:root {
  color-scheme: light dark;
  --bg: #f4f3ef;
  --card: #ffffff;
  --ink: #23262a;
  --muted: #6a6f76;
  --line: #dddbd3;
  --accent: #2f6f5e;
  --hover: #eef4f1;
  --warn: #a4501c;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17191b;
    --card: #212427;
    --ink: #eceded;
    --muted: #9ba0a6;
    --line: #363a3e;
    --accent: #7cc4ae;
    --hover: #2a312e;
    --warn: #e5a26f;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 16px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  -webkit-text-size-adjust: 100%;
}
.top {
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px 20px 12px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 24px;
}
h1 { margin: 0; font-size: 22px; }
nav { display: flex; gap: 16px; font-size: 14px; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--accent); }

main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px 48px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  align-items: start;
}
.date-group {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  align-items: start;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px 18px 18px;
  min-width: 0;
}
h2 { margin: 0 0 12px; font-size: 16px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; }
.field { display: block; flex: 1 1 130px; min-width: 0; }
.field.narrow { flex: 0 1 110px; }
.field > span { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
input, select {
  width: 100%;
  height: 42px;
  padding: 0 10px;
  font: inherit;
  font-size: 17px;
  color: inherit;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 7px;
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }
input::placeholder { color: var(--muted); opacity: .75; font-size: 15px; }

.out { margin-top: 12px; }
.out:empty { display: none; }
.res {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 7px 8px;
  margin: 0 -8px;
  width: calc(100% + 16px);
  background: none;
  border: 0;
  border-radius: 6px;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}
.res:hover, .res:focus-visible { background: var(--hover); outline: none; }
.res .k { font-size: 13px; color: var(--muted); }
.res .v { font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.res.main .v { font-size: 22px; font-weight: 600; color: var(--accent); line-height: 1.3; }
.res .sub { display: block; font-size: 13px; font-weight: 400; color: var(--muted); }
.note { margin: 6px 0 0; font-size: 13px; color: var(--muted); }
.note.warn { color: var(--warn); }

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translate(-50%, 8px);
  padding: 7px 14px;
  max-width: 80vw;
  background: var(--ink);
  color: var(--bg);
  border-radius: 7px;
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .15s, transform .15s;
}
.toast.on { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 760px) {
  main, .date-group { grid-template-columns: minmax(0, 1fr); }
  .top { padding-top: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .toast { transition: none; }
}