/* ============================================================
   51吃瓜网玩偶姐姐 - 整站样式表
   实验排版风 · 编辑化杂志感 · 中性底色 + 强调色
   ============================================================ */

/* ============================================================
   Base
   ============================================================ */
:root {
  --color-dark: #1a1a1a;
  --color-bg: #f5f5f5;
  --color-accent: #c0392b;
  --color-deep: #2c3e50;
  --color-white: #ffffff;
  --color-text: #2a2a2a;
  --color-muted: #6b6b6b;
  --color-border: #e0e0e0;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
  --container-width: 1200px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --transition: 0.2s ease;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-sans);
  color: var(--color-dark);
  line-height: 1.35;
}

p {
  font-family: var(--font-serif);
}

/* ============================================================
   Layout
   ============================================================ */

/* 全站统一页头 */
.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;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-link {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
  flex-shrink: 0;
}

.brand-name {
  font-family: var(--font-sans);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-dark);
  letter-spacing: 0.02em;
}

.brand-slogan {
  font-size: 0.75rem;
  color: var(--color-muted);
  letter-spacing: 0.08em;
}

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

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

.nav-list li a {
  display: block;
  padding: 8px 18px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-dark);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition), color var(--transition);
}

.nav-list li a:hover {
  color: var(--color-accent);
  background-color: rgba(192, 57, 43, 0.06);
}

.nav-list li a.is-current {
  color: var(--color-accent);
  background-color: rgba(192, 57, 43, 0.08);
  font-weight: 600;
}

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

.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-dark);
  transition: transform var(--transition), opacity var(--transition);
}

/* 全站统一页脚 */
.site-footer {
  background-color: var(--color-dark);
  color: #c9c9c9;
  margin-top: 80px;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 24px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
}

.footer-brand {
  font-family: var(--font-sans);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 8px;
}

.footer-desc {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  line-height: 1.7;
  color: #a8a8a8;
}

.footer-heading {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 12px;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.footer-nav a {
  font-size: 0.88rem;
  color: #a8a8a8;
}

.footer-nav a:hover {
  color: var(--color-white);
}

.copyright {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 16px 24px 24px;
  font-size: 0.8rem;
  color: #7a7a7a;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: left;
}

/* 全站统一主容器 */
.site-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  min-height: 60vh;
}

/* 内页统一骨架 */
.inner-main {
  padding-top: 32px;
  padding-bottom: 48px;
}

/* 面包屑 */
.breadcrumb {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

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

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

.breadcrumb-sep {
  color: #b0b0b0;
}

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

/* 页面标题区 */
.page-header {
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}

.page-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.page-description {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--color-muted);
  max-width: 720px;
}

/* ============================================================
   Components
   ============================================================ */

/* 通用区块标题 */
.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 24px;
  position: relative;
}

.section-title::after {
  content: "";
  display: block;
  width: 40px;
  height: 3px;
  background-color: var(--color-accent);
  margin-top: 8px;
}

/* 链接列表 */
.related-links {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.related-links .section-title,
.related-links .block-heading {
  font-size: 1.2rem;
  margin-bottom: 16px;
}

.related-links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
}

.related-links a {
  font-size: 0.95rem;
  color: var(--color-deep);
  border-bottom: 1px solid transparent;
}

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

/* 图片容器统一约束 */
figure {
  margin: 0;
}

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

/* 按钮 */
.btn-primary {
  display: inline-block;
  padding: 12px 28px;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: background-color var(--transition);
}

.btn-primary:hover {
  background-color: #a93226;
  color: var(--color-white);
}

.btn-secondary {
  display: inline-block;
  padding: 12px 28px;
  background-color: transparent;
  color: var(--color-deep);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid var(--color-deep);
  border-radius: var(--radius-md);
  transition: background-color var(--transition), color var(--transition);
}

.btn-secondary:hover {
  background-color: var(--color-deep);
  color: var(--color-white);
}

/* ============================================================
   Pages - 首页
   ============================================================ */

/* 首屏：左右不对称布局 */
.hero-section {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  padding: 72px 0 56px;
}

.hero-content h1 {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 20px;
}

.hero-lead {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--color-text);
  margin-bottom: 16px;
  max-width: 520px;
}

.hero-method {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--color-muted);
  margin-bottom: 28px;
  max-width: 500px;
}

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

.hero-media {
  background-color: var(--color-deep);
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

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

/* 焦点报道区 */
.focus-area {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

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

.focus-card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}

.focus-card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.focus-media {
  aspect-ratio: 16 / 9;
  background-color: #e8e8e8;
}

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

.focus-body {
  padding: 20px 24px 24px;
}

.focus-name {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.focus-name a {
  color: var(--color-dark);
}

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

.focus-desc {
  font-family: var(--font-serif);
  font-size: 0.92rem;
  color: var(--color-muted);
  margin-bottom: 12px;
}

.focus-date {
  font-size: 0.82rem;
  color: #999;
}

/* 频道导航 */
.channel-nav {
  padding: 40px 0;
  border-top: 1px solid var(--color-border);
}

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

.channel-tag {
  display: inline-block;
  padding: 10px 22px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-deep);
  transition: background-color var(--transition), color var(--transition), border-color var(--transition);
}

.channel-tag:hover {
  background-color: var(--color-deep);
  border-color: var(--color-deep);
  color: var(--color-white);
}

/* 最新一期列表 */
.latest-list {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

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

.latest-item {
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px 24px;
  align-items: baseline;
}

.latest-item:first-child {
  padding-top: 0;
}

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

.item-title {
  font-size: 1.05rem;
  font-weight: 600;
  grid-column: 1;
}

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

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

.item-summary {
  font-family: var(--font-serif);
  font-size: 0.92rem;
  color: var(--color-muted);
  grid-column: 1;
  max-width: 680px;
}

.item-date {
  font-size: 0.85rem;
  color: #999;
  grid-column: 2;
  grid-row: 1;
  white-space: nowrap;
}

/* 专题策划区 */
.topic-area {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.topic-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

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

.topic-card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.topic-media {
  aspect-ratio: 16 / 9;
  background-color: #e8e8e8;
}

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

.topic-body {
  padding: 20px 24px 24px;
}

.topic-name {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.topic-name a {
  color: var(--color-dark);
}

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

.topic-desc {
  font-family: var(--font-serif);
  font-size: 0.92rem;
  color: var(--color-muted);
}

/* 编辑推荐 */
.editor-picks {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.picks-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.pick-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 16px 20px;
  background-color: var(--color-white);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-sm);
}

.pick-title {
  font-size: 1rem;
  font-weight: 600;
}

.pick-title a {
  color: var(--color-dark);
}

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

.pick-reason {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  color: var(--color-muted);
}

/* 信息来源 */
.source-info {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.source-text {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--color-muted);
  max-width: 760px;
  margin-bottom: 12px;
}

.source-text:last-child {
  margin-bottom: 0;
}

/* ============================================================
   Pages - 内容专题
   ============================================================ */

.layout-shell {
  display: block;
}

.page-layout.sidebar-right {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 48px;
  align-items: start;
}

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

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

.sidebar .section-title {
  font-size: 1.1rem;
  margin-bottom: 16px;
}

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

.filter-list a {
  display: block;
  padding: 8px 12px;
  font-size: 0.92rem;
  color: var(--color-deep);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition), color var(--transition);
}

.filter-list a:hover {
  background-color: rgba(44, 62, 80, 0.06);
  color: var(--color-accent);
}

.sidebar-note {
  font-family: var(--font-serif);
  font-size: 0.88rem;
  color: var(--color-muted);
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.sidebar-note a {
  color: var(--color-accent);
}

/* 专题页卡片 */
.topic-card .topic-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}

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

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

.topic-summary {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  color: var(--color-muted);
}

.topic-meta {
  font-size: 0.8rem;
  color: #999;
  margin-top: 8px;
}

/* 相关阅读入口 */
.related-entry {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

/* ============================================================
   Pages - 阅读指南
   ============================================================ */

.guide-hero-figure {
  aspect-ratio: 21 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-deep);
  margin-bottom: 48px;
}

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

.guide-section {
  margin-bottom: 48px;
}

.guide-section h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.guide-section p {
  font-family: var(--font-serif);
  font-size: 0.98rem;
  margin-bottom: 16px;
  max-width: 760px;
}

.guide-list {
  margin: 16px 0 20px;
  padding-left: 0;
}

.guide-list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 10px;
  font-family: var(--font-serif);
  font-size: 0.95rem;
}

.guide-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 8px;
  height: 8px;
  background-color: var(--color-accent);
  border-radius: 50%;
}

.guide-list strong {
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--color-dark);
}

.guide-steps {
  counter-reset: guide-step;
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin: 20px 0;
}

.guide-steps li {
  position: relative;
  padding: 20px 24px 20px 64px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  counter-increment: guide-step;
}

.guide-steps li::before {
  content: counter(guide-step);
  position: absolute;
  left: 20px;
  top: 20px;
  width: 32px;
  height: 32px;
  background-color: var(--color-deep);
  color: var(--color-white);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.guide-steps h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.guide-steps p {
  font-family: var(--font-serif);
  font-size: 0.92rem;
  color: var(--color-muted);
  margin-bottom: 0;
}

/* ============================================================
   Pages - 往期目录
   ============================================================ */

.archive-section {
  margin-bottom: 48px;
}

.archive-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 48px;
  align-items: start;
}

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

.archive-main h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.section-intro {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--color-muted);
  margin-bottom: 28px;
}

.timeline {
  position: relative;
  padding-left: 24px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background-color: var(--color-border);
}

.timeline-item {
  position: relative;
  padding: 0 0 28px 24px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -29px;
  top: 6px;
  width: 10px;
  height: 10px;
  background-color: var(--color-accent);
  border: 2px solid var(--color-bg);
  border-radius: 50%;
}

.timeline-meta {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 4px;
}

.timeline-date {
  font-size: 0.82rem;
  color: var(--color-muted);
  font-family: var(--font-sans);
}

.timeline-cat {
  font-size: 0.78rem;
  color: var(--color-accent);
  background-color: rgba(192, 57, 43, 0.08);
  padding: 2px 10px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
}

.timeline-body h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.timeline-body h3 a {
  color: var(--color-dark);
}

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

.timeline-body p {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  color: var(--color-muted);
}

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

.archive-sidebar h2 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.sidebar-desc {
  font-family: var(--font-serif);
  font-size: 0.88rem;
  color: var(--color-muted);
  margin-bottom: 16px;
}

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

.year-list a {
  display: block;
  padding: 8px 12px;
  font-size: 0.92rem;
  color: var(--color-deep);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition), color var(--transition);
}

.year-list a:hover {
  background-color: rgba(44, 62, 80, 0.06);
  color: var(--color-accent);
}

.content-media-inline {
  aspect-ratio: 21 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-deep);
  margin: 32px 0;
}

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

.content-media-inline figcaption {
  padding: 10px 16px;
  font-family: var(--font-serif);
  font-size: 0.85rem;
  color: var(--color-muted);
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
}

/* ============================================================
   Pages - 深度解读
   ============================================================ */

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 48px;
  align-items: start;
}

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

.content-block {
  margin-bottom: 40px;
}

.block-heading {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.content-block p {
  font-family: var(--font-serif);
  font-size: 0.98rem;
  margin-bottom: 16px;
  max-width: 720px;
}

.article-media {
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-deep);
  margin: 24px 0;
}

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

.article-media figcaption {
  padding: 10px 16px;
  font-family: var(--font-serif);
  font-size: 0.85rem;
  color: var(--color-muted);
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
}

.node-list {
  margin: 16px 0 20px;
}

.node-list li {
  position: relative;
  padding: 12px 16px 12px 20px;
  margin-bottom: 8px;
  background-color: var(--color-white);
  border-left: 3px solid var(--color-deep);
  border-radius: var(--radius-sm);
  font-family: var(--font-serif);
  font-size: 0.95rem;
}

.node-list li:nth-child(even) {
  border-left-color: var(--color-accent);
}

.node-list strong {
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--color-dark);
  margin-right: 8px;
}

.article-sidebar {
  position: sticky;
  top: 88px;
}

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

.sidebar-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.method-steps {
  counter-reset: method-step;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.method-steps li {
  position: relative;
  padding-left: 36px;
  font-family: var(--font-serif);
  font-size: 0.9rem;
  counter-increment: method-step;
}

.method-steps li::before {
  content: counter(method-step);
  position: absolute;
  left: 0;
  top: 0;
  width: 24px;
  height: 24px;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sidebar-note {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.related-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.related-list a {
  display: block;
  padding: 8px 0;
  font-size: 0.95rem;
  color: var(--color-deep);
  border-bottom: 1px solid var(--color-border);
}

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

/* ============================================================
   Pages - 404
   ============================================================ */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 80px 24px;
}

.error-content {
  text-align: center;
  max-width: 480px;
}

.error-code {
  font-size: 5rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 16px;
}

.error-content h1 {
  font-size: 1.6rem;
  margin-bottom: 12px;
}

.error-desc {
  font-family: var(--font-serif);
  font-size: 0.98rem;
  color: var(--color-muted);
  margin-bottom: 28px;
}

.error-back {
  display: inline-block;
  padding: 12px 32px;
  background-color: var(--color-deep);
  color: var(--color-white);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: background-color var(--transition);
}

.error-back:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 1024px) {
  .page-layout.sidebar-right {
    grid-template-columns: minmax(0, 1fr) 240px;
    gap: 32px;
  }

  .archive-layout {
    grid-template-columns: minmax(0, 1fr) 240px;
    gap: 32px;
  }

  .article-layout {
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: auto;
    min-height: 64px;
    padding: 12px 16px;
    flex-wrap: wrap;
    gap: 12px;
  }

  .brand-name {
    font-size: 1.15rem;
  }

  .nav-toggle {
    display: flex;
    margin-left: auto;
  }

  .site-nav {
    flex-basis: 100%;
    order: 3;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    width: 100%;
    gap: 0;
    padding: 8px 0;
    border-top: 1px solid var(--color-border);
  }

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

  .nav-list li a {
    padding: 12px 8px;
    font-size: 1rem;
    border-radius: var(--radius-sm);
  }

  .site-main {
    padding: 0 16px;
  }

  .inner-main {
    padding-top: 24px;
    padding-bottom: 32px;
  }

  .page-title {
    font-size: 1.6rem;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 16px 16px;
  }

  .copyright {
    padding: 12px 16px 20px;
  }

  /* 首页 */
  .hero-section {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 48px 0 40px;
  }

  .hero-content h1 {
    font-size: 1.8rem;
  }

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

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

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

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

  .latest-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .item-date {
    grid-column: 1;
    grid-row: auto;
  }

  /* 内页布局 */
  .page-layout.sidebar-right {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .sidebar {
    order: 2;
  }

  .archive-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .archive-sidebar {
    order: 2;
  }

  .article-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .article-sidebar {
    position: static;
    order: 2;
  }

  .guide-hero-figure {
    aspect-ratio: 16 / 9;
    margin-bottom: 32px;
  }

  .content-media-inline {
    aspect-ratio: 16 / 9;
  }

  .timeline {
    padding-left: 16px;
  }

  .timeline-item {
    padding-left: 16px;
  }

  .timeline-item::before {
    left: -21px;
  }
}

@media (max-width: 390px) {
  .header-inner {
    padding: 10px 12px;
  }

  .brand-slogan {
    display: none;
  }

  .site-main {
    padding: 0 12px;
  }

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

  .hero-content h1 {
    font-size: 1.6rem;
  }

  .btn-primary,
  .btn-secondary {
    padding: 10px 20px;
    font-size: 0.9rem;
  }

  .focus-body,
  .topic-body {
    padding: 16px 16px 20px;
  }

  .guide-steps li {
    padding: 16px 16px 16px 56px;
  }

  .guide-steps li::before {
    left: 16px;
    top: 16px;
    width: 28px;
    height: 28px;
  }

  .sidebar,
  .archive-sidebar,
  .sidebar-card {
    padding: 16px;
  }

  .node-list li {
    padding: 10px 12px 10px 14px;
  }

  .error-code {
    font-size: 4rem;
  }
}

/* ============================================================
   动效增强（不影响初始可见性）
   ============================================================ */

@media (prefers-reduced-motion: no-preference) {
  .focus-card,
  .topic-card {
    transition: box-shadow var(--transition), transform var(--transition);
  }

  .focus-card:hover,
  .topic-card:hover {
    transform: translateY(-2px);
  }

  .channel-tag {
    transition: background-color var(--transition), color var(--transition),
      border-color var(--transition), transform var(--transition);
  }

  .channel-tag:hover {
    transform: translateY(-1px);
  }

  .timeline-item {
    transition: background-color var(--transition);
  }

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