body {
      font-family: 'Segoe UI', Roboto, system-ui, sans-serif;
      color: #1f3a44;
      background-color: #f9fcfd;
    }
    .navbar-brand {
      font-weight: 700;
      font-size: 1.8rem;
      color: #1e3c4f !important;
    }
    .section-title {
      font-size: 2.4rem;
      font-weight: 700;
      position: relative;
      display: inline-block;
      margin-bottom: 2rem;
    }
    .section-title:after {
      content: '';
      display: block;
      width: 70px;
      height: 4px;
      background: #d98c4a;
      border-radius: 4px;
      margin-top: 10px;
    }
    .patent-category {
      font-size: 1.8rem;
      font-weight: 600;
      margin: 2.5rem 0 1.5rem;
      color: #1e3c4f;
      border-left: 6px solid #d98c4a;
      padding-left: 1.2rem;
    }
    .patent-card {
      background: white;
      border-radius: 1.5rem;
      box-shadow: 0 12px 28px rgba(0,30,40,0.05);
      overflow: hidden;
      transition: 0.25s;
      height: 100%;
      border: 1px solid #eef4f7;
    }
    .patent-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 20px 35px rgba(43,92,111,0.15);
    }
    .patent-img-link {
      display: block;
      background: #e4edf3;
      height: 200px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      border-bottom: 2px solid #d0e0e8;
    }
    .patent-img-link img {
      max-width: 100%;
      max-height: 180px;
      object-fit: contain;
      transition: 0.2s;
    }
    .patent-img-link:hover img {
      transform: scale(1.02);
    }
    .patent-body {
      padding: 1.5rem;
    }
    .patent-title {
      font-weight: 700;
      font-size: 1.2rem;
      margin-bottom: 0.5rem;
      color: #1e3c4f;
    }
    .patent-number {
      font-family: monospace;
      background: #eef6fa;
      border-radius: 50px;
      padding: 0.2rem 1rem;
      display: inline-block;
      font-size: 0.9rem;
      margin-bottom: 0.8rem;
      color: #2b5c6f;
    }
    .patent-meta {
      font-size: 0.95rem;
      color: #4f6f7e;
      display: flex;
      gap: 1rem;
      border-top: 1px dashed #d0e0e8;
      padding-top: 0.8rem;
      margin-top: 0.5rem;
    }
    .btn-cta {
      background: #d98c4a;
      color: white;
      border-radius: 50px;
      padding: 0.8rem 2rem;
      font-weight: 600;
      border: none;
      transition: 0.3s;
    }
    .btn-cta:hover {
      background: #c57633;
      transform: translateY(-2px);
      box-shadow: 0 10px 20px rgba(217,140,74,0.2);
    }
    .breadcrumb {
      background: transparent;
      padding: 0.5rem 0;
    }
    .breadcrumb-item a {
      color: #2b5c6f;
      text-decoration: none;
    }
    .footer-link {
      color: #b6ccd9;
      text-decoration: none;
    }
    .footer-link:hover {
      color: white;
    }
    .badge-patent-type {
      background: #d98c4a20;
      color: #b55a2a;
      border-radius: 30px;
      padding: 0.2rem 1rem;
      font-size: 0.8rem;
      font-weight: 500;
    }