/* 加载动画容器：Vue 挂载后随内容一起被替换，样式不会残留 */
body,#app{
    overflow: hidden;
}
#app > .loading {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: #1677ff;
}

/* 旋转圆环 */
#app > .loading > .loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #d6e4ff;
    border-top-color: #1677ff;
    border-radius: 50%;
    animation: spin 2s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 三点依次闪烁的打点动画 */
#app > .loading > .loading-text {
    font-size: 14px;
    letter-spacing: 2px;
}

#app > .loading > .loading-text .dot {
    animation: blink 1.4s ease-in-out infinite;
}

#app > .loading > .loading-text .dot:nth-child(2) {
    animation-delay: 0.2s;
}

#app > .loading > .loading-text .dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes blink {
    0%, 80%, 100% { opacity: 0; }
    40% { opacity: 1; }
}