align: center;
      color: #ffffff;
      border-radius: 20px;
    }

    .cta-banner h3 {
      font-size: 26px;
      font-weight: 800;
      margin-bottom: 10px;
    }

    .cta-banner p {
      font-size: 15px;
      opacity: 0.9;
      max-width: 650px;
      margin: 0 auto;
      line-height: 1.6;
    }

    @media (max-width: 900px) {
      .feature-row {
        grid-template-columns: 1fr;
        gap: 28px;
        padding: 32px 24px;
      }
      .feature-row.reverse {
        direction: ltr;
      }
      .highlight-grid, .workflow-grid {
        grid-template-columns: 1fr 1fr;
      }
    }