:root{--bg:#070a0d;--bg2:#0c1219;--card:#111823;--line:#1f2a39;--ink:#e9f0f5;--mut:#8ba0b5;--grn:#00e09a;--purp:#9945ff;--cyan:#4fd8ff;--maxw:1140px}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN",system-ui,sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}img{max-width:100%;height:auto;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
ul.list{margin:14px 0 0 22px}ul.list li{margin-bottom:9px}
header.site{position:sticky;top:0;z-index:50;background:rgba(7,10,13,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.top{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{display:flex;align-items:center;gap:12px;font-weight:800}
.logo .mark{width:30px;height:30px;border-radius:50%;background:conic-gradient(from 0deg,var(--grn),var(--purp),var(--cyan),var(--grn));}
.logo .word{font-size:1.3rem;letter-spacing:.02em}
nav.main{display:flex;gap:24px;align-items:center;font-size:.94rem;font-weight:600}
nav.main a{padding:6px 2px;border-bottom:2px solid transparent;color:var(--mut)}
nav.main a:hover,nav.main a.active{color:var(--cyan);border-color:var(--cyan)}
.nav-toggle{display:none;background:none;border:0;font-size:1.7rem;color:#fff;cursor:pointer}
.btn{display:inline-block;background:linear-gradient(90deg,var(--purp),var(--grn));color:#04110a;font-weight:800;padding:13px 30px;border-radius:12px;transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(0,224,154,.25)}
.btn.ghost{background:transparent;color:var(--grn);border:1.5px solid var(--grn)}
.btn.sm{padding:8px 18px;font-size:.85rem}
.hero{padding:82px 0 64px;position:relative;overflow:hidden;background:
 radial-gradient(circle at 12% 20%, rgba(153,69,255,.2) 0, transparent 42%),
 radial-gradient(circle at 88% 12%, rgba(79,216,255,.18) 0, transparent 44%),
 radial-gradient(circle at 60% 100%, rgba(0,224,154,.1) 0, transparent 42%),
 var(--bg)}
.hero .wrap{position:relative}
.eyebrow{display:inline-block;color:var(--grn);font-weight:800;letter-spacing:.18em;font-size:.8rem;margin-bottom:16px;text-transform:uppercase}
.hero h1{font-size:clamp(2.3rem,5.8vw,4.1rem);line-height:1.1;font-weight:800}
.hero h1 .grad{background:linear-gradient(90deg,var(--grn),var(--cyan),var(--purp));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .sub{margin:22px 0 0;max-width:620px;color:var(--mut);font-size:1.06rem}
.hero .cta-row{margin-top:32px;display:flex;gap:14px;flex-wrap:wrap}
.hero .stats{margin-top:40px;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.sta{border:1px solid var(--line);background:var(--card);border-radius:14px;padding:20px}
.sta b{display:block;font-size:1.4rem;color:var(--grn);font-weight:800}
.sta span{color:var(--mut);font-size:.82rem}
section.blk{padding:58px 0}
section.blk.alt{background:linear-gradient(180deg,var(--bg2),var(--bg))}
.toolbar{display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;gap:10px;margin-bottom:28px}
h2.sec{font-size:1.55rem;font-weight:800;margin-bottom:10px}
h2.sec small{display:block;font-size:.8rem;color:var(--grn);font-weight:800;letter-spacing:.16em;text-transform:uppercase;margin-bottom:6px}
p.lead{color:var(--mut);max-width:660px}
.grid{display:grid;gap:18px}.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-top:3px solid var(--purp);border-radius:14px;padding:26px;transition:transform .15s,border-color .15s}
.card:hover{transform:translateY(-3px);border-color:var(--grn)}
.card h3{font-size:1.08rem;margin-bottom:9px;font-weight:700}
.card p{color:var(--mut);font-size:.94rem}
.card .ic{font-size:1.5rem;margin-bottom:12px}
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:46px;align-items:start}
.panel{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:26px}
.line{padding:12px 0;border-bottom:1px dashed var(--line);font-size:.94rem}
.line b{color:var(--cyan)}
.note{background:rgba(0,224,154,.06);border:1px solid var(--line);border-left:4px solid var(--grn);padding:16px 20px;border-radius:10px;color:var(--mut);font-size:.92rem;margin-top:26px}
table.tb{width:100%;border-collapse:collapse;font-size:.94rem;background:var(--card);border:1px solid var(--line)}
.tb th,.tb td{padding:13px 16px;border-bottom:1px solid var(--line);text-align:left}
.tb th{background:var(--bg2);color:var(--grn);font-weight:800}
.phead{padding:56px 0 30px;background:
 radial-gradient(circle at 12% 20%, rgba(153,69,255,.15) 0, transparent 40%),
 radial-gradient(circle at 90% 10%, rgba(0,224,154,.1) 0, transparent 40%), var(--bg)}
.phead h1{font-size:clamp(1.9rem,4.4vw,2.9rem);font-weight:800}
.phead h1 .grad{background:linear-gradient(90deg,var(--grn),var(--purp));-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{margin-top:14px;max-width:700px;color:var(--mut);font-size:1.03rem}
.crumb{font-size:.85rem;color:var(--mut);margin-bottom:16px}
.crumb a{color:var(--cyan)}
.faqwrap{display:flex;flex-direction:column;gap:12px}
.faq{background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.faq summary{padding:18px 22px;cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between;align-items:center;color:#fff}
.faq summary::after{content:"+";color:var(--grn);font-weight:800}
.faq[open] summary::after{content:"–"}
.faq summary::-webkit-details-marker{display:none}
.faq .a{padding:4px 22px 18px;color:var(--mut);font-size:.95rem}
.cta-band{background:linear-gradient(120deg,#0c1a14,#150d24,#08202b);border:1px solid var(--line);border-radius:18px;padding:46px 40px;text-align:center}
.cta-band h2{font-size:1.5rem;font-weight:800}
.cta-band p{color:var(--mut);margin:10px 0 26px}
footer.site{border-top:1px solid var(--line);padding:42px 0 34px;color:var(--mut);font-size:.9rem;margin-top:56px;background:var(--bg2)}
.ft{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
.ft nav{display:flex;gap:18px;flex-wrap:wrap}
.ft nav a:hover{color:var(--cyan)}
@media(max-width:900px){
 .g3,.g2{grid-template-columns:1fr}
 .split{grid-template-columns:1fr}
 .hero .stats{grid-template-columns:1fr 1fr}
 .nav-toggle{display:block}
 nav.main{position:fixed;top:66px;left:0;right:0;background:var(--bg);flex-direction:column;align-items:flex-start;padding:18px 24px;gap:16px;display:none;border-bottom:1px solid var(--line)}
 nav.main.open{display:flex}
}