:root {
      --primary: #58cc02; /* Brilliant-style green */
       --font-main: 'Open AI Sans',  sans-serif;
    }

    body {
      margin: 0;
      font-family: var(--font-main);
      background: #f3f3f3;
      color: #1d1d1d;
      letter-spacing: 0.3px;   /* 살짝 넓게 */
      line-height: 1.4;      /* 1.4~1.8 사이 추천 */
      -webkit-tap-highlight-color: transparent;
      -webkit-touch-callout: none;
  }


  .start-button {
  will-change: transform;
  backface-visibility: hidden;
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
}
    

    .container {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      min-height: 100vh;
      padding: 20px 24px;
      box-sizing: border-box;
      text-align: center;
      max-width: 640px;
      margin: 0 auto; 
   
    }


    .start-button:focus {
  outline: none;
  box-shadow: none;
}



.footer {
  background-color: #f9fafb;  /* 아주 연한 회색 (or #f3f4f6) */
  padding: 24px 16px;
  text-align: center;
  font-size: 12px;
  color: #6b7280; /* 약간 어두운 회색 */
  border-top: 1px solid #e5e7eb;
  margin-top: 60px;
}

.footer a {
  color: #6b7280;
  text-decoration: none;
  margin: 0 6px;
}

.footer a:hover {
  text-decoration: underline;
}


.logo {
  display: block;
  margin-left: 0;
  width: 140px;    /* 원하는 크기 */
  height: auto;
}

@media (max-width: 640px) {
  .logo { width: 100px; }
}