:root{--ink: #171717;--text: #353535;--muted: #6c6c6c;--faint: #858585;--line: #e7e7e7;--field: #bdbdbd;--card: #f9f8f6;--ok: #37653d;--error: #a63d3d;--ease: cubic-bezier(.22, 1, .36, 1);color:var(--ink);background:#fff;font-family:Arial,sans-serif;font-synthesis:none;-webkit-font-smoothing:antialiased}*{box-sizing:border-box}html,body{min-width:320px;margin:0;background:#fff}body{color:var(--ink);font-size:15px;letter-spacing:-.012em}button,input{font:inherit;letter-spacing:inherit}a{color:inherit}:focus-visible{outline:2px solid var(--ink);outline-offset:2px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}[hidden]{display:none!important}.shell{display:flex;flex-direction:column;width:min(100% - 48px,1160px);min-height:100svh;margin:0 auto}body[data-auth=pending] :is(#sign-in,#app,.app-nav,.account),body[data-auth=signed-out] :is(#app,.app-nav,.account),body[data-auth=signed-in] #sign-in{display:none}.app-header{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:32px;padding:22px 0 18px;background:#ffffffdb;backdrop-filter:saturate(1.8) blur(16px);-webkit-backdrop-filter:saturate(1.8) blur(16px)}.brand{display:inline-flex;align-items:center;gap:.25em;font-size:clamp(1.2rem,2.4vw,1.5rem);letter-spacing:-.03em;line-height:1.3;text-decoration:none}.brand-mark{width:.9em;height:.9em}.brand span{translate:0 -.12em}.app-nav{display:flex;gap:24px}.app-nav a{color:var(--muted);text-decoration:none;transition:color .2s}.app-nav a:hover,body[data-page=alvin] .app-nav [data-page=alvin],body[data-page=device] .app-nav [data-page=device]{color:var(--ink)}.account{display:flex;align-items:center;gap:16px;margin-left:auto;color:var(--muted)}.account-email{max-width:26ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.btn{min-height:44px;padding:10px 20px;border:1px solid var(--ink);border-radius:0;cursor:pointer;transition:background .2s,color .2s,opacity .2s}.btn-primary{background:var(--ink);color:#fff}.btn-primary:hover:not(:disabled){background:transparent;color:var(--ink)}.btn-secondary{background:transparent;color:var(--ink)}.btn-secondary:hover:not(:disabled){background:var(--ink);color:#fff}.btn:disabled{cursor:wait;opacity:.55}.link-btn{padding:0;border:0;background:none;color:var(--muted);cursor:pointer;transition:color .2s}.link-btn:hover{color:var(--ink)}input[type=text],input[type=email],input[type=password]{min-width:0;height:44px;padding:0 14px;border:1px solid var(--field);border-radius:0;background:#fff;color:var(--ink);outline:none;transition:border-color .2s}input::placeholder{color:var(--faint)}input:focus{border-color:var(--ink)}.sign-in{display:flex;flex-direction:column;align-items:center;justify-content:center;flex:1;width:min(100%,380px);margin:0 auto;padding:8vh 0 14vh;text-align:center;animation:rise .9s var(--ease) both}.sign-in-mark{width:44px;height:44px;margin-bottom:28px}.sign-in h1{margin:0;font-size:clamp(2rem,4vw,2.6rem);font-weight:400;letter-spacing:-.05em;line-height:1.05}.sign-in .lede{margin:12px 0 32px;color:var(--muted);font-size:17px}.sign-in-form{display:grid;gap:14px;width:100%}.field-group{display:grid;border:1px solid var(--field);transition:border-color .2s}.field-group:focus-within{border-color:var(--ink)}.field-group input{width:100%;height:52px;border:0;font-size:16px}.field-group input+label+input{border-top:1px solid var(--line)}.sign-in-form .btn{height:52px;font-size:16px}.form-status{min-height:1.4em;margin:16px 0 6px;color:var(--muted);font-size:14px;line-height:1.4}.form-status[data-state=error]{color:var(--error)}.form-status[data-state=info]{color:var(--text)}.app{width:min(100%,760px);margin:0 auto;padding:clamp(36px,6vw,72px) 0 96px}.intro{animation:rise .9s var(--ease) both}.eyebrow{margin:0 0 14px;color:var(--muted);font-size:clamp(.95rem,1.4vw,1.1rem)}.intro h1{margin:0;font-size:clamp(2.2rem,4.4vw,3.4rem);font-weight:400;letter-spacing:-.06em;line-height:1}.intro .lede{max-width:46ch;margin:16px 0 0;color:var(--text);font-size:17px;line-height:1.55}h2{margin:0 0 18px;font-size:clamp(1.3rem,2.2vw,1.6rem);font-weight:400;letter-spacing:-.04em;line-height:1.1}.muted{color:var(--muted)}.connection{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px 24px;margin-top:40px;padding:20px 0;border-block:1px solid var(--line);animation:rise .9s var(--ease) .1s both}.user-id{display:flex;align-items:center;gap:10px}.user-id label{color:var(--muted)}.user-id input{width:15ch}.pill{display:inline-flex;align-items:center;gap:8px;margin:0;color:var(--muted)}.pill:before{content:"";flex:none;width:8px;height:8px;border-radius:50%;background:var(--field)}.pill[data-state=connecting]:before{background:var(--faint);animation:pulse 1.2s ease-in-out infinite}.pill[data-state=connected]{color:var(--ink)}.pill[data-state=connected]:before{background:var(--ok)}.pill[data-state="unknown user"]{color:var(--error)}.pill[data-state="unknown user"]:before{background:var(--error)}.session-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;animation:rise .9s var(--ease) both}.session{display:flex;align-items:center;gap:14px;min-width:0}.session .pill{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.history-btn{display:inline-flex;align-items:center;gap:8px;min-height:36px;padding:6px 14px;border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer;transition:border-color .2s}.history-btn:hover{border-color:var(--ink)}.count{min-width:1.6em;padding:1px 6px;background:var(--card);color:var(--muted);font-size:12px;text-align:center}.count:empty{display:none}#connect-form{margin-top:16px;padding:16px 0;border-block:1px solid var(--line);animation:rise .4s var(--ease) both}.current{margin-top:clamp(48px,9vh,104px)}.current-idle{animation:rise .9s var(--ease) both}.current-idle h1{margin:0;font-size:clamp(2.2rem,4.4vw,3.4rem);font-weight:400;letter-spacing:-.06em;line-height:1.02}.current-idle .lede{max-width:46ch;margin:16px 0 0;color:var(--text);font-size:17px;line-height:1.55}.acorn-conversation-head{display:flex;align-items:center;justify-content:space-between;gap:16px;color:var(--muted);font-size:13px}.acorn-conversation-phase{display:inline-flex;align-items:center;gap:8px;color:var(--muted)}.acorn-conversation-phase:before{content:"";flex:none;width:8px;height:8px;border-radius:50%;background:var(--field)}.acorn-conversation.is-open .acorn-conversation-phase{color:var(--ink)}.acorn-conversation.is-open .acorn-conversation-phase:before{background:var(--ink);animation:pulse 1.2s ease-in-out infinite}.acorn-conversation-time{text-align:right}.acorn-turns{display:grid;gap:20px;margin-top:18px}.acorn-turn-who{margin:0 0 6px;color:var(--muted);font-size:13px}.acorn-turn-text{margin:0;color:var(--ink);font-size:clamp(1.15rem,2vw,1.35rem);letter-spacing:-.03em;line-height:1.3}.acorn-turn-alvin .acorn-turn-text{color:var(--text);font-size:16px;letter-spacing:-.012em;line-height:1.55}.acorn-turn.is-pending .acorn-turn-text{color:var(--faint)}.acorn-turn-note{margin:6px 0 0;color:var(--error);font-size:14px}.acorn-turn-tasks,.acorn-conversation-tasks{display:grid;gap:16px}.acorn-turn-tasks:not(:empty){margin-top:18px}.acorn-conversation-tasks:empty{display:none}.acorn-turns+.acorn-conversation-tasks{margin-top:18px}.acorn-turn .acorn-task,.acorn-conversation-tasks .acorn-task{padding:18px 20px;border:1px solid var(--line)}.acorn-turn .acorn-task q,.acorn-conversation-tasks .acorn-task q{color:var(--muted);font-size:15px;letter-spacing:-.012em}.current .acorn-conversation{animation:rise .7s var(--ease) both}.current .acorn-conversation+.acorn-conversation{margin-top:56px;padding-top:32px;border-top:1px solid var(--line)}.current .acorn-conversation-head{font-size:15px}.current .acorn-turns{gap:28px;margin-top:24px}.current .acorn-turn-wearer .acorn-turn-text{font-size:clamp(1.8rem,3.6vw,2.6rem);letter-spacing:-.05em;line-height:1.1}.current .acorn-turn-alvin .acorn-turn-text{font-size:19px}.acorn-needs{margin-top:24px;padding:clamp(20px,3vw,28px);background:var(--card)}.acorn-needs h2{display:flex;align-items:center;gap:10px}.acorn-needs h2:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--ink);animation:pulse 1.6s ease-in-out infinite}.acorn-needs-list{display:grid;gap:16px}.backdrop{position:fixed;inset:0;z-index:20;background:#1717172e;animation:fade .25s ease-out both}.history{position:fixed;z-index:21;top:0;right:0;bottom:0;display:flex;flex-direction:column;width:min(100%,460px);padding:22px clamp(20px,3vw,32px) 32px;overflow-y:auto;background:#fff;border-left:1px solid var(--line);box-shadow:-12px 0 40px #0000000f;animation:slide .35s var(--ease) both}.history-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px}.history-head h2{margin:0}.history-list .acorn-conversation{padding:20px 0;border-top:1px solid var(--line)}.history-list .acorn-turn-wearer .acorn-turn-text{font-size:17px}.history-list .acorn-turn-alvin .acorn-turn-text,.history-list .acorn-task-lines li{font-size:15px}.acorn-widget{padding:18px 20px 14px;border:1px solid var(--line);background:#fff;transition:opacity .3s}.acorn-widget-title{color:var(--ink);font-size:16px;letter-spacing:-.02em}.acorn-widget-about{margin-top:4px;color:var(--muted);font-size:13px}.acorn-widget-frame{display:block;width:100%;min-height:96px;margin-top:12px;border:0;background:transparent}.acorn-widget-answered{opacity:.5;pointer-events:none}.card{margin-top:48px;padding:clamp(20px,3vw,32px);background:var(--card)}.card-head{display:flex;align-items:center;justify-content:space-between;gap:16px}.card-head h2{margin:0}.live-browser .muted{margin:10px 0 16px}.live-browser-screen{width:100%;aspect-ratio:16 / 10;overflow:hidden;border:1px solid var(--line);background:#fff}.acorn-task-head{display:flex;align-items:center;justify-content:space-between;gap:16px;color:var(--muted);font-size:13px}.acorn-task-state{display:inline-flex;align-items:center;gap:8px;color:var(--ink)}.acorn-task-state:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--ink)}.acorn-task-working .acorn-task-state:before{animation:pulse 1.2s ease-in-out infinite}.acorn-task-done .acorn-task-state:before{background:var(--ok)}.acorn-task-failed .acorn-task-state{color:var(--error)}.acorn-task-failed .acorn-task-state:before{background:var(--error)}.acorn-task-time{text-align:right}.acorn-task q{display:block;margin-top:12px;color:var(--ink);font-size:clamp(1.15rem,2vw,1.35rem);letter-spacing:-.03em;line-height:1.3;quotes:"\201c" "\201d"}.acorn-task-lines{margin:14px 0 0;padding:0 0 0 16px;border-left:2px solid var(--line);list-style:none}.acorn-task-lines li{color:var(--text);font-size:16px;line-height:1.55}.acorn-task-lines li+li{margin-top:8px}.acorn-task-lines:empty{display:none}.acorn-task-widgets{display:grid;gap:16px;margin-top:16px}.acorn-task-widgets:empty{display:none}.empty{margin:0;padding:20px 0;border-top:1px solid var(--line);color:var(--muted)}.empty:empty{display:none}.device .intro,.device .connection{text-align:center}.device .intro .lede{margin-inline:auto}.device .connection{justify-content:center}.wake{display:flex;flex-direction:column;align-items:center;margin-top:56px;text-align:center;animation:rise .9s var(--ease) .2s both}.wake-btn{position:relative;width:168px;height:168px;border:0;border-radius:50%;background:var(--ink);color:#fff;font-size:19px;letter-spacing:-.02em;cursor:pointer;transition:transform .25s var(--ease),background .3s,color .3s}.wake-btn:hover:not(:disabled){transform:scale(1.03)}.wake-btn:active:not(:disabled){transform:scale(.97)}.wake-btn:disabled{background:var(--card);color:var(--faint);cursor:default}.wake-btn:after{content:"";position:absolute;inset:-10px;border-radius:50%;pointer-events:none}.wake:is([data-state=listening],[data-state="your turn"]) .wake-btn:after{border:1px solid var(--ink);animation:listen 1.6s var(--ease) infinite}.wake[data-state=speaking] .wake-btn:after{border:1px solid var(--ink);animation:pulse 1.2s ease-in-out infinite}.wake[data-state=working] .wake-btn:after{border:2px solid transparent;border-top-color:var(--ink);animation:spin 1.1s linear infinite}.device-state{margin:28px 0 0;color:var(--ink);font-size:19px;letter-spacing:-.02em}.wake[data-state="unknown user"] .device-state,.wake[data-state=offline] .device-state{color:var(--error)}.hint{max-width:34ch;margin:8px 0 0;color:var(--muted);font-size:14px;line-height:1.45}.device-error{margin:12px 0 0;color:var(--error);font-size:14px}.device-error:empty{display:none}.device-video{display:block;width:min(100%,360px);aspect-ratio:16 / 9;margin:40px auto 0;background:var(--card);object-fit:cover}.wake:is([data-state=disconnected],[data-state="unknown user"])~.device-video{display:none}@keyframes rise{0%{opacity:0;translate:0 14px}}@keyframes fade{0%{opacity:0}}@keyframes slide{0%{translate:24px 0;opacity:0}}@keyframes pulse{50%{opacity:.25}}@keyframes listen{0%{opacity:.7;scale:1}to{opacity:0;scale:1.35}}@keyframes spin{to{rotate:1turn}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}@media(max-width:640px){.shell{width:calc(100% - 32px)}.app-header{gap:20px}.account-email{display:none}.connection{flex-direction:column;align-items:stretch}.user-id{flex-wrap:wrap}.user-id label{flex-basis:100%}.user-id input{flex:1;width:auto}.device .user-id{justify-content:center}.current{margin-top:40px}.acorn-task-head,.acorn-conversation-head{flex-wrap:wrap}.wake-btn{width:148px;height:148px}}