:root{
  --primary:#2563eb;
  --primary-d:#1d4ed8;
  --primary-l:#eff4ff;
  --teal:#0d9488;
  --bg:#f5f7fa;
  --panel:#ffffff;
  --text:#1f2937;
  --muted:#6b7280;
  --line:#e5e7eb;
  --warn:#d97706;
  --warn-bg:#fef3c7;
  --ok:#059669;
  --ok-bg:#d1fae5;
  --err:#dc2626;
  --err-bg:#fee2e2;
  --radius:12px;
  --shadow:0 1px 3px rgba(16,24,40,.08),0 1px 2px rgba(16,24,40,.04);
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);font-size:14px;line-height:1.55;
}
#app{display:flex;height:100vh;overflow:hidden}

/* 侧边栏 */
.sidebar{
  width:232px;background:var(--panel);border-right:1px solid var(--line);
  display:flex;flex-direction:column;flex-shrink:0;
}
.brand{display:flex;align-items:center;gap:10px;padding:18px 16px;border-bottom:1px solid var(--line)}
.brand-logo{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--teal));color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:15px}
.brand-title{font-weight:700;font-size:15px}
.brand-sub{font-size:11px;color:var(--muted)}
.nav{padding:12px 10px;flex:1;display:flex;flex-direction:column;gap:4px}
.nav-item{
  display:flex;align-items:center;gap:10px;width:100%;text-align:left;
  background:none;border:none;padding:10px 12px;border-radius:9px;cursor:pointer;
  color:var(--text);font-size:14px;transition:.15s;
}
.nav-item:hover{background:var(--bg)}
.nav-item.active{background:var(--primary-l);color:var(--primary-d);font-weight:600}
.nav-ico{font-size:16px;width:20px;text-align:center}
.sidebar-foot{padding:12px 12px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:6px}

/* 主区 */
.main{flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{height:60px;background:var(--panel);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 22px;flex-shrink:0}
.topbar-title{font-size:17px;font-weight:700}
.topbar-actions{display:flex;gap:8px;align-items:center}
.badge-soft{background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:4px 12px;font-size:12px;color:var(--muted)}
.badge-soft.warn{background:var(--warn-bg);border-color:#fde68a;color:var(--warn)}

.view{padding:20px 22px;overflow:auto;flex:1}
.view.hidden,.hidden{display:none !important}

/* 工具栏 */
.toolbar{display:flex;align-items:center;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.hint{font-size:12.5px;color:var(--muted)}

/* 按钮 */
.btn-primary{background:var(--primary);color:#fff;border:none;padding:9px 16px;border-radius:9px;cursor:pointer;font-size:14px;font-weight:600}
.btn-primary:hover{background:var(--primary-d)}
.btn-ghost{background:none;border:1px solid var(--line);padding:7px 12px;border-radius:8px;cursor:pointer;color:var(--text);font-size:13px}
.btn-ghost:hover{background:var(--bg)}
.btn-ghost.danger{color:var(--err)}
.btn-ghost.danger:hover{background:var(--err-bg)}
.btn-sm{padding:5px 10px;font-size:12px}
.btn-ok{background:var(--ok);color:#fff;border:none;padding:7px 14px;border-radius:8px;cursor:pointer;font-weight:600}
.btn-ok:hover{filter:brightness(.95)}
.btn-warn{background:var(--warn);color:#fff;border:none;padding:7px 14px;border-radius:8px;cursor:pointer;font-weight:600}
.input{border:1px solid var(--line);border-radius:9px;padding:9px 12px;font-size:14px;outline:none;min-width:220px}
.input:focus{border-color:var(--primary)}

/* 客户卡片 */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.cust-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);position:relative}
.cust-card h3{margin:0 0 4px;font-size:15px}
.cust-meta{font-size:12px;color:var(--muted);margin-bottom:10px}
.cust-rows{font-size:13px;display:flex;flex-direction:column;gap:5px}
.cust-rows .row{display:flex;gap:6px}
.cust-rows .k{color:var(--muted);min-width:64px}
.cust-actions{display:flex;gap:8px;margin-top:12px}
.lic-thumb{width:100%;height:88px;object-fit:cover;border-radius:8px;border:1px solid var(--line);margin-top:8px;background:var(--bg)}
.tag{display:inline-block;background:var(--primary-l);color:var(--primary-d);border-radius:6px;padding:2px 8px;font-size:11px;margin-right:4px}

/* 链条画布 */
.canvas-wrap{flex:1;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:auto;min-height:420px;position:relative}
#chain-svg{display:block;min-width:100%;min-height:100%}
.legend{display:flex;gap:12px;flex-wrap:wrap;font-size:12px}
.legend .lg{display:flex;align-items:center;gap:5px;color:var(--muted)}
.legend .sw{width:14px;height:4px;border-radius:2px;display:inline-block}
.node-rect{fill:#fff;stroke:var(--primary);stroke-width:2;rx:10}
.node-rect.src{stroke:var(--teal)}
.node-rect.dst{stroke:var(--warn)}
.node-label{font-size:13px;font-weight:600;fill:var(--text)}
.node-sub{font-size:11px;fill:var(--muted)}
.edge-path{fill:none;stroke-width:2.5}
.edge-label{font-size:11px;fill:var(--text)}
.edge-label-bg{fill:#fff;opacity:.85}

.chain-detail{margin-top:16px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.chain-detail h3{margin:0 0 10px}
.mini-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}

/* AI */
.ai-summary{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.ai-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:14px 18px;min-width:160px;box-shadow:var(--shadow)}
.ai-card .num{font-size:24px;font-weight:700}
.ai-card .lbl{font-size:12px;color:var(--muted)}
.finding{background:var(--panel);border:1px solid var(--line);border-left:4px solid var(--muted);border-radius:10px;padding:12px 14px;margin-bottom:10px}
.finding.info{border-left-color:var(--primary)}
.finding.warning{border-left-color:var(--warn);background:var(--warn-bg)}
.finding.error{border-left-color:var(--err);background:var(--err-bg)}
.finding .ft{font-weight:600;margin-bottom:3px}
.finding .fb{font-size:13px;color:#374151}
.ai-suggest{background:var(--primary-l);border:1px solid #bfdbfe;border-radius:var(--radius);padding:14px 16px;margin-top:6px}
.ai-suggest h3{margin:0 0 8px;color:var(--primary-d)}

/* 审核 / 列表 */
.tabs{display:flex;gap:6px;margin-bottom:16px}
.tab{border:1px solid var(--line);background:#fff;padding:7px 16px;border-radius:8px;cursor:pointer;font-size:13px}
.tab.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.list-item{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;margin-bottom:10px;box-shadow:var(--shadow)}
.list-item .li-top{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.list-item .li-title{font-weight:600;font-size:14px}
.list-item .li-meta{font-size:12.5px;color:var(--muted);margin:6px 0}
.status{font-size:11px;padding:2px 10px;border-radius:999px;font-weight:600}
.status.pending{background:var(--warn-bg);color:var(--warn)}
.status.approved{background:var(--ok-bg);color:var(--ok)}
.status.rejected{background:var(--err-bg);color:var(--err)}
.li-actions{display:flex;gap:8px;margin-top:8px}
.doc-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:12px;box-shadow:var(--shadow)}
.doc-card h3{margin:0 0 6px}
.prose{max-width:820px}
.prose h2{font-size:20px;margin-top:0}
.prose h3{margin-bottom:6px}
.prose code{background:var(--bg);padding:2px 6px;border-radius:5px;font-size:12.5px}

/* 弹窗 */
.modal-mask{position:fixed;inset:0;background:rgba(15,23,42,.45);display:flex;align-items:center;justify-content:center;z-index:50;padding:20px}
.modal{background:#fff;border-radius:14px;padding:22px;width:min(560px,96vw);max-height:90vh;overflow:auto;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.modal h3{margin:0 0 14px;font-size:16px}
.form-row{margin-bottom:12px}
.form-row label{display:block;font-size:12.5px;color:var(--muted);margin-bottom:4px}
.form-row input,.form-row select,.form-row textarea{width:100%;border:1px solid var(--line);border-radius:8px;padding:9px 11px;font-size:14px;outline:none;font-family:inherit}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{border-color:var(--primary)}
.form-row .err{color:var(--err);font-size:12px;margin-top:3px}
.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:16px}
.lic-preview{max-width:100%;max-height:140px;border-radius:8px;border:1px solid var(--line);margin-top:6px}

/* 单据 */
.doc-modal{width:min(820px,96vw)}
.doc-sheet{background:#fff;padding:30px 36px;color:#111;border:1px solid var(--line);font-size:13.5px;line-height:1.8}
.doc-sheet h1{text-align:center;font-size:20px;margin:0 0 6px}
.doc-sheet .sub{text-align:center;color:#555;font-size:13px;margin-bottom:18px}
.doc-sheet .parties{display:flex;justify-content:space-between;gap:20px;margin-bottom:14px}
.doc-sheet .party{flex:1}
.doc-sheet table{border-collapse:collapse;width:100%;margin:12px 0}
.doc-sheet th,.doc-sheet td{border:1px solid #333;padding:7px 9px;font-size:13px}
.doc-sheet .sign{display:flex;justify-content:space-between;margin-top:30px;gap:20px}
.doc-sheet .sign .box{flex:1}
.doc-sheet .sign .line{border-top:1px solid #333;margin-top:34px;padding-top:4px;font-size:12px;color:#333}
.doc-toolbar{display:flex;gap:8px;justify-content:flex-end;margin-bottom:12px}

/* toast */
.toast{position:fixed;bottom:26px;left:50%;transform:translateX(-50%);background:#111827;color:#fff;padding:10px 18px;border-radius:10px;font-size:13.5px;z-index:99;box-shadow:0 8px 24px rgba(0,0,0,.3)}
@media(max-width:720px){
  .sidebar{width:64px}
  .brand-text,.nav-item span:not(.nav-ico),.sidebar-foot{display:none}
  .nav-item{justify-content:center}
}