:root{--bg:#0b0d0f;--bg2:#0f1214;--ink:#e8ecef;--muted:#8b959d;--line:#20262c;--acc:#8fe36b;--max:1100px}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Hiragino Kaku Gothic ProN","Hiragino Sans","Noto Sans JP","Yu Gothic",Meiryo,sans-serif;font-size:16px;line-height:1.85}
img{max-width:100%;height:auto;display:block}
a{color:var(--acc);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.35;margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.narrow{max-width:720px}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--acc)}
.skip{position:absolute;left:-9999px}
.skip:focus{left:10px;top:10px;background:var(--acc);color:#0b0d0f;padding:8px 12px;z-index:99}

.bar{border-bottom:1px solid var(--line);position:sticky;top:0;background:rgba(11,13,15,.94);backdrop-filter:blur(6px);z-index:40}
.bar-in{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:58px}
.mk{display:inline-flex;align-items:center;gap:8px;color:var(--ink);font-family:ui-monospace,Menlo,monospace;font-size:12.5px;letter-spacing:.1em;text-transform:uppercase}
.mk:hover{text-decoration:none;color:var(--acc)}
.nv{display:flex;gap:20px;align-items:center;font-family:ui-monospace,Menlo,monospace;font-size:11.5px;letter-spacing:.14em}
.nv a{color:var(--muted)}
.nv a:hover{color:var(--acc);text-decoration:none}
.nv a.ext{color:var(--ink);border:1px solid var(--line);padding:5px 10px}
.nv a.ext:hover{border-color:var(--acc)}
.bg{display:none;background:none;border:0;padding:10px;cursor:pointer}
.bg span{display:block;width:20px;height:1.5px;background:var(--ink);margin:5px 0}

.hero{padding:70px 0 54px;border-bottom:1px solid var(--line)}
.hmeta{display:flex;gap:18px;flex-wrap:wrap;font-family:ui-monospace,Menlo,monospace;font-size:10.5px;letter-spacing:.2em;color:var(--muted);margin-bottom:30px}
.hmeta span:first-child{color:var(--acc)}
.hero h1{font-size:clamp(30px,6vw,58px);line-height:1.18;letter-spacing:-.03em}
.hero h1 em{font-style:normal;color:var(--acc)}
.lead{color:var(--muted);margin-top:24px;max-width:40em;font-size:15.5px}
.acts{display:flex;gap:10px;flex-wrap:wrap;margin-top:30px}
.go{background:var(--acc);color:#0b0d0f;font-weight:700;font-size:14px;padding:12px 22px}
.go:hover{text-decoration:none;filter:brightness(1.08)}
.go2{border:1px solid var(--line);color:var(--ink);font-size:14px;padding:12px 22px}
.go2:hover{border-color:var(--acc);text-decoration:none}
.figs{display:flex;gap:48px;flex-wrap:wrap;margin:54px 0 0;padding-top:24px;border-top:1px solid var(--line)}
.figs dt{font-family:ui-monospace,Menlo,monospace;font-size:24px;color:var(--acc)}
.figs dd{margin:0;font-size:12px;color:var(--muted)}

.sec{padding:56px 0;border-bottom:1px solid var(--line)}
.sec.alt{background:var(--bg2)}
.h2{font-family:ui-monospace,Menlo,monospace;font-size:13px;letter-spacing:.22em;color:var(--ink);display:flex;gap:14px;align-items:baseline;margin-bottom:24px}
.h2 span{color:var(--acc)}
.hsub{color:var(--muted);font-size:13.5px;margin-bottom:22px}
.proto{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.pr{background:var(--bg);padding:24px 20px}
.pr b{display:block;font-size:14.5px;margin-bottom:9px}
.pr p{color:var(--muted);font-size:13px;line-height:1.8}

.led{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.led li{border-bottom:1px solid var(--line)}
.led a{display:grid;grid-template-columns:56px 108px 1fr 62px;gap:14px;align-items:baseline;padding:15px 4px;color:var(--ink);transition:.15s}
.led a:hover{background:#131a1e;text-decoration:none;padding-left:10px}
.led .n{font-family:ui-monospace,Menlo,monospace;font-size:11px;color:var(--acc)}
.led .cat{font-family:ui-monospace,Menlo,monospace;font-size:10.5px;letter-spacing:.1em;color:var(--muted)}
.led .ti{font-size:15px}
.led .dd{font-family:ui-monospace,Menlo,monospace;font-size:11px;color:var(--muted);text-align:right}
.led.big a{padding:18px 4px}
.led.big .ti{font-size:16.5px}

.two{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line)}
.two>div{background:var(--bg);padding:24px 22px}
.th{font-family:ui-monospace,Menlo,monospace;font-size:11px;letter-spacing:.16em;color:var(--acc);margin-bottom:14px}
.ul{list-style:none;padding:0;margin:0;font-size:14px;color:var(--muted)}
.ul li{padding:7px 0 7px 16px;position:relative;border-top:1px solid var(--line)}
.ul li:first-child{border-top:0}
.ul li::before{content:"—";position:absolute;left:0;color:var(--acc)}

.log{list-style:none;margin:0;padding:0;font-size:14px}
.log li{display:flex;gap:18px;padding:11px 0;border-top:1px solid var(--line);color:var(--muted)}
.log li .d{font-family:ui-monospace,Menlo,monospace;font-size:11px;color:var(--acc);white-space:nowrap;padding-top:3px}

.qa details{border-top:1px solid var(--line);padding:15px 0}
.qa details:last-child{border-bottom:1px solid var(--line)}
.qa summary{cursor:pointer;list-style:none;font-weight:600;font-size:15px}
.qa summary::-webkit-details-marker{display:none}
.qa summary::before{content:"+ ";color:var(--acc);font-family:ui-monospace,monospace}
.qa details[open] summary::before{content:"− "}
.qa p{color:var(--muted);font-size:14px;margin-top:10px}

.cta{background:var(--acc);color:#0b0d0f;padding:60px 0}
.cta-in{text-align:center}
.cta .mono{color:#0b0d0f;opacity:.6}
.cta h2{font-size:clamp(21px,3.4vw,28px);margin:12px 0 24px}
.go.dark{background:#0b0d0f;color:var(--acc);display:inline-block}
.go.dark:hover{text-decoration:none;filter:brightness(1.3)}

.ft{border-top:1px solid var(--line);padding:44px 0 34px;font-size:13px;background:var(--bg2)}
.fg{display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:30px}
.fdesc{color:var(--muted);font-size:12.5px;margin:12px 0;line-height:1.8}
.fyt{font-family:ui-monospace,Menlo,monospace;font-size:11.5px}
.ft nav h3{font-family:ui-monospace,Menlo,monospace;font-size:10px;letter-spacing:.18em;color:var(--muted);margin-bottom:10px;font-weight:400}
.ft nav a{display:block;color:var(--ink);font-size:12.5px;padding:3px 0}
.fl2{border-top:1px solid var(--line);margin-top:28px;padding-top:16px;font-size:11.5px;color:var(--muted)}
.fl2 p{margin:2px 0}
.cp{margin-top:10px}

.phead{padding:44px 0 6px}
.phead h1{font-size:clamp(24px,4vw,34px);margin-top:12px}
.lead2{color:var(--muted);margin-top:14px;font-size:15px;max-width:42em}
.body{padding:24px 0 46px}
.body h2{font-family:ui-monospace,Menlo,monospace;font-size:13px;letter-spacing:.1em;margin:34px 0 12px;padding-top:14px;border-top:1px solid var(--line);display:flex;gap:12px}
.body h2 span{color:var(--acc)}
.body p{color:#b9c2c9;font-size:15.5px;margin:12px 0}
.body .lead{color:var(--ink);font-size:16px}
.box{border:1px solid var(--line);background:var(--bg2);padding:16px 18px;margin:20px 0}
.box p{font-size:13.5px;margin:4px 0;color:var(--muted)}
.tbl{width:100%;border-collapse:collapse;font-size:13.5px;margin:18px 0}
.tbl th,.tbl td{border:1px solid var(--line);padding:9px 12px;text-align:left;vertical-align:top}
.tbl th{background:var(--bg2);color:var(--muted);font-weight:400;white-space:nowrap}
code{font-family:ui-monospace,monospace;font-size:12.5px;background:var(--bg2);border:1px solid var(--line);padding:1px 5px}
.upd{font-family:ui-monospace,Menlo,monospace;font-size:11px;color:var(--muted);margin-top:12px}
.src{font-size:12.5px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px;margin-top:28px}

.bc{font-family:ui-monospace,Menlo,monospace;font-size:10.5px;letter-spacing:.12em;color:var(--muted);padding:20px 0 0}
.bc a{color:var(--muted)}
.ahead{padding:14px 0 16px}
.ahead h1{font-size:clamp(23px,4vw,34px);margin-top:10px}
.catline{margin-bottom:6px}
.mtab{border-collapse:collapse;font-family:ui-monospace,Menlo,monospace;font-size:11px;color:var(--muted);margin-top:16px}
.mtab th,.mtab td{padding:3px 12px 3px 0;text-align:left;font-weight:400}
.mtab th{color:#5c666e}
.ahero{border:1px solid var(--line);margin:8px 0 22px}
.rel{border-top:1px solid var(--line);margin-top:34px;padding-top:20px}
.rel h3{font-family:ui-monospace,Menlo,monospace;font-size:11px;letter-spacing:.16em;color:var(--muted);margin-bottom:12px}
.rel ul{list-style:none;padding:0;margin:0}
.rel li{display:flex;justify-content:space-between;gap:14px;padding:10px 0;border-bottom:1px solid var(--line);font-size:14px}
.rel .dd{font-family:ui-monospace,monospace;font-size:11px;color:var(--muted)}
.back{margin:28px 0 46px;font-size:13.5px;font-family:ui-monospace,Menlo,monospace}
.nf{padding:80px 0 90px}
.nf h1{margin:12px 0 0;font-size:clamp(24px,4vw,34px)}

@media(max-width:860px){
.proto,.two,.fg{grid-template-columns:1fr}
.led a{grid-template-columns:42px 1fr 52px;row-gap:4px}
.led .cat{display:none}
.nv{display:none;position:absolute;top:100%;left:0;right:0;background:#0b0d0f;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:0;padding:4px 20px 16px}
.nv.open{display:flex}
.nv a{padding:11px 0;border-bottom:1px solid var(--line)}
.nv a.ext{border:0;padding-left:0}
.bg{display:block}
.hero{padding:40px 0 40px}
.figs{gap:26px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}