:root { --ink:#17212b; --muted:#56616d; --line:#d9dee3; --navy:#153247; --green:#1f6b55; --soft:#f4f6f7; }
*, *::before, *::after { box-sizing:border-box; }
body { margin:0; color:var(--ink); background:#fff; font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif; font-size:16px; line-height:1.7; letter-spacing:0; }
a { color:#165640; text-underline-offset:3px; }
a:focus-visible { outline:3px solid #005fcc; outline-offset:3px; }
.site-header { background:var(--navy); color:#fff; }
.header-inner, .container, .footer-inner { width:min(calc(100% - 2rem),880px); margin-inline:auto; }
.header-inner { min-height:68px; display:flex; align-items:center; justify-content:space-between; gap:1rem; }
.brand, .back { color:#fff; text-decoration:none; }
.brand { font-weight:800; font-size:1.1rem; }
.back { font-size:.9rem; }
main { padding:clamp(3rem,7vw,5rem) 0; }
h1, h2 { line-height:1.2; letter-spacing:0; }
h1 { margin:0 0 .6rem; font-size:clamp(2rem,6vw,3.25rem); }
h2 { margin:2.5rem 0 .7rem; font-size:1.35rem; }
h3 { margin:1.5rem 0 .5rem; font-size:1.05rem; }
p { margin:0 0 1rem; }
ul { margin:0 0 1rem; padding-left:1.35rem; }
li { margin:.35rem 0; }
.updated { margin-bottom:2rem; color:var(--muted); font-size:.88rem; }
.notice { margin:2rem 0; padding:1.2rem 1.35rem; background:var(--soft); border-left:4px solid var(--green); }
.notice p:last-child { margin-bottom:0; }
.operator { padding:1.25rem; border:1px solid var(--line); background:#fff; font-style:normal; }
.button { display:inline-flex; min-height:44px; align-items:center; padding:.65rem 1rem; border-radius:4px; background:var(--green); color:#fff; font-weight:750; text-decoration:none; }
.site-footer { padding:2.5rem 0; border-top:1px solid var(--line); background:var(--soft); color:var(--muted); font-size:.88rem; }
.site-footer nav { display:flex; flex-wrap:wrap; gap:.5rem 1.25rem; margin-bottom:1rem; }
.site-footer p:last-child { margin-bottom:0; }
@media (max-width:560px) { .header-inner, .container, .footer-inner { width:min(calc(100% - 1.25rem),880px); } .header-inner { min-height:60px; } }