:root{--navy:#07162d;--gold:#dcae55;--ink:#142037;--muted:#66748a;--paper:#f4f6f9;--white:#fff}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif;line-height:1.75}.shell{max-width:760px;margin:auto;min-height:100vh;background:#fff}.top{height:76px;padding:12px 20px;display:flex;align-items:center;gap:15px;border-bottom:1px solid #e8edf2}.back{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:#eef3f8;color:var(--navy);text-decoration:none;font-size:24px}.brand{font-weight:900;letter-spacing:.12em}.brand small{display:block;color:var(--muted);font-size:11px;letter-spacing:.1em}.hero{background:linear-gradient(135deg,var(--navy),#0c2a54);color:#fff;padding:42px 25px}.tag{display:inline-block;background:rgba(220,174,85,.16);color:#f0c979;border:1px solid rgba(220,174,85,.35);border-radius:99px;padding:5px 11px;font-size:12px;font-weight:900}.hero h1{margin:15px 0 7px;font-size:34px;line-height:1.25}.hero p{margin:0;color:#c0ccdb}.content{padding:28px 22px 42px}.intro{font-size:18px;font-weight:750}.box{background:#f6f8fb;border-radius:18px;padding:20px;margin:22px 0}.box h2{font-size:20px;margin:0 0 12px}.checks{list-style:none;padding:0;margin:0}.checks li{padding:10px 0;border-bottom:1px solid #e1e6ed}.checks li:last-child{border:0}.checks li:before{content:"✓";color:#a77723;font-weight:900;margin-right:10px}.note{border-left:4px solid var(--gold);background:#fff8e9;padding:14px 16px;margin:22px 0;font-size:14px}.cta{display:block;text-align:center;text-decoration:none;background:var(--gold);color:#17233a;border-radius:14px;padding:16px 18px;font-weight:900;font-size:17px}.cta:after{content:"  ›";font-size:22px}.pr{text-align:center;color:#7e8999;font-size:12px;margin-top:10px}.footlink{display:block;text-align:center;color:#53647b;margin:28px 0 0}.fine{font-size:12px;color:#7b8798;margin-top:26px}
@media(min-width:700px){.content{padding:38px 58px 60px}.hero{padding:55px 58px}.hero h1{font-size:42px}}