body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans JP", sans-serif;
  background: #f7fafc;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
  color: #333;
}

.container {
  background: #ffffff;
  border-radius: 20px;
  padding: 40px 28px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.08);
  text-align: center;
  width: 320px;
  max-width: 90%;
}

h1 {
  font-size: 1.5rem;
  margin: 0.5rem 0 0.25rem;
}

p {
  font-size: 0.9rem;
  color: #555;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.btn {
  display: block;
  padding: 14px 0;
  margin: 12px 0;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  transition: all 0.15s ease;
  box-shadow: 0 4px 10px rgba(0,0,0,0.08);
}

.btn.store {
  background: #65AA91;
  color: #ffffff;
}
.btn.store:hover {
  background: #7fc4aa;
  transform: translateY(-2px);
}
.btn.store:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}
.btn.store:focus {
  outline: 3px solid rgba(101,170,145,0.25);
  outline-offset: 2px;
}

.app-icon {
  display: block;
  width: 96px;
  height: 96px;
  margin: 0 auto 18px;
  border-radius: 22%;
}

.company-name {
  font-size: 10px;
  color: #6b7280;
  text-align: center;
  margin-top: 24px;
  opacity: 0.8;
}