/* ==========================================================================
   虫虫漫画 · 全站样式
   理性咨询风：深灰正文、细线分隔、克制蓝绿点缀
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. base —— 变量、重置、排版基础
   -------------------------------------------------------------------------- */
:root {
  --ink: #1f2933;
  --ink-soft: #52606d;
  --line: #e4e7eb;
  --teal: #0f766e;
  --teal-soft: #0ea5a4;
  --surface: #f7f9fa;
  --surface-deep: #eef2f4;
  --white: #ffffff;
  --radius: 6px;
  --radius-sm: 4px;
  --shell: 1120px;
  --reading: 720px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: "SFMono-Regular", "SF Mono", Menlo, Consolas, "Liberation Mono",
    "Courier New", monospace;
}

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

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

body {
  margin: 0;
  padding: 0;
  background: var(--white);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--ink);
  font-weight: 600;
  line-height: 1.35;
}

p {
  margin: 0;
}

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

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

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

img {
  display: block;
  max-width: 100%;
  height: auto;
  border: 0;
  background: var(--surface-deep);
}

figure {
  margin: 0;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
  width: 100%;
}

button {
  font: inherit;
  color: inherit;
}

time,
.rank-no,
.step-no,
.update-date,
.timeline-date,
.distribution-count,
.genre-nav-count,
.topic-count {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.visually-caption {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

/* --------------------------------------------------------------------------
   2. layout —— 骨架：页头、导航、主容器、面包屑、页脚
   -------------------------------------------------------------------------- */
.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: var(--white);
}

/* ---- 页头 ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 24px;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 12px 24px;
}

.brand {
  flex: 0 0 auto;
  color: var(--ink);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
}

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

/* ---- 主导航 ---- */
.site-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: flex-end;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 6px;
}

.nav-list > li {
  display: block;
}

.nav-list a {
  display: block;
  padding: 8px 12px;
  min-height: 40px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 24px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  white-space: nowrap;
}

.nav-list a:hover,
.nav-list a:focus-visible {
  background: var(--surface);
  color: var(--teal);
  text-decoration: none;
}

.nav-list a.is-current {
  color: var(--teal);
  font-weight: 600;
  background: var(--surface);
}

/* ---- 汉堡按钮：桌面隐藏 ---- */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  padding: 10px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  margin: 4px 0;
  background: var(--ink);
  border-radius: 1px;
}

.nav-toggle:hover {
  border-color: var(--teal-soft);
}

/* ---- 主内容 ---- */
.site-main {
  flex: 1 1 auto;
  width: 100%;
}

.inner-main {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 24px 24px 64px;
}

/* ---- 面包屑 ---- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-bottom: 16px;
  color: var(--ink-soft);
  font-size: 13px;
}

.breadcrumb a {
  color: var(--ink-soft);
  text-decoration: none;
}

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

.breadcrumb-sep {
  color: #9aa5b1;
}

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

/* ---- 内页标题区 ---- */
.page-header {
  max-width: var(--reading);
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.page-title {
  font-size: 27px;
  font-weight: 600;
  color: var(--ink);
}

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

/* ---- 页脚 ---- */
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--line);
}

.footer-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 40px 24px 28px;
}

.footer-groups {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px 32px;
}

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

.footer-title {
  margin-bottom: 12px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.footer-group ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-group li a {
  color: var(--ink-soft);
  font-size: 14px;
  text-decoration: none;
}

.footer-group li a:hover,
.footer-group li a:focus-visible {
  color: var(--teal);
  text-decoration: underline;
}

.footer-brand {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.footer-brand-name {
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
}

.footer-desc {
  max-width: 780px;
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: 13px;
}

.footer-copy {
  margin-top: 14px;
  color: #7b8794;
  font-size: 12px;
}

/* --------------------------------------------------------------------------
   3. components —— 通用组件
   -------------------------------------------------------------------------- */

/* ---- 区块标题组 ---- */
.section-head {
  margin-bottom: 22px;
}

.section-head h2 {
  font-size: 21px;
}

.section-note {
  margin-top: 8px;
  max-width: 780px;
  color: var(--ink-soft);
  font-size: 14px;
}

.section-title {
  font-size: 21px;
}

.section-intro,
.section-desc {
  margin-top: 8px;
  max-width: var(--reading);
  color: var(--ink-soft);
  font-size: 14px;
}

.section-foot {
  margin-top: 20px;
  color: var(--ink-soft);
  font-size: 14px;
}

.section-foot a {
  margin-right: 16px;
}

/* ---- 通用列头（首页并列区） ---- */
.column-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.column-head h3 {
  font-size: 17px;
}

.column-more {
  flex: 0 0 auto;
  font-size: 13px;
  color: var(--teal);
  text-decoration: none;
}

.column-more:hover,
.column-more:focus-visible {
  text-decoration: underline;
}

/* ---- 封面卡（首页） ---- */
.cover-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.cover-card {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  transition: border-color 0.18s ease, background-color 0.18s ease;
}

.cover-card:hover {
  border-color: var(--teal-soft);
  background: var(--surface);
}

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

.cover-meta {
  padding: 10px 12px 12px;
}

.cover-name {
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
}

.cover-tags {
  margin-top: 4px;
  color: var(--ink-soft);
  font-size: 12px;
}

/* ---- 更新记录行（首页） ---- */
.update-list {
  display: flex;
  flex-direction: column;
}

.update-row {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr) auto;
  grid-template-areas:
    "date name chapter"
    "date genre genre";
  align-items: center;
  gap: 2px 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.update-row:first-child {
  border-top: 1px solid var(--line);
}

.update-date {
  grid-area: date;
  color: var(--ink-soft);
  font-size: 12px;
}

.update-name {
  grid-area: name;
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  overflow-wrap: anywhere;
}

.update-chapter {
  grid-area: chapter;
  color: var(--teal);
  font-size: 12px;
  white-space: nowrap;
}

.update-genre {
  grid-area: genre;
  color: var(--ink-soft);
  font-size: 12px;
}

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

/* ---- 位次条目行（首页） ---- */
.rank-list {
  display: flex;
  flex-direction: column;
}

.rank-row {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr) auto;
  grid-template-areas:
    "no name field"
    "no genre genre";
  align-items: center;
  gap: 2px 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.rank-row:first-child {
  border-top: 1px solid var(--line);
}

.rank-no {
  grid-area: no;
  color: var(--teal);
  font-size: 14px;
  font-weight: 600;
}

.rank-name {
  grid-area: name;
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  overflow-wrap: anywhere;
}

.rank-genre {
  grid-area: genre;
  color: var(--ink-soft);
  font-size: 12px;
}

.rank-field {
  grid-area: field;
  color: var(--ink-soft);
  font-size: 12px;
  white-space: nowrap;
}

/* ---- 字段口径说明块 ---- */
.field-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.field-list dt {
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
}

.field-list dd {
  margin: 2px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
}

/* ---- 步骤条（首页） ---- */
.step-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.step-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.step-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--teal);
  color: var(--white);
  font-size: 13px;
  font-weight: 600;
}

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

.step-link {
  margin-top: auto;
  font-size: 13px;
}

/* ---- 内页侧栏通用 ---- */
.genre-nav,
.batch-note,
.ranking-aside {
  min-width: 0;
}

.aside-title {
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}

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

.aside-link {
  margin-top: 16px;
  font-size: 13px;
}

.genre-nav-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.genre-nav-list li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 44px;
  padding: 8px 10px;
  color: var(--ink);
  font-size: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  text-decoration: none;
}

.genre-nav-list li a:hover,
.genre-nav-list li a:focus-visible {
  border-color: var(--teal-soft);
  background: var(--surface);
  color: var(--teal);
  text-decoration: none;
}

.genre-nav-count {
  flex: 0 0 auto;
  color: var(--ink-soft);
  font-size: 12px;
}

/* ---- 表格通用 ---- */
.table-wrap,
.compare-table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.compare-table,
.field-table,
.rank-change-table {
  min-width: 560px;
  font-size: 14px;
}

.compare-table caption,
.field-table caption,
.rank-change-table caption {
  padding: 12px 16px;
  color: var(--ink-soft);
  font-size: 13px;
  text-align: left;
}

.compare-table thead th,
.field-table thead th,
.rank-change-table thead th {
  padding: 11px 14px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: 13px;
  font-weight: 600;
  text-align: left;
  white-space: nowrap;
}

.compare-table tbody td,
.compare-table tbody th,
.field-table tbody td,
.field-table tbody th,
.rank-change-table tbody td,
.rank-change-table tbody th {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  text-align: left;
  vertical-align: top;
}

.compare-table tbody th,
.field-table tbody th,
.rank-change-table tbody th {
  color: var(--ink);
  font-weight: 600;
}

.compare-table tbody tr:last-child td,
.compare-table tbody tr:last-child th,
.field-table tbody tr:last-child td,
.field-table tbody tr:last-child th,
.rank-change-table tbody tr:last-child td,
.rank-change-table tbody tr:last-child th {
  border-bottom: 0;
}

/* ---- 图片容器通用约束 ---- */
.hero-visual,
.genre-figure,
.topic-figure,
.usage-figure,
.media-figure,
.rank-cover {
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--surface-deep);
}

/* --------------------------------------------------------------------------
   4. pages —— 首页
   -------------------------------------------------------------------------- */
.home-main {
  display: flex;
  flex-direction: column;
}

.home-main > section {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 44px 24px;
  border-bottom: 1px solid var(--line);
}

.home-main > section:last-of-type {
  border-bottom: 0;
}

/* ---- 首屏查阅工作台 ---- */
.hero-workbench {
  padding-top: 40px;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

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

.hero-fact {
  margin-bottom: 14px;
  padding-left: 12px;
  border-left: 3px solid var(--teal-soft);
  color: var(--ink-soft);
  font-size: 13px;
}

.hero-title {
  font-size: 32px;
  font-weight: 600;
  line-height: 1.35;
}

.hero-lead {
  margin-top: 14px;
  max-width: 560px;
  color: var(--ink-soft);
  font-size: 15px;
}

.hero-paths {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 24px;
}

.hero-path a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 48px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

.hero-path a::after {
  content: "→";
  flex: 0 0 auto;
  color: var(--teal);
  font-size: 14px;
}

.hero-path a:hover,
.hero-path a:focus-visible {
  border-color: var(--teal-soft);
  background: var(--surface);
  color: var(--teal);
  text-decoration: none;
}

.hero-visual {
  min-width: 0;
  border: 1px solid var(--line);
}

.hero-visual img {
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
}

.hero-caption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 12px;
}

/* ---- 题材方向总览 ---- */
.genre-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.genre-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  transition: border-color 0.18s ease, background-color 0.18s ease;
}

.genre-card:hover {
  border-color: var(--teal-soft);
  background: var(--surface);
}

.genre-name {
  font-size: 16px;
}

.genre-scope {
  color: var(--ink);
  font-size: 13px;
}

.genre-trait {
  color: var(--ink-soft);
  font-size: 13px;
}

.genre-entry {
  margin-top: auto;
  padding-top: 6px;
  font-size: 13px;
}

/* ---- 封面条目速览与最近更新记录 ---- */
.cover-updates {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 36px;
  align-items: start;
}

.cover-column,
.updates-column {
  min-width: 0;
}

/* ---- 人气位次参考与字段口径 ---- */
.ranking-fields {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 36px;
  align-items: start;
}

.ranking-column,
.fields-column {
  min-width: 0;
}

/* ---- 专题策展入口 ---- */
.topic-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.topic-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.topic-name {
  font-size: 16px;
}

.topic-angle {
  color: var(--ink);
  font-size: 13px;
}

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

.topic-entry {
  margin-top: auto;
  padding-top: 6px;
  font-size: 13px;
}

/* ---- 站内栏目索引 ---- */
.index-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
}

.index-item {
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.index-item a {
  display: block;
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

.index-item a:hover,
.index-item a:focus-visible {
  color: var(--teal);
  text-decoration: underline;
}

.index-item p {
  margin-top: 6px;
  color: var(--ink-soft);
  font-size: 12px;
}

/* --------------------------------------------------------------------------
   5. pages —— 内页通用布局
   -------------------------------------------------------------------------- */
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 40px;
  align-items: start;
}

.layout-shell {
  grid-template-columns: minmax(0, 1fr) 280px;
}

.page-layout > * {
  min-width: 0;
}

/* 侧栏在左：aside 在 DOM 中位于主内容之前 */
.sidebar-left {
  grid-template-columns: 260px minmax(0, 1fr);
}

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

.inner-main .section,
.inner-main > section {
  margin-bottom: 44px;
}

.inner-main > section:last-of-type,
.inner-main .section:last-child {
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   6. pages —— 题材分类页
   -------------------------------------------------------------------------- */
.page-genres .genre-sections {
  margin-bottom: 44px;
}

.genre-block {
  margin-bottom: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.genre-block:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: 0;
}

.genre-block-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 24px;
  align-items: start;
  margin-bottom: 18px;
}

.genre-block-text {
  min-width: 0;
}

.genre-block-text .genre-name {
  font-size: 18px;
}

.genre-block-text .genre-scope {
  margin-top: 8px;
}

.genre-block-text .genre-trait {
  margin-top: 6px;
}

.genre-figure {
  min-width: 0;
  border: 1px solid var(--line);
}

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

.genre-entry-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.genre-entry-list > li {
  min-width: 0;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

/* 方向封面条目网格 */
.cover-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.cover-grid .cover-card {
  display: flex;
  flex-direction: column;
}

.cover-link {
  display: flex;
  flex-direction: column;
  height: 100%;
  color: var(--ink);
  text-decoration: none;
}

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

.cover-figure {
  min-width: 0;
  background: var(--surface-deep);
}

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

.cover-grid .cover-name {
  padding: 10px 12px 0;
}

.cover-fields {
  padding: 4px 12px 12px;
  color: var(--ink-soft);
  font-size: 12px;
}

.field-label {
  display: inline-block;
  margin-right: 4px;
  color: var(--ink-soft);
}

/* 方向比较 */
.compare-table-wrap {
  margin-bottom: 28px;
}

.topic-entry-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.topic-entry {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.topic-entry-name {
  font-size: 15px;
}

.topic-entry-desc {
  color: var(--ink-soft);
  font-size: 13px;
}

.topic-entry-link {
  margin-top: auto;
  font-size: 13px;
}

/* --------------------------------------------------------------------------
   7. pages —— 最近更新页
   -------------------------------------------------------------------------- */
.page-updates .update-timeline {
  min-width: 0;
}

.timeline-list {
  position: relative;
  display: flex;
  flex-direction: column;
  border-left: 2px solid var(--line);
  padding-left: 22px;
}

.timeline-item {
  position: relative;
  padding: 0 0 24px;
}

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

.timeline-item::before {
  content: "";
  position: absolute;
  left: -29px;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--teal);
  border: 2px solid var(--white);
}

.timeline-date {
  display: block;
  color: var(--ink-soft);
  font-size: 12px;
}

.timeline-body {
  margin-top: 4px;
  min-width: 0;
}

.timeline-name {
  font-size: 15px;
}

.timeline-meta {
  margin-top: 4px;
  color: var(--ink-soft);
  font-size: 13px;
}

.timeline-chapter {
  margin-top: 4px;
  color: var(--ink);
  font-size: 13px;
}

.tag-status,
.tag-genre {
  display: inline-block;
  margin-right: 6px;
  padding: 1px 8px;
  border-radius: 10px;
  font-size: 12px;
  line-height: 1.7;
}

.tag-status.is-ongoing {
  background: #e6f4f2;
  color: var(--teal);
}

.tag-status.is-completed {
  background: var(--surface-deep);
  color: var(--ink-soft);
}

.tag-genre {
  background: var(--surface);
  color: var(--ink-soft);
  border: 1px solid var(--line);
}

/* 批次说明 */
.batch-note {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.batch-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 16px;
}

.batch-item {
  min-width: 0;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

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

.batch-name {
  font-size: 14px;
}

.batch-scope {
  margin-top: 4px;
  color: var(--ink);
  font-size: 13px;
}

.batch-change {
  margin-top: 4px;
  color: var(--ink-soft);
  font-size: 13px;
}

.batch-foot {
  margin-top: 16px;
  font-size: 13px;
}

/* 题材方向分布 */
.distribution-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.distribution-cell {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.distribution-name {
  font-size: 15px;
}

.distribution-name a {
  color: var(--ink);
  text-decoration: none;
}

.distribution-name a:hover,
.distribution-name a:focus-visible {
  color: var(--teal);
  text-decoration: underline;
}

.distribution-count {
  margin-top: 8px;
  color: var(--teal);
  font-size: 13px;
}

.distribution-desc {
  margin-top: 6px;
  color: var(--ink-soft);
  font-size: 13px;
}

/* 阅读说明 */
.usage-body {
  display: grid;
  grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.usage-figure {
  min-width: 0;
  border: 1px solid var(--line);
}

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

.usage-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 12px;
}

.usage-text {
  min-width: 0;
}

.usage-text h3 {
  margin-top: 20px;
  font-size: 15px;
}

.usage-text h3:first-child {
  margin-top: 0;
}

.usage-text p {
  margin-top: 6px;
  color: var(--ink-soft);
  font-size: 14px;
}

/* 相关条目 */
.related-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.related-list > li {
  min-width: 0;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  font-size: 14px;
}

/* --------------------------------------------------------------------------
   8. pages —— 人气位次页
   -------------------------------------------------------------------------- */
.ranking-list-section {
  min-width: 0;
}

.ranking-list {
  display: flex;
  flex-direction: column;
}

.ranking-item {
  display: grid;
  grid-template-columns: 32px 76px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.ranking-item:first-child {
  border-top: 1px solid var(--line);
}

.ranking-list .rank-no {
  grid-column: 1;
  padding-top: 2px;
  font-size: 15px;
}

.rank-cover {
  grid-column: 2;
  border: 1px solid var(--line);
}

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

.rank-body {
  grid-column: 3;
  min-width: 0;
}

.ranking-list .rank-name {
  font-size: 15px;
}

.rank-meta {
  margin-top: 4px;
  color: var(--ink-soft);
  font-size: 13px;
}

.ranking-list .rank-field {
  margin-top: 6px;
  color: var(--ink);
  font-size: 13px;
}

.rank-status {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 12px;
}

.ranking-aside {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.ranking-aside .section-title {
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}

.ranking-aside .section-note {
  margin-top: 12px;
}

.ranking-aside .field-list {
  margin-top: 16px;
}

/* 位次变化对照表 */
.rank-change-table tbody th {
  white-space: nowrap;
}

.trend {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 10px;
  font-size: 12px;
  font-family: var(--font-mono);
}

.trend-up {
  background: #e6f4f2;
  color: var(--teal);
}

.trend-down {
  background: #f4ecec;
  color: #9b4a4a;
}

.trend-flat {
  background: var(--surface-deep);
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   9. pages —— 专题策展页
   -------------------------------------------------------------------------- */
.topic-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.topic-list .topic-card {
  display: grid;
  grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
  gap: 26px;
  align-items: start;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.topic-figure {
  min-width: 0;
  border-right: 1px solid var(--line);
  border-radius: 0;
}

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

.topic-body {
  min-width: 0;
  padding: 22px 22px 22px 0;
}

.topic-list .topic-name {
  font-size: 18px;
}

.topic-list .topic-angle {
  margin-top: 8px;
  color: var(--ink);
  font-size: 14px;
}

.topic-criteria {
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: 13px;
}

.topic-items {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.topic-item {
  min-width: 0;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  font-size: 13px;
}

.topic-item-note {
  color: var(--ink-soft);
  font-size: 12px;
}

.topic-list .topic-count {
  margin-top: 14px;
}

/* 选取标准 */
.criteria-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.criteria-item {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.criteria-name {
  font-size: 15px;
}

.criteria-item p {
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: 13px;
}

/* 延伸查阅 */
.extend-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.extend-item {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.extend-name {
  font-size: 15px;
}

.extend-item p {
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: 13px;
}

/* --------------------------------------------------------------------------
   10. pages —— 查阅指引页
   -------------------------------------------------------------------------- */
.field-table-section .table-wrap {
  margin-bottom: 24px;
}

.media-figure {
  min-width: 0;
  max-width: var(--reading);
  border: 1px solid var(--line);
}

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

.media-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 12px;
}

/* 收录边界 */
.boundary-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.boundary-item {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.boundary-title {
  font-size: 15px;
}

.boundary-item p {
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: 13px;
}

/* 查阅路径三步 */
.path-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.path-step {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.path-step .step-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--teal);
  color: var(--white);
  font-size: 13px;
  font-weight: 600;
}

.step-title {
  font-size: 15px;
}

.path-step p {
  color: var(--ink-soft);
  font-size: 13px;
}

/* 阅读准备 */
.prep-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.prep-item {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.prep-title {
  font-size: 15px;
}

.prep-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 12px;
}

.prep-list li {
  position: relative;
  padding-left: 16px;
  color: var(--ink-soft);
  font-size: 13px;
}

.prep-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--teal-soft);
}

/* FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: var(--reading);
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.faq-item summary {
  padding: 14px 18px;
  min-height: 44px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "＋";
  float: right;
  color: var(--teal);
  font-weight: 400;
}

.faq-item[open] summary::after {
  content: "－";
}

.faq-item summary:hover {
  color: var(--teal);
}

.faq-item p {
  padding: 0 18px 16px;
  color: var(--ink-soft);
  font-size: 14px;
}

/* 相关条目（指引页） */
.related-section .related-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.related-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.related-item a {
  font-weight: 600;
}

.related-note {
  color: var(--ink-soft);
  font-size: 12px;
}

/* --------------------------------------------------------------------------
   11. pages —— 404
   -------------------------------------------------------------------------- */
.error-main {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 64px 24px 72px;
}

.error-panel {
  max-width: var(--reading);
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
}

.error-code {
  color: var(--teal);
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.12em;
}

.error-panel h1 {
  margin-top: 10px;
  font-size: 27px;
}

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

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--teal);
  border-color: var(--teal);
  color: var(--white);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--teal-soft);
  border-color: var(--teal-soft);
  color: var(--white);
  text-decoration: none;
}

.btn-ghost {
  background: var(--white);
  border-color: var(--line);
  color: var(--ink);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: var(--teal-soft);
  color: var(--teal);
  text-decoration: none;
}

.error-links {
  margin-top: 36px;
}

.error-links h2 {
  font-size: 18px;
}

.error-link-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.error-link-list li {
  min-width: 0;
}

.error-link-list a {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

.error-link-list a:hover,
.error-link-list a:focus-visible {
  border-color: var(--teal-soft);
  background: var(--surface);
  color: var(--teal);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   12. responsive —— 断点 960px / 640px
   -------------------------------------------------------------------------- */
@media (max-width: 1080px) {
  .index-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 960px) {
  .header-inner {
    padding: 10px 20px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    flex: 1 0 100%;
    justify-content: stretch;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    width: 100%;
    padding-top: 8px;
    border-top: 1px solid var(--line);
  }

  .nav-list.is-open {
    display: flex;
  }

  .nav-list a {
    padding: 11px 12px;
    font-size: 15px;
  }

  .inner-main {
    padding: 20px 20px 56px;
  }

  .home-main > section {
    padding: 36px 20px;
  }

  .hero-inner,
  .cover-updates,
  .ranking-fields {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .hero-title {
    font-size: 27px;
  }

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

  .cover-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

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

  /* 内页双栏收为单栏，主内容始终在前 */
  .page-layout,
  .layout-shell,
  .sidebar-left {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

  .genre-block-head {
    grid-template-columns: minmax(0, 1fr) 200px;
  }

  .cover-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .topic-entry-list,
  .criteria-grid,
  .extend-list,
  .path-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .related-list,
  .error-link-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .topic-figure {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .topic-body {
    padding: 20px;
  }

  .usage-body {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

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

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .header-inner {
    padding: 10px 16px;
  }

  .inner-main {
    padding: 16px 16px 48px;
  }

  .home-main > section {
    padding: 30px 16px;
  }

  .page-title,
  .error-panel h1 {
    font-size: 22px;
  }

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

  .section-head h2,
  .section-title {
    font-size: 18px;
  }

  .genre-grid,
  .topic-grid,
  .step-list,
  .index-grid,
  .cover-grid,
  .topic-entry-list,
  .criteria-grid,
  .extend-list,
  .path-steps,
  .distribution-grid,
  .boundary-columns,
  .prep-columns,
  .related-list,
  .related-section .related-list,
  .error-link-list,
  .genre-entry-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .genre-block-head {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .update-row {
    grid-template-columns: 56px minmax(0, 1fr);
    grid-template-areas:
      "date name"
      "date chapter"
      "date genre";
    gap: 2px 10px;
  }

  .update-chapter {
    white-space: normal;
  }

  .ranking-item {
    grid-template-columns: 26px 64px minmax(0, 1fr);
    gap: 12px;
  }

  .footer-inner {
    padding: 32px 16px 24px;
  }

  .footer-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px 20px;
  }

  .error-main {
    padding: 40px 16px 56px;
  }

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

@media (max-width: 400px) {
  .cover-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

/* --------------------------------------------------------------------------
   13. 动效增强 —— 不依赖 JS 显示正文
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: no-preference) {
  .cover-card,
  .genre-card,
  .index-item,
  .distribution-cell,
  .criteria-item,
  .extend-item {
    transition: border-color 0.18s ease, background-color 0.18s ease,
      box-shadow 0.18s ease;
  }

  .cover-card:hover,
  .genre-card:hover,
  .index-item:hover,
  .distribution-cell:hover,
  .criteria-item:hover,
  .extend-item:hover {
    box-shadow: 0 1px 3px rgba(31, 41, 51, 0.06);
  }
}