/* ==========================================================================
   51吃瓜在线 · 全站样式表
   视觉方向：售后支持风 + 展览目录布局
   主色 #1A3A5C / 强调 #E8890C / 正文 #222222
   ========================================================================== */

/* ==========================================================================
   Base
   ========================================================================== */

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

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

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #222222;
  background-color: #ffffff;
  min-width: 320px;
}

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

a {
  color: #1A3A5C;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #E8890C;
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.3;
  color: #1A3A5C;
}

h1 {
  font-size: 32px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

h4 {
  font-size: 16px;
}

p {
  margin-bottom: 12px;
}

figure {
  margin: 0;
}

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

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ==========================================================================
   Layout
   ========================================================================== */

.site-header {
  background-color: #ffffff;
  border-bottom: 1px solid #DCE1E6;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-logo {
  font-size: 20px;
  font-weight: 700;
  color: #1A3A5C;
  white-space: nowrap;
  letter-spacing: 0;
}

.brand-logo:hover {
  color: #1A3A5C;
}

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

.main-nav a {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  color: #1A3A5C;
  border-radius: 4px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.main-nav a:hover {
  background-color: #F4F6F8;
  color: #E8890C;
}

.main-nav a.is-current {
  background-color: #1A3A5C;
  color: #ffffff;
  font-weight: 600;
}

.site-main {
  min-height: 60vh;
}

.site-main.inner-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px 64px;
}

.site-footer {
  background-color: #1A3A5C;
  color: #ffffff;
  margin-top: 0;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px 32px;
}

.footer-brand {
  margin-bottom: 20px;
}

.footer-slogan {
  font-size: 18px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin-bottom: 24px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 14px;
  padding: 4px 0;
}

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

.copyright {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 0;
}

/* 面包屑 */

.breadcrumb-wrap {
  background-color: #F4F6F8;
  border-bottom: 1px solid #DCE1E6;
}

.breadcrumb-wrap nav.breadcrumb {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 24px;
}

.breadcrumb {
  font-size: 14px;
  color: #666666;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
}

.breadcrumb a {
  color: #1A3A5C;
}

.breadcrumb a:hover {
  color: #E8890C;
}

.breadcrumb-sep {
  color: #999999;
  margin: 0 4px;
}

.breadcrumb-current {
  color: #666666;
}

.breadcrumb ol {
  display: flex;
  gap: 4px;
  list-style: none;
}

.breadcrumb li + li::before {
  content: "/";
  color: #999999;
  margin-right: 4px;
}

/* 内页标题区 */

.page-header {
  margin-bottom: 12px;
}

.page-title {
  font-size: 32px;
  color: #1A3A5C;
  margin-bottom: 0;
}

.page-title-area {
  margin-bottom: 40px;
  padding-bottom: 20px;
  border-bottom: 1px solid #DCE1E6;
}

.page-title-area p {
  font-size: 16px;
  color: #555555;
  max-width: 800px;
  margin-bottom: 0;
}

.page-title-section {
  margin-bottom: 40px;
}

.page-intro {
  font-size: 16px;
  color: #555555;
  max-width: 800px;
}

/* 通用区块标题 */

.section-title {
  font-size: 24px;
  color: #1A3A5C;
  margin-bottom: 16px;
}

.section-desc {
  color: #555555;
  margin-bottom: 20px;
  max-width: 800px;
}

/* ==========================================================================
   Components
   ========================================================================== */

/* 按钮 */

.btn-guide,
.btn-support,
.btn-primary,
.btn-secondary,
.btn-back-home {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  text-align: center;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  min-height: 44px;
}

.btn-guide,
.btn-primary,
.btn-support,
.btn-back-home {
  background-color: #1A3A5C;
  color: #ffffff;
  border: 1px solid #1A3A5C;
}

.btn-guide:hover,
.btn-primary:hover,
.btn-support:hover,
.btn-back-home:hover {
  background-color: #E8890C;
  border-color: #E8890C;
  color: #ffffff;
}

.btn-secondary {
  background-color: transparent;
  color: #1A3A5C;
  border: 1px solid #1A3A5C;
}

.btn-secondary:hover {
  background-color: #1A3A5C;
  color: #ffffff;
  border-color: #1A3A5C;
}

/* 图文媒体块 */

.content-media {
  margin: 0 0 24px 0;
}

.content-media img {
  width: 100%;
  height: auto;
  border-radius: 6px;
}

.content-media figcaption {
  font-size: 13px;
  color: #888888;
  padding: 8px 4px 0;
}

/* 内容相关链接 */

.related-links {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 16px;
  border-top: 1px solid #DCE1E6;
}

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: #1A3A5C;
}

.related-links-item {
  font-size: 14px;
  color: #1A3A5C;
  padding: 6px 12px;
  background-color: #F4F6F8;
  border-radius: 4px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.related-links-item:hover {
  background-color: #1A3A5C;
  color: #ffffff;
}

/* 表格通用 */

.table-wrap,
.table-wrapper {
  overflow-x: auto;
  margin-bottom: 24px;
  border: 1px solid #DCE1E6;
  border-radius: 6px;
}

.compare-table,
.case-result-table {
  min-width: 640px;
  background-color: #ffffff;
}

.compare-table th,
.compare-table td,
.case-result-table th,
.case-result-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid #DCE1E6;
  font-size: 14px;
  vertical-align: top;
}

.compare-table thead th,
.case-result-table thead th {
  background-color: #F4F6F8;
  color: #1A3A5C;
  font-weight: 600;
  white-space: nowrap;
}

.compare-table tbody tr:last-child td,
.case-result-table tbody tr:last-child td {
  border-bottom: none;
}

.compare-table tbody tr:hover,
.case-result-table tbody tr:hover {
  background-color: #F9FAFB;
}

/* 警示框 */

.warning-item {
  background-color: #FFF8F0;
  border-left: 4px solid #E8890C;
  padding: 16px 20px;
  margin-bottom: 16px;
  border-radius: 0 6px 6px 0;
}

.warning-item h3 {
  color: #B45F00;
  font-size: 16px;
  margin-bottom: 6px;
}

.warning-item p {
  color: #555555;
  margin-bottom: 0;
  font-size: 15px;
}

/* ==========================================================================
   Pages
   ========================================================================== */

/* --------------------------------------------------------------------------
   首页
   -------------------------------------------------------------------------- */

.home-main {
  background-color: #ffffff;
}

/* Hero 首屏 */

.hero-section {
  background-color: #F4F6F8;
  border-bottom: 1px solid #DCE1E6;
}

.hero-grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 56px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.hero-service-cards {
  grid-column: 1;
}

.hero-service-cards h1 {
  font-size: 32px;
  color: #1A3A5C;
  margin-bottom: 12px;
}

.hero-intro {
  font-size: 16px;
  color: #555555;
  margin-bottom: 24px;
  max-width: 560px;
}

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

.service-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background-color: #ffffff;
  border: 1px solid #DCE1E6;
  border-radius: 8px;
  padding: 20px;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.service-card:hover {
  border-color: #1A3A5C;
  box-shadow: 0 4px 16px rgba(26, 58, 92, 0.08);
}

.service-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background-color: #1A3A5C;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.service-card h2 {
  font-size: 18px;
  color: #1A3A5C;
  margin-bottom: 4px;
}

.service-card p {
  font-size: 14px;
  color: #666666;
  margin-bottom: 0;
  line-height: 1.5;
}

.hero-news {
  grid-column: 2;
  grid-row: 1;
  background-color: #ffffff;
  border: 1px solid #DCE1E6;
  border-radius: 8px;
  padding: 24px;
}

.hero-news h2 {
  font-size: 20px;
  color: #1A3A5C;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid #F0F2F4;
}

.news-item {
  display: flex;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid #F4F6F8;
}

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

.news-item img {
  width: 96px;
  height: 64px;
  object-fit: cover;
  border-radius: 4px;
  flex-shrink: 0;
}

.news-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.news-text strong {
  font-size: 15px;
  color: #1A3A5C;
  line-height: 1.4;
}

.news-text span {
  font-size: 13px;
  color: #888888;
}

.hero-query {
  grid-column: 2;
  grid-row: 2;
  background-color: #ffffff;
  border: 1px solid #DCE1E6;
  border-radius: 8px;
  padding: 24px;
}

.hero-query h2 {
  font-size: 20px;
  color: #1A3A5C;
  margin-bottom: 8px;
}

.hero-query p {
  font-size: 14px;
  color: #666666;
  margin-bottom: 16px;
}

.btn-guide {
  margin-top: 4px;
}

/* 参观信息 / 服务承诺 */

.service-commitment {
  background-color: #ffffff;
  padding: 56px 24px;
}

.commitment-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.commitment-inner h2 {
  font-size: 24px;
  color: #1A3A5C;
  margin-bottom: 12px;
  text-align: center;
}

.commitment-inner > p {
  font-size: 16px;
  color: #555555;
  max-width: 720px;
  margin: 0 auto 32px;
  text-align: center;
}

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

.commitment-list li {
  background-color: #F4F6F8;
  border-radius: 8px;
  padding: 20px;
  font-size: 14px;
  color: #444444;
  line-height: 1.6;
  border-left: 3px solid #E8890C;
}

/* 案例展品交替 */

.case-showcase {
  background-color: #F4F6F8;
  padding: 56px 24px;
}

.case-showcase > h2 {
  max-width: 1200px;
  margin: 0 auto 40px;
  font-size: 24px;
  color: #1A3A5C;
  text-align: center;
}

.showcase-item {
  max-width: 1200px;
  margin: 0 auto 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
  background-color: #ffffff;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #DCE1E6;
}

.showcase-item:last-child {
  margin-bottom: 0;
}

.showcase-media {
  overflow: hidden;
}

.showcase-media img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.showcase-info {
  padding: 24px 32px;
}

.showcase-info h3 {
  font-size: 20px;
  color: #1A3A5C;
  margin-bottom: 12px;
}

.showcase-info p {
  font-size: 15px;
  color: #555555;
  margin-bottom: 12px;
  line-height: 1.7;
}

.showcase-info a {
  color: #E8890C;
  font-size: 15px;
  font-weight: 600;
}

.showcase-info a:hover {
  color: #1A3A5C;
}

.showcase-item.reverse {
  grid-template-columns: 1fr 1fr;
}

.showcase-item.reverse .showcase-media {
  order: 2;
}

.showcase-item.reverse .showcase-info {
  order: 1;
}

/* 制作流程概览 */

.process-overview {
  background-color: #ffffff;
  padding: 56px 24px;
}

.process-overview > h2 {
  text-align: center;
  font-size: 24px;
  color: #1A3A5C;
  margin-bottom: 12px;
}

.process-overview > p {
  text-align: center;
  font-size: 16px;
  color: #555555;
  max-width: 640px;
  margin: 0 auto 40px;
}

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

.step-item {
  background-color: #F4F6F8;
  border-radius: 8px;
  padding: 24px 20px;
  text-align: center;
  position: relative;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: #1A3A5C;
  color: #ffffff;
  font-size: 18px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 12px;
}

.step-item h3 {
  font-size: 17px;
  color: #1A3A5C;
  margin-bottom: 8px;
}

.step-item p {
  font-size: 14px;
  color: #666666;
  margin-bottom: 0;
  line-height: 1.5;
}

/* 支持中心引导 */

.support-guide {
  background-color: #1A3A5C;
  padding: 56px 24px;
  color: #ffffff;
}

.support-guide h2 {
  font-size: 24px;
  color: #ffffff;
  text-align: center;
  margin-bottom: 12px;
}

.support-guide > p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  text-align: center;
  max-width: 640px;
  margin: 0 auto 32px;
}

.faq-links {
  max-width: 800px;
  margin: 0 auto 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.faq-links a {
  display: block;
  background-color: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 6px;
  padding: 16px 20px;
  color: #ffffff;
  font-size: 15px;
  transition: background-color 0.2s ease;
}

.faq-links a:hover {
  background-color: rgba(255, 255, 255, 0.2);
  color: #ffffff;
}

.btn-support {
  display: block;
  max-width: 220px;
  margin: 0 auto;
  background-color: #E8890C;
  border-color: #E8890C;
  color: #ffffff;
}

.btn-support:hover {
  background-color: #ffffff;
  border-color: #ffffff;
  color: #1A3A5C;
}

/* --------------------------------------------------------------------------
   常见需求页
   -------------------------------------------------------------------------- */

.page-demands .demand-category-grid {
  margin-bottom: 48px;
}

.category-card-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.category-card {
  background-color: #ffffff;
  border: 1px solid #DCE1E6;
  border-radius: 8px;
  padding: 24px;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.category-card:hover {
  border-color: #1A3A5C;
  box-shadow: 0 4px 16px rgba(26, 58, 92, 0.08);
}

.category-card h3 {
  font-size: 18px;
  color: #1A3A5C;
  margin-bottom: 8px;
}

.category-card p {
  font-size: 14px;
  color: #666666;
  margin-bottom: 12px;
  line-height: 1.5;
}

.category-card a {
  font-size: 14px;
  color: #E8890C;
  font-weight: 600;
}

.category-card a:hover {
  color: #1A3A5C;
}

.demand-detail-list {
  margin-bottom: 48px;
}

.demand-group {
  margin-bottom: 32px;
  padding: 24px;
  background-color: #ffffff;
  border: 1px solid #DCE1E6;
  border-radius: 8px;
}

.demand-group h3 {
  font-size: 20px;
  color: #1A3A5C;
  margin-bottom: 8px;
  padding-bottom: 12px;
  border-bottom: 1px solid #F0F2F4;
}

.demand-group > p {
  font-size: 15px;
  color: #555555;
  margin-bottom: 16px;
  margin-top: 12px;
}

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

.demand-item-list li {
  background-color: #F4F6F8;
  border-radius: 6px;
  padding: 16px;
}

.demand-item-list h4 {
  font-size: 15px;
  color: #1A3A5C;
  margin-bottom: 6px;
}

.demand-item-list p {
  font-size: 14px;
  color: #666666;
  margin-bottom: 8px;
  line-height: 1.5;
}

.demand-item-list a {
  font-size: 14px;
  color: #E8890C;
  font-weight: 600;
}

.demand-item-list a:hover {
  color: #1A3A5C;
}

.demand-guide-prompt {
  background-color: #F4F6F8;
  border-radius: 8px;
  padding: 32px;
  text-align: center;
}

.demand-guide-prompt .section-title {
  margin-bottom: 12px;
}

.demand-guide-prompt p {
  font-size: 15px;
  color: #555555;
  max-width: 640px;
  margin: 0 auto 24px;
}

.guide-prompt-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   解决方案页
   -------------------------------------------------------------------------- */

.page-layout.layout-with-aside {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 32px;
  align-items: start;
}

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

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

.solution-list {
  margin-bottom: 48px;
}

.solution-list > h2 {
  margin-bottom: 24px;
  font-size: 24px;
  color: #1A3A5C;
}

.solution-card {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 24px;
  background-color: #ffffff;
  border: 1px solid #DCE1E6;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
  transition: box-shadow 0.2s ease;
}

.solution-card:hover {
  box-shadow: 0 4px 16px rgba(26, 58, 92, 0.08);
}

.solution-card-media {
  overflow: hidden;
  border-radius: 6px;
}

.solution-card-media img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.solution-card-body {
  min-width: 0;
}

.solution-card-body h3 {
  font-size: 20px;
  color: #1A3A5C;
  margin-bottom: 8px;
}

.solution-goal {
  font-size: 14px;
  color: #E8890C;
  font-weight: 600;
  margin-bottom: 8px;
}

.solution-card-body p {
  font-size: 14px;
  color: #555555;
  line-height: 1.6;
  margin-bottom: 6px;
}

.service-compare {
  margin-bottom: 48px;
}

.service-compare h2 {
  margin-bottom: 12px;
}

.service-compare > p {
  color: #555555;
  margin-bottom: 20px;
}

.glossary-card {
  background-color: #F4F6F8;
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 24px;
}

.glossary-card h2 {
  font-size: 20px;
  color: #1A3A5C;
  margin-bottom: 8px;
}

.glossary-card > p {
  font-size: 14px;
  color: #666666;
  margin-bottom: 16px;
}

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

.glossary-item dt {
  font-size: 15px;
  font-weight: 700;
  color: #1A3A5C;
  margin-bottom: 4px;
}

.glossary-item dd {
  font-size: 14px;
  color: #666666;
  line-height: 1.5;
}

.sidebar-guide {
  background-color: #ffffff;
  border: 1px solid #DCE1E6;
  border-radius: 8px;
  padding: 24px;
}

.sidebar-guide h2 {
  font-size: 18px;
  color: #1A3A5C;
  margin-bottom: 8px;
}

.sidebar-guide p {
  font-size: 14px;
  color: #666666;
  margin-bottom: 16px;
}

/* --------------------------------------------------------------------------
   操作指南页
   -------------------------------------------------------------------------- */

.page-guide .process-section {
  margin-bottom: 48px;
}

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

.section-heading h2 {
  font-size: 24px;
  color: #1A3A5C;
  margin-bottom: 8px;
}

.section-heading p {
  font-size: 15px;
  color: #555555;
  max-width: 720px;
}

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

.process-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 20px;
  background-color: #ffffff;
  border: 1px solid #DCE1E6;
  border-radius: 8px;
  padding: 24px;
}

.process-number {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  color: #E8890C;
  line-height: 1;
  padding-top: 4px;
}

.process-content h3 {
  font-size: 19px;
  color: #1A3A5C;
  margin-bottom: 8px;
}

.process-content p {
  font-size: 15px;
  color: #555555;
  line-height: 1.6;
  margin-bottom: 8px;
}

.checklist-section {
  margin-bottom: 48px;
}

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

.checklist-item {
  background-color: #F4F6F8;
  border-radius: 6px;
  padding: 16px 20px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.checklist-item::before {
  content: "☐";
  font-size: 18px;
  color: #1A3A5C;
  flex-shrink: 0;
  line-height: 1.4;
}

.checklist-item h3 {
  font-size: 15px;
  color: #1A3A5C;
  margin-bottom: 4px;
}

.checklist-item p {
  font-size: 14px;
  color: #666666;
  margin-bottom: 0;
  line-height: 1.5;
}

.guide-figure {
  margin-bottom: 48px;
}

.guide-figure img {
  width: 100%;
  height: auto;
  max-height: 400px;
  object-fit: cover;
  border-radius: 8px;
}

.guide-figure figcaption {
  font-size: 13px;
  color: #888888;
  padding: 8px 4px 0;
}

.warning-section {
  margin-bottom: 48px;
}

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

.related-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid #DCE1E6;
}

.related-nav a {
  display: inline-block;
  padding: 10px 20px;
  background-color: #F4F6F8;
  border-radius: 6px;
  font-size: 14px;
  color: #1A3A5C;
  font-weight: 600;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.related-nav a:hover {
  background-color: #1A3A5C;
  color: #ffffff;
}

/* --------------------------------------------------------------------------
   案例展示页
   -------------------------------------------------------------------------- */

.case-filter-section {
  margin-bottom: 40px;
}

.filter-btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.filter-btn {
  padding: 10px 24px;
  background-color: #ffffff;
  border: 1px solid #DCE1E6;
  border-radius: 6px;
  font-size: 14px;
  color: #1A3A5C;
  font-weight: 600;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  min-height: 44px;
}

.filter-btn:hover {
  border-color: #1A3A5C;
  background-color: #F4F6F8;
}

.filter-btn.is-active {
  background-color: #1A3A5C;
  color: #ffffff;
  border-color: #1A3A5C;
}

.case-grid-section {
  margin-bottom: 48px;
}

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

.case-card {
  background-color: #ffffff;
  border: 1px solid #DCE1E6;
  border-radius: 8px;
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

.case-card:hover {
  box-shadow: 0 4px 16px rgba(26, 58, 92, 0.08);
}

.case-figure {
  overflow: hidden;
}

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

.case-body {
  padding: 20px;
}

.case-tag {
  display: inline-block;
  font-size: 12px;
  color: #E8890C;
  background-color: #FFF8F0;
  border-radius: 4px;
  padding: 4px 10px;
  margin-bottom: 12px;
  font-weight: 600;
}

.case-title {
  font-size: 18px;
  color: #1A3A5C;
  margin-bottom: 8px;
}

.case-desc {
  font-size: 14px;
  color: #666666;
  line-height: 1.5;
  margin-bottom: 12px;
}

.case-approach {
  font-size: 14px;
  color: #555555;
  line-height: 1.5;
  margin-bottom: 0;
}

.case-approach strong {
  color: #1A3A5C;
  font-weight: 600;
}

.case-table-section {
  margin-bottom: 48px;
}

.case-cta-section {
  background-color: #F4F6F8;
  border-radius: 8px;
  padding: 32px;
  text-align: center;
}

.case-cta-section .section-title {
  margin-bottom: 12px;
}

.case-cta-section .section-desc {
  margin: 0 auto 24px;
  max-width: 640px;
}

.cta-link-group {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-link {
  display: inline-block;
  padding: 10px 24px;
  background-color: #ffffff;
  border: 1px solid #DCE1E6;
  border-radius: 6px;
  font-size: 14px;
  color: #1A3A5C;
  font-weight: 600;
  min-height: 44px;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.cta-link:hover {
  background-color: #1A3A5C;
  color: #ffffff;
  border-color: #1A3A5C;
}

/* --------------------------------------------------------------------------
   支持中心页
   -------------------------------------------------------------------------- */

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

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

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

.faq-group-section {
  margin-bottom: 24px;
}

.faq-group-section > h2 {
  font-size: 24px;
  color: #1A3A5C;
  margin-bottom: 16px;
}

.faq-group {
  margin-bottom: 32px;
}

.faq-group-title {
  font-size: 19px;
  color: #1A3A5C;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid #F4F6F8;
}

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

.faq-item {
  border: 1px solid #DCE1E6;
  border-radius: 6px;
  background-color: #ffffff;
  overflow: hidden;
}

.faq-item summary {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  color: #1A3A5C;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 44px;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 20px;
  font-weight: 400;
  color: #1A3A5C;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.faq-item[open] summary {
  background-color: #F4F6F8;
}

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

.faq-answer {
  padding: 0 20px 16px;
  font-size: 14px;
  color: #555555;
  line-height: 1.6;
  background-color: #F4F6F8;
}

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

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

.support-entry-card {
  background-color: #F4F6F8;
  border-radius: 8px;
  padding: 24px;
}

.support-entry-card h2 {
  font-size: 20px;
  color: #1A3A5C;
  margin-bottom: 8px;
}

.support-entry-card > p {
  font-size: 14px;
  color: #666666;
  margin-bottom: 16px;
}

.support-entry-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.support-link-card {
  display: block;
  background-color: #ffffff;
  border: 1px solid #DCE1E6;
  border-radius: 6px;
  padding: 16px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.support-link-card:hover {
  border-color: #1A3A5C;
  box-shadow: 0 4px 12px rgba(26, 58, 92, 0.06);
}

.support-link-title {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: #1A3A5C;
  margin-bottom: 4px;
}

.support-link-desc {
  display: block;
  font-size: 13px;
  color: #888888;
  line-height: 1.4;
}

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

.error-main {
  background-color: #F4F6F8;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 70vh;
  padding: 48px 24px;
}

.error-panel {
  max-width: 560px;
  text-align: center;
  background-color: #ffffff;
  border: 1px solid #DCE1E6;
  border-radius: 8px;
  padding: 48px 32px;
}

.error-code {
  font-size: 72px;
  font-weight: 700;
  color: #1A3A5C;
  line-height: 1;
  margin-bottom: 16px;
}

.error-panel h1 {
  font-size: 28px;
  color: #1A3A5C;
  margin-bottom: 12px;
}

.error-lead {
  font-size: 16px;
  color: #555555;
  margin-bottom: 24px;
}

.btn-back-home {
  margin-bottom: 32px;
}

.error-help {
  text-align: left;
  border-top: 1px solid #F0F2F4;
  padding-top: 24px;
}

.error-help p {
  font-size: 14px;
  color: #666666;
  font-weight: 600;
  margin-bottom: 12px;
}

.error-help ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.error-help a {
  font-size: 14px;
  color: #1A3A5C;
}

.error-help a:hover {
  color: #E8890C;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

/* 平板及以下 */

@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-service-cards {
    grid-column: 1;
    grid-row: 1;
  }

  .hero-news {
    grid-column: 1;
    grid-row: 2;
  }

  .hero-query {
    grid-column: 1;
    grid-row: 3;
  }

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

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

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

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

  .page-layout.layout-with-aside {
    grid-template-columns: 1fr;
  }

  .sidebar-area {
    grid-row: auto;
  }

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

  .sidebar-right {
    grid-row: auto;
  }

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

  .solution-card-media img {
    height: 200px;
  }

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

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

  .showcase-item,
  .showcase-item.reverse {
    grid-template-columns: 1fr;
  }

  .showcase-item.reverse .showcase-media {
    order: 1;
  }

  .showcase-item.reverse .showcase-info {
    order: 2;
  }

  .showcase-media img {
    height: 260px;
  }

  .faq-links {
    grid-template-columns: 1fr;
  }
}

/* 手机 */

@media (max-width: 640px) {
  .header-inner {
    height: auto;
    padding: 12px 16px;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .main-nav {
    width: 100%;
    overflow-x: auto;
  }

  .main-nav ul {
    display: flex;
    flex-wrap: nowrap;
    gap: 2px;
    padding-bottom: 4px;
  }

  .main-nav a {
    padding: 8px 10px;
    font-size: 14px;
    white-space: nowrap;
  }

  .site-main.inner-main {
    padding: 24px 16px 48px;
  }

  .breadcrumb-wrap nav.breadcrumb {
    padding: 10px 16px;
  }

  h1 {
    font-size: 26px;
  }

  h2 {
    font-size: 21px;
  }

  h3 {
    font-size: 17px;
  }

  .hero-grid {
    padding: 32px 16px 40px;
  }

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

  .service-card {
    padding: 16px;
  }

  .news-item img {
    width: 80px;
    height: 56px;
  }

  .service-commitment {
    padding: 40px 16px;
  }

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

  .case-showcase {
    padding: 40px 16px;
  }

  .showcase-info {
    padding: 20px;
  }

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

  .process-overview {
    padding: 40px 16px;
  }

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

  .support-guide {
    padding: 40px 16px;
  }

  .faq-links {
    grid-template-columns: 1fr;
  }

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

  .demand-item-list {
    grid-template-columns: 1fr;
  }

  .demand-group {
    padding: 16px;
  }

  .demand-guide-prompt {
    padding: 24px 16px;
  }

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

  .btn-primary,
  .btn-secondary {
    display: block;
    width: 100%;
  }

  .solution-card {
    padding: 16px;
  }

  .solution-card-media img {
    height: 180px;
  }

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

  .process-number {
    justify-content: flex-start;
    font-size: 22px;
  }

  .checklist-item {
    padding: 14px 16px;
  }

  .filter-btn-group {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 8px;
  }

  .filter-btn {
    white-space: nowrap;
    flex-shrink: 0;
  }

  .case-card {
    margin-bottom: 0;
  }

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

  .case-cta-section {
    padding: 24px 16px;
  }

  .cta-link-group {
    flex-direction: column;
    align-items: stretch;
  }

  .cta-link {
    display: block;
    text-align: center;
  }

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

  .faq-answer {
    padding: 0 16px 14px;
  }

  .support-entry-card {
    padding: 20px;
  }

  .error-panel {
    padding: 32px 20px;
  }

  .error-code {
    font-size: 56px;
  }

  .footer-inner {
    padding: 32px 16px 24px;
  }

  .footer-links {
    gap: 8px 16px;
  }

  .related-links {
    padding: 16px;
  }
}

/* 超小屏 */

@media (max-width: 380px) {
  .main-nav a {
    padding: 6px 8px;
    font-size: 13px;
  }

  .news-item {
    flex-direction: column;
  }

  .news-item img {
    width: 100%;
    height: 120px;
  }

  .commitment-list li {
    padding: 16px;
  }
}