:root{font-family:Segoe UI,-apple-system,BlinkMacSystemFont,sans-serif;color:#13223a;background:#f4f7fb}*{box-sizing:border-box}body{margin:0}.page{min-height:100vh;display:grid;place-items:center;padding:16px}.card{background:#fff;border:1px solid #d6dfea;border-radius:10px;box-shadow:0 12px 30px #13223a14;width:min(540px,100%);padding:24px}.not-found{text-align:center;padding:36px 24px}h1{font-size:1.3rem;margin:0 0 12px}p{margin:0;line-height:1.5;color:#1f4772}.error-code{margin:0 0 10px;font-size:3rem;line-height:1;font-weight:700;color:#0d2644}.home-link{display:inline-block;margin-top:20px;padding:10px 16px;border-radius:8px;border:1px solid #0f3b66;color:#0f3b66;text-decoration:none;font-weight:600}.home-link:hover{background:#0b3055}.spinner{width:56px;height:56px;border-radius:50%;border:5px solid #d6e1ee;border-top-color:#0f3b66;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}