:root{
  --brand:#de2726; --brand-dark:#c41f1e;
  --sidebar:#1e293b; --sidebar-hover:#26344a;
  --bg:#f4f5f7; --card:#ffffff;
  --text:#1a2233; --text-2:#64748b; --text-3:#9aa3b2;
  --border:#e6e8ec; --radius:8px;
}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;
  background:var(--bg); color:var(--text); font-size:14px; -webkit-font-smoothing:antialiased;
}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,select,textarea{font-family:inherit;font-size:14px;color:var(--text);outline:none}
::placeholder{color:#aab2bf}

/* ---------- login ---------- */
#login-view{display:flex;align-items:center;justify-content:center;height:100vh;background:var(--bg)}
.login-card{width:380px;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:40px 36px;box-shadow:0 8px 30px rgba(30,41,59,.06)}
.login-logo{display:flex;align-items:center;gap:12px;margin-bottom:8px}
.login-logo .mark{width:42px;height:42px;background:var(--brand);border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px;font-weight:700}
.login-title{font-size:18px;font-weight:600}
.login-sub{font-size:13px;color:var(--text-2);margin:4px 0 28px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:6px}
.field input{width:100%;height:42px;border:1px solid var(--border);border-radius:var(--radius);padding:0 12px;background:#fafbfc;transition:border-color .15s}
.field input:focus{border-color:var(--brand);background:#fff}
.btn-primary{width:100%;height:42px;background:var(--brand);color:#fff;border-radius:var(--radius);font-size:14px;font-weight:600;transition:background .15s}
.btn-primary:hover{background:var(--brand-dark)}
.login-err{color:var(--brand);font-size:13px;margin-top:10px;min-height:18px}

/* ---------- layout ---------- */
#app-view{display:none;height:100vh}
#app-view.active{display:flex}
.sidebar{width:224px;background:var(--sidebar);display:flex;flex-direction:column;flex-shrink:0}
.side-logo{display:flex;align-items:center;gap:10px;padding:20px 18px 18px;color:#fff}
.side-logo .mark{width:34px;height:34px;background:var(--brand);border-radius:7px;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;flex-shrink:0}
.side-logo .t1{font-size:15px;font-weight:600;line-height:1.2}
.side-logo .t2{font-size:11px;color:#8b98ab;margin-top:1px}
.side-nav{flex:1;padding:8px 10px;overflow-y:auto}
.nav-group{font-size:11px;color:#64748b;padding:12px 12px 6px;letter-spacing:.5px}
.nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:7px;color:#9fb0c6;font-size:13.5px;margin-bottom:2px;position:relative;transition:background .15s,color .15s;cursor:pointer}
.nav-item i{font-size:17px;width:20px;text-align:center}
.nav-item:hover{background:var(--sidebar-hover);color:#dbe4f0}
.nav-item.active{background:rgba(222,39,38,.14);color:#fff}
.nav-item.active::before{content:"";position:absolute;left:-10px;top:8px;bottom:8px;width:3px;background:var(--brand);border-radius:0 2px 2px 0}
.side-user{display:flex;align-items:center;gap:10px;padding:14px 18px;border-top:1px solid rgba(255,255,255,.08)}
.avatar{width:32px;height:32px;border-radius:50%;background:#334155;color:#cbd5e1;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600;flex-shrink:0}
.side-user .un{color:#e2e8f0;font-size:13px}
.side-user .ur{color:#7d8ba1;font-size:11px}
.side-user .logout{margin-left:auto;color:#7d8ba1;font-size:17px;padding:4px;border-radius:6px}
.side-user .logout:hover{color:#fff;background:var(--sidebar-hover)}

.main{flex:1;overflow-y:auto;display:flex;flex-direction:column}
.page-head{display:flex;align-items:flex-end;justify-content:space-between;padding:26px 32px 18px}
.page-head h1{font-size:22px;font-weight:600}
.page-head .sub{font-size:13px;color:var(--text-2);margin-top:4px}
.content{padding:0 32px 32px;max-width:1280px;width:100%;margin:0 auto}

/* ---------- toolbar ---------- */
.toolbar{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.search-box{position:relative;flex:1;min-width:220px;max-width:340px}
.search-box i{position:absolute;left:11px;top:50%;transform:translateY(-50%);color:var(--text-3);font-size:16px}
.search-box input{width:100%;height:38px;border:1px solid var(--border);border-radius:var(--radius);padding:0 12px 0 34px;background:#fafbfc}
.search-box input:focus{border-color:var(--brand);background:#fff}
.select{height:38px;border:1px solid var(--border);border-radius:var(--radius);padding:0 10px;background:#fafbfc;color:var(--text);min-width:120px}
.btn{height:38px;border-radius:var(--radius);padding:0 16px;font-size:13.5px;display:inline-flex;align-items:center;gap:6px;transition:all .15s;width:auto}
.btn i{font-size:15px}
.btn-primary{background:var(--brand);color:#fff;font-weight:500}
.btn-primary:hover{background:var(--brand-dark)}
.btn-ghost{background:#fff;border:1px solid var(--border);color:var(--text)}
.btn-ghost:hover{border-color:#c9cfd8;background:#fafbfc}
.toolbar .btn-primary{margin-left:auto}

/* ---------- table ---------- */
.table-wrap{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
table{width:100%;border-collapse:collapse}
thead th{text-align:left;font-size:12px;font-weight:500;color:var(--text-2);padding:12px 16px;background:#fafbfd;border-bottom:1px solid var(--border);white-space:nowrap}
tbody td{padding:13px 16px;border-bottom:1px solid #f0f2f5;font-size:13.5px;vertical-align:middle}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:#f8fafc}
.cat-tag{display:inline-block;font-size:12px;padding:2px 9px;border-radius:4px;background:#eef1f5;color:#5b6573}
.stage-tag{display:inline-block;font-size:12px;padding:2px 9px;border-radius:4px}
.stage-tag.洽谈中{background:#fdf2e6;color:#c2620a}
.stage-tag.合作中{background:#e8f6ef;color:#15803d}
.stage-tag.已结束{background:#eef1f5;color:#5b6573}
.row-actions{display:flex;gap:2px;justify-content:flex-end}
.act-btn{width:30px;height:30px;border-radius:6px;display:inline-flex;align-items:center;justify-content:center;color:var(--text-3);font-size:15px}
.act-btn:hover{background:#eef1f5;color:var(--text)}
.act-btn.danger:hover{background:#fdecec;color:var(--brand)}
.empty{padding:56px 0;text-align:center;color:var(--text-3)}
.empty i{font-size:34px;display:block;margin-bottom:10px;color:#c8cfd9}
.td-dim{color:var(--text-2)}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12.5px}

/* ---------- modal ---------- */
.modal-mask{position:fixed;inset:0;background:rgba(15,23,42,.45);display:none;align-items:flex-start;justify-content:center;z-index:100;overflow-y:auto;padding:60px 16px}
.modal-mask.show{display:flex}
.modal{background:#fff;border-radius:12px;width:620px;max-width:100%;box-shadow:0 20px 60px rgba(15,23,42,.2)}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid var(--border)}
.modal-head h3{font-size:16px;font-weight:600}
.modal-close{width:30px;height:30px;border-radius:6px;display:flex;align-items:center;justify-content:center;color:var(--text-3);font-size:16px}
.modal-close:hover{background:#f0f2f5;color:var(--text)}
.modal-body{padding:20px 22px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-grid .full{grid-column:1/-1}
.f-label{display:block;font-size:12.5px;color:var(--text-2);margin-bottom:5px}
.f-input{width:100%;height:38px;border:1px solid var(--border);border-radius:var(--radius);padding:0 11px;background:#fafbfc}
.f-input:focus{border-color:var(--brand);background:#fff}
textarea.f-input{height:auto;padding:9px 11px;resize:vertical;min-height:60px}
.modal-foot{display:flex;justify-content:flex-end;gap:10px;padding:16px 22px;border-top:1px solid var(--border)}
.btn-cancel{background:#fff;border:1px solid var(--border);color:var(--text)}
.btn-cancel:hover{background:#fafbfc}
.modal.small{width:400px}
.confirm-text{font-size:14px;color:var(--text);line-height:1.7}
.confirm-text b{color:var(--brand)}

/* ---------- sensitive ---------- */
.sensitive-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}
.sensitive-grid .s-item{padding:12px 0;border-bottom:1px solid #f0f2f5}
.sensitive-grid .s-item:last-child{border-bottom:none}
.s-item .s-label{font-size:12px;color:var(--text-3);margin-bottom:4px}
.s-item .s-value{font-size:14px;font-weight:500;word-break:break-all}
.sensitive-tip{display:flex;align-items:center;gap:6px;margin-top:14px;padding:10px 12px;background:#fdf1f1;color:#c41f1e;border-radius:6px;font-size:12.5px}

/* ---------- toast ---------- */
#toast{position:fixed;top:22px;left:50%;transform:translateX(-50%);background:#1e293b;color:#fff;padding:10px 20px;border-radius:8px;font-size:13.5px;z-index:200;opacity:0;pointer-events:none;transition:opacity .25s,transform .25s;box-shadow:0 8px 24px rgba(15,23,42,.25)}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
#toast.err{background:var(--brand)}

/* ---------- audit ---------- */
.audit-action{display:inline-block;font-size:12px;padding:2px 9px;border-radius:4px;font-weight:500}
.audit-action.login{background:#e8f6ef;color:#15803d}
.audit-action.create,.audit-action.create_user{background:#eaf1fb;color:#2b5fbf}
.audit-action.update,.audit-action.update_user{background:#fdf2e6;color:#c2620a}
.audit-action.delete{background:#fdecec;color:#c41f1e}
.audit-action.view_sensitive{background:#f5e8fd;color:#7e22ce}
.audit-action.logout,.audit-action.change_password{background:#eef1f5;color:#5b6573}

/* ---------- settings ---------- */
.settings-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px 28px;max-width:460px}
.settings-card h3{font-size:15px;font-weight:600;margin-bottom:6px}
.settings-card .hint{font-size:12.5px;color:var(--text-2);margin-bottom:18px}
.user-line{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.user-line .avatar{width:44px;height:44px;font-size:16px}

/* ---------- markdown 知识内容 ---------- */
.knowledge-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:32px 36px}
.markdown-body{line-height:1.85;font-size:14.5px;color:var(--text)}
.markdown-body h1{font-size:22px;font-weight:700;margin:0 0 16px;padding-bottom:12px;border-bottom:1px solid var(--border)}
.markdown-body h2{font-size:18px;font-weight:600;margin:28px 0 12px;padding-left:10px;border-left:3px solid var(--brand)}
.markdown-body h3{font-size:16px;font-weight:600;margin:22px 0 10px}
.markdown-body h4{font-size:14.5px;font-weight:600;margin:18px 0 8px}
.markdown-body p{margin:10px 0}
.markdown-body ul,.markdown-body ol{margin:10px 0;padding-left:24px}
.markdown-body li{margin:5px 0}
.markdown-body strong{color:#0f172a}
.markdown-body blockquote{margin:14px 0;padding:10px 16px;background:#f8fafc;border-left:3px solid #cbd5e1;color:var(--text-2);border-radius:0 6px 6px 0}
.markdown-body blockquote p{margin:0}
.markdown-body code{background:#f1f5f9;color:#c41f1e;padding:2px 6px;border-radius:4px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px}
.markdown-body table{width:100%;border-collapse:collapse;margin:16px 0;font-size:13.5px}
.markdown-body table th{background:#fafbfd;border:1px solid var(--border);padding:10px 14px;text-align:left;font-weight:600;color:var(--text-2)}
.markdown-body table td{border:1px solid var(--border);padding:10px 14px;vertical-align:top}
.markdown-body table tr:hover{background:#f8fafc}
.markdown-body hr{border:none;border-top:1px solid var(--border);margin:24px 0}
.markdown-body a{color:var(--brand);text-decoration:none}
.markdown-body a:hover{text-decoration:underline}

@media (max-width:1100px){.form-grid{grid-template-columns:1fr}.sensitive-grid{grid-template-columns:1fr}}