fill: white;
    }
    .video-duration {
      position: absolute;
      bottom: 8px;
      right: 8px;
      background: rgba(0,0,0,0.75);
      color: white;
      font-size: 11px;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: 4px;
      backdrop-filter: blur(4px);
    }
    .video-info-modal {
      padding: 12px 16px 16px;
    }
    .video-tag {
      display: inline-block;
      padding: 2px 8px;
      background: var(--color-gray-100);
      color: var(--color-gray-600);
      font-size: 11px;
      font-weight: 600;
      border-radius: var(--radius-full);
      margin-bottom: 6px;
    }
    .video-info-modal h4 {
      font-size: var(--text-sm);
      font-weight: 700;
      color: var(--color-gray-900);
      margin: 0;
      line-height: 1.3;
    }

    /* ======== TAB UPGRADE ======== */
    .case-tabs {
      display: flex;
      gap: 0;
      margin: 0;
      padding: 0;
      background: var(--color-white);
      border-radius: 14px 14px 0 0;
      box-shadow: 0 -2px 16px rgba(0,0,0,0.04);
      overflow: hidden;
    }
    .case-tab-btn {
      flex: 1;
      padding: 16px 24px;
      background: none;
      border: none;
      border-bottom: 3px solid transparent;
      font-size: var(--text-sm);
      font-weight: 700;
      color: var(--color-gray-400);
      cursor: pointer;
      transition: all 0.25s;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      position: relative;
    }
    .case-tab-btn::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0;
      height: 3px;
      background: linear-gradient(90deg, #38bdf8, #facc15);
      transform: scaleX(0);
      transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .case-tab-btn.active {
      color: var(--color-primary);
    }
    .case-tab-btn.active::before {
      transform: scaleX(1);
    }
    .case-tab-btn:hover:not(.active) {
      color: var(--color-gray-600);
      background: var(--color-gray-50);
    }
    .case-tab-icon {
      width: 20px;
      height: 20px;
      transition: transform 0.3s;
    }
    .case-tab-btn.active .case-tab-icon {
      transform: scale(1.1);
    }


    /* ======== CTA UPGRADE ======== */
    .cta-section {
      padding: 80px 0;
    }
    .cta-box {
      background: linear-gradient(135deg, var(--color-primary-900) 0%, var(--color-primary-700) 60%, #0d1f33 100%);
      color: var(--color-white);
      border-radius: 20px;
      padding: 64px 48px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }
    .cta-box::before {
      content: '';
      position: absolute;
      top: -60%; left: -20%;
      width: 140%;
      height: 200%;
      background: radial-gradient(ellipse 50% 50% at 30% 50%, rgba(56,189,248,0.08) 0%, transparent 70%);
      pointer-events: none;
    }
    .cta-box h2 {
      color: var(--color-white);
      font-size: clamp(1.5rem, 3vw, 2.25rem);
      margin-bottom: var(--space-4);
      position: relative;
    }
    .cta-box p {
      color: rgba(255,255,255,0.82);
      font-size: var(--text-lg);
      margin-bottom: var(--space-8);
      position: relative;
    }
    .cta-box .btn {
      position: relative;
    }


    /* ======== RESPONSIVE ======== */
    @media (max-width: 1023px) {
      .sample-grid-enhanced { grid-template-columns: repeat(3, 1fr); }
      .video-grid-enhanced  { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 640px) {
      .sample-grid-enhanced { grid-template-columns: repeat(2, 1fr); }
      .video-grid-enhanced  { grid-template-columns: 1fr; }
      .case-hero-stats { gap: 24px; }
      .case-stat-num { font-size: 1.75rem; }
      .filter-row { flex-direction: column; align-items: flex-start; gap: 8px; }
      .cta-box { padding: 40px 24px; }
    }

    /* Reveal animations handled globally by reveal.css */