:root {
  --bg-page: #f7f8fa;
  --bg-surface: #ffffff;
  --bg-subtle: #eef1f6;
  --text-main: #23262b;
  --text-sub: #5c626b;
  --text-faint: #8a909a;
  --accent: #3b5bdb;
  --accent-soft: #e6ebfb;
  --status: #0f8a7a;
  --status-soft: #e2f3f0;
  --line: #e2e5ea;
  --line-strong: #ccd2dc;
  --radius: 6px;
  --radius-sm: 4px;
  --shadow-card: 0 1px 2px rgba(35, 38, 43, 0.06), 0 4px 12px rgba(35, 38, 43, 0.04);
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --container: 1160px;
  --gap-lg: 32px;
  --gap-md: 20px;
  --gap-sm: 12px;
}

/* ============================================================
   base · 全站基础
   ============================================================ */

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

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

body.site-body {
  margin: 0;
  background-color: var(--bg-page);
  color: var(--text-main);
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease, background-color 0.15s ease;
}

a:hover {
  color: #2f4bc0;
  text-decoration: underline;
}

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

p {
  margin: 0;
}

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

dl,
dd,
dt {
  margin: 0;
}

figure {
  margin: 0;
}

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

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

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

/* ============================================================
   layout · 骨架容器
   ============================================================ */

.site-header {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--line);
}

.header-upper {
  max-width: var(--container);
  margin: 0 auto;
  padding: 18px 24px 14px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--gap-md);
  flex-wrap: wrap;
}

.brand-logo {
  font-size: 21px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: 0;
}

.brand-logo:hover {
  color: var(--accent);
  text-decoration: none;
}

.brand-slogan {
  color: var(--text-sub);
  font-size: 13.5px;
}

.site-nav {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  border-top: 1px solid var(--line);
}

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

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

.nav-list a {
  display: inline-block;
  padding: 12px 14px;
  color: var(--text-sub);
  font-size: 15px;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

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

.nav-list a.is-current {
  color: var(--accent);
  font-weight: 600;
  border-bottom-color: var(--accent);
}

.nav-toggle {
  display: none;
}

.site-main {
  display: block;
  max-width: var(--container);
  margin: 0 auto;
  padding: 32px 24px 56px;
}

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

.topbar-fact {
  background-color: var(--bg-subtle);
  border-bottom: 1px solid var(--line);
  padding: 9px 24px;
  text-align: center;
  font-size: 13.5px;
  color: var(--text-sub);
}

.site-footer {
  background-color: var(--bg-surface);
  border-top: 1px solid var(--line);
  padding: 40px 24px 24px;
}

.footer-brand,
.footer-groups,
.footer-copyright {
  max-width: var(--container);
  margin: 0 auto;
}

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

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

.footer-slogan {
  margin-top: 4px;
  font-size: 13.5px;
  color: var(--text-sub);
}

.footer-groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap-lg);
  padding: 26px 0 20px;
}

.footer-group-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 10px;
}

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

.footer-links a {
  font-size: 13.5px;
  color: var(--text-sub);
}

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

.footer-copyright {
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--text-faint);
}

/* ============================================================
   components · 通用组件
   ============================================================ */

.section-title {
  font-size: 22px;
  margin-bottom: 8px;
}

.section-lead,
.section-desc,
.section-note {
  color: var(--text-sub);
  font-size: 14.5px;
  max-width: 76ch;
}

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

.section-head {
  margin-bottom: 22px;
}

.section-head .section-note {
  margin-top: 6px;
}

.status-ongoing,
.status-complete,
.status-hiatus {
  display: inline-block;
  padding: 1px 8px;
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  line-height: 1.6;
  white-space: nowrap;
}

.status-ongoing {
  background-color: var(--status-soft);
  color: var(--status);
}

.status-complete {
  background-color: var(--accent-soft);
  color: var(--accent);
}

.status-hiatus {
  background-color: var(--bg-subtle);
  color: var(--text-sub);
}

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

.genre-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 18px 16px;
  display: flex;
  flex-direction: column;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.genre-card:hover {
  background-color: #fbfcfe;
  border-color: var(--line-strong);
}

.genre-name {
  font-size: 16.5px;
  margin-bottom: 8px;
}

.genre-scope {
  font-size: 14px;
  color: var(--text-sub);
  margin-bottom: 10px;
}

.genre-sample,
.genre-represent {
  font-size: 13.5px;
  color: var(--text-sub);
  margin-top: auto;
}

.genre-sample a,
.genre-represent a {
  font-weight: 600;
}

.update-list {
  display: block;
}

.update-row {
  display: grid;
  grid-template-columns: minmax(0, 2.2fr) minmax(80px, 0.9fr) minmax(96px, 1fr) auto;
  align-items: center;
  gap: var(--gap-md);
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.15s ease;
}

.update-row:hover {
  background-color: #fbfcfe;
}

.update-name {
  font-weight: 600;
  color: var(--text-main);
  overflow-wrap: anywhere;
}

.update-genre {
  font-size: 13.5px;
  color: var(--text-sub);
}

.update-progress {
  font-size: 13.5px;
  color: var(--text-sub);
  font-variant-numeric: tabular-nums;
}

.ranking-list {
  display: block;
}

.ranking-item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) minmax(0, 1.2fr);
  align-items: center;
  gap: var(--gap-md);
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.15s ease;
}

.ranking-item:hover {
  background-color: #fbfcfe;
}

.rank-number,
.ranking-rank {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.rank-name {
  font-weight: 600;
  color: var(--text-main);
  overflow-wrap: anywhere;
}

.rank-note {
  font-size: 13.5px;
  color: var(--text-sub);
}

.field-list {
  display: block;
}

.field-list dt {
  font-weight: 600;
  font-size: 14.5px;
  color: var(--text-main);
  margin-top: 12px;
}

.field-list dt:first-child {
  margin-top: 0;
}

.field-list dd {
  font-size: 14px;
  color: var(--text-sub);
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line);
}

.path-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap-md);
}

.path-step {
  background-color: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  position: relative;
}

.step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 10px;
}

.step-title {
  font-size: 15.5px;
  margin-bottom: 6px;
}

.step-text {
  font-size: 14px;
  color: var(--text-sub);
}

.tips-list {
  display: grid;
  gap: var(--gap-md);
}

.tips-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.tips-name,
.tips-heading {
  font-size: 15.5px;
  margin-bottom: 6px;
}

.tips-text,
.tips-item p {
  font-size: 14px;
  color: var(--text-sub);
}

.related-list,
.related-links {
  display: block;
}

.related-list li,
.related-links li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 2px;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
}

.related-item a,
.related-links a {
  font-weight: 600;
  white-space: nowrap;
}

.related-desc {
  color: var(--text-sub);
  font-size: 13.5px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: var(--text-faint);
  margin-bottom: 14px;
}

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

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

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

.page-header {
  margin-bottom: 28px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-title {
  font-size: 28px;
  margin-bottom: 10px;
}

.page-description {
  font-size: 15px;
  color: var(--text-sub);
  max-width: 78ch;
}

/* ============================================================
   pages · 首页
   ============================================================ */

.hero-workbench {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: var(--gap-lg);
  align-items: start;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--line);
}

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

.hero-title {
  font-size: 30px;
  margin-bottom: 14px;
}

.hero-summary {
  font-size: 15.5px;
  color: var(--text-sub);
  max-width: 60ch;
}

.hero-entries {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.entry-link {
  display: inline-block;
  padding: 10px 18px;
  min-height: 44px;
  line-height: 24px;
  border-radius: var(--radius-sm);
  background-color: var(--accent);
  color: #ffffff;
  font-size: 14.5px;
  font-weight: 600;
  border: 1px solid var(--accent);
}

.entry-link:hover {
  background-color: #2f4bc0;
  border-color: #2f4bc0;
  color: #ffffff;
  text-decoration: none;
}

.hero-visual {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background-color: var(--bg-subtle);
}

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

.hero-visual figcaption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text-sub);
  background-color: var(--bg-surface);
  border-top: 1px solid var(--line);
}

.content-media {
  grid-column: 1 / -1;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background-color: var(--bg-surface);
}

.content-media img {
  width: 100%;
  aspect-ratio: 21 / 8;
  object-fit: cover;
}

.content-media figcaption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text-sub);
  border-top: 1px solid var(--line);
}

.genre-overview,
.updates-overview,
.path-guide,
.feedback-entry,
.site-index {
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
}

.genre-more,
.updates-more,
.ranking-more,
.field-more {
  margin-top: 16px;
  font-size: 14px;
}

.genre-more a,
.updates-more a,
.ranking-more a,
.field-more a {
  font-weight: 600;
}

.update-group {
  margin-top: 20px;
}

.update-group:first-of-type {
  margin-top: 0;
}

.update-date {
  font-size: 15px;
  color: var(--text-sub);
  font-weight: 600;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--line-strong);
  margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
}

.overview-pair {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: var(--gap-lg);
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
}

.ranking-overview,
.field-summary {
  min-width: 0;
}

.feedback-text {
  font-size: 15px;
  color: var(--text-sub);
  max-width: 78ch;
}

.feedback-link {
  margin-top: 14px;
  font-size: 14.5px;
}

.feedback-link a {
  font-weight: 600;
}

.index-columns {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: var(--gap-md);
}

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

.index-name {
  font-size: 15.5px;
  margin-bottom: 8px;
}

.index-desc {
  font-size: 13.5px;
  color: var(--text-sub);
}

/* ============================================================
   pages · 题材分类
   ============================================================ */

.page-genre .genre-directions,
.page-genre .genre-tag-map,
.page-genre .genre-suggest {
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.page-genre .genre-card {
  padding-top: 0;
}

.genre-media {
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: var(--bg-subtle);
  margin: -18px -18px 14px;
}

.genre-media img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.genre-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 10px 0;
}

.genre-tags li {
  font-size: 12.5px;
  color: var(--text-sub);
  background-color: var(--bg-subtle);
  border-radius: var(--radius-sm);
  padding: 2px 8px;
}

.genre-entry {
  display: inline-block;
  margin-top: 12px;
  font-size: 14px;
  font-weight: 600;
}

.tag-table {
  background-color: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.tag-table-caption {
  caption-side: top;
  text-align: left;
  padding: 14px 16px;
  font-size: 14px;
  color: var(--text-sub);
  border-bottom: 1px solid var(--line);
}

.tag-table th,
.tag-table td {
  text-align: left;
  padding: 11px 16px;
  font-size: 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.tag-table thead th {
  background-color: var(--bg-subtle);
  font-size: 13.5px;
  color: var(--text-sub);
  font-weight: 600;
}

.tag-table tbody th {
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
}

.tag-table tbody td {
  color: var(--text-sub);
}

.tag-table tbody tr:last-child th,
.tag-table tbody tr:last-child td {
  border-bottom: 0;
}

.suggest-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap-md);
}

.suggest-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.suggest-title {
  font-size: 15.5px;
  margin-bottom: 6px;
}

.suggest-text {
  font-size: 14px;
  color: var(--text-sub);
}

/* ============================================================
   pages · 更新记录
   ============================================================ */

.page-updates .updates-log,
.page-updates .batch-rules,
.page-updates .updates-tips,
.page-updates .updates-related {
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.update-day {
  margin-top: 24px;
}

.update-day:first-of-type {
  margin-top: 0;
}

.update-day-title {
  font-size: 15.5px;
  color: var(--text-sub);
  font-weight: 600;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--line-strong);
  margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
}

.page-updates .update-item {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: var(--gap-md);
  align-items: start;
  padding: 14px 2px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.15s ease;
}

.page-updates .update-item:hover {
  background-color: #fbfcfe;
}

.update-thumb {
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: var(--bg-subtle);
  border: 1px solid var(--line);
}

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

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

.page-updates .update-name {
  font-size: 15.5px;
  font-weight: 600;
}

.update-meta {
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--text-sub);
}

.rules-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap-md);
}

.rule-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  min-width: 0;
}

.rule-name {
  font-size: 15px;
  margin-bottom: 6px;
}

.rule-text {
  font-size: 14px;
  color: var(--text-sub);
}

.rules-note {
  margin-top: 16px;
  font-size: 14px;
}

.rules-note a {
  font-weight: 600;
}

/* ============================================================
   pages · 人气位次
   ============================================================ */

.page-ranking .ranking-section,
.page-ranking .ranking-method,
.page-ranking .ranking-tips,
.page-ranking .ranking-related {
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.page-ranking .ranking-item {
  grid-template-columns: 40px 72px minmax(0, 1fr);
  align-items: start;
  gap: var(--gap-md);
  padding: 14px;
}

.ranking-cover {
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: var(--bg-subtle);
  border: 1px solid var(--line);
}

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

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

.ranking-name {
  font-size: 15.5px;
  margin-bottom: 4px;
}

.ranking-genre {
  font-size: 13.5px;
  color: var(--status);
}

.ranking-note {
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--text-sub);
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap-md);
}

.method-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.method-title {
  font-size: 15px;
  margin-bottom: 6px;
}

.method-card p {
  font-size: 14px;
  color: var(--text-sub);
}

/* ============================================================
   pages · 条目字段说明
   ============================================================ */

.page-field-guide .guide-visual,
.page-field-guide .field-explain,
.page-field-guide .browse-path,
.page-field-guide .correction,
.page-field-guide .related-links {
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.guide-figure {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background-color: var(--bg-surface);
}

.guide-figure img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
}

.guide-figure figcaption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text-sub);
  border-top: 1px solid var(--line);
}

.field-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 10px;
  overflow: hidden;
}

.field-item:last-child {
  margin-bottom: 0;
}

.field-summary {
  cursor: pointer;
  padding: 14px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: background-color 0.15s ease;
}

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

.field-summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  color: var(--accent);
  flex: none;
}

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

.field-summary:hover {
  background-color: #fbfcfe;
}

.field-body {
  padding: 0 18px 16px;
  border-top: 1px solid var(--line);
}

.field-meaning {
  font-size: 14.5px;
  color: var(--text-sub);
  margin-top: 12px;
}

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

.field-label {
  display: inline-block;
  margin-right: 6px;
  padding: 1px 8px;
  border-radius: var(--radius-sm);
  background-color: var(--accent-soft);
  color: var(--accent);
  font-size: 12.5px;
  font-weight: 600;
}

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

.correction-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap-md);
}

.correction-col {
  background-color: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  min-width: 0;
}

.col-title {
  font-size: 15px;
  margin-bottom: 10px;
}

.correction-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  color: var(--text-sub);
}

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

.correction-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 11px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--accent);
}

/* ============================================================
   pages · 404
   ============================================================ */

.error-main {
  padding-top: 56px;
  padding-bottom: 72px;
}

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

.error-code {
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.1;
}

.error-title {
  font-size: 24px;
  margin: 10px 0 12px;
}

.error-text {
  font-size: 15px;
  color: var(--text-sub);
}

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

.error-link {
  display: inline-block;
  padding: 10px 16px;
  min-height: 44px;
  line-height: 24px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background-color: var(--bg-subtle);
  color: var(--text-main);
  font-size: 14px;
  font-weight: 600;
}

.error-link:hover {
  background-color: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

/* ============================================================
   responsive · 768px
   ============================================================ */

@media (max-width: 768px) {
  .header-upper {
    padding: 14px 16px 12px;
    align-items: center;
  }

  .brand-slogan {
    font-size: 12.5px;
  }

  .site-nav {
    padding: 0 16px;
    position: relative;
  }

  .nav-toggle {
    display: block;
    width: 100%;
    text-align: left;
    padding: 12px 0;
    background: none;
    border: 0;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
  }

  .nav-toggle::after {
    content: "☰";
    float: right;
    color: var(--accent);
    font-size: 16px;
  }

  .nav-toggle[aria-expanded="true"]::after {
    content: "×";
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-bottom: 10px;
  }

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

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

  .nav-list a {
    display: block;
    padding: 12px 2px;
    font-size: 15px;
    border-bottom: 1px solid var(--line);
  }

  .nav-list a.is-current {
    border-bottom-color: var(--line);
    border-left: 3px solid var(--accent);
    padding-left: 10px;
  }

  .site-main {
    padding: 24px 16px 44px;
  }

  .topbar-fact {
    padding: 8px 16px;
    font-size: 12.5px;
    text-align: left;
  }

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

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

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

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

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

  .path-steps,
  .page-field-guide .path-steps,
  .suggest-list,
  .method-grid,
  .correction-grid,
  .rules-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .update-row {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 4px 12px;
    padding: 12px 2px;
  }

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

  .page-ranking .ranking-item {
    grid-template-columns: 32px 64px minmax(0, 1fr);
    gap: 12px;
    padding: 14px 2px;
  }

  .ranking-item {
    grid-template-columns: 30px minmax(0, 1fr);
    gap: 4px 12px;
    padding: 12px 2px;
  }

  .rank-note {
    grid-column: 1 / -1;
  }

  .footer-groups {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    padding: 18px 0 12px;
  }

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

  .footer-group-title {
    position: relative;
    margin: 0;
    padding: 13px 24px 13px 0;
    cursor: pointer;
  }

  .footer-group-title::after {
    content: "+";
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    font-family: var(--font-mono);
    color: var(--accent);
    font-weight: 700;
  }

  .footer-group.is-open .footer-group-title::after {
    content: "–";
  }

  .footer-group .footer-links {
    display: none;
    padding-bottom: 12px;
  }

  .footer-group.is-open .footer-links {
    display: block;
  }

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

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

  .tag-table th,
  .tag-table td {
    padding: 10px 12px;
  }

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

/* ============================================================
   responsive · 480px
   ============================================================ */

@media (max-width: 480px) {
  body.site-body {
    font-size: 15.5px;
  }

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

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

  .hero-entries {
    flex-direction: column;
  }

  .entry-link {
    text-align: center;
  }

  .page-updates .update-item {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 12px;
    padding: 12px 0;
  }

  .page-ranking .ranking-item {
    grid-template-columns: 28px 56px minmax(0, 1fr);
    gap: 10px;
  }

  .tag-table {
    display: block;
    overflow-x: auto;
  }

  .related-list li,
  .related-links li {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }

  .related-item a,
  .related-links a {
    white-space: normal;
  }

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

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

  .error-code {
    font-size: 34px;
  }
}