/* ============================================================
   analysis.css — 加密机制与漏洞分析（子课题02）专题样式
   与全局 style.css 变量体系完全兼容
   ============================================================ */

/* ===== 顶部面包屑条下的专题工具条 ===== */
.ana-lead { background: linear-gradient(180deg,#f0f5ff 0%,#fff 100%); padding: 32px 0 0; }
.ana-lead-inner { display:flex; flex-wrap:wrap; gap:12px; align-items:center; justify-content:space-between; }
.ana-series { display:flex; align-items:center; gap:10px; flex-wrap:wrap; }
.ana-series .s-item { font-size:12px; font-weight:600; color:var(--text-light); background:#fff; border:1px solid var(--border); padding:5px 12px; border-radius:100px; text-decoration:none; transition:var(--transition); }
.ana-series .s-item:hover { color:var(--primary); border-color:var(--primary); }
.ana-series .s-item.on { background:var(--primary-gradient); color:#fff; border-color:transparent; }
.ana-progress { font-size:12px; color:var(--text-light); font-weight:600; }

/* ===== 通用组件 ===== */
.ana-section { padding: 64px 0; }
.ana-section.alt { background: var(--bg-warm); }
.ana-h2 { font-size:clamp(22px,3vw,28px); font-weight:800; margin-bottom:10px; }
.ana-h2::before { content:''; display:inline-block; width:6px; height:22px; background:var(--primary-gradient); border-radius:3px; margin-right:12px; vertical-align:-2px; }
.ana-sub { font-size:15px; color:var(--text-secondary); line-height:1.9; max-width:840px; margin-bottom:32px; }
.ana-h3 { font-size:18px; font-weight:700; margin:28px 0 12px; }
.ana-p { font-size:14.5px; color:var(--text-secondary); line-height:2; margin-bottom:14px; max-width:920px; }
.ana-p strong { color:var(--text); }
.ana-note { font-size:12.5px; color:var(--text-light); border-left:3px solid var(--border); padding-left:14px; margin:18px 0; line-height:1.9; }

/* 术语行内代码 */
code.mono, .mono { font-family:'JetBrains Mono','Consolas','SFMono-Regular',monospace; font-size:.92em; background:var(--primary-light); color:var(--primary-dark); padding:2px 7px; border-radius:6px; }

/* 提示框 */
.callout { display:flex; gap:12px; align-items:flex-start; border-radius:var(--radius); padding:18px 20px; font-size:14px; line-height:1.9; margin:20px 0; max-width:960px; }
.callout svg { flex-shrink:0; margin-top:3px; }
.callout.info { background:var(--primary-light); color:#1e3a6e; border:1px solid rgba(26,110,255,.2); }
.callout.info svg { color:var(--primary); }
.callout.warn { background:#fff7ed; color:#7c2d12; border:1px dashed rgba(234,88,12,.35); }
.callout.warn svg { color:#ea580c; }
.callout.danger { background:#fef2f2; color:#7f1d1d; border:1px dashed rgba(220,38,38,.3); }
.callout.danger svg { color:#dc2626; }
.callout.success { background:#f0fdf4; color:#14532d; border:1px solid rgba(22,163,74,.2); }
.callout.success svg { color:#16a34a; }

/* 双栏/三栏卡片 */
.ana-grid { display:grid; gap:20px; margin:28px 0; }
.ana-grid.c2 { grid-template-columns:repeat(2,1fr); }
.ana-grid.c3 { grid-template-columns:repeat(3,1fr); }
.ana-card { background:#fff; border:1px solid var(--border); border-radius:var(--radius); padding:26px; transition:var(--transition); position:relative; overflow:hidden; }
.ana-card:hover { box-shadow:var(--shadow-hover); transform:translateY(-3px); }
.ana-card h4 { font-size:15.5px; font-weight:700; margin:0 0 10px; display:flex; align-items:center; gap:9px; }
.ana-card h4 svg { color:var(--primary); flex-shrink:0; }
.ana-card p { font-size:13.5px; color:var(--text-secondary); line-height:1.9; }
.ana-card .cnum { position:absolute; top:14px; right:18px; font-size:26px; font-weight:900; color:var(--primary); opacity:.12; }

/* 数据表 */
.tbl-wrap { overflow-x:auto; margin:24px 0; border:1px solid var(--border); border-radius:var(--radius); background:#fff; }
table.ana-tbl { width:100%; border-collapse:collapse; font-size:13.5px; min-width:680px; }
table.ana-tbl th { background:var(--primary-gradient); color:#fff; font-weight:700; text-align:left; padding:13px 16px; font-size:13px; white-space:nowrap; }
table.ana-tbl td { padding:12px 16px; border-top:1px solid var(--border); color:var(--text-secondary); line-height:1.8; vertical-align:top; }
table.ana-tbl tr:nth-child(even) td { background:var(--bg-warm); }
table.ana-tbl td b { color:var(--text); }
table.ana-tbl .fam { font-weight:800; color:var(--primary-dark); white-space:nowrap; }
.tbl-src { font-size:11.5px; color:var(--text-light); padding:10px 16px; border-top:1px dashed var(--border); background:#fff; }

/* 流程图（代码绘制） */
.flow { display:flex; align-items:stretch; gap:0; margin:28px 0; flex-wrap:wrap; }
.flow-node { flex:1; min-width:150px; background:#fff; border:1.5px solid var(--border); border-radius:var(--radius-sm); padding:18px 16px; position:relative; transition:var(--transition); }
.flow-node:hover { border-color:var(--primary); box-shadow:var(--shadow); }
.flow-node .f-title { font-size:14px; font-weight:700; color:var(--text); margin-bottom:6px; display:flex; align-items:center; gap:7px; }
.flow-node .f-title svg { color:var(--primary); }
.flow-node .f-desc { font-size:12px; color:var(--text-light); line-height:1.8; }
.flow-node.hot { border-color:rgba(220,38,38,.35); background:linear-gradient(180deg,#fff 60%,#fef2f2 100%); }
.flow-node.hot .f-title svg { color:#dc2626; }
.flow-arrow { display:flex; align-items:center; justify-content:center; width:34px; color:var(--primary); flex-shrink:0; }
.flow.vertical { flex-direction:column; }
.flow.vertical .flow-arrow { width:100%; height:30px; }

/* 密钥/公式展示块 */
.formula { background:#0f1a33; color:#dbe7ff; border-radius:var(--radius-sm); padding:18px 22px; font-family:'JetBrains Mono','Consolas',monospace; font-size:13px; line-height:2; margin:20px 0; overflow-x:auto; max-width:960px; }
.formula .cmt { color:#6b86c4; }
.formula .kw { color:#7dd3fc; }
.formula .str { color:#fbbf24; }
.formula { white-space: pre-wrap; word-break: break-word; overflow-wrap: anywhere; }

/* 标签页 */
.algo-tabs { display:flex; gap:8px; flex-wrap:wrap; margin:26px 0 0; }
.algo-tab { padding:10px 22px; border-radius:100px 100px 0 0; border:1.5px solid var(--border); border-bottom:none; background:var(--bg-warm); font-family:inherit; font-size:14px; font-weight:700; color:var(--text-secondary); cursor:pointer; transition:var(--transition); }
.algo-tab:hover { color:var(--primary); }
.algo-tab.active { background:#fff; color:var(--primary); border-color:rgba(26,110,255,.3); position:relative; }
.algo-panels { border:1.5px solid var(--border); border-radius:0 var(--radius) var(--radius) var(--radius); background:#fff; padding:30px; }
.algo-panel { display:none; animation:anaFade .4s ease; }
.algo-panel.active { display:block; }
@keyframes anaFade { from{opacity:0;transform:translateY(8px)} to{opacity:1;transform:translateY(0)} }
.algo-panel h4 { font-size:17px; font-weight:800; margin-bottom:14px; display:flex; align-items:center; gap:10px; }
.algo-panel h4 svg { color:var(--primary); }

/* 案例档案 + 过滤器 */
.case-filter { display:flex; gap:8px; flex-wrap:wrap; margin:24px 0; }
.cf-btn { padding:8px 18px; border-radius:100px; border:1.5px solid var(--border); background:#fff; font-family:inherit; font-size:13px; font-weight:600; color:var(--text-secondary); cursor:pointer; transition:var(--transition); }
.cf-btn:hover { border-color:var(--primary); color:var(--primary); }
.cf-btn.active { background:var(--primary-gradient); color:#fff; border-color:transparent; }
.case-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:22px; }
.case-file { background:#fff; border:1px solid var(--border); border-radius:var(--radius); overflow:hidden; transition:var(--transition); }
.case-file:hover { box-shadow:var(--shadow-hover); transform:translateY(-3px); }
.case-file .cf-head { padding:18px 22px 14px; border-bottom:1px solid var(--border); display:flex; justify-content:space-between; align-items:flex-start; gap:12px; background:linear-gradient(135deg,#f8faff 0%,#fff 100%); }
.case-file .cf-head h4 { font-size:15.5px; font-weight:800; }
.case-file .cf-year { font-size:11px; font-weight:800; color:#fff; background:linear-gradient(135deg,#dc2626,#ef4444); padding:4px 12px; border-radius:100px; white-space:nowrap; }
.case-file .cf-body { padding:18px 22px; font-size:13px; color:var(--text-secondary); line-height:1.9; }
.case-file .cf-row { display:flex; gap:8px; margin-bottom:8px; }
.case-file .cf-row b { color:var(--text); flex-shrink:0; min-width:76px; }
.case-file .cf-tags { display:flex; flex-wrap:wrap; gap:6px; margin-top:12px; padding-top:12px; border-top:1px dashed var(--border); }
.case-file .cf-tags span { font-size:11px; font-weight:700; padding:3px 10px; border-radius:100px; background:var(--primary-light); color:var(--primary); }
.case-file.hidden { display:none; }

/* 参考文献 */
.ref-group { margin:28px 0 12px; font-size:15px; font-weight:800; display:flex; align-items:center; gap:10px; }
.ref-group svg { color:var(--primary); }
ol.ref-list { counter-reset:ref; list-style:none; padding:0; }
ol.ref-list li { counter-increment:ref; position:relative; padding:12px 0 12px 52px; border-bottom:1px dashed var(--border); font-size:13.5px; color:var(--text-secondary); line-height:1.9; }
ol.ref-list li::before { content:counter(ref,decimal-leading-zero); position:absolute; left:0; top:14px; font-family:'JetBrains Mono',monospace; font-size:12px; font-weight:700; color:#fff; background:var(--primary-gradient); padding:2px 8px; border-radius:8px; }
ol.ref-list li b { color:var(--text); }
ol.ref-list li .ref-url { display:block; font-family:'JetBrains Mono',monospace; font-size:11.5px; color:var(--text-light); word-break:break-all; margin-top:2px; }

/* 上下页导航 */
.pager { display:flex; justify-content:space-between; align-items:center; gap:14px; flex-wrap:wrap; margin:48px 0 8px; }
.pager-btn { display:inline-flex; align-items:center; gap:8px; padding:14px 24px; border-radius:12px; font-size:14px; font-weight:700; text-decoration:none; transition:var(--transition); border:1.5px solid var(--border); background:#fff; color:var(--text-secondary); max-width:46%; }
.pager-btn:hover { border-color:var(--primary); color:var(--primary); box-shadow:var(--shadow); transform:translateY(-2px); }
.pager-btn.primary { background:var(--primary-gradient); color:#fff; border-color:transparent; }
.pager-btn.primary:hover { box-shadow:0 8px 24px rgba(26,110,255,.3); color:#fff; }
.pager-btn .pdir { font-size:16px; }
.pager-btn .psmall { display:block; font-size:11px; font-weight:500; opacity:.75; }
.pager-mid { font-size:12.5px; color:var(--text-light); font-weight:600; text-align:center; }

/* 迷你条形图 */
.mini-bars { display:flex; flex-direction:column; gap:10px; margin:18px 0; }
.mini-bar { display:flex; align-items:center; gap:12px; font-size:12.5px; }
.mini-bar .mb-label { width:130px; flex-shrink:0; color:var(--text-secondary); font-weight:600; }
.mini-bar .mb-track { flex:1; height:9px; background:var(--bg-warm); border-radius:5px; overflow:hidden; }
.mini-bar .mb-fill { height:100%; border-radius:5px; background:var(--primary-gradient); width:0; transition:width 1.4s ease; }
.mini-bar.hot .mb-fill { background:linear-gradient(90deg,#dc2626,#ea580c); }
.mini-bar .mb-val { width:64px; text-align:right; font-weight:700; color:var(--primary-dark); font-family:'JetBrains Mono',monospace; font-size:11.5px; }
.mini-bar.hot .mb-val { color:#dc2626; }

/* 步骤列表 */
.steps { counter-reset:step; list-style:none; padding:0; margin:24px 0; max-width:960px; }
.steps li { counter-increment:step; position:relative; padding:0 0 26px 66px; }
.steps li::before { content:counter(step); position:absolute; left:0; top:0; width:44px; height:44px; border-radius:50%; background:var(--primary-gradient); color:#fff; font-weight:800; font-size:16px; display:flex; align-items:center; justify-content:center; box-shadow:0 4px 14px rgba(26,110,255,.3); }
.steps li::after { content:''; position:absolute; left:21px; top:50px; bottom:2px; width:2px; background:linear-gradient(180deg,rgba(26,110,255,.35),rgba(26,110,255,.06)); }
.steps li:last-child::after { display:none; }
.steps li h5 { font-size:15.5px; font-weight:800; margin-bottom:6px; }
.steps li p { font-size:13.5px; color:var(--text-secondary); line-height:1.9; }

/* 响应式 */
@media (max-width:1024px) {
  .ana-grid.c3 { grid-template-columns:repeat(2,1fr); }
  .case-grid { grid-template-columns:1fr; }
}
@media (max-width:768px) {
  .ana-grid.c2,.ana-grid.c3 { grid-template-columns:1fr; }
  .flow { flex-direction:column; }
  .flow-arrow { width:100%; height:26px; }
  .pager-btn { max-width:100%; width:100%; justify-content:center; }
  .pager { flex-direction:column; }
  .pager-mid { order:-1; }
  .algo-tab { padding:9px 14px; font-size:13px; }
  .algo-panels { padding:20px; }
  .ana-section { padding:44px 0; }
}

/* ===== 移动端导航与页脚响应式（对齐 ransomware.css 断点规则） ===== */
@media (max-width:1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
}
@media (max-width:768px) {
  .nav-container { height: 64px; }
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    padding: 12px 20px;
    box-shadow: 0 8px 24px rgba(0,0,0,.08);
    gap: 2px;
    border-bottom: 1px solid var(--border);
    z-index: 999;
  }
  .nav-links.active { display: flex; }
  .nav-links a { display: block; padding: 12px 14px; border-radius: 8px; font-size: 15px; }
  .mobile-toggle { display: flex; }
  .logo-text { font-size: 14px; }
  .logo-icon img { height: 36px; }
  .footer { padding: 44px 0 24px; }
  .footer-grid { grid-template-columns: 1fr !important; gap: 26px; }
  .footer-brand p { max-width: 100%; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 6px; }
  .page-header { padding: 110px 0 36px; }
  .ana-lead { padding: 18px 0 0; }
}