*{box-sizing:border-box}
:root{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Segoe UI",sans-serif;font-synthesis:none;color-scheme:light;--paper:#f5f2eb;--ink:#2a2723;--muted:#7a736b;--line:rgb(42 39 35 / 12%);--story:#eae4d9;--surface:#fffdfa;--accent:#49685c;--accent-hover:#3c5a4f;color:var(--ink);background:var(--paper)}
html[data-theme=dark]{color-scheme:dark;--paper:#1a1815;--ink:#f0ece5;--muted:#a39c92;--line:rgb(255 255 255 / 12%);--story:#221f1b;--surface:#262320;--accent:#7fa294;--accent-hover:#8fb3a5}
body{margin:0}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{opacity:.55;cursor:wait}a{color:inherit;text-decoration:none}[hidden]{display:none!important}button:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:4px}button:active{transform:scale(.98)}
.auth-layout{min-height:100dvh;display:grid;grid-template-columns:40% 60%}.story{background:var(--story);border-right:1px solid var(--line);padding:30px clamp(28px,4vw,72px);display:flex;flex-direction:column}.brand,.native-brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:650;letter-spacing:-.5px}.brand img,.native-brand img{width:28px;height:32px;object-fit:contain}.story-copy{margin:auto 0;padding:36px 0;max-width:460px}.eyebrow,.native-eyebrow{color:var(--accent);font-size:12px;letter-spacing:1.5px}.story h1{font-size:clamp(32px,3.2vw,50px);line-height:1.3;letter-spacing:-1.6px;margin:24px 0}.intro{font-size:14px;line-height:1.9;color:var(--muted)}.story-notes{display:grid;gap:22px;margin-top:38px}.story-notes>div{display:flex;gap:16px}.story-notes>div>span{font-size:11px;color:var(--muted);padding-top:4px}.story-notes h2{font-size:14px;margin:0 0 5px;font-weight:600}.story-notes p{font-size:12px;line-height:1.7;margin:0;color:var(--muted)}.story footer{font-size:11px;color:var(--muted)}
.auth-panel{display:flex;flex-direction:column;padding:22px clamp(24px,5vw,80px) 14px;min-width:0}.page-nav{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted);height:30px;flex:none}.page-nav button{border:0;background:none;color:inherit;font-size:22px;width:30px;height:30px}.auth-content{width:100%;max-width:380px;margin:auto;padding:18px 0}.auth-logo{width:30px;height:34px;object-fit:contain;display:block;margin-bottom:18px}.auth-content header{margin-bottom:20px}.auth-content h2{font-size:28px;line-height:1.3;letter-spacing:-.8px;margin:0 0 8px;font-weight:650}.auth-content header p{font-size:14px;font-weight:400;color:var(--muted);line-height:1.6;margin:0}label{display:block;font-size:12px;font-weight:550;margin:14px 0 7px}input{display:block;width:100%;height:42px;border:1px solid var(--line);border-radius:7px;padding:10px 12px;background:var(--surface);color:var(--ink)}input:focus{outline:2px solid var(--accent);outline-offset:1px}input::placeholder{color:var(--muted);opacity:.65}.form-help{display:flex;justify-content:space-between;gap:12px;margin-top:10px;color:var(--muted);font-size:11px;line-height:1.5}.text-button,.form-help button,.switch-mode button{border:0;background:none;color:inherit;padding:0}.form-help button{white-space:nowrap}.text-button:hover,.form-help button:hover,.switch-mode button:hover{text-decoration:underline;text-underline-offset:3px}.primary{display:block;width:100%;min-height:42px;margin-top:18px;padding:10px 16px;background:var(--accent);color:#fff;border:1px solid transparent;border-radius:7px;font-weight:600;font-size:14px}.primary:hover{background:var(--accent-hover)}.error{font-size:12px;color:#bf534c;line-height:1.6;margin:8px 0}.error:empty,#provider-status:empty{display:none}.divider{display:flex;align-items:center;gap:12px;margin:20px 0 12px;font-size:11px;color:var(--muted)}.divider:before,.divider:after{content:"";height:1px;background:var(--line);flex:1}.providers{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.providers button{display:flex;align-items:center;justify-content:center;gap:8px;height:42px;padding:8px;border:1px solid var(--line);border-radius:7px;background:transparent;color:var(--muted);font-size:12px;cursor:default}.providers img{width:20px;height:20px;object-fit:contain}.switch-mode{text-align:center;color:var(--muted);font-size:12px;margin:18px 0 0}.switch-mode button{color:var(--ink);font-weight:550}.auth-footnote,.panel-footer{font-size:10px;line-height:1.5;text-align:center;color:var(--muted);margin:10px 0 0}.panel-footer{flex:none}.code-row{display:flex;gap:8px}.code-row button{flex:none;border:1px solid var(--line);border-radius:7px;background:var(--story);color:var(--ink);padding:0 12px;font-size:12px}.app-context{border-left:2px solid var(--accent);padding:8px 10px;margin:0 0 14px;font-size:12px;line-height:1.6;color:var(--muted)}#authorize h3{font-size:17px}#authorize p,#provider-status,#app-status{font-size:12px;line-height:1.7;color:var(--muted)}#authorize .text-button{display:block;margin:18px auto;font-size:12px}
html[data-theme=dark] :is(.brand img,.auth-logo,.native-brand img){filter:invert(1)}
.native-login{min-height:100dvh;background:var(--paper)}#native-panel{min-height:100dvh;display:flex;flex-direction:column;padding:64px 48px 28px}.native-brand{align-self:flex-start}.native-card{width:min(100%,380px);margin:auto; padding:40px 0; text-align:left}.native-card h1{font-size:34px;line-height:1.25;letter-spacing:-1px;margin:18px 0 12px}.native-description{font-size:14px;line-height:1.8;color:var(--muted);margin:0 0 32px}.native-card .primary{display:flex;align-items:center;justify-content:center;gap:12px;min-height:46px}.native-card #native-status{font-size:12px;color:var(--muted);line-height:1.8;min-height:44px;margin:16px 0 22px}.native-card .text-button{font-size:12px;color:var(--muted)}.native-footnote{font-size:11px;color:var(--muted);text-align:center;margin:0}
@media(max-height:760px){.auth-panel{padding-top:14px}.auth-content{padding:10px 0}.auth-logo{margin-bottom:12px;width:24px;height:28px}.auth-content header{margin-bottom:14px}.auth-content h2{font-size:25px}label{margin-top:10px}.divider{margin:16px 0 10px}.story-copy{padding:20px 0}.story-notes{gap:18px;margin-top:24px}.story h1{font-size:36px}.auth-footnote{display:none}}
@media(max-width:900px){.auth-layout{grid-template-columns:34% 66%}.story{padding:24px}.story h1{font-size:32px}.story-notes>div>span{display:none}.intro br{display:none}.story-notes p{font-size:11px}}
@media(max-width:640px){.auth-layout{display:block}.story{display:none}.auth-panel{min-height:100dvh;padding:16px 24px}.auth-content{max-width:380px}.auth-logo{display:block}#native-panel{padding:54px 24px 24px}.native-card h1{font-size:30px}}
@media(prefers-reduced-motion:reduce){button:active{transform:none}}

#native-panel{justify-content:center;align-items:center;padding:48px 24px}.native-card{width:min(100%,380px);margin:auto;text-align:center}.native-card .native-brand{display:flex;align-items:center;justify-content:center;gap:12px;font-size:32px;font-weight:650;margin:0 0 20px;letter-spacing:-.6px}.native-card .native-brand img{width:36px;height:36px}.native-description{margin-bottom:28px}.native-card #native-offline{display:block;margin:12px auto 0;text-align:center}

/* Browser-to-App authorization keeps account choice visible before consent. */
:root{--paper:oklch(97% .012 82);--ink:oklch(24% .018 66);--muted:oklch(51% .016 66);--line:oklch(88% .014 78);--story:oklch(93% .025 78);--surface:oklch(99% .006 82);--accent:oklch(50% .11 258);--accent-hover:oklch(44% .12 258)}
html[data-theme=dark]{--paper:oklch(20% .012 72);--ink:oklch(92% .012 82);--muted:oklch(70% .014 76);--line:oklch(34% .014 74);--story:oklch(24% .018 70);--surface:oklch(25% .012 72);--accent:oklch(72% .105 252);--accent-hover:oklch(78% .09 252)}
.story{position:relative;overflow:hidden}.story:after{content:"A";position:absolute;right:-.05em;bottom:-.24em;color:color-mix(in oklch,var(--ink) 4%,transparent);font-family:"Songti SC",STSong,serif;font-size:min(42vw,560px);font-weight:700;line-height:1;pointer-events:none}.story>*{position:relative;z-index:1}.story h1{font-family:"Songti SC",STSong,serif;font-weight:600}.authorization-story{display:none}.handoff-path{display:flex;align-items:center;gap:14px;margin-top:42px;color:var(--ink);font-size:12px;font-weight:650}.handoff-path i{width:clamp(48px,7vw,96px);height:1px;background:var(--ink);opacity:.24;position:relative}.handoff-path i:after{content:"";position:absolute;right:0;top:-3px;width:6px;height:6px;border-top:1px solid var(--ink);border-right:1px solid var(--ink);transform:rotate(45deg)}
.authorize-mode .auth-layout{grid-template-columns:minmax(320px,36%) minmax(0,1fr)}
.authorize-mode .login-story,.authorize-mode .page-nav,.authorize-mode .panel-footer,.authorize-mode .auth-logo,.authorize-mode .auth-content>header{display:none}
.authorize-mode .authorization-story{display:block}
.authorize-mode .story{padding:clamp(28px,4vw,64px)}
.authorize-mode .story h1{font-size:clamp(36px,3.4vw,54px)}
.authorize-mode .auth-panel{padding:clamp(40px,7vh,88px) clamp(32px,7vw,112px)}
.authorize-mode .auth-content{max-width:570px;margin:auto;padding:0;animation:auth-enter .22s cubic-bezier(.22,1,.36,1)}
#authorize .authorize-kicker{margin:0 0 14px;color:var(--accent);font-size:11px;font-weight:700;letter-spacing:1.6px}
.authorize-mode #authorize h3{max-width:520px;margin:0;font-family:"Songti SC",STSong,serif;font-size:clamp(34px,3.2vw,46px);font-weight:600;line-height:1.22;letter-spacing:-1px}
.authorize-mode #authorize-description{max-width:520px;margin:14px 0 28px;color:var(--muted);font-size:14px;line-height:1.8}
.authorize-identity{display:grid;grid-template-columns:44px minmax(0,1fr) auto;align-items:center;gap:14px;min-height:88px;padding:16px 18px;border:1px solid var(--line);border-radius:12px;background:var(--surface)}
.authorize-avatar{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:var(--ink);color:var(--paper);font-family:"Songti SC",STSong,serif;font-size:18px;font-weight:700}
.authorize-account-name{min-width:0}.authorize-account-name span{display:block;margin-bottom:5px;color:var(--muted);font-size:11px}.authorize-account-name strong{display:block;overflow:hidden;text-overflow:ellipsis;font-size:14px;font-weight:650;white-space:nowrap}
.authorize-account-actions{display:flex;align-items:center;gap:12px}.authorize-account-actions button{min-height:40px;padding:0;border:0;background:transparent;color:var(--accent);font-size:12px;font-weight:650;white-space:nowrap}.authorize-account-actions button+button{padding-left:12px;border-left:1px solid var(--line);color:var(--muted);font-weight:500}.authorize-account-actions button:hover{text-decoration:underline;text-underline-offset:4px}
.authorize-scope{padding:23px 0 19px;border-bottom:1px solid var(--line)}.authorize-scope h4{margin:0 0 8px;color:var(--muted);font-size:11px;font-weight:650;letter-spacing:.4px}.authorize-scope p{display:grid;grid-template-columns:112px 1fr;gap:16px;margin:0;padding:8px 0}.authorize-scope span{font-size:13px;font-weight:650}.authorize-scope small{color:var(--muted);font-size:12px;line-height:1.65}
.authorize-actions{display:grid;gap:7px;margin-top:24px}.authorize-actions .primary{display:flex;align-items:center;justify-content:center;gap:9px;min-height:50px;margin:0}.authorize-actions .text-button{justify-self:center;min-height:42px;padding:0 10px;color:var(--muted);font-size:12px}
#app-status{min-height:20px;margin:7px 0 0;color:var(--accent);font-size:12px;line-height:1.7}
#app-status.exit-notice{margin-top:16px;padding:12px 14px;border:1px solid var(--line);border-radius:8px;background:var(--surface);font-weight:650}
.authorize-footnote{margin:18px 0 0;padding-top:14px;border-top:1px solid var(--line);color:var(--muted);font-size:11px;line-height:1.6}
html[data-theme=dark] .authorize-actions .primary{color:var(--paper)}
@keyframes auth-enter{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@media(max-height:760px){.authorize-mode .auth-panel{padding-top:28px;padding-bottom:28px}.authorize-mode #authorize-description{margin:10px 0 20px}.authorize-scope{padding:14px 0 10px}.authorize-actions{margin-top:16px}.authorize-footnote{margin-top:10px;padding-top:10px}}
@media(max-width:900px){.authorize-mode .auth-layout{grid-template-columns:minmax(280px,34%) minmax(0,1fr)}.authorize-mode .auth-panel{padding-left:42px;padding-right:42px}.authorize-mode .story h1{font-size:38px}}
@media(max-width:760px){.authorize-mode .auth-layout{display:block}.authorize-mode .story{display:flex;min-height:auto;padding:18px 24px;border-right:0;border-bottom:1px solid var(--line)}.authorize-mode .story:after,.authorize-mode .story footer,.authorize-mode .authorization-story{display:none}.authorize-mode .auth-panel{min-height:auto;padding:32px 24px 42px}.authorize-mode .auth-content{max-width:none}.authorize-mode #authorize h3{font-size:32px}}
@media(max-width:640px){.authorize-mode .story{display:flex}.authorize-identity{grid-template-columns:40px minmax(0,1fr);gap:10px}.authorize-account-actions{grid-column:2}.authorize-scope p{grid-template-columns:1fr;gap:3px}.authorize-mode #authorize-description{margin-bottom:22px}}
@media(max-width:460px){.authorize-account-actions button{min-height:32px}.authorize-footnote{margin-top:8px;padding-top:8px}.authorize-mode #authorize h3{font-size:29px}}
@media(prefers-reduced-motion:reduce){.authorize-mode .auth-content{animation:none}}