html {
    font-size: 14px;
}

@media (min-width: 768px) {
    html {
        font-size: 16px;
    }
}

.btn:focus,
.btn:active:focus,
.btn-link.nav-link:focus,
.form-control:focus,
.form-check-input:focus {
    box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
    position: relative;
    min-height: 100%;
}

body {
    /*  margin-bottom: 60px;*/
}

.navbar.floating-fixed {
    position: fixed !important;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1030;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    /* animation: navbar-fade-in 0.2s;  // 移除动画，防止闪烁 */
}

/* 保留 keyframes 以备后续需要，但不再使用动画 */
/*
@keyframes navbar-fade-in {
    from { transform: translateY(-100%); opacity: 0; }
    to   { transform: translateY(0); opacity: 1; }
}
*/

.markdown-body {
    font-family: "Roboto", "Nunito", "Segoe UI", "Arial", sans-serif;
    font-size: 1rem;
    line-height: 1.8;
    color: #212529;
    background: #fff;
    padding: 0px 1rem 0px 1rem;
    /* 上右下左 */
    border-radius: 0.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    max-width: 100%;
    word-break: break-word;
}

    .markdown-body h1 {
        font-size: 2rem;
    }

    .markdown-body h2,
    .markdown-body h3,
    .markdown-body h4,
    .markdown-body h5,
    .markdown-body h6 {
        text-indent: .5em;
    }

    .markdown-body p {
        margin: 1em;
    }

    .markdown-body a {
        color: #258cfb;
        text-decoration: underline;
        word-break: break-all;
    }

    .markdown-body blockquote {
        border-left: 4px solid #258cfb;
        background: #f8f9fa;
        padding: 0.5rem 1rem;
        margin: 1rem 0;
        color: #555;
    }

        .markdown-body blockquote p {
            margin: 0;
        }

    .markdown-body code,
    .markdown-body pre {
        font-family: "Fira Mono", "Consolas", "Menlo", monospace;
        background: #f6f8fa;
        border-radius: 4px;
        padding: 0.2em 0.4em;
        color: #d63384;
    }

    .markdown-body pre {
        padding: 1em;
        overflow-x: auto;
    }

    .markdown-body table {
        border-collapse: collapse;
        margin: 1rem 0;
        width: 100%;
    }

    .markdown-body th,
    .markdown-body td {
        border: 1px solid #dee2e6;
        padding: 0.5rem 1rem;
    }

    .markdown-body th {
        background: #f1f3f5;
        font-weight: 600;
    }

    .markdown-body img {
        max-width: 100%;
        height: auto;
        display: block;
        margin: 1rem auto;
        border-radius: 0.375rem;
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    }