* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  min-height: 100%;
  background: #071b45;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  overflow-x: hidden;
}

.page {
  width: 100%;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  background: radial-gradient(circle at center top, #2d74d9 0%, #071b45 80%);
}

.stage {
  position: relative;
  width: min(100vw, 2048px);
  aspect-ratio: 2048 / 1365;
  overflow: hidden;
  box-shadow: 0 0 40px rgba(0, 0, 0, 0.35);
}

.bg {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  user-select: none;
  pointer-events: none;
}

.btns {
  position: absolute;
  left: 50%;
  bottom: 0.1%;
  transform: translateX(-50%);
  width: 74%;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.8%;
  z-index: 5;
}

.btn {
  display: block;
  cursor: pointer;
  transition: transform 0.18s ease, filter 0.18s ease;
}

.btn:hover {
  transform: translateY(-4px) scale(1.025);
  filter: brightness(1.1);
}

.btn:active {
  transform: translateY(1px) scale(0.98);
}

.btn img {
  display: block;
  width: 100%;
  height: auto;
}

.btn-app {
  width: 38.5%;
}

.btn-web {
  width: 32%;
}

.btn-service {
  width: 32%;
}

@media (max-width: 768px) {
  .stage {
    width: 100vw;
  }

  .btns {
    width: 92%;
    bottom: 1%;
    gap: 1%;
  }
}