:root {
  --fn-bg: #07111c;
  --fn-bg-2: #0b1626;
  --fn-panel: rgba(9, 20, 34, 0.90);
  --fn-panel-strong: rgba(5, 14, 26, 0.97);
  --fn-line: rgba(52, 236, 255, 0.18);
  --fn-line-strong: rgba(52, 236, 255, 0.38);
  --fn-text: #d6ecff;
  --fn-muted: #7f9bb7;
  --fn-accent: #34ecff;
  --fn-accent-2: #7a7dff;
  --fn-accent-3: #93ffb8;
  --fn-shadow: 0 0 0 1px rgba(52,236,255,.08), 0 0 30px rgba(52,236,255,.08);
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at left top, rgba(122,125,255,.16), transparent 28%),
    radial-gradient(circle at right top, rgba(52,236,255,.12), transparent 24%),
    linear-gradient(180deg, #050b14 0%, #07111c 45%, #091522 100%);
  color: var(--fn-text);
  font-family: 'Source Sans Pro', 'PingFang SC', Arial, sans-serif;
}

body:before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: .28;
}

h1,
h2,
h3,
h4 {
  margin-top: 0;
  color: #ebf8ff;
}

a {
  color: var(--fn-accent);
  text-decoration: none;
  transition: color .2s ease, opacity .2s ease, transform .2s ease;
}

a:hover {
  color: #9cf7ff;
}

img {
  max-width: 100%;
}

.fn-hidden {
  display: none;
}

.fn-container {
  width: 100%;
}

.fn-app {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr) 320px;
  gap: 24px;
  width: min(1600px, calc(100% - 32px));
  margin: 20px auto;
  align-items: start;
  overflow-x: hidden;
}

.fn-left-rail,
.fn-right-rail {
  position: sticky;
  top: 20px;
  display: grid;
  gap: 18px;
  min-width: 0;
  overflow: hidden;
}

.fn-stage {
  min-width: 0;
  overflow: hidden;
}

.fn-main {
  display: grid;
  gap: 22px;
  min-width: 0;
}

.fn-panel,
.fn-card,
.fn-sidebar-block,
.fn-tags-hot,
.fn-content-shell,
.fn-article-shell,
.fn-tag-shell,
.fn-search-shell,
.fn-diy-shell,
.fn-so-shell,
.fn-footer,
.fn-side-panel,
.fn-rail-header,
.fn-home-primary,
.fn-home-secondary,
.fn-channel-intro,
.fn-channel-aside {
  background: var(--fn-panel);
  border: 1px solid var(--fn-line);
  box-shadow: var(--fn-shadow);
  border-radius: 20px;
  backdrop-filter: blur(12px);
}

.fn-stage-strip {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  margin-bottom: 22px;
  padding: 16px 18px;
  background: var(--fn-panel-strong);
  border: 1px solid var(--fn-line);
  border-radius: 18px;
  box-shadow: var(--fn-shadow);
}

.fn-stage-strip-label,
.fn-side-title,
.fn-panel-title,
.fn-section-title,
.fn-sidebar-header,
.fn-rail-meta-title {
  color: var(--fn-accent);
  text-transform: uppercase;
  letter-spacing: .14em;
  font-size: 12px;
  font-weight: 700;
}

.fn-stage-strip-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  overflow: hidden;
}

.fn-stage-strip-links a {
  color: var(--fn-text);
  opacity: .88;
  font-size: 14px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
}

.fn-rail-header {
  padding: 22px 18px;
}

.fn-rail-brand a {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #f4fbff;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.1;
}

.fn-rail-brand a:before {
  content: "";
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--fn-accent), var(--fn-accent-2));
  box-shadow: 0 0 14px rgba(52,236,255,.95);
}

.fn-rail-brand p {
  margin: 12px 0 0;
  color: #b6d0e5;
  line-height: 1.7;
  font-size: 14px;
}

.fn-menu-toggle {
  display: none;
  width: 100%;
  min-height: 42px;
  margin: 18px 0 0;
  border-radius: 12px;
  border: 1px solid rgba(52,236,255,.22);
  background: rgba(255,255,255,.03);
  color: var(--fn-text);
}

.fn-rail-menu {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

.fn-rail-menu a {
  display: flex;
  align-items: center;
  min-height: 42px;
  padding: 0 14px;
  border-radius: 12px;
  border: 1px solid rgba(52,236,255,.14);
  background: rgba(255,255,255,.02);
  color: var(--fn-text);
}

.fn-rail-menu a:hover,
.fn-rail-home {
  border-color: var(--fn-line-strong);
  box-shadow: 0 0 0 1px rgba(52,236,255,.08) inset;
}

.fn-rail-meta {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid rgba(52,236,255,.12);
}

.fn-rail-meta-value {
  margin-top: 6px;
  font-size: 30px;
  font-weight: 700;
  color: #f0fbff;
}

.fn-shell {
  display: grid;
  gap: 22px;
  min-width: 0;
  overflow: hidden;
}

.fn-home-shell,
.fn-channel-shell,
.fn-search-layout,
.fn-tag-layout,
.fn-so-layout,
.fn-diy-layout {
  min-width: 0;
}

.fn-home-lead {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) 340px;
  gap: 22px;
}

.fn-home-primary,
.fn-home-secondary,
.fn-channel-intro,
.fn-channel-aside {
  padding: 24px;
}

.fn-home-secondary,
.fn-channel-aside {
  display: grid;
  gap: 18px;
}

.fn-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 28px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(52,236,255,.10);
  border: 1px solid rgba(52,236,255,.18);
  color: var(--fn-accent);
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: .14em;
  font-weight: 700;
}

.fn-kicker:before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--fn-accent);
  box-shadow: 0 0 10px rgba(52,236,255,1);
}

.fn-page-head {
  display: grid;
  gap: 12px;
  padding: 22px 24px;
  background: linear-gradient(135deg, rgba(52,236,255,.08), rgba(122,125,255,.10));
  border: 1px solid rgba(52,236,255,.16);
  border-radius: 20px;
  box-shadow: var(--fn-shadow);
}

.fn-page-kicker {
  justify-self: start;
}

.fn-page-head h1 {
  margin: 0;
  font-size: 34px;
  line-height: 1.12;
  color: #f2fbff;
}

.fn-page-head p {
  margin: 0;
  max-width: 760px;
  color: #b8d4ea;
  line-height: 1.8;
}

.fn-article-head {
  display: grid;
  gap: 14px;
  padding: 22px 24px;
  background: linear-gradient(135deg, rgba(52,236,255,.07), rgba(122,125,255,.08));
  border: 1px solid rgba(52,236,255,.16);
  border-radius: 20px;
  box-shadow: var(--fn-shadow);
}

.fn-article-kicker {
  justify-self: start;
}

.fn-article-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
}

.fn-detail-section {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid rgba(52,236,255,.14);
}

.fn-article-nav {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

.fn-article-nav-card {
  flex: 1;
  padding: 16px 18px;
  border: 1px solid rgba(52,236,255,.14);
  border-radius: 16px;
  background: rgba(255,255,255,.025);
}

.fn-article-nav-card.next {
  text-align: right;
}

.fn-article-nav-label {
  margin-bottom: 6px;
  color: var(--fn-muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .12em;
  font-weight: 700;
}

.fn-empty-card {
  padding: 24px;
  border: 1px dashed rgba(52,236,255,.22);
  border-radius: 18px;
  background: rgba(255,255,255,.025);
  text-align: center;
}

.fn-empty-card h4 {
  margin: 0 0 8px;
  font-size: 20px;
  color: #f0fbff;
}

.fn-empty-card p {
  margin: 0;
  color: var(--fn-muted);
  line-height: 1.7;
}

.fn-home-title,
.fn-hero-title,
.fn-article-title {
  margin: 16px 0 12px;
  font-size: 46px;
  line-height: 1.06;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.fn-home-summary,
.fn-hero-desc,
.fn-card-desc,
.fn-feed-desc,
.fn-panel-text,
.fn-result-desc,
.fn-tag-desc,
.fn-article-content {
  color: #b8d4ea;
  line-height: 1.8;
}

.fn-home-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.fn-meta,
.fn-card-meta,
.fn-side-meta,
.fn-list-meta,
.fn-article-meta,
.fn-result-desc,
.fn-tag-desc,
.fn-breadcrumb,
.fn-breadcrumb a,
.fn-breadcrumb li {
  color: var(--fn-muted);
  font-size: 13px;
}

.fn-hero-btn,
.fn-btn-outline,
.fn-form-btn,
.fn-side-search button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 12px;
  font-weight: 700;
  border: 0;
}

.fn-hero-btn,
.fn-form-btn,
.fn-side-search button {
  color: #04111b;
  background: linear-gradient(135deg, var(--fn-accent), var(--fn-accent-2));
}

.fn-btn-outline {
  border: 1px solid rgba(52,236,255,.18);
  color: var(--fn-text);
  background: rgba(255,255,255,.03);
}

.fn-chip-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.fn-link-chip {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid rgba(52,236,255,.15);
  border-radius: 10px;
  background: rgba(255,255,255,.03);
  color: var(--fn-text);
  font-size: 13px;
}

.fn-river-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 22px;
}

.fn-content-shell,
.fn-article-shell,
.fn-tag-shell,
.fn-search-shell,
.fn-diy-shell,
.fn-so-shell,
.fn-side-panel,
.fn-tags-hot {
  padding: 20px;
  min-width: 0;
  overflow: hidden;
}

.fn-section-title,
.fn-sidebar-header,
.fn-panel-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(52,236,255,.14);
}

.fn-feed-list,
.fn-search-results,
.fn-diy-grid,
.fn-stack-cards {
  display: grid;
  gap: 16px;
}

.fn-feed-item {
  display: grid;
  grid-template-columns: 70px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 0 0 16px;
  border-bottom: 1px solid rgba(52,236,255,.10);
}

.fn-feed-item:last-child,
.fn-result-item:last-child,
.fn-tag-entry:last-child,
.fn-list-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.fn-feed-index {
  font-size: 30px;
  line-height: 1;
  color: rgba(52,236,255,.45);
  font-weight: 700;
}

.fn-feed-title,
.fn-card-title,
.fn-list-title {
  margin: 8px 0 10px;
  font-size: 24px;
  line-height: 1.2;
}

.fn-stack-card {
  overflow: hidden;
  border: 1px solid rgba(52,236,255,.12);
  border-radius: 16px;
  background: rgba(255,255,255,.02);
}

.fn-stack-thumb {
  display: block;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.fn-stack-thumb img,
.fn-list-thumb img,
.fn-card-image img,
.fn-feature-thumb img,
.fn-feed-thumb img,
.fn-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .35s ease;
}

.fn-stack-thumb:hover img,
.fn-list-thumb:hover img,
.fn-card-image:hover img,
.fn-feature-thumb:hover img,
.fn-feed-thumb:hover img,
.fn-hero-media:hover img {
  transform: scale(1.04);
}

.fn-stack-body {
  padding: 14px 16px 16px;
}

.fn-side-list,
.fn-sidebar-list,
.fn-tags-hot ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.fn-side-list li,
.fn-sidebar-list li,
.fn-tags-hot li {
  padding: 0 0 12px;
  margin: 0 0 12px;
  border-bottom: 1px dashed rgba(52,236,255,.14);
}

.fn-side-list li:last-child,
.fn-sidebar-list li:last-child,
.fn-tags-hot li:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: 0;
}

.fn-side-list a,
.fn-sidebar-list a,
.fn-tags-hot a {
  color: var(--fn-text);
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
  white-space: nowrap;
}

.fn-side-list span,
.fn-date {
  display: block;
  margin-top: 6px;
  color: var(--fn-muted);
  font-size: 12px;
}

.fn-side-search,
.fn-search-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
}

.fn-side-search input,
.fn-search-form input,
.fn-form-input {
  min-width: 0;
  height: 42px;
  padding: 0 14px;
  border-radius: 12px;
  border: 1px solid rgba(52,236,255,.18);
  background: rgba(255,255,255,.03);
  color: var(--fn-text);
  outline: none;
}

.fn-search-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 420px);
  gap: 18px;
  align-items: end;
  margin-bottom: 18px;
}

.fn-result-item,
.fn-tag-entry {
  padding: 16px 0;
  border-bottom: 1px solid rgba(52,236,255,.10);
}

.fn-tag-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 18px;
}

.fn-channel-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 22px;
  align-items: start;
}

/* Channel Header V2 - compact horizontal layout */
.fn-channel-head-v2 {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 20px;
  align-items: start;
  padding: 20px;
  background: var(--fn-panel);
  border: 1px solid var(--fn-line);
  box-shadow: var(--fn-shadow);
  border-radius: 20px;
  backdrop-filter: blur(12px);
}

.fn-channel-head-left {
  min-width: 0;
}

.fn-channel-name {
  margin: 12px 0 0;
  font-size: 32px;
  line-height: 1.15;
  color: #ebf8ff;
  font-weight: 700;
}

.fn-channel-desc {
  margin: 10px 0 0;
  color: var(--fn-muted);
  font-size: 14px;
  line-height: 1.7;
}

.fn-channel-head-right {
  min-width: 0;
}

.fn-channel-head-right .fn-side-panel {
  margin: 0;
}

.fn-channel-head-right .fn-side-list li {
  font-size: 13px;
}

.fn-list-item {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  padding: 16px 0;
  border-bottom: 1px solid rgba(52,236,255,.10);
}

.fn-list-thumb {
  display: block;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-radius: 14px;
}

.fn-breadcrumb {
  margin-bottom: 0;
}

.fn-article-shell {
  padding: 24px;
  min-width: 0;
  overflow: hidden;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.fn-article-cover {
  margin: 18px 0 22px;
  border-radius: 16px;
  overflow: hidden;
}

.fn-article-content {
  font-size: 17px;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.fn-article-content > :first-child {
  margin-top: 0 !important;
}

.fn-article-content img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  margin: 18px 0;
  display: block;
}

.fn-article-content h1,
.fn-article-content h2,
.fn-article-content h3,
.fn-article-content h4,
.fn-article-content h5,
.fn-article-content h6 {
  color: #ebf8ff;
  font-weight: 700;
  margin: 32px 0 14px;
  line-height: 1.3;
}

.fn-article-content h1 { font-size: 28px; }
.fn-article-content h2 { font-size: 24px; border-bottom: 1px solid rgba(52,236,255,.12); padding-bottom: 8px; }
.fn-article-content h3 { font-size: 20px; }
.fn-article-content h4 { font-size: 18px; }

.fn-article-content p,
.fn-article-content div {
  margin: 0 0 16px;
  line-height: 1.8;
}

.fn-article-content a {
  color: var(--fn-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.fn-article-content a:hover {
  color: #9cf7ff;
}

.fn-article-content b,
.fn-article-content strong {
  font-weight: 700;
  color: #ebf8ff;
}

.fn-article-content i,
.fn-article-content em {
  font-style: italic;
}

.fn-article-content ul,
.fn-article-content ol {
  list-style: disc outside none;
  margin: 14px 0;
  padding: 0 0 0 28px;
  line-height: 1.8;
}

.fn-article-content ol {
  list-style: decimal;
}

.fn-article-content ul ul,
.fn-article-content ol ul {
  list-style: circle outside none;
}

.fn-article-content ul ul ul,
.fn-article-content ol ul ul {
  list-style: square outside none;
}

.fn-article-content ul ul,
.fn-article-content ol ul,
.fn-article-content ul ol,
.fn-article-content ol ol {
  padding-left: 24px;
}

.fn-article-content li {
  margin-bottom: 6px;
}

.fn-article-content blockquote {
  border-left: 4px solid var(--fn-accent);
  padding: 14px 20px;
  margin: 20px 0;
  background: rgba(52,236,255,.04);
  border-radius: 0 12px 12px 0;
  color: #b8d4ea;
}

.fn-article-content blockquote > :first-child {
  margin-top: 0;
}

.fn-article-content blockquote > :last-child {
  margin-bottom: 0;
}

.fn-article-content code {
  display: inline;
  padding: 2px 6px;
  margin: 0 3px;
  background: rgba(52,236,255,.08);
  border-radius: 4px;
  font-size: 14px;
  font-family: 'Consolas', 'Monaco', 'Liberation Mono', monospace;
  color: var(--fn-accent);
}

.fn-article-content pre {
  padding: 18px 20px;
  margin: 20px 0;
  display: block;
  line-height: 1.6;
  background: rgba(0,0,0,.4);
  border: 1px solid rgba(52,236,255,.10);
  border-radius: 12px;
  font-size: 14px;
  font-family: 'Consolas', 'Monaco', 'Liberation Mono', monospace;
  white-space: pre;
  word-wrap: normal;
  overflow-x: auto;
  color: var(--fn-accent);
}

.fn-article-content pre code {
  display: block;
  padding: 0;
  margin: 0;
  background: none;
  border-radius: 0;
  color: inherit;
}

.fn-article-content hr {
  display: block;
  height: 0;
  border: 0;
  border-top: 1px solid rgba(52,236,255,.14);
  margin: 24px 0;
  padding: 0;
}

.fn-article-content table {
  width: 100%;
  table-layout: fixed;
  border-collapse: collapse;
  border-spacing: 0;
  margin: 20px 0;
  overflow-x: auto;
  display: block;
}

.fn-article-content thead {
  background: rgba(52,236,255,.06);
}

.fn-article-content td,
.fn-article-content th {
  min-width: 60px;
  height: 36px;
  border: 1px solid rgba(52,236,255,.12);
  vertical-align: top;
  padding: 8px 12px;
  text-align: left;
  box-sizing: border-box;
}

.fn-article-content th {
  font-weight: 700;
  color: var(--fn-accent);
}

.fn-article-content u {
  text-decoration: underline;
}

.fn-article-content strike,
.fn-article-content del {
  text-decoration: line-through;
}

/* Article tags chips */
.fn-article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* Prev/Next nav responsive */
.fn-article-shell .fn-nav-row,
.fn-article-nav {
  flex-wrap: wrap;
}


.fn-pagination,
.pagination {
  margin-top: 20px;
}

.fn-pagination {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  margin: 0;
  padding: 0 12px;
  border-radius: 10px;
  border: 1px solid rgba(52,236,255,.18);
  background: rgba(255,255,255,.03);
  color: var(--fn-text);
}

.pagination a:hover,
.pagination span {
  border-color: var(--fn-line-strong);
  background: rgba(52,236,255,.12);
  color: #f0fbff;
}

.fn-footer {
  padding: 20px;
}

.fn-footer p {
  margin: 6px 0;
  text-align: center;
  color: var(--fn-muted);
}

.fn-footer p a {
  color: var(--fn-accent);
}

.fn-footer-links {
  text-align: center;
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(52,236,255,.10);
}

.fn-footer-label {
  color: var(--fn-muted);
  font-size: 13px;
  margin-right: 8px;
}

.fn-footer-links a {
  color: var(--fn-text);
  font-size: 13px;
  margin: 0 6px;
  opacity: .8;
}

.fn-footer-links a:hover {
  color: var(--fn-accent);
  opacity: 1;
}

.fn-scroll-top {
  position: fixed;
  right: 22px;
  bottom: 24px;
  z-index: 50;
  width: 46px;
  height: 46px;
  border: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--fn-accent), var(--fn-accent-2));
  color: #031019;
  box-shadow: 0 0 20px rgba(52,236,255,.3);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: .25s ease;
}

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

@media (max-width: 1400px) {
  .fn-app {
    grid-template-columns: 230px minmax(0, 1fr) 280px;
  }
}

@media (max-width: 1180px) {
  .fn-app {
    grid-template-columns: 220px minmax(0, 1fr);
  }

  .fn-right-rail {
    position: static;
    grid-column: 1 / -1;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .fn-home-lead,
  .fn-river-layout,
  .fn-channel-head,
  .fn-channel-head-v2,
  .fn-search-head,
  .fn-tag-grid,
  .fn-stage-strip {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 991px) {
  .fn-app {
    width: min(100% - 20px, 1600px);
    grid-template-columns: 1fr;
  }

  .fn-left-rail,
  .fn-right-rail {
    position: static;
  }

  .fn-menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .fn-rail-menu {
    display: none;
  }

  .fn-rail-menu.open {
    display: grid;
  }

  .fn-right-rail {
    grid-template-columns: 1fr;
  }

  .fn-list-item,
  .fn-side-search,
  .fn-search-form {
    grid-template-columns: 1fr;
  }

  .fn-list-thumb {
    max-height: 200px;
  }

  /* Article detail: prev/next stack */
  .fn-nav-row,
  .fn-article-nav {
    flex-direction: column !important;
    gap: 16px !important;
  }

  .fn-nav-row > div,
  .fn-article-nav > div,
  .fn-article-nav-card.next {
    text-align: left !important;
  }

  /* Article content responsive */
  .fn-article-content {
    font-size: 15px;
  }

  .fn-article-content h1 { font-size: 24px; }
  .fn-article-content h2 { font-size: 20px; }
  .fn-article-content h3 { font-size: 18px; }

  .fn-article-content pre {
    font-size: 12px;
    padding: 14px;
  }

  .fn-article-content table {
    font-size: 13px;
  }

  .fn-article-content td,
  .fn-article-content th {
    padding: 6px 8px;
    min-width: 40px;
  }
}

@media (max-width: 767px) {
  .fn-home-title,
  .fn-hero-title,
  .fn-article-title,
  .fn-channel-name,
  .fn-page-head h1 {
    font-size: 24px;
  }

  .fn-feed-title,
  .fn-card-title,
  .fn-list-title {
    font-size: 18px;
  }

  .fn-home-primary,
  .fn-home-secondary,
  .fn-channel-intro,
  .fn-channel-aside,
  .fn-channel-head-v2,
  .fn-content-shell,
  .fn-article-shell,
  .fn-tag-shell,
  .fn-search-shell,
  .fn-diy-shell,
  .fn-so-shell,
  .fn-side-panel,
  .fn-tags-hot,
  .fn-rail-header,
  .fn-footer {
    padding: 14px;
  }

  .fn-feed-item {
    grid-template-columns: 1fr;
  }

  .fn-feed-index {
    font-size: 22px;
  }

  /* Stack cards and river side */
  .fn-stack-cards {
    grid-template-columns: 1fr;
  }

  .fn-river-layout {
    grid-template-columns: 1fr;
  }

  .fn-channel-head {
    grid-template-columns: 1fr;
  }

  /* Channel head v2 responsive at 991 */
  .fn-channel-head-v2 {
    grid-template-columns: 1fr;
  }

  .fn-channel-name {
    font-size: 26px;
  }

  /* Tag grid single column */
  .fn-tag-grid {
    grid-template-columns: 1fr;
  }

  /* Search head single column */
  .fn-search-head {
    grid-template-columns: 1fr;
  }

  /* Stage strip stack */
  .fn-stage-strip {
    grid-template-columns: 1fr;
  }

  /* Article content mobile */
  .fn-article-content img {
    border-radius: 8px;
    margin: 12px 0;
  }

  .fn-article-content blockquote {
    padding: 12px 16px;
    margin: 16px 0;
  }

  .fn-article-cover {
    border-radius: 12px;
    margin: 12px 0 16px;
  }
}