/* ============================================================
   吃瓜爆料网 · 全站样式表
   版本：1.0
   说明：覆盖首页、6个内页与404页面的全部真实DOM
   ============================================================ */


/* ============================================================
   1. BASE — 基础变量、重置、字体、通用元素
   ============================================================ */

:root {
  --color-bg: #ffffff;
  --color-ink: #1a2634;
  --color-accent: #c85a2d;
  --color-text: #2d2d2d;
  --color-gray-bg: #f5f5f3;
  --color-border: #e3e1dc;
  --color-muted: #6b7280;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --container-width: 1200px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 8px;
  --transition-base: 0.2s ease;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
}

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

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

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-ink);
}

/* 统一容器宽度 */
.site-main .section-block,
.site-main .page-header,
.site-main .breadcrumb,
.site-main .page-container,
.site-main .related-links,
.site-main .cooperation-process,
.site-main .requirement-prep,
.site-main .feedback-note,
.site-main .faq-section,
.site-main .coverage-grid-section,
.site-main .scenario-section,
.site-main .boundary-section,
.site-main .service-matrix,
.site-main .service-process,
.site-main .delivery-standard,
.site-main .term-index,
.site-main .basic-articles,
.site-main .advanced-topics,
.site-main .common-misconceptions {
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* 顶部提示条（首页/公开动态/合作渠道） */
.top-tip,
.top-ribbon,
.top-strip {
  background-color: var(--color-ink);
  color: #ffffff;
  text-align: center;
  font-size: 14px;
  padding: 8px 16px;
  line-height: 1.5;
}

.top-tip-text,
.ribbon-text,
.top-strip p {
  max-width: var(--container-width);
  margin: 0 auto;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  padding: 10px 24px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base);
  min-height: 44px;
}

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

.btn-primary:hover {
  background-color: #b04e22;
  border-color: #b04e22;
  color: #ffffff;
}

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

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}


/* ============================================================
   2. LAYOUT — 页头、导航、页脚、面包屑、页面标题区
   ============================================================ */

/* ---------- 页头 ---------- */

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

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 24px;
}

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

.brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  line-height: 1.2;
}

.brand-tagline {
  font-size: 12px;
  color: var(--color-muted);
  line-height: 1.3;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: color var(--transition-base);
}

.nav-link:hover {
  color: var(--color-accent);
}

.nav-item.is-current .nav-link,
.nav-link.is-current {
  color: var(--color-accent);
  font-weight: 600;
}

.nav-item.is-current .nav-link::after,
.nav-link.is-current::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 0;
  height: 2px;
  background-color: var(--color-accent);
  border-radius: 2px;
}

.header-cta {
  margin-left: 8px;
  padding: 8px 20px;
  font-size: 14px;
}

/* 移动端汉堡按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-ink);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* ---------- 面包屑 ---------- */

.breadcrumb {
  padding-top: 20px;
  padding-bottom: 8px;
  font-size: 14px;
  color: var(--color-muted);
}

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

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

.breadcrumb-sep {
  margin: 0 8px;
  color: #b0b0b0;
}

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

/* ---------- 页面标题区（内页统一） ---------- */

.page-header {
  padding-top: 16px;
  padding-bottom: 32px;
}

.page-title {
  font-size: 32px;
  line-height: 1.3;
  margin-bottom: 8px;
}

.page-subtitle,
.page-description,
.page-lead {
  font-size: 16px;
  color: var(--color-muted);
  max-width: 720px;
}

.page-header-figure,
.page-header-media {
  margin-top: 24px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-gray-bg);
}

.page-header-figure img,
.page-header-media img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

/* ---------- 页脚 ---------- */

.site-footer {
  background-color: var(--color-ink);
  color: #c8cdd4;
  margin-top: 64px;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 32px;
}

.footer-brand-name {
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
}

.footer-brand-desc {
  font-size: 14px;
  line-height: 1.6;
  color: #a3abb5;
  max-width: 260px;
}

.footer-col-title {
  font-size: 15px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 12px;
}

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

.footer-link {
  font-size: 14px;
  color: #a3abb5;
  transition: color var(--transition-base);
}

.footer-link:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid #2d3743;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: var(--container-width);
  margin: 0 auto;
}

.copyright {
  font-size: 13px;
  color: #8a939e;
}

.clear-history {
  background: none;
  border: 1px solid #3d4854;
  color: #a3abb5;
  font-size: 13px;
  padding: 6px 16px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color var(--transition-base), color var(--transition-base);
}

.clear-history:hover {
  border-color: var(--color-accent);
  color: #ffffff;
}

/* ---------- 通用区块标题 ---------- */

.section-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 12px;
}

.section-desc,
.section-intro {
  font-size: 15px;
  color: var(--color-muted);
  margin-bottom: 24px;
  max-width: 720px;
}

/* ---------- 相关链接通用 ---------- */

.related-links {
  padding-top: 24px;
  padding-bottom: 24px;
}

.related-links-label,
.related-links-title,
.related-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.related-links-item,
.related-link {
  font-size: 14px;
  color: var(--color-accent);
  margin-right: 16px;
}

.related-links-item:hover,
.related-link:hover {
  text-decoration: underline;
}

/* 视觉隐藏（仅用于无障碍） */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}


/* ============================================================
   3. COMPONENTS — 卡片、列表、FAQ、折叠、流程等通用组件
   ============================================================ */

/* ---------- 服务卡片（首页三卡 + 服务目录四卡） ---------- */

.service-card {
  background-color: var(--color-gray-bg);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid transparent;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.service-card:hover {
  border-color: var(--color-border);
  box-shadow: 0 2px 12px rgba(26, 38, 52, 0.06);
}

.service-card-title {
  font-size: 18px;
  margin-bottom: 8px;
}

.service-card-desc {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 12px;
  line-height: 1.6;
}

.service-card-audience {
  font-size: 13px;
  color: var(--color-muted);
  border-top: 1px solid var(--color-border);
  padding-top: 12px;
}

.service-card-audience strong {
  color: var(--color-ink);
  font-weight: 600;
}

.card-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  display: inline-block;
}

.card-link:hover {
  text-decoration: underline;
}

/* ---------- 动态列表（首页摘要 + 公开动态页） ---------- */

.news-list {
  display: flex;
  flex-direction: column;
}

.news-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.news-tag,
.news-category-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-accent);
  background-color: rgba(200, 90, 45, 0.08);
  padding: 2px 10px;
  border-radius: 20px;
  margin-bottom: 6px;
}

.news-title {
  font-size: 17px;
  font-weight: 600;
  display: block;
  margin-bottom: 4px;
}

.news-title:hover {
  color: var(--color-accent);
}

.news-summary,
.news-item-summary {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
}

.more-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  margin-top: 16px;
}

.more-link:hover {
  text-decoration: underline;
}

/* ---------- FAQ 折叠 ---------- */

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

.faq-question {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  position: relative;
  padding-right: 48px;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--color-accent);
  transition: transform var(--transition-base);
}

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

.faq-answer {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
}

.faq-answer p {
  margin-bottom: 8px;
}

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

/* ---------- 流程步骤（首页四步 + 服务目录四步 + 合作流程四步） ---------- */

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

.step-item,
.process-step {
  background-color: var(--color-gray-bg);
  border-radius: var(--radius-md);
  padding: 20px;
  position: relative;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: var(--color-accent);
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 12px;
}

.step-text {
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.6;
}

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

.process-step-desc,
.step-desc {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
}

/* ---------- 场景图片卡（首页） ---------- */

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

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

.scenario-card:hover {
  box-shadow: 0 4px 16px rgba(26, 38, 52, 0.08);
}

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

.scenario-caption {
  padding: 16px 20px 20px;
}

.scenario-title {
  font-size: 17px;
  margin-bottom: 6px;
}

.scenario-desc {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 10px;
}

/* ---------- 专题入口卡（首页） ---------- */

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

.topic-card {
  display: block;
  background-color: var(--color-gray-bg);
  border-radius: var(--radius-md);
  padding: 28px;
  border: 1px solid transparent;
  transition: border-color var(--transition-base), background-color var(--transition-base);
}

.topic-card:hover {
  border-color: var(--color-border);
  background-color: #f0efec;
}

.topic-title {
  font-size: 18px;
  margin-bottom: 8px;
}

.topic-desc,
.topic-summary {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 12px;
}

.topic-link-text,
.topic-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
}

.topic-link-text:hover,
.topic-link:hover {
  text-decoration: underline;
}

/* ---------- 信息卡（企业概览右侧栏） ---------- */

.info-card {
  background-color: var(--color-gray-bg);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 20px;
}

.info-card-title {
  font-size: 18px;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}

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

.info-card p:last-child {
  margin-bottom: 0;
}

.boundary-list li {
  font-size: 14px;
  color: var(--color-text);
  padding: 6px 0;
  padding-left: 16px;
  position: relative;
  line-height: 1.5;
}

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

/* ---------- 相关链接列表（企业概览右侧栏 / 公开动态侧栏） ---------- */

.related-links-card .related-links li,
.related-links-list li {
  margin-bottom: 10px;
}

.related-links-card .related-links a,
.related-links-list a {
  font-size: 14px;
  color: var(--color-accent);
}

.related-links-card .related-links a:hover,
.related-links-list a:hover {
  text-decoration: underline;
}

/* ---------- 术语卡片（服务指南） ---------- */

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

.term-card {
  background-color: var(--color-gray-bg);
  border-radius: var(--radius-md);
  padding: 20px;
  border: 1px solid transparent;
  transition: border-color var(--transition-base);
}

.term-card:hover {
  border-color: var(--color-border);
}

.term-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 6px;
}

.term-def {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
}

/* ---------- 文章行（服务指南基础文章） ---------- */

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

.article-row {
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}

.article-row:last-child {
  border-bottom: none;
}

.article-title {
  font-size: 17px;
  margin-bottom: 4px;
}

.article-title a {
  color: var(--color-ink);
}

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

.article-summary {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
}

/* ---------- 误区折叠（服务指南） ---------- */

.misconception-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  background-color: var(--color-bg);
}

.misconception-question {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  padding-right: 48px;
  position: relative;
  list-style: none;
  color: var(--color-accent);
}

.misconception-question::-webkit-details-marker {
  display: none;
}

.misconception-question::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--color-accent);
}

.misconception-item[open] .misconception-question::after {
  content: "−";
}

.misconception-answer {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.7;
}

.misconception-answer p {
  margin-bottom: 8px;
}

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

/* ---------- 区块标题行（服务指南） ---------- */

.section-heading-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.section-heading-row .section-title {
  margin-bottom: 0;
}

.section-more-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
}

.section-more-link:hover {
  text-decoration: underline;
}

/* ---------- 需求准备双栏（合作渠道） ---------- */

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

.prep-col {
  background-color: var(--color-gray-bg);
  border-radius: var(--radius-md);
  padding: 24px;
}

.prep-col-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.prep-list li {
  font-size: 14px;
  color: var(--color-text);
  padding: 6px 0;
  padding-left: 16px;
  position: relative;
  line-height: 1.6;
}

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


/* ============================================================
   4. PAGES — 首页与各内页专属布局
   ============================================================ */

/* ---------- 首页 ---------- */

/* 首屏 hero */
.hero-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 40px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-title {
  font-size: 36px;
  line-height: 1.3;
  margin-bottom: 16px;
}

.hero-subtitle {
  font-size: 17px;
  color: var(--color-muted);
  margin-bottom: 24px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-gray-bg);
}

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

/* 服务领域索引（首页三卡） */
.service-index .service-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* 近期动态（首页） */
.recent-news .news-list {
  max-width: 860px;
}

/* 核心能力（首页双栏） */
.core-capability .section-block {
  max-width: var(--container-width);
}

.capability-intro {
  margin-bottom: 24px;
}

.capability-points {
  list-style: disc;
  padding-left: 20px;
}

.capability-points li {
  font-size: 15px;
  color: var(--color-text);
  padding: 4px 0;
  line-height: 1.6;
}

.capability-steps {
  background-color: var(--color-gray-bg);
  border-radius: var(--radius-md);
  padding: 28px;
}

.steps-title {
  font-size: 18px;
  margin-bottom: 16px;
}

/* 首页核心能力双栏 */
.core-capability {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* FAQ 预览（首页） */
.faq-preview .faq-list {
  max-width: 860px;
}

/* 专题中心（首页） */
.topic-center .topic-cards {
  max-width: 960px;
}

/* ---------- 企业概览（about） ---------- */

.page-layout.layout-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 40px;
  align-items: start;
}

.content-primary .content-section {
  margin-bottom: 32px;
}

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

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

.content-secondary {
  position: sticky;
  top: 88px;
}

/* ---------- 服务目录（services） ---------- */

.matrix-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.service-matrix .service-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
}

/* 交付标准 */
.standard-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.standard-item {
  background-color: var(--color-gray-bg);
  border-radius: var(--radius-md);
  padding: 20px 24px;
}

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

.standard-item-desc {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
}

/* 服务目录底部相关链接 */
.related-links .related-links-title {
  font-size: 15px;
  font-weight: 600;
}

/* ---------- 业务版图（coverage） ---------- */

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

.coverage-card {
  background-color: var(--color-gray-bg);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid transparent;
  transition: border-color var(--transition-base);
}

.coverage-card:hover {
  border-color: var(--color-border);
}

.coverage-card-title {
  font-size: 17px;
  margin-bottom: 8px;
  color: var(--color-accent);
}

.coverage-card-text {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
}

/* 适用场景（左图右文） */
.scenario-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}

.scenario-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-gray-bg);
}

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

.scenario-list {
  list-style: disc;
  padding-left: 20px;
}

.scenario-list li {
  font-size: 14px;
  color: var(--color-text);
  padding: 4px 0;
  line-height: 1.6;
}

.scenario-list strong {
  color: var(--color-ink);
}

/* 服务边界（业务版图） */
.boundary-text {
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.8;
  margin-bottom: 16px;
}

.boundary-section .boundary-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 32px;
}

/* ---------- 公开动态（news） ---------- */

.page-container {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

/* 分类标签 */
.category-tabs {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.category-tab-link {
  display: inline-block;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  background-color: var(--color-gray-bg);
  border-radius: 20px;
  transition: background-color var(--transition-base), color var(--transition-base);
}

.category-tab-link:hover {
  color: var(--color-accent);
}

.category-tab-link.is-active {
  background-color: var(--color-accent);
  color: #ffffff;
}

/* 动态列表 */
.news-list-section .news-item {
  padding: 20px 0;
}

.news-item-header {
  margin-bottom: 8px;
}

.news-item-title {
  font-size: 18px;
  margin-bottom: 4px;
}

.news-item-title a {
  color: var(--color-ink);
}

.news-item-title a:hover {
  color: var(--color-accent);
}

/* 动态页侧栏 */
.news-page-aside .related-links {
  background-color: var(--color-gray-bg);
  border-radius: var(--radius-md);
  padding: 20px;
}

/* ---------- 合作渠道（contact） ---------- */

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

.cooperation-process .process-step {
  background-color: var(--color-gray-bg);
  border-radius: var(--radius-md);
  padding: 20px;
}

.cooperation-process .step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: var(--color-accent);
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 12px;
}

.feedback-content {
  background-color: var(--color-gray-bg);
  border-radius: var(--radius-md);
  padding: 24px 28px;
}

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

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

/* ---------- 404 ---------- */

.error-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 80px 24px;
  text-align: center;
}

.error-code {
  font-size: 64px;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 8px;
}

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

.error-desc {
  font-size: 15px;
  color: var(--color-muted);
  margin-bottom: 24px;
}

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


/* ============================================================
   5. RESPONSIVE — 992px / 768px 断点
   ============================================================ */

/* ---------- 平板（≤992px） ---------- */

@media (max-width: 992px) {

  /* 页脚改为三列 */
  .footer-inner {
    grid-template-columns: 2fr 1fr 1fr;
    row-gap: 32px;
  }

  /* 首页 hero 单列 */
  .hero-section {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero-image {
    height: 260px;
  }

  /* 核心能力单列 */
  .core-capability {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  /* 业务版图四卡改两列 */
  .coverage-grid {
    grid-template-columns: 1fr 1fr;
  }

  /* 术语四卡改两列 */
  .term-grid {
    grid-template-columns: 1fr 1fr;
  }

  /* 流程四步改两列 */
  .steps-list,
  .process-steps {
    grid-template-columns: 1fr 1fr;
  }

  /* 企业概览主侧栏改单列 */
  .page-layout.layout-shell {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .content-secondary {
    position: static;
  }

  /* 公开动态主侧栏改单列 */
  .page-container {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  /* 服务目录矩阵改单列 */
  .matrix-grid {
    grid-template-columns: 1fr;
  }

  /* 交付标准改单列 */
  .standard-list {
    grid-template-columns: 1fr;
  }

  /* 适用场景改单列 */
  .scenario-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  /* 需求准备改单列 */
  .prep-layout {
    grid-template-columns: 1fr;
  }

}

/* ---------- 手机（≤768px） ---------- */

@media (max-width: 768px) {

  /* 汉堡菜单显示 */
  .nav-toggle {
    display: flex;
  }

  /* 导航列表默认收起 */
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 24px;
  }

  .nav-list.is-open {
    max-height: 480px;
  }

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

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

  .nav-link {
    padding: 12px 8px;
    font-size: 16px;
  }

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

  .header-cta {
    display: none;
  }

  /* 页头内边距 */
  .header-inner {
    min-height: 60px;
    padding: 0 16px;
  }

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

  .brand-tagline {
    display: none;
  }

  /* 页脚改两列 */
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    padding: 32px 16px 24px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    padding: 16px;
    text-align: center;
  }

  /* 页面标题字号 */
  .page-title {
    font-size: 26px;
  }

  .page-header-figure img,
  .page-header-media img {
    height: 200px;
  }

  /* 首页 hero */
  .hero-section {
    padding: 32px 16px 24px;
  }

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

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

  .hero-image {
    height: 200px;
  }

  /* 首页服务卡片单列 */
  .service-index .service-cards {
    grid-template-columns: 1fr;
  }

  /* 首页场景卡片单列 */
  .scenario-cards {
    grid-template-columns: 1fr;
  }

  /* 首页专题卡片单列 */
  .topic-cards {
    grid-template-columns: 1fr;
  }

  /* 流程步骤单列 */
  .steps-list,
  .process-steps {
    grid-template-columns: 1fr;
  }

  /* 业务版图四卡单列 */
  .coverage-grid {
    grid-template-columns: 1fr;
  }

  /* 术语四卡单列 */
  .term-grid {
    grid-template-columns: 1fr;
  }

  /* 服务边界列表单列 */
  .boundary-section .boundary-list {
    grid-template-columns: 1fr;
  }

  /* 合作流程四步单列 */
  .cooperation-process .process-steps {
    grid-template-columns: 1fr;
  }

  /* 区块通用内边距 */
  .site-main .section-block,
  .site-main .page-header,
  .site-main .breadcrumb,
  .site-main .page-container,
  .site-main .cooperation-process,
  .site-main .requirement-prep,
  .site-main .feedback-note,
  .site-main .faq-section,
  .site-main .coverage-grid-section,
  .site-main .scenario-section,
  .site-main .boundary-section,
  .site-main .service-matrix,
  .site-main .service-process,
  .site-main .delivery-standard,
  .site-main .term-index,
  .site-main .basic-articles,
  .site-main .advanced-topics,
  .site-main .common-misconceptions {
    padding-left: 16px;
    padding-right: 16px;
  }

  /* 企业概览布局 */
  .page-layout.layout-shell {
    padding: 0 16px;
  }

  /* 页面标题区 */
  .page-header {
    padding-bottom: 20px;
  }

  /* 404 */
  .error-section {
    padding: 48px 16px;
  }

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

}

/* ---------- 小屏（≤480px） ---------- */

@media (max-width: 480px) {

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

  .footer-brand {
    grid-column: auto;
  }

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

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

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

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

}