:root{color-scheme:light;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at top,#f5faff 0,#eaf2ff 45%,#dce8ff 100%);color:#172136}.page-shell{min-height:100vh;display:grid;place-items:center;padding:24px}.card{width:min(100%,420px);background:#ffffff;border:1px solid #d7e2ff;border-radius:14px;padding:24px;box-shadow:0 10px 30px rgba(17,39,84,.08);display:grid;grid-gap:12px;gap:12px}h1{font-size:1.5rem}h1,p{margin:0}p{line-height:1.5}button{border:0;border-radius:10px;background:#1647d6;color:#ffffff;font-weight:600;padding:10px 14px;cursor:pointer}button:hover{background:#123cb6}button:focus-visible{outline:3px solid #9db8ff;outline-offset:2px}.error-text{color:#b3261e}.spinner{width:28px;height:28px;border:3px solid #c6d7ff;border-top-color:#1647d6;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}