:root {
  --ink: #14233b;
  --ink-2: #31415c;
  --muted: #68758b;
  --paper: #f6f7f3;
  --white: #fff;
  --line: #dfe4ea;
  --blue: #3657f5;
  --blue-deep: #2542c9;
  --blue-pale: #e9edff;
  --lime: #c8f36a;
  --radius: 22px;
  --shadow: 0 20px 60px rgba(20, 35, 59, .09);
  --max: 1160px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif; font-size: 16px; line-height: 1.85; -webkit-font-smoothing: antialiased; }
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--lime); outline-offset: 4px; }
.skip-link { position: fixed; z-index: 200; top: 10px; left: 10px; padding: 8px 14px; border-radius: 8px; background: var(--ink); color: #fff; transform: translateY(-160%); }
.skip-link:focus { transform: none; }
.container { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }

.site-header { position: fixed; z-index: 100; top: 0; left: 0; width: 100%; border-bottom: 1px solid transparent; transition: background .25s, border-color .25s, box-shadow .25s; }
.site-header.scrolled { background: rgba(246, 247, 243, .93); border-color: rgba(20, 35, 59, .08); box-shadow: 0 8px 30px rgba(20, 35, 59, .05); backdrop-filter: blur(18px); }
.nav { height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; width: 157px; align-items: center; }
.brand img { width: 157px; aspect-ratio: 8 / 3; object-fit: contain; }
.nav-links { display: flex; align-items: center; gap: 28px; margin: 0; padding: 0; list-style: none; }
.nav-links > li > a { position: relative; padding: 12px 0; font-size: 13px; font-weight: 800; }
.nav-links > li > a:not(.nav-cta)::after { content: ""; position: absolute; bottom: 6px; left: 0; width: 100%; height: 2px; background: var(--blue); transform: scaleX(0); transform-origin: right; transition: transform .2s; }
.nav-links > li > a:hover::after, .nav-links > li > a[aria-current="page"]::after { transform: scaleX(1); transform-origin: left; }
.nav-cta { display: inline-flex; align-items: center; padding: 11px 18px !important; border-radius: 999px; background: var(--ink); color: #fff; }
.nav-cta::after { content: "↗"; margin-left: 8px; }
.menu-button { display: none; width: 46px; height: 46px; border: 1px solid var(--line); border-radius: 50%; background: #fff; color: var(--ink); cursor: pointer; }
.menu-button span { display: block; width: 18px; height: 2px; margin: 5px auto; background: currentColor; transition: .2s; }

.page-hero { position: relative; padding: 154px 0 84px; overflow: hidden; }
.page-hero::after { content: ""; position: absolute; top: -300px; right: -190px; width: 700px; height: 700px; border-radius: 47% 53% 41% 59%; background: var(--blue-pale); transform: rotate(17deg); }
.hero-inner { position: relative; z-index: 1; }
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; margin: 0 0 27px; color: var(--muted); font-size: 12px; font-weight: 700; }
.breadcrumb a:hover { color: var(--blue); }
.eyebrow { margin: 0 0 13px; color: var(--blue); font-size: 12px; font-weight: 900; letter-spacing: .17em; text-transform: uppercase; }
.page-hero h1 { max-width: 930px; margin: 0; font-size: clamp(42px, 6.6vw, 76px); line-height: 1.1; letter-spacing: -.06em; }
.hero-lead { max-width: 720px; margin: 25px 0 0; color: var(--ink-2); font-size: 17px; }
.meta-row { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 28px; }
.meta-chip { display: inline-flex; padding: 7px 12px; border: 1px solid #cfd6e0; border-radius: 999px; background: rgba(255,255,255,.6); color: var(--muted); font-size: 11px; font-weight: 800; }

.document-layout { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 76px; padding: 74px 0 112px; align-items: start; }
.doc-nav { position: sticky; top: 112px; }
.doc-nav-title { margin: 0 0 15px; color: var(--muted); font-size: 11px; font-weight: 900; letter-spacing: .15em; text-transform: uppercase; }
.doc-nav .doc-nav-title:not(:first-child) { margin-top: 28px; }
.doc-links { margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.doc-links a { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 5px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 13px; font-weight: 750; line-height: 1.45; }
.doc-links a::after { content: "→"; color: #a7b0bd; }
.doc-links a:hover, .doc-links a[aria-current="page"] { color: var(--blue); }
.doc-links a[aria-current="page"]::after { color: var(--blue); }
.doc-note { margin: 22px 0 0; padding: 16px; border-radius: 13px; background: var(--blue-pale); color: var(--muted); font-size: 11px; }

.document { min-width: 0; padding: 54px 58px; border: 1px solid var(--line); border-radius: 24px; background: #fff; box-shadow: var(--shadow); }
.document-intro { margin: 0 0 42px; padding: 23px 25px; border-radius: 15px; background: var(--blue-pale); color: var(--ink-2); }
.document-section { padding: 40px 0; border-top: 1px solid var(--line); scroll-margin-top: 104px; }
.document-section:first-of-type { border-top: 0; padding-top: 0; }
.section-number { display: block; margin-bottom: 9px; color: var(--blue); font-size: 11px; font-weight: 900; letter-spacing: .14em; }
.document-section h2 { margin: 0 0 19px; font-size: 26px; line-height: 1.42; letter-spacing: -.03em; }
.document-section h3 { margin: 29px 0 10px; font-size: 17px; line-height: 1.55; }
.document-section p { margin: 0 0 15px; color: var(--ink-2); font-size: 14px; }
.document-section ul { margin: 15px 0 20px; padding-left: 1.3em; color: var(--ink-2); font-size: 14px; }
.document-section li + li { margin-top: 9px; }
.summary-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 45px; }
.summary-card { min-height: 164px; padding: 22px; border: 1px solid var(--line); border-radius: 17px; background: var(--paper); }
.summary-card span { color: var(--blue); font-size: 11px; font-weight: 900; letter-spacing: .11em; }
.summary-card strong { display: block; margin-top: 27px; font-size: 17px; line-height: 1.55; }
.definition { padding: 22px; border-left: 4px solid var(--lime); border-radius: 0 14px 14px 0; background: #f9fbe9; }
.definition strong { display: block; margin-bottom: 7px; }
.definition p:last-child { margin-bottom: 0; }

.commerce-list { display: grid; grid-template-columns: minmax(150px, .43fr) minmax(0, 1fr); margin: 0; border-top: 1px solid var(--line); }
.commerce-list dt, .commerce-list dd { margin: 0; padding: 23px 0; border-bottom: 1px solid var(--line); }
.commerce-list dt { color: var(--muted); font-size: 13px; font-weight: 800; }
.commerce-list dd { padding-left: 30px; color: var(--ink-2); font-size: 14px; overflow-wrap: anywhere; }
.commerce-list a { color: var(--blue); font-weight: 800; text-decoration: underline; text-underline-offset: 3px; }

.policy-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 38px 0; }
.policy-card { padding: 25px; border: 1px solid var(--line); border-radius: 18px; background: var(--paper); }
.policy-card span { color: var(--blue); font-size: 11px; font-weight: 900; letter-spacing: .12em; }
.policy-card h2 { margin: 24px 0 11px; font-size: 20px; }
.policy-card p { margin: 0; color: var(--muted); font-size: 13px; }
.pdf-panel { display: flex; align-items: center; justify-content: space-between; gap: 28px; margin-top: 42px; padding: 28px; border-radius: 19px; background: var(--ink); color: #fff; }
.pdf-panel strong { display: block; font-size: 18px; }
.pdf-panel small { color: rgba(255,255,255,.6); }
.pdf-button { display: inline-flex; flex: 0 0 auto; align-items: center; gap: 9px; padding: 13px 20px; border-radius: 999px; background: var(--lime); color: var(--ink); font-size: 13px; font-weight: 900; }
.signature { margin-top: 45px; padding-top: 28px; border-top: 1px solid var(--line); color: var(--muted); text-align: right; font-size: 13px; }
.signature strong { display: block; color: var(--ink); font-size: 15px; }

.contact-banner { padding: 76px 0; background: var(--blue); color: #fff; }
.contact-banner-inner { display: flex; align-items: center; justify-content: space-between; gap: 50px; }
.contact-banner h2 { max-width: 720px; margin: 0; font-size: clamp(34px, 5vw, 55px); line-height: 1.16; letter-spacing: -.05em; }
.contact-button { display: inline-flex; flex: 0 0 auto; min-height: 54px; align-items: center; justify-content: center; gap: 10px; padding: 13px 23px; border-radius: 999px; background: var(--lime); color: var(--ink); font-weight: 900; }

.site-footer { padding: 45px 0 25px; background: #0d192d; color: #fff; }
.footer-top { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding-bottom: 38px; }
.footer-brand { display: inline-flex; width: 180px; height: 68px; align-items: center; }
.footer-brand img { width: 100%; aspect-ratio: 8 / 3; object-fit: contain; filter: grayscale(1) brightness(0) invert(1); }
.footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 21px; color: rgba(255,255,255,.68); font-size: 13px; }
.footer-links a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.1); color: rgba(255,255,255,.48); font-size: 11px; }

@media (max-width: 960px) {
  .menu-button { display: block; position: relative; z-index: 101; }
  .nav-links { position: fixed; inset: 0; z-index: -1; flex-direction: column; align-items: flex-start; justify-content: center; gap: 5px; padding: 100px 28px 50px; background: var(--paper); opacity: 0; visibility: hidden; transform: translateY(-12px); transition: .22s; }
  .nav-links.open { z-index: 99; opacity: 1; visibility: visible; transform: none; }
  .nav-links > li > a { display: block; font-size: 25px; }
  .nav-links .nav-cta { margin-top: 16px; font-size: 16px; }
  .menu-button[aria-expanded="true"] span:first-child { transform: translateY(7px) rotate(45deg); }
  .menu-button[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-button[aria-expanded="true"] span:last-child { transform: translateY(-7px) rotate(-45deg); }
  .document-layout { grid-template-columns: 1fr; gap: 44px; }
  .doc-nav { position: static; }
  .doc-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; border: 0; }
  .doc-links a { height: 100%; padding: 12px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
  .summary-grid { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .nav { height: 70px; }
  .brand, .brand img { width: 137px; }
  .page-hero { padding: 119px 0 62px; }
  .document-layout { padding: 54px 0 78px; }
  .doc-links { grid-template-columns: 1fr; }
  .document { padding: 30px 21px; border-radius: 18px; }
  .document-section { padding: 32px 0; }
  .document-section h2 { font-size: 22px; }
  .commerce-list { grid-template-columns: 1fr; }
  .commerce-list dt { padding-bottom: 6px; border: 0; }
  .commerce-list dd { padding: 0 0 20px; }
  .policy-grid { grid-template-columns: 1fr; }
  .pdf-panel, .contact-banner-inner, .footer-top, .footer-bottom { flex-direction: column; align-items: flex-start; }
  .pdf-button { width: 100%; justify-content: center; }
  .footer-links { justify-content: flex-start; }
}

@media print {
  .site-header, .page-hero::after, .doc-nav, .contact-banner, .site-footer { display: none; }
  .page-hero { padding: 20px 0; }
  .document-layout { display: block; padding: 0; }
  .document { padding: 0; border: 0; box-shadow: none; }
  .pdf-panel { border: 1px solid #999; background: #fff; color: #000; }
  .pdf-panel small { color: #555; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}