:root{
  --bg:#0b1020; --bg2:#0f1630; --card:#141d3a; --ink:#e8edf7; --muted:#9aa7c7;
  --line:#26315a; --accent:#5b8cff; --accent2:#7ce0c3; --warn:#ffd166;
  --maxw:920px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Noto Sans JP",
  "Segoe UI",Roboto,sans-serif; color:var(--ink); line-height:1.75;
  background:radial-gradient(1200px 600px at 70% -10%,#1a2348,transparent),
             linear-gradient(180deg,var(--bg),var(--bg2));
  background-color:var(--bg);
  background-attachment:fixed;
}
a{color:var(--accent); text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw); margin:0 auto; padding:0 22px}
header.site{padding:22px 0; border-bottom:1px solid var(--line)}
header.site .wrap{display:flex; align-items:center; justify-content:space-between; gap:16px}
.brand{display:flex; align-items:center; gap:12px; font-weight:700; letter-spacing:.2px}
.logo{width:34px;height:34px;border-radius:9px;
  background:linear-gradient(135deg,var(--accent),var(--accent2)); display:grid; place-items:center;
  color:#0b1020; font-weight:800}
nav a{color:var(--muted); margin-left:18px; font-size:14px}
.hero{padding:78px 0 54px}
.tag{display:inline-block; font-size:13px; color:var(--accent2); border:1px solid var(--line);
  padding:6px 12px; border-radius:999px; background:rgba(124,224,195,.06)}
h1{font-size:40px; line-height:1.25; margin:18px 0 14px; letter-spacing:.2px}
.lead{font-size:18px; color:var(--muted); max-width:680px}
.cta{margin-top:28px; display:flex; gap:12px; flex-wrap:wrap}
.btn{display:inline-block; padding:12px 20px; border-radius:11px; font-weight:600; font-size:15px}
.btn.primary{background:linear-gradient(135deg,var(--accent),#6f78ff); color:#fff}
.btn.ghost{border:1px solid var(--line); color:var(--ink)}
section{padding:40px 0; border-top:1px solid var(--line)}
h2{font-size:24px; margin:0 0 18px}
h3{font-size:16px; margin:0 0 6px}
.grid{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
.card{background:var(--card); border:1px solid var(--line); border-radius:14px; padding:20px}
.card p{color:var(--muted); font-size:14px; margin:.4em 0 0}
.steps{display:grid; grid-template-columns:repeat(4,1fr); gap:14px}
.step .n{width:30px;height:30px;border-radius:8px;background:var(--bg2);border:1px solid var(--line);
  display:grid;place-items:center;color:var(--accent2);font-weight:700;margin-bottom:10px}
.muted{color:var(--muted)}
table{width:100%; border-collapse:collapse; font-size:14px; margin-top:8px}
th,td{text-align:left; padding:10px 12px; border-bottom:1px solid var(--line); vertical-align:top}
th{color:var(--muted); font-weight:600}
.pill{display:inline-block; font-size:12px; padding:2px 9px; border-radius:999px; border:1px solid var(--line); color:var(--accent2)}
.legal{max-width:760px}
.legal h2{font-size:20px; margin-top:34px}
.legal h3{font-size:15px; margin-top:20px}
.legal p,.legal li{color:#cdd6ee; font-size:15px}
.legal table td,.legal table th{color:#cdd6ee}
footer.site{padding:34px 0 60px; border-top:1px solid var(--line); color:var(--muted); font-size:14px}
footer.site .row{display:flex; justify-content:space-between; gap:20px; flex-wrap:wrap}
footer.site a{color:var(--muted)}
@media(max-width:720px){
  h1{font-size:30px}.grid{grid-template-columns:1fr}.steps{grid-template-columns:1fr 1fr}
  nav{display:none}
}