:root{--color-bg:#f8fafc;--color-surface:#ffffff;--color-border:#e2e8f0;--color-text:#0f172a;--color-text-muted:#64748b;--color-primary:#0d9488;--color-primary-hover:#0f766e;--color-primary-light:#ccfbf1;--color-danger:#dc2626;--color-danger-light:#fef2f2;--color-success:#059669;--color-success-light:#ecfdf5;--color-warning:#d97706;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--shadow-sm:0 1px 2px rgba(15,23,42,0.06);--shadow-md:0 4px 12px rgba(15,23,42,0.08);--font-sans:"Segoe UI",system-ui,-apple-system,sans-serif;--max-width:480px}*,:after,:before{box-sizing:border-box}body,html{margin:0;padding:0;min-height:100%}body{font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text);line-height:1.5;-webkit-font-smoothing:antialiased}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}button{font-family:inherit}h1,h2,h3,p{margin:0}