.auth-shell{min-height:100dvh;display:grid;place-items:center;padding:32px 20px}.auth-card{width:min(100%,520px);padding:38px;border-top:16px solid #263d92;box-shadow:0 24px 80px #18104426}.auth-brand{display:flex;align-items:center;gap:14px;margin-bottom:32px}.auth-brand strong{display:block;letter-spacing:.08em}.auth-brand small{display:block;font-size:10px;letter-spacing:.13em;margin-top:3px}.auth-card h1{font-size:clamp(25px,4vw,34px);line-height:1.2}.auth-intro,.auth-help{line-height:1.6;font-size:17px}.auth-card input{font-size:18px;min-height:48px}.auth-card form{margin-top:25px}.auth-card form p{margin:0;line-height:1.5}.auth-error{color:#8b183e;min-height:24px}.auth-card form>.btn{width:100%;min-height:52px}.auth-help{margin-top:24px;font-size:14px;color:#525c76}.auth-home{display:block;margin-top:20px}.live-identity{font-size:14px;color:#495575}.preview-badge{display:flex;gap:12px;align-items:center}.auth-card .brand-mark{flex-shrink:0}@media(max-width:500px){.auth-shell{padding:20px 12px;align-items:start}.auth-card{padding:28px 22px;margin-top:24px}.auth-brand{margin-bottom:24px}.auth-help{font-size:15px}.live-identity{display:none}.header-actions{gap:8px}.header-actions>.btn{padding:10px 14px}}