/* ==========================================================================
   yuexingan22.cn — 51今日吃瓜 企业官网
   整站样式表 · 版本 1.0
   城市地图风：浅色网格底、深蓝页头、暖橙强调、青绿服务色标
   ========================================================================== */

/* ==========================================================================
   Base — 全局基础
   ========================================================================== */

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: #1f2937;
  background-color: #f4f1ea;
  background-image:
    linear-gradient(rgba(11, 34, 57, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11, 34, 57, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  min-height: 100vh;
}

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

a {
  color: #0e7c7b;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #0b2239;
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-weight: 700;
  line-height: 1.3;
  color: #0b2239;
}

/* 数字与年份使用等宽字体，配合档案感 */
.year-link,
.case-year,
.step-index,
.step-number,
.case-status,
.year-tab,
.error-code {
  font-family: "SF Mono", "Cascadia Code", "Roboto Mono", Consolas, "Courier New",
    monospace;
  font-variant-numeric: tabular-nums;
}

/* ==========================================================================
   Layout — 全站骨架
   ========================================================================== */

.site-header {
  background-color: #0b2239;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(11, 34, 57, 0.18);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.header-topbar {
  display: flex;
  justify-content: flex-end;
  gap: 24px;
  padding: 6px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.header-topbar span {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.72);
  letter-spacing: 0.02em;
}

.header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 14px 0;
}

.brand-logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 22px;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: 0.01em;
}

.brand-tagline {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.06em;
}

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

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  border-radius: 4px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-link:hover {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.08);
}

.nav-item.is-current .nav-link {
  color: #ffffff;
  background-color: rgba(245, 158, 11, 0.18);
}

.nav-item.is-current .nav-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background-color: #f59e0b;
  border-radius: 1px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 8px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 6px;
  cursor: pointer;
}

.nav-toggle-line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: #ffffff;
  border-radius: 1px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.site-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 64px;
}

.site-main.inner-main {
  padding-top: 32px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: #6b7280;
  margin-bottom: 20px;
}

.breadcrumb a {
  color: #0e7c7b;
}

.breadcrumb a:hover {
  color: #0b2239;
}

.breadcrumb-sep {
  color: #9ca3af;
}

.breadcrumb-current {
  color: #4b5563;
  font-weight: 500;
}

/* 页面标题区（全站内页统一） */
.page-header {
  margin-bottom: 36px;
  padding-bottom: 24px;
  border-bottom: 1px solid #e5e0d6;
}

.page-title {
  font-size: 28px;
  font-weight: 700;
  color: #0b2239;
  margin-bottom: 10px;
}

.page-description {
  font-size: 16px;
  line-height: 1.7;
  color: #4b5563;
  max-width: 720px;
}

/* 页脚 */
.site-footer {
  background-color: #0b2239;
  color: rgba(255, 255, 255, 0.75);
  margin-top: auto;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 14px;
  letter-spacing: 0.04em;
}

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

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: #f59e0b;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-brand {
  font-size: 14px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
}

.footer-copy {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* 通用区块标题 */
.section-title {
  font-size: 24px;
  font-weight: 700;
  color: #0b2239;
  margin-bottom: 16px;
}

.section-description {
  font-size: 15px;
  color: #4b5563;
  margin-bottom: 24px;
  max-width: 640px;
}

.section-intro {
  font-size: 15px;
  color: #4b5563;
  margin-bottom: 24px;
  max-width: 640px;
  line-height: 1.7;
}

.section-lead {
  font-size: 15px;
  color: #4b5563;
  margin-bottom: 24px;
  max-width: 720px;
  line-height: 1.7;
}

/* 通用按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 6px;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
  min-height: 44px;
}

.btn-primary {
  background-color: #f59e0b;
  color: #0b2239;
  border: 1px solid #f59e0b;
}

.btn-primary:hover {
  background-color: #d97706;
  border-color: #d97706;
  color: #ffffff;
}

.btn-secondary {
  background-color: transparent;
  color: #0b2239;
  border: 1px solid #0b2239;
}

.btn-secondary:hover {
  background-color: #0b2239;
  color: #ffffff;
}

/* 通用图片容器约束 */
figure img {
  width: 100%;
  object-fit: cover;
}

/* ==========================================================================
   Components — 通用组件
   ========================================================================== */

/* 页面布局：左侧栏 / 右侧栏通用 */
.layout-shell {
  display: flex;
  align-items: flex-start;
  gap: 32px;
}

.page-layout {
  display: flex;
  align-items: flex-start;
  gap: 32px;
}

.page-layout .main-content {
  flex: 1 1 auto;
  min-width: 0;
}

/* 右侧栏布局（默认：主内容在前，aside 在后） */
.layout-sidebar-right .main-content {
  flex: 1 1 auto;
  min-width: 0;
}

.layout-sidebar-right .sidebar-content {
  flex: 0 0 300px;
  min-width: 0;
}

/* 左侧栏布局（services） */
.sidebar-left {
  display: flex;
  align-items: flex-start;
  gap: 32px;
}

.sidebar-left .sidebar-anchor {
  flex: 0 0 260px;
  min-width: 0;
}

.sidebar-left .main-content {
  flex: 1 1 auto;
  min-width: 0;
}

/* 侧栏卡片 */
.sidebar-card {
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
}

.sidebar-title {
  font-size: 16px;
  font-weight: 700;
  color: #0b2239;
  margin-bottom: 12px;
}

.sidebar-text {
  font-size: 14px;
  color: #4b5563;
  line-height: 1.6;
}

/* 锚点面板 */
.anchor-panel {
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
  padding: 20px;
  position: sticky;
  top: 100px;
}

.anchor-title {
  font-size: 16px;
  font-weight: 700;
  color: #0b2239;
  margin-bottom: 12px;
}

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

.anchor-list a {
  display: block;
  padding: 8px 12px;
  font-size: 14px;
  color: #4b5563;
  border-radius: 4px;
  border-left: 3px solid transparent;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.anchor-list a:hover {
  background-color: #f4f1ea;
  color: #0b2239;
  border-left-color: #f59e0b;
}

/* 相关链接横条 */
.related-links {
  margin-top: 40px;
  padding: 16px 20px;
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: #0b2239;
}

.related-links-item {
  font-size: 14px;
  color: #0e7c7b;
  padding: 4px 10px;
  border-radius: 4px;
  background-color: rgba(14, 124, 123, 0.08);
}

.related-links-item:hover {
  background-color: rgba(14, 124, 123, 0.16);
  color: #0b2239;
}

/* FAQ 折叠面板 */
.faq-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 600;
  color: #0b2239;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: background-color 0.2s ease;
}

.faq-item summary:hover {
  background-color: #faf8f4;
}

.faq-item summary::after {
  content: "+";
  font-size: 20px;
  font-weight: 400;
  color: #f59e0b;
  flex-shrink: 0;
  transition: transform 0.25s ease;
}

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

.faq-item .faq-answer {
  padding: 0 20px 16px;
  font-size: 15px;
  color: #4b5563;
  line-height: 1.7;
}

/* ==========================================================================
   Pages — 首页
   ========================================================================== */

/* Hero 首屏品牌区 */
.hero-section {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  padding: 56px 0 48px;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: flex-start;
}

.hero-title {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.25;
  color: #0b2239;
  margin-bottom: 4px;
}

.hero-description {
  font-size: 17px;
  line-height: 1.75;
  color: #4b5563;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.hero-media {
  position: relative;
}

.hero-figure {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #e5e0d6;
  background-color: #ffffff;
}

.hero-figure img {
  width: 100%;
  height: 340px;
  object-fit: cover;
}

/* 热点信号速览 */
.signals-section {
  padding: 48px 0;
  border-top: 1px solid #e5e0d6;
}

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

.signal-card {
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-left: 4px solid #f59e0b;
  border-radius: 8px;
  padding: 20px 20px 16px;
}

.signal-title {
  font-size: 16px;
  font-weight: 600;
  color: #0b2239;
  margin-bottom: 8px;
}

.signal-status {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  color: #0e7c7b;
  background-color: rgba(14, 124, 123, 0.1);
  padding: 2px 10px;
  border-radius: 12px;
  margin-bottom: 8px;
}

.signal-time {
  font-size: 13px;
  color: #6b7280;
}

/* 服务领域分布 */
.services-district {
  padding: 48px 0;
}

.section-header {
  margin-bottom: 24px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.service-card {
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
  padding: 20px;
  position: relative;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.service-card:hover {
  border-color: #f59e0b;
  box-shadow: 0 4px 12px rgba(11, 34, 57, 0.08);
}

.service-code {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: #0e7c7b;
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  border-radius: 6px;
  margin-bottom: 12px;
  transition: transform 0.2s ease;
}

.service-card:hover .service-code {
  transform: scale(1.08);
}

.service-title {
  font-size: 17px;
  font-weight: 600;
  color: #0b2239;
  margin-bottom: 8px;
}

.service-desc {
  font-size: 14px;
  color: #4b5563;
  line-height: 1.65;
  margin-bottom: 12px;
}

.service-link {
  font-size: 14px;
  font-weight: 500;
  color: #0e7c7b;
}

.service-link:hover {
  color: #0b2239;
}

.services-map-figure {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #e5e0d6;
  background-color: #ffffff;
}

.services-map-figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

/* 案例年份索引 */
.cases-archive {
  padding: 48px 0;
  border-top: 1px solid #e5e0d6;
}

.year-selector {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  border-bottom: 2px solid #e5e0d6;
  padding-bottom: 0;
}

.year-link {
  display: inline-block;
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 600;
  color: #6b7280;
  border-radius: 6px 6px 0 0;
  border: 1px solid transparent;
  border-bottom: none;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.year-link:hover {
  color: #0b2239;
  background-color: rgba(245, 158, 11, 0.1);
}

.year-link.is-active {
  color: #0b2239;
  background-color: #ffffff;
  border-color: #e5e0d6;
  border-bottom: 2px solid #ffffff;
  margin-bottom: -2px;
}

.year-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.case-item {
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: background-color 0.2s ease;
}

.case-item:hover {
  background-color: #faf8f4;
}

.case-title {
  font-size: 17px;
  font-weight: 600;
  color: #0b2239;
}

.case-meta {
  font-size: 13px;
  color: #6b7280;
  display: flex;
  gap: 12px;
  align-items: center;
}

.case-summary {
  font-size: 14px;
  color: #4b5563;
  line-height: 1.6;
}

.case-link {
  font-size: 14px;
  font-weight: 500;
  color: #0e7c7b;
  align-self: flex-start;
}

/* 重点项目摘要 */
.featured-project {
  padding: 48px 0;
}

.featured-card {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
  overflow: hidden;
  align-items: center;
}

.featured-info {
  padding: 32px 0 32px 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: flex-start;
}

.featured-title {
  font-size: 24px;
  font-weight: 700;
  color: #0b2239;
}

.featured-summary {
  font-size: 15px;
  color: #4b5563;
  line-height: 1.7;
}

.featured-link {
  font-size: 15px;
  font-weight: 600;
  color: #0e7c7b;
  border-bottom: 2px solid rgba(14, 124, 123, 0.3);
  padding-bottom: 2px;
}

.featured-link:hover {
  color: #0b2239;
  border-bottom-color: #0b2239;
}

.featured-media img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

/* 方法洞察路线 */
.methods-route {
  padding: 48px 0;
  border-top: 1px solid #e5e0d6;
}

.route-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.route-step {
  position: relative;
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
  padding: 20px;
  min-height: 140px;
}

.route-step .step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: #f59e0b;
  color: #0b2239;
  font-size: 15px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 12px;
}

.route-step .step-title {
  font-size: 16px;
  font-weight: 600;
  color: #0b2239;
  margin-bottom: 6px;
}

.route-step .step-desc {
  font-size: 13px;
  color: #4b5563;
  line-height: 1.6;
}

.section-link {
  display: inline-block;
  font-size: 15px;
  font-weight: 600;
  color: #0e7c7b;
  border-bottom: 2px solid rgba(14, 124, 123, 0.3);
  padding-bottom: 2px;
}

.section-link:hover {
  color: #0b2239;
  border-bottom-color: #0b2239;
}

/* 合作流程概览 */
.cooperation-overview {
  padding: 48px 0;
  border-top: 1px solid #e5e0d6;
}

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

.coop-step-card {
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
  padding: 24px 20px;
  border-top: 4px solid #0e7c7b;
}

.coop-title {
  font-size: 17px;
  font-weight: 600;
  color: #0b2239;
  margin-bottom: 8px;
}

.coop-desc {
  font-size: 14px;
  color: #4b5563;
  line-height: 1.65;
}

/* FAQ 入口 */
.faq-preview {
  padding: 48px 0;
  border-top: 1px solid #e5e0d6;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.faq-teaser {
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
  padding: 20px 24px;
}

.faq-question {
  font-size: 16px;
  font-weight: 600;
  color: #0b2239;
  margin-bottom: 8px;
}

.faq-answer {
  font-size: 14px;
  color: #4b5563;
  line-height: 1.65;
  margin-bottom: 8px;
}

.faq-link {
  font-size: 14px;
  font-weight: 500;
  color: #0e7c7b;
}

/* ==========================================================================
   Pages — 内页通用模块
   ========================================================================== */

/* About 页 */
.section-block {
  margin-bottom: 48px;
}

.about-intro {
  display: grid;
  grid-template-columns: 1fr 0.8fr;
  gap: 40px;
  align-items: start;
}

.intro-content p {
  font-size: 15px;
  line-height: 1.75;
  color: #4b5563;
  margin-bottom: 16px;
}

.intro-figure {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #e5e0d6;
  background-color: #ffffff;
}

.intro-figure img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.intro-figure figcaption,
.service-figure figcaption,
.project-media figcaption,
.method-figure figcaption,
.media-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: #6b7280;
  background-color: #faf8f4;
}

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

.boundary-item {
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
  padding: 20px;
  border-left: 4px solid #0e7c7b;
}

.boundary-item-title {
  font-size: 16px;
  font-weight: 600;
  color: #0b2239;
  margin-bottom: 8px;
}

.boundary-item p {
  font-size: 14px;
  color: #4b5563;
  line-height: 1.65;
}

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

.principle-item {
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.principle-item-title {
  font-size: 16px;
  font-weight: 600;
  color: #0b2239;
}

.principle-item p {
  font-size: 14px;
  color: #4b5563;
  line-height: 1.65;
}

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

.related-link-card {
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.related-link-card:hover {
  border-color: #f59e0b;
  box-shadow: 0 4px 12px rgba(11, 34, 57, 0.08);
}

.related-link-title {
  font-size: 16px;
  font-weight: 600;
  color: #0b2239;
}

.related-link-desc {
  font-size: 13px;
  color: #6b7280;
  line-height: 1.6;
}

/* Services 页 */
.service-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 40px;
}

.service-list .service-card {
  border-left: 4px solid #0e7c7b;
}

.service-card-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.service-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: #0e7c7b;
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
  border-radius: 6px;
  flex-shrink: 0;
}

.service-name {
  font-size: 19px;
  font-weight: 600;
  color: #0b2239;
}

.service-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin: 12px 0;
  padding: 12px 16px;
  background-color: #faf8f4;
  border-radius: 6px;
}

.meta-label {
  font-size: 13px;
  font-weight: 600;
  color: #0b2239;
}

.meta-value {
  font-size: 13px;
  color: #4b5563;
}

.service-figure {
  margin-top: 12px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #e5e0d6;
}

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

.service-related {
  margin-top: 12px;
  font-size: 14px;
  color: #6b7280;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.service-related a {
  font-weight: 500;
}

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

.audience-card {
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
  padding: 20px;
}

.audience-role {
  font-size: 16px;
  font-weight: 600;
  color: #0b2239;
  margin-bottom: 8px;
}

.audience-desc {
  font-size: 14px;
  color: #4b5563;
  line-height: 1.65;
}

.service-links {
  margin-top: 24px;
  font-size: 14px;
  color: #4b5563;
}

.service-links a {
  font-weight: 500;
}

/* Cases 页 */
.cases-year-nav {
  margin-bottom: 40px;
}

.year-tabs {
  display: flex;
  gap: 8px;
}

.year-tab {
  display: inline-block;
  padding: 10px 28px;
  font-size: 15px;
  font-weight: 600;
  color: #6b7280;
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.year-tab:hover {
  color: #0b2239;
  border-color: #f59e0b;
}

.cases-group {
  margin-bottom: 48px;
}

.cases-year-title {
  font-size: 22px;
  font-weight: 700;
  color: #0b2239;
  padding-bottom: 12px;
  border-bottom: 2px solid #e5e0d6;
  margin-bottom: 20px;
}

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

.cases-list .case-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 20px;
  align-items: start;
}

.case-media {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #e5e0d6;
}

.case-media img {
  width: 100%;
  height: 140px;
  object-fit: cover;
}

.case-content {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.case-status {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 12px;
  background-color: rgba(14, 124, 123, 0.12);
  color: #0e7c7b;
}

.case-status::before {
  content: "●";
  margin-right: 4px;
  font-size: 10px;
}

.case-year {
  font-size: 13px;
  color: #6b7280;
}

.cases-note {
  margin-top: 48px;
  padding: 32px;
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
  border-left: 4px solid #f59e0b;
}

.cases-note-text {
  font-size: 15px;
  color: #4b5563;
  line-height: 1.7;
  margin-bottom: 16px;
}

.cases-note-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.cases-note-links a {
  font-size: 14px;
  font-weight: 500;
}

/* Project 页 */
.project-background .background-block p {
  font-size: 15px;
  line-height: 1.75;
  color: #4b5563;
  margin-bottom: 16px;
}

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

.node-item {
  position: relative;
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.node-item::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 16px;
  bottom: 16px;
  width: 4px;
  background-color: #f59e0b;
  border-radius: 2px;
}

.node-item .node-title {
  font-size: 16px;
  font-weight: 600;
  color: #0b2239;
}

.node-item .node-desc {
  font-size: 14px;
  color: #4b5563;
  line-height: 1.65;
}

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

.note-item {
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.note-item .note-title {
  font-size: 16px;
  font-weight: 600;
  color: #0b2239;
}

.note-item .note-desc {
  font-size: 14px;
  color: #4b5563;
  line-height: 1.65;
}

.project-media {
  margin-top: 32px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #e5e0d6;
  background-color: #ffffff;
}

.project-media img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.sidebar .sidebar-card {
  position: sticky;
  top: 100px;
}

.status-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 12px;
  background-color: rgba(14, 124, 123, 0.12);
  color: #0e7c7b;
  margin-bottom: 8px;
}

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

.sidebar-links a {
  font-size: 14px;
  font-weight: 500;
}

/* Methods 页 */
.steps-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.step-item {
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
  padding: 20px;
  border-top: 4px solid #0e7c7b;
}

.step-item .step-title {
  font-size: 16px;
  font-weight: 600;
  color: #0b2239;
  margin-bottom: 8px;
}

.step-item .step-text {
  font-size: 14px;
  color: #4b5563;
  line-height: 1.65;
}

.method-figure {
  margin-top: 24px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #e5e0d6;
  background-color: #ffffff;
}

.method-figure img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

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

.keyword-list li {
  font-size: 13px;
  color: #4b5563;
  background-color: #f4f1ea;
  border: 1px solid #e5e0d6;
  border-radius: 4px;
  padding: 4px 12px;
}

/* Cooperation 页 */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}

.step-card {
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
  padding: 24px 20px;
  position: relative;
  border-top: 4px solid #f59e0b;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: #0b2239;
  color: #ffffff;
  font-size: 16px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 14px;
}

.step-card .step-title {
  font-size: 16px;
  font-weight: 600;
  color: #0b2239;
  margin-bottom: 8px;
}

.step-card .step-desc {
  font-size: 14px;
  color: #4b5563;
  line-height: 1.65;
}

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

.prep-item {
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
  padding: 20px;
  border-left: 4px solid #0e7c7b;
}

.prep-item .prep-title {
  font-size: 16px;
  font-weight: 600;
  color: #0b2239;
  margin-bottom: 8px;
}

.prep-item .prep-desc {
  font-size: 14px;
  color: #4b5563;
  line-height: 1.65;
}

.cooperation-media {
  margin-top: 40px;
}

.media-figure {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #e5e0d6;
  background-color: #ffffff;
}

.media-figure img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

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

.related-card {
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.related-card:hover {
  border-color: #f59e0b;
  box-shadow: 0 4px 12px rgba(11, 34, 57, 0.08);
}

.related-card .related-title {
  font-size: 16px;
  font-weight: 600;
  color: #0b2239;
}

.related-card .related-desc {
  font-size: 13px;
  color: #6b7280;
  line-height: 1.6;
}

/* FAQ 页 */
.faq-group {
  margin-bottom: 40px;
}

.faq-group-title {
  font-size: 22px;
  font-weight: 700;
  color: #0b2239;
  padding-bottom: 12px;
  border-bottom: 2px solid #e5e0d6;
  margin-bottom: 20px;
}

.faq-media-card {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 32px;
  align-items: center;
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
  overflow: hidden;
}

.faq-figure img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.faq-media-text {
  padding: 24px 24px 24px 0;
}

.faq-media-title {
  font-size: 20px;
  font-weight: 700;
  color: #0b2239;
  margin-bottom: 12px;
}

.faq-media-text p {
  font-size: 14px;
  color: #4b5563;
  line-height: 1.7;
  margin-bottom: 12px;
}

.faq-media-text a {
  font-weight: 500;
}

/* 404 页 */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
}

.error-panel {
  text-align: center;
  max-width: 480px;
  padding: 48px 32px;
  background-color: #ffffff;
  border: 1px solid #e5e0d6;
  border-radius: 8px;
}

.error-code {
  font-size: 64px;
  font-weight: 800;
  color: #f59e0b;
  line-height: 1;
  margin-bottom: 16px;
}

.error-title {
  font-size: 24px;
  font-weight: 700;
  color: #0b2239;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 15px;
  color: #4b5563;
  margin-bottom: 24px;
}

.error-link {
  display: inline-block;
  padding: 12px 28px;
  background-color: #0b2239;
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  border-radius: 6px;
  min-height: 44px;
  line-height: 20px;
}

.error-link:hover {
  background-color: #f59e0b;
  color: #0b2239;
}

/* ==========================================================================
   Responsive — 响应式断点
   ========================================================================== */

/* 1024px 断点 */
@media (max-width: 1024px) {
  .header-inner {
    padding: 0 20px;
  }

  .site-main {
    padding: 0 20px 48px;
  }

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

  .hero-title {
    font-size: 32px;
  }

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

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

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

  .page-layout,
  .layout-shell,
  .sidebar-left {
    gap: 24px;
  }

  .layout-sidebar-right .sidebar-content,
  .sidebar-left .sidebar-anchor {
    flex-basis: 260px;
  }
}

/* 768px 断点 */
@media (max-width: 768px) {
  .header-topbar {
    display: none;
  }

  .header-main {
    padding: 12px 0;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: #0b2239;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 8px 16px rgba(11, 34, 57, 0.24);
    display: block;
  }

  .site-nav .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 8px 20px 16px;
    gap: 0;
    margin: 0;
  }

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

  .nav-item.is-current .nav-link::after {
    display: none;
  }

  .nav-link {
    padding: 12px 12px;
    border-radius: 6px;
    font-size: 16px;
  }

  .site-main {
    padding: 0 16px 40px;
  }

  .site-main.inner-main {
    padding-top: 20px;
  }

  .breadcrumb {
    margin-bottom: 16px;
    font-size: 13px;
  }

  .page-header {
    margin-bottom: 24px;
    padding-bottom: 16px;
  }

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

  .page-description {
    font-size: 15px;
  }

  /* 首页布局切换 */
  .hero-section {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 32px 0 24px;
  }

  .hero-copy {
    order: 1;
  }

  .hero-media {
    order: 2;
  }

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

  .hero-description {
    font-size: 15px;
  }

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

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

  .featured-card {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .featured-info {
    padding: 24px;
  }

  .featured-media img {
    height: 200px;
  }

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

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

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

  .year-selector {
    overflow-x: auto;
  }

  .year-link {
    padding: 8px 18px;
    white-space: nowrap;
  }

  /* 内页布局切换 */
  .page-layout,
  .layout-shell,
  .sidebar-left {
    display: block;
  }

  .layout-sidebar-right .sidebar-content,
  .sidebar-left .sidebar-anchor {
    margin-top: 32px;
    flex-basis: auto;
  }

  /* 侧栏在手机端位于正文之后 */
  .sidebar-left .sidebar-anchor {
    order: 2;
    margin-top: 32px;
  }

  .sidebar-left .main-content {
    order: 1;
  }

  .sidebar-left {
    display: flex;
    flex-direction: column;
  }

  .page-layout {
    display: flex;
    flex-direction: column;
  }

  .page-layout .main-content {
    width: 100%;
  }

  .page-layout .sidebar-content {
    width: 100%;
    margin-top: 32px;
  }

  .anchor-panel {
    position: static;
  }

  .sidebar-card {
    position: static !important;
  }

  /* About */
  .about-intro {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

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

  /* Services */
  .audience-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  /* Cases */
  .year-tabs {
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .year-tab {
    white-space: nowrap;
  }

  .cases-list .case-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .case-media img {
    height: 160px;
  }

  /* Methods */
  .steps-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  /* Cooperation */
  .steps-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

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

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

  /* FAQ */
  .faq-media-card {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .faq-media-text {
    padding: 20px 20px 24px;
  }

  /* Footer */
  .footer-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    padding: 32px 16px 16px;
  }

  .footer-bottom {
    padding: 16px;
    flex-direction: column;
    text-align: center;
  }
}

/* 480px 断点 */
@media (max-width: 480px) {
  .brand-name {
    font-size: 20px;
  }

  .brand-tagline {
    font-size: 11px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

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

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

  .signal-card,
  .service-card,
  .case-item,
  .coop-step-card,
  .faq-teaser {
    padding: 16px;
  }

  .case-item {
    padding: 16px;
  }
}

/* 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;
  }
}