/* ==========================================================================
   秋霞伦理片 · 通用服务官网 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base · 变量与基础排版
   -------------------------------------------------------------------------- */
:root {
  --bg-page: #f7f8f6;
  --bg-block: #ffffff;
  --ink-main: #1f2a2e;
  --ink-soft: #5b6b70;
  --accent: #2f6f6a;
  --accent-dark: #245753;
  --line: #d8ded9;
  --line-soft: #e8ece8;
  --radius: 6px;
  --radius-sm: 4px;
  --shadow-soft: 0 1px 2px rgba(31, 42, 46, 0.05);
  --container: 1120px;
  --container-narrow: 900px;
  --gap-lg: 56px;
  --gap-md: 32px;
  --gap-sm: 16px;
}

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

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

body {
  margin: 0;
  background-color: var(--bg-page);
  color: var(--ink-main);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--ink-main);
  font-weight: 600;
  line-height: 1.35;
}

h1 {
  font-size: 30px;
}

h2 {
  font-size: 23px;
}

h3 {
  font-size: 18px;
}

h4 {
  font-size: 16px;
}

p {
  margin: 0;
}

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

dl,
dt,
dd {
  margin: 0;
}

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

a:hover,
a:focus-visible {
  color: var(--accent-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

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

figure {
  margin: 0;
}

figcaption {
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.6;
}

strong {
  font-weight: 600;
}

time {
  font-variant-numeric: tabular-nums;
}

/* --------------------------------------------------------------------------
   layout · 全站骨架：页头 / 主导航 / 主容器 / 面包屑 / 页标题 / 页脚
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background-color: var(--bg-block);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 24px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 24px;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: var(--ink-main);
  text-decoration: none;
}

.brand:hover,
.brand:focus-visible {
  color: var(--ink-main);
  text-decoration: none;
}

.brand-name {
  font-size: 19px;
  font-weight: 600;
  line-height: 1.3;
}

.brand-tag {
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.4;
}

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

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

.nav-list li {
  display: block;
}

.nav-list a {
  display: block;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--ink-main);
  font-size: 15px;
  line-height: 1.4;
}

.nav-list a:hover,
.nav-list a:focus-visible {
  background-color: var(--line-soft);
  color: var(--accent-dark);
  text-decoration: none;
}

.nav-list a.is-current {
  color: var(--accent-dark);
  font-weight: 600;
  box-shadow: inset 0 -2px 0 var(--accent);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 44px;
  height: 44px;
  margin-left: auto;
  padding: 0 10px;
  background-color: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--ink-main);
}

.site-main {
  display: block;
  max-width: var(--container);
  margin: 0 auto;
  padding: 40px 24px 64px;
}

.inner-main {
  max-width: var(--container);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-bottom: 20px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.6;
}

.breadcrumb a {
  color: var(--ink-soft);
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--accent-dark);
}

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

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

.page-header {
  max-width: var(--container-narrow);
  margin-bottom: var(--gap-md);
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.page-title {
  font-size: 30px;
  font-weight: 600;
  line-height: 1.32;
}

.page-description {
  margin-top: 12px;
  max-width: 68ch;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.8;
}

.page-layout {
  display: grid;
  gap: var(--gap-lg);
  grid-template-columns: minmax(0, 1fr);
}

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

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

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

.section-head {
  max-width: 72ch;
  margin-bottom: var(--gap-md);
}

.section-title {
  font-size: 23px;
  font-weight: 600;
  line-height: 1.4;
}

.section-desc,
.section-intro,
.section-lead {
  margin-top: 10px;
  max-width: 72ch;
  color: var(--ink-soft);
  font-size: 15.5px;
  line-height: 1.8;
}

.section-more,
.section-foot {
  margin-top: var(--gap-md);
  font-size: 15px;
}

.more-link {
  display: inline-block;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--line);
  font-weight: 600;
}

.more-link::after {
  content: " →";
  font-weight: 400;
}

.section-media {
  margin: var(--gap-md) 0 0;
}

.section-media img {
  width: 100%;
  max-height: 340px;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-block);
}

.content-figure {
  margin: 0 0 var(--gap-md);
}

.content-figure img {
  width: 100%;
  max-height: 300px;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-block);
}

/* 页脚 */
.site-footer {
  background-color: var(--bg-block);
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: grid;
  gap: var(--gap-md);
  max-width: var(--container);
  margin: 0 auto;
  padding: 40px 24px 32px;
}

.footer-brand {
  max-width: 60ch;
}

.footer-name {
  font-size: 17px;
  font-weight: 600;
}

.footer-desc {
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.8;
}

.footer-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.footer-list a {
  display: inline-block;
  padding: 6px 0;
  color: var(--ink-main);
  font-size: 14px;
}

.footer-list a:hover,
.footer-list a:focus-visible {
  color: var(--accent-dark);
}

.footer-note {
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
  color: var(--ink-soft);
  font-size: 13.5px;
  line-height: 1.8;
}

.footer-copy {
  margin-top: 6px;
}

.footer-top {
  margin-top: 10px;
}

.footer-top a {
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   components · 通用内容组件
   -------------------------------------------------------------------------- */

/* 编号清单（首页交付流程 / 合作准备 / 内页步骤） */
.flow-list,
.prepare-list,
.step-list,
.checklist {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line-soft);
}

.flow-item,
.prepare-item,
.step-item,
.checklist-item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-soft);
}

.flow-index,
.prepare-index,
.step-num {
  grid-row: 1 / span 2;
  align-self: start;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin-top: 2px;
  background-color: var(--bg-block);
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--accent-dark);
  font-size: 14px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.flow-name,
.prepare-name,
.step-title,
.checklist-title {
  grid-column: 2;
  font-size: 17px;
}

.flow-output,
.flow-brief,
.prepare-note,
.step-desc,
.checklist-desc {
  grid-column: 2;
  max-width: 68ch;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

/* 对照表（首页 / 服务边界页） */
.compare-grid {
  display: grid;
  gap: var(--gap-md);
  grid-template-columns: minmax(0, 1fr);
}

.compare-col {
  min-width: 0;
  padding: 20px 22px;
  background-color: var(--bg-block);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.compare-title,
.compare-heading {
  padding-bottom: 12px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--line);
  font-size: 17px;
}

.compare-include .compare-title,
.compare-col-include .compare-heading {
  color: var(--accent-dark);
}

.compare-exclude .compare-title,
.compare-col-exclude .compare-heading {
  color: var(--ink-soft);
}

.compare-list {
  display: grid;
}

.compare-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 15px;
  line-height: 1.75;
}

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

.compare-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 12px;
}

.compare-label {
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0;
}

.compare-item p {
  min-width: 0;
}

/* 折叠问答 */
.faq-list,
.faq-group {
  display: grid;
  gap: 0;
}

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

.faq-qusetion,
.faq-question,
.faq-item > summary {
  display: block;
  padding: 18px 34px 18px 0;
  position: relative;
  cursor: pointer;
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.6;
  list-style: none;
}

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

.faq-item > summary::after {
  content: "+";
  position: absolute;
  top: 18px;
  right: 6px;
  color: var(--accent);
  font-size: 20px;
  font-weight: 400;
  line-height: 1.2;
}

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

.faq-item > summary:hover {
  color: var(--accent-dark);
}

.faq-answer {
  padding: 0 0 20px;
  max-width: 72ch;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.85;
}

.faq-answer p + p {
  margin-top: 10px;
}

.faq-answer a {
  font-weight: 600;
}

/* 通用条目列表（选择依据 / 范围外需求 / 卡点 / 前提等） */
.select-list,
.outside-list,
.handoff-list,
.premise-list,
.point-list,
.confirm-list,
.related-list,
.error-links,
.faq-next-list,
.path-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line-soft);
}

.select-item,
.outside-item,
.handoff-item,
.premise-item,
.point-item,
.confirm-item,
.related-item,
.error-links li,
.faq-next-list li,
.path-item {
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.select-name,
.outside-name,
.handoff-name,
.premise-item h3,
.point-title,
.confirm-title,
.path-item h3 {
  font-size: 17px;
}

.select-desc,
.outside-desc,
.handoff-item p,
.premise-item p,
.point-desc,
.confirm-desc,
.related-desc,
.path-item p,
.error-note {
  margin-top: 8px;
  max-width: 72ch;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

.related-item a {
  font-size: 16.5px;
  font-weight: 600;
}

.related-list a {
  font-size: 16px;
  font-weight: 600;
}

/* 字段说明块（服务范围页） */
.field-legend,
.field-block {
  display: grid;
  gap: 0;
  margin-top: var(--gap-md);
  border-top: 1px solid var(--line);
}

.field-legend-item,
.field-block > dt,
.field-block > dd {
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 15px;
  line-height: 1.8;
}

.field-block > dt {
  color: var(--ink-main);
  font-weight: 600;
}

.field-block > dd {
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   pages · 首页
   -------------------------------------------------------------------------- */
.hero {
  padding-bottom: var(--gap-lg);
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  display: grid;
  gap: var(--gap-md);
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
}

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

.hero-eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 10px;
  background-color: var(--bg-block);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--accent-dark);
  font-size: 13px;
  line-height: 1.5;
}

.hero-title {
  font-size: 32px;
  font-weight: 600;
  line-height: 1.3;
}

.hero-lead {
  margin-top: 16px;
  max-width: 60ch;
  color: var(--ink-soft);
  font-size: 16.5px;
  line-height: 1.85;
}

.hero-entries {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}

.entry-link {
  display: block;
  padding: 13px 16px;
  background-color: var(--bg-block);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  color: var(--ink-main);
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
}

.entry-link:hover,
.entry-link:focus-visible {
  background-color: #f2f6f4;
  color: var(--accent-dark);
  text-decoration: none;
}

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

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

/* 服务类别总览 */
.category-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.category-item {
  padding: 22px 0;
  border-bottom: 1px solid var(--line-soft);
}

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

.category-summary {
  margin-top: 8px;
  max-width: 70ch;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

.category-audience {
  margin-top: 8px;
  max-width: 70ch;
  color: var(--ink-main);
  font-size: 14.5px;
  line-height: 1.75;
}

.category-audience::before {
  content: "适用对象：";
  color: var(--ink-soft);
}

/* 适用场景索引 */
.scene-groups {
  display: grid;
  gap: var(--gap-md);
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.scene-group {
  min-width: 0;
  padding: 18px 20px;
  background-color: var(--bg-block);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.scene-group-title {
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--accent-dark);
  font-size: 16px;
}

.scene-list {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.scene-item {
  color: var(--ink-main);
  font-size: 15px;
  line-height: 1.75;
}

.scene-pointer {
  display: block;
  margin-top: 4px;
  color: var(--ink-soft);
  font-size: 13.5px;
}

.scene-pointer::before {
  content: "对应类别：";
}

/* 合作前准备事项 */
.section-prepare .prepare-list {
  border-top: 1px solid var(--line);
}

/* 站内内容更新记录 */
.update-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.update-item {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

.update-date {
  grid-row: 1 / span 3;
  color: var(--ink-soft);
  font-size: 13.5px;
  line-height: 1.7;
}

.update-type {
  grid-column: 2;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 600;
}

.update-page {
  grid-column: 2;
  color: var(--ink-main);
  font-size: 15px;
  font-weight: 600;
}

.update-note {
  grid-column: 2;
  max-width: 68ch;
  color: var(--ink-soft);
  font-size: 14.5px;
  line-height: 1.75;
}

/* --------------------------------------------------------------------------
   pages · 服务范围
   -------------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 10px 16px;
  background-color: var(--bg-block);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  z-index: 40;
}

.skip-link:focus {
  left: 16px;
  top: 12px;
}

.scope-catalog {
  min-width: 0;
  padding: 20px;
  background-color: var(--bg-block);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.aside-title {
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
}

.catalog-list {
  display: grid;
  gap: 2px;
  margin-top: 12px;
}

.catalog-item a {
  display: block;
  padding: 9px 8px;
  border-radius: var(--radius-sm);
  color: var(--ink-main);
  font-size: 14.5px;
  line-height: 1.6;
}

.catalog-item a:hover,
.catalog-item a:focus-visible {
  background-color: var(--line-soft);
  color: var(--accent-dark);
  text-decoration: none;
}

.catalog-note {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  color: var(--ink-soft);
  font-size: 13.5px;
  line-height: 1.75;
}

.scope-category {
  scroll-margin-top: 90px;
}

.scope-category .section-title {
  padding-top: 4px;
}

/* --------------------------------------------------------------------------
   pages · 交付流程
   -------------------------------------------------------------------------- */
.flow-overview,
.flow-stages,
.flow-handoff,
.flow-pitfalls,
.related-pages {
  padding: var(--gap-lg) 0;
  border-top: 1px solid var(--line);
}

.flow-overview {
  padding-top: 0;
  border-top: 0;
}

.flow-overview h2,
.flow-stages h2,
.flow-handoff h2,
.flow-pitfalls h2,
.related-pages h2 {
  font-size: 23px;
}

.flow-figure {
  margin: var(--gap-md) 0 0;
}

.flow-figure img {
  width: 100%;
  max-height: 320px;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-block);
}

.flow-overview .flow-list {
  margin-top: var(--gap-md);
  border-top: 1px solid var(--line);
}

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

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

.stage-title {
  font-size: 18px;
}

.stage-columns {
  display: grid;
  gap: var(--gap-md);
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-top: 14px;
}

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

.stage-col-title {
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--accent-dark);
  font-size: 15px;
}

.stage-points {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.stage-points li {
  position: relative;
  padding-left: 16px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

.stage-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  background-color: var(--line);
  border-radius: 50%;
}

.stage-output {
  margin-top: 14px;
  padding: 12px 14px;
  background-color: var(--bg-block);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

.stage-output strong {
  color: var(--ink-main);
}

.pitfall-list {
  display: grid;
  gap: 0;
  margin-top: var(--gap-md);
  border-top: 1px solid var(--line);
}

.pitfall-question {
  padding: 16px 0 4px;
  color: var(--ink-main);
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.6;
}

.pitfall-answer {
  padding: 0 0 18px;
  max-width: 72ch;
  border-bottom: 1px solid var(--line-soft);
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.85;
}

.pitfall-answer a {
  font-weight: 600;
}

.related-pages .related-list {
  margin-top: var(--gap-md);
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  border-top: 0;
  gap: 10px;
}

.related-pages .related-list li {
  padding: 0;
  border-bottom: 0;
}

.related-pages .related-list a {
  display: block;
  padding: 12px 14px;
  background-color: var(--bg-block);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink-main);
}

.related-pages .related-list a:hover,
.related-pages .related-list a:focus-visible {
  border-color: var(--accent);
  color: var(--accent-dark);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   pages · 服务边界
   -------------------------------------------------------------------------- */
.boundary-compare,
.outside-scope,
.misconceptions,
.boundary-premise {
  padding: var(--gap-lg) 0;
  border-top: 1px solid var(--line);
}

.boundary-compare {
  padding-top: 0;
  border-top: 0;
}

.boundary-compare h2,
.outside-scope h2,
.misconceptions h2,
.boundary-premise h2 {
  font-size: 23px;
}

.boundary-compare .compare-grid {
  margin-top: var(--gap-md);
}

.path-list,
.premise-list,
.misconception-list {
  margin-top: var(--gap-md);
}

.misconception-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.misconception-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--line-soft);
}

.misconception-item h3 {
  font-size: 17px;
}

.misconception-item p {
  margin-top: 8px;
  max-width: 72ch;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

.path-item p a {
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   pages · 合作准备
   -------------------------------------------------------------------------- */
.section-checklist .checklist {
  margin-top: var(--gap-md);
  border-top: 1px solid var(--line);
}

.checklist-item {
  grid-template-columns: minmax(0, 1fr);
  counter-increment: checklist-counter;
}

.section-checklist .checklist {
  counter-reset: checklist-counter;
}

.checklist-item .checklist-title::before {
  content: counter(checklist-counter) ". ";
  color: var(--accent-dark);
  font-variant-numeric: tabular-nums;
}

.section-related .related-list {
  margin-top: var(--gap-md);
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  border-top: 0;
  gap: 12px;
}

.section-related .related-item {
  padding: 16px 18px;
  background-color: var(--bg-block);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.section-related .related-item a {
  display: block;
}

/* --------------------------------------------------------------------------
   pages · 常见问题
   -------------------------------------------------------------------------- */
.faq-guide {
  display: grid;
  gap: var(--gap-md);
  grid-template-columns: minmax(0, 1fr);
  padding-bottom: var(--gap-lg);
  border-bottom: 1px solid var(--line);
}

.faq-guide-text {
  min-width: 0;
}

.faq-guide-text > p {
  margin-top: 10px;
  max-width: 68ch;
  color: var(--ink-soft);
  font-size: 15.5px;
  line-height: 1.8;
}

.faq-guide-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.faq-guide-list li {
  padding: 12px 14px;
  background-color: var(--bg-block);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 15px;
  line-height: 1.7;
}

.faq-guide-list strong {
  display: block;
  color: var(--ink-main);
  font-size: 15px;
}

.faq-guide-list a {
  font-weight: 600;
}

.faq-guide-figure {
  min-width: 0;
}

.faq-guide-figure img {
  width: 100%;
  max-height: 320px;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-block);
}

.faq-group {
  padding: var(--gap-lg) 0;
  border-bottom: 1px solid var(--line);
}

.faq-group .section-lead {
  margin-bottom: var(--gap-sm);
}

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

.faq-next {
  padding: var(--gap-lg) 0 0;
}

.faq-next > p {
  margin-top: 10px;
  max-width: 68ch;
  color: var(--ink-soft);
  font-size: 15.5px;
  line-height: 1.8;
}

.faq-next-list {
  margin-top: var(--gap-md);
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  border-top: 0;
  gap: 10px;
}

.faq-next-list li {
  padding: 0;
  border-bottom: 0;
}

.faq-next-list a {
  display: block;
  padding: 12px 14px;
  background-color: var(--bg-block);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink-main);
  font-weight: 600;
}

.faq-next-list a:hover,
.faq-next-list a:focus-visible {
  border-color: var(--accent);
  color: var(--accent-dark);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   pages · 404
   -------------------------------------------------------------------------- */
.error-main {
  max-width: var(--container-narrow);
}

.error-panel {
  padding: 32px 0 var(--gap-md);
  border-bottom: 1px solid var(--line);
}

.error-panel h1 {
  font-size: 28px;
}

.error-text {
  margin-top: 12px;
  max-width: 60ch;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.8;
}

.error-actions {
  margin-top: 22px;
}

.btn {
  display: inline-block;
  padding: 11px 22px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
}

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

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #ffffff;
  text-decoration: none;
}

.error-guide {
  padding-top: var(--gap-md);
}

.error-guide h2 {
  font-size: 20px;
}

.error-links {
  margin-top: var(--gap-sm);
}

.error-links a {
  font-size: 16px;
  font-weight: 600;
}

.error-note {
  margin-top: var(--gap-md);
}

/* --------------------------------------------------------------------------
   responsive · 平板与手机
   -------------------------------------------------------------------------- */
@media (min-width: 760px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: var(--gap-lg);
  }

  .hero-entries {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .footer-inner {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    align-items: start;
  }

  .footer-note {
    grid-column: 1 / -1;
  }

  .faq-guide {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .field-legend {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--gap-md);
  }
}

@media (min-width: 1024px) {
  .page-layout.sidebar-left,
  .sidebar-left .page-layout {
    grid-template-columns: 260px minmax(0, 1fr);
    align-items: start;
  }

  .scope-catalog {
    position: sticky;
    top: 88px;
  }
}

@media (max-width: 899px) {
  .nav-toggle {
    display: flex;
  }

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

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 8px 0 4px;
    border-top: 1px solid var(--line-soft);
  }

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

  .nav-list a {
    padding: 12px 10px;
    font-size: 16px;
  }

  .nav-list a.is-current {
    box-shadow: inset 3px 0 0 var(--accent);
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15.5px;
  }

  .header-inner {
    padding: 12px 18px;
  }

  .site-main {
    padding: 28px 18px 48px;
  }

  .footer-inner {
    padding: 32px 18px 28px;
  }

  h1,
  .page-title,
  .hero-title {
    font-size: 25px;
  }

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

  .flow-item,
  .prepare-item,
  .step-item,
  .checklist-item {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 4px 12px;
  }

  .flow-index,
  .prepare-index,
  .step-num {
    width: 28px;
    height: 28px;
    font-size: 13px;
  }

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

  .update-date {
    grid-row: auto;
  }

  .compare-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .section-media img,
  .content-figure img,
  .flow-figure img,
  .faq-guide-figure img,
  .hero-media img {
    max-height: 260px;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .section,
  .category-item,
  .stage-block,
  .faq-item,
  .scene-group {
    animation: none;
  }
}