:root{color-scheme:light;--ink:#201c32;--muted:#625d70;--line:#e8e3ef;--purple:#6d3de8;--bg:#f8f6fc}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif}
a{color:#5330be}
a:hover{text-decoration:none}
.site-header{background:#fff;border-bottom:1px solid var(--line)}
.header-inner{max-width:1040px;margin:auto;padding:18px 24px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.brand{display:inline-flex;align-items:center;text-decoration:none}.brand img{width:174px;max-width:45vw;height:auto}
.header-nav,.footer-nav{display:flex;gap:18px;flex-wrap:wrap;font-size:.91rem}
.header-nav a,.footer-nav a{text-decoration:none;font-weight:650}
.header-nav a[aria-current="page"]{color:var(--ink);text-decoration:underline;text-decoration-color:var(--purple);text-decoration-thickness:2px;text-underline-offset:5px}
main{max-width:870px;margin:0 auto;padding:48px 24px 72px}
.eyebrow{margin:0 0 8px;color:var(--purple);font-weight:800;font-size:.79rem;letter-spacing:.13em;text-transform:uppercase}
h1{font-size:clamp(2rem,5vw,3rem);line-height:1.15;letter-spacing:-.035em;margin:0 0 12px}
.intro{font-size:1.08rem;color:var(--muted);max-width:720px;margin:0 0 8px}
.updated{font-size:.88rem;color:var(--muted);margin:0 0 28px}
.notice,.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px 26px;box-shadow:0 12px 35px rgba(46,25,83,.035)}
.notice{border-left:4px solid var(--purple);margin:24px 0}
.card{margin:18px 0}
h2{font-size:1.28rem;line-height:1.3;margin:0 0 12px;letter-spacing:-.015em}
h3{font-size:1.04rem;margin:16px 0 6px}
p{margin:0 0 13px}p:last-child{margin-bottom:0}
ul,ol{padding-left:23px;margin:8px 0 13px}li+li{margin-top:7px}
strong{font-weight:700}
.site-footer{border-top:1px solid var(--line);background:#fff}
.footer-inner{max-width:1040px;margin:auto;padding:26px 24px;color:var(--muted);font-size:.88rem;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
@media(max-width:600px){main{padding:36px 16px 56px}.header-inner{padding:16px}.card,.notice{padding:20px}.header-nav{gap:11px;font-size:.82rem}}