:root {
  --black:#000;--panel:#09090b;--panel-2:#111113;--panel-3:#18181b;--white:#fff;--muted:#a1a1aa;--dim:#71717a;--line:#27272a;--line-soft:#18181b;--success:#34d399;--danger:#f87171;--radius:14px;
  font-family:"Inter",system-ui,sans-serif;color:var(--white);background:var(--black);font-synthesis:none
}
*{box-sizing:border-box}html{scroll-behavior:smooth;background:#000}body{margin:0;min-width:320px;overflow-x:hidden;background:#000;color:#fff}button,input,textarea,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-decoration:none}::selection{color:#000;background:#fff}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:#09090b}::-webkit-scrollbar-thumb{background:#3f3f46;border-radius:10px}.noise{position:fixed;inset:0;z-index:50;pointer-events:none;opacity:.018;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
.site-header{position:sticky;top:0;z-index:40;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;min-height:66px;padding:0 max(18px,calc((100vw - 1280px)/2));border-bottom:1px solid rgba(63,63,70,.7);background:rgba(0,0,0,.9);backdrop-filter:blur(18px)}.brand{display:inline-flex;align-items:center;gap:12px;width:max-content}.brand-mark{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:9px;color:#000;background:#fff;font:800 13px/1 "JetBrains Mono",monospace;letter-spacing:-.08em;box-shadow:0 4px 18px rgba(255,255,255,.08)}.brand-copy{display:flex;flex-direction:column;gap:3px}.brand-copy strong{font:700 14px/1.2 "JetBrains Mono",monospace;letter-spacing:-.03em}.brand-copy small{color:var(--dim);font:500 9px/1 "JetBrains Mono",monospace;letter-spacing:.08em}.main-nav{display:flex;gap:28px;color:var(--muted);font:500 12px/1 "JetBrains Mono",monospace}.main-nav a:hover{color:#fff}.header-action{justify-self:end;display:inline-flex;align-items:center;gap:8px;min-height:38px;padding:0 14px;border:1px solid var(--line);border-radius:9px;color:#d4d4d8;background:#101012;font:600 12px/1 "JetBrains Mono",monospace;transition:.2s}.header-action:hover{border-color:#52525b;color:#fff;background:var(--panel-3)}.container{width:min(1240px,calc(100% - 36px));margin-inline:auto}main{min-height:76vh}
.hero{position:relative;display:grid;place-items:center;min-height:560px;padding:80px 18px 70px;overflow:hidden;border-bottom:1px solid var(--line-soft);text-align:center}.network-canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.78}.hero:after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% 38%,transparent 0,rgba(0,0,0,.58) 48%,#000 87%);pointer-events:none}.hero-content{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;width:min(850px,100%)}.eyebrow-badge{display:inline-flex;align-items:center;gap:9px;padding:7px 12px;border:1px solid var(--line);border-radius:999px;color:var(--muted);background:rgba(9,9,11,.82);backdrop-filter:blur(10px);font:500 11px/1 "JetBrains Mono",monospace}.live-dot{width:7px;height:7px;border-radius:50%;background:var(--success);box-shadow:0 0 14px rgba(52,211,153,.7)}.hero h1{max-width:800px;margin:23px 0 0;font-size:clamp(42px,7vw,76px);line-height:1.04;letter-spacing:-.06em}.hero h1 span{color:#c5c5ca}.hero-subtitle{max-width:680px;margin:20px auto 0;color:var(--muted);font-size:clamp(15px,2vw,18px);line-height:1.7}.search-panel{display:grid;grid-template-columns:1fr auto;gap:10px;width:min(600px,100%);margin-top:34px}.search-wrap{position:relative}.search-wrap:before{content:">_";position:absolute;left:15px;top:50%;transform:translateY(-50%);color:#71717a;font:600 13px "JetBrains Mono",monospace;pointer-events:none}.search-wrap input{width:100%;min-height:48px;padding:0 16px 0 48px;border:1px solid var(--line);border-radius:10px;outline:0;color:#fff;background:rgba(9,9,11,.92);font:500 13px "JetBrains Mono",monospace;transition:.2s}.search-wrap input:focus{border-color:#a1a1aa;box-shadow:0 0 0 3px rgba(255,255,255,.06)}
.primary-button,.secondary-button,.icon-button,.filter-button,.play-button{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:9px;font-weight:650;transition:transform .18s,border-color .18s,background .18s,color .18s}.primary-button{min-height:46px;padding:0 18px;border-color:#fff;color:#000;background:#fff}.primary-button:hover{transform:translateY(-1px);background:#e4e4e7}.primary-button:disabled{opacity:.55;cursor:wait;transform:none}.secondary-button{min-height:42px;padding:0 15px;color:#d4d4d8;background:var(--panel-2)}.secondary-button:hover{border-color:#52525b;color:#fff;background:var(--panel-3)}.filter-row{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:20px}.filter-button{min-height:34px;padding:0 13px;color:var(--muted);background:rgba(9,9,11,.75);font:600 11px "JetBrains Mono",monospace}.filter-button.active,.filter-button:hover{border-color:#fff;color:#000;background:#fff}
.section{padding:76px 0 110px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:34px;padding-bottom:20px;border-bottom:1px solid var(--line)}.section-label{margin:0 0 8px;color:var(--muted);font:500 11px/1.4 "JetBrains Mono",monospace;letter-spacing:.08em;text-transform:uppercase}.section-head h2{margin:0;font:700 clamp(27px,4vw,38px)/1.15 "JetBrains Mono",monospace;letter-spacing:-.045em}.catalog-count{color:var(--dim);font:500 11px "JetBrains Mono",monospace}.course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.course-card{position:relative;display:flex;min-height:360px;flex-direction:column;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);box-shadow:0 4px 24px rgba(0,0,0,.3);transition:transform .25s,border-color .25s,box-shadow .25s}.course-card:hover{transform:translateY(-5px);border-color:#52525b;box-shadow:0 22px 50px rgba(255,255,255,.04)}.course-visual{position:relative;display:flex;min-height:150px;align-items:end;justify-content:space-between;padding:22px;overflow:hidden;border-bottom:1px solid var(--line);background:radial-gradient(circle at 70% 20%,#252529 0,#111113 38%,#08080a 75%)}.course-visual:before{content:"";position:absolute;inset:0;opacity:.28;background-image:linear-gradient(rgba(255,255,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.08) 1px,transparent 1px);background-size:28px 28px;mask-image:linear-gradient(to top,#000,transparent)}.course-code{position:relative;color:#d4d4d8;font:700 clamp(34px,4vw,50px)/1 "JetBrains Mono",monospace;letter-spacing:-.08em}.course-category{position:relative;align-self:flex-start;padding:6px 9px;border-radius:7px;color:#000;background:#fff;font:700 10px "JetBrains Mono",monospace}.course-body{display:flex;flex:1;flex-direction:column;padding:22px}.course-card h3{margin:0;font-size:19px;line-height:1.35;letter-spacing:-.025em}.course-card p{margin:10px 0 0;color:var(--muted);font-size:13px;line-height:1.65}.course-meta{display:flex;justify-content:space-between;gap:12px;margin-top:auto;padding-top:20px;color:#a1a1aa;font:500 10px "JetBrains Mono",monospace}.course-cta{display:flex;justify-content:space-between;align-items:center;margin-top:18px;padding-top:15px;border-top:1px solid var(--line-soft);color:#e4e4e7;font-size:12px;font-weight:650}.course-card:hover .course-cta span:last-child{transform:translateX(4px)}.course-cta span:last-child{transition:transform .2s}.empty-state{grid-column:1/-1;padding:60px 24px;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);text-align:center}.empty-state h3{margin:0 0 10px;font:700 21px "JetBrains Mono",monospace}.empty-state p{margin:0 0 22px;color:var(--muted);line-height:1.6}
.page-head{padding:70px 0 44px;border-bottom:1px solid var(--line);background:radial-gradient(circle at 75% 0,#151518 0,#000 45%)}.breadcrumb{color:var(--muted);font:500 11px "JetBrains Mono",monospace}.page-head h1{max-width:850px;margin:24px 0 16px;font-size:clamp(36px,6vw,68px);line-height:1.06;letter-spacing:-.055em}.page-head p{max-width:740px;margin:0;color:var(--muted);font-size:16px;line-height:1.75}.course-layout{display:grid;grid-template-columns:1fr 330px;gap:50px;padding-block:56px 100px}.lesson-list{border-top:1px solid var(--line)}.lesson-item{display:grid;grid-template-columns:44px 1fr auto;align-items:center;gap:18px;padding:20px 0;border-bottom:1px solid var(--line-soft)}.lesson-item>span{color:var(--dim);font:500 11px "JetBrains Mono",monospace}.lesson-item h3{margin:0 0 7px;font-size:16px}.lesson-item p{margin:0;color:var(--dim);font-size:13px}.play-button{width:42px;height:42px;color:#fff;background:var(--panel-2)}.play-button:hover{border-color:#fff;color:#000;background:#fff}.course-aside{position:sticky;top:92px;height:max-content;padding:24px;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel)}.course-aside strong{display:block;margin-bottom:18px;font:700 20px "JetBrains Mono",monospace}.course-aside dl{margin:0}.course-aside div{display:flex;justify-content:space-between;gap:18px;padding:14px 0;border-top:1px solid var(--line-soft);font-size:13px}.course-aside dt{color:var(--dim)}.course-aside dd{margin:0;text-align:right}.lesson-view{padding:42px 0 90px}.video-shell{overflow:hidden;aspect-ratio:16/9;border:1px solid var(--line);border-radius:var(--radius);background:#050505;box-shadow:0 24px 80px rgba(0,0,0,.5)}.video-shell iframe{width:100%;height:100%;border:0}.video-placeholder{display:grid;place-items:center;height:100%;padding:30px;color:var(--dim);text-align:center}.lesson-copy{display:grid;grid-template-columns:1.2fr .8fr;gap:38px;margin-top:38px}.lesson-copy h2{margin:0 0 15px;font:700 22px "JetBrains Mono",monospace}.lesson-copy p{margin:0;white-space:pre-wrap;color:var(--muted);line-height:1.75}.homework-box{padding:25px;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel)}.homework-box .section-label{margin-bottom:13px}
.admin-shell{display:grid;grid-template-columns:245px 1fr;min-height:calc(100vh - 66px)}.admin-sidebar{padding:30px 20px;border-right:1px solid var(--line);background:#050505}.admin-sidebar h2{margin:0 0 26px;font:700 15px "JetBrains Mono",monospace}.cloud-status{display:flex;align-items:center;gap:8px;margin-bottom:24px;color:var(--dim);font:500 10px "JetBrains Mono",monospace}.admin-nav{display:grid;gap:5px}.admin-nav button{min-height:42px;padding:0 13px;border:0;border-radius:8px;color:var(--muted);background:transparent;text-align:left;font-size:12px}.admin-nav button.active,.admin-nav button:hover{color:#fff;background:var(--panel-3)}.admin-main{min-width:0;padding:clamp(26px,5vw,58px)}.admin-head{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:28px}.admin-head h1{margin:0;font:700 clamp(30px,4vw,46px) "JetBrains Mono",monospace;letter-spacing:-.06em}.admin-actions{display:flex;flex-wrap:wrap;gap:9px}.admin-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:30px}.admin-stat{padding:20px;border:1px solid var(--line);border-radius:11px;background:var(--panel)}.admin-stat strong{display:block;font:700 30px "JetBrains Mono",monospace}.admin-stat span{color:var(--dim);font-size:11px}.admin-list{overflow:hidden;border:1px solid var(--line);border-radius:12px;background:var(--panel)}.admin-row{display:grid;grid-template-columns:42px minmax(180px,1fr) 100px 100px auto;align-items:center;gap:12px;padding:16px 18px;border-bottom:1px solid var(--line-soft)}.admin-row:last-child{border-bottom:0}.admin-row-title{font-size:13px;font-weight:650}.admin-row small{color:var(--dim);font:500 10px "JetBrains Mono",monospace}.row-actions{display:flex;justify-content:flex-end;gap:7px}.icon-button{width:36px;height:36px;color:#d4d4d8;background:var(--panel-2)}.icon-button:hover{border-color:#fff;color:#000;background:#fff}.icon-button.danger:hover{border-color:var(--danger);color:#fff;background:#991b1b}.status{color:#d4d4d8;font:500 10px "JetBrains Mono",monospace}.status:before{content:"";display:inline-block;width:7px;height:7px;margin-right:7px;border-radius:50%;background:var(--success)}.status.draft:before{background:#fbbf24}
.modal-backdrop{position:fixed;inset:0;z-index:80;display:grid;place-items:center;padding:18px;background:rgba(0,0,0,.84);backdrop-filter:blur(8px)}.modal{width:min(760px,100%);max-height:calc(100vh - 36px);overflow:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);box-shadow:0 24px 90px #000}.modal-head{position:sticky;top:0;z-index:2;display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--line);background:rgba(9,9,11,.95);backdrop-filter:blur(12px)}.modal-head h2{margin:0;font:700 20px "JetBrains Mono",monospace}.modal-close{border:0;color:var(--muted);background:transparent;font-size:25px}.form{display:grid;gap:18px;padding:24px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.field{display:grid;gap:8px}.field label{color:#d4d4d8;font:500 11px "JetBrains Mono",monospace}.field input,.field textarea,.field select{width:100%;min-height:46px;padding:11px 13px;border:1px solid var(--line);border-radius:9px;outline:0;color:#fff;background:#050505}.field textarea{min-height:105px;resize:vertical;line-height:1.6}.field input:focus,.field textarea:focus,.field select:focus{border-color:#a1a1aa;box-shadow:0 0 0 3px rgba(255,255,255,.05)}.field-hint{color:var(--dim);font-size:11px;line-height:1.5}.form-actions{display:flex;justify-content:flex-end;gap:10px;padding-top:6px}.login-wrap{display:grid;place-items:center;min-height:calc(100vh - 66px);padding:50px 18px;background:radial-gradient(circle at 50% 25%,#18181b,#000 48%)}.login-card{width:min(440px,100%);padding:30px;border:1px solid var(--line);border-radius:16px;background:rgba(9,9,11,.92);box-shadow:0 25px 80px #000}.login-card h1{margin:12px 0 9px;font:700 31px "JetBrains Mono",monospace;letter-spacing:-.055em}.login-card>p{margin:0 0 24px;color:var(--muted);font-size:13px;line-height:1.6}.login-card .primary-button{width:100%;margin-top:6px}.data-note{padding:16px;border:1px solid var(--line);border-radius:10px;color:var(--muted);background:var(--panel);font-size:12px;line-height:1.6}.loading-screen{display:grid;place-items:center;min-height:65vh;color:var(--dim);font:500 12px "JetBrains Mono",monospace}.loading-screen:before{content:"";width:24px;height:24px;margin-right:12px;border:2px solid #27272a;border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.toast{position:fixed;right:22px;bottom:22px;z-index:100;max-width:min(400px,calc(100% - 44px));padding:14px 17px;border:1px solid #3f3f46;border-radius:9px;color:#fff;background:#18181b;box-shadow:0 18px 50px #000;opacity:0;transform:translateY(12px);pointer-events:none;transition:.23s;font-size:13px}.toast.show{opacity:1;transform:translateY(0)}.site-footer{display:grid;grid-template-columns:1fr auto auto;align-items:end;gap:60px;padding:45px max(18px,calc((100vw - 1280px)/2));border-top:1px solid var(--line);background:#050505}.site-footer p{margin:14px 0 0;color:var(--dim);font-size:12px}.footer-links{display:flex;gap:24px;color:var(--muted);font:500 11px "JetBrains Mono",monospace}.footer-links a:hover{color:#fff}.copyright{font-family:"JetBrains Mono",monospace}
@media(max-width:980px){.course-grid{grid-template-columns:repeat(2,1fr)}.course-layout{grid-template-columns:1fr}.course-aside{position:static}.admin-shell{grid-template-columns:1fr}.admin-sidebar{padding:16px 18px;border-right:0;border-bottom:1px solid var(--line)}.admin-sidebar h2,.cloud-status{margin-bottom:12px}.admin-nav{display:flex;overflow-x:auto}.admin-nav button{white-space:nowrap}}
@media(max-width:700px){.site-header{grid-template-columns:1fr auto;min-height:62px}.main-nav{display:none}.brand-copy strong{font-size:12px}.brand-copy small{display:none}.hero{min-height:510px;padding-top:66px}.hero h1{font-size:clamp(38px,12vw,58px)}.search-panel{grid-template-columns:1fr}.course-grid{grid-template-columns:1fr}.section{padding-top:58px}.section-head{align-items:start;flex-direction:column}.catalog-count{order:-1}.lesson-copy{grid-template-columns:1fr}.lesson-item{grid-template-columns:34px 1fr auto}.lesson-item p{display:none}.admin-main{padding-inline:18px}.admin-head{align-items:stretch;flex-direction:column}.admin-stats{grid-template-columns:1fr}.admin-row{grid-template-columns:28px 1fr auto;padding-inline:12px}.admin-row>:nth-child(3),.admin-row>:nth-child(4){display:none}.form-grid{grid-template-columns:1fr}.site-footer{grid-template-columns:1fr;gap:24px}.footer-links{flex-direction:column;gap:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition-duration:.01ms!important;animation-duration:.01ms!important}.network-canvas{display:none}}
.course-cover{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.course-visual.has-cover:before{z-index:1;opacity:1;background:linear-gradient(180deg,rgba(0,0,0,.08),rgba(0,0,0,.72));mask-image:none}.course-visual.has-cover .course-code{opacity:.8;text-shadow:0 2px 18px #000}.course-code,.course-category{z-index:2}.course-cover-large{display:block;width:100%;aspect-ratio:16/9;margin:0 0 22px;border-radius:9px;object-fit:cover}.cover-editor{display:grid;grid-template-columns:180px 1fr;align-items:center;gap:16px}.cover-preview{display:grid;aspect-ratio:16/9;place-items:center;overflow:hidden;border:1px dashed var(--line);border-radius:9px;color:var(--dim);background:#050505;font-size:11px}.cover-preview.has-image{border-style:solid}.cover-preview img{width:100%;height:100%;object-fit:cover}.check-row{display:flex!important;align-items:center;gap:8px;margin-top:12px}.check-row input{width:16px!important;min-height:16px!important}.video-source-link{display:block;width:max-content;margin:12px 0 0;color:var(--muted);font:500 11px "JetBrains Mono",monospace;text-decoration:underline;text-underline-offset:4px}.video-source-link:hover{color:#fff}@media(max-width:640px){.cover-editor{grid-template-columns:1fr}.cover-preview{max-width:260px}}