:root{
  --bg:#0b1020;
  --card:#121a33;
  --card2:#0f1630;
  --text:#e9ecff;
  --muted:#a9b0d6;
  --accent:#7c5cff;
  --accent2:#2dd4bf;
  --border:rgba(255,255,255,.10);
  --shadow:0 20px 60px rgba(0,0,0,.35);
  --radius:18px;
  --max:1120px;
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", "Yu Gothic", "Meiryo", Arial, sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:var(--font);
  background:
    radial-gradient(900px 500px at 20% -10%, rgba(124,92,255,.35), transparent 60%),
    radial-gradient(700px 420px at 90% 10%, rgba(45,212,191,.25), transparent 55%),
    radial-gradient(800px 520px at 30% 90%, rgba(124,92,255,.18), transparent 60%),
    linear-gradient(180deg, var(--bg), #070a14 70%);
  color:var(--text);
  line-height:1.6;
}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible{outline:2px solid rgba(124,92,255,.8);outline-offset:3px;border-radius:10px}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}
.nav{
  position:sticky;top:0;z-index:50;
  backdrop-filter:saturate(180%) blur(12px);
  background:rgba(7,10,20,.55);
  border-bottom:1px solid var(--border);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.2px}
.logo{
  width:34px;
  height:34px;
  border-radius:10px;
  display:inline-block;
  object-fit:cover;
  box-shadow:0 10px 25px rgba(0,0,0,.14);
}
.nav-links{display:flex;gap:14px;align-items:center}
.nav-links a{opacity:.9;font-weight:600}
.nav-links a:hover{opacity:1}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 12px;border-radius:999px;
  border:1px solid var(--border);
  background:rgba(18,26,51,.55);
  color:var(--muted);
  font-size:13px;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:12px 16px;border-radius:12px;
  border:1px solid var(--border);
  background:rgba(18,26,51,.7);
  box-shadow:0 10px 30px rgba(0,0,0,.25);
  font-weight:800;
  transition:transform .08s ease, background .2s ease, border-color .2s ease;
  cursor:pointer;
}
.btn:hover{background:rgba(18,26,51,.9);border-color:rgba(255,255,255,.18)}
.btn:active{transform:translateY(1px)}
.btn.primary{
  background:linear-gradient(135deg,var(--accent), #5e8bff);
  border-color:rgba(255,255,255,.15);
}
.btn.primary:hover{filter:brightness(1.02)}
.btn.small{padding:9px 12px;border-radius:11px;font-weight:800}
.hero{padding:64px 0 26px}
.grid-2{display:grid;grid-template-columns:1.15fr .85fr;gap:26px;align-items:center}
@media (max-width: 980px){.grid-2{grid-template-columns:1fr;gap:18px}}
h1{font-size:48px;line-height:1.12;margin:14px 0 12px}
@media (max-width: 520px){h1{font-size:38px}}
.lead{color:var(--muted);font-size:18px;max-width:52ch}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:18px}
.card{
  background:linear-gradient(180deg, rgba(18,26,51,.92), rgba(15,22,48,.86));
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.hero-card{padding:18px}
.kpis{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:12px}
.kpi{padding:14px;border-radius:14px;border:1px solid var(--border);background:rgba(7,10,20,.35)}
.kpi b{display:block;font-size:16px}
.kpi span{color:var(--muted);font-size:13px}
.section{padding:26px 0}
.section h2{font-size:28px;margin:0 0 12px}
.section p{color:var(--muted);margin:0 0 10px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media (max-width: 980px){.cards{grid-template-columns:1fr}}
.feature{padding:16px}
.icon{
  width:40px;height:40px;border-radius:14px;
  background:rgba(124,92,255,.16);
  border:1px solid rgba(124,92,255,.28);
  display:grid;place-items:center;
  margin-bottom:10px;
}
.feature h3{margin:0 0 6px;font-size:18px}
.feature p{margin:0;color:var(--muted)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media (max-width: 980px){.steps{grid-template-columns:1fr}}
.step{padding:16px}
.step .num{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:10px;
  background:rgba(45,212,191,.14);
  border:1px solid rgba(45,212,191,.28);
  margin-bottom:10px;
  font-weight:900;
}
.split{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width: 980px){.split{grid-template-columns:1fr}}
.faq{padding:16px}
details{
  border:1px solid var(--border);
  border-radius:14px;
  padding:12px 14px;
  background:rgba(7,10,20,.25);
}
details+details{margin-top:10px}
summary{cursor:pointer;font-weight:800}
summary::-webkit-details-marker{display:none}
summary:after{content:"＋";float:right;opacity:.8}
details[open] summary:after{content:"－"}
.footer{
  padding:26px 0 36px;
  border-top:1px solid var(--border);
  margin-top:26px;
  color:var(--muted);
}
.footer a{opacity:.9}
.footer a:hover{opacity:1}
.note{font-size:13px;color:var(--muted)}
.lang{display:inline-flex;gap:10px;align-items:center}
.pill{padding:7px 10px;border-radius:999px;border:1px solid var(--border);background:rgba(7,10,20,.25);font-weight:800;font-size:13px}
.pill.active{background:rgba(124,92,255,.18);border-color:rgba(124,92,255,.30)}