*,:before,:after{box-sizing:border-box}:root{--bg:#f8fafc;--surface:#fff;--text:#0f172a;--text-muted:#64748b;--border:#e2e8f0;--primary:#0369a1;--primary-hover:#0284c7;--primary-active:#075985;--success:#047857;--error:#b91c1c;--radius:10px;--radius-sm:6px;--shadow-sm:0 1px 2px #0f172a0a;--shadow:0 4px 16px #0f172a0f}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:var(--font-roboto), system-ui, -apple-system, "Segoe UI", sans-serif;-webkit-font-smoothing:antialiased;min-height:100dvh;font-size:16px;line-height:1.5}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3{letter-spacing:-.01em;margin:0;font-weight:500}button,input{font-family:inherit}