:root{--ink:#14182b;--dusk:#1f2542;--lift:#2a3157;--mist:#a9b1d8;--glow:#9fb2ff;--text:#eef0fb;--ease:cubic-bezier(.2,1.35,.4,1)}*{box-sizing:border-box;margin:0}body{background:radial-gradient(1100px 600px at 20% -10%,#2d3566,transparent 60%),var(--ink);color:var(--text);font:15px/1.5 Segoe UI,system-ui,-apple-system,sans-serif;min-height:100vh}button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}button:focus-visible,textarea:focus-visible,input:focus-visible{outline:2px solid var(--glow);outline-offset:2px}.app{max-width:1040px;margin:0 auto;padding:20px 24px 48px}header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:28px}.logo{font:600 26px Georgia,serif;letter-spacing:-.02em;display:flex;align-items:center;gap:10px}.fold{width:18px;height:18px;background:#ffe9a8;border-radius:3px 3px 3px 12px;box-shadow:3px 3px #c2f0d8;transform:rotate(-8deg)}.tabs{position:relative;display:grid;grid-template-columns:1fr 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