:root {
  --brand: #077A70;
  --brand-dark: #065E56;
  --gold: #FF6B35;
  --text: #1A1A1A;
  --text-secondary: #666666;
  --text-muted: #999999;
  --bg: #FFFFFF;
  --bg-secondary: #F7F7F7;
  --border: #E5E5E5;
  --footer-bg: #1A1A1A;
  --hero-bg: #1a2332;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 50px;
}

/* Header */
.header {
  height: 80px;
  border-bottom: 1px solid var(--border);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo img {
  height: 48px;
  display: block;
}

.nav {
  display: flex;
  gap: 0;
  align-items: center;
}

.nav-item {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

.nav-item > a {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 15px;
  color: var(--text);
  padding: 28px 18px;
  transition: color 0.2s;
  white-space: nowrap;
}

.nav-item > a:hover {
  color: var(--brand);
}

.nav-item.has-dropdown > a::after {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  opacity: 0.6;
  transition: transform 0.2s;
}

.nav-item.has-dropdown:hover > a::after {
  transform: rotate(-135deg) translateY(2px);
  opacity: 1;
}

.nav a.active {
  color: var(--brand);
  font-weight: 600;
}

/* Dropdown */
.dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.12);
  border: 1px solid var(--border);
  padding: 20px 24px;
  min-width: 360px;
  display: flex;
  gap: 24px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
  z-index: 100;
}

.dropdown::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 12px;
  height: 12px;
  background: #fff;
  border-left: 1px solid var(--border);
  border-top: 1px solid var(--border);
}

.nav-item:hover > .dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.dropdown-col {
  flex: 1;
  min-width: 140px;
}

.dropdown-col h4 {
  font-size: 13px;
  font-weight: 700;
  color: var(--brand);
  margin: 0 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.dropdown-col a {
  display: block;
  font-size: 14px;
  color: var(--text);
  padding: 8px 0;
  transition: color 0.15s, padding-left 0.15s;
  white-space: nowrap;
}

.dropdown-col a:hover {
  color: var(--brand);
  padding-left: 6px;
}

.dropdown-sm {
  min-width: 200px;
  padding: 16px 20px;
}


.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--brand);
  color: #fff;
}

.btn-primary:hover {
  background: var(--brand-dark);
}

.btn-gold {
  background: var(--gold);
  color: #fff;
}

.btn-gold:hover {
  filter: brightness(1.05);
}

.btn-white {
  background: #fff;
  color: var(--brand);
}

.btn-lg {
  padding: 14px 32px;
  font-size: 16px;
}

/* Hero */
.hero {
  padding: 80px 0;
}

.hero-full {
  position: relative;
  color: #fff;
  text-align: center;
  padding: 120px 0;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('../images/hero-bg.png') center/cover no-repeat;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,35,50,0.92) 0%, rgba(26,35,50,0.82) 50%, rgba(26,35,50,0.92) 100%);
  z-index: 1;
}

.hero-full .hero-inner {
  position: relative;
  z-index: 2;
}

.hero-full .hero-title {
  color: #fff;
  margin: 0 auto 20px;
  max-width: 900px;
}

.hero-full .hero-subtitle {
  color: rgba(255,255,255,0.85);
  margin: 0 auto 32px;
  max-width: 900px;
  white-space: nowrap;
  text-align: justify;
  text-align-last: justify;
}

.hero-title {
  font-size: 48px;
  line-height: 1.2;
  font-weight: 700;
}

.hero-subtitle {
  font-size: 20px;
  color: var(--text-secondary);
}

.search-bar {
  display: flex;
  align-items: center;
  max-width: 640px;
  height: 56px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
  margin: 0 auto 20px;
}

.search-bar-light {
  background: rgba(255,255,255,0.95);
  border-color: rgba(255,255,255,0.3);
}

.search-bar input {
  flex: 1;
  border: none;
  outline: none;
  padding: 0 12px;
  font-size: 15px;
  color: var(--text);
  background: transparent;
}

.search-bar input::placeholder {
  color: var(--text-muted);
}

.search-bar .btn {
  height: 40px;
  padding: 0 24px;
}

.hero-image {
  flex: 0 0 500px;
  border-radius: 12px;
  overflow: hidden;
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

.stats {
  display: flex;
  gap: 40px;
  margin-top: 40px;
  justify-content: center;
}

.stats-light .stat-num {
  color: var(--gold);
}

.stats-light .stat-label {
  color: rgba(255,255,255,0.75);
}

.stat-num {
  font-size: 32px;
  font-weight: 700;
  color: var(--brand);
  line-height: 1.1;
}

.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
}

/* Topic Badge & Values */
.topic-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 20px;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  color: #fff;
  font-size: 14px;
  margin-bottom: 24px;
}

.topic-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
}

.hero-values {
  display: flex;
  gap: 24px;
  justify-content: center;
  margin: 28px 0;
  flex-wrap: wrap;
}

.hero-value {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,0.8);
}

.hero-value i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
}

/* Topic Intro */
.topic-intro {
  background: var(--bg-secondary);
  padding: 80px 0;
}

.intro-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}

.intro-label {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 4px;
  background: #FEF2F2;
  color: var(--brand);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 12px;
}

.intro-title {
  font-size: 32px;
  font-weight: 700;
  margin: 0 0 12px;
}

.intro-desc {
  font-size: 16px;
  color: var(--text-secondary);
  margin: 0;
}

.intro-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.intro-card {
  background: #fff;
  border-radius: 12px;
  padding: 28px;
  border: 1px solid var(--border);
}

.intro-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 8px;
}

.intro-card p {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.6;
}

.intro-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--brand);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 16px;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 12px;
  padding: 40px 0 30px;
  flex-wrap: wrap;
}

.tab {
  padding: 10px 20px;
  border-radius: 20px;
  font-size: 14px;
  background: var(--bg-secondary);
  color: var(--text);
}

.tab:hover {
  background: #eee;
}

.tab.active {
  background: var(--brand);
  color: #fff;
  font-weight: 600;
}

/* Section */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

/* Carousel */
.carousel-controls {
  display: flex;
  align-items: center;
  gap: 16px;
}

.carousel-arrow {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: var(--bg-secondary);
  color: var(--text);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.carousel-arrow:hover {
  background: var(--brand);
  color: #fff;
}

.carousel-indicators {
  display: flex;
  align-items: center;
  gap: 8px;
}

.carousel-dot {
  width: 6px;
  height: 6px;
  border-radius: 3px;
  background: #d9d9d9;
  transition: all 0.3s;
  cursor: pointer;
}

.carousel-dot.active {
  width: 24px;
  background: var(--brand);
}

.carousel {
  overflow: hidden;
}

.carousel-track {
  display: flex;
  gap: 24px;
  transition: transform 0.4s ease;
}

.carousel-track .card {
  flex: 0 0 calc(25% - 18px);
  min-width: 280px;
}

@media (max-width: 1024px) {
  .carousel-track .card {
    flex: 0 0 calc(33.333% - 16px);
  }
}

@media (max-width: 768px) {
  .carousel-controls {
    gap: 10px;
  }

  .section-header .section-link {
    display: none;
  }

  .carousel-track .card {
    flex: 0 0 calc(50% - 12px);
  }
}

@media (max-width: 480px) {
  .carousel-track .card {
    flex: 0 0 100%;
  }
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  margin: 0;
}

.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  margin: 0;
}

.section-link {
  font-size: 15px;
  font-weight: 600;
  color: var(--brand);
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

/* 本周聚焦样式（4 列深色卡，1 排 4 个） */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

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

@media (max-width: 600px) {
  .featured-grid {
    grid-template-columns: 1fr;
  }
}

.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

.card-dark {
  background: #1a2332;
  border-color: rgba(255,255,255,0.1);
  color: #fff;
}

.card-dark:hover {
  background: #212c3d;
}

.card-dark .card-title {
  color: #fff;
}

.card-dark .card-desc {
  color: rgba(255,255,255,0.7);
}

.tag {
  display: inline-flex;
  align-self: flex-start;
  padding: 6px 12px;
  border-radius: 4px;
  background: #FEF2F2;
  color: var(--brand);
  font-size: 12px;
  font-weight: 600;
}

.tag-light {
  background: rgba(255,255,255,0.15);
  color: #fff;
}

.card-title {
  font-size: 20px;
  font-weight: 700;
  margin: 0;
}

.card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
}

.card-metric {
  font-size: 14px;
  font-weight: 600;
  color: var(--gold);
}

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

.card-dark .card-link {
  color: var(--gold);
}

/* All cases */
.all-cases {
  background: var(--bg-secondary);
  padding: 80px 0;
  margin-top: 60px;
}

.all-cases .section-header {
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 40px;
}

.category {
  background: #fff;
  border-radius: 12px;
  padding: 28px;
  margin-bottom: 24px;
  border: 1px solid var(--border);
}

.category-header {
  margin-bottom: 20px;
}

.category-title {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 6px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.category-count {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: var(--brand);
  padding: 2px 10px;
  border-radius: 12px;
}

.category-sub {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
}

.company-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.company-item {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: 20px;
  background: var(--bg-secondary);
  color: var(--text);
  font-size: 14px;
  transition: background 0.2s;
}

.company-item:hover {
  background: var(--brand);
  color: #fff;
}

/* Topics */
.topic-card {
  min-height: 200px;
}

.topic-icon {
  width: 48px;
  height: 48px;
  border-radius: 24px;
  background: #FEF2F2;
  color: var(--brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
}

/* CTA */
.cta-section {
  background: var(--brand);
  color: #fff;
  padding: 80px 0 64px;
  text-align: center;
}

.cta-title {
  font-size: 36px;
  font-weight: 700;
  margin: 0 0 16px;
  line-height: 1.3;
}

.cta-subtitle {
  font-size: 18px;
  opacity: 0.85;
  margin: 0 0 32px;
}

.cta-contact {
  margin-top: 28px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.8);
}

.cta-contact::before {
  content: "";
  display: block;
  width: 40px;
  height: 1px;
  background: rgba(255, 255, 255, 0.3);
  margin: 0 auto 16px;
}

.btn-white {
  background: #fff;
  color: var(--brand);
}

.btn-white:hover {
  background: rgba(255, 255, 255, 0.92);
  color: var(--brand-dark);
}

/* Footer */
.footer {
  background: var(--footer-bg);
  color: #fff;
  padding: 60px 0 30px;
}

.footer-main {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand {
  flex: 2 1 220px;
  min-width: 180px;
}

.footer-brand p {
  margin: 8px 0 0;
  color: var(--text-muted);
  font-size: 14px;
}

.footer-col {
  flex: 1 1 130px;
  min-width: 130px;
}

.footer-col h4 {
  font-size: 14px;
  margin: 0 0 14px;
  color: #fff;
}

.footer-col a,
.footer-col p {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin: 0 0 8px;
  line-height: 1.5;
}

.footer-col a:hover {
  color: #fff;
}

.footer-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 48px;
  padding: 24px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 14px;
  color: var(--text-muted);
}

.footer-contact strong {
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  margin-left: 4px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 24px;
  font-size: 13px;
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--text-muted);
  margin-left: 16px;
}

.footer-bottom a:hover {
  color: #fff;
}

/* Case page */
.breadcrumb {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.case-header {
  padding: 60px 0 40px;
}

.case-title {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 12px;
}

.case-conclusion {
  font-size: 18px;
  color: var(--text-secondary);
  margin: 0 0 24px;
}

.case-stats {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.case-stat {
  background: var(--bg-secondary);
  padding: 16px 20px;
  border-radius: 8px;
  min-width: 140px;
}

.case-stat-num {
  font-size: 24px;
  font-weight: 700;
  color: var(--brand);
}

.case-stat-label {
  font-size: 13px;
  color: var(--text-secondary);
}

/* Case Hero */
.case-hero {
  position: relative;
  color: #fff;
  text-align: center;
  padding: 120px 0;
  overflow: hidden;
}

.case-hero-inner {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin: 0 auto;
}

.case-hero .breadcrumb {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 16px;
}

.case-hero-tags {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 20px;
}

.case-hero-tag {
  display: inline-flex;
  padding: 6px 12px;
  border-radius: 4px;
  background: rgba(255,255,255,0.15);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
}

.case-hero-tag-gold {
  background: rgba(201,162,39,0.2);
  color: var(--gold);
}

.case-hero-title {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 16px;
}

.case-hero-subtitle {
  font-size: 20px;
  color: rgba(255,255,255,0.85);
  line-height: 1.6;
  margin: 0 0 32px;
}

.case-hero-stats {
  display: flex;
  gap: 48px;
  justify-content: center;
  margin-bottom: 32px;
}

.case-hero-stat-num {
  font-size: 32px;
  font-weight: 700;
  color: var(--gold);
  line-height: 1.1;
}

.case-hero-stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
}

/* TOC */
.toc {
  border-bottom: 1px solid var(--border);
  background: #fff;
}

.toc .container {
  display: flex;
  gap: 12px;
  padding: 20px 0;
  flex-wrap: wrap;
  max-width: 900px;
}

.toc a {
  padding: 10px 18px;
  border-radius: 20px;
  border: 1px solid var(--border);
  font-size: 14px;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.toc a:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.toc a.active {
  background: #FEF2F2;
  border-color: var(--brand);
  color: var(--brand);
  font-weight: 600;
}

/* Article */
.article-main {
  padding: 40px 0 60px;
}

.article-content {
  max-width: 900px;
}

.article-section {
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
}

.article-section:last-of-type {
  border-bottom: none;
}

.section-label {
  display: inline-flex;
  padding: 4px 12px;
  border-radius: 4px;
  background: #FEF2F2;
  color: var(--brand);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 12px;
}

.article-section h2 {
  font-size: 28px;
  font-weight: 700;
  margin: 0 0 16px;
  color: var(--text);
}

.article-section h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 24px 0 12px;
  color: var(--text);
}

.article-section p {
  font-size: 16px;
  color: var(--text-secondary);
  margin: 0 0 16px;
  line-height: 1.8;
}

.article-list {
  margin: 0 0 16px;
  padding-left: 0;
  list-style: none;
  color: var(--text-secondary);
}

.article-list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 12px;
  line-height: 1.6;
}

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

.article-list li strong {
  color: var(--text);
}

.article-section blockquote {
  background: #FEF2F2;
  border-radius: 8px;
  padding: 24px;
  color: var(--brand);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.6;
  margin: 24px 0 0;
}

/* Section Lead - 本章导读 */
.section-lead {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: linear-gradient(90deg, #FEF2F2 0%, #FFF1E8 100%);
  border-left: 3px solid var(--brand);
  padding: 14px 18px;
  border-radius: 0 8px 8px 0;
  margin: 16px 0 24px;
  font-weight: 500;
}

/* Section Figure - 章节配图 */
.section-figure {
  margin: 28px 0;
  text-align: center;
}

.section-figure img {
  width: 100%;
  max-width: 720px;
  max-height: 360px;
  height: auto;
  object-fit: cover;
  display: block;
  margin: 0 auto;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.section-figure figcaption {
  margin-top: 12px;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Key Takeaways - 要点启示 */
.key-takeaways {
  background: #fff;
  border: 1px solid var(--border);
  border-left: 4px solid var(--brand);
  border-radius: 12px;
  padding: 24px 28px;
  margin: 32px 0 0;
  box-shadow: 0 4px 20px rgba(192, 0, 0, 0.06);
}

.key-takeaways-title {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--brand);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 4px;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.key-takeaways-title::before {
  content: "★";
  color: var(--gold);
  font-size: 12px;
}

.key-takeaways ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.key-takeaways li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  margin-bottom: 12px;
}

.key-takeaways li:last-child {
  margin-bottom: 0;
}

.key-takeaways li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 1px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(201, 162, 39, 0.12);
  color: var(--gold);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.key-takeaways li strong {
  color: var(--brand);
}

/* Measure - 关键举措子模块 */
.measure {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px 32px;
  margin: 24px 0;
  position: relative;
  transition: box-shadow 0.2s;
}

.measure:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
}

.measure-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--border);
}

.measure-num {
  flex: 0 0 40px;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--brand);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
}

.measure-head h3 {
  font-size: 19px;
  font-weight: 700;
  margin: 0;
  color: var(--text);
}

.measure-body p:first-of-type {
  margin-top: 0;
}

.measure-body .article-list {
  margin-top: 12px;
}

/* Principle tagline - 顶层设计金句 */
.principle-tagline {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed rgba(201, 162, 39, 0.3);
  font-size: 14px;
  color: var(--gold);
  font-weight: 600;
  line-height: 1.6;
}

/* Insight action - 启示行动建议 */
.insight-action {
  margin-top: 12px;
  padding: 12px 14px;
  background: rgba(192, 0, 0, 0.04);
  border-radius: 6px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.insight-action strong {
  color: var(--brand);
}

/* Hero stat unit - Hero 数字单位 */
.case-hero-stat-unit {
  font-size: 18px;
  font-weight: 500;
  margin-left: 2px;
  color: rgba(255, 255, 255, 0.8);
}

/* Flow Chart */
.flow-chart {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 24px;
  background: var(--bg-secondary);
  border-radius: 12px;
  margin: 20px 0 24px;
  overflow-x: auto;
}

.flow-step {
  flex: 0 0 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 16px;
  background: #fff;
  border-radius: 8px;
  text-align: center;
  font-size: 14px;
  color: var(--text);
}

.flow-step-num {
  font-size: 24px;
  font-weight: 700;
  color: var(--brand);
}

.flow-arrow {
  font-size: 20px;
  color: var(--gold);
}

/* Insights */
.section-insights {
  background: #fff;
}

.insight-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.insight-card {
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 20px;
}

.insight-num {
  font-size: 28px;
  font-weight: 700;
  color: var(--brand);
  margin-bottom: 8px;
}

.insight-card h4 {
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--text);
}

.insight-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* Grid utilities */
.grid-2col {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3col {
  grid-template-columns: repeat(3, 1fr);
}

/* Challenges & Principles (3 张默认 1 排，4-5 张加 .grid-2col) */
.challenge-grid,
.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 24px 0 0;
}

.challenge-grid.grid-2col,
.principle-grid.grid-2col,
.insight-grid.grid-2col,
.outcome-stats.grid-2col {
  grid-template-columns: repeat(2, 1fr);
}

.challenge-card,
.principle-card {
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 24px;
  border-left: 4px solid var(--brand);
}

.principle-card {
  border-left-color: var(--gold);
}

.challenge-card h4,
.principle-card h4 {
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--text);
}

.challenge-card p,
.principle-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

.challenge-num,
.principle-num {
  font-size: 24px;
  font-weight: 700;
  color: var(--brand);
  margin-bottom: 8px;
}

.principle-num {
  color: var(--gold);
}

/* Outcomes (3 张默认 1 排，4-5 张加 .grid-2col) */
.outcome-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 24px 0;
}

.outcome-stat {
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 24px;
  text-align: center;
}

.outcome-stat-num {
  font-size: 32px;
  font-weight: 700;
  color: var(--brand);
  line-height: 1.1;
  margin-bottom: 8px;
}

.outcome-stat-label {
  font-size: 14px;
  color: var(--text-secondary);
}

/* Related Cases */
.related-cases {
  padding: 60px 0;
  background: #fff;
}

/* Table */
.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

th, td {
  padding: 16px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

th {
  background: var(--brand);
  color: #fff;
  font-weight: 600;
}

tr:nth-child(even) {
  background: var(--bg-secondary);
}

/* Responsive */
@media (max-width: 768px) {
  .hero-inner,
  .case-header-inner {
    flex-direction: column;
  }

  .hero-image,
  .case-header-image {
    flex: 1 1 auto;
    width: 100%;
  }

  .hero-title,
  .case-title {
    font-size: 32px;
  }

  .hero-full {
    padding: 80px 0;
  }

  .hero-full .hero-subtitle {
    white-space: normal;
  }

  .nav {
    display: none;
  }

  .stats {
    gap: 24px;
    flex-wrap: wrap;
  }

  .footer-main {
    gap: 28px;
  }

  .footer-col {
    flex: 1 1 calc(50% - 28px);
    min-width: calc(50% - 28px);
  }

  .footer-contact {
    gap: 16px;
  }

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

  .footer-bottom a {
    margin-left: 0;
    margin-right: 16px;
  }

  .tabs {
    gap: 8px;
  }

  .tab {
    padding: 8px 14px;
    font-size: 13px;
  }

  .hero-values {
    gap: 16px;
  }

  .topic-intro {
    padding: 60px 0;
  }

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

  .case-hero {
    padding: 80px 0;
  }

  .case-hero-title {
    font-size: 32px;
  }

  .case-hero-subtitle {
    font-size: 16px;
  }

  .case-hero-stats {
    flex-direction: column;
    gap: 20px;
  }

  .case-hero-stat-num {
    font-size: 26px;
  }

  .toc {
    position: sticky;
    top: 0;
    z-index: 10;
  }

  .toc .container {
    flex-wrap: nowrap;
    overflow-x: auto;
  }

  .toc a {
    flex-shrink: 0;
    padding: 8px 14px;
    font-size: 13px;
  }

  .article-section h2 {
    font-size: 24px;
  }

  .section-figure img {
    max-height: 240px;
  }

  .measure {
    padding: 20px;
  }

  .measure-head h3 {
    font-size: 17px;
  }

  .challenge-grid,
  .principle-grid,
  .insight-grid,
  .outcome-stats,
  .challenge-grid.grid-2col,
  .principle-grid.grid-2col,
  .insight-grid.grid-2col,
  .outcome-stats.grid-2col,
  .grid-3col {
    grid-template-columns: 1fr;
  }

  .key-takeaways {
    padding: 18px 20px;
  }

  .key-takeaways li {
    font-size: 14px;
  }
}


/* ---------- 联系我们弹窗 ---------- */
.booking-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(15, 32, 39, .72);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity .25s, visibility .25s;
}
.booking-modal.active {
  opacity: 1;
  visibility: visible;
}
.booking-modal__box {
  position: relative;
  width: 100%;
  max-width: 440px;
  background: #fff;
  border-radius: 16px;
  padding: 36px 32px 32px;
  text-align: center;
  box-shadow: 0 24px 80px rgba(0,0,0,.28);
  transform: translateY(16px);
  transition: transform .25s;
}
.booking-modal.active .booking-modal__box {
  transform: translateY(0);
}
.booking-modal__close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #9CA3AF;
  font-size: 22px;
  line-height: 1;
  transition: all .2s;
  background: transparent;
  border: 0;
  cursor: pointer;
}
.booking-modal__close:hover {
  background: #F3F4F6;
  color: #1A2B3C;
}
.booking-modal__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(44,198,208,.12) 0%, rgba(30,142,150,.12) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}
.booking-modal__icon svg {
  width: 30px;
  height: 30px;
  color: #2CC6D0;
}
.booking-modal__title {
  font-size: 20px;
  font-weight: 700;
  color: #1A2B3C;
  margin-bottom: 20px;
}
.booking-modal__body {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 22px;
}
.booking-modal__line {
  font-size: 15px;
  color: #3F4161;
  line-height: 1.6;
}
.booking-modal__line strong {
  color: #1E8E96;
  font-weight: 700;
}
.booking-modal__qrcode {
  width: 160px;
  height: 160px;
  margin: 0 auto;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid #E5E7EB;
  box-shadow: 0 4px 16px rgba(0,0,0,.06);
}
.booking-modal__qrcode img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.booking-modal__hint {
  margin-top: 10px;
  font-size: 13px;
  color: #6B7280;
}