/* ============================================================
   BASE
   ============================================================ */
:root {
  --color-bg: #f4f4f0;
  --color-text: #1f1f1f;
  --color-accent: #b45b3e;
  --color-border: #e5e2d9;
  --color-card: #ffffff;
  --color-muted: #6b6b66;
  --font-sans: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --container-width: 1160px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --shadow-card: 0 1px 3px rgba(31, 31, 31, 0.06);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  min-height: 100vh;
}

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

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

a:hover {
  color: #8f452e;
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-text);
}

h1 {
  font-size: 28px;
}

h2 {
  font-size: 20px;
}

h3 {
  font-size: 17px;
}

h4 {
  font-size: 15px;
}

p {
  font-size: 16px;
  line-height: 1.8;
}

/* ============================================================
   LAYOUT
   ============================================================ */

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

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

/* 顶部工具栏 */
.top-toolbar {
  background-color: #ecebe5;
  border-bottom: 1px solid var(--color-border);
}

.top-toolbar p {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 8px 24px;
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.6;
}

/* 页头 */
.site-header {
  background-color: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 24px;
}

.brand {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  white-space: nowrap;
  letter-spacing: 0.02em;
}

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

.site-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

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

.nav-list li a {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.nav-list li a:hover {
  background-color: #f0efea;
  color: var(--color-accent);
}

.nav-list li a.is-current {
  color: var(--color-accent);
  font-weight: 600;
  background-color: rgba(180, 91, 62, 0.08);
}

.header-feedback {
  display: inline-block;
  padding: 8px 18px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--color-accent);
  white-space: nowrap;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.header-feedback:hover {
  background-color: var(--color-accent);
  color: #fff;
}

/* 导航按钮 */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 10px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 24px;
  background-color: var(--color-text);
  border-radius: 1px;
}

/* 页脚 */
.site-footer {
  background-color: #2b2b28;
  color: #cfcfc9;
  margin-top: 60px;
}

.footer-columns {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.footer-col h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 16px;
  font-weight: 600;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  color: #b5b5ae;
  font-size: 14px;
}

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

.footer-copy {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  padding: 20px 24px;
  font-size: 13px;
  color: #9a9a93;
}

/* 面包屑 */
.breadcrumb {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 20px 24px 0;
  font-size: 14px;
  color: var(--color-muted);
}

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

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

.breadcrumb-sep {
  margin: 0 8px;
  color: #b8b5ad;
}

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

/* 页面标题区 */
.page-header {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 24px;
}

.page-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
}

.page-description {
  font-size: 16px;
  color: var(--color-muted);
  max-width: 720px;
  line-height: 1.8;
}

/* 内页主容器 */
.inner-main {
  width: 100%;
}

.inner-main .section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  margin-bottom: 48px;
}

.section-title {
  font-size: 20px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

/* 首页主容器 */
.home-main {
  width: 100%;
}

/* ============================================================
   COMPONENTS
   ============================================================ */

/* 首屏焦点区 */
.hero-focus {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 56px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-copy h1 {
  font-size: 32px;
  line-height: 1.45;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 16px;
  color: var(--color-muted);
  margin-bottom: 28px;
  max-width: 460px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 12px 28px;
  font-size: 15px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  min-height: 44px;
  line-height: 1.4;
}

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

.btn-primary:hover {
  background-color: #8f452e;
  color: #fff;
}

.btn-secondary {
  border: 1px solid var(--color-border);
  background-color: transparent;
  color: var(--color-text);
}

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

.hero-media {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.hero-media img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

/* 版块画廊 */
.gallery-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
}

.gallery-section h2 {
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.gallery-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.gallery-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 4px 12px rgba(31, 31, 31, 0.08);
}

.gallery-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.gallery-card h3 {
  padding: 16px 16px 6px;
  font-size: 16px;
}

.gallery-card p {
  padding: 0 16px;
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
  min-height: 48px;
}

.gallery-card a {
  display: inline-block;
  margin: 8px 16px 16px;
  font-size: 14px;
  font-weight: 600;
}

/* 首页双栏：热门话题 + 公告 */
.home-columns {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 40px;
  align-items: start;
}

.hot-topics h2,
.home-announce h2 {
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.topic-timeline {
  counter-reset: topic-counter;
}

.topic-timeline li {
  counter-increment: topic-counter;
  position: relative;
  padding: 16px 0 16px 52px;
  border-bottom: 1px solid var(--color-border);
}

.topic-timeline li::before {
  content: counter(topic-counter, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 16px;
  font-size: 20px;
  font-weight: 700;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}

.topic-timeline h3 {
  font-size: 16px;
  margin-bottom: 4px;
}

.topic-timeline h3 a {
  color: var(--color-text);
}

.topic-timeline h3 a:hover {
  color: var(--color-accent);
}

.topic-meta {
  font-size: 13px;
  color: var(--color-muted);
}

/* 公告侧栏 */
.home-announce {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.announce-list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.announce-status {
  display: inline-block;
  font-size: 12px;
  color: #4a7a4a;
  background-color: rgba(74, 122, 74, 0.1);
  padding: 2px 10px;
  border-radius: 20px;
  margin-bottom: 6px;
}

.announce-list p {
  font-size: 14px;
  line-height: 1.7;
}

/* 新手指南步骤条 */
.guide-steps {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
}

.guide-steps h2 {
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.steps-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.step-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  position: relative;
}

.step-num {
  display: inline-block;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  text-align: center;
  line-height: 36px;
  margin-bottom: 16px;
}

.step-item h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.step-item p {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 12px;
}

.step-item a {
  font-size: 14px;
  font-weight: 600;
}

/* 社区公约摘要 */
.rules-summary {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 48px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 32px;
}

.rules-summary h2 {
  margin-bottom: 12px;
}

.rules-summary p {
  font-size: 15px;
  color: var(--color-muted);
  margin-bottom: 12px;
}

.text-link {
  font-size: 15px;
  font-weight: 600;
}

/* ============================================================
   内页组件
   ============================================================ */

/* 语义表格 */
.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-card);
}

.board-table,
.feedback-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  min-width: 640px;
}

.board-table th,
.board-table td,
.feedback-table th,
.feedback-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

.board-table thead th,
.feedback-table thead th {
  background-color: #efeee9;
  font-weight: 600;
  font-size: 14px;
  white-space: nowrap;
}

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

.board-table tbody tr:hover td,
.feedback-table tbody tr:hover td {
  background-color: #faf9f6;
}

/* 状态标签 */
.status-badge {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
}

.status-info {
  background-color: rgba(74, 122, 74, 0.12);
  color: #3d6b3d;
}

.status-open {
  background-color: rgba(107, 107, 102, 0.12);
  color: var(--color-muted);
}

/* 版块卡片 */
.board-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.board-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.25s ease;
}

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

.board-card-img {
  width: 100%;
  height: 120px;
  object-fit: cover;
}

.board-card h3 {
  padding: 14px 16px 4px;
  font-size: 16px;
}

.board-card p {
  padding: 0 16px 16px;
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
}

/* 新手提示条 */
.newcomer-tip {
  background-color: #ecebe5;
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 20px 24px;
  margin: 0 24px 48px;
  max-width: var(--container-width);
}

.newcomer-tip p {
  font-size: 15px;
}

.newcomer-tip a {
  font-weight: 600;
}

/* 话题标签 */
.topic-tags {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 32px;
}

.topic-tags h2 {
  margin-bottom: 16px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.tag {
  display: inline-block;
  padding: 6px 16px;
  font-size: 14px;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  color: var(--color-text);
  background-color: var(--color-card);
  cursor: default;
}

a.tag {
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

.tag-current {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

.tag-small {
  font-size: 12px;
  padding: 2px 10px;
}

/* 内容媒体 */
.content-media {
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 24px;
}

.content-media img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.content-media figcaption {
  font-size: 13px;
  color: var(--color-muted);
  padding: 10px 14px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.content-media-inline {
  float: none;
  margin-bottom: 24px;
}

/* 话题列表 */
.topic-list {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 40px;
}

.topic-list h2 {
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.topic-items {
  border-top: 1px solid var(--color-border);
}

.topic-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
}

.topic-item h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.topic-item h3 a {
  color: var(--color-text);
}

.topic-item h3 a:hover {
  color: var(--color-accent);
}

.topic-item p {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 8px;
  line-height: 1.7;
}

.topic-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--color-muted);
}

/* 内容边界 */
.content-boundary {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 28px 24px 40px;
}

.content-boundary h2 {
  margin-bottom: 12px;
}

.content-boundary p {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 8px;
  max-width: 760px;
}

/* 相关链接 */
.related-links {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 40px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.related-links-label {
  font-size: 14px;
  color: var(--color-muted);
}

.related-links-item {
  font-size: 14px;
  font-weight: 600;
}

/* 经验分享页两栏 */
.layout-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 48px;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

.content-primary {
  min-width: 0;
}

.content-sidebar {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.content-sidebar h2 {
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

/* 精华分享 */
.featured-posts {
  margin-bottom: 40px;
}

.featured-posts h2,
.latest-posts h2 {
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.featured-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.featured-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.featured-media {
  width: 100%;
  height: 140px;
  background-color: #e8e7e1;
}

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

.featured-body {
  padding: 16px 18px 18px;
}

.featured-body h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.featured-body h3 a {
  color: var(--color-text);
}

.featured-body h3 a:hover {
  color: var(--color-accent);
}

.featured-body p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 10px;
}

.featured-body .tag {
  font-size: 12px;
  padding: 2px 10px;
}

/* 最新分享列表 */
.post-list {
  border-top: 1px solid var(--color-border);
}

.post-item {
  padding: 18px 0;
  border-bottom: 1px solid var(--color-border);
}

.post-item h3 {
  font-size: 16px;
  margin-bottom: 4px;
}

.post-item h3 a {
  color: var(--color-text);
}

.post-item h3 a:hover {
  color: var(--color-accent);
}

.post-item p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 6px;
}

.post-meta {
  font-size: 13px;
  color: var(--color-muted);
}

.post-meta .tag {
  font-size: 12px;
  padding: 2px 10px;
  margin-right: 6px;
}

/* 标签云 */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.tag-link {
  display: inline-block;
  padding: 6px 14px;
  font-size: 13px;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  color: var(--color-text);
  background-color: var(--color-card);
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

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

/* 状态标签 */
.status {
  display: inline-block;
  font-size: 13px;
  padding: 2px 10px;
  border-radius: 20px;
  background-color: rgba(74, 122, 74, 0.12);
  color: #3d6b3d;
}

/* ============================================================
   求助问答页
   ============================================================ */

.help-layout {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 48px;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

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

.help-sidebar {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.help-sidebar h3 {
  font-size: 16px;
  margin-bottom: 10px;
}

.help-sidebar p {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 12px;
  line-height: 1.7;
}

.sidebar-link {
  font-size: 14px;
  font-weight: 600;
}

.sidebar-block {
  margin-bottom: 24px;
}

.sidebar-block:last-child {
  margin-bottom: 0;
}

.help-media {
  margin-bottom: 24px;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.help-media img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.help-media figcaption {
  font-size: 13px;
  color: var(--color-muted);
  padding: 8px 12px;
  background-color: #f0efea;
  text-align: center;
}

/* FAQ */
.faq-section {
  margin-bottom: 40px;
}

.faq-section h2 {
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

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

.faq-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.faq-item summary {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 44px;
}

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

.faq-item summary::after {
  content: '+';
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--color-accent);
  font-weight: 400;
}

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

.faq-item summary:hover {
  background-color: #faf9f6;
}

.faq-item p {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.8;
}

/* 状态筛选 */
.status-filter {
  margin-bottom: 40px;
}

.status-filter h2 {
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.status-tags {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
}

.status-tag {
  display: inline-block;
  padding: 6px 16px;
  font-size: 14px;
  border-radius: 20px;
}

.status-resolved {
  background-color: rgba(74, 122, 74, 0.12);
  color: #3d6b3d;
}

.status-pending {
  background-color: rgba(180, 91, 62, 0.1);
  color: var(--color-accent);
}

.status-tip {
  font-size: 13px;
  color: var(--color-muted);
}

/* 求助列表 */
.help-list-section h2 {
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

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

.help-item {
  padding: 18px 0;
  border-bottom: 1px solid var(--color-border);
}

.help-item-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
}

.help-item-title {
  font-size: 16px;
  font-weight: 600;
}

.help-item-title a {
  color: var(--color-text);
}

.help-item-title a:hover {
  color: var(--color-accent);
}

.help-item-meta {
  font-size: 13px;
  color: var(--color-muted);
  margin-bottom: 4px;
}

.help-item-desc {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
}

/* 发帖引导 */
.post-guide {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 48px;
  background-color: #ecebe5;
  border-radius: var(--radius-md);
}

.post-guide h2 {
  margin-bottom: 12px;
}

.post-guide p {
  font-size: 15px;
  color: var(--color-muted);
  margin-bottom: 8px;
}

.post-guide a {
  font-weight: 600;
  margin-right: 16px;
  font-size: 15px;
}

/* ============================================================
   新手指南页
   ============================================================ */

.guide-steps h2 {
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.step-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
}

.step-number {
  display: inline-block;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  text-align: center;
  line-height: 36px;
  margin-bottom: 16px;
}

.step-card h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.step-card p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
}

.step-card p a {
  font-weight: 600;
}

/* 版块建议 */
.board-suggestions {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 48px;
}

.board-suggestions h2 {
  margin-bottom: 8px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.section-desc {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 20px;
}

.suggestion-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.suggestion-card {
  display: block;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: border-color 0.25s ease;
}

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

.suggestion-card h3 {
  font-size: 16px;
  margin-bottom: 6px;
  color: var(--color-text);
}

.suggestion-card p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
}

/* 发帖规范 */
.posting-rules {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 48px;
}

.posting-rules h2 {
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

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

.rule-item {
  background-color: var(--color-card);
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 16px 20px;
}

.rule-item h3 {
  font-size: 15px;
  margin-bottom: 4px;
}

.rule-item p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
}

/* FAQ入口 */
.faq-entry {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 48px;
  background-color: #ecebe5;
  border-radius: var(--radius-md);
  padding: 32px;
}

.faq-entry h2 {
  margin-bottom: 8px;
}

.faq-entry p {
  font-size: 15px;
  color: var(--color-muted);
}

.faq-entry a {
  font-weight: 600;
}

/* ============================================================
   社区公约页
   ============================================================ */

.rules-figure {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 32px;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.rules-figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.rules-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 40px;
}

.rules-section h2 {
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.rules-section .section-desc {
  margin-bottom: 16px;
}

.rules-section ol.rules-list {
  list-style: decimal;
  padding-left: 20px;
  display: block;
}

.rules-section ol.rules-list li {
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 10px;
  color: var(--color-text);
}

.rules-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.rules-col {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.rules-col h3 {
  font-size: 16px;
  margin-bottom: 12px;
}

.rules-col ul {
  list-style: disc;
  padding-left: 18px;
}

.rules-col ul li {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: 8px;
}

.steps-list {
  list-style: decimal;
  padding-left: 20px;
}

.steps-list li {
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 10px;
}

.entry-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.entry-link {
  font-size: 15px;
  font-weight: 600;
}

/* ============================================================
   意见反馈页
   ============================================================ */

.feedback-types,
.feedback-process,
.related-links {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 48px;
}

.module-intro {
  font-size: 15px;
  color: var(--color-muted);
  margin-bottom: 20px;
  max-width: 720px;
}

.table-note {
  font-size: 13px;
  color: var(--color-muted);
  margin-top: 12px;
}

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

.feedback-process ol.process-steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  counter-reset: process-counter;
}

.process-steps li {
  counter-increment: process-counter;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  position: relative;
}

.process-steps li::before {
  content: counter(process-counter, decimal-leading-zero);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-accent);
  display: block;
  margin-bottom: 12px;
}

.process-steps h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.process-steps p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
}

.process-note {
  font-size: 13px;
  color: var(--color-muted);
  margin-top: 16px;
}

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

.related-link-list li {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
}

.related-link-list a {
  font-size: 15px;
  font-weight: 600;
  display: block;
  margin-bottom: 4px;
}

.link-desc {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
}

.feedback-media {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 48px;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.feedback-media img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.feedback-media figcaption {
  font-size: 13px;
  color: var(--color-muted);
  padding: 8px 12px;
  text-align: center;
}

/* ============================================================
   404 页
   ============================================================ */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 48px 24px;
}

.error-content {
  text-align: center;
  max-width: 520px;
}

.error-code {
  font-size: 72px;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 16px;
}

.error-content h1 {
  font-size: 24px;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 16px;
  color: var(--color-muted);
  margin-bottom: 12px;
}

.error-suggest {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 24px;
}

.error-back {
  display: inline-block;
  padding: 12px 28px;
  background-color: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  min-height: 44px;
  line-height: 1.4;
}

.error-back:hover {
  background-color: #8f452e;
  color: #fff;
}

/* ============================================================
   辅助
   ============================================================ */

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

/* ============================================================
   响应式
   ============================================================ */

@media (max-width: 992px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .board-cards {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .layout-shell,
  .help-layout {
    grid-template-columns: 1fr;
  }

  .content-sidebar,
  .help-sidebar {
    order: 2;
  }

  .footer-columns {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .hero-focus {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-copy h1 {
    font-size: 28px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    min-height: 60px;
    padding: 8px 16px;
    gap: 8px;
  }

  .brand {
    font-size: 19px;
    margin-right: auto;
  }

  .nav-toggle {
    display: flex;
    order: 3;
  }

  .site-nav {
    flex-basis: 100%;
    order: 4;
    justify-content: flex-start;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    padding: 8px 0 12px;
    gap: 0;
  }

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

  .nav-list li {
    width: 100%;
  }

  .nav-list li a {
    display: block;
    padding: 12px 8px;
    font-size: 15px;
    width: 100%;
    border-radius: 0;
    border-bottom: 1px solid var(--color-border);
  }

  .header-feedback {
    order: 2;
    padding: 6px 14px;
    font-size: 13px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }

  .hero-focus {
    padding: 32px 16px 40px;
  }

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

  .gallery-section,
  .home-columns,
  .guide-steps,
  .rules-summary {
    padding-left: 16px;
    padding-right: 16px;
  }

  .home-columns {
    padding: 16px;
  }

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

  .step-card {
    padding: 20px;
  }

  .step-item {
    padding: 20px;
  }

  .breadcrumb {
    padding: 16px 16px 0;
  }

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

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

  .inner-main .section,
  .topic-tags,
  .topic-list,
  .content-boundary,
  .related-links,
  .layout-shell,
  .help-layout,
  .board-suggestions,
  .posting-rules,
  .faq-entry,
  .rules-section,
  .rules-figure,
  .feedback-types,
  .feedback-process,
  .related-links,
  .feedback-media {
    padding-left: 16px;
    padding-right: 16px;
  }

  .newcomer-tip {
    margin: 0 16px 40px;
    padding: 16px;
  }

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

  .feedback-process ol.process-steps {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 540px) {
  .gallery-grid,
  .board-cards,
  .suggestion-grid,
  .featured-grid {
    grid-template-columns: 1fr;
  }

  .footer-columns {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 36px 16px 24px;
  }

  .footer-copy {
    padding: 16px;
    font-size: 12px;
  }

  .hero-copy h1 {
    font-size: 24px;
  }

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

  .btn-primary,
  .btn-secondary {
    text-align: center;
  }

  .hero-media img {
    height: 200px;
  }

  .topic-timeline li {
    padding-left: 44px;
  }

  .topic-timeline li::before {
    font-size: 16px;
  }

  .gallery-card img {
    height: 180px;
  }

  .board-card-img {
    height: 160px;
  }

  .content-media img {
    height: 180px;
  }

  .rules-figure img {
    height: 160px;
  }

  .feedback-media img {
    height: 160px;
  }

  .help-media img {
    height: 140px;
  }

  .featured-media {
    height: 180px;
  }

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

  .post-guide {
    padding: 24px 16px;
    margin: 0 16px 40px;
  }

  .faq-entry {
    padding: 24px 20px;
    margin: 0 16px 40px;
  }

  .rules-summary {
    padding: 24px 20px;
    margin: 0 16px 40px;
  }

  .error-code {
    font-size: 56px;
  }
}