/* ============================================================
   糖心传媒在线看 - 全站样式表
   清晰编辑风 · 白底深字 · 克制强调色
   ============================================================ */

/* ============================================================
   Base · 基础变量与全局重置
   ============================================================ */
:root {
  --color-bg: #ffffff;
  --color-bg-soft: #f7f5f2;
  --color-primary: #1f3a4d;
  --color-primary-dark: #162b3a;
  --color-text: #2c3e50;
  --color-accent: #c8552e;
  --color-accent-dark: #a9441f;
  --color-border: #e8e6e3;
  --color-muted: #6b7a88;
  --color-white: #ffffff;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --container-width: 1200px;
  --header-height: 64px;
  --toolbar-height: 36px;
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --shadow-card: 0 1px 3px rgba(31, 58, 77, 0.08);
  --shadow-hover: 0 4px 12px rgba(31, 58, 77, 0.12);
}

*,
*::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-family);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul,
ol {
  list-style: none;
}

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

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

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--color-primary);
  line-height: 1.35;
  font-weight: 700;
}

.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;
}

/* ============================================================
   Layout · 全站统一布局骨架
   ============================================================ */
.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg);
}

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

/* 顶部工具栏 */
.top-toolbar,
.utility-bar {
  background-color: var(--color-primary);
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
  line-height: 1.4;
}

.toolbar-inner,
.utility-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  min-height: var(--toolbar-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.toolbar-intro {
  color: rgba(255, 255, 255, 0.75);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.toolbar-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.toolbar-links a,
.utility-inner a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
  line-height: 1.4;
  transition: color var(--transition-fast);
}

.toolbar-links a:hover,
.utility-inner a:hover {
  color: #ffffff;
}

/* 页头 */
.site-header {
  background-color: var(--color-white);
  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;
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  flex-shrink: 0;
}

.brand-link {
  display: flex;
  flex-direction: column;
  gap: 0;
  line-height: 1.2;
}

.brand-name {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

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

/* 主导航 */
.site-nav {
  flex: 1;
  display: flex;
  justify-content: flex-end;
}

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

.nav-list li {
  position: relative;
}

.nav-list a {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-list a:hover {
  color: var(--color-accent);
  background-color: var(--color-bg-soft);
}

.nav-list a.is-current {
  color: var(--color-accent);
  font-weight: 600;
}

.nav-list a.is-current::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background-color: var(--color-accent);
  border-radius: 1px;
}

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
  color: var(--color-primary);
  min-height: 44px;
}

.nav-toggle-icon {
  position: relative;
  width: 18px;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 1px;
  transition: background-color var(--transition-fast);
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 1px;
  transition: transform var(--transition-fast);
}

.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 {
  transform: rotate(45deg);
  top: 0;
}

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

.nav-toggle-text {
  font-size: 14px;
  font-weight: 500;
}

/* 面包屑 */
.breadcrumb {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 16px 24px 0;
  font-size: 14px;
  color: var(--color-muted);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

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

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

.breadcrumb-sep {
  color: #b5b0aa;
  margin: 0 2px;
}

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

/* 内页标题区 */
.page-header {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 28px;
}

.page-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.page-description {
  font-size: 16px;
  color: var(--color-muted);
  max-width: 720px;
  line-height: 1.7;
}

/* 内页主容器 */
.inner-main {
  width: 100%;
  padding-bottom: 64px;
}

/* 页脚 */
.site-footer {
  background-color: var(--color-primary);
  color: rgba(255, 255, 255, 0.8);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand {
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.65);
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 14px;
}

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

.footer-col a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  line-height: 1.6;
  transition: color var(--transition-fast);
}

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

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

.footer-bottom p {
  max-width: var(--container-width);
  margin: 0 auto;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* 通用容器 */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* 双栏布局：侧栏在左 */
.layout-shell.sidebar-left {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

/* 双栏布局：侧栏在右（默认） */
.layout-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 32px;
  align-items: start;
}

/* ============================================================
   Components · 通用组件
   ============================================================ */

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  min-height: 44px;
  line-height: 1.4;
}

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

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

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

.btn-secondary:hover {
  border-color: var(--color-primary);
  background-color: var(--color-bg-soft);
  color: var(--color-primary);
}

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

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

.btn-link {
  display: inline-flex;
  align-items: center;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-accent);
  padding: 8px 0;
  min-height: 44px;
}

.btn-link:hover {
  color: var(--color-accent-dark);
}

/* 区块标题 */
.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.section-heading h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary);
}

.section-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  white-space: nowrap;
}

.section-link:hover {
  color: var(--color-accent-dark);
}

.section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 15px;
  color: var(--color-muted);
  margin-bottom: 24px;
  max-width: 720px;
}

/* 区块通用间距 */
.section-block {
  padding: 48px 0;
  border-bottom: 1px solid var(--color-border);
}

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

/* 表格 */
.directory-table-wrap,
.forum-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
}

.directory-table,
.forum-table {
  min-width: 640px;
  font-size: 14px;
}

.directory-table thead th,
.forum-table thead th {
  background-color: var(--color-bg-soft);
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  color: var(--color-primary);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.directory-table tbody td,
.forum-table tbody td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
  line-height: 1.6;
}

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

.directory-table tbody tr:hover,
.forum-table tbody tr:hover {
  background-color: var(--color-bg-soft);
}

.table-link {
  color: var(--color-accent);
  font-weight: 500;
  white-space: nowrap;
}

.table-link:hover {
  color: var(--color-accent-dark);
  text-decoration: underline;
}

/* 卡片 */
.featured-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.featured-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.featured-card .card-media {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-color: var(--color-bg-soft);
}

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

.featured-card .card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 8px;
}

.featured-card .card-body h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
}

.featured-card .card-body p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.65;
  flex: 1;
}

.card-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  margin-top: auto;
  padding-top: 8px;
}

.card-link:hover {
  color: var(--color-accent-dark);
  text-decoration: underline;
}

.card-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-accent);
  background-color: rgba(200, 85, 46, 0.08);
  padding: 2px 10px;
  border-radius: 20px;
  align-self: flex-start;
}

/* 文本链接 */
.text-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

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

/* 提示框 */
.notice-box {
  background-color: #fdf3ee;
  border-left: 3px solid var(--color-accent);
  padding: 16px 20px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 20px 0;
  font-size: 14px;
  line-height: 1.7;
}

.notice-box p {
  color: #7a3a1d;
}

.notice-box strong {
  color: var(--color-accent-dark);
}

/* 相关链接 */
.related-links {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  margin-right: 4px;
}

.related-links-item {
  font-size: 14px;
  color: var(--color-muted);
  padding: 6px 14px;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

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

/* ============================================================
   Pages · 首页
   ============================================================ */
.home-main {
  width: 100%;
}

/* Hero 首屏 */
.hero-section {
  background-color: var(--color-bg-soft);
  border-bottom: 1px solid var(--color-border);
}

.hero-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 56px 24px 64px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-content h1 {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  color: var(--color-primary);
}

.hero-lead {
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 28px;
  max-width: 520px;
}

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

.hero-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-hover);
}

.hero-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* 最新话题 */
.recent-topics {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
}

.topic-list {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
  overflow: hidden;
}

.topic-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-fast);
}

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

.topic-item:hover {
  background-color: var(--color-bg-soft);
}

.topic-title {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

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

.topic-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.reply-count {
  font-size: 13px;
  color: var(--color-muted);
  background-color: var(--color-bg-soft);
  padding: 2px 10px;
  border-radius: 20px;
  white-space: nowrap;
}

/* 讨论分区目录 */
.forum-directory {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
}

/* 精华内容 */
.featured-posts {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.featured-card-wide {
  grid-column: span 2;
}

.featured-card-wide .card-media {
  aspect-ratio: 21 / 8;
}

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

/* 公告与规则双栏 */
.community-hub {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
}

.hub-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 24px;
}

.announcement-col,
.rules-summary-col {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.announcement-col h3,
.rules-summary-col h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--color-primary);
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-border);
}

.announcement-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.announcement-list a {
  font-size: 15px;
  color: var(--color-text);
  display: block;
  line-height: 1.5;
}

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

.rules-summary-col p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

/* 新手指南与反馈入口 */
.get-started {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
}

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

.started-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.started-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.started-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
}

.started-card p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
  flex: 1;
}

.started-card .btn-outline {
  align-self: flex-start;
  margin-top: 8px;
}

/* ============================================================
   Pages · 讨论分区 (forum)
   ============================================================ */
.page-forum .forum-group {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px 24px 40px;
}

.page-forum .forum-group:first-of-type {
  padding-top: 8px;
}

.forum-group .section-title {
  margin-bottom: 8px;
}

.group-intro {
  font-size: 15px;
  color: var(--color-muted);
  margin-bottom: 20px;
  line-height: 1.7;
}

.content-media-inline {
  display: flex;
  align-items: center;
  gap: 20px;
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  margin-bottom: 24px;
}

.content-media-inline img {
  width: 120px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.content-media-inline figcaption {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
}

.guide-promo {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.guide-promo-content {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.guide-promo-content .section-title {
  margin-bottom: 0;
}

.guide-promo-content p {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.7;
  max-width: 640px;
}

.guide-promo-content .btn-primary {
  margin-top: 8px;
}

/* ============================================================
   Pages · 精华内容 (featured)
   ============================================================ */
.page-featured .filter-sidebar {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  position: sticky;
  top: calc(var(--header-height) + 16px);
}

.filter-sidebar h2 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 16px;
}

.filter-list li {
  margin-bottom: 4px;
}

.filter-list a {
  display: block;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.filter-list a:hover {
  background-color: var(--color-white);
  color: var(--color-accent);
}

.filter-note {
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.6;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.featured-content h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.featured-content .featured-grid {
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.featured-content .featured-card-wide {
  grid-column: span 2;
}

.featured-more {
  margin-top: 24px;
  text-align: center;
}

.featured-more a {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-accent);
  padding: 8px 16px;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.featured-more a:hover {
  text-decoration: underline;
}

/* 相关帮助卡片 */
.related-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: box-shadow var(--transition-base);
}

.related-card:hover {
  box-shadow: var(--shadow-hover);
}

.related-card h2 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
}

.related-card p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  flex: 1;
}

.related-card a {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  align-self: flex-start;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

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

/* ============================================================
   Pages · 新手指南 (guide)
   ============================================================ */
.page-guide .guide-aside {
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: sticky;
  top: calc(var(--header-height) + 16px);
}

.aside-card {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
}

.aside-card h2 {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-primary);
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 12px;
}

.aside-list li {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  padding: 5px 0;
  padding-left: 16px;
  position: relative;
}

.aside-list li::before {
  content: "·";
  position: absolute;
  left: 4px;
  color: var(--color-accent);
  font-weight: 700;
}

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

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

.guide-section h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.step-list {
  counter-reset: step;
}

.step-item {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

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

.step-body h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 6px;
}

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

.step-hint {
  display: inline-block;
  font-size: 13px;
  color: var(--color-accent);
  background-color: rgba(200, 85, 46, 0.08);
  padding: 2px 10px;
  border-radius: 20px;
  margin-top: 4px;
}

.guide-figure {
  margin: 32px 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.guide-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.guide-figure figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--color-muted);
  background-color: var(--color-bg-soft);
  text-align: center;
}

.guide-internal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

.guide-internal-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  padding: 6px 16px;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.guide-internal-links a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-dark);
}

/* 操作速查 */
.op-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 24px 0;
}

.op-card {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
}

.op-card h3 {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.op-card p {
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.6;
}

/* ============================================================
   Pages · 社区规则 (rules)
   ============================================================ */
.page-rules .rule-toc {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  position: sticky;
  top: calc(var(--header-height) + 16px);
}

.rule-toc h2 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 12px;
}

.rule-toc ul li {
  margin-bottom: 2px;
}

.rule-toc a {
  display: block;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.rule-toc a:hover {
  background-color: var(--color-white);
  color: var(--color-accent);
}

.rule-sections {
  min-width: 0;
}

.rule-section {
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
}

.rule-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.rule-section h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.rule-section > p {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.rule-list {
  margin: 16px 0;
}

.rule-list li {
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.7;
  padding: 8px 0 8px 24px;
  position: relative;
  border-bottom: 1px solid var(--color-border);
}

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

.rule-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 16px;
  width: 6px;
  height: 6px;
  background-color: var(--color-accent);
  border-radius: 50%;
}

.rule-list strong {
  color: var(--color-primary);
}

.rule-steps {
  margin: 16px 0;
  counter-reset: rule-step;
}

.rule-steps li {
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.7;
  padding: 8px 0 8px 32px;
  position: relative;
  counter-increment: rule-step;
}

.rule-steps li::before {
  content: counter(rule-step);
  position: absolute;
  left: 0;
  top: 10px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.rule-steps strong {
  color: var(--color-primary);
}

.rule-figure {
  margin: 24px 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.rule-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 6;
  object-fit: cover;
}

.rule-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--color-muted);
  background-color: var(--color-bg-soft);
  text-align: center;
}

.report-promo {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-top: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.report-promo p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
  flex: 1;
  min-width: 240px;
}

.report-promo .btn-link {
  flex-shrink: 0;
}

/* ============================================================
   Pages · 帮助中心 (help)
   ============================================================ */
.page-help .faq-categories {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  position: sticky;
  top: calc(var(--header-height) + 16px);
}

.faq-categories h2 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 12px;
}

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

.category-list a {
  display: block;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.category-list a:hover {
  background-color: var(--color-white);
  color: var(--color-accent);
}

.help-media {
  margin-top: 20px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.help-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.faq-list {
  min-width: 0;
}

.faq-list > .section-title {
  margin-bottom: 24px;
}

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

.faq-group h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 16px;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  background-color: var(--color-white);
  overflow: hidden;
}

.faq-item summary {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 44px;
  transition: background-color var(--transition-fast);
}

.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;
  font-weight: 400;
  color: var(--color-accent);
  transition: transform var(--transition-fast);
}

.faq-item[open] summary {
  background-color: var(--color-bg-soft);
}

.faq-item[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
}

.faq-item summary:hover {
  background-color: var(--color-bg-soft);
}

.faq-item p {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
}

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

/* 联系反馈入口 */
.contact-promo {
  max-width: var(--container-width);
  margin: 40px auto 0;
  padding: 0 24px;
}

.promo-card {
  background-color: var(--color-primary);
  border-radius: var(--radius-md);
  padding: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.promo-card h2 {
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 6px;
}

.promo-card p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
}

.promo-link {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-accent);
  background-color: #ffffff;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.promo-link:hover {
  background-color: var(--color-bg-soft);
  color: var(--color-accent-dark);
}

/* ============================================================
   Pages · 反馈建议 (report)
   ============================================================ */
.process-section,
.channel-section,
.principles-section,
.report-guide,
.report-entry {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px;
}

.process-section {
  padding-top: 8px;
}

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

.process-step {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  position: relative;
}

.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: 14px;
  font-weight: 700;
  margin-bottom: 12px;
}

.process-step h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.process-step p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
}

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

.channel-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: box-shadow var(--transition-base);
}

.channel-card:hover {
  box-shadow: var(--shadow-hover);
}

.channel-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-primary);
}

.channel-card p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
  flex: 1;
}

.channel-note {
  font-size: 13px;
  color: var(--color-accent);
  background-color: rgba(200, 85, 46, 0.06);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  line-height: 1.5;
}

.principles-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.principles-list li {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.6;
}

.principles-list strong {
  color: var(--color-primary);
  display: block;
  margin-bottom: 4px;
}

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

.guide-list li {
  flex: 1;
  min-width: 200px;
}

.guide-list a {
  display: block;
  padding: 14px 18px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

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

.entry-methods {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.entry-method {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.entry-method h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

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

.entry-tip {
  margin-top: 20px;
  font-size: 14px;
  color: var(--color-muted);
  background-color: var(--color-bg-soft);
  border-left: 3px solid var(--color-accent);
  padding: 12px 16px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  line-height: 1.6;
}

.report-figure {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 32px;
}

.report-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 5;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.report-figure figcaption {
  font-size: 13px;
  color: var(--color-muted);
  text-align: center;
  padding-top: 8px;
}

/* ============================================================
   Pages · 更新动态 (updates)
   ============================================================ */
.timeline-module,
.status-explanation,
.user-guidance {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px 24px 40px;
}

.timeline-module {
  padding-top: 8px;
}

.timeline-list {
  position: relative;
  padding-left: 32px;
}

.timeline-list::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background-color: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-bottom: 32px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-badge {
  position: absolute;
  left: -32px;
  top: 4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background-color: var(--color-white);
  border: 3px solid var(--color-accent);
}

.timeline-content {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  transition: box-shadow var(--transition-base);
}

.timeline-content:hover {
  box-shadow: var(--shadow-hover);
}

.timeline-content h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.timeline-content p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 4px;
}

.timeline-content p:last-child {
  margin-bottom: 0;
}

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

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

.status-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

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

.guidance-panel {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
}

.guidance-panel > p {
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 16px;
}

.guidance-panel ul {
  margin-bottom: 16px;
}

.guidance-panel ul li {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
  padding: 6px 0 6px 20px;
  position: relative;
}

.guidance-panel ul li::before {
  content: "·";
  position: absolute;
  left: 4px;
  color: var(--color-accent);
  font-weight: 700;
}

.guidance-panel > p:last-child {
  margin-bottom: 0;
}

.guidance-panel a {
  font-weight: 600;
}

.updates-media {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 32px;
}

.updates-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 5;
  object-fit: cover;
  border-radius: var(--radius-md);
}

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

/* ============================================================
   Pages · 404
   ============================================================ */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 48px 24px;
}

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

.error-code {
  font-size: 96px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 16px;
}

.error-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.error-desc {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 8px;
}

.error-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 24px;
  flex-wrap: wrap;
}

/* ============================================================
   Responsive · 响应式
   ============================================================ */

/* 平板及以下 */
@media (max-width: 1024px) {
  .header-inner {
    gap: 16px;
  }

  .nav-list a {
    padding: 8px 10px;
    font-size: 14px;
  }

  .hero-section {
    gap: 32px;
    padding: 40px 24px 48px;
  }

  .hero-content h1 {
    font-size: 34px;
  }

  .layout-shell.sidebar-left {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 24px;
  }

  .layout-shell {
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 24px;
  }
}

/* 手机断点 */
@media (max-width: 768px) {
  /* 工具栏 */
  .toolbar-inner,
  .utility-inner {
    padding: 0 16px;
  }

  .toolbar-intro {
    display: none;
  }

  .toolbar-links {
    width: 100%;
    justify-content: flex-end;
    gap: 16px;
  }

  /* 页头与导航 */
  .header-inner {
    padding: 0 16px;
    min-height: 56px;
    position: relative;
    flex-wrap: wrap;
  }

  .brand-name {
    font-size: 19px;
  }

  .brand-slogan {
    display: none;
  }

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

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 4px 12px rgba(31, 58, 77, 0.1);
    display: block;
    z-index: 99;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px 16px;
    gap: 0;
  }

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

  .nav-list li {
    border-bottom: 1px solid var(--color-border);
  }

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

  .nav-list a {
    padding: 14px 8px;
    font-size: 15px;
    display: block;
  }

  .nav-list a.is-current::after {
    display: none;
  }

  .nav-list a.is-current {
    color: var(--color-accent);
    background-color: var(--color-bg-soft);
  }

  /* 面包屑 */
  .breadcrumb {
    padding: 12px 16px 0;
    font-size: 13px;
  }

  /* 页面标题 */
  .page-header {
    padding: 24px 16px 20px;
  }

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

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

  /* 布局容器 */
  .layout-shell.sidebar-left,
  .layout-shell {
    display: block;
    padding: 0 16px;
  }

  .layout-shell > aside {
    margin-bottom: 24px;
  }

  .layout-shell > aside {
    position: static !important;
  }

  /* 首页 Hero */
  .hero-section {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px 16px 40px;
  }

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

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

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

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

  .hero-figure img {
    aspect-ratio: 16 / 10;
  }

  /* 首页区块 */
  .recent-topics,
  .forum-directory,
  .featured-posts,
  .community-hub,
  .get-started {
    padding: 32px 16px;
  }

  .section-heading h2 {
    font-size: 20px;
  }

  .topic-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 14px 16px;
  }

  .topic-title {
    white-space: normal;
    line-height: 1.5;
  }

  .topic-meta {
    width: 100%;
    justify-content: space-between;
  }

  .featured-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .featured-card-wide {
    grid-column: span 1;
  }

  .featured-card-wide .card-media {
    aspect-ratio: 16 / 9;
  }

  .hub-grid,
  .started-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* 内页通用 */
  .inner-main {
    padding-bottom: 40px;
  }

  /* 讨论分区 */
  .page-forum .forum-group,
  .guide-promo {
    padding-left: 16px;
    padding-right: 16px;
  }

  .content-media-inline {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .content-media-inline img {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
  }

  .forum-table-wrap {
    overflow-x: auto;
  }

  /* 精华内容 */
  .page-featured .filter-sidebar,
  .page-guide .guide-aside,
  .page-rules .rule-toc,
  .page-help .faq-categories {
    position: static;
  }

  .filter-sidebar,
  .guide-aside,
  .rule-toc,
  .faq-categories {
    margin-bottom: 24px;
  }

  .page-featured .featured-grid {
    grid-template-columns: 1fr;
  }

  .page-featured .featured-card-wide {
    grid-column: span 1;
  }

  .related-card {
    margin-bottom: 16px;
  }

  /* 新手指南 */
  .guide-section h2 {
    font-size: 20px;
  }

  .step-item {
    gap: 12px;
  }

  .step-num {
    width: 28px;
    height: 28px;
    font-size: 13px;
  }

  .guide-figure img {
    aspect-ratio: 16 / 9;
  }

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

  /* 社区规则 */
  .rule-section h2 {
    font-size: 20px;
  }

  .rule-figure img {
    aspect-ratio: 16 / 9;
  }

  .report-promo {
    flex-direction: column;
    align-items: flex-start;
  }

  /* 帮助中心 */
  .faq-item summary {
    padding: 14px 16px;
    padding-right: 40px;
    font-size: 14px;
  }

  .faq-item p {
    padding: 0 16px 14px;
  }

  .promo-card {
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
  }

  .promo-link {
    width: 100%;
    justify-content: center;
  }

  /* 反馈建议 */
  .process-section,
  .channel-section,
  .principles-section,
  .report-guide,
  .report-entry {
    padding-left: 16px;
    padding-right: 16px;
  }

  .process-steps,
  .channel-grid,
  .principles-list,
  .entry-methods {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .guide-list {
    flex-direction: column;
  }

  .guide-list li {
    min-width: 0;
  }

  .report-figure {
    padding-left: 16px;
    padding-right: 16px;
  }

  .report-figure img {
    aspect-ratio: 16 / 9;
  }

  /* 更新动态 */
  .timeline-module,
  .status-explanation,
  .user-guidance {
    padding-left: 16px;
    padding-right: 16px;
  }

  .status-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .timeline-list {
    padding-left: 24px;
  }

  .timeline-badge {
    left: -24px;
    width: 18px;
    height: 18px;
  }

  .timeline-content {
    padding: 16px;
  }

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

  .updates-media {
    padding-left: 16px;
    padding-right: 16px;
  }

  .updates-media img {
    aspect-ratio: 16 / 9;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    padding: 32px 16px 24px;
  }

  .brand-col {
    grid-column: span 2;
  }

  /* 相关链接 */
  .related-links {
    padding-left: 16px;
    padding-right: 16px;
    gap: 8px;
  }

  /* 404 */
  .error-code {
    font-size: 72px;
  }

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

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

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

/* 小屏手机 */
@media (max-width: 480px) {
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .brand-col {
    grid-column: span 1;
  }

  .toolbar-links {
    gap: 12px;
  }

  .nav-toggle-text {
    display: none;
  }

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

  .hero-content h1 {
    font-size: 26px;
  }
}