* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family:
    -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial,
    sans-serif;
}

body,
html {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #ffffff;
}

.container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 360px;
  padding: 20px;
  text-align: center;
}

.app-icon {
  width: 80px;
  height: 80px;
  background-color: #e5e5e5;
  border-radius: 16px;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 32px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.app-icon img {
  width: 48px;
  height: 48px;
  fill: #ffffff;
}

.title {
  font-size: 20px;
  font-weight: 500;
  color: #000000;
  margin-bottom: 2px;
}

.title.en {
  font-size: 12px;
  font-weight: 400;
  color: #666;
  margin-bottom: 24px;
}

.btn {
  height: 44px;
  max-width: 180px;
  width: 100%;
  min-width: 64px;
  background-color: #4285f4;
  color: #ffffff;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  text-decoration: none;
  transition: background-color 0.3s ease;
}

.btn:hover:not(.loading) {
  background-color: #3367d6;
}

.btn.loading {
  background-color: #ececec;
  cursor: not-allowed;
  pointer-events: none;
}

.spinner {
  width: 21px;
  height: 20px;
  animation: spin 1s linear infinite;
}

.none {
  display: none;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@media screen and (max-width: 360px) {
  .container {
    padding: 16px;
  }
}