/* ============================================
   沈家本研究院官网 — 全站CSS变量体系
   严格遵循 UI 规范 v1.0
   ============================================ */

:root {
  /* === 主色系 === */
  --color-primary:       #203B64;   /* 法治深蓝 — 导航、主按钮、标题强调、图表主色、页脚底色 */
  --color-primary-light: #6B84A8;   /* 辅助浅蓝 — 次级按钮、边框、次要标签 */
  --color-accent:        #C89959;   /* 文史点缀古铜色 — 仅Banner、小标题点缀、荣誉标签 */

  /* === 文本色系 === */
  --text-primary:   #222222;        /* 正文 */
  --text-secondary: #666666;        /* 次级文本 */
  --text-tertiary:  #999999;        /* 辅助文本 */
  --text-on-dark:   #FFFFFF;        /* 深色背景上的文字 */
  --text-on-dark-secondary: rgba(255,255,255,0.7);

  /* === 背景色系 === */
  --bg-page:     #F8F9FA;           /* 页面底色 */
  --bg-card:     #FFFFFF;           /* 卡片纯白 */
  --bg-section:  #EDF0F4;           /* 板块交替底色 */
  --bg-footer:   #1A2D4A;           /* 页脚深色 */

  /* === 边框/分割 === */
  --border-color: #E5E7EB;          /* 分割线 */
  --border-light: #F0F0F0;

  /* === 状态色（数据专用） === */
  --color-success:  #279E68;        /* 新增/正常 绿色 */
  --color-warning:  #E69523;        /* 进行中立法 橙色 */
  --color-danger:   #D83030;        /* 处罚/警示 红色 */
  --color-muted:    #AAAAAA;        /* 过期/失效 灰色 */

  /* === 字体族 === */
  --font-heading: 'Noto Serif SC', 'Source Han Serif SC', 'SimSun', 'STSong', serif;  /* 标题：思源宋体 */
  --font-body:    'Noto Sans SC', 'Source Han Sans SC', 'Microsoft YaHei', 'PingFang SC', sans-serif; /* 正文：思源黑体 */
  --font-mono:    'SF Mono', 'Fira Code', 'Consolas', monospace;

  /* === 字号层级 === */
  --fs-hero:     32px;              /* 大标题 */
  --fs-h1:       28px;              /* 页面大标题 */
  --fs-h2:       24px;              /* 板块标题 */
  --fs-h3:       20px;              /* 次级板块标题 */
  --fs-card-title: 18px;            /* 卡片标题 */
  --fs-card-sub:   16px;
  --fs-lg:        20px;              /* 大号文本 */
  --fs-body:     15px;              /* 正文 */
  --fs-body-sm:  14px;              /* 小正文 */
  --fs-note:     13px;              /* 备注小字 */
  --fs-note-sm:  12px;              /* 最小备注 */

  /* === 间距体系 === */
  --spacing-xs:  4px;
  --spacing-sm:  8px;
  --spacing-md:  16px;
  --spacing-lg:  24px;
  --spacing-xl:  32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;

  /* === 布局 === */
  --max-width:   1200px;            /* PC 版心最大宽度 */
  --nav-height:  72px;              /* 导航栏高度 */
  --card-padding: 20px;             /* 卡片统一内边距 */
  --card-radius: 6px;               /* 卡片圆角 */

  /* === 阴影 === */
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.06);
  --shadow-md:   0 2px 8px rgba(0,0,0,0.08);
  --shadow-lg:   0 4px 16px rgba(0,0,0,0.10);

  /* === 过渡 === */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.35s ease;
}

/* ============================================
   全局重置 & 基础样式
   ============================================ */

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  color: var(--text-primary);
  background-color: var(--bg-page);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--color-primary-light);
}

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

ul, ol {
  list-style: none;
}

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

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ============================================
   布局容器
   ============================================ */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-3xl) 0;
}

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

.section-title {
  font-family: var(--font-heading);
  font-size: var(--fs-h2);
  color: var(--color-primary);
  text-align: center;
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
}

.section-subtitle {
  font-size: var(--fs-body-sm);
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.section-divider {
  width: 60px;
  height: 3px;
  background: var(--color-accent);
  margin: var(--spacing-md) auto var(--spacing-lg);
  border-radius: 2px;
}

/* ============================================
   卡片基础组件
   ============================================ */

.card {
  background: var(--bg-card);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

/* ============================================
   按钮组件
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 10px 24px;
  font-family: var(--font-body);
  font-size: var(--fs-body-sm);
  font-weight: 500;
  border-radius: 4px;
  transition: all var(--transition-fast);
  white-space: nowrap;
  line-height: 1.4;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--text-on-dark);
}
.btn-primary:hover {
  background: #1a3050;
  color: var(--text-on-dark);
}

.btn-secondary {
  background: var(--color-primary-light);
  color: var(--text-on-dark);
}
.btn-secondary:hover {
  background: #5a7294;
  color: var(--text-on-dark);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: var(--text-on-dark);
}

.btn-accent {
  background: var(--color-accent);
  color: #fff;
}
.btn-accent:hover {
  background: #b38a4c;
  color: #fff;
}

.btn-sm {
  padding: 6px 16px;
  font-size: var(--fs-note-sm);
}
.btn-lg {
  padding: 14px 32px;
  font-size: var(--fs-body);
}

/* ============================================
   表单组件
   ============================================ */

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-size: var(--fs-body-sm);
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--border-color);
  border-radius: 4px;
  font-size: var(--fs-body-sm);
  color: var(--text-primary);
  background: var(--bg-card);
  transition: border-color var(--transition-fast);
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(32,59,100,0.1);
}
.form-input::placeholder {
  color: var(--text-tertiary);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* ============================================
   表格基础
   ============================================ */

.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-body-sm);
}

thead th {
  background: var(--color-primary);
  color: var(--text-on-dark);
  padding: 12px 16px;
  text-align: left;
  font-weight: 500;
  white-space: nowrap;
}
thead th:first-child { border-radius: var(--card-radius) 0 0 0; }
thead th:last-child  { border-radius: 0 var(--card-radius) 0 0; }

tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-primary);
}
tbody tr:hover { background: #f8f9fb; }
tbody tr:last-child td { border-bottom: none; }

/* ============================================
   标签/徽章
   ============================================ */

.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  font-size: var(--fs-note-sm);
  border-radius: 3px;
  font-weight: 500;
  white-space: nowrap;
}

.tag-primary   { background: rgba(32,59,100,0.1);  color: var(--color-primary); }
.tag-accent    { background: rgba(200,153,89,0.15); color: var(--color-accent); }
.tag-success   { background: rgba(39,158,104,0.1);  color: var(--color-success); }
.tag-warning   { background: rgba(230,149,35,0.1);  color: var(--color-warning); }
.tag-danger    { background: rgba(216,48,48,0.1);    color: var(--color-danger); }
.tag-muted     { background: rgba(170,170,170,0.1);  color: var(--color-muted); }

/* ============================================
   状态指示点
   ============================================ */

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 6px;
}
.status-dot.success { background: var(--color-success); }
.status-dot.warning { background: var(--color-warning); }
.status-dot.danger  { background: var(--color-danger); }
.status-dot.muted   { background: var(--color-muted); }

/* ============================================
   加载/空/异常 全局兜底
   ============================================ */

.loading-state,
.empty-state,
.error-state {
  text-align: center;
  padding: var(--spacing-3xl) var(--spacing-lg);
  color: var(--text-secondary);
}

.loading-state .spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--border-color);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto var(--spacing-md);
}

.empty-state .empty-icon,
.error-state .error-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-md);
  opacity: 0.4;
}

.error-state .error-icon { color: var(--color-danger); }

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ============================================
   导航栏
   ============================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  height: var(--nav-height);
  transition: box-shadow var(--transition-normal);
}
.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.nav-logo-icon {
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 700;
}

.nav-logo-text {
  font-family: var(--font-heading);
  font-size: var(--fs-card-title);
  color: var(--color-primary);
  font-weight: 700;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-links a,
.nav-dropdown-trigger {
  font-size: var(--fs-body-sm);
  color: var(--text-primary);
  padding: 8px 12px;
  border-radius: 4px;
  transition: all var(--transition-fast);
  position: relative;
  white-space: nowrap;
}
.nav-links a:hover,
.nav-links a.active,
.nav-dropdown-trigger:hover,
.nav-dropdown-trigger.active {
  color: var(--color-primary);
  background: rgba(32,59,100,0.06);
}

.nav-links a.active::after,
.nav-dropdown-trigger.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 12px;
  right: 12px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

/* 下拉菜单 */
.nav-dropdown-wrap {
  position: relative;
}
.nav-arrow {
  display: inline-block;
  font-size: 12px;
  margin-left: 2px;
  transition: transform var(--transition-fast);
  transform: rotate(90deg);
}
.nav-dropdown-wrap.open .nav-arrow {
  transform: rotate(-90deg);
}
.nav-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  box-shadow: var(--shadow-lg);
  min-width: 200px;
  padding: 6px 0;
  z-index: 1001;
}
.nav-dropdown-wrap.open .nav-dropdown {
  display: block;
}
.nav-dropdown a {
  display: block;
  padding: 10px 18px;
  font-size: var(--fs-body-sm);
  color: var(--text-primary);
  border-radius: 0;
  transition: all var(--transition-fast);
}
.nav-dropdown a:hover,
.nav-dropdown a.active {
  color: var(--color-primary);
  background: rgba(32,59,100,0.06);
}

/* 移动端子菜单 */
.mnav-group {
  border-bottom: 1px solid var(--border-light);
}
.mnav-parent {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  font-size: var(--fs-body);
  color: var(--text-primary);
  cursor: pointer;
  border-radius: 6px;
}
.mnav-parent:hover,
.mnav-parent.active {
  color: var(--color-primary);
  background: rgba(32,59,100,0.05);
}
.mnav-toggle {
  font-size: 20px;
  font-weight: 300;
  color: var(--text-tertiary);
  padding: 4px 8px;
  cursor: pointer;
  flex-shrink: 0;
}
.mnav-parent-link {
  color: inherit;
  text-decoration: none;
  flex: 1;
}
.mnav-children {
  display: none;
  padding-left: 16px;
  padding-bottom: 4px;
}
.mnav-children a {
  padding: 10px 16px;
  font-size: var(--fs-body-sm);
}

/* 汉堡菜单按钮 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  transition: all var(--transition-normal);
  border-radius: 2px;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* 移动端菜单 */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-card);
  padding: var(--spacing-lg);
  z-index: 999;
  flex-direction: column;
  gap: var(--spacing-sm);
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  display: block;
  padding: 14px 16px;
  font-size: var(--fs-body);
  color: var(--text-primary);
  border-radius: 6px;
  border-bottom: 1px solid var(--border-light);
}
.mobile-nav a:hover,
.mobile-nav a.active {
  color: var(--color-primary);
  background: rgba(32,59,100,0.05);
}

/* ============================================
   页脚
   ============================================ */

.site-footer {
  background: var(--bg-footer);
  color: var(--text-on-dark-secondary);
  padding: var(--spacing-2xl) 0 0;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-xl);
}

.footer-brand h3 {
  font-family: var(--font-heading);
  font-size: var(--fs-h3);
  color: var(--text-on-dark);
  margin-bottom: var(--spacing-sm);
}

.footer-brand p {
  font-size: var(--fs-body-sm);
  line-height: 1.7;
}

.footer-col h4 {
  font-size: var(--fs-body-sm);
  color: var(--text-on-dark);
  margin-bottom: var(--spacing-md);
  font-weight: 600;
}

.footer-col a {
  display: block;
  font-size: var(--fs-body-sm);
  color: var(--text-on-dark-secondary);
  padding: 4px 0;
  transition: color var(--transition-fast);
}
.footer-col a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-lg) 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  font-size: var(--fs-note-sm);
  color: var(--text-on-dark-secondary);
}

.footer-bottom p { margin-bottom: 4px; }
.footer-bottom a { color: var(--color-accent); }

/* ============================================
   模块：统计数据卡片（首页五大模块用）
   ============================================ */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.stat-card {
  background: var(--bg-card);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  box-shadow: var(--shadow-sm);
  border-left: 3px solid var(--color-primary);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}
.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.stat-card.accent  { border-left-color: var(--color-accent); }
.stat-card.success { border-left-color: var(--color-success); }
.stat-card.warning { border-left-color: var(--color-warning); }
.stat-card.danger  { border-left-color: var(--color-danger); }

.stat-card-label {
  font-size: var(--fs-note);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.stat-card-value {
  font-family: var(--font-heading);
  font-size: 28px;
  color: var(--color-primary);
  font-weight: 700;
}
.stat-card.accent .stat-card-value  { color: var(--color-accent); }
.stat-card.success .stat-card-value { color: var(--color-success); }
.stat-card.warning .stat-card-value { color: var(--color-warning); }
.stat-card.danger .stat-card-value  { color: var(--color-danger); }

.stat-card-change {
  font-size: var(--fs-note-sm);
  margin-top: var(--spacing-xs);
}
.stat-card-change.up   { color: var(--color-success); }
.stat-card-change.down { color: var(--color-danger); }

.stat-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}
.stat-badge {
  display: inline-block;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 10px;
  background: rgba(32, 59, 100, 0.06);
  color: var(--text-secondary);
  white-space: nowrap;
}
.stat-card-desc {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border-color);
  line-height: 1.5;
}

/* ============================================
   模块：Hero Banner
   ============================================ */

.hero {
  position: relative;
  background: linear-gradient(135deg, #1a2d4a 0%, #203b64 40%, #264773 100%);
  padding: 100px 0 80px;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(200,153,89,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(107,132,168,0.10) 0%, transparent 50%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.hero-badge {
  display: inline-block;
  background: rgba(200,153,89,0.15);
  color: var(--color-accent);
  font-size: var(--fs-note);
  padding: 6px 18px;
  border-radius: 20px;
  border: 1px solid rgba(200,153,89,0.25);
  margin-bottom: var(--spacing-lg);
  font-weight: 500;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(28px, 4vw, var(--fs-hero));
  color: var(--text-on-dark);
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: var(--spacing-md);
}

.hero-subtitle {
  font-size: var(--fs-body);
  color: var(--text-on-dark-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ============================================
   模块：时间轴
   ============================================ */

/* ============================================
   模块：时间轴 / Timeline（双栏布局）
   ============================================ */

/* 双栏容器 */
.timeline-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl) var(--spacing-2xl);
  flex: 1;
}

/* 时间轴 + 人像布局 */
.timeline-portrait-layout {
  display: flex;
  gap: var(--spacing-2xl);
  align-items: flex-start;
}
.timeline-portrait-col {
  flex-shrink: 0;
  text-align: center;
}
.timeline-portrait-img {
  width: 180px;
  height: 240px;
  object-fit: cover;
  border-radius: 6px;
  border: 3px solid var(--color-accent);
  filter: sepia(0.3) saturate(0.7);
  display: block;
}
.timeline-portrait-caption {
  margin-top: var(--spacing-sm);
  font-family: var(--font-heading);
  font-size: var(--fs-note);
  color: var(--color-accent);
  line-height: 1.6;
}

@media (max-width: 768px) {
  .timeline-portrait-layout {
    flex-direction: column;
    align-items: center;
  }
  .timeline-portrait-img {
    width: 150px;
    height: 200px;
  }
  .timeline-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .timeline-portrait-col {
    margin-bottom: var(--spacing-lg);
  }
}

.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-color);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-lg);
  padding-left: var(--spacing-md);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -28px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid var(--bg-card);
  box-shadow: 0 0 0 2px var(--color-primary-light);
}

.timeline-year {
  font-family: var(--font-heading);
  font-size: var(--fs-card-title);
  color: var(--color-primary);
  font-weight: 700;
}

.timeline-desc {
  font-size: var(--fs-body-sm);
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
}

/* ============================================
   模块：专家委员会
   ============================================ */

.experts-intro {
  padding: var(--spacing-lg) var(--spacing-xl);
}

.experts-series-title {
  font-family: var(--font-heading);
  font-size: var(--fs-h3);
  color: var(--color-accent);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-accent);
}

.experts-series-desc {
  font-size: var(--fs-body-sm);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

.experts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.expert-card {
  background: var(--bg-card);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.expert-card-vacant {
  opacity: 0.6;
  filter: grayscale(0.3);
}

.expert-card-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.expert-avatar-wrap {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--bg-section);
}

.expert-avatar {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.expert-avatar-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: var(--fs-card-title);
  color: var(--color-muted);
  background: var(--bg-section);
}

.expert-center-name {
  font-size: var(--fs-body);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.expert-chief-label {
  font-size: var(--fs-note);
  color: var(--text-secondary);
}

.expert-center-intro {
  font-size: var(--fs-note);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-sm);
  padding: var(--spacing-sm);
  background: rgba(200,153,89,0.06);
  border-radius: 4px;
  border-left: 2px solid var(--color-accent);
}

.expert-bio {
  font-size: var(--fs-note-sm);
  color: var(--text-tertiary);
  line-height: 1.6;
  margin-top: var(--spacing-sm);
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--border-light);
}

.expert-bio p { margin: 0; }

.expert-affiliation {
  font-size: var(--fs-note-sm);
  color: var(--color-primary-light);
  margin-top: var(--spacing-xs);
}

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

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

/* ============================================
   模块：弹窗/Modal
   ============================================ */

.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
}
.modal-overlay.open { display: flex; }

.modal {
  background: var(--bg-card);
  border-radius: 8px;
  width: 100%;
  max-width: 720px;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.modal-title {
  font-family: var(--font-heading);
  font-size: var(--fs-h3);
  color: var(--color-primary);
  font-weight: 700;
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  color: var(--text-secondary);
  font-size: 20px;
  transition: all var(--transition-fast);
}
.modal-close:hover {
  background: var(--bg-section);
  color: var(--text-primary);
}

.modal-body {
  padding: var(--spacing-lg);
}

/* ============================================
   模块：分页
   ============================================ */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-lg);
}

.pagination button {
  min-width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  font-size: var(--fs-body-sm);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}
.pagination button:hover:not(.active):not(:disabled) {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.pagination button.active {
  background: var(--color-primary);
  color: var(--text-on-dark);
  border-color: var(--color-primary);
}
.pagination button:disabled {
  color: var(--text-tertiary);
  cursor: not-allowed;
}

/* ============================================
   辅助工具类
   ============================================ */

.text-center  { text-align: center; }
.text-left    { text-align: left; }
.text-right   { text-align: right; }
.text-accent  { color: var(--color-accent); }
.text-primary { color: var(--color-primary); }
.text-muted   { color: var(--text-tertiary); }
.mt-sm  { margin-top: var(--spacing-sm); }
.mt-md  { margin-top: var(--spacing-md); }
.mt-lg  { margin-top: var(--spacing-lg); }
.mt-xl  { margin-top: var(--spacing-xl); }
.mb-sm  { margin-bottom: var(--spacing-sm); }
.mb-md  { margin-bottom: var(--spacing-md); }
.mb-lg  { margin-bottom: var(--spacing-lg); }
.mb-xl  { margin-bottom: var(--spacing-xl); }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.hidden { display: none !important; }
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ============================================
   模块：沈家本箴言轮播图
   ============================================ */

.quotes-carousel {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: 8px;
  overflow: hidden;
  background: var(--color-primary);
  cursor: default;
}

.quotes-carousel-track {
  width: 100%;
  height: 100%;
  position: relative;
}

.quotes-carousel-slide {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  opacity: 0;
  transition: opacity 0.6s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.quotes-carousel-slide.active {
  opacity: 1;
  z-index: 1;
}

.quotes-carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: var(--color-primary);
}

.quotes-carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 36px; height: 36px;
  border: none;
  border-radius: 50%;
  background: rgba(0,0,0,0.35);
  color: #fff;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
  opacity: 0;
}

.quotes-carousel:hover .quotes-carousel-arrow {
  opacity: 1;
}

.quotes-carousel-arrow:hover {
  background: rgba(0,0,0,0.6);
}

.quotes-carousel-prev { left: 12px; }
.quotes-carousel-next { right: 12px; }

.quotes-carousel-dots {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  gap: 6px;
}

.quotes-carousel-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  padding: 0;
}

.quotes-carousel-dot.active {
  background: var(--color-accent);
  width: 20px;
  border-radius: 4px;
}

.quotes-carousel-counter {
  position: absolute;
  bottom: 30px;
  right: 12px;
  z-index: 10;
  font-size: 12px;
  color: rgba(255,255,255,0.6);
  font-family: var(--font-body);
  background: rgba(0,0,0,0.35);
  padding: 2px 8px;
  border-radius: 10px;
}

@media (max-width: 768px) {
  .quotes-carousel {
    /* 竖版比例由 responsive.css 统一控制 */
    max-height: 460px;
  }
  .quotes-carousel-arrow {
    width: 30px; height: 30px;
    font-size: 13px;
    opacity: 0.7;
  }
  .quotes-carousel-counter {
    bottom: 28px;
    right: 8px;
    font-size: 11px;
  }
}

/* ── 成果出版物卡片 ──────────────────────────── */
.pub-card {
  display: flex;
  flex-direction: column;
}

.pub-cover {
  width: 100%;
  aspect-ratio: 2/3;
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #1a2d4a, #203B64);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.pub-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.pub-card:hover .pub-cover img {
  transform: scale(1.04);
}

.pub-cover-fallback {
  width: 100%;
  aspect-ratio: 2/3;
  border-radius: 4px;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #1a2d4a, #203B64);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.35);
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  letter-spacing: 0.1em;
}

.pub-title {
  font-family: var(--font-heading);
  font-size: var(--fs-card-title);
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.5;
}

.pub-meta {
  font-size: var(--fs-note);
  color: var(--text-secondary);
}

.pub-publisher {
  font-size: var(--fs-note-sm);
  color: var(--text-tertiary);
  margin-top: 4px;
}