:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --primary: #1f6feb;
  --text: #24292f;
  --muted: #6e7781;
  --border: #d0d7de;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
}
.nav {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 8px 12px;
  position: sticky;
  top: 0;
  z-index: 10;
}
.nav a {
  text-decoration: none;
  color: var(--muted);
  padding: 6px 12px;
  border-radius: 6px;
  white-space: nowrap;
  font-size: 14px;
}
.nav a.active { background: var(--primary); color: #fff; }
.container { max-width: 1100px; margin: 16px auto; padding: 0 12px; }
.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.toolbar select, .toolbar button {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  background: var(--card);
}
h2 { font-size: 18px; margin-bottom: 12px; }
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
}
.card .name { font-size: 15px; font-weight: 600; margin-bottom: 8px; }
.card .row { display: flex; justify-content: space-between; font-size: 13px; padding: 3px 0; }
.card .row .label { color: var(--muted); }
.card .row .value { font-weight: 600; }
.badge-ok { color: #1a7f37; }
.badge-expired { color: #cf222e; }
.badge-chrome_down { color: #9a6700; }
table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
}
th, td { padding: 8px 10px; text-align: left; border-bottom: 1px solid var(--border); }
th { background: #f6f8fa; white-space: nowrap; }
tr:last-child td { border-bottom: none; }
.chart { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 10px; margin-top: 12px; }
#chart { width: 100%; height: 320px; }
.muted { color: var(--muted); font-size: 12px; }
@media (max-width: 640px) {
  .cards { grid-template-columns: 1fr; }
  table { font-size: 12px; }
  th, td { padding: 6px 6px; }
  #chart { height: 240px; }
}