:root {
  --primary: #f97316;
  --accent: #6d4aff;
  --primary-light: rgba(249, 115, 22, 0.12);
  --radius: 18px;
  --space: 18px;
  --shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  --surface: #ffffff;
  --bg: #f7f8fa;
  --border: #e5e7eb;
  --text: #1a1a2e;
  --muted: #6b7280;
  --link-hover: #6d4aff;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--text); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary); }
ul, ol { list-style: none; }

.page-shell { width: min(1140px, calc(100% - 40px)); margin: 0 auto; padding: 20px 0 40px; }

.site-header {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 5px solid var(--primary);
  border-radius: var(--radius);
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  box-shadow: var(--shadow);
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand a { font-size: 22px; font-weight: 700; color: var(--text); letter-spacing: -0.3px; }
.brand a:hover { color: var(--primary); }

.hero {
  position: relative;
  overflow: hidden;
  background: var(--primary);
  border: none;
  border-radius: var(--radius);
  padding: 32px 28px;
  margin-top: var(--space);
  box-shadow: var(--shadow);
}
.hero > * { position: relative; z-index: 1; }
.hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 92px;
  height: 100%;
  background: var(--accent);
}
.hero h1 { font-size: 28px; font-weight: 700; line-height: 1.35; margin-bottom: 6px; color: #fff; }
.hero p, .hero .muted, .hero a { color: rgba(255,255,255,.92); }

.section-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 4px solid var(--accent);
  border-radius: var(--radius);
  margin-top: var(--space);
  padding: 20px 24px;
  box-shadow: var(--shadow);
}
.article-shell {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 6px solid var(--primary);
  border-radius: var(--radius);
  margin-top: var(--space);
  padding: 32px 28px;
  line-height: 1.85;
  box-shadow: var(--shadow);
}

.muted { color: var(--muted); font-size: 13px; }
.section-title {
  display: inline-flex;
  align-items: center;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space);
}
.layout-block-shell {
  display: grid;
  gap: var(--space);
}
.post-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow .25s, transform .25s;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.06);
}
.post-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,.07); transform: translateY(-2px); }
.post-cover {
  position: relative;
  padding-top: 56.25%;
  overflow: hidden;
  background: #f0f1f3;
}
.post-cover img {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s;
}
.post-card:hover .post-cover img { transform: scale(1.03); }
.post-card .content { padding: 16px 18px; border-top: 4px solid var(--primary); }
.post-card h3 { font-size: 16px; font-weight: 600; line-height: 1.5; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.post-card h3 a { color: var(--text); }
.post-card h3 a:hover { color: var(--primary); }
.post-card .muted { font-size: 13px; line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 8px; }
.post-card .content > span.muted { display: block; margin-top: 6px; font-size: 12px; color: #9ca3af; }
.compact-summary { -webkit-line-clamp: 1; }

.layout-block-feature_lead {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.layout-block-feature_lead .post-card:first-child {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(320px, 1.2fr) minmax(0, .9fr);
}
.layout-block-feature_lead .post-card:first-child .post-cover {
  padding-top: 0;
  min-height: 280px;
  height: 100%;
}

.layout-block-review_columns {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.layout-block-review_columns .post-card {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
}
.layout-block-review_columns .post-cover {
  padding-top: 0;
  height: 100%;
  min-height: 100%;
}
.layout-block-review_columns .content {
  border-top: none;
  border-left: 4px solid var(--primary);
}

.layout-block-archive_grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.layout-block-archive_grid .post-card:first-child {
  grid-column: span 2;
}
.layout-block-archive_grid .post-card:first-child .post-cover {
  padding-top: 42%;
}

.layout-block-text_stream,
.layout-block-related_text {
  display: block;
}
.layout-block-text_stream .post-card,
.layout-block-related_text .post-card {
  display: block;
  border: none;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}
.layout-block-text_stream .post-card:hover,
.layout-block-related_text .post-card:hover {
  transform: none;
  box-shadow: none;
}
.layout-block-text_stream .post-cover,
.layout-block-related_text .post-cover {
  display: none;
}
.layout-block-text_stream .content,
.layout-block-related_text .content {
  padding: 16px 0;
  border-top: none;
}

.layout-block-signal_board {
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, .8fr);
  gap: 16px;
}
.layout-block-signal_board .post-card:first-child {
  grid-row: span 3;
}
.layout-block-signal_board .post-card:first-child .post-cover {
  padding-top: 52%;
}
.layout-block-signal_board .signal-item:not(:first-child) {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}
.layout-block-signal_board .signal-item:not(:first-child) .post-cover {
  display: none;
}
.layout-block-signal_board .signal-item:not(:first-child) .content {
  border-top: none;
  padding: 14px 16px;
}

.layout-block-related_grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.layout-block-related_feature {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.layout-block-related_feature .post-card:first-child {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
}
.layout-block-related_feature .post-card:first-child .post-cover {
  padding-top: 0;
  min-height: 100%;
}
.layout-block-related_compact {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.layout-block-related_compact .post-cover {
  display: none;
}
.layout-block-related_compact .content {
  border-top: none;
  padding: 14px 16px;
}

.article-title { font-size: 26px; font-weight: 700; line-height: 1.4; margin-bottom: 12px; }
.meta-line { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; color: var(--muted); font-size: 13px; padding-bottom: 16px; margin-bottom: 20px; border-bottom: 1px solid var(--border); }
.meta-line span {
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary);
}
.article-summary { padding: 16px 20px; border-left: 3px solid var(--primary); background: #f9fafb; border-radius: 0 var(--radius) var(--radius) 0; margin-bottom: 20px; font-size: 15px; color: var(--muted); }
.article-body { font-size: 16px; line-height: 1.85; }
.article-body p { margin-bottom: 1.2em; }
.article-body img { border-radius: 8px; margin: 20px auto; display: block; max-width: 100%; height: auto; }
.article-hero-img { display: block; width: 100%; max-height: 420px; object-fit: cover; border-radius: var(--radius); margin-bottom: 24px; }

.notfound-hero {
  text-align: center;
  padding: 26px 24px;
}
.notfound-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 12px;
}
.notfound-hero h1 {
  margin: 0;
  font-size: 30px;
  line-height: 1.35;
  color: var(--text);
}
.notfound-hero p {
  max-width: 720px;
  margin: 12px auto 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.crumbs { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; font-size: 14px; color: var(--muted); }
.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--primary); }
.pagination { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; justify-content: center; padding: 8px 0; }
.pagination a, .pagination span { display: inline-block; padding: 6px 14px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; color: var(--text); }
.pagination a:hover { border-color: var(--primary); background: var(--primary); color: #fff; }

.prev-next {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: var(--space);
}
.prev-next > * { min-width: 0; }
.prev-next span, .prev-next a {
  display: block;
  min-width: 0;
  padding: 16px 18px;
  background: #fff7ed;
  border: 1px solid #fdba74;
  border-top: 3px solid var(--primary);
  border-radius: var(--radius);
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
  overflow-wrap: anywhere;
  word-break: break-word;
}
.prev-next a:hover {
  border-color: var(--primary);
  background: #ffedd5;
  color: var(--primary);
}

.related-list { margin-top: calc(var(--space) * 1.5); }
.footer-links { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; font-size: 13px; color: var(--muted); }

.site-footer {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 4px solid var(--accent);
  border-radius: var(--radius);
  margin-top: calc(var(--space) * 1.5);
  padding: 20px 24px;
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  box-shadow: var(--shadow);
}

.hidden-identity { display: none; }
.schema-json { display: none; }

@media (max-width: 860px) {
  .card-grid { grid-template-columns: 1fr; }
  .layout-block-feature_lead,
  .layout-block-review_columns,
  .layout-block-archive_grid,
  .layout-block-signal_board,
  .layout-block-related_grid,
  .layout-block-related_feature,
  .layout-block-related_compact { grid-template-columns: 1fr; }
  .layout-block-feature_lead .post-card:first-child,
  .layout-block-review_columns .post-card,
  .layout-block-related_feature .post-card:first-child { grid-template-columns: 1fr; }
  .hero h1 { font-size: 22px; }
  .article-title { font-size: 22px; }
  .article-shell { padding: 20px 16px; }
  .post-card .content { padding: 12px 14px; }
  .prev-next { grid-template-columns: 1fr; }
  .notfound-hero h1 { font-size: 22px; }
}
/* ═══ 单栏布局 - 横向图文混排卡片 ═══ */
.layout-single-clean .card-grid { grid-template-columns: 1fr; }
.layout-single-clean .post-card {
  display: grid;
  grid-template-columns: 240px 1fr;
  overflow: hidden;
}
.layout-single-clean .post-card .post-cover {
  padding-top: 0;
  height: 100%;
  min-height: 160px;
}
.layout-single-clean .post-card .content { padding: 18px 22px; display: flex; flex-direction: column; justify-content: center; }

/* ═══ 双栏布局 ═══ */
.two-column-wrap {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: calc(var(--space) * 1.2);
  margin-top: var(--space);
  align-items: start;
}
.two-column-wrap.reverse { grid-template-columns: 280px 1fr; }
.main-column { min-width: 0; }

.sidebar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 5px solid var(--primary);
  border-radius: var(--radius);
  padding: 20px;
  position: sticky;
  top: 20px;
  box-shadow: var(--shadow);
}
.sidebar-block { margin-bottom: 24px; }
.sidebar-block:last-child { margin-bottom: 0; }
.sidebar-title {
  margin: 0 0 12px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  padding: 8px 12px;
  border-radius: 10px;
  background: var(--accent);
  display: inline-flex;
}
.sidebar-list { margin: 0; padding: 0; }
.sidebar-list li {
  padding: 8px 0;
  border-bottom: 1px solid #f3f4f6;
  font-size: 14px;
  line-height: 1.55;
}
.sidebar-list li:last-child { border-bottom: none; }
.sidebar-list a { color: #374151; }
.sidebar-list a:hover { color: var(--primary); }

.layout-double-right .card-grid,
.layout-double-left .card-grid,
.layout-top-nav-sidebar .card-grid { grid-template-columns: 1fr; }
.layout-double-right .post-card,
.layout-double-left .post-card,
.layout-top-nav-sidebar .post-card {
  display: grid;
  grid-template-columns: 200px 1fr;
  overflow: hidden;
}
.layout-double-right .post-cover,
.layout-double-left .post-cover,
.layout-top-nav-sidebar .post-cover {
  padding-top: 0;
  height: 100%;
  min-height: 140px;
}
.layout-double-right .post-card .content,
.layout-double-left .post-card .content,
.layout-top-nav-sidebar .post-card .content {
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* ═══ Banner 布局 ═══ */
.hero-banner {
  margin-top: var(--space);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--primary);
  color: #fff;
  min-height: 180px;
  display: flex;
  align-items: center;
}
.banner-inner { padding: 36px 32px; width: 100%; position: relative; }
.banner-copy {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 20px;
  padding: 28px 24px;
}
.banner-display-title {
  margin: 0;
  font-size: 32px;
  line-height: 1.35;
  color: #fff;
  font-weight: 700;
  letter-spacing: .3px;
}
.banner-display-subtitle {
  margin: 10px auto 0;
  max-width: 620px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,.92);
}
.layout-banner-cards .card-grid { grid-template-columns: repeat(3, 1fr); }

.compact-hero {
  padding: 20px 24px !important;
  margin-top: var(--space);
}
.compact-hero h1 { font-size: 24px; margin: 0; }

/* ═══ 顶部导航条 ═══ */
.top-nav-header {
  display: flex !important;
  align-items: center;
  gap: 20px;
  padding: 0 24px !important;
  height: 52px;
  background: var(--primary);
  border-bottom: none;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.top-nav-brand { font-size: 18px; font-weight: 700; flex-shrink: 0; color: #fff; }
.top-nav-brand .brand { font-size: 18px; }
.top-nav-links { display: flex; gap: 20px; flex-wrap: wrap; }
.top-nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: #fff;
  padding: 6px 12px;
  border-radius: 999px;
  transition: color .2s, background-color .2s;
}
.top-nav-links a:hover { color: var(--primary); background: #fff; }
.wide-shell { width: min(1200px, calc(100% - 40px)); }

/* ═══ 极简布局 ═══ */
.narrow-shell { width: min(720px, calc(100% - 32px)); }
.minimal-header {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 28px 0 16px !important;
  border-bottom: 3px solid var(--primary) !important;
  border-radius: 0 !important;
}
.minimal-hero {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 24px 0 12px !important;
}
.minimal-hero h1 { font-size: 26px; }
.minimal-list { margin-top: var(--space); }
.minimal-list .post-card {
  display: block;
  border: none;
  border-bottom: 1px solid #f3f4f6;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}
.minimal-list .post-card:hover { transform: none; box-shadow: none; }
.minimal-list .post-card .post-cover { display: none; }
.minimal-list .post-card .content { padding: 16px 0; }
.minimal-list .post-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 4px; }
.minimal-list .post-card .muted { font-size: 13px; }
.minimal-footer {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  border-top: 3px solid var(--accent) !important;
  border-radius: 0 !important;
  padding: 20px 0 !important;
  margin-top: 40px !important;
}
.article-narrow { max-width: 720px; margin: 0 auto; }
.article-wide { max-width: 100%; }

/* ═══ 封面头条 ═══ */
.cover-focus-hero {
  margin-top: var(--space);
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(260px, .8fr);
  gap: 18px;
  align-items: stretch;
}
.cover-focus-copy,
.cover-focus-side {
  border-radius: var(--radius);
  padding: 28px 24px;
}
.cover-focus-copy {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow);
}
.cover-focus-copy h1,
.cover-focus-copy .muted,
.cover-focus-copy p { color: inherit; }
.cover-focus-side {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 6px solid var(--accent);
  box-shadow: var(--shadow);
}
.cover-focus-kicker {
  display: inline-flex;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}
.cover-article-head {
  background: var(--primary);
  border-radius: calc(var(--radius) - 2px);
  padding: 24px 24px 18px;
  margin-bottom: 24px;
}
.cover-article-head .article-title,
.cover-article-head .meta-line,
.cover-article-head .meta-line span { color: #fff; border-color: rgba(255,255,255,.24); background: transparent; }

/* ═══ 杂志编排 ═══ */
.editorial-lead {
  margin-top: var(--space);
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 10px solid var(--primary);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
}
.editorial-board,
.editorial-article-board {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 18px;
  margin-top: var(--space);
  align-items: start;
}
.editorial-side { display: grid; gap: 18px; }
.editorial-note {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 18px;
  box-shadow: var(--shadow);
}
.editorial-chip {
  display: inline-flex;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 10px;
}

/* ═══ 展陈拼贴 ═══ */
.showcase-strip {
  margin-top: var(--space);
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 18px;
  align-items: stretch;
}
.showcase-copy {
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius);
  padding: 30px 26px;
  box-shadow: var(--shadow);
}
.showcase-copy h1,
.showcase-copy .muted,
.showcase-copy p { color: inherit; }
.showcase-accent-block {
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 700;
  box-shadow: var(--shadow);
}
.showcase-main {
  margin-top: var(--space);
  background: transparent;
}
.showcase-main .card-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.showcase-main .post-card:nth-child(4n + 1),
.showcase-main .post-card:nth-child(4n + 4) {
  transform: translateY(16px);
}
.showcase-article-head {
  padding: 22px 24px;
  border-radius: calc(var(--radius) - 2px);
  background: var(--accent);
  color: #fff;
  margin-bottom: 20px;
}
.showcase-article-head .article-title,
.showcase-article-head .meta-line,
.showcase-article-head .meta-line span { color: #fff; border-color: rgba(255,255,255,.25); background: transparent; }

/* ═══ 框架门户 ═══ */
.framed-hero {
  margin-top: var(--space);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  position: relative;
}
.framed-hero::before,
.framed-hero::after {
  content: "";
  position: absolute;
  inset: 14px;
  border: 2px solid var(--primary);
  border-radius: calc(var(--radius) - 8px);
  pointer-events: none;
}
.framed-hero::after {
  inset: auto 20px 20px auto;
  width: 64px;
  height: 64px;
  border-color: var(--accent);
  background: var(--accent);
}
.framed-portal-shell { margin-top: var(--space); }
.framed-main,
.framed-article-shell {
  position: relative;
  overflow: hidden;
}
.framed-main::before,
.framed-article-shell::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 14px;
  height: 100%;
  background: var(--primary);
}
.framed-main > *,
.framed-article-shell > * { position: relative; z-index: 1; }

/* ═══ 导读摘要 ═══ */
.digest-lead {
  margin-top: var(--space);
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(260px, .75fr);
  gap: 18px;
}
.digest-main-copy,
.digest-side-copy {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px 22px;
}
.digest-main-copy { border-top: 4px solid var(--primary); }
.digest-side-copy { color: var(--muted); line-height: 1.8; }
.digest-article-head {
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

/* ═══ 评论双栏 ═══ */
.review-intro {
  margin-top: var(--space);
  background: #fff;
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius);
  padding: 24px 22px;
  box-shadow: var(--shadow);
}
.review-layout,
.article-review-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 18px;
  margin-top: var(--space);
  align-items: start;
}
.review-related-rail { position: static; }

/* ═══ 短讯流 ═══ */
.brief-shell { width: min(860px, calc(100% - 32px)); }
.brief-intro {
  margin-top: var(--space);
  padding: 10px 0 18px;
  border-bottom: 2px solid var(--primary);
}
.brief-list-shell { margin-top: var(--space); }
.layout-brief-stream .card-grid,
.reading-room-list .card-grid { display: block; }
.layout-brief-stream .post-card,
.reading-room-list .post-card {
  display: block;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  box-shadow: none;
}
.layout-brief-stream .post-card:hover,
.reading-room-list .post-card:hover { transform: none; box-shadow: none; }
.layout-brief-stream .post-cover,
.reading-room-list .post-cover { display: none; }
.layout-brief-stream .post-card .content,
.reading-room-list .post-card .content { padding: 16px 0; }
.brief-article-shell { max-width: 760px; margin: 0 auto; }

/* ═══ 目录橱窗 ═══ */
.archive-intro,
.summary-stack-head {
  margin-top: var(--space);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 22px;
  box-shadow: var(--shadow);
}
.archive-intro { border-top: 4px solid var(--primary); }
.archive-grid-shell,
.summary-stack-main { margin-top: var(--space); }
.archive-grid-shell .post-card {
  border-radius: calc(var(--radius) - 4px);
  overflow: hidden;
}
.archive-related-shell,
.summary-stack-summary {
  background: #f8fafc;
  border-radius: calc(var(--radius) - 4px);
  padding: 18px 16px;
}

/* ═══ 阅读室 ═══ */
.reading-room-shell { width: min(760px, calc(100% - 32px)); }
.reading-room-intro {
  margin-top: var(--space);
  padding: 12px 0 18px;
  border-bottom: 1px solid var(--border);
}
.reading-room-article {
  padding: 0;
  background: transparent;
  border: none;
  box-shadow: none;
}
.reading-room-article .article-title { font-size: 34px; line-height: 1.35; }
.reading-room-article .article-summary { font-size: 16px; line-height: 1.9; color: var(--muted); }

/* ═══ 栏目中枢 ═══ */
.section-hub-intro {
  margin-top: var(--space);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}
.section-hub-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 18px;
  margin-top: var(--space);
  align-items: start;
}

/* ═══ 主题窗口 ═══ */
.topic-window-head {
  margin-top: var(--space);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  position: relative;
}
.topic-window-head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 6px;
  background: var(--primary);
  border-radius: var(--radius) var(--radius) 0 0;
}
.topic-window-main { margin-top: var(--space); }
.topic-window-titlebar {
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--border);
}

/* ═══ 笔记分屏 ═══ */
.notebook-intro {
  margin-top: var(--space);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}
.notebook-layout,
.article-notebook-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 18px;
  margin-top: var(--space);
  align-items: start;
}
.notebook-main,
.notebook-article {
  background-image: linear-gradient(to bottom, transparent 0, transparent 35px, rgba(148,163,184,.14) 36px);
  background-size: 100% 36px;
}

/* ═══ 信号板 ═══ */
.signal-head {
  margin-top: var(--space);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  box-shadow: var(--shadow);
  border-left: 6px solid var(--accent);
}
.signal-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 18px;
  margin-top: var(--space);
  align-items: start;
}
.signal-main .card-grid { gap: 12px; }
.signal-main .post-card { border-radius: 14px; }

/* ═══ 新增 SEO 骨架 ═══ */
.portal-head,
.directory-head,
.article-focus-head,
.section-magazine-head,
.timeline-hero,
.mosaic-hero,
.lead-window-hero,
.campus-hero {
  margin-top: var(--space);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 24px;
  box-shadow: var(--shadow);
}
.portal-kicker {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .4px;
  background: var(--primary);
  color: #fff;
  margin-bottom: 12px;
}
.triple-portal-layout,
.campus-grid,
.article-focus-grid {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr) 240px;
  gap: 18px;
  margin-top: var(--space);
  align-items: start;
}
.article-triple-layout { align-items: start; }
.portal-main-card,
.campus-main-card,
.article-focus-list,
.timeline-main,
.news-mosaic-main,
.lead-window-list,
.section-magazine-main {
  overflow: hidden;
}
.portal-related-board,
.module-board,
.lead-window-side,
.directory-side,
.timeline-rail,
.news-mosaic-rail,
.lead-window-rail {
  display: grid;
  gap: 18px;
}
.twin-portal-head {
  border-top: 6px solid var(--primary);
  background: #fff;
}
.layout-twin-sidebar-portal .portal-main-card .card-grid,
.layout-article-focus .article-focus-list .card-grid {
  grid-template-columns: 1fr;
}
.layout-twin-sidebar-portal .portal-main-card .post-card,
.layout-article-focus .article-focus-list .post-card {
  display: grid;
  grid-template-columns: 220px 1fr;
  overflow: hidden;
}
.layout-twin-sidebar-portal .portal-main-card .post-cover,
.layout-article-focus .article-focus-list .post-cover {
  padding-top: 0;
  min-height: 150px;
  height: 100%;
}
.layout-twin-sidebar-portal .portal-main-card .content,
.layout-article-focus .article-focus-list .content {
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.campus-band {
  margin-top: var(--space);
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) 320px;
  gap: 18px;
  align-items: stretch;
}
.campus-hero {
  border-top: 6px solid var(--primary);
}
.campus-note {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 24px 22px;
  box-shadow: var(--shadow);
}
.campus-note h3,
.campus-note p { color: inherit; }
.layout-campus-portal .campus-main-card .layout-block-signal_board {
  gap: 12px;
}
.lead-window-head,
.news-mosaic-head,
.timeline-digest-head {
  margin-top: var(--space);
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) 300px;
  gap: 18px;
  align-items: start;
}
.headline-window-layout,
.article-lead-window-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 18px;
  margin-top: var(--space);
  align-items: start;
}
.lead-window-hero,
.mosaic-hero,
.timeline-hero {
  border-left: 8px solid var(--primary);
}
.lead-window-hero-full {
  margin-top: var(--space);
}
.lead-window-side > .sidebar,
.lead-window-rail > .sidebar,
.news-mosaic-rail > .sidebar,
.timeline-rail > .sidebar,
.directory-side > .sidebar {
  position: static;
}
.section-magazine-modules {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: var(--space);
}
.layout-section-magazine .module-board > .sidebar {
  position: static;
}
.directory-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 18px;
  margin-top: var(--space);
  align-items: start;
}
.layout-link-directory .layout-block-text_stream {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.layout-link-directory .layout-block-text_stream .post-card {
  display: block;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  background: #fff;
  box-shadow: var(--shadow);
}
.layout-link-directory .layout-block-text_stream .content { padding: 0; }
.layout-link-directory .layout-block-text_stream .muted:first-of-type {
  display: none;
}
.layout-link-directory .layout-block-text_stream h3 {
  font-size: 16px;
  line-height: 1.6;
}
.layout-news-mosaic .news-mosaic-main .layout-block-archive_grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.layout-news-mosaic .news-mosaic-main .archive-item:first-child {
  grid-column: span 2;
}
.article-focus-article-grid {
  grid-template-columns: 260px minmax(0, 1fr) 300px;
}
.article-focus-article,
.portal-article-main,
.campus-article-main,
.directory-article-main,
.lead-window-article,
.mosaic-article-main,
.timeline-article,
.section-magazine-article {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.layout-timeline-digest .timeline-main .layout-block-text_stream .post-card {
  border-left: 4px solid var(--primary);
  border-radius: 0 14px 14px 0;
  padding-left: 14px;
}
.layout-timeline-digest .timeline-main .layout-block-text_stream .post-card .content {
  padding: 14px 16px;
}
.layout-timeline-digest .timeline-main .layout-block-text_stream .muted:first-of-type {
  max-width: 48ch;
}

/* ═══ 8 套新增高差异骨架 ═══ */
.forum-ribbon,
.news-wire-head,
.press-hub-head,
.insight-head,
.journal-hero,
.docs-hero,
.community-hero {
  margin-top: var(--space);
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) 300px;
  gap: 18px;
  align-items: stretch;
}
.forum-ribbon-main,
.news-wire-hero,
.press-hub-hero,
.insight-hero,
.journal-hero-main,
.docs-hero-main,
.community-hero-main {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 24px;
  box-shadow: var(--shadow);
}
.forum-ribbon-main { border-top: 8px solid #dc2626; }
.news-wire-hero { border-top: 8px solid #1d4ed8; }
.press-hub-hero { border-top: 8px solid #7c3aed; }
.insight-hero { border-top: 8px solid #ea580c; }
.journal-hero-main { border-top: 8px solid #0f766e; }
.docs-hero-main { border-top: 8px solid #0f172a; }
.community-hero-main { border-top: 8px solid #be123c; }
.forum-ribbon-note,
.news-wire-note,
.press-hub-note,
.insight-note,
.journal-hero-note,
.docs-hero-note,
.community-hero-note,
.tech-channel-note {
  border-radius: var(--radius);
  padding: 24px 22px;
  box-shadow: var(--shadow);
  color: #fff;
}
.forum-ribbon-note { background: #dc2626; }
.news-wire-note { background: #1d4ed8; }
.press-hub-note { background: #7c3aed; }
.insight-note { background: #ea580c; }
.journal-hero-note { background: #0f766e; }
.docs-hero-note { background: #0f172a; }
.community-hero-note { background: #be123c; }
.tech-channel-note { background: #06b6d4; }
.forum-ribbon-note strong,
.news-wire-note strong,
.press-hub-note strong,
.insight-note strong,
.journal-hero-note strong,
.docs-hero-note strong,
.community-hero-note strong,
.tech-channel-note strong {
  display: block;
  font-size: 18px;
  margin-bottom: 10px;
  color: inherit;
}
.forum-ribbon-note p,
.news-wire-note p,
.press-hub-note p,
.insight-note p,
.journal-hero-note p,
.docs-hero-note p,
.community-hero-note p,
.tech-channel-note p {
  color: inherit;
  margin: 0;
}

.forum-home-grid,
.forum-article-layout,
.press-hub-grid,
.press-article-layout,
.community-article-layout,
.insight-grid,
.insight-article-layout {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr) 280px;
  gap: 18px;
  margin-top: var(--space);
  align-items: start;
}
.forum-side,
.press-hub-side,
.insight-side,
.news-wire-side,
.journal-side,
.docs-nav,
.docs-side,
.tech-channel-left,
.tech-channel-right,
.community-side {
  display: grid;
  gap: 18px;
}
.forum-side > .sidebar,
.press-hub-side > .sidebar,
.insight-side > .sidebar,
.news-wire-side > .sidebar,
.journal-side > .sidebar,
.docs-nav > .sidebar,
.docs-side > .sidebar,
.tech-channel-left > .sidebar,
.tech-channel-right > .sidebar,
.community-side > .sidebar {
  position: static;
}
.layout-forum-board .forum-main-list .card-grid,
.layout-community-stack .community-main-list .card-grid,
.layout-blog-journal .journal-list .card-grid {
  grid-template-columns: 1fr;
}
.layout-forum-board .forum-main-list .post-card,
.layout-community-stack .community-main-list .post-card,
.layout-blog-journal .journal-list .post-card {
  display: grid;
  grid-template-columns: 220px 1fr;
  overflow: hidden;
}
.layout-forum-board .forum-main-list .post-cover,
.layout-community-stack .community-main-list .post-cover,
.layout-blog-journal .journal-list .post-cover {
  padding-top: 0;
  min-height: 150px;
  height: 100%;
}
.layout-forum-board .forum-main-list .content,
.layout-community-stack .community-main-list .content,
.layout-blog-journal .journal-list .content {
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.news-wire-layout,
.news-wire-article-layout,
.journal-layout,
.journal-article-layout,
.community-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 18px;
  margin-top: var(--space);
  align-items: start;
}
.news-wire-main,
.journal-main,
.community-main { min-width: 0; }
.news-wire-article-head,
.insight-article-head,
.tech-article-head {
  margin-bottom: 16px;
  padding: 18px 20px;
  border-radius: 18px;
  color: #fff;
}
.news-wire-article-head { background: #1d4ed8; }
.insight-article-head { background: #ea580c; }
.tech-article-head { background: #0f172a; }
.news-wire-article-head .article-title,
.insight-article-head .article-title,
.tech-article-head .article-title,
.news-wire-article-head .meta-line,
.insight-article-head .meta-line,
.tech-article-head .meta-line {
  color: inherit;
}
.layout-news-wire .news-wire-list .layout-block-feature_lead .post-card:first-child,
.layout-insight-portal .insight-list .layout-block-feature_lead .post-card:first-child {
  border-top: 6px solid var(--primary);
}

.tech-channel-hero {
  margin-top: var(--space);
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) 320px;
  gap: 18px;
  align-items: stretch;
}
.tech-channel-copy {
  background: #0f172a;
  color: #fff;
  border-radius: var(--radius);
  padding: 28px 26px;
  box-shadow: var(--shadow);
}
.tech-channel-copy .portal-kicker {
  background: #06b6d4;
}
.tech-channel-copy .hero-banner,
.tech-channel-copy .banner-display-title,
.tech-channel-copy .banner-display-subtitle,
.tech-channel-copy p,
.tech-channel-copy h1,
.tech-channel-copy h2,
.tech-channel-copy h3 {
  color: #fff;
}
.tech-channel-grid,
.tech-article-layout,
.docs-layout,
.docs-article-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr) 280px;
  gap: 18px;
  margin-top: var(--space);
  align-items: start;
}
.layout-tech-channel .tech-channel-list .layout-block-signal_board {
  gap: 12px;
}
.layout-tech-channel .signal-item {
  border-left: 5px solid #06b6d4;
}

.journal-hero-note,
.community-accent-module {
  border: none;
}
.community-modules {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: var(--space);
}
.community-accent-module {
  background: #fff1f2;
  border: 1px solid #fecdd3;
}

.docs-hero-note {
  border: 1px solid rgba(255, 255, 255, 0.12);
}
.layout-dev-docs .docs-list .layout-block-text_stream .post-card {
  border-left: 4px solid #0f172a;
  border-radius: 0 14px 14px 0;
  padding-left: 12px;
}
.layout-dev-docs .docs-list .layout-block-text_stream .content {
  padding: 14px 16px;
}

.layout-press-hub .press-hub-list .layout-block-archive_grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.layout-press-hub .press-hub-list .archive-item:first-child {
  grid-column: span 2;
}

.journal-article-main,
.news-wire-article-main,
.tech-article-main,
.press-article-main,
.docs-article-main,
.community-article-main,
.insight-article-main,
.forum-article-main {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* ═══ 响应式 ═══ */
@media (max-width: 960px) {
  .two-column-wrap,
  .two-column-wrap.reverse { grid-template-columns: 1fr !important; }
  .sidebar { position: static; }
  .layout-banner-cards .card-grid { grid-template-columns: 1fr 1fr !important; }
  .top-nav-header { height: auto; flex-wrap: wrap; padding: 12px 20px !important; }
  .wide-shell { width: calc(100% - 32px); }
  .cover-focus-hero,
  .editorial-board,
  .editorial-article-board,
  .showcase-strip,
  .digest-lead,
  .review-layout,
  .article-review-layout,
  .section-hub-layout,
  .notebook-layout,
  .article-notebook-layout,
  .signal-layout,
  .triple-portal-layout,
  .campus-band,
  .campus-grid,
  .lead-window-head,
  .headline-window-layout,
  .article-lead-window-layout,
  .section-magazine-modules,
  .directory-layout,
  .article-focus-grid,
  .timeline-digest-head,
  .forum-ribbon,
  .forum-home-grid,
  .forum-article-layout,
  .news-wire-head,
  .news-wire-layout,
  .news-wire-article-layout,
  .tech-channel-hero,
  .tech-channel-grid,
  .tech-article-layout,
  .journal-hero,
  .journal-layout,
  .journal-article-layout,
  .press-hub-head,
  .press-hub-grid,
  .press-article-layout,
  .docs-hero,
  .docs-layout,
  .docs-article-layout,
  .community-hero,
  .community-layout,
  .community-modules,
  .community-article-layout,
  .insight-head,
  .insight-grid,
  .insight-article-layout { grid-template-columns: 1fr !important; }
  .showcase-main .card-grid { grid-template-columns: 1fr 1fr !important; }
  .layout-link-directory .layout-block-text_stream,
  .layout-news-mosaic .news-mosaic-main .layout-block-archive_grid,
  .layout-press-hub .press-hub-list .layout-block-archive_grid { grid-template-columns: 1fr 1fr !important; }
  .showcase-main .post-card:nth-child(4n + 1),
  .showcase-main .post-card:nth-child(4n + 4) { transform: none; }
}
@media (max-width: 640px) {
  .layout-banner-cards .card-grid { grid-template-columns: 1fr !important; }
  .layout-single-clean .post-card,
  .layout-double-right .post-card,
  .layout-double-left .post-card,
  .layout-top-nav-sidebar .post-card,
  .layout-twin-sidebar-portal .portal-main-card .post-card,
  .layout-article-focus .article-focus-list .post-card,
  .layout-forum-board .forum-main-list .post-card,
  .layout-community-stack .community-main-list .post-card,
  .layout-blog-journal .journal-list .post-card {
    grid-template-columns: 1fr;
  }
  .layout-single-clean .post-cover,
  .layout-double-right .post-cover,
  .layout-double-left .post-cover,
  .layout-top-nav-sidebar .post-cover,
  .layout-twin-sidebar-portal .portal-main-card .post-cover,
  .layout-article-focus .article-focus-list .post-cover,
  .layout-forum-board .forum-main-list .post-cover,
  .layout-community-stack .community-main-list .post-cover,
  .layout-blog-journal .journal-list .post-cover {
    padding-top: 52%;
    min-height: 0;
    height: auto;
  }
  .banner-display-title { font-size: 24px; }
  .banner-display-subtitle { font-size: 13px; }
  .banner-inner { padding: 24px 20px; }
  .banner-copy { padding: 20px 16px; }
  .showcase-main .card-grid,
  .layout-link-directory .layout-block-text_stream,
  .layout-news-mosaic .news-mosaic-main .layout-block-archive_grid,
  .layout-press-hub .press-hub-list .layout-block-archive_grid,
  .section-magazine-modules,
  .community-modules { grid-template-columns: 1fr !important; }
}