/* =========================================================
   天美影视 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================= */

/* ---------- base ---------- */
:root {
  --paper: #f7f2e8;
  --ink: #1b2a41;
  --accent: #d9542f;
  --editorial: #2c6e63;
  --muted: #5c6675;
  --line: #e3dbcb;
  --paper-soft: #fbf8f1;
  --serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --wrap: 1120px;
  --col-main: 720px;
  --col-side: 300px;
  --gap-col: 40px;
}

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

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

body.site-body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--ink);
  text-decoration: none;
  transition: color 0.18s ease;
}

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

p {
  margin: 0 0 12px;
}

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

h1,
h2,
h3 {
  font-family: var(--serif);
  color: var(--ink);
  font-weight: 700;
  margin: 0 0 8px;
}

h1 {
  line-height: 1.35;
}

h2 {
  font-size: 20px;
  line-height: 1.4;
}

h3 {
  font-size: 17px;
  line-height: 1.5;
}

figure {
  margin: 0;
}

figcaption {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  letter-spacing: 0.02em;
}

time {
  font-variant-numeric: tabular-nums;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 60;
  padding: 10px 16px;
  background: var(--ink);
  color: var(--paper);
  border-radius: 4px;
  font-size: 14px;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 12px;
  color: var(--paper);
}

/* ---------- layout ---------- */
.site-header {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.masthead {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 20px 24px 14px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.brand {
  min-width: 0;
}

.brand-name {
  display: inline-block;
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--ink);
  letter-spacing: 0.02em;
}

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

.brand-tagline {
  margin: 4px 0 0;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.site-nav {
  align-self: flex-end;
}

.nav-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px 22px;
}

.nav-item {
  position: relative;
}

.nav-item > a {
  display: inline-block;
  padding: 6px 0;
  font-size: 15px;
  color: var(--ink);
  position: relative;
}

.nav-item > a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.2s ease;
}

.nav-item > a:hover::after,
.nav-item > a:focus-visible::after {
  transform: scaleX(1);
}

.nav-item > a.is-current {
  color: var(--accent);
}

.nav-item > a.is-current::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper-soft);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink);
}

.sub-toggle {
  display: none;
}

.sub-nav {
  position: absolute;
  left: 0;
  top: 100%;
  min-width: 168px;
  padding: 8px 0;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 4px;
  display: none;
  z-index: 30;
}

.nav-has-sub:hover .sub-nav,
.nav-has-sub:focus-within .sub-nav {
  display: block;
}

.sub-nav li a {
  display: block;
  padding: 7px 14px;
  font-size: 14px;
  color: var(--muted);
}

.sub-nav li a:hover {
  color: var(--accent);
}

.site-main {
  display: block;
}

.inner-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px 56px;
}

.home-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px 56px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 18px 0;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

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

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

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

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

.breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 18px 24px;
  font-size: 13px;
  color: var(--muted);
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 6px;
  color: var(--line);
}

.page-header {
  margin-bottom: 8px;
}

.page-title {
  font-family: var(--serif);
  font-size: 28px;
  line-height: 1.35;
  font-weight: 700;
  color: var(--ink);
  margin: 0;
}

.page-title p {
  margin: 0;
}

div.page-title {
  margin: 0 0 28px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-kicker {
  margin: 0 0 6px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--editorial);
  text-transform: uppercase;
}

.page-desc,
.page-subtitle,
.page-lead,
.page-title-desc {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 62ch;
}

.page-update,
.page-updated,
.page-title-update {
  margin: 8px 0 0;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.03em;
}

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, var(--col-main)) var(--col-side);
  gap: var(--gap-col);
  align-items: start;
}

.layout-main,
.primary-column {
  min-width: 0;
}

.layout-aside,
.secondary-column,
.content-aside {
  min-width: 0;
  font-size: 14px;
}

.site-footer {
  background: var(--paper-soft);
  border-top: 1px solid var(--line);
  margin-top: 24px;
}

.footer-grid {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 40px 24px 28px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 32px;
}

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

.footer-col-title {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.footer-brand-name {
  margin: 0 0 6px;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
}

.footer-brand-desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.footer-nav ul,
.footer-help ul {
  display: grid;
  gap: 6px;
}

.footer-nav a,
.footer-help a {
  font-size: 13px;
  color: var(--muted);
}

.footer-nav a:hover,
.footer-help a:hover {
  color: var(--accent);
}

.footer-tips p {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.footer-bottom {
  border-top: 1px solid var(--line);
}

.footer-bottom p {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 16px 24px;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.03em;
}

/* ---------- components ---------- */
.section-title {
  font-family: var(--serif);
  font-size: 20px;
  line-height: 1.4;
  margin: 0 0 6px;
  padding-left: 12px;
  border-left: 3px solid var(--accent);
}

.section-lead,
.section-note,
.section-intro {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 68ch;
}

/* 相关任务带 */
.task-band {
  margin: 48px 0 0;
  padding: 28px 0 0;
  border-top: 1px solid var(--line);
}

.task-band-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 14px;
}

.task-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
  min-height: 44px;
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.task-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.task-card-title {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.task-card-desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.task-band-item {
  padding: 16px 18px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.task-band-item a {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 700;
}

.task-band-item p {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--muted);
}

.task-band-inner {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 14px;
}

.task-item {
  display: block;
  padding: 16px 18px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
}

.task-item:hover {
  border-color: var(--accent);
  color: var(--ink);
}

.task-title {
  margin: 0 0 4px;
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 700;
}

.task-desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.task-band-title {
  font-family: var(--serif);
  font-size: 20px;
  margin: 0 0 6px;
}

.task-block {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.task-block-title {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.task-block-desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* 相关内容条 */
.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  margin-top: 32px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  font-size: 14px;
}

.related-links-label {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.related-links-item {
  color: var(--editorial);
  border-bottom: 1px solid transparent;
}

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

/* 折叠问答 */
.faq {
  display: grid;
  gap: 10px;
  margin-top: 6px;
}

.faq details {
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 18px;
}

.faq summary {
  position: relative;
  padding: 14px 26px 14px 0;
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  min-height: 44px;
  display: flex;
  align-items: center;
}

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

.faq summary::after {
  content: "";
  position: absolute;
  right: 2px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 0.18s ease;
}

.faq details[open] summary::after {
  transform: translateY(-30%) rotate(-135deg);
}

.faq details > p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* 编号步骤（首页） */
.step-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 6px;
}

.step-list > li {
  position: relative;
  padding: 18px 18px 16px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.step-list .step-index {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.step-list h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.step-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.verify-note {
  margin: 16px 0 0;
  padding: 12px 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  background: var(--paper-soft);
  border-left: 3px solid var(--editorial);
  border-radius: 0 4px 4px 0;
}

/* 撤销提示 */
.undo-note {
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-left: 3px solid var(--editorial);
  border-radius: 0 6px 6px 0;
  padding: 16px 18px;
  margin-bottom: 24px;
}

.undo-note h2 {
  font-size: 16px;
  margin: 0 0 6px;
}

.undo-note p {
  margin: 0 0 8px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.undo-note p:last-child {
  margin-bottom: 0;
}

.undo-valid {
  color: var(--editorial);
  letter-spacing: 0.03em;
}

/* 侧栏通用块 */
.aside-block {
  margin-bottom: 24px;
  padding: 16px 18px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.aside-block h2,
.aside-title {
  font-size: 16px;
  margin: 0 0 10px;
  font-family: var(--serif);
}

.aside-block p {
  margin: 0 0 8px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.aside-block p:last-child {
  margin-bottom: 0;
}

.aside-links ul,
.aside-block ul {
  display: grid;
  gap: 10px;
}

.aside-links li {
  display: grid;
  gap: 2px;
}

.aside-links li a {
  font-size: 14px;
  color: var(--ink);
}

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

.aside-links li span {
  font-size: 12px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- pages ---------- */
/* 首页 · 首屏 */
.focus {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 460px);
  gap: 40px;
  align-items: start;
  padding: 36px 0 40px;
  border-bottom: 1px solid var(--line);
}

.focus-copy {
  min-width: 0;
}

.focus-kicker {
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--accent);
  text-transform: uppercase;
}

.focus-copy h1 {
  font-size: 34px;
  line-height: 1.3;
  margin: 0 0 14px;
}

.focus-lead {
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
  margin: 0 0 10px;
  max-width: 40ch;
}

.focus-anchors {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.focus-anchors a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 16px;
  font-size: 14px;
  color: var(--ink);
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 4px;
}

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

.focus-visual {
  min-width: 0;
}

.focus-visual img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--line);
}

/* 首页 · 公告 */
.notices {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

.notice-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  margin-top: 14px;
}

.notice-grid li {
  padding: 16px 18px;
  background: var(--paper-soft);
  border-right: 1px solid var(--line);
}

.notice-grid li:last-child {
  border-right: 0;
}

.notice-label {
  display: inline-block;
  margin-bottom: 6px;
  padding: 1px 8px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--editorial);
  border: 1px solid var(--editorial);
  border-radius: 3px;
}

.notice-grid p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink);
}

/* 首页 · 频道标签 */
.tag-section {
  padding: 36px 0;
  border-bottom: 1px solid var(--line);
}

.tag-intro {
  margin: 0 0 20px;
  padding: 16px 18px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.tag-intro p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 68ch;
}

.tag-intro h2 {
  font-size: 20px;
  margin: 0 0 8px;
}

.tag-intro-points {
  display: grid;
  gap: 6px;
  margin-top: 12px;
}

.tag-intro-points li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.tag-intro-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--editorial);
  border-radius: 50%;
}

.tag-cloud {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 32px;
  border-top: 1px solid var(--line);
}

.tag-cloud li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 2px;
  border-bottom: 1px solid var(--line);
}

.tag-cloud a {
  flex: none;
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

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

.tag-desc {
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
  text-align: right;
}

/* 首页 · 专题片单 */
.feature-list {
  padding: 36px 0;
  border-bottom: 1px solid var(--line);
}

.feature {
  display: grid;
  grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.feature:first-of-type {
  border-top: 0;
  padding-top: 8px;
}

.feature-reverse {
  grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
}

.feature-reverse .feature-figure {
  order: 2;
}

.feature-figure {
  min-width: 0;
}

.feature-figure img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--line);
}

.feature-text {
  min-width: 0;
}

.feature-text h3 {
  font-size: 19px;
  margin: 0 0 8px;
}

.feature-text > p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  margin: 0 0 12px;
}

.feature-entries {
  display: grid;
  gap: 6px;
  margin-bottom: 12px;
}

.feature-entries li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink);
}

.feature-entries li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 2px;
  background: var(--accent);
}

.feature-more {
  margin: 0;
}

.feature-more a {
  font-size: 14px;
  color: var(--editorial);
  border-bottom: 1px solid var(--editorial);
  padding-bottom: 1px;
}

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

/* 首页 · 目录提要 */
.catalog-preview-section {
  padding: 36px 0;
  border-bottom: 1px solid var(--line);
}

.catalog-figure {
  margin-bottom: 18px;
}

.catalog-figure img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--line);
}

.catalog-preview {
  border-top: 1px solid var(--line);
}

.catalog-preview li {
  display: grid;
  grid-template-columns: 48px minmax(0, 1.4fr) 110px minmax(0, 1fr) 96px;
  gap: 12px;
  align-items: center;
  padding: 12px 0 12px 12px;
  border-bottom: 1px solid var(--line);
  position: relative;
  font-size: 14px;
}

.catalog-preview li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--accent);
  opacity: 0;
  transition: opacity 0.18s ease;
}

.catalog-preview li:hover::before {
  opacity: 1;
}

.row-index {
  font-family: var(--serif);
  font-size: 15px;
  color: var(--accent);
  font-weight: 700;
}

.row-topic {
  font-size: 15px;
  color: var(--ink);
}

.row-duration,
.row-source {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.row-date {
  font-size: 13px;
  color: var(--muted);
  text-align: right;
}

.catalog-more {
  margin: 16px 0 0;
}

.catalog-more a {
  font-size: 14px;
  color: var(--editorial);
  border-bottom: 1px solid var(--editorial);
}

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

/* 首页 · 核验与问答 */
.verify-section {
  padding: 36px 0;
  border-bottom: 1px solid var(--line);
}

.faq-section {
  padding: 36px 0;
}

/* 频道索引 */
.tag-intro + .channel-list {
  margin-top: 28px;
}

.channel-list > .section-note {
  margin-bottom: 20px;
}

.channel {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 24px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.channel-name {
  min-width: 0;
}

.channel-name h3 {
  margin: 0 0 4px;
  font-size: 17px;
}

.channel-count {
  margin: 0;
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.03em;
}

.channel-detail {
  min-width: 0;
}

.channel-scope {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.channel-basis {
  display: grid;
  gap: 4px;
}

.channel-basis li {
  position: relative;
  padding-left: 16px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.channel-basis li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border: 1px solid var(--editorial);
  border-radius: 50%;
}

.channel-figure {
  margin: 28px 0;
}

.channel-figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--line);
}

.boundary {
  padding: 22px 0 0;
  border-top: 1px solid var(--line);
}

.boundary h2 {
  font-size: 20px;
  margin: 0 0 8px;
}

.boundary > p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  margin: 0 0 10px;
  max-width: 68ch;
}

.boundary-exclude {
  display: grid;
  gap: 6px;
  margin-top: 12px;
  padding: 16px 18px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.boundary-exclude li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.boundary-exclude li::before {
  content: "×";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
  font-size: 14px;
}

/* 专题片单 */
.hero-visual {
  margin: 0 0 28px;
}

.hero-visual img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--line);
}

.editor-note {
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.editor-note h2 {
  font-size: 20px;
  margin: 0 0 8px;
}

.editor-note p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
  margin: 0 0 10px;
  max-width: 68ch;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.tag {
  padding: 3px 10px;
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--editorial);
  border: 1px solid var(--editorial);
  border-radius: 3px;
}

.entry-section {
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.entry-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.entry-item {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.entry-title {
  font-size: 17px;
  margin: 0 0 4px;
}

.entry-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin: 0 0 6px;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.entry-meta .entry-channel,
.entry-meta .entry-duration {
  padding: 1px 8px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--paper-soft);
}

.entry-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.entry-figure {
  margin: 20px 0;
}

.entry-figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--line);
}

.entry-list-second {
  border-top: 1px solid var(--line);
}

.schedule {
  padding-top: 28px;
}

.schedule h2 {
  font-size: 20px;
  margin: 0 0 8px;
}

.schedule-list {
  margin: 0;
  border-top: 1px solid var(--line);
}

.schedule-row {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 20px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.schedule-row dt {
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.schedule-row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.guide-brief,
.related-collections {
  margin-bottom: 24px;
  padding: 16px 18px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.guide-brief > p {
  margin: 0 0 10px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.guide-brief-list {
  display: grid;
  gap: 8px;
}

.guide-brief-list li a {
  font-size: 14px;
  color: var(--editorial);
}

.guide-brief-list li a:hover {
  color: var(--accent);
}

.related-list {
  display: grid;
  gap: 10px;
}

.related-list li a {
  display: block;
  font-size: 14px;
  color: var(--ink);
}

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

/* 节目目录 */
.catalog-fields {
  margin-bottom: 28px;
}

.catalog-fields h2,
.catalog-list h2,
.catalog-rules h2,
.correct-link h2 {
  font-size: 20px;
  margin: 0 0 8px;
}

.fields {
  margin: 0;
  border-top: 1px solid var(--line);
}

.field-row {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 20px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.field-row dt {
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.field-row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.catalog-list {
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.entry-rows {
  border-top: 1px solid var(--line);
}

.entry-row {
  display: grid;
  grid-template-columns: 52px minmax(0, 1.3fr) 110px minmax(0, 1fr) 100px;
  gap: 12px;
  align-items: center;
  padding: 12px 0 12px 12px;
  border-bottom: 1px solid var(--line);
  position: relative;
  font-size: 15px;
}

.entry-row::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--accent);
  opacity: 0;
  transition: opacity 0.18s ease;
}

.entry-row:hover::before {
  opacity: 1;
}

.entry-no {
  font-family: var(--serif);
  font-weight: 700;
  color: var(--accent);
}

.entry-genre {
  color: var(--ink);
}

.entry-duration {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.entry-source {
  font-size: 13px;
  color: var(--muted);
}

.entry-date {
  font-size: 13px;
  color: var(--muted);
  text-align: right;
}

.catalog-rules {
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.rules-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 14px;
}

.include,
.remove {
  padding: 18px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.include h3,
.remove h3 {
  font-size: 16px;
  margin: 0 0 10px;
}

.include h3 {
  color: var(--editorial);
}

.remove h3 {
  color: var(--accent);
}

.include ul,
.remove ul {
  display: grid;
  gap: 6px;
}

.include li,
.remove li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.include li::before,
.remove li::before {
  position: absolute;
  left: 0;
  top: 0;
  font-size: 13px;
}

.include li::before {
  content: "·";
  color: var(--editorial);
}

.remove li::before {
  content: "×";
  color: var(--accent);
}

.correct-link {
  padding: 24px 0 0;
  border-top: 1px solid var(--line);
}

.correct-link p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  margin: 0 0 14px;
  max-width: 68ch;
}

.correct-btn {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 22px;
  font-size: 15px;
  color: var(--paper);
  background: var(--ink);
  border-radius: 4px;
}

.correct-btn:hover {
  background: var(--accent);
  color: var(--paper);
}

/* 观看指南 */
.section {
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.verify-section > .section-intro,
.section > .section-intro {
  margin-bottom: 18px;
}

.verify-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.verify-step {
  padding: 18px 16px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.verify-step .step-index {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--accent);
}

.verify-step .step-title {
  font-size: 16px;
  margin: 0 0 6px;
}

.verify-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.guide-figure {
  margin-top: 24px;
}

.guide-figure img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--line);
}

.help-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
}

.nav-help,
.page-help {
  min-width: 0;
}

.nav-help h3,
.page-help h3 {
  font-size: 16px;
  margin: 0 0 10px;
}

.help-list {
  display: grid;
  gap: 8px;
}

.help-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.help-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 2px;
  background: var(--accent);
}

.out-of-scope-list {
  display: grid;
  gap: 8px;
  padding: 18px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.out-of-scope-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.out-of-scope-list li::before {
  content: "×";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
}

/* 内容纠错 */
.feedback-scope,
.feedback-exclude,
.feedback-process,
.feedback-undo {
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.feedback-scope h2,
.feedback-exclude h2,
.feedback-process h2,
.feedback-undo h2 {
  font-size: 20px;
  margin: 0 0 8px;
}

.feedback-scope > p,
.feedback-exclude > p,
.feedback-process > p,
.feedback-undo > p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  margin: 0 0 14px;
  max-width: 68ch;
}

.feedback-types {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.feedback-types li {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.type-name {
  margin: 0 0 2px;
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.type-example {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.exclude-list {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.exclude-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.exclude-list li::before {
  content: "×";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
}

.feedback-visual {
  margin: 8px 0 24px;
}

.feedback-visual img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--line);
}

.process {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.process li {
  padding: 14px 0 14px 44px;
  border-bottom: 1px solid var(--line);
  position: relative;
}

.process li::before {
  counter-increment: none;
}

.process li .process-name {
  margin: 0 0 4px;
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.process li > p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.process li:nth-child(1)::after,
.process li:nth-child(2)::after,
.process li:nth-child(3)::after,
.process li:nth-child(4)::after {
  position: absolute;
  left: 0;
  top: 14px;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
}

.process li:nth-child(1)::after {
  content: "01";
}

.process li:nth-child(2)::after {
  content: "02";
}

.process li:nth-child(3)::after {
  content: "03";
}

.process li:nth-child(4)::after {
  content: "04";
}

.undo-list {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.undo-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.undo-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 2px;
  background: var(--editorial);
}

.time-expect dl {
  margin: 0;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 12px;
}

.time-expect dt {
  font-family: var(--serif);
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
}

.time-expect dd {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* 栏目说明 */
.about-positioning,
.about-principles,
.about-boundary,
.about-update {
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.about-positioning > h2,
.about-principles > h2,
.about-boundary > h2,
.about-update > h2 {
  font-size: 20px;
  margin: 0 0 8px;
}

.positioning {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
  margin: 14px 0 24px;
}

.positioning-block {
  min-width: 0;
}

.positioning-block h3 {
  font-size: 16px;
  margin: 0 0 8px;
}

.positioning-block p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
  margin: 0 0 8px;
  max-width: 62ch;
}

.about-visual {
  margin: 0 0 24px;
}

.about-visual img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--line);
}

.column-split-title {
  font-size: 17px;
  margin: 0 0 10px;
}

.column-split {
  border-top: 1px solid var(--line);
}

.column-split li {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 6px 20px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.column-name {
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.column-duty {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink);
}

.column-edge {
  grid-column: 2;
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 14px;
}

.principle {
  padding: 18px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.principle h3 {
  font-size: 16px;
  margin: 0 0 8px;
}

.principle p {
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

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

.boundary {
  display: grid;
  gap: 6px;
  margin-top: 14px;
}

.about-boundary .boundary {
  padding: 18px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.boundary li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.boundary li::before {
  content: "×";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
}

.update {
  margin: 14px 0 0;
  border-top: 1px solid var(--line);
}

.update-item {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 20px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.update-item dt {
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.update-item dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* 404 */
.error-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px 56px;
}

.error-title {
  margin: 40px 0 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.error-code {
  margin: 0 0 6px;
  font-family: var(--serif);
  font-size: 44px;
  font-weight: 700;
  line-height: 1;
  color: var(--accent);
}

.error-title h1 {
  font-size: 28px;
  margin: 0 0 8px;
}

.error-desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 62ch;
}

.error-body {
  padding: 8px 0 24px;
}

.error-body h2 {
  font-size: 20px;
  margin: 0 0 8px;
}

.error-body > p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  margin: 0 0 16px;
  max-width: 62ch;
}

.error-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 20px;
  margin-bottom: 20px;
}

.error-links li a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 16px;
  font-size: 15px;
  color: var(--ink);
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 4px;
}

.error-links li a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.error-note {
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
  margin: 0 0 16px;
  max-width: 62ch;
}

.error-home {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 22px;
  font-size: 15px;
  color: var(--paper);
  background: var(--ink);
  border-radius: 4px;
}

.error-home:hover {
  background: var(--accent);
  color: var(--paper);
}

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .page-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .layout-aside,
  .secondary-column,
  .content-aside {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .layout-aside > *,
  .secondary-column > *,
  .content-aside > * {
    margin-bottom: 0;
  }

  .focus {
    grid-template-columns: minmax(0, 1fr) minmax(0, 380px);
    gap: 28px;
  }

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

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
  }
}

@media (max-width: 760px) {
  .masthead {
    padding: 16px 18px 12px;
    align-items: center;
    flex-wrap: nowrap;
  }

  .brand-name {
    font-size: 22px;
  }

  .brand-tagline {
    font-size: 12px;
  }

  .nav-toggle {
    display: flex;
    flex: none;
  }

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

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
    margin-top: 12px;
    padding: 8px 0;
    border-top: 1px solid var(--line);
  }

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

  .nav-item {
    border-bottom: 1px solid var(--line);
  }

  .nav-item:last-child {
    border-bottom: 0;
  }

  .nav-item > a {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 10px 4px;
    font-size: 16px;
  }

  .nav-item > a::after {
    display: none;
  }

  .nav-item > a.is-current {
    color: var(--accent);
  }

  .nav-has-sub {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
  }

  .nav-has-sub > a {
    flex: 1 1 auto;
  }

  .sub-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    background: transparent;
    border: 0;
    cursor: pointer;
    flex: none;
  }

  .sub-toggle-icon {
    position: relative;
    width: 12px;
    height: 12px;
  }

  .sub-toggle-icon::before,
  .sub-toggle-icon::after {
    content: "";
    position: absolute;
    background: var(--ink);
  }

  .sub-toggle-icon::before {
    left: 0;
    top: 5px;
    width: 12px;
    height: 2px;
  }

  .sub-toggle-icon::after {
    left: 5px;
    top: 0;
    width: 2px;
    height: 12px;
    transition: transform 0.18s ease, opacity 0.18s ease;
  }

  .sub-toggle[aria-expanded="true"] .sub-toggle-icon::after {
    transform: scaleY(0);
    opacity: 0;
  }

  .sub-nav {
    position: static;
    display: none;
    flex-basis: 100%;
    width: 100%;
    min-width: 0;
    margin: 0 0 8px;
    padding: 4px 0 4px 14px;
    background: transparent;
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
  }

  .sub-nav.is-open {
    display: block;
  }

  .nav-has-sub:hover .sub-nav,
  .nav-has-sub:focus-within .sub-nav {
    display: none;
  }

  .nav-has-sub:hover .sub-nav.is-open,
  .nav-has-sub:focus-within .sub-nav.is-open {
    display: block;
  }

  .sub-nav li a {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 8px 6px;
    font-size: 15px;
  }

  .home-main,
  .inner-main,
  .error-main {
    padding: 0 18px 40px;
  }

  .breadcrumb {
    padding: 14px 0;
    font-size: 12px;
  }

  .breadcrumb-list {
    padding: 14px 18px;
    font-size: 12px;
  }

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

  div.page-title {
    margin-bottom: 22px;
    padding-bottom: 14px;
  }

  .page-desc,
  .page-subtitle,
  .page-lead,
  .page-title-desc {
    font-size: 14px;
  }

  .focus {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
    padding: 24px 0 30px;
  }

  .focus-copy h1 {
    font-size: 24px;
  }

  .focus-lead {
    font-size: 15px;
    max-width: none;
  }

  .focus-anchors {
    gap: 8px;
  }

  .focus-visual img {
    height: 220px;
  }

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

  .notice-grid li {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .notice-grid li:last-child {
    border-bottom: 0;
  }

  .tag-cloud {
    grid-template-columns: minmax(0, 1fr);
  }

  .tag-cloud li {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }

  .tag-desc {
    text-align: left;
  }

  .feature,
  .feature-reverse {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .feature-reverse .feature-figure {
    order: 0;
  }

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

  .catalog-preview li {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 4px 10px;
    padding: 12px 0 12px 10px;
  }

  .catalog-preview .row-topic {
    font-size: 15px;
  }

  .catalog-preview .row-duration,
  .catalog-preview .row-source,
  .catalog-preview .row-date {
    grid-column: 2;
    text-align: left;
  }

  .step-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .task-band-grid,
  .task-band-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .layout-aside,
  .secondary-column,
  .content-aside {
    grid-template-columns: minmax(0, 1fr);
  }

  .channel {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .channel-figure img,
  .hero-visual img,
  .entry-figure img,
  .guide-figure img,
  .feedback-visual img,
  .about-visual img {
    height: 200px;
  }

  .schedule-row,
  .update-item,
  .field-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .entry-row {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 4px 10px;
    padding: 12px 0 12px 10px;
  }

  .entry-row .entry-duration,
  .entry-row .entry-source,
  .entry-row .entry-date {
    grid-column: 2;
    text-align: left;
  }

  .rules-grid,
  .help-columns,
  .principle-grid,
  .positioning {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .verify-steps {
    grid-template-columns: minmax(0, 1fr);
  }

  .column-split li {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .column-edge {
    grid-column: 1;
  }

  .error-links {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
    padding: 30px 18px 22px;
  }

  .footer-bottom p {
    padding: 14px 18px;
  }
}

@media (max-width: 480px) {
  .focus-copy h1 {
    font-size: 24px;
  }

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

  .section-title {
    font-size: 18px;
  }

  .focus-anchors a {
    width: 100%;
    justify-content: center;
  }

  .catalog-preview .row-duration,
  .catalog-preview .row-source,
  .catalog-preview .row-date {
    font-size: 12px;
  }

  .entry-row .entry-duration,
  .entry-row .entry-source,
  .entry-row .entry-date {
    font-size: 12px;
  }

  .process li {
    padding-left: 38px;
  }

  .error-code {
    font-size: 36px;
  }
}