/* Robolab: a calm, approachable workshop for grades 5–11. */
:root{
  --paper:#f5f7fa;--white:#fff;--ink:#24344a;--muted:#607086;
  --line:#dce4ee;--blue:#2f61d5;--blue-dark:#234bb1;--orange:#ee7947;
  --lime:#dceec5;--scene-paper:#eef3f8;
  --radius-xl:28px;--radius-lg:22px;--radius-md:14px;--radius-sm:9px;
  --shadow-card:0 5px 24px #22365309;--shadow-lift:0 10px 28px #22365312;
}
body{background:var(--paper);color:var(--ink);font-size:15px}
h1,h2,h3{letter-spacing:-.035em;line-height:1.16}
h1{font-size:clamp(34px,4vw,48px);font-weight:700}
button:hover:not(:disabled){filter:none}
button,a,input,select,textarea,summary{touch-action:manipulation}
button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #ee7947;outline-offset:3px}
.primary-button,.secondary-button{border-radius:var(--radius-md);min-height:46px;padding:13px 20px;font-size:13px;font-weight:600;transition:background .16s,box-shadow .16s,transform .16s}
.primary-button{border-color:transparent;box-shadow:0 4px 10px #2f61d51c}
.primary-button:hover{background:var(--blue-dark);box-shadow:0 6px 16px #2f61d52a}
.secondary-button{border-color:var(--line);background:var(--white)}
.secondary-button:hover{background:#eef3fb;border-color:#bdcce5;color:var(--blue)}
.primary-button:active,.secondary-button:active{transform:translateY(1px)}
.primary-button:disabled,.secondary-button:disabled{box-shadow:none}
.icon-button,.more-button,.stage-buttons button{border-radius:11px;border-color:var(--line);background:#f5f7fb;min-width:38px;min-height:38px}
.text-link{font-size:13px;font-weight:500;text-decoration:none}
.text-link:hover{text-decoration:underline}
.eyebrow{font:600 11px/1.5 var(--font);letter-spacing:.045em;margin-bottom:13px;color:var(--blue)}
.back-link{font:500 13px/1.5 var(--font);margin-bottom:22px}
.tag,.level-pill,.family-status-pill{border-radius:8px;border-color:transparent;background:#eef3fb;padding:6px 10px;font:600 11px/1.4 var(--font);letter-spacing:0}

/* Header and page frame. */
.site-header{position:sticky;top:14px;z-index:40;width:calc(100% - 64px);max-width:1280px;height:76px;margin:16px auto 0;padding:0 24px;gap:28px;border:1px solid #e8edf3;border-radius:23px;background:#fff;box-shadow:var(--shadow-card)}
.brand{font-size:28px;letter-spacing:-1px;gap:10px}
.brand-mark{width:40px;height:40px;border-radius:13px;font-size:30px;box-shadow:0 3px 9px #2f61d524}
.brand-mark>span{font-size:12px;top:4px;right:5px}
.brand-period{font:600 8px/1 var(--font);margin-top:10px;color:var(--muted);letter-spacing:.04em}
.main-nav{height:auto;gap:4px}
.main-nav a{height:auto;padding:11px 15px;border:0;border-radius:12px;font-size:13px;font-weight:500;color:#56667b}
.main-nav a.active{background:#edf3ff;color:var(--blue);border:0}
.main-nav a:hover{color:var(--blue);background:#f4f7fc}
.header-utility{gap:16px}
.teacher-link{font:500 12px/1.5 var(--font);color:var(--muted)}
.avatar{height:38px;width:38px;border:0;background:#e4efd7;color:#36544b;font:600 14px var(--font)}
.app-shell{max-width:1360px}
.context-bar{padding:20px 40px 10px;font:11px/1.5 var(--font);letter-spacing:0;color:#718095;gap:12px}
.context-bar>.breadcrumb:before{content:'›';margin-right:12px;color:#9babbe}
.local-status{font-size:10px;color:#65748a}
.local-status>span{width:6px;height:6px;background:#559c7b}
main{padding:20px 40px 60px}
.page-intro{padding:12px 0 22px;margin-bottom:24px;border:0;align-items:center}
.intro-sub{font-size:15px;line-height:1.7;color:var(--muted)}
.section-heading{margin:36px 0 20px}
.section-heading h2{font-size:27px;font-weight:650;letter-spacing:-.6px}
.section-heading>span{font:500 11px/1.5 var(--font);letter-spacing:0}

/* A hands-on first screen, with the rover as the illustration. */
.play-home{grid-template-columns:1.05fr 1fr;gap:40px;align-items:center;background:#eaf1f8;border:0;border-radius:32px;padding:36px 40px;margin:4px 0 24px}
.play-home-copy .eyebrow{display:inline-flex;align-items:center;background:#fff;padding:7px 12px;border-radius:9px;text-transform:none;letter-spacing:0;font-size:12px;margin:0}
.play-home-copy h1{font-size:clamp(46px,5.2vw,68px);line-height:1.06;letter-spacing:-2.8px;font-weight:700;margin:23px 0}
.play-home-copy h1 span{color:var(--blue)}
.play-home-copy>p{font-size:17px;line-height:1.7;max-width:390px;color:#52657f;margin-bottom:25px}
.play-home-copy>.primary-button{font-size:14px;padding:15px 24px;min-height:50px}
.home-count{font:12px/1.5 var(--font);margin-top:20px;color:var(--muted)}
.home-count b{font-size:16px;font-weight:650}
.mini-lab{border:0;border-radius:26px;background:#fff;overflow:hidden;box-shadow:0 8px 28px #233f6410}
.mini-lab-head{border:0;padding:17px 20px 4px;font:600 11px/1.5 var(--font);letter-spacing:0;color:#5b708a}
.mini-lab-head>button{width:34px;height:34px;border-radius:50%;background:#f1f5fa;color:var(--blue)}
.mini-lab>svg{max-height:278px}
.mini-lab>svg>rect{rx:18px}
.mini-lab>svg text{font-family:var(--font);font-size:10px;letter-spacing:.2px}
.mini-controls{padding:0 18px 17px;gap:9px;grid-template-columns:1fr 1.25fr 1fr}
.mini-controls>button{border:0;background:#f0f4fa;border-radius:13px;min-height:52px;font-size:25px;color:#425976;gap:8px;transition:background .16s,transform .16s}
.mini-controls>button small{font:500 12px var(--font)}
.mini-controls>button:hover{background:#e4ecf7}
.mini-controls>button.mini-forward:hover{background:var(--blue-dark)}
.mini-feedback{padding:13px 20px;background:#f0f6ef;border:0;min-height:48px;font-size:12px;line-height:1.5;color:#45614e}
.mini-won{box-shadow:0 8px 28px #46845920}
.next-mission-strip{padding:20px 24px;gap:20px;background:#fff;border:1px solid #e7edf5;border-radius:20px;box-shadow:var(--shadow-card);margin:0 0 16px;transition:box-shadow .18s}
.next-mission-strip:hover{box-shadow:var(--shadow-lift)}
.next-mission-label{font:500 11px/1.5 var(--font);color:var(--muted);max-width:120px}
.next-mission-strip b{font-size:20px;font-weight:600;letter-spacing:-.4px}
.next-mission-strip>.icon{margin-left:auto}
.depth-plan-link{border:0;border-radius:20px;background:#e5f0e4;padding:23px 25px;margin:16px 0 30px;color:#314e43}
.depth-plan-link:hover{color:#244a38;background:#ddecdb}
.depth-plan-link b{font-size:19px;font-weight:600}
.depth-plan-link small{font-size:13px;line-height:1.6;color:#536d60}
.material-search{display:block;max-width:520px;background:#fff;border:1px solid var(--line);border-radius:14px;margin:18px 0 24px;overflow:hidden}
.material-search input{padding:14px 40px 14px 17px;font-size:14px}
.material-search span{right:16px;top:10px;color:#7a8aa1;font-size:23px}
.search-results{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden}
.search-result{border-color:var(--line);padding:18px}

/* Course cards: distinct subject drawings, legible progress, no heavy frame. */
.world-grid{gap:18px;margin-top:18px}
.world-card{display:flex;flex-direction:column;min-height:242px;padding:23px;border:1px solid #ffffffa0;border-top-width:1px;border-radius:24px;box-shadow:none;overflow:hidden;transition:transform .18s,box-shadow .18s}
.world-card:nth-child(6n+1){background:#fff0e4}
.world-card:nth-child(6n+2){background:#e8effd}
.world-card:nth-child(6n+3){background:#e7f1e9}
.world-card:nth-child(6n+4){background:#fcf1d8}
.world-card:nth-child(6n+5){background:#e4f1f4}
.world-card:nth-child(6n+6){background:#eeeafa}
.world-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift);color:var(--ink)}
.world-number{font:600 12px/1.5 var(--font);display:inline-grid;place-items:center;width:31px;height:31px;background:#ffffffad;border-radius:10px;color:#68788c}
.world-card .course-thumb{right:19px;top:17px;width:86px;height:86px;border:0;background:transparent;border-radius:0}
.world-card .course-thumb svg{width:82px;height:82px}
.world-card h3{font-size:25px;line-height:1.2;font-weight:600;letter-spacing:-.7px;max-width:230px;margin:40px 0 23px}
.world-bottom{margin-top:auto;gap:12px;font:12px/1.5 var(--font);color:#5b6c82}
.world-bottom>.icon{height:28px;width:28px;padding:5px;background:#fff8;border-radius:50%;color:#476a9c}
.course-progress{appearance:none;display:block;width:100%;height:5px;margin:13px 0 0;overflow:hidden;border:0;border-radius:3px;background:#fff8;color:var(--blue)}
.course-progress::-webkit-progress-bar{background:#fff8;border-radius:3px}
.course-progress::-webkit-progress-value{background:var(--blue);border-radius:3px}
.course-progress::-moz-progress-bar{background:var(--blue);border-radius:3px}
.course-thumb{border-radius:18px;background:#eff4fb;border:0;overflow:hidden}
.course-thumb svg{stroke-linecap:round;stroke-linejoin:round}
.ac-branch{border:1px solid #e5ebf4;border-radius:22px;background:#fff;padding:23px;gap:20px;transition:box-shadow .18s}
.ac-branch:hover{color:var(--ink);box-shadow:var(--shadow-lift)}
.ac-branch h3{font-size:21px;font-weight:600}
.ac-branch p{font-size:14px;color:var(--muted)}
.ac-branch small{font-size:12px}
.ac-branch .course-thumb{background:#eef3fb;border-radius:16px}

/* Lessons and experiments. */
.mission-course-head,.mission-title-row,.depth-lesson-title,.reader-head,.compact-guide header{border-color:var(--line);border-bottom-width:1px}
.mission-course-head{padding:16px 0 28px;margin-bottom:22px}
.mission-course-head h1{font-size:46px;font-weight:700;letter-spacing:-1.6px}
.mission-course-head>.course-thumb{background:#eef3fb;border-radius:26px;padding:10px}
.ac-course-result{border:0;padding:23px 26px;margin:0 0 26px;background:#e7f0e6;border-radius:20px}
.ac-course-result>b{font-size:13px;color:#45664f}
.ac-course-result p{font-size:20px;line-height:1.5;margin:8px 0 12px}
.ac-course-result a,.ac-course-result span{font-size:13px;color:#597061}
.mission-map{gap:16px;margin:24px 0}
.mission-tile{border:1px solid #e5ebf2;border-radius:22px;background:#fff;padding:25px;min-height:170px;gap:18px;box-shadow:var(--shadow-card)}
.mission-tile:hover{box-shadow:var(--shadow-lift);transform:translateY(-2px);border-color:#c7d6eb}
.mission-tile.is-complete{background:#f1f8ed}
.tile-marker,.coach-number{border:0;border-radius:12px;background:#eaf1ff;color:var(--blue);font-family:var(--font)}
.mission-tile small,.ac-status{font:500 11px/1.5 var(--font);letter-spacing:0}
.mission-tile h2{font-size:22px;font-weight:600;line-height:1.25}
.mission-tile p{font-size:14px;line-height:1.6}
.depth-lesson-title{padding-bottom:24px;margin-bottom:24px}
.depth-lesson-title h1{font-size:42px;font-weight:700;margin:12px 0 24px;letter-spacing:-1.4px}
.depth-steps{gap:8px}
.depth-steps button,.ac-stepper button{border-radius:12px;border:1px solid var(--line);background:#fff;font-size:13px;padding:12px;min-height:46px;gap:9px}
.depth-steps button span,.ac-stepper button span{font:600 11px var(--font)}
.depth-steps .current,.ac-stepper .current{background:var(--blue);color:#fff;border-color:transparent;box-shadow:0 4px 10px #2f61d522}
.depth-steps .done:not(.current){background:#eaf4e5;border-color:#d1e4c8;color:#476846}
.depth-steps button:disabled,.ac-stepper button:disabled{background:#edf1f6;border-color:transparent;opacity:.62;color:#7a879a}
.depth-task-head{margin:25px 0 22px}
.depth-task-head h2{font-size:29px;letter-spacing:-.75px}
.depth-task-head p{font-size:16px;color:#56667b;line-height:1.65}
.depth-task-tabs{gap:7px}
.depth-task-tabs button{border:0;border-radius:13px;background:#e7edf7;width:43px;height:43px;color:#526d95;font-weight:600}
.depth-task-tabs [aria-pressed=true]{background:#dfeafb;color:var(--blue);box-shadow:inset 0 0 0 2px #adc3ed}
.depth-bench{border:1px solid #e3eaf3;border-radius:26px;background:#fff;box-shadow:var(--shadow-card);grid-template-columns:minmax(0,1.3fr) minmax(300px,1fr)}
.depth-visual{padding:25px}
.depth-console{border:0;background:#eef3fa;padding:28px;gap:18px;justify-content:center}
.depth-settings{gap:18px}
.depth-control{font-size:12px;line-height:1.5}
.depth-control>span{font-weight:600;margin-bottom:10px;color:#4b607d}
.depth-control select,.depth-number input[type=number]{border:1px solid #d4dfec;background:#fff;border-radius:11px;padding:12px;font-size:14px;min-height:43px}
.depth-number input[type=number]{width:82px;font-family:var(--mono)}
.depth-number input[type=range]{height:26px;accent-color:var(--blue)}
.depth-console .primary-button{min-height:49px;font-size:14px}
.depth-console #depth-change-state{font-size:12px!important;line-height:1.6;color:#63758e}
.depth-caption{font:11px/1.6 var(--font);color:var(--muted);margin:13px 0 18px}
.depth-metrics{border:0;border-radius:16px;overflow:hidden;background:#f7f9fc;margin:17px 0;gap:0}
.depth-metrics>div{background:#f7f9fc;padding:14px 13px;border:0;border-right:1px solid #e8edf5;border-bottom:1px solid #e8edf5}
.depth-metrics dt{font-size:11px;line-height:1.5;color:#677b94}
.depth-metrics dd{font:500 24px/1.2 var(--mono);letter-spacing:-.9px;margin-top:10px;color:#2b4162}
.depth-small{font-size:12px!important;color:var(--muted)}
.depth-feedback,.depth-old-note{border-radius:18px;border:1px solid transparent;padding:20px 23px;font-size:14px}
.depth-feedback.success{background:#eaf5e7;border-color:#d6e8cd;color:#385e3a}
.depth-feedback.retry{background:#fff2e9;border-color:#f3dbc9;color:#84523d}
.depth-verdict{gap:9px}
.depth-verdict li{border:0;border-radius:12px;background:#ffffffb3;padding:13px}
.depth-verdict span{color:#667589}
.depth-reading,.depth-evidence,.mission-notebook,.guide-chapter,.lesson-details,.ac-evidence{border:1px solid #e5ebf3;border-radius:17px;background:#fff;padding:0 20px;overflow:hidden}
.depth-reading,.depth-evidence{padding:18px 22px}
.mission-notebook>summary,.guide-chapter>summary{padding:19px 0;font-size:14px;font-weight:500}
.notebook-content{padding:3px 0 24px}
.depth-reading summary,.depth-evidence summary{font-size:14px;font-weight:500}
.depth-command-list{border:0;border-radius:20px;background:#edf3fc;padding:15px 18px}
.depth-command-list>div{border-color:#dae4f2;padding:12px 7px;font-size:14px}
.depth-command-list span{font-size:12px;color:var(--blue)}
.depth-question h3{font-size:25px;line-height:1.4}
.quiz-option{border:1px solid #dce5f1;border-radius:14px;padding:15px 17px;background:#fff;font-size:14px;transition:border-color .16s,background .16s}
.quiz-option>span,.mission-quiz .quiz-option span{border:0;border-radius:8px;background:#edf2fa;width:27px;height:27px;font:600 12px var(--font)}
.quiz-option:hover{border-color:#aac2e7;background:#f6f9fe}
.quiz-option.selected{border-color:#97b4e8;background:#eaf1ff}
.quiz-option.correct{background:#eaf5e7;border-color:#b9d6b0}
.quiz-option.incorrect{background:#fff0e8;border-color:#efba9e}
.ac-predict-art p,.ac-phase-card,.depth-practice,.depth-transfer form,.depth-module-plan,.ac-conclusion,.mission-victory{border:1px solid #e4ebf3;border-radius:24px;background:#fff;box-shadow:var(--shadow-card)}
.ac-conclusion{padding:30px;max-width:840px}
.ac-conclusion h2{font-size:28px}
.depth-transfer-grid>div>p{border:0;border-radius:19px;background:#e8f2e5;padding:22px;font-size:16px;line-height:1.7}
.depth-transfer input,.depth-transfer select,.ac-conclusion textarea,.ac-review-form textarea,.lesson-notes textarea,.family-form input:not([type=radio]),.family-inline-form input,.text-field{border-color:#ccd8e8;border-radius:12px;background:#fafcff;font-size:14px;line-height:1.6}
.depth-transfer label{font-size:20px;line-height:1.5}
.depth-module-plan{padding:28px}
.depth-module-plan p{line-height:1.6;font-size:16px}
.depth-module-plan small{font-size:12px;line-height:1.7}
.depth-roadmap>li{border-color:#c8d9f5}
.depth-roadmap h3{font-size:25px}
.depth-legacy-progress{border-color:var(--line);border-radius:17px;background:#fff}
.ac-project-choices button{border:1px solid #d9e3f0;border-radius:17px;background:#fff;padding:20px}
.ac-project-choices .selected{background:#edf4ff;box-shadow:inset 0 0 0 1px #b2c8ec;border-color:#a8c0e7}
.ac-project-picker>summary{border-color:var(--line);border-radius:14px;background:#eef3fb}
.ac-test-list>span{border:0;border-radius:9px;background:#eef3fb;font:12px/1.5 var(--font)}
.ac-test-list .passed{background:#e5f2dc;color:#44653b}

/* Simulator and program editing retain the technical drawing inside a softer frame. */
.workbench,.mission-bench{align-items:start}
.component-image{background:#eef3fb;border-radius:10px}
.assembly-preview{background:#eef3f8}
.assembly-preview:before{border-color:#d3deeb;border-radius:18px}
.program-console{background:#eef3f8}
.mission-block-start{border:0;border-radius:12px;background:#e8f2dc;color:#526f43;font-size:13px}
.panel{border:1px solid #e0e8f1;border-radius:22px;box-shadow:var(--shadow-card)}
.panel-head{border-color:#e5ebf3;background:#fff;padding:19px 20px}
.panel-title{font-size:14px;font-weight:600}
.panel-number{font:500 11px var(--font);color:#8998ad}
.track-stage{background:var(--scene-paper)}
.track-stage canvas{border-radius:0}
.stage-buttons{gap:5px}
.track-info,.stage-tag,.assembly-caption,.component-heading,.section-label,.console-title{font-family:var(--font);letter-spacing:.03em}
.simulation-controls{border-color:#e4ebf3;background:#fff}
.simulation-controls .icon-button{border-color:var(--line);border-radius:12px}
.mission-banner,.mission-coach,.below-card,.ac-observation,.goal-box,.practice-box,.practice-target,.quiz-box,.takeaways,.learning-route-note,.instrument,.teacher-playbook{border-color:var(--line);border-radius:19px}
.mission-banner{background:#eaf1fd;border:0;padding:22px 25px}
.mission-banner .mission-number{border:0;border-radius:13px;background:#dce8ff;color:var(--blue)}
.mission-banner h2{font-size:22px;font-weight:600}
.mission-coach{padding:19px 22px;background:#eaf2e7;border:0}
.coach-help{border-color:#bcd0b5;background:#fff9;border-radius:11px;font-size:12px;min-height:40px}
.component-item,.robot-footer,.sensors,.program-console{border-color:#e3ebf4}
.component-toggle{border:1px solid #d7e2ef;border-radius:10px;background:#f3f7fc}
.component-toggle.installed{background:#e8f3e0;border-color:#c9ddb9;color:#496a3c}
.mode-tabs{border:0;border-radius:13px;background:#edf2f8;padding:4px;gap:4px}
.mode-tabs button{border:0;border-radius:10px;min-height:37px;font-size:13px;font-weight:500;color:#687b96}
.mode-tabs button.active{background:#fff;color:var(--blue);box-shadow:0 2px 6px #324c7112}
.program-editor{background:radial-gradient(#d9e2ee .65px,transparent .65px) 0 0/17px 17px;border-color:var(--line)}
.python-editor{border-radius:16px;background:#26364d;overflow:hidden}
.python-editor textarea{background:#26364d;color:#eef3ff;line-height:1.8;padding:19px}
.python-info{font-size:12px;line-height:1.6;color:var(--muted)}
.ac-block{border:1px solid #d3e1f4;border-radius:15px;background:#edf4ff;padding:12px;box-shadow:0 2px 6px #223d6605}
.ac-block-assign{background:#edf5e9;border-color:#d1e1c6}
.ac-block-if,.ac-block-while,.ac-block-for{background:#fff3e5;border-color:#f0dfc7}
.ac-block-pass{border-color:#dce3ed;background:#f5f7fb}
.ac-block-field input,.ac-block select,.ac-expression{border:1px solid #d4dfef;border-radius:9px;background:#fff;min-height:34px;font-size:12px}
.ac-block-tools button{border:0;border-radius:8px;background:#fff9;min-width:30px;min-height:30px;color:#6b7f99}
.ac-value-pick{border-radius:8px;background:#fff;border-color:#d4dfef}
.ac-inline-add{border:1px dashed #c1d2e8;border-radius:11px;background:#f8fbff;color:#527aaa;padding:11px;font-size:12px;min-height:40px}
.ac-nest{border-color:#e4d4bb;border-left-width:2px;padding-left:12px}
.ac-palette button{border:1px solid var(--line);border-radius:14px;background:#f8faff;padding:18px}
.ac-palette button:hover{background:#edf3ff;border-color:#aac1e6}
.mission-components,.mission-part,.ac-live-inspector,.depth-live-inspector,.depth-current-line{border-color:var(--line);border-radius:15px}
.mission-part{border-radius:11px;background:#f7faff;min-height:42px}
.mission-part.installed{background:#e9f4e1;border-color:#c5dcb5}
.depth-live-inspector{background:#f1f5fc;padding:18px}
.depth-current-line,#depth-live-memory dl>div{background:#fff;border-radius:10px;border-color:#dce6f4}
.ac-block.depth-executing{outline:2px solid #df985f;outline-offset:2px;border-color:#e9bc98;background:#fff0dd}
.rover-playback svg{border-radius:19px;overflow:hidden}
.rover-playback svg>rect:first-child{fill:var(--scene-paper);rx:19px}
.rover-playback svg path[stroke="#d9d7cd"]{stroke:#d4deeb}
.rover-playback-controls{gap:7px;padding-top:12px;font-size:12px}
.rover-playback-controls button,.rover-playback-controls select{border-color:#d4dfed;border-radius:10px;min-height:38px;background:#f8faff;font-size:12px}
.rover-playback-controls button:hover{background:#edf3ff}
.rover-playback-status{font-size:11px;color:var(--muted)}
.rover-guide-diagram{border-color:var(--line)}
.ac-field-meta select,.ac-mount-controls input,.track-select{border-radius:9px;border-color:var(--line)}
.mission-console{border-color:var(--line);border-radius:14px;background:#f3f6fb}
.code-block{border:0;border-radius:17px;background:#26364d}
.code-block-head{border-color:#40516a;background:#26364d}
.code-block pre{line-height:1.8;font-size:13px}
.lesson-diagram{border:0;border-radius:20px;background:#edf3f8}
.reader-contents{border-color:var(--line)}
.reader-contents a{border-color:var(--line);font-size:12px}
.reader-contents a.current{background:#eaf2ff;border-radius:11px;padding:13px 10px}
.reader-section p{color:#52667f;line-height:1.85}

/* Guides, records, and the family views. */
.guide-list{border:0}
.guide-row,.short-guides .guide-row{border:1px solid #e4ebf4;border-radius:18px;background:#fff;padding:22px 24px;margin-bottom:12px;transition:box-shadow .18s}
.guide-row:hover{box-shadow:var(--shadow-card);color:var(--ink)}
.guide-index{background:#fff0e6;color:#c9744a;border-radius:9px;min-width:30px;text-align:center;padding:5px!important;font-family:var(--font)!important}
.guide-row h3,.short-guides .guide-row h3{font-size:21px;font-weight:600}
.guide-row p{font-size:13px;line-height:1.7}
.guide-row small{font:500 11px/1.5 var(--font)}
.command-table,.data-table{border-color:var(--line);border-radius:15px;overflow:hidden}
.command-table th,.command-table td,.data-table th,.data-table td{border-color:var(--line)}
.table-wrap{border:1px solid var(--line);border-radius:17px;background:#fff;overflow-x:auto}
.data-table th{background:#eef3fb;color:#63758d;font-family:var(--font);font-weight:600;letter-spacing:.03em}
.task-card{background:#fff;border:1px solid #e4ebf3;border-radius:23px;padding:19px;overflow:hidden;box-shadow:var(--shadow-card)}
.task-illustration{background:#edf3f9;border:0;border-radius:16px;overflow:hidden;height:165px}
.task-card h3{font-size:24px;font-weight:600;line-height:1.3}
.task-card p{font-size:14px;line-height:1.7;color:var(--muted)}
.task-card>button{background:#edf3ff;border-radius:12px;padding:12px 15px;min-height:44px;border:0;justify-content:space-between;font-size:13px;color:var(--blue)}
.task-card>button:hover{background:#dfeafe}
.task-topline{font:11px/1.5 var(--font);color:#73839a}
.filter-tabs{background:#eaf0f7;border-radius:12px;padding:4px}
.filter-tabs button{border:0;border-radius:9px;padding:8px 13px;font-size:12px}
.filter-tabs .active{background:#fff;box-shadow:0 2px 5px #263f6010;color:var(--blue)}
.stat-card,.ac-skill-card,.ac-student,.ac-backup,.ac-review-queue,.family-paper,.family-plans,.family-result-hero{border:1px solid #e2eaf3;border-radius:24px;background:#fff;box-shadow:var(--shadow-card)}
.stat-card{padding:23px}
.stat-card strong{font-family:var(--font);color:#345684}
.stat-card small{font:600 12px var(--font)}
.ac-progress-strip,.family-stats{border:0;border-radius:22px;background:#fff;overflow:hidden;box-shadow:var(--shadow-card);gap:0}
.ac-progress-strip>div,.family-stats article{border-color:#e4ebf3;padding:24px}
.ac-progress-strip b,.family-stats strong{font:600 36px/1.3 var(--font);color:#325381}
.ac-progress-strip span,.family-stats span{font-size:13px;line-height:1.5;color:var(--muted)}
.ac-skill-card{padding:26px}
.ac-skill-card h3{font-size:23px;font-weight:600}
.ac-skill-card .course-thumb{background:#edf3fb;border-radius:15px}
.ac-skill-card.earned{border:1px solid #d1e5c7;background:#f1f8ec}
.ac-skill-card>b,.ac-skill-card summary{font:500 13px/1.5 var(--font)}
.ac-skill-card a small{font-size:11px}
.ac-evidence{margin:13px 0;background:#f9fbfe;padding:0;border-radius:13px}
.ac-evidence summary{padding:15px;font-size:13px}
.ac-evidence-body blockquote{background:#edf3fb;border:0;border-radius:12px;margin-left:0;margin-right:0;padding:15px}
.ac-evidence-body pre{border-radius:12px}
.ac-backup,.ac-review-queue{padding:25px}
.family-auth-grid{gap:22px}
.family-paper{padding:30px}
.family-paper h2{font-weight:600;font-size:28px;line-height:1.3}
.family-paper p{font-size:15px;line-height:1.75}
.family-lime{background:#edf5e8;border-color:#dfebd8;box-shadow:none}
.family-number{font:600 11px/1.5 var(--font);letter-spacing:.025em;color:#7889a0}
.family-small,.family-paper small{font-size:13px;line-height:1.65}
.family-error,.family-form-error{color:#aa3b25!important}
.family-profile-avatar{border:0;background:#e7f1db;color:#506a43}
.family-profile-row{border-color:var(--line)}
.family-child-tabs a{border:1px solid #dce6f2;background:#fff;border-radius:12px;padding:11px 17px;font-weight:500}
.family-child-tabs .active{border-color:transparent;background:var(--blue);color:#fff}
.family-result-hero{background:#e7f1e5;border-color:transparent;box-shadow:none;padding:36px 40px;border-radius:28px}
.family-result-hero h2{font-size:36px;font-weight:650;line-height:1.25}
.family-result-hero p{color:#586d5e;font-size:15px;line-height:1.7}
.family-progress-dial{border:8px solid #ccdfbe;background:#f6fbf1;width:210px;height:210px;color:#48673c;box-shadow:0 8px 22px #536f4220}
.family-progress-dial strong{font-weight:650;letter-spacing:-2px;font-size:63px}
.family-progress-dial span{font-size:12px;line-height:1.5;max-width:150px}
.family-value{margin:65px 0 28px}
.family-value h2,.family-plans h2{font-size:34px;font-weight:650}
.family-value-grid{border:0;gap:18px;padding:0}
.family-value-grid article{background:#eef3fa;border-radius:22px;padding:25px}
.family-value-grid article:nth-child(2){background:#edf4e9}
.family-value-grid article:nth-child(3){background:#fff1e5}
.family-value-grid span{display:grid;place-items:center;height:30px;width:30px;background:#fff8;border-radius:9px}
.family-value-grid p,.family-plans p{font-size:15px;line-height:1.75}
.family-plans{background:#edf2fa;border:0;padding:33px;gap:35px;border-radius:28px;box-shadow:none}
.family-code,.family-evaluation{border-radius:14px;border-color:var(--line)}
.family-status-pill{background:#e8f2df;color:#547342}
.family-evaluation p{font-size:14px}
.tournament-hero{border:0;border-radius:28px;background:#e8effb;box-shadow:none;padding:38px}
.empty-state{background:#fff;border:1px solid var(--line);border-radius:24px;padding:42px;box-shadow:var(--shadow-card)}
.empty-state h3{font-size:23px}
.empty-state p{font-size:14px;line-height:1.7}
.footer{border-top:1px solid #dde5ef;padding:30px 40px 34px;margin:0 40px;gap:25px}
.footer-wordmark{font-size:27px;font-weight:750;color:#324762}
.footer p,.footer>div a,.footer>div button{font:12px/1.6 var(--font);color:var(--muted)}
.footer-edition{font:11px/1.7 var(--font);letter-spacing:0;color:#7d8da3}
.toast{border-radius:15px;background:#283e5c;box-shadow:var(--shadow-lift);font:13px/1.5 var(--font);padding:15px 21px}
dialog{border:1px solid #e0e7f0;border-radius:26px;box-shadow:0 25px 80px #1c2e4d38;background:#fff;overflow:hidden}
dialog::backdrop{background:#22375466;backdrop-filter:blur(3px)}
.modal-head{border-color:var(--line);padding:24px 27px}
.modal-head h2{font-size:27px;font-weight:650}
.modal-content{padding:24px 27px;font-size:14px;line-height:1.7}
.modal-content pre{border-radius:13px;background:#edf3fb;padding:18px}
.result-stats>div{border-color:var(--line);border-radius:12px;background:#f3f7fc}

@media(max-width:1100px){
 .site-header{gap:18px;padding:0 20px}.main-nav a{padding:10px 11px;font-size:12px}.header-utility{gap:10px}
 .brand{font-size:25px}.play-home{padding:30px;gap:28px}.play-home-copy h1{font-size:57px}.play-home-copy>p{font-size:16px}
 .world-card h3{font-size:23px}.world-card{padding:21px}.ac-branch{gap:15px}
 .depth-bench{grid-template-columns:minmax(0,1.15fr) minmax(280px,1fr)}.depth-console{padding:24px}
}
@media(max-width:900px){
 .site-header{width:calc(100% - 48px);gap:14px;padding:0 18px;height:70px;top:10px;margin-top:12px;border-radius:19px}
 .brand{font-size:23px;gap:8px}.brand-mark{width:35px;height:35px;border-radius:11px;font-size:27px}.brand-period{display:none}
 .main-nav{gap:1px}.main-nav a{font-size:11px;padding:9px 10px}.teacher-link{font-size:11px}.avatar{width:33px;height:33px}
 main{padding:20px 24px 45px}.context-bar{padding:18px 24px 9px}.footer{margin:0 24px;padding:27px 0}
 .play-home{gap:22px;padding:25px}.play-home-copy h1{font-size:47px;letter-spacing:-2px}.play-home-copy>p{font-size:15px}
 .play-home-copy .eyebrow{font-size:11px;padding:7px 9px}.mini-lab-head{padding:12px 14px 2px}.mini-controls{padding:0 13px 13px;gap:7px}.mini-controls>button{gap:5px;font-size:22px}.mini-controls>button small{font-size:11px}
 .mini-feedback{padding:12px 15px;font-size:11px}.world-card .course-thumb{width:68px;height:68px;right:14px;top:15px}.world-card .course-thumb svg{width:66px;height:66px}
 .world-card{padding:19px;min-height:226px}.world-card h3{font-size:22px;margin-top:33px}
 .depth-bench{grid-template-columns:1fr}.depth-console{border:0;border-top:1px solid #e3eaf3;padding:24px;display:grid;grid-template-columns:1fr 1fr;gap:16px}
 .depth-settings{grid-column:1/-1;grid-template-columns:1fr 1fr;gap:18px}.depth-console .primary-button,.depth-console #depth-change-state{grid-column:1/-1}
 .depth-metrics{grid-template-columns:repeat(4,1fr)}.depth-visual{padding:23px}
 .family-result-hero{padding:29px}.mission-course-head h1{font-size:39px}
}
@media(max-width:640px){
 .site-header{width:calc(100% - 32px);margin-top:10px;top:8px;height:64px;padding:0 15px;border-radius:18px;gap:8px}
 .brand{font-size:24px}.brand-mark{width:34px;height:34px;font-size:26px}.header-utility{gap:10px}.avatar{width:34px;height:34px}
 .mobile-menu{display:grid;place-items:center;height:35px;width:35px;border-radius:10px;background:#f0f4fa;font-size:21px;color:#5a6f8b}
 .main-nav{background:#fff;border-radius:18px;border:1px solid var(--line);box-shadow:var(--shadow-lift);left:0;right:0;top:calc(100% + 8px);padding:10px;margin:0;height:auto}
 .main-nav a{font-size:14px;padding:12px 15px;border-radius:11px;border:0}.main-nav a.active{border:0}
 .teacher-link{font-size:11px}.context-bar{padding:16px 18px 5px;font-size:10px;gap:8px}.context-bar>.breadcrumb:before{margin-right:8px}.local-status{font-size:9px}
 main{padding:17px 16px 35px}.page-intro{padding:7px 2px 15px;margin-bottom:16px;gap:15px;align-items:flex-start}.page-intro h1{font-size:32px;letter-spacing:-1px}.intro-sub{font-size:14px;line-height:1.7}
 .primary-button,.secondary-button{min-height:44px;border-radius:12px;padding:12px 16px;font-size:12px;white-space:normal}
 .eyebrow{font-size:10px;margin-bottom:11px}.section-heading{margin:29px 2px 17px;gap:13px}.section-heading h2{font-size:23px;letter-spacing:-.6px}.section-heading>.text-link{font-size:11px;flex-shrink:0}
 .play-home{display:flex;flex-direction:column;padding:24px 20px 20px;gap:24px;border-radius:25px;margin:0 0 18px;align-items:stretch}
 .play-home-copy h1{font-size:46px;letter-spacing:-2px;line-height:1.08;margin:19px 0}.play-home-copy>p{font-size:15px;line-height:1.65;margin-bottom:20px;max-width:360px}
 .play-home-copy>.primary-button{padding:13px 20px;min-height:47px;font-size:13px}.play-home-copy .eyebrow{padding:7px 10px;font-size:11px}.home-count{margin-top:16px;font-size:11px}
 .mini-lab{border-radius:20px}.mini-lab>svg{max-height:222px}.mini-controls{gap:8px;padding:0 13px 13px}.mini-controls>button{min-height:46px;font-size:23px;border-radius:11px}.mini-controls>button small{font-size:11px}
 .mini-feedback{font-size:11px;min-height:45px}.mini-lab-head{font-size:10px}
 .next-mission-strip{padding:18px;gap:13px;border-radius:17px;flex-wrap:wrap}.next-mission-label{font-size:10px;max-width:none;flex-basis:100%}.next-mission-strip b{font-size:19px;flex:1}.next-mission-strip>.icon{margin-left:0}
 .depth-plan-link{border-radius:18px;padding:20px;margin:15px 0 25px}.depth-plan-link b{font-size:18px}.depth-plan-link small{font-size:12px}
 .material-search{border-radius:12px;margin:15px 0 20px}.material-search input{font-size:13px;padding:13px 38px 13px 14px}.material-search span{top:8px;font-size:22px}
 .world-grid{grid-template-columns:1fr 1fr;gap:12px;margin-top:18px}.world-card{border-radius:19px;padding:16px;min-height:235px}.world-number{width:27px;height:27px;font-size:11px;border-radius:8px}
 .world-card .course-thumb{width:60px;height:60px;right:9px;top:13px}.world-card .course-thumb svg{width:57px;height:57px}.world-card h3{font-size:20px;line-height:1.2;letter-spacing:-.6px;margin:40px 0 18px}
 .world-bottom{font-size:11px;gap:6px}.world-bottom>.icon{width:24px;height:24px;padding:4px}.course-progress{height:4px;margin-top:10px}
 .ac-branch-grid{gap:12px}.ac-branch{padding:20px 18px;border-radius:19px;gap:14px}.ac-branch h3{font-size:20px}.ac-branch p{font-size:13px}.ac-branch small{font-size:11px}
 .ac-branch .course-thumb{flex-basis:55px;width:55px;height:55px}.ac-branch .course-thumb svg{width:49px;height:49px}
 .mission-course-head{padding:8px 2px 22px;gap:15px}.mission-course-head h1{font-size:34px;letter-spacing:-1px}.mission-course-head p{font-size:14px}.ac-course-result{border-radius:18px;padding:22px 20px}.ac-course-result p{font-size:18px}.ac-course-result a,.ac-course-result span{font-size:12px}
 .mission-tile{border-radius:19px;padding:21px 18px;gap:14px;min-height:150px}.mission-tile h2{font-size:21px}.mission-tile p{font-size:13px}.mission-tile small,.ac-status{font-size:10px}
 .depth-lesson-title h1{font-size:33px;letter-spacing:-1px;margin-bottom:21px}.depth-lesson-title{padding-bottom:19px;margin-bottom:22px}.depth-steps{grid-template-columns:repeat(3,1fr);gap:7px}.depth-steps button{min-height:44px;padding:10px 6px;gap:6px;font-size:11px;border-radius:10px}.depth-steps button span{font-size:10px}
 .depth-task-head{margin:20px 1px;gap:12px}.depth-task-head h2{font-size:25px;line-height:1.25;margin-bottom:13px}.depth-task-head p{font-size:14px;line-height:1.65}.depth-task-tabs button{width:33px;height:38px;border-radius:10px;font-size:12px}
 .depth-bench{border-radius:22px}.depth-visual{padding:16px}.depth-scene{max-height:210px}.rover-playback svg{border-radius:14px}.depth-console{padding:21px 18px;gap:16px}.depth-settings{gap:18px 12px;grid-template-columns:1fr 1fr}
 .depth-control{font-size:11px}.depth-control>span{margin-bottom:8px}.depth-control select{font-size:12px;padding:10px 8px;border-radius:10px}.depth-number{gap:7px}.depth-number input[type=number]{width:59px;padding:10px 7px;font-size:12px;border-radius:10px}
 .depth-metrics{grid-template-columns:repeat(3,1fr);border-radius:13px;margin:14px 0}.depth-metrics>div{padding:12px 9px}.depth-metrics dt{font-size:10px;line-height:1.5}.depth-metrics dd{font-size:22px}
 .depth-caption{font-size:11px;line-height:1.6}.depth-console .primary-button{font-size:13px;min-height:46px}.depth-console #depth-change-state{font-size:11px!important}
 .depth-feedback{padding:19px 18px;font-size:13px;border-radius:17px}.depth-verdict li{padding:12px}.depth-next{gap:12px}.depth-next p{font-size:12px}.depth-reading,.depth-evidence{padding:18px;border-radius:16px;font-size:14px}
 .depth-command-list{padding:14px;border-radius:18px}.depth-command-list>div{font-size:13px;gap:12px}.depth-question h3{font-size:22px;line-height:1.4}.quiz-option,.mission-quiz .quiz-option{font-size:14px;line-height:1.5;padding:15px;border-radius:13px}
 .depth-transfer h2{font-size:26px;line-height:1.3}.depth-transfer-grid>div>p{font-size:14px;padding:20px}.depth-transfer form,.depth-practice,.depth-module-plan,.ac-phase-card{padding:22px 20px;border-radius:20px}.depth-transfer label{font-size:19px}
 .ac-conclusion{padding:23px 19px;border-radius:22px}.ac-conclusion h2{font-size:24px}.ac-conclusion .quiz-option{font-size:14px}.ac-project-choices button{padding:17px;border-radius:14px}
 .mission-notebook,.guide-chapter{padding:0 18px;border-radius:17px}.mission-notebook>summary,.guide-chapter>summary{font-size:13px;line-height:1.5;padding:18px 0}.reader-section p{font-size:14px}
 .mission-lab-top{gap:12px}.mission-banner{border-radius:19px;padding:20px 18px}.mission-banner h2{font-size:20px}.mission-coach{padding:17px 18px;border-radius:18px}.panel{border-radius:20px}.panel-head{padding:17px 18px}.panel-title{font-size:13px}
 .program-panel>.panel-head{border-color:var(--line)}.assembly-preview{border-color:var(--line)}.sensors{padding:16px}.component-list{padding-right:14px}.component-item b{font-size:11px}.component-item small{font-size:8px}.robot-footer{border-color:var(--line)}
 .mode-tabs button{font-size:12px}.python-editor textarea{font-size:12px}.ac-block{padding:10px;border-radius:13px}.ac-nest{padding-left:9px}.ac-block-field input,.ac-block select{font-size:11px;border-radius:8px}.ac-block-tools button{min-width:27px;min-height:27px}.ac-inline-add{font-size:11px}
 .mission-run-dock{left:12px;right:12px;bottom:10px;border:1px solid #e3eaf3;border-radius:18px;box-shadow:0 8px 28px #22395724;padding:10px 13px calc(10px + env(safe-area-inset-bottom));gap:12px;background:#fff}.mission-run-dock .primary-button{min-width:150px;border-radius:12px;min-height:44px;padding:11px 18px}.mission-run-dock>button:first-child{border-radius:10px}
 .guide-row,.short-guides .guide-row{padding:21px 18px;border-radius:18px;gap:13px;grid-template-columns:28px 1fr 16px}.guide-row h3,.short-guides .guide-row h3{font-size:20px}.guide-row p{font-size:13px}
 .task-card{padding:18px;border-radius:21px}.task-card h3{font-size:23px}.task-card p{font-size:14px}.task-illustration{height:165px;border-radius:15px}.task-topline{font-size:11px}.filter-tabs{flex-shrink:0;padding:3px}.filter-tabs button{padding:8px 9px;font-size:11px}
 .stat-card{border-radius:18px;padding:18px 12px}.stat-card small{font-size:10px}.stat-card p{font-size:11px}.ac-progress-strip>div,.family-stats article{padding:19px 13px}.ac-progress-strip b,.family-stats strong{font-size:30px}.ac-progress-strip span,.family-stats span{font-size:12px}
 .ac-skill-card,.family-paper,.ac-backup,.ac-review-queue{padding:24px 21px;border-radius:21px}.ac-skill-card h3{font-size:23px}.family-paper h2{font-size:25px}.family-paper p{font-size:14px}.family-small,.family-paper small{font-size:12px}.family-result-hero{padding:25px 22px;border-radius:24px}.family-result-hero h2{font-size:29px}.family-result-hero p{font-size:14px}
 .family-progress-dial{width:175px;height:175px;border-width:7px}.family-progress-dial strong{font-size:51px}.family-child-tabs a{font-size:12px;padding:10px 14px}.family-plans{padding:22px 19px;border-radius:24px;gap:20px}.family-value h2,.family-plans h2{font-size:29px}.family-value-grid article{padding:23px;border-radius:20px}.family-value-grid p,.family-plans p{font-size:14px}
 .tournament-hero{padding:27px 22px;border-radius:23px}.empty-state{padding:30px 21px;border-radius:21px}.empty-state h3{font-size:21px}
 .footer{margin:0 18px;padding:25px 0;gap:20px}.footer p{font-size:11px}.footer-edition{font-size:10px}.footer>div a,.footer>div button{font-size:12px}.footer-wordmark{font-size:26px}
 .toast{font-size:12px;border-radius:13px;padding:14px 18px}.modal-head{padding:21px}.modal-head h2{font-size:24px}.modal-content{padding:22px 21px;font-size:14px}.modal-content pre{font-size:11px;padding:15px}dialog{border-radius:22px}
}
@media(max-width:380px){
 .site-header{padding:0 12px}.teacher-link{font-size:10px}.header-utility{gap:7px}.brand{font-size:23px}.play-home{padding:22px 18px 18px}.play-home-copy h1{font-size:42px}.play-home-copy>p{font-size:14px}
 .world-card{padding:14px;min-height:239px}.world-card h3{font-size:19px}.world-card .course-thumb{width:55px;height:55px;right:6px}.world-card .course-thumb svg{width:52px;height:52px}.world-bottom{font-size:10px}
 .depth-number input[type=number]{width:53px}.depth-control select{font-size:11px;padding:10px 6px}.depth-steps button{font-size:10px;gap:4px}
}
@media(prefers-reduced-motion:reduce){
 .primary-button,.secondary-button,.world-card,.mission-tile,.mini-controls>button,.next-mission-strip,.ac-branch,.quiz-option,.guide-row{transition:none}
 .world-card:hover,.mission-tile:hover{transform:none}
}
@media print{
 body{background:#fff;color:#000}.site-header,.context-bar,.footer{display:none!important}
 main{padding:0}.panel,.depth-bench,.family-paper,.ac-conclusion,.ac-phase-card{box-shadow:none;border-color:#bbb;border-radius:0}
 .reader-section p{color:#000}.code-block{background:#eee;color:#000}.code-block-head{background:#eee;color:#000}
}

/* One visible brief beside one working area; keep the existing Robolab theme. */
.lesson-workspace{display:grid;grid-template-columns:minmax(280px,.8fr) minmax(0,1.55fr);align-items:start;gap:22px;margin:20px 0 28px;padding:0;border:0;background:transparent;box-shadow:none}
.lesson-assignment{position:sticky;top:110px;min-width:0;padding:27px;background:#eaf1fd;border:1px solid #dde7f5;border-radius:var(--radius-lg)}
.lesson-assignment-top{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px;margin-bottom:20px}
.lesson-task-label{color:var(--blue);font-size:13px;line-height:1.5;font-weight:700;letter-spacing:.06em}
.lesson-task-context{font-size:12px;line-height:1.5;color:var(--muted)}
.lesson-assignment h2{font-size:32px;font-weight:700;line-height:1.28;letter-spacing:-.8px;margin:0}
.lesson-task-help{border-top:1px solid #d2dff0;padding-top:19px;margin-top:25px}
.lesson-task-help>summary{font-size:13px;font-weight:600;cursor:pointer}
.lesson-task-help p{font-size:14px;line-height:1.7;margin:7px 0 0;color:#566a86}
.lesson-assignment>.lesson-answer-note{font-size:15px;line-height:1.7;margin:15px 0 0}
.lesson-work-area{min-width:0;padding:26px;border:1px solid #e3eaf3;border-radius:var(--radius-lg);background:var(--white);box-shadow:var(--shadow-card)}
.lesson-work-heading,.lesson-work-area h3.lesson-work-heading{font-size:20px;font-weight:600;line-height:1.4;letter-spacing:-.3px;margin:0 0 13px}
.lesson-answer-note{font-size:14px;line-height:1.65;color:var(--muted);margin:0 0 20px}
.lesson-task-tabs{margin-top:24px;gap:8px;flex-wrap:wrap}
.lesson-task-tabs button{width:auto;min-height:43px;height:auto;padding:10px 13px;font-size:12px;border-radius:12px}
.lesson-workspace .depth-bench{display:flex;flex-direction:column;border:0;border-radius:0;box-shadow:none;background:transparent;overflow:visible}
.lesson-workspace .depth-console{display:flex;flex-direction:column;padding:0;background:transparent;border:0;gap:0;justify-content:flex-start;order:initial}
.lesson-workspace .depth-settings{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 18px;margin:0 0 22px}
.lesson-workspace .depth-control{font-size:13px}
.lesson-workspace .depth-control>span{font-size:13px;color:var(--ink)}
.lesson-workspace .depth-number input[type=number]{font-size:16px;min-height:46px;width:74px}
.lesson-workspace .depth-control select{font-size:14px;min-height:46px}
.lesson-workspace .depth-console .primary-button{width:100%;margin:0;min-height:48px}
.lesson-workspace .depth-console #depth-change-state{font-size:12px!important;margin:11px 0 0}
.lesson-workspace .depth-visual{display:block;padding:22px 0 0;margin-top:23px;border-top:1px solid var(--line);order:initial}
.lesson-workspace .depth-visual #depth-scene{padding:0}
.lesson-workspace .depth-scene{max-height:230px}
.lesson-workspace .depth-caption{margin:10px 0 0}
.lesson-workspace [data-action="rover-replay"]:disabled{display:none}
.lesson-workspace .depth-feedback{margin-top:20px}
.lesson-workspace .depth-verdict{grid-template-columns:repeat(2,minmax(0,1fr))}
.lesson-extra{border:0;border-top:1px solid var(--line);padding:15px 0 0;margin:20px 0 0;font-size:13px;line-height:1.7}
.lesson-extra>summary{font-size:13px;line-height:1.5;font-weight:500;color:var(--muted);cursor:pointer}
.lesson-extra .depth-metrics{grid-template-columns:repeat(3,minmax(0,1fr))}
.lesson-workspace .depth-next{display:flex;flex-direction:row;flex-wrap:wrap;margin:20px 0 0;gap:12px}
.lesson-workspace .depth-next p{margin:0;flex:1 1 200px}
.lesson-workspace .depth-next .primary-button{background:#eef3fb;color:var(--blue);border:1px solid #d4dfef;box-shadow:none;font-size:12px}
.lesson-workspace .depth-reading{margin:20px 0 0;padding:15px 0;border:0;border-top:1px solid var(--line);border-radius:0;box-shadow:none}
.lesson-workspace .depth-question .lesson-work-heading{font-size:20px;margin:0 0 15px}
.lesson-workspace .depth-question>h3:not(.lesson-work-heading){font-size:16px;margin:20px 0 14px}
.lesson-workspace .depth-question .primary-button{margin-top:20px}
.lesson-trace-example{margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}
.lesson-workspace .depth-transfer-grid{margin:0}
.lesson-workspace #depth-transfer-form{padding:0;margin-top:16px;border:0;border-radius:0;box-shadow:none;background:transparent}
.lesson-workspace #depth-transfer-form label{font-size:16px}
.lesson-workspace #depth-transfer-form input,.lesson-workspace #depth-transfer-form select{font-size:16px;min-height:48px}
.lesson-workspace #depth-transfer-form .secondary-button{background:var(--blue);border-color:transparent;color:white;min-height:48px}
.lesson-workspace #depth-transfer-form>.primary-button{background:#eef3fb;color:var(--blue);border-color:#d4dfef;box-shadow:none}
.lesson-workspace.depth-practice p,.lesson-workspace.depth-practice li{font-size:14px;line-height:1.7}
.lesson-workspace.depth-practice .lesson-work-area>.lesson-extra{margin-top:25px}
.lesson-workspace.depth-practice .lesson-work-area>div>.primary-button{margin-top:8px}
.lesson-page-heading{display:grid;grid-template-columns:minmax(200px,.7fr) minmax(0,2fr);column-gap:22px;row-gap:8px;padding-bottom:18px;margin-bottom:20px}
.lesson-page-heading>.eyebrow{grid-column:1;grid-row:1;font-size:10px}
.lesson-page-heading>h1{grid-column:1;grid-row:2;font-size:25px;font-weight:600;line-height:1.25;letter-spacing:-.6px;margin:0}
.lesson-page-heading>.depth-steps{grid-column:2;grid-row:1/3;align-self:center}
.lesson-program-workspace .mission-bench{display:flex;flex-direction:column;gap:18px}
.lesson-program-workspace .program-panel{position:static;width:100%;min-height:0;border:0;border-radius:0;box-shadow:none;overflow:visible}
.lesson-program-workspace .program-panel>.panel-head{padding:0 0 14px;background:transparent}
.lesson-program-workspace .panel-title{font-size:18px}
.lesson-program-workspace .program-panel>.lesson-answer-note{margin:14px 0 16px}
.lesson-program-workspace .program-panel>.mode-tabs{margin:0 0 14px}
.lesson-program-workspace .program-editor{padding:18px 12px;min-height:190px}
.lesson-program-workspace .simulation-controls{display:flex;flex-wrap:wrap;gap:9px;padding:15px 0;margin:0;border-radius:0}
.lesson-program-workspace .simulation-controls>.run-button{flex:1;min-width:0;justify-content:center}
.lesson-program-workspace .track-panel{width:100%;border:1px solid var(--line);border-radius:17px;box-shadow:none;overflow:hidden}
.lesson-program-workspace .track-panel .panel-head{padding:16px}
.lesson-program-workspace .track-panel .panel-title{font-size:14px}
.lesson-program-workspace .track-stage{height:270px;min-height:0;aspect-ratio:auto}
.lesson-program-workspace .mission-components{width:100%;margin:0;border:0;border-bottom:1px solid var(--line);border-radius:0;padding:0}
.lesson-program-workspace .mission-components>summary{font-size:14px;padding:0 0 16px}
.lesson-program-workspace .mission-coach.lesson-work-status{padding:0;margin:0;min-height:0;background:transparent;border:0;color:var(--muted);gap:0}
.lesson-work-status .coach-number{display:none}
.lesson-work-status b{font-size:13px;font-weight:500;line-height:1.5}
.lesson-assignment>.coach-help{font-size:13px;min-height:43px;border:1px solid #cbd9ec;border-radius:11px;background:white;color:var(--blue);padding:10px 13px;margin:20px 0 0;width:fit-content}
.lesson-assignment>.coach-help .icon{width:17px;height:17px}
.lesson-program-workspace .ac-field-meta{margin:0;border:0;padding:10px 0 0;gap:10px}
.lesson-program-workspace .lesson-program-next{margin:0}
.lesson-program-workspace .depth-live-inspector{margin:0}
@media(max-width:1100px){
 .lesson-workspace{grid-template-columns:minmax(250px,.8fr) minmax(0,1.45fr);gap:18px}
 .lesson-assignment{padding:23px}
 .lesson-assignment h2{font-size:29px}
 .lesson-work-area{padding:23px}
 .lesson-page-heading{grid-template-columns:minmax(185px,.65fr) minmax(0,2fr)}
 .lesson-page-heading .depth-steps button{font-size:11px;padding:10px 7px;gap:5px}
}
@media(max-width:820px){
 .lesson-workspace{grid-template-columns:1fr;gap:16px}
 .lesson-assignment{position:static}
 .lesson-assignment h2{font-size:30px}
 .lesson-assignment-top{margin-bottom:13px}
 .lesson-task-help{margin-top:18px;padding-top:14px}
 .lesson-task-tabs{margin-top:17px}
 .lesson-page-heading{grid-template-columns:1fr;row-gap:10px}
 .lesson-page-heading>.eyebrow,.lesson-page-heading>h1,.lesson-page-heading>.depth-steps{grid-column:1;grid-row:auto}
 .lesson-page-heading>.depth-steps{margin-top:6px}
 .lesson-page-heading>.depth-steps{grid-template-columns:repeat(6,minmax(0,1fr))}
}
@media(max-width:640px){
 .lesson-workspace{margin:15px 0 22px}
 .lesson-assignment{padding:22px 20px;border-radius:20px}
 .lesson-assignment h2{font-size:28px;line-height:1.3}
 .lesson-task-label{font-size:12px}
 .lesson-task-help p{font-size:13px;line-height:1.7}
 .lesson-work-area{padding:21px 18px;border-radius:20px}
 .lesson-workspace .depth-settings{gap:17px 13px}
 .lesson-workspace .depth-control>span{font-size:12px}
 .lesson-workspace .depth-number{gap:7px}
 .lesson-workspace .depth-number input[type=number]{width:63px;padding:10px 7px}
 .lesson-workspace .depth-control select{font-size:13px;padding:10px 8px}
 .lesson-workspace .depth-visual{padding-top:19px;margin-top:21px}
 .lesson-workspace .depth-visual #depth-scene{padding:0;order:initial}
 .lesson-workspace .depth-verdict{grid-template-columns:1fr}
 .lesson-extra .depth-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
 .lesson-workspace .depth-next{align-items:stretch}
 .lesson-workspace .depth-next .primary-button{width:100%;justify-content:center}
 .lesson-page-heading{padding-bottom:16px;margin-bottom:16px}
 .lesson-page-heading>h1{font-size:23px}
 .lesson-page-heading>.depth-steps{grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}
 .lesson-program-workspace .program-editor{padding:16px 0}
 .lesson-program-workspace .simulation-controls>.run-button{flex-basis:100%;width:100%;min-height:47px;font-size:13px}
 .lesson-program-workspace .track-stage{height:230px;min-height:0;aspect-ratio:auto}
 .lesson-program-workspace .ac-field-meta{flex-wrap:wrap;gap:10px}
 .lesson-program-workspace .program-panel .python-editor textarea{font-size:13px}
}

/* Email access follows the existing family cabinet styling. */
.auth-layout{display:grid;grid-template-columns:minmax(0,590px) minmax(0,1fr);gap:24px;align-items:start;margin:26px 0}
.auth-card{max-width:630px;width:100%}
.auth-card h2{font-size:25px;margin:0 0 23px}
.auth-card form{display:flex;flex-direction:column;gap:19px}
.auth-field{display:flex;flex-direction:column;gap:9px;font-size:14px;font-weight:500}
.auth-field input{width:100%;min-width:0;border:1px solid #ccd8e8;border-radius:12px;background:#fafcff;padding:13px 14px;font:16px/1.5 var(--font);color:var(--ink);min-height:50px}
.auth-password{display:flex;align-items:stretch;border:1px solid #ccd8e8;background:#fafcff;border-radius:12px}
.auth-password input{border:0;background:transparent;flex:1;border-radius:12px}
.auth-password button{padding:0 12px;font-size:12px;color:var(--blue);border-radius:0 12px 12px 0;flex-shrink:0;min-height:48px}
.auth-check{display:flex;gap:9px;align-items:center;font-size:13px;line-height:1.6;color:var(--muted);font-weight:400}
.auth-check input{accent-color:var(--blue);width:17px;height:17px;flex-shrink:0}
.auth-card .primary-button{justify-content:center;min-height:49px;width:100%;font-size:14px}
.auth-card .family-form-error{margin:0}
.auth-card .family-form-error:empty{display:none}
.auth-card [data-auth-success]{font-size:14px;line-height:1.7;color:#385e3a;margin:0}
.auth-links{display:flex;justify-content:space-between;flex-wrap:wrap;gap:13px;margin-top:23px}
.auth-links a,.auth-bottom a{font-size:13px;color:var(--blue);text-decoration:none}
.auth-links a:hover,.auth-bottom a:hover{text-decoration:underline}
.auth-bottom{font-size:13px;margin:23px 0 0;line-height:1.6}
.auth-aside h2{font-size:27px;line-height:1.3;margin:0 0 20px}
.auth-aside p{font-size:15px;line-height:1.75}
.auth-password-hint{font-size:12px;line-height:1.6;color:var(--muted);margin:-10px 0 0}
.auth-notice{font-size:13px;line-height:1.65;padding:14px 16px;border-radius:12px;background:#fff2e9;color:#84523d;margin:0 0 20px}
.auth-card [hidden]{display:none!important}
.auth-login-link{font:600 13px var(--font);background:#eaf1fd;color:var(--blue);border-radius:11px;padding:10px 15px;min-height:40px;width:auto;height:auto}
.auth-email-status{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;margin-bottom:24px;padding:22px 26px}
.auth-email-status b{font-size:14px;overflow-wrap:anywhere}
.auth-email-status p{font-size:13px;line-height:1.6;margin:7px 0 0}
@media(max-width:900px){.auth-layout{grid-template-columns:1fr}.auth-card{max-width:none}.auth-aside{max-width:none}}
@media(max-width:640px){.auth-layout{gap:17px;margin:18px 0}.auth-card{padding:25px 20px}.auth-field{font-size:13px}.auth-card form{gap:18px}.auth-password button{padding:0 10px;font-size:11px}.auth-aside h2{font-size:24px}.auth-aside p{font-size:14px}.auth-login-link{padding:9px 11px;font-size:12px;min-height:40px}.auth-email-status{padding:20px}}

.family-mode-nav{display:flex;flex-wrap:wrap;gap:7px;padding:6px;background:#eaf0f9;border:1px solid var(--line);border-radius:15px;width:fit-content;margin:20px 0 25px}
.family-mode-nav a{display:block;padding:11px 20px;font-size:14px;font-weight:600;color:var(--muted);text-decoration:none;border-radius:11px}
.family-mode-nav a.active{background:white;color:var(--blue);box-shadow:0 2px 8px #263d6520}
.family-mode-nav a:hover{color:var(--blue)}
@media(max-width:640px){.family-mode-nav{width:100%;gap:4px}.family-mode-nav a{flex:1;text-align:center;padding:10px 9px;font-size:13px}}

.auth-change-password form{display:flex;flex-direction:column;gap:19px;max-width:570px;padding-top:15px}
.auth-change-password form .secondary-button{align-self:start}
.auth-change-password [data-auth-success]{color:#385e3a;font-size:14px;line-height:1.6}
.auth-change-password [data-auth-success]:empty,.auth-change-password [data-auth-error]:empty{display:none}
.family-price-period{display:inline!important;font-size:15px!important;color:var(--muted)}

.family-auto-save{max-width:850px;margin:26px 0}.family-auto-save h2{font-size:24px}.family-auto-save p{font-size:15px;line-height:1.75}