/* ==========================================================================
   虫虫漫画 · 全站样式表
   结构：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base：变量、重置、全站字体与颜色
   -------------------------------------------------------------------------- */
:root {
  --paper: #F7F5F1;
  --ink: #141414;
  --accent: #C8392B;
  --line: #1F1F1F;
  --muted: #5C5C5C;
  --line-soft: #C9C3B8;
  --paper-alt: #FFFFFF;
  --container: 1120px;
  --radius: 6px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Source Han Sans SC", "Noto Sans CJK SC", "WenQuanYi Micro Hei",
    system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
}

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

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

body.site-body {
  margin: 0;
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink);
}

p {
  margin: 0;
}

ul,
ol,
dl,
dd {
  margin: 0;
  padding: 0;
}

li {
  list-style: none;
}

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

figure {
  margin: 0;
}

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

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* --------------------------------------------------------------------------
   layout：容器、页头、主导航、主内容骨架、页脚
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: var(--paper);
  border-bottom: 2px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.brand-mark {
  display: inline-block;
  width: 26px;
  height: 26px;
  background-color: var(--accent);
  border: 2px solid var(--line);
  border-radius: 3px;
}

.brand-name {
  font-size: 21px;
  font-weight: 700;
  letter-spacing: 0;
  white-space: nowrap;
}

.site-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: flex-end;
}

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

.nav-item {
  flex: 0 0 auto;
}

.nav-link {
  display: inline-block;
  padding: 8px 12px;
  font-size: 15px;
  font-weight: 500;
  border-bottom: 3px solid transparent;
  border-radius: 3px;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--line-soft);
}

.nav-link.is-current {
  font-weight: 700;
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  padding: 0;
  background-color: var(--paper-alt);
  border: 2px solid var(--line);
  border-radius: 5px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--ink);
}

.site-main {
  display: block;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px 56px;
}

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

/* 内页统一骨架 */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 4px 0 14px;
  font-size: 14px;
  color: var(--muted);
}

.breadcrumb a {
  color: var(--muted);
  border-bottom: 1px solid var(--line-soft);
}

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

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

.breadcrumb-current {
  color: var(--ink);
  font-weight: 600;
}

.page-header {
  padding: 6px 0 26px;
  border-bottom: 2px solid var(--line);
  margin-bottom: 30px;
}

.page-title {
  font-size: 40px;
  font-weight: 700;
  line-height: 1.2;
}

.page-description,
.page-lead {
  max-width: 760px;
  margin-top: 12px;
  font-size: 16px;
  color: var(--muted);
}

.site-footer {
  background-color: var(--paper-alt);
  border-top: 2px solid var(--line);
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(240px, 1.4fr) repeat(3, minmax(150px, 1fr));
  gap: 28px 32px;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 34px 20px 22px;
}

.footer-brand-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.footer-brand-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.footer-group-title {
  font-size: 15px;
  font-weight: 700;
  padding-bottom: 8px;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
}

.footer-link-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-link {
  display: inline-block;
  padding: 3px 0;
  font-size: 14px;
  color: var(--muted);
}

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

.footer-copyright {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 20px 26px;
  font-size: 13px;
  color: var(--muted);
  border-top: 1px solid var(--line-soft);
}

/* 通用区块标题 */
.section-title {
  font-size: 26px;
  font-weight: 700;
}

.section-intro,
.section-note {
  margin-top: 8px;
  font-size: 15px;
  color: var(--muted);
}

.section-head {
  margin-bottom: 20px;
}

.inline-link {
  color: var(--accent);
  font-weight: 600;
  border-bottom: 1px solid var(--accent);
}

.inline-link:hover,
.inline-link:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* --------------------------------------------------------------------------
   components：卡片、列表、字段、步骤等跨页复用组件
   -------------------------------------------------------------------------- */
.column-title {
  font-size: 20px;
  font-weight: 700;
  padding-bottom: 10px;
  margin-bottom: 16px;
  border-bottom: 2px solid var(--line);
}

/* 封面卡（首页封面条目速览） */
.cover-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.cover-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  background-color: var(--paper-alt);
  border: 2px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.16s ease, border-color 0.16s ease;
}

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

.cover-card:hover,
.cover-card:focus-within {
  transform: translateY(-3px);
  border-color: var(--accent);
}

.cover-name {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.cover-tag {
  font-size: 13px;
  color: var(--muted);
}

.cover-status {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
}

/* 条目卡（题材分类页） */
.entry-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.entry-card {
  display: flex;
  gap: 12px;
  padding: 10px;
  background-color: var(--paper-alt);
  border: 2px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.16s ease, border-color 0.16s ease;
}

.entry-card:hover,
.entry-card:focus-within {
  transform: translateY(-3px);
  border-color: var(--accent);
}

.entry-cover {
  flex: 0 0 88px;
}

.entry-cover img {
  width: 88px;
  height: 118px;
  object-fit: cover;
  border: 1px solid var(--line-soft);
  border-radius: 3px;
  background-color: var(--paper);
}

.entry-info {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.entry-name {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
}

.entry-tag {
  font-size: 13px;
  color: var(--muted);
}

.entry-status {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
}

/* 更新批次块（首页右栏） */
.update-batch {
  padding: 14px 0;
  border-top: 1px solid var(--line-soft);
}

.update-batch:first-of-type {
  border-top: 2px solid var(--line);
}

.batch-title {
  font-size: 16px;
  font-weight: 700;
}

.batch-meta {
  margin: 4px 0 10px;
  font-size: 13px;
  color: var(--muted);
}

.batch-entry-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.batch-entry-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--line-soft);
}

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

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

.batch-entry-tag {
  font-size: 13px;
  color: var(--muted);
}

.batch-entry-type {
  margin-left: auto;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
}

.update-more,
.rank-more,
.field-more {
  margin-top: 14px;
  font-size: 14px;
}

/* 位次行（首页与位次页共用基础） */
.rank-list {
  display: flex;
  flex-direction: column;
}

.rank-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: 10px 2px;
  border-bottom: 1px solid var(--line-soft);
}

.rank-row:first-child {
  border-top: 2px solid var(--line);
}

.rank-no,
.rank-index {
  flex: 0 0 40px;
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
}

.rank-name {
  flex: 1 1 160px;
  font-size: 16px;
  font-weight: 600;
}

.rank-tag,
.rank-topic {
  font-size: 13px;
  color: var(--muted);
}

/* 字段摘要（首页右栏） */
.field-summary-list {
  display: flex;
  flex-direction: column;
}

.field-summary-item {
  padding: 10px 0;
  border-bottom: 1px solid var(--line-soft);
}

.field-summary-item:first-child {
  border-top: 2px solid var(--line);
}

.field-name {
  font-size: 15px;
  font-weight: 700;
}

.field-desc {
  margin-top: 4px;
  font-size: 14px;
  color: var(--muted);
}

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

.path-step-item {
  padding: 16px;
  background-color: var(--paper-alt);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.path-step-no {
  display: inline-block;
  min-width: 30px;
  padding: 2px 8px;
  margin-bottom: 10px;
  font-size: 14px;
  font-weight: 700;
  text-align: center;
  color: var(--paper);
  background-color: var(--line);
  border-radius: 3px;
}

.path-step-title {
  font-size: 17px;
  font-weight: 700;
}

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

.path-step-link {
  display: inline-block;
  margin-top: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
}

.path-step-link:hover,
.path-step-link:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* --------------------------------------------------------------------------
   pages：首页
   -------------------------------------------------------------------------- */
.top-fact-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 20px;
  padding: 9px 20px;
  background-color: var(--line);
  color: var(--paper);
  font-size: 14px;
}

.top-fact-text {
  flex: 1 1 320px;
}

.top-fact-home {
  flex: 0 0 auto;
  padding: 3px 10px;
  color: var(--paper);
  border: 1px solid var(--paper);
  border-radius: 3px;
  font-weight: 600;
}

.top-fact-home:hover,
.top-fact-home:focus-visible {
  color: var(--line);
  background-color: var(--paper);
}

/* 首屏封面墙 */
.hero-section {
  padding: 34px 0 40px;
  border-bottom: 2px solid var(--line);
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: 40px;
  align-items: start;
}

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

.hero-title {
  font-size: 40px;
  font-weight: 700;
  line-height: 1.22;
}

.hero-summary {
  margin-top: 16px;
  font-size: 16px;
  color: var(--muted);
}

.hero-entry-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
}

.hero-entry-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  padding: 12px 14px;
  background-color: var(--paper-alt);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.hero-entry-link {
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
}

.hero-entry-link:hover,
.hero-entry-link:focus-visible {
  color: var(--ink);
}

.hero-entry-note {
  font-size: 13px;
  color: var(--muted);
}

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

.hero-feature {
  border: 2px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper-alt);
  padding: 10px;
}

.hero-feature img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: 1px solid var(--line-soft);
  border-radius: 3px;
  background-color: var(--paper);
}

.hero-feature-caption {
  margin-top: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
}

.hero-thumb-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.hero-thumb-item {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 7px;
  background-color: var(--paper-alt);
  border: 2px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.16s ease, border-color 0.16s ease;
}

.hero-thumb-item:hover,
.hero-thumb-item:focus-within {
  transform: translateY(-3px);
  border-color: var(--accent);
}

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

.hero-thumb-name {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.4;
}

.hero-thumb-tag {
  font-size: 12px;
  color: var(--muted);
}

/* 题材方向总览 */
.topic-overview {
  padding: 40px 0;
  border-bottom: 2px solid var(--line);
}

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

.topic-card {
  display: flex;
  flex-direction: column;
  padding: 16px;
  background-color: var(--paper-alt);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.topic-name {
  font-size: 19px;
  font-weight: 700;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--line);
}

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

.topic-entry-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 14px;
}

.topic-entry-item {
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--line-soft);
}

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

.topic-entry-link {
  font-size: 15px;
  font-weight: 600;
}

.topic-entry-link:hover,
.topic-entry-link:focus-visible {
  color: var(--accent);
}

/* 封面条目速览 + 最近更新记录 */
.feed-update-section {
  padding: 40px 0;
  border-bottom: 2px solid var(--line);
}

.feed-update-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: 32px;
  margin-top: 22px;
  align-items: start;
}

.feed-column {
  min-width: 0;
}

.update-column {
  min-width: 0;
  padding: 18px;
  background-color: var(--paper-alt);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

/* 人气位次参考 + 字段口径摘要 */
.rank-field-section {
  padding: 40px 0;
  border-bottom: 2px solid var(--line);
}

.rank-field-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 32px;
  margin-top: 22px;
  align-items: start;
}

.rank-column {
  min-width: 0;
}

.field-column {
  min-width: 0;
  padding: 18px;
  background-color: var(--paper-alt);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

/* 查阅路径与反馈说明 */
.path-guide-section {
  padding: 40px 0;
  border-bottom: 2px solid var(--line);
}

.path-guide-section .path-step-list {
  margin-top: 22px;
}

.feedback-note {
  margin-top: 28px;
  padding: 18px;
  background-color: var(--paper-alt);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.feedback-title {
  font-size: 17px;
  font-weight: 700;
}

.feedback-text {
  margin-top: 8px;
  font-size: 15px;
  color: var(--muted);
}

/* 站内栏目索引 */
.column-index-section {
  padding: 40px 0 8px;
}

.column-index-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
  margin-top: 22px;
}

.index-column {
  display: flex;
  flex-direction: column;
  padding: 14px;
  background-color: var(--paper-alt);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.index-name {
  font-size: 16px;
  font-weight: 700;
}

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

.index-link {
  margin-top: 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
}

.index-link:hover,
.index-link:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* --------------------------------------------------------------------------
   pages：题材分类
   -------------------------------------------------------------------------- */
.topic-anchor-section {
  margin-bottom: 34px;
  padding: 18px;
  background-color: var(--paper-alt);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.anchor-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.anchor-item {
  min-width: 0;
}

.anchor-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 48px;
  padding: 10px 14px;
  font-size: 15px;
  font-weight: 700;
  background-color: var(--paper);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.anchor-link:hover,
.anchor-link:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
}

.anchor-count {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
}

.topic-block {
  padding: 28px 0;
  border-top: 2px solid var(--line);
}

.topic-block-header {
  margin-bottom: 18px;
}

.topic-block-title {
  font-size: 24px;
  font-weight: 700;
}

.topic-block-desc {
  max-width: 760px;
  margin-top: 8px;
  font-size: 15px;
  color: var(--muted);
}

.related-section {
  padding: 34px 0 8px;
  border-top: 2px solid var(--line);
}

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

.related-item {
  padding: 16px;
  background-color: var(--paper-alt);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.related-name {
  font-size: 17px;
  font-weight: 700;
}

.related-link:hover,
.related-link:focus-visible {
  color: var(--accent);
}

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

/* --------------------------------------------------------------------------
   pages：更新记录
   -------------------------------------------------------------------------- */
.page-layout {
  display: block;
}

.batch-overview {
  padding-bottom: 30px;
  margin-bottom: 30px;
  border-bottom: 2px solid var(--line);
}

.batch-summary-list {
  display: flex;
  flex-direction: column;
  margin-top: 18px;
  border-top: 2px solid var(--line);
}

.batch-summary-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  padding: 12px 2px;
  border-bottom: 1px solid var(--line-soft);
}

.batch-code {
  flex: 0 0 96px;
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
}

.batch-topics {
  flex: 1 1 200px;
  font-size: 14px;
  color: var(--muted);
}

.batch-count {
  flex: 0 0 auto;
  font-size: 14px;
  font-weight: 600;
}

.batch-jump {
  flex: 0 0 auto;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
}

.batch-jump:hover,
.batch-jump:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.batch-block {
  padding: 24px 0;
  border-top: 2px solid var(--line);
}

.batch-block-head {
  margin-bottom: 14px;
}

.batch-block-title {
  font-size: 21px;
  font-weight: 700;
}

.batch-block-meta {
  margin-top: 6px;
  font-size: 14px;
  color: var(--muted);
}

.batch-figure {
  margin-bottom: 16px;
  padding: 10px;
  background-color: var(--paper-alt);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.batch-figure img {
  width: 100%;
  max-height: 320px;
  aspect-ratio: 16 / 7;
  object-fit: cover;
  border: 1px solid var(--line-soft);
  border-radius: 3px;
  background-color: var(--paper);
}

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

.batch-change-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line-soft);
}

.batch-change-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  padding: 10px 2px;
  border-bottom: 1px solid var(--line-soft);
}

.change-name {
  flex: 1 1 200px;
  font-size: 15px;
  font-weight: 600;
}

.change-topic {
  flex: 0 0 auto;
  font-size: 13px;
  color: var(--muted);
}

.change-type {
  flex: 0 0 auto;
  margin-left: auto;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
}

.change-guide {
  padding-top: 30px;
  margin-top: 30px;
  border-top: 2px solid var(--line);
}

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

.change-guide-col {
  min-width: 0;
  padding: 18px;
  background-color: var(--paper-alt);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.subsection-title {
  font-size: 18px;
  font-weight: 700;
  padding-bottom: 8px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
}

.change-type-list {
  display: flex;
  flex-direction: column;
}

.change-type-name {
  margin-top: 10px;
  font-size: 15px;
  font-weight: 700;
}

.change-type-name:first-of-type {
  margin-top: 0;
}

.change-type-desc {
  margin-top: 3px;
  font-size: 14px;
  color: var(--muted);
}

.guide-step-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 18px;
}

.guide-step-item {
  padding: 14px 16px;
  background-color: var(--paper-alt);
  border: 2px solid var(--line);
  border-radius: var(--radius);
  font-size: 15px;
}

/* --------------------------------------------------------------------------
   pages：人气位次
   -------------------------------------------------------------------------- */
.rank-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.rank-section {
  min-width: 0;
}

.rank-section .rank-list {
  margin-top: 16px;
}

.rank-note {
  flex: 1 1 120px;
  font-size: 13px;
  color: var(--muted);
}

.rank-media-section {
  grid-column: 1;
  min-width: 0;
  padding-top: 28px;
  margin-top: 28px;
  border-top: 2px solid var(--line);
}

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

.rank-media-item {
  padding: 8px;
  background-color: var(--paper-alt);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.rank-media-item img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border: 1px solid var(--line-soft);
  border-radius: 3px;
  background-color: var(--paper);
}

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

.rank-aside {
  grid-column: 2;
  grid-row: 1 / span 2;
  min-width: 0;
  padding: 20px;
  background-color: var(--paper-alt);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.aside-text {
  margin-top: 12px;
  font-size: 15px;
  color: var(--muted);
}

.aside-subtitle {
  margin-top: 20px;
  padding-bottom: 8px;
  font-size: 17px;
  font-weight: 700;
  border-bottom: 1px solid var(--line-soft);
}

.aside-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 12px;
}

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

.aside-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  background-color: var(--accent);
  border-radius: 1px;
}

/* --------------------------------------------------------------------------
   pages：条目字段说明
   -------------------------------------------------------------------------- */
.field-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

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

.field-figure {
  margin: 18px 0 26px;
  padding: 10px;
  background-color: var(--paper-alt);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.field-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line-soft);
  border-radius: 3px;
  background-color: var(--paper);
}

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

.field-item {
  padding: 18px 0;
  border-top: 1px solid var(--line-soft);
}

.field-item:first-of-type {
  border-top: 2px solid var(--line);
}

.field-main .field-name {
  font-size: 18px;
  font-weight: 700;
}

.field-meaning {
  margin-top: 8px;
  font-size: 15px;
  color: var(--ink);
}

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

.field-rule-label {
  display: inline-block;
  padding: 1px 7px;
  margin-right: 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--paper);
  background-color: var(--line);
  border-radius: 3px;
}

.field-aside {
  min-width: 0;
  padding: 20px;
  background-color: var(--paper-alt);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.misread-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 16px;
}

.misread-item {
  padding: 12px 14px;
  background-color: var(--paper);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.misread-wrong {
  font-size: 14px;
  color: var(--muted);
  text-decoration: line-through;
}

.misread-right {
  margin-top: 6px;
  font-size: 14px;
  font-weight: 600;
}

.aside-note {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 2px solid var(--line);
}

.aside-note-title {
  font-size: 16px;
  font-weight: 700;
}

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

.path-section {
  padding-top: 30px;
  margin-top: 34px;
  border-top: 2px solid var(--line);
}

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

.path-step {
  display: flex;
  flex-direction: column;
  padding: 16px;
  background-color: var(--paper-alt);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.path-step-index {
  display: inline-block;
  align-self: flex-start;
  min-width: 30px;
  padding: 2px 8px;
  margin-bottom: 10px;
  font-size: 14px;
  font-weight: 700;
  text-align: center;
  color: var(--paper);
  background-color: var(--line);
  border-radius: 3px;
}

.path-step-text {
  margin-top: 6px;
  font-size: 14px;
  color: var(--muted);
}

.path-step .path-step-link {
  margin-top: auto;
  padding-top: 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  border-bottom: 1px solid transparent;
}

.path-step .path-step-link:hover,
.path-step .path-step-link:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* --------------------------------------------------------------------------
   pages：404
   -------------------------------------------------------------------------- */
.error-main {
  padding-top: 40px;
}

.error-panel {
  max-width: 720px;
  margin: 0 auto;
  padding: 34px 26px;
  text-align: left;
  background-color: var(--paper-alt);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.error-code {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
}

.error-title {
  margin-top: 10px;
  font-size: 32px;
  font-weight: 700;
}

.error-text {
  margin-top: 12px;
  font-size: 16px;
  color: var(--muted);
}

.error-entry-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 22px;
}

.error-entry-link {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 10px 14px;
  font-size: 15px;
  font-weight: 700;
  background-color: var(--paper);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.error-entry-link:hover,
.error-entry-link:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
}

.error-note {
  margin-top: 20px;
  font-size: 14px;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   responsive：1024 / 768 / 480 三档断点
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .hero-title,
  .page-title {
    font-size: 34px;
  }

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

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

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

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

  .feed-update-layout,
  .rank-field-layout,
  .rank-layout,
  .field-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
  }

  .rank-aside,
  .rank-media-section {
    grid-column: 1;
    grid-row: auto;
  }

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

@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 12px;
    padding: 12px 16px;
  }

  .nav-toggle {
    display: flex;
    margin-left: auto;
  }

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

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    width: 100%;
    padding-top: 6px;
    border-top: 1px solid var(--line-soft);
  }

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

  .nav-link {
    display: block;
    padding: 12px 14px;
    min-height: 44px;
    font-size: 16px;
    background-color: var(--paper-alt);
    border: 2px solid var(--line);
    border-bottom-width: 2px;
    border-radius: var(--radius);
  }

  .nav-link.is-current {
    border-color: var(--accent);
  }

  .site-main {
    padding: 0 16px 44px;
  }

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

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

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

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

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

  .path-step-list,
  .path-steps,
  .change-guide-grid,
  .related-list,
  .rank-media-list,
  .error-entry-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .footer-inner {
    padding: 28px 16px 18px;
  }

  .footer-copyright {
    padding: 12px 16px 22px;
  }

  .batch-code {
    flex: 0 0 84px;
  }

  .change-type {
    margin-left: 0;
  }
}

@media (max-width: 480px) {
  body.site-body {
    font-size: 15px;
  }

  .top-fact-bar {
    padding: 8px 14px;
    font-size: 13px;
  }

  .brand-name {
    font-size: 19px;
  }

  .hero-title,
  .page-title {
    font-size: 26px;
  }

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

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

  .entry-card {
    flex-direction: column;
  }

  .entry-cover {
    flex: 0 0 auto;
  }

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

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

  .error-panel {
    padding: 24px 18px;
  }

  .error-title {
    font-size: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cover-card,
  .entry-card,
  .hero-thumb-item {
    transition: none;
  }

  .cover-card:hover,
  .entry-card:hover,
  .hero-thumb-item:hover {
    transform: none;
  }
}