:root {
  --bg: #f4f8f6;
  --card: #fff;
  --soft: #e7f3f0;
  --line: #d5e2de;
  --ink: #21302d;
  --ink-2: #566662;
  --teal: #0f766e;
  --tax: #4b5fb3;
  --social: #c2552d;
  --warn-bg: #fdf0e3;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Hiragino Maru Gothic ProN', 'Hiragino Sans', 'Yu Gothic UI', 'Yu Gothic', 'Meiryo', sans-serif;
  font-size: 17px;
  line-height: 1.75;
}
main { max-width: 640px; margin: 0 auto; padding: 0 16px 48px; }
[hidden] { display: none !important; }

.hero { text-align: center; padding: 36px 0 20px; }
.eyebrow { margin: 0; color: var(--teal); font-weight: 700; font-size: 14px; }
h1 { margin: 4px 0 8px; font-size: 32px; }
.lead { margin: 0; color: var(--ink-2); }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 20px; margin-bottom: 16px; }
h2 { margin: 0 0 10px; font-size: 20px; color: var(--teal); }
p { margin: 0 0 10px; }
.note { color: var(--ink-2); font-size: 15px; }
.small { font-size: 14px; }
.notice { margin: 12px 0 0; padding: 10px 14px; border-radius: 12px; background: var(--warn-bg); font-size: 15px; }

.q { margin-bottom: 14px; }
.q > p { margin: 0 0 4px; font-size: 15px; font-weight: 700; }
.seg { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 6px; }
.segb { min-height: 46px; padding: 4px; border: 1px solid var(--line); border-radius: 10px; background: var(--card); color: var(--ink-2); font: inherit; font-size: 14px; cursor: pointer; touch-action: manipulation; }
.segb.on { background: var(--teal); border-color: var(--teal); color: #fff; font-weight: 700; }

.sim-value { margin: 6px 0 0; text-align: center; font-size: 44px; font-weight: 700; color: var(--teal); line-height: 1.2; }
.sim-value small { font-size: 18px; margin-left: 4px; }
.track { position: relative; padding-bottom: 14px; }
#sim { display: block; width: 100%; height: 44px; margin: 0; accent-color: var(--teal); touch-action: pan-y; }
.ticks { position: absolute; left: 12px; right: 12px; bottom: 2px; height: 10px; }
.tick { position: absolute; top: 0; width: 3px; height: 10px; margin-left: -1.5px; border-radius: 2px; background: var(--tax); }
.tick.social { background: var(--social); }
.sim-next { margin: 8px 0 2px; text-align: center; font-weight: 700; }
#sim-credit { text-align: center; }

.road { list-style: none; margin: 12px 0 0; padding: 0; }
.road li { position: relative; padding: 10px 0 10px 24px; border-left: 3px solid var(--line); margin-left: 6px; }
.road li::before { content: ''; position: absolute; left: -8px; top: 16px; width: 13px; height: 13px; border-radius: 50%; background: var(--tax); border: 2px solid var(--card); }
.road li.social::before { background: var(--social); }
.road li.done { color: var(--ink-2); }
.road li.done::before { background: var(--line); }
.road li.here { padding-top: 6px; padding-bottom: 6px; font-weight: 700; color: var(--teal); }
.road li.here::before { background: var(--teal); }
.road-head { display: flex; flex-wrap: wrap; gap: 0 8px; align-items: baseline; }
.road-yen { font-weight: 700; font-size: 18px; }
.road-side { font-size: 13px; color: var(--ink-2); }
.road-text { margin: 2px 0 0; font-size: 15px; }

.field { display: block; margin-bottom: 12px; }
.field > span { display: block; font-size: 15px; font-weight: 700; margin-bottom: 4px; }
input[type='text'], select {
  display: block;
  width: 100%;
  min-width: 0;
  min-height: 48px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--card);
  color: var(--ink);
  font: inherit;
}
input:focus-visible, select:focus-visible, button:focus-visible, summary:focus-visible, a:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; }

.m-big { margin: 4px 0; text-align: center; font-size: 15px; }
.m-big b { display: block; font-size: 38px; line-height: 1.3; color: var(--teal); }
.m-big.over b { font-size: 28px; color: var(--social); }
.bar { height: 16px; border-radius: 99px; background: var(--soft); overflow: hidden; margin: 8px 0 4px; }
.bar i { display: block; height: 100%; background: var(--teal); }
.bar.over i { background: var(--social); }
.bar-label { display: flex; justify-content: space-between; font-size: 13px; color: var(--ink-2); margin-bottom: 10px; }
.m-rows { margin: 0 0 10px; padding: 10px 14px; border-radius: 12px; background: var(--soft); }
.m-rows p { margin: 0; font-size: 15px; }
.m-rows b { font-size: 17px; }

.input-box { margin-bottom: 14px; border-top: 1px solid var(--line); padding-top: 6px; }
summary { min-height: 44px; padding: 8px 0; font-weight: 700; color: var(--teal); cursor: pointer; }
.months { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 10px; margin-bottom: 12px; }
.month { display: grid; grid-template-columns: 2.6em 1fr; align-items: center; gap: 4px; font-size: 15px; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.two .field { margin-bottom: 8px; }

.btn { display: block; width: 100%; min-height: 50px; padding: 10px 16px; border: 0; border-radius: 12px; font: inherit; font-weight: 700; text-align: center; cursor: pointer; touch-action: manipulation; }
.btn.primary { background: var(--teal); color: #fff; margin-bottom: 10px; }
.btn.ghost { background: var(--card); color: var(--teal); border: 1px solid var(--teal); margin-top: 10px; }
#r-image { display: block; width: 100%; border-radius: 10px; border: 1px solid var(--line); }

.rule { border-top: 1px solid var(--line); padding: 10px 0 2px; }
.rule:first-child { border-top: 0; padding-top: 0; }
.rule h3 { margin: 0; font-size: 16px; }
.rule p { font-size: 15px; }
.sources { margin: 4px 0 0; padding-left: 1.2em; font-size: 14px; }
.sources a { color: var(--teal); }

.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--teal); color: #fff; padding: 10px 18px; border-radius: 99px; font-size: 15px; z-index: 10; max-width: calc(100vw - 32px); }

@media (max-width: 360px) {
  .months { grid-template-columns: 1fr; }
}