/* ==========================================================================
   吃瓜视频 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base
   -------------------------------------------------------------------------- */
:root {
  --paper: #f5f2ea;
  --ink: #16202a;
  --body: #4a5359;
  --line: #d8d2c6;
  --accent: #a8782f;
  --ok: #4f6f5c;
  --warn: #9b4a3f;
  --paper-soft: #fbf9f4;
  --paper-tint: #efeae0;
  --serif: "Songti SC", "Noto Serif CJK SC", SimSun, serif;
  --sans: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --mono: "SFMono-Regular", "Courier New", monospace;
  --wrap: 1200px;
  --gutter: 24px;
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--body);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.85;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--serif);
  color: var(--ink);
  font-weight: 700;
  line-height: 1.3;
}

p {
  margin: 0 0 14px;
}

ul,
ol {
  margin: 0 0 14px;
  padding-left: 20px;
}

li {
  margin-bottom: 8px;
}

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

a:hover,
a:focus-visible {
  text-decoration: underline;
}

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

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

figure {
  margin: 0;
}

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

caption {
  caption-side: top;
  text-align: left;
}

strong {
  color: var(--ink);
}

/* --------------------------------------------------------------------------
   layout · 全站骨架
   -------------------------------------------------------------------------- */
.site-header {
  background: var(--paper-soft);
  border-bottom: 1px solid var(--line);
  position: relative;
  z-index: 30;
}

.header-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 16px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

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

.brand:hover {
  text-decoration: none;
}

.brand-name {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.2;
}

.brand-sub {
  font-size: 12px;
  color: var(--body);
  letter-spacing: normal;
}

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

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

.primary-nav {
  flex: 1 1 auto;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 2px;
  justify-content: flex-end;
}

.nav-list li {
  margin: 0;
}

.nav-link {
  display: inline-block;
  padding: 8px 10px;
  color: var(--ink);
  font-size: 15px;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--accent);
  text-decoration: none;
}

.nav-link.is-current {
  color: var(--accent);
  font-weight: 700;
  border-bottom-color: var(--accent);
}

.site-main {
  display: block;
}

.inner-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter) 64px;
}

.breadcrumb {
  font-size: 13px;
  color: var(--body);
  padding: 20px 0 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

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

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

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

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

.breadcrumb-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.breadcrumb-list li {
  margin: 0;
}

.page-header {
  padding: 18px 0 8px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 28px;
}

.page-title {
  font-size: clamp(30px, 4vw, 46px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--ink);
  max-width: 20em;
}

.page-head {
  max-width: 760px;
  margin: 0 0 28px;
}

.page-lead,
.page-summary {
  font-size: 16px;
  color: var(--body);
  line-height: 1.85;
}

.page-title-block {
  max-width: 760px;
  margin: 0 0 32px;
}

.page-quickfacts {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-size: 14px;
  color: var(--body);
}

.page-quickfacts li {
  margin: 0;
  padding-left: 14px;
  position: relative;
}

.page-quickfacts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 6px;
  background: var(--accent);
}

.site-footer {
  background: var(--paper-tint);
  border-top: 1px solid var(--line);
  margin-top: 16px;
}

.footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 40px var(--gutter) 20px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px 36px;
}

.footer-title {
  font-family: var(--serif);
  font-size: 16px;
  color: var(--ink);
  margin: 0 0 12px;
}

.footer-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-list li {
  margin: 0 0 8px;
}

.footer-list a {
  color: var(--body);
  font-size: 14px;
}

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

.footer-about p {
  font-size: 14px;
  line-height: 1.8;
  margin: 0 0 10px;
}

.footer-copy {
  color: var(--body);
  font-size: 13px;
}

.footer-boundary {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 14px var(--gutter) 24px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--body);
}

/* --------------------------------------------------------------------------
   layout · 内页双栏体系
   -------------------------------------------------------------------------- */
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 48px;
  align-items: start;
}

.page-layout.sidebar-left {
  grid-template-columns: 280px minmax(0, 1fr);
}

.layout-shell {
  display: block;
}

.layout-main-aside {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 48px;
  align-items: start;
}

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

.content-main {
  max-width: 760px;
}

.side-column,
.content-aside {
  min-width: 0;
}

.content-aside {
  border-left: 1px solid var(--line);
  padding-left: 28px;
}

.page-container {
  max-width: 760px;
  margin: 0 auto;
}

/* --------------------------------------------------------------------------
   components · 通用区块
   -------------------------------------------------------------------------- */
.section {
  margin: 0 0 48px;
}

.section-block {
  margin: 0 0 44px;
}

.section-head {
  margin: 0 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.section-head h2 {
  font-size: 24px;
  margin: 0 0 6px;
}

.section-desc {
  margin: 0;
  font-size: 15px;
  color: var(--body);
}

.section-title {
  font-size: 24px;
  margin: 0 0 10px;
}

.section-intro {
  font-size: 15px;
  color: var(--body);
  margin: 0 0 16px;
}

.sub-title {
  font-size: 18px;
  margin: 0 0 10px;
}

.section-note {
  font-size: 13px;
  color: var(--body);
  margin: 14px 0 0;
}

.section-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  margin-top: 8px;
}

/* 通用两列 */
.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
}

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

/* 表格 */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  background: var(--paper-soft);
}

.data-table {
  font-size: 14px;
  line-height: 1.6;
  min-width: 100%;
}

.data-table caption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--body);
  border-bottom: 1px solid var(--line);
  background: var(--paper-tint);
}

.data-table thead th {
  text-align: left;
  font-weight: 700;
  color: var(--ink);
  background: var(--paper-tint);
  border-bottom: 2px solid var(--line);
  padding: 10px 14px;
  white-space: nowrap;
}

.data-table tbody th {
  text-align: left;
  font-weight: 700;
  color: var(--ink);
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.data-table tbody td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.data-table tbody tr:last-child th,
.data-table tbody tr:last-child td {
  border-bottom: none;
}

.data-table tbody tr:hover {
  background: var(--paper-tint);
}

.table-note {
  font-size: 13px;
  color: var(--body);
  margin: 10px 0 0;
}

/* 标签 */
.tag {
  display: inline-block;
  font-size: 12px;
  line-height: 1.6;
  padding: 1px 8px;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--body);
  background: var(--paper-soft);
}

.tag-channel {
  color: var(--accent);
  border-color: var(--accent);
}

.tag-check {
  color: var(--ok);
  border-color: var(--ok);
}

.tag-caution {
  color: var(--warn);
  border-color: var(--warn);
}

/* 编号 */
.entry-no,
.topic-no,
.teaser-no,
.step-index,
.step-no {
  font-family: var(--mono);
  color: var(--accent);
  font-size: 13px;
}

/* 步骤列表（内页通用） */
.step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: step;
}

.step-list .step-item {
  margin: 0 0 16px;
  padding: 14px 16px;
  border-left: 3px solid var(--line);
  background: var(--paper-soft);
}

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

.step-list .step-title {
  font-size: 17px;
  margin: 0 0 6px;
}

.step-list .step-desc {
  font-size: 15px;
  margin: 0;
}

/* 内容清单 */
.content-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.content-list li {
  padding: 6px 0 6px 16px;
  position: relative;
  font-size: 15px;
}

.content-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1em;
  width: 6px;
  height: 1px;
  background: var(--accent);
}

/* 检查清单 */
.check-list {
  list-style: none;
  margin: 0 0 10px;
  padding: 0;
}

.check-list li,
.check-list-item {
  padding: 4px 0 4px 18px;
  position: relative;
  font-size: 14px;
  color: var(--body);
}

.check-list li::before,
.check-list-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 8px;
  height: 8px;
  border: 1px solid var(--ok);
  border-radius: 2px;
}

/* 图片容器 */
figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--paper-tint);
}

figcaption {
  font-size: 13px;
  color: var(--body);
  padding: 8px 0 0;
  line-height: 1.7;
}

/* 折叠 */
.faq-item,
.accordion-item {
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper-soft);
  margin: 0 0 10px;
}

.faq-question,
.accordion-summary {
  cursor: pointer;
  padding: 14px 18px;
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  list-style: none;
  position: relative;
  padding-right: 44px;
}

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

.faq-question::after,
.accordion-summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--mono);
  color: var(--accent);
  font-size: 18px;
}

details[open] > .faq-question::after,
details[open] > .accordion-summary::after {
  content: "−";
}

.faq-answer,
.accordion-body {
  padding: 0 18px 16px;
  font-size: 15px;
}

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

/* 返回顶部 */
.back-to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper-soft);
  color: var(--ink);
  font-size: 16px;
  cursor: pointer;
  z-index: 40;
}

.back-to-top:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.back-to-top[hidden] {
  display: none;
}

/* 跳转链接 */
.skip-link {
  position: absolute;
  left: 8px;
  top: -60px;
  padding: 8px 14px;
  background: var(--ink);
  color: var(--paper);
  border-radius: 4px;
  z-index: 100;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 8px;
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   pages · 首页
   -------------------------------------------------------------------------- */
.home-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.hero {
  padding: 32px 0 40px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 44px;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 48px;
  align-items: start;
}

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

.hero-eyebrow {
  font-size: 13px;
  color: var(--accent);
  font-family: var(--mono);
  margin: 0 0 12px;
}

.hero-copy h1 {
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.25;
  margin: 0 0 16px;
  max-width: 16em;
}

.hero-lead {
  font-size: 16px;
  line-height: 1.85;
  margin: 0 0 22px;
  max-width: 34em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 22px;
}

.btn {
  display: inline-block;
  padding: 11px 22px;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  min-height: 44px;
  line-height: 22px;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.btn-primary:hover {
  background: var(--accent);
  border-color: var(--accent);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.hero-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
  font-size: 14px;
}

.hero-points li {
  margin: 0;
  padding-left: 18px;
  position: relative;
}

.hero-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 8px;
  height: 1px;
  background: var(--accent);
}

.hero-visual {
  min-width: 0;
  display: grid;
  gap: 18px;
}

.hero-figure {
  border: 1px solid var(--line);
  background: var(--paper-soft);
  padding: 8px;
  border-radius: 4px;
}

.hero-figure img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 2px;
}

.hero-figure figcaption {
  padding: 8px 4px 2px;
}

.reading-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.reading-step {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  margin: 0;
  font-size: 14px;
}

.reading-step .step-index {
  font-weight: 700;
}

.reading-step .step-text {
  min-width: 0;
}

/* 今日头条条带 */
.entry-strip {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.entry-row {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) 96px;
  gap: 16px;
  align-items: start;
  padding: 18px 8px;
  border-bottom: 1px solid var(--line);
  margin: 0;
  transition: background-color 0.15s ease;
}

.entry-row:hover {
  background: var(--paper-soft);
}

.entry-row .entry-no {
  font-size: 15px;
  font-weight: 700;
  padding-top: 2px;
}

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

.entry-title {
  font-size: 18px;
  margin: 0 0 4px;
}

.entry-title + .tag {
  margin-bottom: 6px;
}

.entry-summary {
  font-size: 14px;
  margin: 6px 0 0;
  color: var(--body);
}

.entry-link {
  justify-self: end;
  font-size: 14px;
  font-weight: 600;
  align-self: center;
}

/* 频道台账 */
.channel-ledger .section-note a {
  font-weight: 600;
}

/* 专题精选 */
.topic-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.topic-item {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 22px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper-soft);
  margin: 0;
}

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

.topic-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 2px;
}

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

.topic-title {
  font-size: 19px;
  margin: 4px 0 8px;
}

.topic-summary {
  font-size: 15px;
  margin: 0 0 10px;
}

.topic-link {
  font-size: 14px;
  font-weight: 600;
}

/* 深度观察预览 */
.in-depth-preview .two-col {
  border-top: 1px solid var(--line);
  padding-top: 20px;
}

.col-titles {
  display: grid;
  gap: 16px;
  align-content: start;
}

.article-teaser {
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}

.article-teaser:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.teaser-title {
  font-size: 18px;
  margin: 4px 0 0;
}

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

.teaser-summary {
  font-size: 15px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}

.teaser-summary:last-of-type {
  border-bottom: none;
}

/* 观看说明步骤 */
.step-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.step-card {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  border-radius: 4px;
  background: var(--paper-soft);
}

.step-card .step-index {
  display: block;
  margin-bottom: 6px;
}

.step-card .step-title {
  font-size: 17px;
  margin: 0 0 10px;
}

.step-card .check-list {
  margin-bottom: 10px;
}

.step-card .step-boundary {
  font-size: 13px;
  color: var(--warn);
  margin: 0;
  padding-top: 8px;
  border-top: 1px dashed var(--line);
}

.check-figure {
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 8px;
  background: var(--paper-soft);
  margin-bottom: 8px;
}

.check-figure img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  border-radius: 2px;
}

/* 时间归档入口 */
.archive-bar {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.archive-stage {
  min-width: 0;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--ok);
  border-radius: 4px;
  background: var(--paper-soft);
}

.stage-name {
  font-size: 17px;
  margin: 0 0 6px;
}

.stage-desc {
  font-size: 14px;
  margin: 0 0 10px;
}

.stage-link {
  font-size: 14px;
  font-weight: 600;
}

/* 意见反馈路径 */
.feedback-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.feedback-row {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr) 96px;
  gap: 16px;
  align-items: center;
  padding: 14px 8px;
  border-bottom: 1px solid var(--line);
  margin: 0;
}

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

.feedback-case {
  font-size: 14px;
  margin: 0;
}

.feedback-link {
  justify-self: end;
  font-size: 14px;
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   pages · 今日头条
   -------------------------------------------------------------------------- */
.page-headlines .page-head {
  margin-bottom: 24px;
}

.ledger-figure {
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 8px;
  background: var(--paper-soft);
  margin: 0 0 20px;
}

.ledger-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 2px;
}

.figure-caption {
  padding: 8px 4px 2px;
}

.ledger-table {
  min-width: 640px;
}

.ledger-table caption {
  font-weight: 700;
  color: var(--ink);
}

.distribution-table {
  min-width: 600px;
}

.aside-block {
  margin: 0 0 32px;
}

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

.aside-title {
  font-size: 18px;
  margin: 0 0 8px;
}

.aside-intro {
  font-size: 14px;
  margin: 0 0 12px;
}

.aside-table {
  border-top: 1px solid var(--line);
}

.aside-row {
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.aside-row-title {
  font-size: 15px;
  margin: 0 0 4px;
}

.aside-row-desc {
  font-size: 13px;
  margin: 0 0 4px;
}

.aside-row-note {
  font-size: 13px;
  color: var(--warn);
  margin: 0;
}

.aside-text {
  font-size: 14px;
  margin: 0 0 10px;
}

.aside-foot {
  font-size: 14px;
  font-weight: 600;
  margin: 12px 0 0;
}

/* --------------------------------------------------------------------------
   pages · 频道目录
   -------------------------------------------------------------------------- */
.channel-figure {
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 8px;
  background: var(--paper-soft);
  margin: 0 0 20px;
}

.channel-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 2px;
}

.channel-ledger .ledger-table {
  min-width: 660px;
}

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

.path-step {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper-soft);
}

.path-step .step-index {
  display: block;
  margin-bottom: 6px;
}

.path-step h3 {
  font-size: 17px;
  margin: 0 0 8px;
}

.step-question {
  font-size: 14px;
  color: var(--warn);
  margin: 0 0 8px;
}

.path-step p:last-child {
  font-size: 14px;
  margin: 0;
}

.path-footer {
  font-size: 14px;
  margin: 18px 0 0;
}

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

.boundary-col {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper-soft);
}

.boundary-col h3 {
  font-size: 17px;
  margin: 0 0 10px;
}

.boundary-check {
  border-top: 3px solid var(--ok);
}

.boundary-caution {
  border-top: 3px solid var(--warn);
}

.boundary-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.boundary-list li {
  font-size: 14px;
  padding: 6px 0 6px 18px;
  position: relative;
  margin: 0;
  border-bottom: 1px dashed var(--line);
}

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

.boundary-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.9em;
  width: 8px;
  height: 1px;
  background: var(--body);
}

.boundary-note {
  font-size: 13px;
  margin: 16px 0 0;
}

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

.related-links-label {
  font-family: var(--serif);
  font-weight: 700;
  color: var(--ink);
}

.related-links-item {
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   pages · 专题档案
   -------------------------------------------------------------------------- */
.page-topics .section-index .data-table {
  min-width: 560px;
}

.page-topics .table-caption {
  font-weight: 700;
  color: var(--ink);
}

.topic-entry {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 20px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper-soft);
  margin: 0 0 18px;
}

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

.topic-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 2px;
}

.figure-note {
  padding: 6px 0 0;
}

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

.topic-name {
  font-size: 19px;
  margin: 4px 0 8px;
}

.topic-scope {
  font-size: 15px;
  margin: 0 0 6px;
}

.topic-order {
  font-size: 14px;
  color: var(--ok);
  margin: 0 0 10px;
}

.topic-link {
  font-size: 14px;
  font-weight: 600;
}

.content-aside .aside-table {
  width: 100%;
  font-size: 13px;
  line-height: 1.6;
  border: 1px solid var(--line);
}

.content-aside .aside-table th {
  text-align: left;
  color: var(--ink);
  background: var(--paper-tint);
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  font-weight: 700;
}

.content-aside .aside-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.content-aside .aside-table tr:last-child td {
  border-bottom: none;
}

.content-aside .aside-table .table-caption {
  padding: 8px 10px;
  font-size: 12px;
  border-bottom: 1px solid var(--line);
  background: var(--paper-soft);
}

.aside-note {
  font-size: 13px;
  color: var(--body);
  margin: 12px 0 0;
}

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

.order-col {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper-soft);
}

.col-title {
  font-size: 17px;
  margin: 0 0 12px;
}

.order-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: order;
}

.order-item {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 8px;
  font-size: 14px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--line);
  margin: 0;
}

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

.order-item .step-no {
  font-weight: 700;
}

.section-faq {
  max-width: 760px;
}

/* --------------------------------------------------------------------------
   pages · 深度观察
   -------------------------------------------------------------------------- */
.article-body {
  min-width: 0;
}

.summary-block {
  padding: 20px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: 4px;
  background: var(--paper-soft);
  margin: 0 0 32px;
}

.summary-conclusion {
  font-size: 16px;
  color: var(--ink);
  margin: 0 0 16px;
}

.article-media {
  margin: 0 0 16px;
}

.article-media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 2px;
}

.summary-checklist {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
}

.checklist-item {
  padding: 8px 0 8px 20px;
  position: relative;
  font-size: 15px;
  margin: 0;
  border-bottom: 1px dashed var(--line);
}

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

.checklist-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1em;
  width: 8px;
  height: 8px;
  border: 1px solid var(--ok);
  border-radius: 2px;
}

.checklist-label {
  color: var(--ink);
  font-weight: 700;
}

.summary-note {
  font-size: 13px;
  color: var(--warn);
  margin: 0;
}

.two-col-block {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
  margin: 0 0 32px;
}

.col-panel {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper-soft);
}

.col-panel p {
  font-size: 15px;
}

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

.article-section {
  margin: 0 0 32px;
}

.article-section > p {
  font-size: 16px;
}

.misconception-list {
  margin: 0 0 16px;
  padding-left: 22px;
}

.misconception-item {
  font-size: 15px;
  margin: 0 0 10px;
}

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

.help-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.help-item {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr) 120px;
  gap: 14px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  margin: 0;
  font-size: 14px;
}

.help-topic {
  font-family: var(--serif);
  font-weight: 700;
  color: var(--ink);
}

.help-scene {
  min-width: 0;
  color: var(--body);
}

.help-link {
  justify-self: end;
  font-weight: 600;
}

.glossary-list {
  margin: 0 0 12px;
}

.glossary-item {
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.glossary-item dt {
  font-family: var(--serif);
  font-weight: 700;
  color: var(--ink);
  font-size: 15px;
  margin-bottom: 4px;
}

.glossary-item dd {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   pages · 时间归档
   -------------------------------------------------------------------------- */
.page-archive .breadcrumb-list {
  padding: 20px 0 0;
}

.archive-aside {
  min-width: 0;
}

.year-stepper {
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper-soft);
  padding: 16px;
  margin: 0 0 24px;
}

.stepper-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 10px;
}

.stepper-btn {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
  cursor: pointer;
}

.stepper-btn:hover:not([aria-disabled="true"]):not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
}

.stepper-btn:disabled,
.stepper-btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
}

.stepper-current {
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
  text-align: center;
  font-family: var(--mono);
  font-size: 14px;
  color: var(--ink);
}

.stepper-note {
  font-size: 12px;
  color: var(--body);
  margin: 0;
}

.year-index {
  margin: 0 0 24px;
}

.year-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.year-index-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 4px 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  margin: 0;
  font-size: 14px;
}

.year-index-item a {
  font-weight: 600;
}

.year-index-range {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--body);
}

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

.phase-index {
  margin: 0 0 32px;
}

.phase-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.phase-item {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr) 100px;
  gap: 16px;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  margin: 0;
}

.phase-name {
  font-family: var(--mono);
  font-size: 15px;
  color: var(--accent);
  font-weight: 700;
}

.phase-desc {
  font-size: 14px;
  margin: 0;
}

.phase-link {
  justify-self: end;
  font-size: 14px;
  font-weight: 600;
}

.archive-table-section {
  margin: 0 0 32px;
}

.archive-table {
  min-width: 640px;
}

.archive-table caption {
  font-weight: 700;
  color: var(--ink);
}

.archive-tips {
  margin: 0 0 28px;
}

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

.tip-col {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper-soft);
}

.tip-col h3 {
  font-size: 17px;
  margin: 0 0 10px;
}

.tip-col p {
  font-size: 15px;
}

.tip-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.tip-list li {
  font-size: 14px;
  padding: 5px 0 5px 16px;
  position: relative;
  margin: 0;
}

.tip-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.9em;
  width: 6px;
  height: 1px;
  background: var(--accent);
}

.archive-figure {
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 8px;
  background: var(--paper-soft);
}

.archive-figure img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  border-radius: 2px;
}

/* --------------------------------------------------------------------------
   pages · 观看说明
   -------------------------------------------------------------------------- */
.page-viewing-guide .page-title {
  margin-bottom: 4px;
}

.page-viewing-guide .page-title .page-lead {
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 400;
  color: var(--body);
  line-height: 1.85;
  margin: 12px 0 0;
  max-width: 40em;
}

.guide-summary {
  margin: 0 0 40px;
}

.guide-summary h2,
.guide-clauses h2,
.guide-verify h2,
.guide-faq h2,
.guide-related h2 {
  font-size: 24px;
  margin: 0 0 14px;
}

.guide-summary-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 28px;
  align-items: start;
}

.guide-summary-text {
  min-width: 0;
}

.guide-summary-text p {
  font-size: 16px;
}

.guide-summary-figure {
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 8px;
  background: var(--paper-soft);
  min-width: 0;
}

.guide-summary-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 2px;
}

.guide-clauses {
  margin: 0 0 40px;
}

.guide-verify {
  margin: 0 0 40px;
}

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

.verify-col {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper-soft);
}

.verify-col h3 {
  font-size: 17px;
  margin: 0 0 10px;
}

.verify-col-ok {
  border-top: 3px solid var(--ok);
}

.verify-col-warn {
  border-top: 3px solid var(--warn);
}

.verify-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.verify-list li {
  font-size: 14px;
  padding: 7px 0 7px 20px;
  position: relative;
  margin: 0;
  border-bottom: 1px dashed var(--line);
}

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

.verify-list li::before {
  position: absolute;
  left: 0;
  top: 0.6em;
  font-family: var(--mono);
  font-size: 13px;
}

.verify-col-ok .verify-list li::before {
  content: "✓";
  color: var(--ok);
}

.verify-col-warn .verify-list li::before {
  content: "!";
  color: var(--warn);
}

.check-mark {
  color: var(--ok);
}

.warn-mark {
  color: var(--warn);
}

.guide-faq {
  margin: 0 0 40px;
}

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

.related-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

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

.related-title {
  font-size: 17px;
  margin: 0 0 6px;
}

.related-desc {
  font-size: 14px;
  margin: 0 0 8px;
}

.related-link {
  font-size: 14px;
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   pages · 意见反馈
   -------------------------------------------------------------------------- */
.page-feedback .page-shell {
  max-width: 760px;
  margin: 0 auto;
}

.page-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  color: var(--body);
  margin: 0 0 32px;
  padding: 8px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.meta-label {
  font-family: var(--mono);
  color: var(--accent);
}

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

.feedback-types {
  margin: 0 0 32px;
}

.feedback-types h2,
.feedback-prepare h2,
.feedback-process h2,
.feedback-alternatives h2 {
  font-size: 24px;
  margin: 0 0 10px;
}

.feedback-table {
  min-width: 560px;
}

.feedback-table .table-caption {
  font-weight: 700;
  color: var(--ink);
}

.feedback-figure {
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 8px;
  background: var(--paper-soft);
  margin: 0 0 32px;
}

.feedback-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 2px;
}

.feedback-prepare {
  margin: 0 0 32px;
}

.prepare-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: prep;
}

.prepare-item {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  margin: 0;
  counter-increment: prep;
}

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

.prepare-item h3 {
  font-size: 16px;
  margin: 0 0 6px;
}

.prepare-item h3::before {
  content: counter(prep, decimal-leading-zero) " · ";
  font-family: var(--mono);
  color: var(--accent);
  font-size: 13px;
}

.prepare-item p {
  font-size: 15px;
  margin: 0;
}

.feedback-process {
  margin: 0 0 32px;
}

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

.process-col {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper-soft);
}

.process-col h3 {
  font-size: 17px;
  margin: 0 0 12px;
}

.process-steps .step-list .step-item {
  background: var(--paper);
}

.process-boundary {
  border-top: 3px solid var(--warn);
}

.feedback-alternatives {
  margin: 0 0 16px;
}

.alt-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.alt-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 110px;
  gap: 16px;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  margin: 0;
}

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

.alt-body h3 {
  font-size: 16px;
  margin: 0 0 4px;
}

.alt-body p {
  font-size: 14px;
  margin: 0;
}

.alt-link {
  justify-self: end;
  font-size: 14px;
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   pages · 404
   -------------------------------------------------------------------------- */
.error-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 64px var(--gutter) 80px;
}

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

.error-code {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--accent);
  margin: 0 0 10px;
}

.error-title {
  font-size: clamp(30px, 4vw, 46px);
  margin: 0 0 14px;
}

.error-lead {
  font-size: 16px;
  margin: 0 0 28px;
}

.error-section {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper-soft);
  margin: 0 0 24px;
}

.error-subtitle {
  font-size: 18px;
  margin: 0 0 12px;
}

.error-link-list {
  list-style: none;
  margin: 0 0 12px;
  padding: 0;
}

.error-link-list li {
  padding: 6px 0 6px 16px;
  position: relative;
  margin: 0;
  font-size: 15px;
}

.error-link-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1em;
  width: 6px;
  height: 1px;
  background: var(--accent);
}

.error-note {
  font-size: 13px;
  margin: 0;
}

.error-home-link {
  display: inline-block;
  padding: 11px 22px;
  min-height: 44px;
  border: 1px solid var(--ink);
  border-radius: 4px;
  background: var(--ink);
  color: var(--paper);
  font-size: 15px;
  font-weight: 600;
  line-height: 22px;
}

.error-home-link:hover {
  background: var(--accent);
  border-color: var(--accent);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .header-inner {
    padding: 14px var(--gutter);
  }

  .nav-toggle {
    display: flex;
  }

  .primary-nav {
    flex: 1 1 100%;
    order: 3;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    gap: 0;
    border-top: 1px solid var(--line);
    padding-top: 8px;
  }

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

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

  .nav-link {
    display: block;
    width: 100%;
    padding: 12px 4px;
    border-bottom: 1px solid var(--line);
    white-space: normal;
  }

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

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

  .page-layout,
  .page-layout.sidebar-left,
  .layout-main-aside {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

  .content-aside {
    border-left: none;
    border-top: 1px solid var(--line);
    padding-left: 0;
    padding-top: 24px;
  }

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

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

  .guide-summary-figure {
    max-width: 480px;
  }
}

@media (max-width: 720px) {
  body {
    font-size: 16px;
  }

  .header-inner {
    padding: 12px 16px;
  }

  .brand-name {
    font-size: 21px;
  }

  .inner-main {
    padding: 0 16px 48px;
  }

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

  .page-title {
    font-size: 28px;
  }

  .hero {
    padding: 24px 0 32px;
  }

  .hero-copy h1 {
    font-size: 28px;
  }

  .hero-actions .btn {
    flex: 1 1 auto;
    text-align: center;
  }

  .entry-row {
    grid-template-columns: 32px minmax(0, 1fr);
    gap: 10px 12px;
    padding: 16px 0;
  }

  .entry-row .entry-link {
    grid-column: 2;
    justify-self: start;
  }

  .topic-item,
  .topic-entry {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

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

  .step-grid,
  .archive-bar,
  .path-grid,
  .boundary-grid,
  .two-col,
  .two-col-block,
  .order-columns,
  .tips-grid,
  .verify-grid,
  .process-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .feedback-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
    align-items: start;
  }

  .feedback-link {
    justify-self: start;
  }

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

  .help-link {
    justify-self: start;
  }

  .phase-item {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 8px 12px;
  }

  .phase-link {
    grid-column: 2;
    justify-self: start;
  }

  .alt-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .alt-link {
    justify-self: start;
  }

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

  .footer-boundary {
    padding: 12px 16px 20px;
  }

  /* 表格在窄屏改为卡片式纵向条目，避免横向溢出 */
  .table-wrap {
    overflow-x: visible;
    border: none;
    background: transparent;
  }

  .data-table {
    min-width: 0;
    display: block;
    border: none;
    background: transparent;
  }

  .data-table caption {
    display: block;
    padding: 0 0 10px;
    border: none;
    background: transparent;
    font-size: 13px;
    color: var(--body);
  }

  .data-table thead {
    display: block;
    border: 1px solid var(--line);
    border-bottom: none;
    background: var(--paper-tint);
  }

  .data-table thead tr {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0;
  }

  .data-table thead th {
    display: block;
    padding: 8px 12px;
    font-size: 12px;
    border-bottom: 1px solid var(--line);
    white-space: normal;
    background: transparent;
    border-right: 1px solid var(--line);
  }

  .data-table thead th:nth-child(2n) {
    border-right: none;
  }

  .data-table tbody {
    display: block;
  }

  .data-table tbody tr {
    display: block;
    border: 1px solid var(--line);
    border-top: none;
    background: var(--paper-soft);
    padding: 4px 0;
  }

  .data-table tbody tr:first-child {
    border-top: 1px solid var(--line);
  }

  .data-table tbody th,
  .data-table tbody td {
    display: block;
    border-bottom: 1px dashed var(--line);
    padding: 8px 12px;
    font-size: 14px;
  }

  .data-table tbody tr th:last-child,
  .data-table tbody tr td:last-child {
    border-bottom: none;
  }

  .data-table tbody th {
    background: var(--paper-tint);
  }

  .data-table tbody tr:hover {
    background: var(--paper-soft);
  }

  /* 侧栏内的小表同样按块级处理 */
  .content-aside .aside-table {
    display: block;
    border: 1px solid var(--line);
  }

  .content-aside .aside-table thead {
    display: block;
    background: var(--paper-tint);
    border: none;
    border-bottom: 1px solid var(--line);
  }

  .content-aside .aside-table thead tr {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .content-aside .aside-table thead th {
    display: block;
    padding: 8px 8px;
    font-size: 12px;
    border-right: 1px solid var(--line);
    border-bottom: none;
  }

  .content-aside .aside-table thead th:last-child {
    border-right: none;
  }

  .content-aside .aside-table tbody {
    display: block;
  }

  .content-aside .aside-table tbody tr {
    display: block;
    border-bottom: 1px solid var(--line);
  }

  .content-aside .aside-table tbody tr:last-child {
    border-bottom: none;
  }

  .content-aside .aside-table tbody td {
    display: block;
    padding: 8px 10px;
    border-bottom: 1px dashed var(--line);
    font-size: 13px;
  }

  .content-aside .aside-table tbody td:last-child {
    border-bottom: none;
  }

  .ledger-table,
  .distribution-table,
  .archive-table,
  .feedback-table,
  .page-topics .section-index .data-table,
  .channel-ledger .ledger-table,
  .feedback-table {
    min-width: 0;
  }

  .guide-summary-figure {
    max-width: 100%;
  }

  .back-to-top {
    right: 12px;
    bottom: 12px;
  }

  .error-main {
    padding: 40px 16px 56px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}

@media print {
  .site-nav,
  .nav-toggle,
  .back-to-top,
  .skip-link,
  .hero-actions {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .site-header,
  .site-footer {
    background: #fff;
    border-color: #999;
  }

  a {
    color: #000;
  }
}

/* 程序验收反馈：移动端防溢出 */
@media (max-width: 768px) {
  .site-main,
  .site-main * {
    min-width: 0;
    max-width: 100%;
  }

  .site-main :is(h1, h2, h3, h4, p, a, span) {
    overflow-wrap: anywhere;
  }
}