:root{--bg: #f5f6f8;--panel: #ffffff;--border: #e3e6ea;--border-strong: #cdd2d8;--text: #1f2329;--text-soft: #5a6068;--text-faint: #8a909a;--primary: #2b6cb0;--primary-hover: #245a93;--danger: #c0392b;--danger-hover: #a5301f;--warn: #b7791f;--ok: #2f855a;--shadow: 0 1px 3px rgba(0, 0, 0, .08);--shadow-lg: 0 12px 40px rgba(0, 0, 0, .18);--radius: 8px}*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,Roboto,Helvetica,Arial,sans-serif;font-size:14px;line-height:1.6;color:var(--text);background:var(--bg)}#app{min-height:100%}button{font:inherit;cursor:pointer;border:1px solid var(--border-strong);background:#fff;color:var(--text);padding:6px 14px;border-radius:6px;transition:background .12s,border-color .12s,opacity .12s}button:hover{background:#f2f4f7}button:disabled{opacity:.5;cursor:not-allowed}button.primary{background:var(--primary);border-color:var(--primary);color:#fff}button.primary:hover{background:var(--primary-hover);border-color:var(--primary-hover)}button.danger{background:#fff;border-color:var(--danger);color:var(--danger)}button.danger:hover{background:var(--danger);color:#fff}button.ghost{border-color:transparent;background:transparent;color:var(--primary);padding:4px 8px}button.ghost:hover{background:#eef3f9}button.small{padding:3px 9px;font-size:13px}input,select,textarea{font:inherit;color:var(--text);border:1px solid var(--border-strong);border-radius:6px;padding:7px 10px;background:#fff;width:100%}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px #2b6cb026}textarea{resize:vertical;min-height:64px}a{color:var(--primary)}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.login-card{width:100%;max-width:380px;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:32px 28px}.login-card h1{margin:0 0 4px;font-size:22px}.login-card .sub{margin:0 0 24px;color:var(--text-soft);font-size:13px}.login-card label{display:block;font-size:13px;color:var(--text-soft);margin-bottom:6px}.login-actions{margin-top:18px;display:flex;flex-direction:column;gap:10px}.login-actions .row{display:flex;gap:10px}.login-actions .row button{flex:1}.app-header{position:sticky;top:0;z-index:10;background:var(--panel);border-bottom:1px solid var(--border);box-shadow:var(--shadow)}.app-header .bar{max-width:1200px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}.brand{font-size:17px;font-weight:700;white-space:nowrap;margin-right:4px}.brand small{font-weight:400;color:var(--text-faint);margin-left:6px;font-size:12px}.toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;flex:1}.toolbar .grow{flex:1;min-width:160px}.toolbar select{width:auto;min-width:150px}.toolbar .search{flex:1;min-width:180px}.spacer{flex:1}.toggle{display:inline-flex;align-items:center;gap:6px;white-space:nowrap;color:var(--text-soft);font-size:13px}.toggle input{width:auto}.app-main{max-width:1200px;margin:0 auto;padding:20px}.banner{margin-bottom:14px;padding:10px 14px;border-radius:6px;font-size:13px}.banner.error{background:#fdecea;border:1px solid #f5c6c0;color:var(--danger)}.banner.info{background:#eaf2fb;border:1px solid #c6dbf2;color:var(--primary)}.table-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}table{width:100%;border-collapse:collapse}thead th{text-align:left;font-size:12px;font-weight:600;color:var(--text-soft);text-transform:uppercase;letter-spacing:.04em;padding:11px 14px;background:#fafbfc;border-bottom:1px solid var(--border);white-space:nowrap}tbody td{padding:11px 14px;border-bottom:1px solid var(--border);vertical-align:middle}tbody tr:last-child td{border-bottom:none}tbody tr:hover{background:#fafbfc}.cell-id{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;color:var(--text-soft);white-space:nowrap}.cell-title{max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.cell-cat{white-space:nowrap}.tag{display:inline-block;padding:1px 8px;border-radius:999px;background:#eef1f5;color:var(--text-soft);font-size:12px}.cell-num{text-align:center;color:var(--text-soft)}.cell-time{white-space:nowrap;color:var(--text-soft);font-size:13px}.row-actions{display:flex;gap:4px;white-space:nowrap;justify-content:flex-end}.deleted-row td{opacity:.7}.empty,.loading{padding:48px 20px;text-align:center;color:var(--text-faint)}.pager{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;border-top:1px solid var(--border);background:#fafbfc;flex-wrap:wrap}.pager .info{color:var(--text-soft);font-size:13px}.pager .nav{display:flex;align-items:center;gap:8px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#14181e80;display:flex;align-items:flex-start;justify-content:center;padding:40px 16px;z-index:100;overflow:auto}.modal{width:100%;max-width:680px;background:var(--panel);border-radius:10px;box-shadow:var(--shadow-lg);display:flex;flex-direction:column;max-height:calc(100vh - 80px)}.modal.wide{max-width:760px}.modal-head{display:flex;align-items:center;justify-content:space-between;padding:16px 22px;border-bottom:1px solid var(--border)}.modal-head h2{margin:0;font-size:17px}.modal-head .x{border:none;background:transparent;font-size:20px;line-height:1;color:var(--text-faint);padding:4px 8px}.modal-body{padding:20px 22px;overflow:auto}.modal-foot{display:flex;align-items:center;justify-content:flex-end;gap:10px;padding:14px 22px;border-top:1px solid var(--border)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1 / -1}.field label{font-size:13px;color:var(--text-soft)}.field label .req{color:var(--danger);margin-left:2px}.field .hint{font-size:12px;color:var(--text-faint)}.history-list{display:flex;flex-direction:column;gap:12px}.history-item{border:1px solid var(--border);border-radius:8px;padding:12px 14px}.history-item .top{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.badge{font-size:12px;padding:1px 8px;border-radius:4px;font-weight:600}.badge.create{background:#e6f4ea;color:var(--ok)}.badge.update{background:#eaf2fb;color:var(--primary)}.badge.delete{background:#fdecea;color:var(--danger)}.badge.restore{background:#fef3e0;color:var(--warn)}.history-item .meta{color:var(--text-faint);font-size:12px}.history-item .note{margin-top:6px;color:var(--text-soft);font-size:13px}.history-item .top .spacer{flex:1}