:root{--bg:#f7f8fb;--panel:#fff;--ink:#171923;--muted:#687083;--line:#e5e8ef;--accent:#5d55f6;--accent-soft:#efedff;--dark:#12141c;--good:#0f8a5f;--radius:22px;--shadow:0 20px 60px rgba(22,26,45,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.6 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}body[dir=rtl]{font-family:Tahoma,Arial,sans-serif}a{text-decoration:none;color:inherit}button,input,select{font:inherit}.shell{max-width:1180px;margin:auto;padding:0 24px}.top{position:sticky;top:0;z-index:30;background:rgba(247,248,251,.94);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.topin{height:68px;display:flex;align-items:center;gap:20px}.brand{display:flex;align-items:center;gap:9px;font-weight:900}.brandmark{width:36px;height:36px;border-radius:12px;background:var(--dark);color:#fff;display:grid;place-items:center;font-size:12px}.nav{display:flex;gap:20px;margin-inline-start:auto;color:#596174;font-size:13px;font-weight:750}.nav a:hover{color:var(--accent)}.lang{border:1px solid var(--line);background:#fff;border-radius:10px;padding:7px 8px}.account-btn{border:1px solid var(--line);background:#fff;border-radius:11px;padding:8px 11px;font-weight:800;cursor:pointer}.hero{padding:84px 0 62px;display:grid;grid-template-columns:1.05fr .95fr;gap:58px;align-items:center}.kicker{font-size:11px;letter-spacing:.15em;text-transform:uppercase;font-weight:900;color:var(--accent)}h1{font-size:clamp(46px,6vw,74px);line-height:.98;letter-spacing:-.055em;margin:13px 0 22px}.hero p{font-size:19px;color:var(--muted);max-width:700px}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:25px}.btn{border:1px solid transparent;border-radius:13px;padding:12px 17px;font-weight:850;cursor:pointer;display:inline-flex;justify-content:center;align-items:center}.primary{background:var(--accent);color:#fff}.secondary{background:#fff;border-color:var(--line)}.resume-card{background:#fff;border:1px solid var(--line);border-radius:26px;padding:22px;box-shadow:var(--shadow)}.resume-card 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p{font-size:13px;color:var(--muted)}.coursegrid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}.coursecard{background:#fff;border:1px solid var(--line);border-radius:19px;padding:19px;display:flex;flex-direction:column;min-height:235px}.coursecard h3{font-size:19px;line-height:1.22;margin:12px 0 8px}.coursecard p{font-size:12.5px;color:var(--muted);margin:0 0 15px}.coursemeta{display:flex;gap:8px;flex-wrap:wrap;font-size:10px;font-weight:850;color:#72798b}.coursecard a{margin-top:auto;color:var(--accent);font-size:12px;font-weight:850}.toolbar{display:grid;grid-template-columns:1fr 220px 180px;gap:9px;margin-bottom:16px}.control{border:1px solid var(--line);background:#fff;border-radius:12px;padding:11px 13px;outline:0}.control:focus{border-color:#aaa4ff;box-shadow:0 0 0 3px var(--accent-soft)}.cloudstrip{background:#12141d;color:#fff}.cloudin{padding-top:48px;padding-bottom:48px;display:flex;align-items:center;justify-content:space-between;gap:40px}.cloudin p{color:#aeb4c4;max-width:700px}.footer{background:#0d0f16;color:#9fa6b6;padding:34px 0}.footerin{display:flex;justify-content:space-between;align-items:center;gap:24px}.footer p{font-size:11px}.modal{position:fixed;inset:0;z-index:100;background:rgba(12,14,21,.58);display:none;place-items:center;padding:18px}.modal.open{display:grid}.modalcard{width:min(480px,100%);background:#fff;border-radius:24px;padding:25px;box-shadow:0 30px 100px rgba(0,0,0,.25)}.modalhead{display:flex;justify-content:space-between;align-items:center}.close{border:0;background:#f0f1f5;border-radius:50%;width:36px;height:36px;cursor:pointer}.tabs{display:flex;gap:4px;background:#f3f4f8;border-radius:12px;padding:4px;margin:18px 0}.tabs button{flex:1;border:0;background:transparent;padding:9px;border-radius:9px;font-weight:800;cursor:pointer}.tabs button.active{background:#fff;box-shadow:0 3px 12px rgba(0,0,0,.06)}.authform{display:none}.authform.active{display:block}.authform label{display:block;font-size:11px;font-weight:800;margin:12px 0 5px}.authform input{width:100%;border:1px solid var(--line);border-radius:11px;padding:11px}.authmsg{font-size:12px;margin-top:10px;min-height:20px}.coursehero{padding:55px 0 32px}.coursehero h1{font-size:clamp(42px,5vw,62px)}.coursehero p{font-size:18px;color:var(--muted);max-width:800px}.course-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:26px;padding-bottom:70px}.syllabus{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px}.modulebox{border-top:1px solid var(--line);padding:19px 0}.modulebox:first-of-type{border-top:0}.modulehead{display:flex;justify-content:space-between;gap:16px;align-items:center}.modulehead h3{margin:0;font-size:18px}.activities{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-top:13px}.activity{border:1px solid 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@media(max-width:900px){.nav{display:none}.hero,.feature-slide,.course-layout{grid-template-columns:1fr}.courseaside{position:static}.coursegrid{grid-template-columns:repeat(2,1fr)}.levelgrid{grid-template-columns:1fr}.toolbar{grid-template-columns:1fr 1fr}.toolbar input{grid-column:1/-1}.activities{grid-template-columns:1fr}}
@media(max-width:600px){.shell{padding:0 16px}.hero{padding:54px 0}.hero h1{font-size:46px}.section{padding:58px 0}.sectionhead{display:block}.sectionhead p{margin-top:12px}.coursegrid,.dashboardgrid,.toolbar{grid-template-columns:1fr}.toolbar input{grid-column:auto}.cloudin,.footerin{display:block}.feature-slide{padding:21px}.feature-copy h3{font-size:29px}.account-btn{font-size:0}.account-btn:after{content:"◉";font-size:16px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}

.programgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.programcard{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;display:flex;flex-direction:column;min-height:260px}.programcard h3{font-size:23px;line-height:1.1;margin:14px 0 9px}.programcard p{color:var(--muted);font-size:13px}.programcard a{margin-top:auto;color:var(--accent);font-weight:850;font-size:13px}.pathline{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:18px 0}.pathstep{background:#f2f3f7;border-radius:999px;padding:7px 10px;font-size:11px;font-weight:800}.patharrow{color:#a4a9b5}.modulepage{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:28px;padding-bottom:80px}.modulecontent{background:#fff;border:1px solid var(--line);border-radius:24px;padding:34px}.lessonsection{padding:30px 0;border-top:1px solid var(--line)}.lessonsection:first-of-type{border-top:0}.lessonsection h2{font-size:27px;letter-spacing:-.03em;margin:7px 0 14px}.lessonsection p{color:#454b5c}.probox{background:#f5f3ff;border-inline-start:4px solid var(--accent);padding:16px 18px;border-radius:13px;margin:18px 0}.worked{background:#12141d;color:#f6f7fb;border-radius:15px;padding:18px;white-space:pre-wrap;font:13px/1.65 Consolas,monospace;direction:ltr;text-align:left}.practicebox{background:#f7f8fb;border:1px solid var(--line);border-radius:15px;padding:18px;margin:17px 0}.lessonactions{display:flex;justify-content:flex-end}.labbox,.quizbox{margin-top:28px;padding:24px;border-radius:18px;border:1px solid var(--line);background:#fbfbfd}.labbox ol{padding-inline-start:22px}.quizq{padding:14px 0;border-top:1px solid var(--line)}.quizq:first-of-type{border-top:0}.quizq label{display:block;padding:5px 0;font-size:13px}.programhero{padding:64px 0 40px}.programhero h1{font-size:clamp(44px,5vw,64px)}.programstats{display:flex;gap:18px;flex-wrap:wrap;margin-top:20px}.programstats div{background:#fff;border:1px solid var(--line);border-radius:14px;padding:11px 14px;min-width:120px}.programstats strong{display:block;font-size:20px}.programstats span{font-size:10px;color:var(--muted)}.roadmap-table{width:100%;border-collapse:collapse;background:#fff;border-radius:18px;overflow:hidden}.roadmap-table th,.roadmap-table td{padding:11px 12px;border-bottom:1px solid var(--line);text-align:start;font-size:12px}.roadmap-table th{background:#f4f5f8;font-size:10px;text-transform:uppercase;letter-spacing:.06em}.qualitybadge{font-size:10px;font-weight:900;border-radius:999px;padding:5px 8px;background:#eaf8f1;color:#147a55}@media(max-width:900px){.programgrid{grid-template-columns:repeat(2,1fr)}.modulepage{grid-template-columns:1fr}}@media(max-width:600px){.programgrid{grid-template-columns:1fr}.modulecontent{padding:22px}}

.catalog-stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}.catalog-stats div{padding:20px;text-align:center}.catalog-stats strong{display:block;font-size:24px}.catalog-stats span{font-size:11px;color:var(--muted)}.programgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.programcard{background:#fff;border:1px solid var(--line);border-radius:21px;padding:20px;display:flex;flex-direction:column;min-height:255px}.programcard h3{font-size:21px;line-height:1.13;margin:13px 0 8px}.programcard p{font-size:12.5px;color:var(--muted)}.programcard a{margin-top:auto;color:var(--accent);font-size:12px;font-weight:850}.pathline{display:flex;gap:7px;flex-wrap:wrap;align-items:center;margin:14px 0}.pathstep{font-size:10px;font-weight:900;padding:6px 8px;border-radius:999px;background:#f1f2f7}.programhero{padding:60px 0 34px}.programhero h1{font-size:clamp(42px,5vw,64px)}.modulepage{display:grid;grid-template-columns:minmax(0,1fr) 275px;gap:26px;padding-bottom:70px}.modulecontent{background:#fff;border:1px solid var(--line);border-radius:23px;padding:32px}.lessonsection{border-top:1px solid var(--line);padding:28px 0}.lessonsection:first-child{border-top:0}.lessonsection h2{font-size:27px;letter-spacing:-.03em}.probox{background:#f4f2ff;border-inline-start:4px solid var(--accent);border-radius:13px;padding:16px 18px;margin:17px 0}.worked{background:#11131d;color:#f5f6fb;border-radius:15px;padding:17px;white-space:pre-wrap;font:13px/1.6 Consolas,monospace;direction:ltr;text-align:left}.practicebox{background:#f7f8fb;border:1px solid var(--line);border-radius:14px;padding:17px;margin:16px 0}.labbox,.assessmentbox{border:1px solid var(--line);border-radius:18px;padding:22px;margin-top:25px;background:#fbfbfd}.lessonactions{display:flex;justify-content:flex-end}.quality{display:inline-flex;align-items:center;gap:6px;font-size:10px;font-weight:900;color:#117650;background:#eaf8f1;border-radius:999px;padding:6px 8px}.domainchips{display:flex;gap:8px;overflow:auto;padding-bottom:8px}.domainchip{white-space:nowrap;border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 11px;font-size:11px;font-weight:800;cursor:pointer}.domainchip.active{background:var(--accent);color:#fff;border-color:var(--accent)}@media(max-width:900px){.programgrid{grid-template-columns:repeat(2,1fr)}.modulepage{grid-template-columns:1fr}.catalog-stats{grid-template-columns:repeat(2,1fr)}}@media(max-width:600px){.programgrid{grid-template-columns:1fr}.modulecontent{padding:21px}}

.lessonpage{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:28px;padding-bottom:80px}.lessonarticle{background:#fff;border:1px solid var(--line);border-radius:24px;padding:38px}.lessonarticle h2{font-size:28px;letter-spacing:-.025em;margin-top:38px}.lessonarticle p,.lessonarticle li{color:#444b5b}.objectives{background:#f7f8fb;border:1px solid var(--line);border-radius:16px;padding:18px}.takeaway{background:#f1efff;border-radius:16px;padding:18px;margin:24px 0}.deep-section{padding-top:10px}.lessonaside{position:sticky;top:90px;align-self:start;background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px}.lessonaside a{display:block;padding:5px 0;font-size:12px;color:var(--muted)}.lessonword{font-size:11px;color:var(--muted)}details{border:1px solid var(--line);border-radius:13px;padding:13px 15px;background:#fbfbfd}summary{cursor:pointer}.module-intro{max-width:820px;color:var(--muted)}@media(max-width:900px){.lessonpage{grid-template-columns:1fr}.lessonaside{position:static}}
.adaptive-actions{max-width:1180px;margin:0 auto 22px;padding:0 24px}.adaptive-actions .btn{font-size:12px}.gate{border:1px solid #f0cf7b;background:#fff9e8;border-radius:14px;padding:15px}.mastery-meter{height:10px;background:#eceef3;border-radius:999px;overflow:hidden}.mastery-meter span{display:block;height:100%;background:var(--accent)}@media(max-width:600px){.adaptive-actions{padding:0 16px;display:grid;grid-template-columns:1fr 1fr}.adaptive-actions .btn{width:100%}}