* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --primary: #2f6bff; --primary-deep: #1e50d8;
  --ink: #1b2433; --sub: #6e7a8c; --hint: #9aa4b5;
  --bg: #f4f6fb; --card: #fff; --line: #e8ecf5;
  --ok: #1fbf6c; --danger: #e5484d; --warn: #f5a524;
}
body { font-family: 'MiSans', 'PingFang SC', 'Microsoft YaHei', sans-serif; background: var(--bg); color: var(--ink); font-size: 14px; }
.hidden { display: none !important; }

/* 登录 */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #eef3ff 0%, #f9fbff 60%, #eefaf5 100%); }
.login-card { width: 360px; background: var(--card); border-radius: 20px; padding: 40px 34px;
  box-shadow: 0 18px 50px rgba(31,60,120,.10); }
.login-logo { width: 52px; height: 52px; border-radius: 14px; color: #fff; font-weight: 700; font-size: 20px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep)); margin-bottom: 14px; }
.login-card h1 { font-size: 20px; }
.login-sub { color: var(--sub); margin: 6px 0 22px; font-size: 13px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 12px; color: var(--sub); margin-bottom: 6px; }
.field input { width: 100%; padding: 11px 14px; border: 1px solid var(--line); border-radius: 12px; font-size: 14px; outline: none; }
.field input:focus { border-color: var(--primary); }
.login-err { color: var(--danger); font-size: 12px; min-height: 18px; margin-bottom: 6px; }

/* 布局 */
.layout { display: flex; min-height: 100vh; }
.sidebar { width: 210px; background: var(--card); border-right: 1px solid var(--line);
  display: flex; flex-direction: column; padding: 18px 12px; position: sticky; top: 0; height: 100vh; }
.side-brand { font-weight: 700; font-size: 17px; padding: 4px 10px 18px; display: flex; align-items: center; gap: 8px; }
.brand-dot { width: 10px; height: 10px; border-radius: 3px; background: linear-gradient(135deg, var(--primary), var(--primary-deep)); }
#nav { flex: 1; }
#nav a { display: block; padding: 10px 12px; border-radius: 10px; color: var(--sub); cursor: pointer; margin-bottom: 2px; }
#nav a:hover { background: #f2f6ff; color: var(--ink); }
#nav a.on { background: linear-gradient(135deg, var(--primary), var(--primary-deep)); color: #fff; font-weight: 600; }
.side-foot { padding: 10px; }

.content { flex: 1; padding: 26px 30px; max-width: 1200px; }
.page-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.page-head h2 { font-size: 19px; }

/* 卡片与表格 */
.card { background: var(--card); border-radius: 16px; padding: 20px; box-shadow: 0 4px 18px rgba(31,60,120,.06); margin-bottom: 18px; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; margin-bottom: 18px; }
.stat { background: var(--card); border-radius: 16px; padding: 18px; box-shadow: 0 4px 18px rgba(31,60,120,.06); }
.stat .num { font-size: 24px; font-weight: 700; margin: 4px 0; }
.stat .lbl { color: var(--sub); font-size: 12px; }
.stat.hl { background: linear-gradient(135deg, var(--primary), var(--primary-deep)); color: #fff; }
.stat.hl .lbl { color: rgba(255,255,255,.75); }

table { width: 100%; border-collapse: collapse; }
th { text-align: left; font-size: 12px; color: var(--sub); font-weight: 500; padding: 8px 10px; border-bottom: 1px solid var(--line); }
td { padding: 10px; border-bottom: 1px solid var(--line); font-size: 13px; vertical-align: middle; }
tr:hover td { background: #f8faff; }

/* 按钮/标签/表单 */
.btn { border: none; border-radius: 10px; padding: 9px 16px; font-size: 13px; cursor: pointer; background: #eef2fa; color: var(--ink); }
.btn.primary { background: linear-gradient(135deg, var(--primary), var(--primary-deep)); color: #fff; font-weight: 600; }
.btn.danger { background: #fdeeee; color: var(--danger); }
.btn.ghost { background: transparent; border: 1px solid var(--line); }
.btn.small { padding: 6px 12px; font-size: 12px; }
.btn.block { width: 100%; padding: 12px; font-size: 15px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.tag { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; }
.tag.ok { background: #e6f8ef; color: var(--ok); }
.tag.off { background: #f1f3f8; color: var(--hint); }
.tag.warn { background: #fff5e5; color: var(--warn); }
.tag.info { background: #eaf1ff; color: var(--primary); }

.toolbar { display: flex; gap: 10px; margin-bottom: 14px; align-items: center; flex-wrap: wrap; }
.toolbar input, .toolbar select { padding: 9px 12px; border: 1px solid var(--line); border-radius: 10px; font-size: 13px; outline: none; }
.toolbar input:focus, .toolbar select:focus { border-color: var(--primary); }
.toolbar .grow { flex: 1; }

/* 弹窗 */
.mask { position: fixed; inset: 0; background: rgba(20,30,55,.45); display: flex; align-items: center; justify-content: center; z-index: 50; }
.modal { width: 460px; max-height: 86vh; overflow: auto; background: #fff; border-radius: 18px; padding: 24px; }
.modal h3 { margin-bottom: 16px; }
.modal .actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 18px; }
.empty { color: var(--hint); text-align: center; padding: 40px 0; }
.muted { color: var(--sub); font-size: 12px; }
.kv { display: grid; grid-template-columns: 110px 1fr; gap: 8px 12px; font-size: 13px; margin-bottom: 8px; }
.kv b { color: var(--sub); font-weight: 500; }
.pager { display: flex; gap: 8px; align-items: center; justify-content: flex-end; margin-top: 14px; color: var(--sub); font-size: 12px; }
.bar-chart { display: flex; align-items: flex-end; gap: 10px; height: 140px; padding: 10px 4px 0; }
.bar-chart .bar { flex: 1; background: linear-gradient(180deg, var(--primary), var(--primary-deep)); border-radius: 6px 6px 0 0; min-height: 2px; position: relative; }
.bar-chart .bar span { position: absolute; bottom: -20px; left: 50%; transform: translateX(-50%); font-size: 11px; color: var(--hint); white-space: nowrap; }
.section-title { font-size: 15px; font-weight: 600; margin: 6px 0 12px; }