@font-face {
    font-family: 'ChineseFont';
    src: url('../fonts/luoliti.ttf') format('truetype');
    font-weight: normal; font-style: normal; font-display: swap;
    unicode-range: U+4E00-9FFF, U+3400-4DBF, U+20000-2A6DF, U+3000-303F, U+FF00-FFEF, U+2E80-2EFF, U+31C0-31EF, U+FE10-FE1F, U+FE30-FE4F;
}
:root {
    --accent-hue: 220;
    --accent-sat: 60%;
    --accent-lightness: 50%;
    --accent: hsl(var(--accent-hue), var(--accent-sat), var(--accent-lightness));
    --accent-hover: hsl(var(--accent-hue), calc(var(--accent-sat) + 10%), calc(var(--accent-lightness) - 10%));
    --accent-light: hsl(var(--accent-hue), var(--accent-sat), 90%);
    --code-bg: hsl(var(--accent-hue), var(--accent-sat), 96%);
    --bg: hsl(var(--accent-hue), 60%, 96%);
    --surface: #ffffff;
    --border: #dce7f5;
    --text: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --shadow: 0 2px 8px rgba(0,0,0,0.05), 0 1px 3px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.06), 0 2px 6px rgba(0,0,0,0.04);
    --radius: 14px;
    --radius-sm: 10px;
    --header-height: 56px;
    --fixed-icon-bg: #f0f4ff;
    --fixed-icon-color: #6b7a99;
    --base-font-size: 14px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: 'ChineseFont', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    font-size: var(--base-font-size);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    letter-spacing: -0.01em;
    transition: font-size 0.2s, background 0.35s ease, color 0.35s ease;
}
::selection {
    background: hsl(var(--accent-hue), var(--accent-sat), 85%);
    color: var(--text);
}
[data-theme="dark"] ::selection {
    background: hsl(var(--accent-hue), var(--accent-sat), 25%);
    color: #e6edf3;
}
/* 自定义滚动条 */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: hsl(var(--accent-hue), 20%, 82%);
    border-radius: 3px;
    transition: background 0.2s;
}
::-webkit-scrollbar-thumb:hover { background: hsl(var(--accent-hue), 20%, 70%); }
[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: hsl(var(--accent-hue), 15%, 28%);
}
[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: hsl(var(--accent-hue), 15%, 40%);
}
code, pre, .markdown-body code, .markdown-body pre {
    font-family: 'JetBrains Mono', 'SF Mono', 'Cascadia Code', 'Fira Code', monospace;
}
.top-bar {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,0.82);
    backdrop-filter: blur(16px) saturate(1.4);
    -webkit-backdrop-filter: blur(16px) saturate(1.4);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    box-shadow: 0 1px 3px rgba(0,0,0,0.03), 0 0 0 1px rgba(255,255,255,0.5) inset;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 20px; height: var(--header-height);
    transition: transform 0.3s, box-shadow 0.3s, background 0.35s ease;
}
.reading-progress {
    position: fixed; top: 0; left: 0; z-index: 200;
    width: 0%; height: 3px;
    background: linear-gradient(90deg, var(--accent), hsl(calc(var(--accent-hue) + 30), var(--accent-sat), 60%));
    transition: width 0.1s linear;
    pointer-events: none;
    opacity: 0;
    box-shadow: 0 0 6px var(--accent);
}
.reading-progress.active { opacity: 1; }
.top-bar.hidden { transform: translateY(-100%); }
.header-left { display: flex; align-items: center; }
.brand { font-size: 14px; font-weight: 650; color: var(--text-secondary); letter-spacing: 0.01em; }
.header-right { display: flex; align-items: center; gap: 6px; }
.icon-btn {
    width: 36px; height: 36px; border-radius: 10px;
    background: transparent; border: none; color: var(--text-secondary);
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1); text-decoration: none;
    position: relative;
}
.icon-btn:hover { color: var(--accent); background: var(--accent-light); transform: scale(1.06); }
.icon-btn:active { transform: scale(0.94); }
.icon-btn svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.dropdown-panel {
    position: fixed; top: var(--header-height); left: 50%;
    transform: translateX(-50%) translateY(-12px);
    width: 90%; max-width: 540px;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius-sm); box-shadow: 0 8px 30px rgba(0,0,0,0.08);
    z-index: 200; opacity: 0; pointer-events: none;
    transition: opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1), transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden; max-height: 70vh;
    display: flex; flex-direction: column;
}
.dropdown-panel.active { opacity: 1; pointer-events: auto; transform: translateX(-50%) translateY(0); }
.dropdown-search { padding: 12px 14px; border-bottom: 1px solid var(--border); }
.dropdown-search input { width: 100%; padding: 8px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; background: var(--bg); color: var(--text); outline: none; }
.dropdown-list { flex: 1; overflow-y: auto; padding: 8px; }
.font-panel-inner { padding: 16px; display: flex; flex-direction: column; gap: 16px; }
.font-type-buttons { display: flex; gap: 8px; }
.font-type-btn {
    flex: 1; padding: 10px 16px;
    border: 1px solid var(--border); border-radius: 8px;
    background: var(--surface); color: var(--text);
    font-size: 14px; cursor: pointer; text-align: center; transition: all 0.2s;
}
.font-type-btn:hover { border-color: var(--accent); color: var(--accent); }
.font-type-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.font-size-slider { display: flex; align-items: center; gap: 12px; }
.font-size-slider input[type="range"] {
    flex: 1; -webkit-appearance: none;
    height: 6px; border-radius: 3px; background: var(--border); outline: none;
}
.font-size-slider input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none; width: 18px; height: 18px;
    border-radius: 50%; background: var(--accent); cursor: pointer;
}
.font-size-value { min-width: 40px; text-align: center; font-size: 14px; color: var(--text-secondary); }
.color-panel-content { padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.hue-slider {
    -webkit-appearance: none; appearance: none;
    width: 100%; height: 28px; border-radius: 14px;
    background: linear-gradient(to right, hsl(0,80%,60%), hsl(40,80%,60%), hsl(80,80%,60%), hsl(120,80%,60%), hsl(160,80%,60%), hsl(200,80%,60%), hsl(240,80%,60%), hsl(280,80%,60%), hsl(320,80%,60%), hsl(360,80%,60%));
    outline: none; cursor: pointer; border: 1px solid var(--border);
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.1);
}
.hue-slider::-webkit-slider-thumb { -webkit-appearance: none; width: 24px; height: 24px; border-radius: 50%; background: white; border: 2px solid var(--accent); cursor: pointer; }
.hue-slider::-moz-range-thumb { width: 24px; height: 24px; border-radius: 50%; background: white; border: 2px solid var(--accent); cursor: pointer; }
.color-reset-btn {
    padding: 6px 16px; border: 1px solid var(--border);
    border-radius: 8px; background: var(--surface);
    color: var(--text-secondary); font-size: 13px;
    cursor: pointer; font-family: inherit; transition: all 0.2s;
}
.color-reset-btn:hover { border-color: var(--accent); color: var(--accent); }
.main-container { max-width: 960px; margin: 0 auto; padding: 20px 16px 60px; }
.sidebar {
    display: none;
    position: fixed; top: 0; left: 0; bottom: 0;
    width: 280px;
    background: var(--surface); border-right: 1px solid var(--border);
    z-index: 120; overflow: hidden;
    flex-direction: column;
}
.sidebar-header {
    padding: 16px 20px; border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between;
    flex-shrink: 0;
}
.sidebar-brand { font-size: 15px; font-weight: 650; color: var(--text); display: flex; align-items: center; gap: 8px; }
.sidebar-brand svg { width: 20px; height: 20px; stroke: var(--accent); fill: none; stroke-width: 2; }
.sidebar-search {
    padding: 12px 16px; border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.sidebar-search input {
    width: 100%; padding: 8px 12px;
    border: 1px solid var(--border); border-radius: 8px;
    background: var(--bg); color: var(--text);
    font-size: 13px; font-family: inherit; outline: none;
    transition: border-color 0.2s;
}
.sidebar-search input:focus { border-color: var(--accent); }
.sidebar-list {
    flex: 1; overflow-y: auto; padding: 8px;
}
.sidebar-item {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 12px; border-radius: 8px; cursor: pointer;
    transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1); margin-bottom: 2px;
    text-decoration: none; color: var(--text);
}
.sidebar-item:hover { background: var(--bg); transform: translateX(4px); }
.sidebar-item.active { background: var(--accent); color: #fff; transform: none; }
.sidebar-item-icon {
    width: 32px; height: 32px; border-radius: 6px;
    background: var(--accent-light); color: var(--accent);
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.sidebar-item.active .sidebar-item-icon { background: rgba(255,255,255,0.2); color: #fff; }
.sidebar-item-icon svg { width: 16px; height: 16px; stroke: currentColor; fill: none; }
.sidebar-item-text {
    flex: 1; min-width: 0;
    font-size: 14px; font-weight: 500;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.sidebar-pin-icon { display: inline-flex; align-items: center; justify-content: center; margin-right: 3px; color: var(--accent); vertical-align: middle; position: relative; top: -1px; }
.sidebar-count {
    font-size: 12px; color: var(--text-muted); background: var(--bg);
    padding: 2px 8px; border-radius: 10px;
}
.sidebar-item.active .sidebar-count { background: rgba(255,255,255,0.2); color: #fff; }
.sidebar-toc-header {
    padding: 14px 16px 8px; font-size: 13px; font-weight: 600;
    color: var(--text-muted); display: none; flex-shrink: 0;
}
.sidebar-toc-list { display: none; flex: 1; overflow-y: auto; }
.sidebar-toc-list .toc-item {
    padding: 5px 12px 5px 12px; margin-bottom: 1px;
    border-radius: 6px; transition: all 0.15s;
    border-left: 2px solid transparent;
}
.sidebar-toc-list .toc-item:hover { background: var(--bg); }
.sidebar-toc-list .toc-item.active {
    background: var(--accent-light); color: var(--accent);
    border-left-color: var(--accent); font-weight: 600;
}
.sidebar-toc-list .toc-text { font-size: 0.85em; line-height: 1.5; }
.sidebar-toc-list .toc-block { width: 18px; height: 18px; border-radius: 4px; }
.sidebar-toc-list .toc-block svg { width: 11px; height: 11px; }
.sidebar-toc-list .toc-dot-circle { width: 5px; height: 5px; }
.sidebar-toc-list .toc-item[data-level="2"] .toc-text { font-size: 0.82em; }
.sidebar-toc-list .toc-item[data-level="3"] .toc-text { font-size: 0.78em; color: var(--text-muted); }
.sidebar-article-title {
    padding: 14px 16px 10px; font-size: 14px; font-weight: 600;
    color: var(--text); border-bottom: 1px solid var(--border);
    display: none; flex-shrink: 0;
    line-height: 1.4;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.sidebar-back-btn {
    display: none; align-items: center; gap: 6px;
    padding: 8px 16px; font-size: 13px; color: var(--text-muted);
    cursor: pointer; transition: all 0.15s; flex-shrink: 0;
    border-bottom: 1px solid var(--border);
}
.sidebar-back-btn:hover { color: var(--accent); background: var(--bg); }
.sidebar-back-btn svg { width: 14px; height: 14px; stroke: currentColor; fill: none; stroke-width: 2; }
.sidebar-resize {
    position: absolute; top: 0; right: -3px; bottom: 0;
    width: 6px; cursor: col-resize; z-index: 121;
    transition: background 0.2s;
}
.sidebar-resize:hover { background: var(--accent); opacity: 0.5; }
/* v2.6.5 修复：sidebar 收起后由独立的外部按钮恢复展开（折叠按钮在 sidebar 内会随之消失）；
   按钮垂直居中于左侧边缘，避免遮挡顶部网站标题 */
.sidebar-restore-btn {
    position: fixed; top: 50%; left: 8px;
    transform: translateY(-50%);
    width: 36px; height: 36px;
    background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
    color: var(--text-muted); cursor: pointer; z-index: 119;
    display: none; align-items: center; justify-content: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    transition: color 0.2s, border-color 0.2s;
}
.sidebar-restore-btn:hover { color: var(--accent); border-color: var(--accent); }
.sidebar-restore-btn svg { width: 16px; height: 16px; }
@media (min-width: 1025px) {
    .sidebar { display: flex; }
    body { padding-left: 280px; }
    .top-bar { left: 0; width: 100%; }
    .reading-progress { left: 280px; }
    .main-container { max-width: 860px; padding: 24px 40px 60px; }
    .floating-buttons .float-btn:not(#scrollToTopBtn):not(#floatHomeBtn) { display: none; }
    .floating-buttons { right: 24px; bottom: 24px; }
    .toc-popup { display: none !important; }
    .top-bar .icon-btn[id="btnSearch"],
    .top-bar .icon-btn[id="btnToc"] { display: none; }
    .markdown-body { padding: 36px 40px; }
    .markdown-body h1 { font-size: 2.2em; }
    .markdown-body h2 { font-size: 1.6em; }
    .markdown-body h3 { font-size: 1.3em; }
    .markdown-body p { font-size: 1.02em; line-height: 1.85; }
    .markdown-body pre { margin: 2em 0; }
    .prev-next-nav { margin-top: 24px; }
    .prev-next-btn { padding: 20px 24px; }
}
.cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px; }
.doc-card {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 20px; box-shadow: var(--shadow); transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
    cursor: pointer; display: flex; flex-direction: column; gap: 10px;
    animation: fadeSlideUp 0.4s ease both;
    position: relative; overflow: hidden;
}
.doc-card:focus-visible { outline: none; box-shadow: 0 0 0 3px hsla(var(--accent-hue), var(--accent-sat), 50%, 0.3); }
.doc-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, var(--accent), hsl(calc(var(--accent-hue) + 30), var(--accent-sat), 60%));
    opacity: 0; transition: opacity 0.35s;
}
.doc-card:hover::before { opacity: 1; }
.doc-card:hover { transform: translateY(-4px); box-shadow: 0 10px 32px rgba(0,0,0,0.08); border-color: var(--accent); }
.card-title { font-size: 1.15em; font-weight: 650; color: var(--text); }
.card-pin-icon { display: inline-flex; align-items: center; justify-content: center; margin-right: 4px; color: var(--accent); vertical-align: middle; position: relative; top: -1px; }
.card-meta { display: flex; flex-wrap: wrap; gap: 12px; font-size: 0.82em; color: var(--text-muted); }
.card-meta span { display: inline-flex; align-items: center; }
.meta-icon {
    display: inline-flex; align-items: center; justify-content: center;
    background: var(--accent-light); border-radius: 6px; padding: 3px; margin-right: 4px;
    color: var(--accent);
}
.meta-icon svg { width: 14px; height: 14px; stroke: var(--accent); fill: none; }
.card-excerpt { font-size: 0.9em; color: var(--text-secondary); }
.card-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; }
.card-author { font-size: 0.82em; color: var(--text-muted); display: flex; align-items: center; gap: 4px; margin-top: 2px; }
.card-author .meta-icon { background: var(--accent-light); margin-right: 4px; }
.tag { background: var(--accent-light); color: var(--accent); padding: 2px 8px; border-radius: 4px; font-size: 0.75em; font-weight: 500; }
.category-bar {
    display: none;
    align-items: center;
    padding: 8px 10px;
    margin-bottom: 18px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 50px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.03);
    gap: 6px;
}
.category-bar.has-categories { display: flex; }
.category-bar-left {
    display: flex; align-items: center; flex-shrink: 0;
}
.category-bar-right {
    display: flex; align-items: center; flex: 1;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    gap: 6px;
}
.category-bar-right::-webkit-scrollbar { display: none; }
.category-bar-divider {
    width: 1px; height: 18px;
    background: var(--border);
    flex-shrink: 0;
    margin: 0 4px;
}
.category-bar-item {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 5px 12px;
    border-radius: 8px;
    background: var(--surface);
    color: var(--text-muted);
    font-size: 0.82em;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
    border: 1px solid var(--border);
    flex-shrink: 0;
}
.category-bar-item:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--accent-light);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px hsla(var(--accent-hue), var(--accent-sat), 50%, 0.12);
}
.category-bar-item.active {
    color: #fff;
    background: var(--accent);
    border-color: var(--accent);
}
.category-bar-item.active .category-bar-count {
    color: rgba(255,255,255,0.75);
}
.category-bar-count {
    font-size: 0.78em;
    font-weight: 600;
    color: var(--text-muted);
    opacity: 0.7;
}
@keyframes fadeSlideUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
.doc-card:focus-visible, .sidebar-item:focus-visible, .icon-btn:focus-visible, .float-btn:focus-visible, .prev-next-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}
.reading-view { display: none; animation: fadeIn 0.3s ease; }
.reading-view.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
.markdown-body {
    word-wrap: break-word; padding: 40px 36px;
    background: var(--surface); line-height: 1.8;
    border-radius: 16px; box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.02);
}
.doc-header { margin-bottom: 24px; }
.doc-header .doc-stats { display: flex; align-items: center; gap: 16px; color: var(--fixed-icon-color); font-size: 0.85em; margin-bottom: 12px; }
.doc-stats .stat-item { display: flex; align-items: center; gap: 6px; }
.doc-stats .stat-item .meta-icon { background: var(--fixed-icon-bg) !important; color: var(--fixed-icon-color) !important; }
.doc-stats .stat-item .meta-icon svg { stroke: var(--fixed-icon-color) !important; }
.doc-header .doc-title { font-size: 2em; font-weight: 700; color: var(--text); line-height: 1.3; margin-bottom: 12px; }
.doc-header .doc-info { display: flex; flex-wrap: wrap; gap: 12px; font-size: 13px; color: var(--text-muted); align-items: center; }
.doc-info .info-item { display: flex; align-items: center; gap: 4px; }
.doc-info .tag-list { display: inline-flex; align-items: center; gap: 6px; }
.doc-info .tag-list .meta-icon {
    font-size: 14px; font-weight: 600;
    line-height: 1; display: inline-flex; align-items: center; justify-content: center;
    border-radius: 6px; background: var(--accent-light); color: var(--accent); margin-right: 0;
    padding: 2px 4px;
}
.doc-info .tag-list .tag-text { color: var(--text-muted); font-size: 0.85em; }
.markdown-body h1, .markdown-body h2, .markdown-body h3,
.markdown-body h4, .markdown-body h5, .markdown-body h6 {
    margin-top: 2em; margin-bottom: 0.8em; font-weight: 700; letter-spacing: -0.01em;
    position: relative; scroll-margin-top: 80px;
}
.markdown-body h1 { font-size: 2em; border-bottom: 2px solid var(--border); padding-bottom: 0.4em; margin-top: 0; }
.markdown-body h2 { font-size: 1.5em; border-bottom: 1px solid var(--border); padding-bottom: 0.3em; }
.markdown-body h3 { font-size: 1.25em; }
.markdown-body h4 { font-size: 1.1em; color: var(--text-secondary); }
.markdown-body h1 .heading-anchor, .markdown-body h2 .heading-anchor,
.markdown-body h3 .heading-anchor, .markdown-body h4 .heading-anchor {
    position: absolute; left: -1.5em; top: 50%; transform: translateY(-50%);
    font-size: 0.8em; color: var(--text-muted); cursor: pointer;
    opacity: 0; transition: opacity 0.2s; text-decoration: none;
    border-bottom: none !important;
}
.markdown-body h1:hover .heading-anchor, .markdown-body h2:hover .heading-anchor,
.markdown-body h3:hover .heading-anchor, .markdown-body h4:hover .heading-anchor {
    opacity: 0.6;
}
.markdown-body .heading-anchor:hover { opacity: 1 !important; color: var(--accent); }
.markdown-body p { margin-bottom: 1.5em; color: var(--text-secondary); font-size: 1em; }
.markdown-body p.toc-link { margin-bottom: 0.35em; padding-left: 16px; position: relative; }
.markdown-body p.toc-link::before { content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.markdown-body p.toc-link a { font-weight: 500; }
.markdown-body ul, .markdown-body ol { list-style: none; padding-left: 0; margin: 1em 0; }
.markdown-body li { margin-bottom: 0.8em; color: var(--text-secondary); }
.markdown-body li::before { content: '\2022'; color: var(--accent); font-weight: 700; margin-right: 8px; }
.markdown-body blockquote {
    margin: 1.5em 0; padding: 16px 20px;
    border-left: 4px solid var(--accent);
    background: var(--accent-light); border-radius: 0 12px 12px 0;
    color: var(--text-secondary); font-style: italic;
}
.markdown-body hr { border: none; height: 1px; background: var(--border); margin: 2em 0; }
.markdown-body strong { color: var(--text); font-weight: 650; }
.markdown-body a { color: var(--accent); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color 0.2s; }
.markdown-body a:hover { border-bottom-color: var(--accent); }
.markdown-body img { max-width: 100%; height: auto; border-radius: 12px; margin: 1em 0; }
.markdown-body code {
    background: #f0f0f0; padding: 2px 6px; border-radius: 6px;
    font-size: 0.85em; font-weight: 500;
    color: #e45649; border: 1px solid #e8e8e8;
    font-family: 'JetBrains Mono', 'SF Mono', monospace;
}
.markdown-body a code {
    color: var(--accent); border-color: var(--accent-light);
    background: var(--accent-light);
}
.markdown-body pre {
    position: relative;
    background: #fafafa; border: 1px solid var(--border);
    border-radius: 12px; overflow: hidden;
    margin: 1.8em 0;
}
.markdown-body pre::before {
    content: '';
    position: absolute; left: 0; top: 0; bottom: 0;
    width: 1px; background: #d0d0d0;
    z-index: 3; pointer-events: none;
}
.markdown-body pre code {
    display: block;
    background: none;
    font-size: 0.88em; line-height: 1.7;
    overflow-x: auto; white-space: pre;
    tab-size: 4;
    counter-reset: line;
}
.markdown-body pre code.hljs {
    padding: 16px;
    color: #383a42;
    white-space: pre;
    word-wrap: normal;
    overflow-x: auto;
}
.markdown-body pre code .line {
    display: block;
}
.markdown-body pre code .line::before {
    content: none;
}
.markdown-body pre.collapsible {
    transition: background-color 0.2s ease;
}
.markdown-body pre.collapsible code {
    transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}
.markdown-body pre.collapsed code {
    max-height: 5.5rem;
    overflow: hidden;
}
.markdown-body pre.collapsed code::after {
    content: '';
    position: absolute; bottom: 0; left: 0; right: 0;
    height: 2.5rem;
    background: linear-gradient(to bottom, transparent 0%, #fafafa 90%);
    pointer-events: none;
}
[data-theme="dark"] .markdown-body pre.collapsed code::after {
    background: linear-gradient(to bottom, transparent 0%, #1e1e2e 90%);
}
.collapse-btn {
    position: absolute; top: 6px; right: 46px;
    width: 30px; height: 30px;
    border-radius: 8px;
    background: rgba(255,255,255,0.85);
    border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; color: var(--text-muted);
    opacity: 0; transition: all 0.2s; z-index: 5;
}
.markdown-body pre:hover .collapse-btn { opacity: 1; }
.collapse-btn:hover { color: var(--accent); background: #fff; }
.collapse-btn:active { transform: scale(0.9); }
.collapse-btn svg { width: 15px; height: 15px; stroke: currentColor; fill: none; stroke-width: 2; transition: transform 0.3s; }
.markdown-body pre.collapsed .collapse-btn svg { transform: rotate(180deg); }
[data-theme="dark"] .collapse-btn { background: rgba(30,30,46,0.85); border-color: #313244; color: #6c7086; }
[data-theme="dark"] .collapse-btn:hover { color: #cdd6f4; background: #313244; }
.code-lang-tag { display: none; }
.copy-btn {
    position: absolute; top: 6px; right: 6px;
    width: 30px; height: 30px;
    border-radius: 8px;
    background: rgba(255,255,255,0.85);
    border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; color: var(--text-muted);
    opacity: 0; transition: all 0.2s; z-index: 5;
}
.markdown-body pre:hover .copy-btn { opacity: 1; }
.copy-btn:hover { color: var(--accent); background: #fff; }
.copy-btn svg { width: 15px; height: 15px; stroke: currentColor; fill: none; stroke-width: 2; }
.copy-btn.copied { background: var(--accent); color: #fff; border-color: var(--accent); opacity: 1; }
.markdown-body table {
    width: 100%; border-collapse: separate; border-spacing: 0;
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    overflow: hidden; margin: 1.8em 0; table-layout: auto;
}
.markdown-body th, .markdown-body td {
    white-space: nowrap; border-bottom: 1px solid var(--border);
    border-right: 1px solid var(--border); padding: 10px 14px;
    text-align: left; background: var(--surface);
    transition: background 0.2s;
}
.markdown-body tr:hover td { background: var(--accent-light); }
.markdown-body th { background: var(--accent-light); font-weight: 600; border-bottom: 2px solid var(--border); }
.markdown-body tr:last-child td { border-bottom: none; }
.markdown-body td:last-child, .markdown-body th:last-child { border-right: none; }
.table-wrapper { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 1.8em 0; }
.markdown-body img { max-width: 100%; height: auto; border-radius: 8px; }
.prev-next-nav {
    display: flex; align-items: stretch; margin-top: 16px;
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm); overflow: hidden;
}
.prev-next-btn {
    flex: 1; padding: 16px 20px; cursor: pointer;
    display: flex; align-items: center; gap: 12px;
    background: transparent; border: none; color: var(--text);
    font-family: inherit; font-size: 0.95em;
    transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.prev-next-btn:hover { background: var(--accent-light); }
.prev-next-btn.disabled { opacity: 0.4; pointer-events: none; }
.nav-arrow { font-size: 2em; flex-shrink: 0; font-weight: 700; color: var(--accent); }
.nav-text { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; text-align: left; }
.next-btn-wrap .nav-text { text-align: right; }
.prev-divider { width: 1px; background: var(--border); margin: 12px 0; }
.article-bottom-cards {
    display: flex; flex-direction: column; gap: 16px;
    margin-top: 32px; padding-top: 24px;
    border-top: 1px solid var(--border);
}
.markdown-body .article-bottom-cards p { margin-bottom: 0; color: inherit; }
.share-card {
    background: var(--bg); border: 1px solid var(--border);
    border-radius: var(--radius-sm); padding: 20px 24px;
    box-shadow: var(--shadow-sm); display: flex; flex-direction: column; gap: 12px;
    transition: box-shadow 0.25s, border-color 0.25s;
}
.share-card:hover { border-color: var(--accent); box-shadow: 0 4px 16px rgba(0,0,0,0.06); }
.share-card-top { display: flex; align-items: flex-start; gap: 10px; }
.share-card-icon {
    width: 36px; height: 36px; border-radius: 10px;
    background: var(--accent-light); color: var(--accent);
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.share-card-icon svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 2; }
.share-card-title { font-size: 1.05em; font-weight: 650; color: var(--text); }
.share-card-desc { font-size: 0.88em; color: var(--text-secondary); margin-top: 2px; }
.share-card-btn {
    align-self: center; padding: 10px 32px; border-radius: 8px;
    background: var(--accent); color: #fff; border: none;
    font-size: 14px; font-weight: 600; cursor: pointer;
    transition: opacity 0.2s; margin-top: 4px;
}
.share-card-btn:hover { opacity: 0.9; }
.share-modal-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.4);
    z-index: 300; display: none; align-items: center; justify-content: center;
}
.share-modal-overlay.active { display: flex; }
.share-modal {
    background: var(--surface); border-radius: var(--radius);
    padding: 28px; box-shadow: var(--shadow-md);
    display: flex; flex-direction: column; align-items: center; gap: 16px;
    max-width: 320px; width: 90%;
}
.share-modal-title { font-weight: 650; font-size: 1.1em; color: var(--text); }
#shareQrcode canvas { border-radius: 8px; }
[data-theme="dark"] #shareQrcode { padding: 12px; background: #fff; border-radius: 12px; display: inline-block; }
.share-modal-close {
    padding: 8px 24px; border-radius: 8px;
    background: var(--bg); border: 1px solid var(--border);
    color: var(--text-secondary); cursor: pointer; font-size: 14px;
    transition: all 0.2s;
}
.share-modal-close:hover { border-color: var(--accent); color: var(--accent); }
.article-info-card {
    background: var(--bg); border: 1px solid var(--border);
    border-radius: var(--radius-sm); padding: 20px 24px;
    box-shadow: var(--shadow-sm); display: flex; flex-direction: column; gap: 10px;
}
.info-card-title { font-size: 1.05em; font-weight: 650; color: var(--text); margin-bottom: 2px; }
.info-card-url {
    font-size: 0.82em; color: var(--accent); word-break: break-all;
    display: inline-block;
}
.info-card-license a {
    color: var(--accent); text-decoration: none;
}
.info-card-license a:hover { text-decoration: underline; }
.info-card-meta {
    display: flex; gap: 24px; font-size: 0.85em; color: var(--text-secondary);
    margin-top: 4px;
}
.info-card-meta-item { display: flex; flex-direction: column; gap: 2px; }
.info-card-meta-label { font-size: 0.78em; color: var(--text-muted); }
.floating-buttons { position: fixed; right: 20px; bottom: 56px; z-index: 150; display: flex; flex-direction: column; gap: 8px; }
.float-btn {
    width: 35px; height: 35px; border-radius: 10px;
    background: var(--surface); border: 1px solid var(--border); box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    display: flex; align-items: center; justify-content: center; cursor: pointer;
    color: var(--accent); transition: all 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}
.float-btn:hover { background: var(--accent-light); box-shadow: 0 4px 12px rgba(0,0,0,0.1); transform: scale(1.08); }
.float-btn:active { transform: scale(0.94); }
.float-btn svg { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 2; }
.toc-popup {
    position: fixed; right: 20px; bottom: 90px; width: 320px; max-height: 55vh;
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    box-shadow: 0 8px 30px rgba(0,0,0,0.08); z-index: 155; display: flex; flex-direction: column;
    opacity: 0; pointer-events: none; transform: translateY(10px) scale(0.97); transition: opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1), transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.toc-popup.active { opacity: 1; pointer-events: auto; transform: translateY(0); }
.toast {
    position: fixed; bottom: 80px; left: 50%; transform: translateX(-50%) translateY(20px);
    background: var(--text); color: var(--surface); padding: 12px 28px;
    border-radius: 12px; font-size: 0.88em; font-weight: 500;
    box-shadow: 0 8px 30px rgba(0,0,0,0.2); z-index: 500;
    opacity: 0; transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1); pointer-events: none;
    white-space: nowrap;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toc-popup-header { padding: 14px 16px 10px; border-bottom: 1px solid var(--border); }
.toc-popup-title { font-weight: 650; font-size: 15px; color: var(--text); }
.toc-popup-list { flex: 1; overflow-y: auto; padding: 8px; }
.music-popup {
    position: fixed; right: 20px; bottom: 136px; width: 300px;
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    box-shadow: 0 8px 30px rgba(0,0,0,0.08); z-index: 155; display: flex; flex-direction: column;
    opacity: 0; pointer-events: none; transform: translateY(10px) scale(0.95);
    transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1), transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}
.music-lyric-toggle {
    position: absolute; top: 6px; right: 8px; z-index: 10;
    background: none; border: none; cursor: pointer;
    font-size: 12px; color: var(--text-muted); padding: 2px 6px;
    border-radius: 4px; line-height: 1; font-weight: 500;
    transition: color 0.2s, background 0.2s;
}
.music-lyric-toggle:hover { color: var(--accent); background: var(--accent-light); }
.music-lyric-panel { display: none; padding: 0; }
.music-lyric-panel.active { display: block; }
.music-lyric-scroll {
    height: 200px; overflow-y: auto; padding: 0 16px;
    text-align: center; line-height: 2.2; font-size: 13px;
    color: var(--text-muted); scroll-behavior: smooth;
    box-sizing: border-box;
}
.music-lyric-scroll::before,
.music-lyric-scroll::after {
    content: ''; display: block; height: 130px;
}
.music-lyric-scroll::-webkit-scrollbar { width: 3px; }
.music-lyric-scroll::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
.music-lyric-line { transition: color 0.3s, font-size 0.3s; padding: 2px 0; cursor: pointer; }
.music-lyric-line:hover { color: var(--text-secondary); }
.music-lyric-line.active { color: var(--accent); font-size: 15px; font-weight: 600; }
.lyr-trans { font-size: 11px; color: var(--text-muted); line-height: 1.6; font-weight: 400; }
.music-lyric-line.active .lyr-trans { color: var(--text-secondary); }
.lyr-word {
    color: var(--text-muted);
    display: inline;
    will-change: background;
}
.lyr-word.sung { color: var(--accent); }
.lyr-word.filling {
    background: linear-gradient(to right, var(--accent) var(--fill-pct, 0%), var(--text-muted) var(--fill-pct, 0%));
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
}
.music-lyric-hint { padding: 80px 0; color: var(--text-muted); font-size: 13px; }
.music-popup.active { opacity: 1; pointer-events: auto; transform: translateY(0) scale(1); }
.music-player-main { display: flex; gap: 12px; padding: 14px 14px 0; align-items: center; }
.music-disc { flex-shrink: 0; position: relative; width: 64px; height: 64px; }
.disc-ring {
    width: 64px; height: 64px; border-radius: 50%;
    background: conic-gradient(from 0deg, var(--accent-light), var(--bg), var(--accent-light));
    display: flex; align-items: center; justify-content: center;
    position: relative; animation: discSpin 8s linear infinite; animation-play-state: paused;
}
.disc-ring.spinning { animation-play-state: running; }
@keyframes discSpin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
.disc-cover {
    width: 44px; height: 44px; border-radius: 50%;
    object-fit: cover; border: 2px solid var(--surface);
    box-shadow: 0 2px 6px rgba(0,0,0,0.12);
}
.disc-note {
    position: absolute; font-size: 12px; color: var(--accent);
    opacity: 0; animation: noteFloat 2s ease-out infinite;
}
.disc-note:nth-child(2) { color: var(--accent-hover); animation-delay: 0.4s; }
.disc-note:nth-child(3) { color: var(--text-muted); animation-delay: 0.8s; }
@keyframes noteFloat {
    0% { top: 30%; left: 70%; opacity: 0; transform: scale(0.5); }
    30% { opacity: 1; }
    100% { top: -20%; left: 100%; opacity: 0; transform: scale(1.2) rotate(20deg); }
}
.disc-note.paused { animation-play-state: paused; display: none; }
.music-meta { flex: 1; min-width: 0; }
.music-name { font-size: 14px; font-weight: 600; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.music-artist { font-size: 11px; color: var(--text-muted); margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.music-progress-wrap { padding: 10px 14px 0; }
.music-progress-bar {
    width: 100%; height: 3px; background: var(--border); border-radius: 2px;
    cursor: pointer; position: relative; touch-action: none;
}
.music-progress-bar:hover { height: 4px; }
.music-progress-bar:hover .music-progress-dot { opacity: 1; }
.music-progress-bar.dragging { height: 5px; }
.music-progress-bar.dragging .music-progress-dot { opacity: 1; transform: translateY(-50%) scale(1.6); }
.music-progress-fill { height: 100%; background: var(--accent); border-radius: 2px; width: 0%; }
.music-progress-bar:not(:active) .music-progress-fill { transition: width 0.1s; }
.music-progress-dot {
    position: absolute; top: 50%; right: -4px; transform: translateY(-50%);
    width: 8px; height: 8px; border-radius: 50%; background: var(--surface);
    border: 2px solid var(--accent); box-shadow: var(--shadow-sm);
    opacity: 0; transition: opacity 0.2s, transform 0.15s; pointer-events: none;
}
.music-progress-time { display: flex; justify-content: space-between; font-size: 10px; color: var(--text-muted); margin-top: 3px; }
.music-controls {
    display: flex; align-items: center; justify-content: center;
    gap: 16px; padding: 10px 14px 14px;
}
.music-ctrl-btn {
    width: 30px; height: 30px; border-radius: 50%; border: none;
    background: transparent; color: var(--text-secondary); cursor: pointer;
    display: flex; align-items: center; justify-content: center; transition: all 0.15s;
}
.music-ctrl-btn:hover { color: var(--accent); }
.music-ctrl-btn svg { width: 16px; height: 16px; }
.music-play-btn { width: 36px; height: 36px; background: var(--accent); color: #fff; }
.music-play-btn:hover { background: var(--accent-hover); color: #fff; }
.music-play-btn svg { width: 18px; height: 18px; }
.music-mode-btn { color: var(--text-muted); }
.music-mode-btn.active { color: var(--accent); }
.music-list-btn { color: var(--text-muted); }
.music-list-btn.active { color: var(--accent); }
.music-list { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; border-top: 1px solid transparent; }
.music-list.open { max-height: 168px; overflow-y: auto; border-top-color: var(--border); }
.music-loading { text-align: center; padding: 20px; color: var(--text-muted); font-size: 13px; }
.music-loading a { color: var(--accent); text-decoration: none; }
.music-loading a:hover { text-decoration: underline; }
.music-list-header { padding: 6px 12px; font-size: 12px; color: var(--text-muted); border-bottom: 1px solid var(--border); display: none; }
.music-list.open .music-list-header { display: flex; align-items: center; justify-content: space-between; }
.music-popup-count { font-weight: 600; }
.music-platform-tabs { display: flex; gap: 2px; }
.music-platform-tab { padding: 2px 8px; border-radius: 10px; cursor: pointer; transition: all 0.2s; font-size: 11px; color: var(--text-muted); }
.music-platform-tab:hover { background: var(--hover-bg); color: var(--text); }
.music-platform-tab.active { background: var(--accent); color: #fff; }
.music-item {
    display: flex; align-items: center; gap: 10px;
    padding: 8px 14px; cursor: pointer; transition: background 0.15s;
}
.music-item:hover { background: var(--bg); }
.music-item.active { background: var(--accent-light); }
.music-item.active .mi-name { color: var(--accent); font-weight: 600; }
.mi-idx { width: 20px; text-align: center; font-size: 12px; font-weight: 600; color: var(--text-muted); flex-shrink: 0; }
.music-item.active .mi-idx { color: var(--accent); }
.mi-cover { width: 34px; height: 34px; border-radius: 6px; overflow: hidden; flex-shrink: 0; background: var(--bg); }
.mi-cover img { width: 100%; height: 100%; object-fit: cover; }
.mi-info { flex: 1; min-width: 0; }
.mi-name { font-size: 13px; font-weight: 500; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mi-artist { font-size: 11px; color: var(--text-muted); margin-top: 1px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mi-dur { font-size: 11px; color: var(--text-muted); flex-shrink: 0; }
.toc-item { display: flex; align-items: center; gap: 10px; padding: 6px 10px; border-radius: 8px; cursor: pointer; transition: background 0.15s; margin-bottom: 2px; }
.toc-item:hover { background: var(--bg); }
.toc-item.active { background: var(--accent); color: #fff; }
.toc-block { width: 22px; height: 22px; border-radius: 6px; background: var(--accent-light); color: var(--accent); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.toc-block svg { width: 14px; height: 14px; stroke: currentColor; fill: none; }
.toc-item.active .toc-block { background: rgba(255,255,255,0.3); color: #fff; }
.toc-dot-circle { width: 6px; height: 6px; border-radius: 50%; background: var(--text-muted); flex-shrink: 0; }
.toc-item.active .toc-dot-circle { background: #fff; }
.toc-text { flex: 1; font-size: 0.95em; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.toc-item.active .toc-text { color: #fff; }
.dropdown-item {
    display: flex; flex-direction: row !important; align-items: center;
    gap: 10px; padding: 10px 12px; border-radius: 8px; cursor: pointer;
    font-size: 14px; transition: background 0.15s; margin-bottom: 2px;
}
.dropdown-item:hover { background: var(--bg); }
.dropdown-item .file-icon {
    width: 32px; height: 32px; border-radius: 6px;
    background: var(--accent-light); color: var(--accent);
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.dropdown-item .file-icon svg { width: 16px; height: 16px; stroke: currentColor; fill: none; }
.dropdown-item .file-info { flex: 1; min-width: 0; }
.dropdown-item .file-name { font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
@media (min-width: 641px) {
    .doc-card { transition: all 0.25s ease, border-color 0.2s; }
    .doc-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.08); }
    .icon-btn:hover { background: var(--accent-light); }
    .float-btn:hover { transform: scale(1.08); }
    .markdown-body a { transition: color 0.2s, border-color 0.2s; }
    .prev-next-btn:hover .nav-arrow { transform: scale(1.15); }
    .nav-arrow { transition: transform 0.2s; }
    .markdown-body pre { transition: box-shadow 0.2s; }
    .markdown-body pre:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.06); }
    .copy-btn { transition: opacity 0.2s, transform 0.15s; }
    .copy-btn:active { transform: scale(0.9); }
    .markdown-body img { cursor: zoom-in; transition: transform 0.3s ease; }
    .markdown-body img:hover { transform: scale(1.02); }
    .top-bar { transition: transform 0.3s, box-shadow 0.3s; }
    .top-bar.hidden { box-shadow: none; }
}
.img-lightbox {
    position: fixed; inset: 0; z-index: 400;
    background: rgba(0,0,0,0.85); display: none;
    align-items: center; justify-content: center;
    cursor: zoom-out; padding: 40px;
    animation: fadeIn 0.2s ease;
}
.img-lightbox.active { display: flex; }
.img-lightbox img {
    max-width: 95%; max-height: 95%; border-radius: 8px;
    box-shadow: 0 8px 40px rgba(0,0,0,0.3);
    cursor: default;
}
.img-lightbox-close {
    position: absolute; top: 20px; right: 20px;
    width: 40px; height: 40px; border-radius: 50%;
    background: rgba(255,255,255,0.15); border: none;
    color: #fff; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: background 0.2s; z-index: 401;
}
.img-lightbox-close svg { width: 24px; height: 24px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.img-lightbox-close:hover { background: rgba(255,255,255,0.3); }
@media (max-width: 640px) {
    .cards-grid { grid-template-columns: 1fr; gap: 14px; }
    .main-container { padding: 10px 6px 50px; }
    .category-bar { padding: 6px 8px; border-radius: 14px; gap: 4px; }
    .category-bar-item { padding: 4px 9px; font-size: 0.78em; }
    .category-bar-divider { height: 14px; margin: 0 3px; }
    .top-bar { padding: 0 12px; }
    .markdown-body { padding: 16px 10px; }
    .markdown-body pre code.hljs { padding: 12px 10px 12px 0; }
    .markdown-body pre code.hljs { padding: 12px 10px; }
    .collapse-btn { width: 26px; height: 26px; right: 34px; }
    .collapse-btn svg { width: 13px; height: 13px; }
    .floating-buttons { right: 12px; bottom: 48px; }
    .toc-popup { right: 12px; bottom: 70px; width: 280px; }
    .music-popup { right: 12px; bottom: 128px; width: 280px; }
    .prev-next-nav { flex-direction: column; }
    .prev-divider { width: 100%; height: 1px; margin: 0; }
}
[data-theme="dark"] {
    --bg: hsl(var(--accent-hue), 40%, 8%);
    --surface: #161b22;
    --border: #30363d;
    --text: #e6edf3;
    --text-secondary: #b1bac4;
    --text-muted: #8b949e;
    --accent-light: hsl(var(--accent-hue), var(--accent-sat), 18%);
    --code-bg: #0d1117;
    --fixed-icon-bg: #1c2333;
    --fixed-icon-color: #8b949e;
}
[data-theme="dark"] .top-bar {
    background: rgba(22, 27, 34, 0.85);
    backdrop-filter: blur(16px) saturate(1.3);
    -webkit-backdrop-filter: blur(16px) saturate(1.3);
    border-bottom: 1px solid rgba(48, 54, 61, 0.6);
    box-shadow: 0 1px 3px rgba(0,0,0,0.15), 0 0 0 1px rgba(255,255,255,0.03) inset;
}
[data-theme="dark"] .markdown-body pre {
    background: #1e1e2e; border-color: #313244;
}
[data-theme="dark"] .markdown-body pre::before {
    background: #484f58;
}
[data-theme="dark"] .markdown-body pre code,
[data-theme="dark"] .markdown-body pre code.hljs {
    color: #cdd6f4;
}
[data-theme="dark"] .code-lang-tag {
    background: #313244; color: #6c7086;
}
[data-theme="dark"] .copy-btn {
    background: rgba(30,30,46,0.85); border-color: #313244; color: #6c7086;
}
[data-theme="dark"] .copy-btn:hover { color: #cdd6f4; background: #313244; }
[data-theme="dark"] .markdown-body pre code .hljs-keyword { color: #cba6f7; font-weight: 500; }
[data-theme="dark"] .markdown-body pre code .hljs-built_in { color: #f9e2af; }
[data-theme="dark"] .markdown-body pre code .hljs-type { color: #f9e2af; font-weight: 500; }
[data-theme="dark"] .markdown-body pre code .hljs-literal { color: #89dceb; }
[data-theme="dark"] .markdown-body pre code .hljs-number { color: #fab387; }
[data-theme="dark"] .markdown-body pre code .hljs-string { color: #a6e3a1; }
[data-theme="dark"] .markdown-body pre code .hljs-template-string { color: #a6e3a1; }
[data-theme="dark"] .markdown-body pre code .hljs-char.escape_ { color: #89dceb; }
[data-theme="dark"] .markdown-body pre code .hljs-comment { color: #6c7086; font-style: italic; }
[data-theme="dark"] .markdown-body pre code .hljs-doctag { color: #cba6f7; }
[data-theme="dark"] .markdown-body pre code .hljs-function { color: #89b4fa; }
[data-theme="dark"] .markdown-body pre code .hljs-title { color: #89b4fa; }
[data-theme="dark"] .markdown-body pre code .hljs-title.class_ { color: #f9e2af; }
[data-theme="dark"] .markdown-body pre code .hljs-title.function_ { color: #89b4fa; }
[data-theme="dark"] .markdown-body pre code .hljs-params { color: #cdd6f4; }
[data-theme="dark"] .markdown-body pre code .hljs-variable { color: #f38ba8; }
[data-theme="dark"] .markdown-body pre code .hljs-template_variable { color: #f38ba8; }
[data-theme="dark"] .markdown-body pre code .hljs-attr { color: #fab387; }
[data-theme="dark"] .markdown-body pre code .hljs-attribute { color: #a6e3a1; }
[data-theme="dark"] .markdown-body pre code .hljs-symbol { color: #89dceb; }
[data-theme="dark"] .markdown-body pre code .hljs-meta { color: #89dceb; }
[data-theme="dark"] .markdown-body pre code .hljs-selector-tag { color: #f38ba8; }
[data-theme="dark"] .markdown-body pre code .hljs-selector-class { color: #f9e2af; }
[data-theme="dark"] .markdown-body pre code .hljs-selector-id { color: #89b4fa; }
[data-theme="dark"] .markdown-body pre code .hljs-tag { color: #a6e3a1; }
[data-theme="dark"] .markdown-body pre code .hljs-name { color: #a6e3a1; }
[data-theme="dark"] .markdown-body pre code .hljs-addition { color: #a6e3a1; background: #1e3a1e; }
[data-theme="dark"] .markdown-body pre code .hljs-deletion { color: #f38ba8; background: #3a1e1e; }
[data-theme="dark"] .markdown-body pre code .hljs-emphasis { font-style: italic; }
[data-theme="dark"] .markdown-body pre code .hljs-strong { font-weight: 700; }
[data-theme="dark"] .markdown-body pre code .hljs-link { color: #89dceb; text-decoration: underline; }
[data-theme="dark"] .markdown-body pre code .hljs-regexp { color: #fab387; }
[data-theme="dark"] .markdown-body pre code .hljs-property { color: #f38ba8; }
[data-theme="dark"] .markdown-body pre code .hljs-operator { color: #cba6f7; }
[data-theme="dark"] .markdown-body pre code .hljs-punctuation { color: #cdd6f4; }
[data-theme="dark"] .markdown-body code {
    background: #313244; border-color: #45475a;
    color: #f38ba8;
}
[data-theme="dark"] .markdown-body a code {
    color: #89b4fa; border-color: #45475a; background: #1e1e2e;
}
[data-theme="dark"] .doc-card:hover { border-color: hsl(var(--accent-hue), var(--accent-sat), 40%); }
[data-theme="dark"] .float-btn:hover { background: #161b22; }
[data-theme="dark"] .share-card,
[data-theme="dark"] .article-info-card { background: #0d1117; }
[data-theme="dark"] .prev-next-nav { background: #161b22; }
[data-theme="dark"] .markdown-body blockquote { background: #1e1e2e; }
[data-theme="dark"] .hue-slider { border-color: #30363d; }
[data-theme="dark"] .sidebar { background: #0d1117; border-right-color: #21262d; }
[data-theme="dark"] .sidebar-item:hover { background: #161b22; }
[data-theme="dark"] .sidebar-back-btn:hover { background: #161b22; }
[data-theme="dark"] .sidebar-toc-list .toc-item:hover { background: #161b22; }
[data-theme="dark"] .sidebar-toc-list .toc-item.active { background: rgba(var(--accent-hue), var(--accent-sat), 20%); border-left-color: var(--accent); }
[data-theme="dark"] .heading-anchor { color: #484f58; }
[data-theme="dark"] .heading-anchor:hover { color: var(--accent); }
[data-theme="dark"] body.bg-active::before {
    filter: brightness(0.55) saturate(0.8);
    -webkit-filter: brightness(0.55) saturate(0.8);
}
.doc-card,
.markdown-body,
.comment-section,
.cmt-input-box,
.prev-next-nav,
.share-card,
.article-info-card,
.cmt-capsule-btn,
.cmt-user-inner {
    transition: background 0.3s;
}
body.bg-active { background: none; }
body.bg-active::before {
    content: '';
    position: fixed;
    top: -10px; left: -10px; right: -10px; bottom: -10px;
    z-index: -1;
    background-image: var(--bg-url);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}
body.bg-blur::before {
    filter: blur(var(--bg-blur-level, 0px));
    -webkit-filter: blur(var(--bg-blur-level, 0px));
}
body:not(.bg-blur) .doc-card,
body:not(.bg-blur) .markdown-body,
body:not(.bg-blur) .comment-section,
body:not(.bg-blur) .cmt-input-box,
body:not(.bg-blur) .prev-next-nav,
body:not(.bg-blur) .share-card,
body:not(.bg-blur) .article-info-card,
body:not(.bg-blur) .cmt-capsule-btn,
body:not(.bg-blur) .cmt-user-inner {
    background: rgba(255, 255, 255, var(--bg-card-opacity, 1));
}
[data-theme="dark"] body:not(.bg-blur) .doc-card,
[data-theme="dark"] body:not(.bg-blur) .markdown-body,
[data-theme="dark"] body:not(.bg-blur) .comment-section,
[data-theme="dark"] body:not(.bg-blur) .cmt-input-box,
[data-theme="dark"] body:not(.bg-blur) .prev-next-nav,
[data-theme="dark"] body:not(.bg-blur) .share-card,
[data-theme="dark"] body:not(.bg-blur) .article-info-card,
[data-theme="dark"] body:not(.bg-blur) .cmt-capsule-btn,
[data-theme="dark"] body:not(.bg-blur) .cmt-user-inner {
    background: rgba(22, 27, 34, var(--bg-card-opacity, 1));
}
body.bg-blur .doc-card,
body.bg-blur .markdown-body,
body.bg-blur .comment-section,
body.bg-blur .cmt-input-box,
body.bg-blur .prev-next-nav,
body.bg-blur .share-card,
body.bg-blur .article-info-card,
body.bg-blur .cmt-capsule-btn,
body.bg-blur .cmt-user-inner {
    background: rgba(255, 255, 255, var(--bg-card-opacity, 0.8));
}
body.bg-blur .doc-card:hover {
    background: rgba(255, 255, 255, calc(var(--bg-card-opacity, 0.8) + 0.05));
}
[data-theme="dark"] body.bg-blur .doc-card,
[data-theme="dark"] body.bg-blur .markdown-body,
[data-theme="dark"] body.bg-blur .comment-section,
[data-theme="dark"] body.bg-blur .cmt-input-box,
[data-theme="dark"] body.bg-blur .prev-next-nav,
[data-theme="dark"] body.bg-blur .share-card,
[data-theme="dark"] body.bg-blur .article-info-card,
[data-theme="dark"] body.bg-blur .cmt-capsule-btn,
[data-theme="dark"] body.bg-blur .cmt-user-inner {
    background: rgba(22, 27, 34, var(--bg-card-opacity, 0.8));
}
[data-theme="dark"] body.bg-blur .doc-card:hover {
    background: rgba(22, 27, 34, calc(var(--bg-card-opacity, 0.8) + 0.05));
}
body.bg-blur .top-bar {
    backdrop-filter: blur(var(--bg-blur-level, 0px));
    -webkit-backdrop-filter: blur(var(--bg-blur-level, 0px));
    background: rgba(255, 255, 255, 0.9);
}
[data-theme="dark"] body.bg-blur .top-bar {
    background: rgba(22, 27, 34, 0.92);
}
body.bg-blur .category-bar {
    backdrop-filter: blur(var(--bg-blur-level, 0px));
    -webkit-backdrop-filter: blur(var(--bg-blur-level, 0px));
    background: rgba(255, 255, 255, var(--bg-card-opacity, 0.8));
}
[data-theme="dark"] body.bg-blur .category-bar {
    background: rgba(22, 27, 34, var(--bg-card-opacity, 0.8));
}
body.bg-blur .sidebar {
    backdrop-filter: blur(var(--bg-blur-level, 0px));
    -webkit-backdrop-filter: blur(var(--bg-blur-level, 0px));
    background: rgba(255, 255, 255, 0.9);
}
[data-theme="dark"] body.bg-blur .sidebar {
    background: rgba(13, 17, 23, 0.92);
}
.comment-section {
    margin-top: 16px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.02);
}
.cmt-input-section {
    margin-top: 16px;
}
.cmt-capsule-section {
    margin-top: 24px;
}
.cmt-capsule-bar { margin-bottom: 16px; }
.cmt-capsule-btn, .cmt-user-inner {
    display: flex; align-items: center; gap: 10px;
    width: 100%; padding: 10px 16px;
    border: 1px solid var(--border); border-radius: 50px;
    background: var(--surface); color: var(--text);
    font-size: 14px; cursor: pointer; font-family: inherit;
    transition: all 0.2s; box-shadow: var(--shadow);
}
.cmt-capsule-btn:hover, .cmt-user-inner:hover { border-color: var(--accent); }
.cmt-capsule-icon {
    width: 28px; height: 28px; border-radius: 50%;
    background: var(--accent-light); color: var(--accent);
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.cmt-capsule-icon svg { width: 15px; height: 15px; stroke: currentColor; fill: none; stroke-width: 2; }
.cmt-capsule-text { color: var(--text-muted); font-size: 13px; }
.cmt-user-bar { margin-bottom: 16px; }
.cmt-user-inner { cursor: pointer; }
.cmt-user-avatar {
    width: 28px; height: 28px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 12px; font-weight: 700; flex-shrink: 0; background: #8b95a5;
    overflow: hidden;
}
[data-theme="dark"] .cmt-user-avatar { background: #6b7280; }
.cmt-user-greeting { font-size: 13px; color: var(--text); flex: 1; }
.cmt-logout-btn {
    width: 28px; height: 28px; border-radius: 50%;
    border: none; background: rgba(0,0,0,0.05); color: var(--text-muted);
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; transition: all 0.15s; flex-shrink: 0;
}
[data-theme="dark"] .cmt-logout-btn { background: rgba(255,255,255,0.08); }
.cmt-logout-btn:hover { background: #fef2f2; color: #ef4444; }
[data-theme="dark"] .cmt-logout-btn:hover { background: #3a1e1e; }
.cmt-logout-btn svg { width: 13px; height: 13px; stroke: currentColor; fill: none; stroke-width: 2; }
.cmt-input-box {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 14px; overflow: hidden; margin-bottom: 16px; box-shadow: var(--shadow);
}
.cmt-input-box textarea {
    width: 100%; min-height: 72px; padding: 12px 16px 8px;
    border: none; background: transparent; color: var(--text);
    font-size: 14px; font-family: inherit; line-height: 1.6; resize: none; outline: none;
}
.cmt-input-box textarea::placeholder { color: var(--text-muted); }
.cmt-input-box textarea:disabled { opacity: 0.5; cursor: not-allowed; }
.cmt-input-divider { height: 1px; background: var(--border); margin: 0 16px; }
.cmt-input-bottom { display: flex; align-items: center; justify-content: flex-end; padding: 8px 12px; }
.cmt-send-btn {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 6px 16px; border: none; border-radius: 50px;
    background: var(--text-muted); color: #fff; font-size: 12px;
    font-weight: 600; cursor: pointer; font-family: inherit; transition: all 0.2s;
}
.cmt-send-btn.has-content { background: var(--accent); }
.cmt-send-btn.has-content:hover { opacity: 0.85; }
.cmt-send-btn svg { width: 13px; height: 13px; stroke: currentColor; fill: none; stroke-width: 2; }
.cmt-list { display: flex; flex-direction: column; }
.cmt-item { padding: 14px 14px; margin: 0 -14px; border-radius: 10px; transition: background 0.2s; }
.cmt-item:hover { background: var(--bg); }
.cmt-item + .cmt-item { border-top: 1px solid var(--border); }
.cmt-item:first-child { padding-top: 0; margin-top: 0; }
.cmt-top { display: flex; gap: 8px; }
.cmt-top.cmt-no-sign { align-items: center; }
.cmt-avatar {
    width: 28px; height: 28px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; overflow: hidden; position: relative;
}
.cmt-avatar-img { width: 100%; height: 100%; object-fit: cover; border-radius: 50%; }
.cmt-avatar-text {
    width: 100%; height: 100%; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 11px; font-weight: 700; background: #8b95a5;
}
[data-theme="dark"] .cmt-avatar-text { background: #6b7280; }
.cmt-info { flex: 1; min-width: 0; margin-top: -4px; }
.cmt-name-row { display: flex; align-items: center; gap: 8px; }
.cmt-name { font-size: 13px; font-weight: 600; color: var(--text); }
.cmt-time { font-size: 11px; color: var(--text-muted); margin-left: auto; flex-shrink: 0; }
.cmt-sign { font-size: 11px; color: var(--text-muted); margin-top: 1px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cmt-text { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-top: 6px; white-space: pre-wrap; word-break: break-word; }
.cmt-actions { display: flex; align-items: center; gap: 16px; margin-top: 8px; }
.cmt-act {
    display: inline-flex; align-items: center; gap: 4px;
    font-size: 12px; color: var(--text-muted); cursor: pointer;
    background: none; border: none; font-family: inherit; transition: color 0.15s; padding: 2px 0;
}
.cmt-act:hover { color: var(--accent); }
.cmt-act.liked { color: #ef4444; }
.cmt-act svg { width: 13px; height: 13px; stroke: currentColor; fill: none; stroke-width: 2; }
.cmt-act.liked svg { fill: #ef4444; stroke: #ef4444; }
.cmt-reply-expand {
    display: inline-flex; align-items: center; gap: 4px;
    font-size: 12px; color: var(--accent); cursor: pointer;
    background: none; border: none; font-family: inherit;
    margin-left: auto; transition: color 0.15s;
}
.cmt-reply-expand svg { width: 12px; height: 12px; stroke: currentColor; fill: none; stroke-width: 2; transition: transform 0.2s; }
.cmt-reply-expand.open svg { transform: rotate(180deg); }
.cmt-reply-list { margin: 8px 0 0; display: none; padding: 4px 0; background: var(--surface); border-radius: 0 0 14px 14px; }
.cmt-reply-list.show { display: block; }
.cmt-reply-item { padding: 10px 12px; margin: 0 -12px; border-radius: 8px; transition: background 0.2s; }
.cmt-reply-item:hover { background: var(--bg); }
.cmt-reply-item + .cmt-reply-item { border-top: 1px solid var(--border); }
.cmt-reply-top { display: flex; gap: 8px; margin-bottom: 4px; }
.cmt-reply-avatar {
    width: 28px; height: 28px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; overflow: hidden; position: relative;
}
.cmt-reply-avatar .cmt-avatar-img { width: 100%; height: 100%; object-fit: cover; border-radius: 50%; }
.cmt-reply-avatar .cmt-avatar-text {
    width: 100%; height: 100%; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 11px; font-weight: 700; background: #8b95a5;
}
[data-theme="dark"] .cmt-reply-avatar .cmt-avatar-text { background: #6b7280; }
.cmt-reply-info { flex: 1; min-width: 0; }
.cmt-reply-name-row { display: flex; align-items: center; gap: 8px; }
.cmt-reply-name { font-size: 13px; font-weight: 600; color: var(--text); }
.cmt-reply-time { font-size: 11px; color: var(--text-muted); margin-left: auto; flex-shrink: 0; }
.cmt-reply-text { font-size: 14px; color: var(--text-secondary); line-height: 1.7; white-space: pre-wrap; word-break: break-word; padding-left: 33px; }
.cmt-reply-actions { display: flex; align-items: center; gap: 16px; margin-top: 8px; padding-left: 33px; }
.cmt-reply-act {
    display: inline-flex; align-items: center; gap: 4px;
    font-size: 11px; color: var(--text-muted); cursor: pointer;
    background: none; border: none; font-family: inherit; transition: color 0.15s; padding: 1px 0;
}
.cmt-reply-act:hover { color: var(--accent); }
.cmt-reply-act.liked { color: #ef4444; }
.cmt-reply-act svg { width: 12px; height: 12px; stroke: currentColor; fill: none; stroke-width: 2; }
.cmt-reply-act.liked svg { fill: #ef4444; stroke: #ef4444; }
.cmt-del-btn { color: #ef4444; }
.cmt-del-btn svg { stroke: #ef4444; }
.cmt-del-btn:hover { opacity: 0.7; }
.cmt-reply-nested { margin: 0; padding-left: 12px; }
.cmt-reply-nested .cmt-reply-item { padding-left: 0; }
.cmt-reply-nested .cmt-reply-nested { padding-left: 0; }
.cmt-reply-arrow { font-size: 10px; color: var(--text-muted); margin: 0 4px; }
.cmt-reply-to { font-size: 12px; color: #60a5fa; }
.cmt-reply-input-wrap {
    display: none; margin: 8px 0 0; border: 1px solid var(--border); border-radius: 10px;
    overflow: hidden; background: var(--surface);
}
.cmt-reply-input-wrap.show { display: block; }
.cmt-reply-input-wrap textarea {
    width: 100%; min-height: 50px; padding: 10px 14px;
    border: none; background: transparent; color: var(--text);
    font-size: 13px; font-family: inherit; resize: none; outline: none;
}
.cmt-reply-input-wrap textarea::placeholder { color: var(--text-muted); }
.cmt-reply-input-bottom {
    display: flex; align-items: center; justify-content: flex-end;
    padding: 6px 10px; border-top: 1px solid var(--border);
}
.cmt-reply-send-btn {
    padding: 5px 14px; border: none; border-radius: 50px;
    background: var(--text-muted); color: #fff; font-size: 12px;
    font-weight: 600; cursor: pointer; font-family: inherit; transition: all 0.15s;
}
.cmt-reply-send-btn.has-content { background: var(--accent); }
.cmt-empty { text-align: center; padding: 24px 0; color: var(--text-muted); font-size: 13px; }
.cmt-empty svg { width: 32px; height: 32px; stroke: var(--border); fill: none; stroke-width: 1.5; margin: 0 auto 8px; display: block; }
.cmt-modal-mask {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 500; display: none; align-items: center; justify-content: center;
    padding: 16px;
    backdrop-filter: blur(8px) saturate(1.2);
    -webkit-backdrop-filter: blur(8px) saturate(1.2);
}
.cmt-modal-mask.show { display: flex; }
.cmt-modal-box {
    position: relative;
    background: var(--surface);
    border-radius: 24px;
    width: 380px; max-width: 100%; overflow: hidden;
    box-shadow: 0 24px 64px rgba(0,0,0,0.18), 0 0 0 1px rgba(255,255,255,0.04) inset;
    animation: cmtModalIn 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.cmt-modal-box::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(ellipse at 30% 0%, hsla(var(--accent-hue), var(--accent-sat), 50%, 0.04) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 100%, hsla(calc(var(--accent-hue) + 40), var(--accent-sat), 50%, 0.03) 0%, transparent 60%);
    pointer-events: none;
    animation: modalBgShift 8s ease-in-out infinite alternate;
}
@keyframes modalBgShift {
    0% { transform: translate(0, 0) rotate(0deg); }
    100% { transform: translate(1%, 1%) rotate(2deg); }
}
[data-theme="dark"] .cmt-modal-box {
    background: linear-gradient(145deg, #1e1e2a 0%, #1a1a24 100%);
    box-shadow: 0 24px 64px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.03) inset;
}
@keyframes cmtModalIn {
    from { opacity: 0; transform: scale(0.92) translateY(16px) rotateX(2deg); }
    to { opacity: 1; transform: scale(1) translateY(0) rotateX(0); }
}
.cmt-modal-head {
    position: relative;
    padding: 32px 28px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}
.cmt-modal-head::before {
    content: '';
    position: absolute;
    top: 24px; left: 28px;
    width: 36px; height: 36px;
    border-radius: 12px;
    background: var(--accent-light);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
}
.cmt-modal-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.01em;
}
.cmt-modal-body {
    position: relative;
    padding: 22px 28px 24px;
}
.cmt-modal-switch {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 0 28px 28px;
    font-size: 13px;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
    margin: 0 28px 0;
    padding: 18px 0 24px;
}
.cmt-modal-switch-link {
    color: var(--accent);
    cursor: pointer;
    font-weight: 600;
    background: none;
    border: none;
    font-family: inherit;
    font-size: 13px;
    padding: 2px 6px;
    border-radius: 6px;
    transition: all 0.2s;
}
.cmt-modal-switch-link:hover {
    background: var(--accent-light);
    color: var(--accent-hover);
}
.cmt-modal-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.cmt-modal-input {
    width: 100%; padding: 14px 16px;
    border: 1.5px solid var(--border); border-radius: 14px;
    background: var(--surface); color: var(--text); font-size: 15px;
    font-family: inherit; outline: none;
    transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}
[data-theme="dark"] .cmt-modal-input { background: #141414; }
.cmt-modal-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px hsla(var(--accent-hue), var(--accent-sat), 50%, 0.12), 0 0 16px hsla(var(--accent-hue), var(--accent-sat), 50%, 0.08);
    transform: scale(1.01);
}
.cmt-modal-input::placeholder { color: var(--text-muted); font-size: 14px; }
.cmt-modal-err {
    font-size: 12px;
    color: #ef4444;
    min-height: 16px;
    padding: 6px 10px;
    background: rgba(239,68,68,0.06);
    border-radius: 8px;
    display: none;
    align-items: center;
    gap: 6px;
}
.cmt-modal-err:not(:empty) {
    display: flex;
    animation: shake 0.4s ease;
}
.cmt-modal-submit {
    width: 100%; padding: 14px;
    border: none; border-radius: 14px;
    background: linear-gradient(135deg, var(--accent), hsl(calc(var(--accent-hue) + 15), var(--accent-sat), 45%));
    color: #fff;
    font-size: 15px; font-weight: 700;
    cursor: pointer; font-family: inherit;
    transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.02em;
}
.cmt-modal-submit::after {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.12), transparent);
    transition: left 0.6s;
}
.cmt-modal-submit:hover::after { left: 100%; }
.cmt-modal-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px hsla(var(--accent-hue), var(--accent-sat), 50%, 0.3);
}
.cmt-modal-submit:active { transform: scale(0.97); }
.cmt-auth-slide { position: relative; }
.cmt-auth-slide > .cmt-modal-form { transition: opacity 0.25s ease, transform 0.25s ease; }
.cmt-auth-slide.slide-out > .cmt-modal-form { opacity: 0; transform: translateX(-24px) scale(0.97); }
.cmt-auth-slide.slide-in > .cmt-modal-form { animation: cmtSlideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
@keyframes cmtSlideIn { from { opacity: 0; transform: translateX(24px) scale(0.97); } to { opacity: 1; transform: none; } }
.cmt-confirm-overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 700; display: none; align-items: center; justify-content: center; padding: 16px;
    backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
}
.cmt-confirm-overlay.show { display: flex; }
.cmt-confirm-box {
    background: var(--surface);
    border-radius: 20px; padding: 32px 28px 28px;
    max-width: 320px; width: 100%; text-align: center;
    box-shadow: 0 16px 48px rgba(0,0,0,0.15);
    animation: cmtConfirmIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
[data-theme="dark"] .cmt-confirm-box { background: #1e1e2a; }
@keyframes cmtConfirmIn {
    from { opacity: 0; transform: scale(0.9) translateY(12px); }
    to { opacity: 1; transform: none; }
}
.cmt-confirm-box h3 { font-size: 18px; margin-bottom: 8px; color: var(--text); font-weight: 700; }
.cmt-confirm-box p { font-size: 14px; color: var(--text-secondary); margin-bottom: 24px; line-height: 1.5; }
.cmt-confirm-actions { display: flex; gap: 12px; justify-content: center; }
.cmt-confirm-cancel {
    padding: 11px 28px; border: 1px solid var(--border); border-radius: 12px;
    background: var(--surface); color: var(--text-secondary); font-size: 14px;
    cursor: pointer; font-family: inherit; font-weight: 500;
    transition: all 0.2s;
}
.cmt-confirm-cancel:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-light); }
.cmt-confirm-ok {
    padding: 11px 28px; border: none; border-radius: 12px;
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: #fff; font-size: 14px; font-weight: 600;
    cursor: pointer; font-family: inherit;
    transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.cmt-confirm-ok:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(239,68,68,0.3); }
.cmt-confirm-ok:active { transform: scale(0.97); }
@media (max-width: 640px) {
    .comment-section { padding: 14px; }
    .cmt-sign { max-width: 200px; }
    .cmt-reply-sign { max-width: 200px; }
    .img-lightbox-prev, .img-lightbox-next { width: 40px; height: 40px; }
    .img-lightbox-prev svg, .img-lightbox-next svg { width: 20px; height: 20px; }
    .img-lightbox-close { width: 36px; height: 36px; top: 12px; right: 12px; }
    .img-lightbox-close svg { width: 20px; height: 20px; }
}
@media (max-width: 1024px) {
    #btnKbdHelp { display: none !important; }
    .reading-progress-text { display: none !important; }
    .kbd-help-overlay { display: none !important; }
    .sidebar-header .icon-btn { display: none !important; }
    .sidebar-restore-btn { display: none !important; }
}
@media print {
    .top-bar, .sidebar, .floating-buttons, .toc-popup, .music-popup, .reading-progress,
    .share-modal-overlay, .img-lightbox, .cmt-capsule-section, .cmt-input-section,
    .comment-section, .prev-next-nav, .article-bottom-cards, .toast,
    .sidebar-resize, .sidebar-restore-btn, .kbd-help-overlay { display: none !important; }
    body { padding-left: 0 !important; background: #fff !important; }
    .main-container { max-width: 100% !important; padding: 0 !important; }
    .markdown-body { box-shadow: none !important; border-radius: 0 !important; padding: 20px 0 !important; }
    .markdown-body pre { break-inside: avoid; }
    .markdown-body img { max-width: 100% !important; }
}
.kbd-help-overlay {
    position: fixed; inset: 0; z-index: 600;
    background: rgba(0,0,0,0.5); display: none;
    align-items: center; justify-content: center;
    padding: 20px; backdrop-filter: blur(4px);
}
.kbd-help-overlay.show { display: flex; }
.kbd-help-box {
    background: var(--surface); border-radius: 16px;
    padding: 32px; max-width: 520px; width: 100%;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
    max-height: 80vh; overflow-y: auto;
}
.kbd-help-title { font-size: 1.2em; font-weight: 700; margin-bottom: 20px; display: flex; align-items: center; gap: 10px; }
.kbd-help-title svg { width: 22px; height: 22px; stroke: var(--accent); fill: none; stroke-width: 2; }
.kbd-help-section { margin-bottom: 16px; }
.kbd-help-section h4 { font-size: 0.85em; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 8px; }
.kbd-row { display: flex; align-items: center; justify-content: space-between; padding: 6px 0; }
.kbd-label { font-size: 0.9em; color: var(--text-secondary); }
.kbd-keys { display: flex; gap: 4px; }
kbd {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 28px; height: 26px; padding: 0 8px;
    background: var(--bg); border: 1px solid var(--border);
    border-radius: 6px; font-size: 12px; font-weight: 600;
    color: var(--text-secondary); font-family: inherit;
    box-shadow: 0 1px 2px rgba(0,0,0,0.06);
}
[data-theme="dark"] kbd { background: #21262d; border-color: #30363d; }
.img-lightbox-prev, .img-lightbox-next {
    position: absolute; top: 50%; transform: translateY(-50%);
    width: 48px; height: 48px; border-radius: 50%;
    background: rgba(255,255,255,0.15); border: none;
    color: #fff; cursor: pointer; display: flex;
    align-items: center; justify-content: center;
    transition: background 0.2s; z-index: 402;
}
.img-lightbox-prev { left: 20px; }
.img-lightbox-next { right: 80px; }
.img-lightbox-prev:hover, .img-lightbox-next:hover { background: rgba(255,255,255,0.3); }
.img-lightbox-prev svg, .img-lightbox-next svg { width: 24px; height: 24px; stroke: currentColor; fill: none; stroke-width: 2; }
.doc-card.preloading { opacity: 0.7; }
.doc-card .preload-indicator {
    position: absolute; top: 8px; right: 8px;
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--accent); animation: pulse 1s infinite;
}
@keyframes pulse { 0%,100% { opacity: 0.4; } 50% { opacity: 1; } }
.doc-card { position: relative; }
.reading-progress-text {
    position: fixed; top: 4px; right: 12px;
    font-size: 11px; font-weight: 500; color: var(--text-muted);
    z-index: 201; pointer-events: none; opacity: 0;
    transition: opacity 0.2s; background: var(--surface);
    padding: 1px 8px; border-radius: 10px; border: 1px solid var(--border);
}
.reading-progress-text.active { opacity: 1; }
@media (min-width: 1025px) {
    .reading-progress-text { right: 292px; }
}
/* 禁用文字选中（特定 UI 元素） */
.icon-btn, .float-btn, .category-bar-item, .doc-card, .sidebar-item,
.toc-item, .dropdown-item, .cmt-capsule-btn, .cmt-user-inner,
.prev-next-btn, .tag, .share-card-btn, .cmt-modal-switch-link {
    -webkit-user-select: none; user-select: none;
}

/* ================================================================
   用户功能按钮 + 下拉菜单
   ================================================================ */
.user-dropdown {
    position: fixed;
    top: calc(var(--header-height, 56px) + 6px);
    right: 12px;
    width: 240px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.12), 0 2px 8px rgba(0,0,0,0.06);
    z-index: 300;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px) scale(0.96);
    transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
    overflow: hidden;
}
.user-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}
[data-theme="dark"] .user-dropdown {
    background: #1c2128;
    border-color: #30363d;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
.user-dropdown-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 18px;
    cursor: default;
}
.user-dropdown-avatar {
    width: 38px; height: 38px;
    border-radius: 50%;
    background: #e8ecf0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    color: #6b7a99;
    flex-shrink: 0;
    overflow: hidden;
}
[data-theme="dark"] .user-dropdown-avatar {
    background: #2d333b;
    color: #8b949e;
}
.user-dropdown-avatar img {
    width: 100%; height: 100%;
    object-fit: cover;
}
.user-dropdown-info {
    flex: 1;
    min-width: 0;
}
.user-dropdown-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.user-dropdown-role {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 1px;
}
.user-dropdown-divider {
    height: 1px;
    background: var(--border);
    margin: 0 12px;
}
[data-theme="dark"] .user-dropdown-divider {
    background: #30363d;
}
.user-dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 18px;
    cursor: pointer;
    font-size: 13.5px;
    color: var(--text-secondary);
    transition: all 0.15s;
}
.user-dropdown-item:hover {
    background: var(--accent-light);
    color: var(--accent);
}
[data-theme="dark"] .user-dropdown-item:hover {
    background: hsla(var(--accent-hue), var(--accent-sat), 30%, 0.15);
}
.user-dropdown-item svg {
    width: 18px; height: 18px;
    stroke: currentColor; fill: none; stroke-width: 2;
    flex-shrink: 0;
    opacity: 0.7;
}
.user-dropdown-item:hover svg {
    opacity: 1;
}
.user-dropdown-item-danger {
    color: #ef4444;
}
.user-dropdown-item-danger:hover {
    background: #fef2f2 !important;
    color: #dc2626 !important;
}
[data-theme="dark"] .user-dropdown-item-danger:hover {
    background: #3a1e1e !important;
    color: #fca5a5 !important;
}
@media (max-width: 640px) {
    .user-dropdown {
        right: 8px;
        width: 220px;
    }
}

/* ============================================================
   移动端适配完善（v2.8.0 同次：评论输入 / 触控目标 / 下拉）
   前台主页 index.php；与现有响应式同一设计语言
   ============================================================ */
@media (max-width: 640px) {
    /* 评论输入控件：16px 防 iOS 聚焦缩放 + 44px 触控 */
    .cmt-input-box textarea,
    .cmt-input-box input,
    .cmt-input-box .cmt-msg-input {
        font-size: 16px;
        padding: 12px 14px;
    }
    .cmt-capsule-btn { min-height: 44px; padding: 10px 18px; }
    .cmt-user-inner { min-height: 44px; }

    /* 顶栏图标触控目标 */
    .top-bar .icon-btn { width: 40px; height: 40px; }

    /* 下拉面板窄屏内边距 */
    .dropdown-panel { max-height: 70vh; }

    /* 正文行高与字号微调（手机可读性） */
    .markdown-body { font-size: 15.5px; line-height: 1.75; }
}

/* ============================================================
   v2.9.0 注册验证：邮箱验证码 + 滑块人机验证
   与既有设计语言一致（CSS 变量 / 圆角 / 品牌色 / 44px 触控）
   ============================================================ */
.cmt-reg-verify {
    margin-top: 2px;
    padding: 14px 14px 16px;
    background: var(--accent-light);
    border: 1px solid var(--border);
    border-radius: 16px;
    flex-direction: column;
    gap: 12px;
}
.cmt-reg-email-row { display: flex; gap: 8px; }
.cmt-reg-email-row .cmt-modal-input { flex: 1; min-width: 0; }
/* v2.10.2：注册表单统一设计——分组标题（分隔线）+ 验证区浅色内嵌分层 */
.cmt-sec-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-top: 4px;
}
.cmt-sec-title:first-child { margin-top: 0; }
.cmt-sec-title::after { content: ''; flex: 1; height: 1px; background: var(--border); }
.cmt-reg-form { gap: 12px; }
.cmt-reg-form .cmt-modal-submit { margin-top: 2px; }
.cmt-reg-verify .cmt-sec-title::after { background: hsla(var(--accent-hue), var(--accent-sat), 50%, 0.16); }
.cmt-code-btn {
    flex: 0 0 auto;
    min-height: 44px;
    padding: 0 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--accent-light);
    color: var(--accent);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    font-family: inherit;
}
.cmt-code-btn:hover:not(:disabled) { filter: brightness(0.97); }
.cmt-code-btn:disabled { opacity: 0.55; cursor: not-allowed; }
/* ===== v2.10.0：编辑资料弹窗扩展（头像自定义 / 邮箱绑定更换） ===== */
.cmt-profile-avatar-row { display: flex; align-items: center; gap: 14px; margin-bottom: 12px; }
.cmt-profile-avatar {
    width: 64px; height: 64px;
    flex: 0 0 64px;
    border-radius: 50%;
    overflow: hidden;
    display: flex; align-items: center; justify-content: center;
    background: var(--accent-light);
    color: var(--accent);
    font-size: 26px; font-weight: 700;
    border: 2px solid var(--border);
}
.cmt-profile-avatar img { width: 100%; height: 100%; object-fit: cover; border-radius: 50%; }
.cmt-profile-avatar-side { display: flex; flex-direction: column; gap: 6px; flex: 1; }
.cmt-avatar-btn {
    display: inline-flex; align-items: center; justify-content: center;
    width: fit-content;
    min-height: 38px; padding: 0 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--accent-light);
    color: var(--accent);
    font-size: 13px; font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
}
.cmt-avatar-btn:hover { filter: brightness(0.97); }
.cmt-profile-avatar-tip { font-size: 12px; color: var(--text-muted); }
.cmt-profile-email { margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--border); }
.cmt-profile-sec-title {
    font-size: 13px; font-weight: 600; color: var(--text-muted);
    margin-bottom: 10px;
    display: flex; align-items: center; gap: 6px;
}
.cmt-modal-input-row { display: flex; gap: 8px; }
.cmt-modal-input-row .cmt-modal-input { flex: 1; min-width: 0; }
.cmt-email-confirm {
    margin-top: 10px;
    background: var(--accent-light);
    color: var(--accent);
}
.cmt-user-link { color: inherit; text-decoration: none; transition: color 0.15s; }
.cmt-user-link:hover .cmt-name,
.cmt-user-link:hover .cmt-reply-name { color: var(--accent); }
.cmt-user-link:hover .cmt-avatar-img { opacity: 0.82; }
.captcha-box { margin-top: 10px; }
/* ===== v2.11.0：滑块人机验证已彻底移除；以下为登录框新样式（密码可见性 / 设备快速登录 / 设备管理） ===== */
.cmt-pw-row { position: relative; width: 100%; }
.cmt-pw-row .cmt-modal-input.cmt-pw-input { padding-right: 44px; }
.cmt-pw-toggle {
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    width: 34px;
    height: 34px;
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 15px;
    line-height: 1;
    color: var(--text-muted);
    border-radius: 8px;
}
.cmt-pw-toggle:hover { background: var(--hover-bg); color: var(--text); }
.cmt-device-login { margin-top: 8px; width: 100%; }
.cmt-device-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px;
    border: 1px dashed var(--border);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.15s;
}
.cmt-device-btn svg { width: 16px; height: 16px; }
.cmt-device-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-light); }
.cmt-profile-devices { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--border); }
.cmt-profile-sec-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.cmt-device-list { display: flex; flex-direction: column; gap: 6px; margin-bottom: 8px; }
.cmt-device-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--code-bg);
}
.cmt-device-info { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.cmt-device-name { font-size: 13px; font-weight: 500; color: var(--text); }
.cmt-device-meta { font-size: 11px; color: var(--text-muted); }
.cmt-device-ops { display: flex; gap: 6px; flex-shrink: 0; }
.cmt-device-edit, .cmt-device-del {
    padding: 4px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: transparent;
    font-size: 12px;
    cursor: pointer;
}
.cmt-device-edit { color: var(--text-secondary); }
.cmt-device-edit:hover { background: var(--hover-bg); color: var(--text); }
.cmt-device-del { color: var(--danger, #e5484d); }
.cmt-device-del:hover { background: rgba(229,72,77,0.08); border-color: var(--danger, #e5484d); }
.cmt-device-empty { font-size: 12px; color: var(--text-muted); padding: 6px 2px; }
.cmt-device-add {
    width: 100%;
    padding: 9px;
    border: 1px dashed var(--accent);
    border-radius: var(--radius-sm);
    background: var(--accent-light);
    color: var(--accent);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.15s;
}
.cmt-device-add:hover { opacity: 0.85; }
/* v2.11.3：站长端 / 写作者端「设备快速登录」卡样式（复用评论区设备管理视觉） */
.dash-device-list { display: flex; flex-direction: column; gap: 6px; margin-bottom: 10px; }
.dash-device-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--code-bg);
}
.dash-device-info { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.dash-device-name { font-size: 13px; font-weight: 500; color: var(--text); }
.dash-device-meta { font-size: 11px; color: var(--text-muted); }
.dash-device-ops { display: flex; gap: 6px; flex-shrink: 0; }
.dash-device-edit, .dash-device-del {
    padding: 4px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: transparent;
    font-size: 12px;
    cursor: pointer;
}
.dash-device-edit { color: var(--text-secondary); }
.dash-device-edit:hover { background: var(--hover-bg); color: var(--text); }
.dash-device-del { color: var(--danger, #e5484d); }
.dash-device-del:hover { background: rgba(229,72,77,0.08); border-color: var(--danger, #e5484d); }
.dash-device-empty { font-size: 12px; color: var(--text-muted); padding: 6px 2px; }