:root{
  --primary:#409eff;
  --primary-light:#ecf5ff;
  --success:#67c23a;
  --danger:#f56c6c;
  --warning:#e6a23c;
  --text:#303133;
  --text-2:#606266;
  --text-3:#909399;
  --border:#dcdfe6;
  --border-light:#ebeef5;
  --bg:#f5f7fa;
  --radius:8px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--text);background:var(--bg);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none}
img{max-width:100%}
button{font-family:inherit}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:32px;padding:0 15px;border-radius:4px;border:1px solid var(--border);
  background:#fff;color:var(--text-2);font-size:13px;cursor:pointer;
  transition:.2s;white-space:nowrap;user-select:none;
}
.btn:hover{color:var(--primary);border-color:#c6e2ff;background:var(--primary-light)}
.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn.primary:hover{background:#66b1ff;border-color:#66b1ff;color:#fff}
.btn.danger{background:var(--danger);border-color:var(--danger);color:#fff}
.btn.danger:hover{background:#f78989;border-color:#f78989;color:#fff}
.btn.plain-danger{color:var(--danger);border-color:#fbc4c4;background:#fef0f0}
.btn.plain-danger:hover{background:var(--danger);color:#fff;border-color:var(--danger)}
.btn.sm{height:26px;padding:0 9px;font-size:12px}
.btn.lg{height:40px;padding:0 22px;font-size:15px;border-radius:6px}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* ---------- form ---------- */
.input,.textarea,.select{
  width:100%;height:34px;padding:0 11px;border:1px solid var(--border);border-radius:4px;
  font-size:13px;color:var(--text);background:#fff;outline:none;transition:.2s;font-family:inherit;
}
.input:focus,.textarea:focus,.select:focus{border-color:var(--primary)}
.input::placeholder,.textarea::placeholder{color:#c0c4cc}
.textarea{height:auto;padding:8px 11px;resize:vertical;min-height:70px;line-height:1.6}
.select{appearance:none;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath fill='%23c0c4cc' d='M6 8L2 4h8z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;background-size:12px;padding-right:28px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:6px}
.field .req{color:var(--danger);margin-right:2px}
.hint{font-size:12px;color:var(--text-3);margin-top:5px}

/* ---------- table ---------- */
.table{width:100%;border-collapse:collapse;font-size:13px}
.table th{background:#fafafa;color:var(--text-2);font-weight:500;text-align:left;padding:10px 12px;border-bottom:1px solid var(--border-light);white-space:nowrap}
.table td{padding:11px 12px;border-bottom:1px solid var(--border-light);color:var(--text-2);vertical-align:middle}
.table tr:hover td{background:#fafafa}
.table .empty{text-align:center;color:var(--text-3);padding:40px 0}

/* ---------- dialog ---------- */
.mask{position:fixed;inset:0;background:rgba(0,0,0,.5);display:none;align-items:flex-start;justify-content:center;z-index:2000;overflow:auto;padding:60px 16px}
.mask.show{display:flex}
.dialog{background:#fff;border-radius:var(--radius);width:480px;max-width:100%;box-shadow:0 8px 30px rgba(0,0,0,.15);animation:pop .18s ease}
@keyframes pop{from{transform:translateY(-12px);opacity:.6}to{transform:none;opacity:1}}
.dialog-hd{display:flex;align-items:center;justify-content:space-between;padding:18px 20px 12px}
.dialog-hd h3{margin:0;font-size:16px;font-weight:600}
.dialog-hd .x{border:0;background:none;font-size:20px;color:var(--text-3);cursor:pointer;line-height:1;padding:0 2px}
.dialog-hd .x:hover{color:var(--primary)}
.dialog-bd{padding:6px 20px 8px;max-height:65vh;overflow:auto}
.dialog-ft{padding:12px 20px 18px;display:flex;justify-content:flex-end;gap:10px}
.dialog.sm{width:380px}

/* ---------- misc ---------- */
.card{background:#fff;border-radius:var(--radius);box-shadow:0 1px 4px rgba(0,0,0,.04)}
.tag{display:inline-block;padding:1px 7px;border-radius:3px;font-size:12px;line-height:18px;background:var(--primary-light);color:var(--primary)}
.tag.gray{background:#f4f4f5;color:#909399}
.tag.green{background:#f0f9eb;color:var(--success)}
.tag.red{background:#fef0f0;color:var(--danger)}
.muted{color:var(--text-3)}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.row{display:flex;gap:10px;align-items:center}
.grow{flex:1}
.toast{
  position:fixed;top:24px;left:50%;transform:translateX(-50%) translateY(-20px);
  background:#fff;border:1px solid var(--border-light);border-radius:6px;padding:11px 18px;font-size:13px;
  box-shadow:0 4px 16px rgba(0,0,0,.12);opacity:0;transition:.25s;z-index:4000;pointer-events:none;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.err{color:var(--danger);border-color:#fbc4c4}
.toast.ok{color:var(--success);border-color:#d9ecb8}