:root {
  --text: #111b21;
  --green: #64d477;
  --green-border: #2f8d51;
  --link-green: #1fa855;
  --button-border: #6f777d;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-width: 320px;
  min-height: 100%;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--text);
  font-family:
    Arial,
    "Microsoft YaHei",
    "PingFang SC",
    sans-serif;
  line-height: 1.4;
}

a {
  color: inherit;
  text-decoration: none;
}

.launcher {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  width: 100%;
  min-height: 100vh;
  padding: 0 20px;
  text-align: center;
}

.actions {
  display: flex;
  align-items: center;
  flex-direction: column;
  gap: 14px;
  margin-top: 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 314px;
  height: 61px;
  border-radius: 31px;
  font-size: 23px;
  font-weight: 700;
  letter-spacing: 0;
}

.button-primary {
  border: 2px solid var(--green-border);
  background: var(--green);
  color: var(--text);
}

.button-secondary {
  border: 1.5px solid var(--button-border);
  background: var(--white);
  color: var(--text);
}

.download-prompt {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin: 40px 0 0;
  color: var(--text);
  font-size: 24px;
  font-weight: 400;
  line-height: 32px;
}

.whatsapp-icon {
  display: inline-grid;
  width: 30px;
  height: 30px;
  flex: 0 0 30px;
  place-items: center;
}

.whatsapp-icon svg {
  width: 30px;
  height: 30px;
  fill: var(--green);
}

.whatsapp-icon .phone {
  fill: var(--white);
}

.download-prompt a {
  color: var(--text);
  font-size: 20px;
  font-weight: 700;
  line-height: 28px;
  text-decoration: underline;
  text-decoration-color: var(--link-green);
  text-decoration-thickness: 3px;
  text-underline-offset: 4px;
}

@media (max-width: 520px) {
  .launcher {
    min-height: 100vh;
    padding: 0 18px;
  }

  .actions {
    margin-top: 0;
  }

  .button {
    width: min(314px, 100%);
    height: 56px;
    font-size: 19px;
  }

  .download-prompt {
    flex-wrap: wrap;
    gap: 9px;
    margin-top: 34px;
    font-size: 20px;
  }
}