/* ==========================================================================
   51吃瓜网在线 grabinter.com 全站样式
   视觉方向：政府信息风 · 深藏青 + 朱红 · 高信息密度
   ========================================================================== */

/* ==========================================================================
   Base — 基础变量、重置、字体、通用元素
   ========================================================================== */

:root {
  --primary: #1f3864;
  --primary-dark: #16294a;
  --primary-light: #2a4a80;
  --accent: #a71e22;
  --accent-dark: #8a181c;
  --bg: #f6f6f2;
  --surface: #ffffff;
  --text: #1d2129;
  --muted: #6b7280;
  --border: #d9dce1;
  --border-light: #e8eaee;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-heading: "Source Han Sans SC", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", var(--font-sans);
  --container-width: 1200px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --transition: 0.2s ease;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition), border-color var(--transition), background-color var(--transition);
}

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  color: var(--text);
  line-height: 1.4;
  font-weight: 600;
}

h1 {
  font-size: 36px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

p {
  margin-bottom: 1em;
}

p:last-child {
  margin-bottom: 0;
}

figure {
  margin: 0;
}

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

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

/* ==========================================================================
   Layout — 全站统一骨架
   ========================================================================== */

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg);
}

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

/* ---------- 页头 ---------- */

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

.version-bar {
  background-color: var(--primary);
  color: rgba(255, 255, 255, 0.85);
  font-size: 12px;
  line-height: 1.4;
  padding: 6px 0;
}

.version-bar .nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.version-label {
  color: rgba(255, 255, 255, 0.9);
  letter-spacing: 0.02em;
}

.version-keyword {
  color: rgba(255, 255, 255, 0.7);
  font-size: 12px;
}

.main-nav {
  background-color: var(--surface);
  position: relative;
}

.nav-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 64px;
}

.brand-logo {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  white-space: nowrap;
  line-height: 1.3;
  padding: 8px 0;
}

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

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-list li {
  margin: 0;
}

.nav-link {
  display: inline-block;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  border-radius: var(--radius-sm);
  line-height: 1.5;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--primary);
  background-color: rgba(31, 56, 100, 0.06);
}

.nav-link.is-current {
  color: var(--accent);
  background-color: rgba(167, 30, 34, 0.06);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex-shrink: 0;
}

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

/* ---------- 面包屑 ---------- */

.breadcrumb {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 20px 24px 0;
  font-size: 13px;
  color: var(--muted);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

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

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

.breadcrumb-sep {
  color: var(--border);
  margin: 0 2px;
}

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

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

.breadcrumb-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 10px 24px;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
}

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

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

.breadcrumb-list li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--border);
}

/* ---------- 页面标题区 ---------- */

.page-header {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 24px;
  border-bottom: 2px solid var(--primary);
}

.page-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
}

.page-title-area {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border-light);
}

.page-title-area .page-intro,
.page-title-area .page-title-desc,
.page-title-area .article-meta {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 20px 24px;
}

.page-title-area .page-title-desc,
.page-title-area .page-intro {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.page-title-block {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border-light);
}

.title-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 20px 24px;
}

.title-description,
.page-subtitle {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
  max-width: 72ch;
}

/* ---------- 内页主容器 ---------- */

.inner-main {
  padding-bottom: 64px;
}

.layout-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.layout-with-aside {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  align-items: start;
}

/* ---------- 页脚 ---------- */

.site-footer {
  background-color: var(--primary);
  color: rgba(255, 255, 255, 0.8);
  margin-top: auto;
  flex-shrink: 0;
}

.footer-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

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

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.6;
  display: inline-block;
  padding: 2px 0;
}

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

.footer-version {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.6;
  margin-top: 8px;
}

.footer-brand {
  font-size: 16px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 8px;
}

.footer-copyright {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.45);
  line-height: 1.6;
}

/* ---------- 相关链接导航（通用） ---------- */

.related-links {
  max-width: var(--container-width);
  margin: 48px auto 0;
  padding: 20px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-right: 8px;
}

.related-links-item {
  display: inline-block;
  padding: 6px 16px;
  font-size: 14px;
  color: var(--primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background-color: var(--surface);
}

.related-links-item:hover {
  border-color: var(--primary);
  background-color: rgba(31, 56, 100, 0.04);
}

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

/* ---------- 按钮 ---------- */

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  line-height: 1.4;
  cursor: pointer;
  transition: background-color var(--transition), border-color var(--transition), color var(--transition);
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #ffffff;
}

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

.btn-secondary:hover {
  background-color: rgba(31, 56, 100, 0.06);
  color: var(--primary-dark);
}

/* ---------- 区块标题 ---------- */

.section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 12px;
}

.section-intro {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.8;
  max-width: 72ch;
  margin-bottom: 32px;
}

/* ---------- FAQ 条目 ---------- */

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background-color: var(--surface);
  margin-bottom: 12px;
  transition: border-color var(--transition);
}

.faq-item:hover {
  border-color: var(--primary);
}

.faq-item summary {
  cursor: pointer;
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.6;
  list-style: none;
  position: relative;
  padding-right: 44px;
  display: flex;
  align-items: center;
  min-height: 48px;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  font-weight: 400;
  color: var(--muted);
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.faq-answer {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
  border-top: 1px solid var(--border-light);
  padding-top: 14px;
  margin-top: 0;
}

/* ---------- 表格 ---------- */

.role-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.role-table thead th {
  background-color: var(--primary);
  color: #ffffff;
  text-align: left;
  padding: 14px 16px;
  font-weight: 600;
  font-size: 14px;
  line-height: 1.5;
  border: 1px solid var(--primary);
}

.role-table tbody td {
  padding: 14px 16px;
  border: 1px solid var(--border);
  background-color: var(--surface);
  line-height: 1.7;
  vertical-align: top;
}

.role-table tbody tr:nth-child(even) td {
  background-color: #fafaf8;
}

/* ---------- 侧栏（通用） ---------- */

.sidebar {
  min-width: 0;
}

.sidebar-card,
.sidebar-block,
.aside-card,
.sidebar-inner {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
}

.sidebar-title,
.aside-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary);
}

.sidebar-links li,
.aside-links li {
  margin-bottom: 4px;
}

.sidebar-links a,
.aside-links a {
  display: block;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--text);
  border-left: 3px solid transparent;
  line-height: 1.6;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.sidebar-links a:hover,
.aside-links a:hover {
  color: var(--primary);
  background-color: rgba(31, 56, 100, 0.04);
  border-left-color: var(--accent);
}

/* ---------- 图片通用 ---------- */

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

figcaption {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
  padding: 10px 4px 0;
}

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

/* ---------- 首屏 Hero ---------- */

.hero-section {
  background-color: var(--primary);
  color: #ffffff;
}

.hero-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 64px 24px;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 48px;
  align-items: center;
}

.hero-title {
  font-size: 36px;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.35;
  margin-bottom: 16px;
}

.hero-subtitle {
  font-size: 18px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 12px;
  line-height: 1.6;
}

.hero-desc {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.8;
  margin-bottom: 28px;
  max-width: 52ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 20px;
}

.hero-actions .btn-primary {
  background-color: var(--accent);
  border-color: var(--accent);
}

.hero-actions .btn-primary:hover {
  background-color: var(--accent-dark);
  border-color: var(--accent-dark);
}

.hero-actions .btn-secondary {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.6);
}

.hero-actions .btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: #ffffff;
  color: #ffffff;
}

.hero-note {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.6;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.hero-figure {
  margin: 0;
}

.hero-figure img {
  border-radius: var(--radius-lg);
  width: 100%;
  height: auto;
  object-fit: cover;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
}

/* ---------- 通用区块 ---------- */

.section-block {
  padding: 64px 0;
}

.section-block:nth-child(even) {
  background-color: var(--surface);
}

/* ---------- 服务矩阵 ---------- */

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

.matrix-grid .service-item {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.matrix-grid .service-item:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 16px rgba(31, 56, 100, 0.08);
}

.matrix-grid .item-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: var(--primary);
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-family: var(--font-heading);
}

.matrix-grid .item-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1.5;
}

.matrix-grid .item-scope {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 14px;
}

.matrix-grid .item-deliverable {
  font-size: 13px;
  color: var(--primary);
  line-height: 1.6;
  padding-top: 12px;
  border-top: 1px solid var(--border-light);
}

/* ---------- 服务场景示例 ---------- */

.scenario-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 48px;
  align-items: center;
}

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

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

.scenario-item {
  padding: 20px 24px;
  border-left: 4px solid var(--accent);
  background-color: var(--surface);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  border: 1px solid var(--border);
  border-left-width: 4px;
  border-left-color: var(--accent);
}

.scenario-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.scenario-desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ---------- 工作方式预览 ---------- */

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

.workflow-steps .step-item {
  position: relative;
  padding: 24px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  counter-increment: step;
}

.workflow-steps .step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: var(--accent);
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  font-family: var(--font-heading);
}

.workflow-steps .step-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.workflow-steps .step-desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 0;
}

.link-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  padding: 8px 0;
  border-bottom: 2px solid transparent;
}

.link-more:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------- 行业方向 ---------- */

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

.industry-item {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition);
}

.industry-item:hover {
  border-color: var(--primary);
}

.industry-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-light);
}

.industry-desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 16px;
  flex: 1;
}

.link-entry {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.link-entry:hover {
  color: var(--primary);
}

/* ---------- 洞察摘要 ---------- */

.insight-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border);
}

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

.insight-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.insight-title a {
  color: var(--text);
}

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

.insight-excerpt {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 0;
  max-width: 72ch;
}

/* ---------- FAQ 摘要 ---------- */

.faq-preview-list {
  max-width: 860px;
}

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

/* ---------- 主内容区 ---------- */

.main-content {
  min-width: 0;
  max-width: 100%;
}

/* ==========================================================================
   Pages — 业务服务 services.html
   ========================================================================== */

.page-services .layout-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  padding-top: 32px;
  align-items: start;
}

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

.service-overview h2 {
  font-size: 20px;
  margin-bottom: 12px;
}

.service-overview p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 0;
}

.service-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 40px;
}

.service-list .service-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 20px;
  padding: 24px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition);
}

.service-list .service-item:hover {
  border-color: var(--primary);
}

.service-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: var(--primary);
  color: #ffffff;
  font-size: 18px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
}

.service-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.5;
}

.service-scope {
  font-size: 14px;
  color: var(--text);
  line-height: 1.7;
  margin-bottom: 8px;
}

.service-deliverable {
  font-size: 13px;
  color: var(--primary);
  font-weight: 500;
  line-height: 1.6;
  margin-bottom: 8px;
  padding: 6px 12px;
  background-color: rgba(31, 56, 100, 0.05);
  border-radius: var(--radius-sm);
  display: inline-block;
}

.service-boundary {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 0;
}

.service-figure {
  margin: 32px 0 40px;
}

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

.service-boundary {
  padding: 28px 24px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.service-boundary h2 {
  font-size: 20px;
  margin-bottom: 12px;
}

.service-boundary p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 8px;
}

.service-boundary p:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   Pages — 行业方案 solutions.html
   ========================================================================== */

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

.intro-wrap {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px;
}

.lead-text {
  font-size: 17px;
  color: var(--text);
  line-height: 1.8;
  font-weight: 500;
  margin-bottom: 12px;
  max-width: 72ch;
}

.intro-wrap p:not(.lead-text) {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
  max-width: 72ch;
  margin-bottom: 0;
}

.solution-industry-block {
  padding: 56px 0;
  border-bottom: 1px solid var(--border-light);
}

.solution-industry-block:nth-of-type(even) {
  background-color: var(--surface);
}

.solution-industry-block .industry-grid {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 48px;
  align-items: center;
}

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

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

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

.industry-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: var(--accent);
  color: #ffffff;
  font-size: 16px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-family: var(--font-heading);
}

.industry-content h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 20px;
  line-height: 1.4;
}

.industry-detail {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.industry-detail h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 4px;
}

.industry-detail p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 0;
}

/* ---------- 方案选择指引 ---------- */

.selection-guide {
  background-color: var(--primary);
  padding: 56px 0;
}

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

.guide-inner h2 {
  font-size: 24px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
}

.guide-inner > p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 72ch;
}

.guide-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.guide-steps li {
  background-color: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.guide-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: var(--accent);
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  font-family: var(--font-heading);
}

.guide-step-text {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.7;
}

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

.guide-link {
  display: inline-block;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 600;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius-sm);
}

.guide-link:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: #ffffff;
  color: #ffffff;
}

/* ==========================================================================
   Pages — 交付体系 delivery.html
   ========================================================================== */

.delivery-timeline,
.role-table-section,
.media-section,
.boundary-note {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 56px 24px 0;
}

.timeline-container,
.role-table-container,
.media-container,
.boundary-container {
  max-width: 860px;
  margin: 0 auto;
}

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

.timeline-list::before {
  content: "";
  position: absolute;
  left: 27px;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--border);
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 20px;
  padding: 0 0 40px;
}

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

.timeline-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background-color: var(--primary);
  color: #ffffff;
  font-size: 18px;
  font-weight: 700;
  border-radius: 50%;
  z-index: 1;
  font-family: var(--font-heading);
  box-shadow: 0 0 0 4px var(--bg);
}

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

.timeline-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.timeline-content p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 12px;
}

.deliverable-label {
  display: inline-block;
  font-size: 13px;
  color: var(--primary);
  background-color: rgba(31, 56, 100, 0.06);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  line-height: 1.5;
  font-weight: 500;
}

.role-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

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

.boundary-note {
  padding-bottom: 56px;
}

.boundary-container {
  padding: 28px 32px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.boundary-container h2 {
  font-size: 20px;
  margin-bottom: 12px;
}

.boundary-container p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 0;
}

/* ==========================================================================
   Pages — 洞察 insights.html
   ========================================================================== */

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 13px;
  color: var(--muted);
}

.meta-author,
.meta-version {
  display: inline-flex;
  align-items: center;
}

.meta-author::before,
.meta-version::before {
  content: "";
  width: 4px;
  height: 4px;
  background-color: var(--accent);
  border-radius: 50%;
  margin-right: 8px;
}

.article-body {
  min-width: 0;
  max-width: 72ch;
}

.article-figure {
  margin-bottom: 28px;
}

.article-hero-image {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.article-lead {
  font-size: 17px;
  line-height: 1.9;
  color: var(--text);
  margin-bottom: 32px;
  font-weight: 500;
}

.article-section {
  margin-bottom: 40px;
  padding-top: 8px;
}

.article-section .section-title {
  font-size: 22px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary);
  margin-bottom: 20px;
}

.article-section p {
  font-size: 15px;
  color: var(--text);
  line-height: 1.9;
  margin-bottom: 16px;
}

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

/* ==========================================================================
   Pages — 关于 about.html
   ========================================================================== */

.positioning-block,
.working-method-block,
.principle-block,
.boundary-block {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 0;
}

.block-heading {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary);
  position: relative;
}

.positioning-content {
  max-width: 72ch;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px 32px;
}

.positioning-content p {
  font-size: 15px;
  color: var(--text);
  line-height: 1.9;
  margin-bottom: 12px;
}

.positioning-content p:last-child {
  margin-bottom: 0;
}

.method-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 48px;
  align-items: start;
}

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

.method-text > p {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 24px;
}

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

.role-item {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  border-left: 4px solid var(--primary);
}

.role-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.role-item p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 0;
}

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

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

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

.principle-item:hover {
  border-color: var(--primary);
}

.principle-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-light);
}

.principle-item p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 0;
}

.boundary-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  padding-bottom: 48px;
}

.boundary-item {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  border-left: 4px solid var(--accent);
}

.boundary-item h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.boundary-item p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ==========================================================================
   Pages — 联系 contact.html
   ========================================================================== */

.page-contact .layout-shell {
  padding-top: 32px;
}

.page-contact .layout-shell .page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  align-items: start;
}

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

.applicable-scenarios,
.contact-steps,
.material-list,
.faq-guide {
  margin-bottom: 48px;
}

.applicable-scenarios h2,
.contact-steps h2,
.material-list h2,
.faq-guide h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary);
}

.applicable-scenarios .section-intro,
.contact-steps .section-intro,
.material-list .section-intro,
.faq-guide .section-intro {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 24px;
  max-width: 72ch;
}

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

.scenario-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  min-height: 160px;
}

.scenario-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-light);
}

.scenario-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 0;
}

.steps-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  counter-reset: contact-step;
}

.steps-list .step-item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 20px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  align-items: flex-start;
}

.steps-list .step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background-color: var(--primary);
  color: #ffffff;
  font-size: 17px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
}

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

.step-content h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.step-content p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 0;
}

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

.material-item {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.material-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: var(--accent);
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  font-family: var(--font-heading);
}

.material-desc {
  font-size: 14px;
  color: var(--text);
  line-height: 1.7;
}

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

.faq-guide-links a {
  display: block;
  padding: 14px 20px;
  font-size: 14px;
  color: var(--text);
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  line-height: 1.6;
  transition: border-color var(--transition), color var(--transition);
}

.faq-guide-links a:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.sidebar-figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-top: 16px;
}

/* ==========================================================================
   Pages — 常见问题 faq.html
   ========================================================================== */

.page-faq .page-title-area {
  border-bottom: none;
}

.page-faq .page-title-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 20px 24px 0;
}

.page-faq .page-title-container .page-title-desc {
  padding: 0;
  margin: 0;
  max-width: 72ch;
}

.content-media-inline {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 20px 24px 0;
}

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

.faq-layout {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  align-items: start;
}

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

.faq-group {
  margin-bottom: 40px;
}

.faq-group-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary);
}

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

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

.aside-card {
  margin-bottom: 24px;
}

/* ==========================================================================
   Pages — 404
   ========================================================================== */

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

.error-panel {
  max-width: 640px;
  width: 100%;
  text-align: center;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 56px 40px;
}

.error-code {
  font-size: 64px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 16px;
  font-family: var(--font-heading);
}

.error-panel h1 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
}

.error-desc {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 32px;
}

.error-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 24px;
}

.error-help {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 0;
}

/* ==========================================================================
   Responsive — 响应式
   ========================================================================== */

@media (max-width: 1024px) {
  .matrix-grid,
  .industry-grid,
  .workflow-steps {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .footer-container {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

@media (max-width: 768px) {
  /* ---------- 导航移动端 ---------- */

  .nav-toggle {
    display: flex;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background-color: var(--surface);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    padding: 8px 16px 16px;
    gap: 2px;
    z-index: 99;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
  }

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

  .nav-list li {
    width: 100%;
  }

  .nav-link {
    display: block;
    padding: 12px 16px;
    font-size: 15px;
    border-radius: var(--radius-sm);
    width: 100%;
  }

  .nav-link.is-current {
    background-color: rgba(167, 30, 34, 0.08);
  }

  .nav-container {
    min-height: 56px;
    gap: 16px;
  }

  .brand-logo {
    font-size: 18px;
  }

  /* ---------- 基础排版 ---------- */

  h1 {
    font-size: 28px;
  }

  h2 {
    font-size: 20px;
  }

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

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

  .breadcrumb {
    padding: 16px 20px 0;
  }

  .breadcrumb-container {
    padding: 8px 20px;
  }

  .container,
  .nav-container,
  .footer-container,
  .layout-shell,
  .hero-container,
  .intro-wrap,
  .solution-industry-block .industry-grid,
  .guide-inner,
  .delivery-timeline,
  .role-table-section,
  .media-section,
  .boundary-note,
  .positioning-block,
  .working-method-block,
  .principle-block,
  .boundary-block,
  .faq-layout,
  .page-faq .page-title-container,
  .content-media-inline,
  .page-title-area .page-intro,
  .page-title-area .page-title-desc,
  .page-title-area .article-meta,
  .title-container,
  .related-links {
    padding-left: 20px;
    padding-right: 20px;
  }

  /* ---------- 首页 ---------- */

  .hero-container {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 20px;
  }

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

  .section-block {
    padding: 48px 0;
  }

  .matrix-grid,
  .industry-grid,
  .workflow-steps {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

  /* ---------- 内页布局 ---------- */

  .page-services .layout-shell,
  .page-contact .layout-shell .page-layout,
  .layout-with-aside,
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .page-services .layout-shell {
    padding-top: 24px;
  }

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

  /* ---------- 解决方案 ---------- */

  .solution-industry-block {
    padding: 40px 0;
  }

  .solution-industry-block .industry-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .industry-media {
    order: -1;
  }

  /* ---------- 交付 ---------- */

  .delivery-timeline,
  .role-table-section,
  .media-section {
    padding-top: 40px;
  }

  .timeline-list::before {
    left: 23px;
  }

  .timeline-item {
    grid-template-columns: 48px minmax(0, 1fr);
    gap: 16px;
  }

  .timeline-number {
    width: 48px;
    height: 48px;
    font-size: 16px;
  }

  .role-table-wrap {
    overflow-x: auto;
  }

  .role-table {
    min-width: 640px;
  }

  /* ---------- 关于 ---------- */

  .positioning-block,
  .working-method-block,
  .principle-block,
  .boundary-block {
    padding-top: 40px;
  }

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

  .principle-list,
  .boundary-list,
  .material-items {
    grid-template-columns: 1fr;
  }

  /* ---------- 联系 ---------- */

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

  .steps-list .step-item {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 16px;
    padding: 20px;
  }

  /* ---------- 页脚 ---------- */

  .footer-container {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 40px 20px 28px;
  }
}

@media (max-width: 480px) {
  .version-keyword {
    display: none;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

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

  .guide-steps li {
    flex-direction: column;
  }

  .material-item {
    flex-direction: column;
    gap: 8px;
  }

  .error-panel {
    padding: 40px 24px;
  }

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