/* Global Styles to ensure centering and responsiveness */
  :root { 
    --brand-blue: #0056fb; 
    --text-dark: #1a202c; 
    --text-gray: #64748b; 
    --card-bg: #ffffff;
    --section-bg: #f8fafc;
  }
  .sinmar-lp-body { 
    font-family: 'Inter', -apple-system, sans-serif; 
    color: var(--text-dark); 
    background: #fff; 
    margin: 0; 
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center; /* Horizontally center all blocks */
    width: 100%;
  }
  .container { 
    width: 100%; 
    max-width: 1100px; 
    padding: 0 20px; 
    box-sizing: border-box; 
    margin: 0 auto;
  }

  /* 01. Hero Banner */
  .hero-banner { margin-top: 20px; text-align: center; }
  .hero-banner img { width: 100%; border-radius: 12px; display: block; }

  /* 新增：过渡板块样式 */
  .intro-block {
    text-align: center;
    padding: 50px 0 20px 0;
  }
  .intro-block h1 {
    font-size: 32px;
    font-weight: 900;
    color: var(--text-dark);
    margin-bottom: 15px;
    letter-spacing: -0.5px;
  }
  .intro-block p {
    font-size: 16px;
    color: var(--text-gray);
    max-width: 850px;
    margin: 0 auto;
    line-height: 1.6;
  }

  /* 02. TYPE Section - UPDATED for Strict 1:1 Ratio */
  .type-section { margin: 40px 0; text-align: center; }
  .type-section h2 { font-size: 26px; font-weight: 800; margin-bottom: 30px; color: var(--brand-blue); }
  .type-grid { 
    display: grid; 
    grid-template-columns: repeat(3, 1fr); 
    gap: 20px; 
  }
  .type-card { background: #fff; border-radius: 12px; border: 1px solid #eee; overflow: hidden; transition: 0.3s; }
  .type-card:hover { transform: translateY(-5px); box-shadow: 0 10px 20px rgba(0,0,0,0.05); }

  .type-card .img-container {
    width: 100%;
    aspect-ratio: 1 / 1; 
    background-color: #ffffff; 
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
  }
  .type-card img { 
    max-width: 100%; 
    max-height: 100%; 
    display: block; 
    object-fit: contain; 
  }

  .type-name { padding: 15px; font-weight: 700; font-size: 14px; background: #fafafa; border-top: 1px solid #eee; }

  /* 03. Features Grid */
  .features-grid { 
    display: grid; 
    grid-template-columns: repeat(2, 1fr); 
    gap: 25px; 
    margin: 40px 0; 
  }
  .feature-card { 
    background: var(--card-bg); 
    padding: 30px; 
    border-radius: 12px; 
    border: 1px solid #eef2f7; 
    position: relative;
    box-shadow: 0 4px 20px rgba(0,0,0,0.02);
    text-align: left;
  }
  .feature-card::before { 
    content: ""; position: absolute; left: 0; top: 30px; width: 4px; height: 24px; 
    background: var(--brand-blue); border-radius: 0 4px 4px 0; 
  }
  .feature-card h3 { 
    color: var(--brand-blue); font-size: 18px; font-weight: 800; 
    margin: 0 0 20px 0; padding-left: 15px; text-transform: uppercase; 
  }
  .feature-card ul { list-style: none; padding: 0; margin: 0; }
  .feature-card li { 
    padding: 12px 0; font-size: 14px; border-bottom: 1px solid #f8fafc; 
    display: flex; justify-content: space-between; align-items: flex-start;
  }
  .feature-card li:last-child { border-bottom: none; }
  .feature-card li::before { 
    content: "✓"; color: var(--brand-blue); font-weight: 900; margin-right: 12px; flex-shrink: 0; 
  }
  .label { color: var(--text-gray); flex: 1; text-align: left; }
  .value { font-weight: 600; color: var(--text-dark); flex: 1.2; text-align: right; }

  /* 04. Laboratory Test Section */
  .lab-section { 
    background: var(--section-bg); 
    border-radius: 20px; 
    padding: 50px; 
    margin: 40px 0; 
    display: flex; 
    align-items: center; 
    gap: 40px; 
  }
  .lab-image { flex: 1.2; }
  .lab-image img { width: 100%; border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.1); }
  .lab-content { flex: 1; text-align: left; }
  .lab-badge { 
    background: var(--brand-blue); color: #fff; padding: 4px 12px; 
    border-radius: 4px; font-size: 11px; font-weight: 700; display: inline-block; 
  }
  .lab-content h2 { font-size: 28px; margin: 15px 0; font-weight: 800; }
  .lab-desc { font-size: 14px; color: var(--text-gray); margin-bottom: 25px; line-height: 1.6; }
  .lab-stats { display: flex; gap: 15px; }
  .stat-item { 
    background: #fff; padding: 15px; border-radius: 10px; flex: 1; 
    text-align: center; border: 1px solid #eef2f7; 
  }
  .stat-item strong { color: var(--brand-blue); font-size: 18px; display: block; }
  .stat-item span { font-size: 11px; color: #999; }

  /* 05. Trust Strip Footer */
  .trust-strip { 
    background: #0a1128; color: #fff; padding: 35px 0; 
    border-radius: 15px; margin-bottom: 30px; width: 100%;
  }
  .trust-flex { display: flex; justify-content: space-around; flex-wrap: wrap; gap: 15px; }
  .trust-box { font-size: 13px; font-weight: 700; display: flex; align-items: center; gap: 6px; }

  /* 06. Text Advantage Section */
  .advantage-section { padding: 40px 0; text-align: center; }
  .advantage-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; margin-top: 30px; }
  .adv-item h4 { font-size: 17px; margin-bottom: 12px; color: var(--brand-blue); font-weight: 800; }
  .adv-item p { font-size: 14px; color: var(--text-gray); line-height: 1.6; margin: 0; }

  /* Mobile Adaptation */
  @media (max-width: 768px) {
    .intro-block h1 { font-size: 24px; }
    .intro-block p { font-size: 14px; }
    .type-grid { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .advantage-grid { grid-template-columns: 1fr; }
    .lab-section { flex-direction: column; padding: 30px; text-align: center; }
    .lab-content { text-align: center; }
    .trust-flex { flex-direction: column; align-items: center; gap: 12px; }
  }