:root{--bg: #f5f6f8;--panel: #ffffff;--border: #e3e6ea;--text: #1f2329;--muted: #8a9099;--accent: #2f6bff;--danger: #e5484d;--ok: #30a46c;--warn: #f5a623}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text)}.app-shell{display:flex;min-height:100vh}.sidebar{width:200px;background:#11151c;color:#c9d1d9;padding:18px 12px;display:flex;flex-direction:column;gap:4px}.sidebar h1{font-size:15px;color:#fff;margin:0 0 16px;line-height:1.4}.nav-item{padding:9px 12px;border-radius:8px;cursor:pointer;font-size:14px;color:#c9d1d9;border:none;background:transparent;text-align:left}.nav-item:hover{background:#1c2230}.nav-item.active{background:var(--accent);color:#fff}.main{flex:1;padding:24px 32px;overflow:auto}.page-title{font-size:20px;font-weight:600;margin:0 0 4px}.page-sub{color:var(--muted);margin:0 0 20px;font-size:13px}.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:18px;margin-bottom:16px}.grid{display:grid;gap:16px}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}.stat{font-size:28px;font-weight:700}.stat-label{color:var(--muted);font-size:13px}table{width:100%;border-collapse:collapse;font-size:13px}th,td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--border)}th{color:var(--muted);font-weight:600}.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;background:#eef1f5;color:var(--muted)}.badge.active{background:#e6f6ee;color:var(--ok)}.badge.dissolved{background:#fdecec;color:var(--danger)}.badge.immunity{background:#fff4e0;color:var(--warn)}button.btn{background:var(--accent);color:#fff;border:none;border-radius:8px;padding:8px 14px;cursor:pointer;font-size:13px}button.btn:hover{opacity:.9}button.btn.danger{background:var(--danger)}button.btn:disabled{opacity:.5;cursor:not-allowed}input,textarea,select{border:1px solid var(--border);border-radius:8px;padding:8px 10px;font-size:13px;font-family:inherit;width:100%}.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.muted{color:var(--muted);font-size:13px}.error{color:var(--danger);font-size:13px}.ok{color:var(--ok);font-size:13px}.bar{height:8px;background:#eef1f5;border-radius:4px;overflow:hidden}.bar>span{display:block;height:100%;background:var(--accent)}.tree-node{padding:6px 0}.tree-children{padding-left:18px;border-left:1px solid var(--border);margin-left:6px}