:root {
  --color-primary: #2b4a7d;
  --color-primary-dark: #1f3760;
  --color-bg: #f5f6f8;
  --color-surface: #ffffff;
  --color-text: #23282f;
  --color-muted: #5c646e;
  --color-line: #dfe3e8;
  --color-line-soft: #eaedf1;
  --status-fresh: #1f8a70;
  --status-pending: #b5761f;
  --status-steady: #7a828c;
  --radius-sm: 4px;
  --radius-md: 6px;
  --container: 1120px;
  --gutter: 24px;
  --font-sans: -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;
}

/* =========================================================
   base
   ========================================================= */

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

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

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 400;
  line-height: 1.75;
}

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

p {
  margin: 0;
}

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

ul,
ol {
  list-style: none;
}

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

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

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

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

figure {
  margin: 0;
}

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

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

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

.site-header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  min-height: 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.site-main {
  flex: 1 0 auto;
  width: 100%;
}

.inner-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter) 56px;
}

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

.site-footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 34px var(--gutter) 12px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 28px 32px;
}

/* =========================================================
   components — 品牌与导航
   ========================================================= */

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  color: var(--color-text);
}

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

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0;
}

.brand-sub {
  display: inline-block;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.2;
}

.site-nav {
  position: relative;
}

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

.nav-item {
  display: block;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  font-size: 15px;
  color: var(--color-muted);
  border-bottom: 2px solid transparent;
}

.nav-link:hover {
  color: var(--color-primary);
}

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

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  position: relative;
}

.nav-toggle::before,
.nav-toggle::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  height: 2px;
  background: var(--color-primary);
}

.nav-toggle::before {
  top: 16px;
}

.nav-toggle::after {
  bottom: 16px;
}

/* =========================================================
   components — 通用区块
   ========================================================= */

.section {
  margin-bottom: 40px;
}

.section-head {
  margin-bottom: 18px;
}

.section-title {
  font-size: 22px;
  color: var(--color-text);
}

.section-desc {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
  max-width: 74ch;
}

.section-note {
  margin-top: 14px;
  font-size: 13px;
  color: var(--color-muted);
}

.column-title {
  font-size: 17px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-line);
  margin-bottom: 14px;
}

.column-entry {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 12px;
  font-size: 14px;
  color: var(--color-primary);
}

/* 状态色 */
.status,
.status-tag,
.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  line-height: 1.6;
  white-space: nowrap;
}

.status-normal,
.status-tag.status-normal,
.status-chip-fresh {
  color: var(--status-fresh);
  background: rgba(31, 138, 112, 0.1);
}

.status-pending,
.status-tag.status-pending,
.status-chip-pending {
  color: var(--status-pending);
  background: rgba(181, 118, 31, 0.12);
}

.status-idle,
.status-none,
.status-chip-steady {
  color: var(--status-steady);
  background: rgba(122, 130, 140, 0.12);
}

/* 面包屑与页面标题区 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 20px 0 0;
  font-size: 13px;
  color: var(--color-muted);
}

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

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

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

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

.page-header {
  padding: 18px 0 26px;
  border-bottom: 1px solid var(--color-line);
  margin-bottom: 30px;
}

.page-title {
  font-size: 32px;
  line-height: 1.3;
}

.page-description {
  margin-top: 10px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-muted);
  max-width: 74ch;
}

.page-description a {
  color: var(--color-primary);
}

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

.footer-about {
  max-width: 34ch;
}

.footer-brand {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

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

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

.footer-list li {
  margin-bottom: 2px;
}

.footer-list a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 13px;
  color: var(--color-muted);
}

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

.footer-copy {
  max-width: var(--container);
  margin: 0 auto;
  padding: 16px var(--gutter) 28px;
  font-size: 12px;
  color: var(--color-muted);
  border-top: 1px solid var(--color-line-soft);
}

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

.fact-bar {
  background: var(--color-primary);
  color: #ffffff;
}

.fact-bar-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 8px var(--gutter);
}

.fact-bar-text {
  font-size: 13px;
  line-height: 1.6;
}

.home-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 26px var(--gutter) 56px;
}

/* 首屏线路看板 */
.hero-board {
  margin-bottom: 40px;
}

.hero-board-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
  gap: 32px;
  align-items: start;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 28px;
}

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

.hero-eyebrow {
  font-size: 13px;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.hero-title {
  font-size: 32px;
  line-height: 1.3;
}

.hero-summary {
  margin-top: 14px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-muted);
  max-width: 42ch;
}

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

.hero-path-item {
  display: block;
}

.hero-path-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  font-size: 14px;
  color: var(--color-primary);
  background: rgba(43, 74, 125, 0.07);
  border: 1px solid rgba(43, 74, 125, 0.18);
  border-radius: var(--radius-sm);
}

.hero-path-link:hover {
  background: rgba(43, 74, 125, 0.13);
  color: var(--color-primary-dark);
}

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

.hero-image {
  width: 100%;
  height: 260px;
  object-fit: cover;
  border-radius: var(--radius-md);
  background: var(--color-line-soft);
}

.hero-caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-muted);
}

.hero-status {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.status-chip {
  padding: 4px 10px;
  border: 1px solid currentColor;
  background: transparent;
}

/* 题材方向总览 */
.theme-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.theme-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 16px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.theme-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.theme-name {
  font-size: 16px;
}

.theme-scope {
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--color-muted);
  min-height: 42px;
}

.theme-figure {
  margin-top: 12px;
}

.theme-thumb {
  width: 100%;
  height: 120px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: var(--color-line-soft);
}

.theme-entry {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 10px;
  font-size: 14px;
}

/* 封面条目与更新记录 */
.feed-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

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

.entry-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.entry-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.entry-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.entry-figure {
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--color-line-soft);
}

.entry-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.entry-body {
  padding: 10px 12px 12px;
}

.entry-name {
  font-size: 14px;
  line-height: 1.5;
}

.entry-theme {
  margin-top: 4px;
  font-size: 12px;
  color: var(--color-muted);
}

.entry-summary {
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--color-muted);
}

.batch-list {
  border-top: 1px solid var(--color-line-soft);
}

.batch-item {
  padding: 12px 0;
  border-bottom: 1px solid var(--color-line-soft);
}

.batch-head {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.batch-code {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-primary);
}

.batch-theme {
  margin-top: 4px;
  font-size: 13px;
  color: var(--color-muted);
}

.batch-change {
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--color-text);
}

/* 人气位次与字段摘要 */
.rank-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

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

.rank-list {
  border-top: 1px solid var(--color-line-soft);
}

.rank-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-line-soft);
}

.rank-no {
  flex: 0 0 auto;
  width: 26px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}

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

.rank-name {
  font-size: 15px;
}

.rank-theme {
  margin-top: 2px;
  font-size: 12px;
  color: var(--color-muted);
}

.rank-note {
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--color-muted);
}

.field-summary {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 14px 16px;
}

.field-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  margin-top: 12px;
}

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

.field-desc {
  margin-left: 0;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--color-muted);
}

/* 查阅路径与反馈 */
.path-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.path-step {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
}

.path-details {
  min-width: 0;
}

.path-summary {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  cursor: pointer;
  list-style: none;
}

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

.step-no {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: #ffffff;
  font-size: 13px;
}

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

.step-desc {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-muted);
}

.step-entry {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: auto;
  padding-top: 8px;
  font-size: 14px;
}

.feedback-block {
  margin-top: 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: 16px 18px;
}

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

.feedback-desc {
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-muted);
  max-width: 74ch;
}

.feedback-entry {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 8px;
  font-size: 14px;
}

/* 站内栏目索引 */
.index-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.index-link {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 10px 12px;
  text-align: center;
  font-size: 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.index-link:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

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

.tema-group {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: 28px;
  padding: 22px 0;
  border-bottom: 1px solid var(--color-line);
}

.tema-group:first-of-type {
  padding-top: 0;
}

.tema-group-col {
  min-width: 0;
}

.tema-group-name {
  font-size: 18px;
}

.tema-group-scope {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-muted);
}

.tema-group-subtitle {
  font-size: 14px;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.feature-list li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 6px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-muted);
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  opacity: 0.6;
}

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

.work-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.work-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.work-figure {
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--color-line-soft);
}

.work-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.work-body {
  padding: 12px 14px 14px;
}

.work-name {
  font-size: 15px;
}

.work-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 6px;
  font-size: 12px;
  color: var(--color-muted);
}

.work-tema {
  color: var(--color-muted);
}

.work-summary {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--color-muted);
}

.compare-list {
  display: grid;
  gap: 14px;
}

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

.compare-name {
  font-size: 15px;
}

.compare-text {
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--color-muted);
}

.section-tema-related {
  margin-top: 32px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 18px 20px;
}

.related-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 12px;
}

.related-list a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  font-size: 14px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
}

.related-list a:hover {
  border-color: var(--color-primary);
}

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

.page-layout {
  display: block;
}

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

.timeline-list {
  position: relative;
  padding-left: 0;
}

.timeline-item {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 24px;
  padding-bottom: 22px;
}

.timeline-marker {
  position: relative;
  padding-left: 20px;
  border-left: 2px solid var(--color-line);
}

.timeline-marker::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 2px solid var(--color-primary);
}

.timeline-item:last-child .timeline-marker {
  border-left-color: transparent;
}

.batch-no {
  display: block;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}

.batch-dir {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--color-muted);
}

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

.timeline-heading {
  font-size: 15px;
  margin-bottom: 10px;
}

.change-list {
  display: grid;
  gap: 8px;
}

.change-item {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 8px 10px;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
}

.change-name {
  font-size: 14px;
}

.batch-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.item-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.item-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.item-cover {
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--color-line-soft);
}

.item-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.item-body {
  padding: 10px 12px 12px;
}

.item-name {
  font-size: 14px;
  line-height: 1.5;
}

.item-dir {
  margin-top: 4px;
  font-size: 12px;
  color: var(--color-muted);
}

.item-body .status-tag {
  margin-top: 8px;
}

.field-list {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 6px 18px;
}

.field-item {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 18px;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-line-soft);
}

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

.field-item .field-name {
  margin-top: 0;
}

.field-item .field-desc {
  margin-top: 0;
}

/* =========================================================
   pages — 人气位次
   ========================================================= */

.weici-list-section {
  margin-bottom: 40px;
}

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

.weici-row {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-line-soft);
}

.weici-rank {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.rank-num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
}

.weici-rank img {
  width: 48px;
  height: 64px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: var(--color-line-soft);
}

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

.weici-name {
  font-size: 16px;
}

.weici-tag {
  margin-top: 4px;
  font-size: 13px;
  color: var(--color-muted);
}

.weici-note {
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-muted);
}

.weici-rule-section {
  margin-bottom: 40px;
}

.rule-list {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 6px 18px;
}

.rule-item {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 18px;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-line-soft);
}

.rule-item:last-child {
  border-bottom: 0;
}

.rule-term {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}

.rule-desc {
  margin-left: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--color-muted);
}

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

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 14px;
}

.related-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.related-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

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

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

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

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

.field-sample-figure {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 14px;
}

.field-sample-figure img {
  width: 100%;
  height: auto;
  max-height: 320px;
  object-fit: contain;
  border-radius: var(--radius-sm);
  background: var(--color-line-soft);
}

.field-sample-caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--color-muted);
}

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

.field-item {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--color-line);
}

.field-item:first-of-type {
  border-top: 1px solid var(--color-line);
}

.field-item-name {
  min-width: 0;
}

.field-item-body {
  min-width: 0;
}

.field-item-body .field-name {
  margin-top: 0;
}

.field-tag {
  margin-top: 6px;
  font-size: 12px;
  color: var(--color-primary);
}

.field-meaning {
  font-size: 14px;
  line-height: 1.75;
}

.field-misread {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-muted);
}

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

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

.section-path .path-step {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
}

.path-step-no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
}

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

.path-step-desc {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-muted);
}

.path-step-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: auto;
  padding-top: 10px;
  font-size: 14px;
}

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

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

.feedback-block-title {
  font-size: 15px;
}

.feedback-block-desc {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-muted);
}

.section-feedback .feedback-entry {
  margin-top: 14px;
  font-size: 14px;
}

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

.related-item {
  display: block;
}

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

.related-item a:hover {
  border-color: var(--color-primary);
}

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

.error-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 40px var(--gutter) 56px;
}

.error-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 36px 32px;
}

.error-inner {
  max-width: 60ch;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-primary);
}

.error-title {
  margin-top: 8px;
  font-size: 28px;
}

.error-desc {
  margin-top: 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-muted);
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  font-size: 14px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--color-primary);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: #ffffff;
}

.btn-ghost {
  background: var(--color-surface);
  color: var(--color-primary);
  border-color: var(--color-line);
}

.btn-ghost:hover {
  border-color: var(--color-primary);
}

.error-guide {
  margin-top: 28px;
}

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

.error-link-list a {
  display: flex;
  align-items: center;
  min-height: 52px;
  padding: 10px 14px;
  font-size: 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
}

.error-link-list a:hover {
  border-color: var(--color-primary);
}

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

@media (max-width: 1024px) {
  .theme-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

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

@media (max-width: 900px) {
  .feed-layout,
  .rank-layout {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .hero-image {
    height: 220px;
  }

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

  .timeline-marker {
    border-left: 0;
    padding-left: 0;
  }

  .timeline-marker::before {
    display: none;
  }

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

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

@media (max-width: 768px) {
  .site-header-inner {
    min-height: 56px;
    padding: 0 16px;
    gap: 12px;
  }

  .nav-toggle {
    display: block;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: calc(100% + 1px);
    right: 0;
    min-width: 200px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px;
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    box-shadow: 0 6px 18px rgba(35, 40, 47, 0.08);
  }

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

  .nav-link {
    width: 100%;
    padding: 0 12px;
    border-bottom: 0;
    border-left: 2px solid transparent;
  }

  .nav-link.is-current {
    border-bottom-color: transparent;
    border-left-color: var(--color-primary);
    background: rgba(43, 74, 125, 0.06);
  }

  .inner-main,
  .home-main,
  .error-main {
    padding-left: 16px;
    padding-right: 16px;
  }

  .page-header {
    padding: 14px 0 20px;
    margin-bottom: 24px;
  }

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

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

  .section {
    margin-bottom: 32px;
  }

  .hero-board-inner {
    padding: 20px;
    gap: 20px;
  }

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

  .theme-grid,
  .entry-grid,
  .batch-grid,
  .path-grid,
  .path-steps,
  .work-grid,
  .related-grid,
  .feedback-blocks,
  .error-link-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .theme-scope {
    min-height: 0;
  }

  .tema-group {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  .weici-row {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 12px;
  }

  .site-footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
    padding: 28px 16px 10px;
  }

  .footer-about {
    max-width: none;
  }

  .footer-copy {
    padding: 14px 16px 24px;
  }

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

@media (max-width: 480px) {
  .theme-grid,
  .entry-grid,
  .batch-grid,
  .path-grid,
  .path-steps,
  .work-grid,
  .related-grid,
  .feedback-blocks,
  .error-link-list,
  .index-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-paths {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-path-link {
    justify-content: center;
  }

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

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

/* 增强动效：滚动淡入（仅在 JS 添加类时生效，不影响初始可见） */
.section.is-visible,
.hero-board.is-visible {
  animation: fade-in-up 0.24s ease-out both;
}

@keyframes fade-in-up {
  from {
    opacity: 0.001;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

  .section.is-visible,
  .hero-board.is-visible {
    animation: none;
  }

  .theme-card,
  .entry-card,
  .work-card,
  .item-card,
  .related-card,
  .index-link {
    transition: none;
  }
}