:root{--bg:#f7fbfc;--surface:#fff;--ink:#172b4d;--text:#334155;--muted:#53647b;--primary:#087f68;--primary-hover:#066a57;--mint:#e8f8f2;--blue-soft:#eaf5ff;--line:#dde7ef;--error:#b42318;--radius-card:20px;--radius-control:12px;--content-max:1080px;--tool-max:760px;color-scheme:light;font-synthesis:none;text-rendering:optimizelegibility;font-family:-apple-system,BlinkMacSystemFont,Hiragino Kaku Gothic ProN,Hiragino Sans,Yu Gothic,Meiryo,sans-serif}*,:before,:after{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);min-width:0;color:var(--text);margin:0;font-size:16px;line-height:1.75}img,svg{max-width:100%}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}a{color:var(--primary);text-underline-offset:.2em}a:hover{color:var(--primary-hover)}:focus-visible{outline-offset:3px;outline:3px solid #2077d3}[hidden]{display:none!important}.visually-hidden{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;position:absolute!important}.shell{width:min(calc(100% - 40px), var(--content-max));margin-inline:auto}.content-narrow{max-width:780px}.skip-link{z-index:20;background:var(--ink);color:#fff;border-radius:8px;padding:9px 16px;position:absolute;top:-80px;left:12px}.skip-link:focus{color:#fff;top:8px}.site-header{z-index:2;background:#ffffffeb;border-bottom:1px solid #eaf0f3;position:relative}.site-header__inner{justify-content:space-between;align-items:center;gap:24px;min-height:76px;display:flex}.brand{color:var(--ink);flex:none;align-items:center;gap:9px;text-decoration:none;display:inline-flex}.brand img{width:40px;height:40px}.brand__name{letter-spacing:-.045em;font-size:1.27rem;font-weight:800;line-height:1}.brand__name span{color:var(--primary);letter-spacing:-.03em;margin-left:2px;font-size:.8em}.site-nav{align-items:center;gap:28px;display:flex}.site-nav a{color:var(--ink);font-size:.9rem;font-weight:700;text-decoration:none}.site-nav a:hover,.site-nav a:focus-visible{color:var(--primary)}.nav-mobile{display:none}.site-footer{background:#eaf2f5;border-top:1px solid #dce8ee;margin-top:96px}.site-footer__inner{grid-template-columns:1fr 1.3fr;gap:20px 60px;padding-block:48px 30px;display:grid}.site-footer__identity p{color:var(--muted);margin:10px 0 0;font-size:.875rem}.brand--footer img{width:32px;height:32px}.brand--footer .brand__name{font-size:1.06rem}.footer-links{flex-wrap:wrap;place-content:flex-start flex-end;align-items:flex-start;gap:8px 24px;display:flex}.footer-links a{color:var(--text);font-size:.875rem;text-decoration:none}.footer-links a:hover{text-decoration:underline}.site-footer small{color:var(--muted);font-size:.8rem}.page-hero{background:linear-gradient(160deg, var(--blue-soft), var(--bg) 76%);padding:54px 0 38px}.page-hero .eyebrow{color:var(--primary);letter-spacing:.08em;margin:0 0 7px;font-size:.875rem;font-weight:800}.page-hero h1{color:var(--ink);letter-spacing:-.045em;margin:0;font-size:clamp(2rem,5vw,2.8rem);line-height:1.35}.page-hero p:last-child{max-width:720px;color:var(--muted);margin:16px 0 0}.article{border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;max-width:780px;margin:40px auto 80px;padding:40px 52px 52px;box-shadow:0 12px 38px #172b4d0a}.article h2{color:var(--ink);margin:2.2em 0 .65em;font-size:1.45rem;line-height:1.4}.article h2:first-child{margin-top:0}.article h3{color:var(--ink);margin-top:1.8em;font-size:1.1rem}.article p,.article li{line-height:1.9}.article ul,.article ol{padding-left:1.4em}.article li+li{margin-top:.4em}.article .note{background:var(--blue-soft);border-radius:12px;padding:18px 20px}.article .action-link{background:var(--primary);color:#fff;border-radius:10px;align-items:center;min-height:44px;margin-top:20px;padding:10px 18px;font-weight:700;text-decoration:none;display:inline-flex}.article .action-link:hover{background:var(--primary-hover)}@media (width<=650px){.shell{width:min(calc(100% - 28px), var(--content-max))}.site-header__inner{gap:10px;min-height:66px}.brand img{width:35px;height:35px}.brand__name{font-size:1.13rem}.site-nav{gap:12px}.site-nav a{white-space:nowrap;font-size:.78rem}.nav-desktop{display:none}.nav-mobile{display:inline}.site-footer{margin-top:64px}.site-footer__inner{padding-block:36px 30px;display:block}.footer-links{justify-content:flex-start;gap:8px 18px;margin-block:25px 20px}.page-hero{padding:38px 0 30px}.article{margin-block:24px 56px;padding:28px 20px 34px}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}