/* ==========================================================================
   爆料公社 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base · 变量、重置、排版基础
   -------------------------------------------------------------------------- */

:root {
  --canvas: #F7F5F0;
  --ink: #10151C;
  --ink-block: #0F1A24;
  --accent: #C43A16;
  --link: #0B4BC4;
  --mark: #F2C230;
  --muted: #5A6470;
  --white: #FFFFFF;
  --line: #10151C;
  --line-soft: #C9C4B8;
  --radius: 4px;
  --container: 1160px;
  --gutter: 24px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

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

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

body {
  margin: 0;
  background-color: var(--canvas);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.75;
  font-weight: 400;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 700;
  line-height: 1.25;
  color: var(--ink);
}

p {
  margin: 0;
}

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

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

a {
  color: var(--link);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  text-decoration-thickness: 2px;
  background-color: var(--mark);
  color: var(--ink);
}

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

strong {
  font-weight: 700;
}

figure {
  margin: 0;
}

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

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

.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;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 10px 16px;
  background-color: var(--ink-block);
  color: var(--white);
  font-size: 15px;
  text-decoration: underline;
  border-radius: var(--radius);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
  background-color: var(--ink-block);
  color: var(--white);
}

/* --------------------------------------------------------------------------
   layout · 页头、导航、主容器、面包屑、页脚
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--canvas);
  border-bottom: 2px solid var(--ink);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px var(--gutter);
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-decoration: none;
  color: var(--ink);
  min-width: 0;
}

.brand:hover {
  background-color: transparent;
}

.brand-name {
  font-size: 22px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--ink);
}

.brand-slogan {
  font-size: 12px;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  color: var(--muted);
}

.primary-nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
}

.primary-nav a {
  display: inline-block;
  padding: 10px 12px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  border-radius: var(--radius);
}

.primary-nav a:hover {
  background-color: var(--mark);
  text-decoration: underline;
  text-decoration-thickness: 2px;
}

.primary-nav a.is-current {
  font-weight: 800;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
  color: var(--accent);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  background-color: var(--canvas);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  cursor: pointer;
}

.menu-toggle-bar {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--ink);
}

.mobile-menu {
  border-bottom: 2px solid var(--ink);
  background-color: var(--white);
}

.mobile-menu[hidden] {
  display: none;
}

.mobile-menu ul {
  max-width: var(--container);
  margin: 0 auto;
  padding: 8px var(--gutter) 16px;
}

.mobile-menu li + li {
  border-top: 1px solid var(--line-soft);
}

.mobile-menu a {
  display: block;
  padding: 12px 4px;
  min-height: 44px;
  font-size: 16px;
  color: var(--ink);
  text-decoration: none;
}

.mobile-menu a:hover {
  background-color: var(--mark);
  text-decoration: underline;
}

.site-main {
  display: block;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

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

.inner-main {
  padding-top: 20px;
  padding-bottom: 48px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 4px 0 18px;
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  color: var(--muted);
}

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

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

.breadcrumb-current {
  color: var(--ink);
  font-weight: 700;
}

.page-header {
  padding: 0 0 20px;
  border-bottom: 1.5px solid var(--ink);
  margin-bottom: 28px;
}

.page-title {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--ink);
  max-width: 900px;
}

.page-description {
  margin-top: 12px;
  font-size: 18px;
  font-weight: 500;
  line-height: 1.7;
  color: var(--ink);
  max-width: 760px;
}

.page-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.site-footer {
  margin-top: 64px;
  background-color: var(--ink-block);
  color: var(--white);
  border-top: 2px solid var(--ink);
}

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

.footer-top {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(0, 2fr);
  gap: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.28);
}

.footer-brand-name {
  font-size: 20px;
  font-weight: 800;
  color: var(--white);
}

.footer-brand-desc {
  margin-top: 8px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.82);
  max-width: 320px;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.footer-col-title {
  font-size: 14px;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  font-weight: 700;
  color: var(--mark);
  margin-bottom: 10px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-col a {
  display: inline-block;
  padding: 4px 0;
  min-height: 32px;
  font-size: 15px;
  color: var(--white);
  text-decoration: underline;
  text-decoration-thickness: 1px;
}

.footer-col a:hover {
  background-color: var(--mark);
  color: var(--ink);
  text-decoration-thickness: 2px;
}

.footer-boundary {
  padding: 20px 0 12px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.82);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-bottom {
  padding-top: 16px;
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  color: rgba(255, 255, 255, 0.7);
}

/* --------------------------------------------------------------------------
   components · 通用小部件
   -------------------------------------------------------------------------- */

.meta-tag {
  display: inline-block;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  line-height: 1.6;
  color: var(--ink);
  background-color: var(--white);
  border: 1px solid var(--ink);
  border-radius: var(--radius);
}

.meta-stage {
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 700;
}

.btn-primary {
  display: inline-block;
  padding: 12px 22px;
  min-height: 44px;
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  background-color: var(--ink-block);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.btn-primary:hover {
  background-color: var(--accent);
  color: var(--white);
  text-decoration-thickness: 2px;
}

.section-title {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--ink);
  padding-bottom: 10px;
  border-bottom: 1.5px solid var(--ink);
  margin-bottom: 20px;
}

.section-intro {
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 780px;
  margin-bottom: 20px;
}

.section-foot {
  margin-top: 18px;
  font-size: 15px;
}

.section-foot a {
  font-weight: 700;
}

.section-next {
  margin-top: 16px;
  font-size: 15px;
}

.section-next a {
  font-weight: 700;
}

.section-note {
  margin-top: 12px;
  padding: 10px 14px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
  background-color: var(--mark);
  border-radius: var(--radius);
}

/* 表格通用外壳 */
.table-scroll,
.table-wrap {
  overflow-x: auto;
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  background-color: var(--white);
}

.channel-table,
.data-table {
  min-width: 620px;
  font-size: 15px;
}

.channel-table caption,
.data-table caption {
  text-align: left;
}

.table-caption {
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--muted);
  text-align: left;
}

.channel-table thead th,
.data-table thead th {
  padding: 12px 14px;
  text-align: left;
  font-size: 14px;
  font-weight: 700;
  color: var(--white);
  background-color: var(--ink-block);
  border-right: 1px solid rgba(255, 255, 255, 0.24);
  vertical-align: bottom;
}

.channel-table thead th:last-child,
.data-table thead th:last-child {
  border-right: 0;
}

.channel-table tbody th,
.data-table tbody th {
  padding: 14px;
  text-align: left;
  font-weight: 700;
  border-top: 1.5px solid var(--ink);
  border-right: 1.5px solid var(--ink);
  vertical-align: top;
  min-width: 120px;
}

.channel-table tbody td,
.data-table tbody td {
  padding: 14px;
  border-top: 1.5px solid var(--ink);
  border-right: 1px solid var(--line-soft);
  vertical-align: top;
  line-height: 1.7;
}

.channel-table tbody td:last-child,
.data-table tbody td:last-child {
  border-right: 0;
}

.channel-table tbody tr:nth-child(even),
.data-table tbody tr:nth-child(even) {
  background-color: #EFEBE2;
}

.channel-table tbody tr:hover,
.data-table tbody tr:hover {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.channel-table tbody th a,
.data-table tbody th a {
  font-weight: 700;
}

/* 步骤清单（首页、频道索引、入口核验共用结构） */
.step-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  counter-reset: none;
}

.step-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 14px;
  min-height: 44px;
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
}

.step-item .step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  border: 1.5px solid var(--accent);
  border-radius: 50%;
}

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

.step-item h3 {
  font-size: 18px;
  margin-bottom: 4px;
}

.step-item p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

/* 折叠问答 */
.faq-item {
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
}

.faq-item + .faq-item {
  margin-top: 10px;
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 44px;
  padding: 12px 16px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

.faq-item summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
}

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

.faq-item[open] summary {
  border-bottom: 1.5px solid var(--ink);
}

.faq-item summary:hover {
  background-color: var(--mark);
}

.faq-item p {
  padding: 14px 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

/* 相关入口列表 */
.related-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.related-list li,
.related-item {
  padding: 12px 14px;
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  font-size: 15px;
  line-height: 1.7;
}

.related-list a,
.related-item a {
  font-weight: 700;
}

.related-desc,
.related-item p {
  display: block;
  margin-top: 4px;
  font-size: 14px;
  color: var(--muted);
}

/* 图片与图注 */
.hero-media img,
.topic-media img,
.topic-figure img,
.note-figure img,
.channel-figure img,
.section-figure img,
.archive-figure img,
.example-figure img,
.writing-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  background-color: var(--white);
}

figcaption,
.figure-caption,
.fig-caption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  line-height: 1.6;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   pages · 首页
   -------------------------------------------------------------------------- */

/* 首屏事实块 */
.hero {
  padding: 36px 0 28px;
  border-bottom: 1.5px solid var(--ink);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  gap: 40px;
  align-items: start;
}

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

.hero-copy h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--ink);
}

.hero-lead {
  margin-top: 16px;
  font-size: 18px;
  font-weight: 500;
  line-height: 1.7;
  color: var(--ink);
  max-width: 560px;
}

.hero-facts {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1.5px solid var(--line-soft);
}

.hero-facts li {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  font-size: 15px;
  line-height: 1.7;
}

.fact-label {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.fact-value {
  color: var(--ink);
}

.hero-cta {
  margin-top: 24px;
}

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

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

/* 快速入口条 */
.quick-entry {
  padding: 28px 0;
  border-bottom: 1.5px solid var(--ink);
}

.quick-entry .section-title {
  font-size: 22px;
  border-bottom: 0;
  padding-bottom: 0;
  margin-bottom: 14px;
}

.entry-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.entry-list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 14px;
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

.entry-list a {
  font-size: 16px;
  font-weight: 700;
  color: var(--link);
}

/* 本期结论摘要 */
.conclusion {
  padding: 32px 0;
  border-bottom: 1.5px solid var(--ink);
}

.conclusion-grid {
  display: grid;
  grid-template-columns: 5fr 4fr 3fr;
  gap: 0;
  background-color: var(--ink-block);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  color: var(--white);
}

.conclusion-col {
  padding: 22px 20px;
  min-width: 0;
}

.conclusion-col + .conclusion-col {
  border-left: 1px solid rgba(255, 255, 255, 0.24);
}

.conclusion-col h3 {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  font-weight: 700;
  color: var(--mark);
  margin-bottom: 10px;
}

.conclusion-col p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--white);
}

.conclusion-col a {
  color: var(--white);
  text-decoration: underline;
}

.conclusion-col a:hover {
  background-color: var(--mark);
  color: var(--ink);
}

.conclusion-next p {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-start;
}

/* 频道索引表区块 */
.channel-table-section {
  padding: 32px 0;
  border-bottom: 1.5px solid var(--ink);
}

/* 专题观察卡组 */
.topic-cards {
  padding: 32px 0;
  border-bottom: 1.5px solid var(--ink);
}

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

.topic-card {
  display: flex;
  flex-direction: column;
  padding: 14px;
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  min-width: 0;
}

.topic-card .topic-media {
  margin-bottom: 12px;
}

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

.topic-card .meta-tag {
  align-self: flex-start;
  margin-bottom: 8px;
}

.topic-card h3 {
  font-size: 20px;
  line-height: 1.4;
  margin-bottom: 8px;
}

.topic-card p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.topic-card .card-link {
  margin-top: auto;
  padding-top: 12px;
  font-size: 15px;
  font-weight: 700;
}

/* 来源与方法 */
.method-section {
  padding: 32px 0;
  border-bottom: 1.5px solid var(--ink);
}

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

.method-points h3,
.method-note h3 {
  font-size: 20px;
  margin-bottom: 12px;
}

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

.method-list li {
  padding: 10px 14px;
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.method-list li strong {
  display: block;
  margin-bottom: 2px;
  color: var(--accent);
}

.method-link {
  margin-top: 14px;
  font-size: 15px;
  font-weight: 700;
}

.method-note {
  min-width: 0;
}

.method-note > p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  margin-bottom: 16px;
}

.note-figure {
  margin-bottom: 8px;
}

.note-figure img {
  aspect-ratio: 3 / 2;
}

/* 更新记录摘要 */
.update-summary {
  padding: 32px 0;
  border-bottom: 1.5px solid var(--ink);
}

.update-nodes {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-left: 2px solid var(--ink);
  margin-left: 8px;
  padding-left: 22px;
}

.update-node {
  position: relative;
  padding: 0 0 20px;
  min-width: 0;
}

.update-node:last-child {
  padding-bottom: 0;
}

.update-node::before {
  content: "";
  position: absolute;
  left: -29px;
  top: 6px;
  width: 12px;
  height: 12px;
  background-color: var(--canvas);
  border: 2px solid var(--accent);
  border-radius: 50%;
}

.update-node .meta-stage {
  margin-bottom: 6px;
}

.update-node p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
  margin-bottom: 4px;
  max-width: 760px;
}

.update-node a {
  font-size: 15px;
  font-weight: 700;
}

/* 入口核验五步 */
.entry-steps {
  padding: 32px 0;
  border-bottom: 1.5px solid var(--ink);
}

/* 常见疑问 */
.faq-section {
  padding: 32px 0;
  border-bottom: 1.5px solid var(--ink);
}

.faq-list {
  max-width: 860px;
}

/* 编辑边界摘要 */
.boundary-section {
  padding: 32px 0 8px;
}

.boundary-grid {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  gap: 28px;
  align-items: start;
}

.boundary-list h3,
.boundary-links h3 {
  font-size: 20px;
  margin-bottom: 12px;
}

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

.boundary-list li {
  padding: 10px 14px;
  font-size: 15px;
  line-height: 1.7;
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
}

.boundary-links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.boundary-links li {
  padding: 12px 14px;
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  font-size: 15px;
  line-height: 1.7;
}

.boundary-links li a {
  display: block;
  font-weight: 700;
}

.boundary-links li span {
  display: block;
  margin-top: 2px;
  font-size: 14px;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   pages · 频道索引
   -------------------------------------------------------------------------- */

.page-hero {
  padding-bottom: 24px;
  border-bottom: 1.5px solid var(--ink);
  margin-bottom: 28px;
}

.page-summary {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.7;
  color: var(--ink);
  max-width: 780px;
}

.page-hero .page-meta {
  margin-top: 14px;
}

.conclusion-block {
  padding: 22px 20px;
  margin-bottom: 32px;
  background-color: var(--ink-block);
  color: var(--white);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
}

.conclusion-block h2,
.conclusion-block .conclusion-title {
  font-size: 20px;
  color: var(--white);
  margin-bottom: 10px;
}

.conclusion-lead {
  font-size: 16px;
  line-height: 1.75;
  color: var(--white);
  max-width: 820px;
}

.conclusion-scope {
  margin-top: 10px;
  font-size: 14px;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.82);
}

.conclusion-points {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 14px;
}

.conclusion-points li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--white);
}

.conclusion-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 8px;
  background-color: var(--mark);
  border-radius: 1px;
}

.question-list {
  margin-bottom: 32px;
}

.question-list h2 {
  font-size: 28px;
  padding-bottom: 10px;
  border-bottom: 1.5px solid var(--ink);
  margin-bottom: 18px;
}

.question-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

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

.question-item h3 {
  font-size: 19px;
  line-height: 1.45;
  margin-bottom: 8px;
}

.question-item p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  max-width: 820px;
}

.question-item p + p {
  margin-top: 8px;
}

.channel-notes {
  margin-bottom: 32px;
}

.channel-notes h2 {
  font-size: 28px;
  padding-bottom: 10px;
  border-bottom: 1.5px solid var(--ink);
  margin-bottom: 18px;
}

.channel-notes-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.channel-note {
  padding: 16px;
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  min-width: 0;
}

.channel-note h3 {
  font-size: 20px;
  margin-bottom: 8px;
}

.channel-note p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

.channel-note .channel-reading {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed var(--line-soft);
  font-size: 14px;
  color: var(--muted);
}

.channel-figure {
  margin-bottom: 32px;
}

.channel-figure img {
  aspect-ratio: 16 / 8;
}

.check-steps {
  margin-bottom: 32px;
}

.check-steps h2 {
  font-size: 28px;
  padding-bottom: 10px;
  border-bottom: 1.5px solid var(--ink);
  margin-bottom: 18px;
}

.check-steps .step-list {
  max-width: 860px;
}

.check-steps .step-list li {
  padding: 12px 0 12px 44px;
  position: relative;
  min-height: 44px;
  border-bottom: 1px solid var(--line-soft);
  counter-increment: checkstep;
}

.check-steps .step-list {
  counter-reset: checkstep;
}

.check-steps .step-list li::before {
  content: counter(checkstep);
  position: absolute;
  left: 0;
  top: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  border: 1.5px solid var(--accent);
  border-radius: 50%;
}

.check-steps .step-list h3 {
  font-size: 18px;
  margin-bottom: 2px;
}

.check-steps .step-list p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.related-links {
  padding-top: 24px;
  border-top: 1.5px solid var(--ink);
}

.related-links h2 {
  font-size: 22px;
  margin-bottom: 14px;
}

.related-links .related-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

/* --------------------------------------------------------------------------
   pages · 专题观察
   -------------------------------------------------------------------------- */

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 8fr) minmax(240px, 4fr);
  gap: 32px;
  align-items: start;
  max-width: var(--container);
  margin: 0 auto;
  padding: 20px var(--gutter) 48px;
}

.page-layout .inner-main {
  max-width: none;
  margin: 0;
  padding: 0;
}

.page-title-block {
  padding-bottom: 24px;
  border-bottom: 1.5px solid var(--ink);
  margin-bottom: 28px;
}

.page-lead {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.7;
  color: var(--ink);
  max-width: 720px;
}

.meta-line {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.topic-conclusion {
  margin-bottom: 32px;
}

.topic-conclusion h2 {
  font-size: 28px;
  padding-bottom: 10px;
  border-bottom: 1.5px solid var(--ink);
  margin-bottom: 16px;
}

.topic-conclusion p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  max-width: 720px;
}

.topic-conclusion p + p {
  margin-top: 8px;
  font-size: 15px;
  color: var(--muted);
}

.topic-groups {
  margin-bottom: 32px;
}

.topic-groups > h2 {
  font-size: 28px;
  padding-bottom: 10px;
  border-bottom: 1.5px solid var(--ink);
  margin-bottom: 20px;
}

.topic-group {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-soft);
}

.topic-group:last-child {
  border-bottom: 0;
}

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

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

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

.topic-body .meta-tag {
  margin-bottom: 8px;
}

.topic-body h2 {
  font-size: 24px;
  line-height: 1.35;
  margin-bottom: 8px;
}

.topic-summary {
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  margin-bottom: 12px;
}

.topic-points {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.topic-points li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.topic-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  background-color: var(--accent);
  border-radius: 1px;
}

.topic-item-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
}

.topic-item-links li {
  font-size: 15px;
  font-weight: 700;
}

.ordering-notes {
  margin-bottom: 32px;
}

.ordering-notes h2 {
  font-size: 28px;
  padding-bottom: 10px;
  border-bottom: 1.5px solid var(--ink);
  margin-bottom: 14px;
}

.ordering-notes > p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  margin-bottom: 14px;
  max-width: 720px;
}

.ordering-list {
  counter-reset: ordering;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ordering-list li {
  position: relative;
  padding: 10px 14px 10px 46px;
  min-height: 44px;
  font-size: 15px;
  line-height: 1.7;
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  counter-increment: ordering;
}

.ordering-list li::before {
  content: counter(ordering, decimal-leading-zero);
  position: absolute;
  left: 12px;
  top: 11px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
}

.related-entry {
  padding-top: 24px;
  border-top: 1.5px solid var(--ink);
}

.related-entry h2 {
  font-size: 22px;
  margin-bottom: 14px;
}

.page-aside {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: sticky;
  top: 88px;
}

.aside-block {
  padding: 16px;
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
}

.aside-block h2 {
  font-size: 15px;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  color: var(--accent);
  padding-bottom: 8px;
  border-bottom: 1.5px solid var(--ink);
  margin-bottom: 12px;
}

.term-list dl {
  margin: 0;
}

.term-list dt {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  margin-top: 10px;
}

.term-list dt:first-child {
  margin-top: 0;
}

.term-list dd {
  margin: 2px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.aside-block.related ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.aside-block.related li {
  font-size: 15px;
  line-height: 1.6;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--line-soft);
}

.aside-block.related li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.aside-block.related a {
  font-weight: 700;
}

/* --------------------------------------------------------------------------
   pages · 来源说明
   -------------------------------------------------------------------------- */

.page-shell {
  max-width: 100%;
}

.page-head {
  padding-bottom: 24px;
  border-bottom: 1.5px solid var(--ink);
  margin-bottom: 28px;
}

.page-source-notes .page-shell {
  max-width: 900px;
}

.section-block {
  margin-bottom: 36px;
}

.section-block > h2 {
  font-size: 28px;
  padding-bottom: 10px;
  border-bottom: 1.5px solid var(--ink);
  margin-bottom: 16px;
}

.section-block > p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  max-width: 720px;
}

.section-block > p + p {
  margin-top: 10px;
}

.example-layout {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 24px;
  align-items: start;
  margin-bottom: 24px;
}

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

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

.example-text {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

.example-item {
  padding: 14px;
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

.step-list .step-name {
  display: block;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}

.step-list .step-desc {
  display: block;
  margin-top: 2px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.plain-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 780px;
}

.plain-list li {
  padding: 12px 14px;
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

.related-block {
  padding-top: 24px;
  border-top: 1.5px solid var(--ink);
}

.related-block > h2 {
  font-size: 22px;
  margin-bottom: 14px;
}

/* --------------------------------------------------------------------------
   pages · 入口核验
   -------------------------------------------------------------------------- */

.section {
  margin-bottom: 36px;
}

.section > h2 {
  font-size: 28px;
  padding-bottom: 10px;
  border-bottom: 1.5px solid var(--ink);
  margin-bottom: 16px;
}

.section > p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  max-width: 780px;
}

.section > p + p {
  margin-top: 10px;
}

.section-conclusion .lead-sentence {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.7;
  color: var(--ink);
  padding-left: 14px;
  border-left: 4px solid var(--accent);
  margin-bottom: 12px;
}

.section-steps .step-list {
  max-width: 860px;
}

.section-figure {
  margin-bottom: 36px;
}

.section-figure img {
  aspect-ratio: 16 / 7;
}

.section-table .table-wrap {
  margin-top: 16px;
}

.section-record .record-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 16px 0;
  max-width: 820px;
}

.section-record .record-list li {
  padding: 12px 14px;
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  font-size: 15px;
  line-height: 1.75;
}

.section-record .record-list strong {
  display: block;
  margin-bottom: 2px;
  color: var(--accent);
}

.section-faq .faq-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.section-faq .faq-item + .faq-item {
  margin-top: 0;
}

.section-related {
  padding-top: 24px;
  border-top: 1.5px solid var(--ink);
}

.section-related > h2 {
  font-size: 22px;
  border-bottom: 0;
  padding-bottom: 0;
  margin-bottom: 14px;
}

.section-related .related-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

/* --------------------------------------------------------------------------
   pages · 更新记录
   -------------------------------------------------------------------------- */

.page-container {
  max-width: 100%;
}

.page-update-log .page-container {
  max-width: 940px;
}

.log-stream {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-bottom: 36px;
}

.log-stage {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  padding-bottom: 24px;
  border-bottom: 1.5px solid var(--ink);
}

.log-stage:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.stage-num {
  display: inline-block;
  padding: 6px 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--accent);
  border: 1.5px solid var(--accent);
  border-radius: var(--radius);
  text-align: center;
}

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

.stage-title {
  font-size: 22px;
  line-height: 1.35;
  margin-bottom: 12px;
}

.log-item {
  padding: 14px;
  margin-bottom: 10px;
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
}

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

.log-change {
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  font-weight: 500;
}

.log-scope {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.log-advice {
  margin-top: 6px;
  font-size: 15px;
  font-weight: 700;
}

.type-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 820px;
}

.type-list li {
  padding: 10px 14px;
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  font-size: 15px;
  line-height: 1.7;
}

.advice-list {
  counter-reset: advice;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 820px;
}

.advice-list li {
  position: relative;
  padding: 10px 14px 10px 46px;
  min-height: 44px;
  font-size: 15px;
  line-height: 1.7;
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  counter-increment: advice;
}

.advice-list li::before {
  content: counter(advice, decimal-leading-zero);
  position: absolute;
  left: 12px;
  top: 11px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
}

.archive-figure {
  margin-bottom: 36px;
}

.archive-figure img {
  aspect-ratio: 16 / 8;
}

.related {
  padding-top: 24px;
  border-top: 1.5px solid var(--ink);
}

.related > h2 {
  font-size: 22px;
  margin-bottom: 14px;
}

.related .related-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

/* --------------------------------------------------------------------------
   pages · 编辑方法
   -------------------------------------------------------------------------- */

.method-summary {
  margin-bottom: 36px;
}

.method-summary h2 {
  font-size: 28px;
  padding-bottom: 10px;
  border-bottom: 1.5px solid var(--ink);
  margin-bottom: 16px;
}

.summary-panel {
  padding: 22px 20px;
  background-color: var(--ink-block);
  color: var(--white);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
}

.summary-lead {
  font-size: 17px;
  line-height: 1.75;
  color: var(--white);
  max-width: 820px;
}

.summary-scope {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.24);
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.86);
  max-width: 820px;
}

.summary-scope a {
  color: var(--white);
  font-weight: 700;
}

.summary-scope a:hover {
  background-color: var(--mark);
  color: var(--ink);
}

.entry-criteria {
  margin-bottom: 36px;
}

.entry-criteria > h2,
.writing-rules > h2,
.source-guide > h2,
.boundary-list > h2,
.correction-path > h2,
.checklist > h2,
.related-links > h2 {
  font-size: 28px;
  padding-bottom: 10px;
  border-bottom: 1.5px solid var(--ink);
  margin-bottom: 16px;
}

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

.criteria-item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 14px;
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
}

.criteria-num {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  padding-top: 2px;
}

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

.criteria-body h3 {
  font-size: 18px;
  margin-bottom: 4px;
}

.criteria-body p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.writing-rules {
  margin-bottom: 36px;
}

.writing-layout {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  gap: 24px;
  align-items: start;
}

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

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

.writing-item {
  padding: 12px 14px;
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

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

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

.source-guide {
  margin-bottom: 36px;
}

.guide-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.guide-item {
  padding: 14px;
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  min-width: 0;
}

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

.guide-item p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

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

.boundary-item {
  padding: 14px;
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  min-width: 0;
}

.boundary-item h3 {
  font-size: 18px;
  margin-bottom: 4px;
}

.boundary-item p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.correction-path {
  margin-bottom: 36px;
}

.correction-steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.correction-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 14px;
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
}

.correction-step .step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  border: 1.5px solid var(--accent);
  border-radius: 50%;
}

.correction-step .step-body {
  min-width: 0;
}

.correction-step h3 {
  font-size: 18px;
  margin-bottom: 4px;
}

.correction-step p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.checklist {
  margin-bottom: 36px;
}

.checklist-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.checklist-item {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding: 14px;
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  min-width: 0;
}

.check-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  background-color: var(--mark);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
}

.checklist-item p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.related-links {
  padding-top: 24px;
  border-top: 1.5px solid var(--ink);
}

.related-links > h2 {
  border-bottom: 0;
  padding-bottom: 0;
  font-size: 22px;
}

.related-links .related-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

/* --------------------------------------------------------------------------
   pages · 404
   -------------------------------------------------------------------------- */

.error-main {
  padding-top: 48px;
  padding-bottom: 48px;
}

.error-inner {
  max-width: 760px;
}

.meta-label {
  display: inline-block;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--accent);
  border: 1.5px solid var(--accent);
  border-radius: var(--radius);
  margin-bottom: 16px;
}

.error-inner h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 14px;
}

.error-lead {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.7;
  color: var(--ink);
  margin-bottom: 32px;
}

.error-block {
  margin-bottom: 28px;
}

.error-block h2 {
  font-size: 22px;
  padding-bottom: 8px;
  border-bottom: 1.5px solid var(--ink);
  margin-bottom: 14px;
}

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

.btn-home {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 44px;
  padding: 10px 14px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  background-color: var(--white);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  text-decoration: underline;
  text-decoration-thickness: 1px;
}

.btn-home::after {
  content: "→";
  font-family: var(--font-mono);
  color: var(--accent);
}

.btn-home:hover {
  background-color: var(--mark);
  color: var(--ink);
  text-decoration-thickness: 2px;
}

/* --------------------------------------------------------------------------
   responsive · 1200 / 900 / 640 / 420
   -------------------------------------------------------------------------- */

@media (max-width: 1200px) {
  :root {
    --gutter: 20px;
  }

  .hero-inner {
    gap: 32px;
  }

  .entry-list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 10px;
  }

  .page-layout {
    grid-template-columns: minmax(0, 8fr) minmax(220px, 4fr);
    gap: 24px;
  }
}

@media (max-width: 900px) {
  body {
    font-size: 16px;
  }

  .primary-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

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

  .hero {
    padding-top: 24px;
  }

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

  .hero-copy h1,
  .page-title,
  .error-inner h1 {
    font-size: 36px;
  }

  .hero-media {
    order: 2;
  }

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

  .entry-list li:last-child {
    grid-column: 1 / -1;
  }

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

  .conclusion-col + .conclusion-col {
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.24);
  }

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

  .topic-card:last-child {
    grid-column: 1 / -1;
  }

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

  .method-note {
    order: 1;
  }

  .method-points {
    order: 2;
  }

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

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

  .footer-brand-desc {
    max-width: none;
  }

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

  .page-aside {
    position: static;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

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

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

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

  .channel-figure img {
    aspect-ratio: 16 / 10;
  }

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

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

  .related-links .related-list li,
  .section-related .related-list li,
  .related .related-list li {
    min-height: 44px;
  }

  .example-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

  .example-figure {
    order: 1;
  }

  .example-text {
    order: 2;
  }

  .writing-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

  .writing-media {
    order: 1;
  }

  .writing-text {
    order: 2;
  }

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

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

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

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

  .stage-num {
    justify-self: start;
  }

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

@media (max-width: 640px) {
  :root {
    --gutter: 16px;
  }

  body {
    font-size: 16px;
  }

  .header-inner {
    padding: 10px var(--gutter);
  }

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

  .hero-copy h1,
  .page-title,
  .error-inner h1 {
    font-size: 30px;
  }

  .hero-lead,
  .page-summary,
  .page-lead,
  .page-description,
  .error-lead,
  .section-conclusion .lead-sentence {
    font-size: 17px;
  }

  .section-title,
  .question-list h2,
  .channel-notes h2,
  .check-steps h2,
  .topic-conclusion h2,
  .topic-groups > h2,
  .ordering-notes h2,
  .section-block > h2,
  .section > h2,
  .entry-criteria > h2,
  .writing-rules > h2,
  .source-guide > h2,
  .boundary-list > h2,
  .correction-path > h2,
  .checklist > h2,
  .method-summary h2 {
    font-size: 22px;
  }

  .topic-card h3,
  .channel-note h3,
  .topic-body h2,
  .question-item h3,
  .guide-item h3,
  .boundary-item h3,
  .criteria-body h3,
  .correction-step h3,
  .stage-title,
  .error-block h2,
  .related-links > h2,
  .related-block > h2,
  .related-entry h2,
  .related > h2,
  .section-related > h2,
  .aside-block h2 {
    font-size: 18px;
  }

  .hero-facts li {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 10px;
  }

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

  .entry-list li {
    padding: 10px 12px;
    min-height: 44px;
  }

  .entry-list a {
    display: inline-block;
    min-height: 24px;
  }

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

  .topic-card:last-child {
    grid-column: auto;
  }

  .topic-card .card-link a {
    display: inline-block;
    min-height: 32px;
  }

  /* 表格转逐行卡片 */
  .table-scroll,
  .table-wrap {
    overflow-x: visible;
    border: 0;
    background-color: transparent;
  }

  .channel-table,
  .data-table {
    min-width: 0;
    display: block;
  }

  .channel-table thead,
  .data-table thead {
    display: none;
  }

  .channel-table tbody,
  .data-table tbody {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .channel-table tbody tr,
  .data-table tbody tr {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    padding: 12px 14px;
    background-color: var(--white) !important;
    border: 1.5px solid var(--ink);
    border-radius: var(--radius);
  }

  .channel-table tbody tr:hover,
  .data-table tbody tr:hover {
    outline: 2px solid var(--accent);
    outline-offset: -2px;
  }

  .channel-table tbody th,
  .data-table tbody th {
    padding: 0 0 8px;
    border: 0;
    border-bottom: 1.5px solid var(--ink);
    margin-bottom: 8px;
    font-size: 17px;
    min-width: 0;
  }

  .channel-table tbody td,
  .data-table tbody td {
    padding: 6px 0;
    border: 0;
    font-size: 15px;
  }

  .channel-table tbody td::before,
  .data-table tbody td::before {
    display: block;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.02em;
    color: var(--muted);
    margin-bottom: 2px;
  }

  .channel-table tbody td:nth-child(2)::before {
    content: "覆盖题材";
  }

  .channel-table tbody td:nth-child(3)::before {
    content: "常见条目形态";
  }

  .channel-table tbody td:nth-child(4)::before {
    content: "入口";
  }

  .data-table tbody td:nth-child(2)::before {
    content: "判断依据";
  }

  .data-table tbody td:nth-child(3)::before {
    content: "建议动作";
  }

  .data-table tbody td:nth-child(1)::before {
    content: "写法";
  }

  .data-table tbody td:nth-child(2)::before {
    content: "读者应如何理解";
  }

  .section-source-notes .data-table tbody td:nth-child(2)::before,
  .page-source-notes .data-table tbody td:nth-child(2)::before {
    content: "读者应如何理解";
  }

  .channel-table tbody td a,
  .data-table tbody td a {
    display: inline-block;
    min-height: 32px;
    padding: 2px 0;
  }

  .step-item {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 12px;
    padding: 12px;
  }

  .step-item .step-num {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }

  .criteria-item {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 10px;
    padding: 12px;
  }

  .correction-step {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 12px;
    padding: 12px;
  }

  .correction-step .step-num {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }

  .check-steps .step-list li {
    padding: 10px 0 10px 40px;
  }

  .check-steps .step-list li::before {
    width: 28px;
    height: 28px;
    top: 10px;
  }

  .ordering-list li,
  .advice-list li {
    padding: 10px 12px 10px 42px;
  }

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

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

  .footer-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .footer-col:last-child {
    grid-column: 1 / -1;
  }

  .footer-col a {
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .faq-item summary {
    padding: 12px 14px;
    font-size: 15px;
  }

  .faq-item p {
    padding: 12px 14px;
  }

  .channel-figure img,
  .section-figure img,
  .archive-figure img {
    aspect-ratio: 4 / 3;
  }

  .update-nodes {
    margin-left: 4px;
    padding-left: 18px;
  }

  .update-node::before {
    left: -25px;
  }

  .conclusion-block,
  .summary-panel {
    padding: 18px 16px;
  }

  .meta-tag {
    font-size: 12px;
  }
}

@media (max-width: 420px) {
  :root {
    --gutter: 14px;
  }

  .header-inner {
    gap: 12px;
  }

  .brand-name {
    font-size: 18px;
  }

  .hero-copy h1,
  .page-title,
  .error-inner h1 {
    font-size: 26px;
  }

  .hero-facts li {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
  }

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

  .entry-list li:last-child {
    grid-column: auto;
  }

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

  .footer-col:last-child {
    grid-column: auto;
  }

  .btn-primary {
    display: block;
    width: 100%;
    text-align: center;
  }

  .topic-item-links {
    flex-direction: column;
    gap: 6px;
  }

  .topic-item-links li a {
    display: inline-block;
    min-height: 32px;
  }

  .related-list li,
  .related-item {
    padding: 10px 12px;
  }

  .conclusion-points li {
    padding-left: 16px;
  }

  .question-item h3 {
    font-size: 17px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}