/* ==========================================================================
   base
   ========================================================================== */

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

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

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
    sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #333333;
  background-color: #ffffff;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 0.5em;
  font-weight: 700;
  line-height: 1.3;
  color: #333333;
}

p {
  margin: 0 0 1em;
}

a {
  color: #1a73e8;
  text-decoration: none;
}

a:hover {
  color: #1558b0;
  text-decoration: underline;
}

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

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

figure {
  margin: 0;
}

button {
  font-family: inherit;
  cursor: pointer;
}

/* ==========================================================================
   layout
   ========================================================================== */

.site-header {
  background-color: #ffffff;
  border-bottom: 1px solid #e9ecef;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 20px;
}

.logo {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  flex-shrink: 0;
}

.logo-brand {
  font-size: 24px;
  font-weight: 800;
  color: #1a73e8;
  letter-spacing: 0.5px;
}

.logo-slogan {
  font-size: 12px;
  color: #6c757d;
}

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

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

.nav-list li {
  margin: 0;
}

.nav-list a {
  display: block;
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 15px;
  color: #333333;
  font-weight: 500;
}

.nav-list a:hover {
  color: #1a73e8;
  background-color: #f8f9fa;
  text-decoration: none;
}

.nav-list a.is-current {
  color: #1a73e8;
  background-color: #e8f0fe;
  font-weight: 600;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid #e9ecef;
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 14px;
  color: #333333;
}

.nav-toggle-label {
  display: inline-block;
}

.site-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}

.page-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px 48px;
}

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 32px;
  align-items: start;
}

.inner-main {
  min-width: 0;
  padding: 32px 0 0;
}

.sidebar {
  min-width: 0;
  padding-top: 32px;
}

.site-footer {
  background-color: #f8f9fa;
  border-top: 1px solid #e9ecef;
  margin-top: 48px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px 24px;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 32px;
}

.footer-brand p {
  margin-bottom: 8px;
  color: #6c757d;
  font-size: 14px;
}

.footer-brand strong {
  display: block;
  font-size: 20px;
  color: #333333;
  margin-bottom: 4px;
}

.footer-links h4 {
  font-size: 15px;
  margin-bottom: 12px;
  color: #333333;
}

.footer-links ul li {
  margin-bottom: 6px;
}

.footer-links ul li a {
  font-size: 14px;
  color: #6c757d;
}

.footer-links ul li a:hover {
  color: #1a73e8;
}

.footer-meta {
  font-size: 13px;
  color: #6c757d;
}

.footer-meta p {
  margin-bottom: 4px;
}

/* ==========================================================================
   components
   ========================================================================== */

/* 面包屑 */

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  font-size: 14px;
  margin-bottom: 20px;
  color: #6c757d;
}

.breadcrumb a {
  color: #1a73e8;
}

.breadcrumb-sep {
  margin: 0 8px;
  color: #adb5bd;
}

.breadcrumb-current {
  color: #6c757d;
}

/* 页面标题区 */

.page-header {
  margin-bottom: 32px;
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  color: #333333;
  margin-bottom: 8px;
}

.page-description {
  font-size: 16px;
  color: #6c757d;
  max-width: 720px;
}

/* 区块标题 */

.section-title {
  font-size: 24px;
  font-weight: 700;
  color: #333333;
  margin-bottom: 20px;
  position: relative;
  padding-left: 14px;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  border-radius: 2px;
  background-color: #1a73e8;
}

/* 首页焦点报道 */

.focus-report {
  margin-bottom: 40px;
}

.focus-card {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 24px;
  background-color: #f8f9fa;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #e9ecef;
}

.focus-media {
  position: relative;
  min-height: 320px;
}

.focus-media img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.focus-content {
  padding: 32px 32px 32px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.focus-content h3 {
  font-size: 26px;
  line-height: 1.35;
  margin-bottom: 12px;
}

.focus-content p {
  color: #6c757d;
  font-size: 15px;
  margin-bottom: 20px;
}

.focus-content > a {
  align-self: flex-start;
  font-weight: 600;
  font-size: 15px;
}

/* 频道标签条 */

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

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

.channel-tags .tag {
  display: inline-block;
  padding: 8px 18px;
  background-color: #f8f9fa;
  border: 1px solid #e9ecef;
  border-radius: 999px;
  font-size: 14px;
  color: #333333;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.channel-tags .tag:hover {
  background-color: #e8f0fe;
  border-color: #1a73e8;
  color: #1a73e8;
  text-decoration: none;
}

/* 最新资讯 */

.latest-news {
  margin-bottom: 40px;
}

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

.news-item {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid #e9ecef;
  align-items: baseline;
}

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

.news-date {
  font-size: 13px;
  color: #6c757d;
  white-space: nowrap;
}

.news-item h3 {
  margin-bottom: 4px;
  font-size: 17px;
}

.news-item h3 a {
  color: #333333;
}

.news-item h3 a:hover {
  color: #1a73e8;
}

.news-item p {
  font-size: 14px;
  color: #6c757d;
  margin-bottom: 0;
  grid-column: 2;
}

/* 专题推荐 */

.topics-recommend {
  margin-bottom: 40px;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.topic-card {
  background-color: #ffffff;
  border: 1px solid #e9ecef;
  border-radius: 8px;
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

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

.topic-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.topic-card h3 {
  padding: 16px 20px 0;
  font-size: 18px;
  margin-bottom: 6px;
}

.topic-card p {
  padding: 0 20px;
  font-size: 14px;
  color: #6c757d;
  margin-bottom: 12px;
}

.topic-card a {
  display: inline-block;
  padding: 0 20px 16px;
  font-size: 14px;
  font-weight: 600;
}

/* 实用指南入口 */

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

.guide-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.guide-card {
  background-color: #f8f9fa;
  border: 1px solid #e9ecef;
  border-radius: 8px;
  overflow: hidden;
  display: grid;
  grid-template-columns: 140px 1fr;
  transition: box-shadow 0.2s ease;
}

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

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

.guide-card h3 {
  padding: 20px 20px 0;
  font-size: 17px;
  margin-bottom: 6px;
}

.guide-card p {
  padding: 0 20px;
  font-size: 14px;
  color: #6c757d;
  margin-bottom: 12px;
}

.guide-card a {
  display: inline-block;
  padding: 0 20px 20px;
  font-size: 14px;
  font-weight: 600;
}

/* 编辑推荐 */

.editor-picks {
  margin-bottom: 40px;
}

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

.pick-item {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 16px;
  padding: 16px;
  background-color: #f8f9fa;
  border-radius: 8px;
  border: 1px solid #e9ecef;
  align-items: baseline;
}

.pick-badge {
  display: inline-block;
  background-color: #1a73e8;
  color: #ffffff;
  font-size: 13px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 4px;
  text-align: center;
  justify-self: start;
}

.pick-item h3 {
  margin-bottom: 4px;
  font-size: 16px;
}

.pick-item h3 a {
  color: #333333;
}

.pick-item h3 a:hover {
  color: #1a73e8;
}

.pick-item p {
  font-size: 14px;
  color: #6c757d;
  margin-bottom: 0;
  grid-column: 2;
}

/* FAQ 与反馈入口（首页） */

.faq-feedback {
  margin-bottom: 24px;
}

.faq-feedback-content {
  background-color: #f8f9fa;
  border: 1px solid #e9ecef;
  border-radius: 8px;
  padding: 24px;
}

.faq-feedback-content p {
  margin-bottom: 16px;
  font-size: 15px;
  color: #6c757d;
}

.faq-feedback-content a {
  font-weight: 600;
}

.btn-feedback {
  display: inline-block;
  background-color: #1a73e8;
  color: #ffffff;
  padding: 10px 24px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  transition: background-color 0.2s ease;
}

.btn-feedback:hover {
  background-color: #1558b0;
  color: #ffffff;
  text-decoration: none;
}

/* ==========================================================================
   内页通用组件
   ========================================================================== */

/* 频道分类页 */

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

.channel-grid h2,
.channel-preview h2,
.channel-note h2,
.topic-list h2,
.topic-note h2,
.guide-list h2,
.guide-detail h2,
.faq-section h2,
.feedback-entry h2,
.analysis-list h2,
.analysis-frameworks h2,
.related-reading h2 {
  font-size: 24px;
  margin-bottom: 20px;
}

.channel-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}

.channel-card {
  background-color: #ffffff;
  border: 1px solid #e9ecef;
  border-radius: 8px;
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

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

.channel-media {
  position: relative;
  height: 140px;
}

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

.channel-body {
  padding: 16px 16px 20px;
}

.channel-body h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.channel-body p {
  font-size: 14px;
  color: #6c757d;
  margin-bottom: 10px;
}

.channel-body a {
  font-size: 14px;
  font-weight: 600;
}

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

.preview-group {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid #e9ecef;
}

.preview-group:last-child {
  border-bottom: none;
}

.preview-group h3 {
  font-size: 17px;
  margin-bottom: 10px;
  color: #333333;
}

.preview-list li {
  padding: 6px 0;
  border-bottom: 1px dashed #e9ecef;
}

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

.preview-list li a {
  font-size: 15px;
  color: #333333;
}

.preview-list li a:hover {
  color: #1a73e8;
}

.channel-note {
  background-color: #f8f9fa;
  border: 1px solid #e9ecef;
  border-radius: 8px;
  padding: 24px;
}

.channel-note p {
  font-size: 15px;
  color: #6c757d;
  margin-bottom: 8px;
}

/* 专题页 */

.topic-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

.topic-list h2 {
  grid-column: 1 / -1;
  margin-bottom: 0;
}

.topic-card {
  background-color: #ffffff;
  border: 1px solid #e9ecef;
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.2s ease;
}

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

.topic-cover {
  position: relative;
  height: 200px;
}

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

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

.topic-content h3 {
  font-size: 19px;
  margin-bottom: 8px;
}

.topic-content p {
  font-size: 14px;
  color: #6c757d;
  margin-bottom: 16px;
}

.topic-links {
  margin-top: auto;
  border-top: 1px solid #e9ecef;
  padding-top: 12px;
}

.topic-links li {
  padding: 4px 0;
}

.topic-links li a {
  font-size: 14px;
  color: #333333;
}

.topic-links li a:hover {
  color: #1a73e8;
}

.topic-note {
  background-color: #f8f9fa;
  border: 1px solid #e9ecef;
  border-radius: 8px;
  padding: 24px;
  margin-top: 40px;
}

.topic-note p {
  font-size: 15px;
  color: #6c757d;
  margin-bottom: 8px;
}

/* 指南页 */

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

.content-media {
  margin-bottom: 24px;
  border-radius: 8px;
  overflow: hidden;
}

.content-media-inline {
  max-width: 720px;
}

.content-media-inline img {
  width: 100%;
  height: auto;
  max-height: 360px;
  object-fit: cover;
}

.content-media-inline figcaption {
  padding: 10px 14px;
  background-color: #f8f9fa;
  font-size: 13px;
  color: #6c757d;
  border: 1px solid #e9ecef;
  border-top: none;
  border-radius: 0 0 8px 8px;
}

.guide-item {
  padding: 20px 0;
  border-bottom: 1px solid #e9ecef;
}

.guide-item:first-of-type {
  border-top: 1px solid #e9ecef;
}

.guide-item h3 {
  font-size: 18px;
  margin-bottom: 6px;
}

.guide-item p {
  font-size: 15px;
  color: #6c757d;
  margin-bottom: 8px;
}

.guide-item a {
  font-weight: 600;
  font-size: 15px;
}

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

.guide-step-block {
  background-color: #f8f9fa;
  border: 1px solid #e9ecef;
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 20px;
}

.guide-step-block h3 {
  font-size: 18px;
  margin-bottom: 12px;
  color: #1a73e8;
}

.guide-step-block p {
  font-size: 15px;
  margin-bottom: 12px;
}

.guide-step-block p strong {
  color: #333333;
}

.guide-steps {
  margin: 12px 0 16px;
  padding-left: 20px;
  list-style: decimal;
}

.guide-steps li {
  font-size: 15px;
  margin-bottom: 8px;
  padding-left: 4px;
}

.guide-steps li strong {
  font-weight: 600;
  color: #333333;
}

.guide-internal-links {
  background-color: #ffffff;
  border: 1px solid #e9ecef;
  border-radius: 8px;
  padding: 20px 24px;
  margin-bottom: 16px;
}

.guide-internal-links p {
  font-size: 15px;
  margin-bottom: 0;
}

.guide-internal-links a {
  font-weight: 600;
  margin-right: 16px;
}

/* FAQ 页 */

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

.faq-section > p {
  font-size: 15px;
  color: #6c757d;
  margin-bottom: 20px;
}

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

.faq-item {
  background-color: #ffffff;
  border: 1px solid #e9ecef;
  border-radius: 8px;
  overflow: hidden;
}

.faq-item summary {
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  position: relative;
  padding-right: 40px;
  list-style: none;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: #1a73e8;
  font-weight: 400;
}

.faq-item[open] summary::after {
  content: "-";
}

.faq-item summary:hover {
  background-color: #f8f9fa;
}

.faq-item > p {
  padding: 0 20px 16px;
  font-size: 15px;
  color: #6c757d;
  margin-bottom: 0;
}

.feedback-entry {
  background-color: #f8f9fa;
  border: 1px solid #e9ecef;
  border-radius: 8px;
  padding: 24px;
}

.feedback-entry p {
  font-size: 15px;
  color: #6c757d;
  margin-bottom: 12px;
}

.feedback-steps {
  margin: 12px 0 16px;
  padding-left: 20px;
  list-style: decimal;
}

.feedback-steps li {
  font-size: 15px;
  margin-bottom: 6px;
  padding-left: 4px;
}

/* 深度解读页 */

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

.analysis-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.analysis-card {
  background-color: #ffffff;
  border: 1px solid #e9ecef;
  border-radius: 8px;
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

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

.analysis-media {
  position: relative;
  height: 140px;
}

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

.analysis-card h3 {
  padding: 16px 16px 0;
  font-size: 17px;
  margin-bottom: 6px;
}

.analysis-card h3 a {
  color: #333333;
}

.analysis-card h3 a:hover {
  color: #1a73e8;
}

.card-summary {
  padding: 0 16px 16px;
  font-size: 14px;
  color: #6c757d;
  margin-bottom: 0;
}

.analysis-frameworks {
  margin-bottom: 40px;
}

.framework-item {
  background-color: #f8f9fa;
  border: 1px solid #e9ecef;
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 20px;
}

.framework-item h3 {
  font-size: 18px;
  margin-bottom: 12px;
  color: #1a73e8;
}

.framework-content h4 {
  font-size: 16px;
  margin-bottom: 4px;
  color: #333333;
}

.framework-content p {
  font-size: 15px;
  color: #6c757d;
  margin-bottom: 12px;
}

.related-reading {
  background-color: #ffffff;
  border: 1px solid #e9ecef;
  border-radius: 8px;
  padding: 20px 24px;
}

.related-reading p {
  font-size: 15px;
  margin-bottom: 0;
}

.related-reading a {
  font-weight: 600;
  margin-right: 16px;
}

/* 侧边栏 */

.sidebar-block,
.sidebar-card {
  background-color: #f8f9fa;
  border: 1px solid #e9ecef;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
}

.sidebar-block h2,
.sidebar-block h3,
.sidebar-card h2,
.sidebar-card h3 {
  font-size: 16px;
  margin-bottom: 12px;
  color: #333333;
  padding-bottom: 8px;
  border-bottom: 2px solid #1a73e8;
  display: inline-block;
}

.sidebar-list li,
.sidebar-links li {
  padding: 6px 0;
  border-bottom: 1px dashed #e9ecef;
}

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

.sidebar-list li a,
.sidebar-links li a {
  font-size: 14px;
  color: #333333;
  display: block;
}

.sidebar-list li a:hover,
.sidebar-links li a:hover {
  color: #1a73e8;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-list li {
  margin: 0;
}

.tag-list li a {
  display: inline-block;
  padding: 4px 12px;
  background-color: #ffffff;
  border: 1px solid #e9ecef;
  border-radius: 999px;
  font-size: 13px;
  color: #333333;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.tag-list li a:hover {
  background-color: #e8f0fe;
  border-color: #1a73e8;
  color: #1a73e8;
  text-decoration: none;
}

/* ==========================================================================
   404 页面
   ========================================================================== */

.error-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 20px;
}

.error-panel {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  padding: 48px 32px;
  background-color: #f8f9fa;
  border: 1px solid #e9ecef;
  border-radius: 8px;
}

.error-code {
  font-size: 72px;
  font-weight: 800;
  color: #1a73e8;
  margin-bottom: 8px;
  line-height: 1;
}

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

.error-panel p {
  color: #6c757d;
  font-size: 16px;
  margin-bottom: 24px;
}

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

.error-home-btn {
  display: inline-block;
  background-color: #1a73e8;
  color: #ffffff;
  padding: 10px 24px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  transition: background-color 0.2s ease;
}

.error-home-btn:hover {
  background-color: #1558b0;
  color: #ffffff;
  text-decoration: none;
}

.error-actions a:not(.error-home-btn) {
  display: inline-block;
  padding: 10px 24px;
  border: 1px solid #e9ecef;
  border-radius: 6px;
  font-size: 15px;
  color: #333333;
  background-color: #ffffff;
}

.error-actions a:not(.error-home-btn):hover {
  border-color: #1a73e8;
  color: #1a73e8;
  text-decoration: none;
}

/* ==========================================================================
   responsive
   ========================================================================== */

@media (max-width: 1024px) {
  .page-layout {
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 24px;
  }

  .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .analysis-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 768px) {
  .header-inner {
    height: auto;
    min-height: 56px;
    padding: 8px 16px;
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: inline-block;
    margin-left: auto;
    order: 3;
  }

  .site-nav {
    width: 100%;
    order: 4;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    width: 100%;
    padding: 8px 0;
    gap: 0;
  }

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

  .nav-list li {
    width: 100%;
  }

  .nav-list a {
    padding: 12px 16px;
    border-radius: 0;
    border-bottom: 1px solid #f8f9fa;
  }

  .site-main {
    padding: 24px 16px 40px;
  }

  .page-layout {
    display: block;
    padding: 0 16px 40px;
  }

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

  .sidebar {
    padding-top: 24px;
  }

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

  .section-title {
    font-size: 21px;
  }

  .focus-card {
    grid-template-columns: 1fr;
  }

  .focus-media {
    min-height: 220px;
  }

  .focus-content {
    padding: 24px;
  }

  .focus-content h3 {
    font-size: 22px;
  }

  .topic-grid,
  .guide-grid {
    grid-template-columns: 1fr;
  }

  .guide-card {
    grid-template-columns: 1fr;
  }

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

  .news-item {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .news-item p {
    grid-column: 1;
  }

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

  .pick-item p {
    grid-column: 1;
  }

  .channel-grid,
  .analysis-grid {
    grid-template-columns: 1fr;
  }

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

  .topic-list h2 {
    grid-column: 1;
  }

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

  .error-panel {
    padding: 32px 20px;
  }
}

@media (max-width: 480px) {
  .header-inner {
    padding: 8px 12px;
  }

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

  .logo-slogan {
    font-size: 11px;
  }

  .site-main {
    padding: 20px 12px 32px;
  }

  .page-layout {
    padding: 0 12px 32px;
  }

  .focus-media {
    min-height: 180px;
  }

  .channel-tags {
    gap: 8px;
  }

  .channel-tags .tag {
    padding: 6px 14px;
    font-size: 13px;
  }

  .topic-cover {
    height: 160px;
  }

  .topic-card img {
    height: 160px;
  }

  .analysis-media {
    height: 120px;
  }

  .channel-media {
    height: 120px;
  }

  .guide-step-block,
  .channel-note,
  .topic-note,
  .feedback-entry,
  .framework-item {
    padding: 16px;
  }

  .footer-inner {
    padding: 32px 12px 20px;
  }
}