/* ==========================================================
   51黑料网 · 全站样式表
   版本: 1.0
   说明: 覆盖首页、内页、404页全部真实DOM
   ========================================================== */

/* ==========================================================
   Base — 基础变量、重置、字体、通用元素
   ========================================================== */
:root {
  --color-primary: #1B4F9C;
  --color-primary-dark: #14407E;
  --color-primary-light: #3A6BB5;
  --color-bg: #F4F8FC;
  --color-card: #FFFFFF;
  --color-accent: #2F8F7A;
  --color-accent-light: #E7F3F0;
  --color-warning: #E0784A;
  --color-warning-light: #FDF0EA;
  --color-text: #24313D;
  --color-text-light: #5A6B7A;
  --color-text-muted: #7A8B99;
  --color-border: #DCE5EE;
  --color-border-light: #EAF0F6;
  --color-sidebar-bg: #EEF3F9;
  --color-sidebar-hover: #E0E9F3;
  --color-header-bg: #FFFFFF;
  --color-footer-bg: #1B2A3A;
  --color-footer-text: #B8C6D4;
  --color-footer-title: #E8EEF4;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica,
    Arial, sans-serif;

  --container-width: 1240px;
  --sidebar-width: 240px;
  --header-height: 68px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 3px rgba(27, 79, 156, 0.08);
  --shadow-md: 0 4px 12px rgba(27, 79, 156, 0.08);
  --shadow-hover: 0 6px 18px rgba(27, 79, 156, 0.12);
  --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: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-sans);
  color: var(--color-text);
  line-height: 1.3;
  font-weight: 600;
}

h1 {
  font-size: 32px;
  font-weight: 700;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

h4 {
  font-size: 16px;
}

p {
  margin-bottom: 0;
}

figure {
  margin: 0;
}

/* 屏幕阅读器专用 */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

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

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

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}

.brand-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0;
  line-height: 1.2;
}

.brand-slogan {
  font-size: 13px;
  color: var(--color-text-muted);
  border-left: 1px solid var(--color-border);
  padding-left: 12px;
  line-height: 1.4;
  white-space: nowrap;
}

/* 导航按钮（移动端） */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  background-color: var(--color-card);
  border-radius: var(--radius-sm);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  padding: 0;
  flex-shrink: 0;
}

.nav-toggle-icon {
  position: relative;
  width: 20px;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 1px;
  display: block;
  transition: background-color var(--transition);
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 1px;
  transition: transform var(--transition);
}

.nav-toggle-icon::before {
  top: -6px;
}

.nav-toggle-icon::after {
  bottom: -6px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon {
  background-color: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after {
  transform: translateY(-6px) rotate(-45deg);
}

/* 主导航 */
.site-nav {
  display: block;
}

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

.nav-list li {
  margin: 0;
}

.nav-list a {
  display: inline-block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  line-height: 1.5;
  white-space: nowrap;
}

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

.nav-list a.is-current {
  color: var(--color-primary);
  background-color: var(--color-bg);
  font-weight: 600;
}

/* --- 主体区域 --- */
.site-main {
  min-height: 60vh;
}

/* 首页主区域 */
.home-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px 60px;
}

/* 404主区域 */
.error-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 80px 24px;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* --- 内页侧栏布局 --- */
/* 页面布局：侧栏在 main 之前，使用 sidebar-left 类 */
.page-layout {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

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

/* 侧栏 */
.sidebar {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  background-color: var(--color-sidebar-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  padding: 24px 0;
  min-width: 0;
}

.sidebar-inner {
  padding: 0 16px;
}

.sidebar-nav {
  padding: 0 16px;
}

.sidebar-title,
.sidebar-heading {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  padding: 0 16px 12px;
  border-bottom: 1px solid var(--color-border-light);
  margin-bottom: 12px;
  line-height: 1.4;
}

.sidebar-list {
  list-style: none;
}

.sidebar-list li {
  margin: 0;
}

.sidebar-list a {
  display: block;
  padding: 8px 16px;
  font-size: 14px;
  color: var(--color-text-light);
  border-left: 3px solid transparent;
  line-height: 1.5;
  transition: background-color var(--transition), color var(--transition);
}

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

.sidebar-list a.is-current {
  background-color: var(--color-sidebar-hover);
  color: var(--color-primary);
  border-left-color: var(--color-primary);
  font-weight: 500;
}

/* FAQ页侧栏 details 折叠 */
.sidebar details {
  margin-bottom: 4px;
}

.sidebar details summary {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  padding: 8px 16px;
  cursor: pointer;
  list-style: none;
  line-height: 1.5;
  position: relative;
  padding-right: 36px;
}

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

.sidebar details summary::after {
  content: "";
  position: absolute;
  right: 16px;
  top: 50%;
  width: 7px;
  height: 7px;
  border-right: 2px solid var(--color-text-light);
  border-bottom: 2px solid var(--color-text-light);
  transform: translateY(-70%) rotate(45deg);
  transition: transform var(--transition);
}

.sidebar details[open] summary {
  color: var(--color-primary);
}

.sidebar details[open] summary::after {
  transform: translateY(-30%) rotate(-135deg);
}

.sidebar details ul {
  list-style: none;
  padding: 0 0 8px;
}

.sidebar details ul li {
  margin: 0;
}

.sidebar details ul a {
  display: block;
  padding: 6px 16px 6px 32px;
  font-size: 14px;
  color: var(--color-text-light);
  border-left: 3px solid transparent;
  line-height: 1.5;
}

.sidebar details ul a:hover {
  background-color: var(--color-sidebar-hover);
  color: var(--color-primary);
}

.sidebar details ul a.is-current {
  background-color: var(--color-sidebar-hover);
  color: var(--color-primary);
  border-left-color: var(--color-primary);
  font-weight: 500;
}

/* 内页主内容 */
.inner-main {
  min-width: 0;
  min-height: 60vh;
  padding: 36px 0 60px;
}

/* --- 面包屑 --- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 20px;
  flex-wrap: wrap;
}

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

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

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

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

/* --- 页面标题区 --- */
.page-header {
  margin-bottom: 36px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border-light);
}

.page-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  line-height: 1.3;
}

.page-description {
  font-size: 16px;
  color: var(--color-text-light);
  max-width: 720px;
  line-height: 1.8;
}

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

/* --- 内容区块通用 --- */
.content-section {
  margin-bottom: 48px;
}

.content-block {
  margin-bottom: 48px;
}

.section-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
  line-height: 1.4;
}

.section-lead {
  font-size: 16px;
  color: var(--color-text-light);
  margin-bottom: 24px;
  line-height: 1.8;
  max-width: 760px;
}

.section-note {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-top: 16px;
  line-height: 1.7;
}

.section-intro {
  font-size: 16px;
  color: var(--color-text-light);
  margin-bottom: 20px;
  line-height: 1.8;
  max-width: 720px;
}

/* 文本段落块 */
.text-block p {
  font-size: 16px;
  line-height: 1.9;
  color: var(--color-text);
  margin-bottom: 16px;
  max-width: 760px;
}

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

/* --- 链接 --- */
.text-link {
  display: inline-block;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-primary);
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}

.text-link:hover {
  border-bottom-color: var(--color-primary);
}

/* --- 图片与配图 --- */
.content-figure {
  margin: 32px 0;
}

.content-figure img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  background-color: var(--color-card);
}

.content-figure figcaption {
  font-size: 13px;
  color: var(--color-text-muted);
  padding: 10px 4px 0;
  line-height: 1.6;
  text-align: left;
}

figure.guide-figure {
  margin: 0;
  min-width: 0;
}

.guide-figure img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
}

.guide-figure figcaption {
  font-size: 13px;
  color: var(--color-text-muted);
  padding: 8px 4px 0;
  line-height: 1.6;
}

/* --- 风险提示条 --- */
.non-scope-note {
  background-color: var(--color-warning-light);
  border: 1px solid #F0D5C8;
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  margin: 40px 0;
}

.non-scope-note h2 {
  font-size: 20px;
  color: var(--color-warning);
  margin-bottom: 12px;
}

.non-scope-note p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 12px;
}

.non-scope-note ul {
  list-style: none;
  margin: 8px 0 12px;
}

.non-scope-note li {
  padding: 6px 0 6px 20px;
  position: relative;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text);
}

.non-scope-note li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-warning);
}

/* 警示区块（process页） */
.warning-block {
  background-color: var(--color-warning-light);
  border: 1px solid #F0D5C8;
  border-radius: var(--radius-lg);
  padding: 28px 32px;
}

.warning-block h2 {
  font-size: 20px;
  color: var(--color-warning);
  margin-bottom: 12px;
}

.warning-block p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 12px;
}

.warning-block p:last-child {
  margin-bottom: 0;
}

.warning-block a {
  font-weight: 500;
}

.warning-block ul {
  list-style: none;
  margin: 8px 0 12px;
}

.warning-block li {
  padding: 6px 0;
  font-size: 15px;
  line-height: 1.7;
}

.warning-block li strong {
  color: var(--color-warning);
  font-weight: 600;
}

/* --- 相关卡片 --- */
.related-card {
  display: block;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: box-shadow var(--transition), transform var(--transition);
}

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

.related-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.related-card p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
}

.related-card-title {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.related-card span:last-child {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* --- 页脚 --- */
.site-footer {
  background-color: var(--color-footer-bg);
  color: var(--color-footer-text);
  margin-top: 40px;
}

.footer-columns {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
}

.footer-brand p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-footer-text);
  margin-bottom: 8px;
}

.footer-brand strong {
  display: block;
  font-size: 18px;
  font-weight: 600;
  color: var(--color-footer-title);
  margin-bottom: 8px;
}

.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-footer-title);
  margin-bottom: 16px;
}

.footer-nav ul,
.footer-help ul {
  list-style: none;
}

.footer-nav li,
.footer-help li {
  margin-bottom: 10px;
}

.footer-nav a,
.footer-help a {
  color: var(--color-footer-text);
  font-size: 14px;
  line-height: 1.6;
}

.footer-nav a:hover,
.footer-help a:hover {
  color: var(--color-footer-title);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 24px 28px;
}

.footer-bottom p {
  max-width: var(--container-width);
  margin: 0 auto;
  font-size: 13px;
  color: var(--color-footer-text);
  line-height: 1.7;
  text-align: left;
}

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

/* --- 首屏 hero --- */
.hero-section {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 48px;
  align-items: center;
  margin-bottom: 56px;
}

.hero-content h1 {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 17px;
  line-height: 1.8;
  color: var(--color-text-light);
  margin-bottom: 24px;
  max-width: 540px;
}

.hero-issue-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-issue-list li {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 8px 16px;
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.5;
}

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

.hero-figure {
  margin: 0;
}

.hero-figure img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-md);
}

/* --- 首页区块通用 --- */
.section-block {
  margin-bottom: 56px;
}

.section-block h2 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 24px;
  line-height: 1.4;
}

/* --- 自助判断区 --- */
.checklist-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.check-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: box-shadow var(--transition), transform var(--transition);
}

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

.check-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 10px;
  line-height: 1.4;
}

.check-card p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 14px;
}

.check-card a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
}

/* --- 服务摘要区 --- */
.service-summary {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 32px;
}

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

.service-line-item {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr) auto;
  gap: 20px;
  align-items: start;
  padding: 16px 8px;
  border-bottom: 1px solid var(--color-border-light);
}

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

.service-line-item h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.4;
}

.service-line-item p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
}

.service-line-item a {
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  align-self: start;
}

.service-image {
  margin-top: 24px;
}

.service-image img {
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
}

/* --- 工作流程预览 --- */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  margin-bottom: 20px;
}

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

.step-number {
  display: inline-block;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  text-align: center;
  line-height: 32px;
  margin-bottom: 14px;
}

.step-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.step-item p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* --- FAQ 跟进区 --- */
.faq-entry-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-bottom: 20px;
}

.faq-entry-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  transition: box-shadow var(--transition), transform var(--transition);
}

.faq-entry-item a {
  display: block;
  padding: 20px;
}

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

.faq-entry-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
  line-height: 1.4;
}

.faq-entry-item p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* --- 入口引导 --- */
.guide-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.guide-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: box-shadow var(--transition), transform var(--transition);
}

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

.guide-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 10px;
}

.guide-card p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}

.guide-card a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  display: inline-block;
}

/* --- 页尾相关链接导航 --- */
.related-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 20px 0;
  margin-top: 8px;
  border-top: 1px solid var(--color-border-light);
}

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

.related-links-item {
  display: inline-block;
  font-size: 14px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 6px 14px;
  color: var(--color-text-light);
  transition: color var(--transition), border-color var(--transition);
}

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

/* ==========================================================
   Pages — 服务范围 services
   ========================================================== */

/* 服务边界摘要 */
.service-boundary-summary {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  margin-bottom: 40px;
}

.service-boundary-summary p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 16px;
  max-width: 760px;
}

.boundary-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
}

.boundary-tag-list li {
  font-size: 14px;
  color: var(--color-primary);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 6px 14px;
  line-height: 1.5;
}

/* 服务项目列表 */
.service-items {
  margin-bottom: 40px;
}

.service-items > .section-title {
  margin-bottom: 24px;
}

.service-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  margin-bottom: 20px;
  overflow: hidden;
}

.service-item-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 28px;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border-light);
}

.service-item-header h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
}

.service-tag {
  display: inline-block;
  font-size: 13px;
  color: var(--color-accent);
  background-color: var(--color-accent-light);
  border-radius: var(--radius-sm);
  padding: 4px 12px;
  white-space: nowrap;
  line-height: 1.5;
}

.service-item-body {
  padding: 24px 28px;
}

.service-detail-block {
  margin-bottom: 16px;
}

.service-detail-block:last-child {
  margin-bottom: 0;
}

.service-detail-block h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
  line-height: 1.5;
}

.service-detail-block p {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
}

.service-detail-block.service-limit {
  background-color: var(--color-warning-light);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}

.service-detail-block.service-limit h4 {
  color: var(--color-warning);
}

.service-detail-block.service-limit p {
  color: var(--color-text);
}

/* 服务输出图 */
.service-output-figure {
  margin: 32px 0;
}

.service-output-figure img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
}

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

/* 相关服务入口 */
.related-services {
  margin-top: 40px;
}

.related-services h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 20px;
}

.related-card-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.related-card-list .related-card {
  background-color: var(--color-card);
}

/* ==========================================================
   Pages — 今日黑料 monitor
   ========================================================== */

/* 判断规则 */
.rule-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-bottom: 16px;
}

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

.rule-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 10px;
  line-height: 1.4;
}

.rule-card p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* 风险分级表 */
.table-wrapper {
  overflow-x: auto;
  margin: 16px 0;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background-color: var(--color-card);
}

.risk-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  min-width: 560px;
}

.risk-table thead th {
  background-color: var(--color-primary);
  color: #fff;
  font-weight: 600;
  padding: 14px 18px;
  text-align: left;
  font-size: 15px;
  line-height: 1.5;
  white-space: nowrap;
}

.risk-table tbody td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text);
  line-height: 1.7;
  vertical-align: top;
}

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

.risk-table tbody tr:nth-child(even) {
  background-color: var(--color-bg);
}

/* 回应路径 */
.path-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.path-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  border-top: 3px solid var(--color-primary);
}

.path-item h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 10px;
  line-height: 1.4;
}

.path-item p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* 图片引导区 */
.image-text-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(240px, 0.8fr);
  gap: 32px;
  align-items: center;
}

.image-explanation p {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 12px;
}

.image-explanation p:last-child {
  margin-bottom: 0;
}

/* 相关网格 */
.related-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

/* ==========================================================
   Pages — 适用场景 scenarios
   ========================================================== */

.overview-list {
  list-style: none;
  margin-bottom: 20px;
}

.overview-list li {
  padding: 8px 0 8px 24px;
  position: relative;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text);
}

.overview-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 17px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-primary);
}

/* 场景卡片 */
.scenario-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  margin-bottom: 20px;
}

.scenario-text h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 10px;
  line-height: 1.4;
}

.scenario-text p {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 8px;
}

.scenario-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.action-block {
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}

.action-block h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
  line-height: 1.5;
}

.action-block p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* 场景图 */
.content-figure img {
  width: 100%;
}

/* 起始入口 */
.start-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 16px;
}

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

.start-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.start-card p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 12px;
}

.start-card a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
}

/* ==========================================================
   Pages — 合作流程 process
   ========================================================== */

/* 时间线 */
.timeline-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin: 24px 0 32px;
  position: relative;
}

.timeline-item {
  position: relative;
  padding: 0 20px 0 0;
}

.timeline-item::before {
  content: "";
  position: absolute;
  top: 14px;
  left: 0;
  right: 20px;
  height: 2px;
  background-color: var(--color-border);
  z-index: 0;
}

.timeline-item:first-child::before {
  left: 16px;
}

.timeline-item:last-child::before {
  right: auto;
  width: 24px;
}

.timeline-marker {
  display: block;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--color-accent);
  border: 3px solid var(--color-card);
  box-shadow: 0 0 0 2px var(--color-accent);
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.timeline-content h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.4;
}

.timeline-content p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* 准备清单 */
.checklist-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

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

.checklist-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
  line-height: 1.4;
}

.checklist-card p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 8px;
}

.checklist-card .card-tip {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--color-border-light);
}

/* 相关卡片 */
.related-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

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

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

.faq-group h2 {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border-light);
  line-height: 1.4;
}

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

.faq-item summary {
  padding: 18px 24px;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  line-height: 1.5;
  position: relative;
  padding-right: 48px;
  transition: background-color var(--transition);
}

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

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

.faq-item summary::after {
  content: "";
  position: absolute;
  right: 24px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
  transform: translateY(-70%) rotate(45deg);
  transition: transform var(--transition);
}

.faq-item[open] summary {
  color: var(--color-primary);
  border-bottom: 1px solid var(--color-border-light);
}

.faq-item[open] summary::after {
  transform: translateY(-30%) rotate(-135deg);
}

.faq-answer {
  padding: 18px 24px;
}

.faq-answer p {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 12px;
}

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

/* 帮助卡片 */
.help-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.8fr);
  gap: 28px;
  align-items: center;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-top: 24px;
}

.help-card img {
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
}

.help-card-text p {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
}

.help-card-text .help-card-heading {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 10px;
  line-height: 1.4;
}

/* FAQ 页底部相关网格 */
.related-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

/* ==========================================================
   Pages — 关于我们 about
   ========================================================== */

/* 工作方法 */
.method-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 8px;
}

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

.method-item h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 10px;
  line-height: 1.4;
}

.method-item p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* 原则列表 */
.principle-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

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

.principle-list li h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.4;
}

.principle-list li p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* 边界提示 */
.boundary-note {
  background-color: var(--color-warning-light);
  border: 1px solid #F0D5C8;
  border-radius: var(--radius-lg);
  padding: 28px 32px;
}

.boundary-note p {
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.8;
  margin-bottom: 12px;
}

.boundary-list {
  list-style: none;
  margin: 8px 0 12px;
}

.boundary-list li {
  padding: 6px 0 6px 24px;
  position: relative;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text);
}

.boundary-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-warning);
}

.boundary-list li strong {
  color: var(--color-warning);
  font-weight: 600;
}

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

.error-content {
  text-align: center;
  max-width: 560px;
  padding: 40px 0;
}

.error-code {
  font-size: 80px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 8px;
}

.error-content h1 {
  font-size: 26px;
  color: var(--color-text);
  margin-bottom: 16px;
}

.error-desc {
  font-size: 16px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 32px;
}

.error-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.error-btn {
  display: inline-block;
  padding: 10px 24px;
  background-color: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.5;
}

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

.error-link {
  display: inline-block;
  padding: 10px 24px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  border-radius: var(--radius-md);
  font-size: 15px;
  line-height: 1.5;
}

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

.error-help {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.error-help a {
  color: var(--color-primary);
  margin: 0 4px;
}

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

/* --- 桌面小屏 ~1024px --- */
@media (max-width: 1024px) {
  .page-layout,
  .layout-shell {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 24px;
  }

  .hero-section {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.8fr);
    gap: 32px;
  }
}

/* --- 平板 ~900px --- */
@media (max-width: 900px) {
  .header-inner {
    padding: 0 16px;
  }

  .brand-slogan {
    display: none;
  }

  /* 导航切换为汉堡 */
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-card);
    border-bottom: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-md);
    display: block;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 16px;
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
  }

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

  .nav-list li {
    border-bottom: 1px solid var(--color-border-light);
  }

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

  .nav-list a {
    display: block;
    padding: 14px 8px;
    font-size: 16px;
    border-radius: 0;
  }

  .nav-list a.is-current {
    background-color: transparent;
    color: var(--color-primary);
  }

  /* 页面布局改为单列 */
  .page-layout,
  .layout-shell {
    display: block;
    padding: 0 20px;
  }

  .sidebar {
    display: none;
  }

  .inner-main {
    padding: 28px 0 48px;
  }

  /* 首页布局调整 */
  .home-main {
    padding: 32px 20px 48px;
  }

  .hero-section {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  .hero-media {
    order: 2;
  }

  /* 多列元素降为两列 */
  .process-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .timeline-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px 16px;
  }

  .timeline-item::before {
    display: none;
  }

  .image-text-wrap {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .help-card {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

/* --- 手机 ~640px --- */
@media (max-width: 640px) {
  .header-inner {
    padding: 0 12px;
  }

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

  .page-layout,
  .layout-shell {
    padding: 0 12px;
  }

  .home-main {
    padding: 24px 12px 40px;
  }

  .error-main {
    padding: 48px 16px;
  }

  .inner-main {
    padding: 20px 0 40px;
  }

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

  .page-header {
    margin-bottom: 28px;
    padding-bottom: 18px;
  }

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

  /* 多列元素全部降为单列 */
  .checklist-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

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

  .faq-entry-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

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

  .service-line-item a {
    white-space: normal;
  }

  .service-item-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 16px 20px;
  }

  .service-item-body {
    padding: 16px 20px;
  }

  .service-detail-block.service-limit {
    padding: 12px 14px;
  }

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

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

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

  .related-card-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

  .scenario-card {
    padding: 20px;
  }

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

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

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

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

  .non-scope-note,
  .warning-block,
  .boundary-note {
    padding: 20px;
  }

  .service-boundary-summary {
    padding: 20px;
  }

  .footer-columns {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px 16px 24px;
  }

  .footer-bottom {
    padding: 16px 16px 24px;
  }

  .footer-bottom p {
    font-size: 12px;
  }

  .hero-content h1 {
    font-size: 26px;
  }

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

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

  .hero-issue-list li {
    text-align: left;
  }

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

  .error-code {
    font-size: 60px;
  }

  .error-content h1 {
    font-size: 22px;
  }

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

  .error-btn,
  .error-link {
    width: 100%;
    max-width: 280px;
    text-align: center;
  }

  .faq-item summary {
    padding: 14px 44px 14px 16px;
    font-size: 15px;
  }

  .faq-item summary::after {
    right: 16px;
  }

  .faq-answer {
    padding: 14px 16px;
  }

  .help-card {
    padding: 16px;
  }

  .checklist-card {
    padding: 18px;
  }

  .step-item {
    padding: 18px;
  }

  .check-card {
    padding: 18px;
  }
}

/* --- 极小屏 ~380px 兜底 --- */
@media (max-width: 380px) {
  .brand a {
    gap: 4px;
  }

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

  .hero-content h1 {
    font-size: 24px;
  }

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

  .related-links-label {
    display: block;
    margin-bottom: 4px;
  }
}