/* =========================================================================
       MULTI-MATERIAL SWIVEL USB FLASH DRIVE DISPLAY STYLESHEET
       Theme: Custom Multi-Material 360° Swivel USB Flash Drive Master Collection
       Base Background: #f1f4ff (Strictly Enforced)
       Design Language: Modern Tech Merch, Multi-Material Craft & Creator EDC
       Zero Links, Zero Buttons, Responsive Desktop & Mobile (SSR Pure HTML/CSS)
       Zero Brand / Company / Logo Mentions in Text
       ========================================================================= */

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

    body {
      background-color: #f1f4ff;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      color: #1e293b;
      line-height: 1.65;
      padding: 30px 16px;
      -webkit-font-smoothing: antialiased;
    }

    .main-container {
      max-width: 1140px;
      margin: 0 auto;
      background: #ffffff;
      border-radius: 28px;
      padding: 42px 36px;
      box-shadow: 0 12px 48px rgba(99, 102, 241, 0.05), 0 2px 10px rgba(0, 0, 0, 0.02);
      border: 1px solid rgba(226, 232, 240, 0.8);
    }

    /* ==================== 1. HERO HEADER ==================== */
    .hero-banner {
      background: linear-gradient(135deg, #fef3c7 0%, #faf5ff 35%, #eef2ff 70%, #ecfdf5 100%);
      border: 1px solid #e0e7ff;
      border-radius: 24px;
      padding: 46px 32px;
      text-align: center;
      margin-bottom: 44px;
      position: relative;
      overflow: hidden;
      box-shadow: 0 8px 30px rgba(99, 102, 241, 0.06);
    }

    .badge-pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: linear-gradient(135deg, #d97706 0%, #7c3aed 50%, #4f46e5 100%);
      color: #ffffff;
      font-size: 11.5px;
      font-weight: 800;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      padding: 6px 20px;
      border-radius: 9999px;
      margin-bottom: 16px;
      box-shadow: 0 4px 14px rgba(124, 58, 237, 0.28);
    }

    .hero-title {
      font-size: 32px;
      font-weight: 900;
      color: #0f172a;
      line-height: 1.25;
      margin-bottom: 14px;
      letter-spacing: -0.8px;
    }

    .hero-subtitle {
      font-size: 18px;
      font-weight: 700;
      color: #4f46e5;
      display: block;
      margin-top: 6px;
      letter-spacing: -0.2px;
    }

    .hero-desc {
      font-size: 14.5px;
      color: #475569;
      max-width: 880px;
      margin: 0 auto 24px auto;
      line-height: 1.75;
    }

    .hero-tags {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 10px;
    }

    .tag-item {
      background: #ffffff;
      border: 1px solid #cbd5e1;
      padding: 6px 16px;
      border-radius: 9999px;
      font-size: 12.5px;
      font-weight: 700;
      color: #334155;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* ==================== 2. AI SOURCING OVERVIEW ==================== */
    .ai-overview-card {
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-left: 5px solid #4f46e5;
      border-radius: 18px;
      padding: 26px 28px;
      margin-bottom: 44px;
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.02);
    }

    .ai-overview-head {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 12px;
    }

    .ai-overview-title {
      font-size: 16px;
      font-weight: 800;
      color: #0f172a;
    }

    .ai-overview-text {
      font-size: 13.5px;
      color: #475569;
      line-height: 1.7;
      margin-bottom: 18px;
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 14px;
    }

    .metric-pill {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 12px;
      padding: 12px 14px;
      text-align: center;
    }

    .metric-k {
      font-size: 11px;
      color: #64748b;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 4px;
    }

    .metric-v {
      font-size: 14px;
      font-weight: 800;
      color: #0f172a;
    }

    /* ==================== 3. SECTION HEADINGS ==================== */
    .section-header {
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
      margin-bottom: 24px;
      border-bottom: 2px solid #f1f5f9;
      padding-bottom: 12px;
    }

    .section-title {
      font-size: 22px;
      font-weight: 900;
      color: #0f172a;
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .section-subtitle {
      font-size: 13px;
      color: #64748b;
      margin-top: 4px;
    }

    .section-chip {
      background: #eef2ff;
      color: #4338ca;
      font-size: 11.5px;
      font-weight: 800;
      padding: 4px 12px;
      border-radius: 8px;
      border: 1px solid #c7d2fe;
      letter-spacing: 0.5px;
      text-transform: uppercase;
    }

    /* ==================== 4. GALLERY SHOWCASE GRID ==================== */
    .gallery-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 26px;
      margin-bottom: 48px;
    }

    .gallery-card {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 20px;
      overflow: hidden;
      box-shadow: 0 4px 18px rgba(0, 0, 0, 0.03);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }

    .gallery-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 32px rgba(99, 102, 241, 0.08);
      border-color: #cbd5e1;
    }

    .gallery-img-wrap {
      background: #fbfbfe;
      position: relative;
      border-bottom: 1px solid #f1f5f9;
      overflow: hidden;
    }

    .gallery-img-wrap img {
      width: 100%;
      height: auto;
      display: block;
      object-fit: contain;
      transition: transform 0.3s ease;
    }

    .gallery-card:hover .gallery-img-wrap img {
      transform: scale(1.015);
    }

    .gallery-badge {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(15, 23, 42, 0.85);
      color: #ffffff;
      font-size: 11px;
      font-weight: 800;
      padding: 4px 12px;
      border-radius: 6px;
      letter-spacing: 0.5px;
      text-transform: uppercase;
      backdrop-filter: blur(4px);
    }

    .gallery-body {
      padding: 22px 20px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      flex-grow: 1;
    }

    .card-title {
      font-size: 17.5px;
      font-weight: 800;
      color: #0f172a;
      line-height: 1.35;
      margin-bottom: 8px;
    }

    .card-desc {
      font-size: 13px;
      color: #475569;
      line-height: 1.6;
      margin-bottom: 14px;
    }

    .card-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-bottom: 14px;
    }

    .card-tag {
      font-size: 11px;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: 6px;
    }

    .card-tag-amber  { background: #fef3c7; color: #b45309; border: 1px solid #fde68a; }
    .card-tag-dark   { background: #f1f5f9; color: #334155; border: 1px solid #cbd5e1; }
    .card-tag-indigo { background: #eef2ff; color: #4338ca; border: 1px solid #c7d2fe; }
    .card-tag-green  { background: #dcfce7; color: #15803d; border: 1px solid #bbf7d0; }
    .card-tag-pink   { background: #fdf2f8; color: #db2777; border: 1px solid #fbcfe8; }
    .card-tag-purple { background: #f3e8ff; color: #7e22ce; border: 1px solid #e9d5ff; }
    .card-tag-blue   { background: #e0f2fe; color: #0369a1; border: 1px solid #bae6fd; }

    .card-highlight {
      background: #f8fafc;
      border-left: 3px solid #4f46e5;
      padding: 10px 14px;
      border-radius: 4px 8px 8px 4px;
      font-size: 12px;
      color: #334155;
      line-height: 1.5;
    }

    /* ==================== 5. CRAFT SPECIFICATIONS TABLE ==================== */
    .specs-box {
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: 20px;
      padding: 30px 28px;
      margin-bottom: 48px;
    }

    .specs-table {
      width: 100%;
      border-collapse: collapse;
      font-size: 13.5px;
      margin-top: 10px;
    }

    .specs-table th {
      background: #ffffff;
      color: #0f172a;
      font-weight: 800;
      text-align: left;
      padding: 14px 18px;
      border-bottom: 2px solid #cbd5e1;
      font-size: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .specs-table td {
      padding: 13px 18px;
      border-bottom: 1px solid #e2e8f0;
      color: #475569;
      vertical-align: top;
      line-height: 1.6;
    }

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

    .specs-table tr:hover td {
      background-color: #ffffff;
    }

    .spec-label {
      font-weight: 800;
      color: #0f172a;
      white-space: nowrap;
    }

    /* ==================== 6. 7-ITEM NATIVE FAQ ACCORDION ==================== */
    .faq-container {
      margin-bottom: 44px;
    }

    .faq-details {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 12px;
      margin-bottom: 12px;
      overflow: hidden;
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .faq-details:hover {
      border-color: #cbd5e1;
    }

    .faq-details[open] {
      border-color: #4f46e5;
      box-shadow: 0 4px 14px rgba(79, 70, 229, 0.08);
    }

    .faq-summary {
      padding: 16px 20px;
      font-size: 15px;
      font-weight: 800;
      color: #0f172a;
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
      transition: background 0.2s ease, color 0.2s ease;
    }

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

    .faq-summary::after {
      content: "+";
      font-size: 20px;
      font-weight: 700;
      color: #4f46e5;
      transition: transform 0.2s ease;
      margin-left: 10px;
      flex-shrink: 0;
    }

    .faq-details[open] .faq-summary::after {
      content: "−";
      transform: rotate(180deg);
    }

    .faq-details[open] .faq-summary {
      background: #eef2ff;
      color: #3730a3;
    }

    .faq-body {
      padding: 16px 20px 20px 20px;
      font-size: 13.5px;
      color: #475569;
      line-height: 1.7;
      border-top: 1px solid #c7d2fe;
      background: #ffffff;
    }

    /* ==================== 7. TRUST BADGES GRID ==================== */
    .trust-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }

    .trust-card {
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: 16px;
      padding: 20px 16px;
      text-align: center;
    }

    .trust-icon {
      font-size: 26px;
      margin-bottom: 8px;
      display: block;
    }

    .trust-title {
      font-size: 14.5px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 4px;
    }

    .trust-desc {
      font-size: 12px;
      color: #64748b;
      line-height: 1.45;
    }

    /* ==================== RESPONSIVE STYLING (MOBILE BREAKPOINTS) ==================== */
    @media (max-width: 860px) {
      body {
        padding: 16px 10px;
      }

      .main-container {
        padding: 24px 16px;
        border-radius: 20px;
      }

      .hero-banner {
        padding: 30px 18px;
        border-radius: 18px;
        margin-bottom: 30px;
      }

      .hero-title {
        font-size: 23px;
      }

      .hero-subtitle {
        font-size: 15px;
      }

      .hero-desc {
        font-size: 13px;
      }

      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
      }

      .gallery-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-bottom: 36px;
      }

      .specs-box {
        padding: 20px 14px;
        border-radius: 16px;
      }

      .specs-table {
        font-size: 12.5px;
      }

      .specs-table th,
      .specs-table td {
        padding: 10px 12px;
      }

      .faq-summary {
        font-size: 13.5px;
        padding: 13px 14px;
      }

      .faq-body {
        font-size: 12.5px;
        padding: 12px 14px 16px 14px;
      }

      .trust-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
      }

      .trust-card {
        padding: 14px 10px;
      }
    }