.auth-shell{background:var(--bg);min-height:100vh;color:var(--t1);font-family:var(--sans);flex-direction:column;display:flex}.auth-header{padding:20px 48px;padding-top:calc(20px + env(safe-area-inset-top,0px));border-bottom:1px solid var(--bd);-webkit-backdrop-filter:saturate(180%)blur(24px);background:#0e0e0cb8;justify-content:space-between;align-items:center;display:flex}.auth-logo{font-family:var(--serif);color:var(--t1);letter-spacing:-.015em;font-size:22px;font-weight:400;line-height:1;text-decoration:none}.auth-logo em{color:var(--ac);font-style:italic;font-weight:500}.auth-logo-ai{color:var(--ai);font-style:italic;font-weight:500}.auth-logo-full{display:inline}.auth-logo-mark{letter-spacing:-.02em;display:none}.auth-logo-mark,.auth-logo-mark em,.auth-logo-mark .auth-logo-ff,.auth-logo-mark .auth-logo-ai{font-style:italic;font-weight:500}.auth-logo-mark .auth-logo-ff{color:var(--t1)}.auth-back{font-family:var(--sans);color:var(--t3);height:var(--touch-min);transition:color .2s var(--ease-smooth), background .2s var(--ease-smooth);border-radius:8px;align-items:center;gap:8px;padding:0 14px;font-size:13px;font-weight:400;text-decoration:none;display:inline-flex}.auth-back:hover{color:var(--t1);background:var(--s1)}.auth-back:focus-visible{outline:2px solid var(--ac);outline-offset:2px}.auth-main{flex-direction:column;flex:1;justify-content:center;align-items:center;gap:24px;padding:48px 24px;display:flex}.auth-loading{font-family:var(--sans);color:var(--t3);letter-spacing:.04em;font-size:14px;animation:1.5s ease-in-out infinite auth-pulse}@keyframes auth-pulse{0%,to{opacity:.5}50%{opacity:1}}@media (max-width:768px){.auth-header{padding:16px 20px;padding-top:calc(16px + env(safe-area-inset-top,0px))}.auth-logo{font-size:20px}.auth-back span{display:none}.auth-back{width:var(--touch-min);height:var(--touch-min);justify-content:center;padding:0}.auth-main{padding:32px 16px}.auth-logo-full{display:none}.auth-logo-mark{font-size:20px;display:inline}}