:root {
  --bg: #faf8f5;
  --ink: #1c1b19;
  --ink-soft: #6b6560;
  --line: #e2ddd6;
  --accent: #a33a2c;
  --accent-dark: #8a2f24;
  --green: #2f4f45;
  --surface: #ffffff;
  --container: 1200px;
  --radius: 6px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
  --font-narrow: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-mono: "SFMono-Regular", "Menlo", "Consolas", "Liberation Mono", monospace;
}

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

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

body.site-body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent-dark);
}

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

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-narrow);
  font-weight: 500;
  line-height: 1.3;
  color: var(--ink);
}

p {
  margin: 0 0 1em;
}

p:last-child {
  margin-bottom: 0;
}

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

/* ============================================================
   layout — 全站骨架
   ============================================================ */

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

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
  height: 68px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand {
  font-family: var(--font-narrow);
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
  flex-shrink: 0;
}

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

.site-nav {
  margin-left: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-list li {
  display: flex;
}

.nav-list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 15px;
  color: var(--ink-soft);
  white-space: nowrap;
}

.nav-list a:hover {
  color: var(--ink);
}

.nav-list a.is-current {
  color: var(--accent);
  font-weight: 500;
}

.lang-entry {
  flex-shrink: 0;
  font-size: 13px;
  color: var(--ink-soft);
  padding-left: 22px;
  border-left: 1px solid var(--line);
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

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

.site-main {
  display: block;
}

.inner-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px 90px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 26px 0 0;
  font-size: 13px;
  color: var(--ink-soft);
}

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

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

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

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

.page-header {
  max-width: 780px;
  padding: 30px 0 48px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 56px;
}

.page-title {
  font-size: 38px;
  font-weight: 500;
  line-height: 1.25;
  margin-bottom: 16px;
}

.page-description {
  font-size: 16px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.page-description a {
  color: var(--accent);
  border-bottom: 1px solid rgba(163, 58, 44, 0.35);
}

.section {
  margin-bottom: 84px;
}

.section-title {
  font-size: 26px;
  font-weight: 500;
  margin-bottom: 14px;
}

.section-desc,
.section-lead,
.section-intro {
  max-width: 720px;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.section-lead,
.section-intro {
  margin-bottom: 34px;
}

.section-head {
  margin-bottom: 34px;
}

.section-more {
  margin-top: 28px;
}

.section-more a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 15px;
  font-weight: 500;
  color: var(--accent);
  border-bottom: 1px solid rgba(163, 58, 44, 0.35);
}

.section-media {
  margin-bottom: 34px;
}

.section-media img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.section-media figcaption {
  margin-top: 12px;
  font-size: 13px;
  color: var(--ink-soft);
}

/* ============================================================
   components — 通用组件
   ============================================================ */

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.data-table caption {
  caption-side: top;
  text-align: left;
  padding: 0 0 14px;
  font-size: 13px;
  color: var(--ink-soft);
}

.data-table thead th {
  background: #f2eee8;
  font-family: var(--font-narrow);
  font-weight: 600;
  font-size: 13px;
  text-align: left;
  color: var(--ink);
  padding: 13px 16px;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.data-table tbody th {
  text-align: left;
  font-weight: 600;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.data-table tbody td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  vertical-align: top;
  line-height: 1.7;
}

.data-table tbody tr:last-child th,
.data-table tbody tr:last-child td {
  border-bottom: none;
}

.field-list {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 6px 20px;
}

.field-list .field-name {
  font-family: var(--font-narrow);
  font-weight: 600;
  font-size: 14px;
  padding-top: 16px;
  color: var(--ink);
}

.field-list .field-desc {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.field-list .field-desc:last-child {
  border-bottom: none;
}

.path-list {
  counter-reset: path;
  max-width: 820px;
}

.path-list .path-step {
  position: relative;
  padding: 0 0 22px 46px;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.8;
  counter-increment: path;
}

.path-list .path-step::before {
  content: counter(path, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  width: 34px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.path-list .path-step:last-child {
  padding-bottom: 0;
}

.section-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 34px;
}

.link-primary,
.link-secondary {
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  padding: 0 24px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 500;
}

.link-primary {
  background: var(--accent);
  color: #fff;
}

.link-primary:hover {
  background: var(--accent-dark);
  color: #fff;
}

.link-secondary {
  border: 1px solid var(--line);
  color: var(--ink);
  background: var(--surface);
}

.link-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.column-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 12px;
}

/* ============================================================
   pages — 首页
   ============================================================ */

.home-main {
  padding-bottom: 20px;
}

.hero {
  border-bottom: 1px solid var(--line);
  margin-bottom: 84px;
}

.hero-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 72px 32px 76px;
  display: grid;
  grid-template-columns: minmax(520px, 1fr) minmax(360px, 460px);
  gap: 64px;
  align-items: start;
}

.hero-text {
  padding-top: 8px;
}

.hero-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 20px;
}

.hero-title {
  font-size: 46px;
  font-weight: 500;
  line-height: 1.22;
  margin-bottom: 22px;
}

.hero-lead {
  font-size: 17px;
  color: var(--ink-soft);
  line-height: 1.85;
  max-width: 560px;
  margin-bottom: 40px;
}

.hero-channels {
  display: grid;
  grid-template-columns: repeat(2, minmax(220px, 1fr));
  gap: 24px;
}

.channel-block {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 22px 22px 20px;
}

.channel-heading {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.channel-desc {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.7;
  margin-bottom: 16px;
}

.channel-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
  border-bottom: 1px solid rgba(163, 58, 44, 0.35);
}

.channel-link + .channel-link {
  margin-left: 20px;
}

.hero-media img {
  width: 100%;
  height: 440px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.hero-media figcaption {
  margin-top: 14px;
  font-size: 13px;
  color: var(--ink-soft);
}

.section-topic-overview,
.section-coverwall,
.section-recent,
.section-ranking,
.section-boundary,
.section-pages {
  max-width: var(--container);
  margin-left: auto;
  margin-right: auto;
  padding: 0 32px;
}

.topic-rows {
  border-top: 1px solid var(--line);
}

.topic-row {
  display: grid;
  grid-template-columns: minmax(150px, 200px) minmax(200px, 1.4fr) minmax(180px, 1.2fr) minmax(180px, 1.2fr) auto;
  gap: 24px;
  align-items: baseline;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
  transition: border-color 0.2s ease;
}

.topic-row:hover {
  border-bottom-color: var(--accent);
}

.topic-name {
  font-size: 18px;
  font-weight: 600;
}

.topic-trait,
.topic-organize,
.topic-rep {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.topic-link {
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.cover-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

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

.cover-figure {
  margin-bottom: 16px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--surface);
}

.cover-figure img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.cover-card:hover .cover-figure {
  border-color: var(--accent);
}

.cover-card:hover .cover-figure img {
  transform: scale(1.02);
}

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

.cover-tag {
  font-size: 13px;
  color: var(--green);
  margin-bottom: 4px;
}

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

.recent-groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.recent-group {
  border-top: 2px solid var(--ink);
  padding-top: 18px;
}

.recent-month {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
}

.recent-items {
  display: flex;
  flex-direction: column;
}

.recent-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.recent-item:last-child {
  border-bottom: none;
}

.recent-name {
  font-size: 15px;
  color: var(--ink);
}

.recent-tag {
  font-size: 12px;
  color: var(--green);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1px 8px;
}

.ranking-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.ranking-block {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
}

.ranking-name {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.ranking-basis {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.7;
  padding-bottom: 16px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.ranking-items {
  counter-reset: rank;
}

.ranking-item {
  position: relative;
  counter-increment: rank;
  padding: 12px 0 12px 34px;
  font-size: 15px;
  border-bottom: 1px solid var(--line);
}

.ranking-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.ranking-item::before {
  content: counter(rank);
  position: absolute;
  left: 0;
  top: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
}

.boundary-layout {
  display: grid;
  grid-template-columns: minmax(360px, 1fr) minmax(360px, 1fr);
  gap: 48px;
}

.boundary-subtitle {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 18px;
}

.boundary-text {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.85;
  margin-bottom: 20px;
}

.boundary-points {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.boundary-points li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.boundary-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 1px;
  background: var(--accent);
}

.boundary-more {
  margin-top: 24px;
}

.boundary-more a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 14px;
  font-weight: 500;
  border-bottom: 1px solid rgba(163, 58, 44, 0.35);
}

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

.pages-col {
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.pages-heading {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
}

.pages-desc {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
  margin-bottom: 14px;
}

.pages-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 14px;
  font-weight: 500;
}

/* ============================================================
   pages — 题材分类
   ============================================================ */

.tema-table-wrap {
  overflow-x: auto;
  margin-bottom: 8px;
}

.tema-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.tema-table-caption {
  caption-side: top;
  text-align: left;
  padding: 0 0 14px;
  font-size: 13px;
  color: var(--ink-soft);
}

.tema-table thead th {
  background: #f2eee8;
  font-family: var(--font-narrow);
  font-weight: 600;
  font-size: 13px;
  text-align: left;
  padding: 13px 16px;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.tema-table tbody th {
  text-align: left;
  font-weight: 600;
  padding: 16px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  white-space: nowrap;
}

.tema-table tbody td {
  padding: 16px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  line-height: 1.7;
  vertical-align: top;
}

.tema-table tbody tr:last-child th,
.tema-table tbody tr:last-child td {
  border-bottom: none;
}

.section-tema-detail {
  max-width: 900px;
}

.tema-chapter {
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.tema-chapter:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.tema-chapter-title {
  font-size: 21px;
  font-weight: 600;
  margin-bottom: 12px;
}

.tema-chapter-summary {
  font-size: 15px;
  color: var(--green);
  line-height: 1.8;
  margin-bottom: 14px;
}

.tema-chapter p {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.85;
}

.tema-map-list {
  border-top: 1px solid var(--line);
}

.tema-map-item {
  display: grid;
  grid-template-columns: minmax(160px, 220px) minmax(0, 1fr);
  gap: 32px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.tema-map-name {
  font-size: 18px;
  font-weight: 600;
}

.tema-map-desc {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.8;
  margin-bottom: 18px;
}

.tema-map-media img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

/* ============================================================
   pages — 作品索引
   ============================================================ */

.section-field-dict,
.section-filter-guide,
.section-result-table,
.section-boundary {
  max-width: 100%;
}

.field-table tbody th {
  white-space: nowrap;
}

.filter-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
}

.filter-column {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 26px 22px;
}

.filter-column p {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.8;
  margin-bottom: 16px;
}

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

.filter-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--ink);
  line-height: 1.7;
}

.filter-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 1px;
  background: var(--accent);
}

.result-table-wrap,
.section-result-table {
  overflow-x: auto;
}

.result-table {
  min-width: 760px;
}

.result-table tbody td {
  color: var(--ink);
}

.result-table .cell-cover {
  width: 76px;
  padding: 12px 16px;
}

.result-table .cell-cover img {
  width: 56px;
  height: 74px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.boundary-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 40px;
}

.boundary-column p {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.85;
  margin-bottom: 16px;
}

.boundary-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.boundary-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.boundary-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 1px;
  background: var(--accent);
}

.section-footnote {
  margin-top: 30px;
  font-size: 14px;
  color: var(--ink-soft);
}

.section-footnote a {
  margin-right: 18px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

/* ============================================================
   pages — 最近更新
   ============================================================ */

.update-timeline,
.update-legend,
.update-method,
.update-path {
  margin-bottom: 84px;
}

.update-timeline h2,
.update-legend h2,
.update-method h2,
.update-path h2 {
  font-size: 26px;
  font-weight: 500;
  margin-bottom: 14px;
}

.update-month {
  border-top: 1px solid var(--line);
  padding-top: 26px;
  margin-bottom: 42px;
}

.update-month:last-child {
  margin-bottom: 0;
}

.update-month-title {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 18px;
}

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

.update-item {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.update-item:last-child {
  border-bottom: none;
}

.update-thumb img {
  width: 96px;
  height: 126px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.update-name {
  font-family: var(--font-narrow);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}

.update-meta {
  font-size: 13px;
  color: var(--green);
  margin-bottom: 8px;
}

.update-note {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.legend-list {
  border-top: 1px solid var(--line);
  max-width: 820px;
}

.legend-item {
  display: grid;
  grid-template-columns: minmax(120px, 180px) minmax(0, 1fr);
  gap: 24px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.legend-item dt {
  font-family: var(--font-narrow);
  font-weight: 600;
  font-size: 15px;
}

.legend-item dd {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.method-body {
  max-width: 820px;
}

.method-body p {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.85;
}

.path-note {
  margin-top: 28px;
  font-size: 14px;
  color: var(--ink-soft);
}

.path-note a {
  margin-right: 18px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

/* ============================================================
   pages — 榜单排行
   ============================================================ */

.list-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.list-block {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px 20px;
}

.list-block-head {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 8px;
}

.list-block-title {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 8px;
}

.list-block-basis {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.7;
}

.list-block-items {
  counter-reset: list-rank;
}

.list-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.list-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.list-item-cover {
  position: relative;
  counter-increment: list-rank;
}

.list-item-cover img {
  width: 56px;
  height: 74px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.list-item-cover::before {
  content: counter(list-rank);
  position: absolute;
  left: -2px;
  top: -2px;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1;
  padding: 4px 6px;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius);
}

.list-item-name {
  font-size: 15px;
  color: var(--ink);
  line-height: 1.6;
}

.basis-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.basis-block {
  border-top: 1px solid var(--line);
  padding-top: 20px;
}

.basis-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 12px;
}

.basis-text {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.tag-item {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  font-size: 14px;
  color: var(--green);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.relation-body {
  max-width: 820px;
}

.relation-body p {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.85;
}

/* ============================================================
   pages — 阅读说明
   ============================================================ */

.section-read-guide,
.section-boundary,
.section-faq,
.section-feedback {
  margin-bottom: 84px;
}

.guide-figure {
  margin-bottom: 40px;
}

.guide-figure img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.guide-figure figcaption {
  margin-top: 12px;
  font-size: 13px;
  color: var(--ink-soft);
}

.guide-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.guide-step {
  border-top: 1px solid var(--line);
  padding-top: 20px;
}

.guide-step .step-index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 10px;
}

.guide-step .step-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
}

.guide-step .step-text {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.guide-step .step-text a {
  margin-right: 12px;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.scope-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.scope-item {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.scope-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 1px;
  background: var(--accent);
}

.faq-list {
  max-width: 900px;
  border-top: 1px solid var(--line);
}

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

.faq-question {
  display: flex;
  align-items: center;
  min-height: 56px;
  padding: 14px 40px 14px 0;
  position: relative;
  font-family: var(--font-narrow);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "";
  position: absolute;
  right: 8px;
  top: 50%;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--ink-soft);
  border-bottom: 2px solid var(--ink-soft);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-question::after {
  transform: translateY(-30%) rotate(-135deg);
}

.faq-answer {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.85;
  padding: 0 40px 20px 0;
}

.feedback-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.feedback-item {
  border-top: 1px solid var(--line);
  padding-top: 20px;
}

.feedback-name {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
}

.feedback-text {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.feedback-text a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.feedback-note {
  margin-top: 30px;
  font-size: 14px;
  color: var(--ink-soft);
}

/* ============================================================
   pages — 404
   ============================================================ */

.error-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 90px 32px 120px;
}

.error-block {
  max-width: 720px;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 18px;
}

.error-block h1 {
  font-size: 34px;
  font-weight: 500;
  margin-bottom: 18px;
}

.error-text {
  font-size: 16px;
  color: var(--ink-soft);
  line-height: 1.85;
  margin-bottom: 34px;
}

.error-paths {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 32px;
  margin-bottom: 34px;
}

.error-paths li a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 15px;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  width: 100%;
}

.error-paths li a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.error-home-link {
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  padding: 0 24px;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 500;
}

.error-home-link:hover {
  background: var(--accent-dark);
  color: #fff;
}

/* ============================================================
   components — 页脚
   ============================================================ */

.site-footer {
  background: #f2eee8;
  border-top: 1px solid var(--line);
  margin-top: 40px;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 60px 32px 34px;
}

.footer-tasks {
  padding-bottom: 30px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 40px;
}

.footer-tasks-title {
  font-family: var(--font-narrow);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 14px;
}

.footer-tasks-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
}

.footer-tasks-list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 15px;
  color: var(--ink);
}

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

.footer-groups {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 32px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line);
}

.footer-group-title {
  font-family: var(--font-narrow);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 14px;
}

.footer-group-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-group-list a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  font-size: 14px;
  color: var(--ink-soft);
}

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

.footer-bottom {
  padding-top: 28px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
}

.footer-about {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.75;
  max-width: 620px;
  margin: 0;
}

.footer-copy {
  font-size: 13px;
  color: var(--ink-soft);
  margin: 0;
}

/* ============================================================
   responsive
   ============================================================ */

@media (max-width: 1080px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr) minmax(300px, 380px);
    gap: 44px;
  }

  .topic-row {
    grid-template-columns: minmax(140px, 180px) minmax(0, 1fr) minmax(0, 1fr) auto;
  }

  .topic-organize {
    display: none;
  }
}

@media (max-width: 960px) {
  .header-inner {
    padding: 0 24px;
    gap: 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 0 24px;
    box-shadow: 0 12px 24px rgba(28, 27, 25, 0.06);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0 16px;
  }

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

  .nav-list a {
    min-height: 48px;
    font-size: 16px;
    border-bottom: 1px solid var(--line);
    width: 100%;
  }

  .nav-list li:last-child a {
    border-bottom: none;
  }

  .lang-entry {
    margin-left: 0;
    padding-left: 0;
    border-left: none;
  }

  .inner-main {
    padding: 0 24px 70px;
  }

  .page-title {
    font-size: 32px;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    padding: 52px 24px 56px;
    gap: 40px;
  }

  .hero-title {
    font-size: 38px;
  }

  .hero-media img {
    height: 340px;
  }

  .section-topic-overview,
  .section-coverwall,
  .section-recent,
  .section-ranking,
  .section-boundary,
  .section-pages {
    padding: 0 24px;
  }

  .cover-grid,
  .recent-groups,
  .ranking-grid,
  .list-columns,
  .basis-columns,
  .guide-steps,
  .feedback-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
  }

  .topic-row {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px 20px;
    align-items: start;
  }

  .topic-name {
    grid-column: 1;
  }

  .topic-trait,
  .topic-rep {
    grid-column: 1 / -1;
  }

  .topic-link {
    grid-column: 2;
    grid-row: 1;
    justify-self: end;
  }

  .boundary-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
  }

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

  .tema-map-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

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

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

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

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

  .header-inner {
    padding: 0 18px;
    height: 62px;
  }

  .site-nav {
    top: 62px;
    padding: 0 18px;
  }

  .brand {
    font-size: 18px;
  }

  .inner-main {
    padding: 0 18px 60px;
  }

  .breadcrumb {
    padding-top: 20px;
    font-size: 12px;
    flex-wrap: wrap;
  }

  .page-header {
    padding: 22px 0 34px;
    margin-bottom: 40px;
  }

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

  .section {
    margin-bottom: 60px;
  }

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

  .hero-inner {
    padding: 40px 18px 46px;
    gap: 32px;
  }

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

  .hero-lead {
    font-size: 15px;
    margin-bottom: 30px;
  }

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

  .channel-link + .channel-link {
    margin-left: 0;
    margin-top: 4px;
    display: flex;
  }

  .hero-media img {
    height: 240px;
  }

  .section-topic-overview,
  .section-coverwall,
  .section-recent,
  .section-ranking,
  .section-boundary,
  .section-pages {
    padding: 0 18px;
  }

  .cover-grid,
  .recent-groups,
  .ranking-grid,
  .list-columns,
  .basis-columns,
  .guide-steps,
  .feedback-list {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .cover-figure img {
    height: 260px;
  }

  .topic-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
    padding: 20px 0;
  }

  .topic-link {
    grid-column: 1;
    grid-row: auto;
    justify-self: start;
  }

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

  .section-media img,
  .guide-figure img {
    height: 220px;
  }

  .tema-map-media img {
    height: 180px;
  }

  .update-item {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 16px;
  }

  .update-thumb img {
    width: 76px;
    height: 100px;
  }

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

  .result-table .cell-cover {
    width: 64px;
    padding: 10px 12px;
  }

  .result-table .cell-cover img {
    width: 48px;
    height: 64px;
  }

  .faq-question {
    font-size: 15px;
    padding-right: 34px;
  }

  .faq-answer {
    font-size: 14px;
    padding-right: 10px;
  }

  .footer-inner {
    padding: 44px 18px 28px;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 10px;
  }

  .error-main {
    padding: 60px 18px 80px;
  }

  .error-block h1 {
    font-size: 26px;
  }
}