* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { background: #0d1424; color: #e8ecf4; font: 14px/1.55 -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif; }
.topbar { display: flex; align-items: center; gap: 14px; padding: 10px 16px; background: #11192e; border-bottom: 1px solid #22304f; flex-wrap: wrap; }
.brand-logo { height: 32px; width: auto; display: block; }
.topbar .back { color: #ffb347; text-decoration: none; }
.topbar .title strong { font-size: 16px; }
.topbar .meta, .meta { color: #93a3c0; margin-left: 8px; font-size: 12px; }
.top-actions { margin-left: auto; display: flex; gap: 8px; flex-wrap: wrap; }
a.btn { text-decoration: none; display: inline-block; }
.btn { background: #1d2a47; color: #e8ecf4; border: 1px solid #31456e; border-radius: 8px; padding: 7px 12px; cursor: pointer; font-size: 13px; }
.btn:hover { border-color: #ffb347; }
.btn.primary { background: #d9480f; color: #fff; border: none; font-weight: 600; }
.btn.ghost { background: transparent; }
.btn.sm { padding: 4px 9px; font-size: 12px; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.file-btn { display: inline-block; }
.notice { margin: 0; padding: 9px 16px; background: #16233f; border-bottom: 1px solid #22304f; color: #c9d5ec; font-size: 13px; }
.notice b { color: #ffb347; }
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 14px; padding: 14px; align-items: start; }
@media (max-width: 900px) { .layout { grid-template-columns: 1fr; } }
.stage-bar { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 10px; }
.stage-bar label { font-size: 12px; color: #aeb9d0; display: flex; align-items: center; gap: 6px; }
.stage-bar input[type="number"] { width: 76px; }
.canvas-box { position: relative; max-width: 760px; margin: 0 auto; background: #101a30; border: 1px solid #2a3a5f; border-radius: 10px; overflow: hidden; line-height: 0; }
.canvas-box svg { width: 100%; height: auto; display: block; touch-action: none; }
.canvas-box .brand-logo.corner { position: absolute; right: 10px; bottom: 10px; height: 20px; opacity: .5; pointer-events: none; }
.hint { color: #93a3c0; font-size: 12px; }
.hint.warn { color: #ffb347; }
#statusLine { color: #c9d5ec; }
#statusLine.err { color: #ff9d8a; }
.panel { display: flex; flex-direction: column; gap: 12px; }
.card { background: #131e36; border: 1px solid #24365c; border-radius: 10px; padding: 12px 14px; }
.card h2 { margin: 0 0 10px; font-size: 14px; }
.row { display: flex; align-items: center; }
.row.gap { gap: 6px; flex-wrap: wrap; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
label.block, .grid2 label { display: flex; flex-direction: column; gap: 3px; font-size: 12px; color: #aeb9d0; margin-bottom: 8px; }
input[type="number"], input[type="text"], select, textarea { background: #0d1424; border: 1px solid #31456e; color: #e8ecf4; border-radius: 6px; padding: 6px 8px; width: 100%; font: inherit; }
.slider-row { display: flex; align-items: center; gap: 10px; font-size: 12px; color: #aeb9d0; margin: 4px 0 10px; }
.slider-row input { flex: 1; }
.el-list { display: flex; flex-direction: column; gap: 6px; }
.el-item { display: flex; align-items: center; gap: 8px; background: #1d2a47; border: 1px solid #31456e; border-radius: 8px; padding: 6px 10px; cursor: pointer; font-size: 13px; text-align: left; color: #e8ecf4; width: 100%; }
.el-item.sel { border-color: #ffb347; background: #26355a; }
.el-item .tag { color: #ffb347; font-size: 11px; border: 1px solid #8a5a20; border-radius: 4px; padding: 0 5px; flex: none; }
.el-item .nm { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.serial-preview { font-size: 12px; color: #c9d5ec; word-break: break-all; background: #0d1424; border: 1px solid #24365c; border-radius: 6px; padding: 6px 8px; margin-top: 4px; }
svg .el-shape { fill: #dbe6ff; fill-rule: evenodd; stroke: #7fa6ff; stroke-width: .35; cursor: grab; }
svg .el-line { fill: none; stroke: #dbe6ff; stroke-width: .45; cursor: grab; }
svg .el-sel { stroke: #ffb347 !important; stroke-width: .6; }
svg .sel-box { fill: none; stroke: #ffb347; stroke-width: .5; stroke-dasharray: 2 1.6; pointer-events: none; }
svg .area-bg { fill: #131f3a; }
svg .area-frame { fill: none; stroke: #3d5a94; stroke-width: .6; }