/* ==========================================================
 * 极致·十五号 Jz52_f15 - 前端样式（知乎风格）
 * 作者：隔壁老李 | 白底简洁 / 卡片化 / 蓝色强调
 * ========================================================== */
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var(--jz-border)}.jz-left-nav-list li:last-child{border-bottom:0}.jz-left-nav-list a{display:block;padding:9px 14px;font-size:13px;color:var(--jz-text)}.jz-left-nav-list a:hover{color:var(--jz-color);background:var(--jz-bg)}.jz-left-nav-list a .fa{width:16px;color:var(--jz-muted);font-size:12px}.jz-left-nav-author{padding:14px;text-align:center;border-top:1px solid var(--jz-border)}.jz-left-nav-avatar{width:56px;height:56px;border-radius:50%}.jz-left-nav-author b{display:block;font-size:14px;color:var(--jz-text);margin-top:6px}.jz-left-nav-author p{font-size:12px;color:var(--jz-muted);margin-top:4px}.jz-tagcloud{background:var(--jz-card);border:1px solid var(--jz-border);border-radius:var(--jz-radius);padding:20px}.jz-tagcloud-title{font-size:17px;font-weight:600;margin-bottom:14px;color:var(--jz-text)}.jz-tagcloud-body{display:flex;flex-wrap:wrap;gap:10px}.jz-tagcloud-item{display:inline-flex;align-items:center;gap:6px;background:var(--jz-bg);color:var(--jz-text);padding:5px 12px;border-radius:var(--jz-radius);font-size:13px}.jz-tagcloud-item i{font-style:normal;font-size:11px;color:var(--jz-muted);background:var(--jz-card);border-radius:8px;padding:0 6px}.jz-tagcloud-item:hover{color:#fff;background:var(--jz-color)}.jz-tagcloud-item:hover i{color:rgba(255,255,255,.8);background:rgba(255,255,255,.18)}.jz-404{text-align:center;padding:80px 20px;background:var(--jz-card);border:1px solid var(--jz-border);border-radius:var(--jz-radius)}.jz-404-num{font-size:72px;font-weight:700;color:var(--jz-color);line-height:1}.jz-404-title{font-size:20px;margin:14px 0 6px;color:var(--jz-text)}.jz-404-text{font-size:14px;color:var(--jz-muted)}.jz-404-btns{display:flex;justify-content:center;gap:12px;margin:20px 0}.jz-404-btn{border:1px solid var(--jz-border);border-radius:var(--jz-radius);padding:8px 20px;color:var(--jz-text);background:var(--jz-bg);font-size:14px}.jz-404-btn:hover{color:var(--jz-color);border-color:var(--jz-color)}.jz-404-search form{display:flex;gap:8px;max-width:380px;margin:0 auto}.jz-404-search input{flex:1;height:36px;padding:0 12px;border:1px solid var(--jz-border);border-radius:var(--jz-radius);background:var(--jz-bg);color:var(--jz-text)}.jz-404-search button{width:64px;background:var(--jz-color);color:#fff;border-radius:var(--jz-radius)}.jz-footer{border-top:1px solid var(--jz-border);background:var(--jz-card);padding:22px 0}.jz-footer-copy{text-align:center;font-size:13px;color:var(--jz-muted);line-height:2}.jz-footer-copy a{color:var(--jz-muted)}.jz-footer-copy a:hover{color:var(--jz-color)}.jz-back-top{position:fixed;right:24px;bottom:60px;width:40px;height:40px;background:var(--jz-card);border:1px solid var(--jz-border);border-radius:50%;color:var(--jz-muted);font-size:16px;display:none;align-items:center;justify-content:center;box-shadow:var(--jz-shadow);z-index:900}.jz-back-top.show{display:flex}.jz-back-top:hover{color:var(--jz-color);border-color:var(--jz-color)}