:root{--background:#f7f4ee;--surface:#fff;--surface-soft:#eef5f1;--text:#24312c;--muted:#6d7974;--primary:#3f6f64;--accent:#e89b55;--accent-soft:#fff0e2;--danger:#bd5447;--border:#e1e5e2;--shadow:0 22px 70px #2a373121}*{box-sizing:border-box}html{background:var(--background)}body{min-height:100vh;color:var(--text);background:radial-gradient(circle at 15% 8%,#e89b5524,transparent 30rem),radial-gradient(circle at 90% 85%,#3f6f6424,transparent 32rem),var(--background);margin:0;font-family:-apple-system,BlinkMacSystemFont,Hiragino Sans,Yu Gothic UI,sans-serif}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}h1,h2,h3,p{margin:0}h1{letter-spacing:-.035em;font-size:clamp(1.55rem,5vw,2rem);line-height:1.25}h2{font-size:1.04rem;line-height:1.35}h3{font-size:.98rem;line-height:1.4}.app-shell{align-content:center;place-items:center;gap:16px;width:100%;min-height:100vh;padding:24px 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