:root{--fx-blue: #1f4e9c;--fx-blue-dark: #183d7a;--fx-blue-light: #eef3fa;--fx-text: #333;--fx-text-secondary: #666;--fx-text-light: #999;--fx-border: #e0e0e0;--fx-link: #1f4e9c;--fx-orange: #e8853d;--fx-bg: #f5f6f8;--fx-container: 1080px}*{box-sizing:border-box}body{margin:0;font-family:Microsoft YaHei,PingFang SC,Helvetica Neue,Arial,sans-serif;color:var(--fx-text);background:var(--fx-bg);font-size:14px;line-height:1.7}a{color:var(--fx-link);text-decoration:none}a:hover{color:var(--fx-orange)}.fx-topbar{background:var(--fx-blue);border-bottom:3px solid var(--fx-blue-dark);position:sticky;top:0;z-index:100}.fx-topbar-inner{max-width:var(--fx-container);margin:0 auto;padding:0 16px;height:56px;display:flex;align-items:center;gap:24px}.fx-logo{display:flex;flex-direction:column;line-height:1.15;color:#fff;flex-shrink:0}.fx-logo:hover{color:#fff}.fx-logo-cn{font-size:20px;font-weight:700;letter-spacing:2px}.fx-logo-en{font-size:10px;opacity:.75;letter-spacing:1px}.fx-nav{display:flex;gap:4px;flex:1}.fx-nav-item{color:#ffffffe0;padding:6px 14px;border-radius:3px;font-size:15px;white-space:nowrap;flex-shrink:0}.fx-nav-item:hover{background:var(--fx-blue-dark);color:#fff}.fx-nav-item.active{background:var(--fx-blue-dark);color:#fff;font-weight:600}.fx-topbar-search{width:300px;flex-shrink:0}@media (max-width: 960px){.fx-topbar-inner{gap:14px}.fx-topbar-search{width:180px}.fx-nav-item{padding:6px 10px;font-size:14px}}.fx-main{min-height:calc(100vh - 220px)}.fx-container{max-width:var(--fx-container);margin:0 auto;padding:20px 16px 48px}.fx-footer{background:#fff;border-top:1px solid var(--fx-border);padding:24px 16px 32px;margin-top:40px}.fx-footer-inner{max-width:var(--fx-container);margin:0 auto;text-align:center}.fx-footer-disclaimer{color:var(--fx-text-secondary);font-size:12px;line-height:1.8}.fx-footer-links{font-size:13px;margin:8px 0}.fx-footer-icp{color:var(--fx-text-light);font-size:12px}.fx-hero{background:linear-gradient(180deg,var(--fx-blue) 0%,#2a5db0 100%);padding:56px 16px 64px;text-align:center;color:#fff}.fx-hero-title{font-size:34px;font-weight:700;letter-spacing:4px;margin:0 0 6px}.fx-hero-sub{font-size:14px;opacity:.85;margin:0 0 28px;letter-spacing:1px}.fx-hero-search{max-width:720px;margin:0 auto}.fx-hero-meta{margin-top:14px;font-size:12px;opacity:.75}.fx-home-section{max-width:var(--fx-container);margin:24px auto;padding:0 16px}.fx-home-section-title{font-size:17px;font-weight:700;color:var(--fx-blue);border-left:4px solid var(--fx-blue);padding-left:10px;margin:0 0 14px;display:flex;justify-content:space-between;align-items:baseline}.fx-home-section-title a{font-size:13px;font-weight:400}.fx-entry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.fx-entry-card{background:#fff;border:1px solid var(--fx-border);border-top:3px solid var(--fx-blue);padding:18px 16px;border-radius:4px;display:block;color:var(--fx-text)}.fx-entry-card:hover{border-color:var(--fx-blue);box-shadow:0 2px 8px #1f4e9c1f}.fx-entry-card h3{margin:0 0 8px;font-size:15px;color:var(--fx-blue)}.fx-entry-card p{margin:0;font-size:12px;color:var(--fx-text-secondary)}.fx-searchbar{display:flex;width:100%}.fx-searchbar select{border:2px solid var(--fx-blue);border-right:none;background:#fff;padding:0 10px;font-size:14px;color:var(--fx-text);border-radius:3px 0 0 3px;outline:none}.fx-searchbar input{flex:1;border:2px solid var(--fx-blue);border-right:none;padding:10px 12px;font-size:14px;outline:none;min-width:0}.fx-searchbar button{background:var(--fx-blue);color:#fff;border:2px solid var(--fx-blue);padding:0 26px;font-size:15px;cursor:pointer;border-radius:0 3px 3px 0;white-space:nowrap}.fx-searchbar button:hover{background:var(--fx-blue-dark)}.fx-searchbar.compact select{display:none}.fx-searchbar.compact input{border:1px solid rgba(255,255,255,.5);background:#ffffff26;color:#fff;padding:5px 10px;font-size:13px;border-radius:3px 0 0 3px}.fx-searchbar.compact input::placeholder{color:#ffffffb3}.fx-searchbar.compact button{border:1px solid rgba(255,255,255,.5);padding:0 14px;font-size:13px;background:#ffffff1f}.fx-result-bar{background:#fff;border:1px solid var(--fx-border);padding:12px 16px;margin-bottom:14px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;border-radius:4px}.fx-result-count{color:var(--fx-text-secondary);font-size:13px}.fx-result-count b{color:var(--fx-orange)}.fx-result-filter{font-size:13px;display:flex;align-items:center;gap:8px}.fx-result-filter label{color:var(--fx-text-secondary);cursor:pointer;-webkit-user-select:none;user-select:none}.fx-card{background:#fff;border:1px solid var(--fx-border);border-radius:4px;padding:16px 20px;margin-bottom:12px}.fx-card:hover{border-color:var(--fx-blue)}.fx-card-title{font-size:17px;font-weight:700;margin:0 0 6px}.fx-card-title a mark,.fx-card mark{background:#ffe9a8;padding:0 1px}.fx-card-meta{font-size:12px;color:var(--fx-text-light);margin-bottom:8px;display:flex;flex-wrap:wrap;gap:4px 16px}.fx-card-meta span b{color:var(--fx-text-secondary);font-weight:600}.fx-card-abstract{font-size:13px;color:var(--fx-text-secondary);background:var(--fx-blue-light);padding:10px 12px;border-radius:3px;margin:0 0 8px}.fx-card-abstract b{color:var(--fx-text)}.fx-card-keywords{font-size:12px;margin-bottom:8px}.fx-card-keywords b{color:var(--fx-text-secondary)}.fx-card-keywords .fx-kw{margin-right:6px}.fx-card-footer{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--fx-text-light)}.fx-card-category{background:var(--fx-blue-light);color:var(--fx-blue);padding:1px 8px;border-radius:2px;font-size:12px}.fx-empty{background:#fff;border:1px dashed var(--fx-border);text-align:center;padding:60px 0;color:var(--fx-text-light);border-radius:4px}.fx-fav-btn{border:1px solid var(--fx-border);background:#fff;color:var(--fx-text-secondary);font-size:12px;padding:3px 12px;border-radius:3px;cursor:pointer}.fx-fav-btn:hover{border-color:var(--fx-orange);color:var(--fx-orange)}.fx-fav-btn.faved{border-color:var(--fx-orange);color:var(--fx-orange);background:#fff7ef}.fx-fav-btn.large{font-size:14px;padding:6px 18px}.fx-theory-header{background:#fff;border:1px solid var(--fx-border);border-top:3px solid var(--fx-blue);border-radius:4px;padding:24px 28px;margin-bottom:16px}.fx-theory-title{font-size:22px;font-weight:700;margin:0 0 10px}.fx-theory-meta{font-size:13px;color:var(--fx-text-secondary);border-bottom:1px dashed var(--fx-border);padding-bottom:12px;margin-bottom:14px;display:flex;flex-wrap:wrap;gap:4px 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