html,body{height:100%}
body{background:var(--paper);overflow:hidden}
.app{display:grid;grid-template-columns:256px 340px 1fr 304px;height:100vh}
.app>*{min-width:0;min-height:0}
/* Sidebar */
.side{background:#F3F1EB;border-right:1px solid var(--line);display:flex;flex-direction:column;padding:18px 14px}
.side .logo{padding:2px 8px 18px;font-size:20px}
.side .logo svg{width:28px;height:28px}
.biz{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:12px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--sh-1);margin-bottom:18px}
.biz .bav{width:30px;height:30px;border-radius:8px;background:#22313F;color:#fff;font-weight:800;font-size:12px;display:grid;place-items:center}
.biz b{font-size:14px;display:block;line-height:1.2}
.biz small{font-size:12px;color:var(--muted)}
.biz .i{margin-left:auto;color:var(--faint);width:16px;height:16px}
.side nav{display:grid;gap:2px}
.side .sec{font-size:11.5px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--faint);padding:16px 10px 6px}
.nv{white-space:nowrap;display:flex;align-items:center;gap:11px;height:38px;padding:0 10px;border-radius:10px;font-size:14.5px;font-weight:550;color:var(--ink-2)}
.nv .i{width:18px;height:18px;color:#7A8394}
.nv:hover{background:rgba(20,26,36,.04)}
.nv.on{background:var(--surface);color:var(--ink);font-weight:650;box-shadow:var(--sh-1);border:1px solid var(--line)}
.nv.on .i{color:var(--brand-700)}
.nv .cnt{margin-left:auto;font-size:12px;font-weight:700;min-width:22px;height:20px;padding:0 6px;border-radius:999px;display:grid;place-items:center;background:var(--brand-700);color:#fff}
.nv .cnt.soft{background:var(--line);color:var(--ink-2)}
.nv .new{margin-left:auto;font-size:10.5px;font-weight:750;color:var(--hot-700);background:var(--hot-bg);padding:2px 7px;border-radius:999px;border:1px solid var(--hot-line)}
.trial{margin-top:auto;padding:14px;border-radius:14px;background:var(--surface);border:1px solid var(--line)}
.trial b{font-size:13.5px;display:flex;justify-content:space-between}
.trial b span{color:var(--muted);font-weight:600}
.bar{height:6px;border-radius:999px;background:var(--sunken);margin:10px 0 10px;overflow:hidden}
.bar i{display:block;height:100%;width:23%;background:var(--brand-500);border-radius:inherit}
.trial a{font-size:13px;font-weight:650;color:var(--brand-700)}
.me{display:flex;align-items:center;gap:10px;padding:14px 6px 0}
.me .av{width:32px;height:32px;font-size:12px;background:var(--team)}
.me>div{min-width:0}.me b{font-size:13.5px;display:block;line-height:1.2}
.me small{font-size:12px;color:var(--muted);display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* List */
.list{background:var(--surface);border-right:1px solid var(--line);display:flex;flex-direction:column}
.list-head{padding:18px 18px 12px}
.list-head .row{display:flex;align-items:center;justify-content:space-between}
.list-head h1{font-size:22px;margin:0;letter-spacing:-.02em}
.iconbtn{width:34px;height:34px;border-radius:10px;border:1px solid var(--line);background:var(--surface);display:grid;place-items:center;color:var(--ink-2)}
.iconbtn .i{width:17px;height:17px}
.search{margin-top:14px;display:flex;align-items:center;gap:8px;height:38px;padding:0 12px;border-radius:10px;background:var(--sunken);color:var(--faint);font-size:14px}
.search .i{width:16px;height:16px}
.tabs{display:flex;gap:4px;padding:0 14px 10px;border-bottom:1px solid var(--line)}
.tab{white-space:nowrap;height:32px;padding:0 11px;border-radius:9px;font-size:13.5px;font-weight:600;color:var(--muted);display:flex;align-items:center;gap:6px}
.tab.on{background:var(--ink);color:#fff}
.tab small{font-size:11.5px;opacity:.75}
.convs{overflow:auto;flex:1}
.cv{display:grid;grid-template-columns:40px 1fr;gap:12px;padding:14px 18px;border-bottom:1px solid #F1EEE8;position:relative}
.cv.on{background:var(--brand-50)}
.cv.on::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:0 3px 3px 0;background:var(--brand-700)}
.cv .av{width:40px;height:40px;font-size:14px}
.cv .top{display:flex;align-items:baseline;gap:8px}
.cv .top b{font-size:14.5px;letter-spacing:-.005em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cv.unread .top time{margin-right:16px;color:var(--brand-700);font-weight:600}
.cv .top time{margin-left:auto;font-size:12px;color:var(--faint);white-space:nowrap}
.cv p{margin:2px 0 8px;font-size:13.5px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cv.unread p{color:var(--ink);font-weight:550}
.cv .tags{display:flex;gap:6px;flex-wrap:wrap}
.cv .tags .badge{height:22px;font-size:12px;padding:0 8px}
.unread-dot{position:absolute;right:18px;top:21px;width:9px;height:9px;border-radius:50%;background:var(--brand-500)}

/* Chat */
.chat{display:flex;flex-direction:column;background:var(--paper)}
.chat-head{height:72px;padding:0 24px;display:flex;align-items:center;gap:14px;border-bottom:1px solid var(--line);background:var(--surface)}
.chat-head .av{width:40px;height:40px;font-size:14px}
.chat-head .who{flex:1;min-width:0}
.chat-head .who b{font-size:16px;letter-spacing:-.01em;display:flex;align-items:center;gap:8px;white-space:nowrap}
.chat-head .who small{font-size:12.5px;color:var(--muted);display:flex;gap:6px;align-items:center;white-space:nowrap;overflow:hidden}
.chat-head .who small .dot{width:6px;height:6px;color:var(--ok)}
.back{display:none}
.mode{margin-left:auto;display:flex;align-items:center;gap:10px;flex:none}
.mode label{font-size:12.5px;color:var(--muted);font-weight:600}
.seg{display:flex;padding:3px;border-radius:12px;background:var(--sunken);border:1px solid var(--line)}
.seg span{height:32px;padding:0 12px;display:flex;align-items:center;gap:7px;font-size:13.5px;font-weight:650;border-radius:9px;color:var(--muted);white-space:nowrap}
.seg span .i{width:15px;height:15px}
.seg .on-ai{background:var(--surface);color:var(--brand-700);box-shadow:var(--sh-1)}
.seg .on-team{background:var(--team);color:#fff;box-shadow:0 1px 2px rgba(59,63,158,.4)}
.thread{flex:1;overflow:auto;padding:26px 32px 12px;display:flex;flex-direction:column;gap:6px}
.day{align-self:center;font-size:12px;font-weight:600;color:var(--faint);margin:4px 0 10px}
.event{align-self:center;display:flex;align-items:center;gap:7px;font-size:12.5px;color:var(--ink-2);background:var(--surface);border:1px solid var(--line);padding:5px 12px;border-radius:999px;margin:12px 0}
.event .i{width:14px;height:14px;color:var(--team)}
.event.lead .i{color:var(--hot)}
.m{max-width:62%;display:flex;flex-direction:column;gap:4px;margin-top:6px}
.m .b{padding:10px 14px;border-radius:16px;font-size:14.5px;line-height:1.5}
.m .meta{font-size:11.5px;color:var(--faint);display:flex;align-items:center;gap:6px}
.m .meta .i{width:12px;height:12px}
.m.vis{align-self:flex-start}
.m.vis .b{background:var(--surface);border:1px solid var(--line);border-bottom-left-radius:6px}
.m.ai,.m.team{align-self:flex-end;align-items:flex-end}
.m.ai .b{background:var(--brand-50);border:1px solid var(--brand-200);color:var(--brand-950);border-bottom-right-radius:6px}
.m.ai .meta{color:var(--brand-700);font-weight:600}
.m.team .b{background:var(--team);color:#fff;border-bottom-right-radius:6px}
.m.team .meta{color:var(--team-700);font-weight:600}
.composer{margin:8px 24px 20px;background:var(--surface);border:1.5px solid var(--team-line);border-radius:16px;box-shadow:var(--sh-2)}
.composer .who{display:flex;align-items:center;gap:8px;padding:10px 14px 0;font-size:12.5px;color:var(--team-700);font-weight:650}
.composer .who .i{width:14px;height:14px}
.composer textarea{width:100%;border:0;outline:0;resize:none;padding:8px 14px;font-size:14.5px;height:52px;background:transparent}
.composer .tools{display:flex;align-items:center;gap:6px;padding:0 10px 10px}
.composer .tools .iconbtn{border:0;width:32px;height:32px;color:var(--muted)}
.composer .tools .hint{font-size:12px;color:var(--faint);margin-left:4px}
.composer .tools .btn{margin-left:auto;background:var(--team)}
.composer .tools .btn:hover{background:var(--team-700)}

/* Details */
.details{background:var(--surface);border-left:1px solid var(--line);overflow:auto;padding:20px}
.lead-card{border-radius:16px;border:1px solid var(--hot-line);background:linear-gradient(180deg,#FFF6EF,#fff 70%);padding:18px}
.lead-card .top{display:flex;justify-content:space-between;align-items:center}
.score{font-size:12.5px;color:var(--hot-700);font-weight:700}
.lead-card h2{font-size:19px;margin:14px 0 2px;letter-spacing:-.02em}
.lead-card .need{font-size:13.5px;color:var(--ink-2);margin:0}
.kv{display:grid;gap:10px;margin:16px 0;font-size:13.5px}
.kv div{display:flex;align-items:center;gap:10px;color:var(--ink-2)}
.kv .i{width:16px;height:16px;color:var(--muted)}
.kv a{color:var(--ink);font-weight:600}
.summary{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 14px;font-size:13.5px;color:var(--ink-2);line-height:1.5}
.summary b{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--brand-700);margin-bottom:4px}
.summary b .i{width:13px;height:13px}
.actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:14px}
.actions .btn{height:38px;font-size:14px}
.panel-sec{margin-top:22px}
.panel-sec h3{font-size:12px;letter-spacing:.07em;text-transform:uppercase;color:var(--faint);margin:0 0 10px}
.panel-sec .kv{margin:0}
.panel-sec .note{font-size:13.5px;color:var(--muted);border:1px dashed var(--line-2);border-radius:12px;padding:12px}

/* Phone tab bar */
.tabbar{display:none}

@media (max-width:1280px){ .app{grid-template-columns:232px 320px 1fr} .details{display:none} }
@media (max-width:760px){
  body{overflow:auto}
  .app{display:block;height:auto;min-height:100vh;padding-bottom:76px}
  .side,.details{display:none}
  .list{border:0;min-height:calc(100vh - 76px)}
  .list-head{padding:16px 16px 10px}
  .list-head h1{font-size:26px}
  .tabs{overflow:auto;padding:0 12px 10px}
  .cv{padding:14px 16px}
  .chat{display:none}
  body.view-chat .list{display:none}
  body.view-chat .chat{display:flex;height:100vh;position:relative}
  body.view-chat .app{padding-bottom:0}
  body.view-chat .tabbar{display:none!important}
  .chat-head{height:auto;padding:10px 12px;flex-wrap:wrap;gap:10px;position:sticky;top:0;z-index:2}
  .back{display:grid;border:0}
  .chat-head .av{width:36px;height:36px}
  .chat-head .who{min-width:0;flex:1}
  .chat-head .who b{font-size:15.5px}
  .chat-head .who small{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .mode{margin:0;width:100%}
  .mode label,.composer .hint{display:none}
  .seg{width:100%}
  .seg span{flex:1;justify-content:center}
  .lead-strip{display:flex!important}
  .thread{padding:14px 12px 8px}
  .m{max-width:84%}
  .composer{margin:6px 10px 12px}
  .tabbar{display:flex;position:fixed;left:0;right:0;bottom:0;height:76px;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-top:1px solid var(--line);padding:8px 6px 18px;z-index:5}
  .tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;font-size:11px;font-weight:600;color:var(--muted);position:relative}
  .tabbar a .i{width:22px;height:22px}
  .tabbar a.on{color:var(--brand-700)}
  .tabbar a .c{position:absolute;top:-4px;left:calc(50% + 6px);background:var(--hot);color:#fff;font-size:10px;font-weight:800;min-width:17px;height:17px;border-radius:999px;display:grid;place-items:center;padding:0 4px;border:2px solid #fff}
}
.lead-strip{display:none;align-items:center;gap:10px;margin:0;padding:10px 12px;background:var(--hot-bg);border-bottom:1px solid var(--hot-line);font-size:13px;color:var(--ink-2)}
.lead-strip b{color:var(--ink)}
.lead-strip .btn{margin-left:auto;height:32px;font-size:13px;padding:0 12px}

.cv>div{min-width:0}