:root{--ink:#172c33;--muted:#51646b;--teal:#006f75;--teal-dark:#07545a;--paper:#f6f9f8;--line:#d9e4e1;--white:#fff;--focus:#e47f22;font-family:"Noto Sans JP",Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--white)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;line-height:1.72}a{color:var(--teal-dark);text-underline-offset:.17em}a:hover{text-decoration-thickness:2px}a:focus-visible{outline:3px solid var(--focus);outline-offset:3px}img{max-width:100%}.shell{width:min(1160px,calc(100% - 56px));margin:auto}.skip{position:absolute;top:-80px;left:16px;z-index:5;background:var(--white);padding:10px 16px}.skip:focus{top:12px}.masthead{border-bottom:1px solid var(--line);background:var(--white)}.masthead-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:94px}.brand{display:flex;align-items:center;gap:18px;text-decoration:none;color:var(--ink);font-size:.82rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.brand img{width:178px;height:auto}.brand span{padding-left:18px;border-left:1px solid var(--line)}.global-nav{display:flex;flex-wrap:wrap;gap:24px;font-size:.88rem;font-weight:600}.global-nav a{text-decoration:none}.hero{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(245px,.7fr);gap:64px;align-items:end;padding:76px 0 66px;border-bottom:1px solid var(--line)}.eyebrow{font-size:.78rem;letter-spacing:.15em;text-transform:uppercase;font-weight:800;color:var(--teal);margin:0 0 20px}.hero h1{font-size:clamp(2.8rem,6vw,5.5rem);line-height:1.06;letter-spacing:-.045em;margin:0 0 25px;max-width:12ch}.deck{font-size:clamp(1.08rem,1.6vw,1.34rem);max-width:38em;line-height:1.65;color:#33474d;margin:0}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}.button{display:inline-flex;align-items:center;gap:11px;border-radius:4px;padding:12px 19px;text-decoration:none;font-size:.9rem;font-weight:700}.button.primary{background:var(--teal-dark);color:white}.button.secondary{border:1px solid var(--teal-dark);color:var(--teal-dark)}.hero-status{padding:27px 25px;border:1px solid var(--line);border-top:4px solid var(--teal);background:var(--paper)}.hero-status strong{display:block;font-size:1rem}.hero-status p{font-size:.9rem;color:var(--muted);margin:11px 0 0}.hero-status b{color:#833d23}.status-dot{display:inline-block;width:10px;height:10px;border-radius:50%;background:var(--teal);margin-bottom:14px}.document-layout{display:grid;grid-template-columns:235px minmax(0,1fr);gap:72px;padding:52px 0 100px}.side-nav{align-self:start;position:sticky;top:20px}.side-nav nav{display:grid;gap:2px}.side-nav nav p{font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:800;margin:0 0 12px}.side-nav a{display:block;padding:9px 12px;text-decoration:none;border-left:3px solid transparent;font-size:.91rem}.side-nav a[aria-current]{border-color:var(--teal);background:#e8f4f1;font-weight:700}.side-note{font-size:.82rem;color:var(--muted);border-top:1px solid var(--line);padding-top:18px;margin-top:28px}.document{min-width:0;max-width:840px}.document>p:first-child{font-size:1.17rem;line-height:1.7;color:#33474d}.document h2{font-size:1.7rem;letter-spacing:-.02em;margin:48px 0 13px;padding-top:23px;border-top:1px solid var(--line)}.document h3{font-size:1.18rem;margin:32px 0 10px}.document p{margin:0 0 19px}.document ul,.document ol{padding-left:1.5em;margin:13px 0 26px}.document li{margin:8px 0}.document strong{color:#17383c}.document table{border-collapse:collapse;width:100%;font-size:.91rem;margin:22px 0 35px}.document th,.document td{border-bottom:1px solid var(--line);padding:13px 12px;vertical-align:top;text-align:left}.document th{background:#edf5f2;color:var(--teal-dark);font-weight:800}.document tr:nth-child(even) td{background:#fafcfb}.document code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.88em;overflow-wrap:anywhere;background:#eaf0ef;padding:.08em .28em}.document pre{background:#18323a;color:white;overflow:auto;padding:20px;border-radius:4px}.document pre code{background:none;color:inherit;padding:0}.document table{display:block;overflow-x:auto}.bridge-flow{display:flex;align-items:stretch;gap:10px;flex-wrap:wrap;margin:30px 0 38px}.bridge-flow span{flex:1 1 145px;background:#edf5f2;border-top:3px solid var(--teal);padding:18px 14px;font-size:.9rem;font-weight:700}.bridge-flow b{align-self:center;color:var(--teal);font-size:1.4rem}.footer{border-top:1px solid var(--line);background:var(--paper);font-size:.82rem;color:var(--muted)}.footer .shell{display:flex;flex-wrap:wrap;align-items:center;gap:12px 28px;padding:30px 0}.footer a{color:var(--muted)}
@media(max-width:900px){.hero{grid-template-columns:1fr;gap:28px;padding:52px 0}.hero-status{max-width:620px}.document-layout{grid-template-columns:1fr;gap:30px}.side-nav{position:static}.side-nav nav{display:flex;flex-wrap:wrap;gap:4px 9px}.side-nav nav p{width:100%}.side-nav a{border-left:0;border-bottom:3px solid transparent;padding:8px 10px}.side-nav a[aria-current]{border-color:var(--teal)}.side-note{display:none}}
@media(max-width:600px){.shell{width:calc(100% - 36px)}.masthead-inner{align-items:flex-start;flex-direction:column;padding:18px 0;gap:13px}.brand img{width:150px}.brand span{font-size:.72rem;padding-left:12px}.global-nav{gap:10px 18px;font-size:.8rem}.hero{padding:40px 0}.hero h1{font-size:clamp(2.5rem,12vw,3.6rem)}.hero-actions{flex-direction:column;align-items:stretch}.button{justify-content:center}.document-layout{padding:28px 0 70px}.document h2{font-size:1.4rem}.bridge-flow{display:grid;grid-template-columns:1fr}.bridge-flow b{text-align:center;line-height:1}.document th,.document td{padding:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}