:root{--ink:#193E56;--muted:rgba(25, 62, 86, 0.72);--paper:rgba(25, 62, 86, 0.055);--white:#fff;--green:#193E56;--green-dark:#193E56;--mint:rgba(25, 62, 86, 0.055);--line:rgba(25, 62, 86, 0.2);--gold:#F3A546;--radius:20px;--shadow:0 10px 35px #193E56;--font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--paper);font-family:var(--font);color:var(--ink);font-size:14px;line-height:1.65}button,input,textarea,select{font:inherit}button{cursor:pointer;border:0;background:none;color:inherit}button:disabled{cursor:wait;opacity:.6}input,textarea,select{color:var(--ink);background:#fff;border:1px solid rgba(25, 62, 86, 0.22);border-radius:10px;padding:10px 12px;max-width:100%;outline:none}input:focus,textarea:focus,select:focus{border-color:rgba(25, 62, 86, 0.22);box-shadow:0 0 0 3px rgba(25, 62, 86, 0.1)}textarea{resize:vertical}button:focus-visible,a:focus-visible{outline:3px solid rgba(25, 62, 86, 0.22);outline-offset:3px}a{color:var(--accent)}h1,h2,h3,h4,p{margin:0}h1{font-size:30px;line-height:1.45;letter-spacing:-.6px}h2{font-size:20px;line-height:1.5}h3{font-size:16px}h4{font-size:14px}small{font-size:12px}pre,code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace}pre{white-space:pre-wrap;word-break:break-word}svg{flex-shrink:0;vertical-align:middle}.muted{color:var(--muted)}.green{color:var(--accent)}.small{font-size:12px}.bold{font-weight:650}.hidden{display:none!important}.full{width:100%}.grow{flex:1}.row{display:flex;align-items:center;gap:12px}.between{display:flex;align-items:center;justify-content:space-between;gap:16px}.stack{display:flex;flex-direction:column;gap:16px}.skip-link{position:absolute;left:10px;top:-100px;z-index:2000;background:#fff;padding:10px}.skip-link:focus{top:10px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 18px;border-radius:11px;font-size:13px;font-weight:600;transition:background .15s,transform .15s;white-space:nowrap}.btn:hover{transform:translateY(-1px)}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-strong)}.btn-secondary{background:#fff;border:1px solid rgba(25, 62, 86, 0.22)}.btn-soft{background:var(--mint);color:var(--accent)}.btn-ghost{padding:8px 10px;color:var(--muted)}.btn-danger{background:rgba(25, 62, 86, 0.035);color:#193E56}.btn-sm{padding:7px 11px;font-size:12px;border-radius:8px}.icon-btn{width:32px;height:32px;display:inline-flex;justify-content:center;align-items:center;border-radius:8px}.icon-btn:hover{background:var(--mint)}.tag{display:inline-flex;align-items:center;gap:5px;font-size:11px;color:#193E56;border:1px solid rgba(25, 62, 86, 0.22);border-radius:7px;padding:3px 8px;background:#fff}.tag-green{background:rgba(25, 62, 86, 0.035);border-color:rgba(25, 62, 86, 0.22);color:#193E56}.tag-gold{background:rgba(25, 62, 86, 0.075);border-color:rgba(25, 62, 86, 0.22);color:#193E56}.eyebrow{font-size:10px;letter-spacing:2px;font-weight:700;color:#193E56}.pill{border-radius:100px;background:#fff;padding:6px 11px;display:inline-flex;align-items:center;gap:6px;font-size:12px}.divider{height:1px;background:var(--line);margin:20px 0}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.card-pad{padding:24px}.notice{display:flex;align-items:flex-start;gap:9px;padding:12px 15px;border-radius:10px;background:rgba(25, 62, 86, 0.035);color:#193E56;font-size:12px}.notice.warning{background:rgba(25, 62, 86, 0.075);color:#193E56}.notice.success{background:rgba(25, 62, 86, 0.035);color:#193E56}.notice.error{background:rgba(25, 62, 86, 0.075);color:#193E56}.notice svg{margin-top:2px}.loading-screen{height:100vh;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:14px}.loading-screen p{color:var(--muted)}.loading-orbit{width:36px;height:36px;border:3px solid rgba(25, 62, 86, 0.22);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}
/* Application chrome */
.sidebar{position:fixed;inset:0 auto 0 0;width:228px;background:#fff;border-right:1px solid var(--line);z-index:30;display:flex;flex-direction:column;padding:30px 21px 20px}.brand{display:flex;gap:11px;align-items:center;margin:0 0 42px 5px;cursor:pointer}.brand-symbol{width:40px;height:40px;flex-shrink:0;background:var(--accent);border-radius:13px;display:grid;place-items:center;color:#fff}.brand-name{font-weight:750;letter-spacing:1px;font-size:20px;line-height:1.3}.brand-sub{font-size:8px;letter-spacing:1.9px;color:#193E56;margin-top:4px}.nav-label{font-size:10px;color:#193E56;letter-spacing:1.4px;margin:0 14px 10px}.nav-item{display:flex;align-items:center;gap:13px;width:100%;padding:13px 15px;border-radius:11px;margin-bottom:7px;color:#193E56;text-align:left;font-size:13px}.nav-item:hover{background:rgba(25, 62, 86, 0.035)}.nav-item.active{background:rgba(25, 62, 86, 0.035);color:var(--accent);font-weight:650}.nav-item.active:after{content:'';width:5px;height:5px;background:var(--accent);border-radius:50%;margin-left:auto}.side-bottom{margin-top:auto}.side-thought{margin:22px 2px;padding:18px 15px;background:rgba(25, 62, 86, 0.035);border:1px solid rgba(25, 62, 86, 0.22);border-radius:14px}.side-thought .icon{margin-bottom:8px;color:#193E56}.side-thought strong{font-size:12px;display:block}.side-thought p{font-size:11px;color:#193E56;margin-top:5px;line-height:1.7}.profile{display:flex;gap:10px;align-items:center;border-top:1px solid var(--line);padding-top:18px}.avatar{width:34px;height:34px;flex-shrink:0;background:rgba(25, 62, 86, 0.035);border-radius:12px;display:grid;place-items:center;color:#193E56;font-size:14px;font-weight:650}.profile-name{font-size:12px;font-weight:600;max-width:115px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.profile-label{color:#193E56;font-size:10px}.main-shell{margin-left:228px;min-height:100vh}.topbar{height:76px;padding:0 38px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(25, 62, 86, 0.22);background:rgba(25, 62, 86, 0.035)}.breadcrumbs{display:flex;align-items:center;gap:12px;color:#193E56;font-size:11px}.breadcrumbs strong{font-weight:500;color:#193E56}.top-actions{display:flex;gap:16px;align-items:center;color:#193E56;font-size:11px}.xp-pill{background:rgba(25, 62, 86, 0.075);color:#193E56;border:1px solid rgba(25, 62, 86, 0.22);border-radius:30px;padding:5px 12px;display:flex;gap:6px;align-items:center;font-weight:600}.main-content{max-width:1460px;margin:auto;padding:30px 38px 44px}.footer-note{text-align:center;color:#193E56;font-size:10px;margin:28px 0 0;letter-spacing:.4px}.page-heading{margin-bottom:26px}.page-heading p{margin-top:7px;color:var(--muted);font-size:13px}.page-heading .eyebrow{margin-bottom:9px}
/* Exploration map */
.welcome{display:grid;grid-template-columns:1fr 320px;align-items:center;min-height:186px;margin-bottom:22px;position:relative}.welcome h1{margin-top:10px;font-size:31px}.welcome h1 span{color:var(--accent)}.welcome p{margin-top:12px;color:#193E56;font-size:13px}.welcome-mini{display:flex;align-items:center;gap:12px;margin-top:20px;font-size:11px;color:#193E56}.mini-dots{display:flex;gap:3px}.mini-dots i{display:block;width:5px;height:5px;background:rgba(25, 62, 86, 0.12);border-radius:50%}.mini-dots i:first-child{background:var(--accent)}.hero-art{position:relative;width:100%;height:192px;overflow:hidden}.hero-art .island-art{height:197px;width:244px;position:absolute;right:13px;top:-5px;filter:drop-shadow(0 10px 10px rgba(25, 62, 86, 0.1))}.hero-code{position:absolute;left:3px;top:24px;transform:rotate(-6deg);background:#fff;border:1px solid rgba(25, 62, 86, 0.22);box-shadow:0 6px 15px rgba(25, 62, 86, 0.1);border-radius:10px;padding:8px 11px;font:11px ui-monospace,monospace;color:#193E56}.hero-tag{position:absolute;bottom:20px;right:7px;background:#fff;border:1px solid rgba(25, 62, 86, 0.22);padding:7px 13px;border-radius:100px;color:#193E56;font-size:10px;transform:rotate(-5deg);box-shadow:0 5px 16px rgba(25, 62, 86, 0.1)}.hero-orbit{position:absolute;width:210px;height:130px;border:1px dashed rgba(25, 62, 86, 0.22);transform:rotate(-20deg);border-radius:50%;right:36px;top:22px}.overview-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden;margin-bottom:26px}.overview-stat{display:flex;align-items:center;gap:13px;padding:15px 23px;background:#fff}.stat-icon{height:37px;width:37px;border-radius:12px;background:rgba(25, 62, 86, 0.035);color:#193E56;display:grid;place-items:center}.overview-stat:nth-child(2) .stat-icon{background:rgba(25, 62, 86, 0.075);color:#193E56}.overview-stat:nth-child(3) .stat-icon{background:rgba(25, 62, 86, 0.035);color:#193E56}.stat-label{font-size:10px;color:#193E56}.stat-number{font-size:18px;font-weight:700;line-height:1.3}.stat-number small{font-size:11px;color:#193E56;margin-left:3px;font-weight:400}.world-tabs{display:grid;grid-template-columns:repeat(3,1fr);background:rgba(25, 62, 86, 0.035);padding:5px;border-radius:13px;margin-bottom:24px;gap:5px}.world-tab{border-radius:9px;padding:12px 16px;display:flex;align-items:center;gap:10px;color:#193E56;font-size:13px;text-align:left;transition:background .15s}.world-tab.active{background:#fff;color:var(--accent);box-shadow:0 2px 8px rgba(25, 62, 86, 0.1)}.world-num{height:22px;width:22px;display:grid;place-items:center;border:1px solid rgba(25, 62, 86, 0.22);border-radius:7px;font-size:10px;font-weight:700}.world-tab.active .world-num{background:rgba(25, 62, 86, 0.035);border-color:rgba(25, 62, 86, 0.22)}.world-tab span:last-child{font-size:10px;margin-left:auto;color:#193E56}.map-layout{display:grid;grid-template-columns:minmax(0,1fr) 276px;gap:20px}.map-card{position:relative;overflow:hidden;background:rgba(25, 62, 86, 0.035)}.map-header{padding:23px 25px 0}.map-header h2{font-size:17px}.map-header small{font-size:10px;color:#193E56}.map-surface{height:289px;position:relative;margin:0 10px;background-image:radial-gradient(rgba(25, 62, 86, 0.035) .7px,transparent .7px);background-size:18px 18px;background-position:0 8px}.map-route{position:absolute;left:0;top:8px;width:100%;height:225px;pointer-events:none}.island-node{position:absolute;width:132px;padding:0;transform:translateX(-50%);text-align:center;border-radius:15px;transition:transform .2s}.island-node:hover{transform:translateX(-50%) translateY(-5px)}.island-node .island-art{width:128px;height:112px;display:block;margin:auto}.island-node .island-label{font-size:12px;font-weight:650;margin-top:-3px;color:#193E56}.island-node small{font-size:9px;color:#193E56}.node-number{position:absolute;top:77px;left:55px;width:23px;height:23px;background:#fff;border:2px solid rgba(25, 62, 86, 0.22);border-radius:50%;font-size:9px;display:grid;place-items:center;color:#193E56}.island-node.selected .node-number{background:var(--accent);border-color:#fff;color:#fff;box-shadow:0 0 0 3px rgba(25, 62, 86, 0.32)}.island-node.selected .island-label{color:var(--accent)}.island-node.locked .island-art{opacity:.58;filter:saturate(.6)}.map-caption{position:absolute;left:21px;bottom:14px;display:flex;align-items:center;gap:7px;color:#193E56;font-size:9px}.map-caption .dot{width:5px;height:5px;border-radius:50%;background:rgba(25, 62, 86, 0.16)}.map-note{padding:12px 24px 18px;display:flex;align-items:center;justify-content:space-between;border-top:1px solid rgba(25, 62, 86, 0.22);margin-top:2px;font-size:10px;color:#193E56}.next-card{padding:23px;background:#fff;display:flex;flex-direction:column}.next-eyebrow{display:flex;align-items:center;gap:7px;font-size:10px;color:#193E56;letter-spacing:1px}.next-chapter{font-size:11px;margin-top:18px;color:#193E56}.next-card h3{font-size:20px;margin:4px 0 8px;line-height:1.5}.next-desc{font-size:11px;color:#193E56;line-height:1.9;min-height:46px}.next-tags{display:flex;gap:6px;margin-top:14px}.next-card .btn{margin-top:20px;font-size:12px}.progress-line{height:5px;background:rgba(25, 62, 86, 0.035);border-radius:20px;overflow:hidden}.progress-fill{height:100%;background:rgba(25, 62, 86, 0.88);border-radius:20px}.next-progress{margin-top:auto;padding-top:18px}.next-progress .between{font-size:9px;color:#193E56;margin-bottom:7px}.section-heading{display:flex;justify-content:space-between;align-items:center;margin:27px 0 15px}.section-heading h2{font-size:17px}.section-heading small{font-size:10px;color:#193E56}.project-promos{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.promo{display:grid;grid-template-columns:1fr 90px;align-items:center;padding:19px 18px;text-align:left;transition:transform .2s}.promo:hover{transform:translateY(-3px)}.promo h3{font-size:13px;margin-bottom:5px}.promo p{font-size:10px;color:#193E56;max-width:170px}.promo small{display:flex;align-items:center;gap:5px;font-size:9px;color:#193E56;margin-top:12px}.promo .island-art{height:84px;width:93px}.lesson-list{display:flex;flex-direction:column;gap:9px;margin-top:20px}.lesson-list-item{display:flex;align-items:center;gap:12px;padding:13px 14px;border-radius:12px;border:1px solid var(--line);background:#fff;text-align:left;transition:background .1s}.lesson-list-item:hover{background:rgba(25, 62, 86, 0.035)}.lesson-number{background:rgba(25, 62, 86, 0.035);border-radius:9px;min-width:33px;height:33px;display:grid;place-items:center;font-size:12px;color:#193E56}.lesson-list-title{font-size:13px;font-weight:600}.lesson-list-meta{font-size:10px;color:var(--muted)}.lesson-list-item.locked{background:#fff;color:#193E56}.lesson-list-item.locked .lesson-number{background:rgba(25, 62, 86, 0.035);color:#193E56}
/* Missions */
.lesson-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:21px}.lesson-heading h1{font-size:26px;margin-top:4px}.lesson-heading .row{gap:7px;margin-top:8px}.lesson-progress{display:flex;gap:7px;margin-right:5px}.lesson-progress i{display:block;width:23px;height:5px;background:rgba(25, 62, 86, 0.035);border-radius:8px}.lesson-progress i.done{background:rgba(25, 62, 86, 0.16)}.lesson-progress i.current{background:var(--accent)}.lesson-layout{display:grid;grid-template-columns:305px minmax(0,1fr);gap:21px;align-items:start}.mission-panel{padding:24px}.mission-panel .eyebrow{margin-bottom:13px}.mission-goal{font-size:14px;font-weight:600;line-height:1.9}.mission-explain{font-size:12px;color:#193E56;line-height:1.95;margin-top:15px}.quiz{margin-top:24px;padding-top:22px;border-top:1px solid var(--line)}.quiz h4{display:flex;align-items:center;gap:8px;font-size:13px;margin-bottom:12px}.quiz-question{font-size:12px;margin-bottom:10px;font-weight:500}.radio-card{display:flex;align-items:flex-start;gap:8px;border:1px solid rgba(25, 62, 86, 0.22);border-radius:9px;padding:9px 10px;font-size:11px;margin-bottom:7px;cursor:pointer}.radio-card:has(input:checked){border-color:rgba(25, 62, 86, 0.22);background:rgba(25, 62, 86, 0.035)}.radio-card input{margin:4px 0 0;accent-color:var(--accent);box-shadow:none}.hint-box{background:rgba(25, 62, 86, 0.035);border:1px solid rgba(25, 62, 86, 0.22);border-radius:11px;margin-top:18px;padding:12px;font-size:11px;color:#193E56}.hint-box button{display:flex;align-items:center;gap:7px;width:100%;font-size:11px;text-align:left}.hint-text{padding-top:9px;line-height:1.8}.concept-caption{font-size:10px;color:#193E56;margin-top:14px;text-align:center}.lab-card{overflow:hidden}.lab-toolbar{display:flex;align-items:center;justify-content:space-between;padding:12px 17px;border-bottom:1px solid var(--line);background:#fff;gap:8px}.lab-filename{display:flex;gap:8px;align-items:center;font-size:11px;color:#193E56}.lab-filename span{font-family:ui-monospace,monospace}.lab-status{font-size:9px;color:#193E56;display:flex;align-items:center;gap:5px}.lab-status:before{content:'';height:5px;width:5px;background:rgba(25, 62, 86, 0.16);border-radius:50%}.lab-body{padding:20px;min-height:345px}.lab-actions{padding:14px 18px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:10px;background:#fff}.lab-actions .btn{font-size:12px}.lab-actions .muted{font-size:9px}.output-panel{margin-top:18px;border:1px solid var(--line);border-radius:13px;background:#fff;overflow:hidden}.output-title{background:rgba(25, 62, 86, 0.035);border-bottom:1px solid var(--line);padding:11px 16px;font-size:11px;display:flex;align-items:center;gap:8px;color:#193E56}.output-content{padding:14px 17px;font-size:12px}.output-content pre{font-size:11px;color:#193E56;background:rgba(25, 62, 86, 0.035);padding:12px;border-radius:8px;margin:9px 0 0;max-height:180px;overflow:auto}.check-row{display:flex;align-items:flex-start;gap:8px;font-size:11px;margin:7px 0;color:#193E56}.check-row.pass{color:#193E56}.check-row.fail{color:#193E56}.check-row small{font-size:10px;display:block;color:#193E56;margin-top:3px}.empty-output{color:#193E56;display:flex;align-items:center;gap:9px;padding:7px 0}.reflection{margin-top:19px;padding:21px}.reflection h3{font-size:14px;display:flex;gap:8px;align-items:center}.reflection p{font-size:11px;color:#193E56;margin:7px 0 13px}.reflection textarea{font-size:12px;min-height:83px;width:100%;background:#fff}.reflection .between{margin-top:13px}.reflection small{font-size:10px;color:#193E56}.runtime-note{font-size:10px;line-height:1.8;color:#193E56;margin-top:12px;padding:0 3px}.preview-banner{margin-bottom:20px}.CodeMirror{height:330px!important;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:13px;line-height:1.8;background:#fff;color:#193E56}.CodeMirror-gutters{background:rgba(25, 62, 86, 0.035);border-right:1px solid rgba(25, 62, 86, 0.22)}.CodeMirror-linenumber{color:#193E56;padding:0 12px 0 8px}.CodeMirror-cursor{border-color:rgba(25, 62, 86, 0.22)}.CodeMirror-selected{background:rgba(25, 62, 86, 0.075)!important}.CodeMirror .cm-keyword{color:#193E56}.CodeMirror .cm-number{color:#193E56}.CodeMirror .cm-string{color:#193E56}.CodeMirror .cm-comment{color:#193E56}.CodeMirror .cm-def{color:#193E56}.CodeMirror .cm-variable{color:#193E56}.editor-wrap{border:1px solid rgba(25, 62, 86, 0.22);border-radius:10px;overflow:hidden}.stdin-box{margin-top:12px;display:grid;grid-template-columns:1fr 1fr;gap:12px}.stdin-box label{display:block;font-size:10px;color:#193E56}.stdin-box textarea,.sample-output{margin-top:5px;min-height:55px;width:100%;font-size:11px;font-family:ui-monospace,monospace;border-radius:8px;background:rgba(25, 62, 86, 0.035);padding:9px}.sample-output{border:1px solid var(--line);white-space:pre-wrap}.sql-schema{font-size:11px;color:#193E56;line-height:1.9;margin-bottom:12px;padding:10px 13px;background:rgba(25, 62, 86, 0.035);border:1px solid rgba(25, 62, 86, 0.22);border-radius:10px}.grid-lab{display:grid;grid-template-columns:minmax(180px,1.05fr) minmax(145px,.85fr);gap:18px}.game-grid{display:grid;aspect-ratio:1;grid-template-columns:repeat(6,1fr);gap:4px;background:rgba(25, 62, 86, 0.035);border:8px solid rgba(25, 62, 86, 0.22);border-radius:14px;box-shadow:inset 0 0 0 1px rgba(25, 62, 86, 0.32);max-width:380px;margin:auto;width:100%}.grid-cell{background:rgba(25, 62, 86, 0.035);border-radius:5px;position:relative;display:grid;place-items:center;min-width:0;aspect-ratio:1}.grid-cell.wall{background:rgba(25, 62, 86, 0.12);box-shadow:0 3px 0 rgba(25, 62, 86, 0.32)}.grid-cell.wall:before{content:'';display:block;width:65%;height:30%;border:1px solid rgba(25, 62, 86, 0.22);transform:skewY(-12deg);border-radius:3px}.grid-cell.target{background:rgba(243, 165, 70, 0.12);color:#193E56}.grid-cell.star{color:#193E56}.grid-cell.visited{background:rgba(25, 62, 86, 0.12)}.player{position:absolute;width:74%;height:74%;border-radius:50%;background:#193E56;color:#fff;display:grid;place-items:center;box-shadow:0 0 0 3px #fff,0 0 0 5px rgba(25, 62, 86, 0.32),0 2px 6px rgba(25, 62, 86, 0.32);z-index:2;transition:transform .16s ease}.player-arrow{font:900 clamp(18px,3.5vw,26px)/1 Arial,sans-serif;transform:translateX(1px);text-shadow:0 1px 2px rgba(25, 62, 86, 0.32)}.grid-direction{display:flex;align-items:center;justify-content:center;gap:9px;margin:0 auto 10px;color:#193E56;font-size:14px}.direction-mark{display:inline-grid;place-items:center;width:32px;height:32px;border:2px solid #fff;border-radius:50%;background:#193E56;color:#fff;font:900 19px/1 Arial,sans-serif;box-shadow:0 0 0 2px rgba(25, 62, 86, 0.32);transition:transform .16s ease}.forward-mark,.turn-mark{font-family:Arial,sans-serif;font-size:16px;font-weight:800;line-height:1}.grid-legend{display:flex;justify-content:center;gap:13px;color:#193E56;font-size:9px;margin-top:11px}.block-builder h4{font-size:11px;color:#193E56;margin-bottom:9px}.block-palette{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}.block-add{font-size:10px;border:1px solid rgba(25, 62, 86, 0.22);background:rgba(25, 62, 86, 0.035);color:#193E56;border-radius:7px;padding:6px 8px;display:inline-flex;align-items:center;gap:5px}.block-add.turn{background:rgba(25, 62, 86, 0.075);border-color:rgba(25, 62, 86, 0.22);color:#193E56}.block-sequence{border:1px dashed rgba(25, 62, 86, 0.22);background:rgba(25, 62, 86, 0.035);border-radius:10px;min-height:189px;max-height:265px;overflow:auto;padding:9px;display:flex;flex-direction:column;gap:7px}.block-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;color:#193E56;font-size:10px;min-height:140px}.command-block{display:flex;align-items:center;gap:5px;padding:7px 6px;background:rgba(25, 62, 86, 0.075);border:1px solid rgba(25, 62, 86, 0.22);color:#193E56;border-radius:7px;min-height:36px;font-size:11px;box-shadow:0 2px 0 rgba(25, 62, 86, 0.32)}.command-block.turn{background:rgba(25, 62, 86, 0.075);border-color:rgba(25, 62, 86, 0.22);color:#193E56;box-shadow:0 2px 0 rgba(243, 165, 70, 0.32)}.command-block .block-number{font-size:8px;color:#193E56;min-width:13px}.command-block select{font-size:10px;width:43px;padding:2px 3px;border-color:rgba(25, 62, 86, 0.22);border-radius:4px;background:#fff;color:#193E56}.command-block .icon-btn{width:18px;height:21px;border-radius:4px}.block-footer{font-size:9px;color:#193E56;text-align:right;margin-top:9px}.logic-syntax{font-size:9px;color:#193E56;margin-top:12px}.logic-syntax input{margin-top:5px;font-family:ui-monospace,monospace;font-size:11px;width:100%;padding:7px 9px}.data-search{display:flex;gap:8px;margin-bottom:14px}.data-search input{width:100%;font-size:12px}.table-wrap{max-width:100%;overflow:auto;border:1px solid var(--line);border-radius:10px}.data-table{border-collapse:collapse;width:100%;min-width:450px;font-size:11px}.data-table th{background:rgba(25, 62, 86, 0.035);color:#193E56;font-weight:500;font-size:10px;padding:9px 7px;text-align:left;border-bottom:1px solid var(--line)}.data-table td{padding:5px 4px;border-bottom:1px solid rgba(25, 62, 86, 0.22)}.data-table tr:last-child td{border-bottom:0}.data-table input,.data-table select{font-size:10px;padding:5px 5px;border:1px solid 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22px}.bit-btn{width:44px;height:61px;border:1px solid rgba(25, 62, 86, 0.22);background:rgba(25, 62, 86, 0.035);border-radius:10px;font-size:22px;color:#193E56;display:flex;flex-direction:column;align-items:center;justify-content:center}.bit-btn.on{background:rgba(25, 62, 86, 0.075);color:#193E56;border-color:rgba(25, 62, 86, 0.22)}.bit-btn small{font-size:8px;color:#193E56;margin-top:2px}.bit-summary{text-align:center;font-size:16px;color:#193E56}.system-card{background:rgba(25, 62, 86, 0.035);border:1px solid rgba(25, 62, 86, 0.22);border-radius:12px;padding:18px;margin-bottom:18px}.system-card p{font-size:12px;color:#193E56;line-height:1.9}.token-tray{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0}.token-chip{border:1px solid rgba(25, 62, 86, 0.22);background:rgba(25, 62, 86, 0.075);border-radius:9px;padding:10px 14px;color:#193E56;font-size:12px;display:flex;align-items:center;gap:7px}.token-slot{border:1px dashed rgba(25, 62, 86, 0.22);border-radius:10px;min-height:59px;padding:10px;display:flex;flex-wrap:wrap;gap:7px;background:rgba(25, 62, 86, 0.035)}.permission{display:flex;gap:10px;align-items:center;padding:15px;border:1px solid rgba(25, 62, 86, 0.22);border-radius:10px;margin-bottom:9px;font-size:12px;background:#fff}.permission input{accent-color:var(--accent)}.form-field{margin-bottom:18px}.form-field label{display:block;font-size:12px;font-weight:600;margin-bottom:7px}.form-field textarea{width:100%;min-height:110px;font-size:12px;background:#fff}.form-field small{font-size:10px;color:#193E56;display:block;margin-top:5px}.memory-cells{display:grid;grid-template-columns:repeat(8,1fr);gap:5px;margin:10px 0}.memory-cell{border:1px solid rgba(25, 62, 86, 0.22);border-radius:6px;display:flex;flex-direction:column;align-items:center;font:11px ui-monospace,monospace;color:#193E56;padding:6px}.memory-cell small{font-size:8px;color:#193E56}.trace-log{font-size:10px;max-height:140px;overflow:auto;border-top:1px solid var(--line);padding-top:9px;margin-top:9px;font-family:ui-monospace,monospace;color:#193E56}
/* Portfolios and parent views */
.empty-state{text-align:center;padding:65px 30px}.empty-state .empty-illustration{height:110px;display:flex;justify-content:center;margin-bottom:12px}.empty-state .island-art{width:130px;height:110px}.empty-state p{font-size:12px;color:#193E56;margin:9px auto 21px;max-width:400px}.portfolio-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.portfolio-card{overflow:hidden}.portfolio-art{height:144px;display:grid;place-items:center;background:rgba(25, 62, 86, 0.035);position:relative}.portfolio-art .island-art{width:150px;height:130px}.portfolio-art .tag{position:absolute;left:15px;top:13px;font-size:9px}.portfolio-info{padding:18px}.portfolio-info h3{font-size:14px}.portfolio-info p{font-size:11px;color:#193E56;margin:6px 0 15px;min-height:36px}.portfolio-actions{display:flex;gap:6px;flex-wrap:wrap}.filter-row{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:23px}.filter-btn{font-size:11px;color:#193E56;padding:8px 14px;border-radius:9px;border:1px solid transparent}.filter-btn.active{background:#fff;border-color:var(--line);color:var(--accent)}.passport-layout{display:grid;grid-template-columns:350px 1fr;gap:22px}.radar-card{text-align:center;padding:25px}.radar-card h3{font-size:15px}.radar{width:100%;height:280px;margin-top:15px}.radar-foot{font-size:10px;color:#193E56;line-height:1.8}.badge-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:13px;margin-top:22px}.badge{background:#fff;border:1px solid rgba(25, 62, 86, 0.22);border-radius:13px;padding:18px 8px;text-align:center}.badge-circle{width:46px;height:46px;border-radius:15px;background:rgba(25, 62, 86, 0.035);color:#193E56;display:grid;place-items:center;margin:0 auto 10px}.badge.earned .badge-circle{background:rgba(25, 62, 86, 0.075);color:#193E56}.badge p{font-size:10px;color:#193E56}.badge small{font-size:8px;color:#193E56}.stat-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px}.stat-card{padding:20px}.stat-card small{font-size:10px;color:#193E56;display:flex;gap:7px;align-items:center}.stat-card strong{display:block;font-size:28px;margin-top:6px;font-weight:650;color:#193E56}.stat-card p{font-size:9px;color:#193E56}.parent-gate{max-width:560px;margin:35px auto;padding:35px}.gate-icon{height:57px;width:57px;background:rgba(25, 62, 86, 0.035);border-radius:18px;display:grid;place-items:center;color:#193E56;margin-bottom:19px}.parent-gate h2{margin-bottom:9px}.parent-gate p{font-size:12px;color:#193E56;line-height:1.9;margin-bottom:21px}.parent-gate input[type=password],.parent-gate input[type=text]{display:block;width:100%;margin:9px 0 15px}.check-label{display:flex;align-items:flex-start;gap:8px;font-size:11px;color:#193E56;margin:17px 0}.check-label input{margin-top:5px;accent-color:var(--accent)}.parent-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:22px}.review-item{border:1px solid var(--line);border-radius:14px;background:#fff;padding:22px;margin-bottom:15px}.review-item h3{font-size:14px}.review-item .review-reflection{background:rgba(25, 62, 86, 0.035);padding:12px 14px;font-size:12px;margin:13px 0;border-radius:9px;color:#193E56;white-space:pre-wrap}.review-item textarea{width:100%;font-size:12px;min-height:73px;margin:10px 0}.review-item select{font-size:11px;padding:8px}.review-item details{font-size:10px;color:#193E56;margin:10px 0}.review-item summary{cursor:pointer}.review-item pre{max-height:230px;overflow:auto;background:rgba(25, 62, 86, 0.035);padding:12px;border-radius:8px}.parent-settings h3{font-size:13px;margin-bottom:14px}.parent-settings p{font-size:10px;line-height:1.9;color:#193E56}.parent-settings input,.parent-settings select{font-size:11px;width:100%;margin:8px 0}.space-code{font:10px ui-monospace,monospace;background:rgba(25, 62, 86, 0.035);padding:8px;border-radius:6px;word-break:break-all;margin:10px 0}.settings-section{padding:19px;border-bottom:1px solid var(--line)}.settings-section:last-child{border-bottom:0}.review-status{font-size:10px;color:#193E56}.progress-table{width:100%;border-collapse:collapse;font-size:11px}.progress-table th{font-weight:500;color:#193E56;font-size:10px;text-align:left;padding:10px 8px;border-bottom:1px solid var(--line)}.progress-table td{padding:11px 8px;border-bottom:1px solid rgba(25, 62, 86, 0.22)}.learn-note{margin-top:20px;padding:21px;border:1px solid rgba(25, 62, 86, 0.22);border-radius:14px;background:rgba(25, 62, 86, 0.035)}.learn-note h3{font-size:13px;margin-bottom:7px}.learn-note p{font-size:11px;color:#193E56;line-height:1.9}
/* Modal and toasts */
.modal-overlay{position:fixed;inset:0;z-index:1000;background:rgba(25,62,86,.333);display:flex;align-items:center;justify-content:center;padding:26px;backdrop-filter:blur(5px)}.modal{width:590px;max-width:100%;max-height:90vh;overflow:auto;border-radius:21px;background:#fff;box-shadow:0 30px 100px rgba(25, 62, 86, 0.2)}.modal.wide{width:820px}.modal-head{padding:23px 25px 17px;position:sticky;top:0;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;z-index:2}.modal-head h2{font-size:18px}.modal-body{padding:24px 26px}.modal-body p{font-size:12px;color:#193E56;line-height:1.85}.modal-body label{font-size:12px;display:block;margin:13px 0 5px}.modal-body input,.modal-body textarea,.modal-body select{width:100%;font-size:12px}.modal-body .btn{margin-top:15px}.modal-body .project-json{font-size:10px;background:rgba(25, 62, 86, 0.035);border:1px solid var(--line);border-radius:10px;padding:15px;max-height:290px;overflow:auto}.modal-hero{display:flex;align-items:center;gap:20px;background:rgba(25, 62, 86, 0.035);border-radius:13px;padding:16px}.modal-hero .island-art{width:115px;height:96px}.modal-hero h3{font-size:17px}.modal-hero p{font-size:11px;margin-top:6px}#toasts{position:fixed;right:24px;bottom:24px;z-index:2000;display:flex;flex-direction:column;gap:8px;pointer-events:none}.toast{background:#fff;border:1px solid rgba(25, 62, 86, 0.22);box-shadow:0 5px 24px rgba(25, 62, 86, 0.1);border-radius:11px;padding:13px 19px;min-width:240px;max-width:430px;display:flex;gap:10px;align-items:center;color:#193E56;font-size:12px;animation:slide-in .2s ease-out}.toast.error{color:#193E56;border-color:rgba(25, 62, 86, 0.22)}@keyframes slide-in{from{transform:translateY(12px);opacity:0}to{transform:translateY(0);opacity:1}}
@media(min-width:1600px){.map-surface{height:330px}.island-node{width:155px}.island-node .island-art{width:150px;height:132px}.node-number{left:67px;top:91px}.map-route{height:257px}.next-card h3{font-size:23px}.welcome{min-height:210px}}
@media(max-width:1200px){.sidebar{width:202px;padding:25px 16px}.main-shell{margin-left:202px}.main-content{padding:25px}.topbar{padding:0 25px}.map-layout{grid-template-columns:minmax(0,1fr) 241px;gap:15px}.map-surface{height:263px}.island-node{width:106px}.island-node .island-art{width:109px;height:98px}.node-number{left:43px;top:68px}.island-node .island-label{font-size:10px}.next-card{padding:20px}.lesson-layout{grid-template-columns:260px minmax(0,1fr);gap:16px}.mission-panel{padding:20px}.portfolio-grid{grid-template-columns:repeat(2,1fr)}.welcome{grid-template-columns:1fr 260px}.welcome h1{font-size:28px}.promo{grid-template-columns:1fr 66px;padding:15px}.promo .island-art{width:76px}.world-tab span:last-child{display:none}.passport-layout{grid-template-columns:300px 1fr}.badge-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:1000px){.sidebar{width:78px;padding:25px 13px}.brand{margin:0 0 35px 4px}.brand-text,.nav-label,.nav-item span,.side-thought,.profile-info,.profile .icon,.brand-sub{display:none}.nav-item{justify-content:center;padding:13px}.nav-item.active:after{display:none}.profile{justify-content:center}.main-shell{margin-left:78px}.map-layout{grid-template-columns:minmax(0,1fr) 241px}.lesson-layout{grid-template-columns:250px minmax(0,1fr)}.grid-lab{grid-template-columns:1fr}.game-grid{max-width:320px}.block-sequence{min-height:100px;max-height:180px}.block-empty{min-height:70px}.project-promos{gap:10px}.promo p{font-size:9px}.parent-layout{grid-template-columns:minmax(0,1fr) 240px}.bit-switches{gap:4px}.bit-btn{width:34px;height:51px}.passport-layout{grid-template-columns:270px 1fr}}
@media(max-width:760px){.sidebar{position:fixed;inset:auto 0 0 0;width:100%;height:63px;flex-direction:row;padding:7px 8px;z-index:50;border-top:1px solid var(--line);border-right:0;background:#fff;backdrop-filter:blur(10px)}.brand,.nav-label,.side-bottom{display:none}.sidebar nav{display:flex;width:100%;justify-content:space-around}.nav-item{margin:0;padding:6px 13px;flex-direction:column;gap:2px;font-size:9px;border-radius:8px;width:auto}.nav-item span{display:block}.nav-item svg{width:18px;height:18px}.main-shell{margin-left:0;padding-bottom:65px}.topbar{height:58px;padding:0 19px}.top-actions{gap:8px}.top-actions .save-indicator{display:none}.main-content{padding:22px 18px}.welcome{grid-template-columns:1fr;min-height:auto;margin-bottom:21px}.welcome h1{font-size:25px}.welcome p{font-size:11px}.hero-art{display:none}.welcome-mini{margin-top:15px}.overview-strip{margin-bottom:20px}.overview-stat{padding:12px 10px;gap:7px}.stat-icon{width:27px;height:30px;border-radius:9px}.stat-icon svg{width:16px}.stat-label{font-size:8px}.stat-number{font-size:16px}.stat-number small{font-size:9px}.world-tabs{margin-bottom:18px;padding:4px;gap:3px}.world-tab{padding:9px 7px;gap:6px;font-size:11px}.world-num{width:19px;height:19px;font-size:8px;border-radius:5px}.map-layout{grid-template-columns:1fr}.map-header{padding:19px 20px 0}.map-header h2{font-size:15px}.map-surface{height:253px;margin:0 7px}.island-node{width:98px}.island-node .island-art{width:104px;height:94px}.island-node small{font-size:8px}.node-number{left:41px;top:66px}.map-note{padding:11px 19px 16px}.next-card{padding:18px;display:block}.next-card h3{font-size:18px}.next-chapter{margin-top:10px}.next-desc{min-height:0}.next-card .btn{margin-top:15px}.next-progress{margin-top:0;padding-top:14px}.project-promos{grid-template-columns:1fr}.promo{grid-template-columns:1fr 96px;padding:17px 20px}.promo h3{font-size:14px}.promo p{font-size:11px;max-width:250px}.promo .island-art{height:80px;width:95px}.promo small{margin-top:6px}.section-heading{margin-top:23px}.lesson-heading{align-items:flex-start}.lesson-heading h1{font-size:23px}.lesson-progress{gap:4px;margin-top:10px}.lesson-progress i{width:10px;height:4px}.lesson-layout{grid-template-columns:1fr}.mission-panel{padding:21px}.quiz{margin-top:18px;padding-top:17px}.radio-card{font-size:12px}.grid-lab{grid-template-columns:1fr 1fr;gap:13px}.game-grid{border-width:5px;gap:3px}.block-sequence{min-height:140px;max-height:210px}.block-palette{gap:4px}.block-add{font-size:9px;padding:5px}.command-block{font-size:10px;padding:6px 3px}.lab-body{padding:15px;min-height:250px}.lab-actions{padding:12px}.lab-actions .muted{display:none}.lab-toolbar{padding:11px 13px}.lab-status{font-size:8px}.reflection .between{align-items:flex-start;gap:9px}.reflection small{max-width:150px}.CodeMirror{font-size:12px}.portfolio-grid{grid-template-columns:1fr}.passport-layout{grid-template-columns:1fr}.radar{max-width:320px}.badge-grid{grid-template-columns:repeat(3,1fr)}.stat-cards{grid-template-columns:repeat(2,1fr);gap:12px}.stat-card{padding:17px}.parent-layout{grid-template-columns:1fr}.parent-settings{order:-1}.parent-gate{padding:26px;margin:10px auto}.modal-overlay{padding:15px}.modal-head{padding:19px}.modal-body{padding:20px}.modal{max-height:91vh;border-radius:16px}.modal-hero{gap:10px;padding:13px}.modal-hero .island-art{width:83px;height:80px}.modal-hero h3{font-size:15px}#toasts{bottom:80px;left:17px;right:17px}.toast{min-width:0;width:100%;font-size:11px}.page-heading h1{font-size:25px}.page-heading .between{align-items:flex-start}.bit-btn{width:36px}.footer-note{font-size:9px}.topbar .breadcrumbs{font-size:10px;gap:8px}}
@media(max-width:390px){.grid-lab{grid-template-columns:1fr}.world-tab{font-size:10px}.overview-stat .stat-icon{display:none}.map-surface{height:270px}.island-node{width:90px}.island-node .island-art{width:94px;height:88px}.node-number{left:38px;top:61px}.block-sequence{min-height:120px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media print{.sidebar,.topbar,.btn,.parent-settings,.footer-note,.review-item textarea,.review-item select,.review-item details,.filter-row{display:none!important}.main-shell{margin:0}.main-content{padding:0}.parent-layout{display:block}.card{box-shadow:none;break-inside:avoid}.review-item{break-inside:avoid}.stat-cards{grid-template-columns:repeat(4,1fr)}body{background:#fff}.review-item .review-reflection{background:#fff;border:1px solid rgba(25, 62, 86, 0.22)}}
.audience-picker{padding:20px 22px;margin:0 0 22px}.audience-picker-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:14px}.audience-picker-head h2{font-size:15px}.audience-picker-head p{font-size:11px;color:var(--muted);margin-top:5px}.audience-options{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}.audience-option{display:flex;flex-direction:column;align-items:flex-start;gap:5px;text-align:left;padding:12px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);min-height:72px}.audience-option strong{font-size:11px}.audience-option span{font-size:10px;line-height:1.5;color:var(--muted)}.audience-option:hover,.audience-option.selected{border-color:rgba(25, 62, 86, 0.22);background:rgba(25, 62, 86, 0.035)}.audience-option:focus-visible{outline:3px solid rgba(25, 62, 86, 0.22);outline-offset:2px}
@media(max-width:760px){.audience-picker{padding:16px;margin-bottom:18px}.audience-options{grid-template-columns:1fr 1fr}.audience-option:last-child{grid-column:1/-1}.audience-option{min-height:66px;padding:10px}.audience-picker-head{align-items:flex-start}.audience-picker-head .tag{white-space:nowrap}}

/* Direction cues:one clear arrow, paired with a written compass heading. */
.player-arrow{display:grid;place-items:center;width:100%;height:100%;font-size:0!important;text-shadow:none!important}.player-arrow svg{width:82%;height:82%;overflow:visible}.player-arrow path{fill:#F3A546;stroke:#fff;stroke-width:1.8;stroke-linejoin:round}
.grid-direction strong{min-width:76px}
.pathway-explorer{margin:8px 0 28px}.pathway-explorer .section-heading{margin:0 0 13px}.pathway-explorer .section-heading h2{font-size:20px;margin:5px 0}.pathway-explorer .section-heading p{font-size:12px;color:var(--muted)}.pathway-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.pathway-card{padding:16px 18px;align-self:start}.pathway-card>summary{cursor:pointer;display:grid;grid-template-columns:1fr auto;gap:5px 12px;list-style:none}.pathway-card>summary::-webkit-details-marker{display:none}.pathway-title{font-weight:650;font-size:14px}.pathway-count{font-size:11px;color:var(--muted)}.pathway-desc{font-size:11px;line-height:1.6;color:var(--muted);grid-column:1/-1}.pathway-next{margin-top:12px}.pathway-lessons{margin-top:10px}.pathway-lessons .lesson-list-item{padding:10px 8px}.pathway-lessons .lesson-list-meta{font-size:10px}
.btree-inputs{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:12px 0}.btree-inputs label{font-size:11px;color:#193E56}.btree-inputs input{display:block;width:100%;margin-top:5px;font:12px ui-monospace,monospace}.btree-result{margin-top:14px;padding:13px;border:1px solid rgba(25, 62, 86, 0.22);border-radius:10px;background:rgba(25, 62, 86, 0.035)}.btree-result h4{font-size:11px;color:#193E56;margin:12px 0 7px}.btree-result h4:first-child{margin-top:0}.btree-level{display:grid;grid-template-columns:48px 1fr;gap:10px;align-items:center;padding:7px 9px;margin:5px 0;border-radius:7px;background:rgba(25, 62, 86, 0.035);font:12px ui-monospace,monospace;overflow:auto}.btree-level>span{font:10px system-ui,sans-serif;color:#193E56;white-space:nowrap}.btree-level strong{white-space:pre}.btree-result ol{padding-left:22px;margin:5px 0;color:#193E56;font-size:10px;line-height:1.8}.btree-search{font:10px ui-monospace,monospace;color:#193E56;overflow-wrap:anywhere;margin:5px 0}
@media(max-width:760px){.pathway-grid{grid-template-columns:1fr}.pathway-card{padding:14px}}
@media(max-width:760px){.btree-inputs{grid-template-columns:1fr}.btree-level{grid-template-columns:40px 1fr;padding:7px 6px;font-size:10px}}
.game-grid{grid-template-columns:repeat(var(--grid-size,6),minmax(0,1fr));grid-template-rows:repeat(var(--grid-size,6),minmax(0,1fr));box-sizing:border-box}.grid-cell{display:block;box-sizing:border-box;aspect-ratio:auto;min-height:0;overflow:hidden}.grid-cell>svg{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%)}.grid-cell>.player{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);margin:0}

:root{--brand-blue:#193E56;--brand-orange:#F3A546;--gold:#F3A546}
.btn-danger,.notice.warning,.notice.error{background:rgba(243,165,70,.14);color:var(--brand-blue);border-left:3px solid var(--brand-orange)}
.notice.success{background:rgba(25,62,86,.06);color:var(--brand-blue);border-left:3px solid var(--brand-blue)}
[role=alert],.error,.is-error,.status.error,.lane-failed,.section-error,.review-feedback.fail{color:var(--brand-blue);background:rgba(243,165,70,.12);border-left:3px solid var(--brand-orange)}
.brand-logo{display:block;width:48px;height:48px;flex:0 0 auto;object-fit:contain}