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

/* --------------------------------------------------------------------------
   base · 变量与基础重置
   -------------------------------------------------------------------------- */
:root {
  --paper: #f7f5f1;
  --paper-raised: #fffdfa;
  --ink: #1f3a5f;
  --ink-soft: #3f6b9c;
  --accent: #c4553b;
  --muted: #6b6f76;
  --line: #e2ded7;
  --line-strong: #cfc9bf;
  --radius: 6px;
  --radius-sm: 4px;
  --shell: 1180px;
  --gutter: 24px;
  --shadow-soft: 0 1px 2px rgba(31, 58, 95, 0.06);
  --shadow-lift: 0 6px 16px rgba(31, 58, 95, 0.1);
}

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

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

body {
  margin: 0;
  background-color: var(--paper);
  color: #2b3138;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.75;
  font-variant-numeric: tabular-nums;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--ink);
  font-weight: 600;
  line-height: 1.4;
}

p {
  margin: 0;
}

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

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

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

img {
  display: block;
  max-width: 100%;
  height: auto;
  background-color: #e9e5de;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

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

/* --------------------------------------------------------------------------
   layout · 全站骨架
   -------------------------------------------------------------------------- */
.site-body {
  min-height: 100vh;
  background-color: var(--paper);
  color: #2b3138;
  font-size: 15px;
  line-height: 1.75;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background-color: var(--paper-raised);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  max-width: var(--shell);
  min-height: 64px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 600;
}

.brand:hover,
.brand:focus-visible {
  color: var(--ink);
}

.brand-mark {
  display: block;
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  border: 2px solid var(--ink);
  border-radius: var(--radius-sm);
  background-color: var(--paper);
  box-shadow: inset 0 0 0 4px var(--paper-raised), inset 0 0 0 6px var(--accent);
}

.brand-text {
  font-size: 18px;
  letter-spacing: 0;
}

.site-nav {
  display: block;
}

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

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-size: 15px;
  font-weight: 400;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link:focus-visible {
  background-color: #efece5;
  color: var(--accent);
}

.nav-link.is-current {
  color: var(--accent);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background-color: var(--paper-raised);
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--ink);
}

.site-main {
  display: block;
  width: 100%;
}

.inner-main {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 28px var(--gutter) 64px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 13px;
}

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

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

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

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

.page-header {
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.page-title {
  margin: 0 0 10px;
  color: var(--ink);
  font-size: 32px;
  font-weight: 600;
  line-height: 1.35;
}

.page-description {
  max-width: 860px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.site-footer {
  margin-top: 40px;
  background-color: #f1eee7;
  border-top: 1px solid var(--line);
}

.footer-inner {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 36px var(--gutter) 28px;
}

.footer-groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.footer-group-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
}

.footer-icon {
  display: block;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  border: 1px solid var(--ink-soft);
  border-radius: 3px;
  background-color: transparent;
  box-shadow: inset 4px 0 0 var(--accent);
}

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

.footer-links a {
  display: inline-block;
  min-height: 24px;
  color: var(--ink-soft);
  font-size: 14px;
}

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

.footer-note,
.footer-copy {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.footer-copy {
  margin-top: 10px;
  padding-top: 0;
  border-top: 0;
}

/* --------------------------------------------------------------------------
   components · 通用模块
   -------------------------------------------------------------------------- */
.section-head {
  margin-bottom: 22px;
}

.section-title {
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 22px;
  font-weight: 600;
}

.section-desc,
.section-intro,
.section-lead,
.section-note {
  max-width: 820px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

.section-intro,
.section-lead,
.section-note {
  margin-bottom: 20px;
}

.section-footnote {
  margin-top: 18px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

.section-footnote a {
  margin-right: 12px;
}

.visually-grouped {
  margin-bottom: 0;
  padding-top: 8px;
}

/* 通用卡片抬升 */
.cover-card,
.entry-card,
.index-card,
.method-card,
.combo-card,
.genre-column,
.genre-row,
.genre-brief-item,
.entry-link-item,
.aside-block,
.sidebar-block,
.feedback-note,
.error-inner {
  transition: transform 0.18s ease, box-shadow 0.18s ease,
    border-color 0.18s ease;
}

/* --------------------------------------------------------------------------
   pages · 首页
   -------------------------------------------------------------------------- */
.fact-bar {
  background-color: var(--ink);
  color: #eef1f5;
}

.fact-bar-text {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 8px var(--gutter);
  font-size: 13px;
  line-height: 1.6;
}

.home-main {
  display: block;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter) 56px;
}

/* 首屏定位区 */
.hero-section {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 36px;
  align-items: start;
  padding: 40px 0 44px;
  border-bottom: 1px solid var(--line);
}

.hero-text {
  max-width: 560px;
}

.hero-eyebrow {
  margin-bottom: 12px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
}

.hero-title {
  margin-bottom: 16px;
  color: var(--ink);
  font-size: 32px;
  font-weight: 600;
  line-height: 1.35;
}

.hero-desc {
  color: #3c434b;
  font-size: 15px;
  line-height: 1.8;
}

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

.hero-path {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper-raised);
}

.hero-path a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: 44px;
  padding: 12px 14px;
  color: var(--ink);
}

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

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

.hero-path-note {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.hero-visual {
  margin: 0;
}

.hero-visual img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.hero-caption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

/* 题材方向总览 */
.genre-overview {
  padding: 44px 0;
  border-bottom: 1px solid var(--line);
}

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

.genre-column {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper-raised);
  box-shadow: var(--shadow-soft);
}

.genre-column:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-lift);
}

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

.genre-scope {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.genre-picks {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1 1 auto;
}

.genre-picks a {
  display: inline-block;
  padding: 2px 0;
  color: var(--ink-soft);
  font-size: 14px;
}

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

.genre-enter {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
}

/* 封面速览 / 更新记录 并列区 */
.home-duo {
  padding: 44px 0;
  border-bottom: 1px solid var(--line);
}

.duo-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 32px;
  align-items: start;
  margin-top: 24px;
}

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

.duo-title {
  margin-bottom: 6px;
  font-size: 17px;
  font-weight: 600;
}

.duo-desc {
  margin-bottom: 16px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.cover-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.cover-card {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper-raised);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.cover-card:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-lift);
}

.cover-card a {
  display: flex;
  flex-direction: column;
  height: 100%;
  color: var(--ink);
}

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

.cover-figure {
  margin: 0;
}

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

.cover-name {
  padding: 10px 12px 2px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
}

.cover-meta {
  padding: 0 12px 12px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

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

.update-item {
  display: grid;
  grid-template-columns: 62px 62px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.update-date {
  color: var(--muted);
  font-size: 12px;
}

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

.update-name {
  min-width: 0;
  color: var(--ink);
  font-size: 14px;
  overflow-wrap: break-word;
}

.update-name:hover,
.update-name:focus-visible {
  color: var(--accent);
}

.update-tag {
  padding: 2px 8px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.duo-more {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 14px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
}

/* 人气位次参考 + 字段口径摘要 */
.duo-col-rank .rank-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.rank-item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

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

.rank-name {
  min-width: 0;
  color: var(--ink);
  font-size: 14px;
  overflow-wrap: break-word;
}

.rank-tag {
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.duo-col-field .field-brief {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.field-brief-row {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

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

.field-value {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

/* 查阅路径与反馈 */
.guide-section {
  padding: 44px 0;
  border-bottom: 1px solid var(--line);
}

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

.step-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper-raised);
}

.step-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background-color: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
}

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

.step-text {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.feedback-note {
  margin-top: 22px;
  padding: 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  background-color: var(--paper-raised);
}

.feedback-title {
  margin-bottom: 6px;
  font-size: 16px;
  font-weight: 600;
}

.feedback-text {
  max-width: 760px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.feedback-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 8px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
}

/* 站内栏目索引 */
.site-index {
  padding: 44px 0 8px;
}

.index-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
}

.index-card {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper-raised);
  box-shadow: var(--shadow-soft);
}

.index-card:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-lift);
}

.index-card a {
  display: flex;
  flex-direction: column;
  gap: 6px;
  height: 100%;
  min-height: 44px;
  padding: 16px 14px;
  color: var(--ink);
}

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

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

.index-note {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   pages · 题材分类
   -------------------------------------------------------------------------- */
.section {
  margin-bottom: 44px;
}

.genre-brief-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.genre-brief-item {
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper-raised);
}

.genre-brief-item:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-soft);
}

.genre-brief-name {
  margin-bottom: 6px;
  font-size: 16px;
  font-weight: 600;
}

.genre-brief-text {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.genre-row {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 28px;
  align-items: start;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.genre-row:last-child {
  border-bottom: 1px solid var(--line);
}

.genre-row-intro {
  min-width: 0;
}

.genre-row-name {
  margin-bottom: 8px;
  font-size: 17px;
  font-weight: 600;
}

.genre-row-text {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

.genre-row-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 6px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
}

.genre-row-entries {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  min-width: 0;
}

.entry-card {
  min-width: 0;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper-raised);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.entry-card:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-lift);
}

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

.entry-card-body {
  padding: 12px 14px 14px;
}

.entry-card-title {
  margin-bottom: 4px;
  font-size: 14px;
  font-weight: 600;
}

.entry-card-meta {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

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

.entry-link-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper-raised);
}

.entry-link-item:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-soft);
}

.entry-link-title {
  font-size: 16px;
  font-weight: 600;
}

.entry-link-text {
  flex: 1 1 auto;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.entry-link-anchor {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   pages · 最近更新
   -------------------------------------------------------------------------- */
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 760px) minmax(0, 380px);
  gap: 32px;
  align-items: start;
}

.page-layout.layout-shell {
  grid-template-columns: minmax(0, 760px) minmax(0, 380px);
}

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

.update-timeline {
  min-width: 0;
}

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

.timeline-item {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.timeline-thumb {
  margin: 0;
}

.timeline-thumb img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

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

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

.timeline-name {
  margin: 4px 0 6px;
  font-size: 16px;
  font-weight: 600;
  overflow-wrap: break-word;
}

.timeline-meta {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.updates-aside {
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 0;
}

.aside-block {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper-raised);
  box-shadow: var(--shadow-soft);
}

.aside-title {
  margin-bottom: 10px;
  font-size: 16px;
  font-weight: 600;
}

.aside-text {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.aside-text + .aside-text {
  margin-top: 10px;
}

.aside-steps {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 12px;
  counter-reset: aside-step;
}

.aside-step {
  position: relative;
  padding-left: 28px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
  counter-increment: aside-step;
}

.aside-step::before {
  content: counter(aside-step);
  position: absolute;
  top: 2px;
  left: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
}

.batch-tag {
  display: inline-block;
  margin-right: 6px;
  padding: 1px 7px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   pages · 人气位次
   -------------------------------------------------------------------------- */
.ranking-list-section,
.ranking-method-section,
.ranking-genre-section {
  min-width: 0;
  margin-bottom: 40px;
}

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

.ranking-row {
  display: grid;
  grid-template-columns: 40px 62px minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.rank-cover {
  margin: 0;
}

.rank-cover img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

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

.rank-info .rank-name {
  display: block;
  margin-bottom: 4px;
  font-size: 15px;
  font-weight: 600;
}

.rank-meta {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.rank-badge {
  padding: 3px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

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

.method-card {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper-raised);
}

.method-card:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-soft);
}

.method-title {
  margin-bottom: 6px;
  font-size: 16px;
  font-weight: 600;
}

.method-card p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.genre-rank-map {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.genre-rank-item {
  display: grid;
  grid-template-columns: 120px 120px minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.genre-rank-name {
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
}

.genre-rank-count {
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
}

.genre-rank-range {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 0;
}

.sidebar-block {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper-raised);
  box-shadow: var(--shadow-soft);
}

.sidebar-title {
  margin-bottom: 10px;
  font-size: 16px;
  font-weight: 600;
}

.sidebar-block p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

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

.sidebar-list li {
  padding-left: 16px;
  position: relative;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.sidebar-list li::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent);
}

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

.sidebar-links a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  color: var(--ink-soft);
  font-size: 13px;
}

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

/* --------------------------------------------------------------------------
   pages · 条目字段说明
   -------------------------------------------------------------------------- */
.field-figure {
  margin-bottom: 44px;
}

.field-figure-media {
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper-raised);
  overflow: hidden;
}

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

.field-figure-caption {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.field-table-section,
.boundary-section,
.verify-section {
  margin-bottom: 44px;
}

.field-table {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.field-row {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 24px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.field-row .field-name {
  font-size: 15px;
  font-weight: 600;
}

.field-desc {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

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

.boundary-col {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper-raised);
}

.boundary-col-in {
  border-left: 3px solid var(--ink-soft);
}

.boundary-col-out {
  border-left: 3px solid var(--accent);
}

.boundary-title {
  margin-bottom: 12px;
  font-size: 16px;
  font-weight: 600;
}

.boundary-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.boundary-list li {
  position: relative;
  padding-left: 16px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.boundary-list li::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--line-strong);
}

.boundary-col-in .boundary-list li::before {
  background-color: var(--ink-soft);
}

.boundary-col-out .boundary-list li::before {
  background-color: var(--accent);
}

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

.verify-step {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper-raised);
}

.verify-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background-color: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
}

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

.verify-desc {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.verify-note {
  margin-top: 18px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

/* --------------------------------------------------------------------------
   pages · 查阅路径
   -------------------------------------------------------------------------- */
.guide-figure {
  margin: 0 0 40px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper-raised);
  overflow: hidden;
}

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

.guide-figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.guide-steps {
  margin-bottom: 44px;
}

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

.guide-steps .step-item {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
}

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

.guide-steps .step-name {
  margin-bottom: 4px;
}

.guide-steps .step-body p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.guide-combo {
  margin-bottom: 44px;
}

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

.combo-card {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper-raised);
}

.combo-card:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-soft);
}

.combo-name {
  margin-bottom: 6px;
  font-size: 16px;
  font-weight: 600;
}

.combo-card p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.guide-feedback {
  margin-bottom: 44px;
}

.feedback-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.feedback-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper-raised);
}

.feedback-item summary {
  min-height: 44px;
  padding: 12px 16px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

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

.feedback-item summary::after {
  content: "＋";
  float: right;
  color: var(--accent);
  font-weight: 600;
}

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

.feedback-item summary:hover,
.feedback-item summary:focus-visible {
  color: var(--accent);
}

.feedback-item p {
  padding: 0 16px 16px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.guide-related {
  margin-bottom: 20px;
}

.related-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.related-list li {
  min-width: 0;
}

.related-list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper-raised);
  color: var(--ink);
  font-size: 14px;
}

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

/* --------------------------------------------------------------------------
   pages · 404
   -------------------------------------------------------------------------- */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 52vh;
  padding: 56px var(--gutter) 64px;
}

.error-inner {
  width: 100%;
  max-width: 640px;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper-raised);
  text-align: left;
}

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

.error-inner h1 {
  margin: 8px 0 12px;
  font-size: 26px;
  font-weight: 600;
}

.error-text {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.error-btn {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background-color: var(--paper);
  color: var(--ink);
  font-size: 14px;
}

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

.error-link {
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   responsive · 断点适配
   -------------------------------------------------------------------------- */
@media (max-width: 1080px) {
  .genre-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

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

  .updates-aside,
  .sidebar {
    width: 100%;
  }
}

@media (max-width: 900px) {
  .hero-section {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding: 32px 0 36px;
  }

  .hero-text {
    max-width: none;
  }

  .duo-columns {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

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

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

@media (max-width: 768px) {
  :root {
    --gutter: 16px;
  }

  .header-inner {
    min-height: 58px;
    flex-wrap: wrap;
    padding-top: 6px;
    padding-bottom: 6px;
  }

  .brand-text {
    font-size: 17px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    flex: 1 0 100%;
    order: 3;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px 0 10px;
    border-top: 1px solid var(--line);
  }

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

  .nav-link {
    min-height: 44px;
    padding: 0 8px;
    border-radius: 0;
    font-size: 15px;
  }

  .nav-link.is-current {
    border-left: 3px solid var(--accent);
    padding-left: 12px;
  }

  .inner-main {
    padding: 20px var(--gutter) 48px;
  }

  .page-header {
    margin-bottom: 24px;
    padding-bottom: 16px;
  }

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

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

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

  .genre-name,
  .duo-title,
  .genre-row-name,
  .method-title,
  .combo-name,
  .aside-title,
  .sidebar-title,
  .boundary-title,
  .feedback-title,
  .verify-name,
  .entry-link-title,
  .genre-brief-name {
    font-size: 16px;
  }

  .step-name,
  .timeline-name {
    font-size: 16px;
  }

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

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

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

  .update-item {
    grid-template-columns: 58px 56px minmax(0, 1fr);
  }

  .update-tag {
    grid-column: 3;
    justify-self: start;
  }

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

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

  .genre-brief-list,
  .entry-link-list,
  .method-grid,
  .boundary-columns,
  .combo-grid {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .timeline-item {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 14px;
  }

  .ranking-row {
    grid-template-columns: 32px 54px minmax(0, 1fr);
    gap: 10px;
  }

  .rank-badge {
    grid-column: 3;
    justify-self: start;
  }

  .genre-rank-item {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 6px 12px;
  }

  .genre-rank-range {
    grid-column: 1 / -1;
  }

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

  .error-inner {
    padding: 24px 20px;
  }
}

@media (max-width: 480px) {
  .cover-grid {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

  .update-item {
    grid-template-columns: 56px minmax(0, 1fr);
  }

  .update-batch {
    grid-column: 2;
    justify-self: start;
  }

  .update-name,
  .update-tag {
    grid-column: 2;
  }

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

  .ranking-row {
    grid-template-columns: 28px 48px minmax(0, 1fr);
  }

  .related-list a {
    width: 100%;
    justify-content: center;
  }
}