* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
}

.nav {
  position: sticky;
  top: 0; left: 0; right: 0;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0px 1px 20px rgba(0, 0, 0, 0.07);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  z-index: 1000;
}
.nav-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.5rem 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.nav-app {
  color: #000;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-app img {
  width: 40px;
  height: 40px;
}
.nav-app p {
  font-size: 1.2rem;
  font-weight: 600;
}

.testflight-button {
  background: #F7F7F7F7;
  color: #000;
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  transition: background-color 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  border-style: solid;
  border-radius: 15px;
  border-width: 0.95px;
  border-color: rgb(0 0 0 / 6%);
}
.testflight-button:hover {
  background: #F0F0F0F0;
}
.testflight-button .icon {
  width: 40px;
  height: 40px;
}
.testflight-button .text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.2;
}
.testflight-button .text small {
  font-size: 0.7rem;
}
.testflight-button .text strong {
  font-size: 1rem;
  font-weight: 600;
}

.appstore-button img {
  height: 55px;
  vertical-align: middle;
  object-fit: contain;
}

@media (max-width: 968px) {
  .nav-content {
    padding: 0.5rem 1.5rem;
  }
}