:root {
  --bg: #f6f7fb; --card: #ffffff; --ink: #1c2233; --sub: #566079; --line: #e1e5ef;
  --accent: #2557d6; --accent-ink: #ffffff; --warn: #b4411c; --ok: #1f7a4d; --muted: #7b6a1c; --news: #8a4fb0;
  --radius: 16px; --shadow: 0 6px 24px rgba(28, 34, 51, .08);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1320; --card: #181e30; --ink: #eef1fa; --sub: #a6afc7; --line: #2a3250;
    --accent: #7ea2ff; --accent-ink: #0f1320; --warn: #ff9a72; --ok: #6fd9a2; --muted: #e6cd6a; --news: #d3a6f0;
    --shadow: none;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: "Hiragino Sans", "Yu Gothic UI", "Noto Sans JP", system-ui, sans-serif;
  line-height: 1.75; font-size: 16px;
}
.top-note { background: var(--ink); color: var(--bg); font-size: .82rem; padding: .55rem 1rem; text-align: center; margin: 0; }
.top-note b { border: 1px solid currentColor; border-radius: 6px; padding: 0 .4em; margin-right: .5em; }
main, header .in, footer .in { max-width: 860px; margin: 0 auto; padding: 0 1rem; }
header { padding: 2.2rem 0 1rem; }
h1 { font-size: clamp(1.5rem, 4.5vw, 2.1rem); line-height: 1.35; margin: 0 0 .6rem; letter-spacing: .01em; }
.lead { color: var(--sub); margin: 0; }
section { margin: 1.6rem 0; }
h2 { font-size: 1.25rem; margin: 0 0 .8rem; }
h3 { margin: 0 0 .4rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.2rem; box-shadow: var(--shadow); }
.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
label { display: block; font-weight: 600; font-size: .92rem; margin-top: .8rem; }
.check { display: flex; align-items: center; gap: .6rem; min-height: 44px; margin-top: 0; }
.check input { width: 22px; height: 22px; accent-color: var(--accent); }
.hint { display: block; font-weight: 400; color: var(--sub); font-size: .8rem; }
input[type=number], select {
  width: 100%; min-height: 48px; padding: .6rem .8rem; margin-top: .3rem; font-size: 1rem;
  border-radius: 12px; border: 1px solid var(--line); background: var(--bg); color: var(--ink);
}
input:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
dl { margin: 1rem 0 0; display: grid; grid-template-columns: 1fr auto; gap: .35rem 1rem; }
dt { color: var(--sub); } dd { margin: 0; font-weight: 700; text-align: right; font-variant-numeric: tabular-nums; }
dd.big { color: var(--warn); font-size: 1.3rem; }
.total { text-align: center; background: linear-gradient(135deg, #2557d6, #6b4fd8); color: #fff; border-radius: var(--radius); padding: 1.4rem 1rem; margin: 1rem 0; }
.total .num { font-size: clamp(2rem, 8vw, 3rem); font-weight: 800; font-variant-numeric: tabular-nums; }
.total p { margin: .2rem 0 0; opacity: .95; font-size: .92rem; }
.btns { display: flex; flex-wrap: wrap; gap: .6rem; }
button {
  min-height: 44px; padding: .5rem 1.1rem; border-radius: 999px; border: 1px solid var(--line);
  background: var(--card); color: var(--ink); font-size: .92rem; cursor: pointer; transition: transform .15s ease;
}
button:hover { transform: translateY(-1px); }
.events { list-style: none; margin: 1rem 0 0; padding: 0; display: grid; gap: .9rem; }
.event { background: var(--card); border: 1px solid var(--line); border-left: 6px solid var(--accent); border-radius: 12px; padding: 1rem 1.1rem; }
.event.st-1 { border-left-color: var(--news); }
.event.st-2 { border-left-color: var(--ok); }
.event.st-3 { border-left-color: var(--muted); }
.event h3 { font-size: 1.05rem; margin: .3rem 0; }
.event p { margin: .25rem 0; font-size: .92rem; }
.src { color: var(--sub); font-size: .8rem !important; }
.ev-head { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; }
.badge { background: var(--accent); color: var(--accent-ink); border-radius: 999px; padding: 0 .7em; font-size: .78rem; font-weight: 700; }
.st-1 .badge { background: var(--news); color: var(--accent-ink); }
.st-2 .badge { background: var(--ok); color: var(--accent-ink); }
.st-3 .badge { background: var(--muted); color: var(--accent-ink); }
.when { font-weight: 600; font-size: .9rem; }
.notice { font-size: .88rem; color: var(--sub); }
.notice li { margin: .3rem 0; }
footer { margin-top: 2.5rem; padding: 1.6rem 0 3rem; border-top: 1px solid var(--line); font-size: .85rem; color: var(--sub); }
a { color: var(--accent); }
[hidden] { display: none !important; }