:root {
      --bg-color: #f1f4ff;
      --card-bg: #ffffff;
      --text-main: #1e2432;
      --text-sub: #5c687e;
      --text-muted: #8b97ad;
      --accent: #4361ee;
      --accent-light: #e6ecfd;
      --border-color: #e2e8f7;
      --shadow-sm: 0 4px 12px rgba(30, 36, 50, 0.04);
      --shadow-md: 0 8px 24px rgba(30, 36, 50, 0.07);
      --radius-sm: 12px;
      --radius-md: 18px;
      --radius-lg: 24px;
    }

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

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

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 40px 20px 80px 20px;
    }

    /* Header Section */
    .hero-header {
      text-align: center;
      padding: 40px 20px 50px 20px;
    }

    .badge-tag {
      display: inline-block;
      background: var(--accent-light);
      color: var(--accent);
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      padding: 6px 16px;
      border-radius: 30px;
      margin-bottom: 16px;
    }

    .hero-title {
      font-size: clamp(28px, 4vw, 42px);
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
      line-height: 1.25;
      margin-bottom: 14px;
    }

    .hero-desc {
      font-size: clamp(15px, 2vw, 18px);
      color: var(--text-sub);
      max-width: 680px;
      margin: 0 auto;
    }

    /* Key Features Strip */
    .feature-strip {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 16px;
      margin-bottom: 50px;
    }

    .feature-chip {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 18px 20px;
      display: flex;
      align-items: center;
      gap: 14px;
      box-shadow: var(--shadow-sm);
    }

    .feature-icon-box {
      width: 42px;
      height: 42px;
      border-radius: 10px;
      background: var(--bg-color);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      font-weight: 800;
      font-size: 18px;
      flex-shrink: 0;
    }

    .feature-info h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 2px;
    }

    .feature-info p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* Section Headers */
    .section-header {
      margin-bottom: 24px;
      text-align: left;
    }

    .section-title {
      font-size: 22px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.3px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .section-title::before {
      content: "";
      display: inline-block;
      width: 4px;
      height: 20px;
      background: var(--accent);
      border-radius: 2px;
    }

    .section-subtitle {
      font-size: 14px;
      color: var(--text-sub);
      margin-top: 4px;
      margin-left: 14px;
    }

    /* 3-Column Image Matrix */
    .gallery-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-bottom: 60px;
    }

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

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

    .image-wrapper {
      position: relative;
      width: 100%;
      padding-top: 100%; /* 1:1 Aspect Ratio */
      background: var(--bg-color);
      overflow: hidden;
    }

    .image-wrapper img {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }

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

    .card-tag {
      font-size: 11px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.8px;
      color: var(--accent);
      background: var(--accent-light);
      display: inline-block;
      padding: 3px 8px;
      border-radius: 6px;
      margin-bottom: 8px;
      align-self: flex-start;
    }

    .card-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
      line-height: 1.4;
    }

    .card-desc {
      font-size: 13px;
      color: var(--text-sub);
      line-height: 1.5;
    }

    /* Product Specifications Module */
    .specs-section {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px 32px;
      margin-bottom: 60px;
      box-shadow: var(--shadow-sm);
    }

    .specs-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 24px;
    }

    .spec-item {
      padding: 16px;
      background: var(--bg-color);
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }

    .spec-label {
      font-size: 12px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      color: var(--text-muted);
      margin-bottom: 4px;
    }

    .spec-value {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
    }

    /* FAQ Section */
    .faq-section {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px 32px;
      box-shadow: var(--shadow-sm);
    }

    .faq-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 24px;
      margin-top: 28px;
    }

    .faq-item {
      background: var(--bg-color);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 22px;
    }

    .faq-question {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      display: flex;
      align-items: flex-start;
      gap: 10px;
    }

    .faq-q-badge {
      background: var(--accent);
      color: #ffffff;
      font-size: 12px;
      font-weight: 800;
      width: 22px;
      height: 22px;
      border-radius: 6px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      margin-top: 1px;
    }

    .faq-answer {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.6;
      padding-left: 32px;
    }

    /* Footer Note (Pure Info, No Links/Buttons) */
    .footer-info {
      text-align: center;
      padding: 40px 20px 0 20px;
      color: var(--text-muted);
      font-size: 13px;
    }

    /* Responsive Breakpoints */
    @media (max-width: 992px) {
      .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
      }
    }

    @media (max-width: 640px) {
      .container {
        padding: 20px 14px 60px 14px;
      }

      .hero-header {
        padding: 20px 10px 36px 10px;
      }

      .gallery-grid {
        grid-template-columns: 1fr;
        gap: 18px;
      }

      .specs-section,
      .faq-section {
        padding: 24px 18px;
      }

      .specs-grid,
      .faq-grid {
        grid-template-columns: 1fr;
      }
    }