/* ============================================================
   base
   ============================================================ */
:root {
  --color-page: #F5F6F7;
  --color-card: #FFFFFF;
  --color-text: #1A1D21;
  --color-accent: #0F62FE;
  --color-muted: #5F6B7A;
  --color-footer: #0C0E12;
  --color-footer-text: #C6CDD4;
  --color-footer-link: #9BA6B2;
  --color-border: #E3E6EA;
  --font-stack: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --container-width: 1200px;
  --content-width: 760px;
  --radius: 8px;
  --header-height: 64px;
  --space-section: 72px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-stack);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-page);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #0A50CC;
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text);
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2.375rem;
}

h3 {
  font-size: 1.5rem;
}

p {
  margin-bottom: 1rem;
}

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

/* ============================================================
   layout
   ============================================================ */
.site-header {
  background-color: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

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

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.01em;
}

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

.nav-link {
  display: inline-block;
  padding: 8px 16px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-muted);
  border-radius: 4px;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.nav-link:hover {
  color: var(--color-text);
  background-color: rgba(15, 98, 254, 0.06);
}

.nav-link.is-current {
  color: var(--color-accent);
  background-color: rgba(15, 98, 254, 0.08);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  cursor: pointer;
}

.toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.site-main {
  min-height: 60vh;
}

.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 72px;
}

.site-footer {
  background-color: var(--color-footer);
  color: var(--color-footer-text);
  padding: 56px 0 0;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}

.footer-col h2 {
  font-size: 1rem;
  font-weight: 600;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--color-footer-text);
  margin-bottom: 0;
}

.footer-nav ul,
.footer-service ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-nav a,
.footer-service a {
  font-size: 0.875rem;
  color: var(--color-footer-link);
  transition: color 0.2s ease;
}

.footer-nav a:hover,
.footer-service a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8125rem;
  color: var(--color-footer-link);
  margin-bottom: 0;
}

/* 面包屑 */
.breadcrumb-nav {
  background-color: var(--color-card);
  border-bottom: 1px solid var(--color-border);
}

.breadcrumb-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 12px 24px;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
}

.breadcrumb-list a {
  color: var(--color-muted);
}

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

.breadcrumb {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 8px;
}

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

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

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

.breadcrumb-sep {
  color: #B0B8C2;
}

/* 页面标题区 */
.page-header {
  margin-bottom: 32px;
}

.page-title {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 8px;
}

.page-title-area {
  margin-bottom: 32px;
}

.page-title-inner p,
.page-title-desc,
.page-intro {
  font-size: 1rem;
  color: var(--color-muted);
  max-width: var(--content-width);
  line-height: 1.8;
}

.page-title-block {
  margin-bottom: 48px;
}

.page-lead {
  font-size: 1.125rem;
  color: var(--color-muted);
  max-width: var(--content-width);
  line-height: 1.8;
}

/* 通用布局容器 */
.layout-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* 主内容 + 右侧 aside */
.main-content {
  min-width: 0;
}

.sidebar-aside {
  min-width: 0;
}

/* 左侧目录 + 内容 */
.sidebar-left {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

.sidebar-left .service-content,
.sidebar-left .page-content {
  min-width: 0;
}

/* ============================================================
   components
   ============================================================ */

/* 区块标题 */
.section-header {
  margin-bottom: 40px;
}

.section-number,
.section-index,
.section-num {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.section-header h2,
.section-heading h2,
.section-head h2 {
  font-size: 2.375rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.section-header p,
.section-heading p,
.section-head .section-intro {
  font-size: 1rem;
  color: var(--color-muted);
  max-width: var(--content-width);
  line-height: 1.8;
}

.section-heading {
  margin-bottom: 32px;
}

.section-heading h2 {
  font-size: 2rem;
}

.section-heading p {
  font-size: 1rem;
  color: var(--color-muted);
  max-width: var(--content-width);
}

/* 文本链接 */
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 0.9375rem;
  margin-top: 24px;
}

.text-link::after {
  content: "→";
  transition: transform 0.2s ease;
}

.text-link:hover::after {
  transform: translateX(4px);
}

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

.faq-item summary {
  padding: 20px 24px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: background-color 0.2s ease;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--color-muted);
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.faq-item[open] summary {
  background-color: rgba(15, 98, 254, 0.04);
}

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

.faq-item .faq-answer,
.faq-item > p {
  padding: 0 24px 20px;
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.8;
}

/* 卡片 hover 边框高亮 */
.reference-card,
.role-card,
.link-card,
.related-card,
.related-link-card,
.suggestion-item,
.check-card {
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.reference-card:hover,
.role-card:hover,
.link-card:hover,
.related-card:hover,
.related-link-card:hover,
.suggestion-item:hover,
.check-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 4px 16px rgba(15, 98, 254, 0.08);
}

/* 图片容器 */
figure {
  margin: 0;
}

figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 表格 */
.table-wrapper,
.overview-table-wrap,
.compare-table-wrap {
  overflow-x: auto;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.comparison-table,
.service-table {
  width: 100%;
  min-width: 640px;
}

.comparison-table th,
.comparison-table td,
.service-table th,
.service-table td {
  padding: 16px 20px;
  text-align: left;
  font-size: 0.9375rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

.comparison-table thead th,
.service-table thead th {
  background-color: #F0F2F5;
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
}

.comparison-table tbody tr:last-child th,
.comparison-table tbody tr:last-child td,
.service-table tbody tr:last-child th,
.service-table tbody tr:last-child td {
  border-bottom: none;
}

.comparison-table tbody th,
.service-table tbody th {
  font-weight: 600;
  color: var(--color-text);
  background-color: #FAFBFC;
}

/* 侧栏卡片 */
.aside-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
}

.aside-card h2,
.aside-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.aside-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.aside-list li h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.aside-list li p {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin-bottom: 0;
  line-height: 1.7;
}

.aside-note {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.7;
}

/* 相关链接 */
.related-links {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.related-links-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
}

.related-links-item {
  font-size: 0.875rem;
  color: var(--color-accent);
  padding: 6px 12px;
  background-color: rgba(15, 98, 254, 0.06);
  border-radius: 4px;
  transition: background-color 0.2s ease;
}

.related-links-item:hover {
  background-color: rgba(15, 98, 254, 0.12);
}

/* ============================================================
   pages
   ============================================================ */

/* ---------- 首页 ---------- */
.home-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 72px;
}

/* hero */
.hero-section {
  padding: 64px 0 56px;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.hero-content h1 {
  font-size: 2.75rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 1.125rem;
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 480px;
}

.service-entry-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.service-entry-link {
  display: block;
  padding: 16px 20px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-text);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.service-entry-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.hero-media {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background-color: #E8EBEF;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 项目参考 */
.project-reference-section {
  padding: 64px 0;
}

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

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

.reference-media {
  aspect-ratio: 16 / 10;
  background-color: #E8EBEF;
  overflow: hidden;
}

.reference-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.reference-card:hover .reference-media img {
  transform: scale(1.03);
}

.reference-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  padding: 20px 20px 8px;
}

.reference-card p {
  font-size: 0.9375rem;
  color: var(--color-muted);
  padding: 0 20px 20px;
  line-height: 1.7;
  margin-bottom: 0;
}

/* 对比表 */
.comparison-section {
  padding: 64px 0;
}

/* 流程概览 */
.process-overview-section {
  padding: 64px 0;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.process-step {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px 20px;
  position: relative;
}

.step-number {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.process-step h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.process-step p {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 0;
}

/* 选择建议 */
.recommend-section {
  padding: 64px 0;
}

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

.recommend-column {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
}

.recommend-column h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-accent);
}

.recommend-column p {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 0;
}

/* FAQ 预览 */
.faq-preview-section {
  padding: 64px 0;
}

/* ---------- 服务项目页 ---------- */
.page-services .service-catalog {
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.catalog-inner {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
}

.catalog-inner h2 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

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

.catalog-list a {
  display: block;
  padding: 10px 12px;
  font-size: 0.9375rem;
  color: var(--color-muted);
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.catalog-list a:hover {
  background-color: rgba(15, 98, 254, 0.06);
  color: var(--color-accent);
}

.service-detail-block {
  margin-bottom: 64px;
  padding-top: 8px;
}

.service-detail-block .detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 24px;
}

.detail-col h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.solution-list,
.scene-list,
.deliverable-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.solution-list li,
.scene-list li,
.deliverable-list li {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.7;
  padding-left: 20px;
  position: relative;
}

.solution-list li::before,
.scene-list li::before,
.deliverable-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent);
}

.service-figure {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background-color: #E8EBEF;
  margin-top: 24px;
}

.service-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.service-figure figcaption {
  font-size: 0.8125rem;
  color: var(--color-muted);
  padding: 12px 16px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-top: none;
  border-radius: 0 0 var(--radius) var(--radius);
}

.service-suggestion {
  margin-top: 64px;
}

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

.suggestion-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
}

.suggestion-item h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.suggestion-item p {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 0;
}

.service-related {
  margin-top: 64px;
}

.service-related .related-links {
  border-top: none;
  margin-top: 0;
  padding-top: 0;
}

/* ---------- 覆盖区域页 ---------- */
.page-coverage .coverage-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  align-items: start;
  margin-bottom: 64px;
}

.content-block {
  margin-bottom: 56px;
}

.content-block h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.content-block p {
  font-size: 1rem;
  color: var(--color-muted);
  line-height: 1.8;
  max-width: var(--content-width);
}

.media-figure {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background-color: #E8EBEF;
  margin: 24px 0;
}

.media-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-figure figcaption {
  font-size: 0.8125rem;
  color: var(--color-muted);
  padding: 12px 16px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-top: none;
}

.flow-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 24px 0;
}

.flow-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 16px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
}

.flow-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: rgba(15, 98, 254, 0.1);
  color: var(--color-accent);
  font-weight: 700;
  font-size: 0.9375rem;
  border-radius: 50%;
}

.flow-content h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.flow-content p {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 0;
}

.checklist {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 20px 0;
}

.checklist li {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.7;
  padding-left: 24px;
  position: relative;
}

.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.sidebar-aside .aside-card {
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.coverage-layout .related-links {
  grid-column: 1 / -1;
}

.link-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.link-card {
  display: block;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
}

.link-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text);
}

.link-card p {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 0;
}

.link-card:hover h3 {
  color: var(--color-accent);
}

/* ---------- 制作流程页 ---------- */
.process-overview {
  margin-bottom: 64px;
}

.process-steps-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.step-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 16px;
  text-align: center;
}

.step-item .step-number {
  display: block;
  margin-bottom: 8px;
}

.step-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
}

.process-detail-block {
  margin-bottom: 72px;
}

.process-detail-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: start;
}

.process-text-col p {
  font-size: 1rem;
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: 16px;
}

.process-text-col h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 24px 0 12px;
}

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

.check-list li {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.7;
  padding-left: 20px;
  position: relative;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.process-figure {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background-color: #E8EBEF;
}

.process-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.process-figure figcaption {
  font-size: 0.8125rem;
  color: var(--color-muted);
  padding: 12px 16px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-top: none;
}

.acceptance-block {
  margin-bottom: 72px;
}

.acceptance-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.acceptance-list li {
  display: flex;
  gap: 16px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
}

.check-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(15, 98, 254, 0.1);
  color: var(--color-accent);
  border-radius: 50%;
  font-size: 0.8125rem;
  font-weight: 700;
}

.acceptance-text h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.acceptance-text p {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 0;
}

.related-links-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.related-link-card {
  display: block;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
}

.related-link-card h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.related-link-card p {
  font-size: 0.8125rem;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 0;
}

/* ---------- 注意事项页 ---------- */
.page-notice .notice-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 48px;
  align-items: start;
}

.notice-section {
  margin-bottom: 56px;
}

.notice-section .section-head {
  margin-bottom: 16px;
}

.notice-section .section-head h2 {
  font-size: 1.75rem;
  font-weight: 700;
}

.check-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 16px;
}

.check-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.copyright-block {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
}

.copyright-block h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.copyright-block p {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: 8px;
}

.summary-list {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
}

.summary-list h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.summary-check {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 24px;
}

.notice-aside {
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.aside-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.aside-links a {
  display: block;
  padding: 10px 12px;
  font-size: 0.9375rem;
  color: var(--color-muted);
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.aside-links a:hover {
  background-color: rgba(15, 98, 254, 0.06);
  color: var(--color-accent);
}

.notice-figure {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background-color: #E8EBEF;
  max-width: var(--container-width);
  margin: 0 auto;
}

.notice-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.notice-figure figcaption {
  font-size: 0.8125rem;
  color: var(--color-muted);
  padding: 12px 16px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-top: none;
}

/* ---------- 问题反馈页 ---------- */
.page-faq .page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  align-items: start;
}

.faq-section {
  margin-bottom: 56px;
}

.faq-section .section-number,
.quote-note-section .section-number,
.rule-section .section-number,
.feedback-guide .section-number {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text);
  display: block;
  margin-bottom: 24px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.quote-note-content,
.feedback-guide-content {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 32px;
}

.quote-note-content p,
.feedback-guide-content p {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: 12px;
}

.rule-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 32px;
}

.rule-block {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
}

.rule-block h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.rule-block ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.rule-block li {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.7;
  padding-left: 20px;
  position: relative;
}

.rule-block li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.content-figure {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background-color: #E8EBEF;
  margin: 32px 0;
}

.content-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.content-figure figcaption {
  font-size: 0.8125rem;
  color: var(--color-muted);
  padding: 12px 16px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-top: none;
}

.feedback-aside {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.feedback-aside h2 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.feedback-aside .aside-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
}

.feedback-aside .aside-list li:last-child {
  border-bottom: none;
}

.feedback-aside .aside-list strong {
  display: block;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.feedback-aside .aside-list li p {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 0;
}

.related-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.related-card {
  display: block;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
}

.related-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.related-card p {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 0;
}

.related-card:hover h3 {
  color: var(--color-accent);
}

/* ---------- 团队协作页 ---------- */
.page-team .page-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.sidebar-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 16px;
}

.sidebar-card h2 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.sidebar-anchor-list,
.sidebar-link-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar-anchor-list a,
.sidebar-link-list a {
  display: block;
  padding: 10px 12px;
  font-size: 0.9375rem;
  color: var(--color-muted);
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.sidebar-anchor-list a:hover,
.sidebar-link-list a:hover {
  background-color: rgba(15, 98, 254, 0.06);
  color: var(--color-accent);
}

.team-intro {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 32px;
  align-items: center;
  margin-bottom: 56px;
}

.team-photo {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background-color: #E8EBEF;
}

.team-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-photo figcaption {
  font-size: 0.8125rem;
  color: var(--color-muted);
  padding: 12px 16px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-top: none;
}

.team-intro p {
  font-size: 1rem;
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: 0;
}

.role-section,
.contact-section,
.cooperation-section,
.revision-section {
  margin-bottom: 64px;
}

.role-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 32px;
}

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

.role-card-head {
  padding: 20px 20px 0;
}

.role-card-head h3 {
  font-size: 1.125rem;
  font-weight: 600;
}

.role-content {
  padding: 12px 20px 20px;
}

.role-content p {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 24px;
}

.contact-col {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
}

.contact-col h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.contact-list li {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.7;
  padding-left: 20px;
  position: relative;
}

.contact-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.cooperation-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.coop-step {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  gap: 16px;
}

.step-num {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(15, 98, 254, 0.1);
  color: var(--color-accent);
  font-weight: 700;
  font-size: 0.875rem;
  border-radius: 50%;
}

.step-body h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.step-body p {
  font-size: 0.8125rem;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 0;
}

.revision-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.revision-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
}

.revision-num {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.revision-item h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.revision-item p {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 0;
}

.revision-tip {
  margin-top: 24px;
  background-color: rgba(15, 98, 254, 0.06);
  border: 1px solid rgba(15, 98, 254, 0.15);
  border-radius: var(--radius);
  padding: 16px 20px;
}

.revision-tip p {
  font-size: 0.875rem;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ---------- 404 页 ---------- */
.site-error {
  background-color: var(--color-page);
}

.error-main {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 64px 24px;
}

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

.error-code {
  font-size: 5rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 16px;
}

.error-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.error-desc {
  font-size: 1rem;
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: 12px;
}

.error-help {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 32px;
}

.error-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

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

.btn-primary:hover {
  background-color: #0A50CC;
  border-color: #0A50CC;
  color: #FFFFFF;
}

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

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ============================================================
   responsive
   ============================================================ */
@media (max-width: 1024px) {
  :root {
    --space-section: 56px;
  }

  h1 {
    font-size: 2.25rem;
  }

  h2 {
    font-size: 2rem;
  }

  .hero-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-content h1 {
    font-size: 2.375rem;
  }

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

  .process-step:nth-child(4),
  .process-step:nth-child(5) {
    grid-column: span 1;
  }

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

  .sidebar-left {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 32px;
  }

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

  .page-notice .notice-layout {
    grid-template-columns: minmax(0, 1fr) 240px;
    gap: 32px;
  }

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

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

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

@media (max-width: 768px) {
  :root {
    --space-section: 48px;
    --header-height: 56px;
  }

  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.625rem;
  }

  h3 {
    font-size: 1.25rem;
  }

  .header-inner {
    padding: 0 16px;
    height: var(--header-height);
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: static;
  }

  .site-nav .nav-list {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-card);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 16px 16px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
    z-index: 99;
  }

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

  .nav-link {
    display: block;
    padding: 12px 8px;
    border-radius: 6px;
  }

  .site-main,
  .home-main {
    padding: 24px 16px 56px;
  }

  .inner-main {
    padding: 24px 16px 56px;
  }

  .page-title {
    font-size: 1.75rem;
  }

  .section-header h2,
  .section-heading h2,
  .section-head h2 {
    font-size: 1.625rem;
  }

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

  .hero-content h1 {
    font-size: 1.875rem;
  }

  .hero-lead {
    font-size: 1rem;
  }

  .service-entry-list {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .service-entry-link {
    padding: 14px 16px;
    font-size: 0.875rem;
  }

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

  .reference-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

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

  .sidebar-left {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .page-services .service-catalog {
    position: static;
  }

  .catalog-inner {
    padding: 16px;
  }

  .catalog-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
  }

  .catalog-list a {
    padding: 8px 14px;
    background-color: #F5F6F7;
    border-radius: 20px;
    font-size: 0.8125rem;
  }

  .service-detail-block .detail-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

  .page-coverage .coverage-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .sidebar-aside {
    order: 2;
  }

  .coverage-layout .main-content {
    order: 1;
  }

  .sidebar-aside .aside-card {
    position: static;
  }

  .link-card-grid {
    grid-template-columns: 1fr;
  }

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

  .process-detail-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

  .related-links-grid {
    grid-template-columns: 1fr;
  }

  .page-notice .notice-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .notice-aside {
    position: static;
  }

  .summary-check {
    grid-template-columns: 1fr;
  }

  .page-faq .page-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .feedback-aside {
    position: static;
  }

  .rule-grid {
    grid-template-columns: 1fr;
  }

  .related-card-grid {
    grid-template-columns: 1fr;
  }

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

  .role-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .cooperation-steps,
  .revision-steps {
    grid-template-columns: 1fr;
  }

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

  .footer-bottom {
    padding: 16px;
  }

  .error-code {
    font-size: 3.5rem;
  }

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

  .btn {
    width: 100%;
    max-width: 280px;
  }
}

@media (max-width: 480px) {
  .service-entry-list {
    grid-template-columns: 1fr;
  }

  .process-steps {
    grid-template-columns: 1fr;
  }

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

  .faq-item summary {
    padding: 16px;
    font-size: 0.9375rem;
  }

  .faq-item .faq-answer,
  .faq-item > p {
    padding: 0 16px 16px;
    font-size: 0.875rem;
  }

  .check-card,
  .copyright-block,
  .summary-list,
  .aside-card,
  .feedback-aside {
    padding: 16px;
  }

  .flow-item {
    grid-template-columns: 40px 1fr;
    padding: 16px;
  }

  .flow-number {
    width: 32px;
    height: 32px;
    font-size: 0.8125rem;
  }
}

/* 程序验收反馈：移动端正文优先 */
@media (max-width: 768px) {
  .site-main :is(.page-content, .main-content, .content-main) {
    order: 1;
  }

  .site-main :is(aside, .sidebar) {
    order: 2;
  }
}