:root{--bg:#07090d;--panel:#11151b;--text:#f5f7fa;--muted:#aab2bf;--accent:#e83232;--line:#252b35}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;line-height:1.8}a{color:inherit;text-decoration:none}.wrap{width:min(960px,92%);margin:auto}header{position:sticky;top:0;z-index:10;border-bottom:1px solid var(--line);background:rgba(7,9,13,.94);backdrop-filter:blur(10px)}.nav{padding:14px 0;display:flex;justify-content:space-between;align-items:center;gap:12px}.brand{font-weight:900;font-size:20px}.line{background:var(--accent);padding:10px 14px;border-radius:999px;font-weight:900;white-space:nowrap}.crumb{color:var(--muted);font-size:14px;padding-top:32px}.hero{padding:30px 0 26px}h1{font-size:clamp(34px,7vw,60px);line-height:1.14;margin:10px 0 18px;letter-spacing:-.02em}h2{font-size:clamp(26px,4vw,34px);line-height:1.3;margin:52px 0 14px}.lead{font-size:19px;color:#d5dae2}.cta{display:inline-block;background:var(--accent);padding:15px 20px;border-radius:12px;font-weight:900;margin-top:12px}.box{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:24px;margin:18px 0}.grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:22px}.card h3{margin:0 0 8px}.muted{color:var(--muted)}.links{display:flex;flex-wrap:wrap;gap:10px}.links a{background:#151a22;border:1px solid var(--line);border-radius:999px;padding:8px 12px}.notice{border-left:4px solid var(--accent);padding:16px 18px;background:#11151b;border-radius:10px;color:#d5dae2}.faq details{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin:12px 0}.faq summary{font-weight:800;cursor:pointer}footer{border-top:1px solid var(--line);margin-top:60px;padding:28px 0;color:#8f98a6}.floating{position:fixed;right:16px;bottom:16px;z-index:20;background:var(--accent);padding:14px 17px;border-radius:999px;font-weight:900;box-shadow:0 10px 30px rgba(0,0,0,.4)}@media(max-width:700px){.grid,.grid3{grid-template-columns:1fr}.brand{font-size:18px}.line{font-size:13px;padding:9px 12px}}