/* ============================================================
   BASE — 全局重置、变量与基础排版
   ============================================================ */
:root {
  --color-bg: #F7F5F0;
  --color-primary: #0E7C66;
  --color-primary-dark: #0A5F4E;
  --color-accent: #F2B134;
  --color-coral: #E4572E;
  --color-ink: #1E293B;
  --color-white: #FFFFFF;
  --color-border: #E5E0D6;
  --color-muted: #64748B;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --container-width: 1200px;
  --content-width: 1080px;
  --header-height: 72px;
  --transition: 0.2s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  line-height: 1.7;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-ink);
  background-color: var(--color-bg);
  min-height: 100vh;
}

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

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

a:hover {
  color: var(--color-primary-dark);
}

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}

/* ============================================================
   LAYOUT — 全站统一容器与骨架
   ============================================================ */
.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.brand-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-ink);
  line-height: 1.2;
}

.brand-tagline {
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.4;
}

.site-nav .nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 10px 14px;
  font-size: 15px;
  font-weight: 400;
  color: var(--color-ink);
  border-radius: var(--radius-sm);
  line-height: 1.4;
  white-space: nowrap;
}

.nav-link:hover {
  background-color: rgba(14, 124, 102, 0.08);
  color: var(--color-primary);
}

.nav-link.is-current {
  color: var(--color-primary);
  font-weight: 700;
  background-color: rgba(14, 124, 102, 0.08);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border-radius: var(--radius-sm);
}

.menu-bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-ink);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.site-main {
  flex: 1 0 auto;
  width: 100%;
}

/* 页脚 */
.site-footer {
  background-color: var(--color-ink);
  color: rgba(255, 255, 255, 0.85);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 56px 24px 32px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 8px;
}

.footer-tagline {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
}

.footer-heading {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 16px;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  line-height: 1.5;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 24px;
  text-align: center;
}

.copyright {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  max-width: var(--container-width);
  margin: 0 auto;
}

/* ============================================================
   COMPONENTS — 通用组件
   ============================================================ */
/* 按钮 */
.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.4;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn-secondary:hover {
  background-color: rgba(14, 124, 102, 0.08);
  color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

/* 状态标签 */
.status-tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.4;
}

.status-stable {
  background-color: rgba(14, 124, 102, 0.12);
  color: var(--color-primary);
}

.status-maintain {
  background-color: rgba(242, 177, 52, 0.15);
  color: #9A6A00;
}

/* 区块标题 */
.section-header {
  margin-bottom: 32px;
}

.section-title {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.section-desc {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.6;
}

/* 箭头标记 */
.arrow-mark {
  display: inline-block;
  font-style: normal;
  transition: transform var(--transition);
}

a:hover .arrow-mark {
  transform: translateX(4px);
}

/* 面包屑 */
.breadcrumb {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 20px 24px 0;
  font-size: 14px;
  color: var(--color-muted);
}

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

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

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

.breadcrumb-current {
  color: var(--color-ink);
  font-weight: 500;
}

.breadcrumb-sep {
  margin: 0 4px;
  color: var(--color-muted);
}

/* 页面标题区 */
.page-header {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 16px 24px 8px;
  width: 100%;
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-ink);
}

.page-lead {
  font-size: 16px;
  color: var(--color-muted);
  line-height: 1.7;
  max-width: var(--content-width);
}

/* 相关入口列表 */
.related-links {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 48px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.related-links-label {
  font-size: 14px;
  color: var(--color-muted);
  margin-right: 4px;
}

.related-links-item {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 14px;
  color: var(--color-ink);
  transition: border-color var(--transition), color var(--transition);
}

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

/* 手风琴 FAQ */
.faq-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 24px;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-ink);
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  font-size: 22px;
  font-weight: 400;
  color: var(--color-primary);
  flex-shrink: 0;
  transition: transform var(--transition);
}

.faq-item[open] .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 24px 18px;
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.7;
}

.faq-answer p {
  margin-bottom: 8px;
}

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

/* ============================================================
   PAGES — 首页
   ============================================================ */
/* 首屏 */
.hero-section {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: 56px 0 64px;
}

.hero-layout {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  align-items: center;
  gap: 48px;
}

.hero-status-tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  background-color: rgba(14, 124, 102, 0.1);
  color: var(--color-primary);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 20px;
}

.hero-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-ink);
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 28px;
  max-width: 520px;
}

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

.hero-figure {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.hero-image {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* 服务能力总览 */
.service-overview-section {
  padding: 64px 0;
}

.service-overview-section .section-header {
  max-width: var(--container-width);
  margin: 0 auto 40px;
  padding: 0 24px;
}

.service-list {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.service-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(30, 41, 59, 0.08);
}

.service-index {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.05em;
}

.service-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.service-detail {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.6;
  flex: 1;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  margin-top: auto;
}

/* 最新动态 */
.latest-updates-section {
  background-color: var(--color-white);
  padding: 64px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.latest-updates-section .section-header {
  max-width: var(--container-width);
  margin: 0 auto 40px;
  padding: 0 24px;
}

.update-list {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.update-item {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.update-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink);
  line-height: 1.4;
}

.update-time {
  font-size: 13px;
  color: var(--color-muted);
}

.update-summary {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.6;
  flex: 1;
}

.update-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: auto;
}

/* 目录预览 */
.catalog-preview-section {
  padding: 64px 0;
}

.catalog-layout {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.catalog-list-wrap .section-header {
  margin-bottom: 24px;
}

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

.catalog-item {
  border-bottom: 1px solid var(--color-border);
}

.catalog-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 8px;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-ink);
  transition: color var(--transition), padding-left var(--transition);
}

.catalog-link:hover {
  color: var(--color-primary);
  padding-left: 14px;
}

.catalog-figure {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
}

.catalog-image {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.catalog-figure figcaption {
  padding: 16px 20px;
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
}

/* 流程预览 */
.process-preview-section {
  background-color: var(--color-white);
  padding: 64px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.process-preview-section .section-header {
  max-width: var(--container-width);
  margin: 0 auto 40px;
  padding: 0 24px;
}

.process-steps {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.process-step {
  text-align: left;
  padding: 24px;
  background-color: var(--color-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
}

.step-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.step-desc {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
}

.process-cta {
  max-width: var(--container-width);
  margin: 32px auto 0;
  padding: 0 24px;
  text-align: center;
}

/* FAQ 摘要 */
.faq-summary-section {
  padding: 64px 0;
}

.faq-summary-section .section-header {
  max-width: var(--container-width);
  margin: 0 auto 32px;
  padding: 0 24px;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto 32px;
  padding: 0 24px;
}

.faq-more-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-primary);
  margin: 0 24px;
}

/* 合作准备 */
.cooperation-prep-section {
  background-color: var(--color-white);
  padding: 64px 0;
  border-top: 1px solid var(--color-border);
}

.prep-content {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.prep-text {
  font-size: 16px;
  color: var(--color-muted);
  line-height: 1.7;
  max-width: 720px;
}

.prep-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ============================================================
   PAGES — 内页通用
   ============================================================ */
.inner-main {
  padding-bottom: 64px;
}

/* 页面标题区通用 */
.page-title-area,
.page-title-block,
.page-title-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px 24px 32px;
}

.page-title-figure,
.page-title-media,
.page-figure {
  margin-top: 20px;
  width: 100%;
  max-width: var(--content-width);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
}

.page-title-figure img,
.page-title-media img,
.page-figure img,
.page-title-image,
.page-title-img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.figure-caption {
  padding: 12px 20px;
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
}

/* 通用双栏布局：主内容 + 侧栏 */
.page-layout {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

.page-layout .main-content {
  min-width: 0;
}

/* 侧栏通用 */
.aside-related {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.aside-block,
.sidebar-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.aside-title,
.sidebar-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.aside-links,
.sidebar-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.aside-link-item,
.sidebar-link-item {
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border);
}

.aside-link-item:last-child,
.sidebar-link-item:last-child {
  border-bottom: none;
}

.aside-link-item a,
.sidebar-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-ink);
  display: block;
  line-height: 1.5;
}

.aside-link-item a:hover,
.sidebar-link:hover {
  color: var(--color-primary);
}

.sidebar-link-desc {
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.5;
  margin-top: 4px;
}

/* ============================================================
   PAGES — 资料目录页
   ============================================================ */
.page-data-directory .page-layout {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

.catalog-intro {
  margin-bottom: 32px;
}

.catalog-categories {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.catalog-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.catalog-card-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.catalog-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background-color: rgba(14, 124, 102, 0.1);
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
}

.catalog-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink);
}

.catalog-desc {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

.catalog-subs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.catalog-sub {
  display: inline-block;
  padding: 4px 12px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.4;
}

.catalog-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
}

.catalog-link .arrow-mark {
  transition: transform var(--transition);
}

.catalog-link:hover .arrow-mark {
  transform: translateX(4px);
}

.field-entry {
  margin-top: 40px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.field-entry-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.field-entry-link {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 14px;
  color: var(--color-ink);
  transition: border-color var(--transition), color var(--transition);
}

.field-entry-link:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ============================================================
   PAGES — 字段说明页
   ============================================================ */
.page-field-spec .page-layout {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

.definition-lead {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 40px;
}

.definition-lead h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.definition-lead p {
  font-size: 16px;
  color: var(--color-muted);
  line-height: 1.7;
}

.field-list {
  margin-bottom: 48px;
}

.field-list > h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 24px;
}

.field-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 16px;
}

.field-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.field-detail {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.field-row {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 12px;
  align-items: start;
}

.field-row dt {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-ink);
  padding-top: 2px;
}

.field-row dd {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.6;
}

.related-terms {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.related-terms h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 16px;
}

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

.related-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

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

.related-list a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-primary);
}

.related-list span {
  font-size: 13px;
  color: var(--color-muted);
}

/* ============================================================
   PAGES — 使用示例页
   ============================================================ */
.page-usage-examples .page-title-area {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px 24px 32px;
}

.scenario-blocks {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.scenario-block {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
  align-items: start;
}

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

.scenario-tag {
  display: inline-block;
  padding: 4px 12px;
  background-color: rgba(14, 124, 102, 0.1);
  color: var(--color-primary);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 12px;
}

.scenario-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.scenario-desc {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.scenario-steps {
  margin-bottom: 16px;
  padding-left: 0;
}

.scenario-steps li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 15px;
  color: var(--color-ink);
  line-height: 1.6;
  margin-bottom: 8px;
}

.scenario-steps li::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 10px;
}

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

.scenario-result {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

.scenario-result strong {
  color: var(--color-primary);
  font-weight: 600;
}

.scenario-figure {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.scenario-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.scenario-link {
  grid-column: 1 / -1;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
}

.next-steps {
  max-width: var(--container-width);
  margin: 48px auto 0;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.next-step-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.next-step-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
}

.next-step-desc {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.6;
  flex: 1;
}

.next-step-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: auto;
}

/* ============================================================
   PAGES — 更新记录页
   ============================================================ */
.page-update-log .page-title-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px 24px 32px;
}

.section-heading {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 24px;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding: 0 24px;
}

.update-timeline {
  max-width: var(--container-width);
  margin: 0 auto 48px;
  padding: 0 24px;
}

.timeline-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.timeline-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  align-items: start;
}

.timeline-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.version-tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  background-color: rgba(14, 124, 102, 0.1);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 700;
  width: fit-content;
}

.update-date {
  font-size: 13px;
  color: var(--color-muted);
}

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

.timeline-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.timeline-desc {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 12px;
}

.inline-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
}

.maintenance-policy {
  max-width: var(--container-width);
  margin: 0 auto 48px;
  padding: 0 24px;
}

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

.policy-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.policy-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.policy-text {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.6;
}

/* 更新记录页相关入口 */
.page-update-log aside.related-links {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 48px;
  display: block;
}

.related-heading {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 16px;
}

.page-update-log .related-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-update-log .related-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.page-update-log .related-item a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-primary);
}

.related-desc {
  font-size: 13px;
  color: var(--color-muted);
}

/* ============================================================
   PAGES — 引用规则页
   ============================================================ */
.page-citation-rules .page-title-block {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px 24px 32px;
}

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

.rule-map-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 48px;
}

.rule-map-text .section-desc {
  margin-top: 8px;
}

.rule-figure {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.rule-image {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.rule-figure figcaption {
  padding: 12px 20px;
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
}

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

.rule-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.rule-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.rule-card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

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

.rule-list li {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.6;
  padding-left: 20px;
  position: relative;
}

.rule-list li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
}

.marking-guide {
  margin-bottom: 48px;
}

.marking-guide .section-desc {
  margin-bottom: 24px;
}

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

.marking-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.marking-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.marking-text {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.6;
}

.example-block {
  margin-bottom: 48px;
}

.example-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.example-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-muted);
  margin-bottom: 12px;
}

.example-quote {
  background-color: var(--color-bg);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  margin-bottom: 16px;
}

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

.example-note {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
}

/* 引用规则页相关入口 */
.page-citation-rules .related-links {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 48px;
  display: block;
}

.related-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 16px;
}

.page-citation-rules .related-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-citation-rules .related-list li {
  margin-bottom: 0;
}

.page-citation-rules .related-list a {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 14px;
  color: var(--color-ink);
  transition: border-color var(--transition), color var(--transition);
}

.page-citation-rules .related-list a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ============================================================
   PAGES — 合作流程页
   ============================================================ */
.page-cooperation .page-title-block {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px 24px 32px;
}

.page-title-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.page-title-inner .page-lead {
  margin: 0;
}

.prep-list,
.process-steps,
.need-template {
  max-width: var(--container-width);
  margin: 0 auto 48px;
  padding: 0 24px;
}

.prep-list .section-heading,
.process-steps .section-heading,
.need-template .section-heading {
  max-width: none;
  padding: 0;
  margin-bottom: 24px;
}

.section-heading p {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.6;
  margin-top: 8px;
}

.prep-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.prep-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.prep-item h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink);
}

.prep-item p {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.6;
  flex: 1;
}

.prep-required {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  background-color: rgba(228, 87, 46, 0.1);
  color: var(--color-coral);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  width: fit-content;
}

.prep-optional {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  background-color: rgba(14, 124, 102, 0.1);
  color: var(--color-primary);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  width: fit-content;
}

.process-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.process-step {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
}

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

.step-content h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.step-content p {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 8px;
}

.step-output {
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 500;
}

.template-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.template-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.template-item h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.template-item p {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.6;
}

.next-links {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 48px;
}

.next-links-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.next-link-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.next-link-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(30, 41, 59, 0.08);
}

.next-link-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink);
}

.next-link-card p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
}

/* ============================================================
   PAGES — FAQ 页
   ============================================================ */
.page-faq .page-title-area {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px 24px 32px;
}

.page-title-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.page-title-text .page-lead {
  margin: 0;
}

.page-title-media {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.page-title-img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-faq .page-layout {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

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

.faq-group {
  margin-bottom: 40px;
}

.faq-group-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.faq-question-text {
  flex: 1;
}

.faq-toggle-icon {
  font-size: 22px;
  font-weight: 400;
  color: var(--color-primary);
  flex-shrink: 0;
  transition: transform var(--transition);
}

.faq-item[open] .faq-toggle-icon {
  transform: rotate(45deg);
}

.faq-answer-text {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.7;
}

/* ============================================================
   PAGES — 404
   ============================================================ */
.site-error {
  background-color: var(--color-bg);
}

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  flex: 1;
}

.error-section {
  text-align: center;
  max-width: 560px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
}

.error-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.error-code {
  font-size: 72px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 16px;
}

.error-desc {
  font-size: 16px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 24px;
}

.error-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 12px 28px;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 500;
  transition: background-color var(--transition);
}

.error-link:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
}

/* ============================================================
   RESPONSIVE — 响应式
   ============================================================ */
@media (max-width: 1023px) {
  .header-inner {
    padding: 0 20px;
  }

  .brand-tagline {
    display: none;
  }

  .site-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 8px 24px rgba(30, 41, 59, 0.1);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .site-nav .nav-list {
    flex-direction: column;
    align-items: stretch;
    padding: 12px 20px 20px;
    gap: 4px;
  }

  .nav-link {
    padding: 12px 16px;
    white-space: normal;
    font-size: 16px;
  }

  .menu-toggle {
    display: flex;
  }

  /* 首页模块 */
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  .update-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .catalog-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  /* 内页双栏 */
  .page-layout,
  .page-data-directory .page-layout,
  .page-field-spec .page-layout,
  .page-faq .page-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .aside-related {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  /* 使用示例 */
  .scenario-block {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .scenario-figure {
    max-width: 480px;
  }

  .scenario-link {
    grid-column: 1;
  }

  /* 更新记录 */
  .timeline-item {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

  /* 引用规则 */
  .rule-map-intro {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .rule-grid {
    grid-template-columns: 1fr;
  }

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

  /* 合作流程 */
  .page-title-inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .prep-grid,
  .template-grid {
    grid-template-columns: 1fr;
  }

  .next-links-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* FAQ */
  .page-title-wrap {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

@media (max-width: 767px) {
  .header-inner {
    padding: 0 16px;
    height: 64px;
  }

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

  .site-nav {
    top: 64px;
  }

  /* 首页 */
  .hero-section {
    padding: 40px 0 48px;
  }

  .hero-layout {
    padding: 0 16px;
    gap: 24px;
  }

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

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

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

  .service-overview-section,
  .latest-updates-section,
  .catalog-preview-section,
  .process-preview-section,
  .faq-summary-section,
  .cooperation-prep-section {
    padding: 48px 0;
  }

  .service-overview-section .section-header,
  .latest-updates-section .section-header,
  .process-preview-section .section-header,
  .faq-summary-section .section-header {
    padding: 0 16px;
  }

  .service-list {
    grid-template-columns: 1fr;
    padding: 0 16px;
    gap: 16px;
  }

  .update-list {
    padding: 0 16px;
  }

  .catalog-layout {
    padding: 0 16px;
    gap: 24px;
  }

  .process-steps {
    grid-template-columns: 1fr;
    padding: 0 16px;
    gap: 16px;
  }

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

  .faq-more-link {
    margin: 0 16px;
  }

  .prep-content {
    padding: 0 16px;
  }

  /* 内页通用 */
  .breadcrumb {
    padding: 16px 16px 0;
  }

  .page-header {
    padding: 12px 16px 8px;
  }

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

  .page-title-area,
  .page-title-block,
  .page-title-section {
    padding: 16px 16px 24px;
  }

  .page-layout,
  .page-data-directory .page-layout,
  .page-field-spec .page-layout,
  .page-faq .page-layout {
    padding: 0 16px;
    gap: 24px;
  }

  .aside-related {
    display: flex;
    flex-direction: column;
  }

  /* 字段说明 */
  .field-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .field-card {
    padding: 20px;
  }

  /* 使用示例 */
  .scenario-blocks {
    padding: 0 16px;
    gap: 16px;
  }

  .scenario-block {
    padding: 20px;
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .next-steps {
    grid-template-columns: 1fr;
    padding: 0 16px;
    gap: 16px;
  }

  /* 更新记录 */
  .update-timeline,
  .maintenance-policy {
    padding: 0 16px;
  }

  .policy-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .section-heading {
    padding: 0 16px;
  }

  /* 引用规则 */
  .page-container {
    padding: 0 16px;
  }

  .rule-grid {
    gap: 16px;
  }

  .rule-card {
    padding: 20px;
  }

  .marking-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .marking-item {
    padding: 20px;
  }

  .example-card {
    padding: 20px;
  }

  /* 合作流程 */
  .prep-list,
  .process-steps,
  .need-template {
    padding: 0 16px;
  }

  .prep-list .section-heading,
  .process-steps .section-heading,
  .need-template .section-heading {
    padding: 0;
  }

  .prep-grid,
  .template-grid {
    gap: 12px;
  }

  .prep-item,
  .template-item {
    padding: 20px;
  }

  .process-step {
    padding: 20px;
    gap: 16px;
  }

  .next-links {
    padding: 0 16px 40px;
  }

  .next-links-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* FAQ */
  .faq-group-title {
    font-size: 20px;
  }

  .faq-question {
    padding: 16px;
    font-size: 15px;
  }

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

  /* 相关入口 */
  .related-links {
    padding: 24px 16px 40px;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 16px 24px;
  }

  .footer-bottom {
    padding: 16px;
  }

  /* 404 */
  .error-section {
    padding: 40px 24px;
  }

  .error-code {
    font-size: 56px;
  }
}

/* 移动导航展开状态 */
.nav-list.is-open {
  display: flex;
}

@media (max-width: 1023px) {
  .site-nav .nav-list {
    display: none;
  }

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

/* ============================================================
   ANIMATIONS — 轻量动效
   ============================================================ */
@media (prefers-reduced-motion: no-preference) {
  .service-item,
  .update-item,
  .catalog-card,
  .field-card,
  .scenario-block,
  .timeline-item,
  .rule-card,
  .marking-item,
  .prep-item,
  .process-step,
  .template-item,
  .next-link-card,
  .next-step-card,
  .policy-card {
    transition: transform var(--transition), box-shadow var(--transition);
  }

  .service-item:hover,
  .catalog-card:hover,
  .field-card:hover,
  .scenario-block:hover,
  .timeline-item:hover,
  .rule-card:hover,
  .marking-item:hover,
  .prep-item:hover,
  .process-step:hover,
  .template-item:hover,
  .next-step-card:hover,
  .policy-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30, 41, 59, 0.06);
  }
}