:root{--font:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--bg:#f0f4f8;--surface:#fff;--border:#dde5ef;--accent:#4f46e5;--accent-hover:#4338ca;--accent-dim:#eef2ff;--text:#0f172a;--text-2:#475569;--text-3:#94a3b8;--text-muted:#94a3b8;--r-xs:6px;--r-sm:8px;--r:12px;--r-lg:16px;--shadow-sm:0 1px 3px #0f172a0f;--shadow:0 2px 8px #0f172a12, 0 1px 3px #0f172a0a;--shadow-md:0 8px 24px #0f172a1a, 0 2px 6px #0f172a0d}*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh;font-size:14px;line-height:1.55}.app{max-width:960px;margin:0 auto;padding:16px 20px 40px}h1{letter-spacing:-.02em;color:var(--text);font-size:1.1rem;font-weight:700}h2{text-transform:uppercase;letter-spacing:.09em;color:var(--text-2);margin-bottom:10px;font-size:.7rem;font-weight:700}.app-header{border-bottom:1px solid 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