:root{--c-teal: #6CC1CC;--c-teal-dark: #17798A;--c-teal-ink: #0F3A42;--c-teal-pale: #F2FAFB;--c-teal-soft: #CFEDF1;--c-ink: #22272E;--c-muted: #4A5461;--c-line: #D5DDE0;--c-line-soft: #E3E8EB;--c-grid: #EEF3F4;--c-gray-bg: #F3F5F7;--c-bg: #FFFFFF;--c-foot: #22272E;--c-foot-sub: #B8C2CC;--font-sans: "IBM Plex Sans JP", "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;--font-mono: "IBM Plex Mono", "IBM Plex Sans JP", ui-monospace, monospace;--maxw: 1040px;--gutter: 16px;--radius: 0px}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.8;color:var(--c-ink);background:var(--c-bg);overflow-wrap:anywhere;line-break:strict}img,svg{max-width:100%;height:auto}a{color:var(--c-teal-dark);text-underline-offset:3px}a:hover{color:var(--c-teal-ink)}:focus-visible{outline:2px solid var(--c-teal-dark);outline-offset:2px}h1,h2,h3,h4{line-height:1.35;letter-spacing:-.005em;margin:0 0 .6em}h1{font-size:clamp(1.6rem,4.6vw,2.3rem);font-weight:700}h2{font-size:clamp(1.25rem,3.2vw,1.55rem);font-weight:700;margin-top:2.2em}h3{font-size:1.1rem;font-weight:700;margin-top:1.6em}p{margin:0 0 1em}ul,ol{padding-left:1.3em;margin:0 0 1em}li+li{margin-top:.25em}table{border-collapse:collapse;width:100%;margin:0 0 1.2em;font-size:.95rem}th,td{text-align:left;padding:.55em .75em;border-top:1px solid var(--c-line-soft);vertical-align:top}thead th{background:var(--c-gray-bg);font-size:.85rem;letter-spacing:.04em;color:var(--c-muted);font-weight:600;border-top:0}.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 1.2em;border:1px solid var(--c-line)}.table-wrap table{margin:0}.wrap{width:100%;max-width:calc(var(--maxw) + var(--gutter) * 2);margin:0 auto;padding:0 var(--gutter)}.grid-bg{background-color:var(--c-bg);background-image:repeating-linear-gradient(0deg,var(--c-grid) 0,var(--c-grid) 1px,transparent 1px,transparent 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li+li:before{content:"/";margin-right:4px;color:var(--c-line)}.crumbs a{color:var(--c-muted)}.page-head{padding:1.6rem 0 1.4rem;border-bottom:1px solid var(--c-line);margin-bottom:1.6rem}.page-head .lead{color:var(--c-muted);max-width:760px;margin:0}.updated{font-family:var(--font-mono);font-size:.75rem;color:var(--c-muted);margin-top:.8rem}.hero{padding:2.6rem 0 2.4rem}.hero-inner{display:grid;gap:1.6rem}.hero h1{font-size:clamp(1.8rem,6vw,2.7rem);margin-bottom:.5em}.hero p{color:var(--c-muted);max-width:640px}.tiles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.tile{padding:14px 12px;display:flex;flex-direction:column;gap:4px;background:var(--c-bg)}.tile .n{font-family:var(--font-mono);font-size:clamp(1.4rem,5vw,2rem);font-weight:600;line-height:1;color:var(--c-teal-dark)}.tile .l{font-size:.8rem;color:var(--c-muted);line-height:1.4}.grid3{display:grid;grid-template-columns:1fr;gap:10px}.card{padding:16px 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.f{font-family:var(--font-mono);font-size:.72rem;color:var(--c-teal-dark);font-weight:600;margin-left:6px}.ba th.b{background:var(--c-gray-bg);color:var(--c-muted)}.ba th.a{background:var(--c-teal-dark);color:#fff}.ba td.w{font-weight:700;white-space:nowrap}.ba td.a{background:var(--c-teal-pale)}.dot-list{list-style:none;padding:0}.dot-list li{display:flex;gap:10px}.dot-list li:before{content:"";width:6px;height:6px;background:var(--c-teal);margin-top:.75em;flex-shrink:0}.dl{display:grid;grid-template-columns:1fr;margin:0 0 1.4em;border-top:1px solid var(--c-line)}.dl>div{display:grid;grid-template-columns:1fr;padding:.7em 0;border-bottom:1px solid var(--c-line);gap:2px}.dl dt{font-size:.8rem;font-weight:600;color:var(--c-teal-dark)}.dl dd{margin:0}.note{font-size:.85rem;color:var(--c-muted)}.badge{display:inline-block;font-family:var(--font-mono);font-size:.7rem;font-weight:600;letter-spacing:.06em;padding:1px 8px;border:1px solid var(--c-teal-dark);color:var(--c-teal-dark);vertical-align:middle}.draft{display:inline-block;font-size:.72rem;font-weight:700;color:#8a5a00;background:#fff4d6;border:1px dashed #D9A400;padding:0 6px;margin-left:6px;vertical-align:middle;line-height:1.6}.callout{border-left:3px solid var(--c-teal);background:var(--c-teal-pale);padding:12px 16px;margin:0 0 1.2em}.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;font-weight:600;text-decoration:none;border:1px solid var(--c-teal-dark);background:var(--c-teal-dark);color:#fff;font-size:.95rem}.btn:hover{background:var(--c-teal-ink);border-color:var(--c-teal-ink);color:#fff}.btn.ghost{background:transparent;color:var(--c-teal-dark)}.btn.ghost:hover{background:var(--c-teal-pale);color:var(--c-teal-ink)}.btn-row{display:flex;flex-wrap:wrap;gap:10px}.cta{background:var(--c-foot);color:#fff;padding:28px 20px;margin-top:3rem;display:grid;gap:16px}.cta .tag{font-size:clamp(1.3rem,4vw,1.7rem);font-weight:700;margin:0;line-height:1.4}.cta .sub{color:var(--c-foot-sub);margin:0;font-size:.92rem}.cta .btn{background:var(--c-teal);border-color:var(--c-teal);color:var(--c-teal-ink)}.cta .btn:hover{background:#fff;border-color:#fff;color:var(--c-teal-ink)}.cta .btn.ghost{background:transparent;color:#fff;border-color:#6b7785}.news-list{list-style:none;padding:0;margin:0;border-top:1px solid var(--c-line)}.news-list li{margin:0;padding:14px 0;border-bottom:1px solid var(--c-line);display:grid;gap:2px}.news-list time{font-family:var(--font-mono);font-size:.8rem;color:var(--c-teal-dark)}.news-list a{font-weight:600;color:var(--c-ink);text-decoration:none}.news-list a:hover{text-decoration:underline}.faq-item{border-bottom:1px solid var(--c-line);padding:14px 0}.faq-item h3{margin:0 0 .4em;font-size:1.02rem;display:flex;gap:10px}.faq-item h3:before{content:"Q";font-family:var(--font-mono);color:var(--c-teal-dark)}.faq-item .a{padding-left:1.4em;color:var(--c-ink)}.faq-item .a>:last-child{margin-bottom:0}.site-footer{background:var(--c-foot);color:#e4e9ee;margin-top:0;padding:32px 0 24px;font-size:.88rem}.site-footer a{color:#e4e9ee}.site-footer .foot-grid{display:grid;gap:22px}.site-footer .tag{font-size:1.15rem;font-weight:700;color:#fff;margin:0 0 4px}.site-footer .sub{color:var(--c-foot-sub);margin:0;font-size:.82rem}.site-footer address{font-style:normal;line-height:1.8}.site-footer address b{color:#fff;font-size:1rem}.site-footer ul{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 16px}.site-footer li+li{margin-top:0}.site-footer .copy{border-top:1px solid #3A424C;margin-top:22px;padding-top:14px;color:var(--c-foot-sub);font-size:.75rem;font-family:var(--font-mono);display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px}.skip{position:absolute;left:-9999px}.skip:focus{left:8px;top:8px;background:#fff;padding:6px 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