/* ==========================================================================
   黑料吃瓜网 · 全站样式表
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base · 变量与重置
   -------------------------------------------------------------------------- */
:root {
  --paper: #F7F5F1;
  --surface: #FFFFFF;
  --ink: #1B1F23;
  --text: #333A40;
  --muted: #5E666D;
  --copper: #8A6A3B;
  --line: #D9D4C9;
  --state: #1F4A44;
  --shell: 1180px;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", SimSun, serif;
  --sans: system-ui, -apple-system, "Segoe UI", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.8;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--ink);
  line-height: 1.35;
}

p {
  margin: 0 0 1em;
}

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

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

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

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

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

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

figure {
  margin: 0;
}

figcaption {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

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

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

th, td {
  text-align: left;
}

/* --------------------------------------------------------------------------
   layout · 骨架：容器、页头、主导航、页脚
   -------------------------------------------------------------------------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 64px;
}

.brand {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
  white-space: nowrap;
}

.brand:hover,
.brand:focus-visible {
  color: var(--copper);
  text-decoration: none;
}

.site-nav {
  position: relative;
}

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

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 10px 14px;
  font-size: 15px;
  color: var(--text);
  border-bottom: 2px solid transparent;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--ink);
  text-decoration: none;
  border-bottom-color: var(--line);
}

.nav-link.is-current {
  color: var(--ink);
  font-weight: 600;
  border-bottom-color: var(--copper);
}

/* 二级面板 */
.nav-panel {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 30;
  display: none;
  gap: 32px;
  min-width: 320px;
  padding: 18px 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.nav-item.has-panel:hover .nav-panel,
.nav-item.has-panel:focus-within .nav-panel {
  display: flex;
}

.panel-col {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 150px;
}

.panel-col a {
  display: block;
  padding: 6px 0;
  font-size: 14px;
  color: var(--text);
}

.panel-col a:hover,
.panel-col a:focus-visible {
  color: var(--copper);
}

/* 汉堡按钮（桌面隐藏） */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
}

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

/* 移动导航容器 */
.mobile-nav {
  display: none;
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  padding: 8px 24px 16px;
}

.mobile-nav-list li a {
  display: block;
  padding: 12px 0;
  min-height: 44px;
  font-size: 15px;
  color: var(--text);
  border-bottom: 1px solid var(--line);
}

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

.mobile-nav-list li a.is-current {
  color: var(--ink);
  font-weight: 600;
}

/* 主内容区 */
.site-main {
  flex: 1 1 auto;
  display: block;
}

.inner-main {
  padding: 32px 0 64px;
}

/* 页脚 */
.site-footer {
  margin-top: auto;
  padding: 48px 0 24px;
  background: var(--surface);
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.6fr);
  gap: 48px;
}

.footer-brand {
  margin-bottom: 12px;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
}

.footer-desc {
  max-width: 46em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

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

.footer-col-title {
  margin-bottom: 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}

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

.footer-col ul li a {
  font-size: 14px;
  color: var(--muted);
}

.footer-col ul li a:hover,
.footer-col ul li a:focus-visible {
  color: var(--copper);
}

.footer-bottom {
  margin-top: 36px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.footer-bottom p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   layout · 内页通用：面包屑、页面标题、主内容 + 侧栏
   -------------------------------------------------------------------------- */
.breadcrumb {
  font-size: 14px;
  color: var(--muted);
}

.breadcrumb > .shell,
.breadcrumb-inner {
  padding-top: 20px;
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.breadcrumb-list li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

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

.breadcrumb-list li a:hover,
.breadcrumb-list li a:focus-visible {
  color: var(--copper);
}

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

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

.inner-main .breadcrumb {
  margin-bottom: 16px;
}

.page-header {
  margin-bottom: 28px;
}

.page-title {
  font-size: 34px;
  line-height: 1.35;
}

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  align-items: start;
  gap: 48px;
}

.page-main,
.article-body,
.content-article,
.policy-article {
  min-width: 0;
  max-width: 760px;
}

.page-head {
  margin-bottom: 24px;
}

.page-lead,
.page-purpose,
.article-lede {
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

.page-main > .page-head {
  margin-bottom: 28px;
}

/* 图片容器统一约束 */
.hero-media,
.path-media,
.page-media,
.article-media,
.content-figure {
  margin: 0 0 28px;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  background: var(--surface);
}

.hero-media img,
.path-media img,
.page-media img,
.article-media img,
.content-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-media figcaption,
.article-media figcaption,
.content-figure figcaption {
  padding: 0 16px 14px;
}

/* 侧栏 */
.page-aside,
.content-aside {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.aside-block {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.aside-title {
  margin-bottom: 12px;
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.aside-list,
.aside-toc,
.toc-list,
.related-list,
.aside-link-list,
.aside-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.aside-list li a,
.aside-toc li a,
.toc-list li a,
.related-list li a,
.aside-link-list li a,
.aside-links li a {
  display: block;
  padding: 4px 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
}

.aside-list li a:hover,
.aside-toc li a:hover,
.toc-list li a:hover,
.related-list li a:hover,
.aside-link-list li a:hover,
.aside-links li a:hover,
.aside-list li a:focus-visible,
.aside-toc li a:focus-visible,
.toc-list li a:focus-visible,
.related-list li a:focus-visible,
.aside-link-list li a:focus-visible,
.aside-links li a:focus-visible {
  color: var(--copper);
}

.aside-note {
  background: var(--paper);
}

.aside-note p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* 锚点标题不被固定页头遮挡 */
[id] {
  scroll-margin-top: 84px;
}

/* 相关内容条 */
.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}

.related-links-item {
  font-size: 14px;
  color: var(--copper);
}

/* --------------------------------------------------------------------------
   components · 通用区块、表格、列表、FAQ、按钮
   -------------------------------------------------------------------------- */
.section,
.content-section,
.article-section,
.policy-section {
  padding: 32px 0;
  border-top: 1px solid var(--line);
}

.section:first-of-type,
.content-section:first-of-type,
.article-section:first-of-type,
.policy-section:first-of-type {
  border-top: none;
  padding-top: 0;
}

.section h2,
.content-section h2,
.article-section h2,
.policy-section h2 {
  margin-bottom: 14px;
  font-size: 22px;
}

.section h3,
.content-section h3,
.article-section h3,
.policy-section h3 {
  font-size: 18px;
}

.section > p,
.content-section > p,
.article-section > p,
.policy-section > p {
  margin-bottom: 18px;
  max-width: 38em;
}

.section-head {
  margin-bottom: 28px;
}

.section-head h2 {
  font-size: 24px;
  margin-bottom: 10px;
}

.section-lead {
  max-width: 46em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.section-note,
.note-line,
.policy-note,
.section-link {
  margin-top: 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.section-note a,
.note-line a,
.policy-note a,
.section-link a {
  margin-right: 14px;
  color: var(--copper);
}

.section-more {
  display: inline-block;
  margin-top: 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--copper);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 22px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  border-radius: 6px;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.btn:hover,
.btn:focus-visible {
  text-decoration: none;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 22px;
  font-size: 15px;
  font-weight: 600;
  color: var(--surface);
  background: var(--state);
  border: 1px solid var(--state);
  border-radius: 6px;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: #173833;
  color: var(--surface);
  text-decoration: none;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 22px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: var(--copper);
  color: var(--copper);
  text-decoration: none;
}

/* 表格 */
.table-wrap {
  width: 100%;
  overflow-x: auto;
}

.data-table,
.term-table {
  width: 100%;
  margin: 8px 0 4px;
  font-size: 15px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.data-table caption,
.term-table caption {
  padding: 12px 16px;
  font-size: 14px;
  color: var(--muted);
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.data-table th,
.data-table td,
.term-table th,
.term-table td {
  padding: 12px 16px;
  vertical-align: top;
  line-height: 1.7;
  border-bottom: 1px solid var(--line);
}

.data-table thead th,
.term-table thead th {
  font-weight: 600;
  color: var(--ink);
  background: var(--paper);
}

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

.term-table td:first-child {
  width: 34%;
  font-weight: 600;
  color: var(--ink);
}

/* 编号路径 / 阶段 / 层级 / 年度条目 */
.step-list,
.path-list,
.stage-list,
.level-list,
.annual-list,
.rule-list,
.exclude-list,
.cooperate-list,
.handover-list,
.order-list,
.checklist,
.index-bar,
.misconception-list,
.stop-list,
.feedback-list,
.role-duty-list,
.check-list,
.records-points,
.link-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.step-item,
.path-item,
.stage-item,
.level-item,
.annual-item,
.rule-item,
.cooperate-item,
.handover-item,
.order-item,
.check-item,
.index-item,
.feedback-item {
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.step-name,
.path-name,
.stage-item h3,
.level-item h3,
.annual-item h3,
.rule-name,
.cooperate-item h3,
.handover-node,
.order-name,
.check-title,
.feedback-item h3,
.role-group h3 {
  display: block;
  margin-bottom: 8px;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
}

.step-desc,
.path-desc,
.stage-item p,
.level-item p,
.annual-item p,
.rule-body,
.cooperate-item p,
.handover-content,
.order-desc,
.check-note,
.feedback-item p,
.role-group p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

.stage-output,
.level-output {
  margin-top: 8px;
  font-size: 14px;
  color: var(--muted);
}

.path-num {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 600;
  color: var(--copper);
}

.path-link,
.col-link,
.role-link a,
.index-item a {
  display: inline-block;
  margin-top: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--copper);
}

/* 并列条目（无卡片底） */
.exclude-list li,
.stop-list li,
.check-list li,
.records-points li,
.role-duty-list li,
.misconception-list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.8;
}

.exclude-list li::before,
.stop-list li::before,
.check-list li::before,
.records-points li::before,
.role-duty-list li::before,
.misconception-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 6px;
  height: 6px;
  background: var(--copper);
  border-radius: 50%;
}

/* 定义列表口径 */
dl.rule-list {
  display: block;
}

dl.rule-list dt {
  margin-top: 14px;
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
}

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

dl.rule-list dd {
  margin: 6px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

/* 双栏容器 */
.split-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.column-box {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.column-box h3 {
  margin-bottom: 12px;
  font-size: 18px;
}

/* 误解对照 */
.misconception-quote {
  margin-bottom: 6px;
  font-size: 15px;
  color: var(--muted);
}

.misconception-fix {
  font-size: 15px;
  color: var(--ink);
}

/* 职能分组 */
.role-group {
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.role-group:first-of-type {
  border-top: none;
  padding-top: 0;
}

.role-duty-list {
  margin-top: 12px;
}

/* FAQ 折叠 */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.faq-q,
.faq-question {
  position: relative;
  padding: 14px 44px 14px 18px;
  min-height: 44px;
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

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

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

.faq-a,
.faq-answer {
  padding: 0 18px 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

.faq-a p,
.faq-answer p {
  margin-bottom: 10px;
}

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

/* --------------------------------------------------------------------------
   pages · 首页
   -------------------------------------------------------------------------- */
.home-main {
  display: block;
}

/* 首屏 */
.hero {
  padding: 48px 0 40px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  align-items: start;
  gap: 48px;
}

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

.hero-slogan {
  margin-bottom: 12px;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--copper);
}

.hero-copy h1 {
  margin-bottom: 16px;
  font-size: 34px;
  line-height: 1.35;
}

.hero-lead {
  max-width: 34em;
  margin-bottom: 24px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}

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

.hero-media {
  margin-bottom: 0;
}

.hero-steps {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.hero-steps-title {
  margin-bottom: 18px;
  font-size: 20px;
}

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

.hero-steps .step-item {
  padding: 0;
  background: transparent;
  border: none;
  border-top: 2px solid var(--copper);
  border-radius: 0;
  padding-top: 14px;
}

/* 服务范围对照带 */
.scope {
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}

.scope-list {
  display: flex;
  flex-direction: column;
}

.scope-row {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr) 140px;
  align-items: baseline;
  gap: 24px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.scope-row:last-child {
  border-bottom: 1px solid var(--line);
}

.scope-name {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
}

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

.scope-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--copper);
  text-align: right;
}

/* 四步任务路径 */
.path {
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}

.path-media {
  max-width: 760px;
}

.path-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.path-item {
  padding: 0;
  background: transparent;
  border: none;
  border-top: 1px solid var(--line);
  border-radius: 0;
  padding-top: 16px;
}

/* 记录与口径双栏 */
.records {
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}

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

.records-col {
  min-width: 0;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.records-col h2 {
  margin-bottom: 12px;
  font-size: 22px;
}

.records-col > p {
  margin-bottom: 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

/* 年度结构调整 */
.annual {
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}

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

.annual-item {
  padding: 0;
  background: transparent;
  border: none;
  border-top: 1px solid var(--line);
  border-radius: 0;
  padding-top: 16px;
}

/* 首页 FAQ */
.faq {
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}

/* 边界声明带 */
.boundary {
  padding: 32px 0;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.boundary-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}

.boundary-text {
  margin: 0;
  max-width: 60em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

.boundary-link {
  font-size: 15px;
  font-weight: 600;
  color: var(--copper);
  white-space: nowrap;
}

/* --------------------------------------------------------------------------
   pages · 内页栏目内部模块
   -------------------------------------------------------------------------- */

/* 服务概览 */
.page-service-annual .level-item {
  padding: 16px 0;
  background: transparent;
  border: none;
  border-top: 1px solid var(--line);
  border-radius: 0;
}

.page-service-annual .level-item:first-child {
  border-top: none;
  padding-top: 0;
}

.page-service-annual .link-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-service-annual .link-list li a {
  display: block;
  padding: 12px 16px;
  font-size: 15px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.page-service-annual .link-list li a:hover,
.page-service-annual .link-list li a:focus-visible {
  color: var(--copper);
  border-color: var(--copper);
  text-decoration: none;
}

/* 核查方法 */
.page-verification .stage-item {
  padding: 16px 0;
  background: transparent;
  border: none;
  border-top: 1px solid var(--line);
  border-radius: 0;
}

.page-verification .stage-item:first-child {
  border-top: none;
  padding-top: 0;
}

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

.page-verification .cooperate-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

/* 工作记录 */
.page-work-record .rule-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-work-record .rule-list .rule-item {
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.page-work-record .rule-list .rule-item h3 {
  margin-bottom: 8px;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
}

.page-work-record .rule-list .rule-item p {
  font-size: 15px;
  line-height: 1.8;
}

/* 口径说明 */
.page-data-notes .level-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.page-data-notes .level-item {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.page-data-notes .misconception-list li {
  padding: 14px 0 14px 18px;
  border-top: 1px solid var(--line);
}

.page-data-notes .misconception-list li:first-child {
  border-top: none;
}

/* 服务政策 */
.page-service-policy .rule-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  counter-reset: policy-rule;
}

.page-service-policy .rule-item {
  position: relative;
  padding: 16px 18px 16px 52px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  counter-increment: policy-rule;
}

.page-service-policy .rule-item::before {
  content: counter(policy-rule, decimal-leading-zero);
  position: absolute;
  left: 18px;
  top: 16px;
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 600;
  color: var(--copper);
}

.page-service-policy .rule-name {
  margin-bottom: 6px;
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
}

.page-service-policy .rule-body {
  font-size: 15px;
  line-height: 1.8;
}

.page-service-policy .stop-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* 职能与分工 */
.page-roles .role-group {
  padding: 24px 0;
}

.page-roles .role-link {
  margin: 12px 0 0;
  font-size: 14px;
}

.page-roles .handover-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

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

/* 问题索引 */
.page-faq-index .index-bar {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.page-faq-index .index-item a {
  margin-top: 0;
  font-family: var(--serif);
  font-size: 17px;
}

.page-faq-index .index-desc {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq-index .checklist {
  counter-reset: check-item;
}

.page-faq-index .check-item {
  position: relative;
  padding: 14px 18px 14px 52px;
  counter-increment: check-item;
}

.page-faq-index .check-item::before {
  content: counter(check-item, decimal-leading-zero);
  position: absolute;
  left: 18px;
  top: 14px;
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 600;
  color: var(--copper);
}

/* 404 */
.error-main {
  padding: 64px 0 72px;
}

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

.error-code {
  margin-bottom: 12px;
  font-family: var(--serif);
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--copper);
}

.error-block h1 {
  margin-bottom: 16px;
  font-size: 34px;
}

.error-lead {
  max-width: 40em;
  margin-bottom: 24px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
}

.error-guide {
  padding-top: 32px;
}

.error-guide h2 {
  margin-bottom: 16px;
  font-size: 22px;
}

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

.error-list li a {
  display: block;
  padding: 12px 16px;
  min-height: 44px;
  font-size: 15px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.error-list li a:hover,
.error-list li a:focus-visible {
  color: var(--copper);
  border-color: var(--copper);
  text-decoration: none;
}

/* 跳转链接（仅服务概览页存在） */
.skip-link {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 60;
  display: block;
  padding: 10px 18px;
  font-size: 14px;
  color: var(--surface);
  background: var(--state);
  border-radius: 0 0 6px 0;
  transform: translateY(-120%);
}

.skip-link:focus {
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .page-layout {
    grid-template-columns: minmax(0, 1fr) 240px;
    gap: 32px;
  }

  .hero-inner {
    gap: 32px;
  }

  .hero-copy h1 {
    font-size: 30px;
  }

  .scope-row {
    grid-template-columns: 180px minmax(0, 1fr) 120px;
    gap: 18px;
  }

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

  .page-verification .level-list,
  .page-data-notes .level-list,
  .page-roles .order-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  body {
    font-size: 16px;
  }

  .shell {
    padding: 0 18px;
  }

  /* 页头与移动导航 */
  .nav-toggle {
    display: flex;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
  }

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

  .site-nav {
    position: static;
  }

  .nav-item {
    width: 100%;
  }

  .nav-link {
    min-height: 44px;
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
    border-left: none;
  }

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

  .nav-panel {
    position: static;
    display: none;
    min-width: 0;
    padding: 8px 0 12px 18px;
    border: none;
    border-radius: 0;
  }

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

  .nav-item.has-panel.is-open .nav-panel {
    display: flex;
    flex-direction: column;
  }

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

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

  /* 页面标题与主内容 */
  .inner-main {
    padding: 24px 0 48px;
  }

  .page-title {
    font-size: 26px;
  }

  .page-header {
    margin-bottom: 20px;
  }

  .page-layout {
    display: flex;
    flex-direction: column;
    gap: 32px;
  }

  .page-main,
  .article-body,
  .content-article,
  .policy-article {
    max-width: 100%;
  }

  .page-aside,
  .content-aside {
    width: 100%;
  }

  .section,
  .content-section,
  .article-section,
  .policy-section {
    padding: 24px 0;
  }

  .section h2,
  .content-section h2,
  .article-section h2,
  .policy-section h2 {
    font-size: 20px;
  }

  /* 首页 */
  .hero {
    padding: 32px 0 28px;
  }

  .hero-inner {
    display: flex;
    flex-direction: column;
    gap: 28px;
  }

  .hero-copy h1 {
    font-size: 26px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn,
  .hero-actions .btn-primary,
  .hero-actions .btn-ghost {
    width: 100%;
  }

  .hero-steps {
    margin-top: 28px;
    padding-top: 20px;
  }

  .hero-steps .step-list {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .scope,
  .path,
  .records,
  .annual,
  .faq {
    padding: 32px 0;
  }

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

  .scope-link {
    text-align: left;
  }

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

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

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

  .boundary-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .boundary-link {
    white-space: normal;
  }

  /* 内页模块 */
  .split-columns,
  .page-service-annual .link-list,
  .page-verification .level-list,
  .page-verification .cooperate-list,
  .page-data-notes .level-list,
  .page-roles .order-list,
  .page-faq-index .index-bar,
  .error-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-service-policy .rule-item,
  .page-faq-index .check-item {
    padding-left: 46px;
  }

  .error-main {
    padding: 40px 0 56px;
  }

  .error-block h1 {
    font-size: 26px;
  }

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

  .error-actions .btn-primary,
  .error-actions .btn-ghost {
    width: 100%;
  }

  /* 页脚 */
  .site-footer {
    padding: 36px 0 20px;
  }

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

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

  .footer-col ul li a {
    display: inline-block;
    padding: 4px 0;
  }
}

@media (max-width: 480px) {
  .shell {
    padding: 0 14px;
  }

  .page-title {
    font-size: 24px;
  }

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

  .data-table,
  .term-table {
    font-size: 14px;
  }

  .data-table th,
  .data-table td,
  .term-table th,
  .term-table td {
    padding: 10px 12px;
  }

  .term-table td:first-child {
    width: 40%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .btn,
  .btn-primary,
  .btn-ghost {
    transition: none;
  }
}

/* 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;
  }
}