:root{--bg:#0b0d12;--panel:#131722;--card:#191e2b;--line:#262c3d;--ink:#e6e9f0;--mut:#98a0b3;--acc:#5ee0a4;--acc2:#7aa2ff;--code:#c9d1e6;--maxw:1100px;}
*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:"SF Mono","JetBrains Mono","Menlo","Noto Sans JP",monospace,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(11,13,18,.95);backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
.top{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{font-weight:800;color:#fff;font-size:1.4rem;letter-spacing:.02em}
.logo .dot{color:var(--acc)}
nav.main{display:flex;gap:20px;align-items:center;font-size:.94rem}
nav.main a{padding:6px 2px;border-bottom:2px solid transparent;color:#c2c9da}
nav.main a:hover,nav.main a.active{color:var(--acc);border-color:var(--acc)}
.nav-toggle{display:none;background:none;border:0;font-size:1.6rem;color:var(--ink);cursor:pointer}
.btn{display:inline-block;background:var(--acc);color:#0b0d12;padding:12px 28px;border-radius:10px;font-weight:700;transition:transform .15s}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(94,224,164,.3)}
.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 64px;text-align:left;position:relative;background:radial-gradient(ellipse at 20% -10%,#1b2a3f 0,transparent 50%),radial-gradient(ellipse at 90% 0%,#1a2438 0,transparent 45%),var(--bg)}
.hero .eyebrow{display:inline-block;color:var(--acc);font-weight:700;letter-spacing:.12em;font-size:.8rem;border:1px solid var(--line);padding:5px 14px;border-radius:999px;background:rgba(94,224,164,.06)}
.hero h1{font-size:clamp(2.2rem,5.8vw,3.6rem);line-height:1.05;font-weight:800;margin:18px 0;color:#fff}
.hero h1 em{color:var(--acc);font-style:normal}
.hero p{color:var(--mut);font-size:1.08rem;max-width:660px}
.hero .cta-row{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap}
.term{margin-top:44px;background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 20px 50px rgba(0,0,0,.5)}
.term .bar{display:flex;gap:7px;padding:12px 16px;background:#0f131c;border-bottom:1px solid var(--line)}
.term .bar i{width:12px;height:12px;border-radius:50%;display:inline-block}
.term pre{padding:22px;font-size:.9rem;color:var(--code);overflow-x:auto;line-height:1.7}
.term .k{color:var(--acc)}.term .c{color:#4d5a72}.term .s{color:var(--acc2)}
section.blk{padding:60px 0;border-top:1px solid var(--line)}
h2.sec{font-size:1.6rem;font-weight:800;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:14px;padding:26px}
.card h3{font-size:1.1rem;margin-bottom:8px;color:var(--acc)}
.card p{color:var(--mut);font-size:.93rem}
.card .tag{display:inline-block;background:rgba(94,224,164,.1);color:var(--acc);font-size:.76rem;font-weight:700;padding:3px 10px;border-radius:999px;margin-bottom:10px}
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:start}
.panel{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:26px}
.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:#141a26;border-left:4px solid var(--acc2);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,#1a2b56,#123b2a);border:1px solid var(--line);border-radius:16px;padding:44px 38px;text-align:center}
.cta-card h2{color:#fff;font-size:1.5rem;font-weight:800}
.cta-card p{color:var(--mut);margin:10px 0 24px}
.phead{padding:54px 0 30px;border-bottom:1px solid var(--line)}
.phead h1{font-size:clamp(1.9rem,4.4vw,2.9rem);color:#fff;font-weight:800;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(--acc)}
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:13px 16px;border-bottom:1px solid var(--line);text-align:left;color:var(--mut)}
.tb th{background:#0f131c;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(--acc);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:54px 0 46px}
}