/* ============ base ============ */
:root {
  --color-primary: #1a73e8;
  --color-primary-dark: #1558b0;
  --color-accent: #ff8c00;
  --color-bg: #f5f5f5;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-white: #ffffff;
  --color-border: #e0e0e0;
  --font-serif: "Source Han Serif SC", "Noto Serif CJK SC", "Songti SC", "SimSun", serif;
  --font-sans: "Source Han Sans SC", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --container-width: 1200px;
  --radius: 8px;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 6px 16px rgba(0, 0, 0, 0.12);
  --transition: 0.25s ease;
}

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

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

body {
  font-family: var(--font-serif);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-text);
}

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

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

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

ul, ol {
  list-style-position: inside;
}

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

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-header {
  background-color: var(--color-white);
  border-bottom: 2px solid var(--color-primary);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand-logo {
  font-family: var(--font-sans);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0;
}

.brand-logo:hover {
  color: var(--color-primary-dark);
}

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

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

.nav-list li a {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  padding: 10px 16px;
  border-radius: 4px;
  transition: color var(--transition), background-color var(--transition);
}

.nav-list li a:hover {
  color: var(--color-primary);
  background-color: rgba(26, 115, 232, 0.06);
}

.nav-list li a.is-current {
  color: var(--color-primary);
  font-weight: 600;
  background-color: rgba(26, 115, 232, 0.1);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  cursor: pointer;
}

.nav-toggle-line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: background-color var(--transition);
}

.site-main {
  flex: 1;
}

.home-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px 60px;
  width: 100%;
}

.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px 60px;
  width: 100%;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--color-text-light);
  padding: 16px 0;
}

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

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

.breadcrumb-sep {
  color: #bbb;
}

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

.breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

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

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

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

.page-header {
  padding: 24px 0 32px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 36px;
}

.page-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}

.page-description {
  font-size: 1rem;
  color: var(--color-text-light);
  max-width: 720px;
  line-height: 1.8;
}

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 32px;
  align-items: start;
}

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

.section-title {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-primary);
  position: relative;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 56px;
  height: 2px;
  background-color: var(--color-accent);
}

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

/* hero */
.hero {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  padding: 32px 0 40px;
  align-items: center;
}

.hero-media {
  min-width: 0;
}

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

.hero-figure img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

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

.hero-content h1 {
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 16px;
  color: var(--color-text);
}

.hero-summary {
  font-size: 1rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 24px;
}

.cta-button {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-white);
  background-color: var(--color-primary);
  padding: 12px 28px;
  border-radius: 6px;
  transition: background-color var(--transition), transform var(--transition);
}

.cta-button:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* channel nav */
.channel-nav {
  padding: 32px 0;
}

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

.tag {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 8px 20px;
  transition: all var(--transition);
}

.tag:hover {
  color: var(--color-white);
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

/* latest news */
.latest-news {
  padding: 32px 0;
}

.news-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}

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

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

.news-entry {
  padding: 20px 0;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "title date"
    "excerpt date";
  gap: 8px 24px;
  align-items: baseline;
}

.news-entry h3 {
  grid-area: title;
  font-size: 1.08rem;
  font-weight: 600;
}

.news-entry h3 a {
  color: var(--color-text);
}

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

.news-excerpt {
  grid-area: excerpt;
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.news-date {
  grid-area: date;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--color-text-light);
  white-space: nowrap;
}

/* specials */
.specials {
  padding: 32px 0;
}

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

.special-card {
  background-color: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

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

.special-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  padding: 16px 16px 4px;
}

.special-card h3 a {
  color: var(--color-text);
}

.special-card h3 a:hover {
  color: var(--color-primary);
}

.special-card p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.7;
  padding: 0 16px 16px;
}

/* editor picks */
.editor-picks {
  padding: 32px 0;
}

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

.pick-item {
  background-color: var(--color-white);
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 20px;
  box-shadow: var(--shadow);
  transition: transform var(--transition);
}

.pick-item:hover {
  transform: translateX(4px);
}

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

.pick-item h3 a {
  color: var(--color-text);
}

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

.pick-reason {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* source info */
.source-info {
  padding: 32px 0;
  background-color: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-top: 16px;
}

.source-info .section-title {
  padding: 24px 24px 0;
  border-bottom: none;
}

.source-info .section-title::after {
  display: none;
}

.source-info > p {
  padding: 0 24px;
  font-size: 0.92rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.source-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 16px 24px 24px;
}

.source-links a {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  border-radius: 4px;
  padding: 6px 16px;
  transition: all var(--transition);
}

.source-links a:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* footer */
.site-footer {
  background-color: #2b2b2b;
  color: #cccccc;
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 20px 24px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
}

.footer-brand {
  min-width: 0;
}

.footer-site-name {
  font-family: var(--font-sans);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 0.88rem;
  line-height: 1.7;
  color: #999;
}

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

.footer-title {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 12px;
}

.footer-col ul {
  list-style: none;
}

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

.footer-col li a {
  font-size: 0.88rem;
  color: #999;
}

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

.footer-extra {
  grid-column: 1 / -1;
  border-top: 1px solid #444;
  padding-top: 20px;
  font-size: 0.82rem;
  color: #888;
  line-height: 1.6;
}

.copyright {
  margin-top: 6px;
}

/* breadcrumb inside main */
.inner-main > .breadcrumb {
  margin-bottom: 8px;
}

/* channel list page */
.channel-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.channel-card {
  background-color: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.channel-card img {
  width: 100%;
  height: 150px;
  object-fit: cover;
}

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

.channel-name {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.channel-desc {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 12px;
}

.channel-link {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-primary);
  border-bottom: 1px solid var(--color-primary);
  padding-bottom: 2px;
}

.channel-link:hover {
  color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

.channel-intro {
  margin-top: 40px;
  background-color: var(--color-white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.channel-intro .section-title {
  margin-bottom: 16px;
}

.intro-content p {
  font-size: 0.92rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 12px;
}

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

/* zhuanti page sidebar */
.sidebar-right {
  min-width: 0;
}

.sidebar-card {
  background-color: var(--color-white);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.sidebar-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-primary);
}

.sidebar-list {
  list-style: none;
}

.sidebar-item {
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.sidebar-link {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 4px;
}

.sidebar-link:hover {
  color: var(--color-primary);
}

.sidebar-desc {
  font-size: 0.82rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* zhuanti special section */
.special-section {
  margin-top: 8px;
}

.special-media {
  overflow: hidden;
}

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

.special-body {
  padding: 16px;
}

.special-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.special-link {
  color: var(--color-text);
}

.special-link:hover {
  color: var(--color-primary);
}

.special-summary {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* zhinan guide page */
.guide-section {
  margin-bottom: 40px;
}

.section-desc {
  font-size: 0.92rem;
  color: var(--color-text-light);
  margin-bottom: 24px;
  line-height: 1.7;
}

.guide-item {
  background-color: var(--color-white);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}

.guide-item h3 {
  font-size: 1.02rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.guide-item h3 a {
  color: var(--color-text);
}

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

.guide-item p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 6px;
}

.guide-item p:last-child {
  margin-bottom: 0;
}

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

.steps-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.step-item {
  background-color: var(--color-white);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  position: relative;
}

.step-item h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  padding-left: 32px;
  position: relative;
}

.step-item h3::before {
  content: attr(data-step);
  position: absolute;
  left: 0;
  top: 0;
  width: 24px;
  height: 24px;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.step-item p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

.guide-figure {
  margin: 32px 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.guide-figure img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.guide-figure figcaption {
  background-color: var(--color-white);
  padding: 12px 16px;
  font-size: 0.85rem;
  color: var(--color-text-light);
  text-align: center;
}

/* jiedu article list */
.article-list-wrap {
  min-width: 0;
}

.article-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 20px;
  background-color: var(--color-white);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.article-media {
  overflow: hidden;
  border-radius: 6px;
}

.article-media img {
  width: 100%;
  height: 140px;
  object-fit: cover;
}

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

.article-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.article-title a {
  color: var(--color-text);
}

.article-title a:hover {
  color: var(--color-primary);
}

.article-meta {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: #999;
  margin-bottom: 8px;
}

.article-excerpt {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 8px;
}

.article-points {
  font-size: 0.85rem;
  color: var(--color-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
}

/* jiedu sidebar */
.aside-side {
  min-width: 0;
}

.aside-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-primary);
}

.hot-list {
  list-style: none;
  counter-reset: hot;
}

.hot-list li {
  counter-increment: hot;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.hot-list li::before {
  content: counter(hot);
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-right: 10px;
}

.hot-list li a {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.5;
}

.hot-list li a:hover {
  color: var(--color-primary);
}

.aside-more {
  margin-top: 20px;
  padding: 16px;
  background-color: var(--color-bg);
  border-radius: 6px;
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

.aside-more a {
  font-weight: 500;
}

/* jiedu read guide */
.read-guide {
  margin-top: 40px;
  background-color: var(--color-white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.read-guide .section-title {
  margin-bottom: 12px;
}

.read-guide p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.read-guide a {
  font-weight: 500;
}

/* wenti faq */
.faq-list {
  margin-bottom: 40px;
}

.content-media-inline {
  margin: 0 auto 24px;
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 640px;
}

.content-media-inline img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.content-media-inline figcaption {
  background-color: var(--color-white);
  padding: 10px 16px;
  font-size: 0.85rem;
  color: var(--color-text-light);
  text-align: center;
}

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

.faq-item {
  background-color: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.faq-item summary {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 48px;
  transition: color var(--transition);
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--color-primary);
  transition: transform var(--transition);
}

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

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

.faq-answer {
  padding: 0 20px 18px;
  border-top: 1px solid var(--color-border);
  padding-top: 14px;
}

.faq-answer p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.answer-content {
  background-color: var(--color-white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.answer-content-inner {
  font-size: 0.92rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.answer-content-inner p {
  margin-bottom: 12px;
}

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

.answer-content-inner a {
  font-weight: 500;
}

/* 404 */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 20px;
}

.error-content {
  text-align: center;
  max-width: 560px;
  width: 100%;
}

.error-code {
  font-family: var(--font-sans);
  font-size: 5rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 16px;
}

.error-content h1 {
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.error-desc {
  font-size: 1rem;
  color: var(--color-text-light);
  margin-bottom: 32px;
  line-height: 1.7;
}

.error-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 24px;
}

.error-btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-white);
  background-color: var(--color-primary);
  padding: 10px 28px;
  border-radius: 6px;
  transition: background-color var(--transition);
}

.error-btn:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
}

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

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

.error-help {
  font-size: 0.88rem;
  color: var(--color-text-light);
}

.error-help a {
  font-weight: 500;
}

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

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

  .hero-figure img {
    height: 280px;
  }

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

  .page-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .sidebar-right,
  .aside-side {
    order: 2;
  }

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

@media (max-width: 768px) {
  .header-inner {
    height: auto;
    min-height: 60px;
    position: relative;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    flex-direction: column;
    padding: 12px 20px;
    border-bottom: 2px solid var(--color-primary);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
    z-index: 99;
  }

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

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

  .nav-list li a {
    padding: 12px 8px;
    border-bottom: 1px solid var(--color-border);
  }

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

  .breadcrumb {
    padding: 12px 0;
    font-size: 0.82rem;
  }

  .page-header {
    padding: 16px 0 24px;
    margin-bottom: 24px;
  }

  .page-title {
    font-size: 1.5rem;
  }

  .hero {
    padding: 20px 0 28px;
    gap: 20px;
  }

  .hero-content h1 {
    font-size: 1.4rem;
  }

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

  .news-entry {
    grid-template-columns: 1fr;
    grid-template-areas:
      "title"
      "excerpt"
      "date";
    gap: 6px;
  }

  .news-date {
    font-size: 0.8rem;
  }

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

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

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

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

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

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

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

  .pick-item {
    padding: 14px 16px;
  }

  .error-code {
    font-size: 3.5rem;
  }

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

  .error-btn {
    width: 100%;
    max-width: 240px;
    text-align: center;
  }

  .channel-intro,
  .read-guide,
  .answer-content {
    padding: 16px;
  }

  .source-info .section-title,
  .source-info > p,
  .source-links {
    padding-left: 16px;
    padding-right: 16px;
  }
}

@media (max-width: 480px) {
  .header-inner {
    padding: 0 16px;
  }

  .brand-logo {
    font-size: 1.2rem;
  }

  .home-main,
  .inner-main {
    padding: 0 16px 40px;
  }

  .hero-figure img {
    height: 180px;
  }

  .tag {
    padding: 6px 14px;
    font-size: 0.85rem;
  }

  .news-entry {
    padding: 16px 0;
  }

  .special-card img,
  .special-media img {
    height: 160px;
  }

  .channel-card img {
    height: 140px;
  }

  .guide-figure img {
    height: 200px;
  }

  .content-media-inline img {
    height: 180px;
  }

  .faq-item summary {
    padding: 14px 44px 14px 16px;
    font-size: 0.95rem;
  }

  .faq-answer {
    padding: 12px 16px 14px;
  }

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

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