:root {
  --paper: #fdfbf7; --surface: #ffffff; --ink: #2b2320; --ink-soft: #746357; --ink-faint: #9c8d81;
  --coral: #e2724a; --coral-deep: #b8552f; --coral-wash: #fbe9e1; --line: #ecdfd3; --line-strong: #ddccbc;
}
@media (prefers-color-scheme: dark) {
  :root { --paper: #201b18; --surface: #2a2420; --ink: #f3ece5; --ink-soft: #c3b3a6; --ink-faint: #8d7c70;
    --coral: #ef9670; --coral-deep: #f2a683; --coral-wash: #3a2a22; --line: #3c332c; --line-strong: #4a3f36; }
}
* { box-sizing: border-box; }
html { color-scheme: light dark; }
body { margin: 0; background: var(--paper); color: var(--ink);
  font-family: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;
  line-height: 1.9; -webkit-font-smoothing: antialiased; }
a { color: var(--coral-deep); text-underline-offset: 2px; }
a:hover { color: var(--coral); }
a:focus-visible { outline: 2px solid var(--coral-deep); outline-offset: 2px; border-radius: 3px; }
h1, h2, h3 { font-family: "Shippori Mincho", "Hiragino Mincho ProN", serif; text-wrap: balance; color: var(--ink); }

/* サイト共通ヘッダー */
.site-head { border-bottom: 1px solid var(--line); background: var(--surface); }
.site-head .in { max-width: 960px; margin: 0 auto; padding: 14px 24px; display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.brand { font-family: "Shippori Mincho", serif; font-size: 1.15rem; color: var(--coral-deep); text-decoration: none; font-weight: 600; }
.site-nav { display: flex; gap: 18px; font-size: 0.88rem; margin-left: auto; }
.site-nav a { color: var(--ink-soft); text-decoration: none; }
.site-nav a:hover, .site-nav a[aria-current] { color: var(--coral-deep); }

.frame { display: grid; grid-template-columns: 220px minmax(0, 700px); justify-content: center; gap: 56px; max-width: 1040px; margin: 0 auto; padding: 56px 24px 96px; }
@media (max-width: 880px) { .frame { grid-template-columns: minmax(0, 700px); } .toc { display: none; } }
.toc { position: sticky; top: 24px; align-self: start; font-size: 0.82rem; }
.toc-doc { color: var(--ink-soft); margin: 0 0 18px; }
.toc ol { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--line); }
.toc a { display: block; padding: 7px 0 7px 16px; margin-left: -1px; border-left: 1px solid transparent; color: var(--ink-soft); text-decoration: none; }
.toc a:hover { color: var(--coral-deep); border-left-color: var(--coral); }
.toc-num { font-variant-numeric: tabular-nums; color: var(--ink-faint); margin-right: 8px; }

main { min-width: 0; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 0.74rem; letter-spacing: 0.16em; color: var(--coral-deep); margin-bottom: 14px; }
.eyebrow::before { content: ""; width: 22px; height: 1px; background: var(--coral); }
h1.doc-title { font-size: clamp(1.7rem, 4vw, 2.35rem); font-weight: 600; line-height: 1.4; margin: 0 0 18px; }
.doc-meta { display: flex; flex-wrap: wrap; gap: 6px 22px; font-size: 0.86rem; color: var(--ink-soft); padding-top: 18px; border-top: 1px solid var(--line); margin: 0; }
.doc-meta dt { display: inline; color: var(--ink-faint); } .doc-meta dd { display: inline; margin: 0; } .doc-meta div { white-space: nowrap; }
.lede { color: var(--ink-soft); font-size: 0.98rem; margin: 22px 0 0; max-width: 40em; }
header.doc-head { margin-bottom: 48px; }
section.article { padding: 40px 0; border-top: 1px solid var(--line); scroll-margin-top: 32px; }
section.article:first-of-type { padding-top: 0; border-top: none; }
.article-head { display: flex; align-items: baseline; gap: 14px; margin: 0 0 18px; }
.article-no { font-family: "Shippori Mincho", serif; font-size: 0.95rem; color: var(--coral); white-space: nowrap; }
h2.article-title { font-size: 1.28rem; font-weight: 600; margin: 0; }
.article p { margin: 0 0 14px; max-width: 40em; } .article p:last-child { margin-bottom: 0; }
.article ul, .article ol { margin: 0 0 16px; padding-left: 1.3em; max-width: 40em; }
.article li { margin: 0 0 8px; }
.data-table { border-collapse: collapse; width: 100%; max-width: 40em; margin: 4px 0 20px; font-size: 0.92rem; }
.data-table th, .data-table td { text-align: left; padding: 10px 14px 10px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.data-table th { color: var(--ink-faint); font-weight: 500; font-size: 0.78rem; letter-spacing: 0.06em; }
.data-table td:first-child { white-space: nowrap; padding-right: 20px; }
.data-table td:last-child { color: var(--ink-soft); }
.service-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; margin: 4px 0 20px; }
.service-card { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; }
.service-card .name { font-weight: 700; font-size: 0.94rem; margin-bottom: 4px; }
.service-card .role { font-size: 0.83rem; color: var(--ink-soft); margin-bottom: 8px; line-height: 1.65; }
.service-card a { font-size: 0.8rem; }
.note { background: var(--coral-wash); border-left: 3px solid var(--coral); border-radius: 0 8px 8px 0; padding: 12px 16px; font-size: 0.88rem; color: var(--ink-soft); max-width: 40em; margin: 4px 0 20px; }
.note strong { color: var(--ink); }
.contact-card { background: var(--surface); border: 1px solid var(--line-strong); border-radius: 14px; padding: 28px 30px; max-width: 40em; }
.contact-card .op-name { font-family: "Shippori Mincho", serif; font-size: 1.15rem; margin-bottom: 6px; }
.contact-card dl { display: grid; grid-template-columns: auto 1fr; gap: 6px 16px; margin: 16px 0 0; font-size: 0.92rem; }
.contact-card dt { color: var(--ink-faint); } .contact-card dd { margin: 0; }
footer.doc-foot { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 0.8rem; color: var(--ink-faint); display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* トップページ */
.hero { max-width: 960px; margin: 0 auto; padding: 72px 24px 40px; }
.hero h1 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 600; line-height: 1.35; margin: 0 0 14px; }
.hero .tag { color: var(--ink-soft); font-size: 1.05rem; max-width: 34em; margin: 0 0 26px; }
.hero .cta { display: inline-block; background: var(--coral); color: #fff; text-decoration: none; padding: 12px 22px; border-radius: 999px; font-weight: 700; }
.hero .cta:hover { background: var(--coral-deep); color: #fff; }
.hero .sub { font-size: 0.86rem; color: var(--ink-faint); margin-top: 10px; }
.features { max-width: 960px; margin: 0 auto; padding: 0 24px 64px; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }
.feature { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 20px 22px; }
.feature h3 { margin: 0 0 6px; font-size: 1.05rem; }
.feature p { margin: 0; color: var(--ink-soft); font-size: 0.92rem; }
.legal-links { max-width: 960px; margin: 0 auto; padding: 0 24px 80px; font-size: 0.9rem; color: var(--ink-soft); }
.legal-links a { margin-right: 18px; }