.pvt {
    --pvt-bg: #f8fafc;
    --pvt-surface: #fff;
    --pvt-primary: #3b82f6;
    --pvt-accent: #f59e0b;
    --pvt-success: #10b981;
    --pvt-danger: #ef4444;
    --pvt-text: #0f172a;
    --pvt-muted: #94a3b8;
    --pvt-surface-2: #f1f5f9;
    --pvt-border: rgba(0, 0, 0, 0.06);
    --pvt-shadow: 0 40px 100px -20px rgba(0, 0, 0, 0.06);

    display: flex;
    flex-direction: column;
    gap: 2rem;
    padding: 4rem;
    max-width: 1200px;
    margin: 0 auto;
    background: var(--pvt-surface);
    border-radius: 48px;
    box-shadow: var(--pvt-shadow);
    border: 1px solid var(--pvt-border);
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: background 0.3s ease, color 0.3s ease;
  }

  
  .pvt__view {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
  }

  .pvt__view--hidden {
    display: none;
  }

  .pvt__view--game {
    gap: 2rem;
  }

  .pvt__view--result {
    animation: pvt-slide-in 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  }

  @keyframes pvt-slide-in {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
  }

  
  .pvt__intro-title {
    font-size: 3rem;
    font-weight: 950;
    color: var(--pvt-text);
    margin: 0;
    line-height: 1.1;
  }

  .pvt__intro-desc {
    color: var(--pvt-muted);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
    font-size: 1.1rem;
  }

  
  .pvt__benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    width: 100%;
    margin: 1rem 0;
  }

  .pvt__benefit {
    background: var(--pvt-surface-2);
    padding: 2rem;
    border-radius: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    border: 1px solid var(--pvt-border);
    transition: transform 0.3s ease;
  }

  .pvt__benefit:hover {
    transform: translateY(-4px);
  }

  .pvt__benefit-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    line-height: 1;
  }

  .pvt__benefit--blue .pvt__benefit-icon {
    background: rgba(59, 130, 246, 0.1);
    color: var(--pvt-primary);
  }

  .pvt__benefit--green .pvt__benefit-icon {
    background: rgba(16, 185, 129, 0.1);
    color: var(--pvt-success);
  }

  .pvt__benefit--amber .pvt__benefit-icon {
    background: rgba(245, 158, 11, 0.1);
    color: var(--pvt-accent);
  }

  .pvt__benefit-title {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--pvt-text);
  }

  .pvt__benefit-desc {
    font-size: 0.9rem;
    color: var(--pvt-muted);
    line-height: 1.5;
    margin: 0;
  }

  
  .pvt__btn {
    background: var(--pvt-primary);
    color: #fff;
    border: none;
    padding: 1.5rem 3.5rem;
    font-size: 1.3rem;
    font-weight: 900;
    border-radius: 24px;
    cursor: pointer;
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.2);
    transition: all 0.2s ease;
  }

  .pvt__btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 30px 60px rgba(59, 130, 246, 0.3);
  }

  
  .pvt__hud {
    display: flex;
    justify-content: space-around;
    gap: 1.5rem;
    width: 100%;
  }

  .pvt__hud--result {
    justify-content: center;
  }

  .pvt__hud-stat {
    background: var(--pvt-surface-2);
    padding: 1.5rem;
    border-radius: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
  }

  .pvt__stat-val {
    font-size: 2.5rem;
    font-weight: 950;
    color: var(--pvt-text);
    line-height: 1;
  }

  .pvt__stat-lbl {
    font-size: 0.7rem;
    font-weight: 800;
    color: var(--pvt-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
  }

  
  .pvt__viewport {
    position: relative;
    width: 100%;
    height: 580px;
    background: var(--pvt-bg);
    border-radius: 40px;
    overflow: hidden;
    cursor: none;
    border: 4px solid var(--pvt-surface-2);
    box-shadow: inset 0 0 50px rgba(0, 0, 0, 0.02);
  }

  .pvt__center-anchor {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    background: var(--pvt-accent);
    border-radius: 50%;
    box-shadow: 0 0 30px rgba(245, 158, 11, 0.4);
    z-index: 10;
  }

  .pvt__focus-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    border: 4px solid var(--pvt-accent);
    opacity: 0.15;
    border-radius: 50%;
    animation: pvt-pulse 2s ease-out infinite;
    pointer-events: none;
  }

  @keyframes pvt-pulse {
    0% { transform: translate(-50%, -50%) scale(1); opacity: 0.3; }
    100% { transform: translate(-50%, -50%) scale(3); opacity: 0; }
  }

  .pvt__target {
    position: absolute;
    width: 45px;
    height: 45px;
    left: -9999px;
    top: -9999px;
    background: var(--pvt-text);
    color: var(--pvt-surface);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 950;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
    transform: translate(-50%, -50%);
    transition: background 0.1s ease;
  }

  .pvt .pvt__target--wrong {
    background: var(--pvt-danger);
    color: #fff;
    animation: pvt-shake 0.4s ease;
  }

  .pvt .pvt__target--correct {
    background: var(--pvt-success);
    color: #fff;
    animation: pvt-pop 0.3s ease;
  }

  @keyframes pvt-shake {
    0%, 100% { transform: translate(-50%, -50%) translateX(0); }
    25% { transform: translate(-50%, -50%) translateX(-10px); }
    75% { transform: translate(-50%, -50%) translateX(10px); }
  }

  @keyframes pvt-pop {
    0% { transform: translate(-50%, -50%) scale(0.8); }
    50% { transform: translate(-50%, -50%) scale(1.2); }
    100% { transform: translate(-50%, -50%) scale(1); }
  }

  
  .pvt__rank-title {
    font-size: 3.5rem;
    font-weight: 950;
    color: var(--pvt-text);
    margin: 0;
  }

  .pvt__rank-text {
    color: var(--pvt-muted);
    font-size: 1.2rem;
    max-width: 500px;
    margin: 0 auto;
    line-height: 1.6;
  }

  
  .pvt__method {
    background: var(--pvt-surface-2);
    border-radius: 16px;
    padding: 1rem 1.5rem;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--pvt-muted);
    letter-spacing: 0.03em;
    line-height: 1.5;
  }

  
  .pvt__mobile {
    display: none;
  }

  
  .theme-dark .pvt {
    --pvt-bg: #0f172a;
    --pvt-surface: #1e293b;
    --pvt-primary: #60a5fa;
    --pvt-accent: #fbbf24;
    --pvt-success: #34d399;
    --pvt-danger: #f87171;
    --pvt-text: #f8fafc;
    --pvt-muted: #94a3b8;
    --pvt-surface-2: #334155;
    --pvt-border: rgba(255, 255, 255, 0.06);
    --pvt-shadow: 0 40px 100px -20px rgba(0, 0, 0, 0.5);
  }

  
  @media (max-width: 1024px) {
    .pvt {
      padding: 2rem 1.5rem;
      gap: 1.5rem;
    }

    #pvt-intro,
    #pvt-game,
    #pvt-result,
    .pvt__method {
      display: none;
    }

    .pvt__mobile {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      text-align: center;
      gap: 1.5rem;
      padding: 2rem 1rem;
      background: var(--pvt-surface-2);
      border-radius: 24px;
      border: 1px dashed var(--pvt-border);
    }

    .pvt__mobile-icon {
      font-size: 4rem;
      background: rgba(245, 158, 11, 0.1);
      width: 100px;
      height: 100px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .pvt__mobile-title {
      font-size: 1.75rem;
      font-weight: 900;
      color: var(--pvt-text);
      margin: 0;
    }

    .pvt__mobile-desc {
      font-size: 1rem;
      line-height: 1.6;
      color: var(--pvt-muted);
      max-width: 320px;
      margin: 0;
    }

    .pvt__mobile-tip {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 0.75rem;
      background: var(--pvt-bg);
      padding: 1.25rem 1.5rem;
      border-radius: 16px;
      font-size: 0.95rem;
      color: var(--pvt-text);
      font-weight: 600;
      border: 1px solid var(--pvt-border);
    }

    .pvt__mobile-tip span:first-child {
      font-size: 2.5rem;
    }
  }