:root{--blue:#006bff;--blue-dark:#0052cc;--ink:#1a1a2e;--gray-600:#4d5055;--gray-300:#e1e1e6;--gray-100:#f5f6f8;--radius:10px}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--gray-100)}a{color:var(--blue)}button{font-family:inherit;cursor:pointer}.btn-primary{background:var(--blue);color:#fff;border:none;border-radius:8px;padding:10px 20px;font-size:15px;font-weight:600}.btn-primary:hover{background:var(--blue-dark)}.btn-primary:disabled{background:var(--gray-300);cursor:not-allowed}.btn-secondary{background:#fff;color:var(--ink);border:1px solid var(--gray-300);border-radius:8px;padding:10px 20px;font-size:15px;font-weight:600}.btn-secondary:hover{background:var(--gray-100)}input,select,textarea{font-family:inherit;font-size:15px;padding:10px 12px;border:1px solid var(--gray-300);border-radius:8px;width:100%}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--blue)}.card{background:#fff;border-radius:var(--radius);box-shadow:0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.04)}.container{max-width:1100px;margin:0 auto;padding:24px}