:root{--bg:#f3f5f8;--surface:#fff;--surface-muted:#f8fafc;--text:#102a43;--text-muted:#4f6475;--border:#d9e2ec;--primary:#1769aa;--primary-hover:#12568c;--danger:#b42318;--success:#027a48;--shadow:0 18px 35px rgba(16,42,67,.08);--radius:12px}*{box-sizing:border-box}body,html{padding:0;margin:0;min-height:100%;background:radial-gradient(circle at top right,#d7e8f8 0,var(--bg) 40%,#eef2f6 100%);color:var(--text);font-family:Segoe UI,Avenir Next,Helvetica Neue,sans-serif}a{color:inherit;text-decoration:none}main{min-height:100vh}button,input,textarea{font:inherit}