:root{color-scheme:light;--ink:#183344;--muted:#526675;--accent:#006a72;--line:#dbe6e9;--paper:#fff;--wash:#f3f7f8}
*{box-sizing:border-box}
body{margin:0;background:var(--wash);color:var(--ink);font-family:system-ui,-apple-system,"Segoe UI","Noto Sans JP",sans-serif;line-height:1.9}
a{color:var(--accent);text-underline-offset:.2em}
a:focus-visible{outline:3px solid #cf7d00;outline-offset:4px}
.site-header{max-width:1040px;margin:auto;padding:26px 32px;display:flex;align-items:center;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line)}
.site-header>a{color:var(--ink);font-weight:700;text-decoration:none;font-size:15px}
nav{display:flex;gap:20px;font-size:14px;white-space:nowrap}
main{max-width:860px;margin:0 auto;padding:58px 32px 32px}
.eyebrow{color:var(--accent);font-size:14px;font-weight:700;letter-spacing:.09em;margin:0 0 16px}
h1{font-size:clamp(30px,5vw,48px);line-height:1.45;letter-spacing:.01em;margin:0 0 22px}
.lead{font-size:18px;max-width:690px;color:var(--muted)}
.status{padding:22px 26px;border-left:4px solid var(--accent);background:#e6f2f2;margin:32px 0}
.status p{margin:6px 0 0;font-size:15px}
section{padding:28px 0;border-bottom:1px solid var(--line)}
h2{font-size:21px;margin:0 0 12px;line-height:1.5}
p{margin:12px 0}
.document h1{font-size:clamp(28px,4vw,38px)}
footer{max-width:860px;margin:auto;padding:24px 32px 40px;color:var(--muted);font-size:13px}
@media(max-width:620px){.site-header{align-items:flex-start;flex-direction:column;gap:12px;padding:20px}main{padding:36px 20px 20px}footer{padding:20px}nav{gap:18px}section{padding:24px 0}.status{padding:18px}}