* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #f1f1f1;
  color: #000;
  font-family: Arial, sans-serif;
}

.content-box {
  position: relative;
  flex: 0 0 auto;
  width: 545.49px;
  height: 473.67px;
  margin: 0 17.1px 66.69px;
  border-radius: 20.52px;
  background: #fff;
  text-align: center;
  box-shadow: 0 10.26px 31.635px rgba(0, 0, 0, .1);
}

.logo {
  position: absolute;
  top: 64.98px;
  left: 50%;
  width: 210.33px;
  height: auto;
  transform: translateX(-50%);
}

#age-question {
  position: absolute;
  top: 162.45px;
  left: 0;
  width: 100%;
  margin: 0;
  color: #00aff0;
  font-size: 37.62px;
  line-height: 45.315px;
  font-weight: 700;
  letter-spacing: 1.0516px;
  text-transform: uppercase;
}

#age-info {
  position: absolute;
  top: 239.4px;
  left: 0;
  width: 100%;
  margin: 0;
  color: #666;
  font-size: 20.52px;
  line-height: 33.345px;
}

#enter-button {
  position: absolute;
  top: 347.13px;
  left: 50%;
  transform: translateX(-50%);
  width: 388.17px;
  height: 64.98px;
  padding: 0;
  border: 0;
  border-radius: 42.75px;
  background: #00aff0;
  color: #fff;
  font-family: Arial, sans-serif;
  font-size: 23.085px;
  font-weight: 700;
  letter-spacing: 1.0516px;
  text-transform: uppercase;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color .3s ease, box-shadow .3s ease;
}

#enter-button:hover {
  background: #0095d0;
  box-shadow: 0 5.13px 15.39px rgba(0, 175, 240, .3);
}

#enter-button:focus-visible {
  outline: 2.565px solid #0076a3;
  outline-offset: 4.275px;
}

@media (max-width: 700px) {
  .content-box {
    width: calc(100% - 32px);
    height: auto;
    margin: 24px 16px 60px;
    padding: 42px 24px;
  }
  .logo {
    position: static;
    display: block;
    width: 200px;
    margin: 0 auto 40px;
    transform: none;
  }
  #age-question, #age-info, #enter-button {
    position: static;
    width: auto;
    transform: none;
  }
  #age-question { margin-bottom: 30px; font-size: 30px; line-height: 1.2; }
  #age-info { margin-bottom: 40px; font-size: 17px; line-height: 1.6; }
  #enter-button { max-width: 100%; height: auto; padding: 18px 24px; font-size: 18px; white-space: normal; }
}

@media (prefers-reduced-motion: reduce) {
  #enter-button { transition: none; }
}