/* iPO 朴素样式（单文件，零外链） */
* { box-sizing: border-box; }
html { font-size: 16px; }
body {
  margin: 0;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  background: #f3f5f7;
  color: #1c2430;
  line-height: 1.6;
}
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; background: #eef1f4; padding: 0 .3em; border-radius: 3px; }

.topbar {
  display: flex; align-items: center; gap: 1.2rem;
  background: #142033; color: #fff; padding: .65rem 1.2rem;
}
.topbar .brand { font-weight: 700; letter-spacing: .5px; }
.topbar nav a { color: #cfe0f5; text-decoration: none; margin-right: .8rem; }
.topbar nav a:hover { color: #fff; text-decoration: underline; }
.logout-form { margin-left: auto; }
.logout-form button {
  background: transparent; color: #cfe0f5; border: 1px solid #46608a;
  border-radius: 4px; padding: .25rem .7rem; cursor: pointer;
}
.logout-form button:hover { color: #fff; border-color: #9db8dd; }

main { max-width: 1080px; margin: 1.4rem auto; padding: 0 1rem; }
h1 { font-size: 1.35rem; margin: .2rem 0 1rem; }
h2 { font-size: 1.05rem; margin: 0 0 .6rem; }

.card {
  background: #fff; border: 1px solid #e2e7ee; border-radius: 8px;
  padding: 1rem 1.2rem; margin-bottom: 1rem;
  box-shadow: 0 1px 2px rgba(16, 30, 54, .04);
}
.card.empty { color: #5a6b80; }

.airport.down { border-left: 4px solid #d64545; }
.airport.ok { border-left: 4px solid #2f9e63; }

.badge {
  display: inline-block; font-size: .78rem; font-weight: 600;
  border-radius: 999px; padding: .05rem .6rem; vertical-align: middle;
}
.badge.ok { background: #e2f5ea; color: #1f7a4a; }
.badge.down { background: #fdeaea; color: #b02a2a; }
.badge.warn { background: #fdf3e0; color: #9a6b12; }

ul.checks { list-style: none; padding: 0; margin: .4rem 0; }
ul.checks li { padding: .1rem 0; }
.mark-ok { color: #1f7a4a; font-weight: 700; }
.mark-bad { color: #b02a2a; font-weight: 700; }

table.plain { border-collapse: collapse; width: 100%; margin: .5rem 0; font-size: .92rem; }
table.plain th, table.plain td { border: 1px solid #e2e7ee; padding: .3rem .55rem; text-align: left; }
table.plain th { background: #f7f9fb; font-weight: 600; }

.err-line { color: #8a2f2f; background: #fdf1f1; border: 1px solid #f2cccc; border-radius: 4px; padding: .3rem .6rem; font-size: .88rem; word-break: break-all; }
.muted { color: #6b7a8d; font-size: .88rem; }

.login-card { max-width: 380px; margin: 8vh auto 0; }
.login-card h1 { text-align: center; }
.login-card label { display: block; margin: .7rem 0 .2rem; font-size: .92rem; color: #34445a; }
.login-card input {
  width: 100%; padding: .5rem .6rem; border: 1px solid #c7d0dc; border-radius: 5px; font-size: 1rem;
}
.login-card input:focus { outline: 2px solid #3b6ea5; border-color: #3b6ea5; }
.login-card button {
  width: 100%; margin-top: 1rem; padding: .55rem;
  background: #1d4e89; color: #fff; border: 0; border-radius: 5px; font-size: 1rem; cursor: pointer;
}
.login-card button:hover { background: #163e6e; }

.alert { border-radius: 5px; padding: .5rem .8rem; margin: .6rem 0; font-size: .92rem; }
.alert.error { background: #fdeaea; color: #8a2f2f; border: 1px solid #f2c5c5; }

.foot { text-align: center; color: #8794a5; font-size: .8rem; padding: 1.2rem 0 1.6rem; }

/* ── S2/S3/S4 增补（实施轮② CC#3） ───────────────────────────── */
.banner-error {
  background: #fdeaea; border: 1px solid #e8b4b4; color: #8a2f2f;
  border-radius: 6px; padding: .55rem .9rem; margin: .6rem 0;
}
.banner-warn {
  background: #fdf6e3; border: 1px solid #e6d09a; color: #7a5c10;
  border-radius: 6px; padding: .55rem .9rem; margin: .6rem 0;
}
.text-ok { color: #1f7a4a; font-weight: 600; }

th.num, td.num { text-align: right; font-variant-numeric: tabular-nums; }
table.zebra tr:nth-child(even) td { background: #f7f9fb; }

.cards-row { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: .4rem; }
.cards-row .card { flex: 1 1 260px; margin-bottom: 0; }
.sum-card table { margin: .2rem 0 0; }
.card.total { border-left: 4px solid #1d4e89; }

.filter-form { display: flex; flex-wrap: wrap; gap: .6rem; align-items: flex-end; margin: .8rem 0 .4rem; }
.filter-form label { display: flex; flex-direction: column; gap: .15rem; font-size: .85rem; color: #34445a; }
.filter-form input, .filter-form select { padding: .35rem .5rem; border: 1px solid #c7d0dc; border-radius: 4px; font-size: .92rem; }
.filter-form button, .inline-form button {
  padding: .42rem .9rem; background: #1d4e89; color: #fff; border: 0; border-radius: 4px;
  font-size: .92rem; cursor: pointer;
}
.filter-form button:hover, .inline-form button:hover { background: #163e6e; }
.inline-form { display: inline-block; margin: .2rem 0 .8rem; }

.pager { display: flex; gap: .8rem; align-items: center; margin: .8rem 0 .2rem; font-size: .92rem; }
.pager a { color: #1d4e89; }

.pre-wrap {
  white-space: pre-wrap; word-break: break-all;
  background: #f7f9fb; border: 1px solid #e2e7ee; border-radius: 6px; padding: .7rem .9rem; font-size: .85rem;
}
.notice-card { max-width: 560px; margin: 6vh auto 0; }