/**
 * Mrsong — Achromatic Precision
 * 右侧固定侧栏 + 左侧可滚动主内容
 */

:root {
	--mrsongFontSans: var(--wp--preset--font-family--sans-sc), "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
	--mrsongFontSerif: var(--wp--preset--font-family--serif-sc), "Noto Serif SC", "Songti SC", "STSong", serif;
	--mrsongListExcerptSize: 1rem;
	--mrsongListExcerptLineHeight: 1.75;
	--mrsongListTitleSize: clamp(1.5rem, 2.5vw, 1.875rem);
	--mrsongListTitleLineHeight: 1.35;
	--mrsongBodyContentSize: var(--mrsongListExcerptSize);
	--mrsongHeadingSmallSize: 1.25rem;
	--mrsongHeadingWeight: 700;
	--mrsongHeadingWeightPrimary: 800;
	--mrsongHeadingAccentWidth: 4px;
	--mrsongHeadingAccentColor: #000;
	--mrsongHeadingAccentGap: 0.85rem;
	--mrsongContainerMax: 1200px;
	--mrsongShellWidth: min(var(--mrsongContainerMax), 100vw);
	--mrsongSidebarWidth: 280px;
	--mrsongSidebarRight: calc((100vw - var(--mrsongShellWidth)) / 2 + var(--mrsongGutter));
	--mrsongContentMax: 800px;
	--mrsongContentPadX: 24px;
	--mrsongContentItemGap: 64px;
	--mrsongContentText: #111827;
	--mrsongContentExcerpt: #4b5563;
	--mrsongContentMeta: #9ca3af;
	--mrsongContentSecondary: #6b7280;
	--mrsongContentBorder: #f3f4f6;
	--mrsongContentBg: transparent;
	--mrsongContentCategory: #1a1c1e;
	--mrsongMarginDesktop: 80px;
	--mrsongLayoutTop: var(--mrsongMarginDesktop);
	--mrsongMainTop: 45px;
	--mrsongMainTopMobile: calc(var(--mrsongMobileNavOffset) + (80px - var(--mrsongMobileNavHeight)));
	--mrsongMarginTablet: 40px;
	--mrsongMarginMobile: 24px;
	--mrsongGutter: 32px;
	--mrsongUnit: 8px;
	--mrsongBorderHairline: 1px solid var(--wp--preset--color--outline-variant, #eeeeee);
	--mrsongSearchBorderFocus: var(--wp--preset--color--outline, #888888);
	--mrsongColorMuted: var(--wp--preset--color--on-surface-variant, #555555);
	--mrsongColorMeta: var(--wp--preset--color--outline, #888888);
	--mrsongColorSecondary: var(--wp--preset--color--secondary, #555555);
	--mrsongAccent: var(--wp--preset--color--accent, #4a7fc1);
	--mrsongAccentSoft: var(--wp--preset--color--accent-soft, #d1e9f6);
	--mrsongCatActiveBg: #f0f4f7;
	--mrsongCatActiveText: #4a5d65;
	--mrsongCatActiveCount: #6b838c;
	--mrsongCatText: #555555;
	--mrsongCatCount: #999999;
	--mrsongCatRadius: 8px;
	--mrsongRadius: 6px;
	--mrsongRadiusPill: 6px;
	--mrsongMobileNavHeight: 56px;
	--mrsongMobileNavOffset: var(--mrsongMobileNavHeight);
}

body {
	margin: 0;
	background: var(--wp--preset--color--background, #f8f9fa);
	color: var(--wp--preset--color--on-background, #111111);
	-webkit-font-smoothing: antialiased;
}

/* 无障碍跳转目标：与侧栏站点标题顶对齐，不额外预留顶部空白 */
#wp--skip-link--target,
.wp--skip-link--target,
main#wp--skip-link--target,
main.wp--skip-link--target {
	margin-right: 0 !important;
	margin-top: 0 !important;
	padding-right: 0 !important;
}

/* 主栏首块前不叠加 WP block-gap */
.mrsong-main.is-layout-flow > :first-child,
.mrsong-main .wp-block-query.is-layout-flow > :first-child,
.mrsong-main .wp-block-post-template.is-layout-flow > li:first-child {
	margin-block-start: 0 !important;
}

.mrsong-main .wp-block-post-template > li:first-child .mrsong-post-card {
	padding-top: 0 !important;
	margin-top: 0 !important;
}

.mrsong-main > .mrsong-archive-header:first-child,
.mrsong-main > .mrsong-content-header:first-child,
.mrsong-main > .mrsong-single-header:first-child {
	margin-top: 0 !important;
	padding-top: 0 !important;
}

/* ─── 外层居中容器（宽屏时整页居中，最大 1200px） ─── */
.mrsong-shell,
.wp-block-group.mrsong-shell {
	max-width: var(--mrsongContainerMax) !important;
	width: 100% !important;
	margin-left: auto !important;
	margin-right: auto !important;
	padding-left: var(--mrsongGutter) !important;
	padding-right: var(--mrsongGutter) !important;
	box-sizing: border-box !important;
}

/* 覆盖 WP 对 constrained 子元素的 max-width 限制 */
.mrsong-shell > .mrsong-layout,
.mrsong-shell > .wp-block-group.mrsong-layout {
	max-width: none !important;
	width: 100% !important;
}

/* ─── 双栏 flex（覆盖 WP layout flow 的 100% 子宽） ─── */
.mrsong-layout,
.wp-block-group.mrsong-layout,
.mrsong-layout.is-layout-flex {
	display: flex !important;
	flex-direction: row !important;
	flex-wrap: nowrap !important;
	align-items: flex-start !important;
	width: 100% !important;
	min-height: 100vh;
	margin: 0 !important;
	padding: 0 !important;
	box-sizing: border-box;
}

.mrsong-layout > main,
.mrsong-layout > .mrsong-main,
.mrsong-layout > .wp-block-group.mrsong-main,
main#wp--skip-link--target.mrsong-main {
	flex: 1 1 auto !important;
	width: auto !important;
	max-width: none !important;
	min-width: 0 !important;
	margin: 0 !important;
	margin-top: 0 !important;
	padding-right: 0 !important;
	box-sizing: border-box;
	background: var(--mrsongContentBg);
}

@media (min-width: 901px) {
	.mrsong-layout > main,
	.mrsong-layout > .mrsong-main,
	.mrsong-layout > .wp-block-group.mrsong-main,
	main#wp--skip-link--target.mrsong-main {
		padding: var(--mrsongMainTop) 0 calc(var(--mrsongMarginDesktop) * 0.75) 0 !important;
	}
}

/* 占位宽度：侧栏 fixed 脱离文档流，此处保留空间防止主栏被遮挡 */
.mrsong-layout > .wp-block-template-part {
	flex: 0 0 var(--mrsongSidebarWidth) !important;
	width: var(--mrsongSidebarWidth) !important;
	max-width: var(--mrsongSidebarWidth) !important;
	min-width: var(--mrsongSidebarWidth) !important;
	min-height: 100vh;
	margin: 0 !important;
	padding: 0 !important;
	position: relative;
}

/* ─── 右侧固定侧栏（对齐居中容器右缘，不贴浏览器边缘） ─── */
.mrsong-layout > .wp-block-template-part .mrsong-sidebar,
.mrsong-layout > .wp-block-template-part > .mrsong-sidebar,
.mrsong-sidebar,
.wp-block-group.mrsong-sidebar {
	position: fixed !important;
	top: 0 !important;
	right: var(--mrsongSidebarRight) !important;
	left: auto !important;
	width: var(--mrsongSidebarWidth) !important;
	max-width: var(--mrsongSidebarWidth) !important;
	height: 100vh;
	padding: var(--mrsongLayoutTop) 0 var(--mrsongMarginDesktop) calc(var(--mrsongGutter) * 0.75);
	background: transparent;
	border-left: var(--mrsongBorderHairline);
	box-sizing: border-box;
	z-index: 100;
	display: flex !important;
	flex-direction: column;
	justify-content: space-between;
	overflow-y: auto;
}

.mrsong-sidebar__inner {
	display: flex;
	flex-direction: column;
	justify-content: flex-start;
	height: 100%;
	width: 100%;
	min-height: 0;
}

.mrsong-sidebar__inner > .mrsong-sidebar__drawer {
	flex: 1 1 auto;
	min-height: 0;
}

.mrsong-sidebar__header-row {
	width: 100%;
	margin-top: 0;
	padding-top: 0;
}

.mrsong-sidebar__brand {
	margin-top: 0;
	padding-top: 0;
}

.mrsong-nav-toggle,
.mrsong-nav-overlay {
	display: none;
}

.mrsong-sidebar__drawer {
	display: flex;
	flex-direction: column;
	flex: 1 1 auto;
	justify-content: flex-start;
	gap: 0;
	min-height: 0;
}

.mrsong-sidebar__brand .wp-block-site-title {
	font-family: var(--mrsongFontSerif);
	font-size: 1.375rem;
	font-weight: var(--mrsongHeadingWeightPrimary);
	line-height: 1.3;
	letter-spacing: 0;
	margin: 0;
}

.mrsong-sidebar__brand .wp-block-site-title a {
	color: var(--wp--preset--color--primary, #000);
	text-decoration: none;
}

.mrsong-sidebar__brand .wp-block-site-title a:hover {
	color: var(--mrsongColorSecondary);
}

.mrsong-sidebar__tagline {
	margin-top: 15px;
	color: var(--mrsongColorMeta);
	font-family: var(--mrsongFontSans);
	font-size: 0.8125rem;
	line-height: 1.55;
	font-weight: 400;
}

.mrsong-sidebar__search {
	margin: calc(var(--mrsongUnit) * 1.5) 0 calc(var(--mrsongUnit) * 3);
	padding: 0;
	border: none;
}

.mrsong-sidebar__search .wp-block-search {
	margin: 0;
}

.mrsong-sidebar__search .wp-block-search__inside-wrapper {
	display: flex;
	align-items: center;
	gap: calc(var(--mrsongUnit) * 1);
	border: none;
	border-top: var(--mrsongBorderHairline);
	border-bottom: var(--mrsongBorderHairline);
	border-left: none;
	border-right: none;
	border-radius: 0 !important;
	padding: 0;
	background: transparent;
	box-shadow: none;
	transition: border-color 0.2s ease;
}

.mrsong-sidebar__search .wp-block-search__inside-wrapper:focus-within {
	border-top-color: var(--mrsongSearchBorderFocus);
	border-bottom-color: var(--mrsongSearchBorderFocus);
}

.mrsong-sidebar__search .wp-block-search__input {
	flex: 1 1 auto;
	min-width: 0;
	border: none;
	border-radius: 0 !important;
	padding: calc(var(--mrsongUnit) * 1.25) 0;
	font-family: var(--mrsongFontSans);
	font-size: 0.875rem;
	color: var(--mrsongColorMuted);
	background: transparent;
	box-shadow: none;
}

.mrsong-sidebar__search .wp-block-search__input:focus {
	outline: none;
	border: none;
	box-shadow: none;
	background: transparent;
}

.mrsong-sidebar__search .wp-block-search__input::placeholder {
	color: var(--mrsongColorMeta);
}

.mrsong-sidebar__search .wp-block-search__button {
	flex-shrink: 0;
	align-self: stretch;
	display: inline-flex;
	align-items: center;
	margin: 0;
	padding: 0 calc(var(--mrsongUnit) * 0.5);
	border: none;
	border-radius: 0 !important;
	background: transparent;
	color: var(--mrsongColorMuted);
	box-shadow: none;
}

.mrsong-sidebar__search .wp-block-search__button:hover,
.mrsong-sidebar__search .wp-block-search__button:focus {
	background: transparent;
	color: var(--mrsongColorMuted);
}

.mrsong-sidebar__search .wp-block-search__button .mrsong-sidebar-search__icon {
	font-size: 1.125rem;
	line-height: 1;
}

.mrsong-sidebar__search .wp-block-search__button svg {
	display: none;
}

.mrsong-sidebar__nav {
	margin: 0;
	padding: 0;
	border: none;
}

.mrsong-sidebar__nav-label {
	margin: 0 0 calc(var(--mrsongUnit) * 1.25);
	font-family: var(--mrsongFontSans);
	font-size: 0.75rem;
	font-weight: 500;
	letter-spacing: 0.04em;
	text-transform: none;
	color: var(--mrsongColorMeta);
}

.mrsong-sidebar-categories,
.mrsong-sidebar__nav .wp-block-categories-list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: 4px;
}

.mrsong-sidebar-categories li {
	margin: 0;
	padding: 0;
	list-style: none;
	width: 100%;
}

.mrsong-sidebar-categories a.mrsong-cat-item__link,
.mrsong-sidebar__nav .wp-block-categories-list a {
	display: flex;
	flex-wrap: nowrap;
	align-items: center;
	gap: 10px;
	width: 100%;
	box-sizing: border-box;
	padding: 10px 12px;
	border-radius: var(--mrsongCatRadius) !important;
	font-family: var(--mrsongFontSans);
	text-decoration: none;
	color: var(--mrsongCatText);
	transition: background 0.15s ease, color 0.15s ease;
}

.mrsong-sidebar-categories a.mrsong-cat-item__link:hover,
.mrsong-sidebar__nav .wp-block-categories-list a:hover {
	background: rgb(0 0 0 / 0.035);
	color: var(--mrsongCatText);
}

.mrsong-sidebar-categories li.current-cat > a.mrsong-cat-item__link,
.mrsong-sidebar__nav .wp-block-categories-list li.current-cat > a {
	background: var(--mrsongCatActiveBg);
	color: var(--mrsongCatActiveText);
	font-weight: 700;
}

/* 侧栏 Material Symbols（Stitch code.html，与主内容区样式隔离） */
.mrsong-sidebar .material-symbols-outlined {
	font-family: "Material Symbols Outlined";
	font-weight: normal;
	font-style: normal;
	font-size: 1.25rem;
	line-height: 1;
	letter-spacing: normal;
	text-transform: none;
	display: inline-block;
	white-space: nowrap;
	word-wrap: normal;
	direction: ltr;
	font-feature-settings: "liga";
	-webkit-font-smoothing: antialiased;
}

.mrsong-sidebar .mrsong-cat-item__icon {
	flex-shrink: 0;
	width: 1.25rem;
	font-size: 1.25rem;
	color: inherit;
	opacity: 0.85;
}

.mrsong-sidebar-categories li.current-cat .mrsong-cat-item__icon {
	opacity: 1;
}

.mrsong-sidebar .mrsong-sidebar__link-icon {
	flex-shrink: 0;
	width: 1.125rem;
	font-size: 1.125rem;
	color: inherit;
	opacity: 0.72;
}

.mrsong-sidebar .mrsong-sidebar-search__icon {
	font-size: 1.125rem;
	opacity: 0.85;
}

.mrsong-cat-item__label {
	flex: 1 1 auto;
	min-width: 0;
	font-size: 0.875rem;
	font-weight: 500;
	line-height: 1.35;
	color: inherit;
}

.mrsong-cat-item__count {
	flex: 0 0 auto;
	margin-left: auto;
	min-width: 1.25rem;
	text-align: right;
	white-space: nowrap;
	font-size: 0.8125rem;
	font-weight: 400;
	font-variant-numeric: tabular-nums;
	color: var(--mrsongCatCount);
}

.mrsong-sidebar-categories li.current-cat .mrsong-cat-item__count {
	color: var(--mrsongCatActiveCount);
	font-weight: 500;
}

/* 增强未生效时的兜底：仍保留基础排版 */
.mrsong-sidebar-categories:not(:has(.mrsong-cat-item__link)) li {
	margin: 0;
	padding: 0;
}

.mrsong-sidebar-categories:not(:has(.mrsong-cat-item__link)) a {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 10px;
	padding: 10px 12px;
	border-radius: var(--mrsongCatRadius) !important;
	font-size: 0.875rem;
	font-weight: 500;
	color: var(--mrsongCatText);
	text-decoration: none;
}

.mrsong-sidebar-categories:not(:has(.mrsong-cat-item__link)) li.current-cat > a {
	background: var(--mrsongCatActiveBg);
	color: var(--mrsongCatActiveText);
}

.mrsong-sidebar__links {
	display: flex;
	flex-direction: column;
	gap: calc(var(--mrsongUnit) * 1.25);
	margin-top: auto;
	padding-top: calc(var(--mrsongUnit) * 3);
	border-top: var(--mrsongBorderHairline);
}

.mrsong-sidebar__link {
	display: inline-flex;
	align-items: center;
	gap: calc(var(--mrsongUnit) * 1);
	font-family: var(--mrsongFontSans);
	font-size: 0.875rem;
	font-weight: 500;
	color: var(--mrsongColorMuted);
	text-decoration: none;
	transition: color 0.2s ease;
}

.mrsong-sidebar__link:hover {
	color: var(--wp--preset--color--primary, #000);
}

/* ─── 主内容区（Content Area Design Specs） ─── */
.mrsong-main > .wp-block-query {
	margin-top: 0 !important;
	padding-top: 0 !important;
}

.mrsong-main > .wp-block-query,
.mrsong-main > .wp-block-group,
.mrsong-main > .wp-block-post-content,
.mrsong-main > .wp-block-query-title {
	max-width: var(--mrsongContentMax);
}

.mrsong-content-header,
.mrsong-archive-header {
	margin-bottom: calc(var(--mrsongUnit) * 10);
	padding-bottom: calc(var(--mrsongUnit) * 4);
	max-width: var(--mrsongContentMax);
	border-bottom: 1px solid var(--mrsongContentBorder);
}

.mrsong-content-header .wp-block-query-title,
.mrsong-content-header .wp-block-query-title h1,
.mrsong-archive-header .wp-block-query-title,
.mrsong-archive-header .wp-block-query-title h1 {
	font-family: var(--mrsongFontSerif) !important;
	font-size: clamp(2.25rem, 4vw, 3rem) !important;
	font-weight: var(--mrsongHeadingWeightPrimary) !important;
	line-height: 1.25 !important;
	letter-spacing: -0.02em;
	color: var(--mrsongContentText) !important;
	margin: 0 0 calc(var(--mrsongUnit) * 2) !important;
}

.mrsong-archive-header .wp-block-term-description,
.mrsong-archive-header .wp-block-term-description p {
	font-family: var(--mrsongFontSans);
	font-size: 1.125rem;
	line-height: 1.8;
	color: var(--mrsongContentExcerpt);
	margin: 0;
}

/* ─── 文章列表卡片 ─── */
.mrsong-post-card {
	padding-top: calc(var(--mrsongContentItemGap) / 2) !important;
	padding-bottom: calc(var(--mrsongContentItemGap) / 2) !important;
}

.mrsong-post-card:first-child {
	padding-top: 0 !important;
}

.mrsong-post-card:not(:last-child) {
	border-bottom: 1px solid var(--mrsongContentBorder);
}

.mrsong-post-meta {
	display: flex;
	align-items: center;
	flex-wrap: wrap;
	gap: 0.35rem;
	margin-bottom: calc(var(--mrsongUnit) * 2);
}

.mrsong-post-meta .wp-block-post-date {
	font-family: var(--mrsongFontSans);
	font-size: 0.875rem !important;
	font-weight: 400;
	text-transform: none;
	letter-spacing: 0.02em;
	color: var(--mrsongContentMeta) !important;
	margin: 0 !important;
}

.mrsong-post-meta .wp-block-post-terms {
	font-family: var(--mrsongFontSans);
	font-size: 0.875rem !important;
	font-weight: 500;
	text-transform: none;
	letter-spacing: 0;
	color: var(--mrsongContentCategory) !important;
	margin: 0 !important;
	background: transparent !important;
	padding: 0 !important;
	display: inline;
}

.mrsong-post-meta .wp-block-post-terms a {
	color: var(--mrsongContentCategory) !important;
	background: transparent !important;
	padding: 0 !important;
	text-decoration: none;
	transition: opacity 0.3s ease;
}

.mrsong-post-meta .wp-block-post-terms a:hover {
	color: var(--mrsongContentCategory) !important;
	opacity: 0.72;
}

.mrsong-meta-sep {
	font-size: 0.875rem;
	color: var(--mrsongContentMeta);
	margin: 0;
	font-family: var(--mrsongFontSans);
}

.mrsong-post-card .wp-block-post-title {
	font-family: var(--mrsongFontSerif) !important;
	font-size: var(--mrsongListTitleSize) !important;
	font-weight: var(--mrsongHeadingWeightPrimary) !important;
	line-height: var(--mrsongListTitleLineHeight) !important;
	letter-spacing: -0.01em;
	margin: 0 0 calc(var(--mrsongUnit) * 2) !important;
	color: var(--mrsongContentText) !important;
}

.mrsong-post-card .wp-block-post-title a {
	color: inherit;
	text-decoration: none;
	transition: color 0.3s ease;
}

.mrsong-post-card .wp-block-post-title a:hover {
	color: var(--mrsongContentExcerpt);
}

.mrsong-post-card .wp-block-post-excerpt,
.mrsong-post-card .wp-block-post-excerpt p {
	font-family: var(--mrsongFontSans);
	font-size: var(--mrsongListExcerptSize);
	line-height: var(--mrsongListExcerptLineHeight);
	letter-spacing: 0;
	color: var(--mrsongContentExcerpt);
	margin: 0 0 calc(var(--mrsongUnit) * 3);
}

.mrsong-post-card .wp-block-post-excerpt__excerpt {
	line-height: var(--mrsongListExcerptLineHeight);
}

/* 列表全文（碎碎念 / 播客等） */
.mrsong-post-card.mrsong-list-full-card .mrsong-list-full {
	font-family: var(--mrsongFontSans);
	font-size: var(--mrsongListExcerptSize);
	line-height: var(--mrsongListExcerptLineHeight);
	color: var(--mrsongContentExcerpt);
	margin: 0 0 calc(var(--mrsongUnit) * 3);
}

.mrsong-post-card.mrsong-list-full-card .mrsong-list-full p {
	margin: 0 0 1em;
}

.mrsong-post-card.mrsong-list-full-card .mrsong-list-full p:last-child {
	margin-bottom: 0;
}

.mrsong-post-card.mrsong-list-full-card .mrsong-list-full :is(img, video, iframe) {
	max-width: 100%;
	height: auto;
}

.mrsong-post-card.mrsong-list-full-card .mrsong-list-full .wp-block-embed,
.mrsong-post-card.mrsong-list-full-card .mrsong-list-full .wp-block-video,
.mrsong-post-card.mrsong-list-full-card .mrsong-list-full .wp-block-audio {
	margin: 0 0 calc(var(--mrsongUnit) * 2);
}

.mrsong-post-card.mrsong-list-full-card .mrsong-list-full .wp-block-embed__wrapper {
	position: relative;
}

.mrsong-post-card.mrsong-list-full-card .wp-block-read-more,
.mrsong-post-card.mrsong-list-full-card .mrsong-read-more,
.mrsong-list-full-card .mrsong-post-card .wp-block-read-more,
.mrsong-list-full-card .mrsong-post-card .mrsong-read-more,
.wp-block-post-template > li.mrsong-list-full-card .wp-block-read-more,
.wp-block-post-template > li.mrsong-list-full-card .mrsong-read-more {
	display: none !important;
}

.mrsong-post-card.mrsong-list-full-card--no-title .wp-block-post-title,
.mrsong-list-full-card--no-title .wp-block-post-title,
.mrsong-list-full-card.mrsong-list-full-card--no-title .wp-block-post-title,
.wp-block-post-template > li.mrsong-list-full-card--no-title .wp-block-post-title {
	display: none !important;
}

.mrsong-post-card .mrsong-read-more,
.mrsong-post-card .wp-block-read-more {
	display: inline-flex;
	align-items: center;
	gap: calc(var(--mrsongUnit) * 1);
	font-family: var(--mrsongFontSans);
	font-weight: 700;
	font-size: 0.875rem;
	color: var(--mrsongContentText);
	text-decoration: none;
	letter-spacing: 0;
	transition: gap 0.3s ease, color 0.3s ease;
}

.mrsong-post-card .mrsong-read-more__icon {
	display: inline-flex;
	flex-shrink: 0;
	transition: transform 0.3s ease;
}

.mrsong-post-card .mrsong-read-more__icon svg,
.mrsong-post-card .mrsong-read-more svg {
	display: block;
	width: 16px;
	height: 16px;
}

.mrsong-post-card .mrsong-read-more:hover .mrsong-read-more__icon,
.mrsong-post-card .wp-block-read-more:hover .mrsong-read-more__icon {
	transform: translateX(4px);
}

.mrsong-divider {
	display: none !important;
}

/* ─── 单篇正文 ─── */
.mrsong-single-header {
	margin-bottom: calc(var(--mrsongUnit) * 4);
	max-width: var(--mrsongContentMax);
	width: 100%;
}

.mrsong-single-header .wp-block-post-title {
	font-family: var(--mrsongFontSerif) !important;
	font-size: clamp(2rem, 4vw, 2.75rem) !important;
	font-weight: var(--mrsongHeadingWeightPrimary) !important;
}

.mrsong-single-content {
	font-family: var(--mrsongFontSans);
	font-size: var(--mrsongListExcerptSize);
	line-height: var(--mrsongListExcerptLineHeight);
	letter-spacing: 0;
	max-width: var(--mrsongContentMax) !important;
	width: 100%;
	margin-left: 0 !important;
	margin-right: 0 !important;
}

.mrsong-single-content.is-layout-constrained > :where(:not(.alignleft):not(.alignright):not(.alignfull)) {
	max-width: none !important;
	margin-left: 0 !important;
	margin-right: 0 !important;
}

.mrsong-single-content p {
	margin-bottom: 1.5em;
}

/* 正文标题：左侧黑线 + 加粗衬线（含 <small> 整块对齐竖线） */
.mrsong-single-content :is(h1, h2, h3, h4, h5, h6),
.mrsong-single-content .wp-block-heading,
.wp-block-post-content :is(h1, h2, h3, h4, h5, h6),
.wp-block-post-content .wp-block-heading,
.entry-content :is(h1, h2, h3, h4, h5, h6),
.entry-content .wp-block-heading,
.editor-styles-wrapper :is(h1, h2, h3, h4, h5, h6),
.editor-styles-wrapper .wp-block-heading {
	box-sizing: border-box;
	border-left: var(--mrsongHeadingAccentWidth) solid var(--mrsongHeadingAccentColor);
	padding-left: var(--mrsongHeadingAccentGap);
	font-family: var(--mrsongFontSerif) !important;
	font-weight: var(--mrsongHeadingWeight) !important;
	color: var(--wp--preset--color--primary, #000) !important;
	letter-spacing: 0;
}

.mrsong-single-content :is(h1, h2),
.mrsong-single-content :is(h1, h2).wp-block-heading,
.wp-block-post-content :is(h1, h2),
.wp-block-post-content :is(h1, h2).wp-block-heading,
.entry-content :is(h1, h2),
.editor-styles-wrapper :is(h1, h2) {
	font-weight: var(--mrsongHeadingWeightPrimary) !important;
}

.mrsong-single-content :is(h1, h2, h3, h4, h5, h6),
.mrsong-single-content .wp-block-heading {
	margin-top: 2em;
	font-size: var(--mrsongListTitleSize) !important;
	line-height: var(--mrsongListTitleLineHeight) !important;
}

.mrsong-single-content h2:first-child,
.mrsong-single-content .wp-block-heading:first-child {
	margin-top: 0;
}

/* 标题内 <small>：换行，与标题同字族同色，加粗，字号略大于正文 */
.mrsong-single-content :is(h1, h2, h3, h4, h5, h6) small,
.wp-block-post-content :is(h1, h2, h3, h4, h5, h6) small,
.entry-content :is(h1, h2, h3, h4, h5, h6) small,
.editor-styles-wrapper :is(h1, h2, h3, h4, h5, h6) small {
	display: block;
	margin-top: 0.35em;
	font-family: inherit;
	font-size: var(--mrsongHeadingSmallSize);
	font-weight: var(--mrsongHeadingWeight) !important;
	line-height: 1.5;
	letter-spacing: inherit;
	color: inherit;
	opacity: 1;
}

.mrsong-single-content :is(h1, h2) small,
.wp-block-post-content :is(h1, h2) small,
.entry-content :is(h1, h2) small,
.editor-styles-wrapper :is(h1, h2) small {
	font-weight: var(--mrsongHeadingWeightPrimary) !important;
}

/* ─── 页脚（主栏内细线分隔） ─── */
.mrsong-footer {
	margin-top: calc(var(--mrsongUnit) * 8);
	margin-left: 0 !important;
	margin-right: 0 !important;
	padding-top: calc(var(--mrsongUnit) * 3);
	padding-left: 0 !important;
	padding-right: 0 !important;
	border-top: var(--mrsongBorderHairline);
	max-width: var(--mrsongContentMax);
	width: 100%;
	box-sizing: border-box;
}

.mrsong-footer > .wp-block-group {
	display: flex;
	justify-content: space-between;
	align-items: center;
	flex-wrap: wrap;
	gap: calc(var(--mrsongUnit) * 2);
	width: 100%;
	max-width: none;
	margin-left: 0 !important;
	margin-right: 0 !important;
	padding-left: 0 !important;
	padding-right: 0 !important;
}

.mrsong-footer.is-layout-constrained > :where(:not(.alignleft):not(.alignright):not(.alignfull)) {
	max-width: none;
	margin-left: 0 !important;
	margin-right: 0 !important;
}

.mrsong-footer .wp-block-site-title {
	font-family: var(--mrsongFontSerif);
	font-size: 1rem !important;
	font-weight: 700;
	margin: 0 !important;
}

.mrsong-footer .wp-block-navigation {
	margin: 0 !important;
	padding: 0 !important;
}

.mrsong-footer .wp-block-navigation__container {
	margin: 0 !important;
	padding: 0 !important;
}

.mrsong-footer .wp-block-navigation a {
	font-family: var(--mrsongFontSans);
	font-size: 0.875rem;
	color: var(--mrsongColorMuted);
	text-decoration: none;
}

.mrsong-footer .wp-block-navigation a:hover {
	color: var(--wp--preset--color--primary, #000);
}

/* ─── 按钮（设计系统：直角、反色 hover） ─── */
.wp-block-button__link {
	border-radius: var(--mrsongRadius) !important;
	font-family: var(--mrsongFontSans);
	font-weight: 500;
	transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.wp-block-button.is-style-outline .wp-block-button__link {
	background: transparent !important;
	color: var(--wp--preset--color--primary, #000) !important;
	border: 1px solid var(--wp--preset--color--primary, #000) !important;
}

.wp-block-button.is-style-outline .wp-block-button__link:hover {
	background: var(--wp--preset--color--primary, #000) !important;
	color: var(--wp--preset--color--on-primary, #fff) !important;
}

/* ─── 标签 Chips（仅显式 chip 样式，不含列表元信息分类） ─── */
.wp-block-post-terms.is-style-mrsong-chip a {
	display: inline-block;
	padding: 4px 10px;
	background: var(--wp--preset--color--surface-container, #f5f5f5);
	font-size: 0.6875rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.1em;
}

/* ─── 分页（Content Area Specs） ─── */
.mrsong-main .wp-block-query-pagination {
	margin-top: calc(var(--mrsongUnit) * 10);
	padding-top: 0;
	font-family: var(--mrsongFontSans);
	font-size: 0.875rem;
	justify-content: center !important;
	gap: calc(var(--mrsongUnit) * 1);
	flex-wrap: wrap;
}

.mrsong-main .wp-block-query-pagination a,
.mrsong-main .wp-block-query-pagination .page-numbers {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 2.5rem;
	width: 2.5rem;
	height: 2.5rem;
	padding: 0;
	border-radius: 999px !important;
	color: var(--mrsongContentSecondary);
	text-decoration: none;
	transition: background 0.3s ease, color 0.3s ease;
}

.mrsong-main .wp-block-query-pagination a:hover {
	background: #f9fafb;
	color: var(--mrsongContentText);
}

.mrsong-main .wp-block-query-pagination .page-numbers.current {
	background: var(--mrsongContentBorder);
	color: var(--mrsongContentText);
	font-weight: 700;
}

.mrsong-main .wp-block-query-pagination-previous a,
.mrsong-main .wp-block-query-pagination-next a {
	width: auto;
	min-width: 0;
	padding: 0 calc(var(--mrsongUnit) * 1.5);
	border-radius: var(--mrsongRadius) !important;
	font-weight: 600;
}

.mrsong-archive-title {
	font-family: var(--mrsongFontSerif);
	font-size: clamp(2.25rem, 4vw, 3rem);
	font-weight: var(--mrsongHeadingWeightPrimary);
	line-height: 1.25;
	color: var(--mrsongContentText);
	margin-bottom: calc(var(--mrsongUnit) * 3);
	text-transform: none;
}

/* 列表 / 归档 / 搜索等页面主标题统一衬线 */
.mrsong-main .wp-block-query-title,
.mrsong-main .wp-block-query-title h1 {
	font-family: var(--mrsongFontSerif) !important;
	font-weight: var(--mrsongHeadingWeightPrimary) !important;
	font-size: clamp(2.25rem, 4vw, 3rem) !important;
	line-height: 1.25 !important;
	letter-spacing: -0.02em;
	color: var(--mrsongContentText) !important;
}

/* ─── 响应式 ─── */
@media (max-width: 1024px) and (min-width: 901px) {
	.mrsong-main,
	.mrsong-layout > .mrsong-main,
	.mrsong-layout > .wp-block-group.mrsong-main,
	main#wp--skip-link--target.mrsong-main {
		--mrsongMainTop: var(--mrsongMarginTablet);
		padding: var(--mrsongMainTop) 0 var(--mrsongMarginTablet) 0 !important;
	}
	.mrsong-sidebar {
		--mrsongLayoutTop: var(--mrsongMarginTablet);
		padding: var(--mrsongLayoutTop) var(--mrsongGutter) var(--mrsongMarginTablet) var(--mrsongGutter);
	}
}

@media (max-width: 900px) {
	.mrsong-shell,
	.wp-block-group.mrsong-shell {
		padding-left: calc(var(--mrsongUnit) * 2) !important;
		padding-right: calc(var(--mrsongUnit) * 2) !important;
	}

	.mrsong-layout,
	.wp-block-group.mrsong-layout {
		flex-direction: column !important;
	}

	/* 侧栏模板不占文档流高度，顶栏 fixed */
	.mrsong-layout > .wp-block-template-part {
		flex: 0 0 0 !important;
		width: 100% !important;
		max-width: 100% !important;
		min-width: 0 !important;
		height: 0 !important;
		min-height: 0 !important;
		overflow: visible !important;
		visibility: visible !important;
	}

	.mrsong-layout > .wp-block-template-part .mrsong-sidebar,
	.mrsong-sidebar,
	.wp-block-group.mrsong-sidebar {
		position: fixed !important;
		top: 0 !important;
		left: 0 !important;
		right: 0 !important;
		width: 100% !important;
		max-width: 100% !important;
		height: auto !important;
		min-height: 0 !important;
		padding: 0 !important;
		border: none !important;
		background: transparent !important;
		z-index: 200;
		overflow: visible !important;
		pointer-events: none;
	}

	.mrsong-sidebar__inner {
		height: auto;
		min-height: 0;
		pointer-events: none;
	}

	.mrsong-sidebar__header-row {
		position: fixed;
		top: 0;
		left: 0;
		right: 0;
		z-index: 201;
		box-sizing: border-box;
		display: flex !important;
		flex-direction: row !important;
		flex-wrap: nowrap !important;
		align-items: center !important;
		justify-content: space-between !important;
		gap: calc(var(--mrsongUnit) * 2);
		width: 100%;
		height: var(--mrsongMobileNavHeight);
		min-height: var(--mrsongMobileNavHeight);
		margin: 0 !important;
		padding: 0 calc(var(--mrsongUnit) * 2) !important;
		border-bottom: var(--mrsongBorderHairline);
		background: var(--wp--preset--color--surface, #fff);
		pointer-events: auto;
	}

	.mrsong-sidebar__brand {
		flex: 1 1 auto;
		min-width: 0;
	}

	.mrsong-sidebar__brand {
		margin: 0 !important;
	}

	.mrsong-sidebar__brand .wp-block-site-title,
	.mrsong-sidebar__brand .wp-block-site-title a {
		font-size: 1.125rem !important;
		line-height: 1.3 !important;
		margin: 0 !important;
		white-space: nowrap;
		overflow: hidden;
		text-overflow: ellipsis;
	}

	.mrsong-sidebar__tagline {
		display: none !important;
	}

	.mrsong-nav-toggle {
		display: inline-flex;
		flex-direction: column;
		justify-content: center;
		align-items: center;
		gap: 5px;
		flex: 0 0 auto;
		width: 44px;
		height: 44px;
		margin: 0;
		padding: 0;
		border: none;
		background: transparent;
		cursor: pointer;
		-webkit-tap-highlight-color: transparent;
	}

	.mrsong-nav-toggle__bar {
		display: block;
		width: 22px;
		height: 2px;
		background: var(--wp--preset--color--primary, #000);
		transition: transform 0.2s ease, opacity 0.2s ease;
	}

	.mrsong-sidebar.is-nav-open .mrsong-nav-toggle__bar:nth-child(1) {
		transform: translateY(7px) rotate(45deg);
	}

	.mrsong-sidebar.is-nav-open .mrsong-nav-toggle__bar:nth-child(2) {
		opacity: 0;
	}

	.mrsong-sidebar.is-nav-open .mrsong-nav-toggle__bar:nth-child(3) {
		transform: translateY(-7px) rotate(-45deg);
	}

	.mrsong-nav-overlay {
		display: block;
		position: fixed;
		top: var(--mrsongMobileNavOffset);
		left: 0;
		right: 0;
		bottom: 0;
		background: rgb(0 0 0 / 0.35);
		z-index: 198;
		pointer-events: auto;
		cursor: pointer;
	}

	.mrsong-nav-overlay[hidden] {
		display: none !important;
	}

	.mrsong-sidebar__drawer {
		position: fixed;
		top: var(--mrsongMobileNavOffset);
		left: 0;
		right: 0;
		z-index: 199;
		max-height: min(70vh, 480px);
		overflow-y: auto;
		margin: 0;
		padding: calc(var(--mrsongUnit) * 3) calc(var(--mrsongUnit) * 2) calc(var(--mrsongUnit) * 4);
		background: var(--wp--preset--color--surface, #fff);
		border-top: none;
		border-bottom: var(--mrsongBorderHairline);
		box-shadow: 0 12px 24px rgb(0 0 0 / 0.08);
		flex: none;
		justify-content: flex-start;
		gap: calc(var(--mrsongUnit) * 1.5);
		opacity: 0;
		visibility: hidden;
		pointer-events: none;
		transition: opacity 0.2s ease, visibility 0.2s ease;
	}

	.mrsong-sidebar.is-nav-open .mrsong-sidebar__drawer {
		opacity: 1;
		visibility: visible;
		pointer-events: auto;
	}

	.mrsong-sidebar__nav {
		margin-top: 0;
		padding-top: 0;
		border-top: none;
	}

	.mrsong-sidebar__search {
		margin: calc(var(--mrsongUnit) * 1) 0 calc(var(--mrsongUnit) * 2.5);
		padding: 0;
		border-top: none;
	}

	.mrsong-sidebar__links {
		padding-top: calc(var(--mrsongUnit) * 2);
	}

	body.mrsong-nav-open {
		overflow: hidden;
	}

	.mrsong-layout > main,
	.mrsong-layout > .mrsong-main,
	.mrsong-layout > .wp-block-group.mrsong-main,
	main#wp--skip-link--target.mrsong-main {
		padding: var(--mrsongMainTopMobile) 0 var(--mrsongMarginMobile) !important;
	}
}