body { background: #f4f6fa; min-height: 100vh; }
.auth-shell { min-height: 100vh; display: grid; place-items: center; padding: 1rem; }
.auth-card { width: min(100%, 430px); border: 0; box-shadow: 0 14px 45px rgba(31, 41, 55, .1); }
.auth-brand { color: var(--tblr-primary); font-weight: 700; letter-spacing: .02em; }