:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --line: #e6e8ec;
  --text: #1f2329;
  --muted: #7a8189;
  --brand: #2f6fed;
  --brand-soft: #eaf1ff;
  --ok: #12a150;
  --ok-soft: #e7f7ee;
  --warn: #c47f17;
  --warn-soft: #fdf3e2;
  --danger: #d9453d;
  --danger-soft: #fdeceb;
  --radius: 10px;
  --sidebar: #1f2430;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.6 -apple-system, "Segoe UI", "Microsoft YaHei", "PingFang SC", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------------- 布局 ---------------- */
.shell { display: flex; min-height: 100vh; }

.sidebar {
  width: 220px; flex: 0 0 220px; background: var(--sidebar); color: #c9cfda;
  display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh;
}
.sidebar .brand {
  padding: 18px 18px 14px; font-weight: 700; font-size: 15px; color: #fff;
  letter-spacing: .5px; border-bottom: 1px solid rgba(255,255,255,.08);
}
.sidebar .brand small { display: block; font-weight: 400; font-size: 11px; color: #8b93a3; margin-top: 4px; letter-spacing: 0; }
.sidebar nav { padding: 10px 8px; overflow-y: auto; flex: 1; }
.sidebar nav a {
  display: block; padding: 8px 12px; border-radius: 8px; color: #c9cfda;
  font-size: 13.5px; margin-bottom: 2px; white-space: nowrap;
}
.sidebar nav a:hover { background: rgba(255,255,255,.07); text-decoration: none; color: #fff; }
.sidebar nav a.active { background: var(--brand); color: #fff; font-weight: 600; }

/* ---- 分组文件夹 ---- */
/* 单页栏目（group=None，如「总览」）：不折文件夹，直接铺第一层 */
.sidebar nav .nav-single {
  display: block; padding: 8px 10px; border-radius: 8px; margin-bottom: 6px;
  font-size: 13px; color: #c8cdd8; text-decoration: none; white-space: nowrap;
}
.sidebar nav .nav-single:hover { background: rgba(255,255,255,.07); text-decoration: none; color: #fff; }
.sidebar nav .nav-single.active { background: var(--brand); color: #fff; font-weight: 600; }
.sidebar nav .navgroup { margin-bottom: 4px; }
.sidebar nav summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; gap: 7px;
  padding: 7px 10px; border-radius: 8px; font-size: 11.5px; font-weight: 700;
  color: #79808f; letter-spacing: .8px; user-select: none;
}
.sidebar nav summary::-webkit-details-marker { display: none; }
.sidebar nav summary:hover { color: #dfe4ec; background: rgba(255,255,255,.05); }
.sidebar nav .navgroup[open] > summary { color: #a7b0c1; }
.sidebar nav .g-ico { font-size: 13px; filter: grayscale(.25); }
.sidebar nav .chev { margin-left: auto; font-size: 10px; color: #656d7e; transition: transform .16s ease; }
.sidebar nav .navgroup[open] > summary .chev { transform: rotate(90deg); color: #8f97a8; }
.sidebar nav .g-items { padding: 2px 0 6px 7px; margin: 0 0 2px 5px; border-left: 1px solid rgba(255,255,255,.07); }
.sidebar nav .g-items a { padding: 7px 10px; font-size: 13px; }
.sidebar .who {
  padding: 12px 16px; border-top: 1px solid rgba(255,255,255,.08); font-size: 12.5px; color: #8b93a3;
}
.sidebar .who b { color: #fff; display: block; font-size: 13px; margin-bottom: 4px; }
.sidebar .who a { color: #8b93a3; }
.sidebar .who a:hover { color: #fff; }

.main { flex: 1; min-width: 0; padding: 22px 26px 60px; }
.page-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 4px; }
.page-head h1 { font-size: 20px; margin: 0; }
.page-head .sub { color: var(--muted); font-size: 12.5px; }
.hint { color: var(--muted); font-size: 12.5px; margin: 6px 0 16px; }

/* ---------------- 必填 / 可选 标记 ---------------- */
.req, .opt {
  display: inline-block; margin-left: 6px; padding: 0 6px; border-radius: 20px;
  font-size: 11px; line-height: 16px; font-weight: 400; vertical-align: 1px;
}
.req { background: var(--danger-soft); color: var(--danger); }
.opt { background: var(--line); color: var(--muted); }

/* ---------------- 卡片 / 栅格 ---------------- */
.grid { display: grid; gap: 14px; }
.g2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.g3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.g4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
.g5 { grid-template-columns: repeat(5, minmax(0,1fr)); }
@media (max-width: 1100px) { .g4,.g5 { grid-template-columns: repeat(2, minmax(0,1fr)); } }

.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 18px; margin-bottom: 16px;
}
.card h3 { margin: 0 0 12px; font-size: 14.5px; }
.card h3 .tag { font-weight: 400; color: var(--muted); font-size: 12px; margin-left: 6px; }

.kpi { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; }
.kpi .k { color: var(--muted); font-size: 12.5px; }
.kpi .v { font-size: 24px; font-weight: 700; margin-top: 4px; font-variant-numeric: tabular-nums; }
.kpi .v.small { font-size: 18px; }
.kpi .n { font-size: 11.5px; color: var(--muted); margin-top: 2px; }

/* ---------------- 表格 ---------------- */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 8px 10px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { color: var(--muted); font-weight: 600; background: #fafbfc; font-size: 12.5px; white-space: nowrap; }
tbody tr:hover { background: #fafbfd; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
td.mono { font-family: ui-monospace, Consolas, monospace; font-size: 12px; }
.wrap { overflow-x: auto; }

/* ---------------- 徽标 / 状态 ---------------- */
.badge {
  display: inline-block; padding: 1px 8px; border-radius: 20px; font-size: 12px;
  line-height: 18px; white-space: nowrap;
}
.b-ok { background: var(--ok-soft); color: var(--ok); }
.b-warn { background: var(--warn-soft); color: var(--warn); }
.b-danger { background: var(--danger-soft); color: var(--danger); }
.b-info { background: var(--brand-soft); color: var(--brand); }
.b-mute { background: #f0f1f3; color: var(--muted); }

/* ---------------- 按钮 / 表单 ---------------- */
.btn {
  display: inline-block; padding: 6px 14px; border-radius: 8px; border: 1px solid var(--line);
  background: #fff; color: var(--text); cursor: pointer; font-size: 13px; line-height: 1.5;
}
.btn:hover { background: #f7f8fa; text-decoration: none; }
.btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn.primary:hover { background: #2560d8; }
.btn.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn.danger:hover { background: #c23b34; }
.btn.sm { padding: 3px 9px; font-size: 12px; border-radius: 6px; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

input[type=text], input[type=password], input[type=number], input[type=file], select, textarea {
  padding: 7px 10px; border: 1px solid var(--line); border-radius: 8px; font-size: 13px;
  font-family: inherit; background: #fff; color: var(--text); max-width: 100%;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--brand-soft); border-color: var(--brand); }
label.field { display: block; margin-bottom: 10px; font-size: 12.5px; color: var(--muted); }
label.field input, label.field select { display: block; margin-top: 4px; width: 100%; }
.row-form { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; }
.row-form label.field { margin-bottom: 0; }

.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 12px; font-size: 13px; }
.flash.ok { background: var(--ok-soft); color: #0b6b35; }
.flash.error { background: var(--danger-soft); color: #96241f; }

.note { background: #fafbfc; border-left: 3px solid var(--brand); padding: 10px 14px;
  border-radius: 6px; color: #4a5158; font-size: 12.5px; margin: 10px 0; }
.note.warn { border-left-color: var(--warn); background: var(--warn-soft); }
.note.ok { border-left-color: var(--ok); background: var(--ok-soft); }
.note.danger { border-left-color: var(--danger); background: var(--danger-soft); }

.pager { margin-top: 12px; display: flex; gap: 8px; align-items: center; color: var(--muted); font-size: 12.5px; }
.empty { padding: 30px; text-align: center; color: var(--muted); font-size: 13px; }
code { background: #f2f3f5; padding: 1px 5px; border-radius: 4px; font-size: 12px;
  font-family: ui-monospace, Consolas, monospace; }

/* ---------------- 登录页 ---------------- */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(160deg,#eef3ff 0%, #f7f8fa 45%, #eef7f2 100%); padding: 20px; }
.login-card { width: 400px; background: #fff; border-radius: 16px; padding: 32px 34px;
  box-shadow: 0 12px 40px rgba(31,35,41,.10); }
.login-card h1 { font-size: 21px; margin: 0 0 4px; }
.login-card .sub { color: var(--muted); font-size: 12.5px; margin-bottom: 22px; }
.tabs { display: flex; gap: 6px; background: #f2f3f5; padding: 4px; border-radius: 10px; margin-bottom: 18px; }
.tabs a { flex: 1; text-align: center; padding: 7px; border-radius: 7px; font-size: 13px;
  color: var(--muted); }
.tabs a:hover { text-decoration: none; color: var(--text); }
.tabs a.on { background: #fff; color: var(--brand); font-weight: 600; box-shadow: 0 1px 3px rgba(0,0,0,.06); }
.login-card .btn.primary { width: 100%; padding: 9px; font-size: 14px; margin-top: 6px; }
.login-foot { margin-top: 18px; font-size: 12px; color: var(--muted); line-height: 1.9; }

/* 进度条 */
.bar { height: 8px; background: #eef0f3; border-radius: 6px; overflow: hidden; margin: 8px 0; }
.bar > i { display: block; height: 100%; background: var(--brand); width: 0; transition: width .3s; }

.pill-row { display: flex; flex-wrap: wrap; gap: 6px; }
.chk-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 5px 12px; font-size: 12.5px; }
.chk-grid label { display: flex; gap: 6px; align-items: center; white-space: nowrap; }
.chk-grid label .badge { font-size: 10px; padding: 1px 5px; }

/* 栏目权限页：按文件夹分块 */
.perm-block { margin-bottom: 12px; }
.perm-head {
  font-size: 11.5px; font-weight: 700; color: var(--muted, #8b93a3);
  letter-spacing: .6px; margin: 0 0 6px; padding-bottom: 4px;
  border-bottom: 1px dashed #e6e8ec;
}