/* ==========================================================
   base — 全局基础样式
   ========================================================== */
:root {
  --color-black: #000000;
  --color-white: #ffffff;
  --color-gray-100: #f5f5f5;
  --color-gray-600: #666666;
  --color-gray-800: #333333;
  --font-serif: "Songti SC", "SimSun", "Noto Serif SC", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --container-width: 1200px;
  --container-padding: 24px;
  --border-color: #e0e0e0;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 8px;
  --transition-base: 0.2s ease;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-gray-800);
  background-color: var(--color-white);
}

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

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

a:hover {
  color: var(--color-gray-600);
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-serif);
  color: var(--color-black);
  line-height: 1.3;
}

/* ==========================================================
   layout — 全站布局骨架
   ========================================================== */
.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

.site-header {
  background-color: var(--color-white);
  border-bottom: 2px solid var(--color-black);
}

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  position: relative;
}

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

.brand-name {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-tagline {
  font-size: 12px;
  color: var(--color-gray-600);
  margin-top: 2px;
}

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

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

.nav-list li a {
  display: block;
  padding: 10px 16px;
  font-size: 15px;
  color: var(--color-gray-800);
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition-base), color var(--transition-base);
}

.nav-list li a:hover {
  color: var(--color-black);
  border-bottom-color: var(--color-black);
}

.nav-list li a.is-current {
  color: var(--color-black);
  font-weight: 600;
  border-bottom-color: var(--color-black);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
}

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

/* ==========================================================
   components — 通用组件
   ========================================================== */
.section-heading {
  margin-bottom: 24px;
}

.section-heading h2 {
  font-size: 24px;
  font-weight: 700;
  position: relative;
  padding-bottom: 8px;
}

.section-heading h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 40px;
  height: 2px;
  background-color: var(--color-black);
}

.section-subtitle {
  font-size: 14px;
  color: var(--color-gray-600);
  margin-top: 6px;
}

.section-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 20px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
  position: relative;
}

.section-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 40px;
  height: 2px;
  background-color: var(--color-black);
}

/* 面包屑 */
.breadcrumb {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 16px var(--container-padding) 0;
  font-size: 14px;
  color: var(--color-gray-600);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.breadcrumb a {
  color: var(--color-gray-600);
}

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

.breadcrumb-sep {
  color: var(--color-gray-600);
}

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

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

.page-title {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 12px;
}

.page-description {
  font-size: 16px;
  color: var(--color-gray-600);
  max-width: 720px;
  line-height: 1.6;
}

/* ==========================================================
   components — 页脚
   ========================================================== */
.site-footer {
  background-color: var(--color-gray-100);
  border-top: 2px solid var(--color-black);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px var(--container-padding) 24px;
}

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

.footer-slogan {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.footer-desc {
  font-size: 14px;
  color: var(--color-gray-600);
  max-width: 640px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 24px;
}

.footer-col h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
}

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

.footer-col ul li a {
  font-size: 14px;
  color: var(--color-gray-600);
}

.footer-col ul li a:hover {
  color: var(--color-black);
}

.footer-bottom {
  text-align: center;
  font-size: 13px;
  color: var(--color-gray-600);
}

/* ==========================================================
   pages — 首页
   ========================================================== */
.home-main {
  background-color: var(--color-white);
}

/* 焦点报道 */
.hero-focus {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px var(--container-padding) 24px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  align-items: center;
}

.focus-media {
  overflow: hidden;
  border-radius: var(--radius-md);
  background-color: var(--color-gray-100);
}

.focus-media img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.focus-media img:hover {
  transform: scale(1.02);
}

.focus-content {
  padding: 8px 0;
}

.section-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-black);
  background-color: var(--color-white);
  border: 1px solid var(--color-black);
  padding: 4px 12px;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.focus-headline {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
}

.focus-summary {
  font-size: 15px;
  color: var(--color-gray-600);
  line-height: 1.7;
  margin-bottom: 24px;
}

.focus-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  border-bottom: 2px solid var(--color-black);
  padding-bottom: 4px;
}

.focus-link:hover {
  color: var(--color-gray-600);
  border-bottom-color: var(--color-gray-600);
}

/* 频道分类导航 */
.channels-nav {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px var(--container-padding);
  border-top: 1px solid var(--border-color);
}

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

.channel-tag {
  display: inline-block;
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 500;
  background-color: var(--color-gray-100);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

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

/* 最新资讯 */
.latest-news {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px var(--container-padding);
}

.news-list {
  border-top: 2px solid var(--color-black);
}

.news-item {
  border-bottom: 1px solid var(--border-color);
  padding: 20px 0;
}

.news-entry h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}

.news-entry h3 a:hover {
  text-decoration: underline;
}

.news-summary {
  font-size: 14px;
  color: var(--color-gray-600);
  line-height: 1.6;
  margin-bottom: 8px;
}

.news-entry time {
  font-size: 13px;
  color: var(--color-gray-600);
}

/* 专题推荐 */
.topics-featured {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px var(--container-padding);
  border-top: 1px solid var(--border-color);
}

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

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

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

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

.topic-content {
  padding: 20px;
}

.topic-content h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.topic-content h3 a:hover {
  text-decoration: underline;
}

.topic-content p {
  font-size: 14px;
  color: var(--color-gray-600);
  line-height: 1.6;
}

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

.pick-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.pick-item {
  padding: 20px;
  background-color: var(--color-gray-100);
  border-left: 3px solid var(--color-black);
}

.pick-item h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}

.pick-item h3 a:hover {
  text-decoration: underline;
}

.pick-reason {
  font-size: 14px;
  color: var(--color-gray-600);
  line-height: 1.6;
}

/* 信息来源与反馈 */
.source-info {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px var(--container-padding);
  border-top: 1px solid var(--border-color);
}

.source-text {
  background-color: var(--color-gray-100);
  padding: 24px;
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-black);
}

.source-text p {
  font-size: 14px;
  color: var(--color-gray-600);
  line-height: 1.7;
  margin-bottom: 8px;
}

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

/* ==========================================================
   pages — 内页通用
   ========================================================== */
.inner-main {
  background-color: var(--color-white);
}

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

/* ==========================================================
   pages — 频道分类页
   ========================================================== */
.channel-grid {
  margin-bottom: 48px;
}

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

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

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

.channel-card-media {
  overflow: hidden;
  background-color: var(--color-gray-100);
}

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

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

.channel-card-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.channel-card-desc {
  font-size: 14px;
  color: var(--color-gray-600);
  line-height: 1.6;
}

.channel-details {
  margin-bottom: 48px;
}

.details-list {
  border-top: 2px solid var(--color-black);
}

.detail-item {
  padding: 24px 0;
  border-bottom: 1px solid var(--border-color);
}

.detail-item-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}

.detail-item-loc {
  font-size: 13px;
  color: var(--color-gray-600);
  margin-bottom: 8px;
}

.detail-item-content {
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 8px;
}

.detail-item-example {
  font-size: 14px;
  color: var(--color-gray-600);
  line-height: 1.6;
}

/* 相关推荐 */
.related-links {
  background-color: var(--color-gray-100);
  padding: 24px;
  border-radius: var(--radius-md);
  margin-top: 48px;
}

.related-links .section-title {
  border-bottom: none;
  padding-bottom: 0;
  margin-bottom: 16px;
}

.related-links-list p {
  font-size: 14px;
  line-height: 1.8;
}

.related-links-list a {
  color: var(--color-gray-600);
  text-decoration: underline;
}

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

/* ==========================================================
   pages — 内容专题页
   ========================================================== */
.topic-list {
  padding: 0 var(--container-padding) 48px;
  max-width: var(--container-width);
  margin: 0 auto;
}

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

.topic-media {
  overflow: hidden;
  background-color: var(--color-gray-100);
}

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

.topic-content {
  padding: 20px;
}

.topic-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.topic-title a:hover {
  text-decoration: underline;
}

.topic-summary {
  font-size: 14px;
  color: var(--color-gray-600);
  line-height: 1.6;
  margin-bottom: 12px;
}

.topic-link {
  font-size: 14px;
  font-weight: 500;
  border-bottom: 1px solid var(--color-black);
  padding-bottom: 2px;
}

.topic-link:hover {
  border-bottom-color: var(--color-gray-600);
}

.topic-intro {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding) 48px;
}

.intro-list {
  border-top: 2px solid var(--color-black);
}

.intro-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--border-color);
}

.intro-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 6px;
}

.intro-text {
  font-size: 14px;
  color: var(--color-gray-600);
  line-height: 1.6;
  margin-bottom: 8px;
}

.intro-link {
  font-size: 14px;
  font-weight: 500;
  border-bottom: 1px solid var(--color-black);
  padding-bottom: 2px;
}

.intro-link:hover {
  border-bottom-color: var(--color-gray-600);
}

/* ==========================================================
   pages — 实用指南页
   ========================================================== */
.guide-body {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding) 48px;
}

.guide-figure {
  margin-bottom: 32px;
  background-color: var(--color-gray-100);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.guide-figure img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

.guide-figure figcaption {
  padding: 12px 20px;
  font-size: 13px;
  color: var(--color-gray-600);
  background-color: var(--color-gray-100);
  border-top: 1px solid var(--border-color);
}

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

.guide-section h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

.guide-section p {
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 16px;
}

.steps-list {
  counter-reset: step-counter;
  margin-top: 16px;
}

.steps-list li {
  counter-increment: step-counter;
  position: relative;
  padding: 16px 0 16px 48px;
  border-bottom: 1px solid var(--border-color);
}

.steps-list li::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  top: 16px;
  width: 32px;
  height: 32px;
  background-color: var(--color-black);
  color: var(--color-white);
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
}

.steps-list li h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 6px;
}

.steps-list li p {
  font-size: 14px;
  color: var(--color-gray-600);
  line-height: 1.6;
  margin-bottom: 0;
}

/* 工具列表 */
.tools-list {
  margin-top: 16px;
}

.tools-list li {
  padding: 12px 16px;
  background-color: var(--color-gray-100);
  border-left: 3px solid var(--color-black);
  margin-bottom: 12px;
  font-size: 14px;
  line-height: 1.6;
}

/* 注意事项 */
.notice-list {
  margin-top: 16px;
}

.notice-list li {
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  font-size: 14px;
  line-height: 1.6;
  position: relative;
  padding-left: 40px;
}

.notice-list li::before {
  content: "!";
  position: absolute;
  left: 12px;
  top: 12px;
  width: 20px;
  height: 20px;
  border: 1px solid var(--color-black);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
}

/* 相关阅读 */
.related-reads {
  background-color: var(--color-gray-100);
  padding: 24px;
  border-radius: var(--radius-md);
  margin-top: 40px;
}

.related-reads h2 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
}

.related-reads > p {
  font-size: 14px;
  color: var(--color-gray-600);
  margin-bottom: 16px;
}

.related-reads ul li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border-color);
}

.related-reads ul li:last-child {
  border-bottom: none;
}

.related-reads ul li a {
  font-size: 15px;
}

.related-reads ul li a:hover {
  text-decoration: underline;
}

/* ==========================================================
   pages — 深度解读页
   ========================================================== */
.article-list {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding) 48px;
}

.article-list h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 24px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

.article-entry {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border-color);
}

.article-entry:first-of-type {
  border-top: 2px solid var(--color-black);
}

.article-entry-media {
  overflow: hidden;
  background-color: var(--color-gray-100);
  border-radius: var(--radius-sm);
}

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

.article-entry-content h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}

.article-entry-content h3 a:hover {
  text-decoration: underline;
}

.entry-meta {
  font-size: 13px;
  color: var(--color-gray-600);
  margin-bottom: 12px;
}

.article-entry-content p {
  font-size: 14px;
  color: var(--color-gray-600);
  line-height: 1.6;
  margin-bottom: 8px;
}

.entry-link {
  margin-top: 12px;
}

.entry-link a {
  font-size: 14px;
  font-weight: 500;
  border-bottom: 1px solid var(--color-black);
  padding-bottom: 2px;
}

.entry-link a:hover {
  border-bottom-color: var(--color-gray-600);
}

/* 延伸阅读 */
.extended-reading {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding) 48px;
}

.extended-reading h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 24px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

.reading-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.reading-card {
  padding: 20px;
  background-color: var(--color-gray-100);
  border-radius: var(--radius-md);
  border-top: 3px solid var(--color-black);
}

.reading-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}

.reading-card p {
  font-size: 14px;
  color: var(--color-gray-600);
  line-height: 1.6;
}

.reading-note {
  padding: 16px 20px;
  background-color: var(--color-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

.reading-note p {
  font-size: 14px;
  color: var(--color-gray-600);
  line-height: 1.6;
}

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

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

.error-code {
  font-family: var(--font-serif);
  font-size: 96px;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 24px;
}

.error-content h1 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 16px;
}

.error-desc {
  font-size: 16px;
  color: var(--color-gray-600);
  margin-bottom: 16px;
}

.error-suggest {
  font-size: 14px;
  color: var(--color-gray-600);
  margin-bottom: 32px;
}

.btn-back-home {
  display: inline-block;
  padding: 12px 32px;
  background-color: var(--color-black);
  color: var(--color-white);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base);
}

.btn-back-home:hover {
  background-color: var(--color-gray-800);
  color: var(--color-white);
}

/* ==========================================================
   responsive — 响应式
   ========================================================== */
@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    min-height: 60px;
    padding: 12px var(--container-padding);
  }

  .nav-toggle {
    display: flex;
  }

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

  .nav-list {
    display: none;
    flex-direction: column;
    width: 100%;
    padding: 12px 0;
    border-top: 1px solid var(--border-color);
  }

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

  .nav-list li a {
    padding: 14px 8px;
    border-bottom: none;
    border-left: 3px solid transparent;
  }

  .nav-list li a.is-current {
    border-left-color: var(--color-black);
  }

  .nav-list li a:hover {
    background-color: var(--color-gray-100);
  }

  /* 首页 */
  .hero-focus {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 24px var(--container-padding) 16px;
  }

  .focus-media img {
    height: 240px;
  }

  .focus-headline {
    font-size: 26px;
  }

  .topics-grid {
    grid-template-columns: 1fr;
  }

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

  /* 内页 */
  .page-header {
    padding: 24px var(--container-padding) 16px;
  }

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

  .grid-shell {
    grid-template-columns: 1fr;
  }

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

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

  .article-entry-media img {
    height: 200px;
  }

  .reading-grid {
    grid-template-columns: 1fr;
  }

  .guide-figure img {
    height: 220px;
  }

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

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

@media (max-width: 480px) {
  :root {
    --container-padding: 16px;
  }

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

  .brand-tagline {
    font-size: 11px;
  }

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

  .section-title {
    font-size: 20px;
  }

  .channel-tags {
    gap: 8px;
  }

  .channel-tag {
    padding: 8px 16px;
    font-size: 14px;
  }

  .news-entry h3 {
    font-size: 16px;
  }

  .topic-content h3 {
    font-size: 17px;
  }

  .steps-list li {
    padding-left: 40px;
  }

  .steps-list li::before {
    width: 28px;
    height: 28px;
    font-size: 14px;
  }
}