/* ===== SCI学术导航 全局样式 ===== */
:root{
  --primary:#1a73e8;--primary-dark:#1557b0;--accent:#e8710a;
  --bg:#f5f7fa;--card:#fff;--text:#202124;--text-light:#5f6368;
  --border:#e0e0e0;--shadow:0 1px 3px rgba(0,0,0,.08);--shadow-hover:0 4px 12px rgba(0,0,0,.12);
  --radius:8px;--q1:#1a73e8;--q2:#34a853;--q3:#fbbc04;--q4:#ea4335;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.6;font-size:14px}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}

/* ===== 顶部导航 ===== */
.topbar{background:linear-gradient(135deg,#1a73e8,#0d47a1);color:#fff;padding:0 20px;position:sticky;top:0;z-index:100;box-shadow:0 2px 8px rgba(0,0,0,.15)}
.topbar-inner{max-width:1400px;margin:0 auto;display:flex;align-items:center;height:56px;gap:20px}
.logo{font-size:22px;font-weight:700;white-space:nowrap;display:flex;align-items:center;gap:8px}
.logo span{background:#fff;color:var(--primary);padding:2px 8px;border-radius:4px;font-size:14px}
.search-box{flex:1;max-width:380px;position:relative;display:flex;align-items:center;margin:0;padding:0}
.search-box input{flex:1 1 auto;min-width:0;width:calc(100% - 72px);max-width:calc(100% - 72px);padding:8px 16px 8px 36px;border:none;border-radius:20px 0 0 20px;font-size:14px;outline:none;background:rgba(255,255,255,.95) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23999' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='m21 21-4.35-4.35'/%3E%3C/svg%3E") no-repeat 12px center;box-sizing:border-box}
.search-btn{flex:0 0 auto;display:inline-block;padding:8px 20px;border:none;border-radius:0 20px 20px 0;background:linear-gradient(135deg,#e8710a,#d65d00);color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:all .2s;white-space:nowrap;height:38px;line-height:22px;text-decoration:none;box-sizing:border-box;position:relative;z-index:10}
.search-btn:hover{background:linear-gradient(135deg,#d65d00,#b84e00);box-shadow:0 2px 8px rgba(232,113,10,.4)}
.topbar-links{display:flex;gap:16px;font-size:14px}
.topbar-links a{opacity:.9;transition:opacity .2s}
.topbar-links a:hover{opacity:1;text-decoration:underline}

/* ===== 学科快捷导航条 ===== */
.cat-nav{background:#fff;border-bottom:1px solid var(--border);padding:0 20px}
.cat-nav-inner{max-width:1400px;margin:0 auto;display:flex;flex-wrap:wrap;justify-content:center;gap:6px;padding:10px 0}
.cat-nav a{padding:6px 14px;border-radius:16px;font-size:13px;color:var(--text-light);transition:all .2s}
.cat-nav a:hover,.cat-nav a.active{background:var(--primary);color:#fff}

/* ===== 主体容器 ===== */
.container{max-width:1400px;margin:0 auto;padding:20px}
.breadcrumb{font-size:13px;color:var(--text-light);margin-bottom:16px}
.breadcrumb a{color:var(--primary)}
.breadcrumb a:hover{text-decoration:underline}

/* ===== 学科区块 ===== */
.section{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:24px;overflow:hidden}
.section-header{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--border);background:linear-gradient(90deg,#f8f9fa,#fff)}
.section-title{font-size:17px;font-weight:600;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.section-title .icon{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:16px;color:#fff}
.section-more{font-size:12px;color:var(--primary);cursor:pointer;font-weight:400;margin-left:4px}
.section-more:hover{text-decoration:underline}
.section-body{padding:16px 20px}

/* ===== 期刊卡片网格（首页固定10列一行） ===== */
.journal-grid{display:grid;grid-template-columns:repeat(10,1fr);gap:10px}
.journal-card{display:flex;flex-direction:column;align-items:center;text-align:center;gap:8px;padding:12px 6px;border:1px solid var(--border);border-radius:var(--radius);transition:all .2s;cursor:pointer;background:#fff}
.journal-card:hover{border-color:var(--primary);box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.journal-cover{width:70px;height:90px;border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:700;color:#fff;text-align:center;line-height:1.2;padding:4px;flex-shrink:0;overflow:hidden;letter-spacing:.5px;box-shadow:0 2px 6px rgba(0,0,0,.15);position:relative}
.journal-cover img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;border-radius:inherit}
.journal-info{width:100%;min-width:0}
.journal-name{font-size:12px;font-weight:600;color:var(--text);margin-bottom:6px;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;line-height:1.35;text-align:center}
.journal-meta{display:flex;flex-wrap:wrap;gap:4px;font-size:10px;justify-content:center}
.badge{display:inline-block;padding:1px 6px;border-radius:3px;font-weight:600;line-height:1.5}
.badge-if{background:#e8f0fe;color:var(--primary)}
.badge-jcr{background:#e6f4ea;color:#137333}
.badge-cas{background:#fef7e0;color:#b06000}
.badge-q1{background:var(--q1);color:#fff}
.badge-q2{background:var(--q2);color:#fff}
.badge-q3{background:var(--q3);color:#fff}
.badge-q4{background:var(--q4);color:#fff}

/* ===== 学科分类卡片（首页） ===== */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px;margin-bottom:24px}
.cat-card{background:var(--card);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);transition:all .2s;cursor:pointer;border-left:4px solid var(--primary)}
.cat-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.cat-card h3{font-size:16px;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.cat-card p{font-size:12px;color:var(--text-light)}
.cat-card .count{font-size:11px;color:var(--primary);margin-top:8px;font-weight:600}

/* ===== 统计横幅 ===== */
.stats-bar{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-bottom:24px}
.stat-item{background:var(--card);border-radius:var(--radius);padding:16px;text-align:center;box-shadow:var(--shadow)}
.stat-num{font-size:28px;font-weight:700;color:var(--primary)}
.stat-label{font-size:12px;color:var(--text-light);margin-top:4px}

/* ===== 表格样式（学科页） ===== */
.journal-table{width:100%;border-collapse:collapse;font-size:13px}
.journal-table th{background:#f8f9fa;padding:10px 12px;text-align:left;font-weight:600;border-bottom:2px solid var(--border);position:sticky;top:0}
.journal-table td{padding:10px 12px;border-bottom:1px solid var(--border)}
.journal-table tr:hover{background:#f8f9fa}
.journal-table .cover-cell{width:50px}
.journal-table .journal-cover{width:42px;height:54px;font-size:8px;box-shadow:none}
.journal-table .name-cell{font-weight:600}
.journal-table .name-cell a{color:var(--primary)}
.journal-table .name-cell a:hover{text-decoration:underline}

/* ===== 筛选栏 ===== */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px;align-items:center}
.filter-bar select,.filter-bar input{padding:6px 12px;border:1px solid var(--border);border-radius:4px;font-size:13px;outline:none}
.filter-bar select:focus,.filter-bar input:focus{border-color:var(--primary)}
.filter-bar label{font-size:13px;color:var(--text-light)}

/* ===== 后台管理 ===== */
.admin-layout{display:grid;grid-template-columns:240px 1fr;min-height:calc(100vh - 56px)}
.admin-sidebar{background:#202124;color:#fff;padding:20px 0}
.admin-sidebar h2{padding:0 20px 16px;font-size:16px;border-bottom:1px solid #3c4043}
.admin-sidebar nav a{display:block;padding:12px 20px;color:#bdc1c6;font-size:14px;transition:all .2s}
.admin-sidebar nav a:hover,.admin-sidebar nav a.active{background:#3c4043;color:#fff;border-left:3px solid var(--primary)}
.admin-main{padding:24px;overflow-x:auto}
.admin-main h1{font-size:20px;margin-bottom:20px}
.btn{padding:8px 16px;border:none;border-radius:4px;font-size:13px;cursor:pointer;transition:all .2s;font-weight:500}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark)}
.btn-danger{background:#ea4335;color:#fff}
.btn-danger:hover{background:#c5221f}
.btn-secondary{background:#e8eaed;color:var(--text)}
.btn-secondary:hover{background:#dadce0}
.btn-sm{padding:4px 10px;font-size:12px}
.admin-table{width:100%;border-collapse:collapse;font-size:13px;background:#fff}
.admin-table th{background:#f8f9fa;padding:10px;text-align:left;border-bottom:2px solid var(--border)}
.admin-table td{padding:10px;border-bottom:1px solid var(--border)}
.admin-table tr:hover{background:#f8f9fa}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13px;font-weight:500;margin-bottom:4px;color:var(--text-light)}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:8px 12px;border:1px solid var(--border);border-radius:4px;font-size:14px;outline:none}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary)}
.modal-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.5);z-index:1000;align-items:center;justify-content:center}
.modal-overlay.active{display:flex}
.modal{background:#fff;border-radius:8px;padding:24px;width:90%;max-width:600px;max-height:90vh;overflow-y:auto}
.modal h3{margin-bottom:20px;font-size:18px}
.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:20px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}

/* ===== 页脚 ===== */
.footer{background:#202124;color:#9aa0a6;text-align:center;padding:24px 20px;margin-top:40px;font-size:13px}
.footer a{color:#8ab4f8}

/* ===== 响应式 ===== */
@media(max-width:768px){
  .topbar-inner{flex-wrap:wrap;height:auto;padding:10px 0;gap:10px}
  .search-box{order:3;max-width:100%;width:100%}
  .topbar-links{font-size:12px;gap:10px}
  .container{padding:12px}
  .journal-grid{grid-template-columns:repeat(5,1fr);gap:10px}
  .journal-card{padding:12px 8px}
  .journal-cover{width:64px;height:84px;font-size:9px}
  .journal-name{font-size:11px}
  .cat-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .cat-card{padding:14px}
  .section-body{padding:12px}
  .admin-layout{grid-template-columns:1fr}
  .admin-sidebar{display:none}
  .stats-bar{grid-template-columns:repeat(2,1fr)}
  .form-row{grid-template-columns:1fr}
  .journal-table{font-size:12px}
  .journal-table th,.journal-table td{padding:6px 8px}
}
@media(max-width:480px){
  .journal-grid{grid-template-columns:repeat(2,1fr)}
  .cat-grid{grid-template-columns:1fr}
}

/* ===== 工具类 ===== */
.hidden{display:none!important}
.text-center{text-align:center}
.mt-20{margin-top:20px}
.mb-20{margin-bottom:20px}
.empty-state{text-align:center;padding:40px;color:var(--text-light)}
.empty-state .icon{font-size:48px;margin-bottom:12px}

/* ===== 期刊详情页 ===== */
.journal-detail-header{display:flex;gap:24px;align-items:flex-start;padding:24px;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:16px;flex-wrap:wrap}
.detail-cover{flex-shrink:0}
.detail-cover .journal-cover{width:120px;height:156px;font-size:14px}
.detail-info{flex:1;min-width:200px}
.detail-title{font-size:24px;font-weight:700;color:var(--text);margin-bottom:4px;line-height:1.3}
.detail-title-cn{font-size:16px;color:var(--text-light);margin-bottom:12px}
.detail-badges{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.detail-badges .badge{font-size:13px;padding:4px 10px}
.badge-cites{background:#f3e5f5;color:#7b1fa2}
.badge-oa{background:#e8f5e9;color:#2e7d32}
.badge-unknown{background:#f5f5f5;color:#999}
.detail-meta{display:flex;gap:20px;flex-wrap:wrap;font-size:14px;color:var(--text-light)}
.detail-meta code{background:#f5f5f5;padding:2px 6px;border-radius:4px;font-size:13px}
.detail-quick-bar{display:flex;gap:16px;align-items:center;padding:14px 20px;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:16px;flex-wrap:wrap}
.detail-official-link{display:inline-block;padding:10px 24px;background:linear-gradient(135deg,#1a73e8,#1557b0);color:#fff;border-radius:20px;font-size:14px;font-weight:600;transition:all .2s}
.detail-official-link:hover{box-shadow:0 4px 12px rgba(26,115,232,.4);transform:translateY(-1px)}
.detail-oa{font-size:14px;color:var(--text)}
.detail-section{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:16px;overflow:hidden}
.detail-section-title{font-size:17px;font-weight:600;padding:14px 20px;border-bottom:1px solid var(--border);background:linear-gradient(90deg,#f8f9fa,#fff);margin:0}
.detail-section-body{padding:20px;font-size:14px;line-height:1.8;color:var(--text)}
.detail-section-body p{margin-bottom:10px}
.review-time-box{background:linear-gradient(135deg,#fff8e1,#fffde7);border:1px solid #ffe082;border-radius:8px;padding:16px 20px}
.review-time-content{font-size:15px;font-weight:600;color:#e65100;line-height:2}
.review-time-note{font-size:12px;color:#999;margin-top:10px;font-weight:400}
.back-link{display:inline-block;padding:10px 28px;background:#f5f5f5;color:var(--text);border-radius:20px;font-size:14px;transition:all .2s}
.back-link:hover{background:#e0e0e0}

@media(max-width:768px){
  .journal-detail-header{flex-direction:column;align-items:center;text-align:center}
  .detail-cover .journal-cover{width:90px;height:118px}
  .detail-title{font-size:20px}
  .detail-badges{justify-content:center}
  .detail-meta{justify-content:center}
  .detail-quick-bar{flex-direction:column;align-items:stretch;text-align:center}
}

/* ===== 首页左右布局 ===== */
.home-layout{display:flex;gap:20px;align-items:flex-start}
.home-main{flex:1;min-width:0}
.home-sidebar{width:240px;flex-shrink:0;position:sticky;top:76px}
.sidebar-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:14px;overflow:hidden}
.sidebar-title{font-size:15px;font-weight:600;padding:12px 16px;margin:0;border-bottom:1px solid var(--border);background:linear-gradient(90deg,#f8f9fa,#fff)}
.sidebar-links{list-style:none;margin:0;padding:8px 0}
.sidebar-links li{padding:0}
.sidebar-links a{display:block;padding:8px 16px;font-size:13px;color:var(--text-light);transition:all .15s;text-decoration:none}
.sidebar-links a:hover{background:#f0f7ff;color:var(--primary);padding-left:20px}

@media(max-width:1024px){
  .home-layout{flex-direction:column}
  .home-sidebar{width:100%;position:static;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
  .sidebar-card{margin-bottom:0}
}
@media(max-width:600px){
  .home-sidebar{grid-template-columns:repeat(2,1fr)}
}

/* ===== 顶部导航服务栏目 ===== */
.cat-nav-sep{display:inline-block;width:1px;height:16px;background:#ddd;margin:0 8px;vertical-align:middle}
.cat-nav-service{color:#e8710a!important;font-weight:500}
.cat-nav-service:hover{background:#fff8f0!important}

/* ===== 顶部导航下拉菜单 ===== */
.cat-nav-dropdown{position:relative;display:inline-block}
.cat-nav-dropdown-menu{
  display:none;position:absolute;top:100%;left:0;z-index:1000;
  background:#fff;border:1px solid #e5e7eb;border-radius:8px;
  box-shadow:0 8px 24px rgba(0,0,0,.12);min-width:180px;padding:6px 0;
}
.cat-nav-dropdown:hover .cat-nav-dropdown-menu{display:block}
.cat-nav-dropdown-menu a{
  display:block;padding:8px 16px;color:#374151;font-size:13px;
  text-decoration:none;white-space:nowrap;transition:background .15s;
}
.cat-nav-dropdown-menu a:hover{background:#f3f4f6;color:#e8710a}
.dropdown-empty{padding:12px 16px;color:#9ca3af;font-size:13px;text-align:center}

/* ===== 滚动公告栏 ===== */
.announcement-bar{
  background:linear-gradient(90deg,#fff8f0,#fef3c7);
  border-bottom:1px solid #fde68a;padding:8px 0;
}
.announcement-inner{
  max-width:1200px;margin:0 auto;padding:0 20px;
  display:flex;align-items:center;gap:10px;
}
.announcement-icon{font-size:16px;flex-shrink:0;z-index:2}
.announcement-viewport{
  flex:1;overflow:hidden;position:relative;height:20px;
}
.announcement-text{
  display:inline-block;white-space:nowrap;
  color:#92400e;font-size:13px;font-weight:500;
  animation:announcementScroll 25s linear infinite;
  position:absolute;left:0;top:0;line-height:20px;
}
@keyframes announcementScroll{
  0%{transform:translateX(100%)}
  100%{transform:translateX(-100%)}
}
@media(max-width:768px){
  .announcement-text{font-size:12px;animation-duration:18s}
}

/* ===== 顶部蓝色栏服务栏目下拉菜单 ===== */
.topbar-links{display:flex;align-items:center;gap:4px}
.topbar-dropdown{position:relative}
.topbar-service-link{
  color:#fff!important;font-size:14px;padding:6px 10px;border-radius:6px;
  white-space:nowrap;cursor:pointer;
}
.topbar-service-link:hover{background:rgba(255,255,255,.15)}
.topbar-dropdown-menu{
  display:none;position:absolute;top:100%;right:0;z-index:1000;
  background:#fff;border:1px solid #e5e7eb;border-radius:8px;
  box-shadow:0 8px 24px rgba(0,0,0,.15);min-width:180px;padding:6px 0;
}
.topbar-dropdown:hover .topbar-dropdown-menu{display:block}
.topbar-dropdown-menu a{
  display:block;padding:8px 16px;color:#374151;font-size:13px;
  text-decoration:none;white-space:nowrap;transition:background .15s;
}
.topbar-dropdown-menu a:hover{background:#f3f4f6;color:#e8710a}

/* ===== 三大件：热门榜 / 预警名单 / 随机探索 / 相似期刊 ===== */
.hot-panels{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:24px}
.hot-panel{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.hot-panel-title{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 16px;font-size:15px;font-weight:700;color:#fff;
}
.hot-panel-title .hot-panel-sub{font-size:11px;font-weight:400;opacity:.85}
.hot-panel.hot .hot-panel-title{background:linear-gradient(135deg,#e8710a,#f59e0b)}
.hot-panel.warn .hot-panel-title{background:linear-gradient(135deg,#d32f2f,#ef5350)}
.hot-list{padding:6px 0;max-height:360px;overflow-y:auto}
.hot-item{
  display:flex;align-items:center;gap:8px;padding:7px 14px;
  text-decoration:none;color:var(--text);transition:background .15s;border-bottom:1px solid #f3f4f6;
}
.hot-item:hover{background:#fff7ed}
.hot-medal{width:26px;text-align:center;font-size:14px;flex-shrink:0}
.hot-rank{display:inline-block;width:20px;height:20px;line-height:20px;text-align:center;background:#f3f4f6;border-radius:50%;font-size:12px;color:#6b7280;font-weight:600}
.hot-name{flex:1;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hot-trend{color:#e8710a;font-size:11px;flex-shrink:0}
.hot-if{font-size:12px;font-weight:700;color:#1a73e8;flex-shrink:0}
.hot-tag{font-size:11px;padding:1px 6px;border-radius:4px;font-weight:600;flex-shrink:0}
.tag-q1{background:#e8f5e9;color:#2e7d32}
.tag-q2{background:#e3f2fd;color:#1565c0}
.tag-q3{background:#fff8e1;color:#f57f17}
.tag-q4{background:#fce4ec;color:#c62828}
.hot-cat{font-size:11px;color:var(--text-light);flex-shrink:0}
.warn-item{
  display:flex;align-items:center;gap:8px;padding:7px 14px;
  text-decoration:none;color:var(--text);transition:background .15s;border-bottom:1px solid #f3f4f6;
}
.warn-item:hover{background:#fff3f3}
.warn-badge{font-size:11px;color:#fff;padding:2px 8px;border-radius:4px;font-weight:600;flex-shrink:0}
.warn-name{flex:1;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.warn-meta{font-size:11px;color:var(--text-light);flex-shrink:0}
.warn-year{font-size:11px;color:#9ca3af;flex-shrink:0}
.warn-nolink{cursor:default;opacity:.8}

/* 随机探索 */
.random-bar{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.random-bar h3{font-size:16px;color:var(--text);margin:0}
.random-btn{
  background:linear-gradient(135deg,#1a73e8,#4285f4);color:#fff;border:none;
  padding:7px 16px;border-radius:20px;font-size:13px;cursor:pointer;transition:transform .15s,box-shadow .15s;
}
.random-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(26,115,232,.3)}
.random-hint{font-size:12px;color:var(--text-light)}
/* 随便看看：一行9本期刊 + 行末广告位 */
.random-grid{display:grid;grid-template-columns:repeat(10,1fr);gap:10px}
.random-ad{display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px;padding:12px 6px;border:1px dashed #f0b27a;border-radius:var(--radius);background:linear-gradient(180deg,#fff8f0,#ffefdb);position:relative;min-height:100%;box-sizing:border-box}
.random-ad:hover{border-color:#e8710a;box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.random-ad-badge{position:absolute;top:6px;right:6px;font-size:9px;color:#b45309;background:#ffe0b2;padding:1px 5px;border-radius:3px}
.random-ad-title{font-size:12px;font-weight:700;color:#b45309;margin-top:8px;line-height:1.4;overflow:hidden;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical}
.random-ad-desc{font-size:10px;color:#92400e;line-height:1.5;overflow:hidden;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical}
.random-ad img,.random-ad video{max-width:100%;max-height:70px;border-radius:6px;display:block}
@media(max-width:768px){
  .random-grid{grid-template-columns:repeat(5,1fr);gap:10px}
}

/* 相似期刊（详情页） */
.similar-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:10px}

@media(max-width:900px){
  .hot-panels{grid-template-columns:1fr}
  .similar-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:600px){
  .similar-grid{grid-template-columns:repeat(2,1fr)}
  .hot-name{font-size:12px}
  .hot-cat{display:none}
}

/* ===== 数据更新时间 ===== */
.detail-data-date{
  margin-top:10px;display:inline-block;font-size:12px;color:#fff;
  background:#1a73e8;padding:3px 12px;border-radius:12px;
}

/* ===== Book学术风格首页搜索区 ===== */
.hero-search{
  background:linear-gradient(135deg,#1a73e8,#0d47a1);
  border-radius:16px;padding:36px 24px 28px;text-align:center;
  margin-bottom:24px;box-shadow:0 8px 24px rgba(13,71,161,.2);
}
.hero-logo{
  font-size:40px;font-weight:800;color:#fff;letter-spacing:2px;
  margin-bottom:20px;text-shadow:0 2px 8px rgba(0,0,0,.2);
}
.hero-search-wrap{
  max-width:720px;margin:0 auto;display:flex;gap:0;border-radius:50px;
  background:#fff;padding:6px;box-shadow:0 4px 16px rgba(0,0,0,.2);
}
.hero-search-wrap input{
  flex:1;border:none;outline:none;font-size:15px;padding:10px 18px;
  background:transparent;color:var(--text);border-radius:50px;
}
.hero-search-btn{
  background:#e8710a;color:#fff;border:none;padding:10px 28px;
  border-radius:40px;font-size:15px;font-weight:600;cursor:pointer;
  transition:background .2s;white-space:nowrap;
}
.hero-search-btn:hover{background:#d05a00}
.hero-stats{
  display:flex;justify-content:center;gap:28px;margin-top:20px;flex-wrap:wrap;
}
.hero-stat{color:rgba(255,255,255,.9);font-size:13px}
.hero-stat span{font-size:20px;font-weight:700;color:#fff;margin-right:4px}
.hero-cats{
  display:flex;justify-content:center;gap:8px;margin-top:18px;flex-wrap:wrap;
}
.hero-cat-tag{
  color:rgba(255,255,255,.85);font-size:12px;padding:4px 12px;
  border:1px solid rgba(255,255,255,.3);border-radius:16px;
  text-decoration:none;transition:all .2s;
}
.hero-cat-tag:hover{background:rgba(255,255,255,.2);color:#fff}

/* ===== 科研动态 ===== */
.news-section{margin-top:8px}
.news-item{
  display:flex;gap:12px;padding:12px 4px;border-bottom:1px solid #f3f4f6;
  align-items:flex-start;
}
.news-item:hover{background:#f9fafb;border-radius:8px;padding-left:8px}
.news-tag{
  flex-shrink:0;font-size:11px;color:#fff;padding:2px 8px;border-radius:4px;margin-top:2px;
}
.news-content{flex:1}
.news-title{font-size:14px;font-weight:600;color:var(--text)}
.news-desc{font-size:12px;color:var(--text-light);margin-top:4px;line-height:1.6}
.news-date{font-size:11px;color:#9ca3af;margin-top:4px}
.news-more{text-align:right;padding-top:10px}

@media(max-width:768px){
  .hero-search{padding:24px 16px}
  .hero-logo{font-size:28px}
  .hero-search-wrap input{font-size:13px;padding:8px 12px}
  .hero-search-btn{padding:8px 16px;font-size:13px}
  .hero-stats{gap:14px}
  .hero-stat{font-size:11px}
  .hero-stat span{font-size:16px}
}