:root {
  --navy: #14254a;
  --navy-2: #24386a;
  --navy-soft: #eef3ff;
  --ink: #1b1f27;
  --muted: #5d6573;
  --line: #e0e3e9;
  --line-strong: #c3c9d4;
  --bg: #f4f5f7;
  --card: #ffffff;
  --danger: #b42318;
  --danger-soft: #fdf1f0;
  --check: #8a5a00;
  --check-soft: #fdf6e7;
  --ok: #17703a;
  --ok-soft: #eef8f1;
  --accent: #c8102e;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Hiragino Sans", "Noto Sans JP", "Yu Gothic UI", "Meiryo", sans-serif;
  line-height: 1.8;
  -webkit-text-size-adjust: 100%;
}
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
h1, h2, h3 { color: var(--navy); line-height: 1.45; }
a { color: var(--navy-2); }
.muted { color: var(--muted); font-size: .9rem; }

/* ヘッダー */
.top { position: sticky; top: 0; z-index: 10; background: #fff; border-bottom: 1px solid var(--line); }
.top-in { display: flex; align-items: center; justify-content: space-between; height: 56px; gap: 16px; }
.logo { display: flex; align-items: center; gap: 10px; color: var(--navy); text-decoration: none; white-space: nowrap; }
.logo img { display: block; flex: 0 0 auto; }
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-text b { font-size: 1.35rem; font-weight: 900; letter-spacing: .02em; color: #12307a; }
.logo-text b em { font-style: normal; color: #c8102e; margin-left: 1px; }
.logo-text small { margin-top: 3px; font-size: .66rem; font-weight: 700; letter-spacing: .08em; color: var(--muted); }
.tmp { font-weight: 400; color: var(--muted); font-size: .8em; }
.nav { display: flex; gap: 4px; overflow-x: auto; }
.nav a { padding: 6px 12px; color: var(--ink); text-decoration: none; font-size: .88rem; border-radius: 6px; white-space: nowrap; }
.nav a:hover { background: var(--navy-soft); color: var(--navy); }

/* 2列 */
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 24px; padding-top: 16px; padding-bottom: 48px; align-items: start; }

.main, .side { min-width: 0; }
.crumb { list-style: none; display: flex; flex-wrap: wrap; gap: 4px; margin: 0 0 16px; padding: 0; font-size: .78rem; color: var(--muted); }
.crumb li + li::before { content: "›"; margin-right: 4px; }
.crumb a { color: var(--muted); }

.page-h1 { margin: 0; font-size: 1.7rem; }
.page-lead { margin: 6px 0 0; color: #3a4150; font-size: .95rem; }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin: 14px 0 18px; padding: 0; }
.chips li { padding: 2px 10px; background: #fff; border: 1px solid var(--line); border-radius: 999px; font-size: .75rem; color: var(--muted); }

/* 結論（検索・AI が最初に拾う答え） */
.answer { margin: 0 0 18px; padding: 16px 20px; background: #fff; border: 1px solid var(--line); border-left: 4px solid var(--navy); border-radius: 8px; }
.answer-label { margin: 0 0 4px; font-size: .78rem; font-weight: 700; color: var(--navy); letter-spacing: .1em; }
.answer ul { margin: 0; padding-left: 1.2em; font-size: .92rem; }
.answer li { margin: 2px 0; }

/* ツール本体 */
.tool { background: var(--card); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.tool-sec { border: 0; margin: 0; padding: 20px 24px; min-width: 0; border-bottom: 1px solid var(--line); }
.tool-label { float: left; width: 100%; display: flex; align-items: center; gap: 8px; padding: 0; margin-bottom: 10px; font-weight: 700; color: var(--navy); }
.opt { padding: 0 6px; border: 1px solid var(--line-strong); border-radius: 4px; font-size: .7rem; font-weight: 400; color: var(--muted); }
.num { display: grid; place-items: center; width: 22px; height: 22px; background: var(--navy); color: #fff; font-size: .75rem; border-radius: 50%; }
.url-row { display: flex; gap: 8px; }
.url-row input { flex: 1 1 auto; min-width: 0; }
.hint { margin: 6px 0 0; font-size: .78rem; color: var(--muted); }

.choices { clear: both; display: grid; gap: 8px; }
.url-row { clear: both; }
.cols-5 { grid-template-columns: repeat(5, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
.choice { position: relative; }
.choice input { position: absolute; opacity: 0; pointer-events: none; }
.choice span {
  display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center;
  height: 100%; min-height: 46px; padding: 6px 8px; border: 1px solid var(--line-strong); border-radius: 6px; background: #fff;
  font-size: .88rem; line-height: 1.35; cursor: pointer; transition: border-color .12s, background .12s;
}
.choice span:hover { border-color: var(--navy); background: var(--navy-soft); }
.choice input:checked + span { background: var(--navy); border-color: var(--navy); color: #fff; font-weight: 700; }
.choice input:focus-visible + span { outline: 3px solid #9db8ff; outline-offset: 1px; }
.choice.unknown span { color: var(--muted); border-style: dashed; }
.choice.unknown input:checked + span { color: #fff; border-style: solid; }
.choice .old { display: block; font-size: .68rem; font-weight: 700; color: var(--danger); }
.choice input:checked + span .old { color: #fff; opacity: .95; }

.more { margin-top: 10px; font-size: .82rem; }
.more summary { cursor: pointer; color: var(--navy-2); }
.more input { margin-top: 8px; max-width: 220px; }

.tool-run { display: flex; gap: 12px; align-items: center; padding: 20px 24px; background: #fafbfc; }
.tool-run .btn-main { flex: 1 1 auto; }

input, textarea {
  width: 100%; font: inherit; padding: 10px 12px;
  border: 1px solid var(--line-strong); border-radius: 6px; background: #fff; color: var(--ink);
}
input:focus, textarea:focus { outline: 2px solid var(--navy); outline-offset: -1px; border-color: var(--navy); }

/* ボタン */
button { font: inherit; cursor: pointer; }
.btn-main {
  display: block; width: 100%; padding: 14px; border: 0; border-radius: 8px;
  background: var(--navy); color: #fff; font-weight: 700; font-size: 1rem; letter-spacing: .04em; text-align: center; text-decoration: none;
  transition: background .15s;
}
.btn-main:hover { background: var(--navy-2); }
.btn-main.small { padding: 10px; font-size: .9rem; }
.btn-sub { flex: 0 0 auto; padding: 0 16px; background: #fff; color: var(--navy); border: 1px solid var(--navy); border-radius: 6px; font-weight: 700; font-size: .9rem; }
.btn-sub:hover { background: var(--navy-soft); }
.btn-text { flex: 0 0 auto; padding: 10px 14px; background: none; border: 0; color: var(--muted); font-size: .9rem; }
.btn-text:hover { color: var(--ink); text-decoration: underline; }
button:disabled { opacity: .55; cursor: wait; }

.msg { white-space: pre-line; margin-top: 10px; padding: 10px 14px; border-left: 3px solid var(--navy); border-radius: 4px; background: var(--navy-soft); font-size: .86rem; }
.msg.error { border-color: var(--danger); background: var(--danger-soft); }
.msg.success { border-color: var(--ok); background: var(--ok-soft); }

/* 結果 */
.result { margin-top: 20px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.result-head { padding: 22px 24px; border-bottom: 1px solid var(--line); border-top: 5px solid var(--line-strong); }
.result.danger .result-head { background: var(--danger-soft); border-top-color: var(--danger); }
.result.check .result-head { background: var(--check-soft); border-top-color: var(--check); }
.result.ok .result-head { background: var(--ok-soft); border-top-color: var(--ok); }
.badge { display: inline-block; padding: 2px 12px; border-radius: 4px; color: #fff; font-weight: 700; font-size: .8rem; letter-spacing: .08em; }
.danger .badge { background: var(--danger); }
.check .badge { background: var(--check); }
.ok .badge { background: var(--ok); }
.result-head h2 { margin: 8px 0 0; font-size: 1.4rem; }
.danger .result-head h2 { color: var(--danger); }
.check .result-head h2 { color: var(--check); }
.ok .result-head h2 { color: var(--ok); }
.result-body { display: grid; grid-template-columns: 1fr 1fr; }
.result-body > div { padding: 20px 24px; }
.result-body > div + div { border-left: 1px solid var(--line); }
.result-body h3 { margin: 0 0 8px; font-size: .9rem; }
.dots { margin: 0; padding-left: 1.2em; font-size: .92rem; }
.dots li { margin-bottom: 6px; }
.steps { list-style: none; margin: 0; padding: 0; counter-reset: s; font-size: .92rem; }
.steps li { counter-increment: s; position: relative; padding-left: 32px; margin-bottom: 10px; }
.steps li::before {
  content: counter(s); position: absolute; left: 0; top: 3px;
  display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%;
  background: var(--navy); color: #fff; font-size: .75rem; font-weight: 700;
}
.note { margin: 0; padding: 12px 24px; border-top: 1px solid var(--line); font-size: .75rem; color: var(--muted); }

/* 次の一歩 */
.next { margin-top: 20px; padding: 24px; background: var(--card); border: 2px solid var(--navy); border-radius: 10px; scroll-margin-top: 72px; }
.next h2 { margin: 0; font-size: 1.35rem; }
.next-lead { margin: 4px 0 16px; color: #3a4150; font-size: .92rem; }
.paths { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.path { display: flex; flex-direction: column; align-items: flex-start; gap: 2px; padding: 14px; text-align: left; background: #fff; border: 1px solid var(--line-strong); border-radius: 8px; color: var(--ink); transition: border-color .12s, background .12s; }
.path b { font-size: 1rem; color: var(--navy); }
.path span { font-size: .78rem; color: var(--muted); line-height: 1.5; }
.path:hover { border-color: var(--navy); background: var(--navy-soft); }
.path.on { background: var(--navy); border-color: var(--navy); }
.path.on b, .path.on span { color: #fff; }
.path.first { border-color: var(--navy); border-width: 2px; }
.path-panel { margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--line); }
.path-panel h3 { margin: 0 0 12px; font-size: 1.1rem; }
.stuck { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: 16px; padding: 14px 16px; background: var(--navy-soft); border-radius: 8px; }
.stuck p { margin: 0; font-size: .9rem; }
.stuck .btn-sub { padding: 9px 16px; }
.form-intro h3 { margin: 0 0 4px; }
.form-intro p { margin: 0 0 4px; font-size: .9rem; color: #3a4150; }
.offer-box { margin-bottom: 20px; }
.offer-tag { margin: 0; font-size: .82rem; font-weight: 700; color: var(--accent); }
.offer-box h3 { margin: 2px 0 12px; font-size: 1.2rem; }
.offer-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 20px; align-items: center; }
.checks { list-style: none; margin: 0; padding: 0; font-size: .92rem; }
.checks li { position: relative; padding: 7px 0 7px 26px; border-bottom: 1px solid var(--line); }
.checks li::before { content: ""; position: absolute; left: 4px; top: 14px; width: 11px; height: 6px; border-left: 2.5px solid var(--ok); border-bottom: 2.5px solid var(--ok); transform: rotate(-45deg); }
.price { padding: 18px; background: var(--navy-soft); border-radius: 8px; text-align: center; }
.price span { display: block; font-size: .78rem; color: var(--muted); }
.price b { display: block; font-size: 1.35rem; color: var(--navy); }
.price small { display: block; margin-top: 2px; }
.price small { color: var(--muted); }
.consult { margin-top: 16px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-weight: 700; margin-bottom: 4px; font-size: .88rem; }
.field label i { font-style: normal; margin-left: 6px; padding: 0 6px; border-radius: 3px; background: var(--accent); color: #fff; font-size: .68rem; vertical-align: 2px; }
.consult .hint { margin: -4px 0 14px; }
.sources { margin: 0; padding-left: 1.2em; font-size: .88rem; }
.sources li { margin-bottom: 4px; }

/* 解説 */
.doc { margin-top: 32px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 8px 28px 24px; }
.doc section { padding-top: 20px; }
.doc h2 { font-size: 1.2rem; margin: 0 0 10px; padding-bottom: 8px; border-bottom: 2px solid var(--navy); }
.doc p { margin: 0 0 10px; font-size: .94rem; }
.howto { margin: 0; padding-left: 1.4em; font-size: .94rem; }
.howto li { margin-bottom: 6px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 8px; }
.vt { width: 100%; border-collapse: collapse; font-size: .88rem; }
.vt th, .vt td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--line); white-space: nowrap; }
.vt thead th { background: var(--navy-soft); color: var(--navy); font-size: .78rem; }
.vt tbody tr:last-child td { border-bottom: 0; }
.vt td:first-child { font-weight: 700; }
.st { display: inline-block; padding: 1px 8px; border-radius: 4px; font-size: .75rem; font-weight: 700; }
.st.danger { background: var(--danger-soft); color: var(--danger); }
.st.check { background: var(--check-soft); color: var(--check); }
.st.ok { background: var(--ok-soft); color: var(--ok); }
.faq { border: 1px solid var(--line); border-radius: 8px; margin-bottom: 8px; }
.faq summary { cursor: pointer; padding: 12px 44px 12px 16px; font-weight: 700; font-size: .92rem; position: relative; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "Q"; margin-right: 8px; color: var(--accent); }
.faq summary::after { content: "+"; position: absolute; right: 16px; top: 8px; font-size: 1.3rem; color: var(--navy); font-weight: 400; }
.faq[open] summary::after { content: "−"; }
.faq p { margin: 0; padding: 0 16px 14px; color: #3a4150; font-size: .9rem; }

/* 右側 */
.side { position: sticky; top: 72px; display: grid; gap: 16px; margin-top: 34px; }
.side-box { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; }
.side-box h2 { font-size: .95rem; margin: 0 0 10px; }
.side-box p { font-size: .85rem; margin: 0 0 12px; color: #3a4150; }
.side-box.cta { border: 2px solid var(--navy); }
.facts { margin: 0; }
.facts > div { display: flex; justify-content: space-between; gap: 8px; padding: 6px 0; border-bottom: 1px dashed var(--line); font-size: .85rem; }
.facts > div:last-child { border-bottom: 0; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; font-weight: 700; color: var(--navy); }
.facts .red { color: var(--danger); }
.tools { list-style: none; margin: 0; padding: 0; font-size: .85rem; }
.tools li { display: flex; align-items: center; gap: 8px; padding: 7px 0; color: var(--muted); border-bottom: 1px dashed var(--line); }
.tools li:last-child { border-bottom: 0; }
.tools li.on { color: var(--navy); font-weight: 700; }
.tools em { margin-left: auto; font-style: normal; font-size: .7rem; padding: 0 6px; border: 1px solid var(--line); border-radius: 4px; }

.foot { padding: 24px 0; background: #fff; border-top: 1px solid var(--line); color: var(--muted); font-size: .82rem; }
.foot p { margin: 0 0 4px; }
.foot .small { font-size: .74rem; }

/* スマホ・タブレット */
@media (max-width: 900px) {
  .paths { grid-template-columns: 1fr 1fr; }
  .layout { grid-template-columns: minmax(0, 1fr); }
  .side { position: static; margin-top: 0; }
}
@media (max-width: 640px) {
  .nav { display: none; }
  .tool-sec, .tool-run { padding: 16px; }
  .url-row { flex-direction: column; }
  .btn-sub { padding: 10px; }
  .cols-5 { grid-template-columns: repeat(3, 1fr); }
  .cols-4 { grid-template-columns: repeat(2, 1fr); }
  .result-head, .result-body > div, .note { padding-left: 16px; padding-right: 16px; }
  .result-body { grid-template-columns: 1fr; }
  .result-body > div + div { border-left: 0; border-top: 1px solid var(--line); }
  .next { padding: 18px 16px; }
  .paths { grid-template-columns: 1fr 1fr; }
  .offer-grid, .grid-2 { grid-template-columns: 1fr; }
  .doc { padding: 4px 16px 20px; }
}

/* 見出し＋箇条書きのまとまり。文章で説明せず、短い項目を並べる */
.doc-lead { margin: -2px 0 14px; color: #3a4150; font-size: .92rem; }
.groups { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-bottom: 12px; }
.groups.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.group { padding: 16px 18px; border-radius: 12px; background: rgba(255, 255, 255, .7); border: 1px solid rgba(20, 37, 74, .08); }
.group h3 { margin: 0 0 8px; font-size: .95rem; color: var(--navy); }
.glist { list-style: none; margin: 0; padding: 0; }
.glist li { position: relative; padding: 6px 0 6px 18px; font-size: .88rem; line-height: 1.65; border-bottom: 1px dashed rgba(20, 37, 74, .1); }
.glist li:last-child { border-bottom: 0; }
.glist li::before { content: ""; position: absolute; left: 2px; top: 1.05em; width: 7px; height: 7px; border-radius: 2px; background: var(--blue, #2563eb); }
code { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: .85em; padding: 1px 5px; border-radius: 4px; background: rgba(37, 99, 235, .08); color: #1e3a8a; white-space: nowrap; }

/* フッター：運営者と各種ページ（信用のため、どのページにも出す） */
.foot { padding: 36px 0 28px; background: #0f1b36; color: #c7d0e3; font-size: .85rem; border-top: 0; margin-top: 48px; }
.foot-in { display: grid; grid-template-columns: 1fr 1.2fr; gap: 20px 40px; }
.foot-name { margin: 0 0 6px; font-size: 1.1rem; font-weight: 700; color: #fff; }
.foot-brand p { margin: 0; line-height: 1.8; }
.foot-links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px 20px; align-content: start; }
.foot-links a { color: #e2e8f5; text-decoration: none; }
.foot-links a:hover { text-decoration: underline; }
.foot-note, .foot-copy { grid-column: 1 / -1; margin: 0; font-size: .75rem; color: #93a0bb; }
.foot-note { padding-top: 16px; border-top: 1px solid rgba(255, 255, 255, .1); }
@media (max-width: 760px) {
  .groups, .groups.three { grid-template-columns: 1fr; }
  .foot-in { grid-template-columns: 1fr; }
}
.tools a { color: var(--navy); text-decoration: none; }
.tools a:hover { text-decoration: underline; }