*{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0a0a0c;--rail:#111114;--panel:#161619;--panel2:#1c1c21;--panel3:#232329;
  --line:#2a2a31;--line2:#3a3a44;
  --txt:#e9ebef;--txt2:#a2a8b3;--txt3:#6d7480;
  --blue:#2f7bff;--blue2:#1f63dc;--green:#2ecc8f;--red:#f2544b;--yellow:#f0b429;
}
html,body{height:100%;overflow:hidden}
body{background:var(--bg);color:var(--txt);font:13px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;outline:none}
button{cursor:pointer;border:none;background:none}
svg{display:block}

/* ---------- top bar ---------- */
#topbar{height:54px;display:flex;align-items:center;gap:10px;padding:0 12px;background:#0f0f12;border-bottom:1px solid var(--line);position:relative;z-index:30}
.backBtn{display:flex;align-items:center;gap:5px;height:30px;padding:0 10px 0 8px;border-radius:7px;color:var(--txt2);font-size:12px;flex:0 0 auto}
.backBtn:hover{background:var(--panel2);color:var(--txt)}
.projBox{display:flex;align-items:center;gap:7px;flex:0 0 auto;max-width:250px}
#projTitle{width:170px;background:transparent;border:1px solid transparent;border-radius:6px;padding:5px 8px;font-size:13px;font-weight:500;color:var(--txt);text-overflow:ellipsis}
#projTitle:hover{border-color:var(--line2)}
#projTitle:focus{border-color:var(--blue);background:#0b0b0e}
#saveState{font-size:10px;color:var(--green);white-space:nowrap;opacity:.85}
#pubChip{font-size:10.5px;color:#8ff0c4;background:rgba(46,204,143,.12);border:1px solid rgba(46,204,143,.35);padding:2px 8px;border-radius:10px;white-space:nowrap}
#pubChip:hover{background:rgba(46,204,143,.22)}
.tplChip{display:flex;align-items:center;gap:5px;height:28px;padding:0 10px;border-radius:7px;background:var(--panel2);border:1px solid var(--line);font-size:11.5px;color:var(--txt2);flex:0 0 auto;cursor:default}
.tplChip b{color:var(--txt3);font-weight:400;font-size:10.5px}
.tplChip i{font-style:normal;color:var(--txt3);font-size:9px;margin-left:2px}
.tabs{display:flex;gap:2px;background:#141418;border:1px solid var(--line);padding:3px;border-radius:9px;flex:0 0 auto}
.tabs button{padding:5px 14px;border-radius:6px;font-size:12px;color:var(--txt2);transition:.15s}
.tabs button:hover{color:#fff}
.tabs button.on{background:var(--blue);color:#fff;font-weight:500;box-shadow:0 2px 10px rgba(47,123,255,.35)}
.spacer{flex:1}
.viewMode{display:flex;align-items:center;gap:2px;background:#141418;border:1px solid var(--line);padding:3px;border-radius:9px;flex:0 0 auto}
.viewMode button{padding:5px 10px;border-radius:6px;font-size:11.5px;color:var(--txt2);white-space:nowrap;transition:.15s}
.viewMode button:hover{color:#fff}
.viewMode button.on{background:#1f5db5;color:#fff;font-weight:600;box-shadow:0 2px 10px rgba(47,123,255,.3)}
.actions{display:flex;align-items:center;gap:6px;flex:0 0 auto}
@media(max-width:1080px){.viewMode button{padding:5px 7px;font-size:11px}}
@media(max-width:820px){#topbar .tplChip,#topbar .tabs{display:none}}
.ibtn{width:30px;height:30px;border-radius:7px;color:var(--txt2);font-size:16px;border:1px solid var(--line);background:#141418}
.ibtn:hover{background:var(--panel3);color:#fff}
.ibtn:disabled{opacity:.28;cursor:default}
.btn{padding:7px 13px;border-radius:7px;background:#1b1b20;border:1px solid var(--line2);font-size:12px;color:var(--txt);white-space:nowrap;transition:.15s}
.btn:hover{background:#26262e;border-color:#4a4a58}
.btn.primary{background:var(--blue);border-color:#4d8dff;color:#fff;font-weight:500}
.btn.primary:hover{background:#3d86ff}
.btn.wide{width:100%;margin-bottom:7px;text-align:center;padding:8px 13px}
.exportWrap{position:relative}
.menu{display:none;position:absolute;right:0;top:38px;width:262px;background:#1a1a1f;border:1px solid var(--line2);border-radius:10px;box-shadow:0 16px 44px rgba(0,0,0,.65);padding:5px;z-index:60}
.menu.show{display:block}
.menu>div{padding:9px 11px;border-radius:7px;cursor:pointer}
.menu>div:hover{background:#26262e}
.menu b{display:block;font-size:12px;font-weight:500}
.menu span{display:block;font-size:10.5px;color:var(--txt3);margin-top:2px;line-height:1.4}

/* ---------- layout ---------- */
/* 常驻左右面板已移除：工具面板点左栏图标才滑出，属性面板点「⚙ 设置」或选中标注才出现 */
#inspector.hidden{display:none}
.hiRes{border-color:rgba(240,180,41,.55);color:#ffd479;background:rgba(240,180,41,.10)}
.hiRes:hover{background:rgba(240,180,41,.20);border-color:var(--yellow)}
@media(max-width:1380px){#topbar{gap:6px;padding:0 8px}#topbar .tplChip{display:none}.tabs button{padding:5px 9px}.actions .btn{padding:6px 10px}#projTitle{width:140px}}
@media(max-width:1120px){#btnSave,#btnPreview,#btnUndo,#btnRedo{display:none}}
#main{display:flex;height:calc(100% - 54px);min-height:0}

/* rail */
#rail{width:64px;flex:0 0 64px;background:var(--rail);border-right:1px solid var(--line);display:flex;flex-direction:column;align-items:center;padding:8px 0;gap:2px;position:relative;z-index:12}
.railBtn{width:52px;height:54px;border-radius:9px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;color:var(--txt3);position:relative;transition:.15s}
.railBtn b{width:21px;height:21px;display:flex;align-items:center;justify-content:center}
.railBtn svg{width:19px;height:19px}
.railBtn span{font-size:10.5px;letter-spacing:.3px}
.railBtn:hover{color:#dfe4ec;background:#191920}
.railBtn.on{color:#fff;background:#1d2330}
.railBtn.on::before{content:"";position:absolute;left:-6px;top:13px;bottom:13px;width:3px;border-radius:0 3px 3px 0;background:var(--blue)}
.railBtn.on b{color:#6aa6ff}
.railBtn em{position:absolute;right:10px;top:8px;min-width:14px;height:14px;padding:0 3px;border-radius:7px;background:var(--blue);color:#fff;font-size:9px;font-style:normal;line-height:14px;text-align:center;display:none}
.railBtn em.show{display:block}
.railFoot{margin-top:auto;padding-top:6px;border-top:1px solid var(--line);width:52px}
.railBtn.mini{width:52px;height:44px}

/* flyout */
#flyout{width:262px;flex:0 0 262px;background:var(--panel);border-right:1px solid var(--line);display:flex;flex-direction:column;overflow:hidden;transition:margin-left .18s;min-height:0}
#flyout.collapsed{margin-left:-262px}
.flyHead{height:42px;flex:0 0 42px;display:flex;align-items:center;padding:0 8px 0 14px;border-bottom:1px solid var(--line);font-size:13px;font-weight:500;color:var(--txt)}
.flyHead span{flex:1}
.flyHead button{width:24px;height:24px;border-radius:6px;color:var(--txt3);font-size:15px;line-height:1}
.flyHead button:hover{background:var(--panel3);color:#fff}
#flyBody{flex:1;overflow:auto;padding:12px;scrollbar-width:thin;scrollbar-color:#3a3a44 transparent;min-height:0}
#flyBody::-webkit-scrollbar{width:7px}#flyBody::-webkit-scrollbar-thumb{background:#3a3a44;border-radius:4px}
.pane{display:none}.pane.on{display:block}
.pSub{font-size:11px;color:var(--txt3);letter-spacing:.6px;margin:14px 0 7px;display:flex;align-items:center;gap:6px}
.pSub:first-child{margin-top:2px}
.pSub em{font-style:normal;color:var(--txt3);font-size:10px;background:#22222a;padding:0 5px;border-radius:6px}
.pSub2{width:100%;padding:11px;border-radius:8px;background:linear-gradient(135deg,#2f7bff,#1c58c9);color:#fff;font-size:12.5px;font-weight:500;margin-bottom:9px;box-shadow:0 6px 18px rgba(47,123,255,.28)}
.pSub2:hover{filter:brightness(1.08)}
.tipBox{font-size:10.5px;line-height:1.85;color:var(--txt3);background:#121215;border:1px solid var(--line);border-radius:8px;padding:9px 10px;margin-top:10px}
.hintLive{font-size:10.5px;line-height:1.7;color:#8fb8ff;background:rgba(47,123,255,.09);border:1px solid rgba(47,123,255,.22);border-radius:8px;padding:8px 10px;margin-top:10px;min-height:34px}
.btnRow{display:flex;gap:7px;margin-top:8px}
.btnRow.two>*{flex:1}
.miniStat{font-size:11px;color:var(--txt2);line-height:1.9;background:#121215;border:1px solid var(--line);border-radius:8px;padding:9px 10px}
.scImg{margin-top:2px;height:90px;border-radius:8px;border:1px solid var(--line2);background:#101013 center/cover no-repeat;display:flex;align-items:center;justify-content:center;font-size:10.5px;color:var(--txt3)}

/* tools */
.tools{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.tool{display:flex;flex-direction:column;align-items:center;gap:3px;padding:9px 4px;border-radius:8px;background:#131317;border:1px solid var(--line);color:var(--txt2);font-size:10.5px;transition:.14s}
.tool i{font-style:normal;font-size:15px;line-height:1;color:#9fb8d8}
.tool:hover{background:#1e1e25;color:#fff;border-color:var(--line2)}
.tool.on{background:rgba(47,123,255,.16);border-color:#3d86ff;color:#fff;box-shadow:inset 0 0 0 1px rgba(47,123,255,.35)}
.tool.on i{color:#7fb0ff}

/* upload block */
.uploadBig{width:100%;display:flex;flex-direction:column;align-items:center;gap:5px;padding:18px 12px;border-radius:10px;background:linear-gradient(180deg,rgba(47,123,255,.13),rgba(47,123,255,.04));border:1px dashed #3d6fbf;color:#cfe0ff;margin-bottom:8px;transition:.16s}
.uploadBig:hover{background:linear-gradient(180deg,rgba(47,123,255,.22),rgba(47,123,255,.08));border-color:#5a93ff}
.uploadBig b{font-size:13px;color:#fff;font-weight:500}
.uploadBig span{font-size:10.5px;color:#93a6c4;line-height:1.5;text-align:center}
.uploadBig svg{color:#7fb0ff}

/* lists */
.list{overflow:auto;max-height:none;scrollbar-width:thin;scrollbar-color:#3a3a44 transparent}
.list.grow{flex:1;max-height:none}
.list::-webkit-scrollbar{width:7px}.list::-webkit-scrollbar-thumb{background:#3a3a44;border-radius:4px}
.item{display:flex;align-items:center;gap:7px;padding:7px 8px;border-radius:7px;cursor:pointer;font-size:12px;color:var(--txt2);margin-bottom:2px;border:1px solid transparent}
.item:hover{background:#1c1c22;color:var(--txt)}
.item.on{background:rgba(47,123,255,.16);color:#d8e7ff;border-color:rgba(47,123,255,.32)}
.item .ic{width:19px;height:19px;flex:0 0 19px;border-radius:4px;background:#282830;display:flex;align-items:center;justify-content:center;font-size:10px;color:#9fc4ff}
.item .nm{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;line-height:1.4}
.item .op{opacity:0;color:var(--txt3);font-size:14px;padding:0 2px}
.item:hover .op{opacity:1}.item .op:hover{color:var(--red)}
.item .eye{opacity:.55;font-size:11px;width:14px;text-align:center}
.item .eye.off{opacity:.22}
.addBtn{width:100%;padding:7px;border:1px dashed var(--line2);border-radius:7px;color:var(--txt2);font-size:11.5px;background:#131317}
.addBtn:hover{color:#fff;border-color:var(--blue);background:rgba(47,123,255,.08)}
.addBtn.del:hover{border-color:rgba(242,84,75,.6);color:#ff9c95;background:rgba(242,84,75,.08)}

/* stage */
#stage{flex:1;display:flex;flex-direction:column;min-width:0;background:#08080a;position:relative}
#canvasWrap{flex:1;position:relative;overflow:hidden;min-height:0}
#frame{width:100%;height:100%;border:0;background:#0b0b0e;display:block}
#sceneBadge{position:absolute;left:12px;top:12px;padding:4px 10px;border-radius:20px;background:rgba(10,10,14,.6);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.12);font-size:11px;color:#dfe7f2;pointer-events:none;z-index:4}
#canvasTools{position:absolute;right:14px;top:14px;display:flex;flex-direction:column;gap:8px;z-index:5}
.cir{width:34px;height:34px;border-radius:50%;background:rgba(16,16,20,.72);border:1px solid rgba(255,255,255,.14);color:#e6ecf5;display:flex;align-items:center;justify-content:center;backdrop-filter:blur(8px)}
.cir svg{width:15px;height:15px}
.cir:hover{background:rgba(47,123,255,.85);border-color:transparent}
#fabStack{position:absolute;right:16px;bottom:16px;display:flex;align-items:flex-end;gap:10px;z-index:5}
.fab{width:52px;height:52px;border-radius:50%;background:rgba(16,16,20,.72);border:1px solid rgba(255,255,255,.14);color:#e6ecf5;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;backdrop-filter:blur(8px);transition:.16s}
.fab svg{width:18px;height:18px}
.fab span{font-size:9.5px;opacity:.8}
.fab:hover{background:rgba(47,123,255,.9);border-color:transparent;transform:translateY(-2px)}
#dropMask{position:absolute;inset:0;display:none;align-items:center;justify-content:center;background:rgba(18,45,88,.78);border:3px dashed #6db1ff;z-index:6;pointer-events:none}
#dropMask div{font-size:15px;color:#fff;background:rgba(0,0,0,.4);padding:14px 26px;border-radius:10px}
#emptyHint{position:absolute;left:50%;top:46%;transform:translate(-50%,-50%);text-align:center;display:none;color:#8fa3ba;background:rgba(12,12,16,.9);padding:26px 36px;border-radius:14px;border:1px solid var(--line2);z-index:3;box-shadow:0 20px 60px rgba(0,0,0,.5)}
#emptyHint h3{font-size:15px;color:#e3ecf8;margin-bottom:8px;font-weight:500}
#emptyHint p{font-size:11.5px;line-height:1.9;color:#8296ad}
#emptyHint button{margin-top:14px;padding:8px 22px;border-radius:20px;background:var(--blue);color:#fff;font-size:12px}
#emptyHint button:hover{background:#4389ff}
#statusbar{height:24px;flex:0 0 24px;display:flex;align-items:center;justify-content:space-between;padding:0 12px;background:#0e0e11;border-top:1px solid var(--line);font-size:10.5px;color:var(--txt3)}

/* scene strip */
#sceneStrip{flex:0 0 auto;background:#0e0e11;border-top:1px solid var(--line);padding:6px 10px 9px}
.stripHead{display:flex;align-items:center;justify-content:space-between;height:26px;margin-bottom:5px}
.stripTab{font-size:11.5px;color:var(--txt2);padding:3px 8px;border-radius:6px;background:#191920;border:1px solid var(--line)}
.stripTab i{font-style:normal;color:var(--txt3);margin-left:4px;font-size:9px}
.stripActs{display:flex;gap:5px}
.sbtn{width:24px;height:22px;border-radius:5px;color:var(--txt2);display:flex;align-items:center;justify-content:center}
.sbtn svg{width:14px;height:14px}
.sbtn:hover{background:var(--panel3);color:#fff}
.stripBody{display:flex;align-items:center;gap:10px}
#sceneList{display:flex;gap:8px;overflow-x:auto;padding:2px 0 4px;flex:1;scrollbar-width:thin;scrollbar-color:#3a3a44 transparent}
#sceneList::-webkit-scrollbar{height:6px}#sceneList::-webkit-scrollbar-thumb{background:#3a3a44;border-radius:3px}
.sthumb{position:relative;flex:0 0 auto;width:96px;height:62px;border-radius:7px;overflow:hidden;border:2px solid transparent;background:#17171c center/cover no-repeat;cursor:pointer;transition:.15s}
.sthumb:hover{border-color:#5d6b80}
.sthumb.on{border-color:var(--blue);box-shadow:0 0 0 2px rgba(47,123,255,.25)}
.sthumb .sl{position:absolute;left:0;right:0;bottom:0;padding:3px 5px;font-size:9.5px;color:#fff;background:linear-gradient(180deg,transparent,rgba(0,0,0,.82));white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sthumb .st{position:absolute;left:4px;top:4px;font-size:8.5px;padding:1px 4px;border-radius:4px;background:rgba(0,0,0,.6);color:#cfe0ff}
.sthumb .sx{position:absolute;right:2px;top:2px;width:15px;height:15px;border-radius:50%;background:rgba(0,0,0,.55);color:#fff;font-size:11px;line-height:15px;text-align:center;opacity:0}
.sthumb:hover .sx{opacity:1}
.sthumb .sx:hover{background:var(--red)}
.sthumb.add{display:flex;align-items:center;justify-content:center;border:1px dashed var(--line2);color:var(--txt3);font-size:20px;background:#141418}
.sthumb.add:hover{color:#fff;border-color:var(--blue)}
.stripRight{display:flex;flex-direction:column;gap:5px;flex:0 0 auto;border-left:1px solid var(--line);padding-left:10px}
.stripRight button{font-size:11px;color:var(--txt2);padding:4px 10px;border-radius:6px;background:#191920;border:1px solid var(--line);white-space:nowrap}
.stripRight button:hover{color:#fff;border-color:var(--blue);background:rgba(47,123,255,.1)}

/* inspector */
#inspector{width:298px;flex:0 0 298px;background:var(--panel);border-left:1px solid var(--line);display:flex;flex-direction:column;overflow:hidden}
#panelHead{height:42px;flex:0 0 42px;display:flex;align-items:center;padding:0 14px;border-bottom:1px solid var(--line);font-size:13px;font-weight:500;color:var(--txt)}
#panel{flex:1;overflow:auto;padding:12px;scrollbar-width:thin;scrollbar-color:#3a3a44 transparent;min-height:0}
#panel::-webkit-scrollbar{width:7px}#panel::-webkit-scrollbar-thumb{background:#3a3a44;border-radius:4px}
.grp{margin-bottom:12px;border:1px solid var(--line);border-radius:9px;background:#121216;overflow:hidden}
.grp>.gt{background:#181820;padding:8px 11px;font-size:11px;color:#9fb6d4;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}
.grp>.gb{padding:11px}
.fld{margin-bottom:9px}.fld:last-child{margin-bottom:0}
.fld>label{display:block;font-size:10.5px;color:var(--txt3);margin-bottom:4px}
.fld input[type=text],.fld input[type=number],.fld textarea,.fld select,.fld input[type=url]{width:100%;background:#0d0d10;border:1px solid var(--line2);border-radius:6px;padding:6px 8px;font-size:12px;color:var(--txt)}
.fld textarea{resize:vertical;min-height:62px;line-height:1.6}
.fld input:focus,.fld textarea:focus,.fld select:focus{border-color:var(--blue)}
.fld select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#7d8da1 50%),linear-gradient(135deg,#7d8da1 50%,transparent 50%);background-position:calc(100% - 14px) 12px,calc(100% - 9px) 12px;background-size:5px 5px;background-repeat:no-repeat}
.row{display:flex;gap:8px}.row>*{flex:1;min-width:0}
.fld input[type=color]{width:100%;height:30px;padding:2px;background:#0d0d10;border:1px solid var(--line2);border-radius:6px;cursor:pointer}
.fld input[type=range]{width:100%;accent-color:var(--blue)}
.chk{display:flex;align-items:center;gap:7px;font-size:12px;color:var(--txt2);cursor:pointer;padding:3px 0}
.chk input{accent-color:var(--blue);width:14px;height:14px}
.kv{display:flex;gap:5px;margin-bottom:5px}.kv input{flex:1;min-width:0;background:#0d0d10;border:1px solid var(--line2);border-radius:5px;padding:5px 6px;font-size:11px}
.kv button{width:24px;color:var(--txt3);border-radius:5px}.kv button:hover{color:var(--red);background:#2a1c20}
.imgs{display:flex;flex-wrap:wrap;gap:6px}.imgs .pi{position:relative;width:64px;height:52px}.imgs img{width:100%;height:100%;object-fit:cover;border-radius:6px;border:1px solid var(--line2)}
.imgs .pi b{position:absolute;right:-4px;top:-5px;background:#c0392b;color:#fff;width:16px;height:16px;border-radius:50%;font-size:11px;display:flex;align-items:center;justify-content:center;cursor:pointer}
.hint{font-size:10.5px;color:var(--txt3);line-height:1.7;margin-top:6px}
.tag{display:inline-block;padding:2px 7px;border-radius:10px;background:#233247;color:#9fc4ff;font-size:10px;margin-right:4px}
.danger{width:100%;padding:7px;border:1px solid rgba(242,84,75,.4);border-radius:6px;color:#ff8b84;font-size:11px;background:rgba(242,84,75,.07)}
.danger:hover{background:rgba(242,84,75,.18)}

/* modal */
#modal{position:fixed;inset:0;background:rgba(4,4,6,.78);z-index:100;display:flex;align-items:center;justify-content:center}
#modal.hidden{display:none}
.dialog{width:440px;max-width:92vw;background:#17171c;border:1px solid var(--line2);border-radius:13px;box-shadow:0 26px 74px rgba(0,0,0,.7);overflow:hidden}
.dialog h3{padding:15px 18px;font-size:14.5px;border-bottom:1px solid var(--line);font-weight:500}
#modalBody{padding:16px 18px}
.dialogFoot{display:flex;justify-content:flex-end;gap:8px;padding:12px 18px;border-top:1px solid var(--line);background:#131318}
.typePick{display:flex;gap:10px;margin:4px 0 14px}
.typePick div{flex:1;border:1px solid var(--line2);border-radius:9px;padding:12px 10px;cursor:pointer;text-align:center;background:#121216}
.typePick div.on{border-color:var(--blue);background:rgba(47,123,255,.14)}
.typePick b{display:block;font-size:12px;margin-bottom:4px;font-weight:500}
.typePick span{font-size:10.5px;color:var(--txt3);line-height:1.5}
.fileDrop{border:1px dashed var(--line2);border-radius:9px;padding:16px;text-align:center;color:var(--txt2);font-size:12px;cursor:pointer;background:#121216}
.fileDrop:hover{border-color:var(--blue);color:#fff}
#toast{position:fixed;left:50%;bottom:120px;transform:translateX(-50%) translateY(16px);background:#26262e;border:1px solid var(--line2);color:#eaf2ff;padding:9px 18px;border-radius:20px;font-size:12px;opacity:0;transition:.25s;pointer-events:none;z-index:200;box-shadow:0 12px 34px rgba(0,0,0,.55)}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

@media(max-width:1360px){#inspector{width:272px;flex-basis:272px}#flyout{width:244px;flex-basis:244px}}
@media(max-width:1120px){#inspector{display:none}}
@media(max-width:920px){#flyout{position:absolute;left:64px;top:54px;bottom:0;z-index:20;box-shadow:14px 0 40px rgba(0,0,0,.5)}#topTabs{display:none}}

/* 图标平铺选择网格 */
.iconGrid{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.igTile{display:flex;flex-direction:column;align-items:center;gap:4px;padding:8px 4px 6px;border:1px solid rgba(255,255,255,.13);border-radius:8px;cursor:pointer;background:rgba(255,255,255,.04);transition:border-color .15s,background .15s}
.igTile svg{width:22px;height:22px;fill:#b9cbe4;color:#b9cbe4}
.igTile span{font-size:11px;color:#9fb1c9;line-height:1}
.igTile:hover{border-color:rgba(90,150,240,.5);background:rgba(90,150,240,.08)}
.igTile.on{border-color:#3f8cff;background:rgba(63,140,255,.18);box-shadow:0 0 0 1px rgba(63,140,255,.4)}
.igTile.on svg{fill:#fff;color:#fff}
.igTile.on span{color:#fff}

/* 图标工具浮动选择条：选中「图标」工具立刻弹出（科技风玻璃面板） */
#iconPal{position:absolute;top:52px;left:12px;z-index:16;display:none;padding:9px 10px 8px;border-radius:12px;
  background:linear-gradient(180deg,rgba(14,24,40,.94),rgba(8,13,21,.94));
  border:1px solid rgba(64,150,255,.45);
  box-shadow:0 8px 24px rgba(0,0,0,.55),0 0 18px rgba(40,140,255,.3),inset 0 0 24px rgba(30,110,220,.12);
  backdrop-filter:blur(6px)}
#iconPal .palTitle{font-size:11px;font-weight:700;letter-spacing:1.5px;color:#7fb2f5;margin-bottom:7px;text-shadow:0 0 8px rgba(60,150,255,.6)}
#iconPal .palRow{display:flex;gap:6px}
#iconPal .igTile{min-width:56px}
/* 线段两端拖拽手柄：默认可见且可点击，便于单独拖动某一端；选中态更醒目 */
.mhandle{fill:rgba(255,255,255,.92);stroke:#4da3ff;stroke-width:2;cursor:pointer}
.mhandle.sel{fill:#fff;stroke:#4da3ff;stroke-width:2.5}