:root{--color-primary:#1a365d;--color-primary-light:#2d4a7c;--color-success:#22c55e;--color-danger:#ef4444;--color-warning:#f59e0b;--color-text:#334155;--color-text-light:#64748b;--color-bg:#f8fafc;--color-white:#fff;--color-border:#e2e8f0;--shadow-sm:0 1px 2px #0000000d;--shadow-md:0 4px 6px #00000012;--shadow-lg:0 10px 15px #0000001a;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-full:50px}*{box-sizing:border-box;margin:0;padding:0}html,body{color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:16px;line-height:1.5}body{min-height:100dvh}a{color:var(--color-primary);text-decoration:none}input,textarea,select,button{font-family:inherit;font-size:inherit}.container{max-width:768px;margin:0 auto;padding:0 16px}.sr-only{clip:rect(0,0,0,0);border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.offline-banner{background:linear-gradient(135deg,var(--color-warning)0%,#d97706 100%);color:#fff;text-align:center;padding:10px 16px;font-size:14px;font-weight:600}