/* ==========================================================================
   modern.css — 主题现代化美化层(2026)
   加载顺序:bootstrap.min.css → hux-blog.min.css → syntax.css → 本文件
   仅做覆盖,不改动原主题文件;支持 亮/暗 双模式(CSS 变量 + .dark/.light 类)
   ========================================================================== */

/* ---------- 主题变量 ---------- */
:root {
    color-scheme: light;
    --accent: #007a93;
    --accent-strong: #005f75;
    --accent-contrast: #ffffff;
    --accent-soft: rgba(0, 133, 161, 0.08);
    --bg: #f6f7f9;
    --content-bg: #ffffff;
    --text: #23292f;
    --text-muted: #5b6570;
    --text-soft: #4d5866;
    --border: #e7ebef;
    --code-border: #dce3e9;
    --card-border: rgba(31, 35, 40, 0.08);
    --card-shadow: 0 1px 2px rgba(16, 24, 40, 0.04), 0 8px 24px -14px rgba(16, 24, 40, 0.12);
    --card-shadow-hover: 0 4px 10px rgba(16, 24, 40, 0.06), 0 22px 44px -18px rgba(16, 24, 40, 0.22);
    --code-bg: #f6f8fa;
    --code-text: #24292f;
    --inline-code-bg: rgba(175, 184, 193, 0.18);
    --navbar-bg: rgba(255, 255, 255, 0.86);
    --selection: rgba(0, 133, 161, 0.22);
    --mono: "SF Mono", "JetBrains Mono", "Fira Code", Menlo, Consolas, "Liberation Mono", monospace;
    --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
            "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --hero-overlay: linear-gradient(160deg, rgba(10, 26, 40, 0.32) 0%, rgba(10, 26, 40, 0.16) 42%, rgba(8, 94, 107, 0.32) 100%);
}

html.dark {
    color-scheme: dark;
    --accent: #37b0c6;
    --accent-strong: #6fd3e4;
    --accent-contrast: #06222a;
    --accent-soft: rgba(55, 176, 198, 0.12);
    --bg: #0d1117;
    --content-bg: #161b22;
    --text: #e6edf3;
    --text-muted: #9aa7b4;
    --text-soft: #a8b3bf;
    --border: #2b323b;
    --code-border: #2b323b;
    --card-border: rgba(240, 246, 252, 0.09);
    --card-shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 10px 28px -16px rgba(0, 0, 0, 0.6);
    --card-shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.45), 0 24px 48px -20px rgba(0, 0, 0, 0.7);
    --code-bg: #161b22;
    --code-text: #e6edf3;
    --inline-code-bg: rgba(110, 118, 129, 0.22);
    --navbar-bg: rgba(13, 17, 23, 0.82);
    --selection: rgba(55, 176, 198, 0.30);
    --hero-overlay: linear-gradient(160deg, rgba(5, 12, 20, 0.46) 0%, rgba(5, 12, 20, 0.28) 42%, rgba(4, 40, 48, 0.46) 100%);
}

@media (prefers-color-scheme: dark) {
    :root:not(.light) {
        color-scheme: dark;
        --accent: #37b0c6;
        --accent-strong: #6fd3e4;
        --accent-contrast: #06222a;
        --accent-soft: rgba(55, 176, 198, 0.12);
        --bg: #0d1117;
        --content-bg: #161b22;
        --text: #e6edf3;
        --text-muted: #9aa7b4;
        --text-soft: #a8b3bf;
        --border: #2b323b;
        --code-border: #2b323b;
        --card-border: rgba(240, 246, 252, 0.09);
        --card-shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 10px 28px -16px rgba(0, 0, 0, 0.6);
        --card-shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.45), 0 24px 48px -20px rgba(0, 0, 0, 0.7);
        --code-bg: #161b22;
        --code-text: #e6edf3;
        --inline-code-bg: rgba(110, 118, 129, 0.22);
        --navbar-bg: rgba(13, 17, 23, 0.82);
        --selection: rgba(55, 176, 198, 0.30);
        --hero-overlay: linear-gradient(160deg, rgba(5, 12, 20, 0.46) 0%, rgba(5, 12, 20, 0.28) 42%, rgba(4, 40, 48, 0.46) 100%);
    }
}

/* ---------- 基础 ---------- */
/* 仓库自带 bootstrap 3.4 把根字号设为 10px,导致所有 rem 值缩小 37.5%,
   这里恢复浏览器默认 16px(全站无其他 rem 依赖,已核实) */
html {
    font-size: 100%;
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--sans) !important;
    font-size: 17px;
    background: var(--bg);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    transition: background-color 0.25s ease, color 0.25s ease;
}

::selection {
    background: var(--selection);
}

a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: color-mix(in srgb, var(--text-muted) 35%, transparent);
    border-radius: 8px;
    border: 2px solid transparent;
    background-clip: content-box;
}

::-webkit-scrollbar-thumb:hover {
    background: color-mix(in srgb, var(--accent) 60%, transparent);
    background-clip: content-box;
}

/* ---------- 导航栏:毛玻璃 ---------- */
.navbar-custom {
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.navbar-custom.is-fixed {
    background: var(--navbar-bg) !important;
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid var(--card-border);
    box-shadow: 0 8px 24px -18px rgba(0, 0, 0, 0.35);
}

.navbar-custom.is-fixed .navbar-brand,
.navbar-custom.is-fixed .nav li a {
    color: var(--text) !important;
}

.navbar-custom.is-fixed .navbar-brand:hover,
.navbar-custom.is-fixed .nav li a:hover {
    color: var(--accent) !important;
}

@media (max-width: 991px) {
    .navbar-custom {
        background: var(--navbar-bg);
        -webkit-backdrop-filter: saturate(180%) blur(14px);
        backdrop-filter: saturate(180%) blur(14px);
        border-bottom: 1px solid var(--card-border);
    }

    .navbar-custom .navbar-brand,
    .navbar-custom .nav li a {
        color: var(--text) !important;
    }

    .navbar-toggle .icon-bar {
        background-color: var(--text) !important;
    }
}

/* ---------- 导航链接:下划线滑入 ---------- */
@media (min-width: 768px) {
    .navbar-custom .nav li a {
        position: relative;
    }

    .navbar-custom .nav li a::after {
        content: "";
        position: absolute;
        left: 20px;
        right: 20px;
        bottom: 14px;
        height: 1.5px;
        background: currentColor;
        transform: scaleX(0);
        transform-origin: center;
        transition: transform 0.25s ease;
    }

    .navbar-custom .nav li a:hover::after,
    .navbar-custom .nav li a:focus::after {
        transform: scaleX(1);
    }
}

/* ---------- 头图:入场动画 / 桌面视差 / 遮罩 ---------- */
@keyframes hero-fade-up {
    from {
        opacity: 0;
        transform: translateY(26px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.intro-header .site-heading h1,
.intro-header .page-heading h1 {
    animation: hero-fade-up 0.7s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.intro-header .site-heading .subheading,
.intro-header .page-heading .subheading {
    animation: hero-fade-up 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.12s both;
}

.intro-header .post-heading .tags {
    animation: hero-fade-up 0.6s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.intro-header .post-heading h1 {
    animation: hero-fade-up 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.08s both;
}

.intro-header .post-heading .subheading {
    animation: hero-fade-up 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.16s both;
}

.intro-header .post-heading .meta {
    animation: hero-fade-up 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.24s both;
}

@media (min-width: 768px) {
    .intro-header {
        background-attachment: fixed;
    }
}

.intro-header {
    position: relative;
}

.intro-header::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--hero-overlay);
    pointer-events: none;
}

.intro-header .container {
    position: relative;
    z-index: 1;
}

.intro-header .site-heading h1,
.intro-header .post-heading h1,
.intro-header .subheading,
.intro-header .meta {
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.38);
}

.intro-header .meta {
    font-style: normal;
    letter-spacing: 0.04em;
}

.intro-header .subheading {
    letter-spacing: 0.06em;
}

.intro-header .site-heading .subheading,
.intro-header .page-heading .subheading {
    font-size: 20px;
}

.intro-header .post-heading .meta {
    font-size: 1.05rem;
}

/* 头图上的标签 → 半透明胶囊 */
.intro-header .tags .tag {
    display: inline-block;
    padding: 3px 13px;
    margin: 0 6px 6px 0;
    border: 1px solid rgba(255, 255, 255, 0.42);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.12);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
    color: #fff;
    font-size: 12px;
    letter-spacing: 0.05em;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.intro-header .tags .tag:hover {
    background: rgba(255, 255, 255, 0.28);
    border-color: rgba(255, 255, 255, 0.7);
}

/* ---------- 首页文章卡片 ---------- */
.post-preview {
    background: var(--content-bg);
    border: 1px solid var(--card-border);
    border-radius: 14px;
    padding: 24px 28px 16px;
    margin: 0 0 22px;
    box-shadow: var(--card-shadow);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.post-preview:hover {
    transform: translateY(-3px);
    box-shadow: var(--card-shadow-hover);
    border-color: color-mix(in srgb, var(--accent) 30%, transparent);
}

.post-preview > a > .post-title .pin-badge {
    display: inline-block;
    margin-right: 8px;
    padding: 1px 10px;
    border-radius: 999px;
    background: var(--accent-soft);
    border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
    color: var(--accent);
    font-size: 13px;
    font-weight: 500;
    line-height: 1.7;
    vertical-align: 3px;
}

.post-preview > a > .post-title {
    font-size: 1.42rem;
    font-weight: 650;
    letter-spacing: -0.01em;
    margin: 0 0 8px;
    transition: color 0.2s ease;
}

.post-preview > a > .post-title::after {
    content: "\2192";
    display: inline-block;
    margin-left: 0.4em;
    font-weight: 400;
    color: var(--accent);
    opacity: 0;
    transform: translateX(-8px);
    transition: opacity 0.25s ease, transform 0.25s ease;
}

.post-preview:hover > a > .post-title::after,
.post-preview > a:focus-visible > .post-title::after {
    opacity: 1;
    transform: translateX(0);
}

.post-preview > a > .post-subtitle {
    font-size: 1.02rem;
    font-weight: 400;
    color: var(--text-soft);
    margin-bottom: 10px;
}

.post-preview .post-content-preview {
    font-style: normal;
    color: var(--text-soft);
    font-size: 1rem;
    line-height: 1.85;
    letter-spacing: 0.01em;
}

.post-preview-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid var(--card-border);
}

.post-preview > .post-meta,
.post-preview-footer .post-meta {
    font-family: var(--sans);
    font-style: normal;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin: 0;
    letter-spacing: 0.02em;
}

.preview-tags {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 6px;
}

/* 标签胶囊(卡片内 / 侧栏 / 标签页通用) */
.preview-tags a,
.sidebar-container .tags a,
#tag_cloud a {
    display: inline-block;
    padding: 2px 12px;
    border: 1px solid transparent !important;
    border-radius: 999px !important;
    background: var(--accent-soft);
    color: var(--accent) !important;
    font-size: 0.82rem;
    line-height: 1.7;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.preview-tags a:hover,
.sidebar-container .tags a:hover,
.sidebar-container .tags a:active,
#tag_cloud a:hover {
    background: var(--accent);
    color: var(--accent-contrast) !important;
    text-decoration: none;
}

/* ---------- 分页 ---------- */
.pager li > a {
    display: inline-block;
    padding: 8px 20px;
    border: 1px solid var(--border) !important;
    border-radius: 999px !important;
    background: var(--content-bg);
    color: var(--text) !important;
    font-size: 15px;
    box-shadow: var(--card-shadow);
    transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.pager li > a:hover,
.pager li > a:focus {
    border-color: var(--accent) !important;
    background: var(--accent-soft);
    color: var(--accent) !important;
    text-decoration: none;
}

/* ---------- 文章排版 ---------- */
.post-container p {
    font-size: 1.25rem;
    line-height: 2.0;
    letter-spacing: 0.015em;
    margin: 1.35em 0;
    color: var(--text);
}

.post-container h1, .post-container h2, .post-container h3,
.post-container h4, .post-container h5, .post-container h6 {
    color: var(--text);
    font-weight: 650;
    letter-spacing: -0.01em;
}

.post-container h2 {
    font-size: 1.72rem;
    margin-top: 2.3em;
    margin-bottom: 1em;
    padding-bottom: 0.35em;
    border-bottom: 1px solid var(--border);
}

.post-container h3 {
    font-size: 1.42rem;
    margin-top: 1.9em;
    margin-bottom: 0.85em;
}

.post-container h4 {
    font-size: 1.2rem;
    margin-top: 1.6em;
}

.post-container ul, .post-container ol {
    padding-left: 1.7em;
    margin: 1.2em 0;
}

.post-container li {
    font-size: 1.25rem;
    line-height: 1.95;
    margin: 0.4em 0;
    color: var(--text);
}

.post-container strong {
    color: var(--text);
    font-weight: 650;
}

.post-container hr {
    border: 0;
    border-top: 1px solid var(--border);
    margin: 2.6em auto;
}

/* 正文链接:下划线生长动画 */
.post-container p a,
.post-container li a {
    color: var(--accent);
    text-decoration: none;
    background-image: linear-gradient(var(--accent), var(--accent));
    background-repeat: no-repeat;
    background-position: 0 100%;
    background-size: 0% 1.5px;
    transition: color 0.2s ease, background-size 0.25s ease;
    padding-bottom: 1px;
}

.post-container p a:hover,
.post-container li a:hover {
    color: var(--accent-strong);
    background-size: 100% 1.5px;
    background-image: linear-gradient(var(--accent-strong), var(--accent-strong));
}

.post-container a:has(> img) {
    background-image: none;
    padding-bottom: 0;
}

/* 引用块 */
.post-container blockquote {
    border-left: 3px solid var(--accent);
    background: var(--accent-soft);
    border-radius: 0 10px 10px 0;
    padding: 12px 22px;
    margin: 1.6em 0;
    color: var(--text-soft);
    font-style: normal !important;
    font-size: 1.15rem;
}

.post-container blockquote p {
    margin: 0.5em 0;
    font-size: 1.15rem;
    color: var(--text-soft);
    font-style: normal !important;
}

/* 图片 */
.post-container img {
    border-radius: 10px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08), 0 16px 36px -20px rgba(0, 0, 0, 0.25);
}

html.dark .post-container img {
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4), 0 18px 40px -20px rgba(0, 0, 0, 0.6);
}

/* 行内代码 */
.post-container :not(pre) > code {
    font-family: var(--mono);
    font-size: 0.86em;
    color: var(--text);
    background: var(--inline-code-bg);
    border-radius: 6px;
    padding: 0.15em 0.45em;
    font-size: 0.88em;
}

/* 代码块 */
code, pre {
    font-family: var(--mono);
}

.highlight pre,
.post-container pre {
    background-color: var(--code-bg) !important;
    border: 1px solid var(--code-border) !important;
    border-radius: 12px !important;
    padding: 42px 22px 18px !important;
    font-size: 1rem;
    line-height: 1.75;
    box-shadow: var(--card-shadow);
    -webkit-overflow-scrolling: touch;
}

.highlight .hll {
    background-color: color-mix(in srgb, var(--accent) 14%, transparent) !important;
}

figure.highlight {
    margin: 1.6em 0;
}

.highlight,
figure.highlight {
    position: relative;
}

/* macOS 三色窗口灯 */
.highlight::after {
    content: "";
    position: absolute;
    top: 16px;
    left: 20px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ff5f57;
    box-shadow: 20px 0 0 #febc2e, 40px 0 0 #28c840;
    pointer-events: none;
}

/* 复制按钮 */
.copy-btn {
    position: absolute;
    top: 9px;
    right: 12px;
    padding: 3px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--content-bg);
    color: var(--text-muted);
    font-family: var(--sans);
    font-size: 12px;
    line-height: 1.6;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.highlight:hover .copy-btn,
.copy-btn:focus-visible {
    opacity: 1;
}

.copy-btn:hover {
    color: var(--accent);
    border-color: var(--accent);
}

.copy-btn.copied {
    color: #28c840;
    border-color: #28c840;
    opacity: 1;
}

/* ---------- 表格 ---------- */
.post-container .table-responsive {
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    background: var(--content-bg);
    margin: 1.6em 0;
}

.post-container table.table {
    margin: 0;
    width: 100%;
    max-width: 100%;
}

.post-container table.table th,
.post-container table.table td {
    color: var(--text);
    border: 0 !important;
}

.post-container table.table th {
    background: var(--code-bg);
    font-weight: 600;
    border-bottom: 1px solid var(--border) !important;
}

.post-container table.table tbody td {
    border-bottom: 1px solid var(--border) !important;
}

.post-container table.table th,
.post-container table.table td {
    padding: 10px 16px;
    font-size: 1.02rem;
}

.post-container table.table tbody tr:last-child td {
    border-bottom: 0 !important;
}

.post-container table.table tbody tr:nth-child(even) {
    background: color-mix(in srgb, var(--text-muted) 5%, transparent);
}

/* ---------- 侧栏 ---------- */
.sidebar-container {
    color: var(--text-muted) !important;
    font-size: 15px;
}

.sidebar-container h5 {
    color: var(--text-muted) !important;
    font-size: 13.5px;
    font-weight: 600;
    letter-spacing: 0.1em;
    padding-bottom: 0.4em;
}

.sidebar-container hr {
    border-top: 1px solid var(--border);
}

.sidebar-container h5 a {
    color: var(--text-muted) !important;
}

.sidebar-container h5 a:hover {
    color: var(--accent) !important;
}

.sidebar-container a {
    color: var(--text-muted) !important;
}

.sidebar-container a:hover,
.sidebar-container a:active {
    color: var(--accent) !important;
}

.sidebar-container .short-about img {
    width: 108px !important;
    display: block;
    margin: 0 auto 14px;
    border-radius: 50% !important;
    box-shadow: 0 0 0 4px var(--accent-soft), 0 6px 20px -8px rgba(0, 0, 0, 0.35);
}

.sidebar-container .short-about p {
    text-align: center;
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.75;
}

/* ---------- 页脚 ---------- */
footer {
    padding: 42px 0 36px;
    border-top: 1px solid var(--border);
}

footer .list-inline .fa-stack {
    transition: transform 0.2s ease;
}

footer .list-inline a:hover .fa-stack {
    transform: translateY(-3px);
}

footer .list-inline .fa-circle {
    color: var(--text-muted);
    transition: color 0.2s ease;
}

footer .list-inline a:hover .fa-circle {
    color: var(--accent);
}

footer .copyright {
    color: var(--text-muted) !important;
    font-size: 14px;
    line-height: 2;
}

footer .copyright a {
    color: var(--text-muted) !important;
}

footer .copyright a:hover {
    color: var(--accent) !important;
}

/* ---------- 主题切换按钮 ---------- */
.theme-toggle {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 1040;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--card-border);
    border-radius: 50%;
    background: var(--content-bg);
    color: var(--text);
    box-shadow: var(--card-shadow-hover);
    cursor: pointer;
    transition: transform 0.2s ease, background-color 0.25s ease;
}

.theme-toggle:hover {
    transform: translateY(-2px);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }

html.dark .theme-toggle .icon-sun { display: block; }
html.dark .theme-toggle .icon-moon { display: none; }

/* ==========================================================================
   暗色模式:正文 / 代码高亮适配
   ========================================================================== */
html.dark body,
html.dark article,
html.dark .post-container,
html.dark .post-preview > a,
html.dark .post-preview > a > .post-title,
html.dark .post-container p,
html.dark .post-container li {
    color: var(--text);
}

html.dark .post-preview > a:hover,
html.dark .post-preview > a:focus {
    color: var(--accent);
}

/* rouge 语法高亮 → GitHub Dark 风格 */
html.dark .highlight pre,
html.dark .highlight .hll {
    background-color: #10151c !important;
}

html.dark .highlight .c,
html.dark .highlight .cm,
html.dark .highlight .c1,
html.dark .highlight .cs,
html.dark .highlight .cp,
html.dark .highlight .ge {
    color: #7d8896 !important;
    font-style: italic !important;
}

html.dark .highlight .k,
html.dark .highlight .kc,
html.dark .highlight .kd,
html.dark .highlight .kn,
html.dark .highlight .kp,
html.dark .highlight .kr,
html.dark .highlight .kt,
html.dark .highlight .ow {
    color: #ff7b72 !important;
}

html.dark .highlight .o {
    color: #ff7b72 !important;
    font-weight: normal !important;
}

html.dark .highlight .s,
html.dark .highlight .sb,
html.dark .highlight .sc,
html.dark .highlight .sd,
html.dark .highlight .s2,
html.dark .highlight .se,
html.dark .highlight .sh,
html.dark .highlight .si,
html.dark .highlight .sx,
html.dark .highlight .sr,
html.dark .highlight .s1,
html.dark .highlight .ss {
    color: #a5d6ff !important;
}

html.dark .highlight .m,
html.dark .highlight .mb,
html.dark .highlight .mf,
html.dark .highlight .mh,
html.dark .highlight .mi,
html.dark .highlight .il,
html.dark .highlight .mo,
html.dark .highlight .mx {
    color: #79c0ff !important;
}

html.dark .highlight .nf,
html.dark .highlight .nx,
html.dark .highlight .nl {
    color: #d2a8ff !important;
}

html.dark .highlight .na,
html.dark .highlight .nb,
html.dark .highlight .nc,
html.dark .highlight .nd,
html.dark .highlight .ne {
    color: #ffa657 !important;
}

html.dark .highlight .nt,
html.dark .highlight .nn,
html.dark .highlight .ni {
    color: #7ee787 !important;
}

html.dark .highlight .gh,
html.dark .highlight .gu {
    color: #7ee787 !important;
    font-weight: 600 !important;
}

html.dark .highlight .gp { color: #7d8896 !important; }
html.dark .highlight .go { color: #7d8896 !important; }
html.dark .highlight .w  { color: #c9d1d9 !important; }
html.dark .highlight .gs { font-weight: 600 !important; }

html.dark .highlight .err {
    color: #f85149 !important;
    background-color: transparent !important;
}

html.dark .highlight .gd {
    color: #ffa198 !important;
    background-color: rgba(248, 81, 73, 0.15) !important;
}

html.dark .highlight .gi {
    color: #aff5b4 !important;
    background-color: rgba(63, 185, 80, 0.15) !important;
}

/* 兼容不支持 :has 的浏览器的降级:正文图片链接下划线去除 */
.post-container a img {
    vertical-align: middle;
}

/* ==========================================================================
   特效:滚动显现 / 回到顶部 / 图片灯箱
   ========================================================================== */

/* 滚动进入视口渐显(JS 加 .reveal,渐进增强,无 JS 不隐藏内容) */
.reveal {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity 0.65s ease, transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* 回到顶部 */
.backtop {
    position: fixed;
    right: 22px;
    bottom: 76px;
    z-index: 1040;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--card-border);
    border-radius: 50%;
    background: var(--content-bg);
    color: var(--text);
    box-shadow: var(--card-shadow-hover);
    cursor: pointer;
    opacity: 0;
    transform: translateY(10px);
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s ease, background-color 0.25s ease;
}

.backtop.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.backtop:hover {
    transform: translateY(-2px);
}

.backtop svg {
    width: 18px;
    height: 18px;
}

/* 图片灯箱 */
.lightbox-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(8, 12, 18, 0.88);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    cursor: zoom-out;
    animation: lightbox-in 0.25s ease both;
}

.lightbox-overlay img {
    max-width: 92vw;
    max-height: 90vh;
    border-radius: 10px;
    box-shadow: 0 30px 80px -20px rgba(0, 0, 0, 0.7);
    animation: lightbox-zoom 0.3s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes lightbox-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes lightbox-zoom {
    from { opacity: 0; transform: scale(0.92); }
    to { opacity: 1; transform: scale(1); }
}

/* 正文图片可点击提示 */
.post-container img {
    cursor: zoom-in;
}

/* 减少动态效果偏好:关闭所有特效 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }

    html {
        scroll-behavior: auto;
    }
}