* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: #ffffff;
  color: #111111;
  font-family: Arial, Helvetica, sans-serif;
}

body {
  min-height: 100vh;
}

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 70px 20px 80px;
  text-align: center;
}

.logo {
  width: 180px;
  max-width: 60vw;
  display: block;
  margin: 0 auto 20px;
  cursor: pointer;
  transition: transform 0.15s ease;
}

.logo:active {
  transform: scale(0.98);
}

.easter-message {
  min-height: 28px;
  margin-bottom: 10px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 2px;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.easter-message.show {
  opacity: 1;
}

h1 {
  margin: 0;
  font-size: 60px;
  letter-spacing: 4px;
  font-weight: 700;
}

.subtitle {
  margin-top: 12px;
  font-size: 18px;
  color: #555555;
}

.slogan {
  margin-top: 34px;
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 2px;
}

.buttons {
  margin-top: 40px;
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.small-buttons {
  margin-top: 24px;
}

.button {
  display: inline-block;
  padding: 12px 22px;
  border: 1px solid #111111;
  text-decoration: none;
  font-weight: 700;
  color: #ffffff;
  background: #111111;
  letter-spacing: 1px;
}

.button:hover {
  opacity: 0.92;
}

.button.alt {
  background: #ffffff;
  color: #111111;
}

.section {
  margin-top: 64px;
}

.section h3 {
  margin: 0 0 24px;
  font-size: 18px;
  letter-spacing: 1px;
}

.section p {
  margin: 18px 0;
  line-height: 1.6;
  font-size: 17px;
}

.ca-row {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.ca {
  display: inline-block;
  padding: 14px 18px;
  background: #f4f4f4;
  font-size: 16px;
  word-break: break-all;
}

.copy-btn {
  padding: 14px 18px;
  border: 1px solid #111111;
  background: #ffffff;
  color: #111111;
  font-weight: 700;
  cursor: pointer;
}

.copy-btn:hover {
  background: #f8f8f8;
}

.small {
  color: #666666;
  font-size: 14px;
}

.links {
  margin-top: 54px;
}

.links a {
  color: #111111;
  text-decoration: none;
  margin: 0 14px;
  font-size: 15px;
  font-weight: 700;
}

.footer {
  margin-top: 70px;
  font-size: 14px;
  color: #666666;
}

@media (max-width: 640px) {
  .container {
    padding: 50px 16px 70px;
  }

  .logo {
    width: 150px;
  }

  h1 {
    font-size: 42px;
  }

  .subtitle {
    font-size: 16px;
  }

  .slogan {
    font-size: 22px;
    line-height: 1.3;
  }

  .section p {
    font-size: 16px;
  }

  .links a {
    display: inline-block;
    margin: 8px 10px;
  }

  .easter-message {
    font-size: 18px;
  }
  }