:root{--ink:#202a3d;--muted:#768199;--line:#e3e8f1;--blue:#5374d7;--bg:#f3f5fa;--white:#fff;--wash:#eaf0ff;--green:#3a8b7a;--amber:#b5833d;--red:#bd7772}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.55 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;overflow-wrap:anywhere}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #a6b9fb;outline-offset:2px}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
.boot{display:grid;place-items:center;min-height:100vh;color:var(--muted)}

/* login */
.login-wrap{min-height:100vh;display:grid;place-items:center;padding:20px}
.login-card{width:100%;max-width:400px;padding:28px}
.login-card h1{font-size:22px;margin:6px 0 8px;letter-spacing:-.03em}
.login-brand{padding:0 0 18px}
.field{display:block;margin:14px 0}
.field span{display:block;font-size:12px;color:#526178;margin-bottom:5px}
.field input,.field select,.field textarea,#urlInput,.toolbar input{width:100%;border:1px solid var(--line);border-radius:8px;padding:10px 11px;background:#fff;outline:0}
.field input:focus,.field select:focus,.field textarea:focus,.toolbar input:focus{border-color:#aebfe9}
.field textarea{resize:vertical;min-height:110px;line-height:1.6}
.wide{width:100%}

/* layout */
.layout{min-height:100vh;display:grid;grid-template-columns:216px minmax(0,1fr)}
.sidebar{position:sticky;top:0;height:100vh;background:#fbfcff;border-right:1px solid var(--line);display:flex;flex-direction:column;padding:25px 15px;overflow:auto}
.brand{display:flex;align-items:center;gap:10px;padding:0 7px 29px}
.mark{display:grid;place-items:center;width:35px;height:35px;border-radius:11px;background:var(--blue);color:#fff;font-weight:700;font-size:18px}
.brand b{font-size:15px;letter-spacing:-.04em}
.brand small{display:block;color:var(--muted);font-size:10px;letter-spacing:.08em}
.section-label{font-size:10px;letter-spacing:.09em;color:#9ba5b5;margin:14px 10px 8px}
.nav{border:0;background:none;color:#78849a;text-align:left;border-radius:9px;padding:10px 11px;width:100%;margin:2px 0;display:flex;align-items:center;gap:11px}
.nav:hover,.nav.active{background:var(--wash);color:#405fb9;font-weight:600}
.ico{font-size:15px;width:19px;text-align:center}
.side-bottom{margin-top:auto;border-top:1px solid var(--line);padding:16px 4px 0;color:var(--muted);font-size:11px;display:grid;gap:12px}
.avatar{width:30px;height:30px;background:#dfe7fb;color:#4b68b1;border-radius:50%;display:grid;place-items:center;font-size:11px;font-weight:700;flex:none}
.person{display:flex;gap:9px;align-items:center}
.person b{color:#62718a}
.content{min-width:0}
.topbar{height:66px;background:rgba(255,255,255,.75);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 34px;gap:12px}
.crumb{font-size:12px;color:var(--muted);min-width:0}
.crumb b{color:var(--ink);font-weight:600}
.sep{padding:0 8px;color:#c5ccda}
.topright{display:flex;align-items:center;gap:10px}
.badge{font-size:10px;color:#8b7139;background:#fbf4e4;padding:5px 9px;border-radius:6px;white-space:nowrap}
.badge.neutral{color:#5773be;background:#edf2ff}
.page{display:none;max-width:1400px;margin:auto;padding:36px 36px 55px}
.page.active{display:block}
.eyebrow{font-size:11px;letter-spacing:.1em;color:var(--blue);font-weight:700;margin-bottom:8px}
.head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:23px}
.head h1{font-size:27px;letter-spacing:-.045em;line-height:1.2;margin:0 0 8px}
.head p{margin:0;color:var(--muted);font-size:13px}

/* controls */
.button{border:1px solid var(--line);background:#fff;border-radius:8px;padding:8px 13px;color:#526178;font-size:12px;white-space:nowrap;display:inline-block;text-align:center}
a.button:hover{text-decoration:none}
.button:hover{border-color:#aebfe9}
.button.primary{background:var(--blue);color:#fff;border-color:var(--blue)}
.button.subtle{background:#eef2fa}
.button.danger{color:#a65a55}
.button:disabled{opacity:.45;cursor:not-allowed}
.button.small{padding:4px 9px;font-size:11px}
.grid{display:grid;gap:16px}
.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.dashboard{grid-template-columns:minmax(0,1.6fr) minmax(270px,1fr)}
.spaced{margin-top:16px}
.spaced-b{margin-bottom:18px}
.card{background:var(--white);border:1px solid #e9edf4;border-radius:12px;padding:20px;min-width:0}
.card-title{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:16px;flex-wrap:wrap}
.card-title h2,.card-title h3{margin:0;font-size:14px;letter-spacing:-.02em}
.card.login-card{padding:28px}
.muted{color:var(--muted)}
.tiny{font-size:11px}
.small{font-size:12px}
.pill{display:inline-flex;align-items:center;gap:5px;border-radius:5px;padding:3px 7px;background:#f1f4f9;color:#77839a;font-size:10px;white-space:nowrap}
.pill.blue{background:#edf2ff;color:#5773be}
.pill.amber{background:#fbf3e5;color:#a67a38}
.pill.green{background:#ebf7f2;color:#52937d}
.pill.red{background:#fcf0ef;color:#bd7772}
.hero{background:#e8eefc;border-color:#e3eafa;padding:23px}
.hero h2{font-size:19px;margin:0 0 8px;letter-spacing:-.03em}
.hero p{max-width:530px;color:#7281a0;font-size:12px;line-height:1.8;margin:0 0 17px}
.hero .button{margin:0 6px 6px 0}
.metric{font-size:22px;font-weight:650;letter-spacing:-.04em;margin:7px 0 3px}
.small-metric{font-size:18px}
.stat{padding:12px;border:1px solid var(--line);border-radius:9px;background:#fafbff}
.stat .metric{margin:3px 0 0}
.stack{display:grid;gap:9px;align-content:start}
.dashboard>.stack{gap:16px}
.entry{display:flex;align-items:flex-start;gap:11px;padding:12px 0;border-bottom:1px solid #f0f2f6}
.entry:last-child{border-bottom:0}
.entry .body{flex:1;min-width:0}
.entry b{display:block;font-size:12px;font-weight:600}
.entry p{font-size:11px;color:var(--muted);margin:4px 0 0;white-space:pre-wrap}
.entry .meta{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px;align-items:center}
.dot{height:8px;width:8px;flex:none;border-radius:50%;background:#a7b7e5;margin-top:6px}
.actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.chips{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}
.topic{padding:12px;border:1px solid var(--line);border-radius:9px;background:#fff;color:#53627b;text-align:left;font-size:12px}
.topic:hover{background:#f6f8ff;border-color:#c9d5fa}
.notice{background:#fbf6e9;color:#927341;border:1px solid #f1e8d1;border-radius:9px;padding:11px 13px;font-size:12px;line-height:1.7;margin-bottom:16px}
.notice.error{background:#fcf0ef;border-color:#f0d6d3;color:#a65a55}
.notice.ok{background:#ebf7f2;border-color:#d3eadf;color:#3f7a66}
.help{padding:12px;background:#f5f7fc;border-radius:8px;line-height:1.7;font-size:11px;color:#76839a;margin:12px 0}
.empty{padding:18px;text-align:center;color:var(--muted);font-size:12px;border:1px dashed var(--line);border-radius:9px;background:#fafbff}
.empty.error{color:#a65a55;border-color:#f0d6d3;background:#fcf6f5}

/* chat */
.chat-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:16px}
.chatbox{min-height:520px;display:flex;flex-direction:column}
.chatfeed{flex:1;min-height:280px;max-height:60vh;overflow:auto;padding-right:2px;margin-bottom:12px}
.message{padding:14px 15px;margin-bottom:12px;font-size:12px;line-height:1.8;max-width:90%;border-radius:10px;white-space:pre-wrap;position:relative}
.message.user{margin-left:auto;background:#edf2ff}
.message.ai{background:#f7f9fc;border:1px solid #eef1f6}
.message.err{background:#fcf0ef;border:1px solid #f0d6d3;color:#a65a55}
.message.pending{color:var(--muted)}
.message.picked{outline:2px solid #9fb2ef}
.message .pick{display:flex;align-items:center;gap:6px;font-size:11px;color:var(--muted);margin-bottom:8px;white-space:normal}
.message .who{font-size:10px;color:var(--muted);letter-spacing:.05em;margin-bottom:4px}
.source{margin-top:10px;display:flex;gap:6px;flex-wrap:wrap;white-space:normal}
.composer{border:1px solid #dfe6f2;border-radius:10px;padding:11px;background:#fff}
.composer textarea{border:0;outline:0;resize:vertical;width:100%;min-height:48px;background:transparent}
.composer-bottom{display:flex;justify-content:space-between;align-items:center;gap:10px}
.convlist{display:grid;gap:6px;max-height:300px;overflow:auto}
.conv{border:1px solid var(--line);background:#fff;border-radius:8px;padding:9px 10px;text-align:left;font-size:12px;color:#53627b}
.conv:hover{background:#f6f8ff}
.conv.active{background:var(--wash);border-color:#c9d5fa;color:#405fb9;font-weight:600}
.conv small{display:block;color:var(--muted);font-weight:400;font-size:10px;margin-top:2px}

/* tables / lists */
.toolbar{display:flex;gap:12px;align-items:center;margin-bottom:14px;flex-wrap:wrap}
.toolbar input{max-width:320px}
.filter{display:flex;gap:6px;flex-wrap:wrap}
.filter button{border:0;background:#eef1f7;color:#758096;padding:6px 11px;border-radius:7px;font-size:11px}
.filter button.active{background:#e8efff;color:#5069b7}
.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse;text-align:left;font-size:12px}
th{color:#9aa5b6;font-size:10px;font-weight:500;padding:10px;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:14px 10px;border-bottom:1px solid #f1f3f7;vertical-align:top}
td.title{min-width:200px;font-weight:600}
tr:last-child td{border-bottom:0}
details.content-d summary{cursor:pointer;color:var(--blue);font-size:11px;font-weight:400;margin-top:4px}
details.content-d pre{margin:8px 0 0;white-space:pre-wrap;font:inherit;font-size:12px;font-weight:400;color:#46536b;background:#f7f9fc;border-radius:8px;padding:10px}
pre.doc{white-space:pre-wrap;background:#f7f9fc;border-radius:8px;padding:12px;max-height:45vh;overflow:auto;font-size:12px}

/* flywheel */
.flywheel{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.fly{background:#f6f8fd;border:1px solid #ecf0f7;padding:17px;border-radius:10px;min-height:160px}
.fly .n{font-size:10px;color:#9aaad5;letter-spacing:.12em}
.fly h3{font-size:14px;margin:10px 0}
.fly p{font-size:11px;color:#7d8aa0;margin:0;line-height:1.8}
.loopline{margin:16px 0 10px}
.stage{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.stage span{padding:8px 11px;background:#f3f6fd;border-radius:7px;font-size:11px;color:#687893}
.stage i{font-style:normal;color:#b6c3da}

/* yc */
.tabline{display:flex;gap:20px;border-bottom:1px solid var(--line);margin-bottom:20px;overflow:auto}
.tabline button{background:none;border:0;padding:0 0 11px;color:#8b97aa;font-size:12px;white-space:nowrap}
.tabline button.active{color:var(--blue);border-bottom:2px solid var(--blue);font-weight:600}
.check{width:18px;height:18px;border:1px solid #c9d4e6;background:#fff;border-radius:5px;flex:none;padding:0;margin-top:2px}
.check.done{background:#e4ecff;border-color:#9fb2ef}
.check.done:after{content:'✓';color:#5975bf;font-size:11px;display:block;line-height:16px}
.entry.done b{text-decoration:line-through;color:var(--muted)}
select.mini{border:1px solid var(--line);border-radius:6px;padding:3px 6px;font-size:11px;background:#fff;max-width:150px}

/* upload */
.upload-zone{border:1px dashed #bdcbed;border-radius:10px;padding:26px 16px;text-align:center;background:#fafbff;margin-bottom:6px}
.upload-icon{font-size:23px;color:#9aafe7}
.upload-zone input{max-width:100%;margin-top:15px}

/* modal + toast */
.modal-back{position:fixed;inset:0;background:rgba(32,42,61,.38);display:grid;place-items:center;padding:16px;z-index:20}
.modal{background:#fff;border-radius:14px;width:100%;max-width:560px;max-height:calc(100vh - 32px);overflow:auto;padding:22px;box-shadow:0 20px 50px rgba(32,42,61,.2)}
.modal h2{margin:0 0 4px;font-size:16px;letter-spacing:-.02em}
.modal .actions{justify-content:flex-end;margin-top:16px}
.toast{position:fixed;right:22px;bottom:22px;background:#24334d;color:#fff;padding:11px 15px;border-radius:8px;font-size:12px;opacity:0;pointer-events:none;transition:opacity .2s;z-index:30;max-width:calc(100vw - 44px)}
.toast.show{opacity:1}
.toast.bad{background:#8a3f3a}
.mobile-nav{display:none}

@media(max-width:950px){
  .chat-layout,.dashboard{grid-template-columns:1fr}
  .cols-3{grid-template-columns:1fr 1fr}
  .flywheel{grid-template-columns:1fr}
  .fly{min-height:0}
  .layout{grid-template-columns:180px minmax(0,1fr)}
  .page{padding:28px 22px 50px}
  .topbar{padding:0 22px}
}
@media(max-width:650px){
  .layout{display:block}
  .sidebar{display:none}
  .topbar{height:58px;padding:0 14px}
  .topright .badge.neutral{display:none}
  .page{padding:22px 14px 90px}
  .head{align-items:flex-start;flex-direction:column;gap:12px}
  .head h1{font-size:23px}
  .cols-3,.cols-2{grid-template-columns:1fr}
  .mobile-nav{display:flex;position:fixed;bottom:0;left:0;right:0;z-index:10;background:#fff;border-top:1px solid var(--line);justify-content:space-around;padding:7px 3px max(8px,env(safe-area-inset-bottom))}
  .mobile-nav[hidden]{display:none!important}
  .mobile-nav button{border:0;background:transparent;color:#8995a9;font-size:10px;padding:3px 4px;flex:1}
  .mobile-nav button.active{color:var(--blue);font-weight:700}
  .mobile-nav b{display:block;font-size:15px;font-weight:400}
  .chatbox{min-height:440px}
  .chatfeed{max-height:55vh}
  .message{max-width:100%}
  .metric{font-size:20px}
  .topbar .crumb{overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
  .card{padding:16px}
  .toolbar input{max-width:none}
  .toast{right:14px;left:14px;bottom:76px}
  .modal{padding:18px}
  /* tables become stacked cards on phones */
  table.stackable thead{display:none}
  table.stackable,table.stackable tbody,table.stackable tr,table.stackable td{display:block;width:100%}
  table.stackable tr{border:1px solid #eef1f6;border-radius:9px;padding:6px 8px;margin-bottom:10px}
  table.stackable td{border:0;padding:5px 2px}
  table.stackable td[data-label]:before{content:attr(data-label) "：";color:#9aa5b6;font-size:10px}
  table.stackable td.title{min-width:0}
}

/* ---- v2 additions: invite/login, admin, audit, records ---- */
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;padding:0;margin:-1px}
.link-btn{border:0;background:none;color:var(--blue);margin-top:6px}
.link-btn:hover{background:#f3f6fd}
.check-row{display:flex;gap:9px;align-items:flex-start;font-size:12px;color:#526178;margin:12px 0;line-height:1.6}
.check-row input{margin-top:3px;flex:none;width:16px;height:16px}
.small-input{width:100%;border:1px solid var(--line);border-radius:8px;padding:10px 11px;background:#fff;outline:0}
.pill.dark{background:#e7ebf4;color:#4b5a76}
.pill.wine{background:#f6ebf0;color:#9a5a72}
.rowline{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.person-row{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,2fr);gap:10px;padding:13px 0;border-bottom:1px solid #f0f2f6}
.person-row:last-child{border-bottom:0}
.person-row .who-name{font-weight:600;font-size:13px}
.person-row .row-actions{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.kv{display:grid;grid-template-columns:auto minmax(0,1fr);gap:4px 10px;font-size:12px;margin:8px 0}
.kv dt{color:var(--muted)}
.kv dd{margin:0}
.token-box{width:100%;min-height:74px;border:1px solid #d9c9a0;background:#fffaf0;border-radius:8px;padding:10px;font:12px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace;resize:none;word-break:break-all}
.audit-row{padding:11px 0;border-bottom:1px solid #f0f2f6;font-size:12px}
.audit-row:last-child{border-bottom:0}
.audit-row .when{color:var(--muted);font-size:11px}
.audit-row code{background:#f3f6fd;border-radius:4px;padding:1px 5px;font-size:11px}
.audit-row .detail{color:#5a6880;margin-top:3px;white-space:pre-wrap}
.msg-readonly .message{max-width:100%}
.modal.wide{max-width:760px}
.modal pre.doc{max-height:50vh}
.history{margin:10px 0 0;padding:0;list-style:none;font-size:11px;color:#6b7893}
.history li{padding:3px 0;border-bottom:1px dashed #eef1f6}
.cite{display:inline-block;font-size:10px;color:#5773be;background:#edf2ff;border-radius:4px;padding:0 5px;margin-right:4px}
.cite.off{color:#8b94a7;background:#f1f4f9}
.tools{display:flex;gap:6px;flex-wrap:wrap;margin-top:9px}
.sheet-list{display:grid;gap:8px}
.sheet-list .button{text-align:left;padding:13px}
.conv-wrap{display:flex}
.conv-wrap .conv{flex:1;min-width:0}

@media(max-width:650px){
  input,select,textarea,.field input,.field select,.field textarea,.toolbar input,.composer textarea,select.mini{font-size:16px}
  .person-row{grid-template-columns:1fr}
  .modal.wide{max-width:none;min-height:calc(100vh - 32px)}
  .modal-back{padding:8px;align-items:end}
  .modal{max-height:calc(100vh - 16px)}
  .button{padding:10px 14px}
  .button.small{padding:7px 11px}
  .tabline button,.filter button{padding-top:8px;padding-bottom:8px}
  .head .actions{width:100%}
  .login-card{padding:22px 18px}
  .kv{grid-template-columns:1fr}
  .chat-layout{display:flex;flex-direction:column}
  .chat-layout>.stack{order:2}
}