:root{--primary-color: #0056b3;--secondary-color: #6c757d;--success-color: #1e7e34;--danger-color: #bd2130;--bg-color: #ffffff;--text-color: #212529;--border-color: #dee2e6;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif}body{margin:0;font-family:var(--font-family);background-color:#f4f7f6;color:var(--text-color);line-height:1.6}*{box-sizing:border-box}button{min-height:44px;min-width:44px;padding:10px 20px;font-size:1rem;font-weight:600;border-radius:6px;cursor:pointer;transition:opacity .2s}button:disabled{opacity:.6;cursor:not-allowed}input,select,textarea{min-height:44px;padding:10px;font-size:1rem;border:2px solid var(--border-color);border-radius:6px;width:100%}input:focus,select:focus,textarea:focus{border-color:var(--primary-color);outline:none;box-shadow:0 0 0 3px #0056b340}.container{max-width:800px;margin:0 auto;padding:20px}.card{background:#fff;padding:20px;border-radius:10px;box-shadow:0 2px 10px #0000000d;margin-bottom:20px}h1,h2,h3{color:#111;margin-top:0}a{color:var(--primary-color);text-decoration:underline}a:hover{text-decoration:none}