/* ==========================================================================
   九一影视 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base：变量、重置、排版基础
   -------------------------------------------------------------------------- */
:root {
  --bg: #f6f7f6;
  --surface: #ffffff;
  --text: #1f2427;
  --text-soft: #5b6669;
  --accent: #0f6f6a;
  --accent-soft: #2f8f86;
  --line: #dfe3e2;
  --line-strong: #c9d0ce;
  --shadow: 0 1px 2px rgba(31, 36, 39, 0.05);
  --radius: 6px;
  --container: 1120px;
  --reading: 760px;
  --font: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", sans-serif;
}

:root[data-theme="dark"] {
  --bg: #14181a;
  --surface: #1a2022;
  --text: #e8ecea;
  --text-soft: #9aa5a3;
  --accent: #4fb3a8;
  --accent-soft: #6cc5b9;
  --line: #2a3234;
  --line-strong: #3a4446;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
  text-underline-offset: 3px;
}

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

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 600;
  line-height: 1.35;
}

p {
  margin: 0 0 0.9em;
}

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

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

figure {
  margin: 0;
}

table {
  border-collapse: collapse;
  width: 100%;
}

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

strong {
  font-weight: 600;
  color: var(--text);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -48px;
  z-index: 60;
  padding: 10px 16px;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  transition: top 0.16s ease;
}

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

/* --------------------------------------------------------------------------
   layout：页头、导航、主容器、页脚骨架
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  flex: none;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
}

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

.site-nav {
  flex: 1 1 auto;
  min-width: 0;
}

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

.nav-link {
  display: inline-block;
  padding: 8px 0;
  font-size: 0.94rem;
  color: var(--text-soft);
  border-bottom: 2px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.nav-link:hover {
  color: var(--accent);
}

.nav-link.is-current {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.theme-toggle {
  flex: none;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text-soft);
  transition: color 0.16s ease, border-color 0.16s ease;
}

.theme-toggle:hover {
  color: var(--accent);
  border-color: var(--accent-soft);
}

.theme-toggle-icon {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid currentColor;
  background: linear-gradient(
    90deg,
    currentColor 0 50%,
    transparent 50% 100%
  );
}

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

.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
}

.site-main {
  display: block;
}

.home-main {
  padding-bottom: 8px;
}

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

.site-footer {
  margin-top: 48px;
  background: var(--surface);
  border-top: 1px solid var(--line);
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 44px 24px 28px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
  gap: 32px;
}

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

.footer-name {
  margin: 0 0 6px;
  font-size: 1.05rem;
  font-weight: 600;
}

.footer-slogan {
  margin: 0 0 12px;
  font-size: 0.9rem;
  color: var(--accent);
}

.footer-intro {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--text-soft);
  max-width: 34em;
}

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

.footer-col-title {
  margin: 0 0 12px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  font-size: 0.88rem;
  color: var(--text-soft);
}

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

.footer-scope p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--text-soft);
}

.footer-bottom {
  max-width: var(--container);
  margin: 0 auto;
  padding: 16px 24px 28px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  font-size: 0.82rem;
  color: var(--text-soft);
}

.footer-copy {
  color: var(--text);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   layout：内页统一骨架（面包屑、页标题区、主容器）
   -------------------------------------------------------------------------- */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 22px 0 0;
  font-size: 0.84rem;
  color: var(--text-soft);
}

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

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

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

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

.breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: var(--line-strong);
}

.page-header {
  padding: 18px 0 8px;
}

.page-title {
  font-size: clamp(1.65rem, 3.2vw, 2.35rem);
  font-weight: 600;
  line-height: 1.3;
  color: var(--text);
}

.page-hero {
  padding: 14px 0 26px;
  border-bottom: 1px solid var(--line);
}

.page-lead {
  max-width: 44em;
  font-size: 1rem;
  color: var(--text-soft);
  margin: 0 0 10px;
}

.page-meta {
  font-size: 0.84rem;
  color: var(--text-soft);
  margin: 0;
  font-variant-numeric: tabular-nums;
}

.section-title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 600;
  margin: 0 0 6px;
}

.section-index,
.section-num {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
}

.section-lead,
.section-intro,
.section-desc,
.section-note {
  font-size: 0.92rem;
  color: var(--text-soft);
  margin: 0 0 20px;
  max-width: 52em;
}

.section {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

.section:last-of-type {
  border-bottom: 0;
}

/* --------------------------------------------------------------------------
   components：按钮、文字链接、标签、编号、图片
   -------------------------------------------------------------------------- */
.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 22px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: background-color 0.16s ease, color 0.16s ease,
    border-color 0.16s ease;
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--accent-soft);
  color: #ffffff;
}

.btn-secondary {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent-soft);
}

.btn-secondary:hover {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

.text-link {
  display: inline-block;
  font-size: 0.92rem;
  color: var(--text);
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 1px;
  transition: color 0.16s ease, border-color 0.16s ease;
}

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

.inline-link {
  color: var(--accent);
  border-bottom: 1px solid transparent;
  transition: border-color 0.16s ease;
}

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

.strip-tag {
  flex: none;
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 18px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 0.9rem;
  color: var(--text);
  background: var(--surface);
  white-space: nowrap;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.strip-tag:hover {
  color: var(--accent);
  border-color: var(--accent-soft);
}

/* 图片统一约束 */
.hero-media img,
.feature-media img,
.page-hero-media img,
.topic-figure img,
.reading-figure img,
.note-figure img,
.scope-figure img,
.archive-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius);
  background: var(--line);
}

figcaption {
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--text-soft);
}

/* --------------------------------------------------------------------------
   pages：首页
   -------------------------------------------------------------------------- */
.hero {
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px 24px 44px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 44px;
  align-items: center;
}

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

.hero-eyebrow {
  margin: 0 0 14px;
  font-size: 0.84rem;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.hero-text h1 {
  margin: 0 0 16px;
  font-size: clamp(1.65rem, 3.2vw, 2.35rem);
  font-weight: 600;
  line-height: 1.3;
}

.hero-lead {
  max-width: 30em;
  font-size: 1rem;
  color: var(--text-soft);
  margin: 0 0 26px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
}

.hero-media {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.hero-media img {
  aspect-ratio: 4 / 3;
}

.hero-index {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.hero-index-row {
  display: flex;
  gap: 10px;
  font-size: 0.86rem;
  color: var(--text-soft);
}

.hero-index-key {
  flex: none;
  min-width: 4.5em;
  color: var(--accent);
  font-weight: 600;
}

/* 题材标签条 */
.topic-strip {
  max-width: var(--container);
  margin: 0 auto;
  padding: 32px 24px 30px;
  border-bottom: 1px solid var(--line);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 20px;
  margin-bottom: 16px;
}

.section-head h2 {
  font-size: 1.15rem;
  font-weight: 600;
}

.section-head .section-note {
  margin: 0;
}

.strip-scroller {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
  scroll-snap-type: x proximity;
}

.strip-scroller::-webkit-scrollbar {
  height: 6px;
}

.strip-scroller::-webkit-scrollbar-thumb {
  background: var(--line-strong);
  border-radius: 3px;
}

.strip-tag {
  scroll-snap-align: start;
}

/* 三块主区 */
.triple {
  max-width: var(--container);
  margin: 0 auto;
  padding: 36px 24px;
  border-bottom: 1px solid var(--line);
}

.triple-grid {
  display: grid;
  grid-template-columns: 5fr 4fr 3fr;
  gap: 32px;
  align-items: start;
}

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

.feature-media {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.feature-media img {
  aspect-ratio: 16 / 10;
}

.feature-title {
  font-size: 1.05rem;
  margin: 0 0 8px;
}

.feature-desc {
  font-size: 0.9rem;
  color: var(--text-soft);
  margin: 0 0 12px;
}

.col-title {
  font-size: 1rem;
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.entry-list {
  display: flex;
  flex-direction: column;
  counter-reset: entry;
}

.entry-row {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.9rem;
}

.entry-row:last-child {
  border-bottom: 0;
}

.entry-num {
  flex: none;
  width: 2em;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.entry-body {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.entry-name {
  color: var(--text);
}

.entry-meta {
  font-size: 0.8rem;
  color: var(--text-soft);
}

.triple-notes {
  min-width: 0;
}

.notes-text {
  font-size: 0.9rem;
  color: var(--text-soft);
  margin: 0 0 12px;
}

/* 年份速览 */
.year-glance {
  max-width: var(--container);
  margin: 0 auto;
  padding: 36px 24px;
  border-bottom: 1px solid var(--line);
}

.year-rows {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.year-row {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr) 140px;
  gap: 24px;
  align-items: start;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.year-label {
  font-size: 1.05rem;
  font-variant-numeric: tabular-nums;
}

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

.year-items {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--text-soft);
}

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

.year-enter {
  justify-self: end;
  align-self: center;
  font-size: 0.88rem;
  color: var(--accent);
}

.year-enter:hover {
  color: var(--accent-soft);
}

/* 观看准备三步 */
.prep-steps {
  max-width: var(--container);
  margin: 0 auto;
  padding: 36px 24px;
  border-bottom: 1px solid var(--line);
}

.step-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  border-top: 1px solid var(--line);
  padding-top: 22px;
}

.step-item {
  min-width: 0;
  padding-right: 8px;
  border-right: 1px solid var(--line);
}

.step-item:last-child {
  border-right: 0;
  padding-right: 0;
}

.step-num {
  display: block;
  margin-bottom: 8px;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.step-title {
  font-size: 1rem;
  margin: 0 0 6px;
}

.step-text {
  font-size: 0.9rem;
  color: var(--text-soft);
  margin: 0;
}

.prep-more {
  margin: 20px 0 0;
}

/* 编辑原则 */
.principles {
  max-width: var(--container);
  margin: 0 auto;
  padding: 36px 24px;
  border-bottom: 1px solid var(--line);
}

.principles-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 40px;
  align-items: start;
}

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

.principles-main h2 {
  font-size: 1.15rem;
  margin: 0 0 18px;
}

.principle-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.principle-item {
  display: grid;
  grid-template-columns: 2.4em minmax(0, 1fr);
  gap: 4px 12px;
  align-items: start;
}

.principle-num {
  grid-row: 1 / span 2;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  padding-top: 2px;
}

.principle-title {
  font-size: 0.98rem;
  margin: 0;
}

.principle-text {
  font-size: 0.9rem;
  color: var(--text-soft);
  margin: 0;
  max-width: 40em;
}

.principles-aside {
  min-width: 0;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.principles-aside h3 {
  font-size: 0.98rem;
  margin: 0 0 10px;
}

.principles-aside .principle-text {
  margin: 0 0 16px;
}

/* 页脚前双入口带（首页） */
.entry-band {
  max-width: var(--container);
  margin: 0 auto;
  padding: 32px 24px;
}

.home-main .entry-band {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.band-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.16s ease;
}

.band-card:hover {
  border-color: var(--accent-soft);
}

.band-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.band-desc {
  font-size: 0.88rem;
  color: var(--text-soft);
}

/* --------------------------------------------------------------------------
   pages：频道分类
   -------------------------------------------------------------------------- */
.page-hero-text {
  min-width: 0;
}

.page-channels .page-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 36px;
  align-items: center;
}

.page-hero-lead {
  font-size: 1rem;
  color: var(--text-soft);
  margin: 0 0 10px;
  max-width: 42em;
}

.page-hero-meta {
  font-size: 0.84rem;
  color: var(--text-soft);
  margin: 0;
  font-variant-numeric: tabular-nums;
}

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

.page-hero-media img {
  aspect-ratio: 4 / 3;
}

.page-hero-media figcaption {
  margin-top: 8px;
}

.channel-questions {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

.question-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 32px;
}

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

.question-text {
  margin: 0 0 6px;
  font-size: 0.94rem;
}

.question-link {
  font-size: 0.86rem;
  color: var(--accent);
}

.question-link:hover {
  color: var(--accent-soft);
}

.channel-list {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

.channel-row {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 20px 28px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.channel-name {
  font-size: 1rem;
  margin: 0;
  grid-column: 1;
  grid-row: 1;
}

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

.channel-label {
  display: block;
  margin-bottom: 4px;
  font-size: 0.78rem;
  color: var(--accent);
}

.channel-field p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-soft);
}

.channel-unsuitable {
  grid-column: 1 / -1;
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-size: 0.86rem;
  color: var(--text-soft);
}

.combo-guide {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

.combo-guide p {
  max-width: 52em;
  font-size: 0.94rem;
  color: var(--text-soft);
}

.combo-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 0;
}

.choose-steps {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

.choose-steps .step-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.choose-steps .step-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.step-index {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.step-rule {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-soft);
}

.page-channels .entry-band {
  padding: 32px 0 0;
}

.page-channels .entry-band .section-title {
  margin-bottom: 16px;
}

.entry-band-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.entry-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.16s ease;
}

.entry-card:hover {
  border-color: var(--accent-soft);
}

.entry-card-title {
  font-size: 1rem;
  margin: 0;
  color: var(--text);
}

.entry-card-desc {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-soft);
}

/* --------------------------------------------------------------------------
   pages：年份归档
   -------------------------------------------------------------------------- */
.year-jump {
  position: sticky;
  top: 64px;
  z-index: 20;
  padding: 12px 0;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

.year-jump-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.year-jump-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 6px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  transition: color 0.16s ease, border-color 0.16s ease;
}

.year-jump-link:hover {
  color: var(--accent);
  border-color: var(--accent-soft);
}

.year-jump-link.is-current {
  color: var(--accent);
  border-color: var(--accent);
}

.archive-year {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 130px;
}

.archive-table {
  font-size: 0.9rem;
}

.archive-table th,
.archive-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.archive-table thead th {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-soft);
  border-bottom: 1px solid var(--line-strong);
  white-space: nowrap;
}

.archive-table tbody tr:hover {
  background: var(--surface);
}

.archive-table td:first-child {
  color: var(--text);
  font-weight: 500;
}

.archive-table td {
  color: var(--text-soft);
}

.archive-table td a {
  color: var(--accent);
}

.archive-table td a:hover {
  color: var(--accent-soft);
}

.archive-basis {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

.archive-figure {
  margin: 0 0 20px;
  max-width: 640px;
}

.archive-figure img {
  aspect-ratio: 16 / 9;
}

.archive-figure figcaption {
  margin-top: 8px;
}

.basis-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 52em;
}

.basis-list li {
  font-size: 0.92rem;
  color: var(--text-soft);
  padding-left: 18px;
  position: relative;
}

.basis-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-soft);
}

.cross-view {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

.cross-view-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
}

.cross-link {
  font-size: 0.92rem;
  color: var(--accent);
  border-bottom: 1px solid transparent;
}

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

.entry-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  padding: 32px 0 0;
}

.entry-strip-item {
  min-width: 0;
  padding: 20px 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.entry-strip-title {
  font-size: 1rem;
  margin: 0 0 8px;
}

.entry-strip-item p {
  margin: 0 0 12px;
  font-size: 0.88rem;
  color: var(--text-soft);
}

.entry-strip-link {
  font-size: 0.88rem;
  color: var(--accent);
}

.entry-strip-link:hover {
  color: var(--accent-soft);
}

/* --------------------------------------------------------------------------
   pages：专题档案
   -------------------------------------------------------------------------- */
.page-topics .page-head {
  padding: 14px 0 26px;
  border-bottom: 1px solid var(--line);
}

.page-head-inner {
  max-width: 44em;
}

.topic-feature {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 40px;
  align-items: start;
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

.topic-feature-media {
  min-width: 0;
}

.topic-figure img {
  aspect-ratio: 4 / 3;
}

.topic-figure-caption {
  margin-top: 8px;
}

.topic-feature-summary {
  min-width: 0;
}

.topic-feature-summary h2 {
  font-size: 1.25rem;
  margin: 0 0 12px;
}

.topic-feature-summary p {
  font-size: 0.94rem;
  color: var(--text-soft);
  margin: 0 0 12px;
}

.topic-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.topic-tag {
  padding: 4px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 0.82rem;
  color: var(--text-soft);
}

.topic-params {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

.table-wrap {
  overflow-x: auto;
}

.param-table {
  font-size: 0.92rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.param-table th,
.param-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.param-table tr:last-child th,
.param-table tr:last-child td {
  border-bottom: 0;
}

.param-table th {
  width: 180px;
  font-weight: 600;
  color: var(--text);
  background: var(--surface);
  white-space: nowrap;
}

.param-table td {
  color: var(--text-soft);
}

.topic-items {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

.item-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.item-row {
  display: grid;
  grid-template-columns: 2.6em minmax(0, 1fr);
  gap: 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.item-index {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  padding-top: 2px;
}

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

.item-title {
  font-size: 0.98rem;
  margin: 0 0 4px;
}

.item-body p {
  margin: 0 0 6px;
  font-size: 0.9rem;
  color: var(--text-soft);
  max-width: 46em;
}

.item-tag {
  display: inline-block;
  padding: 2px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 0.78rem;
  color: var(--text-soft);
}

.related-topics {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

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

.related-card {
  min-width: 0;
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.related-title {
  font-size: 0.98rem;
  margin: 0;
}

.related-card p {
  margin: 0;
  font-size: 0.86rem;
  color: var(--text-soft);
}

.related-link {
  font-size: 0.86rem;
  color: var(--accent);
  margin-top: 4px;
}

.related-link:hover {
  color: var(--accent-soft);
}

.related-year {
  margin: 18px 0 0;
  font-size: 0.88rem;
}

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

.page-topics .entry-band {
  padding: 32px 0 0;
}

.entry-band-inner {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.entry-band-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.16s ease;
}

.entry-band-item:hover {
  border-color: var(--accent-soft);
}

.entry-band-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.entry-band-desc {
  font-size: 0.88rem;
  color: var(--text-soft);
}

.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
  padding: 24px 0 0;
  font-size: 0.88rem;
}

.related-links-label {
  color: var(--text-soft);
}

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

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

/* --------------------------------------------------------------------------
   pages：编辑手记
   -------------------------------------------------------------------------- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

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

.page-editor-notes .page-header .page-lead {
  margin-top: 10px;
}

.note-article {
  min-width: 0;
  padding: 28px 0 8px;
}

.note-figure {
  margin: 0 0 24px;
}

.note-figure img {
  aspect-ratio: 16 / 9;
}

.note-figure-caption {
  margin-top: 8px;
}

.note-intro {
  font-size: 1rem;
  color: var(--text-soft);
  margin: 0 0 8px;
}

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

.note-section .section-title {
  margin-bottom: 6px;
}

.record-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
  margin-top: 16px;
}

.record-item {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.record-head {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin-bottom: 8px;
  font-size: 0.8rem;
  color: var(--text-soft);
  font-variant-numeric: tabular-nums;
}

.record-batch {
  color: var(--accent);
  font-weight: 600;
}

.record-date {
  color: var(--text-soft);
}

.record-title {
  font-size: 0.98rem;
  margin: 0 0 6px;
}

.record-text {
  font-size: 0.92rem;
  color: var(--text-soft);
  margin: 0 0 8px;
  max-width: 44em;
}

.record-affected {
  margin: 0;
  font-size: 0.86rem;
  color: var(--text-soft);
}

.record-affected a {
  color: var(--accent);
}

.record-affected a:hover {
  color: var(--accent-soft);
}

.criteria-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 16px;
}

.criteria-item {
  display: grid;
  grid-template-columns: 2.4em minmax(0, 1fr);
  gap: 4px 12px;
  align-items: start;
}

.criteria-num {
  grid-row: 1 / span 2;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  padding-top: 2px;
}

.criteria-title {
  font-size: 0.98rem;
  margin: 0;
}

.criteria-text {
  font-size: 0.9rem;
  color: var(--text-soft);
  margin: 0;
  max-width: 40em;
}

.criteria-counter {
  display: block;
  min-width: 220px;
  max-width: 100%;
  font-size: 0.86rem;
  color: var(--text-soft);
  margin-top: 6px;
}

.fix-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 14px;
}

.fix-item {
  font-size: 0.92rem;
  color: var(--text-soft);
  padding-left: 18px;
  position: relative;
}

.fix-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-soft);
}

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

.fix-note {
  margin: 16px 0 0;
  font-size: 0.9rem;
  color: var(--text-soft);
}

.page-editor-notes .entry-band {
  padding: 32px 16px 0;
}

.page-editor-notes .entry-band-inner {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  padding: 0;
}

.page-editor-notes .entry-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.entry-label {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.entry-text {
  font-size: 0.88rem;
  color: var(--text-soft);
}

/* --------------------------------------------------------------------------
   pages：观看准备
   -------------------------------------------------------------------------- */
.page-hero-inner {
  max-width: 52em;
}

.guide-checklist {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

.checklist-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
  padding-top: 22px;
}

.checklist-item {
  min-width: 0;
  padding: 0 24px;
  border-right: 1px solid var(--line);
}

.checklist-item:first-child {
  padding-left: 0;
}

.checklist-item:last-child {
  border-right: 0;
  padding-right: 0;
}

.checklist-heading {
  font-size: 1rem;
  margin: 0 0 12px;
}

.checklist-points {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
}

.checklist-points li {
  position: relative;
  padding-left: 16px;
  font-size: 0.9rem;
  color: var(--text-soft);
}

.checklist-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-soft);
}

.checklist-verdict {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 0.86rem;
  color: var(--text);
}

.guide-reading {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

.reading-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 36px;
  align-items: start;
}

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

.reading-figure img {
  aspect-ratio: 4 / 3;
}

.figure-caption {
  margin-top: 8px;
}

.reading-notes {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.reading-note {
  min-width: 0;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.reading-note:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.reading-heading {
  font-size: 0.98rem;
  margin: 0 0 6px;
}

.reading-note p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-soft);
  max-width: 42em;
}

.guide-faq {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 52px;
  padding: 12px 0;
  font-size: 0.96rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  flex: none;
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--accent);
  transition: transform 0.16s ease;
}

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

.faq-question:hover {
  color: var(--accent);
}

.faq-answer {
  padding: 0 0 16px;
}

.faq-answer p {
  margin: 0 0 10px;
  font-size: 0.92rem;
  color: var(--text-soft);
  max-width: 46em;
}

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

.page-viewing-guide .entry-band {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  padding: 32px 0 0;
}

.page-viewing-guide .entry-band-item {
  min-width: 0;
  padding: 20px 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-viewing-guide .entry-band-item h2 {
  font-size: 1rem;
  margin: 0 0 8px;
}

.page-viewing-guide .entry-band-desc {
  margin: 0 0 12px;
}

.entry-band-link {
  font-size: 0.88rem;
  color: var(--accent);
}

.entry-band-link:hover {
  color: var(--accent-soft);
}

/* --------------------------------------------------------------------------
   pages：收录说明
   -------------------------------------------------------------------------- */
.page-shell {
  min-width: 0;
}

.page-inclusion .page-hero {
  padding: 14px 0 26px;
}

.comparison-section {
  padding-top: 32px;
}

.scope-figure {
  margin: 0 0 24px;
  max-width: 720px;
}

.scope-figure img {
  aspect-ratio: 16 / 9;
}

.scope-figure-caption {
  margin-top: 8px;
}

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

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

.comparison-divider {
  width: 1px;
  align-self: stretch;
  background: var(--line);
}

.comparison-title {
  font-size: 1rem;
  margin: 0 0 14px;
}

.comparison-col-out .comparison-title {
  color: var(--text-soft);
}

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

.comparison-item {
  position: relative;
  padding-left: 18px;
  font-size: 0.92rem;
  color: var(--text-soft);
}

.comparison-col-in .comparison-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-soft);
}

.comparison-col-out .comparison-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 1px;
  background: var(--line-strong);
}

.comparison-tag {
  display: inline-block;
  margin-right: 6px;
  font-size: 0.78rem;
  color: var(--accent);
}

.principles-section .principle-list {
  margin-top: 16px;
}

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

.principle-body p {
  margin: 4px 0 0;
  font-size: 0.9rem;
  color: var(--text-soft);
  max-width: 44em;
}

.revision-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 36px;
  align-items: start;
}

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

.revision-main > p {
  font-size: 0.94rem;
  color: var(--text-soft);
  max-width: 46em;
  margin: 0 0 16px;
}

.revision-points {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.revision-point {
  font-size: 0.92rem;
  color: var(--text-soft);
  padding-left: 18px;
  position: relative;
}

.revision-point::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-soft);
}

.revision-point-label {
  color: var(--text);
  font-weight: 600;
}

.revision-aside {
  min-width: 0;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.revision-aside-title {
  font-size: 0.98rem;
  margin: 0 0 10px;
}

.revision-aside-text {
  margin: 0 0 14px;
  font-size: 0.88rem;
  color: var(--text-soft);
}

.revision-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.revision-links a {
  font-size: 0.88rem;
  color: var(--accent);
}

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

.page-inclusion .entry-band {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  padding: 32px 0 0;
}

.page-inclusion .entry-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.entry-card-text {
  font-size: 0.88rem;
  color: var(--text-soft);
}

/* --------------------------------------------------------------------------
   pages：404
   -------------------------------------------------------------------------- */
.error-main {
  padding: 72px 24px 60px;
}

.error-inner {
  max-width: 640px;
  margin: 0 auto;
}

.error-code {
  margin: 0 0 10px;
  font-size: 0.9rem;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.error-inner h1 {
  font-size: clamp(1.65rem, 3.2vw, 2.35rem);
  margin: 0 0 14px;
}

.error-lead {
  font-size: 1rem;
  color: var(--text-soft);
  margin: 0 0 24px;
  max-width: 34em;
}

.error-action {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 22px;
  margin: 0 0 40px;
}

.error-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 22px;
  border-radius: var(--radius);
  background: var(--accent);
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 600;
}

.error-btn:hover {
  background: var(--accent-soft);
  color: #ffffff;
}

.error-link {
  font-size: 0.92rem;
  color: var(--accent);
  border-bottom: 1px solid transparent;
}

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

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

.error-hint h2 {
  font-size: 1rem;
  margin: 0 0 14px;
}

.error-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.error-list li {
  position: relative;
  padding-left: 18px;
  font-size: 0.9rem;
  color: var(--text-soft);
}

.error-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-soft);
}

/* --------------------------------------------------------------------------
   responsive：1080 / 760 / 480
   -------------------------------------------------------------------------- */
@media (max-width: 1080px) {
  .hero-inner {
    gap: 32px;
  }

  .triple-grid {
    grid-template-columns: 5fr 4fr 3fr;
    gap: 24px;
  }

  .principles-grid {
    grid-template-columns: minmax(0, 1fr) 240px;
    gap: 28px;
  }

  .channel-row {
    grid-template-columns: 160px minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr);
    gap: 16px 20px;
  }

  .revision-grid {
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 28px;
  }
}

@media (max-width: 900px) {
  .triple-grid {
    grid-template-columns: 5fr 4fr;
  }

  .triple-notes {
    grid-column: 1 / -1;
    padding-top: 20px;
    border-top: 1px solid var(--line);
  }
}

@media (max-width: 760px) {
  .header-inner {
    height: 60px;
    padding: 0 16px;
    gap: 12px;
  }

  .brand {
    font-size: 1.05rem;
  }

  .theme-toggle {
    margin-left: auto;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex: none;
    min-width: 0;
    padding: 8px 16px 14px;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

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

  .nav-link {
    display: flex;
    align-items: center;
    min-height: 46px;
    padding: 10px 4px;
    font-size: 0.98rem;
    border-bottom: 1px solid var(--line);
  }

  .nav-list li:last-child .nav-link {
    border-bottom: 0;
  }

  .nav-link.is-current {
    border-bottom-color: var(--line);
    color: var(--accent);
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    padding: 32px 16px 30px;
    gap: 26px;
  }

  .hero-lead {
    max-width: none;
  }

  .topic-strip,
  .triple,
  .year-glance,
  .prep-steps,
  .principles,
  .entry-band {
    padding-left: 16px;
    padding-right: 16px;
  }

  .triple-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
  }

  .triple-notes {
    padding-top: 0;
    border-top: 0;
  }

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

  .year-enter {
    justify-self: start;
  }

  .step-list,
  .choose-steps .step-list {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

  .step-item {
    border-right: 0;
    padding: 0 0 18px;
    border-bottom: 1px solid var(--line);
  }

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

  .principles-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .home-main .entry-band,
  .entry-band-grid,
  .entry-strip,
  .entry-band-inner,
  .page-viewing-guide .entry-band,
  .page-inclusion .entry-band,
  .page-editor-notes .entry-band-inner {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .breadcrumb {
    padding-top: 16px;
  }

  .page-header {
    padding: 12px 0 6px;
  }

  .page-channels .page-hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
  }

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

  .channel-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .channel-name {
    grid-column: 1;
  }

  .channel-unsuitable {
    grid-column: 1;
  }

  .year-jump {
    top: 60px;
  }

  .archive-year {
    scroll-margin-top: 120px;
  }

  .archive-table thead {
    display: none;
  }

  .archive-table,
  .archive-table tbody,
  .archive-table tr,
  .archive-table td {
    display: block;
    width: 100%;
  }

  .archive-table tr {
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
  }

  .archive-table td {
    padding: 2px 0;
    border-bottom: 0;
  }

  .archive-table td::before {
    content: attr(data-label);
    display: inline-block;
    min-width: 5.5em;
    color: var(--text-soft);
    font-size: 0.8rem;
  }

  .topic-feature {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
  }

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

  .param-table th {
    width: auto;
    white-space: normal;
  }

  .reading-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
  }

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

  .checklist-item {
    padding: 18px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .checklist-item:first-child {
    padding-top: 0;
  }

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

  .comparison-columns {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .comparison-divider {
    display: none;
  }

  .revision-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .content-container,
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px 24px;
    padding: 32px 16px 24px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-scope {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    padding: 14px 16px 24px;
  }

  .error-main {
    padding: 48px 16px 44px;
  }
}

@media (max-width: 480px) {
  .hero-text h1,
  .page-title,
  .error-inner h1 {
    font-size: 1.5rem;
  }

  .hero-actions {
    gap: 14px;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
  }

  .hero-actions .text-link {
    display: block;
  }

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

  .strip-tag {
    padding: 8px 14px;
    font-size: 0.86rem;
  }

  .entry-row {
    gap: 8px;
  }

  .item-row {
    grid-template-columns: 2em minmax(0, 1fr);
    gap: 8px;
  }

  .principle-item,
  .criteria-item {
    grid-template-columns: 2em minmax(0, 1fr);
    gap: 2px 10px;
  }

  .criteria-counter {
    min-width: 0;
  }

  .archive-table td::before {
    min-width: 4.6em;
  }
}