/* =========================================
   原创论文风格 CSS v3.0
   编码: gb2312 | 参考设计风格
   ========================================= */

/* === 变量定义 === */
:root {
  --primary: #0066cc;
  --primary-dark: #004c99;
  --primary-light: #e6f0fa;
  --primary-hover: #0052a3;
  
  --accent: #cc0000;
  --accent-orange: #ff6600;
  --accent-green: #009933;
  
  --text-dark: #333333;
  --text-body: #555555;
  --text-light: #999999;
  --text-muted: #aaaaaa;
  
  --bg-main: #f5f7fa;
  --bg-white: #ffffff;
  --bg-gray: #f0f2f5;
  
  --border: #dce3ea;
  --border-light: #e8ecf0;
  
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  
  --radius: 6px;
  --radius-lg: 10px;
  
  --header-h: 68px;
  --max-w: 1580px;
}

/* === 基础重置 === */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Microsoft YaHei", Arial, sans-serif;
  font-size: 14px;
  line-height: 0.95;
  color: var(--text-body);
  background: var(--bg-main);
  min-height: 100vh;
}
a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--primary-dark); text-decoration: none; }
ul, ol { list-style: none; }
img { max-width: 100%; }
button { cursor: pointer; font-family: inherit; }

/* === 布局 === */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 15px;
}
.main-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 25px 15px;
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 25px;
}

/* === 顶部信息栏 === */
.top-bar {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  padding: 9px 0;
  font-size: 13px;
}
.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.top-bar strong { color: #ffdd00; }
.top-bar a { color: #fff; margin-left: 18px; opacity: 0.9; }
.top-bar a:hover { opacity: 1; text-decoration: underline; }

/* === 主导航 === */
.site-header {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 15px;
  display: flex;
  align-items: center;
  height: var(--header-h);
  gap: 35px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: bold;
  color: var(--primary);
  flex-shrink: 0;
}
.logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: bold;
  box-shadow: 0 2px 8px rgba(0,102,204,0.3);
}
.main-nav {
  display: flex;
  gap: 5px;
  flex: 1;
}
.main-nav a {
  padding: 10px 16px;
  color: var(--text-dark);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius);
  transition: all 0.2s;
}
.main-nav a:hover { background: var(--primary-light); color: var(--primary); }
.main-nav a.active { background: var(--primary); color: #fff; font-weight: 600; }

/* 搜索框 */
.header-search {
  display: flex;
  width: 280px;
}
.header-search input {
  flex: 1;
  padding: 11px 14px;
  border: 2px solid var(--border);
  border-right: none;
  border-radius: var(--radius) 0 0 var(--radius);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}
.header-search input:focus { border-color: var(--primary); }
.header-search button {
  padding: 11px 18px;
  background: var(--primary);
  color: #fff;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 14px;
  font-weight: 600;
  transition: background 0.2s;
}
.header-search button:hover { background: var(--primary-dark); }

/* === 页面Banner === */
.page-banner {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, #003366 100%);
  color: #fff;
  padding: 55px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-banner::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.page-banner h1 {
  font-size: 34px;
  font-weight: bold;
  margin-bottom: 12px;
  position: relative;
  text-shadow: 0 2px 4px rgba(0,0,0,0.15);
}
.page-banner p { font-size: 16px; opacity: 0.95; position: relative; }

/* === 面包屑 === */
.breadcrumb-bar {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  padding: 13px 0;
}
.breadcrumb {
  font-size: 13px;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-light); padding: 2px 6px; border-radius: 4px; }
.breadcrumb a:hover { background: var(--primary-light); color: var(--primary); }
.breadcrumb span { color: var(--border); }
.breadcrumb .current { color: var(--primary); font-weight: 600; }

/* === 侧边栏 === */
.sidebar-panel {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  height: fit-content;
  position: sticky;
  top: calc(var(--header-h) + 20px);
}
.sidebar-header {
  padding: 16px 20px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
}
.sidebar-header h3 { font-size: 15px; font-weight: bold; }
.sidebar-menu { padding: 12px 0; }
.sidebar-menu li a {
  display: flex;
  align-items: center;
  padding: 13px 20px;
  color: var(--text-dark);
  font-size: 14px;
  border-left: 3px solid transparent;
  transition: all 0.2s;
}
.sidebar-menu li a::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--text-muted);
  border-radius: 50%;
  margin-right: 10px;
  flex-shrink: 0;
  transition: all 0.2s;
}
.sidebar-menu li a:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-left-color: var(--primary);
}
.sidebar-menu li a:hover::before { background: var(--primary); transform: scale(1.4); }
.sidebar-menu li a.active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
  border-left-color: var(--primary);
}
.sidebar-menu li a.active::before {
  background: var(--primary);
  transform: scale(1.4);
  box-shadow: 0 0 0 3px rgba(0,102,204,0.2);
}

/* === 论文列表容器 === */
.paper-list-container {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

/* 工具栏 */
.list-toolbar {
  padding: 18px 22px;
  background: var(--bg-gray);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
}
.result-info { font-size: 15px; color: var(--text-dark); }
.result-info strong { color: var(--primary); font-size: 19px; font-weight: bold; }
.toolbar-actions { display: flex; gap: 12px; }
.btn-action {
  padding: 9px 18px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.btn-action:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); }
.btn-warn {
  padding: 9px 18px;
  background: var(--accent-orange);
  color: #fff;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  transition: all 0.2s;
}
.btn-warn:hover { background: #cc5200; color: #fff; transform: translateY(-1px); }

/* 论文项 */
.paper-item {
  display: flex;
  gap: 18px;
  padding: 22px;
  border-bottom: 1px solid var(--border-light);
  transition: background 0.2s;
}
.paper-item:last-child { border-bottom: none; }
.paper-item:hover { background: var(--bg-gray); }
.item-num {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
  color: #fff;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 15px;
  flex-shrink: 0;
  box-shadow: 0 2px 6px rgba(0,102,204,0.25);
}
.item-body { flex: 1; min-width: 0; }
.item-title {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 9px;
  line-height: 1.5;
  transition: color 0.2s;
}
.item-title:hover { color: var(--primary); }
.item-desc {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 12px;
  line-height: 1.6;
}
.item-tags { display: flex; flex-wrap: wrap; gap: 9px; }
.tag {
  padding: 5px 13px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  transition: all 0.2s;
}
.tag-blue { background: var(--primary-light); color: var(--primary); }
.tag-green { background: #e6f7ed; color: var(--accent-green); }
.tag-orange { background: #fff4e6; color: var(--accent-orange); }
.tag-gray { background: var(--bg-gray); color: var(--text-light); }
.tag:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }

/* 空结果 */
.empty-result { text-align: center; padding: 70px 40px; }
.empty-icon {
  width: 90px;
  height: 90px;
  margin: 0 auto 22px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 42px;
  font-weight: bold;
}
.empty-result h3 { font-size: 22px; color: var(--text-dark); margin-bottom: 10px; }
.empty-result p { color: var(--text-light); margin-bottom: 8px; font-size: 14px; }
.empty-result .btn-primary {
  display: inline-block;
  margin-top: 22px;
  padding: 13px 32px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 15px;
  transition: all 0.2s;
}
.empty-result .btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); }

/* 分页 */
.pagination-wrap { padding: 22px; background: var(--bg-gray); border-top: 1px solid var(--border); }
.pagination { display: flex; align-items: center; justify-content: center; gap: 7px; flex-wrap: wrap; }
.pagination a, .pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 13px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--text-dark);
  font-weight: 500;
  transition: all 0.2s;
}
.pagination a:hover { background: var(--primary-light); border-color: var(--primary); color: var(--primary); }
.pagination .current { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: bold; }
.page-info { margin-left: 15px; color: var(--text-light); font-size: 13px; }

/* === 详情页 === */
.content-area {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.paper-header {
  padding: 28px;
  background: linear-gradient(135deg, var(--primary-light) 0%, #fff 100%);
  border-bottom: 2px solid var(--border);
}
.paper-header h2 {
  font-size: 24px;
  font-weight: bold;
  color: var(--text-dark);
  margin-bottom: 18px;
  line-height: 1.4;
}
.paper-nav { display: flex; flex-wrap: wrap; gap: 9px; }
.paper-nav a {
  padding: 9px 16px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--text-dark);
  font-weight: 500;
  transition: all 0.2s;
}
.paper-nav a:hover { background: var(--primary); border-color: var(--primary); color: #fff; }
.paper-nav .btn-accent { background: var(--accent-orange); border-color: var(--accent-orange); color: #fff; }
.paper-nav .btn-orange { background: var(--accent); border-color: var(--accent); color: #fff; }
.paper-nav .btn-green { background: var(--accent-green); border-color: var(--accent-green); color: #fff; }

/* 信息表格 */
.info-table { padding: 28px; }
.info-row {
  display: flex;
  gap: 22px;
  padding: 22px 0;
  border-bottom: 1px solid var(--border-light);
}
.info-row:last-child { border-bottom: none; }
.info-label {
  width: 120px;
  flex-shrink: 0;
  font-weight: 600;
  color: var(--primary);
  font-size: 14px;
  padding-top: 3px;
  border-left: 3px solid var(--primary);
  padding-left: 12px;
}
.info-value { flex: 1; font-size: 14px; line-height: 1.8; color: var(--text-body); }
.info-value p { margin-bottom: 8px; }
.info-value p:last-child { margin-bottom: 0; }

/* 上下篇 */
.nav-pager {
  padding: 22px 28px;
  background: var(--bg-gray);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  gap: 20px;
}
.nav-pager p { font-size: 14px; color: var(--text-light); flex: 1; }
.nav-pager strong { color: var(--text-dark); }
.nav-pager a { color: var(--primary); font-weight: 600; }
.nav-pager a:hover { text-decoration: underline; }

/* === 首页样式 === */
.hero-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, #003366 100%);
  color: #fff;
  padding: 75px 0;
  position: relative;
  overflow: hidden;
}
.hero-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 55px;
  align-items: center;
  position: relative;
}
.hero-badge {
  display: inline-block;
  padding: 8px 18px;
  background: rgba(255,255,255,0.2);
  border-radius: 25px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 22px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.3);
}
.hero-title {
  font-size: 44px;
  font-weight: bold;
  line-height: 1.2;
  margin-bottom: 18px;
  text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.hero-title em { font-style: normal; color: #fbbf24; }
.hero-desc { font-size: 17px; opacity: 0.95; margin-bottom: 30px; line-height: 1.8; }
.hero-actions { display: flex; gap: 15px; }
.btn-primary {
  padding: 15px 30px;
  background: #fff;
  color: var(--primary);
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 700;
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary:hover { background: #fbbf24; color: var(--primary-dark); transform: translateY(-3px); box-shadow: 0 8px 20px rgba(0,0,0,0.2); }
.btn-secondary {
  padding: 15px 30px;
  background: rgba(255,255,255,0.15);
  color: #fff;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  border: 2px solid rgba(255,255,255,0.4);
  backdrop-filter: blur(10px);
  transition: all 0.25s ease;
}
.btn-secondary:hover { background: rgba(255,255,255,0.25); color: #fff; transform: translateY(-3px); }
.hero-visual { text-align: center; }
.hero-card {
  background: rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 35px;
  backdrop-filter: blur(15px);
  border: 1px solid rgba(255,255,255,0.25);
}
.hero-card img { border-radius: var(--radius); margin-bottom: 18px; }
.hero-card p { font-size: 15px; opacity: 0.9; font-weight: 500; }

/* 滚动公告 */
.scroll-bar { background: #fffbeb; border-bottom: 1px solid #fde68a; padding: 11px 0; }
.scroll-bar-inner { display: flex; align-items: center; gap: 15px; }
.scroll-label { flex-shrink: 0; padding: 5px 12px; background: var(--accent-orange); color: #fff; border-radius: 4px; font-size: 12px; font-weight: bold; }
.scroll-list { flex: 1; overflow: hidden; }
.scroll-list li { display: flex; justify-content: space-between; font-size: 14px; color: #92400e; }
.scroll-list a { color: #92400e; font-weight: 600; }
.scroll-list a:hover { color: var(--accent-orange); }

/* 服务区块 */
.section { padding: 70px 0; background: var(--bg-white); }
.section-header { text-align: center; margin-bottom: 45px; }
.section-tag {
  display: inline-block;
  padding: 5px 18px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 25px;
  font-size: 12px;
  font-weight: bold;
  letter-spacing: 2px;
  margin-bottom: 14px;
  border: 1px solid rgba(0,102,204,0.2);
}
.section-title { font-size: 34px; font-weight: bold; color: var(--text-dark); margin-bottom: 12px; }
.section-subtitle { font-size: 16px; color: var(--text-light); }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.service-card {
  padding: 30px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
  display: block;
}
.service-card:hover { border-color: var(--primary); box-shadow: var(--shadow-lg); transform: translateY(-5px); }
.service-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: var(--radius);
  margin-bottom: 18px;
  box-shadow: 0 4px 12px rgba(0,102,204,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}
.service-icon svg { width: 30px; height: 30px; fill: #fff; }
.service-card h3 { font-size: 18px; font-weight: bold; color: var(--text-dark); margin-bottom: 9px; }
.service-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; }

/* 论文列表区域 */
.papers-section { padding: 70px 0; background: var(--bg-gray); }
.layout-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.paper-panel { background: var(--bg-white); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); overflow: hidden; }
.panel-header { padding: 18px 22px; background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%); color: #fff; display: flex; align-items: center; gap: 12px; }
.panel-header .icon { width: 32px; height: 32px; background: rgba(255,255,255,0.2); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; font-weight: bold; }
.panel-header h2 { flex: 1; font-size: 16px; font-weight: bold; }
.panel-header .badge { padding: 4px 10px; background: var(--accent-orange); border-radius: 12px; font-size: 11px; font-weight: bold; }

/* Tab */
.tab-header { display: flex; border-bottom: 1px solid var(--border); }
.tab-btn { flex: 1; padding: 14px 18px; font-size: 14px; font-weight: 600; color: var(--text-light); background: var(--bg-gray); border-bottom: 3px solid transparent; transition: all 0.2s; }
.tab-btn:hover { color: var(--primary); background: var(--primary-light); }
.tab-btn.active { color: var(--primary); background: var(--bg-white); border-bottom-color: var(--primary); }
.tab-content { display: none; padding: 18px 22px; }
.tab-content.active { display: block; }

/* 首页论文列表 */
.paper-list { max-height: 460px; overflow-y: auto; }
.paper-list li { display: flex; align-items: flex-start; gap: 12px; padding: 13px 0; border-bottom: 1px solid var(--border-light); }
.paper-list li:last-child { border-bottom: none; }
.paper-list .idx { width: 24px; height: 24px; background: var(--bg-gray); color: var(--text-light); border-radius: 4px; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: bold; flex-shrink: 0; }
.paper-list .idx.hot { background: linear-gradient(135deg, var(--accent), #e11d48); color: #fff; }
.paper-list a { flex: 1; font-size: 14px; color: var(--text-dark); line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.paper-list a:hover { color: var(--primary); }
.paper-list .qq-tag { font-size: 11px; color: var(--accent); font-weight: 600; white-space: nowrap; }
.more-link { display: block; padding: 15px 22px; text-align: center; background: var(--bg-gray); color: var(--primary); font-size: 14px; font-weight: 600; border-top: 1px solid var(--border); transition: all 0.2s; }
.more-link:hover { background: var(--primary-light); }

/* 联系我们卡片 */
.contact-box { text-align: center; padding: 28px; }
.contact-icon { width: 65px; height: 65px; margin: 0 auto 18px; background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 30px; font-weight: bold; box-shadow: 0 4px 15px rgba(0,102,204,0.3); }
.contact-box h3 { font-size: 19px; font-weight: bold; color: var(--text-dark); margin-bottom: 12px; }
.highlight-num { font-size: 30px; font-weight: bold; color: var(--primary); margin-bottom: 18px; }
.contact-info { text-align: left; background: var(--bg-gray); border-radius: var(--radius); padding: 18px; }
.contact-info p { padding: 7px 0; font-size: 14px; color: var(--text-dark); border-bottom: 1px dashed var(--border); }
.contact-info p:last-child { border-bottom: none; }

/* 链接区域 */
.links-area { padding: 45px 0; }
.links-area h3 { font-size: 19px; font-weight: bold; color: var(--text-dark); margin-bottom: 22px; }
.link-tags { display: flex; flex-wrap: wrap; gap: 11px; }
.link-tags a { padding: 11px 18px; background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); font-size: 13px; color: var(--text-dark); font-weight: 500; transition: all 0.2s; }
.link-tags a:hover { background: var(--primary); border-color: var(--primary); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-sm); }

/* === 页脚 === */
.site-footer { background: #1e293b; color: #94a3b8; padding: 55px 0 0; margin-top: 70px; position: relative; }
.footer-glow { position: absolute; top: 0; left: 50%; transform: translateX(-50%); width: 450px; height: 4px; background: linear-gradient(90deg, transparent, var(--primary), transparent); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 45px; padding-bottom: 45px; border-bottom: 1px solid #334155; }
.footer-brand .logo { color: #fff; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: #94a3b8; }
.footer-col h4 { font-size: 15px; font-weight: bold; color: #fff; margin-bottom: 18px; padding-bottom: 10px; border-bottom: 2px solid var(--primary); display: inline-block; }
.footer-col ul li { margin-bottom: 11px; }
.footer-col a { color: #94a3b8; font-size: 14px; transition: color 0.2s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { padding: 22px 0; text-align: center; font-size: 13px; }
.footer-bottom a { color: var(--primary-light); }
.footer-bottom a:hover { color: #fff; }

/* === 悬浮侧栏 === */
.float-bar { position: fixed; right: 22px; bottom: 95px; display: flex; flex-direction: column; gap: 9px; z-index: 99; }
.float-bar a { display: block; padding: 11px 16px; background: var(--primary); color: #fff; border-radius: var(--radius); font-size: 13px; font-weight: 600; box-shadow: var(--shadow-lg); transition: all 0.25s ease; text-align: center; }
.float-bar a:first-child { background: var(--accent); }
.float-bar a:hover { transform: translateX(-5px) scale(1.02); box-shadow: 0 12px 28px rgba(0,102,204,0.35); }
.float-bar .back-top { width: 44px; height: 44px; padding: 0; display: flex; align-items: center; justify-content: center; border-radius: 50%; font-size: 18px; background: var(--primary-dark); }

/* === 滚动条 === */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-gray); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary-light); }

/* === 响应式 === */
@media (max-width: 992px) {
  .main-wrap { grid-template-columns: 1fr; }
  .hero-grid { grid-template-columns: 1fr; text-align: center; gap: 35px; }
  .layout-grid { grid-template-columns: 1fr; }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .hero-title { font-size: 30px; }
  .section-title { font-size: 26px; }
  .page-banner h1 { font-size: 24px; }
  .paper-header h2 { font-size: 20px; }
  .paper-nav { overflow-x: auto; flex-wrap: nowrap; -webkit-overflow-scrolling: touch; }
  .paper-nav a { flex-shrink: 0; }
  .info-row { flex-direction: column; gap: 8px; }
  .info-label { width: auto; border-left: none; padding-left: 0; border-bottom: 2px solid var(--primary); padding-bottom: 7px; }
  .nav-pager { flex-direction: column; gap: 12px; }
  .service-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; text-align: center; }
  .pagination { justify-content: flex-start; overflow-x: auto; flex-wrap: nowrap; -webkit-overflow-scrolling: touch; }
  .pagination a, .pagination span { flex-shrink: 0; }
  .header-inner { gap: 15px; }
  .main-nav { display: none; }
  .header-search { width: 100%; }
  .hero-actions { flex-direction: column; align-items: center; }
}