/* ==========================================================================
   base — 基础样式与全站视觉骨架
   ========================================================================== */

:root {
  --color-primary: #1a1a2e;
  --color-accent: #e94560;
  --color-secondary: #0f3460;
  --color-bg: #f5f5f5;
  --color-white: #ffffff;
  --color-text: #2d2d3a;
  --color-text-light: #6b6b7d;
  --color-border: #e3e3ea;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC",
    "Microsoft YaHei", "Segoe UI", sans-serif;
  --container-width: 1200px;
  --header-height: 68px;
  --radius-sm: 4px;
  --radius-md: 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: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
}

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

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

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.3;
}

h1 {
  font-size: 32px;
}

h2 {
  font-size: 24px;
  margin-bottom: 20px;
}

h3 {
  font-size: 18px;
}

p {
  margin-bottom: 12px;
}

time {
  color: var(--color-text-light);
  font-size: 14px;
}

/* ==========================================================================
   layout — 全站布局骨架
   ========================================================================== */

.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--color-bg);
}

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

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

.header-shell {
  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 {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.5px;
}

.brand-slogan {
  font-size: 13px;
  color: var(--color-text-light);
}

/* 主导航 */
.site-nav .nav-list {
  display: flex;
  gap: 4px;
  align-items: center;
}

.site-nav .nav-list a {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
}

.site-nav .nav-list a:hover {
  color: var(--color-accent);
  background-color: rgba(233, 69, 96, 0.06);
}

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

/* 汉堡按钮（桌面隐藏） */
.nav-toggle {
  display: none;
  background: none;
  border: 0;
  width: 44px;
  height: 44px;
  padding: 10px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle-icon {
  position: relative;
}

.nav-toggle-icon::before {
  position: absolute;
  top: -7px;
  left: 0;
}

.nav-toggle-icon::after {
  position: absolute;
  top: 7px;
  left: 0;
}

/* 页脚 */
.site-footer {
  background-color: var(--color-primary);
  color: #c8c8d4;
  margin-top: 48px;
}

.footer-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 24px;
}

.footer-brand {
  margin-bottom: 32px;
}

.footer-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 8px;
}

.footer-desc {
  font-size: 14px;
  color: #9a9ab0;
  max-width: 420px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.footer-group h3 {
  font-size: 15px;
  color: var(--color-white);
  margin-bottom: 14px;
  font-weight: 600;
}

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

.footer-group ul a {
  color: #b0b0c4;
  font-size: 14px;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-cta {
  display: inline-block;
  padding: 10px 20px;
  background-color: var(--color-accent);
  color: var(--color-white);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  transition: background-color var(--transition);
}

.footer-cta:hover {
  background-color: #d63850;
  color: var(--color-white);
}

.copyright {
  font-size: 13px;
  color: #8a8aa0;
  margin: 0;
}

/* 内页统一骨架 */
.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px 24px 48px;
}

.breadcrumb {
  font-size: 14px;
  margin-bottom: 20px;
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  gap: 6px;
}

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

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

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

.breadcrumb-sep {
  color: #b0b0c0;
}

.page-header {
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}

.page-title {
  font-size: 30px;
  margin-bottom: 8px;
}

.page-description {
  font-size: 16px;
  color: var(--color-text-light);
  max-width: 720px;
  margin-bottom: 0;
}

/* ==========================================================================
   components — 通用组件
   ========================================================================== */

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition), color var(--transition),
    border-color var(--transition);
  min-height: 44px;
}

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

.btn-primary:hover {
  background-color: #d63850;
  border-color: #d63850;
  color: var(--color-white);
}

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

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

/* 通用节标题 */
.section-title {
  font-size: 22px;
  margin-bottom: 20px;
  position: relative;
  padding-left: 14px;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 4px;
  height: 20px;
  background-color: var(--color-accent);
  border-radius: 2px;
}

/* 图片容器约束 */
figure {
  margin: 0;
}

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

/* 通用图片尺寸类 */
.hero-media,
.topic-media,
.insight-media,
.channel-thumb,
.content-media,
.topic-card figure,
.topic-card figure img {
  display: block;
}

/* 相关页面链接 */
.inline-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}

.inline-links a {
  font-size: 14px;
  font-weight: 500;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}

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

/* ==========================================================================
   pages — 首页
   ========================================================================== */

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

/* 首屏焦点区 */
.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
  padding: 48px 0;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hero-copy h1 {
  font-size: 36px;
  line-height: 1.3;
}

.hero-lead {
  font-size: 17px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 0;
}

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

.hero-media {
  width: 100%;
  height: 0;
  padding-bottom: 68%;
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-border);
}

.hero-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 频道分类导航带 */
.channels-nav {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

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

.tag {
  display: inline-block;
  padding: 10px 20px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-secondary);
  transition: all var(--transition);
}

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

/* 最新资讯列表 */
.latest-news {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

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

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

.news-item:hover {
  box-shadow: 0 4px 16px rgba(26, 26, 46, 0.08);
  border-color: #d0d0dc;
}

.news-item h3 {
  margin-bottom: 6px;
}

.news-item h3 a {
  color: var(--color-primary);
}

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

.news-summary {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 8px;
  line-height: 1.6;
}

/* 专题策划入口 */
.topics-entry {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

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

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

.topic-card:hover {
  box-shadow: 0 6px 20px rgba(26, 26, 46, 0.1);
  transform: translateY(-2px);
}

.topic-card figure {
  width: 100%;
  height: 0;
  padding-bottom: 56%;
  position: relative;
  overflow: hidden;
}

.topic-card figure img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.topic-card h3 {
  padding: 16px 20px 4px;
  font-size: 18px;
  color: var(--color-primary);
}

.topic-card p {
  padding: 0 20px 20px;
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 0;
}

/* 编辑推荐 */
.editors-pick {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

.pick-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.pick-item {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 16px;
  align-items: start;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}

.pick-tag {
  display: inline-block;
  background-color: rgba(233, 69, 96, 0.08);
  color: var(--color-accent);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  text-align: center;
}

.pick-item a {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  display: block;
  margin-bottom: 4px;
}

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

.pick-reason {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 0;
  grid-column: 2;
}

/* 信息来源与反馈说明 */
.source-feedback {
  padding: 32px 0 48px;
  border-top: 1px solid var(--color-border);
}

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

.source-body p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 8px;
}

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

/* ==========================================================================
   pages — 频道分类页
   ========================================================================== */

.channel-list {
  margin-bottom: 40px;
}

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

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

.channel-card:hover {
  box-shadow: 0 4px 16px rgba(26, 26, 46, 0.08);
}

.channel-thumb {
  width: 100%;
  height: 0;
  padding-bottom: 48%;
  position: relative;
  overflow: hidden;
}

.channel-thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.channel-card-body {
  padding: 20px 24px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.channel-name {
  font-size: 20px;
  margin-bottom: 8px;
}

.channel-desc {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 16px;
  line-height: 1.6;
}

.channel-articles li {
  margin-bottom: 8px;
  position: relative;
  padding-left: 16px;
}

.channel-articles li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.channel-articles a {
  font-size: 14px;
  color: var(--color-secondary);
}

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

/* 频道简介 */
.channel-brief {
  margin-bottom: 40px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
}

.channel-brief p {
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 10px;
}

/* 代表文章精选 */
.featured-articles {
  margin-bottom: 40px;
}

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

.featured-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: box-shadow var(--transition);
}

.featured-item:hover {
  box-shadow: 0 4px 16px rgba(26, 26, 46, 0.08);
}

.featured-item h3 {
  margin-bottom: 8px;
}

.featured-item h3 a {
  color: var(--color-primary);
  font-size: 17px;
}

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

.featured-item p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 0;
  line-height: 1.6;
}

/* 来源说明 */
.source-note {
  margin-bottom: 32px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
}

.source-note p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 6px;
}

/* ==========================================================================
   pages — 内容专题页
   ========================================================================== */

.topic-list {
  margin-bottom: 40px;
}

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

.topic-grid .topic-card {
  display: flex;
  flex-direction: column;
}

.topic-media {
  width: 100%;
  height: 0;
  padding-bottom: 56%;
  position: relative;
  overflow: hidden;
}

.topic-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.topic-content {
  padding: 20px 24px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.topic-title {
  font-size: 20px;
  margin-bottom: 10px;
}

.topic-summary {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 16px;
  flex: 1;
}

.topic-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  border-bottom: 2px solid transparent;
  align-self: flex-start;
  padding: 4px 0;
}

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

/* 专题摘要列表 */
.topic-summaries {
  margin-bottom: 40px;
}

.summary-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.summary-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: start;
  transition: border-color var(--transition);
}

.summary-item:hover {
  border-color: #c8c8d8;
}

.summary-title {
  font-size: 17px;
  margin-bottom: 6px;
  grid-column: 1;
}

.summary-text {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
  grid-column: 1;
  margin-bottom: 0;
}

.summary-link {
  grid-column: 2;
  grid-row: 1 / span 2;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  white-space: nowrap;
  align-self: center;
}

/* 延伸阅读 */
.extended-reading {
  margin-bottom: 40px;
}

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

.reading-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
}

.reading-title {
  font-size: 16px;
  margin-bottom: 6px;
}

.reading-meta {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 8px;
}

.reading-excerpt {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 12px;
  flex: 1;
}

.reading-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
}

/* ==========================================================================
   pages — 深度解读页
   ========================================================================== */

.insight-list {
  margin-bottom: 40px;
}

.insight-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 40px;
}

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

.insight-card:hover {
  box-shadow: 0 4px 16px rgba(26, 26, 46, 0.08);
}

.insight-media {
  width: 100%;
  height: 0;
  padding-bottom: 52%;
  position: relative;
  overflow: hidden;
}

.insight-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.insight-content {
  padding: 20px 24px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.insight-content h3 {
  font-size: 19px;
  margin-bottom: 6px;
}

.insight-date {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 10px;
}

.insight-excerpt {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 16px;
  flex: 1;
}

.read-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  align-self: flex-start;
  border-bottom: 2px solid transparent;
  padding: 2px 0;
}

.read-more:hover {
  border-bottom-color: var(--color-accent);
}

/* 文章正文 */
.insight-article {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 32px;
  margin-bottom: 40px;
}

.article-body p {
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 16px;
  color: var(--color-text);
}

/* 相关文章 */
.related-articles {
  margin-bottom: 40px;
}

.related-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.related-list li {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  transition: border-color var(--transition);
}

.related-list li:hover {
  border-color: #c0c0d0;
}

.related-list a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-primary);
  line-height: 1.5;
  display: block;
}

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

/* ==========================================================================
   pages — 实用指南页
   ========================================================================== */

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

.content-media {
  width: 100%;
  height: 0;
  padding-bottom: 42%;
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  margin-bottom: 24px;
  background-color: var(--color-border);
}

.content-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.content-media figcaption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: rgba(26, 26, 46, 0.72);
  color: var(--color-white);
  font-size: 13px;
  padding: 8px 16px;
}

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

.step-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 16px;
  align-items: start;
}

.step-content h3 {
  font-size: 18px;
  margin-bottom: 6px;
}

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

.step-content p.step-example {
  font-size: 13px;
  color: var(--color-text-light);
  background-color: var(--color-bg);
  border-left: 3px solid var(--color-accent);
  padding: 8px 12px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-top: 8px;
}

/* 注意事项 */
.guide-notes {
  margin-bottom: 40px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
}

.notes-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.notes-list li {
  font-size: 15px;
  color: var(--color-text);
  padding-left: 24px;
  position: relative;
  line-height: 1.6;
}

.notes-list li::before {
  content: "!";
  position: absolute;
  left: 0;
  top: 2px;
  width: 16px;
  height: 16px;
  background-color: var(--color-accent);
  color: var(--color-white);
  border-radius: 50%;
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 相关资源 */
.guide-resources {
  margin-bottom: 40px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
}

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

.resource-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 24px;
  margin-bottom: 16px;
}

.resource-links li {
  position: relative;
  padding-left: 18px;
}

.resource-links li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.resource-links a {
  font-size: 14px;
  color: var(--color-secondary);
  line-height: 1.5;
}

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

.guide-resources > p:last-child {
  margin-bottom: 0;
  font-size: 13px;
  color: var(--color-text-light);
}

/* ==========================================================================
   pages — 404 错误页
   ========================================================================== */

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

.error-panel {
  max-width: 560px;
  text-align: center;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 48px 40px;
}

.error-code {
  font-size: 72px;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.1;
  margin-bottom: 16px;
}

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

.error-desc {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 24px;
  line-height: 1.7;
}

.error-home-link {
  display: inline-block;
  padding: 12px 28px;
  background-color: var(--color-accent);
  color: var(--color-white);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  margin-bottom: 32px;
  min-height: 44px;
  line-height: 1.4;
}

.error-home-link:hover {
  background-color: #d63850;
  color: var(--color-white);
}

.error-suggest {
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
}

.error-suggest p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.error-suggest ul {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

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

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

/* ==========================================================================
   responsive — 响应式
   ========================================================================== */

@media (max-width: 992px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero-media {
    order: -1;
    padding-bottom: 52%;
  }

  .featured-grid,
  .reading-list,
  .related-list {
    grid-template-columns: 1fr 1fr;
  }

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

@media (max-width: 768px) {
  .header-shell {
    flex-wrap: wrap;
    height: auto;
    padding: 12px 16px;
    position: relative;
  }

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

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

  .site-nav .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 0 4px;
  }

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

  .site-nav .nav-list a {
    padding: 14px 12px;
    border-bottom: 1px solid var(--color-border);
    font-size: 16px;
  }

  .brand-slogan {
    display: none;
  }

  .inner-main {
    padding: 20px 16px 40px;
  }

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

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

  .hero {
    padding: 32px 0;
  }

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

  .topic-cards,
  .channel-grid,
  .topic-grid,
  .insight-grid {
    grid-template-columns: 1fr;
  }

  .channel-card {
    flex-direction: column;
  }

  .channel-thumb {
    padding-bottom: 40%;
  }

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

  .pick-reason {
    grid-column: 1;
  }

  .summary-item {
    grid-template-columns: 1fr;
  }

  .summary-link {
    grid-column: 1;
    grid-row: auto;
  }

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

  .step-item .step-number {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-accent);
  }

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

  .footer-shell {
    padding: 32px 16px 20px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .error-panel {
    padding: 32px 24px;
  }
}

@media (max-width: 480px) {
  .featured-grid,
  .reading-list,
  .related-list {
    grid-template-columns: 1fr;
  }

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

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

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

  .channel-tags {
    gap: 8px;
  }

  .tag {
    padding: 8px 14px;
    font-size: 14px;
  }

  .news-item {
    padding: 16px 18px;
  }

  .insight-article {
    padding: 20px 18px;
  }

  .source-body,
  .channel-brief,
  .source-note,
  .guide-notes,
  .guide-resources {
    padding: 16px 18px;
  }

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