:root{--navy:#062f63;--blue:#0756a5;--sky:#eaf6ff;--ink:#12263d;--muted:#51677d;--line:#d7e6f3;--orange:#d95313;--green:#087c49;--shadow:0 8px 24px #062f6310}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP","Yu Gothic",Meiryo,sans-serif;font-size:16px;line-height:1.8;padding-bottom:calc(84px + env(safe-area-inset-bottom));overflow-x:hidden}a{color:var(--blue);text-underline-offset:4px}img{display:block;max-width:100%;height:auto}button,input,textarea{font:inherit}h1,h2,h3,p,a,summary,dd{overflow-wrap:anywhere}h1,h2,h3{color:var(--navy);line-height:1.45}h1{font-size:clamp(1.8rem,3.7vw,3.1rem);margin:12px 0}h2{font-size:clamp(1.5rem,3vw,2.25rem);margin:0 0 22px}h3{font-size:1.12rem;margin:0 0 9px}p{margin:0 0 16px}.wrap{width:min(1080px,calc(100% - 32px));margin:auto}.narrow{max-width:820px}section{padding:64px 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