/* ==========================================================================
   51吃瓜在线今日吃瓜 - 整站样式表
   版本：1.0
   说明：覆盖全站 8 个页面（首页、服务方案、合作流程、项目归档、
         行业观察、团队职能、常见问题、404）的完整样式。
   视觉方向：黑白主体 + 深绿识别色，信息密度高，理性清爽。
   ========================================================================== */

/* ==========================================================================
   Base - 基础变量、重置、全局字体与颜色
   ========================================================================== */

:root {
  --color-ink: #131313;
  --color-bg-soft: #F5F5F3;
  --color-bg-white: #FFFFFF;
  --color-accent: #0E6E5A;
  --color-accent-soft: #E8F0ED;
  --color-accent-dark: #0A5445;
  --color-border: #E2E2DE;
  --color-text: #2C2C2C;
  --color-text-light: #6B6B66;

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

  --container-width: 1200px;
  --container-padding: 24px;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-pill: 999px;

  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;

  --shadow-card: 0 2px 8px rgba(19, 19, 19, 0.06);
  --shadow-card-hover: 0 6px 20px rgba(19, 19, 19, 0.1);
}

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

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

body {
  font-family: var(--font-family-base);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  background-color: var(--color-bg-soft);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul,
ol {
  list-style: none;
}

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

h1 {
  font-size: 28px;
  line-height: 1.3;
}

h2 {
  font-size: 22px;
  line-height: 1.35;
}

h3 {
  font-size: 18px;
  line-height: 1.4;
}

h4 {
  font-size: 16px;
  line-height: 1.5;
}

p {
  font-size: 16px;
  line-height: 1.75;
}

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

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

.site-main {
  flex: 1 0 auto;
  width: 100%;
}

.site-home {
  background-color: var(--color-bg-soft);
}

.site-inner {
  background-color: var(--color-bg-soft);
}

.inner-main {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding) 64px;
}

/* ==========================================================================
   Layout - 页头（全站统一）
   ========================================================================== */

.site-header {
  background-color: var(--color-bg-white);
  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 var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}

.brand-block {
  flex-shrink: 0;
}

.brand-link {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: 0.01em;
  line-height: 1.3;
}

.brand-slogan {
  font-size: 12px;
  color: var(--color-text-light);
  line-height: 1.4;
}

/* ==========================================================================
   Layout - 主导航（分组下拉菜单）
   ========================================================================== */

.main-nav {
  flex: 1;
  display: flex;
  justify-content: flex-end;
}

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

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 10px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast),
    color var(--transition-fast);
}

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

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

.has-dropdown {
  position: relative;
}

.dropdown-panel {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  min-width: 280px;
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card-hover);
  padding: 16px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal),
    visibility var(--transition-normal);
  z-index: 50;
}

.has-dropdown:hover .dropdown-panel,
.has-dropdown:focus-within .dropdown-panel {
  opacity: 1;
  visibility: visible;
}

.dropdown-desc {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}

.dropdown-links {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.dropdown-links a {
  display: block;
  padding: 6px 8px;
  font-size: 14px;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast),
    color var(--transition-fast);
}

.dropdown-links a:hover {
  background-color: var(--color-accent-soft);
  color: var(--color-accent);
}

/* ==========================================================================
   Layout - 面包屑（内页统一）
   ========================================================================== */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 20px 0 12px;
  font-size: 14px;
  color: var(--color-text-light);
}

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

.breadcrumb a:hover {
  color: var(--color-accent-dark);
  text-decoration: underline;
}

.breadcrumb-sep {
  color: var(--color-text-light);
  font-size: 13px;
}

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

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

.page-header {
  padding: 8px 0 20px;
}

.page-title {
  font-size: 28px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--color-ink);
}

.page-title-block {
  padding: 0 0 36px;
}

.page-title-block p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  max-width: 860px;
}

.page-title-area {
  padding: 0 0 36px;
}

.page-title-area .page-intro {
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  max-width: 860px;
}

.page-intro {
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  max-width: 860px;
}

.page-lead {
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  max-width: 860px;
}

/* ==========================================================================
   Layout - 页脚（全站统一）
   ========================================================================== */

.site-footer {
  background-color: var(--color-ink);
  color: #C8C8C4;
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding) 24px;
}

.footer-brand {
  margin-bottom: 32px;
}

.footer-brand-name {
  display: block;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-bg-white);
  margin-bottom: 8px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.6;
  color: #A8A8A2;
  max-width: 480px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 32px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-col h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-bg-white);
  margin-bottom: 14px;
}

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

.footer-col a {
  font-size: 14px;
  color: #A8A8A2;
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: var(--color-bg-white);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 13px;
  color: #8A8A84;
}

/* ==========================================================================
   Components - 通用组件
   ========================================================================== */

/* 区块头 */
.section-header {
  margin-bottom: 32px;
}

.section-header h2 {
  font-size: 22px;
  line-height: 1.35;
  margin-bottom: 10px;
}

.section-header p {
  font-size: 15px;
  color: var(--color-text-light);
  max-width: 720px;
  line-height: 1.7;
}

/* 文字链接 */
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-accent);
  transition: color var(--transition-fast);
}

.text-link:hover {
  color: var(--color-accent-dark);
  text-decoration: underline;
}

.text-link::after {
  content: "→";
  font-size: 14px;
  transition: transform var(--transition-fast);
}

.text-link:hover::after {
  transform: translateX(3px);
}

/* 按钮链接 */
.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  background-color: var(--color-accent);
  color: var(--color-bg-white);
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
  min-height: 44px;
}

.button-link:hover {
  background-color: var(--color-accent-dark);
  color: var(--color-bg-white);
}

/* 区块底部链接 */
.section-footer-link {
  margin-top: 28px;
  text-align: center;
}

/* 内容媒体（内页插图） */
.content-media {
  margin: 24px 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.content-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.content-media figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--color-text-light);
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.content-media-inline {
  max-width: 640px;
}

/* 相关链接导航 */
.related-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 16px;
  padding: 24px 0;
  margin-top: 40px;
  border-top: 1px solid var(--color-border);
}

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
}

.related-links-item {
  font-size: 14px;
  color: var(--color-accent);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.related-links-item:hover {
  background-color: var(--color-accent-soft);
  color: var(--color-accent-dark);
}

/* ==========================================================================
   Components - 首页：主视觉 + 场景选择
   ========================================================================== */

.hero-with-scene-select {
  background-color: var(--color-bg-white);
  border-bottom: 1px solid var(--color-border);
}

.hero-content {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 56px var(--container-padding) 48px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-text h1 {
  font-size: 32px;
  line-height: 1.25;
  margin-bottom: 14px;
  max-width: 560px;
}

.hero-lead {
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-text-light);
  margin-bottom: 28px;
  max-width: 520px;
}

.scene-select {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.scene-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: transform var(--transition-normal),
    box-shadow var(--transition-normal),
    border-color var(--transition-normal);
  min-height: 72px;
}

.scene-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-accent);
  background-color: var(--color-bg-white);
}

.scene-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
}

.scene-desc {
  font-size: 13px;
  line-height: 1.5;
  color: var(--color-text-light);
}

.hero-media {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.hero-media img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

/* ==========================================================================
   Components - 首页：核心事实条
   ========================================================================== */

.core-facts {
  background-color: var(--color-accent);
}

.facts-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px var(--container-padding);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.fact-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 8px 16px;
  border-left: 2px solid rgba(255, 255, 255, 0.3);
}

.fact-number {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-bg-white);
  line-height: 1.2;
}

.fact-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-bg-white);
}

.fact-detail {
  font-size: 13px;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.8);
}

/* ==========================================================================
   Components - 首页：服务分类入口
   ========================================================================== */

.service-categories {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 64px var(--container-padding) 24px;
}

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

.category-card {
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: box-shadow var(--transition-normal),
    transform var(--transition-normal);
}

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

.category-card img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.category-card h3 {
  font-size: 17px;
  font-weight: 600;
}

.category-card p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--color-text-light);
  flex-grow: 1;
}

/* ==========================================================================
   Components - 首页：项目归档摘要
   ========================================================================== */

.project-archive-summary {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding) 24px;
}

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

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

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

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

.archive-card .archive-type {
  display: inline-block;
  padding: 4px 10px;
  background-color: var(--color-accent-soft);
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-pill);
  margin-top: 16px;
  margin-left: 16px;
  align-self: flex-start;
}

.archive-card h3 {
  font-size: 17px;
  font-weight: 600;
  padding: 10px 16px 0;
}

.archive-card p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--color-text-light);
  padding: 8px 16px 0;
  flex-grow: 1;
}

.archive-card .text-link {
  margin: 12px 16px 16px;
}

/* ==========================================================================
   Components - 首页：合作流程概览
   ========================================================================== */

.process-preview {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding) 24px;
}

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

.step-item {
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  position: relative;
  transition: box-shadow var(--transition-normal);
}

.step-item:hover {
  box-shadow: var(--shadow-card-hover);
}

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

.step-item h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

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

/* ==========================================================================
   Components - 首页：下一屏预告
   ========================================================================== */

.next-screen-teaser {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding) 24px;
}

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

.teaser-item {
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.teaser-item h2 {
  font-size: 20px;
  font-weight: 700;
}

.teaser-item p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-light);
  flex-grow: 1;
}

/* ==========================================================================
   Components - 需求对接提示条（首页 + FAQ）
   ========================================================================== */

.contact-guidance {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding) 64px;
}

.guidance-inner {
  background-color: var(--color-accent-soft);
  border: 1px solid rgba(14, 110, 90, 0.2);
  border-radius: var(--radius-md);
  padding: 36px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.guidance-inner h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.guidance-inner p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text);
  max-width: 560px;
}

.guidance-links {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

/* ==========================================================================
   Pages - 服务方案页（酒店房型布局）
   ========================================================================== */

.page-services .page-title-block {
  padding-bottom: 32px;
}

.service-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 48px;
}

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

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

.card-media {
  overflow: hidden;
}

.card-media img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex-grow: 1;
}

.card-body h2 {
  font-size: 20px;
  font-weight: 700;
}

.service-intent {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-light);
}

.deliverables {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px 16px;
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-sm);
}

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

.deliverables li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background-color: var(--color-accent);
  border-radius: 50%;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-accent);
  margin-top: auto;
  padding-top: 8px;
}

.card-link::after {
  content: "→";
  transition: transform var(--transition-fast);
}

.card-link:hover::after {
  transform: translateX(3px);
}

/* 服务对比表 */
.service-comparison-table {
  margin-bottom: 48px;
}

.service-comparison-table h2 {
  font-size: 22px;
  margin-bottom: 20px;
}

.table-wrapper {
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow-x: auto;
}

.table-wrapper table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

.table-wrapper th {
  background-color: var(--color-ink);
  color: var(--color-bg-white);
  font-size: 14px;
  font-weight: 600;
  text-align: left;
  padding: 14px 16px;
  white-space: nowrap;
}

.table-wrapper td {
  padding: 14px 16px;
  font-size: 14px;
  line-height: 1.6;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

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

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

/* 服务 CTA 卡片 */
.service-cta-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}

.cta-card {
  background-color: var(--color-accent-soft);
  border: 1px solid rgba(14, 110, 90, 0.2);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cta-card h3 {
  font-size: 17px;
  font-weight: 600;
}

.cta-card p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--color-text);
  flex-grow: 1;
}

.cta-card a {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
}

/* ==========================================================================
   Pages - 合作流程页（横向时间线）
   ========================================================================== */

.page-process .page-title-block {
  padding-bottom: 32px;
}

.page-process .content-media-inline {
  margin-top: 20px;
}

.process-timeline {
  margin-bottom: 48px;
}

.timeline-intro {
  margin-bottom: 32px;
}

.timeline-intro h2 {
  font-size: 22px;
  margin-bottom: 10px;
}

.timeline-intro p {
  font-size: 15px;
  color: var(--color-text-light);
  max-width: 720px;
}

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

.timeline-stage {
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  position: relative;
  transition: box-shadow var(--transition-normal);
}

.timeline-stage:hover {
  box-shadow: var(--shadow-card-hover);
}

.stage-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.timeline-stage .stage-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: var(--color-accent);
  color: var(--color-bg-white);
  font-size: 16px;
  font-weight: 700;
  border-radius: var(--radius-pill);
  flex-shrink: 0;
}

.timeline-stage .stage-header h3 {
  font-size: 17px;
  font-weight: 600;
}

.timeline-stage .stage-desc {
  font-size: 14px;
  line-height: 1.65;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.stage-detail {
  padding: 12px;
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
}

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

.stage-detail h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 4px;
}

.stage-detail p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-light);
}

/* 配套说明 */
.supporting-notes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}

.note-card {
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.note-card h2 {
  font-size: 19px;
  font-weight: 700;
}

.note-card p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-light);
  flex-grow: 1;
}

.note-card-connect {
  border-top: 3px solid var(--color-accent);
}

.note-card-delivery {
  border-top: 3px solid var(--color-ink);
}

/* ==========================================================================
   Pages - 项目归档页（列表分组）
   ========================================================================== */

.page-archive .page-title-block {
  padding-bottom: 32px;
}

.archive-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 48px;
}

.archive-list .archive-card {
  display: grid;
  grid-template-columns: 320px 1fr;
  overflow: hidden;
}

.archive-card-media {
  overflow: hidden;
}

.archive-card-media img {
  width: 100%;
  height: 100%;
  min-height: 220px;
  object-fit: cover;
}

.archive-card-body {
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.archive-card-body .archive-type {
  display: inline-block;
  padding: 4px 12px;
  background-color: var(--color-accent-soft);
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-pill);
  align-self: flex-start;
}

.archive-card-body h2 {
  font-size: 19px;
  font-weight: 700;
}

.archive-context,
.archive-points,
.archive-result {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text);
}

.archive-points {
  padding: 10px 14px;
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-accent);
}

.archive-result {
  color: var(--color-text-light);
}

.archive-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  margin-top: auto;
  padding-top: 8px;
}

.archive-link::after {
  content: "→";
  transition: transform var(--transition-fast);
}

.archive-link:hover::after {
  transform: translateX(3px);
}

/* 关联服务入口 */
.related-service-links {
  margin-bottom: 24px;
}

.related-service-links h2 {
  font-size: 22px;
  margin-bottom: 10px;
}

.related-service-links > p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 24px;
  max-width: 720px;
}

.service-link-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.service-link-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px;
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-normal),
    box-shadow var(--transition-normal);
}

.service-link-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-card-hover);
}

.service-link-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-ink);
}

.service-link-desc {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-light);
}

/* ==========================================================================
   Pages - 行业观察页（时间线型内容）
   ========================================================================== */

.page-insights .page-title-area {
  padding-bottom: 32px;
}

.latest-timeline {
  margin-bottom: 48px;
}

.latest-timeline .section-title {
  font-size: 22px;
  margin-bottom: 20px;
}

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

.timeline-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

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

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

.timeline-date {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
}

.status-tag {
  display: inline-block;
  padding: 3px 10px;
  background-color: var(--color-accent-soft);
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-pill);
  align-self: flex-start;
}

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

.timeline-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-ink);
}

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

.timeline-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  align-self: flex-start;
}

/* 近期专题 */
.recent-topics {
  margin-bottom: 48px;
}

.recent-topics .section-title {
  font-size: 22px;
  margin-bottom: 20px;
}

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

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

.topic-card:hover {
  box-shadow: var(--shadow-card-hover);
}

.topic-media {
  overflow: hidden;
}

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

.topic-body {
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex-grow: 1;
}

.topic-title {
  font-size: 17px;
  font-weight: 600;
}

.topic-range {
  font-size: 14px;
  line-height: 1.65;
  color: var(--color-text-light);
  flex-grow: 1;
}

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

/* 未来计划 */
.future-plans {
  margin-bottom: 48px;
}

.future-plans .section-title {
  font-size: 22px;
  margin-bottom: 20px;
}

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

.plan-card {
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.plan-title {
  font-size: 16px;
  font-weight: 600;
}

.plan-desc {
  font-size: 14px;
  line-height: 1.65;
  color: var(--color-text-light);
  flex-grow: 1;
}

.plan-status {
  display: inline-block;
  padding: 3px 10px;
  background-color: var(--color-bg-soft);
  color: var(--color-text-light);
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius-pill);
  align-self: flex-start;
}

/* 行业观察引导侧栏 */
.insights-guide {
  background-color: var(--color-accent-soft);
  border: 1px solid rgba(14, 110, 90, 0.2);
  border-radius: var(--radius-md);
  padding: 28px;
  margin-bottom: 24px;
}

.guide-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.guide-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 16px;
}

.guide-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.guide-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  padding: 6px 0;
}

/* ==========================================================================
   Pages - 团队职能页（职能分组）
   ========================================================================== */

.page-team .page-title-block {
  padding-bottom: 32px;
}

.team-groups {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.team-group-card {
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: grid;
  grid-template-columns: 280px 1fr;
  overflow: hidden;
  transition: box-shadow var(--transition-normal);
}

.team-group-card:hover {
  box-shadow: var(--shadow-card-hover);
}

.team-group-media {
  overflow: hidden;
}

.team-group-media img {
  width: 100%;
  height: 100%;
  min-height: 200px;
  object-fit: cover;
}

.team-group-content {
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.team-group-content h2 {
  font-size: 20px;
  font-weight: 700;
}

.team-group-role {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
}

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

.team-group-responsibilities {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px 16px;
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-sm);
}

.team-group-responsibilities li {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text);
  position: relative;
  padding-left: 16px;
}

.team-group-responsibilities li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background-color: var(--color-accent);
  border-radius: 50%;
}

.team-group-links {
  display: flex;
  gap: 16px;
  margin-top: auto;
  padding-top: 12px;
}

.team-group-links a {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
}

/* ==========================================================================
   Pages - 常见问题页（折叠面板）
   ========================================================================== */

.page-faq .page-title-block {
  padding-bottom: 32px;
}

.page-faq .content-media-inline {
  margin-top: 20px;
}

.faq-panels {
  display: flex;
  flex-direction: column;
  gap: 32px;
  margin-bottom: 48px;
}

.faq-category-group {
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.faq-category-title {
  font-size: 18px;
  font-weight: 700;
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: 2px solid var(--color-accent);
}

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

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  cursor: pointer;
  list-style: none;
  user-select: none;
}

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

.faq-question:hover {
  color: var(--color-accent);
}

.faq-toggle-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  font-size: 16px;
  font-weight: 400;
  color: var(--color-accent);
  transition: transform var(--transition-fast),
    background-color var(--transition-fast);
}

.faq-toggle-icon::before {
  content: "+";
  line-height: 1;
}

.faq-item[open] .faq-toggle-icon {
  transform: rotate(45deg);
  background-color: var(--color-accent);
  color: var(--color-bg-white);
  border-color: var(--color-accent);
}

.faq-answer {
  padding: 0 0 20px;
}

.faq-answer p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-text);
  margin-bottom: 10px;
}

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

/* 需求对接引导卡片 */
.page-faq .contact-guidance {
  padding: 0 0 24px;
}

.guidance-card {
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.guidance-card h2 {
  font-size: 18px;
  font-weight: 700;
}

.guidance-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-light);
  flex-grow: 1;
}

.guidance-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  align-self: flex-start;
}

/* ==========================================================================
   Pages - 404 页面
   ========================================================================== */

.site-error {
  background-color: var(--color-bg-white);
}

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
}

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

.error-code {
  font-size: 72px;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 16px;
}

.error-content h1 {
  font-size: 24px;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-light);
  margin-bottom: 28px;
}

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

.btn-back {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  background-color: var(--color-accent);
  color: var(--color-bg-white);
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  min-height: 44px;
}

.btn-back:hover {
  background-color: var(--color-accent-dark);
  color: var(--color-bg-white);
}

.btn-services {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  background-color: transparent;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  min-height: 44px;
}

.btn-services:hover {
  background-color: var(--color-accent-soft);
}

.error-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.error-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-light);
}

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

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

/* 平板：≤1024px */
@media (max-width: 1024px) {
  .header-inner {
    flex-wrap: wrap;
    padding-top: 12px;
    padding-bottom: 12px;
  }

  .main-nav {
    order: 3;
    flex-basis: 100%;
    justify-content: flex-start;
    overflow-x: auto;
  }

  .nav-list {
    gap: 0;
    padding-bottom: 4px;
  }

  .dropdown-panel {
    position: static;
    transform: none;
    box-shadow: none;
    border: none;
    border-top: 1px solid var(--color-border);
    border-radius: 0;
    min-width: 0;
    opacity: 1;
    visibility: visible;
    padding: 8px 0 8px 16px;
  }

  .dropdown-desc {
    display: none;
  }

  .dropdown-links {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 4px;
  }

  .dropdown-links a {
    padding: 4px 10px;
    font-size: 13px;
  }

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

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

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

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

  .archive-list .archive-card {
    grid-template-columns: 240px 1fr;
  }

  .team-group-card {
    grid-template-columns: 220px 1fr;
  }
}

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

  .brand-slogan {
    display: none;
  }

  .main-nav {
    overflow-x: auto;
  }

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

  .hero-content {
    padding: 40px 20px 32px;
  }

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

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

  .scene-select {
    grid-template-columns: 1fr;
  }

  .scene-card {
    min-height: 60px;
  }

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

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

  .fact-item {
    border-left: none;
    border-bottom: 2px solid rgba(255, 255, 255, 0.3);
    padding: 12px 4px;
  }

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

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

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

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

  .guidance-inner {
    padding: 28px 24px;
    flex-direction: column;
    align-items: flex-start;
  }

  .guidance-links {
    width: 100%;
  }

  .guidance-links .button-link {
    width: 100%;
  }

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

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

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

  .supporting-notes {
    grid-template-columns: 1fr;
  }

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

  .archive-card-media img {
    height: 200px;
    min-height: 0;
  }

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

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

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

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

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

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

  .team-group-media img {
    height: 200px;
    min-height: 0;
  }

  .team-group-content {
    padding: 20px;
  }

  .footer-links {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }

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

/* 小屏手机：≤390px */
@media (max-width: 390px) {
  .inner-main {
    padding: 0 16px 48px;
  }

  .hero-content {
    padding: 32px 16px 28px;
  }

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

  .breadcrumb {
    padding-top: 16px;
  }

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

  .page-title-block {
    padding-bottom: 28px;
  }

  .card-body {
    padding: 20px;
  }

  .archive-card-body {
    padding: 20px;
  }

  .timeline-stage {
    padding: 20px 16px;
  }

  .faq-category-group {
    padding: 20px 16px;
  }

  .faq-question {
    font-size: 15px;
  }

  .error-main {
    padding: 60px 16px;
  }
}