:root {
  --primary: #1f5fbf;
  --primary-dark: #174a96;
  --bg: #f4f6fa;
  --panel: #ffffff;
  --border: #e3e8f0;
  --text: #1f2a3a;
  --muted: #7a869a;
  --green: #1a9d5a;
  --red: #d8453a;
  --shadow: 0 1px 3px rgba(20, 40, 80, 0.08);
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: -apple-system, "PingFang SC", "Microsoft YaHei", Segoe UI, sans-serif;
  background: var(--bg); color: var(--text); font-size: 14px;
}
a { color: var(--primary); text-decoration: none; }

/* 登录 */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #1f5fbf 0%, #2b7de0 100%); }
.login-card { background: #fff; padding: 38px 34px; border-radius: 14px; width: 360px;
  box-shadow: 0 12px 40px rgba(0,0,0,.25); }
.login-card h1 { font-size: 20px; margin: 0 0 4px; color: var(--primary); }
.login-card .sub { color: var(--muted); margin-bottom: 22px; font-size: 13px; }
.login-card input { width: 100%; padding: 11px 12px; margin-bottom: 14px; border: 1px solid var(--border);
  border-radius: 8px; font-size: 14px; }
.login-card button { width: 100%; padding: 11px; background: var(--primary); color: #fff; border: none;
  border-radius: 8px; font-size: 15px; cursor: pointer; }
.login-card button:hover { background: var(--primary-dark); }
.login-hint { margin-top: 14px; font-size: 12px; color: var(--muted); text-align: center; }

/* 布局 */
.app { display: flex; min-height: 100vh; }
.sidebar { width: 210px; background: #16243b; color: #cdd6e4; padding: 18px 0; flex-shrink: 0; }
.sidebar .brand { color: #fff; font-size: 16px; font-weight: 700; padding: 0 18px 16px; border-bottom: 1px solid #26344d; }
.sidebar .nav-item { padding: 11px 18px; cursor: pointer; font-size: 14px; border-left: 3px solid transparent; }
.sidebar .nav-item:hover { background: #1f2f4a; }
.sidebar .nav-item.active { background: #1f2f4a; border-left-color: var(--primary); color: #fff; }
.main { flex: 1; display: flex; flex-direction: column; }
.topbar { height: 56px; background: var(--panel); border-bottom: 1px solid var(--border);
  display: flex; align-items: center; padding: 0 20px; gap: 14px; box-shadow: var(--shadow); }
.topbar select { padding: 7px 10px; border: 1px solid var(--border); border-radius: 7px; min-width: 240px; }
.topbar .spacer { flex: 1; }
.topbar .user { color: var(--muted); font-size: 13px; }
.topbar button.link { background: none; border: none; color: var(--primary); cursor: pointer; font-size: 13px; }
.content { padding: 22px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 10px;
  padding: 18px; box-shadow: var(--shadow); margin-bottom: 18px; }
.card h2 { font-size: 16px; margin: 0 0 14px; }
.card h3 { font-size: 14px; margin: 0 0 10px; color: var(--muted); }

/* 表格 */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { border: 1px solid var(--border); padding: 8px 10px; text-align: left; }
th { background: #f7f9fc; color: #46546b; font-weight: 600; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tr:hover td { background: #fafcff; }
.tag { display: inline-block; padding: 1px 8px; border-radius: 10px; font-size: 12px; }
.tag.draft { background: #fff3e0; color: #c77700; }
.tag.audited { background: #e6f0ff; color: #1f5fbf; }
.tag.posted { background: #e6f7ee; color: #1a9d5a; }
.tag.voided { background: #f0f0f0; color: #888; }

/* 表单 */
input, select, textarea { font-family: inherit; }
.field { margin-bottom: 12px; }
.field label { display: block; margin-bottom: 5px; color: var(--muted); font-size: 13px; }
.field input, .field select { width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 7px; }
.row { display: flex; gap: 12px; }
.row > * { flex: 1; }
.btn { padding: 8px 16px; border: 1px solid var(--primary); background: var(--primary); color: #fff;
  border-radius: 7px; cursor: pointer; font-size: 13px; }
.btn:hover { background: var(--primary-dark); }
.btn.secondary { background: #fff; color: var(--primary); }
.btn.danger { background: #fff; color: var(--red); border-color: var(--red); }
.btn.sm { padding: 5px 10px; font-size: 12px; }
.toolbar { display: flex; gap: 10px; align-items: center; margin-bottom: 14px; flex-wrap: wrap; }
.toolbar .spacer { flex: 1; }
.msg { padding: 9px 12px; border-radius: 7px; margin-bottom: 12px; font-size: 13px; }
.msg.err { background: #fdecea; color: var(--red); }
.msg.ok { background: #e6f7ee; color: var(--green); }

/* 模态框 */
.modal-mask { position: fixed; inset: 0; background: rgba(20,30,50,.45); display: flex;
  align-items: flex-start; justify-content: center; padding: 40px 16px; z-index: 50; overflow: auto; }
.modal { background: #fff; border-radius: 12px; width: 880px; max-width: 100%; padding: 22px; box-shadow: 0 20px 60px rgba(0,0,0,.3); }
.modal h2 { margin-top: 0; }
.entry-table input { padding: 5px 7px; width: 100%; border: 1px solid var(--border); border-radius: 5px; }
.muted { color: var(--muted); }
.right { text-align: right; }
.kpi { display: flex; gap: 16px; flex-wrap: wrap; }
.kpi .box { background: #f7f9fc; border: 1px solid var(--border); border-radius: 10px; padding: 16px 20px; min-width: 150px; }
.kpi .box .v { font-size: 22px; font-weight: 700; color: var(--primary); }
.kpi .box .l { color: var(--muted); font-size: 13px; margin-top: 4px; }
.pill { background:#eef3fb; color:var(--primary); padding:2px 8px; border-radius: 6px; font-size:12px; }

/* 资产负债表双栏 */
.bs-grid { display: flex; gap: 24px; flex-wrap: wrap; }
.bs-col { flex: 1; min-width: 320px; border-collapse: collapse; }
.bs-col th, .bs-col td { padding: 8px 10px; border-bottom: 1px solid var(--border); font-size: 13px; }
.bs-col th { background: #f7f9fc; text-align: left; color: var(--muted); }
.bs-col tr.tot td { font-weight: 700; background: #f7f9fc; border-top: 2px solid #dde4ee; }