:root{--ink:#1a1a2e;--accent:#c8452c;--bg:#faf8f5;--card:#fff;--muted:#6b6b76}
*{box-sizing:border-box}
body{margin:0;font-family:"Hiragino Kaku Gothic ProN","Noto Sans JP",system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.75}
.wrap{max-width:880px;margin:0 auto;padding:0 20px}
header{border-bottom:1px solid #e5e0d8;background:var(--card)}
header .wrap{display:flex;align-items:center;height:60px}
.logo{font-weight:700;font-size:1.15rem}
.logo .en{color:var(--muted);font-weight:400;font-size:.85rem;margin-left:.4rem}
.hero{padding:56px 0 32px}
h1{font-size:1.9rem;line-height:1.5;margin:0 0 16px}
.lead{color:var(--muted);font-size:1.05rem;max-width:640px}
.cta{display:inline-block;margin-top:20px;background:var(--accent);color:#fff;text-decoration:none;padding:14px 28px;border-radius:6px;font-weight:700}
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;margin:24px 0}
.f{background:var(--card);border:1px solid #e5e0d8;border-radius:8px;padding:20px}
.f h2{font-size:1.05rem;margin:0 0 8px}
.f p{margin:0;font-size:.92rem;color:#3c3c48}
.how{margin:24px 0}
.how ol{padding-left:1.4em}
.notice{background:#f3ede4;border-radius:8px;padding:16px 20px;font-size:.9rem;margin:24px 0}
footer{border-top:1px solid #e5e0d8;padding:24px 20px 48px;font-size:.85rem;color:var(--muted)}
footer a{color:var(--accent)}