:root{--bg:#0a0e1c;--panel:#101731;--card:#141c38;--line:#243052;--ink:#e8ecfb;--mut:#98a3c8;--acc:#4c6ef5;--acc2:#7048e8;--teal:#22d3ee;--maxw:1100px;}
*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:"Hiragino Kaku Gothic ProN","Noto Sans JP",system-ui,sans-serif;line-height:1.75}
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}
header.site{position:sticky;top:0;z-index:50;background:rgba(10,14,28,.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.top{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{font-weight:900;color:#fff;font-size:1.45rem;letter-spacing:.01em}
.logo::first-letter{color:var(--acc)}
nav.main{display:flex;gap:20px;align-items:center;font-size:.94rem}
nav.main a{color:#c4cdf0;padding:6px 2px;border-bottom:2px solid transparent;font-weight:600}
nav.main a:hover,nav.main a.active{color:#fff;border-color:var(--acc)}
.nav-toggle{display:none;background:none;border:0;font-size:1.6rem;color:#fff;cursor:pointer}
.btn{display:inline-block;background:linear-gradient(90deg,var(--acc),var(--acc2));color:#fff;padding:12px 28px;border-radius:12px;font-weight:700;transition:transform .15s}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(76,110,245,.4)}
.btn.ghost{background:transparent;color:var(--acc);border:1.5px solid var(--acc)}
.btn.sm{padding:8px 16px;font-size:.85rem}
.hero{padding:84px 0 60px;text-align:center;background:radial-gradient(ellipse at 50% -20%,#2a2470 0,transparent 55%),radial-gradient(ellipse at 15% 20%,#0f2b56 0,transparent 45%),radial-gradient(ellipse at 90% 0%,#3a1a53 0,transparent 42%),var(--bg)}
.hero .eyebrow{display:inline-block;color:var(--teal);font-weight:800;letter-spacing:.2em;font-size:.78rem;border:1px solid var(--line);padding:5px 16px;border-radius:999px;background:rgba(34,211,238,.06)}
.hero h1{font-size:clamp(2.3rem,6vw,3.9rem);line-height:1.1;font-weight:900;margin:18px 0;color:#fff}
.hero h1 em{background:linear-gradient(90deg,var(--acc),var(--teal));-webkit-background-clip:text;background-clip:text;color:transparent;font-style:normal}
.hero p{color:var(--mut);font-size:1.08rem;max-width:640px;margin:0 auto}
.hero .cta-row{margin-top:32px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero .btn.ghost{background:transparent;color:#fff;border:1.5px solid #fff}
.chatdemo{margin:40px auto 0;max-width:560px;background:var(--panel);border:1px solid var(--line);border-radius:18px;overflow:hidden;text-align:left;box-shadow:0 24px 60px rgba(0,0,0,.5)}
.chatdemo .ch{padding:18px 22px;border-bottom:1px solid var(--line);font-size:.9rem;color:var(--mut)}
.chatdemo .ch b{color:var(--teal);display:block;margin-bottom:6px;font-size:.78rem;letter-spacing:.1em}
section.blk{padding:58px 0;border-top:1px solid var(--line)}
h2.sec{font-size:1.6rem;font-weight:900;margin-bottom:10px;color:#fff}
p.sec-sub{color:var(--mut);margin-bottom:30px;max-width:640px}
.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-radius:16px;padding:26px}
.card h3{font-size:1.1rem;margin-bottom:8px;color:var(--teal)}
.card p{color:var(--mut);font-size:.93rem}
.card .tag{display:inline-block;background:rgba(76,110,245,.14);color:#9db2ff;font-size:.76rem;font-weight:700;padding:3px 11px;border-radius:999px;margin-bottom:10px}
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:42px;align-items:start}
.panel{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px}
.pline{padding:12px 0;border-bottom:1px dashed var(--line);font-size:.94rem;color:var(--mut)}
.pline:last-child{border-bottom:0}.pline b{color:#fff;display:block}
.narrow{max-width:820px!important}
.note{background:#141a36;border-left:4px solid var(--teal);padding:16px 20px;border-radius:8px;color:var(--mut);font-size:.92rem;margin-top:26px}
.chips{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0}
.chips span{background:var(--card);border:1px solid var(--line);padding:7px 15px;border-radius:999px;color:var(--acc);font-weight:600;font-size:.88rem}
.cta-card{background:linear-gradient(120deg,#1b2464,#321a5e);border:1px solid var(--line);border-radius:18px;padding:44px 38px;text-align:center}
.cta-card h2{color:#fff;font-size:1.5rem;font-weight:900}
.cta-card p{color:var(--mut);margin:10px 0 24px}
.phead{padding:52px 0 28px;border-bottom:1px solid var(--line)}
.phead h1{font-size:clamp(1.9rem,4.4vw,2.9rem);color:#fff;font-weight:900;line-height:1.15}
.lede{margin-top:16px;max-width:700px;color:var(--mut);font-size:1.05rem}
.crumb{font-size:.85rem;color:var(--mut);margin-bottom:16px}.crumb a{color:var(--teal)}
table.tb{width:100%;border-collapse:collapse;font-size:.93rem;background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.tb th,.tb td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;color:var(--mut)}
.tb th{background:#101731;color:#fff;font-weight:700}
.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;color:var(--teal);list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq .a{padding:4px 22px 18px;color:var(--mut);font-size:.93rem}
footer.site{border-top:1px solid var(--line);margin-top:60px;padding:40px 0 34px;color:var(--mut);font-size:.88rem}
.ft{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
.ft nav{display:flex;gap:18px;flex-wrap:wrap}
@media(max-width:820px){
 .g3{grid-template-columns:1fr}.g2{grid-template-columns:1fr}.split{grid-template-columns: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:15px;border-bottom:1px solid var(--line);display:none}
 nav.main.open{display:flex}
 .hero{padding:56px 0 46px}
}