/* ==========================================================================
   香蕉漫画 vebrm.cn — 全站样式表
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base — 变量、重置、排版基础
   -------------------------------------------------------------------------- */
:root {
  --bg-page: #f7f5f0;
  --bg-panel: #ffffff;
  --bg-soft: #efece4;
  --bg-tint: #e8e4dc;
  --ink-strong: #23231f;
  --ink-body: #2b2b2b;
  --ink-muted: #6b665c;
  --ink-faint: #8d877c;
  --line: #ded8cc;
  --line-soft: #eae5db;
  --region-a: #3a7d6e;
  --region-b: #b06a3b;
  --region-c: #3d5a80;
  --region-d: #a44a3f;
  --link: #35635a;
  --link-hover: #234b43;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --shadow-card: 0 1px 2px rgba(43, 43, 43, 0.06);
  --shadow-raise: 0 4px 14px rgba(43, 43, 43, 0.08);
  --shell-width: 1120px;
  --shell-pad: 20px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--bg-page);
  color: var(--ink-body);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--ink-strong);
  font-weight: 700;
  line-height: 1.35;
}

p {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

dl,
dt,
dd {
  margin: 0;
}

figure {
  margin: 0;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
  border: 0;
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover,
a:focus-visible {
  color: var(--link-hover);
  text-decoration: underline;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--region-c);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   layout — 全站骨架：容器、页头、导航、主区、页脚
   -------------------------------------------------------------------------- */
.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--bg-page);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: rgba(247, 245, 240, 0.96);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 20px;
  width: 100%;
  max-width: var(--shell-width);
  margin: 0 auto;
  padding: 12px var(--shell-pad);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink-strong);
  font-size: 18px;
  font-weight: 700;
}

.brand:hover,
.brand:focus-visible {
  color: var(--ink-strong);
  text-decoration: none;
}

.brand-mark {
  display: inline-block;
  width: 26px;
  height: 26px;
  border-radius: var(--radius-sm);
  background-color: var(--region-a);
  box-shadow: inset -8px -8px 0 0 var(--region-b);
}

.brand-name {
  letter-spacing: 0;
}

.site-nav {
  margin-left: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
}

.nav-link {
  display: inline-block;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--ink-muted);
  font-size: 15px;
  line-height: 1.4;
}

.nav-link:hover,
.nav-link:focus-visible {
  background-color: var(--bg-tint);
  color: var(--ink-strong);
  text-decoration: none;
}

.nav-link.is-current {
  color: var(--region-a);
  font-weight: 700;
  background-color: rgba(58, 125, 110, 0.1);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 44px;
  height: 44px;
  margin-left: auto;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background-color: var(--bg-panel);
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--ink-body);
}

.site-main {
  flex: 1 0 auto;
  width: 100%;
}

.home-main,
.inner-main {
  width: 100%;
  max-width: var(--shell-width);
  margin: 0 auto;
  padding: 0 var(--shell-pad) 56px;
}

.fact-bar {
  width: 100%;
  max-width: var(--shell-width);
  margin: 0 auto;
  padding: 10px var(--shell-pad);
  color: var(--ink-muted);
  font-size: 13px;
  line-height: 1.6;
  border-bottom: 1px solid var(--line-soft);
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 16px 0 4px;
  color: var(--ink-muted);
  font-size: 13px;
}

.breadcrumb a {
  color: var(--ink-muted);
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--link-hover);
}

.breadcrumb-sep {
  color: var(--ink-faint);
}

.breadcrumb-current {
  color: var(--ink-body);
}

.page-header {
  padding: 12px 0 24px;
  border-bottom: 1px solid var(--line-soft);
}

.page-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--ink-strong);
}

.page-description {
  max-width: 780px;
  margin-top: 10px;
  color: var(--ink-muted);
  font-size: 15px;
}

.page-description a {
  color: var(--link);
}

.site-footer {
  flex: 0 0 auto;
  margin-top: 24px;
  background-color: var(--bg-soft);
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 2fr);
  gap: 28px;
  width: 100%;
  max-width: var(--shell-width);
  margin: 0 auto;
  padding: 32px var(--shell-pad) 20px;
}

.footer-brand {
  min-width: 0;
}

.footer-name {
  color: var(--ink-strong);
  font-size: 17px;
  font-weight: 700;
}

.footer-desc {
  margin-top: 8px;
  max-width: 420px;
  color: var(--ink-muted);
  font-size: 14px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.footer-group {
  min-width: 0;
}

.footer-group-title {
  margin-bottom: 10px;
  color: var(--ink-strong);
  font-size: 14px;
  font-weight: 700;
}

.footer-list {
  display: grid;
  gap: 6px;
}

.footer-list a {
  color: var(--ink-muted);
  font-size: 14px;
}

.footer-list a:hover,
.footer-list a:focus-visible {
  color: var(--link-hover);
}

.footer-copy {
  width: 100%;
  max-width: var(--shell-width);
  margin: 0 auto;
  padding: 14px var(--shell-pad) 26px;
  color: var(--ink-faint);
  font-size: 13px;
  border-top: 1px solid var(--line);
}

/* --------------------------------------------------------------------------
   layout — 内页两栏结构
   -------------------------------------------------------------------------- */
.page-layout {
  display: grid;
  gap: 32px;
  padding-top: 28px;
  align-items: start;
}

.page-layout.sidebar-left {
  grid-template-columns: 264px minmax(0, 1fr);
}

.layout-ranking {
  grid-template-columns: minmax(0, 1fr) 300px;
}

.layout-shell {
  grid-template-columns: 264px minmax(0, 1fr);
}

.layout-main,
.content-column {
  min-width: 0;
}

.layout-aside {
  min-width: 0;
}

/* --------------------------------------------------------------------------
   components — 通用区块、标题、按钮、标签
   -------------------------------------------------------------------------- */
.section {
  margin-top: 40px;
}

.section:first-child,
.page-layout .section:first-child {
  margin-top: 0;
}

.section-title {
  font-size: 21px;
  font-weight: 700;
  color: var(--ink-strong);
}

.section-lead,
.section-lede,
.section-intro,
.section-desc {
  margin-top: 8px;
  max-width: 760px;
  color: var(--ink-muted);
  font-size: 15px;
}

.section-intro a,
.section-desc a,
.section-lede a {
  color: var(--link);
}

.column-title {
  padding-bottom: 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink-strong);
  border-bottom: 1px solid var(--line-soft);
}

.column-link {
  display: inline-block;
  margin-top: 14px;
  font-size: 14px;
  font-weight: 700;
}

.text-link {
  font-size: 14px;
  font-weight: 700;
}

.subsection-title {
  margin-top: 26px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-strong);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 700;
}

.btn:hover,
.btn:focus-visible {
  text-decoration: none;
}

.btn-primary {
  background-color: var(--region-a);
  color: #ffffff;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: #316a5d;
  color: #ffffff;
}

.btn-plain {
  background-color: var(--bg-panel);
  border-color: var(--line);
  color: var(--ink-body);
}

.btn-plain:hover,
.btn-plain:focus-visible {
  border-color: var(--ink-faint);
  color: var(--ink-strong);
}

.tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.tag-chip {
  min-height: 34px;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background-color: var(--bg-panel);
  color: var(--ink-muted);
  font-size: 14px;
}

.tag-chip:hover,
.tag-chip:focus-visible {
  border-color: var(--region-a);
  color: var(--region-a);
}

.tag-chip.is-active {
  background-color: var(--region-a);
  border-color: var(--region-a);
  color: #ffffff;
}

/* 封面卡通用样式（首页 / 题材分类 / 人气位次共用） */
.cover-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 20px;
}

.cover-card {
  min-width: 0;
  padding: 10px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.cover-card:hover {
  box-shadow: var(--shadow-raise);
  transform: translateY(-2px);
}

.cover-figure {
  overflow: hidden;
  border-radius: var(--radius-sm);
  background-color: var(--bg-tint);
}

.cover-figure img {
  width: 100%;
  aspect-ratio: 3 / 4;
  height: auto;
  object-fit: cover;
}

.cover-name {
  margin-top: 10px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-strong);
}

.cover-topic {
  margin-top: 4px;
  color: var(--ink-muted);
  font-size: 13px;
}

.cover-status {
  margin-top: 2px;
  color: var(--region-b);
  font-size: 13px;
}

.cover-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  margin-top: 4px;
  font-size: 13px;
}

.cover-meta .cover-topic,
.cover-meta .cover-status {
  margin-top: 0;
}

/* --------------------------------------------------------------------------
   pages — 首页
   -------------------------------------------------------------------------- */
.hero-map {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 32px;
  align-items: center;
  padding: 36px 0 8px;
}

.hero-copy {
  min-width: 0;
}

.hero-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--ink-strong);
}

.hero-lead {
  margin-top: 14px;
  max-width: 520px;
  color: var(--ink-muted);
  font-size: 16px;
}

.hero-paths {
  display: grid;
  gap: 10px;
  margin-top: 22px;
}

.hero-path {
  min-width: 0;
}

.hero-path a {
  display: block;
  padding: 12px 14px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--region-a);
  border-radius: var(--radius-md);
  color: var(--ink-body);
}

.hero-path a:hover,
.hero-path a:focus-visible {
  border-left-color: var(--region-c);
  background-color: #fdfcf9;
  text-decoration: none;
}

.hero-path-name {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-strong);
}

.hero-path-desc {
  display: block;
  margin-top: 2px;
  color: var(--ink-muted);
  font-size: 13px;
}

.hero-map-layer {
  min-width: 0;
  padding: 16px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.hero-figure {
  overflow: hidden;
  border-radius: var(--radius-md);
  background-color: var(--bg-tint);
}

.hero-figure img {
  width: 100%;
  aspect-ratio: 16 / 10;
  height: auto;
  object-fit: cover;
}

.hero-caption {
  margin-top: 8px;
  color: var(--ink-muted);
  font-size: 13px;
}

.map-legend {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 16px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}

.map-legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  color: var(--ink-muted);
  font-size: 13px;
}

.legend-dot {
  display: inline-block;
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border-radius: 2px;
}

.legend-a .legend-dot {
  background-color: var(--region-a);
}

.legend-b .legend-dot {
  background-color: var(--region-b);
}

.legend-c .legend-dot {
  background-color: var(--region-c);
}

.legend-d .legend-dot {
  background-color: var(--region-d);
}

.topic-regions {
  margin-top: 44px;
}

.region-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.region-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 16px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-top: 3px solid var(--region-a);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.region-card.region-b {
  border-top-color: var(--region-b);
}

.region-card.region-c {
  border-top-color: var(--region-c);
}

.region-card.region-d {
  border-top-color: var(--region-d);
}

.region-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink-strong);
}

.region-scope,
.region-org {
  margin-top: 8px;
  color: var(--ink-muted);
  font-size: 14px;
}

.region-label {
  display: block;
  color: var(--ink-faint);
  font-size: 12px;
}

.region-link {
  margin-top: auto;
  padding-top: 12px;
  font-size: 14px;
  font-weight: 700;
}

.cover-wall {
  margin-top: 44px;
}

.update-topic {
  margin-top: 44px;
}

.update-topic-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: 28px;
  margin-top: 20px;
  align-items: start;
}

.update-column,
.topic-column {
  min-width: 0;
}

.update-list {
  margin-top: 12px;
  border-top: 1px solid var(--line-soft);
}

.update-item {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14px;
}

.update-batch {
  color: var(--ink-faint);
  font-size: 13px;
}

.update-name {
  color: var(--ink-strong);
  font-weight: 700;
}

.update-topic-tag,
.update-state {
  padding: 2px 8px;
  border-radius: 999px;
  background-color: var(--bg-tint);
  color: var(--ink-muted);
  font-size: 12px;
  white-space: nowrap;
}

.update-state {
  background-color: rgba(176, 106, 59, 0.14);
  color: var(--region-b);
}

.topic-card {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 14px;
  margin-top: 12px;
  padding: 12px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.topic-figure {
  overflow: hidden;
  border-radius: var(--radius-sm);
  background-color: var(--bg-tint);
}

.topic-figure img {
  width: 100%;
  aspect-ratio: 3 / 4;
  height: auto;
  object-fit: cover;
}

.topic-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-strong);
}

.topic-angle,
.topic-entry {
  margin-top: 6px;
  color: var(--ink-muted);
  font-size: 14px;
}

.field-path {
  margin-top: 44px;
}

.field-path-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 28px;
  margin-top: 20px;
  align-items: start;
}

.field-column,
.path-column {
  min-width: 0;
}

.field-list {
  margin-top: 12px;
}

.field-path .field-list {
  border-top: 1px solid var(--line-soft);
}

.field-path .field-name {
  padding-top: 10px;
  color: var(--ink-strong);
  font-size: 15px;
  font-weight: 700;
}

.field-path .field-desc {
  padding-bottom: 10px;
  color: var(--ink-muted);
  font-size: 14px;
  border-bottom: 1px solid var(--line-soft);
}

.path-steps {
  display: grid;
  gap: 12px;
  margin-top: 12px;
}

.path-step {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  grid-template-rows: auto auto;
  column-gap: 12px;
  padding: 12px 14px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
}

.path-step .step-index {
  grid-row: 1 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background-color: var(--region-c);
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
}

.path-step .step-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-strong);
}

.path-step .step-desc {
  color: var(--ink-muted);
  font-size: 14px;
}

.site-index {
  margin-top: 44px;
}

.site-index .index-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin-top: 20px;
}

.site-index .index-item {
  min-width: 0;
  padding: 14px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.site-index .index-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-strong);
}

.site-index .index-desc {
  margin-top: 6px;
  color: var(--ink-muted);
  font-size: 13px;
}

/* --------------------------------------------------------------------------
   pages — 题材分类
   -------------------------------------------------------------------------- */
.topic-sidebar {
  min-width: 0;
  padding: 16px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.sidebar-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-strong);
}

.sidebar-note {
  margin-top: 6px;
  color: var(--ink-muted);
  font-size: 13px;
}

.topic-tree {
  margin-top: 14px;
  border-top: 1px solid var(--line-soft);
}

.topic-tree-item {
  border-bottom: 1px solid var(--line-soft);
}

.topic-tree-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 2px;
  color: var(--ink-body);
  font-size: 14px;
}

.topic-tree-link:hover,
.topic-tree-link:focus-visible {
  color: var(--link-hover);
  text-decoration: none;
}

.topic-code {
  color: var(--ink-faint);
  font-size: 12px;
}

.topic-tree-name {
  font-weight: 700;
}

.topic-overview {
  min-width: 0;
}

.overview-table {
  margin-top: 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--bg-panel);
}

.overview-row {
  display: grid;
  grid-template-columns: 60px 120px minmax(0, 1.1fr) minmax(0, 1.2fr) 76px;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line-soft);
}

.overview-row:last-child {
  border-bottom: 0;
}

.overview-head {
  background-color: var(--bg-soft);
  color: var(--ink-muted);
  font-size: 13px;
  font-weight: 700;
}

.overview-cell {
  min-width: 0;
  font-size: 14px;
}

.overview-head .overview-cell {
  font-size: 13px;
}

.overview-row .cell-code {
  color: var(--ink-faint);
  font-size: 13px;
}

.overview-row .cell-name {
  color: var(--ink-strong);
  font-weight: 700;
}

.overview-row .cell-scope,
.overview-row .cell-organize {
  color: var(--ink-muted);
}

.overview-footnote {
  margin-top: 12px;
  color: var(--ink-faint);
  font-size: 13px;
}

.cover-wall-section {
  margin-top: 40px;
}

.topic-boundary {
  margin-top: 40px;
}

.boundary-body {
  margin-top: 14px;
  padding: 18px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
}

.boundary-text {
  color: var(--ink-muted);
  font-size: 15px;
}

.boundary-list {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

.boundary-item {
  position: relative;
  padding-left: 18px;
  color: var(--ink-body);
  font-size: 14px;
}

.boundary-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background-color: var(--region-b);
}

.related-reading {
  margin-top: 40px;
}

.related-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.related-item {
  min-width: 0;
  padding: 14px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
}

.related-link {
  font-size: 15px;
  font-weight: 700;
}

/* --------------------------------------------------------------------------
   pages — 更新记录
   -------------------------------------------------------------------------- */
.timeline-section {
  margin-top: 32px;
}

.timeline {
  position: relative;
  margin-top: 26px;
  padding-left: 26px;
  border-left: 2px solid var(--line);
}

.timeline-item {
  position: relative;
  padding-bottom: 26px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-marker {
  position: absolute;
  left: -34px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: var(--region-c);
  border: 3px solid var(--bg-page);
}

.timeline-body {
  min-width: 0;
  padding: 16px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.timeline-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.batch-no {
  padding: 2px 10px;
  border-radius: var(--radius-sm);
  background-color: rgba(61, 90, 128, 0.12);
  color: var(--region-c);
  font-size: 13px;
  font-weight: 700;
}

.batch-date {
  color: var(--ink-faint);
  font-size: 13px;
}

.batch-tag {
  padding: 2px 10px;
  border-radius: 999px;
  background-color: var(--bg-tint);
  color: var(--ink-muted);
  font-size: 12px;
}

.batch-note {
  margin-top: 10px;
  color: var(--ink-muted);
  font-size: 14px;
}

.entry-list {
  display: grid;
  gap: 8px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.entry-row {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.entry-thumb {
  overflow: hidden;
  border-radius: var(--radius-sm);
  background-color: var(--bg-tint);
}

.entry-thumb img {
  width: 48px;
  height: 64px;
  object-fit: cover;
}

.entry-info {
  min-width: 0;
}

.entry-name {
  display: block;
  color: var(--ink-strong);
  font-size: 15px;
  font-weight: 700;
}

.entry-topic {
  display: block;
  color: var(--ink-muted);
  font-size: 13px;
}

.entry-state {
  padding: 2px 10px;
  border-radius: 999px;
  background-color: rgba(58, 125, 110, 0.12);
  color: var(--region-a);
  font-size: 12px;
  white-space: nowrap;
}

.entry-state.is-new {
  background-color: rgba(164, 74, 63, 0.12);
  color: var(--region-d);
}

.entry-state.is-updated {
  background-color: rgba(176, 106, 59, 0.14);
  color: var(--region-b);
}

.entry-state.is-merged {
  background-color: var(--bg-tint);
  color: var(--ink-muted);
}

.feature-section {
  margin-top: 40px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 20px;
}

.feature-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background-color: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.feature-media {
  overflow: hidden;
  background-color: var(--bg-tint);
}

.feature-media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  height: auto;
  object-fit: cover;
}

.feature-body {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-width: 0;
  padding: 14px 16px 16px;
}

.feature-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-strong);
}

.feature-angle,
.feature-entries {
  margin-top: 8px;
  color: var(--ink-muted);
  font-size: 14px;
}

.feature-link {
  margin-top: auto;
  padding-top: 12px;
  font-size: 14px;
  font-weight: 700;
}

.rule-section {
  margin-top: 40px;
}

.rule-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 20px;
}

.rule-card {
  min-width: 0;
  padding: 16px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--region-b);
  border-radius: var(--radius-md);
}

.rule-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-strong);
}

.rule-text {
  margin-top: 8px;
  color: var(--ink-muted);
  font-size: 14px;
}

.more-section {
  margin-top: 40px;
}

.more-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.more-item {
  display: grid;
  grid-template-columns: minmax(0, 200px) minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 12px 14px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
}

.more-item a {
  font-size: 15px;
  font-weight: 700;
}

.more-desc {
  color: var(--ink-muted);
  font-size: 14px;
}

/* --------------------------------------------------------------------------
   pages — 人气位次
   -------------------------------------------------------------------------- */
.section-ranking-list {
  margin-top: 0;
}

.ranking-list {
  margin-top: 18px;
  border-top: 1px solid var(--line-soft);
}

.ranking-item {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  align-items: center;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
}

.ranking-position {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background-color: var(--bg-soft);
  color: var(--region-c);
  font-size: 15px;
  font-weight: 700;
}

.ranking-body {
  min-width: 0;
}

.ranking-name {
  display: block;
  color: var(--ink-strong);
  font-size: 15px;
  font-weight: 700;
}

.ranking-topic {
  display: block;
  margin-top: 2px;
  color: var(--ink-muted);
  font-size: 13px;
}

.ranking-summary {
  display: block;
  margin-top: 4px;
  color: var(--ink-muted);
  font-size: 14px;
}

.ranking-note {
  margin-top: 14px;
  color: var(--ink-faint);
  font-size: 13px;
}

.section-ranking-covers {
  margin-top: 40px;
}

.cover-grid-ranking {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.cover-grid-ranking .cover-card {
  padding: 8px;
}

.cover-grid-ranking .cover-card img {
  width: 100%;
  aspect-ratio: 3 / 4;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background-color: var(--bg-tint);
}

.cover-caption {
  margin-top: 8px;
  color: var(--ink-muted);
  font-size: 13px;
}

.aside-panel {
  min-width: 0;
  padding: 18px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.aside-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink-strong);
}

.aside-text {
  margin-top: 10px;
  color: var(--ink-muted);
  font-size: 14px;
}

.aside-list {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.aside-item {
  position: relative;
  padding-left: 16px;
  color: var(--ink-body);
  font-size: 14px;
}

.aside-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background-color: var(--region-c);
}

/* --------------------------------------------------------------------------
   pages — 查阅指引
   -------------------------------------------------------------------------- */
.side-panel {
  min-width: 0;
  padding: 16px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.side-panel-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-strong);
}

.side-panel-note {
  margin-top: 6px;
  color: var(--ink-muted);
  font-size: 13px;
}

.field-tree-list {
  margin-top: 14px;
  border-top: 1px solid var(--line-soft);
}

.field-tree-item {
  border-bottom: 1px solid var(--line-soft);
}

.field-tree-link {
  display: block;
  padding: 10px 2px;
  color: var(--ink-body);
  font-size: 14px;
  font-weight: 700;
}

.field-tree-link:hover,
.field-tree-link:focus-visible {
  color: var(--link-hover);
  text-decoration: none;
}

.field-spec {
  margin-top: 0;
}

.spec-figure {
  margin-top: 16px;
  overflow: hidden;
  border-radius: var(--radius-md);
  background-color: var(--bg-tint);
}

.spec-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  height: auto;
  object-fit: cover;
}

.spec-figure figcaption {
  padding: 10px 14px;
  color: var(--ink-muted);
  font-size: 13px;
}

.field-spec .field-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.field-spec .field-item {
  min-width: 0;
  padding: 14px 16px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--region-a);
  border-radius: var(--radius-md);
}

.field-spec .field-name {
  color: var(--ink-strong);
  font-size: 15px;
  font-weight: 700;
}

.field-spec .field-desc {
  margin-top: 6px;
  color: var(--ink-muted);
  font-size: 14px;
}

.field-spec .field-mark {
  margin-top: 6px;
  color: var(--region-c);
  font-size: 13px;
}

.guide-steps {
  margin-top: 40px;
}

.step-list {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.step-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  column-gap: 14px;
  padding: 16px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
}

.step-item .step-index {
  grid-row: 1 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--region-a);
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
}

.step-item .step-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-strong);
}

.step-item .step-desc {
  margin-top: 6px;
  color: var(--ink-muted);
  font-size: 14px;
}

.step-figure {
  margin-top: 18px;
  overflow: hidden;
  border-radius: var(--radius-md);
  background-color: var(--bg-tint);
}

.step-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  height: auto;
  object-fit: cover;
}

.step-figure figcaption {
  padding: 10px 14px;
  color: var(--ink-muted);
  font-size: 13px;
}

.scope-note {
  margin-top: 40px;
}

.scope-list {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

.scope-item {
  position: relative;
  padding-left: 18px;
  color: var(--ink-body);
  font-size: 14px;
}

.scope-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background-color: var(--region-a);
}

.scope-feedback {
  margin-top: 10px;
  color: var(--ink-muted);
  font-size: 14px;
}

.faq-item {
  margin-top: 12px;
  padding: 0 16px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
}

.faq-question {
  padding: 14px 0;
  color: var(--ink-strong);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}

.faq-question::marker {
  color: var(--region-a);
}

.faq-answer {
  padding: 12px 0 14px;
  color: var(--ink-muted);
  font-size: 14px;
  border-top: 1px dashed var(--line);
}

.site-index .index-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 20px;
}

.site-index .index-item {
  min-width: 0;
  padding: 14px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.site-index .index-link {
  font-size: 15px;
  font-weight: 700;
}

.site-index .index-desc {
  margin-top: 6px;
  color: var(--ink-muted);
  font-size: 13px;
}

/* --------------------------------------------------------------------------
   pages — 404
   -------------------------------------------------------------------------- */
.error-main {
  width: 100%;
  max-width: var(--shell-width);
  margin: 0 auto;
  padding: 48px var(--shell-pad) 56px;
}

.error-panel {
  max-width: 640px;
  padding: 32px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.error-code {
  color: var(--region-b);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0;
}

.error-title {
  margin-top: 8px;
  font-size: 28px;
  font-weight: 700;
  color: var(--ink-strong);
}

.error-desc {
  margin-top: 12px;
  color: var(--ink-muted);
  font-size: 15px;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.error-tips {
  margin-top: 40px;
}

.error-tip-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.error-tip-item {
  min-width: 0;
  padding: 16px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
}

.tip-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-strong);
}

.tip-desc {
  margin-top: 8px;
  color: var(--ink-muted);
  font-size: 14px;
}

/* --------------------------------------------------------------------------
   responsive — 平板与手机
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .cover-grid,
  .cover-grid-ranking {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .region-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-index .index-grid,
  .site-index .index-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-layout.sidebar-left {
    grid-template-columns: 232px minmax(0, 1fr);
  }

  .layout-ranking {
    grid-template-columns: minmax(0, 1fr) 264px;
  }

  .layout-shell {
    grid-template-columns: 232px minmax(0, 1fr);
  }
}

@media (max-width: 860px) {
  .nav-toggle {
    display: flex;
  }

  .nav-list {
    display: none;
  }

  .nav-list.is-open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    flex-basis: 100%;
    width: 100%;
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--line);
  }

  .nav-list.is-open .nav-link {
    padding: 12px 10px;
    font-size: 16px;
  }

  .site-nav {
    order: 3;
    width: 100%;
    margin-left: 0;
  }

  .hero-map {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    padding-top: 28px;
  }

  .update-topic-columns,
  .field-path-columns {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .page-layout.sidebar-left,
  .layout-ranking,
  .layout-shell {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
  }
}

@media (max-width: 640px) {
  :root {
    --shell-pad: 16px;
  }

  body {
    font-size: 15px;
  }

  .fact-bar {
    font-size: 12px;
  }

  .brand {
    font-size: 17px;
  }

  .hero-title {
    font-size: 23px;
  }

  .hero-lead {
    font-size: 15px;
  }

  .page-title {
    font-size: 23px;
  }

  .section-title {
    font-size: 19px;
  }

  .hero-map-layer {
    padding: 12px;
  }

  .map-legend {
    grid-template-columns: minmax(0, 1fr);
  }

  .region-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .cover-grid,
  .cover-grid-ranking {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .cover-card {
    padding: 8px;
  }

  .update-item {
    grid-template-columns: minmax(0, 1fr) auto;
    row-gap: 4px;
  }

  .update-batch {
    grid-column: 1 / -1;
  }

  .topic-card {
    grid-template-columns: 76px minmax(0, 1fr);
  }

  .feature-grid,
  .rule-grid,
  .error-tip-list,
  .related-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .more-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .entry-row {
    grid-template-columns: 48px minmax(0, 1fr);
    row-gap: 6px;
  }

  .entry-state {
    grid-column: 2;
    justify-self: start;
  }

  .overview-table {
    border: 0;
    background-color: transparent;
  }

  .overview-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
    margin-bottom: 12px;
    padding: 14px;
    background-color: var(--bg-panel);
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-md);
  }

  .overview-head {
    display: none;
  }

  .overview-row .cell-code {
    color: var(--ink-faint);
  }

  .overview-row .cell-scope::before {
    content: "覆盖范围：";
    color: var(--ink-faint);
  }

  .overview-row .cell-organize::before {
    content: "组织方式：";
    color: var(--ink-faint);
  }

  .ranking-item {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 10px;
  }

  .ranking-position {
    width: 36px;
    height: 36px;
    font-size: 14px;
  }

  .site-index .index-grid,
  .site-index .index-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer-links {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

  .error-panel {
    padding: 22px;
  }

  .error-title {
    font-size: 22px;
  }

  .error-actions .btn {
    flex: 1 1 auto;
  }

  .step-item,
  .path-step {
    grid-template-columns: 34px minmax(0, 1fr);
  }

  .step-item .step-index,
  .path-step .step-index {
    width: 34px;
    height: 34px;
    font-size: 14px;
  }
}

/* 内页移动端：题材分类树 / 字段口径树折叠到正文之前 */
@media (max-width: 860px) {
  .topic-sidebar,
  .side-panel.field-tree {
    order: -1;
  }

  .topic-tree {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .cover-card {
    transition: none;
  }

  .cover-card:hover {
    transform: none;
  }
}