.not-found-page{min-height:100vh;display:grid;place-items:center;background:radial-gradient(circle at 20% 20%,#f0f4ff,#e8ecf7 40%,#dde4f2 70%);color:#1c2a3a;padding:24px}.not-found-card{background:#fff;border-radius:16px;padding:40px 48px;max-width:520px;width:100%;box-shadow:0 12px 50px #14285026;text-align:center}.not-found-card h1{font-size:64px;letter-spacing:2px;margin:0 0 8px}.not-found-card h2{font-size:24px;margin:0 0 12px}.not-found-card p{margin:0 0 20px;color:#3c4b60}.not-found-link{display:inline-block;padding:10px 18px;border-radius:12px;background:linear-gradient(135deg,#2f6bff,#5f8dff);color:#fff;text-decoration:none;font-weight:600;box-shadow:0 6px 20px #2f6bff59;transition:transform .15s ease,box-shadow .15s ease}.not-found-link:hover{transform:translateY(-2px);box-shadow:0 10px 26px #2f6bff73}