:root{--bg:#f4f7fb;--card:#fff;--primary:#0a7ae0;--primary-d:#0a3d62;--border:#e3ecf5;--text:#12303f;--muted:#6b7785;--ok:#18a05c;--bad:#d64545}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);-webkit-text-size-adjust:100%;font-family:PingFang SC,Microsoft YaHei,system-ui,sans-serif;font-size:15px;line-height:1.6}a{color:var(--primary);text-decoration:none}.kb-wrap{max-width:720px;min-height:100vh;margin:0 auto;padding:16px}.kb-header{background:var(--card);border-bottom:1px solid var(--border);z-index:10;justify-content:space-between;align-items:center;gap:12px;padding:14px 16px;display:flex;position:sticky;top:0}.kb-header .brand{color:var(--primary-d);font-size:16px;font-weight:800}.kb-center{max-width:400px;margin:56px auto 0;padding:0 16px}.kb-logo{color:var(--primary-d);margin-bottom:4px;font-size:22px;font-weight:800}.kb-sub{color:var(--muted);margin-bottom:20px;font-size:13px}.kb-field{margin-bottom:14px}.kb-label{color:var(--muted);margin-bottom:6px;font-size:13px;display:block}.kb-input{border:1px solid var(--border);background:#fff;border-radius:10px;outline:none;width:100%;padding:12px 13px;font-size:16px}.kb-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #0a7ae01f}.kb-btn{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:10px;justify-content:center;align-items:center;gap:6px;width:100%;min-height:46px;padding:12px 16px;font-size:16px;font-weight:600;display:inline-flex}.kb-btn:disabled{opacity:.55;cursor:not-allowed}.kb-btn.secondary{color:var(--primary-d);background:#eef4fb}.kb-btn.ghost{color:var(--primary);background:0 0;width:auto;min-height:0;padding:8px 10px;font-size:14px}.kb-link{color:var(--primary);font-size:14px}.kb-err{color:var(--bad);margin-top:10px;font-size:13px}.kb-ok{color:var(--ok);margin-top:10px;font-size:13px}.kb-hero{text-align:center;padding:28px 4px 18px}.kb-hero h1{color:var(--primary-d);margin:0 0 6px;font-size:20px}.kb-hero p{color:var(--muted);margin:0 0 18px;font-size:14px}.kb-searchbar{align-items:stretch;gap:8px;display:flex}.kb-searchbar .kb-input{flex:1}.kb-searchbar .kb-btn{width:auto;padding:0 20px}.kb-card{background:var(--card);border:1px solid var(--border);color:inherit;border-radius:14px;margin-bottom:12px;padding:16px;display:block}.kb-card:hover{border-color:var(--primary)}.kb-card h3{margin:0 0 6px;font-size:16px;line-height:1.4}.kb-summary{color:#33424f;-webkit-line-clamp:2;-webkit-box-orient:vertical;margin:0 0 10px;font-size:14px;display:-webkit-box;overflow:hidden}.kb-meta{color:var(--muted);flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;display:flex}.kb-cat{color:var(--primary-d);background:#eef4fb;border-radius:999px;padding:2px 10px;font-weight:600}.kb-tag{color:#475569;background:#f1f5f9;border-radius:999px;padding:2px 9px}.kb-detail{background:var(--card);border:1px solid var(--border);border-radius:14px;margin-top:4px;padding:18px}.kb-detail h1{margin:0 0 10px;font-size:20px;line-height:1.4}.kb-detail .kb-summary-box{border-left:3px solid var(--primary);color:#2b3a46;background:#f6f9fc;border-radius:8px;margin-bottom:14px;padding:10px 12px;font-size:14px}.kb-body{white-space:pre-wrap;word-break:break-word;color:#1f2d38;margin:12px 0 16px;font-size:15px}.kb-props{border-top:1px solid var(--border);grid-template-columns:auto 1fr;gap:8px 12px;padding-top:14px;font-size:14px;display:grid}.kb-props dt{color:var(--muted)}.kb-props dd{margin:0}.kb-files{border-top:1px solid var(--border);margin-top:16px;padding-top:14px}.kb-files h4{color:var(--muted);margin:0 0 10px;font-size:14px}.kb-file{border:1px solid var(--border);border-radius:10px;justify-content:space-between;align-items:center;gap:10px;margin-bottom:8px;padding:10px 12px;display:flex}.kb-file .name{text-overflow:ellipsis;white-space:nowrap;font-size:14px;overflow:hidden}.kb-file .sz{color:var(--muted);font-size:12px}.kb-empty{text-align:center;color:var(--muted);padding:40px 0;font-size:14px}.kb-back{margin-bottom:12px}.kb-pager{justify-content:space-between;gap:10px;margin-top:8px;display:flex}.kb-pager .kb-btn{width:auto}.kb-pager .kb-btn:disabled{visibility:hidden}