:root{--bg-primary: #0d0d0d;--bg-secondary: #1a1a1a;--bg-card: #222222;--bg-card-hover: #2a2a2a;--text-primary: #f0f0f0;--text-secondary: #a0a0a0;--text-muted: #888888;--accent: #224A64;--accent-dim: #1b3c52;--accent-glow: rgba(34, 74, 100, .2);--accent-warm: #FDE3C2;--accent-warm-dim: #e8c9a0;--accent-text: #5a9bc9;--border: #333333;--radius: 8px;--radius-lg: 12px;--max-width: 1200px;--header-height: 64px;--yt-red: #ff0000;--yt-red-hover: #cc0000;--tg-blue: #0088cc;--tg-blue-hover: #0077b5}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:var(--header-height)}body{font-family:Inter,system-ui,-apple-system,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:var(--accent-text);text-decoration:none;transition:color .2s}a:hover{color:var(--accent-dim)}img{max-width:100%;display:block}ul{list-style:none}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}::selection{background:var(--accent);color:var(--bg-primary)}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}.app{min-height:100vh;display:flex;flex-direction:column}.section{padding:4rem 1.5rem}.section-title{font-size:2rem;font-weight:700;margin-bottom:2rem;text-align:center;position:relative}.section-title:after{content:"";display:block;width:60px;height:3px;background:var(--accent);margin:.75rem auto 0;border-radius:2px}.container{max-width:var(--max-width);margin:0 auto;width:100%}.skip-link{position:absolute;left:-9999px;z-index:999;padding:.75rem 1.5rem;background:var(--accent);color:var(--bg-primary);font-weight:600;border-radius:var(--radius)}.skip-link:focus{left:50%;top:1rem;transform:translate(-50%)}.header{position:fixed;top:0;left:0;right:0;height:var(--header-height);background:#0d0d0deb;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);z-index:100}.header-inner{max-width:var(--max-width);margin:0 auto;height:100%;display:flex;align-items:center;justify-content:space-between;padding:0 1.5rem}.header-brand{display:flex;flex-direction:row;align-items:center;gap:.5rem;color:var(--text-primary);font-weight:700;font-size:1.25rem}.header-logo{width:36px;height:36px;border-radius:50%;object-fit:cover}.header-brand:hover{color:var(--accent)}.signal-animation{display:block}.tower-mast,.tower-base,.tower-antenna{stroke:var(--text-muted, #666);stroke-width:1.5;stroke-linecap:round}.tower-arcs path{fill:none;stroke:var(--accent-warm, #FDE3C2);stroke-width:1.5;stroke-linecap:round}.tower-arcs{opacity:0;animation:tower-pulse 3s ease-out infinite}.tower-arcs-1{transform-origin:20px 8px;animation-delay:0s}.tower-arcs-2{transform-origin:100px 8px;animation-delay:1s}.tower-arcs-3{transform-origin:180px 8px;animation-delay:2s}.signal-dot{fill:var(--accent-warm, #FDE3C2);filter:drop-shadow(0 0 3px var(--accent-warm, #FDE3C2));animation:signal-travel 3s ease-in-out infinite}@keyframes signal-travel{0%,5%{transform:translate(0)}30%,38%{transform:translate(80px)}63%,71%{transform:translate(160px)}96%,to{transform:translate(0)}}@keyframes tower-pulse{0%{opacity:0;transform:scale(.5)}8%{opacity:.6;transform:scale(1)}16%{opacity:0;transform:scale(1.2)}16.1%,to{opacity:0}}@media(max-width:480px){.signal-animation{display:none}}.header-nav{display:flex;align-items:center;gap:2rem}.header-link{color:var(--text-secondary);font-size:.9rem;font-weight:500;text-transform:uppercase;letter-spacing:.05em;transition:color .2s}.header-link:hover{color:var(--text-primary)}.header-link.active{color:var(--accent)}.header-yt-btn{background:var(--yt-red);color:#fff;padding:.4rem 1rem;border-radius:var(--radius);font-size:.85rem;font-weight:600;transition:background .2s}.header-yt-btn:hover{background:var(--yt-red-hover);color:#fff}.header-tg-btn{background:var(--tg-blue);color:#fff;padding:.4rem 1rem;border-radius:var(--radius);font-size:.85rem;font-weight:600;transition:background .2s}.header-tg-btn:hover{background:var(--tg-blue-hover);color:#fff}.header-hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:.5rem}.header-hamburger span{display:block;width:24px;height:2px;background:var(--text-primary);border-radius:2px;transition:transform .3s,opacity .3s}.header-hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}.header-hamburger.open span:nth-child(2){opacity:0}.header-hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}@media(max-width:768px){.header-hamburger{display:flex}.header-nav{position:fixed;top:var(--header-height);left:0;right:0;background:var(--bg-secondary);flex-direction:column;padding:1.5rem;gap:1rem;border-bottom:1px solid var(--border);transform:translateY(-100%);opacity:0;pointer-events:none;transition:transform .3s,opacity .3s}.header-nav.open{transform:translateY(0);opacity:1;pointer-events:auto}}.footer{background:var(--bg-secondary);border-top:1px solid var(--border);padding:3rem 1.5rem 1.5rem;margin-top:auto}.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;margin-bottom:2.5rem}.footer-heading{font-size:1rem;font-weight:600;margin-bottom:.75rem;color:var(--text-primary)}.footer-text{font-size:.85rem;color:var(--text-secondary);line-height:1.6}.footer-social{display:flex;flex-direction:column;gap:.75rem}.footer-social-link{display:flex;align-items:center;gap:.5rem;color:var(--text-secondary);font-size:.9rem;transition:color .2s}.footer-social-link:hover{color:var(--accent)}.footer-social-icon{display:flex;align-items:center;justify-content:center;width:40px;height:40px;background:var(--bg-card);border:1px solid var(--border);border-radius:50%;font-size:1rem}.footer-bottom{border-top:1px solid var(--border);padding-top:1.5rem;text-align:center;font-size:.8rem;color:var(--text-muted)}.hero{position:relative;min-height:80vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:6rem 1.5rem 4rem;background:radial-gradient(ellipse at 20% 50%,rgba(34,74,100,.1) 0%,transparent 60%),radial-gradient(ellipse at 80% 50%,rgba(253,227,194,.04) 0%,transparent 60%),var(--bg-primary);overflow:hidden}.hero-content{position:relative;max-width:700px;z-index:3}.hero-title{font-family:Playfair Display,Georgia,serif;font-size:clamp(2.5rem,6vw,4.5rem);font-weight:700;margin-bottom:.75rem;background:linear-gradient(135deg,var(--text-primary) 0%,var(--accent) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-quote-figure{margin-bottom:1.5rem}.hero-quote{font-family:Playfair Display,Georgia,serif;font-style:italic;font-size:clamp(1.1rem,2.5vw,1.4rem);color:var(--text-secondary);line-height:1.7;margin-bottom:1.5rem;border-left:3px solid var(--accent);padding-left:1.25rem;text-align:left}.hero-attribution{color:var(--text-muted);font-size:.9rem;margin-bottom:1.5rem;text-align:left;padding-left:1.25rem}.hero-welcome{color:var(--text-secondary);font-size:1rem;line-height:1.7;margin-bottom:2rem;text-align:center}.hero-cta{display:inline-block;background:var(--yt-red);color:#fff;padding:.75rem 2rem;border-radius:var(--radius);font-weight:600;font-size:1rem;transition:background .2s,transform .2s}.hero-cta:hover{background:var(--yt-red-hover);color:#fff;transform:translateY(-2px)}.equipment{background:var(--bg-secondary)}.equipment-intro{text-align:center;color:var(--text-secondary);font-size:.95rem;max-width:700px;margin:0 auto 1.5rem;line-height:1.6}.equipment-coupon{text-align:center;background:linear-gradient(135deg,#224a644d,#224a6426);border:1px solid var(--accent);border-radius:var(--radius);padding:.75rem 1.5rem;margin:0 auto 2rem;max-width:500px;font-size:.9rem;color:var(--text-primary)}.equipment-coupon strong{color:var(--accent-text);letter-spacing:.05em}.equipment-filters{display:flex;justify-content:center;gap:.75rem;margin-bottom:2.5rem;flex-wrap:wrap}.filter-btn{background:var(--bg-card);color:var(--text-secondary);border:1px solid var(--border);padding:.5rem 1.25rem;border-radius:100px;font-size:.85rem;font-weight:500;cursor:pointer;transition:all .2s;font-family:inherit}.filter-btn:hover{color:var(--text-primary);border-color:var(--text-muted)}.filter-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}.equipment-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1.5rem}.equipment-card{position:relative;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:transform .25s,border-color .25s,box-shadow .25s;display:flex;flex-direction:column;color:var(--text-primary)}.equipment-badge{position:absolute;top:.75rem;right:.75rem;background:var(--accent);color:#fff;font-size:.7rem;font-weight:700;padding:.25rem .6rem;border-radius:100px;z-index:1;text-transform:uppercase;letter-spacing:.03em}.equipment-card:hover{transform:translateY(-4px);border-color:var(--accent);box-shadow:0 8px 30px var(--accent-glow);color:var(--text-primary)}.equipment-img-wrap{aspect-ratio:4 / 3;background:#fff;display:flex;align-items:center;justify-content:center;padding:1rem;overflow:hidden}.equipment-img-wrap img{max-height:100%;object-fit:contain;transition:transform .3s}.equipment-card:hover .equipment-img-wrap img{transform:scale(1.05)}.equipment-info{padding:1.25rem;flex:1;display:flex;flex-direction:column}.equipment-category{font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--accent-text);margin-bottom:.5rem}.equipment-name{font-size:1.05rem;font-weight:600;margin-bottom:.5rem}.equipment-desc{font-size:.85rem;color:var(--text-secondary);line-height:1.5;flex:1}.equipment-actions{display:flex;justify-content:space-between;align-items:center;margin-top:.75rem}.equipment-link-text{font-size:.85rem;font-weight:600;color:var(--accent-text);margin-left:auto}.equipment-name-link{text-decoration:none;color:inherit;display:block}.equipment-name-link:hover .equipment-name{color:var(--accent-text)}.equipment-buy-link{text-decoration:none;display:inline-block;margin-left:auto}.equipment-card>a.equipment-img-wrap{display:block;text-decoration:none;color:inherit}.equipment-link-firmware{font-size:.8rem;color:var(--text-secondary);text-decoration:underline;transition:color .2s;cursor:pointer}.equipment-link-firmware:hover{color:var(--text-primary)}.pagination{display:flex;justify-content:center;align-items:center;gap:1.5rem;margin-top:2.5rem}.pagination-btn{background:var(--bg-card);color:var(--text-primary);border:1px solid var(--border);width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s;font-size:1.2rem}.pagination-btn:hover:not(:disabled){border-color:var(--accent);color:var(--accent-text);transform:translateY(-2px)}.pagination-btn:disabled{opacity:.5;cursor:not-allowed;border-color:transparent}.pagination-info{font-size:.9rem;color:var(--text-secondary);font-weight:500}.videos{background:var(--bg-primary)}.videos-status{text-align:center;color:var(--text-secondary);padding:2rem}.videos-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:1.5rem}.video-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:transform .25s,border-color .25s,box-shadow .25s;color:var(--text-primary)}.video-card:hover{transform:translateY(-4px);border-color:var(--yt-red);box-shadow:0 8px 30px #ff00001a;color:var(--text-primary)}.video-thumb-wrap{position:relative;aspect-ratio:16 / 9;background:#000;overflow:hidden}.video-thumb-wrap img{width:100%;height:100%;object-fit:cover;transition:transform .3s}.video-card:hover .video-thumb-wrap img{transform:scale(1.05)}.video-play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:2.5rem;color:#fff;background:#0000004d;opacity:0;transition:opacity .2s}.video-card:hover .video-play{opacity:1}.video-info{padding:1rem 1.25rem}.video-title{font-size:.95rem;font-weight:600;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.video-date{display:block;margin-top:.5rem;font-size:.8rem;color:var(--text-muted)}@media(max-width:400px){.videos-grid{grid-template-columns:1fr}}.newsletter{padding:4rem 1.5rem;background:linear-gradient(#0a0a0ae6,#0a0a0ae6),url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23224A64' fill-opacity='0.08'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2v-4h4v-2H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");border-top:1px solid rgba(34,74,100,.2);border-bottom:1px solid rgba(34,74,100,.2);text-align:center}.newsletter-content{max-width:600px;margin:0 auto}.newsletter-title{font-size:2rem;font-weight:700;margin-bottom:1rem;color:var(--text-primary)}.newsletter-text{font-size:1.1rem;color:var(--text-secondary);margin-bottom:2rem;line-height:1.6}.ml-form-embedWrapper{background-color:transparent!important;padding:0!important;border:none!important}.ml-form-embedBody,.ml-form-successBody{padding:0!important}.ml-form-fieldRow{margin-bottom:1rem!important;width:100%}.ml-field-email input{background-color:var(--bg-card)!important;color:var(--text-primary)!important;border:1px solid var(--border)!important;border-radius:var(--radius)!important;padding:1rem!important;font-family:inherit!important;font-size:1rem!important;width:100%!important;transition:border-color .2s}.ml-field-email input:focus{border-color:var(--accent)!important;outline:none}.ml-field-email input::placeholder{color:var(--text-muted)!important}.ml-form-embedSubmit{margin-top:1rem}.newsletter-cta{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;background:var(--accent)!important;color:#fff!important;padding:1rem 2rem!important;border-radius:var(--radius)!important;font-weight:600!important;text-decoration:none;transition:transform .2s,box-shadow .2s;border:none!important;font-size:1.1rem!important;width:100%;cursor:pointer;font-family:inherit!important}.newsletter-cta:hover{transform:translateY(-2px);box-shadow:0 4px 12px #224a644d!important;background:var(--accent-dim)!important}.newsletter-cta:active{transform:translateY(0)}.ml-form-successContent h4{color:var(--accent)!important;font-size:1.5rem!important;font-weight:700!important;margin-bottom:.5rem!important;font-family:inherit!important}.ml-form-successContent p{color:var(--text-primary)!important;font-size:1.1rem!important;font-family:inherit!important}.ml-form-embedSubmitLoad{display:inline-block;width:20px;height:20px}.ml-form-embedSubmitLoad:after{content:" ";display:block;width:11px;height:11px;margin:1px;border-radius:50%;border:4px solid #fff;border-color:#fff #fff #fff transparent;animation:ml-form-embedSubmitLoad 1.2s linear infinite}@keyframes ml-form-embedSubmitLoad{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}@media(max-width:768px){.newsletter{padding:3rem 1rem}.newsletter-title{font-size:1.75rem}}.rt4d-hero{position:relative;min-height:340px;display:flex;align-items:center;justify-content:center;text-align:center;overflow:hidden;background:linear-gradient(135deg,rgba(34,74,100,.1) 0%,transparent 60%),var(--bg-secondary)}.rt4d-hero:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 20% 80%,rgba(34,74,100,.08) 0%,transparent 50%),radial-gradient(circle at 80% 20%,rgba(253,227,194,.04) 0%,transparent 50%);pointer-events:none}.rt4d-hero-content{position:relative;z-index:1;padding:4rem 1.5rem}.rt4d-hero h1{font-size:clamp(2.5rem,5vw,4rem);font-weight:700;letter-spacing:-.02em;margin-bottom:.75rem}.rt4d-hero h1 .accent{color:var(--accent-text)}.rt4d-hero .subtitle{font-size:1.15rem;color:var(--text-secondary);max-width:600px;margin:0 auto}.rt4d-intro{padding:3rem 1.5rem}.rt4d-intro .container{max-width:var(--max-width);margin:0 auto}.rt4d-intro-video{margin-bottom:2.5rem;border-radius:var(--radius-lg);overflow:hidden;box-shadow:0 4px 24px #0006}.rt4d-intro-video .video-responsive{position:relative;padding-bottom:56.25%;height:0}.rt4d-intro-video .video-responsive iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:none;border-radius:var(--radius-lg)}.rt4d-intro h2{font-size:1.75rem;font-weight:700;margin-bottom:1rem}.rt4d-intro p{color:var(--text-secondary);line-height:1.7;margin-bottom:1rem;max-width:700px}.rt4d-intro ol{color:var(--text-secondary);padding-left:1.5rem;margin-bottom:1.5rem}.rt4d-intro ol li{margin-bottom:.35rem;list-style:decimal}.rt4d-downloads{padding:3rem 1.5rem;background:var(--bg-secondary)}.rt4d-downloads .container{max-width:var(--max-width);margin:0 auto}.rt4d-downloads h2{font-size:1.75rem;font-weight:700;margin-bottom:2rem;text-align:center;position:relative}.rt4d-downloads h2:after{content:"";display:block;width:60px;height:3px;background:var(--accent);margin:.75rem auto 0;border-radius:2px}.rt4d-dl-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.5rem}.rt4d-dl-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.75rem;transition:transform .2s,box-shadow .2s,border-color .2s}.rt4d-dl-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px #0000004d;border-color:var(--accent)}.rt4d-dl-card h3{font-size:1.2rem;font-weight:600;margin-bottom:.75rem;display:flex;align-items:center;gap:.5rem}.rt4d-dl-card h3 .icon{font-size:1.4rem}.rt4d-dl-card .dl-note{color:var(--text-secondary);font-size:.9rem;margin-bottom:1rem;line-height:1.5}.rt4d-dl-card .dl-list{padding:0}.rt4d-dl-card .dl-list li{list-style:none;margin-bottom:.5rem}.rt4d-dl-card .dl-list li a{display:inline-flex;align-items:center;gap:.4rem;font-size:.95rem;padding:.35rem 0;border-bottom:1px solid transparent;transition:border-color .2s}.rt4d-dl-card .dl-list li a:hover{border-bottom-color:var(--accent)}.rt4d-dl-badge{display:inline-block;font-size:.7rem;font-weight:700;background:var(--accent);color:var(--bg-primary);padding:.15rem .5rem;border-radius:4px;margin-left:.5rem;vertical-align:middle;text-transform:uppercase;letter-spacing:.03em}.rt4d-warning{background:#ffc10714;border:1px solid rgba(255,193,7,.25);border-left:4px solid #ffc107;border-radius:var(--radius);padding:1rem 1.25rem;margin:1.5rem 0;color:var(--text-primary);font-size:.95rem;line-height:1.6}.rt4d-warning strong{color:var(--accent-text)}.rt4d-note{background:#224a6414;border:1px solid rgba(34,74,100,.2);border-left:4px solid var(--accent);border-radius:var(--radius);padding:1rem 1.25rem;margin:1.5rem 0;color:var(--text-primary);font-size:.95rem;line-height:1.6}.rt4d-guide{padding:3rem 1.5rem}.rt4d-guide .container{max-width:var(--max-width);margin:0 auto}.rt4d-guide h2{font-size:1.75rem;font-weight:700;margin-bottom:.5rem}.rt4d-guide h3{font-size:1.25rem;font-weight:600;margin-top:2rem;margin-bottom:.75rem;color:var(--accent-text)}.rt4d-guide p{color:var(--text-secondary);line-height:1.7;margin-bottom:.75rem}.rt4d-guide ol,.rt4d-guide ul{color:var(--text-secondary);padding-left:1.5rem;margin-bottom:1.5rem}.rt4d-guide ol li{list-style:decimal;margin-bottom:.5rem;line-height:1.6}.rt4d-guide ul li{list-style:square;margin-bottom:.5rem;line-height:1.6}.rt4d-guide .highlight{background:#ffff0026;padding:.1em .3em;border-radius:3px;font-weight:600}.rt4d-guide-video{margin:2rem 0;border-radius:var(--radius-lg);overflow:hidden;box-shadow:0 4px 24px #0006}.rt4d-guide-video .video-responsive{position:relative;padding-bottom:56.25%;height:0}.rt4d-guide-video .video-responsive iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:none;border-radius:var(--radius-lg)}.rt4d-recommendations{padding:3rem 1.5rem;background:var(--bg-secondary)}.rt4d-recommendations .container{max-width:var(--max-width);margin:0 auto}.rt4d-recommendations h2{font-size:1.75rem;font-weight:700;margin-bottom:1.5rem;text-align:center;position:relative}.rt4d-recommendations h2:after{content:"";display:block;width:60px;height:3px;background:var(--accent);margin:.75rem auto 0;border-radius:2px}.rt4d-rec-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem}.rt4d-rec-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem;display:flex;align-items:flex-start;gap:.75rem}.rt4d-rec-item .rec-icon{font-size:1.5rem;flex-shrink:0;margin-top:.1rem}.rt4d-rec-item p{color:var(--text-secondary);font-size:.95rem;line-height:1.5;margin:0}.rt4d-dmr-image{margin:2rem 0;border-radius:var(--radius-lg);overflow:hidden;box-shadow:0 4px 24px #0006}.rt4d-dmr-image img{width:100%;height:auto;display:block}@media(max-width:768px){.rt4d-hero{min-height:240px}.rt4d-hero-content{padding:3rem 1rem}.rt4d-dl-grid,.rt4d-rec-grid{grid-template-columns:1fr}}