:root{--sky-50:#f3fbfe;--sky-100:#def3fb;--sky-300:#8fd2ea;--sky-600:#257fa8;--green-50:#f4f8ed;--green-100:#e5f0d6;--green-500:#6f9846;--green-700:#46682c;--wheat-100:#f5ead1;--wheat-300:#e5ca8f;--wheat-600:#9a722e;--ivory:#fffdf7;--paper:#fff;--ink:#243729;--muted:#63756a;--line:#d8e6dc;--shadow:0 28px 70px #3a5b4c24}*{box-sizing:border-box}html{background:var(--sky-50);min-width:320px}html,body{min-height:100%}body{color:var(--ink);background:var(--sky-50);-webkit-font-smoothing:antialiased;margin:0;font-family:Noto Sans JP,Yu Gothic,Hiragino Kaku Gothic ProN,system-ui,sans-serif}button,textarea{font:inherit}button{color:inherit}a{color:var(--sky-600)}.page-shell{background:radial-gradient(circle at 82% 8%,#ffffffe6 0 7%,#0000 7.3%),linear-gradient(#dff4fc 0%,#f5fbf8 48%,#f6f1df 100%);min-height:100dvh;padding:clamp(18px,3vw,42px);position:relative;overflow:hidden}.landscape{pointer-events:none;transform-origin:bottom;border-radius:50% 50% 0 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