:root {
  color-scheme: light dark;
  --bg: #fbfaf7; --surface: #ffffff; --text: #1d2125; --muted: #5b636b; --line: #dcd9d1; --accent: #1f4e8c;
  --ok-bg: #e2f2e6; --ok: #1c5c30; --warn-bg: #fbeed0; --warn: #6e4a00; --stop-bg: #fbe3e0; --stop: #8a2318;
  --muted-bg: #ececea;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15181b; --surface: #1e2226; --text: #e8e6e1; --muted: #a2a9b0; --line: #363b41; --accent: #8db8ee;
    --ok-bg: #173423; --ok: #9bdcae; --warn-bg: #3b2e0e; --warn: #eccb82; --stop-bg: #41201c; --stop: #f4aea5;
    --muted-bg: #2c3136;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.55 system-ui, -apple-system, "Segoe UI", sans-serif; }
header.site, main, footer.site { max-width: 46rem; margin: 0 auto; padding: 0 1rem; }
header.site { display: flex; flex-wrap: wrap; gap: .25rem 1.5rem; align-items: baseline; justify-content: space-between; padding-top: 1rem; padding-bottom: .75rem; border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; color: var(--text); text-decoration: none; }
nav { display: flex; flex-wrap: wrap; gap: .1rem 1rem; }
nav a { color: var(--muted); text-decoration: none; padding: .25rem 0; }
nav a[aria-current] { color: var(--text); border-bottom: 2px solid var(--accent); }
main { padding-top: 1.5rem; padding-bottom: 2.5rem; }
footer.site { padding-top: 1rem; padding-bottom: 2rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .85rem; }
footer.site p { margin: .25rem 0; }
h1 { font-size: 1.7rem; line-height: 1.2; margin: 0 0 .5rem; }
h2 { font-size: 1.1rem; margin: 1.5rem 0 .5rem; }
h3 { font-size: 1rem; margin: 1.25rem 0 .4rem; }
a { color: var(--accent); overflow-wrap: anywhere; }
.lead { color: var(--muted); margin-top: 0; }
.hint, small { color: var(--muted); font-size: .85rem; font-weight: 400; }
.hint { margin: .3rem 0 .6rem; }
small { display: block; }
label { display: block; font-weight: 600; font-size: .92rem; margin-bottom: .25rem; }
label.check { font-weight: 400; margin: .75rem 0; }
textarea, input[type=date], input[type=number] { width: 100%; padding: .55rem .65rem; font: inherit; color: inherit; background: var(--surface); border: 1px solid var(--line); border-radius: 6px; }
textarea { resize: vertical; }
input[type=checkbox] { margin-right: .4rem; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
#result:focus, #calc-result:focus { outline: none; }
button { font: inherit; font-weight: 600; padding: .5rem 1.2rem; color: #fff; background: #1f4e8c; border: 1px solid #1f4e8c; border-radius: 6px; cursor: pointer; }
button.secondary { color: var(--text); background: var(--surface); border-color: var(--line); font-weight: 500; }
button:disabled { opacity: .55; cursor: progress; }
.buttons { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .5rem; }
.fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); gap: .75rem; margin-bottom: .75rem; }
form + form { margin-top: 2rem; padding-top: .5rem; border-top: 1px solid var(--line); }
.result { margin-top: 1.5rem; }
.answer { margin-top: 1.25rem; }
.answer p { margin: 0 0 .8rem; }
.asof { font-weight: 600; }
.notice { padding: .6rem .8rem; background: var(--muted-bg); border-radius: 6px; margin: 1rem 0; }
.notice.stop { background: var(--stop-bg); color: var(--stop); }
.notice.pending { color: var(--muted); }
.badge { display: inline-block; padding: .08rem .5rem; border-radius: 4px; font-size: .78rem; font-weight: 700; }
.badge.ok { background: var(--ok-bg); color: var(--ok); }
.badge.warn { background: var(--warn-bg); color: var(--warn); }
.badge.stop { background: var(--stop-bg); color: var(--stop); }
.badge.muted { background: var(--muted-bg); color: var(--muted); }
.statuses { list-style: none; padding: 0; margin: 0; }
.statuses li { padding: .45rem 0; border-bottom: 1px solid var(--line); }
.ref { color: var(--muted); font-size: .85rem; }
.sources { padding-left: 1.75rem; }
.sources li { margin-bottom: .5rem; }
:target { background: var(--warn-bg); }
.feedback { margin-top: 1.75rem; padding-top: 1rem; border-top: 1px solid var(--line); }
.rule { padding: .25rem 0 .75rem; border-bottom: 1px solid var(--line); }
.rule p { margin: .4rem 0; }
.events { padding-left: 1.1rem; font-size: .93rem; }
.events li { margin: .45rem 0; }
.events time { font-weight: 600; }
summary { cursor: pointer; color: var(--accent); }
.calc-result { margin: 1rem 0 1.5rem; padding: .9rem 1rem; background: var(--surface); border: 1px solid var(--line); border-radius: 8px; }
.calc-result.over { border-color: var(--stop); }
.calc-result p { margin: .3rem 0; }
.calc-result p:first-child { font-size: 1.2rem; font-weight: 700; }