/* ============================================================
   topic-collection.css — 威胁情报收集与标准化 子课题分页专用样式
   （topic-collection.html / -02 / -03 / -04）
   与 ../../style.css 及 threat-intel.css 全局变量兼容
   ============================================================ */

/* ===== 分页器（子课题分页） ===== */
.apt-pager{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:36px;padding:18px 22px;background:#fff;border:1px solid var(--border);border-radius:14px}
.apt-pager.bottom{margin:40px 0 0}
.pager-btn{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:10px;font-size:14px;font-weight:600;text-decoration:none;border:1.5px solid var(--border);color:var(--text-secondary);background:#fff;transition:var(--transition)}
.pager-btn:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow)}
.pager-btn.primary{background:var(--primary-gradient);color:#fff;border-color:transparent;box-shadow:0 4px 14px rgba(26,110,255,.28)}
.pager-btn.primary:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(26,110,255,.36);color:#fff}
.pager-steps{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.p-label{font-size:12px;color:var(--text-light);font-weight:600;margin-right:4px}
.pager-steps a{width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;color:var(--text-secondary);background:#fff;border:1.5px solid var(--border);text-decoration:none;transition:var(--transition)}
.pager-steps a:hover{border-color:var(--primary);color:var(--primary)}
.pager-steps a.active{background:var(--primary-gradient);color:#fff;border-color:transparent;box-shadow:0 4px 12px rgba(26,110,255,.3)}

/* ===== 主体布局：侧边目录 + 内容 ===== */
.content-grid{display:grid;grid-template-columns:250px minmax(0,1fr);gap:36px;align-items:start}
.content-sidebar{position:sticky;top:96px}
.sidebar-nav{background:#fff;border:1px solid var(--border);border-radius:14px;padding:20px}
.sidebar-nav h4{font-size:13px;font-weight:800;color:var(--text);margin-bottom:12px;padding-bottom:10px;border-bottom:1px solid var(--border);letter-spacing:.5px}
.sidebar-nav>ul{list-style:none;padding:0;margin:0}
.sidebar-nav>ul>li{margin-bottom:2px}
.sidebar-nav>ul a{display:block;padding:8px 12px;border-radius:8px;font-size:13px;color:var(--text-secondary);text-decoration:none;line-height:1.5;transition:var(--transition);border-left:2px solid transparent}
.sidebar-nav>ul a:hover{background:var(--primary-light);color:var(--primary)}
.sidebar-nav>ul a.active{background:var(--primary-light);color:var(--primary);font-weight:700;border-left-color:var(--primary)}
.mini-pager{margin-top:16px;padding-top:14px;border-top:1px dashed var(--border);display:flex;flex-direction:column;gap:6px}
.mini-pager a{display:flex;align-items:center;gap:8px;padding:9px 12px;border-radius:8px;font-size:12px;font-weight:600;color:var(--text-secondary);text-decoration:none;border:1px solid var(--border);transition:var(--transition)}
.mini-pager a:hover{border-color:var(--primary);color:var(--primary)}
.mini-pager a.active{background:var(--primary-gradient);color:#fff;border-color:transparent}
.content-main{min-width:0}

/* ===== 内容区块 ===== */
.content-section{background:#fff;border:1px solid var(--border);border-radius:16px;padding:36px 40px;margin-bottom:28px;scroll-margin-top:96px}
.content-section h2{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:900;color:var(--text);margin:0 0 20px;padding-bottom:14px;border-bottom:2px solid var(--primary-light);letter-spacing:.3px}
.content-section h2::before{content:'';width:5px;height:22px;background:var(--primary-gradient);border-radius:3px;flex-shrink:0}
.content-section h3{font-size:17px;font-weight:800;color:var(--text);margin:28px 0 12px;padding-left:12px;border-left:3px solid var(--primary);line-height:1.5}
.content-section h4{font-size:15px;font-weight:700;color:var(--text);margin:18px 0 10px}
.content-section p{font-size:14.5px;color:var(--text-secondary);line-height:1.95;margin-bottom:14px}
.content-section p strong,.content-section li strong{color:var(--text);font-weight:700}
.content-section ul,.content-section ol{padding-left:22px;margin-bottom:14px}
.content-section li{font-size:14px;color:var(--text-secondary);line-height:1.9;margin-bottom:8px}
.content-section a{color:var(--primary)}
.src-note{font-size:12px !important;color:var(--text-light) !important;font-style:italic;margin-top:10px !important;margin-bottom:0 !important}

/* ===== 表格 ===== */
.table-wrap{overflow-x:auto;margin:16px 0;border:1px solid var(--border);border-radius:12px;-webkit-overflow-scrolling:touch}
.data-table{width:100%;border-collapse:collapse;font-size:13px;min-width:560px}
.data-table th{background:var(--primary-light);color:var(--text);font-weight:700;text-align:left;padding:12px 14px;white-space:nowrap;border-bottom:2px solid rgba(26,110,255,.15)}
.data-table td{padding:11px 14px;border-bottom:1px solid var(--border);color:var(--text-secondary);line-height:1.7;vertical-align:top}
.data-table tr:last-child td{border-bottom:none}
.data-table tr:hover td{background:rgba(26,110,255,.025)}
.data-table td strong{color:var(--text)}
.t-id{font-family:ui-monospace,'SF Mono',Consolas,monospace;font-size:12px;font-weight:700;color:var(--primary);background:var(--primary-light);padding:2px 8px;border-radius:6px;white-space:nowrap}

/* ===== 关键数字卡 ===== */
.kv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:20px 0}
.kv-card{background:linear-gradient(135deg,var(--primary-light) 0%,rgba(26,110,255,.02) 100%);border:1px solid rgba(26,110,255,.12);border-radius:14px;padding:20px;transition:var(--transition)}
.kv-card:hover{border-color:rgba(26,110,255,.3);box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.kv-num{font-size:30px;font-weight:900;color:var(--primary);line-height:1;font-variant-numeric:tabular-nums}
.kv-label{font-size:13px;font-weight:700;color:var(--text);margin-top:8px}
.kv-desc{font-size:12px;color:var(--text-secondary);line-height:1.7;margin-top:6px}

/* ===== 图表框 ===== */
.figure-box{background:linear-gradient(180deg,#fbfcff 0%,#ffffff 100%);border:1px solid var(--border);border-radius:14px;padding:22px;margin:22px 0;overflow:hidden}
.figure-title{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:800;color:var(--text);margin-bottom:4px}
.figure-title::before{content:'';width:8px;height:8px;background:var(--primary-gradient);border-radius:2px;transform:rotate(45deg);flex-shrink:0}
.figure-sub{font-size:12px;color:var(--text-light);margin-bottom:14px}
.figure-box canvas{width:100%;display:block;max-width:100%}
.figure-src{font-size:11.5px;color:var(--text-light);margin-top:12px;padding-top:10px;border-top:1px dashed var(--border);line-height:1.7}
.chart-legend{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:12px;justify-content:center;row-gap:8px}
.chart-legend .lg-item{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-secondary);font-weight:500}
.chart-legend .lg-dot{width:10px;height:10px;border-radius:3px;flex-shrink:0}

/* ===== 提示框 ===== */
.info-box{background:var(--primary-light);border-left:4px solid var(--primary);border-radius:0 12px 12px 0;padding:16px 20px;margin:18px 0}
.info-box p{font-size:13.5px;color:var(--text-secondary);line-height:1.85;margin:0}
.info-box p strong{color:var(--text)}
.warn-box{background:#fff8f0;border-left:4px solid #f57c00;border-radius:0 12px 12px 0;padding:16px 20px;margin:18px 0}
.warn-box p{font-size:13.5px;color:#7a4a12;line-height:1.85;margin:0}
.warn-box p strong{color:#5c3609}

/* ===== 代码块（STIX JSON 示例等） ===== */
.code-block{background:#0f172a;border-radius:12px;padding:20px 22px;margin:16px 0;overflow-x:auto;-webkit-overflow-scrolling:touch}
.code-block pre{margin:0;font-family:ui-monospace,'SF Mono',Consolas,monospace;font-size:12.5px;line-height:1.75;color:#dbeafe;white-space:pre}
.code-cap{font-size:12px;font-weight:700;color:var(--text-light);margin:14px 0 6px}

/* ===== 参考来源 ===== */
.ref-list{display:flex;flex-direction:column;gap:10px}
.ref-item{display:flex;gap:14px;background:#fff;border:1px solid var(--border);border-radius:10px;padding:14px 18px;transition:var(--transition)}
.ref-item:hover{border-color:rgba(26,110,255,.2);box-shadow:var(--shadow)}
.ref-num{font-size:12px;font-weight:800;color:var(--primary);background:var(--primary-light);padding:2px 8px;border-radius:6px;flex-shrink:0;height:fit-content;font-family:ui-monospace,Consolas,monospace}
.ref-item p{font-size:12.5px;color:var(--text-secondary);line-height:1.75;margin:0;word-break:break-all}
.ref-item a{color:var(--primary);text-decoration:none;word-break:break-all}
.ref-item a:hover{text-decoration:underline}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .content-grid{grid-template-columns:1fr}
  .content-sidebar{position:static}
  .sidebar-nav>ul{display:flex;flex-wrap:wrap;gap:4px}
  .sidebar-nav>ul a{border-left:none;border:1px solid var(--border);border-radius:100px;padding:6px 14px;font-size:12px}
  .sidebar-nav>ul a.active{border-color:var(--primary)}
  .mini-pager{flex-direction:row;flex-wrap:wrap}
}
@media (max-width:768px){
  .kv-grid{grid-template-columns:1fr 1fr}
  .kv-num{font-size:24px}
  .content-section{padding:24px 18px}
  .content-section h2{font-size:19px}
  .apt-pager{flex-direction:column;align-items:stretch}
  .pager-btn{justify-content:center}
  .pager-steps{justify-content:center}
  .figure-box{padding:16px 10px}
  .figure-title{font-size:14px}
}
@media (max-width:420px){
  .kv-grid{grid-template-columns:1fr}
}