:root{--bg:#101613;--panel:#171f1b;--panel2:#1d2822;--line:#2d3a32;--text:#f0f1e9;--muted:#a2afa4;--green:#b4f36b;--green2:#8cc84f;--orange:#f3a764;--red:#f07d75;--mono:'IBM Plex Mono',monospace;--sans:'Assistant',sans-serif}
*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 12% 3%,#26342a 0,transparent 34rem),var(--bg);color:var(--text);font-family:var(--sans);min-height:100vh}button{font:inherit;cursor:pointer}button:focus-visible{outline:3px solid var(--orange);outline-offset:3px}.shell{width:min(1080px,calc(100% - 40px));margin:auto}.topbar{height:86px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #ffffff12}.brand{display:flex;align-items:center;gap:12px}.brand-mark{width:38px;height:38px;background:var(--green);color:#14200f;display:grid;place-items:center;font:600 20px var(--mono);border-radius:10px}.brand-name{font-size:20px;font-weight:800;letter-spacing:-.4px}.brand-name span{color:var(--green)}
.version{font:600 12px var(--mono);color:#819087;border:1px solid #303a32;border-radius:999px;padding:2px 8px}.top-meta{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:14px}.status-dot{width:7px;height:7px;border-radius:100%;background:var(--green);box-shadow:0 0 12px var(--green)}main{padding:46px 0 72px}.eyebrow{color:var(--green);font:500 12px var(--mono);letter-spacing:1.6px;text-transform:uppercase;display:flex;align-items:center;gap:10px}.eyebrow:before{content:'';width:20px;height:1px;background:var(--green)}h1{font-size:clamp(36px,5.7vw,64px);line-height:1.02;letter-spacing:-2.3px;margin:18px 0 13px;font-weight:800;max-width:670px}.hero-copy{font-size:19px;color:var(--muted);margin:0;max-width:570px}.hero-copy strong{color:var(--text);font-weight:600}.terminalline{font:13px var(--mono);color:#91a296;margin-top:26px;display:flex;align-items:center;gap:9px}.terminalline b{color:var(--green);font-weight:500}.stats{display:flex;flex-wrap:wrap;gap:12px 28px;margin-top:32px;border-top:1px solid #ffffff12;padding-top:17px;width:max-content;max-width:100%}.stat{display:flex;gap:7px;align-items:baseline}.stat strong{font:600 19px var(--mono);color:var(--green)}.stat span{font-size:13px;color:var(--muted)}.section-head{display:flex;align-items:end;justify-content:space-between;margin:54px 0 16px}.section-head h2{font-size:23px;margin:0;font-weight:700;letter-spacing:-.4px}.section-head p{color:var(--muted);margin:4px 0 0;font-size:15px}.primary-btn{border:0;background:var(--green);color:#14200f;padding:10px 16px;border-radius:8px;font-weight:800;font-size:15px;transition:background .2s,transform .2s}.primary-btn:hover{background:#c7fa8b;transform:translateY(-1px)}.secondary-btn{border:1px solid var(--line);background:var(--panel2);color:var(--text);padding:9px 14px;border-radius:8px;font-weight:700}.secondary-btn:hover{border-color:#73836f}.source-note{margin-top:24px;padding:14px 16px;background:#b4f36b08;border:1px solid #b4f36b19;border-radius:10px;color:#b5c1b7;font-size:14px;display:flex;align-items:center;gap:11px}.source-note span{font:14px var(--mono);color:var(--green)}.recent{margin-top:50px}.recent-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:13px}.recent-title h2{font-size:18px;margin:0}.recent-title button{border:0;background:none;color:var(--green);font-size:14px}.command-pills{display:flex;gap:8px;flex-wrap:wrap}.pill{border:1px solid var(--line);border-radius:7px;padding:7px 10px;color:#aeb9ad;font:12px var(--mono);background:#151c18}.screen{display:none}.screen.active{display:block;animation:enter .25s ease}@keyframes enter{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}.game-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}.back-btn{background:none;border:0;color:var(--muted);padding:7px 0;font-size:15px}.back-btn:hover{color:var(--green)}.game-title{font-size:23px;margin:0 0 3px}.game-subtitle{margin:0;color:var(--muted);font-size:14px}.counter{font:13px var(--mono);color:var(--green);background:#b4f36b11;border:1px solid #b4f36b26;border-radius:20px;padding:8px 12px}.progress-track{height:4px;background:#27322b;border-radius:5px;overflow:hidden;margin:18px 0 27px}.progress-fill{height:100%;background:var(--green);width:0;transition:width .3s}.question-card{background:linear-gradient(140deg,#1b241f,#151b18);border:1px solid var(--line);border-radius:16px;padding:27px 28px;margin-bottom:14px}.question-tag{font:11px var(--mono);color:var(--green);letter-spacing:1px;text-transform:uppercase}.question-card h2{font-size:clamp(20px,3vw,27px);line-height:1.3;margin:12px 0 0;max-width:750px}.question-code[hidden]{display:none}
#questionText,#feedback{white-space:pre-line}
#nextQuestion{position:relative;overflow:hidden;isolation:isolate}
#nextQuestion.counting::before{content:'';position:absolute;inset:0;z-index:-1;background:#8fd14f;transform:scaleX(0);transform-origin:right;animation:next-fill 2s linear forwards}
@keyframes next-fill{to{transform:scaleX(1)}}
.bandit-note{display:flex;flex-wrap:wrap;gap:12px;align-items:center;color:var(--muted);font-size:14px;margin:0 0 18px}
.bandit-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.bandit-row{border:1px solid var(--line);border-radius:12px;padding:14px;background:#141b17;display:grid;gap:8px}
.bandit-row.done{border-color:#4f6b3a;background:#b4f36b0a}
.bandit-head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.bandit-head strong{font-size:15px}.bandit-head a{color:var(--green);font-size:13px;text-decoration:none}
.bandit-row p{margin:0;font-size:14px;color:#c9d4cb}
.bandit-cmds{display:flex;flex-wrap:wrap;gap:6px}.bandit-cmds code{font:12px var(--mono);border:1px solid #303a32;border-radius:6px;padding:2px 7px;color:var(--green);direction:ltr;unicode-bidi:isolate}
.bandit-check{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--muted);cursor:pointer}.bandit-check input{width:18px;height:18px;accent-color:var(--green)}
.toggles{display:flex;gap:10px;flex-wrap:wrap;margin:0 0 14px}
.segmented{display:inline-flex;border:1px solid #303a32;border-radius:999px;padding:3px;background:#121915}
.segmented button{border:0;background:transparent;color:var(--muted);padding:7px 14px;border-radius:999px;font-size:14px;cursor:pointer;min-height:36px}
.segmented button[aria-pressed=true]{background:var(--green);color:#14200f;font-weight:700}
.segmented[hidden]{display:none}
.type-note{font-size:13px;color:var(--muted);margin:-6px 0 14px}
.stats-panel{margin:34px 0 0;border:1px solid var(--line);border-radius:14px;padding:18px;background:#141b17}
.stats-panel h2{font-size:19px;margin:0 0 12px}.stats-panel h3{font-size:15px;margin:18px 0 8px;color:var(--muted);font-weight:600}
.level-stats{display:grid;gap:6px}
.level-stat{display:grid;grid-template-columns:minmax(0,1fr) auto auto auto;gap:10px;align-items:center;font-size:14px;padding:7px 0;border-bottom:1px solid #ffffff0d}
.level-stat span{color:var(--muted);font-size:12px;white-space:nowrap}.level-stat b{font:600 14px var(--mono);color:var(--green);min-width:44px;text-align:end}
.weak-commands{display:flex;flex-wrap:wrap;gap:8px}.weak-commands span{font-size:13px;border:1px solid #5b3a32;color:#f3b8a8;border-radius:999px;padding:4px 10px}
.weak-commands p,.level-stats p{color:var(--muted);font-size:14px;margin:0}
.type-box{display:grid;gap:10px}
.type-input{width:100%;box-sizing:border-box;font:16px var(--mono);direction:ltr;text-align:left;background:#0d120f;color:var(--green);border:1px solid #303a32;border-radius:10px;padding:14px}
.type-input:focus{outline:none;border-color:var(--green)}
.type-input.correct{border-color:var(--green)}.type-input.wrong{border-color:#e07a5f}
.type-hint{font-size:13px;color:var(--muted)}.type-hint code{font:13px var(--mono);direction:ltr;unicode-bidi:isolate}
.type-actions{display:flex;gap:10px;flex-wrap:wrap}
.type-answer{font:15px var(--mono);direction:ltr;unicode-bidi:isolate;color:var(--green)}
.question-tag .review{margin-inline-start:8px;color:#f3c76b}
[dir=ltr] #nextQuestion.counting::before{transform-origin:left}
.lang-btn{font:600 12px var(--mono);color:var(--text);background:transparent;border:1px solid #303a32;border-radius:999px;padding:4px 10px;cursor:pointer}
.lang-btn:hover{border-color:var(--green);color:var(--green)}
@media(max-width:480px){.top-meta .status-dot,.top-meta [data-i18n=labTagline]{display:none}}
.question-code .prompt{color:#819087;font-weight:400;font-size:.65em}
.question-code{font:500 clamp(16px,3vw,25px) var(--mono);direction:ltr;display:inline-block;color:var(--green);background:#0d120f;border:1px solid #303a32;border-radius:8px;padding:10px 15px;margin-top:16px;max-width:100%;overflow-wrap:anywhere}.answers{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.answer{background:#19211c;border:1px solid #2d3931;border-radius:10px;color:var(--text);text-align:start;padding:15px 16px;min-height:63px;font-size:16px;transition:border-color .15s,background .15s;display:flex;align-items:center;gap:12px}.answer:hover:not(:disabled){border-color:#78934e;background:#202b23}.answer .letter{width:25px;height:25px;flex:0 0 25px;border:1px solid #3b493e;border-radius:6px;display:grid;place-items:center;color:#98a599;font:11px var(--mono)}.answer.correct{border-color:#84b958;background:#26351f}.answer.correct .letter{background:var(--green);color:#1a2611;border-color:var(--green)}.answer.wrong{border-color:#b86159;background:#35211e}.answer.wrong .letter{background:var(--red);color:#27100e;border-color:var(--red)}.feedback{display:none;margin-top:13px;border-radius:9px;padding:12px 15px;font-size:15px}.feedback.show{display:block}.feedback.good{background:#b4f36b12;color:#c5efa1;border:1px solid #b4f36b30}.feedback.bad{background:#f07d7510;color:#f5b1aa;border:1px solid #f07d7530}.quiz-actions{display:flex;align-items:center;justify-content:space-between;margin-top:20px}.score-label{color:var(--muted);font-size:14px}.score-label strong{color:var(--text);font:500 15px var(--mono);margin-inline-start:5px}@keyframes wobble{25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}.game-actions{display:flex;justify-content:space-between;margin-top:18px}.result-card{border:1px solid var(--line);border-radius:16px;background:#19211c;padding:44px 24px;text-align:center;max-width:650px;margin:40px auto}.result-icon{font-size:42px;color:var(--green)}.result-card h2{font-size:30px;margin:12px 0 5px}.result-card p{color:var(--muted);font-size:17px;margin:0 auto 24px;max-width:460px}.result-score{color:var(--green);font:600 22px var(--mono);margin-bottom:22px}.result-actions{display:flex;gap:10px;justify-content:center}.toast{position:fixed;bottom:25px;right:50%;transform:translate(50%,20px);opacity:0;pointer-events:none;background:#29362b;color:#d9f5c0;border:1px solid #597746;border-radius:9px;padding:10px 15px;font-size:14px;transition:all .2s}.toast.show{opacity:1;transform:translate(50%,0)}footer{border-top:1px solid #ffffff12;padding:18px 0 25px;color:#738077;font-size:13px}.footer-inner{display:flex;justify-content:space-between}.kbd{font:11px var(--mono);border:1px solid #364239;border-radius:4px;padding:2px 5px;color:#a8b4a9}
.level-grid{display:flex;gap:10px;margin:22px 0 37px;overflow-x:auto;padding-bottom:8px;scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch}.level-card{flex:1 0 132px;scroll-snap-align:start;background:#171f1b;border:1px solid var(--line);border-radius:11px;color:var(--text);text-align:start;padding:15px 16px;transition:border-color .2s,background .2s}.level-card:hover{border-color:#70834d}.level-card.selected{border-color:var(--green);background:#b4f36b0d;box-shadow:inset 0 0 0 1px #b4f36b28}.level-card strong{display:block;font-size:17px;margin-bottom:2px}.level-card span{display:block;font-size:13px;color:var(--muted);line-height:1.35}.level-card .level-step{font:11px var(--mono);color:var(--green);margin-bottom:8px}.level-note{font-size:14px;color:#b4c0b5;margin:-19px 0 18px}
.start-row{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.start-row .primary-btn{padding:13px 22px;font-size:16px}
.start-row span{font-size:14px;color:var(--muted)}.level-note strong{color:var(--green)}
@media(max-width:650px){.shell{width:min(100% - 28px,520px)}.topbar{height:69px}.brand-name{font-size:18px}.top-meta{font-size:12px}main{padding-top:34px}.stats{gap:17px}.section-head{margin-top:42px}.level-grid{gap:8px;margin:18px 0 30px}.level-card{padding:12px 14px}.level-card .level-step{margin-bottom:3px}.answers{grid-template-columns:minmax(0,1fr)}.answer{min-height:55px;padding:12px}.question-card{padding:21px 18px}.game-top{align-items:flex-start}.counter{font-size:11px;padding:7px 9px}.footer-inner{gap:8px;flex-wrap:wrap}.result-actions{flex-wrap:wrap}}
@media(prefers-reduced-motion:reduce){*,*::before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}

.tutorial-level-bar{display:flex;gap:9px;overflow-x:auto;padding:4px 2px 12px;margin-bottom:24px;scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch}.tutorial-tab{flex:1 0 142px;scroll-snap-align:start;border:1px solid var(--line);background:var(--panel);color:var(--text);text-align:start;border-radius:10px;padding:12px 14px}.tutorial-tab[aria-selected="true"]{border-color:var(--green);background:#b4f36b0d}.tutorial-tab span,.tutorial-tab strong{display:block}.tutorial-tab span{font:11px var(--mono);color:var(--green);margin-bottom:5px}.tutorial-tab strong{font-size:15px}.tutorial-heading{margin:12px 0 18px}.tutorial-heading h2{margin:0;font-size:26px}.tutorial-heading p{margin:5px 0;color:var(--muted)}.tutorial-search-label{display:block;color:var(--muted);font-size:14px;margin-bottom:7px}.tutorial-search{width:100%;max-width:520px;padding:12px 14px;border-radius:9px;border:1px solid var(--line);background:#121915;color:var(--text);font:inherit;margin-bottom:16px}.tutorial-lessons{display:grid;gap:9px}.tutorial-load-more{margin:17px 0 0}.tutorial-load-more[hidden]{display:none}.tutorial-lesson{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:0 15px}.tutorial-lesson summary{display:flex;justify-content:space-between;align-items:center;gap:14px;cursor:pointer;padding:14px 0;list-style:none}.tutorial-lesson summary::-webkit-details-marker{display:none}.tutorial-lesson summary span{font:11px var(--mono);color:var(--green)}.tutorial-lesson p{color:#c1ccc2;margin:0 0 12px;line-height:1.55}.tutorial-example{display:flex;align-items:center;justify-content:space-between;gap:14px;background:#0d120f;border:1px solid #303a32;border-radius:7px;padding:10px 12px;margin-bottom:13px}.tutorial-example span{font-size:12px;color:var(--muted)}.tutorial-example code{direction:ltr;text-align:left;overflow-wrap:anywhere;color:var(--green);font:13px var(--mono)}

.panel-note{font-size:13px;color:var(--muted);margin:0 0 10px}
.panel-actions{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.time-label{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--muted)}
.time-label input{font:15px var(--mono);background:#0d120f;color:var(--text);border:1px solid #303a32;border-radius:8px;padding:8px 10px;min-height:40px}
.answer>span:last-child{min-width:0;overflow-wrap:anywhere}
.answer code{overflow-wrap:anywhere;white-space:normal}
.question-card h2,.feedback{overflow-wrap:anywhere}

.head-actions{display:flex;flex-direction:column;gap:8px}
.mission-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.mission-card{width:100%;text-align:start;display:grid;gap:4px;border:1px solid var(--line);border-radius:12px;background:#141b17;color:var(--text);padding:14px;font-size:14px;cursor:pointer}
.mission-card span{color:#c9d4cb}.mission-card.done{border-color:#4f6b3a;background:#b4f36b0a}
.mission-goal{font-size:16px;margin:4px 0 12px}
.terminal{margin:14px 0;border:1px solid #303a32;border-radius:10px;background:#0b0f0d;text-align:left;overflow:hidden}
.term-output{margin:0;padding:12px;max-height:46vh;min-height:140px;overflow:auto;white-space:pre-wrap;overflow-wrap:anywhere;font:13px/1.5 var(--mono);color:#d7e3d9}
.term-line{display:flex;align-items:center;gap:6px;border-top:1px solid #1f2923;padding:8px 12px}
.term-prompt{font:13px var(--mono);color:var(--green);white-space:nowrap}
.term-input{flex:1;min-width:0;background:transparent;border:0;color:#e8f2ea;font:16px var(--mono);padding:6px 0}
.term-input:focus{outline:none}
.mission-form{display:grid;gap:8px;max-width:420px;margin-top:6px}
.mission-result{font-weight:600;min-height:1.4em}.mission-result.good{color:var(--green)}.mission-result.bad{color:#f3b8a8}

.hint-area{margin:0 0 12px}.hint-btn{padding:8px 14px;font-size:14px}.hint-btn:disabled{opacity:.6;cursor:default}
.hint-text{margin-top:10px;border:1px dashed #4f6b3a;border-radius:9px;padding:10px 14px;font-size:15px;line-height:1.6;color:#d5e6c6;background:#b4f36b0a;overflow-wrap:anywhere}
.answer.eliminated{opacity:.35;text-decoration:line-through}
.hint-text code{font:14px var(--mono);color:var(--green);unicode-bidi:isolate}
.q-lead{display:block;font-size:15px;font-weight:500;color:var(--muted);margin-bottom:6px}
.seg-label{align-self:center;color:var(--muted);font-size:13px;padding-inline:10px 4px}
.hint-area{display:flex;flex-wrap:wrap;gap:8px;align-items:flex-start}.hint-area>.hint-text,.hint-area>.report-panel{flex:1 0 100%}.report-btn{margin-inline-start:auto;color:var(--muted)}
.report-panel{margin-top:6px;border:1px solid var(--line);border-radius:10px;padding:14px 16px;background:var(--panel2);display:grid;gap:8px}.report-panel[hidden]{display:none}.report-panel h3{margin:0;font-size:16px}.report-panel label{font-size:13px;color:var(--muted)}
.report-panel select,.report-panel textarea{width:100%;font:inherit;font-size:16px;color:var(--text);background:#0d120f;border:1px solid #3b493e;border-radius:8px;padding:8px 10px}.report-panel textarea{resize:vertical}
.report-actions{display:flex;flex-wrap:wrap;gap:10px}.report-actions .primary-btn{text-decoration:none}
.mode-switch{display:flex;border:1px solid var(--line);border-radius:999px;padding:2px;background:#151c18}.mode-switch .mode{padding:5px 11px;border-radius:999px;font-size:13px;font-weight:700;color:var(--muted);text-decoration:none;white-space:nowrap}.mode-switch .mode.on{background:var(--green);color:#14200f}.mode-switch a.mode:hover{color:var(--text)}
@media (max-width:640px){.top-meta .tagline,.top-meta .status-dot{display:none}}
@media (max-width:400px){.brand .version{display:none}.mode-switch .mode{padding:4px 8px;font-size:12px}}
@media (max-width:360px){.brand .brand-name{display:none}}