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.theme-photoshop{--world-image:url('/assets/courses/photoshop.png');--world-ground:#101116;--world-panel:#181b22;--world-line:#4a5260;--world-pattern:linear-gradient(45deg,#fff04 25%,transparent 25% 75%,#fff04 75%);background-size:22px 22px;--world-radius:2px;--world-shadow:10px 10px #05060855}.theme-photoshop .map-cluster:nth-child(even){transform:translateX(20px)}.theme-photoshop .node{background:linear-gradient(135deg,#1e2229,#11141a)}.theme-photoshop .lesson-head h1{font-weight:500}
.theme-blender{--world-image:url('/assets/courses/blender.png');--world-ground:#0c1115;--world-panel:#111a20;--world-line:#4b5a63;--world-pattern:linear-gradient(30deg,#ff9b550b 1px,transparent 1px),linear-gradient(150deg,#ff9b550b 1px,transparent 1px);background-size:36px 62px;--world-radius:3px;--world-shadow:inset 0 0 20px #000}.theme-blender .node{clip-path:polygon(8% 0,100% 0,100% 85%,92% 100%,0 100%,0 15%)}.theme-blender .map-cluster h3{font-family:var(--mono);text-transform:uppercase}.theme-blender .map{border-left:1px dashed #ff9b55}
.theme-3d-printing{--world-image:url('/assets/courses/3d-printing.png');--world-ground:#10150d;--world-panel:#182313;--world-line:#506844;--world-pattern:linear-gradient(30deg,#9ddb670b 12%,transparent 12.5% 87%,#9ddb670b 87.5%);background-size:36px 62px;--world-radius:0;--world-shadow:inset -6px -6px #080b0755}.theme-3d-printing .node{border-width:2px;image-rendering:pixelated}.theme-3d-printing .map-cluster h3,.theme-3d-printing .lesson-head h1{font-family:var(--mono)}
.theme-ai{--world-image:url('/assets/courses/ai.png');--world-ground:#090812;--world-panel:#12101d;--world-line:#4c4269;--world-pattern:radial-gradient(circle at 20% 30%,#cda8ff18 1px,transparent 2px),radial-gradient(circle at 70% 65%,#67d7ff14 1px,transparent 2px);background-size:77px 81px,101px 95px;--world-radius:50% 4px 50% 4px;--world-shadow:0 0 24px #cda8ff15}.theme-ai .map-cluster h3,.theme-ai .lesson-head h1{font-family:var(--serif);font-weight:500}.theme-ai .map{border-left:1px dotted #cda8ff;box-shadow:-8px 0 25px #cda8ff22}
.theme-sql{--world-image:url('/assets/courses/sql.png');--world-ground:#15120c;--world-panel:#211d14;--world-line:#5f5336;--world-pattern:repeating-linear-gradient(0deg,transparent 0 31px,#e8cf8e08 32px);--world-radius:0;--world-shadow:inset 5px 0 #e8cf8e16}.theme-sql .map-cluster{border:1px solid #4b4029;padding:18px}.theme-sql .map-cluster:before{left:-64px;width:45px}.theme-sql .map-cluster h3,.theme-sql .lesson-head h1{font-family:var(--serif);color:#eee3c5}.theme-sql .node{border-left:7px double #776744}

@media(max-width:650px){.world-hero{height:620px}.world-bg{object-position:64% center}.world-copy{padding:0 24px 48px}.world-atmosphere{background:linear-gradient(0deg,var(--world-ground) 4%,#080a0cb8 65%,transparent)}.theme-photoshop .map-cluster:nth-child(even){transform:none}}

/* Persistent lesson navigation and explicit assessment feedback */
.lesson-rail{position:sticky;top:76px;height:calc(100vh - 76px);align-self:start;grid-row:1 / span 2;z-index:5;background:color-mix(in srgb,var(--world-ground,#090b0d) 92%,transparent);backdrop-filter:blur(10px)}
.knowledge output:not(:empty){display:flex;gap:16px;align-items:flex-start;padding:20px;border:1px solid var(--result-border,var(--accent));border-left-width:5px;background:var(--result-bg,transparent);color:var(--result-text,#eee);box-shadow:inset 0 0 28px var(--result-glow,transparent)}
.knowledge output.result-correct{--result-border:#4fd587;--result-bg:#0d281b;--result-text:#dcffea;--result-glow:#42db7d14}
.knowledge output.result-incorrect{--result-border:#e36969;--result-bg:#2a1113;--result-text:#ffe5e5;--result-glow:#e35a5a12}
.knowledge output .result-icon{flex:0 0 30px;width:30px;height:30px;display:grid;place-items:center;border:1px solid currentColor;border-radius:50%;font-size:19px;font-weight:700}
.knowledge output>span:last-child{display:flex;flex-direction:column;gap:5px;line-height:1.55}.knowledge output b{font-size:15px}.knowledge output.result-correct small{color:#4fd587}.knowledge output.result-incorrect small{color:#e98b8b}
@media(max-width:1000px){.lesson-rail{display:none}}

/* Substantive visual lesson blocks */
.tool-reference>p:not(.kicker){color:#aaa;line-height:1.7;max-width:760px}.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:#394148;border:1px solid #394148;margin-top:28px}.tool-grid article{display:grid;grid-template-columns:64px 1fr;gap:16px;padding:20px;background:#141820}.tool-symbol{width:54px;height:54px;border:1px solid #58636c;display:grid;place-items:center;font:25px var(--mono);color:var(--accent);background:#0b0e12}.tool-grid h3{font:600 14px var(--sans);margin:1px 0 9px;display:flex;justify-content:space-between;gap:10px}.tool-grid kbd{font:500 10px var(--mono);border:1px solid #56616a;border-bottom-width:3px;padding:3px 7px;color:#dce6ea;background:#222932}.tool-grid p{font-size:12px;color:#c2c7c9;margin:0 0 7px;line-height:1.5}.tool-grid small{font:10px/1.5 var(--mono);color:#747f85}.lesson-image{border:1px solid #3b444b;background:#11151b}.lesson-image img{display:block;width:100%;aspect-ratio:3/2;object-fit:cover}.lesson-image figcaption{padding:26px 30px;border-top:3px solid var(--accent)}.lesson-image figcaption h2{font-size:29px}.lesson-image figcaption>p:last-child{color:#b6bec1;line-height:1.7}.walkthrough ol{list-style:none;padding:0;margin:28px 0;border-top:1px solid #3a4147}.walkthrough li{display:grid;grid-template-columns:55px 1fr;border-bottom:1px solid #30373c;padding:15px 0;align-items:start}.walkthrough li>span{font:11px var(--mono);color:var(--accent);padding-top:4px}.walkthrough li p{margin:0;line-height:1.7;color:#c8ccce}.decision-table{border:1px solid #3b4349;margin-top:26px;overflow-x:auto}.decision-table>div{display:grid;grid-template-columns:minmax(170px,1fr) minmax(180px,1.2fr) minmax(230px,1.5fr);border-bottom:1px solid #30373c;min-width:620px}.decision-table>div:last-child{border-bottom:0}.decision-table span{padding:15px;font-size:12px;line-height:1.5;border-right:1px solid #30373c}.decision-table span:last-child{border:0}.decision-table .table-head{background:#202730}.decision-table .table-head span{font:500 9px var(--mono);letter-spacing:.12em;color:var(--accent);text-transform:uppercase}.block.callout{padding:28px 32px;border-left:4px solid var(--accent);background:color-mix(in srgb,var(--accent) 7%,#101419)}.block.callout>p:last-child{color:#c3c8ca;line-height:1.75}.theme-photoshop .tool-grid article,.theme-photoshop .lesson-image,.theme-photoshop .decision-table{box-shadow:8px 8px #05060866}
@media(max-width:700px){.tool-grid{grid-template-columns:1fr}.tool-grid article{grid-template-columns:48px 1fr}.tool-symbol{width:42px;height:42px}.lesson-image figcaption{padding:20px}.decision-table{margin-inline:-8px}}

/* Dense lesson formats: compact enough to scan, substantial enough to work from */
.deep-prose>p:not(.kicker){max-width:780px;color:#c5cbcd;font-size:15px;line-height:1.8;margin:14px 0}.worked-example,.bench-lab,.diagnostic-tree{border:1px solid #36413e;background:#0d1312}.worked-given,.worked-example aside,.lab-result,.bench-lab>aside{display:grid;grid-template-columns:130px 1fr;gap:20px;padding:18px 22px;background:#141d1a;border-left:3px solid var(--accent);margin:22px 0}.worked-given b,.worked-example aside b,.lab-result b,.bench-lab>aside b,.lab-gear>b{font:600 9px var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--accent)}.worked-given p,.worked-example aside p,.lab-result p,.bench-lab>aside p{margin:0;color:#cbd1cf;line-height:1.65}.worked-example ol,.bench-lab ol{list-style:none;padding:0;margin:20px 0}.worked-example li,.bench-lab li{display:grid;grid-template-columns:42px 1fr;gap:14px;padding:12px 4px;border-bottom:1px solid #29322f}.worked-example li>span,.bench-lab li>span{font:600 10px var(--mono);color:var(--accent);padding-top:4px}.worked-example li p,.bench-lab li p{margin:0;line-height:1.65;color:#c7cdca}.lab-gear{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:20px 0}.lab-gear>b{margin-right:10px}.lab-gear span{font:10px var(--mono);padding:7px 10px;border:1px solid #41504a;color:#bdc8c3}.bench-lab>aside{border-left-color:#e7a64c;background:#1b1610}.bench-lab>aside b{color:#e7a64c}.diagnostic-tree dl{margin:22px 0 0}.diagnostic-tree dl>div{display:grid;grid-template-columns:minmax(150px,.8fr) minmax(240px,1.7fr);border-top:1px solid #303b37}.diagnostic-tree dt,.diagnostic-tree dd{padding:15px;margin:0;line-height:1.55}.diagnostic-tree dt{font:600 11px/1.5 var(--mono);color:var(--accent);border-right:1px solid #303b37}.diagnostic-tree dd{font-size:13px;color:#c3cac7}.theme-electronics .lesson-body>.block{margin-bottom:26px}.theme-electronics .lesson-body h2{margin-bottom:16px}.theme-electronics .knowledge{margin-top:48px}
@media(max-width:650px){.worked-given,.worked-example aside,.lab-result,.bench-lab>aside,.diagnostic-tree dl>div{grid-template-columns:1fr;gap:7px}.diagnostic-tree dt{border-right:0;padding-bottom:4px}.diagnostic-tree dd{padding-top:4px}.worked-example,.bench-lab,.diagnostic-tree{padding:22px 18px}.lab-gear{align-items:flex-start;flex-direction:column}.lab-gear>b{margin-bottom:4px}}

/* Course-map completion control */
.node{align-items:flex-start}.node>a{min-width:0;flex:1;align-self:stretch;display:flex;flex-direction:column}.node>a small,.node>a i{font:9px var(--mono);color:#777;font-style:normal}.node>a b{font:500 16px var(--serif);margin:13px 0 auto}.node-status{flex:0 0 30px;width:30px;height:30px;border:1px solid color-mix(in srgb,var(--accent) 65%,#555);background:color-mix(in srgb,var(--accent) 8%,#101314);color:var(--accent);display:grid;place-items:center;padding:0;cursor:pointer;font:15px var(--mono);transition:background .18s,box-shadow .18s,transform .18s}.node-status:hover:not(:disabled),.node-status:focus-visible{background:color-mix(in srgb,var(--accent) 24%,#101314);box-shadow:0 0 15px color-mix(in srgb,var(--accent) 35%,transparent);transform:scale(1.08);outline:2px solid #fff;outline-offset:3px}.node.done .node-status{background:var(--accent);color:#071008;border-color:var(--accent)}.node-status:disabled{cursor:not-allowed;filter:grayscale(1);opacity:.55}.theme-python .node-status,.theme-electronics .node-status,.theme-networking .node-status,.theme-ai .node-status{border-radius:50%}.theme-wordpress .node-status{box-shadow:inset 0 0 0 2px #1a1107}.theme-cybersecurity .node-status{border-width:2px}.theme-3d-printing .node-status{border-width:2px;box-shadow:inset -3px -3px #0006}
.search-open{display:inline-flex;align-items:center;gap:7px}.search-icon{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}.search-open:hover,.search-open:focus-visible{color:#fff}.search-open:focus-visible{outline:2px solid #fff;outline-offset:5px}

/* Linux districts: one underground world, six distinct operational spaces */
.theme-linux .map-cluster{padding:22px;background:#080d09;border:1px solid #26382a;overflow:hidden}.theme-linux .map-cluster>h3{position:relative;z-index:2}.theme-linux .map-cluster>h3 small{display:block;font:500 8px var(--mono);letter-spacing:.2em;color:#6c8b70;margin-bottom:9px}.theme-linux .map-cluster:after{content:attr(data-district);position:absolute;right:16px;top:15px;font:500 8px var(--mono);letter-spacing:.14em;color:#a8e06355;text-transform:uppercase}.theme-linux .map-cluster.module-filesystem{border-color:#536b3b;background:linear-gradient(120deg,#11180b,#080d09)}.theme-linux .map-cluster.module-shell-pipes{border-color:#8c602a;background:repeating-linear-gradient(0deg,#120e08 0 7px,#1b1208 8px)}.theme-linux .map-cluster.module-permissions{border-color:#8a7636;background:linear-gradient(135deg,#171509,#080b08)}.theme-linux .map-cluster.module-processes{border-color:#7d3f34;background:linear-gradient(90deg,#180c0a,#090b09)}.theme-linux .map-cluster.module-services{border-color:#39707a;background:repeating-linear-gradient(90deg,#071113 0 39px,#0b1b1e 40px)}.theme-linux .map-cluster.module-networking{border-color:#276d68;background:radial-gradient(circle at 80%,#0b3a3522,#07100f 55%)}
.theme-linux.module-filesystem{--accent:#b2d66c;--world-ground:#0b1008;--world-panel:#12190c;--world-line:#52643a;--world-pattern:linear-gradient(90deg,#b2d66c0a 1px,transparent 1px);background-size:52px 52px}.theme-linux.module-filesystem .lesson-head{background-image:linear-gradient(90deg,#080c07f5 0%,#080c07c0 55%,transparent),var(--lesson-image,url('/courses/linux/images/module-filesystem.png'))}
.theme-linux.module-shell-pipes{--accent:#e7a64c;--world-ground:#120d07;--world-panel:#1c1208;--world-line:#70461f;--world-pattern:repeating-linear-gradient(0deg,transparent 0 23px,#e7a64c09 24px)}.theme-linux.module-shell-pipes .lesson-head{background-image:linear-gradient(90deg,#100b06f4 0%,#100b06be 55%,transparent),url('/courses/linux/images/module-shell-pipes.png')}.theme-linux.module-shell-pipes .terminal{border-color:#8f5b26}.theme-linux.module-shell-pipes .terminal pre{color:#f0b860}
.theme-linux.module-permissions{--accent:#e0ca70;--world-ground:#111006;--world-panel:#1b190a;--world-line:#70672e;--world-pattern:linear-gradient(45deg,#e0ca7008 25%,transparent 25% 75%,#e0ca7008 75%);background-size:28px 28px}.theme-linux.module-permissions .lesson-head{background-image:linear-gradient(90deg,#0e0d05f5 0%,#0e0d05c0 55%,transparent),url('/courses/linux/images/module-permissions.png')}.theme-linux.module-permissions .block.diagram{border-width:3px;box-shadow:inset 0 0 0 1px #171406}
.theme-linux.module-processes{--accent:#e77c62;--world-ground:#120908;--world-panel:#1c0d0b;--world-line:#773a31;--world-pattern:repeating-linear-gradient(90deg,transparent 0 47px,#e77c6208 48px)}.theme-linux.module-processes .lesson-head{background-image:linear-gradient(90deg,#100605f5 0%,#100605c0 55%,transparent),url('/courses/linux/images/module-processes.png')}.theme-linux.module-processes .block.diagram pre{color:#f09a83}
.theme-linux.module-services{--accent:#64c7d6;--world-ground:#061013;--world-panel:#09191c;--world-line:#2e6670;--world-pattern:linear-gradient(90deg,#64c7d608 1px,transparent 1px),linear-gradient(#64c7d608 1px,transparent 1px);background-size:42px 42px}.theme-linux.module-services .lesson-head{background-image:linear-gradient(90deg,#050d0ff5 0%,#050d0fc0 55%,transparent),url('/courses/linux/images/module-services.png')}.theme-linux.module-services .node,.theme-linux.module-services .block{border-radius:3px}
.theme-linux.module-networking{--accent:#55d6c9;--world-ground:#04100e;--world-panel:#071a17;--world-line:#286d66;--world-pattern:radial-gradient(circle,#55d6c914 1px,transparent 2px);background-size:31px 31px}.theme-linux.module-networking .lesson-head{background-image:linear-gradient(90deg,#030d0bf5 0%,#030d0bc0 55%,transparent),url('/courses/linux/images/module-networking.png')}.theme-linux.module-networking .block.diagram{box-shadow:0 0 25px #55d6c91a}
.theme-linux.module-filesystem .planned-page{background-image:linear-gradient(90deg,#0b1008f4,#0b1008c2 58%,transparent),url('/courses/linux/images/module-filesystem.png');background-size:cover;background-position:center}.theme-linux.module-shell-pipes .planned-page{background-image:linear-gradient(90deg,#120d07f4,#120d07c2 58%,transparent),url('/courses/linux/images/module-shell-pipes.png');background-size:cover;background-position:center}.theme-linux.module-permissions .planned-page{background-image:linear-gradient(90deg,#111006f4,#111006c2 58%,transparent),url('/courses/linux/images/module-permissions.png');background-size:cover;background-position:center}.theme-linux.module-processes .planned-page{background-image:linear-gradient(90deg,#120908f4,#120908c2 58%,transparent),url('/courses/linux/images/module-processes.png');background-size:cover;background-position:center}.theme-linux.module-services .planned-page{background-image:linear-gradient(90deg,#061013f4,#061013c2 58%,transparent),url('/courses/linux/images/module-services.png');background-size:cover;background-position:center}.theme-linux.module-networking .planned-page{background-image:linear-gradient(90deg,#04100ef4,#04100ec2 58%,transparent),url('/courses/linux/images/module-networking.png');background-size:cover;background-position:center}

/* Linux command assessment console */
.practice-feature{display:grid;grid-template-columns:90px 1fr auto;gap:25px;align-items:center;border:1px solid #3e583d;background:linear-gradient(110deg,#10170d,#09100a);padding:25px;margin:42px 0 55px}.practice-feature:hover{border-color:#a8e063;box-shadow:0 0 30px #a8e06314}.terminal-prompt{font:26px var(--mono);color:#a8e063;border:1px solid #4c6949;height:62px;display:grid;place-items:center}.practice-feature small,.practice-feature>b{font:9px var(--mono);letter-spacing:.12em;color:#7f9c7c}.practice-feature h2{font:500 25px var(--serif);margin:5px 0}.practice-feature p{font-size:12px;color:#8e9a8d;margin:0}.command-practice{min-height:100vh;padding:65px 7vw 110px;background:radial-gradient(circle at 85% 5%,#9f67231c,transparent 28%),repeating-linear-gradient(0deg,transparent 0 31px,#e7a64c08 32px),#100b06}.command-practice>.back{font:10px var(--mono);color:#ac9b7e}.command-practice>.kicker{margin-top:70px}.command-practice>h1{font:600 clamp(52px,7vw,92px)/.9 var(--serif);margin:18px 0}.command-practice>h1 em{color:#e7a64c}.command-practice>.intro{max-width:700px;color:#aaa394;line-height:1.7}.command-deck{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:55px}.command-card{border:1px solid #4c3821;background:#151008;box-shadow:inset 0 3px #e7a64c14;padding:25px;display:flex;flex-direction:column}.command-card>header{display:flex;justify-content:space-between;font:8px var(--mono);color:#88745b;letter-spacing:.1em}.command-card>header i{font-style:normal}.command-card h2{font:500 28px var(--serif);margin:27px 0 12px}.command-card>p{font-size:14px;line-height:1.65;color:#ded5c7}.command-card>aside{font-size:11px;line-height:1.6;color:#8f8577;border-left:2px solid #74502a;padding:9px 12px;margin:5px 0 25px}.command-card form{margin-top:auto}.command-card label{display:block;font:9px var(--mono);letter-spacing:.1em;color:#a89374;margin-bottom:8px}.command-line{display:flex;align-items:center;border:1px solid #594225;background:#070604}.command-line>span{font:15px var(--mono);color:#e7a64c;padding-left:13px}.command-line input{width:100%;border:0;background:transparent;color:#f1c77f;padding:15px 12px;font:13px var(--mono);outline:none}.command-line:focus-within{border-color:#e7a64c;box-shadow:0 0 15px #e7a64c22}.command-card .primary{width:100%;margin-top:12px}.command-card .primary:disabled{opacity:.55;cursor:wait}.command-result{display:block;margin-top:16px}.command-result.pending{padding:15px;border-left:3px solid #e7a64c;color:#c2ae8e;font:11px var(--mono)}.command-result:not(.pending):not(:empty){padding:17px;border:1px solid var(--verdict,#6d624f);background:#0c0905}.command-result.verdict-correct{--verdict:#4fd587}.command-result.verdict-partially_correct{--verdict:#e7a64c}.command-result.verdict-incorrect,.command-result.verdict-unsafe{--verdict:#e36969}.command-result.verdict-needs_review{--verdict:#7ca8c7}.command-result>header{display:flex;justify-content:space-between;color:var(--verdict);font:10px var(--mono);text-transform:uppercase}.command-result>p{font-size:12px;line-height:1.6}.command-result>div strong{font:9px var(--mono);color:var(--verdict);text-transform:uppercase}.command-result ul{padding-left:18px;color:#aaa;font-size:11px;line-height:1.5}.command-result pre{white-space:pre-wrap;background:#050403;padding:12px;color:#e7c887;font:11px/1.6 var(--mono)}.command-result pre span{display:block;color:#73634c;font-size:8px}.command-result>small{font:9px var(--mono);color:#71695d}
@media(max-width:1000px){.command-deck{grid-template-columns:1fr}.command-card{max-width:720px}.practice-feature{grid-template-columns:70px 1fr}.practice-feature>b{grid-column:2}}@media(max-width:600px){.command-practice{padding:45px 20px 80px}.practice-feature{grid-template-columns:1fr}.practice-feature>b{grid-column:1}.terminal-prompt{width:70px}.command-card{padding:20px}}

.adaptive-terminal{min-height:100vh;padding:55px 6vw 100px;background:radial-gradient(circle at 80% 0,#9ddb6720,transparent 28%),repeating-linear-gradient(90deg,transparent 0 63px,#9ddb6708 64px),#090d08}.adaptive-terminal>.back{font:10px var(--mono);color:#91a887}.adaptive-terminal>header{display:grid;grid-template-columns:1fr 250px;gap:50px;align-items:end;margin:55px 0 35px}.adaptive-terminal h1{font:600 clamp(48px,7vw,88px)/.9 var(--serif);margin:15px 0}.adaptive-terminal header p{max-width:680px;color:#9ca697;line-height:1.7}.session-gauge{border-left:2px solid #a8e063;padding:18px 22px;display:grid;gap:8px}.session-gauge small,.terminal-screen aside>span{font:9px var(--mono);letter-spacing:.12em;color:#74836f}.session-gauge b{font:44px var(--serif);color:#a8e063}.terminal-shell{border:1px solid #506048;box-shadow:0 20px 70px #0009,0 0 45px #a8e0630b;background:#050704}.terminal-bar{display:flex;align-items:center;gap:7px;padding:12px 16px;border-bottom:1px solid #46513f;background:#11160e}.terminal-bar i{width:8px;height:8px;border-radius:50%;background:#63705b}.terminal-bar span{font:10px var(--mono);color:#84917e;margin-left:8px}.terminal-bar strong{margin-left:auto;font:9px var(--mono);color:#a8e063}.terminal-screen{display:grid;grid-template-columns:230px 1fr;min-height:450px}.terminal-screen>aside{padding:35px 28px;border-right:1px solid #35402f;background:#0b1009;display:flex;flex-direction:column}.terminal-screen aside>b{font:36px var(--mono);color:#a8e063;margin:18px 0 8px}.terminal-screen aside>small{font:10px var(--mono);color:#98a492}.terminal-screen aside meter{margin:14px 0 25px}.terminal-screen aside p{font-size:12px;line-height:1.6;color:#7f8c78}.terminal-question{padding:42px clamp(25px,5vw,70px)}.terminal-system{font:10px var(--mono);color:#66745f}.terminal-screen h2{font:500 clamp(25px,4vw,40px)/1.2 var(--serif);max-width:780px;margin:30px 0 12px}.material-link{display:inline-block;color:#9dba8e;font:10px var(--mono);margin:0 0 30px;border-bottom:1px solid #52624b}.terminal-screen fieldset{border:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:10px}.terminal-screen fieldset label input{position:absolute;opacity:0}.terminal-screen fieldset label span{display:flex;align-items:center;gap:15px;border:1px solid #394335;padding:16px;color:#bdc7b7;cursor:pointer;font:13px var(--mono)}.terminal-screen fieldset label input:checked+span{border-color:#a8e063;background:#a8e06310;color:#eaffdc}.terminal-screen fieldset kbd{color:#a8e063;background:#131a10;padding:5px 8px}.adaptive-command{display:flex;align-items:center;border:1px solid #52614b;background:#030503}.adaptive-command span{padding-left:17px;color:#a8e063;font:12px var(--mono)}.adaptive-command input{flex:1;border:0;outline:0;background:transparent;padding:19px 12px;color:#dfffc9;font:15px var(--mono)}.adaptive-terminal form>.primary{margin-top:18px}.adaptive-result{display:block;margin-top:20px;padding:18px;border-left:3px solid #e36969;background:#190a0a;box-shadow:inset 0 0 24px #e3696908}.adaptive-result>b{color:#e36969;font:12px var(--mono);text-transform:uppercase}.adaptive-result p{font-size:12px;color:#c9b5b5}.adaptive-result>strong{display:block;margin-top:12px;padding-top:12px;border-top:1px solid #6d3030;color:#efb0b0;font:500 12px/1.6 var(--mono)}.adaptive-result a{color:#b8d7a7;font:10px var(--mono)}.adaptive-result button{float:right;border:1px solid #5c7052;background:#11180e;color:#d8e9ce;padding:9px 12px;cursor:pointer}.command-mastery{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:35px}.command-mastery>.kicker{grid-column:1/-1}.command-mastery>div{display:grid;grid-template-columns:75px 1fr 36px;align-items:center;gap:10px;border:1px solid #293126;padding:10px}.command-mastery code{color:#a8e063}.command-mastery span{font:9px var(--mono);color:#73806e;text-align:right}.block[id]{scroll-margin-top:95px}.tool-reference article[data-skill]{position:relative}.tool-reference article[data-skill]:after{content:"PRACTICED";position:absolute;right:9px;top:8px;font:7px var(--mono);color:var(--accent);letter-spacing:.1em}
@media(max-width:850px){.adaptive-terminal>header{grid-template-columns:1fr}.terminal-screen{grid-template-columns:1fr}.terminal-screen>aside{border-right:0;border-bottom:1px solid #35402f}.command-mastery{grid-template-columns:repeat(2,1fr)}}@media(max-width:560px){.adaptive-terminal{padding:35px 18px 70px}.terminal-screen fieldset{grid-template-columns:1fr}.command-mastery{grid-template-columns:1fr}.adaptive-command{align-items:flex-start;flex-direction:column}.adaptive-command span{padding:12px 12px 0}.terminal-bar span{display:none}}
.module-activity{min-height:150px;border:1px solid #7f9e58;background:linear-gradient(125deg,#17200f,#0b1008);padding:18px;display:flex;align-items:center;gap:16px;box-shadow:inset 0 3px #a8e06320}.module-activity:hover{border-color:#a8e063;transform:translateY(-2px);box-shadow:0 0 28px #a8e06316}.module-activity>span{display:grid;place-items:center;width:46px;height:46px;border:1px solid #759050;color:#a8e063;font:15px var(--mono)}.module-activity>div{display:flex;flex-direction:column}.module-activity small{font:8px var(--mono);letter-spacing:.12em;color:#80936e}.module-activity b{font:500 17px var(--serif);margin:10px 0}.module-activity i{font:9px var(--mono);font-style:normal;color:#a8e063}
.terminal-screen aside>b{font:400 12px/1.6 var(--sans);color:#7f8c78;margin:18px 0 26px}.practice-actions .primary.next-question{border-color:#a8e063;background:#a8e06310;color:#eaffdc;box-shadow:none}.practice-actions{display:flex;align-items:center;gap:22px;flex-wrap:wrap;margin-top:18px}.practice-actions .primary{margin:0;background:transparent;color:#bdc7b7;border:1px solid #394335;box-shadow:none}.practice-actions .primary:hover,.practice-actions .primary:focus-visible{border-color:#64765d;background:#11170f;color:#eff7eb}.practice-actions .material-link{margin:0;padding:13px 0}.module-filesystem>h3{display:inline-block}.module-skill-info{display:inline-block;vertical-align:middle;margin-left:12px;position:relative;z-index:5}.module-skill-info>summary{display:grid;place-items:center;width:27px;height:27px;border:1px solid #718a55;border-radius:50%;color:#a8e063;font:700 12px var(--serif);cursor:pointer;list-style:none}.module-skill-info>summary::-webkit-details-marker{display:none}.module-skill-info[open]>summary{background:#a8e063;color:#10170d}.module-skill-info>div{position:absolute;z-index:20;top:38px;left:-155px;width:min(520px,75vw);max-height:440px;overflow:auto;padding:20px;background:#080d08;border:1px solid #526b3d;box-shadow:0 18px 60px #000}.module-skill-info header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #2f4028;padding-bottom:13px;margin-bottom:8px}.module-skill-info header p{margin:0}.module-skill-info header b{font:28px var(--serif);color:#a8e063}.module-skill-info>div>p{display:grid;grid-template-columns:90px 1fr 38px;gap:12px;align-items:center;margin:0;padding:8px 0;border-bottom:1px solid #1d281a}.module-skill-info code{color:#b8c9ac}.module-skill-info span{font:9px var(--mono);color:#7e9073;text-align:right}@media(max-width:560px){.practice-actions{align-items:stretch;flex-direction:column}.practice-actions .primary{width:100%}.module-skill-info>div{position:fixed;left:18px;right:18px;top:120px;width:auto;max-height:65vh}}