/* ============================================================
   吃瓜网免费吃瓜 · 整站样式表
   站点：xinwangchina.com
   版本：1.0
   ============================================================ */

/* ============================================================
   Base
   ============================================================ */
:root {
  --color-bg: #F7F9FA;
  --color-text: #2E3A42;
  --color-primary: #18A999;
  --color-primary-light: #E6F5F2;
  --color-border: #E2E8EA;
  --color-white: #FFFFFF;
  --color-footer: #1F2A2F;
  --color-footer-text: #A8B4BA;
  --color-footer-heading: #E8EDEF;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --container-width: 1200px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-card: 0 1px 4px rgba(46, 58, 66, 0.06);
  --shadow-card-hover: 0 4px 12px rgba(46, 58, 66, 0.1);
  --transition-base: 0.25s ease;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
  color: #0E7A6E;
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-text);
}

h1 {
  font-size: 30px;
}

h2 {
  font-size: 22px;
}

h3 {
  font-size: 18px;
}

p {
  margin-bottom: 0;
}

/* 通用容器 */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* 通用区块标题 */
.section-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.section-desc {
  font-size: 15px;
  color: #5A6B74;
  line-height: 1.7;
  max-width: 760px;
}

/* 通用文本链接 */
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-primary);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base), color var(--transition-base);
}

.text-link:hover {
  color: #0E7A6E;
  border-bottom-color: var(--color-primary);
}

.text-link::after {
  content: "→";
  font-size: 14px;
  transition: transform var(--transition-base);
}

.text-link:hover::after {
  transform: translateX(3px);
}

/* ============================================================
   Layout · 全站骨架
   ============================================================ */

/* --- 页头 --- */
.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;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.02em;
}

.brand-name::first-letter {
  color: var(--color-primary);
}

/* 导航 */
.site-nav {
  display: flex;
  align-items: center;
}

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

.nav-item {
  display: inline-block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: #4A5A63;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), color var(--transition-base);
}

.nav-item:hover {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.nav-item.is-current {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  font-weight: 600;
}

/* 移动端汉堡按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-sm);
}

.nav-toggle:hover {
  background-color: var(--color-primary-light);
}

.toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* --- 页脚 --- */
.site-footer {
  background-color: var(--color-footer);
  color: var(--color-footer-text);
  margin-top: 0;
}

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

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-footer-heading);
  margin-bottom: 10px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-footer-text);
  max-width: 320px;
}

.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-footer-heading);
  margin-bottom: 14px;
}

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

.footer-link {
  font-size: 14px;
  color: var(--color-footer-text);
  transition: color var(--transition-base);
}

.footer-link:hover {
  color: var(--color-primary);
}

.footer-bottom {
  padding-top: 20px;
  text-align: center;
}

.copyright {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

/* --- 主内容 --- */
.site-main {
  min-height: 60vh;
}

/* 内页统一布局 */
.inner-main {
  padding: 32px 0 64px;
}

/* 面包屑 */
.breadcrumb {
  max-width: var(--container-width);
  margin: 0 auto 20px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: #7A8A93;
}

.breadcrumb a {
  color: #7A8A93;
  transition: color var(--transition-base);
}

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

.breadcrumb-sep {
  color: #A8B4BA;
  font-size: 12px;
}

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

/* 页面标题区 */
.page-header {
  max-width: var(--container-width);
  margin: 0 auto 12px;
  padding: 0 24px;
}

.page-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}

/* 内页标题下的简介区 */
.page-title-area {
  max-width: var(--container-width);
  margin: 0 auto 36px;
  padding: 0 24px;
}

.page-intro {
  font-size: 16px;
  line-height: 1.8;
  color: #4A5A63;
  max-width: 820px;
}

/* 内页正文容器 */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================================
   Components · 通用组件
   ============================================================ */

/* --- 状态标记 --- */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 12px;
  font-size: 13px;
  font-weight: 500;
  border-radius: 999px;
  white-space: nowrap;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border: 1px solid rgba(24, 169, 153, 0.2);
}

.status-badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: currentColor;
  flex-shrink: 0;
}

/* 各状态变体 */
.status-published {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border-color: rgba(24, 169, 153, 0.2);
}

.status-updated {
  background-color: #E8F1FB;
  color: #2D7BB6;
  border-color: rgba(45, 123, 182, 0.2);
}

.status-pending {
  background-color: #FDF4E3;
  color: #B87A20;
  border-color: rgba(184, 122, 32, 0.2);
}

.status-archived {
  background-color: #EEF0F2;
  color: #6B7A84;
  border-color: rgba(107, 122, 132, 0.2);
}

/* --- FAQ 手风琴 --- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.faq-item:hover {
  border-color: rgba(24, 169, 153, 0.4);
}

.faq-item[open] {
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(24, 169, 153, 0.08);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  user-select: 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-base);
  line-height: 1;
}

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

.faq-answer {
  padding: 0 20px 16px;
  font-size: 15px;
  line-height: 1.75;
  color: #5A6B74;
}

/* --- 表格 --- */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
}

.materials-table,
.status-table,
.legend-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

.materials-table th,
.materials-table td,
.status-table th,
.status-table td,
.legend-table th,
.legend-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

.materials-table thead th,
.status-table thead th,
.legend-table thead th {
  background-color: #F0F4F5;
  font-weight: 600;
  color: var(--color-text);
  font-size: 14px;
  white-space: nowrap;
}

.materials-table tbody tr:last-child td,
.status-table tbody tr:last-child td,
.legend-table tbody tr:last-child td {
  border-bottom: none;
}

.materials-table tbody tr:hover,
.status-table tbody tr:hover,
.legend-table tbody tr:hover {
  background-color: #FAFCFC;
}

/* --- 相关入口（内页通用） --- */
.related-entry {
  max-width: var(--container-width);
  margin: 48px auto 0;
  padding: 0 24px;
}

.related-entry h2 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 16px;
}

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

.related-link {
  display: inline-block;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-base), color var(--transition-base), background-color var(--transition-base);
}

.related-link:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

/* --- 图片与说明 --- */
figure {
  margin: 0;
}

figcaption {
  font-size: 13px;
  color: #7A8A93;
  line-height: 1.6;
  text-align: center;
  padding: 10px 0 0;
}

/* ============================================================
   Components · 首页专属
   ============================================================ */

/* --- 时间线首屏 --- */
.timeline-hero {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: 56px 0 48px;
}

.hero-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: fit-content;
}

.hero-lead {
  font-size: 18px;
  line-height: 1.7;
  color: #4A5A63;
  max-width: 560px;
}

.hero-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base);
  min-height: 44px;
}

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

.btn-primary:hover {
  background-color: #0E7A6E;
  border-color: #0E7A6E;
  color: var(--color-white);
}

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

.btn-secondary:hover {
  background-color: var(--color-primary-light);
}

.hero-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  background-color: #F0F4F5;
}

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

/* --- 摘要框 --- */
.abstract-box {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: 40px 0;
}

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

.abstract-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.abstract-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-text);
}

.abstract-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  white-space: nowrap;
}

.abstract-link:hover {
  color: #0E7A6E;
}

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

.abstract-item {
  padding: 20px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.abstract-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

.abstract-text {
  font-size: 15px;
  line-height: 1.7;
  color: #4A5A63;
}

/* --- 目录锚点 --- */
.toc-section {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: 40px 0;
}

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

.toc-title {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 20px;
}

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

.toc-item a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 15px;
  font-weight: 500;
  transition: border-color var(--transition-base), background-color var(--transition-base), color var(--transition-base);
}

.toc-item a:hover {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.toc-num {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

/* --- 通用区块容器 --- */
.section-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
}

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

.section-head .section-title {
  margin-bottom: 8px;
}

.section-head .section-desc {
  max-width: 720px;
}

.section-footer-link {
  margin-top: 24px;
}

/* --- 业务模块卡片 --- */
.service-modules {
  background-color: var(--color-bg);
}

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

.module-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
}

.module-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
  border-color: rgba(24, 169, 153, 0.3);
}

.module-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background-color: var(--color-primary-light);
  margin-bottom: 4px;
}

.icon-shape {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-sm);
  position: relative;
}

.icon-shape::after {
  content: "";
  position: absolute;
  inset: 4px;
  background-color: var(--color-primary);
  border-radius: 2px;
}

.module-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
}

.module-desc {
  font-size: 14px;
  line-height: 1.7;
  color: #5A6B74;
  flex-grow: 1;
}

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

.module-link:hover {
  color: #0E7A6E;
}

.module-link::after {
  content: "→";
  font-size: 13px;
}

/* --- 机制预览（首页） --- */
.mechanism-preview {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.steps-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 28px;
}

.step-node {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 18px;
  position: relative;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  border-radius: 50%;
  margin-bottom: 12px;
}

.step-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.step-desc {
  font-size: 14px;
  line-height: 1.7;
  color: #5A6B74;
}

.process-figure {
  margin-top: 28px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: #F0F4F5;
}

.process-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

/* --- 角色预览（首页） --- */
.roles-preview {
  background-color: var(--color-bg);
}

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

.role-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.role-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.role-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
}

.role-position {
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 4px;
}

.role-desc {
  font-size: 14px;
  line-height: 1.7;
  color: #5A6B74;
}

/* --- 更新记录预览（首页） --- */
.records-preview {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.records-list {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
  overflow: hidden;
}

.record-row {
  display: grid;
  grid-template-columns: 140px 110px 1fr;
  gap: 16px;
  align-items: center;
  padding: 14px 20px;
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-base);
}

.record-row:last-child {
  border-bottom: none;
}

.record-row:hover {
  background-color: #FAFCFC;
}

.record-name {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
}

.record-desc {
  font-size: 14px;
  color: #5A6B74;
  line-height: 1.6;
}

/* --- FAQ 预览（首页） --- */
.faq-preview {
  background-color: var(--color-bg);
}

/* --- 关联入口（首页） --- */
.related-links {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
}

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

.related-link {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px 16px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 15px;
  font-weight: 500;
  text-align: center;
  transition: border-color var(--transition-base), color var(--transition-base), background-color var(--transition-base);
}

.related-link:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

/* ============================================================
   Pages · 新手入门 start.html
   ============================================================ */

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

.step-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 20px;
}

.step-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 16px;
  padding: 20px 24px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.step-item:hover {
  border-color: rgba(24, 169, 153, 0.4);
  box-shadow: var(--shadow-card);
}

.step-item .step-number {
  width: 40px;
  height: 40px;
  font-size: 16px;
  margin-bottom: 0;
}

.step-content {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.step-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
}

.step-desc {
  font-size: 15px;
  line-height: 1.7;
  color: #4A5A63;
}

.step-criterion {
  font-size: 14px;
  color: #5A6B74;
  background-color: var(--color-bg);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-primary);
}

.step-criterion strong {
  color: var(--color-primary);
  font-weight: 600;
}

/* 需求资料表 */
.materials-section {
  max-width: var(--container-width);
  margin: 0 auto 40px;
  padding: 0 24px;
}

.materials-section .section-desc {
  margin-bottom: 20px;
}

/* 下一步 */
.next-step-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.next-step-desc {
  font-size: 15px;
  line-height: 1.7;
  color: #4A5A63;
  margin-bottom: 16px;
}

.next-step-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* 内页相关入口条 */
.related-links {
  max-width: var(--container-width);
  margin: 48px auto 0;
  padding: 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.related-links-label {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
}

.related-links-item {
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 500;
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-white);
  transition: border-color var(--transition-base), color var(--transition-base);
}

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

/* 引言配图 */
.intro-figure {
  max-width: var(--container-width);
  margin: 0 auto 40px;
  padding: 0 24px;
}

.intro-image {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.figure-caption {
  font-size: 13px;
  color: #7A8A93;
  text-align: center;
  padding: 10px 0 0;
}

/* ============================================================
   Pages · 服务机制 mode.html
   ============================================================ */

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

.mechanism-intro-content h2 {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
}

.mechanism-intro-content p {
  font-size: 15px;
  line-height: 1.8;
  color: #4A5A63;
  margin-bottom: 12px;
}

.mechanism-intro-content p:last-child {
  margin-bottom: 0;
}

.mechanism-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: #F0F4F5;
}

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

/* 四个章节 */
.four-sections {
  margin-bottom: 40px;
}

.four-sections > h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 20px;
}

.mechanism-section {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 16px;
}

.mechanism-section h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}

.mechanism-section p {
  font-size: 15px;
  line-height: 1.7;
  color: #4A5A63;
  margin-bottom: 12px;
}

.section-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 0;
}

.section-list li {
  font-size: 14px;
  color: #5A6B74;
  padding-left: 20px;
  position: relative;
  line-height: 1.7;
}

.section-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background-color: var(--color-primary);
}

/* 状态标记表 */
.status-table-section {
  margin-bottom: 40px;
}

.status-table-section h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 20px;
}

/* ============================================================
   Pages · 角色分工 roles.html
   ============================================================ */

.roles-intro-section {
  margin-bottom: 40px;
}

.lead-text {
  font-size: 16px;
  line-height: 1.8;
  color: #4A5A63;
  margin-bottom: 24px;
  max-width: 820px;
}

.roles-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: #F0F4F5;
  margin-bottom: 32px;
}

.roles-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

/* 角色卡片组 */
.roles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.role-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.role-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.role-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.role-card-header h2 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
}

.role-card > .role-desc {
  font-size: 14px;
  line-height: 1.7;
  color: #5A6B74;
}

.role-list-block {
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}

.role-list-block h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.role-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.role-list li {
  font-size: 14px;
  color: #5A6B74;
  padding-left: 18px;
  position: relative;
  line-height: 1.6;
}

.role-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-primary);
}

/* 交接节点 */
.handover-section {
  margin-bottom: 40px;
}

.handover-section > h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 8px;
}

.handover-section > .section-desc {
  margin-bottom: 20px;
}

.handover-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  counter-reset: handover;
}

.handover-item {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 16px;
  padding: 20px 24px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  align-items: start;
}

.handover-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  border-radius: 50%;
}

.handover-content h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.handover-content p {
  font-size: 14px;
  line-height: 1.7;
  color: #5A6B74;
  margin-bottom: 6px;
}

.confirm-method {
  font-size: 14px;
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-top: 4px;
}

/* ============================================================
   Pages · 更新记录 records.html
   ============================================================ */

.page-title-block {
  max-width: var(--container-width);
  margin: 0 auto 36px;
  padding: 0 24px;
}

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

.status-list-section .section-title {
  margin-bottom: 20px;
}

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

.status-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 16px;
  align-items: start;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.status-item:hover {
  border-color: rgba(24, 169, 153, 0.4);
  box-shadow: var(--shadow-card);
}

.column-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
}

.status-item .status-badge {
  grid-column: 2;
  grid-row: 1;
}

.status-desc {
  grid-column: 1 / -1;
  font-size: 14px;
  line-height: 1.7;
  color: #5A6B74;
}

/* 标记图例 */
.legend-section {
  max-width: var(--container-width);
  margin: 0 auto 40px;
  padding: 0 24px;
}

.legend-section .section-title {
  margin-bottom: 20px;
}

.status-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: #F0F4F5;
  margin-bottom: 20px;
}

.status-image {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 6;
  object-fit: cover;
}

/* 栏目入口 */
.column-links {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.column-links .section-title {
  margin-bottom: 20px;
}

.column-link-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.column-link-list a {
  display: inline-block;
  padding: 10px 20px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 14px;
  font-weight: 500;
  transition: border-color var(--transition-base), color var(--transition-base), background-color var(--transition-base);
}

.column-link-list a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

/* ============================================================
   Pages · 常见问题 help.html
   ============================================================ */

.help-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 32px;
  align-items: start;
}

.help-main {
  display: flex;
  flex-direction: column;
  gap: 36px;
  min-width: 0;
}

.faq-group-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-primary-light);
}

.help-sidebar {
  position: sticky;
  top: 84px;
}

.media-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

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

.media-card figcaption {
  padding: 14px 16px;
  font-size: 14px;
  color: #5A6B74;
  text-align: left;
  line-height: 1.7;
}

/* 未解决路径 */
.unresolved-path {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.unresolved-path h2 {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
}

.unresolved-path p {
  font-size: 15px;
  line-height: 1.7;
  color: #4A5A63;
  margin-bottom: 12px;
}

.path-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px 0;
  margin-bottom: 12px;
}

.path-list li {
  font-size: 15px;
  color: #4A5A63;
  padding-left: 24px;
  position: relative;
  line-height: 1.7;
}

.path-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-primary);
}

.related-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 16px;
}

/* ============================================================
   Pages · 404
   ============================================================ */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 48px 24px;
}

.error-section {
  text-align: center;
  max-width: 560px;
}

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

.error-title {
  font-size: 26px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
}

.error-desc {
  font-size: 16px;
  line-height: 1.7;
  color: #5A6B74;
  margin-bottom: 24px;
}

.error-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 28px;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  transition: background-color var(--transition-base);
}

.error-link:hover {
  background-color: #0E7A6E;
  color: var(--color-white);
}

/* ============================================================
   Responsive · 响应式断点
   ============================================================ */

/* --- 平板及以下 1024px --- */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

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

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

  .abstract-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .help-layout {
    grid-template-columns: 1fr;
  }

  .help-sidebar {
    position: static;
  }

  .mechanism-intro {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

  .status-list {
    grid-template-columns: 1fr;
  }
}

/* --- 手机端 768px --- */
@media (max-width: 768px) {
  .header-inner {
    height: 56px;
    padding: 0 16px;
  }

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

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 4px 12px rgba(46, 58, 66, 0.08);
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .site-header {
    position: relative;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 16px 16px;
    display: none;
  }

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

  .nav-item {
    display: block;
    padding: 12px 16px;
    font-size: 16px;
    border-radius: var(--radius-sm);
  }

  .nav-item.is-current {
    background-color: var(--color-primary-light);
  }

  .container,
  .hero-container,
  .abstract-inner,
  .toc-inner,
  .section-inner,
  .breadcrumb,
  .page-header,
  .page-title-area,
  .intro-figure,
  .step-list-section,
  .materials-section,
  .next-step-section,
  .status-list-section,
  .legend-section,
  .column-links,
  .related-entry,
  .related-links {
    padding-left: 16px;
    padding-right: 16px;
  }

  .timeline-hero {
    padding: 40px 0 32px;
  }

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

  .hero-lead {
    font-size: 16px;
  }

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

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

  .abstract-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .abstract-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .toc-list {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .section-inner {
    padding: 36px 16px;
  }

  .module-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .steps-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .roles-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .records-list {
    border-radius: var(--radius-sm);
  }

  .record-row {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 14px 16px;
  }

  .record-row .status-badge {
    width: fit-content;
  }

  .related-list {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .footer-inner {
    padding: 36px 16px 16px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-bottom: 24px;
  }

  .footer-desc {
    max-width: 100%;
  }

  /* 内页 */
  .inner-main {
    padding: 24px 0 48px;
  }

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

  .page-intro {
    font-size: 15px;
  }

  .step-item {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 16px;
  }

  .step-item .step-number {
    width: 36px;
    height: 36px;
  }

  .materials-table {
    font-size: 14px;
  }

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

  .table-wrapper {
    margin: 0 -16px;
    border-radius: 0;
    border-left: none;
    border-right: none;
  }

  .mechanism-section {
    padding: 18px 16px;
  }

  .role-card {
    padding: 18px 16px;
  }

  .handover-item {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 16px;
  }

  .status-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .status-item .status-badge {
    grid-column: 1;
    grid-row: auto;
  }

  .status-desc {
    grid-column: 1;
  }

  .help-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .faq-question {
    padding: 14px 16px;
    font-size: 15px;
  }

  .faq-answer {
    padding: 0 16px 14px;
  }

  .related-links {
    gap: 8px;
  }

  .related-links-item {
    padding: 6px 10px;
    font-size: 13px;
  }
}

/* --- 小屏手机 480px --- */
@media (max-width: 480px) {
  .brand-name {
    font-size: 16px;
  }

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

  .section-title {
    font-size: 20px;
  }

  .module-card {
    padding: 18px 16px;
  }

  .step-node {
    padding: 16px;
  }

  .role-card {
    padding: 16px;
  }

  .related-link {
    font-size: 14px;
    padding: 10px 14px;
  }

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

  .error-title {
    font-size: 22px;
  }
}

/* ============================================================
   无障碍 · 可访问性
   ============================================================ */

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}