/* ==========================================================
   糖心vlogtv 全站样式表
   版本: 1.0
   说明: 知识库风社区手册视觉体系
   ========================================================== */

/* ==========================================================
   01. Base — 基础变量、重置与全局元素
   ========================================================== */

:root {
  --color-bg: #f6f5f1;
  --color-content: #ffffff;
  --color-text: #26241f;
  --color-primary: #b5432f;
  --color-secondary: #2e6e5e;
  --color-border: #e3dfd6;
  --color-link: #2e5f8a;
  --color-muted: #6f6a5e;
  --color-muted-light: #8a8578;
  --color-header-bg: #ffffff;
  --color-header-border: #e3dfd6;
  --color-footer-bg: #26241f;
  --color-footer-text: #c9c4b8;
  --color-footer-title: #f0ede6;
  --color-footer-border: #3a372f;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", Consolas, "Courier New", monospace;
  --header-height: 64px;
  --container-width: 1100px;
  --text-width: 720px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --focus-outline: 2px solid var(--color-secondary);
  --focus-offset: 2px;
}

*, *::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: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: var(--focus-outline);
  outline-offset: var(--focus-offset);
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  font-size: inherit;
  background: none;
  border: none;
  cursor: pointer;
  color: inherit;
}

strong, b {
  font-weight: 600;
}

/* 术语强调样式 — 知识库风格 */
.term, code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  background: rgba(46, 110, 94, 0.08);
  padding: 0.1em 0.35em;
  border-radius: var(--radius-sm);
  color: var(--color-secondary);
}

/* 滚动锚点偏移，避免被粘性页头遮挡 */
[id] {
  scroll-margin-top: calc(var(--header-height) + 16px);
}

/* ==========================================================
   02. Layout — 全站布局骨架
   ========================================================== */

/* --- 页头 --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-header-bg);
  border-bottom: 1px solid var(--color-header-border);
  width: 100%;
}

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

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

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

.brand-name {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.01em;
}

.brand-slogan {
  font-size: 0.8rem;
  color: var(--color-muted);
  white-space: nowrap;
}

/* --- 主导航 --- */
.site-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
}

.nav-list li a {
  display: block;
  padding: 8px 14px;
  font-size: 0.92rem;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.nav-list li a:hover {
  background-color: rgba(46, 110, 94, 0.08);
  color: var(--color-secondary);
  text-decoration: none;
}

.nav-list li a.is-current {
  background-color: rgba(181, 67, 47, 0.08);
  color: var(--color-primary);
  font-weight: 600;
}

/* 移动导航按钮 — 桌面隐藏 */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: var(--radius-sm);
  background: transparent;
}

.nav-toggle:hover {
  background-color: rgba(46, 110, 94, 0.08);
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 1px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

/* --- 主内容区 --- */
.site-main {
  flex: 1 0 auto;
  width: 100%;
}

.home-main {
  width: 100%;
}

.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 64px;
  width: 100%;
}

/* --- 页脚 --- */
.site-footer {
  flex-shrink: 0;
  background-color: var(--color-footer-bg);
  color: var(--color-footer-text);
  width: 100%;
  margin-top: auto;
}

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

.footer-col h3.footer-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-footer-title);
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

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

.footer-links a {
  color: var(--color-footer-text);
  font-size: 0.88rem;
  transition: color var(--transition-fast);
}

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

.footer-brand {
  font-size: 0.88rem;
  line-height: 1.7;
}

.footer-note {
  font-size: 0.82rem;
  color: var(--color-muted-light);
  margin-top: 12px;
  line-height: 1.6;
}

.footer-boundary {
  font-size: 0.82rem;
  color: var(--color-muted-light);
  margin-top: 8px;
  line-height: 1.6;
  border-top: 1px solid var(--color-footer-border);
  padding-top: 12px;
}

.footer-bottom {
  border-top: 1px solid var(--color-footer-border);
  padding: 20px 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.82rem;
  color: var(--color-muted-light);
  line-height: 1.6;
}

.copyright {
  margin-bottom: 4px;
}

.footer-statement {
  font-size: 0.78rem;
}

/* ==========================================================
   03. Components — 通用组件
   ========================================================== */

/* --- 面包屑 --- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 20px 0 0;
  font-size: 0.85rem;
  color: var(--color-muted);
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--color-link);
  transition: color var(--transition-fast);
}

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

.breadcrumb-sep {
  color: var(--color-muted-light);
  font-size: 0.8rem;
}

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

/* --- 页面标题区 --- */
.page-header {
  padding: 28px 0 20px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 28px;
}

.page-title {
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.35;
  margin-bottom: 10px;
}

.page-description {
  font-size: 0.98rem;
  color: var(--color-muted);
  max-width: 720px;
  line-height: 1.7;
}

/* --- 区块标题 --- */
.section-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
  line-height: 1.4;
  position: relative;
  padding-left: 14px;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.25em;
  bottom: 0.25em;
  width: 4px;
  border-radius: 2px;
  background-color: var(--color-primary);
}

.section-desc {
  font-size: 0.92rem;
  color: var(--color-muted);
  margin-bottom: 20px;
  line-height: 1.7;
}

/* --- 按钮 --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  font-size: 0.92rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  line-height: 1.5;
  min-height: 44px;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
  border: 1px solid var(--color-primary);
}

.btn-primary:hover {
  background-color: #9e3a28;
  border-color: #9e3a28;
  color: #ffffff;
  text-decoration: none;
}

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

.btn-secondary:hover {
  background-color: rgba(46, 110, 94, 0.08);
  color: var(--color-secondary);
  text-decoration: none;
}

/* --- 标签 --- */
.tag {
  display: inline-block;
  padding: 2px 10px;
  font-size: 0.78rem;
  border-radius: 999px;
  background-color: rgba(46, 110, 94, 0.1);
  color: var(--color-secondary);
  line-height: 1.6;
  white-space: nowrap;
}

.tag-pinned {
  background-color: rgba(181, 67, 47, 0.1);
  color: var(--color-primary);
}

.tag-normal {
  background-color: rgba(46, 110, 94, 0.1);
  color: var(--color-secondary);
}

.tag-essence {
  background-color: rgba(181, 67, 47, 0.08);
  color: var(--color-primary);
  border: 1px solid rgba(181, 67, 47, 0.25);
}

/* --- 话题列表 --- */
.topic-list {
  display: flex;
  flex-direction: column;
}

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

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

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

.topic-title {
  font-size: 1.02rem;
  font-weight: 500;
  line-height: 1.5;
  margin-bottom: 6px;
}

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

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

.topic-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--color-muted);
  flex-wrap: wrap;
}

.topic-excerpt {
  font-size: 0.88rem;
  color: var(--color-muted);
  line-height: 1.6;
  margin-top: 6px;
}

.topic-date {
  font-size: 0.8rem;
  color: var(--color-muted-light);
}

/* --- 版块横幅图 --- */
.board-banner,
.section-banner,
.page-cover {
  margin: 0 0 28px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background-color: var(--color-content);
}

.board-banner img,
.section-banner img,
.page-cover img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.board-banner figcaption,
.section-banner figcaption,
.page-cover figcaption {
  padding: 12px 20px;
  font-size: 0.85rem;
  color: var(--color-muted);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-content);
  line-height: 1.6;
}

/* --- 侧栏组件 --- */
.widget, .sidebar-module, .sidebar-block {
  background-color: var(--color-content);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 20px;
}

.widget-title, .sidebar-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
  line-height: 1.4;
}

.tips-list, .guide-list, .etiquette-list, .check-list, .sidebar-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.tips-list li, .guide-list li, .etiquette-list li, .check-list li, .sidebar-list li {
  font-size: 0.88rem;
  color: var(--color-text);
  line-height: 1.6;
  padding-left: 18px;
  position: relative;
}

.tips-list li::before, .guide-list li::before, .etiquette-list li::before, .check-list li::before, .sidebar-list li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

/* 侧栏链接列表 */
.board-links, .related-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.board-links li, .related-list li {
  border-bottom: 1px solid var(--color-border);
}

.board-links li:last-child, .related-list li:last-child {
  border-bottom: none;
}

.board-links a, .related-list a {
  display: block;
  padding: 10px 4px;
  font-size: 0.9rem;
  color: var(--color-text);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.board-links a:hover, .related-list a:hover {
  color: var(--color-primary);
  padding-left: 10px;
  text-decoration: none;
}

/* --- 标签组 --- */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-list li {
  margin: 0;
}

.tag-list a,
.tag-link {
  display: inline-block;
  padding: 6px 16px;
  font-size: 0.85rem;
  border-radius: 999px;
  background-color: var(--color-content);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  transition: border-color var(--transition-fast), color var(--transition-fast), background-color var(--transition-fast);
  line-height: 1.5;
}

.tag-list a:hover,
.tag-link:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
  background-color: rgba(46, 110, 94, 0.05);
  text-decoration: none;
}

/* --- 相关链接导航 --- */
.related-links {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 24px;
  padding: 16px 20px;
  background-color: var(--color-content);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.related-links-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text);
  margin-right: 4px;
}

.related-links-item {
  font-size: 0.88rem;
  color: var(--color-link);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

.related-links-item:hover {
  color: var(--color-primary);
  background-color: rgba(181, 67, 47, 0.06);
  text-decoration: none;
}

/* --- 文本链接 --- */
.text-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.88rem;
  color: var(--color-link);
  font-weight: 500;
  transition: color var(--transition-fast);
}

.text-link:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.text-link::after {
  content: " →";
}

/* --- 公告列表 --- */
.announce-list {
  display: flex;
  flex-direction: column;
}

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

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

.announce-item a {
  font-size: 0.88rem;
  color: var(--color-link);
  transition: color var(--transition-fast);
}

.announce-item a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.announce-date {
  font-size: 0.8rem;
  color: var(--color-muted-light);
  display: block;
  margin-bottom: 2px;
}

.announce-text {
  font-size: 0.88rem;
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: 4px;
}

.announce-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.announce-summary {
  font-size: 0.85rem;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 6px;
}

.announce-meta {
  font-size: 0.8rem;
  color: var(--color-muted-light);
}

/* --- 步骤条 --- */
.path-steps, .overview-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  counter-reset: step-counter;
}

.path-step, .overview-step {
  background-color: var(--color-content);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  text-align: center;
  position: relative;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.path-step:hover, .overview-step:hover {
  border-color: var(--color-secondary);
  box-shadow: 0 2px 8px rgba(38, 36, 31, 0.06);
}

.step-num, .step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: #ffffff;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.step-text, .step-label {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.step-detail {
  display: block;
  font-size: 0.8rem;
  color: var(--color-muted);
  line-height: 1.5;
}

/* ==========================================================
   04. Pages — 首页
   ========================================================== */

/* --- 首屏区 --- */
.hero-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 56px 24px 48px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

#hero-title {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 16px;
  color: var(--color-text);
}

.hero-statement {
  font-size: 1rem;
  color: var(--color-text);
  line-height: 1.8;
  margin-bottom: 12px;
}

.hero-status {
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

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

.hero-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background-color: var(--color-content);
}

.hero-figure img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

/* --- 版块目录 --- */
.board-directory {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
  border-top: 1px solid var(--color-border);
}

.board-list {
  display: flex;
  flex-direction: column;
  margin-bottom: 32px;
}

.board-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-fast);
}

.board-row:hover {
  background-color: rgba(255, 255, 255, 0.6);
}

.board-row:last-child {
  border-bottom: none;
}

.board-info {
  flex: 1;
  min-width: 0;
}

.board-name {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.board-name a {
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.board-name a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.board-desc {
  font-size: 0.88rem;
  color: var(--color-muted);
  line-height: 1.6;
}

.board-tags {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
  padding-top: 4px;
}

.directory-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background-color: var(--color-content);
}

.directory-figure img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

/* --- 最新话题 --- */
.latest-topics {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
  border-top: 1px solid var(--color-border);
}

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

.topic-list .topic-item.is-pinned {
  background-color: rgba(181, 67, 47, 0.03);
  padding: 16px 20px;
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-primary);
  margin-bottom: 8px;
}

.topic-list .topic-item.is-pinned:last-child {
  margin-bottom: 0;
}

.topic-list .topic-item .badge {
  display: inline-block;
  padding: 1px 8px;
  font-size: 0.75rem;
  border-radius: 999px;
  background-color: rgba(181, 67, 47, 0.08);
  color: var(--color-primary);
  line-height: 1.5;
}

/* --- 公告与版规两栏 --- */
.announce-rules {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  border-top: 1px solid var(--color-border);
}

.announce-column,
.rules-column {
  background-color: var(--color-content);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.rules-points {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rules-points li {
  font-size: 0.88rem;
  color: var(--color-text);
  line-height: 1.6;
  padding-left: 18px;
  position: relative;
}

.rules-points li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-secondary);
  font-weight: 700;
}

/* --- 新手参与路径 --- */
.newbie-path {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
  border-top: 1px solid var(--color-border);
}

/* --- 反馈引导条 --- */
.feedback-guide {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  border-top: 1px solid var(--color-border);
}

.feedback-text {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.7;
  flex: 1;
  min-width: 260px;
}

.feedback-links {
  display: flex;
  gap: 12px;
  flex-shrink: 0;
}

/* ==========================================================
   05. Pages — 版块详情页通用
   ========================================================== */

/* --- 双栏布局 --- */
.page-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
  align-items: start;
}

.main-content, .main-col, .main-column {
  min-width: 0;
}

.sidebar-area, .sidebar-col, .sidebar {
  min-width: 0;
}

/* --- 糖心话题版块 --- */
.topic-section {
  margin-bottom: 36px;
}

.topic-section .section-title {
  margin-bottom: 16px;
}

.pinned-list .topic-card {
  background-color: rgba(181, 67, 47, 0.03);
  border-left: 3px solid var(--color-primary);
  padding: 16px 20px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.latest-list .topic-card {
  border-bottom: 1px solid var(--color-border);
}

.latest-list .topic-card:last-child {
  border-bottom: none;
}

/* 版块底部导航 */
.board-footer-nav {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}

.board-footer-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.board-footer-nav ul li a {
  display: inline-block;
  padding: 8px 16px;
  font-size: 0.88rem;
  border-radius: var(--radius-sm);
  background-color: var(--color-content);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.board-footer-nav ul li a:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
  text-decoration: none;
}

/* --- 直播闲聊版块 --- */
.board-intro {
  background-color: var(--color-content);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 28px;
}

.board-intro p {
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.7;
}

.tag-groups {
  margin-bottom: 32px;
}

.main-col .latest-topics .topic-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}

.main-col .latest-topics .topic-item:last-child {
  border-bottom: none;
}

.topic-item .topic-title {
  margin-bottom: 4px;
}

.topic-item .topic-meta {
  font-size: 0.8rem;
  color: var(--color-muted-light);
}

/* --- 片单同好版块 --- */
.topic-tags {
  margin-bottom: 32px;
}

.main-column .topic-section .topic-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.sidebar-module .sidebar-desc {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-bottom: 12px;
  line-height: 1.6;
}

.post-guide-banner {
  margin-top: 40px;
  padding: 32px;
  background-color: var(--color-content);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
}

.post-guide-banner .section-title {
  display: inline-block;
}

.post-guide-banner .section-desc {
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

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

.guide-link {
  display: inline-block;
  padding: 10px 24px;
  font-size: 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-secondary);
  color: var(--color-secondary);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  min-height: 44px;
  line-height: 1.5;
}

.guide-link:hover {
  background-color: var(--color-secondary);
  color: #ffffff;
  text-decoration: none;
}

/* --- 疑难互助版块 --- */
.layout-shell {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
  align-items: start;
}

.content-section {
  background-color: var(--color-content);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 20px;
}

.content-section .section-title {
  margin-bottom: 14px;
}

.content-section p {
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 10px;
}

/* FAQ 折叠 */
.faq-group {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  overflow: hidden;
}

.faq-group-title {
  font-size: 0.9rem;
  font-weight: 500;
  padding: 14px 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background-color: var(--color-content);
  transition: background-color var(--transition-fast);
}

.faq-group-title:hover {
  background-color: rgba(46, 110, 94, 0.04);
}

.faq-group-title::after {
  content: "+";
  font-size: 1.1rem;
  color: var(--color-secondary);
  flex-shrink: 0;
}

.faq-group.open .faq-group-title::after {
  content: "−";
}

.faq-group-list {
  display: none;
  padding: 0 16px 14px;
}

.faq-group.open .faq-group-list {
  display: block;
}

/* 问题状态 */
.status-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.status-item {
  background-color: var(--color-content);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
}

.status-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  display: block;
  margin-bottom: 2px;
}

.status-item p {
  font-size: 0.8rem;
  color: var(--color-muted);
  line-height: 1.5;
  margin: 0;
}

.status-item .solved {
  color: var(--color-secondary);
  font-size: 0.78rem;
  display: inline-block;
  padding: 1px 8px;
  border-radius: 999px;
  background-color: rgba(46, 110, 94, 0.1);
}

.status-item .replied {
  color: var(--color-link);
  font-size: 0.78rem;
  display: inline-block;
  padding: 1px 8px;
  border-radius: 999px;
  background-color: rgba(46, 95, 138, 0.1);
}

/* ==========================================================
   06. Pages — 文档页（版规公告、新手指引）
   ========================================================== */

/* --- 版规公告 --- */
.rule-intro {
  background-color: var(--color-content);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin-bottom: 28px;
}

.rule-intro p {
  font-size: 0.92rem;
  color: var(--color-text);
  line-height: 1.8;
  margin-bottom: 10px;
}

.rule-intro p:last-child {
  margin-bottom: 0;
}

.rule-section {
  background-color: var(--color-content);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin-bottom: 20px;
}

.rule-section .section-title {
  margin-bottom: 16px;
}

.rule-list {
  counter-reset: rule-counter;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rule-list li {
  counter-increment: rule-counter;
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.7;
  padding-left: 32px;
  position: relative;
}

.rule-list li::before {
  content: counter(rule-counter, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-primary);
  font-weight: 600;
  background-color: rgba(181, 67, 47, 0.08);
  border-radius: var(--radius-sm);
  padding: 1px 6px;
  line-height: 1.5;
}

/* 违规处理流程时间线 */
.process-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.process-step {
  position: relative;
  padding: 0 0 24px 32px;
  border-left: 2px solid var(--color-border);
  margin-left: 14px;
}

.process-step:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.process-step::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--color-secondary);
  border: 2px solid var(--color-content);
}

.process-step .step-number {
  position: static;
  display: inline-block;
  background: none;
  color: var(--color-secondary);
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 4px;
  width: auto;
  height: auto;
}

.process-step .step-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  display: block;
  margin-bottom: 4px;
}

.process-step p {
  font-size: 0.88rem;
  color: var(--color-muted);
  line-height: 1.6;
}

/* 近期公告 */
.related-entry {
  background-color: var(--color-content);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin-top: 28px;
}

.related-desc {
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

.related-entry .related-links {
  background: none;
  border: none;
  padding: 0;
  margin: 0;
}

.sub-section-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 20px 0 12px;
  line-height: 1.4;
}

/* --- 新手指引 --- */
.guide-overview {
  background-color: var(--color-content);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 32px;
}

.guide-step {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 32px;
  align-items: start;
  background-color: var(--color-content);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
  margin-bottom: 20px;
}

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

.step-content p {
  font-size: 0.92rem;
  color: var(--color-text);
  line-height: 1.8;
  margin-bottom: 12px;
}

.step-content a {
  color: var(--color-link);
  font-weight: 500;
}

.guide-media {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

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

.checklist-section {
  background-color: var(--color-content);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin-bottom: 28px;
}

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

.checklist li {
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.7;
  padding-left: 28px;
  position: relative;
}

.checklist li::before {
  content: "□";
  position: absolute;
  left: 0;
  color: var(--color-secondary);
  font-size: 1rem;
}

.next-steps {
  background-color: var(--color-content);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  text-align: center;
}

.next-steps p {
  font-size: 0.92rem;
  color: var(--color-text);
  line-height: 1.8;
  margin-bottom: 12px;
}

.next-steps a {
  color: var(--color-link);
  font-weight: 500;
  margin: 0 8px;
}

/* ==========================================================
   07. Pages — 404 页面
   ========================================================== */

.error-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 80px 24px;
  width: 100%;
  flex: 1 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
}

.error-content {
  text-align: center;
  max-width: 560px;
  width: 100%;
}

.error-title {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: 16px;
}

.error-desc {
  font-size: 1rem;
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: 28px;
}

.error-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.error-link {
  display: inline-block;
  padding: 10px 24px;
  font-size: 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-secondary);
  color: var(--color-secondary);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  min-height: 44px;
  line-height: 1.5;
  background-color: var(--color-content);
}

.error-link:hover {
  background-color: var(--color-secondary);
  color: #ffffff;
  text-decoration: none;
}

.error-tip {
  font-size: 0.85rem;
  color: var(--color-muted-light);
  line-height: 1.6;
}

/* ==========================================================
   08. Responsive — 响应式断点
   ========================================================== */

/* --- 平板及以下 --- */
@media (max-width: 960px) {
  .footer-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

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

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

  .hero-section {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 24px;
  }

  .guide-step {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

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

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-header-bg);
    z-index: 999;
    height: calc(100vh - var(--header-height));
    overflow-y: auto;
    display: block;
    padding: 16px;
    opacity: 1;
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    display: none;
  }

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

  .nav-list li a {
    padding: 14px 16px;
    font-size: 1rem;
    border-radius: var(--radius-md);
    border-bottom: 1px solid var(--color-border);
  }

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

  .inner-main {
    padding: 0 16px 48px;
  }

  .hero-section {
    padding: 32px 16px;
    grid-template-columns: 1fr;
  }

  #hero-title {
    font-size: 1.6rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
  }

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

  .board-directory,
  .latest-topics,
  .announce-rules,
  .newbie-path,
  .feedback-guide {
    padding-left: 16px;
    padding-right: 16px;
  }

  .board-row {
    flex-direction: column;
    gap: 8px;
  }

  .board-tags {
    padding-top: 0;
  }

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

  .path-steps, .overview-steps {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .feedback-guide {
    flex-direction: column;
    align-items: flex-start;
  }

  .feedback-links {
    width: 100%;
    flex-direction: column;
  }

  .feedback-links .btn {
    width: 100%;
  }

  .page-header {
    padding: 20px 0 16px;
  }

  .page-title {
    font-size: 1.5rem;
  }

  .board-banner img,
  .section-banner img,
  .page-cover img {
    height: 140px;
  }

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

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

  .footer-bottom {
    padding: 16px;
  }

  .rule-section,
  .rule-intro,
  .related-entry,
  .checklist-section,
  .next-steps {
    padding: 20px;
  }

  .guide-step {
    padding: 20px;
  }

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

  .content-section {
    padding: 20px;
  }

  .post-guide-banner {
    padding: 24px 20px;
  }

  .error-main {
    padding: 48px 16px;
  }

  .error-title {
    font-size: 2.2rem;
  }

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

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

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

  .path-steps, .overview-steps {
    grid-template-columns: 1fr;
  }

  .tag-list {
    gap: 8px;
  }

  .tag-list a, .tag-link {
    padding: 5px 12px;
    font-size: 0.82rem;
  }

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

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

/* ==========================================================
   09. 滚动出现动画（增强，不影响初始可见性）
   ========================================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 默认可见，仅在支持且未禁用动画时添加淡入效果 */
@media (prefers-reduced-motion: no-preference) {
  .board-directory .board-row,
  .latest-topics .topic-item,
  .announce-rules .announce-column,
  .announce-rules .rules-column,
  .newbie-path .path-step {
    animation: fadeInUp 0.4s ease both;
    animation-play-state: running;
  }

  .board-directory .board-row:nth-child(1) { animation-delay: 0s; }
  .board-directory .board-row:nth-child(2) { animation-delay: 0.05s; }
  .board-directory .board-row:nth-child(3) { animation-delay: 0.1s; }
  .board-directory .board-row:nth-child(4) { animation-delay: 0.15s; }

  .latest-topics .topic-item:nth-child(1) { animation-delay: 0s; }
  .latest-topics .topic-item:nth-child(2) { animation-delay: 0.05s; }
  .latest-topics .topic-item:nth-child(3) { animation-delay: 0.1s; }
  .latest-topics .topic-item:nth-child(4) { animation-delay: 0.15s; }
  .latest-topics .topic-item:nth-child(5) { animation-delay: 0.2s; }
  .latest-topics .topic-item:nth-child(6) { animation-delay: 0.25s; }

  .newbie-path .path-step:nth-child(1) { animation-delay: 0s; }
  .newbie-path .path-step:nth-child(2) { animation-delay: 0.05s; }
  .newbie-path .path-step:nth-child(3) { animation-delay: 0.1s; }
  .newbie-path .path-step:nth-child(4) { animation-delay: 0.15s; }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}