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;
    margin-top: 1.25rem;
    margin-bottom: 0.75rem;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid var(--light);
    font-weight: 700;
    color: var(--tertiary);
}

.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
    text-indent: .5em;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--tertiary);
}

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

.markdown-body a {
    color: var(--primary);
    text-decoration: underline;
    word-break: break-all;
    transition: color .15s ease-in-out;
}

.markdown-body blockquote {
    border-left: 4px solid var(--primary);
    background: var(--lighter);
    padding: 0.75rem 1rem;
    margin: 1rem 0;
    color: #495057;
}

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

.markdown-body code {
    font-family: "Fira Mono", "Consolas", "Menlo", monospace;
    background: var(--lighter);
    border: 1px solid var(--light);
    border-radius: 4px;
    padding: 0.2em 0.4em;
    color: var(--pink);
}

.markdown-body pre {
    background: var(--lighter);
    border: 1px solid var(--light);
    border-radius: 6px;
    padding: 1rem;
    overflow-x: auto;
    box-shadow: 0 1px 3px rgba(0,0,0,.06);
}

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

.markdown-body th,
.markdown-body td {
    border: 1px solid var(--light);
    padding: 0.5rem 1rem;
    vertical-align: top;
}

.markdown-body th {
    background: var(--secondary);
    color: #495057;
    font-weight: 600;
}

.markdown-body img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 1rem auto;
    border: 1px solid var(--light);
    border-radius: 0.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.custom-modal-close {
    width: 1.6rem;
    height: 1.6rem;
    border: none;
    border-radius: 50%;
    background: #e9ecef;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.1rem;
    transition: background 0.2s;
}

.custom-modal-close i {
    font-size: 1rem;
    color: #6c757d;
    transition: color 0.2s;
}

.custom-modal-close:hover,
.custom-modal-close:focus {
    background: #eea3ad !important;
    /* 更红的浅红色 */
}

.custom-modal-close:hover i,
.custom-modal-close:focus i {
    color: #dc3545 !important;
    /* 红色叉号 */
}

.markdown-body a:hover,
.markdown-body a:focus {
    color: var(--blue);
    text-decoration: underline;
}

.markdown-body hr {
    height: 1px;
    border: none;
    background: var(--light);
    margin: 1.25rem 0;
}

.markdown-body pre code {
    background: transparent;
    border: none;
    padding: 0;
    color: inherit;
}

.markdown-body ul,
.markdown-body ol {
    margin: 0.5rem 0 1rem 1.25rem;
}

.markdown-body li {
    margin: 0.25rem 0;
}

.markdown-body kbd {
    background: #f1f3f5;
    border: 1px solid var(--light);
    border-radius: 4px;
    padding: 0.15em 0.3em;
    font-family: ui-monospace, "Fira Mono", "Consolas", "Menlo", monospace;
}

.markdown-body details {
    background: var(--lighter);
    border: 1px solid var(--light);
    border-radius: 6px;
    padding: 0.5rem 0.75rem;
    margin: 0.75rem 0;
}

.markdown-body summary {
    font-weight: 600;
    color: var(--tertiary);
    cursor: pointer;
}

.markdown-body em {
    font-style: italic;
}

.markdown-body strong {
    font-weight: 700;
}

.markdown-body del {
    text-decoration: line-through;
    color: #6c757d;
}

.markdown-body ins {
    text-decoration: underline;
}

.markdown-body mark {
    background: rgba(255, 214, 0, 0.25);
    border-bottom: 1px solid rgba(255, 214, 0, 0.6);
    border-radius: 2px;
    padding: 0 0.2em;
    color: #6c4f00;
}

.markdown-body sub {
    font-size: 85%;
    line-height: 0;
    vertical-align: baseline;
    position: relative;
    bottom: -0.25em;
}

.markdown-body sup {
    font-size: 85%;
    line-height: 0;
    vertical-align: baseline;
    position: relative;
    top: -0.5em;
}

.markdown-body abbr[title] {
    text-decoration: underline dotted;
    cursor: help;
    border-bottom: none;
}

.markdown-body small {
    font-size: 0.875em;
    color: #6c757d;
}

.markdown-body figure {
    margin: 1rem 0;
    text-align: center;
}

.markdown-body figcaption {
    font-size: 0.9em;
    color: #6c757d;
    margin-top: 0.5rem;
}

.markdown-body table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.markdown-body thead th {
    background: var(--secondary);
}

.markdown-body tbody tr:nth-child(odd) {
    background: rgba(0, 0, 0, 0.02);
}

.markdown-body caption {
    caption-side: bottom;
    font-size: 0.9em;
    color: #6c757d;
    padding: 0.25rem 0;
}

.markdown-body code {
    word-break: break-word;
}

.markdown-body blockquote cite {
    display: block;
    font-size: 0.9em;
    color: #6c757d;
    margin-top: 0.5rem;
}

.markdown-body .footnotes {
    border-top: 1px solid var(--light);
    margin-top: 1.5rem;
    padding-top: 0.75rem;
    font-size: 0.95em;
    color: #6c757d;
}

.markdown-body .footnotes ol {
    padding-left: 1.25rem;
}

.markdown-body .footnotes li {
    margin: 0.5rem 0;
}

.markdown-body .footnotes .footnote-backref {
    color: var(--primary);
}

.markdown-body ul.task-list {
    list-style: none;
    padding-left: 0;
}

.markdown-body .task-list-item {
    list-style: none;
}

.markdown-body .task-list-item input[type="checkbox"] {
    margin-right: 0.5rem;
    vertical-align: middle;
    accent-color: var(--primary);
}

.markdown-body dl {
    margin: 1rem 0;
}

.markdown-body dt {
    font-weight: 600;
    color: var(--tertiary);
}

.markdown-body dd {
    margin: 0.25rem 0 0.75rem 1.25rem;
}

.markdown-body q {
    quotes: "“" "”" "‘" "’";
}

.markdown-body q::before {
    content: open-quote;
}

.markdown-body q::after {
    content: close-quote;
}

.markdown-body iframe,
.markdown-body video {
    max-width: 100%;
    border-radius: 0.5rem;
}