:root {
      --bg-color: #f1f4ff;
      --card-bg: #ffffff;
      --text-main: #232733;
      --text-muted: #5c6275;
      --text-light: #8990a5;
      --accent-cinnabar: #a93226;
      --accent-indigo: #2c4251;
      --accent-gold: #c5a059;
      --border-color: #e2e7f5;
      --border-radius: 16px;
      --shadow-subtle: 0 8px 24px rgba(35, 39, 51, 0.05);
      --shadow-hover: 0 16px 36px rgba(35, 39, 51, 0.08);
      --font-display: "Cinzel", "Playfair Display", Georgia, serif;
      --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    }

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

    body {
      background-color: var(--bg-color);
      color: var(--text-main);
      font-family: var(--font-body);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      padding: 0;
      margin: 0;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 32px 20px 80px 20px;
    }

    /* Header / Hero Banner */
    .hero-section {
      text-align: center;
      padding: 40px 16px 48px;
      margin-bottom: 32px;
    }

    .hero-badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 2.5px;
      text-transform: uppercase;
      color: var(--accent-cinnabar);
      background-color: rgba(169, 50, 38, 0.08);
      padding: 6px 16px;
      border-radius: 30px;
      margin-bottom: 16px;
    }

    .hero-title {
      font-family: var(--font-display);
      font-size: clamp(28px, 5vw, 44px);
      font-weight: 700;
      letter-spacing: -0.5px;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.25;
    }

    .hero-subtitle {
      font-size: clamp(15px, 2.5vw, 17px);
      color: var(--text-muted);
      max-width: 720px;
      margin: 0 auto;
      font-weight: 400;
    }

    /* Section Common Styles */
    .section-block {
      margin-bottom: 56px;
    }

    .section-header {
      margin-bottom: 24px;
      text-align: left;
    }

    .section-tag {
      font-size: 11px;
      font-weight: 700;
      letter-spacing: 2px;
      text-transform: uppercase;
      color: var(--accent-gold);
      margin-bottom: 6px;
      display: block;
    }

    .section-title {
      font-family: var(--font-display);
      font-size: clamp(22px, 3.5vw, 28px);
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .section-desc {
      font-size: 14px;
      color: var(--text-muted);
      max-width: 650px;
    }

    /* Responsive Image Grids: 2 Columns on Desktop & Tablet, 1 Column on Mobile */
    .image-grid-2col {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .image-grid-4col {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    /* Card Item Style */
    .product-card {
      background-color: var(--card-bg);
      border-radius: var(--border-radius);
      overflow: hidden;
      box-shadow: var(--shadow-subtle);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      border: 1px solid var(--border-color);
    }

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

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

    .image-wrapper img {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }

    .product-card:hover .image-wrapper img {
      transform: scale(1.025);
    }

    .card-info {
      padding: 18px 20px;
      background-color: var(--card-bg);
      flex-grow: 1;
    }

    .card-title {
      font-family: var(--font-display);
      font-size: 16px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

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

    /* Specification Highlights Strip */
    .spec-strip {
      background-color: var(--card-bg);
      border-radius: var(--border-radius);
      border: 1px solid var(--border-color);
      padding: 28px 24px;
      margin-bottom: 56px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      box-shadow: var(--shadow-subtle);
    }

    .spec-item {
      text-align: center;
      padding: 10px;
    }

    .spec-number {
      font-family: var(--font-display);
      font-size: 26px;
      font-weight: 700;
      color: var(--accent-cinnabar);
      margin-bottom: 6px;
    }

    .spec-label {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .spec-sub {
      font-size: 12px;
      color: var(--text-muted);
    }

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

    .faq-item {
      border-bottom: 1px solid var(--border-color);
      padding: 18px 0;
    }

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

    .faq-item:first-child {
      padding-top: 0;
    }

    .faq-question {
      font-family: var(--font-display);
      font-size: 16px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
    }

    .faq-question::before {
      content: "Q";
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 24px;
      height: 24px;
      background-color: rgba(169, 50, 38, 0.1);
      color: var(--accent-cinnabar);
      border-radius: 50%;
      font-size: 12px;
      font-weight: 700;
      margin-right: 12px;
      flex-shrink: 0;
    }

    .faq-answer {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      padding-left: 36px;
    }

    /* Footer Note (Pure Showcase, No Links or Buttons) */
    .footer-note {
      text-align: center;
      padding-top: 48px;
      font-size: 13px;
      color: var(--text-light);
      letter-spacing: 0.5px;
    }

    /* Mobile Responsive Adaptation */
    @media (max-width: 900px) {
      .image-grid-4col {
        grid-template-columns: repeat(2, 1fr);
      }
      .spec-strip {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 640px) {
      .container {
        padding: 20px 14px 60px 14px;
      }
      .hero-section {
        padding: 24px 8px 32px;
      }
      .image-grid-2col {
        grid-template-columns: 1fr;
        gap: 18px;
      }
      .image-grid-4col {
        grid-template-columns: 1fr;
        gap: 18px;
      }
      .spec-strip {
        grid-template-columns: 1fr;
        gap: 16px;
        padding: 20px 16px;
      }
      .faq-container {
        padding: 24px 18px;
      }
      .faq-answer {
        padding-left: 0;
        margin-top: 6px;
      }
    }