* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  background: #f5f6f8; color: #1f2329; }
header { background: #1f2329; color: #fff; padding: 0 20px; display: flex;
  align-items: center; gap: 20px; height: 52px; }
header .brand { font-weight: 600; }
header nav { display: flex; gap: 16px; }
header nav a { color: #c9cdd4; text-decoration: none; font-size: 14px; }
header nav a:hover, header nav a.active { color: #fff; }
header .spacer { flex: 1; }
header .user { color: #c9cdd4; font-size: 13px; }
header .user a { color: #ff9d8a; margin-left: 10px; text-decoration: none; }
.container { max-width: 1080px; margin: 24px auto; padding: 0 20px; }
.container.wide { max-width: 1760px; }
.card { background: #fff; border-radius: 10px; padding: 20px 24px; margin-bottom: 20px;
  box-shadow: 0 1px 3px rgba(0,0,0,.06); }
h2 { margin: 0 0 16px; font-size: 18px; }
h3 { margin: 20px 0 10px; font-size: 15px; color: #4e5969; }
label { display: block; font-size: 13px; color: #4e5969; margin-bottom: 4px; }
input, select { width: 100%; padding: 8px 10px; border: 1px solid #dcdfe6; border-radius: 6px;
  font-size: 14px; background: #fff; }
input:focus, select:focus { outline: none; border-color: #3370ff; }
input[readonly] { background: #f2f3f5; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.grid .full { grid-column: 1 / -1; }
.btn { display: inline-block; background: #3370ff; color: #fff; border: none; padding: 9px 18px;
  border-radius: 6px; font-size: 14px; cursor: pointer; text-decoration: none; }
.btn:hover { background: #245bdb; }
.btn.gray { background: #e5e6eb; color: #1f2329; }
.btn.gray:hover { background: #d5d7dd; }
.btn.sm { padding: 5px 12px; font-size: 13px; }
.row-actions { display: flex; gap: 16px; align-items: center; margin-top: 18px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 8px 10px; border-bottom: 1px solid #eef0f3; text-align: right; white-space: nowrap; }
th:first-child, td:first-child, th:nth-child(2), td:nth-child(2),
th:nth-child(3), td:nth-child(3) { text-align: left; }
thead th { background: #fafbfc; color: #4e5969; font-weight: 600; position: sticky; top: 0; }
.table-wrap { overflow-x: auto; }
.msg { background: #e8f3ff; color: #1d5fd6; padding: 10px 14px; border-radius: 6px;
  margin-bottom: 16px; font-size: 14px; }
.filters { display: flex; gap: 12px; align-items: end; flex-wrap: wrap; margin-bottom: 16px; }
.filters > div { min-width: 150px; }
.preview { background: #f2f3f5; border-radius: 6px; padding: 12px 16px; font-size: 14px;
  display: flex; gap: 30px; }
.preview b { color: #1f2329; }
.pos { color: #d4380d; } .neg { color: #389e0d; }
/* 表格录入网格 */
.grid-table td, .grid-table th { padding: 5px 6px; }
.grid-table input, .grid-table select { padding: 5px 6px; font-size: 13px; }
.grid-table .f-date { width: 130px; }
.grid-table select { width: 92px; }
.grid-table input[type=number] { width: 78px; text-align: right; }
.grid-table .c-profit, .grid-table .c-perf { font-weight: 600; min-width: 72px; }
.status { font-size: 12px; margin-left: 4px; }
.status.ok { color: #389e0d; }
.status.warn { color: #d4380d; }
.login-box { max-width: 340px; margin: 12vh auto; }
.err { color: #d4380d; font-size: 13px; margin-bottom: 12px; }
@media (max-width: 720px) { .grid { grid-template-columns: 1fr 1fr; } }