:root{--bg:#0d0f12;--bg2:#13161c;--bg3:#1a1f2b;--bg4:#0a0c0f;--border:rgba(255,255,255,0.07);--border2:rgba(255,255,255,0.12);--blue:#3b82f6;--blue-lt:#60a5fa;--blue-dk:#1d4ed8;--white:#f1f5f9;--muted:rgba(255,255,255,0.52);--dim:rgba(255,255,255,0.28);--green:#22c55e;--purple:#a78bfa;--teal:#2dd4bf;--amber:#fbbf24;--pink:#f472b6;--red:#f87171;--font:'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;--mono:'JetBrains Mono', 'Fira Code', monospace;--shadow:0 4px 24px rgba(0,0,0,0.4);--shadow-lg:0 8px 48px rgba(0,0,0,0.6)}*,::after,::before{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-size:16px;overflow-x:hidden}body,h1,h2{color:var(--white)}body{background:var(--bg);font-family:var(--font);line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:inherit;text-decoration:none}img,svg{max-width:100%;display:block}button,input{font-family:inherit;font-size:inherit}button{cursor:pointer}h1,h2{font-size:clamp(28px,4.5vw,44px);font-weight:800;line-height:1.18;letter-spacing:-.6px}h2{font-size:clamp(22px,3.5vw,32px);font-weight:700;line-height:1.25;letter-spacing:-.4px}p{color:var(--muted);line-height:1.78;margin-bottom:1rem}.container{max-width:1200px;margin:0 auto;padding:0 24px}#site-header{position:sticky;top:0;z-index:200;background:rgb(13 15 18/.97);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border);transition:box-shadow .3s}.nav-logo,.nav-wrap{display:flex;align-items:center}.nav-wrap{justify-content:space-between;max-width:1200px;margin:0 auto;padding:0 24px;height:60px}.nav-logo{gap:2px;font-size:16px;font-weight:800;color:var(--white);letter-spacing:-.5px;flex-shrink:0}.nav-logo .accent{color:var(--blue)}.nav-actions,.nav-menu{display:flex;align-items:center;gap:4px}.nav-menu a{font-size:13px;color:var(--dim);font-weight:500;padding:6px 12px;border-radius:6px;transition:color .15s,background .15s;position:relative}.nav-menu a:hover{background:rgb(255 255 255/.05)}.nav-actions{gap:10px}.nav-subscribe{background:var(--blue);color:#fff;font-size:12px;font-weight:700;padding:8px 18px;border-radius:6px;border:0;transition:background .15s;letter-spacing:.2px;white-space:nowrap}.nav-subscribe:hover{background:var(--blue-dk)}.nav-toggle{display:none;background:0 0;border:0;flex-direction:column;gap:5px;padding:4px}.nav-toggle span{display:block;width:22px;height:2px;background:var(--white);border-radius:2px;transition:all .25s}#site-footer{border-top:1px solid var(--border);padding:52px 0 30px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1fr;gap:32px;margin-bottom:44px}.footer-brand-name{font-size:18px;font-weight:800;color:var(--white);margin-bottom:12px;letter-spacing:-.3px}.footer-brand-name .accent{color:var(--blue)}.footer-tagline{font-size:13px;color:var(--muted);line-height:1.75;margin-bottom:20px}.footer-socials{display:flex;gap:8px;flex-wrap:wrap}.f-social,.footer-links a{color:var(--dim);text-decoration:none}.f-social{width:34px;height:34px;border-radius:8px;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;transition:all .18s;cursor:pointer}.f-social svg{width:15px!important;height:15px!important}.f-social:hover{border-color:var(--blue);color:var(--blue-lt);background:rgb(59 130 246/.07)}.footer-col-title{font-size:11px;font-weight:700;color:var(--white);text-transform:uppercase;letter-spacing:1.5px;margin-bottom:16px}.footer-links{display:flex;flex-direction:column;gap:10px}.footer-links a{font-size:13px;transition:color .2s}.footer-legal a:hover,.footer-links a:hover,.nav-menu a:hover{color:var(--white)}.footer-links a svg{opacity:.5;width:14px!important;height:14px!important;display:inline-flex;flex-shrink:0;vertical-align:middle}.footer-bottom{padding-top:26px;border-top:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px}.footer-copy,.footer-legal a{font-size:12px;color:var(--dim)}.footer-legal{display:flex;gap:20px}.footer-legal a{transition:color .15s}@media (max-width:1100px){.footer-grid{grid-template-columns:1fr 1fr}}@media (max-width:768px){.nav-menu{display:none}.nav-toggle{display:flex}.footer-grid{grid-template-columns:1fr 1fr}}@media (max-width:480px){.footer-grid{grid-template-columns:minmax(0,1fr)}}.search-overlay{position:fixed;inset:0;z-index:500;background:rgb(13 15 18/.97);backdrop-filter:blur(20px);display:flex;align-items:flex-start;justify-content:center;padding-top:120px;opacity:0;visibility:hidden;transition:opacity .25s,visibility .25s}.search-overlay-inner{width:100%;max-width:680px;padding:0 24px}.search-overlay-label{font-size:11px;font-weight:700;color:var(--dim);text-transform:uppercase;letter-spacing:2px;margin-bottom:16px;display:block}.search-overlay-form{display:flex;align-items:center;gap:0;background:var(--bg2);border:1px solid var(--border2);border-radius:12px;overflow:hidden;transition:border-color .18s}.search-overlay-form:focus-within{border-color:var(--blue)}.search-overlay-form svg{width:20px;height:20px;margin:0 16px;opacity:.4;flex-shrink:0}.search-overlay-input{flex:1;background:#fff0;border:0;outline:0;color:var(--white);font-size:20px;padding:18px 0;font-family:var(--font)}.search-overlay-input::placeholder{color:var(--dim)}.search-overlay-submit{background:var(--blue);color:#fff;border:0;padding:18px 24px;font-size:14px;font-weight:700;cursor:pointer;transition:background .15s;font-family:inherit}.search-overlay-submit:hover{background:var(--blue-dk)}.search-overlay-close{position:absolute;top:24px;right:24px;background:var(--bg2);border:1px solid var(--border);color:var(--muted);width:40px;height:40px;border-radius:8px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:18px;transition:all .15s}.nav-search-btn:hover,.search-overlay-close:hover{border-color:var(--border2);color:var(--white)}.search-overlay-hint{font-size:12px;color:var(--dim);margin-top:12px;display:flex;gap:16px;flex-wrap:wrap}.search-overlay-hint span{display:flex;align-items:center;gap:5px}.nav-search-btn{width:36px;height:36px;border-radius:8px;border:1px solid var(--border);background:#fff0;color:var(--dim);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s}.nav-search-btn svg{width:15px!important;height:15px!important;max-width:15px!important}.series-page-header{position:relative;background:linear-gradient(135deg,#080c14 0,#0d1829 60%,#111827 100%);border-bottom:1px solid var(--border);padding:60px 0 48px;overflow:hidden}.series-page-bg-grid{position:absolute;inset:0;background-image:linear-gradient(rgb(59 130 246/.04) 1px,transparent 1px),linear-gradient(90deg,rgb(59 130 246/.04) 1px,transparent 1px);background-size:40px 40px;pointer-events:none}.series-page-breadcrumb{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--dim);margin-bottom:32px}.series-page-breadcrumb a{color:var(--dim);text-decoration:none}.series-page-breadcrumb a:hover{color:var(--blue)}.series-page-hero-inner{display:grid;grid-template-columns:80px 1fr 200px;gap:28px;align-items:start}.series-page-icon{font-size:60px;line-height:1;padding-top:4px}.series-page-label{font-size:11px;font-weight:700;color:var(--blue);text-transform:uppercase;letter-spacing:1.5px;margin-bottom:8px}.series-page-title{font-size:40px;font-weight:800;color:var(--white);line-height:1.1;margin:0 0 12px;letter-spacing:-1px}.series-page-desc{color:var(--dim);font-size:15px;line-height:1.6;margin:0 0 16px;max-width:500px}.series-page-stats{display:flex;gap:8px;flex-wrap:wrap}.series-stat-pill{font-size:12px;font-weight:600;padding:4px 12px;border-radius:20px;background:rgb(59 130 246/.12);color:var(--blue);border:1px solid rgb(59 130 246/.2)}.series-stat-dim{background:rgb(255 255 255/.04);color:var(--dim);border-color:var(--border)}.series-page-progress-box{display:flex;flex-direction:column;align-items:center;gap:8px;background:rgb(255 255 255/.04);border:1px solid var(--border);border-radius:16px;padding:20px}.series-progress-circle-wrap{position:relative;width:80px;height:80px}.series-circle-text{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:800;color:var(--blue)}.series-progress-label{font-size:11px;color:var(--dim);text-transform:uppercase;letter-spacing:.8px}.series-start-btn{display:block;width:100%;text-align:center;padding:10px;background:var(--blue);color:#fff;text-decoration:none;border-radius:8px;font-size:13px;font-weight:700;margin-top:4px;transition:background .2s}.series-start-btn:hover,.series-sub-btn:hover{background:#2563eb}.series-page-body{display:grid;grid-template-columns:1fr 280px;gap:40px;padding:40px 0 60px}.series-days-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.series-days-header h2{font-size:20px;font-weight:700;color:var(--white);margin:0}.series-days-header span{font-size:13px;color:var(--dim)}.series-lesson-card{display:grid;grid-template-columns:56px 1fr auto;align-items:center;gap:16px;padding:16px;background:var(--bg2);border:1px solid var(--border);border-radius:10px;text-decoration:none;margin-bottom:8px;transition:border-color .15s,background .15s}.series-lesson-card:not(.series-lesson-locked):hover{border-color:rgb(59 130 246/.3);background:#13161c}.series-lesson-locked{opacity:.45;cursor:default}.series-lesson-num{display:flex;flex-direction:column;align-items:center;gap:6px}.series-lesson-num span{font-family:"JetBrains Mono",monospace;font-size:18px;font-weight:700;color:var(--blue)}.series-lesson-dot{width:8px;height:8px;border-radius:50%}.series-dot-live{background:#22c55e}.series-dot-soon{background:rgb(255 255 255/.15)}.series-lesson-title{font-size:14px;font-weight:600;color:var(--white);margin-bottom:4px;line-height:1.4}.series-lesson-soon{color:var(--dim)!important;font-style:italic}.series-lesson-meta{font-size:12px;color:var(--dim)}.series-lesson-arrow{font-size:16px;color:var(--dim);transition:color .15s,transform .15s}.series-lesson-card:not(.series-lesson-locked):hover .series-lesson-arrow{color:var(--blue);transform:translateX(3px)}.series-lesson-lock{font-size:14px}.series-page-sidebar{position:sticky;top:80px;align-self:start}.series-sidebar-card{background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:20px;margin-bottom:16px}.series-sidebar-card-title{font-size:13px;font-weight:700;color:var(--white);margin-bottom:12px}.series-sidebar-card p{font-size:12px;color:var(--dim);line-height:1.5;margin:0 0 12px}.series-sub-btn,.series-sub-input{width:100%;border-radius:6px;font-size:13px}.series-sub-input{padding:8px 12px;background:var(--bg3);border:1px solid var(--border);color:var(--white);margin-bottom:8px;box-sizing:border-box}.series-sub-btn{padding:9px;background:var(--blue);color:#fff;border:0;font-weight:600;cursor:pointer;transition:background .2s}.series-sub-note{font-size:10px!important;color:var(--dim);text-align:center;margin:8px 0 0!important}.series-sidebar-series-link{display:flex;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid var(--border);text-decoration:none;font-size:13px;color:var(--dim);transition:color .15s}.series-sidebar-series-link:last-child{border-bottom:none}.series-sidebar-series-link.active,.series-sidebar-series-link:hover{color:var(--white)}.series-sidebar-series-link.active{font-weight:600}.series-sidebar-series-link small{display:block;font-size:11px;color:var(--dim)}.series-sidebar-series-link>span{font-size:20px}@media (max-width:900px){.series-page-hero-inner{grid-template-columns:60px 1fr}.series-page-progress-box{display:none}.series-page-body{grid-template-columns:1fr}.series-page-sidebar{display:none}}@media (max-width:768px){body{overflow-x:hidden}*{max-width:100%}}