:root {
  --paper: #fbfaf6;
  --paper-deep: #f0eee6;
  --ink: #20262b;
  --muted: #676b6b;
  --line: #d5d1c8;
  --indigo: #17376f;
  --moss: #657447;
  --serif: "Shippori Mincho", "Yu Mincho", serif;
  --sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  --page: min(1390px, calc(100vw - 80px));
  color-scheme: light;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.9; -webkit-font-smoothing: antialiased; }
body::before { position: fixed; inset: 0; z-index: 20; pointer-events: none; content: ""; opacity: .025; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.78' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"); }
a { color: inherit; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 50; padding: 10px 16px; background: var(--ink); color: #fff; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
.site-header { width: var(--page); height: 98px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.brand { font-family: var(--serif); font-size: 28px; text-decoration: none; letter-spacing: -.02em; }
.site-header nav { display: flex; align-items: center; gap: 30px; }
.site-header nav a { font-size: 14px; text-decoration: none; }
.site-header .center-link { padding-bottom: 4px; border-bottom: 1px solid var(--ink); }
.hero { width: var(--page); min-height: 710px; margin: 0 auto; display: grid; grid-template-columns: .87fr 1.13fr; gap: 70px; align-items: center; padding: 72px 24px 96px; }
.hero h1 { margin: 0; font-family: var(--serif); font-size: clamp(57px, 5.2vw, 82px); font-weight: 500; line-height: 1.46; letter-spacing: .025em; }
.hero-copy > p:not(.note) { margin: 34px 0 38px; line-height: 2.1; letter-spacing: .03em; }
.primary-link { display: inline-flex; min-height: 68px; align-items: center; justify-content: center; padding: 17px 30px; background: var(--indigo); color: #fff; font-weight: 600; text-decoration: none; letter-spacing: .04em; transition: transform .2s ease, background .2s ease; }
.primary-link:hover, .primary-link:focus-visible { background: #102f65; transform: translateY(-2px); }
.note { margin: 12px 0 0; color: var(--muted); font-size: 12px; }
.timeline-preview { position: relative; min-height: 555px; padding: 34px 46px 34px 58px; background: #fffefa; border: 1px solid rgba(52,62,66,.17); box-shadow: 0 28px 70px rgba(38,42,40,.1); transform: rotate(1.2deg); }
.timeline-preview::before { position: absolute; inset: 12px; content: ""; border: 1px solid rgba(23,55,111,.1); pointer-events: none; }
.preview-head { display: flex; justify-content: space-between; margin-bottom: 38px; padding-bottom: 16px; border-bottom: 1px solid var(--line); color: var(--indigo); font-size: 12px; letter-spacing: .18em; }
.timeline-line { position: absolute; top: 118px; bottom: 78px; left: 124px; width: 1px; background: var(--indigo); }
.timeline-preview article { position: relative; display: grid; grid-template-columns: 95px 1fr; min-height: 115px; }
.timeline-preview article::before { position: absolute; left: 59px; top: 10px; width: 11px; height: 11px; content: ""; border: 2px solid var(--indigo); border-radius: 50%; background: #fffefa; }
.timeline-preview time { color: var(--indigo); font-family: var(--serif); font-size: 23px; }
.timeline-preview article span { color: var(--moss); font-size: 12px; letter-spacing: .15em; }
.timeline-preview article h2 { margin: 7px 0 0; font-family: var(--serif); font-size: 18px; font-weight: 500; line-height: 1.7; }
.preview-foot { margin-top: 8px; padding-top: 17px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; text-align: center; letter-spacing: .08em; }
.about { padding: 132px max(40px, calc((100vw - 1390px)/2 + 24px)); background: var(--paper-deep); }
.about-heading { display: grid; grid-template-columns: .4fr 1fr; align-items: end; margin-bottom: 70px; }
.about-heading > p { margin: 0 0 10px; color: var(--indigo); font-size: 13px; letter-spacing: .16em; }
.about h2, .privacy h2, .closing h2 { margin: 0; font-family: var(--serif); font-size: clamp(44px, 4.4vw, 68px); font-weight: 500; line-height: 1.45; }
.steps { margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.steps li { display: grid; grid-template-columns: 120px 1fr; gap: 30px; min-height: 150px; align-items: center; border-bottom: 1px solid var(--line); }
.steps li > span { color: var(--indigo); font-family: var(--serif); font-size: 28px; }
.steps h3 { margin: 0 0 8px; font-family: var(--serif); font-size: 29px; font-weight: 500; }
.steps p { max-width: 640px; margin: 0; color: var(--muted); }
.privacy { width: var(--page); margin: 0 auto; display: grid; grid-template-columns: .95fr 1.05fr; gap: 110px; padding: 140px 24px; }
.privacy > div > p { max-width: 570px; margin: 32px 0 0; color: var(--muted); line-height: 2.05; }
.privacy dl { margin: 0; border-top: 1px solid var(--line); }
.privacy dl > div { display: grid; grid-template-columns: 145px 1fr; gap: 24px; padding: 30px 0; border-bottom: 1px solid var(--line); }
.privacy dt { color: var(--indigo); font-family: var(--serif); font-size: 19px; }
.privacy dd { margin: 0; color: var(--muted); }
.closing { min-height: 420px; display: flex; align-items: center; justify-content: space-between; gap: 60px; padding: 80px max(40px, calc((100vw - 1390px)/2 + 24px)); background: var(--indigo); color: #fff; }
.closing .primary-link { background: #fff; color: var(--indigo); }
.site-footer { width: var(--page); min-height: 180px; margin: 0 auto; display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 60px; color: var(--muted); font-size: 12px; }
.site-footer > div p { margin: 8px 0 0; }
.site-footer > a { text-decoration: none; border-bottom: 1px solid var(--muted); }

@media (max-width: 900px) {
  :root { --page: calc(100vw - 40px); }
  .site-header nav a:not(.center-link) { display: none; }
  .hero { min-height: auto; grid-template-columns: 1fr; gap: 65px; padding: 80px 0 100px; }
  .hero h1 { font-size: clamp(50px, 11vw, 70px); }
  .timeline-preview { width: min(680px, 96%); margin: 0 auto; }
  .about { padding: 100px 20px; }
  .about-heading { grid-template-columns: 1fr; gap: 20px; }
  .privacy { grid-template-columns: 1fr; gap: 65px; padding: 110px 0; }
  .closing { display: grid; justify-items: start; padding: 80px 20px; }
  .site-footer { grid-template-columns: 1fr 1fr; gap: 24px; padding: 48px 0; }
  .site-footer > p { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  :root { --page: calc(100vw - 28px); }
  .site-header { height: 76px; }
  .brand { font-size: 21px; }
  .site-header .center-link { font-size: 12px; }
  .hero { padding-top: 58px; }
  .hero h1 { font-size: clamp(42px, 12vw, 56px); }
  .desktop-only { display: none; }
  .primary-link { width: 100%; }
  .timeline-preview { min-height: 520px; width: 100%; padding: 29px 24px 28px 36px; transform: none; }
  .timeline-line { left: 91px; }
  .timeline-preview article { grid-template-columns: 75px 1fr; min-height: 116px; }
  .timeline-preview article::before { left: 48px; }
  .timeline-preview time { font-size: 18px; }
  .timeline-preview article h2 { font-size: 15px; }
  .about h2, .privacy h2, .closing h2 { font-size: 39px; }
  .steps li { grid-template-columns: 58px 1fr; gap: 12px; padding: 26px 0; }
  .steps h3 { font-size: 23px; }
  .steps p { font-size: 14px; }
  .privacy dl > div { grid-template-columns: 1fr; gap: 6px; }
  .site-footer { grid-template-columns: 1fr; }
  .site-footer > p { grid-column: 1; }
}

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