.course-catalog{background:#081811}.course-summary{display:grid;grid-template-columns:auto 1fr;gap:2px 14px;align-items:center;margin-bottom:28px}.course-summary b{font:500 28px DM Mono;color:var(--green)}.course-summary span{font-size:12px;color:var(--muted)}.course-summary i{grid-column:1/-1;height:3px;background:#173020;margin-top:8px}.course-summary em{display:block;width:0;height:100%;background:var(--green);transition:width .35s}.course-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.course-card{min-height:330px;padding:24px;border:1px solid var(--line);border-radius:8px;background:var(--panel);display:flex;flex-direction:column;transition:.2s}.course-card:hover{border-color:#4e785c;transform:translateY(-3px)}.course-card.is-complete{box-shadow:inset 3px 0 var(--green)}.course-card-meta{display:flex;justify-content:space-between;color:var(--green);font:10px DM Mono}.course-card-meta small{color:#6c8775}.course-card>p{margin:33px 0 8px;color:#587562;font:9px DM Mono;letter-spacing:.08em;text-transform:uppercase}.course-card h3{font-size:20px;margin:0 0 10px}.course-card>div:not(.course-card-meta){font-size:12px;line-height:1.7;color:#8da392}.course-card ul{list-style:none;padding:0;margin:18px 0 24px;color:#6f8a78;font:10px/1.8 DM Mono}.course-card li:before{content:'+';color:var(--green);margin-right:7px}.course-card a{margin-top:auto;border-top:1px solid var(--line);padding-top:15px;color:var(--bright);font-size:12px}.course-card a b{float:right;color:var(--green)}
.lesson-view{position:fixed;inset:0;z-index:100;background:#07130d;color:var(--text);overflow:auto;opacity:0;visibility:hidden;transform:translateY(12px);transition:.2s}.lesson-view.is-open{opacity:1;visibility:visible;transform:none}.lesson-open{overflow:hidden}.lesson-shell{min-height:100%}.lesson-header{position:sticky;top:0;z-index:5;min-height:64px;padding:0 clamp(20px,5vw,72px);display:grid;grid-template-columns:1fr auto 1fr;align-items:center;border-bottom:1px solid var(--line);background:rgba(7,19,13,.94);backdrop-filter:blur(16px);font:10px DM Mono}.lesson-header a{color:var(--green);text-decoration:none}.lesson-header span{color:#829b89}.lesson-header small{text-align:right;color:#5d7866}.lesson-content{width:min(920px,calc(100% - 40px));margin:auto;padding:72px 0 100px}.lesson-hero{padding-bottom:62px;border-bottom:1px solid var(--line)}.lesson-hero>p,.lesson-block>span,.split-block span{font:10px DM Mono;color:var(--green);letter-spacing:.1em}.lesson-hero h1{font-size:clamp(46px,7vw,82px);line-height:.98;letter-spacing:-.055em;margin:18px 0 24px}.lesson-hero>div{max-width:670px;color:#91a998;font-size:16px;line-height:1.8}.lesson-block{padding:58px 0;border-bottom:1px solid var(--line)}.lesson-block h2{font-size:30px;letter-spacing:-.035em;margin:13px 0 20px}.lesson-block>p{font-size:15px;line-height:1.9;color:#a2b5a7}.objectives ul,.split-block ul{list-style:none;padding:0;display:grid;gap:10px}.objectives li,.split-block li{padding:13px 15px;border:1px solid #23402e;background:#0b1c13;font-size:13px}.objectives li:before,.split-block li:before{content:'✓';color:var(--green);margin-right:10px}.code-block{position:relative}.code-block pre{margin:24px 0 0;padding:28px;background:#030a06;border:1px solid #21402d;border-radius:8px;overflow:auto}.code-block code{font:12px/1.8 DM Mono;color:#b9d2c0}.code-block button{position:absolute;right:12px;top:70px;background:#163422;color:var(--green);border:1px solid #315740;padding:8px 12px;font:9px DM Mono;cursor:pointer}.lab-block ol{counter-reset:lab;list-style:none;padding:0;display:grid;gap:10px}.lab-block li{counter-increment:lab;padding:16px 16px 16px 58px;border:1px solid var(--line);position:relative;color:#b2c4b7;font-size:13px}.lab-block li:before{content:counter(lab,decimal-leading-zero);position:absolute;left:16px;color:var(--green);font:11px DM Mono}.expected{margin-top:22px;padding:20px;background:rgba(116,239,157,.08);border-left:3px solid var(--green)}.expected b{font:10px DM Mono;color:var(--green)}.expected p{margin:8px 0 0;color:#a6baac;font-size:13px;line-height:1.7}.split-block{display:grid;grid-template-columns:1fr 1fr;gap:45px}.split-block h2{font-size:24px}.quiz-block{background:#0a1c12;padding-left:28px;padding-right:28px}.lesson-options{display:grid;gap:9px}.lesson-options button{text-align:left;padding:15px;background:#0d2518;border:1px solid #2a4935;color:#aec0b3;cursor:pointer}.lesson-options button i{display:inline-grid;place-items:center;width:25px;height:25px;margin-right:12px;border:1px solid #42604c;font:10px DM Mono;font-style:normal}.lesson-options button.correct{border-color:var(--green);color:var(--green)}.lesson-options button.wrong{border-color:#ff8c75;color:#ff9b86}.quiz-block>p{font:11px DM Mono;color:#78917f}.lesson-finish{padding:42px 0;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.lesson-finish span{font:10px DM Mono;color:var(--green)}.lesson-finish h2{margin:8px 0 0;font-size:22px}.lesson-finish button{padding:13px 18px;border:0;background:var(--green);color:#071b0e;font-weight:800;cursor:pointer}.lesson-pager{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding-top:36px}.lesson-pager a{color:#90aa98;font-size:12px;text-decoration:none}.lesson-pager a:last-child{text-align:right}.lesson-pager a:hover{color:var(--green)}
@media(max-width:950px){.course-list{grid-template-columns:repeat(2,1fr)}}@media(max-width:700px){.course-list{grid-template-columns:1fr}.lesson-header{grid-template-columns:1fr auto}.lesson-header span{display:none}.lesson-content{padding-top:45px}.lesson-hero h1{font-size:45px}.split-block{grid-template-columns:1fr;gap:35px}.lesson-finish{align-items:flex-start;flex-direction:column;gap:24px}.lesson-pager{grid-template-columns:1fr}.lesson-pager a:last-child{text-align:left}}@media(prefers-reduced-motion:reduce){.lesson-view,.course-card{transition:none}}