/* ==========================================================================
   天美传媒精品 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. base —— 变量、重置、排版、通用元素
   -------------------------------------------------------------------------- */

:root {
  --ink-blue: #17324a;
  --paper: #fbfaf7;
  --sand: #f0ece3;
  --ochre: #b4552d;
  --text-ink: #1f2529;
  --text-muted: #5d6a70;
  --line: #dcd6c9;
  --done-green: #2f6f5b;

  --radius: 4px;
  --btn-h: 44px;
  --container: 1200px;
  --body-col: 720px;
  --side-col: 300px;
  --col-gap: 48px;
  --header-h: 64px;
  --bottom-nav-h: 64px;

  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

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

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

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

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

a {
  color: var(--ink-blue);
  text-decoration: none;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--ochre);
  text-decoration: underline;
  text-decoration-thickness: 1px;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 1px solid var(--ochre);
  outline-offset: 2px;
  border-radius: 2px;
}

h1,
h2,
h3,
h4 {
  color: var(--ink-blue);
  font-weight: 600;
  line-height: 1.4;
  margin: 0 0 0.6em;
}

h1 {
  font-size: 34px;
  line-height: 1.35;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 19px;
}

p {
  margin: 0 0 1em;
}

ul,
ol {
  margin: 0 0 1em;
  padding-left: 1.35em;
}

li {
  margin-bottom: 0.35em;
}

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

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

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

figure {
  margin: 0 0 1.25em;
}

figcaption {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
}

abbr,
.term {
  text-decoration: underline dashed var(--ochre);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  cursor: help;
}

/* --------------------------------------------------------------------------
   2. layout —— 骨架：site-body / header / main / breadcrumb / page-header / footer
   -------------------------------------------------------------------------- */

.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--paper);
  color: var(--text-ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.85;
}

/* --- 页头与主导航 --- */

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

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

.brand-mark {
  flex: none;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink-blue);
  white-space: nowrap;
}

.brand-mark:hover {
  color: var(--ink-blue);
  text-decoration: none;
}

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

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav li {
  margin: 0;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  height: var(--header-h);
  padding: 0 12px;
  font-size: 15px;
  color: var(--text-ink);
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.nav-link:hover {
  color: var(--ink-blue);
  border-bottom-color: var(--ochre);
  text-decoration: none;
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  margin: 0 auto;
  background-color: var(--ink-blue);
}

.mobile-nav {
  border-top: 1px solid var(--line);
  background-color: var(--paper);
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav ul {
  margin: 0;
  padding: 8px 16px 16px;
  list-style: none;
}

.mobile-nav li {
  margin: 0;
}

.mobile-nav a {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 0 8px;
  font-size: 16px;
  color: var(--ink-blue);
  border-bottom: 1px solid var(--line);
}

.mobile-nav li:last-child a {
  border-bottom: 0;
}

/* --- 主容器 --- */

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

.inner-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px calc(var(--bottom-nav-h) + 48px + env(safe-area-inset-bottom));
}

.home-main {
  padding-bottom: calc(var(--bottom-nav-h) + 24px + env(safe-area-inset-bottom));
}

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

/* --- 面包屑 --- */

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 20px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-muted);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

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

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

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

/* --- 页面标题区 --- */

.page-header {
  padding: 24px 0 20px;
}

.page-title {
  margin: 0;
  font-size: 34px;
  line-height: 1.35;
  color: var(--ink-blue);
  font-weight: 600;
}

.page-title-block {
  padding: 0 0 8px;
}

.page-lead {
  max-width: var(--body-col);
  margin: 0 0 6px;
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-ink);
}

.page-meta {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* --- 两列布局：正文在前，侧栏在后 --- */

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, var(--body-col)) minmax(0, var(--side-col));
  gap: var(--col-gap);
  align-items: start;
  padding: 16px 0 40px;
}

.layout-shell {
  padding-top: 24px;
}

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

.side-column,
.sidebar,
.page-aside {
  min-width: 0;
  position: relative;
}

.side-column {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* --- 页脚 --- */

.site-footer {
  margin-top: 48px;
  background-color: var(--sand);
  border-top: 1px solid var(--line);
  padding-bottom: calc(var(--bottom-nav-h) + 24px + env(safe-area-inset-bottom));
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 40px 24px 24px;
}

.footer-groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.footer-group h2 {
  margin: 0 0 12px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink-blue);
}

.footer-group ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-group li {
  margin: 0 0 8px;
}

.footer-group a {
  font-size: 15px;
  color: var(--text-ink);
  line-height: 1.7;
}

.footer-group a:hover {
  color: var(--ochre);
}

.footer-brand {
  margin: 28px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--text-muted);
}

/* --- 底部固定快捷导航 --- */

.bottom-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 35;
  background-color: var(--paper);
  border-top: 1px solid var(--line);
  padding-bottom: env(safe-area-inset-bottom);
}

.bottom-nav ul {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  max-width: var(--container);
  margin: 0 auto;
  padding: 0;
  list-style: none;
}

.bottom-nav li {
  margin: 0;
}

.bottom-nav a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: var(--bottom-nav-h);
  font-size: 14px;
  color: var(--ink-blue);
}

.bottom-nav a:hover {
  color: var(--ochre);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   3. components —— 按钮、结论框、卡片、表格、折叠问答、清单、术语等
   -------------------------------------------------------------------------- */

/* --- 按钮 --- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--btn-h);
  padding: 0 22px;
  border-radius: var(--radius);
  border: 1px solid var(--ink-blue);
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background-color: var(--ink-blue);
  color: var(--paper);
}

.btn-primary:hover {
  background-color: #0f2438;
  border-color: #0f2438;
  color: var(--paper);
  text-decoration: none;
}

.btn-ghost {
  background-color: transparent;
  color: var(--ink-blue);
}

.btn-ghost:hover {
  background-color: var(--sand);
  color: var(--ink-blue);
  text-decoration: none;
}

/* --- 结论框 --- */

.conclusion-box {
  margin: 0 0 24px;
  padding: 16px 20px;
  background-color: var(--paper);
  border-left: 3px solid var(--ochre);
}

.conclusion-box h2,
.conclusion-box h3 {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ochre);
}

.conclusion-box p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
}

/* --- 侧栏卡片基础 --- */

.toc-card,
.glossary-card,
.cross-card,
.cross-links,
.advice-card,
.checklist-card,
.sidebar-card,
.side-block,
.aside-block {
  padding: 18px 20px;
  background-color: var(--sand);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.toc-card h2,
.glossary-card h2,
.cross-card h2,
.cross-links h2,
.advice-card h2,
.checklist-card h2,
.sidebar-card h2,
.side-block h2,
.aside-block h2,
.side-card-title,
.sidebar-heading,
.aside-title {
  margin: 0 0 10px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink-blue);
}

.toc-card ul,
.toc-list,
.cross-card ul,
.cross-links ul,
.cross-list,
.cross-link-list,
.advice-list,
.checklist-card ul,
.side-block ul,
.aside-toc,
.aside-links {
  margin: 0;
  padding: 0;
  list-style: none;
}

.toc-card li,
.toc-list li,
.cross-card li,
.cross-links li,
.cross-list li,
.cross-link-list li,
.advice-list li,
.checklist-card li,
.side-block li,
.aside-toc li,
.aside-links li {
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.7;
}

.toc-card li:last-child,
.toc-list li:last-child,
.cross-card li:last-child,
.cross-links li:last-child,
.cross-list li:last-child,
.cross-link-list li:last-child,
.advice-list li:last-child,
.checklist-card li:last-child,
.side-block li:last-child,
.aside-toc li:last-child,
.aside-links li:last-child {
  margin-bottom: 0;
}

.toc-card a,
.toc-list a,
.cross-card a,
.cross-links a,
.cross-list a,
.cross-link-list a,
.advice-list a,
.side-block a,
.aside-toc a,
.aside-links a {
  color: var(--ink-blue);
  text-decoration: underline;
  text-decoration-color: var(--line);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.toc-card a:hover,
.toc-list a:hover,
.cross-card a:hover,
.cross-links a:hover,
.cross-list a:hover,
.cross-link-list a:hover,
.advice-list a:hover,
.side-block a:hover,
.aside-toc a:hover,
.aside-links a:hover {
  color: var(--ochre);
  text-decoration-color: var(--ochre);
}

/* --- 术语表 --- */

.glossary-card dl {
  margin: 0;
}

.glossary-card dt {
  margin: 12px 0 2px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-blue);
}

.glossary-card dt:first-child {
  margin-top: 0;
}

.glossary-card dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
}

.glossary-card dt:target {
  background-color: #f7e6d9;
}

/* --- 折叠问答 --- */

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  font-size: 17px;
  font-weight: 500;
  color: var(--ink-blue);
  line-height: 1.6;
  cursor: pointer;
  list-style: none;
}

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

.faq-item summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--ochre);
  line-height: 1.2;
}

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

.faq-item summary:hover {
  color: var(--ochre);
}

.faq-panel,
.faq-answer {
  padding: 0 0 16px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-ink);
}

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

.faq-more {
  margin: 10px 0 0;
  font-size: 14px;
}

.faq-more a {
  color: var(--ochre);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

/* --- 表格 --- */

.table-wrap {
  overflow-x: auto;
  margin: 0 0 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.spec-table,
.doc-table {
  font-size: 15px;
  line-height: 1.7;
}

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

.spec-table th,
.spec-table td,
.doc-table th,
.doc-table td {
  padding: 12px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.spec-table thead th,
.doc-table thead th {
  background-color: var(--sand);
  color: var(--ink-blue);
  font-weight: 600;
  white-space: nowrap;
}

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

/* --- 清单类 --- */

.checklist,
.check-list {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.checklist li,
.check-list li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 12px;
  font-size: 16px;
  line-height: 1.8;
}

.checklist li::before,
.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--ochre);
}

.exclude-list {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.exclude-list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-ink);
}

.exclude-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--text-muted);
}

.link-list {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.link-list li {
  margin: 0 0 10px;
  font-size: 16px;
}

.link-list a {
  color: var(--ink-blue);
  text-decoration: underline;
  text-decoration-color: var(--line);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.link-list a:hover {
  color: var(--ochre);
  text-decoration-color: var(--ochre);
}

/* --- 说明段 --- */

.note,
.note-line,
.section-note,
.judge-note,
.scope-note,
.limit-note,
.stage-limit,
.matrix-note,
.flow-note {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-muted);
}

.note a,
.note-line a,
.section-note a,
.judge-note a,
.scope-note a,
.limit-note a,
.stage-limit a,
.matrix-note a,
.flow-note a {
  color: var(--ochre);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

/* --- 编号步骤列表（方案变更 / 通知路径 / 阅读顺序） --- */

.step-list,
.path-list,
.read-order {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  counter-reset: step-counter;
}

.step-list li,
.path-list li,
.read-order li {
  position: relative;
  padding: 0 0 16px 44px;
  margin: 0;
  border-left: 1px solid var(--line);
}

.step-list li:last-child,
.path-list li:last-child,
.read-order li:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.step-list li::before,
.path-list li::before,
.read-order li::before {
  counter-increment: step-counter;
  content: counter(step-counter, decimal-leading-zero);
  position: absolute;
  left: -18px;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--paper);
  border: 1px solid var(--ochre);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ochre);
}

.step-list h3,
.path-list h3,
.read-order h3 {
  margin: 4px 0 4px;
  font-size: 17px;
}

.step-list p,
.path-list p,
.read-order p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
}

/* --- 图片媒体块通用 --- */

.media-block img,
.media-figure img,
.section-figure img,
.content-figure img,
.faq-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

/* --- 反馈入口说明 --- */

.feedback-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.feedback-list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
  line-height: 1.8;
}

.feedback-list li:last-child {
  border-bottom: 0;
}

.feedback-list a {
  color: var(--ink-blue);
  font-weight: 500;
  text-decoration: underline;
  text-decoration-color: var(--ochre);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.feedback-list a:hover {
  color: var(--ochre);
}

.feedback-list span {
  display: block;
  margin-top: 2px;
  font-size: 14px;
  color: var(--text-muted);
}

/* --- 状态标记 --- */

.status-dot {
  display: inline-block;
  flex: none;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid var(--text-muted);
  background-color: transparent;
}

.status-dot.status-not-started {
  background-color: transparent;
  border-color: var(--text-muted);
}

.status-dot.status-in-progress {
  background-color: var(--ochre);
  border-color: var(--ochre);
}

.status-dot.status-pending {
  background-color: var(--paper);
  border-color: var(--ochre);
  box-shadow: inset 0 0 0 2px var(--ochre);
}

.status-dot.status-done {
  background-color: var(--done-green);
  border-color: var(--done-green);
}

/* --- 辅助隐藏类与跳转链接 --- */

.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;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 100;
  padding: 10px 16px;
  background-color: var(--ink-blue);
  color: var(--paper);
  border-radius: var(--radius);
  font-size: 14px;
}

.skip-link:focus {
  top: 12px;
  color: var(--paper);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   4. pages —— 各页专属模块
   -------------------------------------------------------------------------- */

/* ===== 首页 ===== */

.hero {
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: 48px;
  align-items: center;
  max-width: var(--container);
  margin: 0 auto;
  padding: 56px 24px 48px;
}

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

.hero-eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0;
  color: var(--ochre);
}

.hero-text h1 {
  margin: 0 0 18px;
  font-size: 34px;
  line-height: 1.35;
  color: var(--ink-blue);
}

.hero-lead {
  max-width: 560px;
  margin: 0 0 24px;
  font-size: 17px;
  line-height: 1.85;
  color: var(--text-ink);
}

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

.hero-media {
  min-width: 0;
  margin: 0;
}

.hero-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.hero-media figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* 首屏速览三列 */

.hero-quick {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px 40px;
}

.quick-col {
  min-width: 0;
  padding: 20px 24px 20px 0;
  border-top: 1px solid var(--line);
}

.quick-col + .quick-col {
  padding-left: 24px;
  border-left: 1px solid var(--line);
}

.quick-col h2 {
  margin: 0 0 10px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink-blue);
}

.quick-col ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.quick-col li {
  position: relative;
  padding-left: 14px;
  margin: 0 0 6px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-ink);
}

.quick-col li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--ochre);
}

/* 服务项目矩阵四列 */

.service-matrix {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px 24px 8px;
}

.section-head {
  max-width: var(--body-col);
  margin: 0 0 28px;
}

.section-head h2 {
  margin: 0 0 8px;
}

.section-head p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-muted);
}

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

.matrix-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 16px;
  background-color: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.matrix-media {
  margin: 0 0 14px;
}

.matrix-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius);
}

.matrix-card h3 {
  margin: 0 0 8px;
  font-size: 17px;
}

.matrix-scene {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-ink);
}

.matrix-deliverables {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
}

.matrix-deliverables li {
  position: relative;
  padding-left: 14px;
  margin: 0 0 4px;
}

.matrix-deliverables li::before {
  content: "·";
  position: absolute;
  left: 2px;
  color: var(--ochre);
  font-weight: 700;
}

.matrix-note {
  max-width: var(--body-col);
  margin-top: 20px;
}

/* 首页阶段顺序图 */

.stage-section {
  padding-top: 8px;
}

.stage-section h2 {
  margin: 0 0 18px;
}

.stage-track {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0;
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  counter-reset: stage-counter;
}

.stage-node {
  position: relative;
  min-width: 0;
  padding: 16px 8px 0 0;
  margin: 0;
  border-top: 2px solid var(--line);
}

.stage-node::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--paper);
  border: 2px solid var(--ochre);
}

.stage-code {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: -0.01em;
  color: var(--ochre);
}

.stage-name {
  display: block;
  margin-top: 2px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-blue);
}

/* 首页合作流程四步 */

.flow-preview {
  padding-top: 40px;
}

.flow-preview h2 {
  margin: 0 0 18px;
}

.flow-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin: 0 0 16px;
}

.flow-step {
  min-width: 0;
  padding: 16px;
  background-color: var(--sand);
  border-radius: var(--radius);
  border-top: 2px solid var(--ochre);
}

.flow-num {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: -0.01em;
  color: var(--ochre);
}

.flow-step h3 {
  margin: 0 0 8px;
  font-size: 17px;
}

.flow-owner,
.flow-output {
  margin: 0 0 4px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
}

.flow-output {
  margin-bottom: 0;
}

/* 首页常见问题速览 */

.faq-preview {
  padding-top: 40px;
}

.faq-preview h2 {
  margin: 0 0 8px;
}

/* 首页反馈入口 */

.feedback-block {
  padding-top: 40px;
}

.feedback-block h2 {
  margin: 0 0 10px;
}

.feedback-block > p {
  max-width: var(--body-col);
  margin-bottom: 12px;
  font-size: 16px;
  line-height: 1.8;
}

/* ===== 服务项目页 ===== */

.project-list > h2 {
  margin: 0 0 8px;
}

.project-list > p {
  max-width: var(--body-col);
  margin-bottom: 24px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-muted);
}

.project-item {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 28px;
  align-items: start;
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.project-figure {
  margin: 0;
}

.project-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.project-figure figcaption {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-muted);
}

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

.project-body h3 {
  margin: 0 0 8px;
  font-size: 20px;
}

.project-scene {
  margin: 0 0 12px;
  font-size: 16px;
  line-height: 1.85;
}

.project-deliverables-label {
  margin: 0 0 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-blue);
}

.project-deliverables {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 15px;
  line-height: 1.75;
}

.project-deliverables li {
  position: relative;
  padding-left: 16px;
  margin: 0 0 6px;
}

.project-deliverables li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--ochre);
}

.judge-criteria {
  padding: 32px 0 0;
  border-top: 1px solid var(--line);
  margin-top: 8px;
}

.judge-criteria > h2 {
  margin: 0 0 8px;
}

.judge-criteria > p {
  max-width: var(--body-col);
  margin-bottom: 16px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-muted);
}

.judge-list {
  margin: 0 0 16px;
  padding-left: 1.35em;
}

.judge-list li {
  margin-bottom: 10px;
  font-size: 16px;
  line-height: 1.85;
}

.scope-exclude {
  padding: 32px 0 0;
  border-top: 1px solid var(--line);
  margin-top: 24px;
}

.scope-exclude > h2 {
  margin: 0 0 8px;
}

.scope-exclude > p {
  max-width: var(--body-col);
  margin-bottom: 14px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-muted);
}

.scope-note a + a {
  margin-left: 12px;
}

/* ===== 方案规划页 ===== */

.plan-docs > h2,
.storyboard-section > h2,
.material-list > h2,
.change-order > h2,
.next-links > h2 {
  margin: 0 0 8px;
}

.plan-docs > p,
.storyboard-section > p,
.material-list > p,
.change-order > p,
.next-links > p {
  max-width: var(--body-col);
  margin-bottom: 20px;
  font-size: 16px;
  line-height: 1.85;
}

.plan-docs .media-block {
  margin: 0 0 20px;
}

.storyboard-section {
  padding-top: 32px;
  border-top: 1px solid var(--line);
  margin-top: 32px;
}

.storyboard-step {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.storyboard-step h3 {
  margin: 0 0 6px;
  font-size: 17px;
}

.storyboard-step p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
}

.material-list {
  padding-top: 32px;
  border-top: 1px solid var(--line);
  margin-top: 32px;
}

.material-list .checklist strong {
  display: block;
  margin-bottom: 2px;
  font-size: 16px;
}

.change-order {
  padding-top: 32px;
  border-top: 1px solid var(--line);
  margin-top: 32px;
}

.next-links {
  padding-top: 32px;
  border-top: 1px solid var(--line);
  margin-top: 32px;
}

/* ===== 交付标准页 ===== */

.content-section {
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.content-section:first-child {
  padding-top: 0;
  border-top: 0;
}

.content-section > h2 {
  margin: 0 0 8px;
}

.content-section > p {
  max-width: var(--body-col);
  margin-bottom: 16px;
  font-size: 16px;
  line-height: 1.85;
}

.section-figure {
  margin: 0 0 20px;
}

.two-column-notes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin: 0 0 16px;
}

.note-block {
  min-width: 0;
  padding: 16px 18px;
  background-color: var(--sand);
  border-radius: var(--radius);
}

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

.note-block ul {
  margin: 0;
  padding-left: 1.2em;
  font-size: 15px;
  line-height: 1.8;
}

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

.archive-blocks {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 0 0 16px;
}

.archive-block {
  padding: 16px 18px;
  border-left: 3px solid var(--line);
}

.archive-block h3 {
  margin: 0 0 6px;
  font-size: 17px;
}

.archive-block p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
}

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

.coordination-column {
  min-width: 0;
  padding: 16px;
  background-color: var(--sand);
  border-radius: var(--radius);
}

.coordination-column h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.coordination-column ul {
  margin: 0;
  padding-left: 1.2em;
  font-size: 14px;
  line-height: 1.75;
}

.coordination-column li:last-child {
  margin-bottom: 0;
}

.sidebar-sticky {
  position: sticky;
  top: calc(var(--header-h) + 20px);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 20px 24px 8px;
  border-top: 1px solid var(--line);
  font-size: 14px;
}

.related-links-label {
  color: var(--text-muted);
}

.related-links-item {
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink-blue);
}

.related-links-item:hover {
  border-color: var(--ochre);
  color: var(--ochre);
  text-decoration: none;
}

.plain-list {
  margin: 0;
  padding-left: 1.2em;
  font-size: 15px;
  line-height: 1.8;
}

/* ===== 进展记录页 ===== */

.section-block {
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.section-block:first-child {
  padding-top: 0;
  border-top: 0;
}

.section-block > h2 {
  margin: 0 0 10px;
}

.section-block > p {
  max-width: var(--body-col);
  margin-bottom: 16px;
  font-size: 16px;
  line-height: 1.85;
}

.section-block > p .term {
  color: var(--ink-blue);
  margin-right: 4px;
}

.stage-legend {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.stage-legend li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
  background-color: var(--sand);
  border-radius: var(--radius);
}

.stage-legend strong {
  font-weight: 500;
  color: var(--ink-blue);
}

.stage-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.stage-item {
  display: grid;
  grid-template-columns: minmax(0, 200px) minmax(0, 1fr);
  gap: 24px;
  padding: 18px 0;
  margin: 0;
  border-top: 1px solid var(--line);
}

.stage-item-head {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  min-width: 0;
}

.stage-item-head .status-dot {
  margin-top: 0.55em;
}

.stage-item-head .stage-code {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ochre);
}

.stage-item-head .stage-name {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink-blue);
}

.stage-item-head .stage-status {
  display: block;
  margin-top: 2px;
  font-size: 13px;
  color: var(--text-muted);
}

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

.stage-item-body .stage-update {
  margin: 0 0 6px;
  font-size: 16px;
  line-height: 1.8;
}

.stage-item-body .stage-owner {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ===== 合作流程页 ===== */

.page-head {
  padding-bottom: 8px;
}

.intro-media {
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.intro-media h2 {
  margin: 0 0 14px;
}

.intro-media .media-figure {
  margin: 0 0 16px;
}

.intro-media > p {
  max-width: var(--body-col);
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
}

.workflow-steps {
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.workflow-steps > h2 {
  margin: 0 0 8px;
}

.workflow-steps > p {
  max-width: var(--body-col);
  margin-bottom: 20px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-muted);
}

.step-item {
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.step-item:first-of-type {
  border-top: 1px solid var(--line);
}

.step-index {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: -0.01em;
  color: var(--ochre);
}

.step-item h3 {
  margin: 0 0 4px;
  font-size: 19px;
}

.step-owner {
  margin: 0 0 12px;
  font-size: 14px;
  color: var(--text-muted);
}

.step-detail {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.step-input,
.step-output {
  min-width: 0;
  padding: 14px 16px;
  background-color: var(--sand);
  border-radius: var(--radius);
}

.step-input h4,
.step-output h4 {
  margin: 0 0 8px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink-blue);
}

.step-input ul,
.step-output ul {
  margin: 0;
  padding-left: 1.2em;
  font-size: 15px;
  line-height: 1.8;
}

.step-input li:last-child,
.step-output li:last-child {
  margin-bottom: 0;
}

.first-talk {
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.first-talk > h2 {
  margin: 0 0 8px;
}

.first-talk > p {
  max-width: var(--body-col);
  margin-bottom: 16px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-muted);
}

.first-talk .check-list strong {
  display: block;
  margin-bottom: 2px;
}

.change-path {
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.change-path > h2 {
  margin: 0 0 8px;
}

.change-path > p {
  max-width: var(--body-col);
  margin-bottom: 16px;
  font-size: 16px;
  line-height: 1.85;
}

/* ===== 常见问题页 ===== */

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

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

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

.faq-group {
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.faq-group:first-child {
  padding-top: 8px;
  border-top: 0;
}

.faq-group > h2 {
  margin: 0 0 6px;
}

.faq-group-note {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-muted);
}

.faq-figure {
  margin: 0 0 16px;
}

.feedback-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

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

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

.feedback-item p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
}

/* ===== 404 页 ===== */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 64px 24px 40px;
}

.error-inner {
  max-width: 640px;
  width: 100%;
}

.error-code {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--ochre);
}

.error-main h1 {
  margin: 0 0 16px;
  font-size: 34px;
  line-height: 1.35;
}

.error-lead {
  margin: 0 0 28px;
  font-size: 17px;
  line-height: 1.85;
  color: var(--text-ink);
}

.path-note {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-muted);
  word-break: break-all;
}

.error-paths {
  margin: 0 0 28px;
  padding: 20px;
  background-color: var(--sand);
  border-radius: var(--radius);
}

.error-paths h2 {
  margin: 0 0 12px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.error-paths ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.error-paths li {
  margin: 0;
  font-size: 15px;
}

.error-paths a {
  color: var(--ink-blue);
  text-decoration: underline;
  text-decoration-color: var(--line);
  text-underline-offset: 3px;
}

.error-paths a:hover {
  color: var(--ochre);
  text-decoration-color: var(--ochre);
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0 0 24px;
}

.error-foot {
  margin: 0;
  font-size: 14px;
  color: var(--text-muted);
}

.error-foot a {
  color: var(--ochre);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* --------------------------------------------------------------------------
   5. responsive —— 断点 1080px / 900px / 744px / 420px
   -------------------------------------------------------------------------- */

@media (max-width: 1080px) {
  .hero-inner {
    gap: 32px;
  }

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

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

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

  .coordination-column:last-child {
    grid-column: span 2;
  }

  .stage-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .stage-node {
    padding-bottom: 12px;
  }
}

@media (max-width: 900px) {
  .page-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 36px;
  }

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

  .site-nav {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }
}

@media (max-width: 744px) {
  body {
    font-size: 16px;
  }

  h1,
  .page-title,
  .hero-text h1,
  .error-main h1 {
    font-size: 26px;
    line-height: 1.4;
  }

  h2 {
    font-size: 21px;
  }

  h3 {
    font-size: 18px;
  }

  .inner-main,
  .container,
  .hero-inner,
  .hero-quick,
  .service-matrix,
  .footer-inner,
  .related-links,
  .page-hero-inner {
    padding-left: 18px;
    padding-right: 18px;
  }

  .inner-main {
    padding-bottom: calc(var(--bottom-nav-h) + 40px + env(safe-area-inset-bottom));
  }

  .breadcrumb {
    padding-top: 16px;
  }

  .page-header {
    padding: 18px 0 14px;
  }

  /* 首页 hero 竖排 */

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    padding-top: 32px;
    padding-bottom: 28px;
  }

  .hero-text h1 {
    margin-bottom: 14px;
  }

  .hero-lead {
    font-size: 16px;
    margin-bottom: 20px;
  }

  .hero-actions .btn {
    flex: 1 1 auto;
    min-width: 0;
  }

  .hero-quick {
    grid-template-columns: minmax(0, 1fr);
    padding-bottom: 24px;
  }

  .quick-col {
    padding: 16px 0;
  }

  .quick-col + .quick-col {
    padding-left: 0;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .service-matrix {
    padding-top: 32px;
  }

  .matrix-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .flow-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .stage-track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 16px;
  }

  .stage-node:nth-child(2n) {
    padding-right: 0;
  }

  /* 页脚竖排 */

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

  .footer-group a {
    display: flex;
    align-items: center;
    min-height: 44px;
  }

  .footer-group li {
    margin-bottom: 0;
    border-bottom: 1px solid var(--line);
  }

  /* 服务项目页 */

  .project-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
    padding: 24px 0;
  }

  /* 交付标准页 */

  .two-column-notes {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .coordination-columns {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  .coordination-column:last-child {
    grid-column: auto;
  }

  /* 交付物表转卡片 */

  .spec-table,
  .doc-table {
    display: block;
    border: 0;
  }

  .spec-table thead,
  .doc-table thead {
    display: none;
  }

  .spec-table tbody,
  .doc-table tbody {
    display: block;
  }

  .spec-table tr,
  .doc-table tr {
    display: block;
    margin-bottom: 12px;
    padding: 14px 16px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background-color: var(--paper);
  }

  .spec-table tr:last-child,
  .doc-table tr:last-child {
    margin-bottom: 0;
  }

  .spec-table td,
  .doc-table td {
    display: block;
    padding: 0 0 8px;
    border: 0;
    font-size: 15px;
  }

  .spec-table td:last-child,
  .doc-table td:last-child {
    padding-bottom: 0;
  }

  .spec-table td::before,
  .doc-table td::before {
    content: attr(data-label);
    display: block;
    margin-bottom: 2px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: var(--text-muted);
  }

  .table-wrap {
    border: 0;
    overflow: visible;
  }

  /* 进展记录页 */

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

  .stage-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
    padding: 16px 0;
  }

  /* 合作流程页 */

  .step-detail {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  /* 404 */

  .error-main {
    padding: 40px 18px 24px;
  }

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

  .error-actions .btn {
    flex: 1 1 auto;
  }

  /* 侧栏卡片移动端保持可读 */

  .sidebar-sticky {
    position: static;
  }
}

@media (max-width: 420px) {
  .stage-track {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }

  .stage-node {
    padding: 14px 0 10px 20px;
    border-top: 0;
    border-left: 2px solid var(--line);
  }

  .stage-node::before {
    top: 20px;
    left: -6px;
  }

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

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

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

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

/* 减少动效偏好 */

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

  *,
  *::before,
  *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }
}