:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #1c2430;
  --muted: #5b6878;
  --line: #dde3ea;
  --accent: #0b6e4f;
  --accent-ink: #ffffff;
  --accent-soft: #e3f3ec;
  --warn: #b45309;
  --danger: #b91c1c;
  --ok: #15803d;
  --code-bg: #f1f3f6;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .1);
  --font: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic UI", Meiryo, system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Noto Sans Mono CJK JP", monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f141a; --surface: #171e26; --text: #e6ebf1; --muted: #9aa7b6; --line: #2a3441;
    --accent: #3fb48c; --accent-ink: #06211a; --accent-soft: #15322a; --code-bg: #0b1016;
    --shadow: 0 1px 2px rgba(0,0,0,.4);
  }
}
:root[data-theme="dark"] {
  --bg: #0f141a; --surface: #171e26; --text: #e6ebf1; --muted: #9aa7b6; --line: #2a3441;
  --accent: #3fb48c; --accent-ink: #06211a; --accent-soft: #15322a; --code-bg: #0b1016;
  --shadow: 0 1px 2px rgba(0,0,0,.4);
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--font); line-height: 1.75; font-size: 16px; }
a { color: var(--accent); }
a:hover { text-decoration-thickness: 2px; }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }
.visually-hidden, .skip { position: absolute; left: -9999px; }
.skip:focus { left: 8px; top: 8px; background: var(--surface); padding: 8px; z-index: 10; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
code, pre, textarea.mono, input.mono, .mono { font-family: var(--mono); }
code { background: var(--code-bg); padding: .1em .35em; border-radius: 4px; font-size: .92em; }
pre { background: var(--code-bg); padding: 12px; border-radius: var(--radius); overflow: auto; }
pre code { background: none; padding: 0; }
h1 { font-size: 1.7rem; line-height: 1.35; margin: .4em 0 .5em; }
h2 { font-size: 1.3rem; margin: 1.8em 0 .6em; padding-bottom: .25em; border-bottom: 1px solid var(--line); }
h3 { font-size: 1.1rem; margin: 1.4em 0 .5em; }
table { border-collapse: collapse; width: 100%; margin: 1em 0; font-size: .95rem; }
th, td { border: 1px solid var(--line); padding: 6px 10px; text-align: left; vertical-align: top; }
th { background: var(--code-bg); }
.site-header { background: var(--surface); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.site-header .wrap { display: flex; align-items: center; gap: 16px; min-height: 56px; }
.brand { font-weight: 700; text-decoration: none; color: var(--text); font-size: 1.1rem; letter-spacing: .02em; }
.site-nav { display: flex; gap: 14px; margin-left: auto; overflow-x: auto; white-space: nowrap; }
.site-nav a { text-decoration: none; color: var(--muted); font-size: .9rem; padding: 6px 0; }
.site-nav a:hover { color: var(--accent); }
.theme-toggle { background: none; border: 1px solid var(--line); color: var(--muted); border-radius: 50%; width: 32px; height: 32px; cursor: pointer; flex: none; }
.ad-note { font-size: .78rem; color: var(--muted); padding-top: 8px; }
main { padding: 8px 16px 48px; }
.crumbs { font-size: .85rem; color: var(--muted); margin: 8px 0 4px; }
.crumbs a { color: var(--muted); }
.lead { font-size: 1.05rem; color: var(--muted); margin-top: 0; }
.hero { padding: 24px 0 8px; }
.hero h1 { font-size: 1.9rem; }
.tool-search input { width: 100%; font-size: 1rem; padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); color: var(--text); }
.tool-grid { list-style: none; padding: 0; margin: 12px 0 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.tool-grid li a { display: block; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; text-decoration: none; color: var(--text); box-shadow: var(--shadow); height: 100%; }
.tool-grid li a:hover { border-color: var(--accent); }
.tool-grid strong { display: block; font-size: 1rem; margin-bottom: 2px; }
.tool-grid span { display: block; color: var(--muted); font-size: .85rem; line-height: 1.5; }
.tool-grid li[hidden] { display: none; }
.cat-block h2 a { color: inherit; text-decoration: none; }
.tool-head .privacy-badge { display: inline-block; background: var(--accent-soft); color: var(--text); border-radius: 999px; padding: 4px 12px; font-size: .82rem; }
.tool-body { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); margin: 16px 0 24px; }
.tool-body label { display: block; font-weight: 600; font-size: .9rem; margin: 10px 0 4px; }
.tool-body textarea, .tool-body input[type="text"], .tool-body input[type="url"], .tool-body input[type="number"], .tool-body select, .tool-body input[type="search"], .tool-body input[type="password"] {
  width: 100%; font-size: 1rem; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--text); font-family: inherit;
}
.tool-body textarea { min-height: 160px; resize: vertical; line-height: 1.5; }
.tool-body textarea.mono { font-family: var(--mono); font-size: .92rem; }
.tool-body input[type="checkbox"], .tool-body input[type="radio"] { width: auto; margin-right: 6px; }
.tool-body .row { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: flex-end; }
.tool-body .row > * { flex: 1 1 160px; }
.tool-body .row > .fixed { flex: 0 0 auto; }
.tool-body .inline label { display: inline-block; font-weight: 500; margin: 4px 14px 4px 0; }
.btn { display: inline-block; background: var(--accent); color: var(--accent-ink); border: 0; border-radius: 8px; padding: 10px 18px; font-size: 1rem; font-weight: 600; cursor: pointer; font-family: inherit; }
.btn:hover { filter: brightness(1.08); }
.btn.secondary { background: var(--surface); color: var(--text); border: 1px solid var(--line); }
.btn.small { padding: 6px 12px; font-size: .875rem; }
.btn:disabled { opacity: .5; cursor: default; }
.btns { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 4px; }
.result { margin-top: 14px; }
.result-box { background: var(--bg); border: 1px dashed var(--line); border-radius: 8px; padding: 12px; min-height: 48px; white-space: pre-wrap; word-break: break-all; }
.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; margin: 12px 0; }
.stat { background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; }
.stat b { display: block; font-size: 1.4rem; line-height: 1.2; }
.stat span { color: var(--muted); font-size: .8rem; }
.ok { color: var(--ok); } .warn { color: var(--warn); } .danger { color: var(--danger); }
.note { font-size: .875rem; color: var(--muted); }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--text); color: var(--bg); padding: 8px 16px; border-radius: 999px; font-size: .9rem; opacity: 0; transition: opacity .2s; pointer-events: none; z-index: 20; }
.toast.show { opacity: 1; }
.guide { margin-top: 8px; }
.guide h2:first-child { margin-top: .5em; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 8px 14px; margin: 8px 0; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq-a { padding-top: 6px; }
.promo { background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: var(--radius); padding: 12px 16px; margin: 20px 0; }
.promo-label { font-size: .75rem; color: var(--muted); margin: 0 0 4px; letter-spacing: .1em; }
.promo p { margin: .3em 0; }
.ad-slot { margin: 20px 0; min-height: 90px; }
.tool-foot { border-top: 1px solid var(--line); margin-top: 20px; padding-top: 10px; }
.related h2 { border: 0; }
.site-footer { background: var(--surface); border-top: 1px solid var(--line); padding: 28px 0; margin-top: 24px; font-size: .9rem; }
.footer-cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; }
.footer-cols ul { list-style: none; padding: 0; margin: 0; }
.footer-cols li { margin: 4px 0; }
.footer-brand { font-weight: 700; margin: 0 0 4px; }
.footer-head { font-weight: 600; margin: 0 0 6px; }
.copyright { color: var(--muted); font-size: .8rem; margin: 20px 0 0; }
.sv-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; margin: 12px 0; }
.sv-card h3 { margin-top: 0; }
.sv-card ul { margin: .4em 0; }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; }
.kv dt { font-weight: 600; color: var(--muted); }
.kv dd { margin: 0; }
.badge { display: inline-block; font-size: .75rem; padding: 2px 8px; border-radius: 999px; background: var(--accent-soft); color: var(--text); margin-left: 6px; }
@media (max-width: 600px) {
  h1 { font-size: 1.4rem; }
  .hero h1 { font-size: 1.5rem; }
  .site-nav { gap: 10px; }
  .tool-body { padding: 14px; }
  .kv { grid-template-columns: 1fr; gap: 2px 0; }
}
.sc-sec { margin-top: 18px; }
.sc-sec h3 { margin: 0 0 6px; display: flex; align-items: baseline; gap: 10px; }
.sc-sec h3 a { font-weight: 400; }
.sc-sec table td:first-child { width: 2em; text-align: center; }
.subsidy-list { list-style: none; padding: 0; margin: 12px 0; }
.subsidy-list li a { display: block; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 16px; margin: 8px 0; text-decoration: none; color: var(--text); }
.subsidy-list li a:hover { border-color: var(--accent); }
.subsidy-list strong { display: block; font-size: 1rem; line-height: 1.5; }
.subsidy-list .meta { display: block; color: var(--muted); font-size: .85rem; margin-top: 2px; }
.subsidy-list .desc { display: block; color: var(--muted); font-size: .85rem; margin-top: 4px; }
.subsidy-list li[hidden] { display: none; }
.kv-table th { width: 8em; white-space: nowrap; }
.subsidy-detail h3 { font-size: 1rem; margin: 1.2em 0 .3em; }
.subsidy-detail p { margin: .3em 0; }
.pref-links a { display: inline-block; margin: 2px 6px 2px 0; }
.area-table td.num, .area-table th.num { text-align: right; white-space: nowrap; }
.area-table tbody tr:hover { background: var(--accent-soft); }
.yoy-up { color: var(--ok); } .yoy-down { color: var(--danger); }
.src-note { font-size: .8rem; color: var(--muted); border-top: 1px solid var(--line); padding-top: 8px; margin-top: 24px; }