.page-header {
      text-align: center;
      padding: 40px 0 60px;
      position: relative;
    }

    .page-header::before {
      content: '';
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      width: 600px;
      height: 300px;
      background: radial-gradient(ellipse, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
      filter: blur(40px);
      z-index: -1;
    }

    .page-header .page-subtitle {
      display: inline-block;
      padding: 4px 16px;
      border: 1px solid var(--border-color);
      border-radius: 20px;
      font-size: 12px;
      color: var(--neon-cyan);
      letter-spacing: 3px;
      text-transform: uppercase;
      margin-bottom: 16px;
    }

    .page-header h1 {
      font-size: 36px;
      font-weight: 800;
      letter-spacing: 2px;
      background: var(--gradient-1);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      margin-bottom: 12px;
    }

    .page-header p {
      color: var(--text-secondary);
      font-size: 15px;
      letter-spacing: 1px;
    }

    .changelog-container {
      max-width: 900px;
      margin: 0 auto;
    }

    .changelog-timeline {
      position: relative;
      padding-left: 40px;
    }

    .changelog-timeline::before {
      content: '';
      position: absolute;
      left: 12px;
      top: 0;
      bottom: 0;
      width: 2px;
      background: linear-gradient(180deg, var(--neon-cyan) 0%, rgba(0, 136, 255, 0.3) 50%, transparent 100%);
      box-shadow: 0 0 10px var(--neon-glow);
    }

    .changelog-item {
      position: relative;
      margin-bottom: 40px;
      animation: fadeInUp 0.5s ease forwards;
      opacity: 0;
    }

    .changelog-item:nth-child(1) { animation-delay: 0.1s; }
    .changelog-item:nth-child(2) { animation-delay: 0.2s; }
    .changelog-item:nth-child(3) { animation-delay: 0.3s; }
    .changelog-item:nth-child(4) { animation-delay: 0.4s; }
    .changelog-item:nth-child(5) { animation-delay: 0.5s; }
    .changelog-item:nth-child(6) { animation-delay: 0.6s; }

    .changelog-dot {
      position: absolute;
      left: -34px;
      top: 8px;
      width: 14px;
      height: 14px;
      border-radius: 50%;
      background: var(--bg-primary);
      border: 2px solid var(--neon-cyan);
      box-shadow: 0 0 12px var(--neon-glow-strong);
      z-index: 1;
    }

    .changelog-dot::after {
      content: '';
      position: absolute;
      top: 2px; right: 2px; bottom: 2px; left: 2px;
      border-radius: 50%;
      background: var(--neon-cyan);
      animation: pulse 2s ease-in-out infinite;
    }

    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.5; transform: scale(0.7); }
    }

    .changelog-card {
      background: var(--bg-card);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 28px 32px;
      transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
      position: relative;
      overflow: hidden;
    }

    .changelog-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 1px;
      background: linear-gradient(90deg, transparent, var(--border-glow), transparent);
      opacity: 0;
      transition: opacity 0.4s ease;
    }

    .changelog-card:hover {
      transform: translateX(8px);
      border-color: var(--border-glow);
      box-shadow: var(--shadow-glow-strong);
      background: var(--bg-card-hover);
    }

    .changelog-card:hover::before {
      opacity: 1;
    }

    .changelog-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 16px;
      flex-wrap: wrap;
      gap: 12px;
    }

    .changelog-version {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 24px;
      font-weight: 800;
      letter-spacing: 1px;
      background: var(--gradient-1);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .changelog-version-badge {
      display: inline-block;
      padding: 2px 10px;
      border-radius: 4px;
      background: rgba(0, 240, 255, 0.1);
      border: 1px solid var(--border-color);
      font-size: 11px;
      color: var(--neon-cyan);
      letter-spacing: 1px;
      font-weight: 600;
    }

    .changelog-date {
      display: flex;
      align-items: center;
      gap: 6px;
      color: var(--text-muted);
      font-size: 14px;
    }

    .changelog-date svg {
      width: 14px;
      height: 14px;
    }

    .changelog-content {
      color: var(--text-secondary);
      font-size: 15px;
      line-height: 2;
    }

    .changelog-content::before {
      content: '';
      display: block;
      width: 30px;
      height: 2px;
      background: var(--gradient-1);
      border-radius: 2px;
      margin-bottom: 16px;
      box-shadow: 0 0 8px var(--neon-glow);
    }

    .empty-state {
      text-align: center;
      padding: 80px 20px;
      color: var(--text-muted);
    }

    .empty-state svg {
      width: 64px;
      height: 64px;
      margin-bottom: 20px;
      opacity: 0.3;
    }

    .empty-state p {
      font-size: 16px;
    }

    @media (max-width: 768px) {
      .page-header h1 {
        font-size: 32px;
      }

      .changelog-timeline {
        padding-left: 30px;
      }

      .changelog-timeline::before {
        left: 8px;
      }

      .changelog-dot {
        left: -28px;
      }

      .changelog-card {
        padding: 20px;
      }

      .changelog-version {
        font-size: 20px;
      }

      .changelog-header {
        flex-direction: column;
        align-items: flex-start;
      }
    }