@font-face{font-family:Montserrat;src:url(/fonts/Montserrat-SemiBold.woff2)format("woff2");font-weight:600;font-display:swap}@font-face{font-family:Montserrat;src:url(/fonts/Montserrat-Bold.woff2)format("woff2");font-weight:700;font-display:swap}@font-face{font-family:Montserrat;src:url(/fonts/Montserrat-ExtraBold.woff2)format("woff2");font-weight:800;font-display:swap}@font-face{font-family:Aptos;src:url(/fonts/Aptos.woff2)format("woff2");font-weight:400;font-display:swap}@font-face{font-family:Aptos;src:url(/fonts/Aptos-SemiBold.woff2)format("woff2");font-weight:600;font-display:swap}@font-face{font-family:Aptos;src:url(/fonts/Aptos-Bold.woff2)format("woff2");font-weight:700;font-display:swap}:root{--bg:#020617;--bg-secondary:#0f172a;--bg-card:#1e293b;--bg-elevated:#0f172a;--bg-hover:#334155;--glass:#1e293b99;--border:#334155;--border-hover:#475569;--text:#fff;--text-secondary:#e2e8f0;--text-muted:#cbd5e1;--text-dim:#94a3b8;--accent:#f6571e;--accent-text:#ff912c;--accent-soft:#f6571e1a;--accent-border:#f6571e4d;--radius-sm:.5rem;--radius-md:.75rem;--radius:1rem;--radius-xl:1.5rem;--shadow-lg:0 1.5rem 4rem #00000047, 0 .5rem 1rem #00000029;--focus:0 0 0 3px #f6571e80;--font-heading:"Montserrat", "Segoe UI", sans-serif;--font-body:"Aptos", "Segoe UI", sans-serif}*{box-sizing:border-box}body{background:radial-gradient(60rem 30rem at 85% -10%, #f6571e1a, transparent 60%), var(--bg);color:var(--text);font-family:var(--font-body);background-attachment:fixed;margin:0;font-size:1rem;line-height:1.55}h1,h2,h3,h4{font-family:var(--font-heading);color:var(--text);line-height:1.2}h1{letter-spacing:-.01em;margin:0 0 .75rem;font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800}h2{font-size:1.25rem;font-weight:700}h3{font-size:1rem;font-weight:700}a{color:var(--accent-text);text-decoration:none}a:hover{text-decoration:underline}:focus-visible{box-shadow:var(--focus);border-radius:var(--radius-sm);outline:none}.shell{max-width:75rem;margin:0 auto;padding:0 1.5rem 5rem}.topbar{z-index:20;-webkit-backdrop-filter:blur(12px);border-bottom:.0625rem solid var(--border);background:#020617;justify-content:space-between;align-items:center;gap:1rem;margin:0 -1.25rem 2rem;padding:.9rem 1.25rem;display:flex;position:sticky;top:0}.topbar .brand{font-family:var(--font-heading);color:var(--text);align-items:center;gap:.6rem;font-weight:700;display:flex}.topbar .brand span{color:var(--accent)}.topbar .brand:hover{text-decoration:none}.topbar nav a{color:var(--text-muted)}.topbar nav a:hover{color:var(--text);text-decoration:none}.brand-logo{width:auto;height:2rem}.topbar button{border:.0625rem solid var(--border);color:var(--text-secondary);border-radius:var(--radius-sm);cursor:pointer;min-height:2.75rem;font-family:var(--font-heading);background:0 0;padding:.5rem 1rem;font-weight:600}.topbar button:hover{background:var(--bg-card);border-color:var(--border-hover)}.topbar-actions{align-items:center;gap:.75rem;display:flex}.newsletter-toggle{color:var(--text-secondary);white-space:nowrap;align-items:center;gap:.5rem;font-size:.875rem;display:inline-flex}.newsletter-toggle input{width:1rem;height:1rem;accent-color:var(--accent)}.newsletter-toggle input:disabled{cursor:default}.newsletter-error{margin:-1rem 0 1.5rem}.ud-hero{padding:2.5rem 0 1.5rem}.ud-eyebrow{font-family:var(--font-heading);letter-spacing:.12em;text-transform:uppercase;color:var(--accent-text);margin:0 0 .75rem;font-size:.8rem;font-weight:700}.gradient-text{background:linear-gradient(135deg,#f6571e 0%,#ff912c 100%);color:#0000;-webkit-background-clip:text;background-clip:text}.ud-hero-lead{color:var(--text-muted);max-width:48rem;margin:0 0 1.25rem;font-size:1.1rem}.ud-hero-tags{flex-wrap:wrap;gap:.6rem;display:flex}.ud-hero-tags span{background:var(--glass);border:.0625rem solid var(--border);color:var(--text-secondary);-webkit-backdrop-filter:blur(12px);border-radius:20rem;padding:.35rem .9rem;font-size:.85rem;font-weight:600}.section-title{letter-spacing:.08em;text-transform:uppercase;color:var(--text-dim);margin:2.5rem 0 1rem;font-size:.8rem;font-weight:700}.login-card{background:var(--glass);-webkit-backdrop-filter:blur(12px);border:.0625rem solid var(--border);border-radius:var(--radius-xl);max-width:28rem;box-shadow:var(--shadow-lg);margin:5rem auto;padding:2.25rem}.login-card h1{margin-top:0;font-size:1.5rem}.login-logo{width:auto;height:3rem;margin:0 auto 1.25rem;display:block}.login-card input,.login-card.modal textarea{border-radius:var(--radius-sm);border:.0625rem solid var(--border);background:var(--bg-secondary);width:100%;color:var(--text);font-size:1rem;font-family:var(--font-body);margin:.75rem 0;padding:.8rem 1rem}.login-card input:focus,.login-card.modal textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);outline:none}.login-card.modal textarea{resize:vertical}.btn{background:var(--accent);color:#0c1115;border-radius:var(--radius-sm);font-family:var(--font-heading);cursor:pointer;border:none;justify-content:center;align-items:center;gap:.5rem;min-height:2.75rem;padding:.75rem 1.5rem;font-size:.95rem;font-weight:600;text-decoration:none;transition:background .15s,transform .15s;display:inline-flex;box-shadow:0 .5rem 1.5rem #f6571e40}.btn:hover{background:var(--accent-text);text-decoration:none;transform:translateY(-.0625rem)}.btn:disabled{opacity:.6;cursor:default;transform:none}.hint{color:var(--text-muted);font-size:.9rem}.notice{background:var(--accent-soft);border:.0625rem solid var(--accent-border);border-radius:var(--radius-md);color:var(--text-secondary);margin:1rem 0;padding:.75rem 1rem}.course-grid{grid-template-columns:repeat(auto-fill,minmax(19rem,1fr));gap:1.5rem;display:grid}.course-card{background:var(--glass);-webkit-backdrop-filter:blur(12px);border:.0625rem solid var(--border);border-radius:var(--radius-xl);cursor:pointer;transition:transform .2s,border-color .2s,box-shadow .2s;overflow:hidden}.course-card:hover{border-color:var(--accent-border);box-shadow:var(--shadow-lg);transform:translateY(-.25rem)}.course-card.premium{border-color:var(--accent-border);box-shadow:0 0 0 .0625rem #f6571e1f, var(--shadow-lg)}.course-card.premium:hover{border-color:var(--accent)}.course-card.locked .course-cover{filter:saturate(.75)}.cover-wrap{position:relative}.cover-chip{border:.0625rem solid var(--accent-border);color:var(--accent-text);font-family:var(--font-heading);-webkit-backdrop-filter:blur(8px);background:#020617cc;border-radius:20rem;padding:.3rem .8rem;font-size:.75rem;font-weight:700;position:absolute;top:.9rem;left:.9rem}.course-cover{aspect-ratio:16/9;object-fit:cover;background:var(--bg-secondary);width:100%;display:block}.cover-fallback{justify-content:center;align-items:center;display:flex}.cover-fallback img{opacity:.5;width:auto;height:3rem}.course-body{padding:1.1rem 1.25rem 1.4rem}.course-body h2{margin:0 0 .6rem;font-size:1.1rem}.course-meta{color:var(--text-dim);flex-wrap:wrap;align-items:center;gap:.75rem;font-size:.85rem;display:flex}.badge{border:.0625rem solid #0000;border-radius:20rem;padding:.25rem .625rem;font-size:.75rem;font-weight:600;display:inline-block}.badge.lock,.badge.free{background:var(--accent-soft);color:var(--accent-text);border-color:var(--accent-border)}.modal-backdrop{-webkit-backdrop-filter:blur(4px);z-index:50;background:#020617cc;justify-content:center;align-items:center;padding:1rem;display:flex;position:fixed;inset:0}.login-card.modal{width:100%;max-width:32rem;margin:0}.course-hero{aspect-ratio:21/9;object-fit:cover;border-radius:var(--radius-xl);border:.0625rem solid var(--border);width:100%;box-shadow:var(--shadow-lg);margin:.5rem 0 0;display:block}.course-head{padding-top:1.75rem}.stat-row{flex-wrap:wrap;align-items:center;gap:1.25rem 0;margin:1.5rem 0 .25rem;display:flex}.stat-row .btn{margin-left:auto}.stat{border-left:.0625rem solid var(--border);text-align:center;padding:.25rem 1.75rem}.stat:first-child{text-align:left;border-left:0;padding-left:0}.stat-value{font-family:var(--font-heading);color:var(--text);font-size:2rem;font-weight:800;line-height:1.1;display:block}.stat-label{letter-spacing:.08em;text-transform:uppercase;color:var(--text-dim);margin-top:.3rem;font-size:.72rem;font-weight:600;display:block}.progress{background:var(--bg-card);border-radius:20rem;height:.45rem;margin-top:1.25rem;overflow:hidden}.progress>div{background:linear-gradient(90deg,#f6571e,#ff912c);border-radius:20rem;height:100%;transition:width .3s}.module{border-radius:var(--radius-xl);background:var(--glass);-webkit-backdrop-filter:blur(12px);border:.0625rem solid var(--border);margin:1.5rem 0;padding:1.5rem}.module h2{margin:0;font-size:1.15rem}.module-count{color:var(--text-dim);margin:.35rem 0 1rem;font-size:.8rem}.lesson-row{border:.0625rem solid var(--border);border-radius:var(--radius-md);background:var(--bg-secondary);cursor:pointer;align-items:center;gap:.9rem;min-height:2.75rem;margin:.5rem 0;padding:.8rem 1rem;transition:border-color .15s,background .15s;display:flex}.lesson-row:hover{border-color:var(--accent-border);background:#f6571e0a}.check{border:.125rem solid var(--border-hover);color:#0000;border-radius:50%;flex:none;justify-content:center;align-items:center;width:1.5rem;height:1.5rem;font-size:.8rem;display:flex}.check.done{background:var(--accent);border-color:var(--accent);color:#0c1115}.lesson-title{color:var(--text-secondary);flex:1}.lesson-row .duration{color:var(--text-dim);flex:none;font-size:.8rem}.video-frame{aspect-ratio:16/9;border-radius:var(--radius-xl);width:100%;box-shadow:var(--shadow-lg);background:#000;margin:1rem 0;position:relative;overflow:hidden}.video-frame iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.back-link{color:var(--text-dim);margin:.5rem 0 1rem;font-size:.9rem;display:inline-block}.back-link:hover{color:var(--text);text-decoration:none}.done-toggle{margin:1rem 0}.lesson-content{background:var(--glass);-webkit-backdrop-filter:blur(12px);border:.0625rem solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);color:var(--text-secondary);margin-top:1.5rem;padding:clamp(1.25rem,3vw,2.5rem);font-size:1.02rem;overflow-x:auto}.lesson-content>*{max-width:48rem}.lesson-content h2{margin:2rem 0 .75rem;font-size:1.4rem}.lesson-content h2:first-child{margin-top:0}.lesson-content h3{color:var(--text);margin:1.75rem 0 .5rem;font-size:1.1rem}.lesson-content strong{color:var(--text)}.lesson-content img{border-radius:var(--radius-sm);max-width:100%;height:auto}.lesson-content a{color:var(--accent-text)}.lesson-content li{margin:.3rem 0}.lesson-content li::marker{color:var(--accent)}.cta-box{border-radius:var(--radius);background:var(--bg-card);border:.0625rem solid var(--border);margin:1.75rem 0;padding:1.5rem}.cta-box h3{margin-top:0}.cta-box .btn{text-decoration:none}.lesson-content pre{border-radius:var(--radius-md);border:.0625rem solid var(--border);color:var(--text-secondary);white-space:pre-wrap;word-break:break-word;background:#0c1115;max-width:100%;padding:2.6rem 1.1rem 1.1rem;font-size:.85rem;line-height:1.55;position:relative;overflow-x:auto}.lesson-content pre code{color:inherit;background:0 0;border:0;padding:0}.lesson-content code{background:var(--accent-soft);color:var(--accent-text);border-radius:.3rem;padding:.1em .4em;font-size:.9em}.copy-btn{border-radius:var(--radius-sm);background:var(--accent);color:#0c1115;font-family:var(--font-heading);cursor:pointer;border:0;padding:.3rem .8rem;font-size:.75rem;font-weight:700;position:absolute;top:.55rem;right:.55rem}.copy-btn:hover{background:var(--accent-text)}.lesson-content table{border-collapse:collapse;border:.0625rem solid var(--border);border-radius:var(--radius-md);width:100%;margin:1.25rem 0;font-size:.92rem;display:block;overflow-x:auto}.lesson-content th{background:var(--bg-secondary);color:var(--text-dim);letter-spacing:.04em;text-transform:uppercase;font-size:.72rem;font-weight:700}.lesson-content th,.lesson-content td{border-bottom:.0625rem solid var(--border);text-align:left;vertical-align:top;padding:.65rem .9rem}.lesson-content tr:hover td{background:#f6571e0a}.lesson-content a.btn{color:#0c1115;width:auto;text-decoration:none}.lesson-content a.btn:hover{color:#0c1115}.lesson-content details{border:.0625rem solid var(--border);border-radius:var(--radius-md);background:var(--bg-secondary);margin:.6rem 0}.lesson-content details[open]{border-color:var(--accent-border)}.lesson-content summary{cursor:pointer;color:var(--text);padding:.9rem 1.1rem;font-weight:600;list-style:none}.lesson-content summary::-webkit-details-marker{display:none}.lesson-content summary:before{content:"+";color:var(--accent-text);margin-right:.7rem;font-weight:700}.lesson-content details[open] summary:before{content:"−"}.lesson-content details p{margin:0;padding:0 1.1rem 1.1rem 2.3rem}@media (prefers-reduced-motion:reduce){*{transition:none!important}}@media (width<=40rem){.course-grid{grid-template-columns:1fr}.btn{width:100%}.shell{padding:0 .75rem 3rem}.topbar{margin:0 -.75rem 1.5rem;padding:.75rem}.topbar nav{display:none!important}.newsletter-toggle span{display:none}.stat{flex:30%;min-width:0;padding:.25rem .75rem}.stat-row .btn{margin-left:0}}.lesson-layout{grid-template-columns:19rem minmax(0,1fr);align-items:start;gap:2rem;display:grid}.lesson-layout.nav-collapsed{grid-template-columns:2.75rem minmax(0,1fr)}.lesson-main{min-width:0}.lesson-nav{background:var(--glass);-webkit-backdrop-filter:blur(12px);border:.0625rem solid var(--border);border-radius:var(--radius-xl);max-height:calc(100vh - 7rem);margin-top:.5rem;padding:1.25rem 1rem 1rem;position:sticky;top:5.5rem;overflow-y:auto}.lesson-nav.collapsed{-webkit-backdrop-filter:none;backdrop-filter:none;background:0 0;border-color:#0000;padding:.5rem 0}.nav-toggle{float:right;border-radius:var(--radius-sm);cursor:pointer;background:var(--bg-card);width:2rem;height:2rem;color:var(--text-secondary);border:.0625rem solid var(--border);margin:-.35rem -.25rem 0 .5rem;font-size:1.2rem;line-height:1}.lesson-nav.collapsed .nav-toggle{float:none;width:2.5rem;height:2.5rem;margin:0 auto;display:block}.nav-toggle:hover{border-color:var(--accent-border);color:var(--text)}.nav-course{font-family:var(--font-heading);color:var(--text);font-size:.95rem;font-weight:700;line-height:1.3;display:block}.nav-course:hover{color:var(--accent-text);text-decoration:none}.nav-progress-label{color:var(--text-dim);margin:.4rem 0 0;font-size:.78rem}.lesson-nav .progress{margin:.5rem 0 1rem}.nav-module{border-top:.0625rem solid var(--border);padding:.25rem 0}.nav-module summary{cursor:pointer;font-family:var(--font-heading);color:var(--text-secondary);gap:.5rem;padding:.6rem .25rem;font-size:.8rem;font-weight:700;list-style:none;display:flex}.nav-module summary::-webkit-details-marker{display:none}.nav-module summary:before{content:"›";color:var(--accent-text);transition:transform .15s;display:inline-block}.nav-module[open] summary:before{transform:rotate(90deg)}.nav-lesson{border-radius:var(--radius-sm);color:var(--text-muted);align-items:flex-start;gap:.6rem;margin:.1rem 0;padding:.5rem;font-size:.85rem;line-height:1.35;display:flex}.nav-lesson:hover{color:var(--text);background:#f6571e0f;text-decoration:none}.nav-lesson.active{background:var(--accent-soft);color:var(--text)}.nav-lesson .check{width:1.15rem;height:1.15rem;margin-top:.05rem;font-size:.65rem}.lesson-footer{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;margin:1.5rem 0;display:flex}.lesson-pager{flex-wrap:wrap;gap:.75rem;display:flex}.btn-secondary{background:var(--bg-card);color:var(--text-secondary);border:.0625rem solid var(--border);box-shadow:none}.btn-secondary:hover{background:var(--bg-hover);color:var(--text)}.lesson-content a.btn-secondary,a.btn-secondary{color:var(--text-secondary)}@media (width<=64rem){.lesson-layout,.lesson-layout.nav-collapsed{grid-template-columns:1fr;gap:1rem}.lesson-nav{max-height:none;position:static}.lesson-nav.collapsed{padding:0}.lesson-nav.collapsed .nav-toggle{margin:0}}.nerd-level{border-radius:var(--radius);background:var(--glass);border:.0625rem solid var(--border);-webkit-backdrop-filter:blur(12px);max-width:30rem;margin:0 0 1.25rem;padding:1rem 1.25rem}.nerd-head{justify-content:space-between;align-items:baseline;gap:1rem;display:flex}.nerd-label{letter-spacing:.08em;text-transform:uppercase;color:var(--text-dim);font-size:.72rem;font-weight:700}.nerd-name{font-family:var(--font-heading);color:var(--accent-text);font-size:1.25rem;font-weight:800}.nerd-level .progress{margin:.6rem 0 .5rem}.nerd-hint{color:var(--text-muted);margin:0;font-size:.85rem}
