page { background: #000; color: #fff; }
.page { min-height: 100vh; }
.nav-placeholder { width: 100%; }
.header { display: flex; align-items: center; padding: 24rpx 32rpx; border-bottom: 2rpx solid rgba(255,255,255,0.05); }
.nav-back { font-size: 32rpx; color: #00CED1; margin-right: 24rpx; }
.header-title { flex: 1; text-align: center; font-size: 34rpx; color: #00CED1; }
.placeholder-body { padding: 48rpx; text-align: center; color: rgba(255,255,255,0.4); font-size: 28rpx; }
.container { padding: 32rpx; }