/* ==========================================================================
   51cg 官网 - 全站样式表
   域名：dgrhby.com
   设计方向：年轻内容风 / 亮蓝主色 / 琥珀橙辅助 / 轻阴影 / 8px圆角
   ========================================================================== */

/* ==========================================================================
   Base - 基础样式与重置
   ========================================================================== */

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: #334155;
  background-color: #F8FAFC;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: #2563EB;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #1D4ED8;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4 {
  color: #0F172A;
  line-height: 1.3;
  font-weight: 600;
}

h1 {
  font-size: 32px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

h4 {
  font-size: 16px;
}

p {
  margin-bottom: 12px;
}

/* 数字与英文字母使用等宽字体 */
time, .step-num, .step-order, .stage-number, .step-number,
.timeline-meta, .archive-meta, .error-code {
  font-family: 'SF Mono', 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
}

/* ==========================================================================
   Layout - 全站布局骨架
   ========================================================================== */

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

.site-home {
  background-color: #F8FAFC;
}

.site-inner {
  background-color: #F8FAFC;
}

.site-error {
  background-color: #F8FAFC;
}

/* 主容器宽度 */
.header-inner,
.site-main,
.footer-inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ==========================================================================
   Components - 页头与导航
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: #FFFFFF;
  border-bottom: 1px solid #E2E8F0;
  transition: box-shadow 0.25s ease;
}

.site-header.is-scrolled {
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  transition: height 0.25s ease;
}

.site-header.is-scrolled .header-inner {
  height: 56px;
}

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

.brand-name {
  font-size: 22px;
  font-weight: 700;
  color: #0F172A;
  letter-spacing: 0.02em;
}

.brand-name::after {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #F59E0B;
  margin-left: 4px;
  vertical-align: middle;
}

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

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

.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: #0F172A;
  margin: 3px 0;
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

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

.nav-list li {
  position: relative;
}

.nav-list a {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: #334155;
  border-radius: 6px;
  transition: color 0.2s ease, background-color 0.2s ease;
  min-height: 44px;
  line-height: 28px;
}

.nav-list a:hover {
  color: #2563EB;
  background-color: #F0F5FF;
}

.nav-list a.is-current {
  color: #2563EB;
  font-weight: 600;
}

.nav-list a.is-current::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background-color: #2563EB;
  border-radius: 1px;
}

/* ==========================================================================
   Components - 面包屑
   ========================================================================== */

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: 20px;
  padding-bottom: 4px;
  font-size: 14px;
  color: #64748B;
}

.breadcrumb a {
  color: #64748B;
  transition: color 0.2s ease;
}

.breadcrumb a:hover {
  color: #2563EB;
}

.breadcrumb-sep {
  color: #94A3B8;
  margin: 0 2px;
}

.breadcrumb-current {
  color: #0F172A;
  font-weight: 500;
}

/* ==========================================================================
   Components - 页面标题区
   ========================================================================== */

.page-header {
  padding-top: 28px;
  padding-bottom: 32px;
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 12px;
  line-height: 1.25;
}

.page-description {
  font-size: 16px;
  line-height: 1.7;
  color: #475569;
  max-width: 720px;
}

/* ==========================================================================
   Components - 按钮
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
}

.btn-primary {
  background-color: #2563EB;
  color: #FFFFFF;
}

.btn-primary:hover {
  background-color: #1D4ED8;
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: #FFFFFF;
  color: #2563EB;
  border-color: #BFDBFE;
}

.btn-secondary:hover {
  background-color: #F0F5FF;
  color: #1D4ED8;
  border-color: #93C5FD;
}

/* ==========================================================================
   Components - 通用区块标题
   ========================================================================== */

.section-heading {
  margin-bottom: 28px;
}

.section-heading h2 {
  font-size: 26px;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 10px;
  line-height: 1.3;
}

.section-heading p {
  font-size: 16px;
  color: #475569;
  max-width: 680px;
  margin-bottom: 0;
}

/* ==========================================================================
   Components - 文本链接
   ========================================================================== */

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  color: #2563EB;
  transition: color 0.2s ease, gap 0.2s ease;
}

.text-link:hover {
  color: #1D4ED8;
  gap: 10px;
}

.text-link span {
  font-size: 18px;
  line-height: 1;
}

/* ==========================================================================
   Components - 折叠问答
   ========================================================================== */

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

.faq-item {
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  background-color: #FFFFFF;
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.faq-item:hover {
  border-color: #BFDBFE;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 600;
  color: #0F172A;
  cursor: pointer;
  list-style: none;
  min-height: 44px;
  transition: color 0.2s ease;
}

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

.faq-item summary::after {
  content: '+';
  font-size: 22px;
  font-weight: 400;
  color: #2563EB;
  flex-shrink: 0;
  transition: transform 0.25s ease;
}

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

.faq-item summary:hover {
  color: #2563EB;
}

.faq-item .faq-answer,
.faq-item > p {
  padding: 0 20px 18px;
  font-size: 15px;
  line-height: 1.7;
  color: #475569;
}

.faq-item .faq-answer p {
  margin-bottom: 10px;
}

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

/* ==========================================================================
   Components - 相关链接
   ========================================================================== */

.related-links {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  padding: 32px 24px 40px;
  border-top: 1px solid #E2E8F0;
  margin-top: 48px;
}

.related-links-label {
  font-size: 14px;
  color: #64748B;
  font-weight: 500;
}

.related-links-item {
  font-size: 14px;
  font-weight: 500;
  color: #2563EB;
  padding: 4px 0;
}

.related-links-item:hover {
  color: #1D4ED8;
  text-decoration: underline;
}

/* ==========================================================================
   Components - 页脚
   ========================================================================== */

.site-footer {
  background-color: #0F172A;
  color: #94A3B8;
  padding-top: 56px;
  margin-top: 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  padding-bottom: 40px;
}

.footer-col h2 {
  font-size: 16px;
  font-weight: 600;
  color: #F1F5F9;
  margin-bottom: 16px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col ul a {
  display: inline-block;
  font-size: 14px;
  color: #94A3B8;
  line-height: 1.6;
  padding: 4px 0;
}

.footer-col ul a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  border-top: 1px solid rgba(148, 163, 184, 0.2);
  padding: 20px 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: #64748B;
  margin: 0;
}

/* ==========================================================================
   Pages - 首页
   ========================================================================== */

/* --- 首屏步骤区 --- */

.hero-steps {
  background-color: #FFFFFF;
  border-bottom: 1px solid #E2E8F0;
  padding: 56px 0 0;
}

.hero-grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-text {
  padding-bottom: 48px;
}

.eyebrow {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: #2563EB;
  background-color: #EFF6FF;
  border: 1px solid #BFDBFE;
  border-radius: 6px;
  padding: 4px 12px;
  margin-bottom: 20px;
}

.hero-text h1 {
  font-size: 36px;
  font-weight: 700;
  color: #0F172A;
  line-height: 1.25;
  margin-bottom: 18px;
}

.hero-lead {
  font-size: 17px;
  line-height: 1.8;
  color: #475569;
  margin-bottom: 28px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-media {
  position: relative;
}

.hero-figure {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
}

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

/* 步骤横条 */
.steps-strip {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid #E2E8F0;
}

.step-item {
  padding: 28px 24px 32px;
  border-left: 1px solid #E2E8F0;
  position: relative;
}

.step-item:first-child {
  border-left: none;
}

.step-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 24px;
  right: 24px;
  height: 3px;
  background-color: transparent;
  border-radius: 0 0 3px 3px;
  transition: background-color 0.25s ease;
}

.step-item:hover::before {
  background-color: #2563EB;
}

.step-num {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: #2563EB;
  background-color: #EFF6FF;
  border-radius: 4px;
  padding: 2px 10px;
  margin-bottom: 12px;
}

.step-item h3 {
  font-size: 17px;
  font-weight: 600;
  color: #0F172A;
  margin-bottom: 8px;
}

.step-item p {
  font-size: 14px;
  line-height: 1.6;
  color: #64748B;
  margin-bottom: 0;
}

/* --- 回应搜索词区域 --- */

.search-response {
  background-color: #F8FAFC;
  padding: 64px 0;
}

.response-grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.response-text h2 {
  font-size: 26px;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 14px;
}

.response-text p {
  font-size: 16px;
  line-height: 1.8;
  color: #475569;
  margin-bottom: 16px;
}

.response-text .text-link {
  margin-top: 8px;
}

.response-media figure {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 6px 24px rgba(15, 23, 42, 0.06);
}

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

/* --- 服务矩阵摘要 --- */

.service-summary {
  background-color: #FFFFFF;
  padding: 64px 0;
}

.service-card-grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.service-card {
  background-color: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 28px 22px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  border-color: #BFDBFE;
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background-color: #EFF6FF;
  margin-bottom: 16px;
}

.card-icon::before {
  content: '';
  width: 20px;
  height: 20px;
  border-radius: 4px;
  background-color: #2563EB;
  opacity: 0.85;
}

.service-card:nth-child(2) .card-icon::before {
  background-color: #F59E0B;
}

.service-card:nth-child(3) .card-icon::before {
  background-color: #10B981;
}

.service-card:nth-child(4) .card-icon::before {
  background-color: #8B5CF6;
}

.service-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: #0F172A;
  margin-bottom: 10px;
}

.service-card p {
  font-size: 14px;
  line-height: 1.7;
  color: #64748B;
  margin-bottom: 16px;
}

.service-card a {
  font-size: 14px;
  font-weight: 600;
  color: #2563EB;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.service-card a:hover {
  color: #1D4ED8;
}

/* --- 合作流程预览 --- */

.process-preview {
  background-color: #F8FAFC;
  padding: 64px 0;
}

.process-steps {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.process-step {
  background-color: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 24px 20px;
  position: relative;
  transition: box-shadow 0.2s ease;
}

.process-step:hover {
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.06);
}

.step-order {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: #2563EB;
  color: #FFFFFF;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 14px;
}

.process-step h3 {
  font-size: 16px;
  font-weight: 600;
  color: #0F172A;
  margin-bottom: 8px;
}

.process-step p {
  font-size: 14px;
  line-height: 1.6;
  color: #64748B;
  margin-bottom: 12px;
}

.process-step a {
  font-size: 13px;
  font-weight: 600;
  color: #2563EB;
}

/* --- 服务动态时间线 --- */

.dynamic-timeline {
  background-color: #FFFFFF;
  padding: 64px 0;
}

.timeline-list {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.timeline-list::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background-color: #E2E8F0;
}

.timeline-item {
  position: relative;
  padding-left: 36px;
  padding-bottom: 28px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: 3px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: #2563EB;
  border: 2px solid #FFFFFF;
  box-shadow: 0 0 0 2px #BFDBFE;
}

.timeline-item time {
  display: block;
  font-size: 13px;
  color: #64748B;
  margin-bottom: 6px;
}

.timeline-item h3 {
  font-size: 17px;
  font-weight: 600;
  color: #0F172A;
  margin-bottom: 6px;
}

.timeline-item p {
  font-size: 14px;
  line-height: 1.7;
  color: #475569;
  margin-bottom: 8px;
}

.timeline-item a {
  font-size: 14px;
  font-weight: 600;
  color: #2563EB;
}

/* --- 常见问题精选 --- */

.faq-preview {
  background-color: #F8FAFC;
  padding: 64px 0;
}

.faq-preview .faq-list {
  max-width: 1200px;
  margin: 0 auto 24px;
  padding: 0 24px;
}

.faq-preview .text-link {
  display: flex;
  justify-content: center;
  margin-top: 8px;
}

/* ==========================================================================
   Pages - 服务矩阵页
   ========================================================================== */

.layout-shell {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  align-items: start;
}

.category-index {
  background-color: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 24px 20px;
  position: sticky;
  top: 96px;
}

.aside-title {
  font-size: 16px;
  font-weight: 600;
  color: #0F172A;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid #E2E8F0;
}

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

.category-index-list a {
  display: block;
  padding: 10px 12px;
  font-size: 15px;
  font-weight: 500;
  color: #334155;
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease;
  min-height: 44px;
  line-height: 24px;
}

.category-index-list a:hover {
  background-color: #F0F5FF;
  color: #2563EB;
}

.aside-note {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid #E2E8F0;
  font-size: 13px;
  line-height: 1.6;
  color: #64748B;
}

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

.service-panel {
  background-color: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 32px 28px;
}

.service-panel-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid #E2E8F0;
}

.service-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background-color: #EFF6FF;
  flex-shrink: 0;
}

.service-icon::before {
  content: '';
  width: 18px;
  height: 18px;
  border-radius: 4px;
  background-color: #2563EB;
}

.service-panel:nth-child(2) .service-icon::before {
  background-color: #F59E0B;
}

.service-panel:nth-child(3) .service-icon::before {
  background-color: #10B981;
}

.service-panel:nth-child(4) .service-icon::before {
  background-color: #8B5CF6;
}

.service-panel-header h2 {
  font-size: 22px;
  font-weight: 600;
  color: #0F172A;
}

.service-panel-body p {
  font-size: 15px;
  line-height: 1.8;
  color: #475569;
  margin-bottom: 14px;
}

.service-panel-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: #0F172A;
  margin-top: 20px;
  margin-bottom: 10px;
}

.service-panel-body ul {
  list-style: none;
  margin-bottom: 14px;
}

.service-panel-body ul li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.7;
  color: #475569;
  margin-bottom: 6px;
}

.service-panel-body ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #2563EB;
}

.service-matrix-figure {
  margin-top: 8px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #E2E8F0;
}

.service-matrix-figure img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.service-matrix-figure figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: #64748B;
  background-color: #F8FAFC;
  border-top: 1px solid #E2E8F0;
}

/* ==========================================================================
   Pages - 交付方式页
   ========================================================================== */

.delivery-timeline {
  background-color: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 32px 28px;
  margin-bottom: 32px;
}

.delivery-timeline > h2 {
  font-size: 24px;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 8px;
}

.section-lead {
  font-size: 15px;
  color: #475569;
  margin-bottom: 32px;
  max-width: 640px;
}

.timeline-stages {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.timeline-stages::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: #E2E8F0;
}

.timeline-stage {
  position: relative;
  padding-left: 64px;
  padding-bottom: 36px;
}

.timeline-stage:last-child {
  padding-bottom: 8px;
}

.timeline-stage::before {
  content: '';
  position: absolute;
  left: 19px;
  top: 24px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: #2563EB;
  border: 2px solid #FFFFFF;
  box-shadow: 0 0 0 2px #BFDBFE;
}

.stage-header {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.stage-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: #2563EB;
  color: #FFFFFF;
  font-size: 15px;
  font-weight: 700;
}

.stage-header h3 {
  font-size: 19px;
  font-weight: 600;
  color: #0F172A;
}

.stage-period {
  font-size: 13px;
  color: #64748B;
  background-color: #F1F5F9;
  border-radius: 4px;
  padding: 2px 10px;
}

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

.stage-detail {
  background-color: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 16px 18px;
}

.stage-detail h4 {
  font-size: 14px;
  font-weight: 600;
  color: #2563EB;
  margin-bottom: 6px;
}

.stage-detail p {
  font-size: 14px;
  line-height: 1.7;
  color: #475569;
  margin-bottom: 0;
}

.timeline-media {
  margin-top: 24px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #E2E8F0;
}

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

.timeline-media figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: #64748B;
  background-color: #F8FAFC;
  border-top: 1px solid #E2E8F0;
}

/* 需求确认说明 */
.requirement-note {
  background-color: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 32px 28px;
}

.requirement-note h2 {
  font-size: 24px;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 20px;
}

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

.requirement-note-content p {
  font-size: 15px;
  line-height: 1.8;
  color: #475569;
  margin-bottom: 0;
}

/* ==========================================================================
   Pages - 合作指南页
   ========================================================================== */

.prepare-checklist {
  background-color: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 32px 28px;
  margin-bottom: 32px;
}

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

.compare-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  padding: 20px;
  background-color: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  align-items: start;
}

.compare-dim h3 {
  font-size: 16px;
  font-weight: 600;
  color: #0F172A;
  position: relative;
  padding-left: 20px;
}

.compare-dim h3::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background-color: #2563EB;
}

.compare-desc p {
  font-size: 15px;
  line-height: 1.7;
  color: #475569;
  margin-bottom: 8px;
}

.compare-desc p:last-child {
  margin-bottom: 0;
}

/* 合作评估路径 */
.evaluation-path {
  background-color: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 32px 28px;
  margin-bottom: 32px;
}

.evaluation-figure {
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 24px;
  border: 1px solid #E2E8F0;
}

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

.evaluation-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: #64748B;
  background-color: #F8FAFC;
  border-top: 1px solid #E2E8F0;
}

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

.path-step {
  background-color: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 20px 16px;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: #F59E0B;
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 12px;
}

.path-step h3 {
  font-size: 16px;
  font-weight: 600;
  color: #0F172A;
  margin-bottom: 8px;
}

.path-step p {
  font-size: 14px;
  line-height: 1.6;
  color: #475569;
  margin-bottom: 0;
}

.path-step .step-note {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid #E2E8F0;
  font-size: 13px;
  color: #64748B;
}

/* 相关指南 */
.related-guides {
  background-color: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 32px 28px;
}

.guide-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.guide-links a {
  display: inline-block;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 500;
  color: #2563EB;
  background-color: #F0F5FF;
  border: 1px solid #BFDBFE;
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease;
  min-height: 44px;
  line-height: 22px;
}

.guide-links a:hover {
  background-color: #2563EB;
  color: #FFFFFF;
}

/* ==========================================================================
   Pages - 常见问题页
   ========================================================================== */

.faq-group {
  background-color: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 32px 28px;
  margin-bottom: 32px;
}

.faq-group h2 {
  font-size: 22px;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid #E2E8F0;
}

.faq-media-note {
  background-color: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.faq-figure {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #E2E8F0;
}

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

.faq-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: #64748B;
  background-color: #F8FAFC;
  border-top: 1px solid #E2E8F0;
}

.faq-media-text p {
  font-size: 15px;
  line-height: 1.8;
  color: #475569;
  margin-bottom: 12px;
}

.faq-media-text p:last-child {
  margin-bottom: 0;
}

/* 视觉隐藏 */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   Pages - 服务动态页
   ========================================================================== */

.timeline-section {
  background-color: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 32px 28px;
  margin-bottom: 32px;
}

/* 最新动态 */
.latest-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 20px;
  padding: 20px;
  background-color: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  transition: box-shadow 0.2s ease;
}

.timeline-item:hover {
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.05);
}

.timeline-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.timeline-meta time {
  font-size: 14px;
  color: #64748B;
}

.timeline-tag {
  display: inline-block;
  width: fit-content;
  font-size: 12px;
  font-weight: 600;
  color: #2563EB;
  background-color: #EFF6FF;
  border-radius: 4px;
  padding: 2px 8px;
}

.timeline-item h3 {
  font-size: 17px;
  font-weight: 600;
  color: #0F172A;
  margin-bottom: 6px;
}

.timeline-item p {
  font-size: 14px;
  line-height: 1.7;
  color: #475569;
  margin-bottom: 8px;
}

.timeline-item a {
  font-size: 14px;
  font-weight: 600;
  color: #2563EB;
}

/* 近期专题 */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.featured-card {
  background-color: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 24px 22px;
  transition: box-shadow 0.2s ease;
}

.featured-card:hover {
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.06);
}

.featured-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: #0F172A;
  margin-bottom: 10px;
}

.featured-card p {
  font-size: 14px;
  line-height: 1.7;
  color: #475569;
  margin-bottom: 14px;
}

.featured-status {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  color: #F59E0B;
  background-color: #FEF3C7;
  border-radius: 4px;
  padding: 3px 10px;
}

/* 历史归档 */
.archive-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.archive-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid #E2E8F0;
}

.archive-item:last-child {
  border-bottom: none;
}

.archive-meta time {
  font-size: 14px;
  color: #64748B;
}

.archive-content h3 {
  font-size: 16px;
  font-weight: 600;
  color: #0F172A;
  margin-bottom: 6px;
}

.archive-content p {
  font-size: 14px;
  line-height: 1.7;
  color: #475569;
  margin-bottom: 0;
}

/* 未来计划 */
.future-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.future-item {
  background-color: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 20px 22px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
}

.future-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: #0F172A;
  margin-bottom: 6px;
}

.future-item p {
  font-size: 14px;
  line-height: 1.6;
  color: #475569;
  margin-bottom: 0;
}

.future-time {
  grid-row: span 2;
  font-size: 13px;
  color: #2563EB;
  background-color: #EFF6FF;
  border-radius: 4px;
  padding: 4px 10px;
  white-space: nowrap;
}

/* 时间线配图 */
.timeline-figure {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #E2E8F0;
  margin-bottom: 32px;
}

.timeline-figure img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.timeline-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: #64748B;
  background-color: #F8FAFC;
  border-top: 1px solid #E2E8F0;
}

/* ==========================================================================
   Pages - 关于我们页
   ========================================================================== */

.brand-position {
  background-color: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 32px 28px;
  margin-bottom: 32px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}

.position-text h2 {
  font-size: 24px;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 16px;
}

.position-text p {
  font-size: 15px;
  line-height: 1.8;
  color: #475569;
  margin-bottom: 14px;
}

.position-text .text-link {
  margin-top: 8px;
}

.position-figure {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #E2E8F0;
}

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

.position-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: #64748B;
  background-color: #F8FAFC;
  border-top: 1px solid #E2E8F0;
}

/* 服务理念 */
.service-belief {
  background-color: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 32px 28px;
  margin-bottom: 32px;
}

.service-belief > h2 {
  font-size: 24px;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 24px;
}

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

.belief-item {
  background-color: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 24px 20px;
}

.belief-item h3 {
  font-size: 17px;
  font-weight: 600;
  color: #0F172A;
  margin-bottom: 10px;
  position: relative;
  padding-left: 20px;
}

.belief-item h3::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background-color: #2563EB;
}

.belief-item:nth-child(2) h3::before {
  background-color: #F59E0B;
}

.belief-item:nth-child(3) h3::before {
  background-color: #10B981;
}

.belief-item p {
  font-size: 14px;
  line-height: 1.7;
  color: #475569;
  margin-bottom: 0;
}

/* 内容边界 */
.content-boundary {
  background-color: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 32px 28px;
  margin-bottom: 32px;
}

.content-boundary > h2 {
  font-size: 24px;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 24px;
}

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

.boundary-col {
  background-color: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 24px 22px;
}

.boundary-col h3 {
  font-size: 17px;
  font-weight: 600;
  color: #0F172A;
  margin-bottom: 14px;
}

.boundary-col ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.boundary-col ul li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: #475569;
}

.boundary-col ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #2563EB;
}

.boundary-col:nth-child(2) ul li::before {
  background-color: #F59E0B;
}

/* ==========================================================================
   Pages - 404错误页
   ========================================================================== */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 48px 24px;
}

.error-panel {
  text-align: center;
  max-width: 560px;
  background-color: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 48px 40px;
}

.error-code {
  font-size: 64px;
  font-weight: 700;
  color: #2563EB;
  line-height: 1;
  margin-bottom: 16px;
}

.error-panel h1 {
  font-size: 26px;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 14px;
}

.error-desc {
  font-size: 15px;
  color: #475569;
  margin-bottom: 28px;
}

.error-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

/* ==========================================================================
   Responsive - 响应式
   ========================================================================== */

/* --- 平板断点 --- */
@media (max-width: 1024px) {
  .service-card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

  .hero-media {
    order: -1;
  }

  .hero-figure img {
    height: 300px;
  }

  .hero-text {
    padding-bottom: 32px;
  }

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

  .step-item {
    border-left: none;
    border-top: 1px solid #E2E8F0;
  }

  .step-item:nth-child(1),
  .step-item:nth-child(2) {
    border-top: none;
  }

  .step-item:nth-child(even) {
    border-left: 1px solid #E2E8F0;
  }

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

  .category-index {
    position: static;
    top: auto;
  }

  .category-index-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .stage-content {
    grid-template-columns: 1fr;
  }

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

  .brand-position {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

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

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

/* --- 手机断点 --- */
@media (max-width: 768px) {
  .header-inner {
    height: 64px;
  }

  .site-header.is-scrolled .header-inner {
    height: 56px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-list {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background-color: #FFFFFF;
    padding: 16px 24px 32px;
    overflow-y: auto;
    z-index: 999;
  }

  .site-header.is-scrolled .nav-list {
    top: 56px;
  }

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

  .nav-list li {
    border-bottom: 1px solid #E2E8F0;
  }

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

  .nav-list a {
    padding: 14px 8px;
    font-size: 16px;
    min-height: 48px;
    line-height: 20px;
    border-radius: 0;
  }

  .nav-list a.is-current::after {
    left: 8px;
    right: auto;
    width: 3px;
    height: 20px;
    top: 50%;
    bottom: auto;
    transform: translateY(-50%);
  }

  /* 首页 */
  .hero-steps {
    padding-top: 32px;
  }

  .hero-grid {
    padding: 0 20px;
  }

  .hero-text h1 {
    font-size: 30px;
  }

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

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

  .steps-strip {
    grid-template-columns: 1fr;
    padding: 0 20px;
  }

  .step-item {
    border-left: none;
    border-top: 1px solid #E2E8F0;
    padding: 20px 0;
  }

  .step-item:first-child {
    border-top: none;
  }

  .step-item:nth-child(even) {
    border-left: none;
  }

  /* 通用区块 */
  .search-response,
  .service-summary,
  .process-preview,
  .dynamic-timeline,
  .faq-preview {
    padding: 40px 0;
  }

  .response-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 0 20px;
  }

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

  .service-card-grid {
    grid-template-columns: 1fr;
    padding: 0 20px;
  }

  .process-steps {
    grid-template-columns: 1fr;
    padding: 0 20px;
  }

  .timeline-list {
    padding: 0 20px;
  }

  .faq-preview .faq-list {
    padding: 0 20px;
  }

  /* 内页通用 */
  .header-inner,
  .site-main,
  .footer-inner {
    padding-left: 20px;
    padding-right: 20px;
  }

  .breadcrumb {
    padding-top: 16px;
  }

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

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

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

  /* 服务矩阵 */
  .layout-shell {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

  .content-panels {
    gap: 16px;
  }

  .service-panel {
    padding: 24px 20px;
  }

  .service-panel-header {
    flex-wrap: wrap;
  }

  .service-panel-body ul li {
    font-size: 14px;
  }

  .service-matrix-figure img {
    height: 180px;
  }

  /* 交付方式 */
  .delivery-timeline,
  .requirement-note {
    padding: 24px 20px;
  }

  .timeline-stages::before {
    left: 16px;
  }

  .timeline-stage {
    padding-left: 44px;
  }

  .timeline-stage::before {
    left: 11px;
  }

  .stage-header {
    gap: 8px;
  }

  .stage-header h3 {
    font-size: 17px;
  }

  .stage-period {
    font-size: 12px;
  }

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

  .stage-detail {
    padding: 14px 16px;
  }

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

  .requirement-note-content {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* 合作指南 */
  .prepare-checklist,
  .evaluation-path,
  .related-guides {
    padding: 24px 20px;
  }

  .compare-item {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 16px;
  }

  .compare-dim h3 {
    padding-left: 0;
  }

  .compare-dim h3::before {
    display: none;
  }

  .evaluation-figure img {
    height: 180px;
  }

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

  .guide-links {
    flex-direction: column;
  }

  .guide-links a {
    text-align: center;
  }

  /* 常见问题 */
  .faq-group {
    padding: 24px 20px;
  }

  .faq-item summary {
    padding: 14px 16px;
    font-size: 15px;
  }

  .faq-item .faq-answer,
  .faq-item > p {
    padding: 0 16px 16px;
    font-size: 14px;
  }

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

  .faq-figure img {
    height: 180px;
  }

  /* 服务动态 */
  .timeline-section {
    padding: 24px 20px;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 16px;
  }

  .timeline-meta {
    flex-direction: row;
    align-items: center;
    gap: 12px;
  }

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

  .archive-item {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 16px 0;
  }

  .future-item {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .future-time {
    grid-row: auto;
    width: fit-content;
  }

  .timeline-figure img {
    height: 180px;
  }

  /* 关于我们 */
  .brand-position,
  .service-belief,
  .content-boundary {
    padding: 24px 20px;
  }

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

  .position-figure img {
    height: 200px;
  }

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

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

  /* 404 */
  .error-main {
    min-height: 50vh;
    padding: 32px 20px;
  }

  .error-panel {
    padding: 36px 24px;
  }

  .error-code {
    font-size: 48px;
  }

  /* 页脚 */
  .site-footer {
    padding-top: 40px;
  }

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

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

  .related-links {
    padding: 24px 20px 32px;
    gap: 12px;
  }
}

/* --- 小屏手机断点 --- */
@media (max-width: 480px) {
  .hero-text h1 {
    font-size: 26px;
  }

  .hero-actions {
    flex-direction: column;
  }

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

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

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

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