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p{font-size:14.5px;line-height:1.7}.lesson-card button{width:100%;margin-top:18px}.lesson-demo{display:none}.lesson-modal[data-kind=game] .lesson-demo{background:linear-gradient(180deg, rgba(var(--scrim-rgb), .65), #03060da6), radial-gradient(ellipse 60% 60% at 50% 50%, #7dd3fc0d, transparent);border:1px solid #7dd3fc2e;border-radius:12px;margin:0 0 12px;padding:8px;display:block;position:relative}.lesson-demo canvas{width:100%;height:auto;max-height:120px;image-rendering:pixelated;image-rendering:-moz-crisp-edges;border-radius:8px;display:block}.lesson-brief{background:radial-gradient(circle at 9% 0,#7dd3fc24,#0000 34%),linear-gradient(135deg,#121b36f5,#0a0f22f5);border:1px solid #7dd3fc47;border-radius:14px;width:min(100%,800px);margin-inline:auto;padding:13px 16px 14px;position:relative;overflow:hidden;box-shadow:0 12px 30px -22px #5eead4a6}.lesson-brief[hidden]{display:none}.lesson-brief:after{content:"";background:linear-gradient(var(--accent), var(--ok));width:3px;position:absolute;inset:0 auto 0 0}.lesson-brief-head{align-items:center;gap:11px;margin-bottom:11px;display:flex}.lesson-brief-number{min-width:42px;height:28px;color:var(--accent);font:800 12px/1 var(--mono);letter-spacing:1px;background:#7dd3fc1a;border:1px solid #7dd3fc85;border-radius:7px;place-items:center;display:grid}.lesson-brief-heading{min-width:0;color:var(--fg-dim);font:700 10px/1.25 var(--mono);letter-spacing:1.4px;text-transform:uppercase;align-items:baseline;gap:10px;display:flex}.lesson-brief-heading strong{color:var(--fg);letter-spacing:0;text-overflow:ellipsis;text-transform:none;white-space:nowrap;font-size:14px;overflow:hidden}.lesson-brief-guide{color:var(--accent);font:700 10.5px/1 var(--mono);cursor:pointer;background:#7dd3fc12;border:1px solid #7dd3fc47;border-radius:8px;flex:none;margin-left:auto;padding:7px 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span:last-child{color:var(--fg);font-size:12.5px;line-height:1.45}.lesson-brief-arrow{color:var(--fg-dim);font:700 15px/1 var(--mono);align-self:center}@media (width<=680px){.lesson-brief{padding:11px 11px 12px}.lesson-brief-head{align-items:flex-start}.lesson-brief-heading>span{display:none!important}.lesson-brief-heading strong{white-space:normal;font-size:12.5px}.lesson-brief-guide{white-space:nowrap;min-height:34px}.lesson-brief-steps{grid-template-columns:1fr;gap:7px}.lesson-brief-arrow{display:none}}.touchpad{border:1px solid var(--line);border-radius:var(--radius);background:color-mix(in srgb, var(--panel) 92%, transparent);width:min(800px,100%);box-shadow:var(--shadow-soft);font-family:var(--mono);padding:10px;display:block}.touchpad-toolbar,.touchpad-controls{align-items:center;display:flex}.touchpad-toolbar{justify-content:space-between;gap:12px;padding:0 2px 9px}.touchpad-title{color:var(--fg-dim);letter-spacing:.1em;font-size:10px}.touchpad-switcher{border:1px solid var(--line);background:var(--bg);border-radius:999px;gap:3px;padding:3px;display:flex}.touchpad-switcher button{min-height:30px;color:var(--fg-dim);font:700 10px/1 var(--mono);letter-spacing:.04em;touch-action:manipulation;background:0 0;border:0;border-radius:999px;padding:0 11px}.touchpad-switcher button.active{color:var(--accent);background:#7dd3fc29;box-shadow:inset 0 0 0 1px #7dd3fc6b}.touchpad-controls{justify-content:space-between;gap:18px;min-height:164px;padding:4px 6px 2px}.touch-move-zone{flex:0 0 164px;width:164px;height:164px;position:relative}.touch-dpad{grid-template:repeat(3,52px)/repeat(3,52px);gap:4px;width:100%;height:100%;display:grid}.touch-button{background:rgba(var(--scrim-rgb), .72);min-width:0;color:var(--fg-mid);font:800 18px/1 var(--mono);-webkit-user-select:none;user-select:none;touch-action:none;border:1px solid #7dd3fc6b;border-radius:12px;justify-content:center;align-items:center;padding:0;display:flex}.touch-button.pressed{border-color:var(--accent);color:var(--fg);background:#7dd3fc40;transform:scale(.96)}.touch-up{grid-area:1/2}.touch-left{grid-area:2/1}.touch-right{grid-area:2/3}.touch-down{grid-area:3/2}.touch-joystick{background:linear-gradient(90deg, transparent 49.5%, #7dd3fc1f 50%, transparent 50.5%), linear-gradient(transparent 49.5%, #7dd3fc1f 50%, transparent 50.5%), radial-gradient(circle, #7dd3fc1f, rgba(var(--scrim-rgb), .72) 68%);touch-action:none;border:1px solid #7dd3fc61;border-radius:50%;width:154px;height:154px;margin:5px;display:none;position:relative;box-shadow:inset 0 0 24px #00000059}.touch-joystick-knob{pointer-events:none;background:#1c2d46f0;border:2px solid #7dd3fcb8;border-radius:50%;width:64px;height:64px;margin:-32px;transition:transform 80ms ease-out;position:absolute;top:50%;left:50%;box-shadow:0 8px 18px #0006,inset 0 0 14px #7dd3fc29}.touch-joystick.active .touch-joystick-knob{transition:none}.touchpad[data-layout=joystick] .touch-dpad{display:none}.touchpad[data-layout=joystick] .touch-joystick{display:block}.touch-joint-zone{flex:auto;grid-template-columns:repeat(2,minmax(112px,1fr)) minmax(88px,.7fr);gap:10px;display:none}.touchpad[data-stage=joint_teleop] .touchpad-switcher,.touchpad[data-stage=joint_teleop] .touch-move-zone,.touchpad[data-stage=joint_teleop] .touch-actions{display:none}.touchpad[data-stage=joint_teleop] .touchpad-controls{min-height:0;padding-inline:0}.touchpad[data-stage=joint_teleop] .touch-joint-zone{display:grid}.touch-joint-group,.touch-joint-utility{grid-template-columns:repeat(2,minmax(52px,1fr));gap:8px;display:grid}.touch-joint-group{background:rgba(var(--scrim-rgb), .4);border:1px solid #7dd3fc4d;border-radius:10px;padding:8px}.touch-joint-label{color:var(--accent);letter-spacing:.05em;text-align:center;grid-column:1/-1;font-size:11px}.touch-joint-button{min-height:64px;font-size:26px}.touch-joint-utility{grid-template-columns:1fr}.touch-joint-precision,.touch-joint-reset{min-height:52px;padding-inline:8px;font-size:11px}.touch-joint-precision{color:var(--accent)}.touch-joint-reset{color:var(--warn)}.touch-actions{grid-template:repeat(2,58px)/repeat(2,minmax(58px,72px));gap:8px;display:grid}.touch-actions .touch-button{font-size:12px}.touch-actions .touch-boost{color:var(--accent)}.touch-actions .touch-ok{color:var(--ok)}.touch-actions .touch-reset{color:var(--warn)}@media (width<=380px){.touchpad{padding:8px}.touchpad-controls{gap:8px;padding-inline:0}.touch-move-zone{flex-basis:146px;width:146px;height:146px}.touch-dpad{grid-template:repeat(3,46px)/repeat(3,46px)}.touch-joystick{width:140px;height:140px;margin:3px}.touch-actions{grid-template:repeat(2,54px)/repeat(2,minmax(50px,1fr));gap:6px}.touch-joint-zone{grid-template-columns:repeat(2,minmax(96px,1fr));gap:6px}.touch-joint-utility{grid-column:1/-1;grid-template-columns:repeat(2,1fr)}.touch-joint-button{min-height:58px}}.stage-tool-panel{max-width:100%}@media (width<=640px){.bt-rule-editor{grid-template-columns:auto minmax(0,1fr)!important;gap:7px 6px!important;padding:9px!important}.bt-header-cell,.bt-spacer{display:none}.bt-rule-row{grid-template-columns:auto minmax(0,1fr) auto minmax(0,1fr);min-width:0;gap:5px!important;padding:2px 0!important;display:grid!important}.bt-rule-select{width:100%;min-width:0}.bt-action{min-height:38px;padding-inline:7px!important}.bt-status{gap:5px;display:grid;grid-column:1/-1!important}.bt-pad-hint{line-height:1.45;float:none!important}.tf-puzzle-panel{grid-template-columns:1fr;gap:7px!important;padding:9px!important;display:grid!important}.tf-puzzle-control{grid-template-columns:28px minmax(0,1fr) 64px;width:100%;padding:3px 0!important;display:grid!important}.tf-puzzle-slider{min-width:0;width:100%!important}.tf-puzzle-reminder{border-top:1px solid #7dd3fc2e;padding-top:5px}}@media (width<=390px){.bt-rule-editor{font-size:10px!important}.bt-rule-row{grid-template-columns:auto minmax(0,1fr)}.bt-rule-row>span:nth-child(3){display:none}.bt-rule-row .bt-rule-select:last-child{grid-column:2}}