/* ==========================================================================
   age动漫 · 全站样式表
   分组：base / layout / components / pages / responsive
   内容对象统一称「条目」，分类称「题材方向」，时间线称「更新批次」
   ========================================================================== */

/* --------------------------------------------------------------------------
   base · 变量与基础排版
   -------------------------------------------------------------------------- */
:root {
  --bg-page: #f7f4ee;
  --bg-footer: #efe9df;
  --bg-soft: #fbf9f5;
  --ink: #1f1d1a;
  --ink-soft: #6b6257;
  --accent: #b4552d;
  --line: #e2dcd2;
  --line-strong: #d3cabd;
  --radius: 6px;
  --radius-sm: 4px;
  --shell-max: 1120px;
  --inner-max: 880px;
  --gap: 24px;
}

*,
*::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);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 600;
  line-height: 1.3;
  color: var(--ink);
}

p {
  margin: 0;
}

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

dl,
dd,
dt,
figure,
figcaption {
  margin: 0;
}

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

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

a:hover,
a:focus-visible {
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

button {
  font: inherit;
  color: inherit;
}

/* 通用辅助文字 */
.section-intro,
.section-lead,
.page-description,
.genre-scope,
.genre-trait,
.genre-organize,
.cover-meta,
.entry-meta,
.entry-note,
.batch-summary,
.batch-meta,
.index-desc,
.related-desc,
.footer-brand-desc,
.footer-copy,
.figure-caption,
.field-figure-caption,
.error-lead {
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   layout · 顶部事实条 / 页头 / 主导航 / 页脚骨架
   -------------------------------------------------------------------------- */

/* 顶部事实条（仅首页） */
.top-fact-bar {
  background-color: var(--bg-footer);
  border-bottom: 1px solid var(--line);
}

.top-fact-bar p {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 9px 24px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-soft);
}

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 14px 24px;
}

.brand-mark {
  flex: 0 0 auto;
  font-size: 20px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--ink);
  letter-spacing: 0;
}

.brand-mark:hover,
.brand-mark:focus-visible {
  color: var(--accent);
  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;
  justify-content: flex-end;
  gap: 4px 22px;
}

.nav-list li {
  display: flex;
}

.nav-list a {
  display: inline-block;
  padding: 6px 0;
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink);
  border-bottom: 2px solid transparent;
}

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

.nav-list a.is-current {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* 汉堡按钮：桌面隐藏 */
.nav-toggle {
  display: none;
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  padding: 0;
  background-color: transparent;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background-color: var(--ink);
  border-radius: 1px;
}

/* 主内容容器 */
.site-main {
  display: block;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 0 24px;
}

.home-main {
  padding-bottom: 8px;
}

.inner-main {
  max-width: var(--inner-max);
  padding: 20px 24px 40px;
}

/* 页脚 */
.site-footer {
  margin-top: 48px;
  background-color: var(--bg-footer);
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(0, 2fr);
  gap: 32px 48px;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 36px 24px 28px;
}

.footer-brand-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
}

.footer-brand-desc {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(140px, 1fr));
  gap: 24px 32px;
}

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

.footer-list {
  margin-top: 10px;
}

.footer-list li + li {
  margin-top: 6px;
}

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

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

.footer-bottom {
  border-top: 1px solid var(--line);
}

.footer-copy {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 16px 24px;
  font-size: 13px;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   layout · 内页共用：面包屑 / 页面标题区
   -------------------------------------------------------------------------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-soft);
}

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

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

.breadcrumb-sep {
  color: var(--line-strong);
}

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

.page-header {
  padding-bottom: 22px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--line);
}

.page-title {
  font-size: 32px;
  font-weight: 600;
  color: var(--ink);
}

.page-description {
  max-width: 60ch;
  margin-top: 12px;
  font-size: 16px;
}

/* 内页区块通用 */
.section {
  margin-bottom: 40px;
}

.section-title {
  font-size: 22px;
  font-weight: 600;
}

.section-lead,
.section-intro {
  max-width: 62ch;
  margin-top: 10px;
  font-size: 15px;
}

.section-intro a {
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   components · 首页首屏
   -------------------------------------------------------------------------- */
.hero-section {
  padding: 44px 0 40px;
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 40px;
  align-items: start;
}

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

.hero-eyebrow {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}

.hero-title {
  margin-top: 10px;
  font-size: 32px;
  font-weight: 600;
}

.hero-lead {
  max-width: 56ch;
  margin-top: 14px;
  font-size: 16px;
  color: var(--ink-soft);
}

.hero-entries {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.entry-link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: 44px;
  padding: 12px 14px;
  background-color: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
}

.entry-link:hover,
.entry-link:focus-visible {
  border-color: var(--accent);
  color: var(--ink);
  text-decoration: none;
}

.entry-link .entry-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
}

.entry-link .entry-desc {
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-soft);
}

.hero-figure {
  margin: 0;
}

.hero-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-footer);
}

.hero-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   components · 首页模块通用标题组
   -------------------------------------------------------------------------- */
.section-head {
  margin-bottom: 22px;
}

.section-head h2 {
  font-size: 22px;
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   components · 首页题材方向总览
   -------------------------------------------------------------------------- */
.genre-overview-section {
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
}

.genre-overview-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.genre-box {
  padding: 18px 16px;
  background-color: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.genre-name {
  font-size: 17px;
  font-weight: 600;
}

.genre-scope,
.genre-org {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
}

.genre-org {
  color: var(--ink);
}

/* --------------------------------------------------------------------------
   components · 首页封面条目墙
   -------------------------------------------------------------------------- */
.cover-wall-section {
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
}

.cover-wall-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px 20px;
}

.cover-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 10px;
  background-color: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.cover-card:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
}

.cover-figure {
  margin: 0;
}

.cover-figure img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background-color: var(--bg-footer);
}

.cover-title {
  margin-top: 10px;
  font-size: 15px;
  font-weight: 600;
}

.cover-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  margin-top: 6px;
  font-size: 13px;
}

.cover-genre {
  color: var(--ink-soft);
}

.cover-status {
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   components · 首页更新批次与人气位次并列区
   -------------------------------------------------------------------------- */
.timeline-ranking-section {
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
}

.timeline-ranking-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 36px;
}

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

.column-title {
  font-size: 17px;
  font-weight: 600;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.batch-list,
.rank-list {
  margin-top: 14px;
}

.batch-item + .batch-item,
.rank-item + .rank-item {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}

.batch-no,
.rank-no {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
}

.batch-entry,
.rank-entry {
  margin-top: 4px;
  font-size: 15px;
  font-weight: 600;
}

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

.batch-summary,
.rank-note {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   components · 首页字段口径与查阅路径
   -------------------------------------------------------------------------- */
.fields-path-section {
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
}

.fields-path-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 36px;
}

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

.field-table {
  margin-top: 14px;
}

.field-row {
  display: grid;
  grid-template-columns: minmax(110px, 0.6fr) minmax(0, 1.4fr);
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.field-name {
  font-size: 14px;
  font-weight: 600;
}

.field-desc {
  font-size: 14px;
  line-height: 1.7;
}

.path-list {
  margin-top: 14px;
}

.path-step {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.path-step .step-name {
  font-size: 15px;
  font-weight: 600;
}

.path-step .step-desc {
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   components · 首页收录边界与站内索引
   -------------------------------------------------------------------------- */
.boundary-section {
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
}

.boundary-body p {
  max-width: 74ch;
  font-size: 15px;
  line-height: 1.8;
}

.boundary-body p + p {
  margin-top: 12px;
}

.site-index-section {
  padding: 40px 0 8px;
}

.site-index-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 18px;
}

.site-index-item {
  min-width: 0;
  padding: 16px 14px;
  background-color: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.site-index-item a {
  display: inline-block;
  min-height: 24px;
  font-size: 15px;
  font-weight: 600;
}

.index-desc {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   pages · 题材分类（agedm/genres.html）
   -------------------------------------------------------------------------- */
.genre-overview,
.genre-catalog,
.genre-guide,
.related-entry {
  margin-bottom: 40px;
}

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

.genre-overview-item {
  display: grid;
  grid-template-columns: minmax(120px, 0.5fr) minmax(0, 1.5fr);
  gap: 8px 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.genre-overview-item .genre-name {
  grid-row: span 3;
  font-size: 17px;
  font-weight: 600;
}

.genre-overview-item .genre-trait,
.genre-overview-item .genre-scope,
.genre-overview-item .genre-organize {
  font-size: 14px;
  line-height: 1.75;
}

.genre-catalog-group {
  margin-top: 26px;
}

.genre-catalog-name {
  font-size: 17px;
  font-weight: 600;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.cover-card-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 16px;
}

.cover-card-list .cover-card {
  flex-direction: row;
  gap: 14px;
  align-items: flex-start;
  padding: 12px;
}

.cover-card-figure {
  flex: 0 0 96px;
  margin: 0;
}

.cover-card-figure img {
  width: 96px;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background-color: var(--bg-footer);
}

.cover-card-body {
  min-width: 0;
}

.cover-card-title {
  font-size: 15px;
  font-weight: 600;
}

.cover-card-meta,
.cover-card-status {
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-soft);
}

.cover-card-status {
  color: var(--accent);
}

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

.guide-step {
  min-width: 0;
  padding: 16px;
  background-color: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.guide-step-title {
  font-size: 16px;
  font-weight: 600;
}

.guide-step-desc {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.related-entry-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

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

.related-entry-item a {
  display: inline-block;
  min-height: 24px;
  font-size: 15px;
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   pages · 最近更新（agedm/updates.html）
   -------------------------------------------------------------------------- */
.section-batch-rule,
.section-batch-list,
.section-read-order,
.section-related {
  margin-bottom: 40px;
}

.batch-rule-body p {
  max-width: 74ch;
  font-size: 15px;
  line-height: 1.8;
}

.batch-rule-body p + p {
  margin-top: 12px;
}

.batch-rule-body .inline-code {
  padding: 1px 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  background-color: var(--bg-footer);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.batch-group {
  margin-top: 22px;
  padding: 18px;
  background-color: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.batch-head {
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.batch-title {
  font-size: 17px;
  font-weight: 600;
}

.batch-meta {
  margin-top: 6px;
  font-size: 13px;
}

.batch-entries {
  margin-top: 12px;
}

.batch-entries .batch-entry {
  display: grid;
  grid-template-columns: minmax(140px, 0.8fr) minmax(110px, 0.6fr) minmax(0, 2fr);
  gap: 6px 18px;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
}

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

.batch-entries .entry-name {
  font-size: 15px;
  font-weight: 600;
}

.batch-entries .entry-genre {
  font-size: 13px;
  color: var(--accent);
}

.batch-entries .entry-summary {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.batch-figure {
  margin: 0 0 40px;
}

.batch-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-footer);
}

.batch-figure .figure-caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
}

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

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

.step-item .step-name {
  font-size: 16px;
  font-weight: 600;
}

.step-item .step-desc {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.related-card {
  min-width: 0;
  padding: 16px 14px;
  background-color: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.related-card-title {
  font-size: 15px;
  font-weight: 600;
}

.related-card-title a {
  display: inline-block;
  min-height: 24px;
}

.related-card-desc {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   pages · 人气位次（agedm/ranking.html）
   -------------------------------------------------------------------------- */
.ranking-basis,
.ranking-list-section,
.ranking-diff,
.ranking-next {
  margin-bottom: 40px;
}

.ranking-basis p {
  max-width: 74ch;
  margin-top: 12px;
  font-size: 15px;
  line-height: 1.8;
}

.ranking-figure {
  margin: 22px 0 0;
}

.ranking-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-footer);
}

.ranking-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-soft);
}

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

.ranking-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.ranking-no {
  font-size: 20px;
  font-weight: 600;
  color: var(--accent);
  line-height: 1.4;
}

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

.ranking-entry .entry-name {
  font-size: 16px;
  font-weight: 600;
}

.ranking-entry .entry-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin-top: 6px;
  font-size: 13px;
}

.ranking-entry .entry-genre {
  color: var(--ink-soft);
}

.ranking-entry .entry-status {
  color: var(--accent);
}

.ranking-entry .entry-note {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.75;
}

.ranking-diff p {
  max-width: 74ch;
  margin-top: 12px;
  font-size: 15px;
  line-height: 1.8;
}

.ranking-next p {
  max-width: 74ch;
  margin-top: 12px;
  font-size: 15px;
  line-height: 1.8;
}

/* --------------------------------------------------------------------------
   pages · 字段与查阅指引（agedm/fields.html）
   -------------------------------------------------------------------------- */
.field-figure {
  margin: 0 0 36px;
}

.field-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-footer);
}

.field-figure-caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
}

.field-section {
  margin-bottom: 40px;
}

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

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

.field-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 44px;
  padding: 14px 2px;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

.field-summary::after {
  content: "展开";
  flex: 0 0 auto;
  font-size: 13px;
  font-weight: 400;
  color: var(--accent);
}

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

.field-summary:hover {
  color: var(--accent);
}

.field-body {
  padding: 0 2px 16px;
}

.field-body p {
  max-width: 72ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.field-body p + p {
  margin-top: 8px;
}

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

.path-step {
  min-width: 0;
  padding: 16px;
  background-color: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.path-step-no {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
}

.path-step-title {
  margin-top: 6px;
  font-size: 16px;
  font-weight: 600;
}

.path-step p {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.boundary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px 32px;
  margin-top: 18px;
}

.boundary-col {
  min-width: 0;
}

.boundary-subtitle {
  font-size: 16px;
  font-weight: 600;
}

.boundary-col p {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

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

.related-item {
  display: grid;
  grid-template-columns: minmax(160px, 0.6fr) minmax(0, 1.4fr);
  gap: 6px 20px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.related-item a {
  font-size: 15px;
  font-weight: 600;
}

.related-desc {
  font-size: 14px;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   pages · 404
   -------------------------------------------------------------------------- */
.error-main {
  max-width: var(--inner-max);
  padding: 56px 24px 72px;
}

.error-panel {
  max-width: 620px;
}

.error-code {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}

.error-main h1 {
  margin-top: 10px;
  font-size: 32px;
  font-weight: 600;
}

.error-lead {
  max-width: 56ch;
  margin-top: 14px;
  font-size: 16px;
}

.error-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
}

.error-actions li {
  display: flex;
}

.error-action-primary {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 44px;
  padding: 10px 14px;
  font-size: 15px;
  font-weight: 600;
  text-align: center;
  color: var(--ink);
  background-color: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.error-action-primary:hover,
.error-action-primary:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   responsive · ≤1024px
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

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

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

  .timeline-ranking-grid,
  .fields-path-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

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

  .guide-steps,
  .step-list,
  .path-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }
}

/* --------------------------------------------------------------------------
   responsive · ≤768px（含 390px 手机）
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  .top-fact-bar p,
  .header-inner,
  .site-main,
  .inner-main,
  .footer-inner,
  .footer-copy,
  .error-main {
    padding-left: 16px;
    padding-right: 16px;
  }

  /* 移动导航：按钮显示，列表默认收起 */
  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: block;
    padding: 0 16px 16px;
    background-color: var(--bg-page);
    border-bottom: 1px solid var(--line);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0;
    border-top: 1px solid var(--line);
  }

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

  .nav-list li {
    display: block;
  }

  .nav-list a {
    display: block;
    min-height: 44px;
    padding: 11px 2px;
    font-size: 16px;
    border-bottom: 1px solid var(--line);
  }

  .nav-list a.is-current {
    border-bottom-color: var(--line);
  }

  /* 首屏与模块 */
  .hero-section {
    padding: 28px 0 32px;
  }

  .hero-title {
    font-size: 28px;
  }

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

  .genre-overview-section,
  .cover-wall-section,
  .timeline-ranking-section,
  .fields-path-section,
  .boundary-section,
  .site-index-section {
    padding: 30px 0;
  }

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

  .cover-wall-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 14px;
  }

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

  .page-title {
    font-size: 28px;
  }

  .section-title,
  .section-head h2 {
    font-size: 20px;
  }

  .column-title {
    font-size: 16px;
  }

  /* 内页模块 */
  .genre-overview-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .genre-overview-item .genre-name {
    grid-row: auto;
  }

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

  .cover-card-list .cover-card {
    flex-direction: row;
  }

  .guide-steps,
  .step-list,
  .path-steps {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .batch-entries .batch-entry {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .batch-figure {
    margin-bottom: 32px;
  }

  .ranking-item {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 12px;
  }

  .ranking-no {
    font-size: 18px;
  }

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

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

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

  .footer-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px 20px;
  }
}

/* --------------------------------------------------------------------------
   responsive · ≤420px（窄屏收口）
   -------------------------------------------------------------------------- */
@media (max-width: 420px) {
  .cover-wall-grid,
  .related-entry-list,
  .related-grid {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

/* --------------------------------------------------------------------------
   components · 动效增强（不依赖 JS，不影响初始可见性）
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: no-preference) {
  .cover-card,
  .entry-link,
  .error-action-primary {
    transition: transform 0.18s ease, border-color 0.18s ease, color 0.18s ease;
  }
}

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

  .cover-card {
    transition: none;
  }

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