/* Web chat layout (design A). Kept separate so the installation pages keep
   their existing styles unchanged. */
body.chat-active{display:flex;flex-direction:column;height:var(--chat-viewport-height,100dvh);overflow:hidden}
body.chat-active header{flex:none;width:100%;max-width:1600px}
body.chat-active nav[aria-label="主导航"]{display:none}
body.chat-active main{display:flex;flex:1;min-height:0;width:100%;max-width:none;padding:0}
body.chat-active footer{display:none}
body.chat-active #visit-notice{display:none}
#chat.page.active{display:flex;flex-direction:column;flex:1;min-height:0;width:100%}
.chat-layout{--chat-surface:#fefef9;--chat-ink:#273d30;--chat-muted:#8a9484;--chat-accent:#35553b;--chat-line:#e0e4d6;--chat-tint:#e9edde;display:grid;grid-template-columns:220px minmax(0,1fr) 300px;flex:1;min-height:0;width:100%;max-width:1600px;margin:0 auto;color:var(--chat-ink);border-top:1px solid var(--line)}
.chat-side{display:flex;flex-direction:column;padding:26px 18px;border-right:1px solid var(--chat-line);min-width:0}
.chat-navitem{display:flex;align-items:center;gap:10px;width:100%;padding:12px;margin-bottom:4px;border:0;border-radius:9px;background:none;color:var(--chat-muted);font-size:13px;text-align:left}
.chat-navitem svg{width:18px;height:18px}
.chat-navitem.active,.chat-navitem:hover{background:var(--chat-tint);color:var(--chat-accent)}
.chat-session-note{margin:26px 8px 0;font-size:11px;line-height:1.8;color:var(--chat-muted)}
.chat-session-note span{font-size:10px}
.chat-profile{margin-top:auto;padding-top:30px;display:flex;align-items:center;gap:9px;min-width:0}
.chat-avatar{width:32px;height:32px;border-radius:50%;background:var(--chat-tint);color:var(--chat-accent);display:grid;place-items:center;font-size:12px;flex-shrink:0}
.chat-profile-name{font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chat-profile small{display:block;font-size:10px;color:var(--chat-muted);margin-top:3px}
.chat-profile button{margin-left:auto;flex-shrink:0;border:0;background:none;color:var(--chat-accent);font-size:11px;padding:6px 0 6px 8px}
.chat-main{display:flex;flex-direction:column;min-width:0;min-height:0;overflow:hidden;padding:26px 40px 18px}
.chat-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;border-bottom:1px solid var(--chat-line);padding-bottom:18px}
.chat-suggestions svg{width:14px;height:14px}
.chat-head h1{font-size:28px;letter-spacing:-1px;font-weight:500;margin:8px 0 4px}
.chat-head p{margin:0}
.chat-eyebrow{font-size:10px;letter-spacing:.5px;color:var(--chat-muted);margin:0;text-transform:uppercase}
.chat-space-btn{display:none;border:1px solid var(--chat-line);background:var(--chat-surface);border-radius:9px;padding:9px 12px;font-size:12px;white-space:nowrap}
.chat-body{flex:1;display:flex;flex-direction:column;min-height:0;max-height:none}
.chat-scroll{flex:1;overflow-y:auto;overflow-x:hidden;overscroll-behavior:contain;padding:18px 6px 10px 0}
.chat-link{max-width:100%;overflow-wrap:anywhere;word-break:break-word}
.chat-empty{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;margin:0;padding:32px 0;text-align:center;color:var(--chat-muted);font-size:13px;line-height:1.9}
#chat-messages:empty{display:none}
.chat-examples{display:flex;flex-direction:column;gap:10px;margin:20px auto 0;width:100%;max-width:420px}
.chat-example{display:flex;align-items:flex-start;gap:10px;width:100%;text-align:left;font-family:inherit;border:1px solid var(--chat-line);background:var(--chat-surface);border-radius:4px 14px 14px 14px;padding:12px 14px;font-size:13px;line-height:1.7;color:var(--chat-ink);cursor:pointer;transition:border-color 160ms ease,background-color 160ms ease}
.chat-example:hover{border-color:#c9d3bd;background:#fbfcf7}
.chat-example-tag{flex:none;margin-top:2px;font-size:10px;line-height:1.6;color:#6b7a70;border:1px solid var(--chat-line);border-radius:999px;padding:1px 7px}
.chat-example-text{min-width:0;flex:1}
.chat-exchange{margin-bottom:24px}
.chat-user{display:flex;flex-direction:column;align-items:flex-end;margin:0 0 12px auto;max-width:82%}
.chat-user-bubble{background:var(--chat-tint);color:var(--chat-ink);border-radius:15px 4px 15px 15px;padding:12px 17px;font-size:13px;line-height:1.8;white-space:pre-wrap;overflow-wrap:anywhere;text-align:left}
.chat-time{font-size:10px;color:var(--chat-muted);margin:6px 0 0}
.chat-reply-block{max-width:640px}
.chat-reply-head{display:flex;align-items:center;gap:8px;font-size:11px;color:var(--chat-muted);margin-bottom:8px}
.chat-reply-head .chat-time{margin:0 0 0 auto}
.chat-dot{width:8px;height:8px;border-radius:50%;background:var(--chat-accent);opacity:.65;flex-shrink:0}
.chat-reply-body{background:var(--chat-surface);border:1px solid var(--chat-line);border-radius:4px 15px 15px 15px;padding:15px 18px;font-size:13px;line-height:1.85}
.chat-reply-body p{margin:0;white-space:pre-wrap;overflow-wrap:anywhere}
.chat-reply-body strong{font-weight:600}
.chat-inline-code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em;background:var(--chat-tint);border-radius:5px;padding:1px 5px;overflow-wrap:anywhere}
.chat-code{overflow:auto;max-width:100%;background:var(--chat-tint);padding:12px;border-radius:8px;white-space:pre-wrap;overflow-wrap:anywhere}
.chat-management-action{display:block}
.chat-progress{color:var(--chat-muted)}
.chat-reply-error{color:#8a4b3a}
.chat-reply-uncertain{color:#7a5b23;background:#fbf3df;border-radius:8px;padding:10px 12px}
.chat-saved{display:inline-flex;margin-top:10px;font-size:10px;color:var(--chat-accent);background:var(--chat-tint);border-radius:20px;padding:5px 9px}
.chat-retry{margin-top:10px;border:1px solid var(--chat-line);background:var(--chat-surface);border-radius:8px;padding:7px 12px;font-size:12px;color:var(--chat-accent)}
.chat-composer-wrap{margin-top:auto;padding-top:14px}
.chat-suggestions{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:12px}
.chat-suggestions button{border:1px solid var(--chat-line);background:var(--chat-surface);border-radius:20px;padding:8px 12px;font-size:12px;color:var(--chat-accent);white-space:nowrap}
.chat-composer{background:var(--chat-surface);border:1px solid var(--chat-line);border-radius:15px;padding:12px 14px;box-shadow:0 8px 28px #273c2310}
.chat-composer textarea{display:block;width:100%;min-height:52px;max-height:180px;resize:vertical;border:0;background:none;color:var(--chat-ink);outline:none;font:inherit;font-size:13px;line-height:1.8}
.chat-composer textarea::placeholder{color:var(--chat-muted)}
.chat-composer-bottom{display:flex;align-items:center;gap:10px;justify-content:flex-end}
.chat-composer-bottom #chat-hint{margin-right:auto;font-size:10px;color:var(--chat-muted)}
.chat-composer-bottom #chat-count{font-size:10px;color:var(--chat-muted)}
.chat-count-over{color:#8a4b3a!important}
.chat-composer-bottom #chat-send{border:0;border-radius:9px;background:var(--chat-accent);color:#fff;padding:9px 18px;font-size:12px;min-width:60px}
.chat-composer-bottom #chat-send:disabled{opacity:.4;cursor:not-allowed}
.chat-status{font-size:11px;color:var(--chat-muted);line-height:1.7;margin:8px 0 0;min-height:18px}
.chat-caption{text-align:center;font-size:10px;color:var(--chat-muted);margin:8px 0 0}
.chat-aside{border-left:1px solid var(--chat-line);padding:26px 20px;min-width:0}
.chat-aside>.chat-eyebrow{margin-bottom:14px}
.chat-card{background:var(--chat-surface);border:1px solid var(--chat-line);border-radius:14px;padding:16px;margin-bottom:14px}
.chat-card-title{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:12px;font-weight:550;margin-bottom:10px}
.chat-card-title button{border:0;background:none;color:var(--chat-muted);font-size:10px;padding:2px 0}
.chat-summary-state{font-size:16px;font-weight:500;margin:0 0 4px}
.chat-summary-row{padding:9px 0;border-top:1px solid var(--chat-line)}
.chat-summary-row:first-child{border-top:0;padding-top:0}
.chat-summary-row strong{display:block;font-size:12px;font-weight:500;overflow-wrap:anywhere}
.chat-summary-row small{display:block;font-size:10px;color:var(--chat-muted);margin-top:3px;overflow-wrap:anywhere}
.chat-muted{font-size:11px;color:var(--chat-muted);line-height:1.7;margin:0}
.chat-link{display:inline-flex;margin-top:8px;border:1px solid var(--chat-line);background:var(--chat-tint);border-radius:8px;padding:7px 11px;font-size:11px;color:var(--chat-accent)}
.chat-note{font-size:10px;line-height:1.9;color:var(--chat-muted);padding:12px 4px}
#chat-space-dialog{width:min(440px,calc(100vw - 32px));padding:24px;border:1px solid var(--line);border-radius:18px;color:var(--green);box-shadow:0 24px 100px #20362e20}
#chat-space-dialog:focus,#chat-space-dialog:focus-visible,#workspace-dialog:focus,#workspace-dialog:focus-visible{outline:none}
#chat-space-dialog::backdrop{background:#20362e35;backdrop-filter:blur(3px)}
.chat-space-choice{display:flex;align-items:center;gap:10px;width:100%;margin:7px 0;padding:14px;border:1px solid var(--line);border-radius:11px;background:none;text-align:left;font-size:13px}
.chat-space-choice small{margin-left:auto;color:var(--muted);font-size:10px}
@media(max-width:1100px){
  .chat-layout{grid-template-columns:200px minmax(0,1fr)}
  .chat-aside{display:none}
  .chat-main{padding:24px 28px 16px}
}
@media(max-width:760px){
  body.chat-active header{padding:18px 20px 14px;margin-bottom:0}
  body.chat-active header .account .badge{display:none}
  .chat-layout{display:block;height:100%;min-height:0}
  .chat-side,.chat-aside{display:none}
  .chat-main{height:100%;min-height:0;padding:18px 16px 12px}
  .chat-head h1{font-size:24px;letter-spacing:-.7px}
  .chat-space-btn{display:inline-flex}
  .chat-user{max-width:88%}
  .chat-reply-block{max-width:100%}
  .chat-composer textarea{min-height:44px}
  .chat-suggestions button{font-size:11px;padding:8px 10px}
  .chat-composer-bottom #chat-send{padding:9px 15px}
}
@media(max-height:520px){
  .chat-head h1{font-size:19px;margin:4px 0}
  .chat-head>div>p:last-child{display:none}
  .chat-head{padding-bottom:8px}
  .chat-main{padding-top:10px}
  .chat-composer-wrap{padding-top:5px}
  .chat-composer textarea{min-height:36px}
}

/* One workspace: the conversation keeps its DOM and draft behind every
   management page; the page itself opens above it as a modal dialog. */
body.chat-active{position:fixed;top:var(--chat-viewport-top,0px);left:var(--chat-viewport-left,0px);right:auto;width:var(--chat-viewport-width,100%);height:var(--chat-viewport-height,100dvh);min-height:0;overflow:hidden}
body.chat-active header{padding:16px 28px;max-width:none;margin:0;flex:none}
body.chat-active nav[aria-label="主导航"]{display:flex;flex:none;width:100%;max-width:none;margin:0;gap:24px;padding:0 28px;min-height:44px;align-items:center}
body.chat-active nav button{padding:12px 0;white-space:nowrap}
body.chat-active #chat-nav{display:none}
body.chat-active main{display:block;min-height:0;overflow:hidden;padding:0;margin:0;width:100%;max-width:none}
body.chat-active #chat.page.active{display:flex;width:100%;height:100%;min-width:0;min-height:0;overflow:hidden}
body.chat-active main>.page:not(#chat){display:none}
body.chat-active .chat-layout{display:flex;flex:1;width:100%;max-width:1000px;border:0;min-height:0}
body.chat-active .chat-side,body.chat-active .chat-aside,body.chat-active #chat-space{display:none}
body.chat-active .chat-main{flex:1;width:100%;padding:18px 28px 16px;min-height:0}
body.chat-active .chat-head{padding-bottom:12px}
body.chat-active .chat-head h1{display:none}
body.chat-active .chat-eyebrow{font-size:14px;color:var(--chat-accent);margin-bottom:4px}
body.chat-active .chat-head p:last-child{font-size:12px}
body.chat-active .chat-body{overflow:hidden;min-height:0}
body.chat-active .chat-empty{padding:16px 0}
body.chat-active .chat-composer-wrap{flex:none;min-width:0;padding-top:8px}
body.chat-active .chat-composer textarea{font-size:16px;resize:none;max-height:120px;min-height:44px;overflow-y:auto}
body.chat-active .chat-composer-bottom{min-height:34px}
body.chat-active .chat-composer{background:#fff;border:1.5px solid #8eaa96;box-shadow:0 6px 24px #294c3610;transition:border-color 140ms ease,box-shadow 140ms ease}
body.chat-active .chat-composer:focus-within{border-color:#355f42;box-shadow:0 0 0 3px #426e4e20,0 8px 24px #294c3610}
body.chat-active .chat-composer textarea::placeholder{color:#647d6a;opacity:1}
body.chat-active .chat-composer-bottom #chat-send:disabled{opacity:1;background:#78917f;color:#fff}
body.chat-active .chat-empty strong{display:block;font-size:17px;color:#365340;font-weight:550;margin-bottom:5px}
body.chat-active .chat-empty p{font-size:13px;color:#7a867c}
body.chat-active nav button .workspace-nav-arrow{display:inline-block;width:6px;height:6px;margin:0 2px 3px 9px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg)}

/* Management pages open in a modal over the conversation. */
#workspace-dialog{width:min(760px,92vw);height:min(680px,calc(100dvh - 120px));max-height:calc(100dvh - 120px);margin:auto;padding:0;border:1px solid #dce4d9;border-radius:20px;background:#fdfefa;color:var(--green);box-shadow:0 30px 90px #20362e33;overflow:hidden}
#workspace-dialog[open]{display:flex;flex-direction:column}
#workspace-dialog::backdrop{background:#20362e35;backdrop-filter:blur(3px)}
.workspace-dialog-head{flex:none;padding:10px 28px 0;border-bottom:1px solid var(--line)}
.workspace-dialog-titlebar{display:flex;align-items:center;gap:22px}
.workspace-dialog-head h2{font-size:16px;font-weight:600;margin:0;letter-spacing:0}
.workspace-dialog-tabs{display:flex;flex:1;gap:22px}
.workspace-dialog-tabs button{position:relative;border:0;background:none;padding:12px 0 13px;color:var(--muted);font-size:12px}
.workspace-dialog-tabs button:hover{color:var(--green)}
.workspace-dialog-tabs button.active{color:var(--green);font-weight:600}
.workspace-dialog-tabs button.active:after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:#486b47}
#workspace-dialog-close{margin-left:auto;border:0;background:none;color:var(--muted);font-size:12px;padding:10px 0 10px 12px;min-height:44px}
.workspace-dialog-body{flex:1;min-height:0;overflow:auto;overscroll-behavior:contain;padding:26px 32px 34px}
#workspace-dialog .page h1{font-size:26px;letter-spacing:-.5px;line-height:1.35;margin:0 0 10px}
#workspace-dialog .hero{margin-bottom:24px}
#workspace-dialog .eyebrow{margin-bottom:10px}
#workspace-dialog .grid,#workspace-dialog .split{grid-template-columns:minmax(0,1fr);gap:18px}
#workspace-dialog .intro{padding-top:0}
#workspace-dialog .summary{flex-wrap:wrap;padding:16px}
#workspace-dialog .metrics{gap:20px;flex-wrap:wrap}
#workspace-dialog .row{flex-wrap:wrap}
#workspace-dialog .row{padding:14px 0}
#workspace-dialog .connection-actions button{font-size:13px;padding:9px 13px;min-height:38px}
#workspace-dialog .connection-actions .quiet{font-size:13px;padding:9px 8px}
#workspace-dialog .panel{padding:22px}
#workspace-dialog .titleblock{margin-bottom:20px}
@media(prefers-reduced-motion:no-preference){
  #workspace-dialog[open]{animation:workspace-dialog-in 180ms cubic-bezier(.2,.8,.2,1)}
  #workspace-dialog[open]::backdrop{animation:workspace-backdrop-in 160ms ease-out}
}
@keyframes workspace-dialog-in{from{opacity:0;transform:translateY(8px) scale(.99)}to{opacity:1;transform:none}}
@keyframes workspace-backdrop-in{from{opacity:0}to{opacity:1}}
@media(max-width:760px){
  body.chat-active header{padding:10px 16px}
  body.chat-active header .brand{font-size:22px}
  body.chat-active nav[aria-label="主导航"]{padding:0 16px;gap:12px;min-height:42px;flex-wrap:wrap;overflow:visible}
  body.chat-active nav button{font-size:13px;padding:10px 0}
  body.chat-active #chat-nav{font-size:11px}
  body.chat-active .chat-main{height:auto;padding:12px 16px max(8px,env(safe-area-inset-bottom));min-height:0}
  body.chat-active .chat-head{padding-bottom:7px}
  body.chat-active .chat-head p:last-child{display:none}
  body.chat-active .chat-scroll{padding-top:6px;overflow-x:hidden}
  body.chat-active .chat-suggestions{gap:5px;margin-bottom:7px}
  body.chat-active .chat-suggestions button{padding:6px 9px}
  /* Mobile density: one compact header row, no second navigation row, and a
     single-line composer until the user actually types. */
  body.chat-active nav[aria-label="主导航"]{display:none}
  body.chat-active .chat-head{display:none}
  body.chat-active #chat-space{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--chat-line);background:var(--chat-surface);border-radius:9px;padding:7px 11px;font-size:12px;white-space:nowrap}
  body.chat-has-messages .chat-suggestions{display:none}
  body.chat-active .chat-composer-wrap{padding-top:6px}
  body.chat-active .chat-composer{position:relative;padding:7px 10px}
  body.chat-active .chat-composer textarea{height:44px;min-height:44px;font-size:16px;line-height:1.5;padding:2px 62px 2px 0}
  body.chat-active .chat-composer-bottom{position:absolute;right:8px;bottom:5px;min-height:0;gap:6px}
  body.chat-active .chat-composer-bottom #chat-send{padding:8px 15px;font-size:13px}
  body.chat-active #chat-count{display:none}
  body.chat-active #chat-hint{display:none}
  body.chat-active .chat-caption{display:none}
  body.chat-active .chat-exchange{margin-bottom:14px}
  body.chat-active .chat-reply-body{padding:12px 14px}
  body.chat-active .chat-reply-body p{line-height:1.7}
  body.chat-active .chat-user-bubble{padding:10px 14px}
  /* On a phone the assistant reads as text, not as a card: the border and
     padding cost about 40px per exchange and add nothing. */
  body.chat-active .chat-reply-body{background:none;border:0;padding:0}
  body.chat-active .chat-reply-head{margin-bottom:4px}
  body.chat-active .chat-reply-block{max-width:100%}
  body.chat-active.chat-keyboard .chat-head,body.chat-active.chat-keyboard .chat-suggestions{display:none}
  body.chat-active.chat-keyboard header{padding-top:5px;padding-bottom:5px}
  body.chat-active.chat-keyboard .chat-main{padding-top:4px}
  body.chat-active .chat-empty strong{font-size:15px}
  body.chat-active .chat-empty p{font-size:12px}
  #workspace-dialog{position:fixed;top:var(--chat-viewport-top,0px);left:var(--chat-viewport-left,0px);width:var(--chat-viewport-width,100vw);max-width:var(--chat-viewport-width,100vw);height:var(--chat-viewport-height,100dvh);max-height:var(--chat-viewport-height,100dvh);margin:0;border:0;border-radius:0}
  .workspace-dialog-head{padding:max(4px,env(safe-area-inset-top)) 16px 0}
  .workspace-dialog-tabs{gap:16px}
  .workspace-dialog-body{padding:20px 18px max(28px,env(safe-area-inset-bottom))}
  #workspace-dialog .page h1{font-size:23px;text-wrap:balance}
  #workspace-dialog h1 br{display:inline}
  #workspace-dialog .panel{padding:20px}
}
@media(max-height:560px){
  body.chat-active .chat-head,body.chat-active .chat-suggestions{display:none}
  body.chat-active .chat-composer-wrap{padding-top:4px}
}
@media(prefers-reduced-motion:reduce){
  body.chat-active main>.page.active:not(#chat),body.chat-active .chat-composer{transition:none}
}

/* Help and account details are destinations, with normal document scrolling. */
header .account>button.active,#account-action.active{color:var(--green);font-weight:650}
body.utility-page header{max-width:none;padding:16px 28px}
body.utility-page nav[aria-label="主导航"]{max-width:none;padding:0 28px;gap:24px}
body.utility-page #visit-notice{display:none}
body.utility-page main{max-width:1056px;min-height:calc(100dvh - 200px);padding:32px 28px 48px}
body.utility-page .utility-back{display:block;margin:0 0 24px}
body.utility-page #help .faq-panel{max-width:none}
body.utility-page #settings .account-card{max-width:none}
#settings #account-logout-action{margin-top:24px}
@media(max-width:760px){
  body.utility-page header{padding:16px}
  body.utility-page nav[aria-label="主导航"]{padding:0 16px;gap:24px}
  body.utility-page #visit-notice{display:none}
body.utility-page main{padding:24px 16px 36px}
  body.utility-page .panel{padding:20px}
  header .account{gap:12px}
  body.utility-page header .account>.badge{display:none}
}