/* 見た目（2026-10-29）。外の読み込みは無し */
:root {
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #0f172a;
  --sub: #475569;
  --mute: #94a3b8;
  --line: #e2e8f0;
  --accent: #059669;
  --accent-hi: #10b981;
  --accent-soft: #ecfdf5;
  --accent-line: #a7f3d0;
  --dark: #0f172a;
  --plus: #059669;
  --minus: #e11d48;
  --warn: #d97706;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #020617;
    --card: #0f172a;
    --text: #f1f5f9;
    --sub: #cbd5e1;
    --mute: #64748b;
    --line: #1e293b;
    --accent-soft: rgba(6, 78, 59, 0.35);
    --accent-line: #065f46;
    --dark: #1e293b;
    --plus: #34d399;
    --minus: #fb7185;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
  line-height: 1.7;
}
a { color: var(--accent); }
.top {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  max-width: 820px; margin: 0 auto; padding: 14px 20px;
}
.brand { font-weight: 900; color: var(--text); text-decoration: none; letter-spacing: .02em; }
.brand small { color: var(--mute); font-weight: 700; margin-left: 6px; font-size: 12px; }
.top nav a { font-size: 13px; font-weight: 700; color: var(--sub); text-decoration: none; margin-left: 14px; }
main { max-width: 820px; margin: 0 auto; padding: 24px 20px 64px; }
.eyebrow { font-size: 12px; font-weight: 800; color: var(--accent); margin: 0; }
h1 { font-size: clamp(24px, 5.4vw, 32px); line-height: 1.35; font-weight: 900; margin: 8px 0 0; }
h2 { font-size: 18px; font-weight: 900; margin: 0; }
.lead { font-size: 15px; color: var(--sub); margin: 16px 0 0; }
.btns { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.btn {
  display: inline-block; border-radius: 999px; padding: 12px 24px; font-size: 14px; font-weight: 800;
  text-decoration: none; border: 1px solid var(--line); color: var(--text); background: var(--card); cursor: pointer;
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-hi); }
.btn:disabled { opacity: .5; cursor: default; }
section { margin-top: 56px; }
.grid2 { display: grid; gap: 12px; margin-top: 16px; }
@media (min-width: 640px) { .grid2 { grid-template-columns: 1fr 1fr; } }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 20px; }
.card b { display: block; font-weight: 900; }
.card p { margin: 6px 0 0; font-size: 14px; color: var(--sub); }
.soft { background: var(--card); border-radius: 18px; padding: 20px; border: 1px solid var(--line); }
.soft ul { margin: 8px 0 0; padding-left: 20px; font-size: 14px; color: var(--sub); }
.price { margin-top: 16px; border: 1px solid var(--line); border-radius: 18px; overflow: hidden; background: var(--card); }
.price .row { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; padding: 20px; }
.price .row + .row { border-top: 1px solid var(--line); }
.price .note { font-size: 12px; color: var(--mute); margin: 4px 0 0; }
.price .free { font-size: 24px; font-weight: 900; color: var(--accent); white-space: nowrap; }
.price .yen { text-align: right; white-space: nowrap; }
.price .yen strong { font-size: 24px; font-weight: 900; }
.price .yen span { font-size: 12px; color: var(--mute); }
.scroll { overflow-x: auto; margin-top: 20px; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th { font-size: 12px; color: var(--mute); text-align: left; padding: 8px 10px; font-weight: 700; }
td { padding: 9px 10px; border-top: 1px solid var(--line); }
tr.mine td { color: var(--accent); font-weight: 800; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.fine { font-size: 12px; color: var(--mute); margin-top: 8px; }
ol.flow { list-style: none; padding: 0; margin: 16px 0 0; }
ol.flow li { display: flex; gap: 14px; margin-bottom: 14px; }
ol.flow .n {
  flex: none; width: 28px; height: 28px; border-radius: 999px; background: var(--accent); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 900; font-size: 14px;
}
ol.flow b { font-weight: 900; }
ol.flow p { margin: 2px 0 0; font-size: 14px; color: var(--sub); }
dl.faq { margin: 12px 0 0; }
dl.faq div { padding: 16px 0; border-top: 1px solid var(--line); }
dl.faq dt { font-weight: 800; }
dl.faq dd { margin: 6px 0 0; font-size: 14px; color: var(--sub); }
.apply { border: 1px solid var(--accent-line); border-radius: 24px; padding: 24px; scroll-margin-top: 20px; }
.label { font-size: 12px; font-weight: 800; color: var(--sub); display: block; margin-bottom: 8px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips button {
  border: 1px solid var(--line); background: var(--card); color: var(--text); border-radius: 999px;
  padding: 7px 14px; font-size: 14px; font-weight: 700; cursor: pointer;
}
.chips button[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }
.field { margin-top: 20px; }
input[type=text], input[type=email], input[type=number], textarea, select {
  width: 100%; border: 1px solid #cbd5e1; background: var(--card); color: var(--text);
  border-radius: 14px; padding: 10px 14px; font-size: 16px; font-family: inherit;
}
textarea { line-height: 1.6; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.done { text-align: center; background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 28px; margin-top: 20px; }
.err { color: var(--minus); font-size: 13px; font-weight: 700; }
footer { max-width: 820px; margin: 0 auto; padding: 24px 20px 48px; font-size: 12px; color: var(--mute); border-top: 1px solid var(--line); }
footer a { color: var(--mute); margin-right: 14px; }

/* 計算機 */
.tabs { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; padding: 4px; margin-top: 28px; }
.tabs button { border: 0; background: none; border-radius: 999px; padding: 6px 16px; font-size: 14px; font-weight: 800; color: var(--sub); cursor: pointer; }
.tabs button[aria-selected="true"] { background: var(--accent); color: #fff; }
.form4 { display: grid; gap: 16px; margin-top: 24px; }
@media (min-width: 640px) { .form4 { grid-template-columns: 1fr 1fr; } .form3 { grid-template-columns: 1fr 1fr 1fr; } }
.form3 { display: grid; gap: 16px; margin-top: 20px; }
.f b { font-size: 14px; font-weight: 800; display: block; }
.f small { display: block; font-size: 12px; color: var(--mute); }
.f .in { display: flex; align-items: center; gap: 8px; margin-top: 6px; }
.f .in input { text-align: right; font-size: 18px; font-weight: 900; font-variant-numeric: tabular-nums; }
.f .in span { flex: none; font-size: 14px; font-weight: 700; color: var(--sub); }
.f select { margin-top: 6px; font-size: 14px; font-weight: 700; }
.result { margin-top: 28px; background: var(--dark); color: #fff; border-radius: 24px; padding: 24px; }
.result .k { font-size: 12px; color: #94a3b8; margin: 0; }
.result .big { font-size: 36px; font-weight: 900; margin: 4px 0 0; font-variant-numeric: tabular-nums; }
.result .why { font-size: 14px; color: #cbd5e1; margin: 6px 0 0; }
.result dl { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 16px; margin: 18px 0 0; }
@media (min-width: 640px) { .result dl { grid-template-columns: repeat(4, 1fr); } }
.result dt { font-size: 12px; color: #94a3b8; }
.result dd { margin: 0; font-weight: 800; font-variant-numeric: tabular-nums; }
.result .tax { font-size: 12px; color: #94a3b8; margin: 14px 0 0; }
textarea.paste { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 14px; margin-top: 12px; }
.plus { color: var(--plus); }
.minus { color: var(--minus); }
.warn { color: var(--warn); font-size: 12px; margin-top: 8px; }
.cta { margin-top: 48px; background: var(--accent-soft); border: 1px solid var(--accent-line); border-radius: 24px; padding: 24px; }
.cta p { font-size: 14px; color: var(--sub); }
.explain p { font-size: 14px; color: var(--sub); }
.hidden { display: none !important; }