:root {
      --bg-color: #f1f4ff;
      --card-bg: #ffffff;
      --text-main: #2b3144;
      --text-muted: #647087;
      --accent-soft: #e2e8fd;
      --border-light: rgba(180, 195, 235, 0.4);
      --shadow-sm: 0 4px 16px rgba(50, 70, 130, 0.05);
      --shadow-md: 0 8px 30px rgba(50, 70, 130, 0.08);
      --radius-lg: 20px;
      --radius-md: 14px;
    }

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

    body {
      background-color: var(--bg-color);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      padding: 24px 16px;
    }

    .container {
      max-width: 1080px;
      margin: 0 auto;
    }

    /* Header Section */
    .hero-header {
      text-align: center;
      padding: 36px 20px 28px;
      margin-bottom: 24px;
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-light);
    }

    .hero-tag {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: #4b68c8;
      background: var(--accent-soft);
      padding: 6px 16px;
      border-radius: 999px;
      margin-bottom: 14px;
    }

    .hero-title {
      font-size: clamp(1.4rem, 4vw, 2.2rem);
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.02em;
      line-height: 1.3;
      margin-bottom: 12px;
    }

    .hero-desc {
      font-size: clamp(0.95rem, 2vw, 1.05rem);
      color: var(--text-muted);
      max-width: 760px;
      margin: 0 auto;
    }

    /* Highlights Pills */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 16px;
      margin-bottom: 32px;
    }

    .feature-card {
      background: var(--card-bg);
      padding: 20px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-light);
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .feature-num {
      font-size: 1.1rem;
      font-weight: 800;
      color: #5572d4;
    }

    .feature-title {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .feature-text {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* Image Gallery Grid */
    .gallery-section {
      margin-bottom: 40px;
    }

    .section-title-wrap {
      text-align: center;
      margin-bottom: 24px;
    }

    .section-title {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .section-subtitle {
      font-size: 0.95rem;
      color: var(--text-muted);
    }

    .gallery-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .gallery-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-light);
      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);
    }

    .gallery-card.full-width {
      grid-column: span 2;
    }

    .img-box {
      width: 100%;
      aspect-ratio: 1 / 1;
      background: #f1f4ff;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }

    .card-info {
      padding: 20px 22px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .card-step {
      font-size: 0.75rem;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: #5572d4;
      margin-bottom: 6px;
    }

    .card-heading {
      font-size: 1.12rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
      line-height: 1.35;
    }

    .card-description {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* Specifications Table */
    .specs-section {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-light);
      margin-bottom: 36px;
    }

    .specs-title {
      font-size: 1.35rem;
      font-weight: 800;
      margin-bottom: 20px;
      text-align: center;
    }

    .specs-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 16px;
    }

    .spec-item {
      padding: 14px 18px;
      background: #f8faff;
      border-radius: var(--radius-md);
      border: 1px solid rgba(180, 195, 235, 0.3);
    }

    .spec-label {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 0.05em;
      margin-bottom: 4px;
    }

    .spec-value {
      font-size: 0.98rem;
      font-weight: 700;
      color: var(--text-main);
    }

    /* FAQ Section */
    .faq-section {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      padding: 36px 28px;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-light);
      margin-bottom: 28px;
    }

    .faq-header-wrap {
      text-align: center;
      margin-bottom: 26px;
    }

    .faq-title {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .faq-subtitle {
      font-size: 0.92rem;
      color: var(--text-muted);
    }

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

    .faq-item {
      padding: 20px;
      background: #f8faff;
      border-radius: var(--radius-md);
      border: 1px solid rgba(180, 195, 235, 0.4);
    }

    .faq-question {
      font-size: 1.02rem;
      font-weight: 700;
      color: #2b3144;
      margin-bottom: 8px;
      display: flex;
      align-items: flex-start;
      gap: 10px;
    }

    .faq-q-badge {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 22px;
      height: 22px;
      border-radius: 6px;
      background: #5572d4;
      color: #ffffff;
      font-size: 0.75rem;
      font-weight: 800;
      flex-shrink: 0;
      margin-top: 2px;
    }

    .faq-answer {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      padding-left: 32px;
    }

    /* Footer Note */
    .footer-note {
      text-align: center;
      padding: 20px 10px;
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* Mobile Responsive Adaptation */
    @media (max-width: 768px) {
      body {
        padding: 14px 10px;
      }

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

      .gallery-card.full-width {
        grid-column: span 1;
      }

      .hero-header {
        padding: 26px 16px 20px;
      }

      .specs-section,
      .faq-section {
        padding: 24px 16px;
      }

      .faq-answer {
        padding-left: 0;
        margin-top: 8px;
      }
    }