:root{color-scheme:dark;font-family:Arial,Helvetica,sans-serif;color:#f4f5f7;background:#080a0c;font-synthesis:none;line-height:1.5;--muted:#969ca5;--red:#ff294d;--line:rgba(255,255,255,.09)}
*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}a{color:inherit;text-decoration:none}button,a,input,textarea,select{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:wait;opacity:.55}button,input,textarea,select,.button{border:1px solid var(--line);border-radius:6px;background:#111519;color:inherit;padding:10px 14px;min-height:44px}button:hover,a.button:hover{border-color:#969ca5}button.primary,.button.primary{background:#e51e40;border-color:#e51e40;color:white;font-weight:700}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid 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12px;min-height:44px;color:#b8bdc5;border-radius:6px;font-size:14px}.sidebar nav a[aria-current=page]{background:#ff294d15;color:#ff5370;border-left:2px solid var(--red)}.sidebar footer{margin-top:auto;font-size:13px;color:var(--muted)}.main{min-width:0}.topbar{min-height:80px;display:flex;align-items:center;gap:16px;border-bottom:1px solid var(--line);padding:16px 32px;background:#080a0c}.search{display:flex;gap:8px;flex:1;max-width:600px}.topbar .account{margin-left:auto}.account{display:flex;align-items:center;gap:10px}.avatar{width:32px;height:32px;border-radius:50%}.content{max-width:1400px;padding:32px;margin:auto}.section-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:24px}.section-head h1,.section-head h2{margin:0}.kicker{text-transform:uppercase;color:#ff5370;font-size:11px;font-weight:700;letter-spacing:1px;margin-bottom:10px}.catalog-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.content-card{background:#0d1013;border:1px solid var(--line);border-radius:8px;overflow:hidden;min-width:0;display:flex;flex-direction:column}.content-card .cover{display:block;aspect-ratio:16/9;width:100%;background:#111519;object-fit:cover}.cover-fallback{aspect-ratio:16/9;display:grid;place-items:center;background:#15191e;color:#c9cdd2;font-size:19px;border-bottom:1px solid var(--line)}.card-body{padding:18px;display:grid;gap:10px;flex:1}.card-body h3{margin:0}.card-meta{font-size:12px;color:var(--muted)}.price{font-size:14px;font-weight:700;margin-top:auto}.pill{display:inline-flex;align-items:center;min-height:26px;font-size:11px;background:#162b22;color:#a4d6b9;padding:3px 8px;border-radius:4px}.filters{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:28px}.empty{padding:48px 20px;border-block:1px solid var(--line);text-align:center;color:var(--muted)}.empty h2{color:#f4f5f7}.stack{display:grid;gap:24px}.band{padding-bottom:32px;margin-bottom:32px;border-bottom:1px solid var(--line)}.intro{padding:16px 0 30px}.intro h1{font-size:36px;max-width:640px}.intro p{max-width:600px;color:var(--muted)}.detail-grid{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:32px}.detail-cover{width:100%;max-height:430px;aspect-ratio:16/9;border-radius:8px}.purchase{border:1px solid var(--line);background:#0d1013;border-radius:8px;padding:22px;align-self:start;position:sticky;top:24px;display:grid;gap:14px}.purchase button{width:100%}.prose{overflow-wrap:anywhere;max-width:800px}.prose img{height:auto}.prose a{text-decoration:underline}.prose iframe{max-width:100%}.prose video,video{width:100%;max-height:540px;background:black}.prose pre{white-space:pre-wrap}.file-row,.row{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:16px 0;border-bottom:1px solid var(--line);min-width:0}.row>div{min-width:0}.row h3{margin:0;overflow-wrap:anywhere}.actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.tabs{display:flex;gap:6px;overflow:auto;scrollbar-width:none;margin-bottom:26px;padding:4px}.tabs::-webkit-scrollbar{display:none}.tabs a{white-space:nowrap;padding:10px 14px;min-height:44px;border-bottom:2px solid transparent}.tabs a[aria-current=page]{border-color:var(--red)}.editor-wrap{max-width:900px}.editor-wrap .ql-container{min-height:220px;font:inherit}.editor-wrap .ql-toolbar{background:#d9dce0;border-radius:6px 6px 0 0}.editor-wrap .ql-container{border-color:var(--line)}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:16px}.comment{padding:18px 0;border-bottom:1px solid var(--line)}.comment p{white-space:pre-wrap;overflow-wrap:anywhere;margin:8px 0}.comment.reply{margin-left:24px;border-left:2px solid var(--line);padding-left:16px}.comment button{font-size:12px;background:none}.login{max-width:440px;margin:40px auto}.mobile-menu{display:none}#notice:not(:empty){position:fixed;bottom:22px;right:22px;max-width:min(440px,calc(100vw - 32px));background:#22292f;padding:14px 20px;border:1px solid #656d78;border-radius:6px;z-index:100;box-shadow:0 8px 30px #0008}.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.metric{padding:20px;border:1px solid var(--line);border-radius:6px;background:#0d1013}.metric strong{display:block;font-size:26px;margin-top:8px}.lesson-grid{display:grid;grid-template-columns:230px minmax(0,1fr);gap:24px}.lesson-nav{display:grid;gap:8px;align-content:start}.lesson-nav button{text-align:left}.lesson-nav button[aria-current=true]{border-color:var(--red)}.progress{width:100%;accent-color:var(--red)}.table-scroll{overflow:auto}table{width:100%;border-collapse:collapse;font-size:14px}th,td{padding:12px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}.error{color:#ffabb9}dialog{background:#111519;color:#f4f5f7;border:1px solid var(--line);border-radius:8px;padding:24px;max-width:calc(100vw - 24px);width:460px}dialog::backdrop{background:#000b}dialog h2{font-size:20px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(min-width:1600px){.catalog-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media(max-width:1199px){.layout{grid-template-columns:190px minmax(0,1fr)}.sidebar{padding:24px 14px}.content{padding:24px}.topbar{padding:16px 24px}.catalog-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.detail-grid{grid-template-columns:minmax(0,1fr)}.purchase{position:static}.filters{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:767px){.layout{display:block}.sidebar{display:none;position:fixed;width:min(290px,85vw);z-index:50;box-shadow:12px 0 80px #000c}.sidebar.open{display:flex}.mobile-menu{display:block}.topbar{padding:12px 16px;gap:8px;flex-wrap:wrap}.topbar .search{order:3;flex-basis:100%;max-width:none}.content{padding:24px 16px 40px}.intro h1{font-size:28px}.catalog-grid{gap:14px}.card-body{padding:14px}.card-body h3{font-size:16px}.section-head{align-items:flex-start}h1{font-size:26px}.two-col,.lesson-grid{grid-template-columns:1fr}.metrics{grid-template-columns:1fr}.lesson-nav{max-height:220px;overflow:auto}.account span{max-width:110px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.filters{gap:10px}.row{align-items:flex-start;flex-wrap:wrap}.purchase{padding:18px}.detail-grid{gap:20px}.mobile-label{font-size:14px}.login{margin:16px auto}}
@media(max-width:430px){.catalog-grid{grid-template-columns:1fr}.filters{grid-template-columns:1fr}.brand{font-size:20px}}
@media(prefers-reduced-motion:no-preference){button,a{transition:background-color .15s,border-color .15s}}