/* ==========================================================================
   糖心viog 论坛 · 全站样式表
   视觉方向：清晰编辑风 · 纯白底色 · 琥珀强调
   ========================================================================== */

/* --------------------------------------------------------------------------
   Base · 基础变量、重置与全局字体
   -------------------------------------------------------------------------- */
:root {
  --color-bg: #ffffff;
  --color-text: #292524;
  --color-text-secondary: #78716c;
  --color-accent: #b45309;
  --color-accent-dark: #92400e;
  --color-surface: #f5f5f4;
  --color-border: #e7e5e4;
  --color-footer-bg: #57534e;
  --color-footer-text: #e7e5e4;
  --color-white: #ffffff;
  --font-sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --container-wide: 1152px;
  --container-narrow: 720px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --header-height: 64px;
  --header-height-scrolled: 54px;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul,
ol {
  list-style: none;
}

.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 · 全站统一外壳：页头、导航、页脚、面包屑、页面标题区
   -------------------------------------------------------------------------- */

/* 页头 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 0.2s ease, min-height 0.2s ease;
  min-height: var(--header-height);
}

.site-header.is-scrolled {
  box-shadow: 0 2px 8px rgba(41, 37, 36, 0.06);
  min-height: var(--header-height-scrolled);
}

.header-inner {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: var(--header-height);
  transition: min-height 0.2s ease;
}

.site-header.is-scrolled .header-inner {
  min-height: var(--header-height-scrolled);
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.brand-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.01em;
}

.brand-slogan {
  font-size: 12px;
  color: var(--color-text-secondary);
  display: none;
}

/* 导航 */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  width: 44px;
  height: 44px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.nav-toggle-icon {
  display: block;
  position: relative;
  width: 20px;
  height: 2px;
  background-color: var(--color-text);
  transition: background-color 0.2s ease;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background-color: var(--color-text);
  transition: transform 0.2s ease, top 0.2s ease;
}

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

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

.nav-toggle[aria-expanded="true"] .nav-toggle-icon {
  background-color: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-list li a {
  display: block;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, color 0.2s ease;
}

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

.nav-list li a.is-current {
  color: var(--color-accent);
  font-weight: 600;
  background-color: rgba(180, 83, 9, 0.06);
}

.btn-post {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-white);
  background-color: var(--color-accent);
  border-radius: var(--radius-md);
  white-space: nowrap;
  transition: background-color 0.2s ease;
}

.btn-post:hover {
  background-color: var(--color-accent-dark);
  color: var(--color-white);
  text-decoration: none;
}

.btn-post.is-current {
  background-color: var(--color-accent-dark);
}

/* 主内容区 */
.site-main {
  min-height: 60vh;
}

.inner-main {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 24px 64px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 20px 0 0;
  font-size: 13px;
  color: var(--color-text-secondary);
}

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

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

.breadcrumb-sep {
  color: var(--color-border);
  user-select: none;
}

.breadcrumb-current {
  color: var(--color-text);
  font-weight: 500;
}

/* 页面标题区 */
.page-header {
  padding: 32px 0 28px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 36px;
}

.page-title {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 10px;
}

.page-description {
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-text-secondary);
  max-width: 720px;
}

/* 页脚 */
.site-footer {
  background-color: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: 48px 0 0;
}

.footer-inner {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  padding-bottom: 40px;
}

.footer-col-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 16px;
}

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

.footer-links a {
  color: var(--color-footer-text);
  font-size: 14px;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--color-white);
  text-decoration: none;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
}

.footer-bottom .copyright {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 24px;
  font-size: 13px;
  color: rgba(231, 229, 228, 0.8);
}

/* --------------------------------------------------------------------------
   Components · 通用组件：标签、按钮、标题、FAQ、表格、卡片、任务条、步骤
   -------------------------------------------------------------------------- */

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.6;
  border-radius: 999px;
  background-color: var(--color-surface);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  white-space: nowrap;
}

.tag-rule {
  background-color: #fef3c7;
  color: #92400e;
  border-color: #fde68a;
}

.tag-work {
  background-color: #fef3c7;
  color: #92400e;
  border-color: #fde68a;
}

.tag-shoot {
  background-color: #e0f2fe;
  color: #075985;
  border-color: #bae6fd;
}

.tag-edit {
  background-color: #fce7f3;
  color: #9d174d;
  border-color: #fbcfe8;
}

.tag-life {
  background-color: #dcfce7;
  color: #166534;
  border-color: #bbf7d0;
}

.tag-admin {
  background-color: #ede9fe;
  color: #5b21b6;
  border-color: #ddd6fe;
}

.tag-forum {
  background-color: var(--color-surface);
  color: var(--color-text-secondary);
  border-color: var(--color-border);
}

.tag-status {
  background-color: #fef3c7;
  color: #92400e;
  border-color: #fde68a;
}

.tag-replies {
  background-color: var(--color-surface);
  color: var(--color-text-secondary);
  border-color: var(--color-border);
}

.tag-set {
  background-color: var(--color-surface);
  color: var(--color-text-secondary);
  border-color: var(--color-border);
}

/* 区块标题 */
.section-title {
  font-size: 21px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-text);
  margin-bottom: 12px;
}

.section-desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
  max-width: 720px;
}

/* 区块通用 */
.section-block {
  padding: 36px 0;
  border-bottom: 1px solid var(--color-border);
}

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

/* 相关链接条 */
.related-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
  margin-top: 40px;
}

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
}

.related-links-item {
  display: inline-flex;
  padding: 6px 16px;
  font-size: 13px;
  color: var(--color-accent);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.related-links-item:hover {
  border-color: var(--color-accent);
  background-color: rgba(180, 83, 9, 0.04);
  text-decoration: none;
}

/* 按钮变体 */
.btn-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 28px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-white);
  background-color: var(--color-accent);
  border-radius: var(--radius-md);
  transition: background-color 0.2s ease;
}

.btn-link:hover {
  background-color: var(--color-accent-dark);
  color: var(--color-white);
  text-decoration: none;
}

/* FAQ 原生折叠 */
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
  margin-bottom: 12px;
  transition: border-color 0.2s ease;
}

.faq-item:hover {
  border-color: #d6d3d1;
}

.faq-item summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  user-select: none;
}

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

.faq-item summary::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--color-accent);
  border-bottom: 2px solid var(--color-accent);
  transform: rotate(-45deg);
  transition: transform 0.2s ease;
  flex-shrink: 0;
  margin-right: 4px;
}

.faq-item[open] summary::before {
  transform: rotate(45deg);
}

.faq-item[open] summary {
  border-bottom: 1px solid var(--color-border);
}

.faq-item > p {
  padding: 16px 20px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-text-secondary);
}

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

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

.board-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

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

.board-table thead th {
  background-color: var(--color-surface);
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
}

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

.board-table tbody th {
  font-weight: 600;
  color: var(--color-accent);
  white-space: nowrap;
}

.board-table td {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* 步骤（通用编号） */
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-white);
  background-color: var(--color-accent);
  border-radius: 50%;
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Pages · 首页
   -------------------------------------------------------------------------- */

.home-main {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 24px 64px;
}

/* 首屏区 */
.hero-section {
  padding: 56px 0 48px;
}

.hero-copy {
  max-width: 720px;
  margin-bottom: 40px;
}

.hero-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 14px;
}

.hero-description {
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text-secondary);
  max-width: 640px;
}

.hero-actions {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
  align-items: stretch;
}

.hero-col {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.hero-col-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
}

.hero-col-desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.op-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: auto;
}

.op-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-white);
  background-color: var(--color-accent);
  border-radius: var(--radius-md);
  transition: background-color 0.2s ease;
}

.op-btn:hover {
  background-color: var(--color-accent-dark);
  color: var(--color-white);
  text-decoration: none;
}

.op-btn-secondary {
  background-color: var(--color-bg);
  color: var(--color-accent);
  border: 1px solid var(--color-border);
}

.op-btn-secondary:hover {
  border-color: var(--color-accent);
  background-color: rgba(180, 83, 9, 0.04);
  color: var(--color-accent-dark);
}

.notice-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 4px;
}

.notice-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  line-height: 1.6;
}

.notice-list li a {
  color: var(--color-text);
  transition: color 0.2s ease;
}

.notice-list li a:hover {
  color: var(--color-accent);
}

.hero-media {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-border);
}

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

.topic-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.topic-tags .tag {
  transition: border-color 0.2s ease, color 0.2s ease;
}

.topic-tags .tag:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  text-decoration: none;
}

/* 任务分组引导 */
.task-guide {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.task-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.task-item {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

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

.task-num {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-accent);
}

.task-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
}

.task-desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  flex-grow: 1;
}

.task-link {
  font-size: 13px;
  font-weight: 500;
}

/* 热门话题预览 */
.hot-topics {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.hot-topic-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 24px;
}

.hot-topic-item {
  display: flex;
  gap: 20px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.hot-topic-item:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.topic-thumb {
  margin: 0;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-border);
}

.topic-thumb img {
  width: 120px;
  height: 90px;
  object-fit: cover;
}

.topic-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.topic-title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
}

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

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

.topic-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.topic-status {
  font-size: 12px;
  color: var(--color-text-secondary);
}

.topic-excerpt {
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 社区定位说明 */
.community-position {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.position-text {
  font-size: 15px;
  line-height: 1.85;
  color: var(--color-text-secondary);
  max-width: 720px;
}

/* 参与方式引条 */
.join-guide {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.join-steps {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 20px;
}

.join-steps li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
  color: var(--color-text);
}

.join-steps li a {
  font-weight: 600;
}

/* FAQ 预览 */
.faq-preview {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.faq-list {
  margin-top: 20px;
  max-width: 720px;
}

/* --------------------------------------------------------------------------
   Pages · 版块总览 (bankuai)
   -------------------------------------------------------------------------- */

/* 版块分组目录 */
.section-group-directory .group-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.group-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: border-color 0.2s ease;
}

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

.group-card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.group-card-desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.group-board-list li {
  margin-bottom: 8px;
}

.group-board-list a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  padding: 4px 0;
  transition: color 0.2s ease;
}

.group-board-list a::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent);
  flex-shrink: 0;
}

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

/* 内容配图 */
.content-media {
  margin: 0 0 24px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-border);
}

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

.content-media figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--color-text-secondary);
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.content-media-inline {
  max-width: 420px;
}

/* 参与提示条 */
.section-participate-tip {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.participate-tip-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.tip-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.tip-text p {
  font-size: 14px;
  color: var(--color-text-secondary);
}

/* 子话题标签 */
.topic-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.topic-tag-list a {
  display: inline-flex;
  padding: 8px 18px;
  font-size: 14px;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

/* --------------------------------------------------------------------------
   Pages · 话题热榜 (huati)
   -------------------------------------------------------------------------- */

/* 方向筛选标签 */
.topic-filter {
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
}

.filter-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.filter-tag {
  display: inline-flex;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.filter-tag:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  text-decoration: none;
}

/* 置顶话题 */
.topic-layout {
  padding: 32px 0;
}

.pinned-topics {
  margin-bottom: 48px;
}

.topic-item {
  display: flex;
  gap: 20px;
  padding: 20px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color 0.2s ease;
}

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

.topic-pinned {
  background-color: var(--color-surface);
}

.topic-media {
  margin: 0;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-border);
}

.topic-media img {
  width: 180px;
  height: 130px;
  object-fit: cover;
}

.topic-content {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
  min-width: 0;
}

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

.topic-content .topic-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* 分组话题列表 */
.topic-group {
  margin-bottom: 40px;
}

.group-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

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

.topic-list .topic-item {
  padding: 16px 20px;
  background-color: var(--color-bg);
}

.topic-list .topic-content {
  gap: 6px;
}

.topic-list .topic-title {
  font-size: 15px;
}

/* 参与指引 */
.participate-guide {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

.guide-text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
  max-width: 720px;
}

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

.guide-link {
  display: inline-flex;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease;
}

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

/* --------------------------------------------------------------------------
   Pages · 新手指南 (xinshou)
   -------------------------------------------------------------------------- */

.section-community-intro {
  padding: 24px 0;
}

.section-community-intro h2 {
  font-size: 21px;
  font-weight: 700;
  margin-bottom: 12px;
}

.section-community-intro p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  max-width: 720px;
}

/* 参与路径步骤 */
.section-steps {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

.steps-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.step-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-white);
  background-color: var(--color-accent);
  border-radius: 50%;
  flex-shrink: 0;
}

.step-content {
  flex: 1;
  min-width: 0;
}

.step-content h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.step-content p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.step-content a {
  font-weight: 500;
}

.step-figure {
  margin: 24px 0 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-border);
}

.step-figure img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

/* 发帖与回复规范 */
.section-norms {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

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

.norm-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: border-color 0.2s ease;
}

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

.norm-card h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.norm-card p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* 内容边界 */
.section-boundary {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

.boundary-list {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
  margin: 20px 0;
}

.boundary-list li {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.boundary-list strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.section-boundary > p {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.section-boundary > p a {
  font-weight: 500;
}

/* 相关帮助入口 */
.section-help-links {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

.help-links-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.help-links-list a {
  display: inline-flex;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease;
}

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

/* --------------------------------------------------------------------------
   Pages · 版务公告 (gonggao)
   -------------------------------------------------------------------------- */

/* 通知类型 */
.notice-types {
  padding: 24px 0;
}

.type-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.type-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: border-color 0.2s ease;
}

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

.type-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.type-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* 公告列表 */
.announcement-list {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

.announcement-group {
  margin-bottom: 32px;
}

.announcement-group > h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

.announcement-item {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin-bottom: 12px;
}

.announcement-item .type-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-accent);
  background-color: rgba(180, 83, 9, 0.08);
  padding: 2px 10px;
  border-radius: 999px;
  margin-bottom: 8px;
}

.announcement-item .item-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.announcement-item .item-excerpt {
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* 反馈处理流程 */
.feedback-process {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.process-step {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.process-step h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
}

.process-step p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.process-figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-border);
}

.process-figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.process-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--color-text-secondary);
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

/* 相关入口 */
.related-links p {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.related-links p a {
  margin-right: 16px;
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   Pages · 常见问题 (changjian)
   -------------------------------------------------------------------------- */

.faq-section {
  padding: 24px 0;
}

.faq-group {
  margin-bottom: 36px;
}

.faq-group-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

/* 未解决指引 */
.unresolved-guide {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

.guide-text {
  flex: 1;
  min-width: 0;
}

.guide-text p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.guide-media {
  margin: 0;
  flex-shrink: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-border);
}

.guide-media img {
  width: 240px;
  height: 160px;
  object-fit: cover;
}

/* 帮助链接网格 */
.help-links {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

.help-links-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.help-link-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.help-link-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  text-decoration: none;
}

.help-link-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
}

.help-link-desc {
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   Pages · 意见反馈 (fankui)
   -------------------------------------------------------------------------- */

/* 反馈类型 */
.feedback-types {
  padding: 24px 0;
}

.feedback-types .type-card p:last-child {
  margin-top: 8px;
  font-size: 13px;
  color: var(--color-accent);
  font-weight: 500;
}

/* 处理流程 */
.process-section {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

.process-media {
  margin: 24px 0 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-border);
}

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

.process-media figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--color-text-secondary);
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

/* 自查清单 */
.self-check {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

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

.check-list li {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
}

.check-list h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.check-list p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.check-list p a {
  font-weight: 500;
}

/* 相关帮助 */
.fankui .related-links {
  border-top: 1px solid var(--color-border);
}

.fankui .related-links h2 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
}

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

.fankui .related-links a {
  display: inline-flex;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease;
}

.fankui .related-links a:hover {
  border-color: var(--color-accent);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   Pages · 404
   -------------------------------------------------------------------------- */

.error-main {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 24px 64px;
}

.error-section {
  padding: 80px 0;
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}

.error-code {
  font-size: 72px;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.2;
  margin-bottom: 16px;
}

.error-section h1 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}

.error-desc {
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
}

.btn-back {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 32px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-white);
  background-color: var(--color-accent);
  border-radius: var(--radius-md);
  margin-bottom: 40px;
  transition: background-color 0.2s ease;
}

.btn-back:hover {
  background-color: var(--color-accent-dark);
  color: var(--color-white);
  text-decoration: none;
}

.error-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}

.error-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   Responsive · 响应式断点
   -------------------------------------------------------------------------- */

/* 平板及以下 */
@media (max-width: 1024px) {
  .hero-actions {
    grid-template-columns: 1fr 1fr;
  }

  .hero-col:last-child {
    grid-column: 1 / -1;
  }

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

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

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

/* 手机端 */
@media (max-width: 768px) {
  .header-inner {
    padding: 0 16px;
  }

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

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 4px 12px rgba(41, 37, 36, 0.08);
    padding: 0;
    display: none;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0;
    max-height: 70vh;
    overflow-y: auto;
  }

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

  .site-nav .nav-list {
    display: flex;
  }

  .site-nav:has(.nav-list.is-open) {
    display: block;
  }

  .nav-list li a {
    padding: 14px 24px;
    border-radius: 0;
    border-bottom: 1px solid var(--color-border);
  }

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

  .nav-list li a.is-current {
    background-color: var(--color-surface);
  }

  .btn-post {
    margin: 12px 16px;
  }

  .site-nav .btn-post {
    display: inline-flex;
    margin: 12px 16px;
  }

  /* 首页 */
  .home-main,
  .inner-main {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-section {
    padding: 40px 0 32px;
  }

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

  .hero-actions {
    grid-template-columns: 1fr;
  }

  .hero-col:last-child {
    grid-column: auto;
  }

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

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

  .hot-topic-item {
    flex-direction: column;
  }

  .topic-thumb img {
    width: 100%;
    height: 160px;
  }

  .join-steps {
    flex-direction: column;
    align-items: stretch;
  }

  .join-steps li {
    justify-content: center;
  }

  /* 内页 */
  .page-header {
    padding: 24px 0 20px;
    margin-bottom: 24px;
  }

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

  .section-block {
    padding: 28px 0;
  }

  /* 版块总览 */
  .section-group-directory .group-grid {
    grid-template-columns: 1fr;
  }

  .participate-tip-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  /* 话题热榜 */
  .topic-item {
    flex-direction: column;
  }

  .topic-media img {
    width: 100%;
    height: 160px;
  }

  /* 新手指南 */
  .norms-grid {
    grid-template-columns: 1fr;
  }

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

  /* 公告 */
  .type-grid {
    grid-template-columns: 1fr;
  }

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

  /* 常见问题 */
  .unresolved-guide {
    flex-direction: column;
  }

  .guide-media img {
    width: 100%;
    height: 180px;
  }

  .help-links-grid {
    grid-template-columns: 1fr;
  }

  /* 反馈 */
  .check-list {
    grid-template-columns: 1fr;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-bottom: 32px;
  }

  .error-section {
    padding: 60px 0;
  }

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

/* 小手机 */
@media (max-width: 480px) {
  .brand-slogan {
    display: none;
  }

  .brand-name {
    font-size: 20px;
  }

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

  .task-item {
    padding: 20px 16px;
  }

  .topic-tags {
    gap: 6px;
  }

  .topic-tags .tag {
    font-size: 11px;
    padding: 2px 8px;
  }

  .faq-item summary {
    padding: 14px 16px;
  }

  .faq-item > p {
    padding: 14px 16px;
  }

  .board-table th,
  .board-table td {
    padding: 12px 14px;
    font-size: 13px;
  }

  .group-card {
    padding: 20px 16px;
  }

  .step-item {
    padding: 16px;
  }

  .norm-card {
    padding: 16px;
  }

  .type-card {
    padding: 20px 16px;
  }

  .announcement-item {
    padding: 14px 16px;
  }

  .process-step {
    padding: 20px 16px;
  }

  .help-link-card {
    padding: 16px;
  }

  .check-list li {
    padding: 16px;
  }

  .footer-inner {
    padding-left: 16px;
    padding-right: 16px;
  }

  .footer-bottom .copyright {
    padding: 0 16px;
    font-size: 12px;
  }
}