:root{
  --bg:#f6f7f9; --panel:#fff; --panel-2:#f1f3f6; --line:#e3e6eb; --line-2:#d3d8df;
  --text:#18202b; --text-2:#4b5563; --muted:#6b7280;
  --primary:#1e293b; --primary-fg:#fff; --accent:#2563eb; --accent-soft:#e8efff;
  --ok:#15803d; --ok-soft:#e7f6ec; --warn:#b45309; --warn-soft:#fdf3e1; --bad:#b91c1c; --bad-soft:#fdecec;
  --idle:#64748b; --idle-soft:#eef1f5;
  --staff:#eaf1ff; --staff-line:#c9dafc; --cust:#fff; --draft:#fbfaf6; --draft-line:#cfc6a8;
  --radius:10px; --shadow:0 1px 2px rgba(16,24,40,.06);
  --mono:"Fira Code",ui-monospace,SFMono-Regular,Consolas,monospace;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0f1420; --panel:#161d2b; --panel-2:#1c2433; --line:#273043; --line-2:#334056;
  --text:#e8ecf3; --text-2:#b6bfcd; --muted:#8b95a6;
  --primary:#e8ecf3; --primary-fg:#0f1420; --accent:#7aa2ff; --accent-soft:#1b2a4a;
  --ok:#4ade80; --ok-soft:#14301f; --warn:#fbbf24; --warn-soft:#352a12; --bad:#f87171; --bad-soft:#3a1717;
  --idle:#94a3b8; --idle-soft:#1f2837;
  --staff:#17264a; --staff-line:#2c4380; --cust:#161d2b; --draft:#1f1d16; --draft-line:#5c5436;
}}
:root[data-theme="dark"]{
  --bg:#0f1420; --panel:#161d2b; --panel-2:#1c2433; --line:#273043; --line-2:#334056;
  --text:#e8ecf3; --text-2:#b6bfcd; --muted:#8b95a6;
  --primary:#e8ecf3; --primary-fg:#0f1420; --accent:#7aa2ff; --accent-soft:#1b2a4a;
  --ok:#4ade80; --ok-soft:#14301f; --warn:#fbbf24; --warn-soft:#352a12; --bad:#f87171; --bad-soft:#3a1717;
  --idle:#94a3b8; --idle-soft:#1f2837;
  --staff:#17264a; --staff-line:#2c4380; --cust:#161d2b; --draft:#1f1d16; --draft-line:#5c5436;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--text);font:14px/1.6 -apple-system,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif}
button,input,select,textarea{font:inherit;color:inherit}
a{color:var(--accent)}
.mono{font-family:var(--mono);font-size:12.5px}
.muted{color:var(--muted)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}


/* 外壳 */
.shell{display:grid;grid-template-columns:208px 1fr;min-height:100vh}
.side{background:var(--panel);border-right:1px solid var(--line);padding:16px 12px;display:flex;flex-direction:column;gap:4px}
.brand{display:flex;align-items:center;gap:8px;font-weight:600;padding:4px 8px 14px}
.brand svg{width:22px;height:22px}
.nav{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:8px;color:var(--text-2);cursor:pointer;border:0;background:none;text-align:left;width:100%}
.nav svg{width:18px;height:18px;flex:none}
.nav:hover{background:var(--panel-2)}
.nav[aria-current="page"]{background:var(--accent-soft);color:var(--accent);font-weight:600}
.nav.soon{opacity:.55;cursor:default}
.nav .tag{margin-left:auto;font-size:11px;color:var(--muted)}
.side .foot{margin-top:auto;font-size:12px;color:var(--muted);padding:8px}
main{padding:22px 28px 40px;min-width:0}
.head{display:flex;align-items:flex-end;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.head h1{font-size:20px;margin:0;font-weight:650}
.head .sub{color:var(--muted);font-size:13px}
.head .sp{flex:1}

.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.btn{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line-2);background:var(--panel);border-radius:8px;padding:7px 14px;cursor:pointer;min-height:36px}
.btn:hover{background:var(--panel-2)}
.btn.primary{background:var(--primary);color:var(--primary-fg);border-color:var(--primary)}
.btn.primary:hover{opacity:.9}
.btn svg{width:16px;height:16px}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* 状态：颜色 + 图标 + 文字 */
.st{display:inline-flex;align-items:center;gap:5px;font-size:12.5px;line-height:1.2;white-space:nowrap}
.st svg{width:14px;height:14px;flex:none}
.st.ok{color:var(--ok)} .st.warn{color:var(--warn)} .st.bad{color:var(--bad)} .st.idle{color:var(--idle)}
.pill{display:inline-flex;align-items:center;gap:5px;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:600;white-space:nowrap}
.pill.learn{background:var(--accent-soft);color:var(--accent)}
.pill.off{background:var(--idle-soft);color:var(--idle)}
.pill.on{background:var(--ok-soft);color:var(--ok)}
.pill.merchant{background:var(--panel-2);color:var(--text-2);font-weight:500}

/* 账号列表 */
.summary{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:16px}
.metric{padding:14px 16px}
.metric .n{font-size:22px;font-weight:650}
.metric .l{color:var(--muted);font-size:12.5px}
table{width:100%;border-collapse:collapse}
th{font-size:12px;font-weight:600;color:var(--muted);text-align:left;padding:10px 14px;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
tr:last-child td{border-bottom:0}
tbody tr:hover{background:var(--panel-2)}
.acc-name{font-weight:600}
.health{display:grid;grid-template-columns:repeat(2,max-content);gap:4px 16px}
.why{margin-top:6px;font-size:12.5px;color:var(--warn);background:var(--warn-soft);border-radius:6px;padding:4px 8px;display:inline-block}
.row-actions{display:flex;gap:6px;justify-content:flex-end}

/* 账号设置 */
.settings{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:16px;align-items:start}
.sec{padding:18px 20px}
.sec + .sec{border-top:1px solid var(--line)}
.sec h2{font-size:15px;margin:0 0 4px}
.sec .desc{color:var(--muted);font-size:12.5px;margin:0 0 14px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px 16px}
.field label{display:block;font-size:12.5px;font-weight:600;margin-bottom:5px;color:var(--text-2)}
.field .hint{font-size:12px;color:var(--muted);margin-top:4px}
.input,select.input{width:100%;border:1px solid var(--line-2);background:var(--panel);border-radius:8px;padding:8px 10px;min-height:38px}
.input::placeholder{color:var(--muted)}
.input.secret-set::placeholder{color:var(--ok)}
.seg{display:inline-grid;grid-auto-flow:column;border:1px solid var(--line-2);border-radius:9px;overflow:hidden}
.seg button{border:0;background:var(--panel);padding:9px 16px;cursor:pointer;min-width:96px;text-align:left;border-right:1px solid var(--line-2)}
.seg button:last-child{border-right:0}
.seg button .t{font-weight:600;display:block}
.seg button .s{font-size:11.5px;color:var(--muted)}
.seg button[aria-pressed="true"]{background:var(--accent-soft);color:var(--accent)}
.seg button[aria-pressed="true"] .s{color:var(--accent)}
.seg button[disabled]{cursor:not-allowed;opacity:.5}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line-2);border-radius:999px;padding:4px 10px 4px 6px;cursor:pointer;background:var(--panel)}
.chip input{margin:0}
.chip.on{border-color:var(--accent);background:var(--accent-soft)}
.side-card{padding:16px 18px}
.side-card h3{font-size:13px;margin:0 0 10px}
.kv{display:flex;justify-content:space-between;gap:10px;padding:6px 0;border-bottom:1px dashed var(--line);font-size:13px}
.kv:last-child{border-bottom:0}
.savebar{display:flex;gap:10px;align-items:center;padding:14px 20px;border-top:1px solid var(--line);background:var(--panel-2);border-radius:0 0 var(--radius) var(--radius)}
.savebar .sp{flex:1}

/* 会话 */
.conv{display:grid;grid-template-columns:300px minmax(0,1fr);gap:16px;align-items:start}
.filters{display:flex;gap:6px;padding:10px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.filters button{border:1px solid var(--line-2);background:var(--panel);border-radius:999px;padding:3px 10px;font-size:12.5px;cursor:pointer}
.filters button[aria-pressed="true"]{background:var(--primary);color:var(--primary-fg);border-color:var(--primary)}
.clist{max-height:calc(100vh - 230px);overflow:auto}
.citem{display:block;width:100%;text-align:left;border:0;background:none;padding:11px 14px;border-bottom:1px solid var(--line);cursor:pointer}
.citem:hover{background:var(--panel-2)}
.citem[aria-current="true"]{background:var(--accent-soft)}
.citem .top{display:flex;align-items:center;gap:8px}
.citem .who{font-weight:600}
.citem .time{margin-left:auto;font-size:12px;color:var(--muted)}
.citem .last{color:var(--text-2);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin:2px 0 4px}
.citem .meta{display:flex;gap:10px}
.thread-head{display:flex;align-items:center;gap:12px;padding:14px 18px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.thread-head .sp{flex:1}
.legend{display:flex;gap:14px;font-size:12px;color:var(--muted)}
.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:4px;vertical-align:-1px}
.thread{padding:16px 18px;display:flex;flex-direction:column;gap:18px}
.turn{display:flex;flex-direction:column;gap:8px}
.bubble{border:1px solid var(--line);border-radius:10px;padding:8px 12px;max-width:560px;background:var(--cust)}
.bubble .who{font-size:11.5px;color:var(--muted);margin-bottom:2px}
.pair{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.col{border-radius:10px;padding:10px 12px;min-width:0}
.col .lbl{display:flex;align-items:center;gap:6px;font-size:12px;font-weight:600;margin-bottom:6px}
.col .lbl svg{width:14px;height:14px}
.col.staff{background:var(--staff);border:1px solid var(--staff-line)}
.col.draft{background:var(--draft);border:1px dashed var(--draft-line)}
.col p{margin:0 0 4px}
.col .none{color:var(--muted);font-style:italic}
.diff{margin-top:8px;font-size:12px;display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.handoff{display:inline-flex;gap:5px;align-items:center;font-size:12px;color:var(--warn);background:var(--warn-soft);border-radius:6px;padding:2px 8px;margin-top:4px}
details.trace{margin-top:8px;font-size:12.5px}
details.trace summary{cursor:pointer;color:var(--accent)}
details.trace pre{white-space:pre-wrap;background:var(--panel-2);border-radius:8px;padding:8px 10px;margin:6px 0 0;font-family:var(--mono);font-size:12px}
.sysline{text-align:center;font-size:12px;color:var(--muted)}

/* 登录 */
.login-wrap{min-height:100vh;display:grid;place-items:center;padding:24px}
.login{width:min(380px,100%);padding:28px 28px 22px}
.login h1{font-size:19px;margin:10px 0 2px}
.login .field{margin-top:14px}
.err{color:var(--bad);font-size:12.5px;margin-top:8px;display:flex;gap:5px;align-items:center}
.err svg{width:14px;height:14px}

[hidden]{display:none!important}
@media (max-width:900px){
  .shell{grid-template-columns:1fr}.side{flex-direction:row;overflow:auto;border-right:0;border-bottom:1px solid var(--line)}
  .side .foot,.brand{display:none}.summary{grid-template-columns:repeat(2,1fr)}
  .settings,.conv,.pair,.grid2{grid-template-columns:1fr} main{padding:16px}
  table,thead,tbody,tr,td{display:block} thead{display:none} td{border:0;padding:6px 14px} tr{border-bottom:1px solid var(--line);padding:8px 0}
}

/* 正式版补充 */
.toast{position:fixed;right:20px;bottom:20px;background:var(--primary);color:var(--primary-fg);padding:10px 16px;border-radius:8px;box-shadow:0 4px 16px rgba(0,0,0,.18);z-index:50}
.toast.bad{background:var(--bad);color:#fff}
.empty{padding:28px;text-align:center;color:var(--muted)}
.vf-form{display:grid;grid-template-columns:1fr 1fr;gap:12px 16px;padding:18px 20px;border-bottom:1px solid var(--line)}
.vf-form .full{grid-column:1/-1}
.drop{border:1.5px dashed var(--line-2);border-radius:8px;padding:12px;text-align:center;color:var(--muted);cursor:pointer}
.drop.over{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}
.btn.danger{color:var(--bad);border-color:var(--line-2)}
.btn.small{min-height:30px;padding:4px 10px;font-size:13px}
@media (max-width:900px){.vf-form{grid-template-columns:1fr}}
a.btn{text-decoration:none;color:inherit}
a.btn.primary{color:var(--primary-fg)}
.hint svg,.desc svg{width:12px;height:12px;vertical-align:-1px}
.settings{max-width:1200px}
.vf-form,.login{max-width:100%}