.s4 {
        background: #ffffff;
        padding: 7rem 5%;
        display: grid;
        grid-template-columns: 320px 1fr;
        gap: 5rem;
        align-items: start;
      }

      .s4-left {
        position: sticky;
        top: 6rem;
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 1.2rem;
      }

      .s4-badge {
        display: inline-block;
        border: 1px solid #d0cfc8;
        color: #1a1a18;
        font-size: 0.8rem;
        font-weight: 600;
        padding: 0.3rem 0.9rem;
        border-radius: 50px;
      }

      .s4-left h2 {
        font-family: 'El Messiri', sans-serif;
        font-size: clamp(1.9rem, 2.8vw, 2.6rem);
        font-weight: 900;
        color: #1a1a18;
        line-height: 1.18;
        letter-spacing: -0.03em;
      }

      .s4-left p {
        font-size: 0.93rem;
        color: #8a8a82;
        line-height: 1.7;
      }

      .btn-s4 {
        display: inline-flex;
        align-items: center;
        gap: 0.55rem;
        background: #1a1a18;
        color: #ffffff;
        font-family: 'El Messiri', sans-serif;
        font-size: 0.9rem;
        font-weight: 700;
        padding: 0.75rem 1.4rem;
        border-radius: 8px;
        text-decoration: none;
        transition: opacity 0.2s;
        margin-top: 0.4rem;
      }

      .btn-s4:hover { opacity: 0.82; }
      
      .btn-dock {
          color:#1a1a18;
      }
      
      .btn-dock-grid {
          color:#1a1a18;
      }

      .btn-s4-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 2px;
        width: 14px;
        flex-shrink: 0;
      }

      .btn-s4-grid span {
        width: 5px; height: 5px;
        background: #fff;
        border-radius: 1px;
        display: block;
      }

      .s4-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 1px;
        background: #e8e6e0;
        border: 1px solid #e8e6e0;
        border-radius: 16px;
        overflow: hidden;
      }

      .s4-item {
        background: #ffffff;
        padding: 2.2rem 2rem;
        display: flex;
        flex-direction: column;
        gap: 1rem;
        transition: background 0.2s;
      }

      .s4-item:hover { background: #fafaf8; }

      .s4-icon {
        width: 44px; height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
      }

      .s4-icon svg {
        width: 36px; height: 36px;
        stroke: #1a1a18;
        fill: none;
        stroke-width: 1.5;
        stroke-linecap: round;
        stroke-linejoin: round;
      }

      .s4-item h3 {
        font-family: 'El Messiri', sans-serif;
        font-size: 1.05rem;
        font-weight: 800;
        color: #1a1a18;
        line-height: 1.3;
      }

      .s4-item p {
        font-size: 0.88rem;
        color: #8a8a82;
        line-height: 1.65;
      }

      @media (max-width: 900px) {
        .s4 { grid-template-columns: 1fr; gap: 3rem; }
        .s4-left { position: static; }
        
        .btn-desktop,
        .btn-dock {
          display: none !important;
        }
        
      }

      @media (max-width: 600px) {
        .s4-grid { grid-template-columns: 1fr; }
        
        .btn-desktop,
        .btn-dock {
          display: none !important;
        }
        
      }