.achievements-grid {
      display: grid;
      gap: 12px;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      margin-top: 24px;
    }

    .achievement-item {
      position: relative;
      transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
    }

    .achievement-item:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 40px rgba(122, 252, 255, 0.2);
    }

    .achievement-item[data-state="unlocked"] {
      border-color: rgba(122, 252, 255, 0.6);
      box-shadow: 0 12px 30px rgba(122, 252, 255, 0.15);
      transform: translateY(-2px);
    }

    .achievement-item[data-state="unlocked"]:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 40px rgba(122, 252, 255, 0.2);
    }


    .achievement-status {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-weight: 600;
      font-size: 14px;
      color: var(--muted);
      margin-top: 12px;
    }

    .achievement-status::before {
      content: "";
      width: 20px;
      height: 20px;
      flex-shrink: 0;
      background-repeat: no-repeat;
      background-size: contain;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Crect x='5' y='11' width='14' height='10' rx='2' fill='currentColor'/%3E%3Cpath d='M8 11V8a4 4 0 018 0v3' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' fill='none'/%3E%3Ccircle cx='12' cy='16' r='2' fill='currentColor'/%3E%3C/svg%3E");
    }

    .achievement-status[data-state="unlocked"] {
      color: #7afcff;
    }

    .achievement-status[data-state="unlocked"]::before {
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Ccircle cx='12' cy='9' r='6' fill='%23f9c74f'/%3E%3Cpath d='M9 12.5L7.5 22l4.5-2 4.5 2L15 12.5' fill='%23f4845f'/%3E%3Ccircle cx='12' cy='9' r='3' fill='%23fff3bf'/%3E%3C/svg%3E");
    }

    body[data-theme="light"] .achievement-status[data-state="unlocked"] {
      color: #006e82;
    }

    @media (max-width: 600px) {
      .hero-content {
        grid-template-columns: minmax(0, 1fr);
        justify-items: stretch;
      }

      .hero-content > .intro,
      .hero-content > .card {
        width: 100%;
        justify-self: stretch;
      }
      h1 {
        font-size: 2rem; 
      }
    }