:root{--ink:#1f2a37;--mut:#5b6773;--pink:#d9728c;--pinkbg:#fdeff3;--blue:#2b5f82;--bluebg:#e8f2fa;--line:#e3e8ee}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font:16px/1.75 system-ui,-apple-system,"Hiragino Sans","Noto Sans JP",sans-serif;color:var(--ink);background:linear-gradient(135deg,#f3f8fc,#fdf3f6) fixed}
a{color:var(--blue)}.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:#fff;padding:6px;z-index:9}
.top{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;padding:12px 5vw;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.brand{display:flex;gap:10px;align-items:center;text-decoration:none;color:var(--ink)}.brand small{display:block;font-size:11px;color:var(--mut);letter-spacing:.12em;text-transform:uppercase}
.top nav{display:flex;gap:16px;align-items:center;font-size:14px}.top nav a{text-decoration:none;color:var(--ink)}.lang{border:1px solid var(--blue);border-radius:99px;padding:2px 12px;color:var(--blue)!important}
main{max-width:980px;margin:0 auto;padding:24px 5vw 64px}
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center;padding:24px 0}
.eyebrow{font-size:12px;letter-spacing:.14em;color:var(--blue);font-weight:700;margin:0}
h1{font-size:clamp(28px,5vw,44px);line-height:1.2;margin:.3em 0}h2{font-size:22px;margin:1.6em 0 .5em}
.lead{font-size:17px;color:#33414f}.hero-art{width:100%;height:auto}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}
.card{display:flex;flex-direction:column;gap:4px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;text-decoration:none;color:var(--ink);transition:.15s}
.card:hover{border-color:var(--pink);transform:translateY(-2px);box-shadow:0 6px 18px rgba(217,114,140,.15)}
.code{align-self:flex-start;background:var(--bluebg);color:var(--blue);font-weight:700;font-size:12px;border-radius:6px;padding:1px 8px}.card small{color:var(--mut)}.go{color:var(--pink);font-size:13px;margin-top:6px}
.region h3{margin:1.2em 0 .5em;color:var(--mut);font-size:15px}
.check{background:var(--pinkbg);border-radius:14px;padding:6px 22px 14px}.check ol{margin:0;padding-left:1.3em}
.note{display:flex;gap:12px;align-items:center;color:var(--mut);font-size:14px;margin-top:24px}
.crumb{font-size:14px}.guide header{padding:6px 0}.guide section{background:#fff;border:1px solid var(--line);border-radius:14px;padding:4px 22px 14px;margin:14px 0}
.guide h2 span{display:inline-block;background:var(--pink);color:#fff;border-radius:8px;font-size:13px;padding:0 8px;margin-right:10px;vertical-align:2px}
.toc{background:var(--bluebg);border-radius:14px;padding:6px 22px 12px;margin:16px 0}.toc h2{font-size:16px}.toc ol{margin:0;padding-left:1.3em;columns:2}
.small{font-size:13px;color:var(--mut)}.sources ul{padding-left:1.2em}
.page{background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 26px 22px}
footer{text-align:center;color:var(--mut);font-size:13px;padding:24px 5vw 40px;border-top:1px solid var(--line);background:#fff}
@media(max-width:720px){.hero{grid-template-columns:1fr}.toc ol{columns:1}}