html,
body,
#app {
    height: 100%;
    margin: 0;
    padding: 0;
}

.chromeframe {
    margin: 0.2em 0;
    background: #ccc;
    color: #000;
    padding: 0.2em 0;
}

/* ========== Loading 容器 ========== */
#loader-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 999999;
    background: #f8f8f8;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* ========== 中心旋转 loading ========== */
#loader {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 3px solid rgba(19, 193, 198, 0.2);
    border-top-color: #13c1c6;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ========== 加载完成：整体淡出 ========== */
.loaded #loader-wrapper {
    opacity: 0;
    visibility: hidden;
    -webkit-transition: opacity 0.3s ease-out, visibility 0.3s ease-out;
    transition: opacity 0.3s ease-out, visibility 0.3s ease-out;
}

.no-js #loader-wrapper { display: none; }

/* ========== 底部文字 ========== */
#loader-wrapper .load_title {
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
    color: #8d8d8d;
    font-size: 14px;
    line-height: 20px;
    margin-top: 16px;
    text-align: center;
}