/* ============================================================
   base / 基础变量与全局重置
   ============================================================ */
:root {
  --color-bg: #F5F1E8;
  --color-surface: #FFFFFF;
  --color-text: #2B2B2B;
  --color-text-secondary: #555555;
  --color-text-muted: #8A8A8A;
  --color-primary: #D97706;
  --color-primary-dark: #B45309;
  --color-border: #E5E0D6;
  --color-border-light: #EFEAE2;
  --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-size-base: 16px;
  --font-size-small: 14px;
  --font-size-large: 18px;
  --line-height: 1.7;
  --container-width: 1200px;
  --container-padding: 24px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 8px;
  --shadow-card: 0 1px 4px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 4px 16px rgba(0, 0, 0, 0.10);
  --transition-base: 0.25s ease;
  --breakpoint-mobile: 768px;
}

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

html {
  font-size: var(--font-size-base);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-primary-dark);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-primary);
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-text);
}

h1 {
  font-size: 32px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

p {
  margin-bottom: 12px;
}

.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;
}

/* ============================================================
   layout / 全站布局骨架
   ============================================================ */
.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border-light);
}

.header-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
}

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

.site-footer {
  flex-shrink: 0;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border-light);
}

.footer-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px var(--container-padding) 20px;
}

.footer-bottom {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 16px var(--container-padding) 24px;
  border-top: 1px solid var(--color-border-light);
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
}

/* 内页统一骨架 */
.site-inner .site-main.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px var(--container-padding) 56px;
  width: 100%;
}

/* ============================================================
   components / 通用组件
   ============================================================ */
/* 面包屑 */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

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

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

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

.breadcrumb-current {
  color: var(--color-text-secondary);
}

/* 页面标题区 */
.page-header {
  margin-bottom: 28px;
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
}

.page-description {
  font-size: var(--font-size-large);
  color: var(--color-text-secondary);
  max-width: 720px;
  margin-bottom: 0;
}

/* 区块标题 */
.section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 14px;
}

.section-intro {
  color: var(--color-text-secondary);
  margin-bottom: 24px;
  max-width: 720px;
}

.section-heading {
  margin-bottom: 20px;
}

.section-heading h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
}

.section-heading p {
  color: var(--color-text-secondary);
  max-width: 720px;
}

/* 表格容器 */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
}

.table-wrapper table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}

.table-wrapper th,
.table-wrapper td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
  font-size: var(--font-size-base);
  line-height: 1.6;
}

.table-wrapper th {
  background-color: var(--color-bg);
  font-weight: 700;
  color: var(--color-text);
  white-space: nowrap;
}

.table-wrapper tr:last-child td {
  border-bottom: none;
}

/* 筛选标签组 */
.filter-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.filter-tag,
.tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 18px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background-color: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: var(--font-size-small);
  line-height: 1.4;
  cursor: pointer;
  transition: all var(--transition-base);
  min-height: 36px;
}

.filter-tag:hover,
.tag:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}

.filter-tag.is-active,
.tag.is-active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #FFFFFF;
}

/* 相关链接列表 */
.related-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.related-list li a {
  display: inline-block;
  padding: 6px 0;
  color: var(--color-primary-dark);
  border-bottom: 1px solid transparent;
}

.related-list li a:hover {
  border-bottom-color: var(--color-primary-dark);
}

/* ============================================================
   components / 页头导航
   ============================================================ */
.brand-logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0;
  line-height: 1.2;
  flex-shrink: 0;
}

.brand-logo:hover {
  color: var(--color-primary-dark);
}

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

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

.nav-list li a {
  display: inline-block;
  padding: 10px 16px;
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--transition-base), background-color var(--transition-base);
}

.nav-list li a:hover {
  color: var(--color-primary-dark);
  background-color: var(--color-bg);
}

.nav-list li a.is-current {
  color: var(--color-primary-dark);
  font-weight: 700;
  background-color: var(--color-bg);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}

.nav-toggle-icon {
  display: block;
  position: relative;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: background-color var(--transition-base);
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-base);
}

.nav-toggle-icon::before {
  top: -7px;
}

.nav-toggle-icon::after {
  top: 7px;
}

/* ============================================================
   components / 页脚
   ============================================================ */
.footer-shell {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.footer-brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.footer-tagline {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  line-height: 1.6;
  max-width: 280px;
}

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

.footer-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul li a {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  transition: color var(--transition-base);
}

.footer-col ul li a:hover {
  color: var(--color-primary-dark);
}

/* ============================================================
   pages / 首页
   ============================================================ */
/* 首屏 */
.hero-section {
  background-color: var(--color-bg);
  padding: 56px 0 64px;
}

.hero-content {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  text-align: center;
}

.hero-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.hero-subtitle {
  font-size: var(--font-size-large);
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0 auto 24px;
}

.hero-cta {
  display: inline-block;
  padding: 12px 32px;
  background-color: var(--color-primary);
  color: #FFFFFF;
  font-size: var(--font-size-base);
  font-weight: 700;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-base);
  margin-bottom: 32px;
}

.hero-cta:hover {
  background-color: var(--color-primary-dark);
  color: #FFFFFF;
}

.hero-scroll-hint {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
}

.hero-media {
  max-width: var(--container-width);
  margin: 32px auto 0;
  padding: 0 var(--container-padding);
}

.hero-media img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

/* 区块通用内边距 */
.section-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding);
}

/* 能力概况 */
.capability-section {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border-light);
}

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

.capability-item {
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--color-border-light);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.capability-item:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.capability-item h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.capability-item p {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* 服务目录摘要 */
.service-summary-section {
  background-color: var(--color-bg);
}

.service-summary-layout {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: start;
}

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

.service-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  transition: box-shadow var(--transition-base);
}

.service-item:hover {
  box-shadow: var(--shadow-card-hover);
}

.service-item h3 {
  font-size: 18px;
  margin-bottom: 6px;
}

.service-item p {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.service-item a {
  font-size: var(--font-size-small);
  font-weight: 700;
  color: var(--color-primary-dark);
}

.service-summary-media img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

/* 热门榜单 */
.hot-rank-section {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border-light);
}

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

.rank-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  transition: box-shadow var(--transition-base);
}

.rank-item:hover {
  box-shadow: var(--shadow-card-hover);
}

.rank-number {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background-color: var(--color-primary);
  color: #FFFFFF;
  font-size: 18px;
  font-weight: 700;
}

.rank-content h3 {
  font-size: 18px;
  margin-bottom: 4px;
}

.rank-content p {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* 应用场景摘要 */
.scenario-summary-section {
  background-color: var(--color-bg);
}

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

.scenario-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
  display: flex;
  flex-direction: column;
}

.scenario-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.scenario-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.scenario-card h3 {
  font-size: 18px;
  padding: 16px 20px 6px;
}

.scenario-card p {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  padding: 0 20px;
  flex: 1;
}

.scenario-card a {
  display: inline-block;
  padding: 12px 20px 16px;
  font-size: var(--font-size-small);
  font-weight: 700;
  color: var(--color-primary-dark);
}

/* 更新记录 */
.update-section {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border-light);
}

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

.update-list li {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border-light);
}

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

.update-list time {
  flex-shrink: 0;
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  min-width: 96px;
}

.update-list span {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}

.more-link {
  display: inline-block;
  font-size: var(--font-size-small);
  font-weight: 700;
  color: var(--color-primary-dark);
}

/* 规则说明 */
.rule-section {
  background-color: var(--color-bg);
}

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

.rule-list li {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* 合作流程入口 */
.process-entry-section {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border-light);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 28px;
}

.process-steps li {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 20px;
}

.process-steps h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.process-steps p {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.process-link {
  display: inline-block;
  padding: 10px 28px;
  background-color: var(--color-primary);
  color: #FFFFFF;
  font-weight: 700;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-base);
}

.process-link:hover {
  background-color: var(--color-primary-dark);
  color: #FFFFFF;
}

/* 首页相关链接 */
.related-links {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px var(--container-padding) 40px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

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

.related-links-item {
  font-size: var(--font-size-small);
  color: var(--color-primary-dark);
}

/* ============================================================
   pages / 服务项目页
   ============================================================ */
.service-intro {
  margin-bottom: 32px;
}

.service-intro p {
  color: var(--color-text-secondary);
  max-width: 720px;
}

.service-catalog {
  margin-bottom: 40px;
}

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

.service-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.service-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.service-card-media img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.service-card-title {
  font-size: 18px;
  padding: 16px 20px 6px;
}

.service-card-desc {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  padding: 0 20px;
  flex: 1;
}

.service-card-link {
  display: inline-block;
  padding: 12px 20px 16px;
  font-size: var(--font-size-small);
  font-weight: 700;
  color: var(--color-primary-dark);
}

/* 选择指南 */
.selection-guide {
  margin-bottom: 40px;
}

.guide-steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 16px;
}

.guide-step {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 20px;
}

.guide-step h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.guide-step p {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.guide-more {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
}

.guide-more a {
  font-weight: 700;
}

/* 相关服务 */
.related-services {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 24px;
}

/* ============================================================
   pages / 应用场景页
   ============================================================ */
.scene-categories {
  margin-bottom: 32px;
}

.category-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.category-tags a {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background-color: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: var(--font-size-small);
  transition: all var(--transition-base);
  min-height: 36px;
}

.category-tags a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}

.scene-details {
  display: flex;
  flex-direction: column;
  gap: 32px;
  margin-bottom: 40px;
}

.scene-item {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 32px;
  align-items: center;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 24px;
}

.scene-item:nth-child(even) {
  grid-template-columns: 1.2fr 1fr;
}

.scene-item:nth-child(even) .scene-media {
  order: 2;
}

.scene-item:nth-child(even) .scene-content {
  order: 1;
}

.scene-media img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.scene-content h2 {
  font-size: 22px;
  margin-bottom: 10px;
}

.scene-content p {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.scene-service-map {
  margin-bottom: 40px;
}

.scene-service-map .table-wrapper {
  margin-top: 16px;
}

.suitable-audience {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 24px;
}

.suitable-audience ul {
  margin: 12px 0 16px;
  padding-left: 0;
}

.suitable-audience ul li {
  padding: 6px 0 6px 20px;
  position: relative;
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
}

.suitable-audience ul li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 16px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-primary);
}

.suitable-audience ul li strong {
  color: var(--color-text);
  font-weight: 600;
}

.suitable-audience p a {
  font-weight: 700;
}

/* ============================================================
   pages / 合作流程页
   ============================================================ */
.process-overview {
  margin-bottom: 40px;
}

.process-overview p {
  color: var(--color-text-secondary);
  max-width: 720px;
}

.content-media-inline {
  margin-top: 20px;
}

.content-media-inline img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.content-media-inline figcaption {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  padding: 8px 0 0;
}

.process-timeline {
  margin-bottom: 40px;
}

.timeline-list {
  position: relative;
  padding-left: 32px;
}

.timeline-list::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background-color: var(--color-border);
}

.timeline-item {
  position: relative;
  margin-bottom: 24px;
}

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

.timeline-marker {
  position: absolute;
  left: -32px;
  top: 8px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: var(--color-primary);
  border: 3px solid var(--color-surface);
  box-shadow: 0 0 0 2px var(--color-primary);
}

.timeline-content {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 20px 24px;
}

.timeline-content h3 {
  font-size: 18px;
  margin-bottom: 6px;
}

.timeline-content p {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}

.timeline-note {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
}

.process-deliverables {
  margin-bottom: 40px;
}

.process-deliverables .table-wrapper {
  margin-bottom: 16px;
}

.process-deliverables > p > a {
  font-weight: 700;
}

.process-start {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 40px;
}

.process-start p {
  color: var(--color-text-secondary);
}

.process-start p a {
  font-weight: 700;
}

/* ============================================================
   pages / 常见问题页
   ============================================================ */
.page-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

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

.faq-categories {
  margin-bottom: 24px;
}

.faq-list {
  margin-bottom: 32px;
}

.faq-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  transition: background-color var(--transition-base);
}

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

.faq-item summary::after {
  content: "+";
  font-size: 20px;
  font-weight: 400;
  color: var(--color-primary-dark);
  transition: transform var(--transition-base);
  flex-shrink: 0;
  margin-left: 12px;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

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

.faq-answer {
  padding: 0 20px 16px;
  border-top: 1px solid var(--color-border-light);
}

.faq-answer p {
  padding-top: 12px;
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.faq-guide {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 24px;
}

.faq-guide p {
  color: var(--color-text-secondary);
}

.faq-guide p a {
  font-weight: 700;
}

/* 侧栏 */
.faq-sidebar {
  min-width: 0;
}

.sidebar-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 24px;
}

.sidebar-figure img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: 8px;
}

.sidebar-figure figcaption {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.sidebar-note {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
}

.sidebar-note a {
  font-weight: 700;
}

/* ============================================================
   pages / 关于我们页
   ============================================================ */
.inner-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  width: 100%;
}

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

.position-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
}

.position-text p {
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.position-figure img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.position-figure figcaption {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  padding: 8px 0 0;
}

.about-work .section-intro {
  margin-bottom: 20px;
}

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

.work-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 24px;
}

.work-item h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.work-item p {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

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

.principle-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 20px 24px;
}

.principle-card h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.principle-card p {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

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

.boundary-list li {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}

.about-related {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 24px;
}

.about-related p {
  color: var(--color-text-secondary);
}

.about-related p a {
  font-weight: 700;
  margin-right: 16px;
  display: inline-block;
  padding: 4px 0;
}

/* ============================================================
   pages / 资料下载页
   ============================================================ */
.layout-shell {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

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

.resource-categories {
  margin-bottom: 24px;
}

.resource-categories .tag-item {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background-color: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: var(--font-size-small);
  transition: all var(--transition-base);
  min-height: 36px;
  margin-right: 8px;
  margin-bottom: 8px;
}

.resource-categories .tag-item:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}

.resource-list-section {
  margin-bottom: 32px;
}

.resource-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 20px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 12px;
  transition: box-shadow var(--transition-base);
}

.resource-item:hover {
  box-shadow: var(--shadow-card-hover);
}

.resource-thumb img {
  width: 160px;
  height: 120px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.resource-info {
  min-width: 0;
}

.resource-name {
  font-size: 18px;
  margin-bottom: 4px;
}

.resource-meta {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  margin-bottom: 6px;
}

.resource-desc {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.resource-link {
  font-size: var(--font-size-small);
  font-weight: 700;
  color: var(--color-primary-dark);
}

.update-log-section {
  margin-bottom: 32px;
}

.update-timeline {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.update-entry {
  display: flex;
  gap: 16px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 14px 20px;
}

.update-date {
  flex-shrink: 0;
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  min-width: 88px;
}

.update-text {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.usage-section {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 24px;
}

.usage-text {
  color: var(--color-text-secondary);
}

.usage-text a {
  font-weight: 700;
}

/* 侧栏 */
.content-aside {
  min-width: 0;
}

.aside-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 24px;
}

.aside-title {
  font-size: 18px;
  margin-bottom: 12px;
}

.aside-figure img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: 8px;
}

.aside-figure figcaption {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.aside-desc {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.aside-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.aside-links a {
  font-size: var(--font-size-small);
  font-weight: 700;
  color: var(--color-primary-dark);
}

/* ============================================================
   pages / 404 页
   ============================================================ */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 48px var(--container-padding);
}

.error-section {
  text-align: center;
  max-width: 480px;
}

.error-code {
  font-size: 72px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.1;
  margin-bottom: 8px;
}

.error-section h1 {
  font-size: 24px;
  margin-bottom: 12px;
}

.error-desc {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

.error-back {
  display: inline-block;
  padding: 10px 28px;
  background-color: var(--color-primary);
  color: #FFFFFF;
  font-weight: 700;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-base);
}

.error-back:hover {
  background-color: var(--color-primary-dark);
  color: #FFFFFF;
}

/* ============================================================
   responsive / 响应式
   ============================================================ */
@media (max-width: 768px) {
  .header-shell {
    min-height: 56px;
    flex-wrap: wrap;
    position: relative;
  }

  .brand-logo {
    font-size: 20px;
  }

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

  .nav-list {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border-light);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
    z-index: 100;
    padding: 8px 0;
  }

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

  .nav-list li a {
    display: block;
    padding: 12px var(--container-padding);
    border-radius: 0;
  }

  .footer-shell {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-top: 32px;
  }

  .footer-links {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .footer-bottom {
    padding-top: 16px;
    padding-bottom: 20px;
  }

  .site-inner .site-main.inner-main {
    padding: 20px var(--container-padding) 40px;
  }

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

  .page-description {
    font-size: var(--font-size-base);
  }

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

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

  .page-layout,
  .layout-shell {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .faq-sidebar,
  .content-aside {
    order: 2;
  }

  .hero-section {
    padding: 40px 0 48px;
  }

  .hero-title {
    font-size: 28px;
  }

  .hero-media img {
    height: 220px;
  }

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

  .service-summary-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .service-summary-media img {
    height: 220px;
  }

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

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

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

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

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

  .scene-item,
  .scene-item:nth-child(even) {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 16px;
  }

  .scene-item:nth-child(even) .scene-media,
  .scene-item:nth-child(even) .scene-content {
    order: initial;
  }

  .scene-media img {
    height: 180px;
  }

  .position-layout {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

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

  .resource-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .resource-thumb img {
    width: 100%;
    height: 160px;
  }

  .update-entry {
    flex-direction: column;
    gap: 4px;
  }

  .related-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .timeline-list {
    padding-left: 24px;
  }

  .timeline-marker {
    left: -24px;
    width: 14px;
    height: 14px;
  }
}

@media (max-width: 480px) {
  .header-shell {
    padding: 0 16px;
  }

  .site-inner .site-main.inner-main {
    padding-left: 16px;
    padding-right: 16px;
  }

  .section-inner {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-content {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-media {
    padding-left: 16px;
    padding-right: 16px;
  }

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

  .footer-shell {
    padding-left: 16px;
    padding-right: 16px;
  }

  .footer-bottom {
    padding-left: 16px;
    padding-right: 16px;
  }

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

  .related-links {
    padding-left: 16px;
    padding-right: 16px;
  }
}