/* =============================================
   BTRAC智库 · 全局样式表 V3.0
   设计规范：白底学术风 · 对标McKinsey/RAND/CSIS顶级智库
   ============================================= */

/* ---- Google Fonts ---- */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;500;600;700&family=Noto+Serif+SC:wght@400;500;600;700&family=Noto+Sans+SC:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

/* ---- CSS Custom Properties ---- */
:root {
  /* 背景 — 白色体系 */
  --bg-primary:    #FFFFFF;
  --bg-secondary:  #F8F9FA;
  --bg-card:       #FFFFFF;
  --bg-card-hover: #F5F6F8;
  --bg-glass:      rgba(255, 255, 255, 0.95);
  
  /* 主色 — 深蓝学术色 */
  --brand-navy:       #003366;
  --brand-navy-light: #1A5276;
  --brand-navy-dark:  #001F3F;
  
  /* 强调色 — 克制使用 */
  --accent-blue:      #0066CC;
  --accent-blue-dim:  #004C99;
  --accent-blue-light:#3399FF;
  
  /* 品牌金色 — 极少点缀 */
  --gold:      #C9A84C;
  --gold-light:#D4B96A;
  --gold-dim:  #8B7635;
  
  /* 文字色 */
  --text-primary:   #1A1A2E;
  --text-secondary: #4A4A5A;
  --text-muted:     #6B7280;
  
  /* 边框 */
  --border-subtle: #E5E7EB;
  --border-light:  #D1D5DB;
  --border-navy:   rgba(0, 51, 102, 0.2);
  
  /* 阴影 */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:  0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg:  0 8px 30px rgba(0,0,0,0.1);
  
  /* 间距 */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  
  /* 字体 */
  --font-cn: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-serif-cn: 'Noto Serif SC', 'Songti SC', serif;
  --font-en: 'Inter', -apple-system, sans-serif;
  --font-title-en: 'Playfair Display', 'Inter', serif;
  
  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-pill: 100px;
  
  /* 过渡 */
  --transition: all 0.3s ease;
  --transition-slow: all 0.5s ease;
  
  /* 导航高度 */
  --nav-height: 70px;
  
  /* 内容区最大宽度 */
  --max-width: 1280px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-cn);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.8;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

button {
  cursor: pointer;
  font-family: var(--font-cn);
  border: none;
  outline: none;
}

ul, ol {
  list-style: none;
}

/* ---- 滚动条样式 ---- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--brand-navy);
  border-radius: 4px;
  opacity: 0.5;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--brand-navy-light);
}

/* ---- 通用容器 ---- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-md);
  }
}

/* ---- 页面包装 ---- */
.page-wrapper {
  min-height: 100vh;
  position: relative;
}

/* ---- 背景层 — 纯白 ---- */
.bg-gradient {
  display: none;
}

/* =============================================
   导航栏
   ============================================= */
.navbar {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  background-color: var(--bg-primary);
  transition: box-shadow 0.3s ease;
}

.navbar.scrolled {
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.navbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  flex-shrink: 0;
  transition: var(--transition);
}

.logo:hover {
  transform: scale(1.02);
}

.logo-img {
  height: 36px;
  width: auto;
  object-fit: contain;
  transition: var(--transition);
}

.logo:hover .logo-img {
  opacity: 0.85;
}

/* Footer logo slightly larger */
.footer-brand .logo-img {
  height: 44px;
}

/* 导航链接 */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
}

.nav-links a {
  color: var(--brand-navy);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.5px;
  transition: var(--transition);
  position: relative;
  padding: 6px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--brand-navy);
  transition: width 0.3s ease;
  border-radius: 1px;
}

.nav-links a:hover {
  color: var(--brand-navy);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

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

/* 导航栏右侧 */
.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-search-btn {
  width: 40px; height: 40px;
  background: transparent;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-navy);
  font-size: 16px;
  cursor: pointer;
  transition: var(--transition);
}

.nav-search-btn:hover {
  border-color: var(--brand-navy);
  background: var(--bg-secondary);
}

/* 语言切换 */
.lang-switch {
  display: flex;
  align-items: center;
  border: 1px solid var(--brand-navy);
  border-radius: var(--radius-pill);
  overflow: hidden;
}

.lang-btn {
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: var(--transition);
  background: transparent;
  border: none;
  color: var(--brand-navy);
  font-family: var(--font-en);
}

.lang-btn:first-child {
  border-right: 1px solid var(--brand-navy);
}

.lang-btn.active {
  background: var(--brand-navy);
  color: #FFFFFF;
}

.lang-btn:hover:not(.active) {
  background: var(--bg-secondary);
}

/* 汉堡菜单按钮 */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.mobile-menu-btn:hover {
  background: var(--bg-secondary);
}

.mobile-menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--brand-navy);
  transition: var(--transition);
  border-radius: 1px;
}

/* 移动端全屏菜单 */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: var(--bg-primary);
  z-index: 999;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--space-xl);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.mobile-menu.active {
  opacity: 1;
  pointer-events: all;
}

.mobile-menu a {
  color: var(--brand-navy);
  text-decoration: none;
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 2px;
  transition: var(--transition);
}

.mobile-menu a:hover {
  color: var(--accent-blue);
}

.mobile-menu-close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-xl);
  font-size: 28px;
  color: var(--brand-navy);
  background: none;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.mobile-menu-close:hover {
  background: var(--bg-secondary);
  color: var(--brand-navy);
}

/* 搜索框展开 */
.search-overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(255, 255, 255, 0.98);
  z-index: 2000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 140px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.search-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.search-overlay-inner {
  width: 100%;
  max-width: 700px;
  padding: 0 var(--space-xl);
}

.search-overlay-input-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  border-bottom: 2px solid var(--brand-navy);
  padding-bottom: var(--space-md);
}

.search-overlay-input-wrap input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-size: 24px;
  color: var(--text-primary);
  font-family: var(--font-cn);
  letter-spacing: 1px;
}

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

.search-close-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 24px;
  cursor: pointer;
  transition: var(--transition);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.search-close-btn:hover {
  color: var(--brand-navy);
  background: var(--bg-secondary);
}

/* =============================================
   页面主体
   ============================================= */
.page-content {
  position: relative;
  z-index: 1;
  padding-top: var(--nav-height);
}

/* =============================================
   通用章节样式
   ============================================= */
.section {
  padding: var(--space-3xl) 0;
  position: relative;
}

.section-alt {
  background: var(--bg-secondary);
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 6px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  font-size: 11px;
  color: var(--brand-navy);
  font-family: var(--font-en);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--font-serif-cn);
  line-height: 1.2;
  margin-bottom: var(--space-lg);
}

.section-subtitle {
  font-size: 15px;
  color: var(--text-secondary);
  font-family: var(--font-en);
  letter-spacing: 0.5px;
  margin-bottom: var(--space-xl);
}

/* Section分割线 */
.section-divider {
  width: 60px;
  height: 2px;
  background: var(--brand-navy);
  margin-bottom: var(--space-2xl);
}

.section-header-center {
  text-align: center;
}

.section-header-center .section-divider {
  margin-left: auto;
  margin-right: auto;
}

.section-header {
  margin-bottom: var(--space-2xl);
}

.section-header-center {
  text-align: center;
}

/* 章节链接箭头 */
.section-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--brand-navy);
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
}

.section-more:hover {
  color: var(--accent-blue);
  border-color: var(--accent-blue);
  background: var(--bg-secondary);
}

/* =============================================
   按钮样式
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  font-family: var(--font-cn);
  letter-spacing: 0.5px;
}

/* 主CTA按钮 — Hero蓝底上用白底深蓝字 */
.btn-primary {
  background: #FFFFFF;
  color: var(--brand-navy);
}

.btn-primary:hover {
  background: rgba(255,255,255,0.9);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: var(--brand-navy);
}

/* 次级按钮 — Hero蓝底上用白边白字 */
.btn-outline {
  background: transparent;
  color: #FFFFFF;
  border: 1px solid rgba(255,255,255,0.5);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  color: #FFFFFF;
  border-color: rgba(255,255,255,0.8);
}

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

.btn-gold:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: #FFFFFF;
}

/* =============================================
   Hero 通用样式
   ============================================= */
.page-hero {
  min-height: 480px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: calc(var(--nav-height) + var(--space-3xl)) var(--space-xl) var(--space-3xl);
  position: relative;
  background: linear-gradient(135deg, #001F3F 0%, #003366 40%, #1A5276 100%);
  overflow: hidden;
}

.page-hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 2px;
  background: var(--gold);
  pointer-events: none;
}

.hero-grid-bg {
  display: none;
}

.page-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 24px;
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: var(--radius-pill);
  font-size: 12px;
  color: rgba(255,255,255,0.85);
  font-family: var(--font-en);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: var(--space-xl);
  position: relative;
  z-index: 1;
}

.page-hero-title {
  font-size: clamp(24px, 3.5vw, 48px);
  font-weight: 700;
  color: #FFFFFF;
  font-family: var(--font-serif-cn);
  line-height: 1.2;
  margin-bottom: var(--space-lg);
  position: relative;
  z-index: 1;
  letter-spacing: 3px;
  white-space: nowrap;
}

.page-hero-subtitle {
  font-size: 16px;
  color: rgba(255,255,255,0.7);
  max-width: 600px;
  line-height: 1.8;
  position: relative;
  z-index: 1;
}

.page-hero-divider {
  width: 60px;
  height: 2px;
  background: var(--gold);
  margin: var(--space-xl) auto 0;
  position: relative;
  z-index: 1;
  opacity: 0.7;
}

/* 赛道标签胶囊 */
.hero-tags {
  display: flex;
  flex-wrap: nowrap;
  justify-content: center;
  gap: 8px;
  max-width: 1000px;
  margin: 0 auto;
}

.hero-tag {
  padding: 6px 14px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: var(--radius-pill);
  font-size: 12px;
  white-space: nowrap;
  color: rgba(255,255,255,0.9);
  transition: var(--transition);
}

.hero-tag:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.5);
  color: #FFFFFF;
}

.hero-tag.gold {
  background: rgba(201, 168, 76, 0.1);
  border-color: var(--gold);
  color: var(--gold-dim);
}

.hero-tag.gold:hover {
  background: var(--gold);
  color: #FFFFFF;
}

/* =============================================
   卡片样式
   ============================================= */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

/* =============================================
   报告卡片
   ============================================= */
.report-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
}

.report-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.report-card-cover {
  aspect-ratio: 16/9;
  background: var(--brand-navy);
  position: relative;
  overflow: hidden;
}

.report-card-cover::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60%;
  background: linear-gradient(to top, rgba(0, 51, 102, 0.9) 0%, transparent 100%);
  pointer-events: none;
}

.report-card-cover-gold {
  position: absolute;
  top: 0; right: 0;
  width: 80px; height: 80px;
  background: linear-gradient(135deg, var(--gold), transparent 60%);
  opacity: 0.3;
}

.report-card-cover-content {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  text-align: center;
}

.report-card-cover-hex {
  width: 48px; height: 48px;
  background: none;
  clip-path: none;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  transition: var(--transition);
  overflow: hidden;
}

.report-card-cover-hex img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: brightness(0) invert(1);
  opacity: 0.9;
}

.report-card:hover .report-card-cover-hex {
  transform: scale(1.1);
}

.report-card-cover-title {
  font-size: 14px;
  font-weight: 600;
  color: #FFFFFF;
  line-height: 1.4;
}

.report-card-body {
  padding: var(--space-xl);
}

.report-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: var(--space-md);
}

.report-card-tag {
  padding: 4px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  font-size: 11px;
  color: var(--brand-navy);
  transition: var(--transition);
}

.report-card:hover .report-card-tag {
  background: var(--brand-navy);
  border-color: var(--brand-navy);
  color: #FFFFFF;
}

.report-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.report-card-meta {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-en);
  margin-bottom: var(--space-md);
}

.report-card-finding {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.report-card-finding strong {
  color: var(--brand-navy);
  font-weight: 600;
}

.report-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--brand-navy);
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
}

.report-card-cta:hover {
  color: var(--accent-blue);
  gap: 10px;
}

/* =============================================
   赛道领域卡片
   ============================================= */
.domain-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.domain-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  text-align: center;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.domain-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-navy);
}

.domain-icon {
  width: 64px; height: 64px;
  margin: 0 auto var(--space-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  transition: var(--transition);
}

.domain-card:hover .domain-icon {
  background: var(--brand-navy);
  border-color: var(--brand-navy);
  transform: scale(1.1);
}

.domain-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.domain-name-en {
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-en);
  letter-spacing: 0.5px;
  margin-bottom: var(--space-md);
}

.domain-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.domain-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--brand-navy);
  margin-top: var(--space-lg);
  opacity: 0;
  transform: translateY(10px);
  transition: var(--transition);
}

.domain-card:hover .domain-arrow {
  opacity: 1;
  transform: translateY(0);
}

/* =============================================
   统计数字
   ============================================= */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.stat-box {
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.stat-box:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.stat-number {
  font-size: clamp(36px, 5vw, 52px);
  font-weight: 700;
  font-family: var(--font-title-en);
  color: var(--brand-navy);
  line-height: 1;
  margin-bottom: 10px;
}

.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  letter-spacing: 1px;
}

/* =============================================
   报告网格
   ============================================= */
.report-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

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

@media (max-width: 640px) {
  .report-grid {
    grid-template-columns: 1fr;
  }
}

/* =============================================
   专家团队卡片
   ============================================= */
.expert-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.expert-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.expert-avatar {
  width: 80px; height: 80px;
  margin: 0 auto var(--space-lg);
  background: var(--bg-secondary);
  border: 2px solid var(--brand-navy);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: var(--brand-navy);
  transition: var(--transition);
}

.expert-card:hover .expert-avatar {
  transform: scale(1.1);
  background: var(--brand-navy);
  color: #FFFFFF;
}

.expert-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.expert-title {
  font-size: 12px;
  color: var(--text-secondary);
  font-family: var(--font-en);
  margin-bottom: 6px;
}

.expert-domain {
  font-size: 12px;
  color: var(--brand-navy);
}

/* =============================================
   洞察列表
   ============================================= */
.insight-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.insight-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  cursor: pointer;
}

.insight-item:hover {
  border-color: var(--brand-navy);
  transform: translateX(8px);
  box-shadow: var(--shadow-md);
}

.insight-dot {
  width: 8px; height: 8px;
  background: var(--brand-navy);
  border-radius: 50%;
  margin-top: 6px;
  flex-shrink: 0;
}

.insight-date {
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-en);
  flex-shrink: 0;
  padding: 2px 8px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
}

.insight-title {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  transition: var(--transition);
}

.insight-item:hover .insight-title {
  color: var(--text-primary);
}

/* =============================================
   发布体系卡片
   ============================================= */
.system-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.system-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.system-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-navy);
}

.system-icon {
  width: 60px; height: 60px;
  margin: 0 auto var(--space-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  transition: var(--transition);
}

.system-card:hover .system-icon {
  transform: scale(1.1);
  background: var(--brand-navy);
  border-color: var(--brand-navy);
}

.system-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.system-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* =============================================
   订阅区
   ============================================= */
.subscribe-section {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-2xl);
  padding: var(--space-3xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.subscribe-section h3 {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--font-serif-cn);
  margin-bottom: var(--space-md);
}

.subscribe-section p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.subscribe-form-lg {
  display: flex;
  gap: var(--space-md);
  max-width: 500px;
  margin: 0 auto var(--space-xl);
}

.subscribe-form-lg input {
  flex: 1;
  padding: 16px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-pill);
  color: var(--text-primary);
  font-size: 14px;
  font-family: var(--font-cn);
  outline: none;
  transition: var(--transition);
}

.subscribe-form-lg input:focus {
  border-color: var(--brand-navy);
}

.subscribe-form-lg input::placeholder {
  color: var(--text-muted);
}

.subscribe-form-lg button {
  padding: 16px 32px;
  background: var(--brand-navy);
  color: #FFFFFF;
  border: none;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  font-family: var(--font-cn);
  letter-spacing: 0.5px;
}

.subscribe-form-lg button:hover {
  background: var(--brand-navy-light);
  transform: scale(1.02);
}

.subscribe-social {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.subscribe-social a {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  transition: var(--transition);
  padding: 8px 16px;
  border-radius: var(--radius-md);
}

.subscribe-social a:hover {
  color: var(--brand-navy);
  background: var(--bg-secondary);
}

/* =============================================
   合作伙伴
   ============================================= */
.partner-scroll {
  display: flex;
  gap: var(--space-md);
  overflow-x: auto;
  padding-bottom: var(--space-md);
  scrollbar-width: none;
}

.partner-scroll::-webkit-scrollbar {
  display: none;
}

.partner-item {
  flex-shrink: 0;
  padding: var(--space-md) var(--space-xl);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  font-size: 13px;
  color: var(--text-muted);
  font-family: var(--font-en);
  transition: var(--transition);
  white-space: nowrap;
  cursor: default;
}

.partner-item:hover {
  border-color: var(--brand-navy);
  color: var(--brand-navy);
}

/* =============================================
   报告详情页
   ============================================= */
.report-detail-header {
  padding: var(--space-3xl) 0;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
}

.report-detail-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-3xl);
  align-items: start;
  position: relative;
  z-index: 1;
}

.report-cover-large {
  aspect-ratio: 3/4;
  background: var(--brand-navy);
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
}

.report-cover-large:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

.report-cover-hex {
  width: 60px; height: 60px;
  background: var(--gold);
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: #FFFFFF;
  font-family: var(--font-title-en);
  margin: 0 auto var(--space-lg);
}

.report-cover-title {
  font-size: 22px;
  font-weight: 700;
  color: #FFFFFF;
  line-height: 1.4;
  margin-bottom: var(--space-lg);
}

.report-cover-divider {
  width: 60px;
  height: 2px;
  background: var(--gold);
  margin: 0 auto var(--space-md);
}

.report-cover-subtitle {
  font-size: 12px;
  color: rgba(255,255,255,0.8);
  font-family: var(--font-en);
  letter-spacing: 1px;
}

.report-meta-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: var(--space-lg);
}

.report-meta-tag {
  padding: 6px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  font-size: 12px;
  color: var(--brand-navy);
}

.report-detail-info h2 {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--font-serif-cn);
  margin-bottom: var(--space-md);
  line-height: 1.2;
}

.report-detail-info .subtitle-en {
  font-size: 14px;
  color: var(--brand-navy);
  font-family: var(--font-en);
  margin-bottom: var(--space-md);
}

.report-version {
  font-size: 13px;
  color: var(--text-muted);
  font-family: var(--font-en);
  margin-bottom: var(--space-xl);
}

.report-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
  padding: var(--space-xl);
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
}

.report-meta-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.report-meta-item .label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-family: var(--font-en);
}

.report-meta-item .value {
  font-size: 14px;
  color: var(--text-primary);
  font-weight: 500;
}

/* 核心发现列表 */
.report-finding-list {
  list-style: none;
  margin-bottom: var(--space-xl);
}

.report-finding-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  position: relative;
  padding-left: var(--space-xl);
}

.report-finding-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 20px;
  width: 8px;
  height: 8px;
  background: var(--brand-navy);
  border-radius: 50%;
}

.report-finding-list li .bullet {
  color: var(--brand-navy);
  font-size: 10px;
  margin-top: 4px;
  flex-shrink: 0;
}

.report-download-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 18px 40px;
  background: var(--gold);
  color: #FFFFFF;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: var(--transition);
  letter-spacing: 0.5px;
}

.report-download-btn:hover {
  background: var(--gold-light);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  color: #FFFFFF;
}

/* 报告目录 */
.toc-section {
  padding: var(--space-3xl) 0;
}

.toc-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md) var(--space-xl);
}

.toc-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  font-size: 14px;
  color: var(--text-secondary);
  position: relative;
  padding-left: calc(var(--space-lg) + 30px);
}

.toc-item:hover {
  border-color: var(--brand-navy);
  color: var(--text-primary);
  transform: translateX(8px);
  background: var(--bg-card);
}

.toc-num {
  position: absolute;
  left: 8px;
  font-family: var(--font-title-en);
  font-size: 12px;
  color: var(--brand-navy);
  font-weight: 600;
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

/* 摘要 */
.abstract-section {
  padding: var(--space-3xl) 0;
  background: var(--bg-secondary);
}

.abstract-box {
  max-width: 900px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  position: relative;
  overflow: hidden;
}

.abstract-box h3 {
  font-size: 18px;
  color: var(--brand-navy);
  margin-bottom: var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  position: relative;
}

.abstract-box h3::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 24px;
  background: var(--brand-navy);
  border-radius: 2px;
}

.abstract-box p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 2;
  margin-bottom: var(--space-lg);
  position: relative;
}

.abstract-box p:last-child {
  margin-bottom: 0;
}

/* =============================================
   关于页
   ============================================= */
.founder-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.founder-photo-wrap {
  position: relative;
}

.founder-photo {
  width: 280px;
  height: 340px;
  background: var(--bg-secondary);
  border: 3px solid var(--brand-navy);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 100px;
  color: var(--brand-navy);
  opacity: 0.5;
  position: relative;
  z-index: 2;
  transition: var(--transition);
}

.founder-photo-wrap:hover .founder-photo {
  transform: scale(1.02);
  background: var(--brand-navy);
  color: #FFFFFF;
}

.founder-photo-glow {
  display: none;
}

.founder-info h2 {
  font-size: 28px;
  color: var(--brand-navy);
  font-weight: 700;
  font-family: var(--font-serif-cn);
  margin-bottom: 10px;
}

.founder-info .founder-title {
  font-size: 14px;
  color: var(--text-secondary);
  font-family: var(--font-en);
  margin-bottom: var(--space-xl);
  line-height: 1.6;
}

.founder-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: var(--space-xl);
}

.founder-tag {
  padding: 6px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  font-size: 12px;
  color: var(--brand-navy);
  transition: var(--transition);
}

.founder-tag:hover {
  background: var(--brand-navy);
  border-color: var(--brand-navy);
  color: #FFFFFF;
}

.founder-bio p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 2;
  margin-bottom: var(--space-lg);
}

.founder-bio p:last-child {
  margin-bottom: 0;
}

/* 使命愿景 */
.mv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.mv-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.mv-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.mv-card h3 {
  font-size: 22px;
  color: var(--brand-navy);
  font-family: var(--font-serif-cn);
  margin-bottom: var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  position: relative;
}

.mv-card h3::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 28px;
  background: var(--brand-navy);
  border-radius: 2px;
}

.mv-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.mv-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  padding: var(--space-md);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border-left: 2px solid var(--border-subtle);
  transition: var(--transition);
}

.mv-list li:hover {
  background: var(--bg-card);
  border-left-color: var(--brand-navy);
  transform: translateX(8px);
}

.mv-list li::before {
  content: '◆';
  color: var(--brand-navy);
  font-size: 8px;
  margin-top: 6px;
  flex-shrink: 0;
}

/* =============================================
   筛选栏
   ============================================= */
.filter-bar {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.filter-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.filter-row:last-child {
  margin-bottom: 0;
}

.filter-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
  flex-shrink: 0;
}

.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.filter-chip {
  padding: 8px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  font-size: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-cn);
}

.filter-chip:hover,
.filter-chip.active {
  border-color: var(--brand-navy);
  color: var(--brand-navy);
  background: var(--bg-card);
}

.filter-search {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex: 1;
  min-width: 280px;
}

.filter-search input {
  flex: 1;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: 13px;
  font-family: var(--font-cn);
  outline: none;
  transition: var(--transition);
}

.filter-search input:focus {
  border-color: var(--brand-navy);
}

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

/* =============================================
   面包屑
   ============================================= */
.breadcrumb {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-lg) var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 13px;
}

.breadcrumb a {
  color: var(--text-muted);
  transition: var(--transition);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

.breadcrumb a:hover {
  color: var(--brand-navy);
  background: var(--bg-secondary);
}

.breadcrumb span {
  color: var(--text-muted);
  opacity: 0.5;
}

.breadcrumb .current {
  color: var(--text-secondary);
}

/* =============================================
   渐显动画
   ============================================= */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }
.reveal-delay-6 { transition-delay: 0.6s; }

/* =============================================
   页脚
   ============================================= */
.site-footer {
  background: var(--brand-navy);
  padding: var(--space-3xl) 0 var(--space-xl);
  position: relative;
  z-index: 1;
}

.footer-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand .logo {
  margin-bottom: var(--space-lg);
}

.footer-brand-desc {
  font-size: 13px;
  color: rgba(255,255,255,0.7);
  line-height: 1.8;
  margin-bottom: var(--space-sm);
}

.footer-brand-en {
  font-size: 11px;
  color: rgba(255,255,255,0.5);
  font-family: var(--font-en);
  letter-spacing: 0.5px;
}

.footer-col-title {
  font-size: 13px;
  font-weight: 600;
  color: #FFFFFF;
  margin-bottom: var(--space-xl);
  letter-spacing: 1px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-col ul li a {
  font-size: 13px;
  color: rgba(255,255,255,0.7);
  transition: var(--transition);
  display: inline-block;
  padding: 4px 0;
}

.footer-col ul li a:hover {
  color: #FFFFFF;
  transform: translateX(4px);
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  font-size: 13px;
  color: rgba(255,255,255,0.7);
}

.footer-contact-item .icon {
  color: var(--gold);
  font-size: 14px;
}

/* 订阅区域 */
.subscribe-form {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.subscribe-form input {
  flex: 1;
  padding: 12px 16px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-lg);
  color: #FFFFFF;
  font-size: 13px;
  font-family: var(--font-cn);
  outline: none;
  transition: var(--transition);
}

.subscribe-form input:focus {
  border-color: rgba(255,255,255,0.4);
}

.subscribe-form button {
  padding: 12px 20px;
  background: var(--gold);
  color: #FFFFFF;
  border: none;
  border-radius: var(--radius-lg);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.subscribe-form button:hover {
  background: var(--gold-light);
  transform: scale(1.02);
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-xl) 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-bottom p {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  font-family: var(--font-en);
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-lg);
}

.footer-bottom-links a {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  font-family: var(--font-en);
  transition: var(--transition);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

.footer-bottom-links a:hover {
  color: #FFFFFF;
  background: rgba(255,255,255,0.1);
}

/* =============================================
   报告类型标签
   ============================================= */
.report-type-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 11px;
  font-weight: 500;
}

.report-type-tag.flagship {
  background: rgba(201, 168, 76, 0.15);
  color: var(--gold-dim);
  border: 1px solid rgba(201, 168, 76, 0.3);
}

.report-type-tag.planning {
  background: var(--bg-secondary);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
}

.report-status-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 11px;
  font-weight: 500;
  background: var(--bg-secondary);
  color: var(--brand-navy);
  border: 1px solid var(--border-subtle);
}

.report-status-badge.upcoming {
  background: rgba(201, 168, 76, 0.1);
  color: var(--gold-dim);
  border-color: rgba(201, 168, 76, 0.2);
}

.report-version-badge {
  display: inline-block;
  padding: 4px 8px;
  background: var(--brand-navy);
  color: #FFFFFF;
  border-radius: var(--radius-sm);
  font-size: 10px;
  font-weight: 600;
  font-family: var(--font-en);
}

.report-card-meta-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

/* =============================================
   响应式
   ============================================= */
@media (max-width: 1024px) {
  .domain-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .system-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .founder-grid {
    grid-template-columns: 1fr;
  }
  
  .founder-photo {
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .mobile-menu-btn {
    display: flex;
  }
  
  .mobile-menu {
    display: flex;
  }
  
  .domain-grid {
    grid-template-columns: 1fr;
  }
  
  .system-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-row {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .mv-grid {
    grid-template-columns: 1fr;
  }
  
  .page-hero {
    min-height: 300px;
  }
  
  .hero-tags {
    flex-wrap: wrap;
  }
  
  .subscribe-form-lg {
    flex-direction: column;
  }
  
  .subscribe-form-lg button {
    width: 100%;
  }
}