:root{--cream:#fffaf1;--paper:#fffdf8;--ink:#27332f;--muted:#6e7874;--coral:#ed8e7c;--mint:#9ccdb9;--blue:#a9cce1;--yellow:#efd78e;--line:#e8e3d8;--brand-font:ui-rounded, "Arial Rounded MT Bold", "Microsoft YaHei", sans-serif;--body-font:Inter, "PingFang SC", "Microsoft YaHei", sans-serif;--timer-font:ui-monospace, "SFMono-Regular", Consolas, monospace}*{box-sizing:border-box}html{background:#e8ebe6}body{color:var(--ink);font-family:var(--body-font);background:var(--cream);margin:0}a{color:inherit;text-decoration:none}button,input{font:inherit}.app-shell{background:var(--cream);flex-direction:column;max-width:520px;min-height:100svh;margin:0 auto;display:flex;box-shadow:0 0 50px #27332f14}.page{flex:1;padding:24px 22px 32px}footer{color:var(--muted);text-align:center;letter-spacing:.08em;padding:16px 22px 24px;font-size:11px}.topbar{text-align:center;border-bottom:1px solid var(--line);z-index:10;background:color-mix(in srgb, var(--cream) 92%, 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