* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  color: #fff;
}
.container {
  text-align: center;
  max-width: 360px;
  width: 100%;
}
.logo {
  width: 88px;
  height: 88px;
  border-radius: 20px;
  margin-bottom: 1.2rem;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
}
.title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.subtitle {
  font-size: 1rem;
  opacity: 0.9;
  margin-bottom: 2rem;
  min-height: 1.4rem;
}
.btn-primary,
.btn-secondary {
  display: block;
  width: 100%;
  padding: 14px 20px;
  border: none;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  margin-bottom: 12px;
  transition: opacity 0.2s, transform 0.1s;
  font-family: inherit;
}
.btn-primary {
  background: #fff;
  color: #764ba2;
}
.btn-secondary {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  backdrop-filter: blur(10px);
}
.btn-primary:active,
.btn-secondary:active { transform: scale(0.98); opacity: 0.85; }
.hint {
  margin-top: 1.5rem;
  font-size: 13px;
  opacity: 0.75;
  line-height: 1.5;
}
.wx-mask {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  z-index: 999;
  padding: 24px;
}
.wx-mask.show { display: block; }
.wx-arrow {
  position: absolute;
  top: 8px;
  right: 24px;
  font-size: 56px;
  color: #fff;
  animation: bounce 1s infinite;
}
.wx-text {
  position: absolute;
  top: 80px;
  right: 24px;
  color: #fff;
  font-size: 18px;
  line-height: 1.6;
  text-align: right;
}
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}