:root {
    --ht-primary: #1e293b; /* 权威企业深蓝 */
    --ht-accent: #f97316;  /* 工业警示橙 */
    --ht-text: #334155;    /* 易读正文灰 */
    --ht-bg: #ffffff;
    --ht-surface: #f8fafc;
    --ht-border: #e2e8f0;
  }
  .ht-pro-wrapper {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--ht-text);
    max-width: 1200px;
    margin: 0 auto;
    padding: 50px 20px;
    box-sizing: border-box;
  }
  
  /* Top Hero Section: Asymmetric Enterprise Look */
  .ht-pro-hero {
    display: flex;
    gap: 60px;
    align-items: stretch;
    margin-bottom: 70px;
  }
  .ht-pro-image {
    flex: 1;
    min-width: 40%;
    position: relative;
    border-radius: 4px;
    box-shadow: 20px 20px 0px var(--ht-surface), 0 10px 30px rgba(0,0,0,0.05);
  }
  .ht-pro-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: 4px;
    border: 1px solid var(--ht-border);
  }
  .ht-pro-content {
    flex: 1.2;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  .ht-pro-content p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--ht-text);
    margin-bottom: 24px;
    text-align: justify;
  }
  
  /* Minimalist Divider */
  .ht-pro-divider {
    text-align: center;
    color: #cbd5e1;
    letter-spacing: 6px;
    margin: 50px 0;
    font-weight: 300;
  }

  /* CSS Counter Grid System (No HTML bloat) */
  .ht-pro-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    counter-reset: feature-counter;
  }
  .ht-pro-card {
    background: var(--ht-bg);
    border: 1px solid var(--ht-border);
    padding: 35px 30px;
    border-radius: 4px;
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    overflow: hidden;
  }
  .ht-pro-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
    border-bottom: 3px solid var(--ht-accent);
  }
  
  /* Large Watermark Numbers overlay */
  .ht-pro-card::before {
    counter-increment: feature-counter;
    content: "0" counter(feature-counter);
    position: absolute;
    top: -15px;
    right: -10px;
    font-size: 110px;
    font-weight: 900;
    line-height: 1;
    color: var(--ht-surface);
    z-index: 1;
    transition: color 0.3s ease;
    pointer-events: none;
  }
  .ht-pro-card:hover::before {
    color: rgba(249, 115, 22, 0.04);
  }
  
  .ht-pro-card h3 {
    position: relative;
    z-index: 2;
    font-size: 18px;
    color: var(--ht-primary);
    margin: 0 0 16px 0;
    display: flex;
    align-items: center;
    gap: 15px;
    font-weight: 700;
  }
  .ht-pro-card h3::before {
    content: "";
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--ht-accent);
  }
  .ht-pro-card p {
    position: relative;
    z-index: 2;
    font-size: 15px;
    line-height: 1.7;
    color: #475569;
    margin: 0;
  }

  /* Responsive Breakpoints */
  @media (max-width: 992px) {
    .ht-pro-hero {
      flex-direction: column;
      gap: 40px;
    }
    .ht-pro-image {
      box-shadow: 10px 10px 0px var(--ht-surface);
    }
    .ht-pro-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }
  @media (max-width: 768px) {
    .ht-pro-grid {
      grid-template-columns: 1fr;
    }
  }