/* 7 Pillars of Difference Grid */
    .diff-pillars-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
      margin-top: 48px;
    }

    .diff-pillar-card {
      background: #ffffff;
      border: 1px solid var(--color-border);
      border-radius: 18px;
      padding: 26px 22px;
      display: flex;
      flex-direction: column;
    }

    .diff-pillar-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-hover-shadow);
      border-color: rgba(37, 99, 235, 0.3);
    }

    .diff-num {
      width: 34px;
      height: 34px;
      border-radius: 8px;
      background: rgba(37, 99, 235, 0.08);
      color: var(--color-accent);
      font-weight: 800;
      font-size: 0.9rem;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 14px;
    }

    .diff-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--color-text);
      margin-bottom: 8px;
    }

    .diff-desc {
      font-size: 0.88rem;
      color: var(--color-text-secondary);
      line-height: 1.55;
    }