/* ==========================================================================
   91制品 · dqsznz.com 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base
   -------------------------------------------------------------------------- */

:root {
  --green-deep: #1F3D33;
  --green-moss: #6E8B6B;
  --blue-mist: #8FA9A6;
  --clay: #C4714A;
  --paper: #F7F5EF;
  --sand: #E7E1D3;
  --ink: #26302C;
  --white: #FFFFFF;
  --line: #D8D2C4;
  --line-soft: #E4DFD3;

  --font-serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", Georgia, "Times New Roman", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;

  --container: 1200px;
  --radius-s: 6px;
  --radius-m: 8px;
  --gutter: 32px;
}

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

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

body {
  margin: 0;
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.85;
  font-weight: 400;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--green-deep);
  line-height: 1.35;
  margin: 0;
}

h1 {
  font-size: 42px;
}

h2 {
  font-size: 28px;
}

h3 {
  font-size: 20px;
}

p {
  margin: 0 0 16px;
}

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

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

a {
  color: var(--green-deep);
  text-decoration: none;
  transition: color .2s ease, border-color .2s ease, background-color .2s ease;
}

a:hover,
a:focus-visible {
  color: var(--clay);
}

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

figure {
  margin: 0;
}

figcaption {
  font-size: 14px;
  line-height: 1.7;
  color: #5C6660;
}

button {
  font-family: inherit;
  cursor: pointer;
}

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

:focus-visible {
  outline: 2px solid var(--clay);
  outline-offset: 3px;
}

/* --------------------------------------------------------------------------
   layout · 骨架
   -------------------------------------------------------------------------- */

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--paper);
}

.site-header {
  background-color: var(--green-deep);
  color: var(--white);
  border-bottom: 3px solid var(--clay);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px var(--gutter);
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 76px;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: var(--white);
  flex-shrink: 0;
}

.brand:hover,
.brand:focus-visible {
  color: var(--white);
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0;
}

.brand-slogan {
  font-size: 12px;
  line-height: 1.5;
  color: #BFCFC6;
  letter-spacing: 0;
}

.site-nav {
  margin-left: auto;
}

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

.nav-item > a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  font-size: 15px;
  color: #DCE5DF;
  border-radius: var(--radius-s);
  border-bottom: 2px solid transparent;
}

.nav-item > a:hover,
.nav-item > a:focus-visible {
  color: var(--white);
  background-color: rgba(255, 255, 255, .08);
  border-bottom-color: var(--clay);
}

.nav-item.is-current > a,
.nav-item > a.is-current {
  color: var(--white);
  font-weight: 600;
  border-bottom-color: var(--clay);
}

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, .35);
  border-radius: var(--radius-s);
  background-color: transparent;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--white);
  transition: transform .2s ease, opacity .2s ease;
}

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

.inner-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter) 72px;
}

.home-main {
  width: 100%;
}

/* 内页统一骨架：面包屑 / 标题区 */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 22px 0 6px;
  font-size: 14px;
  line-height: 1.6;
  color: #5C6660;
}

.breadcrumb a {
  color: #4A5A52;
  border-bottom: 1px solid transparent;
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--clay);
  border-bottom-color: var(--clay);
}

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

.breadcrumb-current {
  color: var(--green-deep);
  font-weight: 600;
}

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

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: var(--blue-mist);
}

.breadcrumb-item.is-current {
  color: var(--green-deep);
  font-weight: 600;
}

.page-header {
  padding: 8px 0 0;
}

.page-title {
  font-family: var(--font-serif);
  font-size: 42px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--green-deep);
  margin: 0;
  max-width: 46ch;
}

/* 标题区下附带的说明块（与 .page-header 并列） */
.page-title.page-title,
section.page-title {
  padding-bottom: 30px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 40px;
}

section.page-title .page-label,
section.page-title .page-kicker,
section.page-title .page-eyebrow {
  display: inline-block;
  margin: 0 0 12px;
  padding: 3px 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--green-deep);
  background-color: var(--sand);
  border-radius: var(--radius-s);
}

section.page-title .page-lead,
section.page-title .page-summary {
  max-width: 68ch;
  font-size: 18px;
  line-height: 1.8;
  color: #35423C;
  margin: 0 0 12px;
}

section.page-title .page-duty,
section.page-title .page-role {
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.8;
  color: #5C6660;
  margin: 0;
}

.page-head {
  padding-bottom: 30px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 40px;
}

.page-title-block {
  max-width: 68ch;
}

.page-title-block .page-eyebrow {
  display: inline-block;
  margin: 0 0 12px;
  padding: 3px 10px;
  font-size: 13px;
  color: var(--green-deep);
  background-color: var(--sand);
  border-radius: var(--radius-s);
}

.page-title-block .page-lead {
  font-size: 18px;
  line-height: 1.8;
  color: #35423C;
  margin: 0 0 12px;
}

.page-title-block .page-duty {
  font-size: 15px;
  line-height: 1.8;
  color: #5C6660;
  margin: 0;
}

/* 通用双列布局：主内容在前，aside 在后 */
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  align-items: start;
}

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

.layout-aside {
  min-width: 0;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 26px 24px;
}

.layout-shell {
  margin-top: 48px;
}

/* 左侧栏布局：aside 在 DOM 中位于 main 之前 */
.sidebar-left .page-layout,
.page-layout.sidebar-left,
body.sidebar-left .page-layout {
  grid-template-columns: 300px minmax(0, 1fr);
}

/* --------------------------------------------------------------------------
   components · 通用块
   -------------------------------------------------------------------------- */

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

.section-head h2,
.section-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--green-deep);
  margin: 0 0 12px;
}

.section-intro,
.section-desc {
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.8;
  color: #4A5A52;
  margin: 0;
}

.section-more {
  margin: 26px 0 0;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--green-deep);
  border-bottom: 1px solid var(--blue-mist);
  padding-bottom: 2px;
  min-height: 32px;
}

.text-link::after {
  content: "→";
  font-size: 14px;
  color: var(--clay);
}

.text-link:hover,
.text-link:focus-visible {
  color: var(--clay);
  border-bottom-color: var(--clay);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  border-radius: var(--radius-s);
  border: 1px solid transparent;
  text-align: center;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease;
}

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

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: #162E26;
  color: var(--white);
  border-color: #162E26;
}

.btn-secondary {
  background-color: transparent;
  color: var(--green-deep);
  border-color: var(--green-moss);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  background-color: var(--green-moss);
  color: var(--white);
  border-color: var(--green-moss);
}

/* 图片容器 */
.content-media,
.content-figure,
.hero-media,
.scene-media,
.topic-figure,
.about-figure,
.sitemap-figure,
.aside-figure {
  overflow: hidden;
  border-radius: var(--radius-m);
  background-color: var(--sand);
}

.content-media img,
.content-figure img,
.hero-media img,
.scene-media img,
.topic-figure img,
.about-figure img,
.sitemap-figure img,
.aside-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.content-media figcaption,
.content-figure figcaption,
.hero-media figcaption,
.scene-media figcaption,
.topic-figure figcaption,
.about-figure figcaption,
.sitemap-figure figcaption,
.aside-figure figcaption {
  padding: 10px 14px 12px;
  font-size: 14px;
  line-height: 1.7;
  color: #5C6660;
  background-color: var(--white);
}

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

.data-table,
.check-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  line-height: 1.75;
  background-color: var(--white);
}

.data-table th,
.data-table td,
.check-table th,
.check-table td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line-soft);
}

.data-table thead th,
.check-table thead th {
  background-color: var(--sand);
  color: var(--green-deep);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 15px;
  white-space: nowrap;
}

.data-table tbody th,
.check-table tbody th {
  color: var(--green-deep);
  font-weight: 600;
  background-color: #FBFAF6;
  white-space: nowrap;
}

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

.check-table {
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
  margin-top: 24px;
}

.table-caption {
  caption-side: top;
  padding: 0 0 10px;
  font-size: 14px;
  text-align: left;
  color: #5C6660;
}

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

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 52px;
  padding: 14px 18px;
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--green-deep);
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "展开";
  flex-shrink: 0;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  color: var(--clay);
  border: 1px solid var(--clay);
  border-radius: var(--radius-s);
  padding: 2px 10px;
  line-height: 1.6;
}

.faq-item[open] > .faq-question {
  background-color: #FBFAF6;
  border-bottom: 1px solid var(--line-soft);
}

.faq-item[open] > .faq-question::after {
  content: "收起";
  background-color: var(--clay);
  color: var(--white);
}

.faq-question:hover,
.faq-question:focus-visible {
  color: var(--clay);
}

.faq-answer {
  padding: 16px 18px 18px;
  font-size: 16px;
  line-height: 1.85;
  color: #35423C;
}

.faq-answer p {
  margin: 0 0 12px;
}

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

/* 相关链接（首页底部条） */
.related-links {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter) 64px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
}

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: #5C6660;
}

.related-links-item {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 4px 14px;
  font-size: 14px;
  color: var(--green-deep);
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
}

.related-links-item:hover,
.related-links-item:focus-visible {
  border-color: var(--clay);
  color: var(--clay);
}

/* 内页相关链接列表 */
.related-links .section-head {
  margin-bottom: 20px;
}

.related-links .section-head h2 {
  margin-bottom: 8px;
}

.related-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.related-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  min-height: 44px;
}

.related-item:hover,
.related-item:focus-within {
  border-color: var(--green-moss);
  background-color: #FBFAF6;
}

.related-item a {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
  color: var(--green-deep);
}

.related-item a:hover,
.related-item a:focus-visible {
  color: var(--clay);
}

.related-desc {
  font-size: 14px;
  line-height: 1.7;
  color: #5C6660;
}

/* 页脚 */
.site-footer {
  flex-shrink: 0;
  background-color: var(--green-deep);
  color: #D3DED7;
  border-top: 3px solid var(--clay);
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px var(--gutter) 36px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)) minmax(0, 1.4fr);
  gap: 32px 40px;
}

.footer-title {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, .16);
}

.footer-list li {
  margin-bottom: 4px;
}

.footer-list a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  font-size: 14px;
  color: #C4D2CA;
}

.footer-list a:hover,
.footer-list a:focus-visible {
  color: var(--white);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-brand {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
  margin: 0 0 8px;
}

.footer-text {
  font-size: 14px;
  line-height: 1.8;
  color: #C4D2CA;
  margin: 0 0 12px;
}

.footer-copy {
  font-size: 13px;
  line-height: 1.7;
  color: #9FB3A8;
  margin: 0;
}

/* --------------------------------------------------------------------------
   pages · 首页
   -------------------------------------------------------------------------- */

/* 首屏 */
.hero {
  background-color: var(--sand);
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 56px var(--gutter) 60px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
}

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

.hero-eyebrow {
  display: inline-block;
  margin: 0 0 16px;
  padding: 4px 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--green-deep);
  background-color: var(--white);
  border-left: 3px solid var(--clay);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
}

.hero-text h1 {
  font-size: 42px;
  line-height: 1.3;
  margin: 0 0 18px;
  max-width: 20ch;
}

.hero-lead {
  max-width: 34em;
  font-size: 17px;
  line-height: 1.85;
  color: #35423C;
  margin: 0 0 26px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 22px;
}

.hero-scope {
  max-width: 36em;
  font-size: 14px;
  line-height: 1.8;
  color: #5C6660;
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid var(--blue-mist);
}

.hero-media {
  border: 1px solid var(--line);
  box-shadow: 0 8px 24px rgba(31, 61, 51, .1);
}

.hero-media img {
  aspect-ratio: 4 / 3;
  height: auto;
}

/* 场景流 */
.scene-stream,
.topic-index,
.confirmation-nodes,
.delivery-summary,
.preparation-preview,
.faq-preview {
  max-width: var(--container);
  margin: 0 auto;
  padding: 60px var(--gutter) 0;
}

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

.scene-item {
  display: flex;
  flex-direction: column;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
  padding-bottom: 20px;
}

.scene-media {
  border-radius: 0;
  border-bottom: 1px solid var(--line-soft);
}

.scene-media img {
  aspect-ratio: 16 / 10;
  height: auto;
}

.scene-name {
  font-size: 19px;
  margin: 18px 20px 8px;
}

.scene-desc {
  font-size: 15px;
  line-height: 1.8;
  color: #4A5A52;
  margin: 0 20px 14px;
}

.scene-link {
  margin: auto 20px 0;
  align-self: flex-start;
  font-size: 14px;
  font-weight: 600;
  color: var(--green-deep);
  border-bottom: 1px solid var(--blue-mist);
  padding-bottom: 2px;
  min-height: 32px;
  display: inline-flex;
  align-items: center;
}

.scene-link:hover,
.scene-link:focus-visible {
  color: var(--clay);
  border-bottom-color: var(--clay);
}

/* 主题索引条 */
.topic-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.topic-item {
  display: flex;
  flex-direction: column;
  padding: 24px 22px;
  border-right: 1px solid var(--line-soft);
  border-top: 3px solid var(--blue-mist);
}

.topic-item:last-child {
  border-right: 0;
}

.topic-item:hover {
  border-top-color: var(--clay);
  background-color: #FBFAF6;
}

.topic-name {
  font-size: 18px;
  margin: 0 0 8px;
}

.topic-desc {
  font-size: 14px;
  line-height: 1.8;
  color: #5C6660;
  margin: 0 0 14px;
}

.topic-link {
  margin-top: auto;
  align-self: flex-start;
  font-size: 14px;
  font-weight: 600;
  color: var(--green-deep);
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  border-bottom: 1px solid var(--blue-mist);
}

.topic-link:hover,
.topic-link:focus-visible {
  color: var(--clay);
  border-bottom-color: var(--clay);
}

/* 确认节点轨道（首页） */
.confirmation-nodes .node-track {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
  counter-reset: node;
}

.confirmation-nodes .node-item {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 22px 18px 20px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-top: 3px solid var(--blue-mist);
  border-radius: var(--radius-m);
}

.confirmation-nodes .node-item:hover {
  border-top-color: var(--clay);
}

.confirmation-nodes .node-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  margin-bottom: 12px;
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
  background-color: var(--clay);
  border-radius: 50%;
}

.confirmation-nodes .node-name {
  font-size: 17px;
  margin: 0 0 8px;
}

.confirmation-nodes .node-party {
  font-size: 14px;
  line-height: 1.7;
  color: #35423C;
  margin: 0 0 8px;
}

.confirmation-nodes .node-pause {
  font-size: 13px;
  line-height: 1.7;
  color: #6B5A4B;
  margin: 0;
  padding-top: 8px;
  border-top: 1px dashed var(--line);
}

/* 交付摘要 */
.delivery-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 24px;
  align-items: stretch;
}

.delivery-checks,
.delivery-limits {
  padding: 28px 26px;
  border-radius: var(--radius-m);
  border: 1px solid var(--line);
}

.delivery-checks {
  background-color: var(--white);
}

.delivery-limits {
  background-color: #F1EDE2;
  border-left: 4px solid var(--clay);
  display: flex;
  flex-direction: column;
}

.column-title {
  font-size: 19px;
  margin: 0 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
}

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

.check-item {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.8;
  color: #35423C;
}

.check-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 12px;
  height: 12px;
  background-color: var(--green-moss);
  border-radius: 2px;
}

.limits-text {
  font-size: 15px;
  line-height: 1.85;
  color: #4A3C31;
  margin: 0 0 20px;
}

.delivery-limits .btn {
  margin-top: auto;
  align-self: flex-start;
}

/* 需求准备预览 */
.prep-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.prep-item {
  padding: 24px 22px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-left: 3px solid var(--green-moss);
  border-radius: var(--radius-m);
  display: flex;
  flex-direction: column;
}

.prep-item:hover {
  border-left-color: var(--clay);
}

.prep-name {
  font-size: 18px;
  margin: 0 0 10px;
}

.prep-why {
  font-size: 15px;
  line-height: 1.8;
  color: #4A5A52;
  margin: 0 0 14px;
}

.prep-link {
  margin-top: auto;
  align-self: flex-start;
  font-size: 14px;
  font-weight: 600;
  color: var(--green-deep);
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  border-bottom: 1px solid var(--blue-mist);
}

.prep-link:hover,
.prep-link:focus-visible {
  color: var(--clay);
  border-bottom-color: var(--clay);
}

/* FAQ 预览 */
.faq-preview .faq-list {
  max-width: 900px;
}

/* 站点地图入口带 */
.sitemap-cta {
  max-width: var(--container);
  margin: 60px auto 0;
  padding: 0 var(--gutter);
}

.sitemap-cta-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px 32px;
  padding: 32px 34px;
  background-color: var(--green-deep);
  border-radius: var(--radius-m);
  border-left: 6px solid var(--clay);
}

.sitemap-cta-inner h2 {
  color: var(--white);
  font-size: 24px;
  margin: 0 0 8px;
}

.sitemap-cta-text {
  flex: 1 1 420px;
  min-width: 240px;
  font-size: 15px;
  line-height: 1.8;
  color: #D3DED7;
  margin: 0;
}

.sitemap-cta-inner .btn-primary {
  background-color: var(--clay);
  border-color: var(--clay);
  color: var(--white);
  flex-shrink: 0;
}

.sitemap-cta-inner .btn-primary:hover,
.sitemap-cta-inner .btn-primary:focus-visible {
  background-color: #A85C39;
  border-color: #A85C39;
}

/* --------------------------------------------------------------------------
   pages · 业务索引
   -------------------------------------------------------------------------- */

.index-notice {
  padding: 18px 22px;
  background-color: var(--sand);
  border-left: 4px solid var(--green-moss);
  border-radius: 0 var(--radius-m) var(--radius-m) 0;
  margin-bottom: 28px;
}

.notice-heading {
  font-size: 17px;
  margin: 0 0 6px;
}

.notice-text {
  font-size: 15px;
  line-height: 1.8;
  color: #35423C;
  margin: 0;
}

.topic-anchors {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 44px;
}

.topic-anchor {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-height: 64px;
  padding: 12px 16px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  border-bottom: 3px solid var(--blue-mist);
}

.topic-anchor:hover,
.topic-anchor:focus-visible {
  border-bottom-color: var(--clay);
  background-color: #FBFAF6;
}

.topic-anchor-name {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--green-deep);
}

.topic-anchor-count {
  font-size: 13px;
  color: #5C6660;
}

.topic-group {
  margin-bottom: 48px;
  scroll-margin-top: 24px;
}

.topic-group:last-child {
  margin-bottom: 0;
}

.topic-group-head {
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.topic-group-index {
  display: inline-block;
  margin-bottom: 6px;
  font-family: var(--font-serif);
  font-size: 13px;
  font-weight: 700;
  color: var(--clay);
}

.topic-group-head h2 {
  font-size: 24px;
  margin: 0 0 8px;
}

.topic-group-desc {
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: #4A5A52;
  margin: 0;
}

.topic-figure {
  margin-bottom: 22px;
  border: 1px solid var(--line);
}

.topic-figure img {
  aspect-ratio: 16 / 7;
  height: auto;
}

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

.entry-item {
  padding: 20px 22px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
}

.entry-item:hover {
  border-color: var(--green-moss);
}

.entry-name {
  font-size: 18px;
  margin: 0 0 8px;
}

.entry-scene {
  font-size: 15px;
  line-height: 1.8;
  color: #35423C;
  margin: 0 0 6px;
}

.entry-tip {
  font-size: 14px;
  line-height: 1.75;
  color: #5C6660;
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--blue-mist);
}

.aside-heading {
  font-size: 20px;
  margin: 0 0 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.aside-block {
  margin-bottom: 22px;
}

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

.aside-block h3 {
  font-size: 16px;
  margin: 0 0 8px;
}

.aside-block p {
  font-size: 14px;
  line-height: 1.8;
  color: #4A5A52;
  margin: 0;
}

/* --------------------------------------------------------------------------
   pages · 协作节点
   -------------------------------------------------------------------------- */

.page-collaboration .page-title {
  margin-bottom: 0;
}

.content-media-inline {
  margin: 24px 0 0;
  border: 1px solid var(--line);
  max-width: 720px;
}

.content-media-inline img {
  aspect-ratio: 16 / 8;
  height: auto;
}

.node-overview,
.node-list,
.participant-table,
.pause-notes {
  margin-bottom: 56px;
}

.node-overview .node-track {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.node-overview .node-track-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 16px 18px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-top: 3px solid var(--clay);
  border-radius: var(--radius-m);
}

.node-overview .node-index {
  font-family: var(--font-serif);
  font-size: 13px;
  font-weight: 700;
  color: var(--clay);
}

.node-overview .node-name {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--green-deep);
}

.node-overview .node-goal {
  font-size: 13px;
  line-height: 1.7;
  color: #5C6660;
}

.node-list .node-detail {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 28px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}

.node-list .node-detail:last-child {
  border-bottom: 1px solid var(--line);
}

.node-detail-head {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-start;
}

.node-detail-head .node-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
  background-color: var(--clay);
  border-radius: 50%;
}

.node-detail-title {
  font-size: 22px;
  margin: 0;
}

.node-detail-body {
  min-width: 0;
}

.node-scene {
  font-size: 16px;
  line-height: 1.85;
  color: #35423C;
  margin: 0 0 16px;
}

.node-facts {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 0;
  margin: 0;
  border-top: 1px solid var(--line-soft);
}

.node-facts dt {
  padding: 12px 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--green-deep);
  border-bottom: 1px solid var(--line-soft);
}

.node-facts dd {
  margin: 0;
  padding: 12px 0;
  font-size: 15px;
  line-height: 1.8;
  color: #4A5A52;
  border-bottom: 1px solid var(--line-soft);
}

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

.pause-item {
  padding: 22px 22px 24px;
  background-color: #F1EDE2;
  border-left: 4px solid var(--clay);
  border-radius: 0 var(--radius-m) var(--radius-m) 0;
}

.pause-title {
  font-size: 17px;
  margin: 0 0 8px;
}

.pause-text {
  font-size: 15px;
  line-height: 1.8;
  color: #4A3C31;
  margin: 0;
}

/* --------------------------------------------------------------------------
   pages · 交付标准
   -------------------------------------------------------------------------- */

.checklist,
.tolerance-notes,
.record-method {
  margin-bottom: 48px;
}

.content-figure {
  margin: 0 0 8px;
  border: 1px solid var(--line);
}

.content-figure img {
  aspect-ratio: 16 / 7;
  height: auto;
}

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

.tolerance-notes .section-head {
  grid-column: 1 / -1;
  margin-bottom: 4px;
}

.tolerance-item {
  padding: 22px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-top: 3px solid var(--blue-mist);
  border-radius: var(--radius-m);
}

.tolerance-name {
  font-size: 17px;
  margin: 0 0 8px;
}

.tolerance-desc {
  font-size: 15px;
  line-height: 1.8;
  color: #35423C;
  margin: 0 0 10px;
}

.tolerance-meta {
  font-size: 13px;
  line-height: 1.7;
  color: #5C6660;
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
}

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

.record-method .record-item {
  padding: 18px 20px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
}

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

.record-text {
  font-size: 15px;
  line-height: 1.8;
  color: #4A5A52;
  margin: 0;
}

.layout-aside .aside-title {
  font-size: 20px;
  margin: 0 0 10px;
}

.aside-intro {
  font-size: 14px;
  line-height: 1.8;
  color: #5C6660;
  margin: 0 0 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.limit-block {
  padding: 14px 0;
  border-bottom: 1px dashed var(--line);
}

.limit-name {
  font-size: 15px;
  margin: 0 0 6px;
  color: var(--green-deep);
}

.limit-text {
  font-size: 14px;
  line-height: 1.8;
  color: #4A5A52;
  margin: 0;
}

.aside-link {
  margin: 18px 0 0;
}

.aside-link a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  font-size: 14px;
  font-weight: 600;
  color: var(--clay);
  border-bottom: 1px solid var(--clay);
}

.aside-link a:hover,
.aside-link a:focus-visible {
  color: var(--green-deep);
  border-bottom-color: var(--green-deep);
}

/* --------------------------------------------------------------------------
   pages · 需求准备
   -------------------------------------------------------------------------- */

.section {
  margin-bottom: 56px;
}

.section-overview .checklist-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.checklist-item {
  position: relative;
  padding: 22px 22px 20px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  border-top: 3px solid var(--green-moss);
}

.checklist-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin-bottom: 10px;
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 700;
  color: var(--white);
  background-color: var(--green-moss);
  border-radius: 50%;
}

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

.checklist-use {
  font-size: 14px;
  line-height: 1.8;
  color: #5C6660;
  margin: 0;
}

.detail-group {
  padding: 26px 26px 22px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  margin-bottom: 20px;
  scroll-margin-top: 24px;
}

.detail-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
}

.detail-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 700;
  color: var(--white);
  background-color: var(--clay);
  border-radius: 50%;
}

.detail-title {
  font-size: 20px;
  margin: 0;
}

.detail-list {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 0;
  margin: 0;
}

.detail-term {
  padding: 12px 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--green-deep);
  border-bottom: 1px solid var(--line-soft);
}

.detail-desc {
  margin: 0;
  padding: 12px 0;
  font-size: 15px;
  line-height: 1.85;
  color: #4A5A52;
  border-bottom: 1px solid var(--line-soft);
}

.detail-desc a {
  color: var(--clay);
  border-bottom: 1px solid var(--clay);
}

.detail-desc a:hover,
.detail-desc a:focus-visible {
  color: var(--green-deep);
  border-bottom-color: var(--green-deep);
}

.missing-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.missing-item {
  padding: 20px 22px;
  background-color: #F1EDE2;
  border-left: 4px solid var(--clay);
  border-radius: 0 var(--radius-m) var(--radius-m) 0;
}

.missing-name {
  font-size: 17px;
  margin: 0 0 8px;
}

.missing-desc {
  font-size: 15px;
  line-height: 1.8;
  color: #4A3C31;
  margin: 0;
}

.missing-next {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  margin: 0;
}

.missing-next a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 6px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--green-deep);
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
}

.missing-next a:hover,
.missing-next a:focus-visible {
  border-color: var(--clay);
  color: var(--clay);
}

.print-block {
  padding: 26px 28px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  border-left: 4px solid var(--blue-mist);
}

.print-text {
  font-size: 15px;
  line-height: 1.85;
  color: #35423C;
  margin: 0 0 14px;
}

.print-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
}

.print-item {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.8;
  color: #4A5A52;
}

.print-item::before {
  content: "·";
  position: absolute;
  left: 6px;
  top: 0;
  color: var(--clay);
  font-weight: 700;
}

.print-tip {
  font-size: 14px;
  line-height: 1.75;
  color: #5C6660;
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

/* --------------------------------------------------------------------------
   pages · 常见问题
   -------------------------------------------------------------------------- */

.faq-toc {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 24px 22px;
  position: sticky;
  top: 20px;
}

.faq-toc .aside-title {
  font-size: 19px;
  margin: 0 0 8px;
}

.aside-note {
  font-size: 14px;
  line-height: 1.75;
  color: #5C6660;
  margin: 0 0 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.toc-item a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 44px;
  padding: 8px 12px;
  font-size: 15px;
  color: var(--green-deep);
  border-radius: var(--radius-s);
  border: 1px solid transparent;
}

.toc-item a:hover,
.toc-item a:focus-visible {
  background-color: #FBFAF6;
  border-color: var(--line);
  color: var(--clay);
}

.toc-name {
  font-weight: 600;
}

.toc-count {
  flex-shrink: 0;
  font-size: 12px;
  color: #5C6660;
  background-color: var(--sand);
  border-radius: 10px;
  padding: 1px 8px;
}

.faq-toc .aside-figure {
  margin-top: 18px;
  border: 1px solid var(--line);
}

.faq-toc .aside-figure img {
  aspect-ratio: 4 / 3;
  height: auto;
}

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

.faq-group {
  margin-bottom: 40px;
  scroll-margin-top: 24px;
}

.faq-group h2 {
  font-size: 24px;
  margin: 0 0 8px;
}

.group-intro {
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: #4A5A52;
  margin: 0 0 18px;
}

.boundary-note {
  padding: 26px 26px 22px;
  background-color: #F1EDE2;
  border-radius: var(--radius-m);
  border-left: 4px solid var(--clay);
  margin-bottom: 40px;
}

.boundary-note h2 {
  font-size: 22px;
  margin: 0 0 8px;
}

.boundary-intro {
  font-size: 15px;
  line-height: 1.8;
  color: #4A3C31;
  margin: 0 0 18px;
}

.boundary-item {
  padding: 16px 0;
  border-top: 1px solid #DCD3C1;
}

.boundary-item h3 {
  font-size: 17px;
  margin: 0 0 6px;
}

.boundary-item p {
  font-size: 15px;
  line-height: 1.8;
  color: #4A3C31;
  margin: 0 0 6px;
}

.boundary-link {
  margin: 0;
}

.boundary-link a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 14px;
  font-weight: 600;
  color: var(--clay);
  border-bottom: 1px solid var(--clay);
}

.boundary-link a:hover,
.boundary-link a:focus-visible {
  color: var(--green-deep);
  border-bottom-color: var(--green-deep);
}

.continue-links h2 {
  font-size: 22px;
  margin: 0 0 8px;
}

.continue-intro {
  font-size: 15px;
  line-height: 1.8;
  color: #4A5A52;
  margin: 0 0 18px;
}

.continue-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.continue-item {
  padding: 20px 20px 22px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  border-top: 3px solid var(--blue-mist);
}

.continue-item:hover {
  border-top-color: var(--clay);
}

.continue-item h3 {
  font-size: 17px;
  margin: 0 0 8px;
}

.continue-item h3 a {
  color: var(--green-deep);
}

.continue-item h3 a:hover,
.continue-item h3 a:focus-visible {
  color: var(--clay);
}

.continue-item p {
  font-size: 14px;
  line-height: 1.8;
  color: #5C6660;
  margin: 0;
}

/* --------------------------------------------------------------------------
   pages · 关于我们
   -------------------------------------------------------------------------- */

.about-roles,
.about-principles,
.about-records,
.about-boundary,
.about-next {
  margin-bottom: 56px;
}

.role-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.role-card {
  padding: 22px 20px 24px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  border-top: 3px solid var(--green-moss);
}

.role-name {
  font-size: 18px;
  margin: 0 0 10px;
}

.role-duty {
  font-size: 15px;
  line-height: 1.8;
  color: #35423C;
  margin: 0 0 10px;
}

.role-output {
  font-size: 13px;
  line-height: 1.7;
  color: #5C6660;
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
}

.about-figure {
  margin: 0 0 56px;
  border: 1px solid var(--line);
}

.about-figure img {
  aspect-ratio: 21 / 8;
  height: auto;
}

.principle-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.principle-item {
  padding: 22px 24px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-left: 4px solid var(--blue-mist);
  border-radius: 0 var(--radius-m) var(--radius-m) 0;
}

.principle-name {
  font-size: 18px;
  margin: 0 0 8px;
}

.principle-text {
  font-size: 15px;
  line-height: 1.85;
  color: #4A5A52;
  margin: 0;
}

.about-records .record-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.about-records .record-item {
  padding: 22px 22px 24px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
}

.record-when {
  font-size: 14px;
  line-height: 1.75;
  color: var(--clay);
  margin: 0 0 8px;
  font-weight: 600;
}

.record-use {
  font-size: 15px;
  line-height: 1.8;
  color: #4A5A52;
  margin: 0;
}

.boundary-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.about-boundary .boundary-item {
  padding: 22px 24px;
  background-color: #F1EDE2;
  border: 1px solid #DCD3C1;
  border-left: 4px solid var(--clay);
  border-radius: 0 var(--radius-m) var(--radius-m) 0;
}

.boundary-name {
  font-size: 18px;
  margin: 0 0 8px;
}

.boundary-text {
  font-size: 15px;
  line-height: 1.85;
  color: #4A3C31;
  margin: 0 0 10px;
}

.boundary-ref {
  margin: 0;
}

.boundary-ref a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 14px;
  font-weight: 600;
  color: var(--clay);
  border-bottom: 1px solid var(--clay);
}

.boundary-ref a:hover,
.boundary-ref a:focus-visible {
  color: var(--green-deep);
  border-bottom-color: var(--green-deep);
}

.next-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.next-link-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 20px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
}

.next-link-item:hover {
  border-color: var(--green-moss);
}

.next-link-item a {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
  color: var(--green-deep);
  min-height: 32px;
  display: inline-flex;
  align-items: center;
}

.next-link-item a:hover,
.next-link-item a:focus-visible {
  color: var(--clay);
}

.next-desc {
  font-size: 14px;
  line-height: 1.7;
  color: #5C6660;
}

/* --------------------------------------------------------------------------
   pages · 站点地图
   -------------------------------------------------------------------------- */

.sitemap-groups {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-bottom: 48px;
}

.sitemap-group {
  padding: 28px 28px 24px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  scroll-margin-top: 24px;
}

.sitemap-group-head {
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.sitemap-group-title {
  font-size: 22px;
  margin: 0 0 6px;
}

.sitemap-group-desc {
  font-size: 15px;
  line-height: 1.8;
  color: #4A5A52;
  margin: 0;
}

.sitemap-figure {
  margin-bottom: 18px;
  border: 1px solid var(--line);
}

.sitemap-figure img {
  aspect-ratio: 16 / 6;
  height: auto;
}

.sitemap-link-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 24px;
}

.sitemap-link-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line-soft);
}

.sitemap-link-item a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--green-deep);
}

.sitemap-link-item a:hover,
.sitemap-link-item a:focus-visible {
  color: var(--clay);
}

.sitemap-link-duty {
  font-size: 14px;
  line-height: 1.7;
  color: #5C6660;
}

.sitemap-extra {
  padding: 26px 28px;
  background-color: #F1EDE2;
  border-left: 4px solid var(--blue-mist);
  border-radius: 0 var(--radius-m) var(--radius-m) 0;
}

.sitemap-extra-title {
  font-size: 20px;
  margin: 0 0 8px;
}

.sitemap-extra-text {
  font-size: 15px;
  line-height: 1.8;
  color: #4A3C31;
  margin: 0 0 16px;
}

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

.sitemap-extra-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
}

.sitemap-extra-item a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 15px;
  font-weight: 600;
  color: var(--green-deep);
  border-bottom: 1px solid var(--blue-mist);
}

.sitemap-extra-item a:hover,
.sitemap-extra-item a:focus-visible {
  color: var(--clay);
  border-bottom-color: var(--clay);
}

.sitemap-extra-note {
  font-size: 14px;
  color: #5C6660;
}

/* --------------------------------------------------------------------------
   pages · 404
   -------------------------------------------------------------------------- */

.site-error .error-main {
  flex: 1 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px var(--gutter);
}

.error-panel {
  max-width: 640px;
  width: 100%;
  text-align: center;
  padding: 44px 36px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-top: 4px solid var(--clay);
  border-radius: var(--radius-m);
}

.error-code {
  font-family: var(--font-serif);
  font-size: 56px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--clay);
  margin: 0 0 12px;
}

.error-title {
  font-size: 28px;
  margin: 0 0 12px;
}

.error-text {
  font-size: 16px;
  line-height: 1.8;
  color: #4A5A52;
  margin: 0 0 24px;
}

.error-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 24px;
}

.error-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 6px 16px;
  font-size: 14px;
  color: var(--green-deep);
  background-color: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
}

.error-links a:hover,
.error-links a:focus-visible {
  border-color: var(--clay);
  color: var(--clay);
}

.error-home-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 26px;
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  background-color: var(--green-deep);
  border-radius: var(--radius-s);
}

.error-home-link:hover,
.error-home-link:focus-visible {
  background-color: var(--clay);
  color: var(--white);
}

/* --------------------------------------------------------------------------
   responsive
   -------------------------------------------------------------------------- */

@media (max-width: 1024px) {
  :root {
    --gutter: 24px;
  }

  h1,
  .page-title,
  .hero-text h1 {
    font-size: 36px;
  }

  h2,
  .section-head h2,
  .section-title {
    font-size: 26px;
  }

  .header-inner {
    gap: 20px;
  }

  .nav-item > a {
    padding: 0 9px;
    font-size: 14px;
  }

  .hero-inner {
    gap: 36px;
    padding-top: 44px;
    padding-bottom: 48px;
  }

  .page-layout {
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 32px;
  }

  .sidebar-left .page-layout,
  .page-layout.sidebar-left,
  body.sidebar-left .page-layout {
    grid-template-columns: 260px minmax(0, 1fr);
  }

  .confirmation-nodes .node-track,
  .node-overview .node-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

  .node-list .node-detail {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 22px;
  }
}

@media (max-width: 760px) {
  :root {
    --gutter: 20px;
  }

  body {
    font-size: 16px;
    line-height: 1.8;
  }

  h1,
  .page-title,
  .hero-text h1 {
    font-size: 30px;
    line-height: 1.35;
  }

  h2,
  .section-head h2,
  .section-title {
    font-size: 24px;
  }

  h3 {
    font-size: 18px;
  }

  .header-inner {
    flex-wrap: wrap;
    min-height: 64px;
    padding: 10px var(--gutter);
    gap: 10px;
  }

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

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

  .site-nav {
    flex-basis: 100%;
    margin-left: 0;
    width: 100%;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
    padding: 6px 0 4px;
    border-top: 1px solid rgba(255, 255, 255, .16);
  }

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

  .nav-item > a {
    display: flex;
    width: 100%;
    min-height: 44px;
    padding: 0 8px;
    font-size: 15px;
    border-bottom: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
  }

  .nav-item > a:hover,
  .nav-item > a:focus-visible,
  .nav-item.is-current > a,
  .nav-item > a.is-current {
    border-left-color: var(--clay);
    border-bottom: 0;
    background-color: rgba(255, 255, 255, .07);
  }

  .inner-main {
    padding-bottom: 56px;
  }

  .breadcrumb {
    padding: 16px 0 4px;
    font-size: 13px;
  }

  .page-header {
    padding-top: 4px;
  }

  section.page-title,
  .page-head {
    padding-bottom: 22px;
    margin-bottom: 28px;
  }

  section.page-title .page-lead,
  section.page-title .page-summary,
  .page-title-block .page-lead {
    font-size: 16px;
  }

  /* 内页布局在手机端统一为单列，主内容在前 */
  .page-layout,
  .sidebar-left .page-layout,
  .page-layout.sidebar-left,
  body.sidebar-left .page-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .layout-aside {
    padding: 22px 20px;
  }

  .faq-toc {
    position: static;
    padding: 20px 18px;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding: 32px var(--gutter) 40px;
  }

  .hero-text h1 {
    max-width: none;
  }

  .hero-actions .btn {
    flex: 1 1 160px;
  }

  .hero-media img {
    aspect-ratio: 16 / 10;
  }

  .scene-stream,
  .topic-index,
  .confirmation-nodes,
  .delivery-summary,
  .preparation-preview,
  .faq-preview {
    padding: 40px var(--gutter) 0;
  }

  .scene-grid,
  .prep-grid,
  .pause-grid,
  .continue-list,
  .missing-list,
  .about-records .record-list,
  .next-links,
  .tolerance-notes,
  .section-overview .checklist-grid {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .topic-item {
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .topic-item:last-child {
    border-bottom: 0;
  }

  .confirmation-nodes .node-track,
  .node-overview .node-track {
    grid-template-columns: minmax(0, 1fr);
  }

  .confirmation-nodes .node-item,
  .node-overview .node-track-item {
    padding: 18px 18px 16px;
  }

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

  .delivery-checks,
  .delivery-limits {
    padding: 22px 20px;
  }

  .sitemap-cta {
    padding: 0 var(--gutter);
    margin-top: 40px;
  }

  .sitemap-cta-inner {
    padding: 24px 22px;
  }

  .sitemap-cta-inner h2 {
    font-size: 21px;
  }

  .related-links {
    padding: 0 var(--gutter) 48px;
  }

  .topic-anchors {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-bottom: 32px;
  }

  .topic-group {
    margin-bottom: 36px;
  }

  .entry-item {
    padding: 18px 18px;
  }

  .node-list .node-detail {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
    padding: 22px 0;
  }

  .node-detail-head {
    flex-direction: row;
    align-items: center;
    gap: 10px;
  }

  .node-detail-title {
    font-size: 20px;
  }

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

  .node-facts dt,
  .detail-term {
    padding-bottom: 2px;
    border-bottom: 0;
  }

  .node-facts dd,
  .detail-desc {
    padding-top: 0;
    padding-bottom: 12px;
  }

  .node-overview,
  .node-list,
  .participant-table,
  .pause-notes,
  .checklist,
  .tolerance-notes,
  .record-method,
  .section,
  .about-roles,
  .about-principles,
  .about-records,
  .about-boundary,
  .about-next {
    margin-bottom: 40px;
  }

  .tolerance-notes .section-head {
    margin-bottom: 4px;
  }

  .detail-group {
    padding: 20px 18px 16px;
  }

  .print-block {
    padding: 20px 18px;
  }

  .role-grid,
  .principle-list,
  .boundary-list,
  .sitemap-link-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .sitemap-group {
    padding: 22px 18px 18px;
  }

  .sitemap-extra {
    padding: 22px 18px;
  }

  .about-figure {
    margin-bottom: 40px;
  }

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

  .data-table th,
  .data-table td,
  .check-table th,
  .check-table td {
    padding: 10px 12px;
    font-size: 14px;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
    padding: 36px var(--gutter) 28px;
  }

  .footer-list a {
    min-height: 40px;
  }

  .site-error .error-main {
    padding: 48px var(--gutter);
  }

  .error-panel {
    padding: 32px 20px;
  }

  .error-code {
    font-size: 44px;
  }

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

@media (max-width: 480px) {
  :root {
    --gutter: 16px;
  }

  h1,
  .page-title,
  .hero-text h1 {
    font-size: 26px;
  }

  h2,
  .section-head h2,
  .section-title {
    font-size: 21px;
  }

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

  .hero-actions .btn {
    width: 100%;
    flex: none;
  }

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

  .faq-question {
    font-size: 16px;
    padding: 12px 14px;
    gap: 10px;
  }

  .faq-answer {
    padding: 14px;
  }

  .scene-name {
    margin: 16px 16px 8px;
  }

  .scene-desc,
  .scene-link {
    margin-left: 16px;
    margin-right: 16px;
  }

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

  .sitemap-cta-inner .btn {
    width: 100%;
  }

  .related-links-item {
    flex: 1 1 auto;
    justify-content: center;
  }
}

/* 打印样式：隐藏导航与交互控件，保留清单正文 */
@media print {
  .site-header,
  .site-footer,
  .breadcrumb,
  .nav-toggle,
  .related-links,
  .hero-actions,
  .missing-next,
  .btn {
    display: none !important;
  }

  body {
    background-color: #FFFFFF;
    color: #000000;
    font-size: 12pt;
    line-height: 1.6;
  }

  .inner-main,
  .page-layout,
  .page-layout.sidebar-left {
    max-width: none;
    display: block;
    padding: 0;
  }

  .faq-item {
    border: 1px solid #999999;
  }

  .faq-item > .faq-answer {
    display: block;
  }

  a {
    color: #000000;
    text-decoration: none;
  }

  .detail-group,
  .print-block,
  .checklist-item {
    break-inside: avoid;
    border: 1px solid #999999;
  }
}