.hero-section {
      padding: 6rem 0 4rem;
      background: var(--gradient-dark);
      position: relative;
      overflow: hidden;
    }

    .hero-section::before {
      content: '';
      position: absolute;
      top: -5%;
      right: -5%;
      width: 500px;
      height: 500px;
      background: radial-gradient(circle, rgba(255, 51, 102, 0.15) 0%, transparent 70%);
      border-radius: 50%;
      animation: pulse 8s ease-in-out infinite;
    }

    .hero-section::after {
      content: '';
      position: absolute;
      bottom: -5%;
      left: -5%;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(0, 255, 209, 0.1) 0%, transparent 70%);
      border-radius: 50%;
      animation: pulse 6s ease-in-out infinite reverse;
    }

    @keyframes pulse {
      0%, 100% {
        transform: scale(1);
        opacity: 1;
      }
      50% {
        transform: scale(1.2);
        opacity: 0.7;
      }
    }

    .hero-section .container {
      position: relative;
      z-index: 1;
    }

    .hero-section h1 {
      margin-bottom: 2rem;
    }

    .hero-section p {
      font-size: clamp(16px, 2vw, 20px);
      line-height: 1.8;
      max-width: 900px;
      margin-bottom: 2rem;
    }

    .hero-section .btn-primary {
      margin-top: 1rem;
    }

    .contents-section {
      padding: 4rem 0;
      background: var(--dark-blue);
    }

    .contents-nav {
      background: var(--dark);
      border-radius: var(--border-radius);
      padding: 2rem;
      box-shadow: var(--shadow-md);
    }

    .contents-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 1rem;
    }

    .contents-list li {
      position: relative;
      padding-left: 1.5rem;
    }

    .contents-list li::before {
      content: '→';
      position: absolute;
      left: 0;
      color: var(--primary);
      font-weight: 700;
    }

    .contents-list a {
      color: var(--text);
      font-weight: 600;
      transition: var(--transition);
      display: block;
      padding: 0.5rem 0;
    }

    .contents-list a:hover {
      color: var(--accent);
      padding-left: 10px;
    }

    .registration {
      padding: 5rem 0;
      background: var(--gradient-dark);
    }

    .timeline-item {
      background: var(--dark-blue);
      border-radius: var(--border-radius);
      padding: 2.5rem;
      margin-bottom: 2rem;
      box-shadow: var(--shadow-md);
      border-left: 4px solid var(--primary);
      transition: var(--transition);
      position: relative;
    }

    .timeline-item::before {
      content: '';
      position: absolute;
      left: -12px;
      top: 2.5rem;
      width: 20px;
      height: 20px;
      background: var(--primary);
      border-radius: 50%;
      box-shadow: 0 0 0 4px var(--dark-blue);
    }

    .timeline-item:hover {
      transform: translateX(8px);
      box-shadow: var(--shadow-lg);
    }

    .mobile-app {
      padding: 5rem 0;
      background: var(--dark);
    }

    .feature-block {
      background: var(--dark-blue);
      border-radius: var(--border-radius);
      padding: 2.5rem;
      margin-bottom: 2rem;
      box-shadow: var(--shadow-md);
      border: 1px solid rgba(255, 255, 255, 0.1);
      transition: var(--transition);
    }

    .feature-block:hover {
      border-color: var(--accent);
      box-shadow: 0 8px 32px rgba(0, 255, 209, 0.2);
    }

    .games {
      padding: 5rem 0;
      background: var(--gradient-dark);
      position: relative;
      overflow: hidden;
    }

    .tab-content {
      margin-bottom: 3rem;
    }

    .cards-grid {
      display: grid;
      gap: 2rem;
      margin: 3rem 0;
    }

    .cards-grid-3 {
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }

    .cards-grid-4 {
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }

    .advantages {
      padding: 5rem 0;
      background: var(--dark);
    }

    .support {
      padding: 5rem 0;
      background: var(--dark-blue);
    }

    .highlight-box {
      background: linear-gradient(135deg, rgba(255, 51, 102, 0.1) 0%, rgba(108, 58, 255, 0.1) 100%);
      border-radius: var(--border-radius);
      padding: 2rem;
      margin-bottom: 2rem;
      border-left: 4px solid var(--accent);
      box-shadow: var(--shadow-md);
      transition: var(--transition);
    }

    .highlight-box:hover {
      transform: translateX(8px);
      border-left-width: 8px;
    }

    .security {
      padding: 5rem 0;
      background: var(--gradient-dark);
    }

    .faq {
      padding: 5rem 0;
      background: var(--dark);
    }

    .accordion-item {
      background: var(--dark-blue);
      border-radius: var(--border-radius);
      margin-bottom: 1rem;
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid rgba(255, 255, 255, 0.1);
      transition: var(--transition);
    }

    .accordion-item:hover {
      border-color: var(--primary);
    }

    .accordion-header {
      padding: 1.5rem 2rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 20px;
      color: #fff;
      transition: var(--transition);
      position: relative;
    }

    .accordion-header::after {
      content: '+';
      font-size: 28px;
      color: var(--accent);
      transition: var(--transition);
      font-weight: 300;
    }

    .accordion-header:hover {
      background: rgba(255, 51, 102, 0.1);
    }

    .accordion-item.active .accordion-header::after {
      content: '−';
    }

    .accordion-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
      padding: 0 2rem;
    }

    .accordion-item.active .accordion-body {
      max-height: 1000px;
      padding: 0 2rem 1.5rem;
    }

    .cta-section {
      padding: 6rem 0;
      background: var(--gradient-primary);
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .cta-section::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><rect width="100" height="100" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="2"/></svg>') repeat;
      opacity: 0.3;
    }

    .cta-section .container {
      position: relative;
      z-index: 1;
    }

    .cta-section h2 {
      color: #fff;
      margin-bottom: 1.5rem;
    }

    .cta-section h2::after {
      display: none;
    }

    .cta-section p {
      font-size: 20px;
      margin-bottom: 2rem;
      color: rgba(255, 255, 255, 0.95);
    }

    .cta-section .btn-primary {
      background: #fff;
      color: var(--primary);
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    }

    .cta-section .btn-primary:hover {
      background: var(--accent);
      color: var(--dark);
    }

    @media (max-width: 767px) {
      .hero-section {
        padding: 4rem 0 3rem;
      }

      .hero-section::before,
      .hero-section::after {
        width: 300px;
        height: 300px;
      }

      .contents-list {
        grid-template-columns: 1fr;
      }

      .cards-grid-3,
      .cards-grid-4 {
        grid-template-columns: 1fr;
      }

      .timeline-item,
      .feature-block,
      .highlight-box {
        padding: 1.5rem;
      }

      .accordion-header {
        padding: 1rem 1.5rem;
        font-size: 18px;
      }

      .accordion-body {
        padding: 0 1.5rem;
      }

      .accordion-item.active .accordion-body {
        padding: 0 1.5rem 1rem;
      }

      .card {
        padding: 1.5rem;
      }

      h2::after {
        width: 60px;
      }

      .registration,
      .mobile-app,
      .games,
      .advantages,
      .support,
      .security,
      .faq {
        padding: 3rem 0;
      }

      .cta-section {
        padding: 4rem 0;
      }
    }

    @media (min-width: 768px) and (max-width: 1023px) {
      .cards-grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }

      .cards-grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (min-width: 1440px) {
      .container {
        max-width: 1400px;
      }

      .cards-grid-4 {
        grid-template-columns: repeat(4, 1fr);
      }
    }