body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: linear-gradient(135deg, #e3f2fd, #b3e5fc);
  color: #333;
  overflow: hidden;
}

.container {
  max-width: 400px;
  width: 90%;
  padding: 20px;
  background: rgba(255, 255, 255, 0.98);
  border-radius: 16px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  text-align: center;
  animation: slide-up 0.8s ease-out;
}

header h1 {
  font-size: 28px;
  color: #1565c0;
  margin-bottom: 8px;
}

.subtitle {
  font-size: 16px;
  color: #555;
  margin-bottom: 20px;
}

.trust-badges {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.badge {
  background: #e3f2fd;
  color: #1565c0;
  padding: 6px 12px;
  margin: 5px;
  border-radius: 20px;
  font-size: 12px;
  display: flex;
  align-items: center;
}

.status {
  font-size: 14px;
  color: #444;
  margin-bottom: 12px;
}

.assurance {
  font-size: 14px;
  color: #2e7d32;
  margin-bottom: 25px;
}

.btn {
  display: block;
  width: 100%;
  max-width: 350px;
  padding: 20px;
  margin: 15px auto;
  font-size: 18px;
  font-weight: bold;
  color: #fff;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
}

.btn-primary { background: #1976d2; }
.btn-secondary { background: #2e7d32; }

.btn:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.25);
}

.pulse {
  animation: pulse 1.8s infinite;
}

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.95);
  display: none;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  z-index: 1000;
}

.loading-bar {
  width: 80%;
  max-width: 350px;
  height: 8px;
  background: #1976d2;
  border-radius: 6px;
  animation: loading 1s ease-in-out infinite;
}

.loading-overlay p {
  margin-top: 15px;
  color: #333;
  font-size: 16px;
}

/* 动画效果 */
@keyframes slide-up {
  from { transform: translateY(60px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.04); }
  100% { transform: scale(1); }
}

@keyframes loading {
  0% { transform: scaleX(0); transform-origin: left; }
  50% { transform: scaleX(1); }
  100% { transform: scaleX(0); transform-origin: right; }
}

.fade-in {
  animation: fade-in 1.2s ease-in;
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* 手机适配 */
@media (max-width: 600px) {
  .container { width: 95%; padding: 15px; }
  h1 { font-size: 24px; }
  .btn { font-size: 16px; padding: 18px; max-width: 320px; }
  .subtitle, .status, .assurance { font-size: 13px; }
  .badge { font-size: 11px; padding: 5px 10px; }
}