:root {
    --bg: #f5f6f8;
    --card: #fff;
    --line: #e4e7ec;
    --text: #1f2937;
    --muted: #5b6573; /* H2 对比度:最小对比灰 #767676,勿再调浅(WCAG AA 4.5:1) */
    --primary: #2563eb;
    --danger: #dc2626;
}
* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
}
.muted { color: var(--muted); }

/* 顶栏 */
.topbar {
    display: flex; align-items: center; gap: 24px;
    background: var(--card); border-bottom: 1px solid var(--line);
    padding: 12px 24px;
}
.brand { font-weight: 700; font-size: 16px; }
.nav { display: flex; gap: 16px; flex: 1; }
.nav a { color: var(--primary); text-decoration: none; }
.logout { display: flex; align-items: center; gap: 10px; margin: 0; }
.btn-link {
    background: none; border: none; color: var(--danger);
    cursor: pointer; font-size: 14px; padding: 0;
}

/* 布局 */
.wrap { max-width: 1360px; margin: 24px auto; padding: 0 24px; }
.wrap.center { display: flex; justify-content: center; align-items: center; min-height: 80vh; }

/* 宽表格横向滚动容器(超视口时滚动,不撑破卡片) */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
/* 宽表设最小宽度:超容器即整表横向滚,而不是把字逐字折成竖排 */
.table-scroll > .table { min-width: 1000px; }
.table-scroll .mono { white-space: nowrap; }        /* 时间 / IP 等宽列不折行 */
.col-ref { white-space: nowrap; max-width: 220px; overflow: hidden; text-overflow: ellipsis; }

/* 小屏兜底:顶栏换行不挤、内容边距收窄(表格横向滚由 .table-scroll 覆盖) */
@media (max-width: 720px) {
    .topbar { flex-wrap: wrap; gap: 12px; }
    .wrap { padding: 0 12px; }
}

/* 卡片 */
.card {
    background: #fff; border: 1px solid #e4e7ec;
    border-radius: 12px; padding: 16px 20px; margin-bottom: 16px;
}
.card h1 { margin: 0 0 12px; font-size: 18px; }
.center-text { text-align: center; }

/* 登录 */
.login-card { width: 320px; }
.login-card label { display: block; margin: 14px 0; }
.login-card input {
    display: block; width: 100%; margin-top: 6px;
    padding: 9px 10px; border: 1px solid var(--line); border-radius: 6px;
    font-size: 14px;
}
.btn {
    width: 100%; padding: 10px; margin-top: 8px;
    background: var(--primary); color: #fff; border: none;
    border-radius: 6px; font-size: 15px; cursor: pointer;
}
.alert {
    background: #fee2e2; color: var(--danger);
    border-radius: 6px; padding: 9px 12px; margin-bottom: 6px;
}
.todo { color: var(--muted); line-height: 1.9; }

/* 卡片头部(标题 + 右侧按钮) */
.card-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.card-head h1 { margin: 0; }
.btn-inline { width: auto; display: inline-block; padding: 8px 16px; text-decoration: none; }
a.btn { color: #fff; }
/* M7 底座:小号行内按钮(替换裸全宽蓝条 .btn 用于行内/表格场景);与 .btn 叠加用 */
.btn-sm { width: auto; display: inline-block; padding: 5px 12px; font-size: 13px; }
/* M7 底座:破坏性弱样式(移除/删除等)——白底、灰边、红字,非主色全宽 */
.btn-ghost { background: #fff; border: 1px solid var(--line); color: var(--danger); }

/* 表格 */
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
/* H2 对比度:#6b7280(最小对比灰 #767676,勿再调浅,WCAG AA 4.5:1) */
.table thead th { color:#6b7280; font-size:12.5px; font-weight:500; text-align:left; padding:8px; border-bottom:1px solid #eef1f5; }
.table tbody td { padding:9px 8px; border-bottom:1px solid #f3f5f8; font-variant-numeric:tabular-nums; }
.table tbody tr:nth-child(even) { background:#fafbfc; }
.table tbody tr:hover { background:#f3f7fd; }
.table td.num, .table th.num { text-align: right; }
.mono { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12px; }
.ops { display: flex; gap: 12px; align-items: center; }
.ops a { color: var(--primary); text-decoration: none; }
.ops form { margin: 0; }
.danger { color: var(--danger); }
.req { color: var(--danger); }

/* 表单 */
.form-card { max-width: 480px; }
.form-card label { display: block; margin: 14px 0; }
.form-card input {
    display: block; width: 100%; margin-top: 6px;
    padding: 9px 10px; border: 1px solid var(--line); border-radius: 6px; font-size: 14px;
}
.form-actions { display: flex; align-items: center; gap: 16px; margin-top: 18px; }

/* 统计卡片 */
.cards { display: flex; gap: 16px; margin-bottom: 16px; flex-wrap: wrap; }
.stat-card {
    flex: 1; min-width: 160px; background: var(--card);
    border: 1px solid var(--line); border-radius: 10px; padding: 18px 20px;
}
.stat-num { font-size: 28px; font-weight: 700; }
.stat-label { color: var(--muted); margin-top: 4px; }
.approx {
    font-size: 12px; font-weight: 400; color: #b45309;
    background: #fef3c7; border-radius: 4px; padding: 1px 6px; vertical-align: middle;
}
/* 来源质量跳出率着色(批次8-A;8-B 钻取概览复用,故不限定在 .table 内):高跳出红/低跳出绿 */
.bounce.bad  { color: #dc2626; font-weight: 600; }
.bounce.good { color: #16a34a; font-weight: 600; }
/* 来源标记强调(批次12:在线/日志来源列,配 from 的站真来路)*/
.src-tag { color: #2563eb; font-weight: 600; }

/* 迷你 sparkline(纯 CSS,无 JS) */
.spark { display: inline-flex; align-items: flex-end; gap: 2px; height: 28px; }
.spark i { display: inline-block; width: 6px; min-height: 1px; background: var(--primary); border-radius: 1px; }

/* 图表容器 */
.card h2 { font-size: 15px; margin: 0 0 12px; }
.chart { width: 100%; height: 300px; }
.chart-tall { height: 320px; }

/* 单站子导航(下划线 tab) */
.subnav { display:flex; gap:6px; flex-wrap:wrap; align-items:center;
  border-bottom:1px solid #eef1f5; padding-bottom:0; margin-bottom:16px; font-size:13.5px; }
.subnav-site { font-weight:700; margin-right:8px; }
.subnav a { color:#6b7280; text-decoration:none; padding:6px 8px 12px; }
.subnav a.on { color:#2563eb; font-weight:500; border-bottom:2px solid #2563eb; }
.subnav a:hover { color:#2563eb; }
.nav-badge { display:inline-block; min-width:16px; padding:0 5px; margin-left:4px;
  font-size:12px; line-height:16px; text-align:center; color:#fff;
  background:var(--danger); border-radius:9px; vertical-align:1px; }
/* H1(批次15-1c):长尾合并行钉表尾——底色弱化、不画占比条 */
.table tfoot .tail-row td { background:#fbfbfc; color:var(--muted); border-top:2px solid #eef1f5; }
/* M6:说明折叠(原生 details,零 JS)*/
.hint-details summary { cursor:pointer; display:inline-block; margin-bottom:4px; font-size:13px; }
.hint-details > p { margin-top:0; }
/* 子导航分组(批次15-1b 方案A:可见小标题横排;每组小标题 + 其 tab 一簇,组间留白)*/
.subnav-group { display:inline-flex; align-items:flex-end; gap:2px; margin-right:14px; }
.subnav-group-label { color:var(--muted); font-size:11px; font-weight:600;
  white-space:nowrap; padding-bottom:12px; margin-right:2px; }

/* 区间切换(分段药丸) */
.range-switch { display:inline-flex; gap:4px; background:#f3f5f8; padding:3px; border-radius:9px; }
.range-switch a { color:#6b7280; text-decoration:none; padding:4px 12px; border-radius:7px; font-size:13px; }
.range-switch a.on { background:#2563eb; color:#fff; }

/* 内联图标(浏览器/系统 SVG;国旗 emoji 直接是文字) */
.ico { vertical-align: -3px; margin-right: 5px; }

/* 长文本截断:inline-block 限宽 + 省略号,hover(title)看全文;不撑破表格/视口 */
.ellip {
    display: inline-block; max-width: 360px; overflow: hidden;
    text-overflow: ellipsis; white-space: nowrap; vertical-align: bottom;
}
.nowrap { white-space: nowrap; }
.table { table-layout: auto; }
.table td { word-break: break-word; }

/* 维度报表搜索框 */
.dim-search { display: flex; gap: 8px; align-items: center; margin: 10px 0 4px; flex-wrap: wrap; }
.dim-search input[type=text] { padding: 6px 10px; border: 1px solid var(--line); border-radius: 6px; min-width: 220px; }

/* 控件行(日期范围 + 搜索)胶囊化 */
.controls { display:flex; gap:8px; margin:12px 0 16px; flex-wrap:wrap; align-items:center; }
.controls .date-range { display:flex; gap:6px; align-items:center; margin:0; }
.controls input[type="date"], .controls input[type="text"], .controls .dim-search input {
  background:#f7f9fb; border:1px solid #e4e7ec; border-radius:8px; padding:7px 10px; font-size:13px; }
.controls .dim-search { flex:1; min-width:180px; display:flex; gap:6px; align-items:center; margin:0; }
.controls .dim-search input[type=text] { flex:1; min-width:140px; }
.controls button, .controls .date-range button {
  background:#fff; color:var(--text); /* 白底需显式深色字,否则被 .btn 的 color:#fff 盖成白底白字 */
  border:1px solid #e4e7ec; border-radius:8px; padding:7px 14px; font-size:13px; cursor:pointer; }
.controls button:hover { background:#f3f7fd; border-color:#2563eb; color:#2563eb; }

/* 合计行 + 精确徽章 */
.totals { display:flex; align-items:center; gap:16px; margin-top:14px; padding-top:12px;
  border-top:1px solid #eef1f5; font-size:13px; color:#6b7280; }
.totals b { color:#1f2937; font-weight:500; }
.badge-exact { margin-left:auto; color:#16a34a; background:#eafaf0; padding:2px 8px; border-radius:6px; font-size:12px; }

/* 报表占比条 */
.bar { display: inline-block; width: 140px; height: 10px; background: #eef2f7; border-radius: 5px; overflow: hidden; vertical-align: middle; }
.bar i { display: block; height: 100%; background: var(--primary); }

/* 行内表单(添加 IP) */
.inline-form { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin: 12px 0 16px; }
.inline-form input { padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; font-size: 14px; }
.form-card select { display: block; width: 100%; margin-top: 6px; padding: 9px 10px; border: 1px solid var(--line); border-radius: 6px; font-size: 14px; }
.form-card label.checkbox { display: flex; align-items: center; gap: 8px; }
.form-card label.checkbox input { width: auto; display: inline-block; margin: 0; }

/* 分页器 */
.pager { display: flex; align-items: center; gap: 16px; margin-top: 16px; }
.pager .disabled { opacity: .45; background: #cbd5e1; cursor: default; }

/* 安装代码 */
.snippet {
    width: 100%; font-family: ui-monospace, Menlo, Consolas, monospace;
    font-size: 13px; padding: 12px; border: 1px solid var(--line);
    border-radius: 8px; background: #f8fafc; resize: vertical;
}