:root{
  --bg:#f9f9f7; --panel:#ffffff; --sidebar:#f0eee6; --sidebar-hover:#e7e4d8;
  --ink:#1f1e1c; --muted:#6f6c64; --line:#e3e1d8; --accent:#c15f3c; --accent-ink:#a34d2e;
  --bubble:#f0eee6; --radius:14px;
  --font:"Segoe UI","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{font-family:var(--font);background:var(--bg);color:var(--ink);font-size:15px;line-height:1.65}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:14px}
.hidden{display:none !important}

#app{display:flex;height:100dvh;overflow:hidden}

/* ---------- 侧栏 ---------- */
#sidebar{width:288px;flex:0 0 288px;background:var(--sidebar);display:flex;flex-direction:column;
  border-right:1px solid var(--line);z-index:30}
.sb-head{display:flex;align-items:center;justify-content:space-between;padding:14px 14px 8px}
.brand{display:flex;gap:10px;align-items:center;min-width:0}
.brand-mark{font-size:26px;line-height:1}
.brand-name{font-weight:700;font-size:14.5px;white-space:nowrap}
.brand-sub{font-size:11.5px;color:var(--muted);white-space:nowrap}
.icon-btn{background:none;border:none;font-size:16px;color:var(--muted);width:32px;height:32px;border-radius:8px}
.icon-btn:hover{background:var(--sidebar-hover);color:var(--ink)}
#sb-close{display:none}
.new-room-btn{margin:6px 12px 10px;padding:10px 12px;width:calc(100% - 24px);
  background:var(--accent);color:#fff;border:none;border-radius:10px;font-size:14.5px;font-weight:600}
.new-room-btn:hover{background:var(--accent-ink)}
.sb-search{padding:0 12px 8px}
.sb-search input{width:100%;padding:8px 11px;border:1px solid var(--line);border-radius:9px;background:#fff;outline:none}
.sb-search input:focus{border-color:var(--accent)}
.room-list{flex:1;overflow-y:auto;padding:2px 8px 8px}
.room-item{display:flex;align-items:center;gap:9px;padding:8px 9px;border-radius:9px;cursor:pointer;border:none;
  background:none;width:100%;text-align:left;color:var(--ink)}
.room-item:hover{background:var(--sidebar-hover)}
.room-item.active{background:#e3dfd0;font-weight:600}
.room-ico{font-size:15px;width:22px;text-align:center;flex:0 0 22px}
.room-meta{min-width:0}
.room-name{font-size:13.8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.room-desc{font-size:11.5px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.room-sec{font-size:11px;color:var(--muted);letter-spacing:.08em;padding:12px 10px 4px}
.sb-foot{border-top:1px solid var(--line);padding:10px 12px}
.sb-link{display:block;width:100%;text-align:left;background:none;border:none;padding:7px 8px;border-radius:8px;font-size:13.5px;color:var(--ink)}
.sb-link:hover,.sb-link.active{background:var(--sidebar-hover)}
.sb-note{font-size:11px;color:var(--muted);padding:2px 8px 0}

/* ---------- 主区 ---------- */
#main{flex:1;display:flex;flex-direction:column;min-width:0;background:var(--bg)}
#topbar{display:flex;align-items:center;gap:10px;padding:10px 18px;border-bottom:1px solid var(--line);background:var(--bg)}
.tb-title{min-width:0}
#room-title{font-weight:700;font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tb-sub{font-size:12px;color:var(--muted)}
.tabs{margin-left:auto;display:flex;background:#eceae1;border-radius:10px;padding:3px}
.tab{border:none;background:none;padding:6px 16px;border-radius:8px;font-size:13.5px;color:var(--muted)}
.tab.active{background:#fff;color:var(--ink);font-weight:600;box-shadow:0 1px 3px rgba(0,0,0,.08)}
.only-mobile{display:none}
.view{flex:1;display:flex;flex-direction:column;min-height:0}
.scroll{flex:1;overflow-y:auto}
.read-col{max-width:780px;margin:0 auto;padding:0 20px;width:100%}
.bench-col{max-width:980px;margin:0 auto;padding:22px 20px 40px;width:100%}

/* ---------- 消息 ---------- */
#messages{padding:10px 0 26px}
.msg{display:flex;gap:12px;margin:20px 0}
.msg.user{justify-content:flex-end}
.bubble{background:var(--bubble);border-radius:18px;padding:10px 16px;max-width:82%;white-space:pre-wrap;word-break:break-word}
.avatar{width:30px;height:30px;border-radius:50%;background:var(--accent);color:#fff;flex:0 0 30px;
  display:flex;align-items:center;justify-content:center;font-size:15px;margin-top:2px}
.msg-body{min-width:0;max-width:calc(100% - 42px)}
.msg-name{font-weight:700;font-size:13.5px;margin-bottom:2px}
.msg-text{white-space:pre-wrap;word-break:break-word}
.msg-text b{font-weight:700}

/* ---------- 主聊天室总览 ---------- */
.ov-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(215px,1fr));gap:10px;margin:16px 0 6px}
.ov-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px;cursor:pointer}
.ov-card:hover{border-color:var(--accent)}
.ov-card .ov-name{font-weight:700;font-size:14px}
.ov-card .ov-row{font-size:12.5px;color:var(--muted);display:flex;justify-content:space-between;margin-top:3px}
.ov-card .ov-row b{color:var(--ink);font-weight:600}
.ov-note{font-size:12px;color:var(--muted);margin:4px 0 10px}
.cmd-row{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 4px}
.cmd-chip{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 14px;font-size:13.5px}
.cmd-chip:hover{border-color:var(--accent);color:var(--accent-ink)}

/* ---------- Composer ---------- */
.composer-wrap{padding:6px 0 12px;background:linear-gradient(transparent,var(--bg) 30%)}
.composer{display:flex;align-items:flex-end;gap:8px;background:#fff;border:1px solid var(--line);
  border-radius:24px;padding:8px 8px 8px 18px;box-shadow:0 4px 18px rgba(31,30,28,.07)}
.composer textarea{flex:1;border:none;outline:none;resize:none;background:none;max-height:160px;
  font-size:15px;line-height:1.5;padding:6px 0}
.send-btn{width:34px;height:34px;flex:0 0 34px;border-radius:50%;border:none;background:var(--accent);
  color:#fff;font-size:17px;line-height:1;display:flex;align-items:center;justify-content:center}
.send-btn:hover{background:var(--accent-ink)}
.send-btn:disabled{background:#cfccc2;cursor:default}
.composer-hint{text-align:center;font-size:11.5px;color:var(--muted);margin-top:7px}

/* ---------- 工作台 ---------- */
.bench-sec{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;margin-bottom:16px}
.bench-sec h3{font-size:15px;margin-bottom:4px}
.bench-sec .sec-sub{font-size:12.5px;color:var(--muted);margin-bottom:12px}
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{border-bottom:1px solid var(--line);padding:7px 6px;text-align:left;vertical-align:top}
th{color:var(--muted);font-weight:600;font-size:12px;white-space:nowrap}
td input,td select{width:100%;border:1px solid transparent;background:none;padding:4px 6px;border-radius:6px;outline:none}
td input:focus,td select:focus{border-color:var(--line);background:#fff}
.grade{font-weight:700}
.g-A1{color:#b3401e}.g-A2{color:#c77b1e}.g-B{color:#5c7a3a}.g-C{color:#8a877d}
.row-del{border:none;background:none;color:var(--muted);font-size:15px}
.row-del:hover{color:#b3401e}
.btn{border:1px solid var(--line);background:#fff;border-radius:9px;padding:8px 14px;font-size:13.5px}
.btn:hover{border-color:var(--accent)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}
.btn.primary:hover{background:var(--accent-ink)}
.btn.ghost{background:none}
.btn.small{padding:5px 11px;font-size:12.5px}
.draft-out{background:#fbfaf6;border:1px solid var(--line);border-radius:10px;padding:14px 16px;
  white-space:pre-wrap;font-size:13.8px;margin-top:12px;word-break:break-word}
.fld-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px}
.fld-row input,.fld-row select{border:1px solid var(--line);border-radius:8px;padding:8px 10px;background:#fff;outline:none}
.fld-row input:focus{border-color:var(--accent)}
.task-item{display:flex;align-items:center;gap:10px;padding:8px 4px;border-bottom:1px solid var(--line)}
.task-item.done .task-text{text-decoration:line-through;color:var(--muted)}
.task-text{flex:1;font-size:14px}
.empty-hint{color:var(--muted);font-size:13px;padding:10px 0}

/* ---------- 开放平台 ---------- */
.plat-wrap{max-width:900px;margin:0 auto;padding:22px 20px 50px;width:100%}
.plat-wrap h2{font-size:19px;margin:18px 0 8px}
.plat-wrap h2:first-child{margin-top:0}
.plat-wrap p{color:var(--muted);font-size:13.8px;margin-bottom:10px}
.ep{display:flex;gap:10px;align-items:baseline;background:#fff;border:1px solid var(--line);
  border-radius:10px;padding:10px 14px;margin-bottom:8px;flex-wrap:wrap}
.ep .m{font-weight:700;font-size:12px;padding:2px 8px;border-radius:6px;background:#eef3e6;color:#4c6b2f}
.ep .m.post{background:#fdf0e6;color:#a34d2e}
.ep code{font-size:13.5px}
.ep .d{color:var(--muted);font-size:12.5px;margin-left:auto}
.key-row{display:flex;gap:10px;align-items:center;background:#fff;border:1px solid var(--line);
  border-radius:10px;padding:10px 14px;margin-bottom:8px;flex-wrap:wrap}
.key-row code{font-size:13px;word-break:break-all}
.key-row .k-meta{color:var(--muted);font-size:12px}
.key-row .sp{flex:1}
.plat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px}
.plat-cell{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 14px}
.plat-cell .pc-t{font-weight:700;font-size:14px}
.plat-cell .pc-d{font-size:12.5px;color:var(--muted);margin-top:2px}

/* ---------- 弹窗 ---------- */
.modal{position:fixed;inset:0;background:rgba(31,30,28,.42);display:flex;align-items:center;justify-content:center;z-index:50;padding:16px}
.modal-card{background:#fff;border-radius:16px;padding:22px;width:100%;max-width:420px;box-shadow:0 18px 50px rgba(0,0,0,.22)}
.modal-title{font-weight:700;font-size:17px;margin-bottom:14px}
.fld{display:block;margin-bottom:12px}
.fld span{display:block;font-size:12.5px;color:var(--muted);margin-bottom:5px}
.fld input{width:100%;border:1px solid var(--line);border-radius:9px;padding:9px 11px;outline:none}
.fld input:focus{border-color:var(--accent)}
.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:16px}

#scrim{display:none}
@media (max-width:760px){
  #sidebar{position:fixed;top:0;left:0;bottom:0;transform:translateX(-105%);transition:transform .22s ease;box-shadow:0 0 40px rgba(0,0,0,.18)}
  #sidebar.open{transform:none}
  #scrim{display:block;position:fixed;inset:0;background:rgba(31,30,28,.35);z-index:25;opacity:0;pointer-events:none;transition:opacity .22s}
  #scrim.on{opacity:1;pointer-events:auto}
  #sb-close{display:block}
  .only-mobile{display:block}
  .read-col{padding:0 14px}
  .bubble{max-width:92%}
  th:nth-child(4),td:nth-child(4){display:none}
}

/* ---------- 最外层图标栏 ---------- */
#rail{width:54px;flex:0 0 54px;background:#e9e6db;border-right:1px solid var(--line);
  display:flex;flex-direction:column;align-items:center;padding:10px 0;gap:4px;z-index:20}
.rail-btn{width:38px;height:38px;border:none;background:none;border-radius:10px;font-size:17px;
  color:var(--ink);display:flex;align-items:center;justify-content:center;position:relative;line-height:1}
.rail-btn:hover{background:var(--sidebar-hover)}
.rail-btn.active{background:#ddd8c6;box-shadow:inset 0 0 0 1px var(--line)}
.rail-home{font-size:20px}
.rail-sep{width:26px;border-top:1px solid #d5d1c2;margin:6px 0}
.rail-sp{flex:1}
.rail-badge{position:absolute;top:1px;right:1px;min-width:16px;height:16px;padding:0 4px;
  background:#b3401e;color:#fff;font-size:10px;font-weight:700;border-radius:999px;
  display:flex;align-items:center;justify-content:center}

/* ---------- 通用页面 ---------- */
.page-wrap{max-width:980px;margin:0 auto;padding:22px 20px 50px;width:100%}
.page-wrap h2{font-size:19px;margin:18px 0 8px}
.page-wrap h2:first-child{margin-top:0}
.page-sub{color:var(--muted);font-size:13.8px;margin-bottom:14px}
.chip{display:inline-block;font-size:11.5px;color:var(--muted);background:#f0eee6;border:1px solid var(--line);
  border-radius:999px;padding:1px 9px;white-space:nowrap}
.sp{flex:1}

/* ---------- 知识库 ---------- */
.kb-sec{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;margin-bottom:16px}
.kb-sec h3{font-size:15px;margin-bottom:10px}
.kb-list{padding-left:20px}
.kb-list li{margin-bottom:7px;font-size:13.8px}
.kb-step{display:flex;gap:12px;padding:8px 0;border-bottom:1px solid var(--line)}
.kb-step:last-child{border-bottom:none}
.kb-step-t{font-weight:700;font-size:13.8px;flex:0 0 118px}
.kb-step-d{font-size:13.8px;color:#3d3b36}
.kb-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:10px}
.kb-line{background:#fbfaf6;border:1px solid var(--line);border-radius:10px;padding:11px 13px}
.kb-line-t{font-weight:700;font-size:13.8px;margin-bottom:5px}
.kb-row{display:flex;gap:8px;font-size:12.5px;margin-top:3px}
.kb-row span{color:var(--muted);flex:0 0 34px}
.kb-row div{min-width:0}

/* ---------- 灵感 ---------- */
.idea-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:12px}
.idea-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px}
.idea-head{display:flex;align-items:flex-start;gap:8px;justify-content:space-between}
.idea-name{font-weight:700;font-size:14px}
.score-chip{flex:0 0 auto;font-size:11.5px;font-weight:700;color:var(--accent-ink);background:#fdf0e6;
  border:1px solid #eccdb6;border-radius:999px;padding:2px 9px;white-space:nowrap}
.idea-text{font-size:13.5px;margin-top:7px}
.idea-meta{font-size:12px;color:var(--muted);margin-top:8px}

/* ---------- 设置 ---------- */
.set-sec{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;margin-bottom:16px}
.set-sec h3{font-size:15px;margin-bottom:6px}
.set-sec .sec-sub{font-size:12.5px;color:var(--muted);margin-bottom:12px}
.kv{display:flex;gap:10px;font-size:13.5px;padding:6px 0;border-bottom:1px solid var(--line)}
.kv:last-of-type{border-bottom:none}
.kv span{color:var(--muted);flex:0 0 74px}
.model-cat h4{font-size:13.5px;color:var(--muted);margin:14px 0 8px;letter-spacing:.04em}
.model-cat:first-child h4{margin-top:2px}
.model-row{background:#fbfaf6;border:1px solid var(--line);border-radius:10px;padding:11px 13px;margin-bottom:9px}
.mr-head{display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.mr-name{font-weight:700;font-size:14px}
.mr-on{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:5px}
.mr-on input{width:16px;height:16px;accent-color:var(--accent)}
.mr-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:9px;margin-top:10px}
.mr-f{display:block}
.mr-f span{display:block;font-size:11.5px;color:var(--muted);margin-bottom:4px}
.mr-f input,.mr-f select{width:100%;border:1px solid var(--line);border-radius:8px;padding:8px 10px;background:#fff;outline:none}
.mr-f input:focus,.mr-f select:focus{border-color:var(--accent)}
.key-wrap{display:flex;gap:6px}
.key-wrap input{flex:1;min-width:0}
.model-add{border-top:1px dashed var(--line);margin-top:14px;padding-top:12px}
.model-add h4{font-size:13.5px;margin-bottom:8px}
.conn-counts{font-weight:700;font-size:14px;margin-bottom:10px}
.conn-row{display:flex;gap:10px;align-items:center;background:#fbfaf6;border:1px solid var(--line);
  border-radius:10px;padding:8px 13px;margin-bottom:7px;flex-wrap:wrap}
.conn-name{font-weight:600;font-size:13.8px}
.conn-st{font-size:12px;color:var(--muted)}
.conn-st.on{color:#4c6b2f;font-weight:700}

/* ---------- 下载 ---------- */
.dl-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}
.dl-cell{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px}
.dl-cell .pc-t{font-weight:700;font-size:14.5px}
.dl-cell .pc-d{font-size:12.8px;color:var(--muted);margin-top:3px}

@media (max-width:760px){
  #rail{width:46px;flex-basis:46px}
  .rail-btn{width:34px;height:34px;font-size:15px}
  .kb-step{flex-direction:column;gap:2px}
  .kb-step-t{flex:none}
}