:root{--ink:#202820;--muted:#626b61;--paper:#f5f4ef;--line:#d8ddd3;--green:#285c3a;--color-0:#e1ecd8;--color-1:#f7ebca;--color-2:#e1e8fa;--color-3:#f1ddd1;--color-4:#e7e2f7;--color-5:#dde9e6}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:35px}body{margin:0;color:var(--ink);background:var(--paper);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;line-height:1.8}a{color:inherit;text-underline-offset:4px}a:focus-visible,summary:focus-visible{outline:3px solid var(--green);outline-offset:5px}header,main,footer{max-width:1200px;margin:auto}header{padding:28px 36px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.brand{text-decoration:none;font-size:35px;font-weight:800;letter-spacing:-2px;line-height:1}.brand-dot{color:var(--green)}.brand-name{font-size:13px;letter-spacing:0;font-weight:600;margin-left:14px}nav{display:flex;gap:28px;font-size:13px}nav 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h2{font-size:22px;margin-top:40px}.break-url{overflow-wrap:anywhere;font-size:13px;color:var(--muted)}.skip{position:fixed;top:-100px;z-index:10;background:var(--ink);color:white;padding:15px}.skip:focus{top:5px}@media(max-width:850px){.grid{grid-template-columns:repeat(2,1fr)}.section-heading{display:block}.app-hero{gap:30px}.hero-screen{padding:25px}.brand-name{display:none}.hero{grid-template-columns:1fr 1fr}.app-mosaic{margin:0}.mosaic-icon{max-width:90px}.support-list{grid-template-columns:repeat(2,1fr)}}@media(max-width:600px){header{padding:22px}main{padding:0 22px}nav{gap:18px}.hero{display:flex;flex-direction:column;align-items:stretch;padding:45px 0 65px;gap:40px}.hero h1{font-size:34px}.app-mosaic{height:325px;max-width:350px;width:100%;margin:auto}.m4{top:208px}.m5{top:218px}.grid{grid-template-columns:1fr}.card{padding:25px}.card>p:not(.eyebrow){min-height:0}.section-heading h2{font-size:25px}section{padding:50px 0}.help{padding:28px 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