/* ==========================================================================
   华人吃瓜网 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* ==========================================================================
   base
   ========================================================================== */

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

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

body {
  margin: 0;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: #1F2933;
  background: #F6F7F9;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: 700;
  line-height: 1.4;
  color: #1F2933;
}

p {
  margin: 0;
}

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

a {
  color: #1A5FB4;
  text-decoration: none;
  text-underline-offset: 3px;
}

a:hover {
  text-decoration: underline;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
  border: 0;
}

figure {
  margin: 0;
}

figcaption {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: #5B6573;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

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

:focus-visible {
  outline: 2px solid #1A5FB4;
  outline-offset: 2px;
}

.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;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 200;
  padding: 10px 16px;
  font-size: 14px;
  color: #FFFFFF;
  background: #1F4E8C;
  border-radius: 4px;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 12px;
  text-decoration: none;
}

/* ==========================================================================
   layout · 全站骨架
   ========================================================================== */

.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: #F6F7F9;
}

/* 页头 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #FFFFFF;
  border-bottom: 1px solid #D7DDE5;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
  min-height: 62px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  min-height: 44px;
  color: #1F4E8C;
  font-weight: 700;
  font-size: 18px;
}

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

.brand-mark {
  display: inline-block;
  width: 8px;
  height: 20px;
  background: #1F4E8C;
  border-radius: 2px;
}

.brand-name {
  white-space: nowrap;
}

/* 主导航 */
.site-nav {
  margin-left: auto;
  min-width: 0;
}

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

.nav-list > li {
  flex: 0 0 auto;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  font-size: 15px;
  color: #1F2933;
  border-radius: 4px;
  white-space: nowrap;
}

.nav-link:hover {
  color: #1A5FB4;
  background: #EEF1F4;
  text-decoration: none;
}

.nav-link.is-current {
  color: #1F4E8C;
  font-weight: 700;
  background: #E8F0FB;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  margin-left: auto;
  padding: 0 10px;
  border: 1px solid #D7DDE5;
  border-radius: 4px;
  background: #FFFFFF;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: #1F2933;
  border-radius: 1px;
}

/* 主内容容器 */
.site-main {
  flex: 1 0 auto;
  width: 100%;
}

.inner-main {
  width: 100%;
  max-width: 940px;
  margin: 0 auto;
  padding: 0 20px 56px;
}

.home-main {
  width: 100%;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 18px 0 4px;
  font-size: 13px;
  line-height: 1.6;
  color: #5B6573;
}

.breadcrumb a {
  color: #1A5FB4;
}

.breadcrumb-sep {
  color: #A3ADBA;
}

.breadcrumb-current {
  color: #5B6573;
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.breadcrumb-list > li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.breadcrumb-list > li + li::before {
  content: "/";
  color: #A3ADBA;
}

/* 页面标题区 */
.page-header {
  padding: 10px 0 0;
}

.page-title {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.35;
  color: #1F4E8C;
}

.page-lead,
.page-subtitle {
  margin-top: 12px;
  max-width: 760px;
  font-size: 16px;
  line-height: 1.8;
  color: #3A4552;
}

.page-title .tag-list,
section.page-title .tag-list {
  margin-top: 12px;
}

/* 页脚 */
.site-footer {
  flex: 0 0 auto;
  margin-top: 40px;
  background: #FFFFFF;
  border-top: 1px solid #D7DDE5;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 32px;
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 40px 20px 28px;
}

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

.footer-brand {
  font-size: 17px;
  font-weight: 700;
  color: #1F4E8C;
}

.footer-desc {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.75;
  color: #3A4552;
}

.footer-note {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed #D7DDE5;
  font-size: 13px;
  line-height: 1.7;
  color: #5B6573;
}

.footer-title {
  margin-bottom: 12px;
  font-size: 14px;
  font-weight: 700;
  color: #1F2933;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  font-size: 14px;
  color: #3A4552;
}

.footer-links a:hover {
  color: #1A5FB4;
}

.footer-bottom {
  border-top: 1px solid #D7DDE5;
  background: #F6F7F9;
}

.footer-bottom p {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 16px 20px;
  font-size: 13px;
  line-height: 1.7;
  color: #5B6573;
}

/* ==========================================================================
   components · 通用组件
   ========================================================================== */

/* 标签 */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.page-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 2px 10px;
  font-size: 12px;
  line-height: 1.4;
  color: #5B6573;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 4px;
  white-space: nowrap;
}

.tag-scope {
  color: #1F4E8C;
  background: #E8F0FB;
  border-color: #C6D9F2;
}

.tag-fit {
  color: #1F6B4A;
  background: #EAF6EF;
  border-color: #C4E3D2;
}

.tag-apply {
  color: #1F6B4A;
  background: #EAF6EF;
  border-color: #C4E3D2;
}

.tag-boundary,
.tag-bound,
.tag-note {
  color: #8A4B12;
  background: #FCF2E5;
  border-color: #EBD3B4;
}

/* 摘要框（多页共用） */
.summary-box {
  margin-top: 24px;
  padding: 22px 24px;
  background: #EEF1F4;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.summary-box > h2,
.summary-title {
  font-size: 20px;
  font-weight: 700;
  color: #1F2933;
}

.summary-box > p {
  margin-top: 10px;
  max-width: 760px;
  font-size: 15px;
  line-height: 1.85;
  color: #3A4552;
}

.summary-main,
.summary-body {
  min-width: 0;
}

.summary-main > p,
.summary-body > p {
  margin-top: 10px;
  max-width: 760px;
  font-size: 15px;
  line-height: 1.85;
  color: #3A4552;
}

.summary-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 14px;
}

.summary-links a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 14px;
  font-weight: 700;
}

.summary-tags {
  margin-top: 14px;
}

/* 正文目录 */
.toc,
.toc-box {
  margin-top: 24px;
  padding: 18px 20px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.toc-title {
  font-size: 14px;
  font-weight: 700;
  color: #1F2933;
}

.toc-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
  margin-top: 10px;
  counter-reset: toc-counter;
}

.toc-list > li {
  position: relative;
  padding-left: 22px;
  min-width: 0;
  counter-increment: toc-counter;
}

.toc-list > li::before {
  content: counter(toc-counter, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-size: 12px;
  line-height: 2.2;
  color: #A3ADBA;
}

.toc-list a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 14px;
  color: #1A5FB4;
}

/* 内容区块 */
.content-section {
  margin-top: 40px;
  padding-top: 8px;
}

.content-section > h2,
.section-h2 {
  font-size: 22px;
  font-weight: 700;
  color: #1F2933;
}

.content-section > h2::after,
.section-h2::after {
  content: "";
  display: block;
  width: 36px;
  height: 3px;
  margin-top: 8px;
  background: #1F4E8C;
  border-radius: 2px;
}

.content-section > p {
  margin-top: 14px;
  max-width: 760px;
  font-size: 16px;
  line-height: 1.85;
  color: #3A4552;
}

.section-intro {
  margin-top: 14px;
  max-width: 760px;
  font-size: 15px;
  line-height: 1.85;
  color: #5B6573;
}

/* 图片容器 */
.section-figure,
.section-media,
.media-figure,
.content-figure,
.faq-figure {
  margin-top: 20px;
  padding: 10px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.section-figure img,
.section-media img,
.media-figure img,
.content-figure img,
.faq-figure img {
  width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: cover;
  border-radius: 4px;
  background: #EEF1F4;
}

/* 步骤列表（通用） */
.step-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 20px;
}

.step-item {
  position: relative;
  padding: 16px 18px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-left: 3px solid #1F4E8C;
  border-radius: 6px;
}

.step-item h3,
.step-title {
  font-size: 17px;
  font-weight: 700;
  color: #1F2933;
}

.step-item > p {
  margin-top: 6px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

.step-output,
.step-meta {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: #5B6573;
}

/* 关联条目 */
.related,
.related-box,
.related.content-section {
  margin-top: 44px;
  padding: 22px 24px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.related > h2,
.related-box > h2 {
  font-size: 20px;
  font-weight: 700;
  color: #1F2933;
}

.related-desc,
.related-intro {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.75;
  color: #5B6573;
}

.related-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin-top: 14px;
}

.related-list > li {
  min-width: 0;
}

.related-list a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 12px;
  font-size: 14px;
  color: #1A5FB4;
  background: #F6F7F9;
  border: 1px solid #D7DDE5;
  border-radius: 4px;
}

.related-list a:hover {
  color: #FFFFFF;
  background: #1A5FB4;
  border-color: #1A5FB4;
  text-decoration: none;
}

/* 返回顶部 */
.back-to-top {
  position: fixed;
  right: 20px;
  bottom: 24px;
  z-index: 90;
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: #FFFFFF;
  background: #1F4E8C;
  border-radius: 6px;
  box-shadow: 0 2px 8px rgba(31, 41, 51, 0.18);
}

.back-to-top.is-visible {
  display: inline-flex;
}

.back-to-top::before {
  content: "↑";
  font-size: 18px;
  line-height: 1;
}

.back-to-top:hover {
  background: #1A5FB4;
}

/* 数据表格 */
.table-wrap {
  margin-top: 20px;
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
  background: #FFFFFF;
}

.data-table {
  width: 100%;
  min-width: 640px;
  font-size: 14px;
  line-height: 1.65;
}

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

.table-caption {
  padding: 12px 14px;
  font-size: 13px;
  color: #5B6573;
  text-align: left;
  border-bottom: 1px solid #D7DDE5;
}

.data-table th,
.data-table td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid #E4E9EF;
}

.data-table thead th {
  font-weight: 700;
  color: #1F2933;
  background: #EEF1F4;
  white-space: nowrap;
}

.data-table tbody tr:last-child th,
.data-table tbody tr:last-child td {
  border-bottom: 0;
}

.data-table tbody tr:hover {
  background: #F6F7F9;
}

.table-note {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: #5B6573;
}

/* 两栏通用容器 */
.two-col,
.tools-grid,
.dimension-grid,
.role-grid,
.fit-columns,
.duty-columns {
  display: grid;
  gap: 16px;
  margin-top: 20px;
}

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

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

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

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

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

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

.col-block,
.dimension-col,
.role-card,
.fit-col,
.duty-col {
  min-width: 0;
  padding: 18px 20px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.col-block h3,
.dimension-col h3,
.role-card h3,
.fit-col h3,
.duty-col h3 {
  font-size: 17px;
  font-weight: 700;
  color: #1F2933;
}

.dimension-col p,
.role-card p,
.duty-col p {
  margin-top: 8px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

.plain-list,
.duty-list {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.plain-list > li,
.duty-item {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

.plain-list > li::before,
.duty-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: #1F4E8C;
  border-radius: 50%;
}

.duty-title {
  font-weight: 700;
  color: #1F2933;
}

.duty-desc {
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.75;
  color: #5B6573;
}

/* 适用 / 不适用 列表 */
.fit-yes {
  background: #F4FAF6;
  border-color: #C4E3D2;
}

.fit-no {
  background: #FDF7F1;
  border-color: #EBD3B4;
}

.fit-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 12px;
}

.fit-list > li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

.fit-list > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #1F6B4A;
}

.fit-no .fit-list > li::before {
  background: #8A4B12;
}

.fit-title {
  font-weight: 700;
  color: #1F2933;
}

.fit-desc {
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.75;
  color: #5B6573;
}

/* ==========================================================================
   pages · 首页
   ========================================================================== */

/* 首屏 */
.hero {
  background: #FFFFFF;
  border-bottom: 1px solid #D7DDE5;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 36px;
  align-items: start;
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 40px 20px 32px;
}

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

.hero-kicker {
  display: inline-block;
  padding: 3px 10px;
  font-size: 12px;
  line-height: 1.6;
  color: #1F4E8C;
  background: #E8F0FB;
  border: 1px solid #C6D9F2;
  border-radius: 4px;
}

.hero-title {
  margin-top: 14px;
  font-size: 32px;
  font-weight: 700;
  line-height: 1.35;
  color: #1F4E8C;
}

.hero-lead {
  margin-top: 14px;
  max-width: 620px;
  font-size: 16px;
  line-height: 1.85;
  color: #3A4552;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  font-size: 15px;
  font-weight: 700;
  border-radius: 4px;
  border: 1px solid transparent;
}

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

.btn-primary {
  color: #FFFFFF;
  background: #1F4E8C;
  border-color: #1F4E8C;
}

.btn-primary:hover {
  background: #1A5FB4;
  border-color: #1A5FB4;
}

.btn-ghost {
  color: #1F4E8C;
  background: #FFFFFF;
  border-color: #1F4E8C;
}

.btn-ghost:hover {
  background: #E8F0FB;
}

.hero-policy {
  margin-top: 18px;
  padding: 10px 14px;
  font-size: 14px;
  line-height: 1.7;
  color: #3A4552;
  background: #F6F7F9;
  border-left: 3px solid #1F4E8C;
  border-radius: 0 4px 4px 0;
}

.hero-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.flow-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 10px 12px;
  font-size: 14px;
  line-height: 1.6;
  color: #3A4552;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 4px;
}

.flow-num {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  font-size: 12px;
  font-weight: 700;
  color: #FFFFFF;
  background: #1F4E8C;
  border-radius: 50%;
}

.hero-media {
  min-width: 0;
  padding: 10px;
  background: #F6F7F9;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.hero-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 4px;
  background: #EEF1F4;
}

.hero-media-caption {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: #5B6573;
}

/* 问题入口 */
.problem-entries {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 32px 20px 8px;
}

.section-title {
  font-size: 22px;
  font-weight: 700;
  color: #1F2933;
}

.section-title::after {
  content: "";
  display: block;
  width: 36px;
  height: 3px;
  margin-top: 8px;
  background: #1F4E8C;
  border-radius: 2px;
}

.section-desc {
  margin-top: 12px;
  max-width: 760px;
  font-size: 15px;
  line-height: 1.85;
  color: #5B6573;
}

.entry-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 20px;
}

.entry-card {
  min-width: 0;
  padding: 16px 18px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.entry-card:hover {
  border-color: #1A5FB4;
}

.entry-title {
  font-size: 16px;
  font-weight: 700;
}

.entry-title a {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  color: #1A5FB4;
}

.entry-text {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.75;
  color: #5B6573;
}

/* 首页页内目录 */
.home-anchor {
  background: #EEF1F4;
  border-top: 1px solid #D7DDE5;
  border-bottom: 1px solid #D7DDE5;
}

.home-anchor-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 20px;
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 14px 20px;
}

.anchor-label {
  font-size: 13px;
  font-weight: 700;
  color: #1F4E8C;
  white-space: nowrap;
}

.anchor-list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 6px;
}

.anchor-list a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 10px;
  font-size: 14px;
  color: #1A5FB4;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 4px;
}

.anchor-list a:hover {
  background: #E8F0FB;
  text-decoration: none;
}

/* 首页正文容器 */
.home-body {
  width: 100%;
  max-width: 940px;
  margin: 0 auto;
  padding: 0 20px 56px;
}

.home-body .section {
  margin-top: 40px;
}

/* 首页摘要框 */
.home-body .summary-box {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 24px;
  align-items: start;
}

.summary-media {
  min-width: 0;
  padding: 8px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 4px;
}

.summary-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 3px;
  background: #EEF1F4;
}

/* 首页服务范围 */
.scope-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.scope-col {
  min-width: 0;
  padding: 18px 20px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.scope-col:first-child {
  border-top: 3px solid #1F4E8C;
}

.scope-col:last-child {
  border-top: 3px solid #8A4B12;
}

.col-title {
  font-size: 17px;
  font-weight: 700;
  color: #1F2933;
}

.scope-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 12px;
  counter-reset: scope-counter;
}

.scope-list > li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
  counter-increment: scope-counter;
}

.scope-list > li::before {
  content: counter(scope-counter);
  position: absolute;
  left: 0;
  top: 3px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  font-size: 11px;
  font-weight: 700;
  color: #1F4E8C;
  background: #E8F0FB;
  border-radius: 50%;
}

.scope-col:last-child .scope-list > li::before {
  color: #8A4B12;
  background: #FCF2E5;
}

.scope-media {
  margin-top: 20px;
  padding: 10px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.scope-media img {
  width: 100%;
  height: auto;
  max-height: 380px;
  object-fit: cover;
  border-radius: 4px;
  background: #EEF1F4;
}

.scope-media-caption {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: #5B6573;
}

/* 首页方法预览 */
.method-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 24px;
  align-items: start;
  margin-top: 20px;
}

.method-layout .step-list {
  margin-top: 0;
}

.method-layout .step-item {
  padding: 14px 16px;
}

.method-media {
  min-width: 0;
  padding: 10px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.method-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: 4px;
  background: #EEF1F4;
}

.method-media-caption {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: #5B6573;
}

.section-more {
  margin-top: 14px;
  font-size: 14px;
}

.section-more a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-weight: 700;
}

/* 首页工具预览 */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 20px;
}

.tool-item {
  min-width: 0;
  padding: 16px 18px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.tool-title {
  font-size: 16px;
  font-weight: 700;
  color: #1F2933;
}

.tool-text {
  margin-top: 6px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

.tool-archive {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed #D7DDE5;
  font-size: 13px;
  line-height: 1.7;
  color: #5B6573;
}

/* 首页交付标准预览 */
.standard-list {
  margin-top: 20px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
  overflow: hidden;
}

.standard-row {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid #E4E9EF;
}

.standard-row:last-child {
  border-bottom: 0;
}

.standard-name {
  font-size: 15px;
  font-weight: 700;
  color: #1F4E8C;
}

.standard-text {
  font-size: 14px;
  line-height: 1.75;
  color: #3A4552;
}

.standard-link {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 14px;
  white-space: nowrap;
}

/* 首页复盘预览 */
.review-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 24px;
  align-items: start;
  margin-top: 20px;
}

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

.review-item {
  padding: 16px 18px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.review-title {
  font-size: 16px;
  font-weight: 700;
  color: #1F2933;
}

.review-text {
  margin-top: 6px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

.review-media {
  min-width: 0;
  padding: 10px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.review-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: 4px;
  background: #EEF1F4;
}

.review-media-caption {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: #5B6573;
}

/* 首页答疑摘要 */
.faq-brief-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 20px;
}

.faq-brief {
  padding: 16px 18px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.faq-brief-q {
  font-size: 16px;
  font-weight: 700;
  color: #1F2933;
}

.faq-brief-a {
  margin-top: 6px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

.faq-brief-link {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  margin-top: 6px;
  font-size: 14px;
}

/* 首页团队职责 */
.roles-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 24px;
  align-items: start;
  margin-top: 20px;
}

.roles-layout .role-grid {
  margin-top: 0;
}

.role-item {
  min-width: 0;
  padding: 16px 18px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.role-title {
  font-size: 16px;
  font-weight: 700;
  color: #1F2933;
}

.role-text {
  margin-top: 6px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

.roles-media {
  min-width: 0;
  padding: 10px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.roles-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: 4px;
  background: #EEF1F4;
}

.roles-media-caption {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: #5B6573;
}

/* 首页合作入口 */
.cooperation-cta {
  margin-top: 40px;
  padding: 22px 24px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.prep-steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.prep-step {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-width: 0;
  padding: 14px 16px;
  background: #F6F7F9;
  border: 1px solid #D7DDE5;
  border-radius: 4px;
}

.prep-num {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  font-size: 13px;
  font-weight: 700;
  color: #FFFFFF;
  background: #1F4E8C;
  border-radius: 50%;
}

.prep-title {
  font-size: 15px;
  font-weight: 700;
  color: #1F2933;
}

.prep-text {
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.75;
  color: #5B6573;
}

.prep-link {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  margin-top: 4px;
  font-size: 14px;
}

/* ==========================================================================
   pages · 服务方法
   ========================================================================== */

.page-method .principle-item {
  margin-top: 14px;
  padding: 16px 18px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-left: 3px solid #1F4E8C;
  border-radius: 6px;
}

.page-method .principle-item h3 {
  font-size: 17px;
  font-weight: 700;
  color: #1F2933;
}

.page-method .principle-item p {
  margin-top: 6px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

.principle-premise {
  padding: 8px 12px;
  font-size: 13px;
  line-height: 1.7;
  color: #5B6573;
  background: #F6F7F9;
  border-radius: 4px;
}

.page-method .step-item {
  padding-left: 56px;
}

.page-method .step-item::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 18px;
  width: 22px;
  height: 22px;
  background: #E8F0FB;
  border: 1px solid #C6D9F2;
  border-radius: 50%;
}

.page-method .step-list {
  counter-reset: method-step;
}

.page-method .step-item {
  counter-increment: method-step;
}

.page-method .step-item::after {
  content: counter(method-step);
  position: absolute;
  left: 18px;
  top: 18px;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: #1F4E8C;
}

.page-method .tool-item {
  padding: 16px 18px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.page-method .tool-item h3 {
  font-size: 16px;
  font-weight: 700;
  color: #1F2933;
}

.page-method .tool-item p {
  margin-top: 6px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

.page-method .tool-item .tool-archive {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed #D7DDE5;
  font-size: 13px;
  line-height: 1.7;
  color: #5B6573;
}

/* ==========================================================================
   pages · 问题清单
   ========================================================================== */

.page-selection .page-shell {
  width: 100%;
  min-width: 0;
}

.page-selection .summary-box {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.checklist-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  min-width: 0;
  padding: 14px 18px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.checklist-num {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  font-size: 13px;
  font-weight: 700;
  color: #1F4E8C;
  background: #E8F0FB;
  border-radius: 50%;
}

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

.checklist-q {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.7;
  color: #1F2933;
}

.checklist-hint {
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.75;
  color: #3A4552;
}

.checklist-link {
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.7;
  color: #5B6573;
}

.checklist-link a {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
}

.dimension-col {
  border-top: 3px solid #1F4E8C;
}

.misjudge-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 20px;
}

.misjudge-item {
  padding: 16px 18px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.misjudge-wrong {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.75;
  color: #8A4B12;
}

.misjudge-wrong::before {
  content: "×";
  position: absolute;
  left: 0;
  top: 0;
  font-weight: 700;
}

.misjudge-right {
  position: relative;
  margin-top: 8px;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

.misjudge-right::before {
  content: "√";
  position: absolute;
  left: 0;
  top: 0;
  font-weight: 700;
  color: #1F6B4A;
}

.verify-steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 20px;
  counter-reset: verify-counter;
}

.verify-step {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  min-width: 0;
  padding: 16px 18px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
  counter-increment: verify-counter;
}

.verify-num {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  font-size: 13px;
  font-weight: 700;
  color: #FFFFFF;
  background: #1F4E8C;
  border-radius: 50%;
}

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

.verify-body h3 {
  font-size: 16px;
  font-weight: 700;
  color: #1F2933;
}

.verify-body p {
  margin-top: 4px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

/* ==========================================================================
   pages · 交付标准
   ========================================================================== */

.page-standards .page-shell {
  width: 100%;
  min-width: 0;
}

.deliverable-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 20px;
}

.deliverable-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  min-width: 0;
  padding: 16px 18px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.item-index {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  font-size: 13px;
  font-weight: 700;
  color: #1F4E8C;
  background: #E8F0FB;
  border: 1px solid #C6D9F2;
  border-radius: 4px;
}

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

.item-body h3 {
  font-size: 16px;
  font-weight: 700;
  color: #1F2933;
}

.item-body p {
  margin-top: 4px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

.rule-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 20px;
}

.rule-item {
  padding: 16px 18px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.rule-item h3 {
  font-size: 16px;
  font-weight: 700;
  color: #1F2933;
}

.rule-item p {
  margin-top: 6px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

.page-standards .two-col .col-block {
  border-top: 3px solid #1F4E8C;
}

/* ==========================================================================
   pages · 复盘机制
   ========================================================================== */

.page-review .summary {
  margin-top: 24px;
  padding: 22px 24px;
  background: #EEF1F4;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.page-review .summary-inner {
  min-width: 0;
}

.page-review .summary-title {
  font-size: 20px;
  font-weight: 700;
  color: #1F2933;
}

.page-review .summary-body {
  margin-top: 10px;
}

.page-review .summary-body p {
  max-width: 760px;
  font-size: 15px;
  line-height: 1.85;
  color: #3A4552;
}

.page-review .summary-body p + p {
  margin-top: 8px;
}

.page-review .toc-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
}

.page-review .toc-title {
  margin: 0;
}

.page-review .toc-list {
  margin-top: 0;
}

.toc-toggle {
  display: none;
  min-height: 36px;
  padding: 0 12px;
  font-size: 13px;
  color: #1A5FB4;
  background: #F6F7F9;
  border: 1px solid #D7DDE5;
  border-radius: 4px;
}

.page-review .step-item {
  padding: 16px 18px;
}

.step-head {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.step-no {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  font-size: 12px;
  font-weight: 700;
  color: #FFFFFF;
  background: #1F4E8C;
  border-radius: 50%;
}

.page-review .step-title {
  font-size: 16px;
  font-weight: 700;
  color: #1F2933;
}

.step-desc {
  margin-top: 6px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

.field-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 20px;
}

.field-item {
  min-width: 0;
  padding: 16px 18px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.field-item h3 {
  font-size: 16px;
  font-weight: 700;
  color: #1F4E8C;
}

.field-item p {
  margin-top: 6px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

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

.page-review .role-item h3 {
  font-size: 16px;
  font-weight: 700;
  color: #1F2933;
}

.page-review .role-item p {
  margin-top: 6px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

.track-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 20px;
}

.track-item {
  padding: 16px 18px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.track-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.track-name {
  font-size: 16px;
  font-weight: 700;
  color: #1F2933;
}

.status {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 1px 10px;
  font-size: 12px;
  line-height: 1.4;
  border-radius: 4px;
  border: 1px solid transparent;
  white-space: nowrap;
}

.status-pending {
  color: #8A4B12;
  background: #FCF2E5;
  border-color: #EBD3B4;
}

.status-recorded {
  color: #1F6B4A;
  background: #EAF6EF;
  border-color: #C4E3D2;
}

.status-supplement {
  color: #1F4E8C;
  background: #E8F0FB;
  border-color: #C6D9F2;
}

.track-desc {
  margin-top: 8px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

/* ==========================================================================
   pages · 常见问题
   ========================================================================== */

.page-faq .page-layout {
  width: 100%;
  min-width: 0;
}

.page-faq .page-title {
  margin-top: 10px;
}

.faq-category-nav {
  margin-top: 26px;
  padding: 18px 20px;
  background: #EEF1F4;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.category-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.category-list a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  font-size: 14px;
  color: #1A5FB4;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 4px;
}

.category-list a:hover {
  background: #E8F0FB;
  text-decoration: none;
}

.page-faq .faq-figure img {
  max-height: 340px;
}

.faq-group {
  margin-top: 36px;
}

.faq-item {
  margin-top: 12px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 48px;
  padding: 12px 18px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: #1F2933;
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  flex: 0 0 auto;
  font-size: 18px;
  font-weight: 400;
  color: #1A5FB4;
}

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

.faq-item[open] .faq-question {
  border-bottom: 1px solid #E4E9EF;
}

.faq-answer {
  padding: 12px 18px 16px;
}

.faq-answer p {
  font-size: 15px;
  line-height: 1.85;
  color: #3A4552;
}

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

.faq-reading {
  margin-top: 40px;
  padding: 22px 24px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
}

.reading-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 16px;
}

.reading-item {
  min-width: 0;
}

.reading-item a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 14px;
  font-size: 14px;
  color: #1A5FB4;
  background: #F6F7F9;
  border: 1px solid #D7DDE5;
  border-radius: 4px;
}

.reading-item a:hover {
  background: #E8F0FB;
  text-decoration: none;
}

/* ==========================================================================
   pages · 关于我们
   ========================================================================== */

.page-about .summary-box {
  margin-top: 24px;
}

.page-about .content-figure img {
  max-height: 360px;
}

.page-about .role-card {
  border-top: 3px solid #1F4E8C;
}

.principle-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 20px;
  counter-reset: principle-counter;
}

.principle-list > li {
  position: relative;
  padding: 16px 18px 16px 56px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 6px;
  counter-increment: principle-counter;
}

.principle-list > li::before {
  content: counter(principle-counter);
  position: absolute;
  left: 18px;
  top: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  font-size: 12px;
  font-weight: 700;
  color: #FFFFFF;
  background: #1F4E8C;
  border-radius: 50%;
}

.principle-list h3 {
  font-size: 16px;
  font-weight: 700;
  color: #1F2933;
}

.principle-list p {
  margin-top: 4px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

.page-about .step-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.page-about .step-no {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  font-size: 13px;
  font-weight: 700;
  color: #1F4E8C;
  background: #E8F0FB;
  border: 1px solid #C6D9F2;
  border-radius: 50%;
}

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

.step-body h3 {
  font-size: 16px;
  font-weight: 700;
  color: #1F2933;
}

.step-body p {
  margin-top: 4px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

.boundary-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
}

.boundary-list > li {
  position: relative;
  padding: 14px 18px 14px 42px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
  background: #FDF7F1;
  border: 1px solid #EBD3B4;
  border-radius: 6px;
}

.boundary-list > li::before {
  content: "!";
  position: absolute;
  left: 16px;
  top: 15px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  font-size: 12px;
  font-weight: 700;
  color: #FFFFFF;
  background: #8A4B12;
  border-radius: 50%;
}

/* ==========================================================================
   pages · 合作说明
   ========================================================================== */

.page-cooperation .summary-box {
  margin-top: 24px;
}

.page-cooperation .content-figure img {
  max-height: 360px;
}

.checklist {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
  counter-reset: prep-counter;
}

.page-cooperation .checklist-item {
  display: block;
  padding: 14px 18px 14px 52px;
  position: relative;
  counter-increment: prep-counter;
}

.page-cooperation .checklist-item::before {
  content: counter(prep-counter);
  position: absolute;
  left: 16px;
  top: 15px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  font-size: 12px;
  font-weight: 700;
  color: #1F4E8C;
  background: #E8F0FB;
  border: 1px solid #C6D9F2;
  border-radius: 50%;
}

.checklist-title {
  font-size: 16px;
  font-weight: 700;
  color: #1F2933;
}

.checklist-desc {
  margin-top: 4px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

.page-cooperation .step-item {
  padding: 16px 18px;
}

.page-cooperation .step-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
  color: #1F2933;
}

.step-num {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  font-size: 12px;
  font-weight: 700;
  color: #FFFFFF;
  background: #1F4E8C;
  border-radius: 50%;
}

.page-cooperation .step-desc {
  margin-top: 6px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

.page-cooperation .step-desc a {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
}

.page-cooperation .duty-col {
  border-top: 3px solid #1F4E8C;
}

.page-cooperation .duty-col:last-child {
  border-top-color: #1F6B4A;
}

.feedback-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
}

.feedback-item {
  padding: 16px 18px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-left: 3px solid #1A5FB4;
  border-radius: 6px;
}

.feedback-title {
  font-size: 16px;
  font-weight: 700;
  color: #1F2933;
}

.feedback-desc {
  margin-top: 4px;
  font-size: 15px;
  line-height: 1.8;
  color: #3A4552;
}

/* ==========================================================================
   pages · 404
   ========================================================================== */

.site-error .error-main {
  flex: 1 0 auto;
  width: 100%;
  padding: 40px 20px 56px;
}

.error-inner {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  padding: 32px 28px;
  background: #FFFFFF;
  border: 1px solid #D7DDE5;
  border-radius: 8px;
}

.error-code {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.1;
  color: #1F4E8C;
}

.error-title {
  margin-top: 8px;
  font-size: 24px;
  font-weight: 700;
  color: #1F2933;
}

.error-text {
  margin-top: 12px;
  font-size: 15px;
  line-height: 1.85;
  color: #3A4552;
}

.error-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.error-links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px;
  font-size: 14px;
  color: #1A5FB4;
  background: #F6F7F9;
  border: 1px solid #D7DDE5;
  border-radius: 4px;
}

.error-links a:hover {
  background: #E8F0FB;
  text-decoration: none;
}

.error-home {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 20px;
  padding: 0 20px;
  font-size: 15px;
  font-weight: 700;
  color: #FFFFFF;
  background: #1F4E8C;
  border-radius: 4px;
}

.error-home:hover {
  background: #1A5FB4;
  text-decoration: none;
}

/* ==========================================================================
   responsive
   ========================================================================== */

@media (max-width: 960px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .hero-media {
    max-width: 560px;
  }

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

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

  .home-body .summary-box,
  .method-layout,
  .review-layout,
  .roles-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .summary-media,
  .method-media,
  .review-media,
  .roles-media {
    max-width: 520px;
  }

  .method-media img,
  .review-media img,
  .roles-media img {
    aspect-ratio: 16 / 9;
  }

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

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    margin-left: 0;
    padding: 0 16px;
    background: #FFFFFF;
    border-bottom: 1px solid #D7DDE5;
    box-shadow: 0 8px 18px rgba(31, 41, 51, 0.08);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0 12px;
  }

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

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

  .nav-link {
    width: 100%;
    min-height: 46px;
    padding: 0 12px;
    font-size: 15px;
    border-radius: 4px;
  }

  .header-inner {
    position: relative;
  }
}

@media (max-width: 768px) {
  body {
    font-size: 15px;
  }

  .header-inner {
    padding: 0 16px;
  }

  .inner-main {
    padding: 0 16px 44px;
  }

  .home-body {
    padding: 0 16px 44px;
  }

  .hero-inner {
    padding: 28px 16px 24px;
  }

  .problem-entries {
    padding: 26px 16px 6px;
  }

  .home-anchor-inner {
    padding: 12px 16px;
  }

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

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

  .section-title,
  .content-section > h2,
  .section-h2 {
    font-size: 20px;
  }

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

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

  .scope-columns,
  .two-col,
  .tools-grid,
  .dimension-grid,
  .role-grid,
  .fit-columns,
  .duty-columns,
  .tool-grid,
  .prep-steps,
  .field-list,
  .reading-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .standard-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
    padding: 14px 16px;
  }

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

  .summary-box,
  .related,
  .related-box,
  .cooperation-cta,
  .faq-reading,
  .toc,
  .toc-box {
    padding: 18px 16px;
  }

  .page-review .summary {
    padding: 18px 16px;
  }

  .toc-list {
    gap: 4px 16px;
  }

  .page-review .toc-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .toc-toggle {
    display: inline-flex;
  }

  .page-review #toc-list {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 2px;
  }

  .page-review #toc-list.is-open {
    display: flex;
  }

  .footer-inner {
    padding: 28px 16px 20px;
  }

  .footer-bottom p {
    padding: 14px 16px;
  }

  .error-inner {
    padding: 24px 20px;
  }

  .error-code {
    font-size: 36px;
  }

  .error-title {
    font-size: 21px;
  }

  .back-to-top {
    right: 14px;
    bottom: 16px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 24px;
  }

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

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

  .hero-actions {
    gap: 10px;
  }

  .btn {
    flex: 1 1 auto;
    padding: 0 16px;
  }

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

  .related-list a,
  .anchor-list a {
    width: 100%;
    justify-content: flex-start;
  }

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

  .faq-answer {
    padding: 10px 14px 14px;
  }

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

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

  .skip-link,
  .back-to-top {
    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;
  }
}