:root{color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;height:100%;font-family:ui-sans-serif,system-ui,PingFang SC,Microsoft YaHei,sans-serif;background:#070a12;color:#dfe9f5}#app{display:flex;height:100vh;width:100vw;overflow:hidden}#stage{position:relative;flex:1 1 auto;min-width:0}#sim{display:block;width:100%;height:100%}#panel{width:300px;flex:0 0 300px;height:100%;overflow-y:auto;background:#101a30;border-left:1px solid #243650;padding:12px 14px}.section-title{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:#6f8bb0;margin:14px 0 6px;border-bottom:1px solid #1d2940;padding-bottom:4px}.row{display:flex;align-items:center;gap:8px;margin:6px 0;font-size:13px}.row>span{flex:0 0 80px;color:#aebfd6}.row>input[type=range]{flex:1 1 auto;min-width:60px}.row>input[type=number]{flex:0 0 62px;width:62px;background:#0b1220;color:#dfe9f5;border:1px solid #2a3a58;border-radius:6px;padding:3px 5px;font-size:13px;text-align:right;font-variant-numeric:tabular-nums}.row>input[type=number]:focus{outline:none;border-color:#2a6cff}.row>select{flex:1;background:#0b1220;color:#dfe9f5;border:1px solid #2a3a58;border-radius:6px;padding:4px}.row>input[type=checkbox]{width:16px;height:16px}.btn-row{margin:8px 0}button{width:100%;padding:8px;border-radius:8px;border:1px solid #2a6cff;background:#11203f;color:#cfe1ff;cursor:pointer;font-size:13px}button:hover{background:#173057}.status{margin-top:8px;padding:8px;border-radius:8px;background:#0b1220;border:1px solid #1d2940;font-size:12px;color:#8fd6a0;word-break:break-all;white-space:pre-wrap}.status-error{color:#ff9c9c;border-color:#5a2430;background:#1a0f14}.status-info{color:#9fb6cc}.status-hint{margin-top:8px;font-size:11px;line-height:1.6;color:#6f8bb0}.status-hint code{background:#0b1220;border:1px solid #1d2940;border-radius:4px;padding:0 4px;font-family:ui-monospace,Menlo,Consolas,monospace;color:#a8c8ee}.panel{margin:10px 0;border:1px solid #1d2940;border-radius:10px;background:#0c1322;overflow:hidden}.panel-head{display:flex;align-items:center;justify-content:space-between;padding:9px 12px;background:#111a2e;user-select:none}.panel-head.collapsible{cursor:pointer}.panel-head.collapsible:hover{background:#15203a}.panel-title{font-size:12px;font-weight:600;letter-spacing:.04em;color:#9fb6cc;text-transform:uppercase}.panel-arrow{font-size:11px;color:#6f8bb0}.panel-body{padding:6px 12px 12px}.open-editor-btn{margin:6px 0;padding:12px;font-size:13px}.editor-wrap{margin:6px 0;border:1px solid #2a3a58;border-radius:8px;overflow:hidden;background:#0b1220}.editor-wrap-lg{height:100%;margin:0}.student-editor{height:240px;max-height:240px}.editor-wrap-lg .student-editor{height:100%!important;max-height:none!important}.student-editor .cm-editor{height:100%;background:#0b1220;color:#dfe9f5;font-size:12px}.student-editor .cm-editor.cm-focused{outline:none;border-color:#2a6cff}.student-editor .cm-gutters{background:#0b1220;color:#4f6a8c;border-right:1px solid #1d2940}.student-editor .cm-activeLine,.student-editor .cm-activeLineGutter{background:#11203f}.student-editor .cm-selectionBackground,.student-editor .cm-content ::selection{background:#1d3a6b}.btn-row-inline{display:flex;gap:8px;margin:8px 0}.btn-row-inline button{margin:0}button.primary{background:#1c4ed8;border-color:#3b82f6;color:#eaf2ff}button.primary:hover{background:#2563eb}button:disabled{opacity:.55;cursor:not-allowed}body.modal-open{overflow:hidden}.modal-overlay{position:fixed;inset:0;background:#040810b8;display:flex;align-items:center;justify-content:center;padding:24px;z-index:1000}.modal-box{width:min(1180px,100%);height:min(760px,100%);background:#0e1422;border:1px solid #24344f;border-radius:14px;box-shadow:0 18px 50px #0000008c;display:flex;flex-direction:column;overflow:hidden}.modal-bar{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;border-bottom:1px solid #1d2940;flex:0 0 auto}.modal-title{font-size:13px;font-weight:500;color:#cfe1ff}.modal-close{width:28px;height:28px;padding:0;border:1px solid transparent;background:transparent;color:#8aa4c4;font-size:18px;line-height:1;border-radius:6px}.modal-close:hover{background:#1a2942;border-color:#2a3a58}.modal-body{flex:1 1 auto;display:flex;gap:14px;padding:14px;min-height:0}.modal-editor-col{flex:1 1 auto;min-width:0;display:flex}.modal-editor-col .editor-wrap{flex:1 1 auto}.modal-side-col{flex:0 0 250px;overflow-y:auto;display:flex;flex-direction:column;gap:10px}.modal-field{display:flex;align-items:center;gap:8px;font-size:12px;color:#aebfd6}.modal-field>span{flex:0 0 40px}.modal-select{flex:1 1 auto;background:#0b1220;color:#dfe9f5;border:1px solid #2a3a58;border-radius:6px;padding:5px;font-size:12px}.api-card{background:#0b1220;border:1px solid #1d2940;border-radius:8px;padding:10px 11px;font-size:12px;line-height:1.7;color:#aebfd6}.api-title{font-size:11px;color:#6f8bb0;margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em}.api-title:not(:first-child){margin-top:10px}.api-card code{display:block;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:11px;color:#8fd6a0;word-break:break-all}.api-note{margin-top:9px;padding-top:8px;border-top:1px solid #1d2940;font-size:11px;color:#8aa4c4;line-height:1.6}.api-note b{color:#cfe1ff;font-weight:500}.api-steps{margin:0;padding-left:17px;font-size:11px;line-height:1.7}.api-steps code{display:inline;font-size:11px}.modal-foot{flex:0 0 auto;display:flex;align-items:center;gap:12px;padding:10px 14px;border-top:1px solid #1d2940}.modal-foot .status{flex:1 1 auto;margin-top:0;max-height:66px;overflow-y:auto}.modal-btns{flex:0 0 auto;display:flex;gap:8px}.modal-btns button{width:auto;padding:8px 14px;white-space:nowrap}.modal-apply{min-width:118px}@media (max-width: 900px){.modal-body{flex-direction:column}.modal-side-col{flex:0 0 auto;max-height:190px}}.canvas-toolbar{position:absolute;top:12px;right:12px;z-index:20;display:flex;align-items:center;gap:8px}.help-fab{width:auto;padding:7px 14px;border-radius:999px;border:1px solid #2a6cff;background:#11203fdb;color:#cfe1ff;font-size:13px;font-weight:500;cursor:pointer;backdrop-filter:blur(4px);box-shadow:0 4px 14px #0006}.help-fab:hover{background:#173057}.help-overlay{position:fixed;inset:0;background:#03070ef0;z-index:1200;display:flex;align-items:center;justify-content:center;padding:28px}.help-page{display:flex;width:min(1080px,100%);height:min(88vh,820px);background:#0e1422;border:1px solid #24344f;border-radius:14px;overflow:hidden;box-shadow:0 20px 60px #0009}.help-toc{flex:0 0 210px;border-right:1px solid #1d2940;padding:18px 14px;overflow-y:auto;display:flex;flex-direction:column}.help-toc-title{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:#6f8bb0;margin-bottom:12px}.help-toc ul{list-style:none;margin:0;padding:0;flex:1 1 auto}.help-toc li{margin:2px 0}.help-toc a{display:block;padding:7px 10px;border-radius:7px;color:#aebfd6;font-size:13px;text-decoration:none}.help-toc a:hover{background:#15203a;color:#cfe1ff}.help-close-btn{margin-top:14px;width:100%;padding:8px;border-radius:8px;border:1px solid #2a3a58;background:#11203f;color:#cfe1ff;cursor:pointer;font-size:13px}.help-close-btn:hover{background:#173057}.help-content{flex:1 1 auto;min-width:0;display:flex;flex-direction:column}.help-header{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;border-bottom:1px solid #1d2940;flex:0 0 auto}.help-header h1{margin:0;font-size:16px;font-weight:600;color:#cfe1ff}.help-x{width:30px;height:30px;padding:0;border:1px solid transparent;background:transparent;color:#8aa4c4;font-size:20px;line-height:1;border-radius:6px}.help-x:hover{background:#1a2942;border-color:#2a3a58}.help-body{flex:1 1 auto;overflow-y:auto;padding:8px 28px 32px;line-height:1.75;font-size:14px;color:#cdd9ea}.help-body h3{margin:26px 0 10px;font-size:15px;color:#9fd0ff;border-left:3px solid #2a6cff;padding-left:10px}.help-body p{margin:10px 0}.help-body ul,.help-body ol{margin:8px 0;padding-left:22px}.help-body li{margin:4px 0}.help-body code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.9em;background:#0b1220;border:1px solid #1d2940;border-radius:4px;padding:1px 5px;color:#8fd6a0}.help-body .note{background:#2a6cff1a;border:1px solid #1f3a66;border-radius:8px;padding:10px 12px;color:#a9c6ee;font-size:13px}.help-code{background:#080d18;border:1px solid #1d2940;border-radius:8px;padding:12px 14px;overflow-x:auto;margin:12px 0}.help-code code{background:transparent;border:none;padding:0;color:#b9d4f5;font-size:12.5px;line-height:1.6;white-space:pre}.help-table{width:100%;border-collapse:collapse;margin:12px 0;font-size:13px}.help-table th,.help-table td{border:1px solid #1d2940;padding:7px 10px;text-align:left;vertical-align:top}.help-table th{background:#111a2e;color:#9fb6cc;font-weight:600}.help-table td code{font-size:12px}.stage-footer{position:absolute;left:50%;bottom:8px;transform:translate(-50%);z-index:15;display:flex;flex-direction:column;align-items:center;gap:3px;pointer-events:none;user-select:none}.stats-line{padding:2px 10px;border-radius:999px;background:#0a122073;color:#6f8bb0;font-size:11px;line-height:1.6;letter-spacing:.02em;white-space:nowrap;opacity:0;transition:opacity .4s ease}.stats-line.visible{opacity:1}.copyright-line{color:#4d6484;font-size:10px;line-height:1.5;letter-spacing:.01em;white-space:nowrap;text-align:center}