/* ============================================================
   base / reset
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: #2c3e50;
  background-color: #f7f3ee;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: 600;
  line-height: 1.4;
  color: #2c3e50;
}

p {
  margin: 0;
}

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

a {
  color: #c05b3c;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #a3482e;
}

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

button {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  border: none;
  background: none;
  cursor: pointer;
  padding: 0;
}

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

figure {
  margin: 0;
}

details summary {
  cursor: pointer;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
   layout / shell
   ============================================================ */
.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: #f7f3ee;
}

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

.header-shell,
.footer-shell,
.hero-layout,
.main-grid,
.update-strip,
.board-overview,
.join-banner,
.page-layout,
.tab-switch,
.page-header,
.breadcrumb,
.content-block,
.task-result-confirm,
.filter-note,
.cause-check-section,
.process-section,
.filter-section,
.layout-shell,
.suggestion-banner,
.related-boards,
.update-timeline,
.new-content,
.rule-groups,
.core-rules,
.rules-figure,
.feedback-process {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ============================================================
   components / header
   ============================================================ */
.site-header {
  background-color: #ffffff;
  border-bottom: 2px solid #c05b3c;
  position: relative;
  z-index: 100;
}

.header-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  padding-top: 8px;
  padding-bottom: 8px;
}

.brand {
  flex-shrink: 0;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  font-size: 20px;
  font-weight: 700;
  color: #2c3e50;
  letter-spacing: 0;
}

.brand-link:hover {
  color: #2c3e50;
}

.brand-name {
  line-height: 1.3;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  color: #2c3e50;
  min-height: 44px;
}

.nav-toggle-icon {
  display: block;
  width: 18px;
  height: 2px;
  background-color: #2c3e50;
  position: relative;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background-color: #2c3e50;
}

.nav-toggle-icon::before {
  top: -6px;
}

.nav-toggle-icon::after {
  top: 6px;
}

.nav-toggle-text {
  font-size: 14px;
}

.site-nav {
  display: flex;
  align-items: center;
}

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

.nav-list li {
  position: relative;
}

.nav-list a {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  color: #2c3e50;
  border-radius: 4px;
  white-space: nowrap;
  line-height: 1.5;
}

.nav-list a:hover {
  color: #c05b3c;
  background-color: #f7f3ee;
}

.nav-list a.is-current {
  color: #c05b3c;
  font-weight: 600;
  background-color: #f7f3ee;
}

/* ============================================================
   components / breadcrumb
   ============================================================ */
.breadcrumb {
  padding-top: 16px;
  padding-bottom: 0;
  font-size: 14px;
  color: #6b7a8a;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

.breadcrumb a {
  color: #6b7a8a;
}

.breadcrumb a:hover {
  color: #c05b3c;
}

.breadcrumb-sep {
  color: #b8ac9e;
}

.breadcrumb-current {
  color: #2c3e50;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

/* ============================================================
   components / page header
   ============================================================ */
.page-header {
  padding-top: 24px;
  padding-bottom: 20px;
}

.page-title {
  font-size: 30px;
  font-weight: 700;
  color: #2c3e50;
  line-height: 1.35;
}

.page-description {
  margin-top: 8px;
  font-size: 16px;
  color: #5a6b7a;
  max-width: 760px;
}

/* ============================================================
   components / tab switch
   ============================================================ */
.tab-switch {
  display: flex;
  gap: 8px;
  padding-top: 4px;
  padding-bottom: 20px;
  border-bottom: 1px solid #e9e0d5;
}

.tab-btn,
.tab-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 8px 20px;
  font-size: 15px;
  font-weight: 500;
  color: #5a6b7a;
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.tab-btn:hover,
.tab-item:hover {
  border-color: #c05b3c;
  color: #c05b3c;
}

.tab-btn.is-active,
.tab-item.is-active {
  background-color: #c05b3c;
  border-color: #c05b3c;
  color: #ffffff;
}

/* ============================================================
   components / topic list & items
   ============================================================ */
.topic-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.topic-item {
  padding: 20px 0;
  border-bottom: 1px solid #e9e0d5;
}

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

.topic-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}

.topic-title a {
  color: #2c3e50;
}

.topic-title a:hover {
  color: #c05b3c;
}

.topic-excerpt {
  font-size: 15px;
  color: #5a6b7a;
  line-height: 1.7;
  margin-bottom: 8px;
}

.topic-status {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  padding: 2px 10px;
  border-radius: 4px;
  line-height: 1.6;
}

.status-essence {
  background-color: #fdf0e8;
  color: #c05b3c;
  border: 1px solid #e8c4b4;
}

.status-pending {
  background-color: #f0f2f5;
  color: #6b7a8a;
  border: 1px solid #d8dee4;
}

.status-solved {
  background-color: #eaf4ec;
  color: #2e7d4f;
  border: 1px solid #c4dfcc;
}

.status-resolved {
  background-color: #eaf4ec;
  color: #2e7d4f;
  border: 1px solid #c4dfcc;
}

.status-featured {
  background-color: #fdf0e8;
  color: #c05b3c;
  border: 1px solid #e8c4b4;
}

.status-normal {
  background-color: #f0f2f5;
  color: #6b7a8a;
  border: 1px solid #d8dee4;
}

.status-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  padding: 2px 10px;
  border-radius: 4px;
  line-height: 1.6;
}

/* ============================================================
   components / section title
   ============================================================ */
.section-title {
  font-size: 22px;
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid #c05b3c;
  display: inline-block;
}

.section-lead {
  font-size: 15px;
  color: #5a6b7a;
  margin-bottom: 20px;
  max-width: 780px;
}

/* ============================================================
   components / content media
   ============================================================ */
.content-media {
  margin: 16px 0;
}

.content-media img {
  width: 100%;
  height: auto;
  border-radius: 6px;
  border: 1px solid #e9e0d5;
}

.content-media figcaption {
  font-size: 13px;
  color: #8a7a6a;
  padding-top: 8px;
  line-height: 1.6;
}

.content-media-inline {
  max-width: 640px;
}

/* ============================================================
   components / footer
   ============================================================ */
.site-footer {
  background-color: #2c3e50;
  color: #d5dde4;
  margin-top: 60px;
}

.footer-shell {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  padding-top: 48px;
  padding-bottom: 40px;
}

.footer-col h3 {
  font-size: 16px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 14px;
}

.footer-about p {
  font-size: 14px;
  line-height: 1.7;
  color: #b8c4ce;
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul a {
  font-size: 14px;
  color: #b8c4ce;
  line-height: 1.6;
}

.footer-col ul a:hover {
  color: #ffffff;
}

.footer-meta p {
  font-size: 14px;
  color: #b8c4ce;
  line-height: 1.7;
  margin-bottom: 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 16px 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: #8a9aa8;
  max-width: 1200px;
  margin: 0 auto;
}

/* ============================================================
   pages / index
   ============================================================ */
.hero-section {
  background-color: #ffffff;
  border-bottom: 1px solid #e9e0d5;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 40px;
  align-items: stretch;
  padding-top: 40px;
  padding-bottom: 40px;
}

.hero-visual {
  display: flex;
  align-items: center;
}

.hero-figure {
  width: 100%;
  height: 100%;
  min-height: 320px;
  border-radius: 6px;
  overflow: hidden;
  background-color: #e9e0d5;
  border: 1px solid #e9e0d5;
}

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

.hero-index {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 12px;
}

.hero-subtitle {
  font-size: 16px;
  color: #5a6b7a;
  margin-bottom: 24px;
  max-width: 480px;
}

.forum-index-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.index-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 14px;
  background-color: #f7f3ee;
  border-left: 3px solid #c05b3c;
  border-radius: 4px;
  transition: background-color 0.2s ease;
}

.index-item:hover {
  background-color: #fdf0e8;
}

.index-name {
  font-size: 15px;
  font-weight: 600;
  color: #2c3e50;
  flex-shrink: 0;
  min-width: 72px;
}

.index-desc {
  font-size: 14px;
  color: #5a6b7a;
  line-height: 1.6;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 28px;
  background-color: #c05b3c;
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  border-radius: 6px;
  align-self: flex-start;
  transition: background-color 0.2s ease;
}

.cta-button:hover {
  background-color: #a3482e;
  color: #ffffff;
}

.home-main-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr 0.9fr;
  gap: 32px;
  padding-top: 40px;
  padding-bottom: 40px;
}

.editor-pick {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 24px;
  align-self: start;
}

.editor-pick h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid #c05b3c;
}

.pick-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  line-height: 1.5;
}

.pick-card p {
  font-size: 15px;
  color: #5a6b7a;
  line-height: 1.7;
  margin-bottom: 14px;
}

.pick-card a {
  font-size: 14px;
  font-weight: 500;
}

.latest-topics {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 24px;
}

.latest-topics h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid #c05b3c;
}

.topic-list .topic-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.topic-no {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 14px;
  color: #b8ac9e;
  padding-top: 4px;
  flex-shrink: 0;
  width: 28px;
  text-align: right;
}

.topic-body {
  flex: 1;
}

.topic-body h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 4px;
}

.topic-body h3 a {
  color: #2c3e50;
}

.topic-body h3 a:hover {
  color: #c05b3c;
}

.topic-body .topic-excerpt {
  font-size: 14px;
  color: #6b7a8a;
  margin-bottom: 6px;
  line-height: 1.6;
}

.reading-guide {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 24px;
  align-self: start;
}

.reading-guide h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid #c05b3c;
}

.guide-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.guide-list li {
  padding-bottom: 14px;
  border-bottom: 1px solid #e9e0d5;
}

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

.guide-list h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.guide-list p {
  font-size: 14px;
  color: #5a6b7a;
  line-height: 1.7;
  margin-bottom: 8px;
}

.guide-list a {
  font-size: 14px;
  font-weight: 500;
}

.update-strip {
  padding-top: 32px;
  padding-bottom: 32px;
}

.strip-title {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid #c05b3c;
  display: inline-block;
}

.strip-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.strip-item {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 20px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  transition: box-shadow 0.2s ease;
}

.strip-item:hover {
  box-shadow: 0 2px 8px rgba(44, 62, 80, 0.08);
}

.strip-no {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 20px;
  font-weight: 700;
  color: #c05b3c;
  flex-shrink: 0;
  line-height: 1.4;
}

.strip-item h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.5;
}

.strip-item p {
  font-size: 14px;
  color: #5a6b7a;
  line-height: 1.6;
}

.strip-link {
  display: inline-block;
  font-size: 15px;
  font-weight: 500;
}

.board-overview {
  padding-top: 32px;
  padding-bottom: 32px;
}

.board-overview h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid #c05b3c;
  display: inline-block;
}

.table-wrapper {
  overflow-x: auto;
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
}

.board-table {
  min-width: 640px;
}

.board-table th {
  background-color: #f7f3ee;
  font-size: 14px;
  font-weight: 600;
  color: #2c3e50;
  text-align: left;
  padding: 14px 16px;
  border-bottom: 2px solid #c05b3c;
}

.board-table td {
  padding: 14px 16px;
  font-size: 14px;
  color: #3d4f5f;
  border-bottom: 1px solid #e9e0d5;
  line-height: 1.6;
}

.board-table tr:last-child td {
  border-bottom: none;
}

.overview-figure {
  margin-top: 20px;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid #e9e0d5;
}

.overview-figure img {
  width: 100%;
  height: auto;
}

.join-banner {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 32px;
  margin-top: 16px;
  margin-bottom: 16px;
  text-align: center;
}

.join-banner h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 10px;
}

.join-banner p {
  font-size: 15px;
  color: #5a6b7a;
  max-width: 560px;
  margin: 0 auto 20px;
  line-height: 1.7;
}

.join-links {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.join-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 24px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 500;
  border: 1px solid #c05b3c;
}

.join-links a:first-child {
  background-color: #c05b3c;
  color: #ffffff;
}

.join-links a:first-child:hover {
  background-color: #a3482e;
}

.join-links a:last-child {
  color: #c05b3c;
}

.join-links a:last-child:hover {
  background-color: #fdf0e8;
}

/* ============================================================
   pages / inner pages shared
   ============================================================ */
.inner-main {
  padding-bottom: 40px;
}

.page-layout {
  padding-top: 24px;
  padding-bottom: 24px;
}

.layout-with-aside {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
  align-items: start;
}

.layout-shell {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
  align-items: start;
}

.layout-shell.sidebar-left {
  grid-template-columns: 300px 1fr;
}

.sidebar-left .page-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 32px;
  align-items: start;
}

.page-layout .topic-list {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 24px;
}

.topic-list .section-title {
  margin-bottom: 8px;
}

/* aside help */
.aside-help {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 24px;
}

.aside-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid #e9e0d5;
}

.aside-desc {
  font-size: 14px;
  color: #5a6b7a;
  line-height: 1.7;
  margin-bottom: 16px;
}

.check-list {
  margin-bottom: 24px;
}

.check-list li {
  font-size: 14px;
  color: #3d4f5f;
  padding: 6px 0 6px 20px;
  position: relative;
  line-height: 1.6;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background-color: #c05b3c;
}

.related-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.related-links a {
  display: block;
  padding: 8px 10px;
  font-size: 14px;
  color: #2c3e50;
  border-radius: 4px;
  line-height: 1.6;
}

.related-links a:hover {
  background-color: #f7f3ee;
  color: #c05b3c;
}

/* step guide (cuowu aside) */
.step-guide {
  padding: 14px 0;
  border-bottom: 1px solid #e9e0d5;
}

.step-guide:last-of-type {
  border-bottom: none;
}

.step-guide-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
}

.step-guide-text {
  font-size: 14px;
  color: #5a6b7a;
  line-height: 1.7;
}

.aside-related {
  margin-top: 16px;
}

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

.aside-related-list li {
  margin-bottom: 6px;
}

.aside-related-list a {
  font-size: 14px;
  color: #c05b3c;
  line-height: 1.6;
}

.aside-related-list a:hover {
  text-decoration: underline;
}

/* ============================================================
   pages / rumen
   ============================================================ */
.content-block {
  padding-top: 28px;
  padding-bottom: 28px;
}

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

.check-card {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 20px;
}

.check-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.check-card p {
  font-size: 14px;
  color: #5a6b7a;
  line-height: 1.7;
}

.steps-wrapper {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.step-item {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 20px;
}

.step-item h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: #2c3e50;
}

.step-item p {
  font-size: 14px;
  color: #5a6b7a;
  line-height: 1.7;
}

.media-figure {
  margin-top: 16px;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid #e9e0d5;
  max-width: 720px;
}

.media-figure img {
  width: 100%;
  height: auto;
}

.media-figure figcaption {
  font-size: 13px;
  color: #8a7a6a;
  padding: 10px 14px;
  background-color: #f7f3ee;
  line-height: 1.6;
}

.filter-note {
  padding-top: 12px;
  padding-bottom: 12px;
}

.filter-note h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 10px;
}

.filter-note p {
  font-size: 15px;
  color: #5a6b7a;
  margin-bottom: 14px;
  line-height: 1.7;
}

.filter-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.filter-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 8px 20px;
  border: 1px solid #c05b3c;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  color: #c05b3c;
}

.filter-links a:hover {
  background-color: #fdf0e8;
}

/* ============================================================
   pages / renwu
   ============================================================ */
.task-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  align-items: start;
}

.task-catalog {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 24px;
}

.task-catalog h2 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid #e9e0d5;
}

.task-catalog ul li {
  margin-bottom: 4px;
}

.task-catalog ul a {
  display: block;
  padding: 8px 10px;
  font-size: 14px;
  color: #2c3e50;
  border-radius: 4px;
  line-height: 1.6;
}

.task-catalog ul a:hover {
  background-color: #f7f3ee;
  color: #c05b3c;
}

.catalog-tip {
  font-size: 13px;
  color: #8a7a6a;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid #e9e0d5;
  line-height: 1.6;
}

.catalog-tip a {
  color: #c05b3c;
}

.task-cards {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.task-card {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 24px;
}

.task-card h3 {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 12px;
}

.task-goal {
  font-size: 14px;
  color: #3d4f5f;
  margin-bottom: 12px;
  line-height: 1.7;
}

.task-goal strong {
  color: #2c3e50;
}

.task-steps {
  padding-left: 20px;
  margin-bottom: 12px;
}

.task-steps li {
  font-size: 14px;
  color: #3d4f5f;
  line-height: 1.7;
  list-style: decimal;
  padding: 2px 0;
}

.task-result {
  font-size: 14px;
  color: #3d4f5f;
  margin-bottom: 12px;
  line-height: 1.7;
}

.task-result strong {
  color: #2e7d4f;
}

.task-status {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  padding: 2px 10px;
  border-radius: 4px;
  line-height: 1.6;
}

.task-result-confirm {
  padding-top: 24px;
  padding-bottom: 24px;
}

.task-result-confirm h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 12px;
}

.task-result-confirm p {
  font-size: 15px;
  color: #5a6b7a;
  line-height: 1.7;
  margin-bottom: 10px;
  max-width: 760px;
}

.task-result-confirm a {
  font-weight: 500;
}

/* ============================================================
   pages / cuowu
   ============================================================ */
body.page-cuowu .sidebar-left {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 32px;
  align-items: start;
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

body.page-cuowu .sidebar-left > .aside-help {
  grid-column: 1;
  grid-row: 1;
}

body.page-cuowu .sidebar-left > .site-main {
  grid-column: 2;
  grid-row: 1;
  min-width: 0;
}

body.page-cuowu .sidebar-left .breadcrumb,
body.page-cuowu .sidebar-left .page-header {
  padding-left: 0;
  padding-right: 0;
}

body.page-cuowu .sidebar-left .inner-main {
  padding-bottom: 0;
}

.error-list-section {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 24px;
}

.error-item {
  padding: 20px 0;
  border-bottom: 1px solid #e9e0d5;
}

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

.error-item-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.error-title {
  font-size: 17px;
  font-weight: 600;
}

.error-desc {
  font-size: 14px;
  color: #5a6b7a;
  line-height: 1.7;
  margin-bottom: 10px;
}

.cause-list {
  margin-bottom: 10px;
}

.cause-list li {
  font-size: 14px;
  color: #3d4f5f;
  padding: 3px 0 3px 18px;
  position: relative;
  line-height: 1.6;
}

.cause-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #c05b3c;
}

.error-action a {
  font-size: 14px;
  font-weight: 500;
}

.cause-check-section {
  padding-top: 28px;
  padding-bottom: 28px;
}

.cause-table {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  overflow: hidden;
}

.cause-table th {
  background-color: #f7f3ee;
  font-size: 14px;
  font-weight: 600;
  text-align: left;
  padding: 12px 14px;
  border-bottom: 2px solid #c05b3c;
}

.cause-table td {
  padding: 12px 14px;
  font-size: 14px;
  color: #3d4f5f;
  border-bottom: 1px solid #e9e0d5;
  line-height: 1.6;
}

.cause-table tr:last-child td {
  border-bottom: none;
}

.process-section {
  padding-top: 28px;
  padding-bottom: 28px;
}

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

.process-item {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 20px;
}

.process-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.process-text {
  font-size: 14px;
  color: #5a6b7a;
  line-height: 1.7;
}

.filter-section {
  padding-top: 28px;
  padding-bottom: 28px;
}

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

.filter-item {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 16px;
}

.filter-item .status-tag {
  margin-bottom: 8px;
}

.filter-text {
  font-size: 14px;
  color: #5a6b7a;
  line-height: 1.7;
}

/* ============================================================
   pages / jinjie
   ============================================================ */
.topic-catalog {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 24px;
}

.topic-catalog h2 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid #e9e0d5;
}

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

.catalog-list a {
  display: block;
  padding: 8px 10px;
  font-size: 14px;
  color: #2c3e50;
  border-radius: 4px;
  line-height: 1.6;
}

.catalog-list a:hover {
  background-color: #f7f3ee;
  color: #c05b3c;
}

.topic-list .topic-section {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 24px;
  margin-bottom: 20px;
}

.topic-section h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid #c05b3c;
}

.topic-items {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.topic-items .topic-item {
  padding: 16px 0;
}

.topic-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.topic-card .topic-title {
  font-size: 17px;
}

.topic-summary {
  font-size: 14px;
  color: #5a6b7a;
  line-height: 1.7;
}

.topic-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.topic-step {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 13px;
  color: #8a7a6a;
  background-color: #f7f3ee;
  padding: 2px 8px;
  border-radius: 4px;
}

.tag-resolved {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  padding: 2px 10px;
  border-radius: 4px;
  line-height: 1.6;
  background-color: #eaf4ec;
  color: #2e7d4f;
  border: 1px solid #c4dfcc;
}

.tag-pending {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  padding: 2px 10px;
  border-radius: 4px;
  line-height: 1.6;
  background-color: #f0f2f5;
  color: #6b7a8a;
  border: 1px solid #d8dee4;
}

.tag-featured {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  padding: 2px 10px;
  border-radius: 4px;
  line-height: 1.6;
  background-color: #fdf0e8;
  color: #c05b3c;
  border: 1px solid #e8c4b4;
}

.experience-discussion {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 24px;
  margin-bottom: 20px;
}

.experience-discussion h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid #c05b3c;
}

.discussion-block {
  padding: 16px 0;
  border-bottom: 1px solid #e9e0d5;
}

.discussion-block:last-child {
  border-bottom: none;
}

.discussion-block h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.discussion-block p {
  font-size: 14px;
  color: #5a6b7a;
  line-height: 1.7;
}

.suggestion-banner {
  background-color: #c05b3c;
  color: #ffffff;
  border-radius: 6px;
  padding: 28px 32px;
  margin-top: 24px;
  margin-bottom: 24px;
}

.suggestion-banner h2 {
  font-size: 20px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 8px;
}

.suggestion-banner p {
  font-size: 15px;
  color: #fdf0e8;
  line-height: 1.7;
  max-width: 720px;
}

.related-boards {
  padding-top: 16px;
  padding-bottom: 16px;
}

.related-boards h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 12px;
}

.related-boards p {
  font-size: 15px;
  color: #5a6b7a;
  margin-bottom: 12px;
  line-height: 1.7;
}

.related-boards ul {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.related-boards ul a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 8px 20px;
  border: 1px solid #c05b3c;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  color: #c05b3c;
}

.related-boards ul a:hover {
  background-color: #fdf0e8;
}

/* ============================================================
   pages / banben
   ============================================================ */
.update-timeline {
  padding-top: 24px;
  padding-bottom: 24px;
}

.update-timeline h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid #c05b3c;
  display: inline-block;
}

.timeline-figure {
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid #e9e0d5;
  margin-bottom: 24px;
}

.timeline-hero-img {
  width: 100%;
  height: auto;
}

.timeline-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline-item {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid #e9e0d5;
  transition: background-color 0.2s ease;
}

.timeline-item:hover {
  background-color: rgba(255, 255, 255, 0.6);
}

.timeline-index {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 20px;
  font-weight: 700;
  color: #c05b3c;
  flex-shrink: 0;
  line-height: 1.4;
}

.timeline-body {
  flex: 1;
}

.timeline-body h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}

.timeline-body p {
  font-size: 14px;
  color: #5a6b7a;
  line-height: 1.7;
}

.new-content {
  padding-top: 24px;
  padding-bottom: 24px;
}

.new-content h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 2px solid #c05b3c;
  display: inline-block;
}

.new-content > p {
  font-size: 15px;
  color: #5a6b7a;
  margin-bottom: 20px;
  line-height: 1.7;
  max-width: 760px;
}

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

.new-content-card {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 20px;
}

.new-content-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.new-content-card p {
  font-size: 14px;
  color: #5a6b7a;
  line-height: 1.7;
  margin-bottom: 12px;
}

.new-content-card a {
  font-size: 14px;
  font-weight: 500;
}

/* ============================================================
   pages / guize
   ============================================================ */
.rules-figure {
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid #e9e0d5;
  margin-top: 8px;
  margin-bottom: 24px;
  max-width: 720px;
}

.rules-figure img {
  width: 100%;
  height: auto;
}

.rules-figure figcaption {
  font-size: 13px;
  color: #8a7a6a;
  padding: 10px 14px;
  background-color: #f7f3ee;
  line-height: 1.6;
}

.core-rules {
  padding-top: 16px;
  padding-bottom: 24px;
}

.core-rules h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid #c05b3c;
  display: inline-block;
}

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

.rule-card {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 20px;
  border-top: 3px solid #c05b3c;
}

.rule-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.rule-card p {
  font-size: 14px;
  color: #5a6b7a;
  line-height: 1.7;
}

.rule-groups {
  padding-top: 24px;
  padding-bottom: 24px;
}

.rule-groups h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid #c05b3c;
  display: inline-block;
}

.rule-group {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 24px;
  margin-bottom: 16px;
}

.rule-group h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
  color: #c05b3c;
}

.rule-group ul li {
  font-size: 14px;
  color: #3d4f5f;
  padding: 6px 0 6px 20px;
  position: relative;
  line-height: 1.7;
}

.rule-group ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #c05b3c;
}

/* ============================================================
   pages / fankui
   ============================================================ */
.help-categories {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 24px;
}

.help-categories h2 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid #e9e0d5;
}

.category-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.category-list a {
  display: flex;
  flex-direction: column;
  padding: 10px 12px;
  border-radius: 4px;
  background-color: #f7f3ee;
  transition: background-color 0.2s ease;
}

.category-list a:hover {
  background-color: #fdf0e8;
}

.category-list strong {
  font-size: 15px;
  font-weight: 600;
  color: #2c3e50;
}

.category-list span {
  font-size: 13px;
  color: #6b7a8a;
  line-height: 1.5;
}

.help-categories img {
  width: 100%;
  height: auto;
  border-radius: 6px;
  border: 1px solid #e9e0d5;
}

.faq-list {
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 24px;
}

.faq-list h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid #c05b3c;
}

.faq-item {
  border-bottom: 1px solid #e9e0d5;
}

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

.faq-item summary {
  font-size: 15px;
  font-weight: 500;
  color: #2c3e50;
  padding: 14px 0;
  line-height: 1.6;
  list-style: none;
  position: relative;
  padding-right: 32px;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: #c05b3c;
  font-weight: 400;
}

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

.faq-item summary:hover {
  color: #c05b3c;
}

.faq-item p {
  font-size: 14px;
  color: #5a6b7a;
  line-height: 1.7;
  padding: 0 0 14px;
}

.faq-item p a {
  font-weight: 500;
}

.feedback-process {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid #e9e0d5;
}

.feedback-process h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 14px;
}

.process-steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 16px;
}

.process-steps li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 14px;
  color: #3d4f5f;
  line-height: 1.7;
}

.step-number {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 14px;
  font-weight: 700;
  color: #c05b3c;
  background-color: #fdf0e8;
  border-radius: 50%;
  width: 26px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.feedback-process p {
  font-size: 14px;
  color: #5a6b7a;
  line-height: 1.7;
}

.feedback-process p a {
  font-weight: 500;
}

/* ============================================================
   pages / 404
   ============================================================ */
.error-main {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 24px;
  min-height: 60vh;
}

.error-panel {
  text-align: center;
  max-width: 560px;
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  padding: 48px 40px;
  margin-bottom: 32px;
}

.error-code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 64px;
  font-weight: 700;
  color: #c05b3c;
  line-height: 1.2;
  margin-bottom: 12px;
}

.error-panel h1 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 15px;
  color: #5a6b7a;
  line-height: 1.7;
  margin-bottom: 24px;
}

.error-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.error-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 24px;
  background-color: #c05b3c;
  color: #ffffff;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 500;
}

.error-btn:hover {
  background-color: #a3482e;
  color: #ffffff;
}

.error-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 24px;
  border: 1px solid #c05b3c;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 500;
  color: #c05b3c;
}

.error-link:hover {
  background-color: #fdf0e8;
}

.error-guide {
  max-width: 560px;
  text-align: center;
}

.error-guide h2 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 14px;
}

.error-guide ul {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.error-guide ul a {
  display: inline-block;
  padding: 8px 16px;
  font-size: 14px;
  color: #2c3e50;
  background-color: #ffffff;
  border: 1px solid #e9e0d5;
  border-radius: 6px;
  line-height: 1.6;
}

.error-guide ul a:hover {
  border-color: #c05b3c;
  color: #c05b3c;
}

/* ============================================================
   responsive / 1024
   ============================================================ */
@media (max-width: 1024px) {
  .hero-layout {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .home-main-grid {
    grid-template-columns: 1fr 1.2fr;
    gap: 20px;
  }

  .reading-guide {
    grid-column: 1 / -1;
  }

  .footer-shell {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .layout-with-aside {
    grid-template-columns: 1fr 260px;
    gap: 24px;
  }

  .layout-shell {
    grid-template-columns: 1fr 260px;
    gap: 24px;
  }

  .layout-shell.sidebar-left {
    grid-template-columns: 260px 1fr;
    gap: 24px;
  }

  body.page-cuowu .sidebar-left {
    grid-template-columns: 260px 1fr;
    gap: 24px;
  }

  .task-layout {
    grid-template-columns: 240px 1fr;
    gap: 24px;
  }

  .check-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }

  .steps-wrapper {
    gap: 12px;
  }

  .process-list {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }

  .filter-guide {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }

  .new-content-grid {
    gap: 12px;
  }

  .rule-cards {
    gap: 12px;
  }
}

/* ============================================================
   responsive / 768
   ============================================================ */
@media (max-width: 768px) {
  .header-shell {
    flex-wrap: wrap;
    min-height: 56px;
    padding-top: 6px;
    padding-bottom: 6px;
  }

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

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

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0;
    border-top: 1px solid #e9e0d5;
    margin-top: 8px;
  }

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

  .nav-list li {
    border-bottom: 1px solid #f0ece6;
  }

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

  .nav-list a {
    padding: 12px 8px;
    font-size: 15px;
    white-space: normal;
    border-radius: 0;
  }

  .hero-layout {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-top: 28px;
    padding-bottom: 28px;
  }

  .hero-figure {
    min-height: 220px;
  }

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

  .home-main-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    padding-top: 28px;
    padding-bottom: 28px;
  }

  .reading-guide {
    grid-column: auto;
  }

  .strip-list {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .join-banner {
    padding: 24px 20px;
  }

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

  .tab-switch {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
  }

  .tab-btn,
  .tab-item {
    flex-shrink: 0;
  }

  .layout-with-aside {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .layout-shell {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .layout-shell.sidebar-left {
    grid-template-columns: 1fr;
  }

  .sidebar-left .page-layout {
    grid-template-columns: 1fr;
  }

  body.page-cuowu .sidebar-left {
    grid-template-columns: 1fr;
    padding-left: 24px;
    padding-right: 24px;
  }

  body.page-cuowu .sidebar-left > .aside-help {
    grid-column: 1;
    grid-row: auto;
    order: 2;
  }

  body.page-cuowu .sidebar-left > .site-main {
    grid-column: 1;
    grid-row: auto;
    order: 1;
  }

  .task-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .check-grid {
    grid-template-columns: 1fr;
  }

  .steps-wrapper {
    grid-template-columns: 1fr;
  }

  .process-list {
    grid-template-columns: 1fr;
  }

  .filter-guide {
    grid-template-columns: 1fr;
  }

  .new-content-grid {
    grid-template-columns: 1fr;
  }

  .rule-cards {
    grid-template-columns: 1fr;
  }

  .footer-shell {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    padding-top: 32px;
    padding-bottom: 24px;
  }

  .error-panel {
    padding: 32px 24px;
  }

  .error-code {
    font-size: 48px;
  }
}

/* ============================================================
   responsive / 480
   ============================================================ */
@media (max-width: 480px) {
  .header-shell,
  .footer-shell,
  .hero-layout,
  .main-grid,
  .update-strip,
  .board-overview,
  .join-banner,
  .page-layout,
  .tab-switch,
  .page-header,
  .breadcrumb,
  .content-block,
  .task-result-confirm,
  .filter-note,
  .cause-check-section,
  .process-section,
  .filter-section,
  .layout-shell,
  .suggestion-banner,
  .related-boards,
  .update-timeline,
  .new-content,
  .rule-groups,
  .core-rules,
  .rules-figure,
  .feedback-process {
    padding-left: 16px;
    padding-right: 16px;
  }

  .brand-link {
    font-size: 18px;
  }

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

  .hero-subtitle {
    font-size: 15px;
  }

  .index-item {
    flex-direction: column;
    gap: 2px;
    padding: 10px 12px;
  }

  .index-name {
    min-width: 0;
  }

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

  .page-description {
    font-size: 15px;
  }

  .topic-item {
    padding: 16px 0;
  }

  .topic-no {
    display: none;
  }

  .topic-body h3 {
    font-size: 16px;
  }

  .topic-excerpt {
    font-size: 14px;
  }

  .editor-pick,
  .latest-topics,
  .reading-guide,
  .topic-list .topic-section,
  .experience-discussion,
  .faq-list,
  .error-list-section,
  .task-card,
  .aside-help,
  .task-catalog,
  .topic-catalog,
  .help-categories,
  .rule-group,
  .check-card,
  .step-item,
  .process-item,
  .filter-item,
  .new-content-card,
  .rule-card {
    padding: 16px;
  }

  .error-item-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .footer-shell {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .join-links {
    flex-direction: column;
  }

  .join-links a {
    width: 100%;
  }

  .timeline-item {
    gap: 12px;
  }

  .timeline-index {
    font-size: 16px;
  }

  .timeline-body h3 {
    font-size: 16px;
  }

  .process-steps li {
    font-size: 14px;
  }

  .error-actions {
    flex-direction: column;
  }

  .error-btn,
  .error-link {
    width: 100%;
  }

  .related-boards ul {
    flex-direction: column;
  }

  .related-boards ul a {
    width: 100%;
  }

  .filter-links {
    flex-direction: column;
  }

  .filter-links a {
    width: 100%;
  }
}

/* 程序验收反馈：移动端正文优先 */
@media (max-width: 768px) {
  .site-main :is(.page-content, .main-content, .content-main) {
    order: 1;
  }

  .site-main :is(aside, .sidebar) {
    order: 2;
  }
}