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transparent);width:min(100%,560px);box-shadow:var(--shadow);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border-radius:24px;padding:42px}.auth-card>img{object-fit:contain;margin-bottom:24px;display:block}.auth-card .eyebrow{margin-bottom:12px}.auth-card h1{font-family:var(--font-display);letter-spacing:-.055em;margin:0;font-size:clamp(34px,7vw,52px)}.auth-card>p{color:var(--muted);margin:14px 0 0;font-size:13px;line-height:1.75}.auth-actions{flex-wrap:wrap;gap:9px;margin-top:28px;display:flex}.auth-actions form{display:contents}.primary-button,.ghost-button,.danger-button{cursor:pointer;border-radius:12px;justify-content:center;align-items:center;gap:8px;min-height:44px;padding:0 15px;font-size:11px;font-weight:850;text-decoration:none;display:inline-flex}.primary-button{background:var(--cyan);color:#061317;border:0}.ghost-button{border:1px solid var(--border-strong);background:var(--surface-raised)}.danger-button{color:var(--danger);background:0 0;border:1px solid #ff776e38}.account-details{border:1px solid var(--border);background:var(--border);border-radius:15px;gap:1px;margin:25px 0 0;display:grid;overflow:hidden}.account-details div{background:var(--surface-raised);grid-template-columns:130px 1fr;gap:16px;padding:13px 15px;display:grid}.account-details dt{color:var(--faint);font-size:10px;font-weight:800}.account-details dd{color:var(--text-soft);text-align:right;overflow-wrap:anywhere;margin:0;font-size:11px}@keyframes shimmer{to{background-position:-200% 0}}@keyframes message-in{0%{opacity:0;transform:translateY(8px)}}@keyframes think{0%,60%,to{opacity:.3;transform:translateY(0)}30%{opacity:1;transform:translateY(-3px)}}@media (max-width:900px){.app-shell{grid-template-columns:1fr}.sidebar{width:min(310px,88vw);transition:transform .24s;position:fixed;top:0;bottom:0;left:0;transform:translate(-105%);box-shadow:30px 0 80px #0006}.sidebar.is-open{transform:translate(0)}.sidebar-backdrop{z-index:25;visibility:hidden;opacity:0;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);background:#00000085;transition:all .24s;display:block;position:fixed;inset:0}.sidebar-backdrop.is-open{visibility:visible;opacity:1}.mobile-close,.menu-button{display:grid}.topbar>.brand-mark{display:inline-flex}.topbar{height:64px;padding:0 14px}.thread-heading,.desktop-theme{display:none}.welcome{padding-bottom:196px}}@media (max-width:640px){.topbar{gap:8px}.topbar-actions{gap:5px}.top-signin,.top-account{justify-content:center;width:37px;padding:0}.top-signin span,.top-account span{display:none}.message-meter{height:30px;padding:0 8px;font-size:8px}.welcome{justify-content:flex-start;width:calc(100% - 28px);padding-top:48px;padding-bottom:184px}.welcome-sigil{border-radius:16px;width:50px;height:50px;margin-bottom:20px}.welcome h1{max-width:420px;font-size:clamp(33px,11vw,47px)}.welcome-copy{max-width:400px;margin-top:15px;font-size:12px;line-height:1.65}.starter-grid{grid-template-columns:1fr;gap:7px;margin-top:25px}.starter-grid button{border-radius:13px;grid-template-columns:32px minmax(0,1fr) auto;column-gap:10px;min-height:67px;padding:11px 13px}.message-stream{padding:28px 15px 190px}.message{grid-template-columns:29px minmax(0,1fr);gap:10px}.message+.message{margin-top:29px}.message-avatar{border-radius:9px;width:29px;height:29px}.markdown,.user-message>div:last-child>p{font-size:13px}.composer-dock{padding:35px 11px calc(10px + env(safe-area-inset-bottom))}.composer{border-radius:16px;padding:12px 11px 8px 14px}.composer textarea{font-size:13px}.fine-print{line-height:1.4}.composer-bottom>span{display:none}.auth-card{border-radius:20px;padding:28px 22px}.auth-actions{grid-template-columns:1fr;display:grid}.account-details div{grid-template-columns:1fr;gap:5px}.account-details dd{text-align:left}}@media (min-width:901px) and (max-height:760px){.sidebar{padding-top:14px;padding-bottom:10px}.sidebar-head{min-height:46px}.sidebar-head .brand-image{width:40px;height:40px}.new-chat-button{height:42px;margin-top:10px;margin-bottom:6px}.thread-list{margin-top:5px;margin-bottom:6px}.sidebar-upgrade{margin-bottom:8px;padding:12px}.upgrade-orbit{width:27px;height:27px;margin-bottom:8px}.sidebar-upgrade p{margin-top:4px;margin-bottom:8px;line-height:1.4}.sidebar-foot{padding-top:6px}.account-link{padding-top:5px;padding-bottom:5px}.conversation:not(.has-messages) .welcome{scrollbar-width:thin;scrollbar-color:var(--border-strong) transparent;justify-content:flex-start;padding-top:24px;padding-bottom:18px;overflow-y:auto}.conversation:not(.has-messages) .welcome-sigil{border-radius:16px;width:50px;height:50px;margin-bottom:16px}.conversation:not(.has-messages) .welcome h1{margin-top:11px;font-size:clamp(40px,7vh,52px)}.conversation:not(.has-messages) .welcome-copy{margin-top:14px;font-size:13px;line-height:1.6}.conversation:not(.has-messages) .starter-grid{margin-top:20px}.conversation:not(.has-messages) .starter-grid button{min-height:92px}.conversation:not(.has-messages) .composer-dock{flex:none;padding-top:16px;padding-bottom:14px;position:relative;bottom:auto;left:auto;right:auto}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}