@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@300;400;500;600;700;800;900&display=swap";:root{--bg-dark:#0a0a0b;--bg-darker:#050506;--bg-card:#14141699;--bg-card-hover:#1e1e23cc;--accent-gold:#d4af37;--accent-gold-hover:#f3cf55;--accent-gold-glow:#d4af3733;--text-main:#f5f5f7;--text-muted:#9e9e9f;--text-dark:#121214;--border-light:#ffffff0f;--border-hover:#d4af374d;--font-heading:"Outfit", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;--font-body:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--transition-smooth:all .4s cubic-bezier(.16, 1, .3, 1);--transition-fast:all .2s ease}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-dark);color:var(--text-main);font-family:var(--font-body);-webkit-font-smoothing:antialiased;line-height:1.5;overflow-x:hidden}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);color:#fff;font-weight:700}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-darker)}::-webkit-scrollbar-thumb{transition:var(--transition-fast);background:#ffffff1a;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--accent-gold)}.container{max-width:1300px;margin:0 auto;padding:0 2rem}.cursor-glow{background:radial-gradient(circle, var(--accent-gold-glow) 0%, transparent 70%);pointer-events:none;z-index:1;width:500px;height:500px;transition:transform .1s ease-out;position:fixed;top:0;left:0;transform:translate(-50%,-50%)}.glass-panel{background:var(--bg-card);-webkit-backdrop-filter:blur(15px);border:1px solid var(--border-light);transition:var(--transition-smooth);border-radius:16px}.glass-panel:hover{border-color:#ffffff1a}.glass-input{border:1px solid var(--border-light);color:#fff;width:100%;font-family:var(--font-body);transition:var(--transition-fast);background:#ffffff08;border-radius:10px;padding:.9rem 1.2rem;font-size:.95rem}.glass-input:focus{border-color:var(--accent-gold);background:#ffffff0d;outline:none;box-shadow:0 0 15px #d4af3726}.gold-btn{background:var(--accent-gold);color:var(--bg-darker);font-family:var(--font-heading);letter-spacing:.5px;border:1px solid var(--accent-gold);cursor:pointer;transition:var(--transition-smooth);text-transform:uppercase;border-radius:30px;align-items:center;gap:8px;padding:.8rem 1.8rem;font-size:.95rem;font-weight:700;display:inline-flex}.gold-btn:hover{background:var(--accent-gold-hover);border-color:var(--accent-gold-hover);transform:translateY(-2px);box-shadow:0 8px 25px #d4af3759}.gold-btn:active{transform:translateY(0)}.outline-btn{color:#fff;font-family:var(--font-heading);letter-spacing:.5px;border:1px solid var(--border-light);cursor:pointer;transition:var(--transition-smooth);text-transform:uppercase;background:0 0;border-radius:30px;align-items:center;gap:8px;padding:.8rem 1.8rem;font-size:.95rem;font-weight:600;display:inline-flex}.outline-btn:hover{background:#ffffff0d;border-color:#fff;transform:translateY(-2px)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes slideDown{0%{opacity:0;transform:translateY(-30px)}to{opacity:1;transform:translateY(0)}}@keyframes scaleUp{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.animate-fade{animation:.8s forwards fadeIn}.animate-slide-up{animation:.8s cubic-bezier(.16,1,.3,1) forwards slideUp}.animate-slide-down{animation:.8s cubic-bezier(.16,1,.3,1) forwards slideDown}.animate-scale{animation:.6s cubic-bezier(.16,1,.3,1) forwards scaleUp}.delay-100{animation-delay:.1s}.delay-200{animation-delay:.2s}.delay-300{animation-delay:.3s}.delay-400{animation-delay:.4s}.locked-overlay{-webkit-backdrop-filter:blur(8px);text-align:center;z-index:10;background:linear-gradient(#0a0a0b80 0%,#050506f2 100%);border-radius:16px;flex-direction:column;justify-content:center;align-items:center;width:100%;height:100%;padding:2rem;display:flex;position:absolute;top:0;left:0}.locked-card{flex-direction:column;align-items:center;gap:1.2rem;max-width:400px;padding:2.5rem;display:flex}.locked-card svg{color:var(--accent-gold);filter:drop-shadow(0 0 10px #d4af374d)}.premium-badge{color:#000;font-size:.65rem;font-family:var(--font-heading);text-transform:uppercase;letter-spacing:1px;background:linear-gradient(135deg,#d4af37 0%,#aa7c11 100%);border-radius:4px;padding:4px 10px;font-weight:800}.text-gradient{background:linear-gradient(135deg,#fff 0%,#c5c5c7 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text}.text-gold-gradient{background:linear-gradient(135deg,#f5d166 0%,#aa7c11 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text}.relative{position:relative}.overflow-hidden{overflow:hidden}.app-wrapper{background-color:var(--bg-dark);min-height:100vh;position:relative}.navbar{z-index:1000;border-bottom:1px solid var(--border-light);-webkit-backdrop-filter:blur(20px);width:100%;height:80px;transition:var(--transition-smooth);background:#0a0a0bb3;align-items:center;display:flex;position:fixed;top:0;left:0}.navbar.scrolled{background:#050506e6;border-bottom-color:#ffffff14;height:70px}.nav-container{justify-content:space-between;align-items:center;width:100%;display:flex}.nav-logo-container{cursor:pointer;align-items:center;gap:12px;display:flex}.nav-logo-img{object-fit:contain;width:auto;height:38px;transition:var(--transition-smooth)}.nav-logo-img:hover{transform:scale(1.05)}.nav-logo-text{font-family:var(--font-heading);letter-spacing:-.5px;text-transform:uppercase;align-items:center;margin:0;font-size:1.4rem;font-weight:800;display:flex}.nav-logo-text span{color:var(--accent-gold)}.nav-links{align-items:center;gap:2.2rem;list-style:none;display:flex}.nav-item{color:var(--text-muted);font-family:var(--font-heading);cursor:pointer;transition:var(--transition-fast);padding:8px 0;font-size:.95rem;font-weight:500;text-decoration:none;position:relative}.nav-item:hover,.nav-item.active{color:#fff}.nav-item.active:after{content:"";background:var(--accent-gold);width:100%;height:2px;box-shadow:0 0 10px var(--accent-gold);border-radius:2px;position:absolute;bottom:0;left:0}.nav-actions{align-items:center;gap:1.2rem;display:flex}.user-profile-menu{cursor:pointer;border:1px solid var(--border-light);transition:var(--transition-fast);background:#ffffff05;border-radius:30px;align-items:center;gap:10px;padding:6px 12px;display:flex;position:relative}.user-profile-menu:hover{background:#ffffff0d;border-color:#ffffff26}.user-avatar{background:linear-gradient(135deg, var(--accent-gold) 0%, #aa7c11 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14px;font-size:.8rem;font-weight:700;display:inline-flex}.hero-title{letter-spacing:-1.5px;margin-bottom:1.5rem;font-size:clamp(2.5rem,6vw,4.5rem);font-weight:950;line-height:1.05}.hero-description{color:var(--text-muted);max-width:600px;margin-bottom:2.2rem;font-size:1.15rem;line-height:1.6}.hero-buttons{align-items:center;gap:1.2rem;display:flex}.category-section{-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--border-light);z-index:90;transition:var(--transition-smooth);background:#0a0a0bf2;margin-bottom:3rem;padding:2rem 0;position:sticky;top:80px}.category-wrapper{white-space:nowrap;align-items:center;gap:.8rem;padding:4px 0;display:flex;overflow-x:auto}.category-wrapper::-webkit-scrollbar{display:none}.category-btn{border:1px solid var(--border-light);color:var(--text-muted);font-family:var(--font-heading);letter-spacing:.5px;cursor:pointer;transition:var(--transition-fast);text-transform:uppercase;background:#ffffff05;border-radius:20px;padding:8px 18px;font-size:.85rem;font-weight:600}.category-btn:hover{color:#fff;background:#ffffff0d;border-color:#fff3}.category-btn.active{background:var(--accent-gold);color:var(--bg-darker);border-color:var(--accent-gold)}.course-section-title{letter-spacing:-.5px;align-items:center;gap:12px;margin-bottom:1.8rem;font-size:1.8rem;font-weight:800;display:flex}.course-section-title:before{content:"";background:var(--accent-gold);border-radius:2px;width:4px;height:24px;display:block}.course-grid{grid-template-columns:repeat(auto-fill,minmax(360px,1fr));gap:2.2rem;margin-bottom:5rem;display:grid}.course-card{flex-direction:column;height:100%;display:flex;position:relative;overflow:hidden}.course-card:hover{border-color:var(--border-hover);transform:translateY(-8px);box-shadow:0 12px 30px #d4af3714}.course-thumbnail-container{aspect-ratio:16/9;background:var(--bg-darker);position:relative;overflow:hidden}.course-thumbnail{object-fit:cover;width:100%;height:100%;transition:var(--transition-smooth)}.course-card:hover .course-thumbnail{transform:scale(1.05)}.course-play-overlay{opacity:0;width:100%;height:100%;transition:var(--transition-fast);background:#0006;justify-content:center;align-items:center;display:flex;position:absolute;top:0;left:0}.course-card:hover .course-play-overlay{opacity:1}.play-icon-circle{background:var(--accent-gold);width:60px;height:60px;color:var(--bg-darker);transition:var(--transition-smooth);border-radius:50%;justify-content:center;align-items:center;display:flex;transform:scale(.8);box-shadow:0 0 20px #d4af3766}.course-card:hover .play-icon-circle{transform:scale(1)}.course-difficulty-badge{z-index:2;position:absolute;top:15px;left:15px}.course-info{flex-direction:column;flex-grow:1;padding:1.5rem;display:flex}.course-instructor{font-family:var(--font-heading);color:var(--accent-gold);letter-spacing:1px;text-transform:uppercase;margin-bottom:.4rem;font-size:.8rem;font-weight:700}.course-title{color:#fff;flex-grow:1;margin-bottom:1rem;font-size:1.25rem;font-weight:700;line-height:1.35}.course-meta{border-top:1px solid var(--border-light);color:var(--text-muted);align-items:center;gap:15px;padding-top:1rem;font-size:.8rem;display:flex}.course-meta-item{align-items:center;gap:6px;display:flex}.modal-overlay{-webkit-backdrop-filter:blur(15px);z-index:2000;background:#050506d9;justify-content:center;align-items:center;width:100%;height:100%;padding:1.5rem;display:flex;position:fixed;top:0;left:0}.login-card{width:100%;max-width:480px;padding:3rem;position:relative}.modal-close-btn{color:var(--text-muted);cursor:pointer;transition:var(--transition-fast);background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;padding:6px;display:flex;position:absolute;top:20px;right:20px}.modal-close-btn:hover{color:#fff;background:#ffffff0d}.login-header{text-align:center;margin-bottom:2rem}.login-header-logo{filter:invert()brightness(2);height:48px;margin-bottom:1rem}.login-header h2{letter-spacing:-.5px;margin-bottom:.4rem;font-size:1.8rem;font-weight:800}.login-header p{color:var(--text-muted);font-size:.9rem}.auth-tabs{border-bottom:1px solid var(--border-light);margin-bottom:2rem;display:flex}.auth-tab{color:var(--text-muted);font-family:var(--font-heading);cursor:pointer;text-align:center;transition:var(--transition-fast);background:0 0;border:none;flex:1;padding:12px;font-size:.95rem;font-weight:700;position:relative}.auth-tab.active{color:#fff}.auth-tab.active:after{content:"";background:var(--accent-gold);width:100%;height:2px;position:absolute;bottom:-1px;left:0}.form-group{margin-bottom:1.5rem;position:relative}.form-label{font-family:var(--font-heading);color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:.5rem;font-size:.85rem;font-weight:600;display:block}.form-submit-btn{justify-content:center;width:100%;margin-top:1rem;margin-bottom:1.5rem}.social-login-separator{text-align:center;color:var(--text-muted);text-transform:uppercase;letter-spacing:1px;align-items:center;margin:1.5rem 0;font-size:.75rem;display:flex}.social-login-separator:before,.social-login-separator:after{content:"";border-bottom:1px solid var(--border-light);flex:1}.social-login-separator:not(:empty):before{margin-right:.5em}.social-login-separator:not(:empty):after{margin-left:.5em}.social-btn-container{grid-template-columns:1fr;gap:1rem;display:grid}.video-modal-container{width:100%;max-width:1200px;height:calc(100vh - 80px);display:flex;position:relative;overflow:hidden}.video-player-panel{background:#000;flex-direction:column;flex:3;display:flex;position:relative}.video-wrapper{flex:1;justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.video-embed-frame{border:none;width:100%;height:100%}.video-overlay-details{background:linear-gradient(#0000 0%,#050506e6 100%);padding:2rem}.video-instructor{font-family:var(--font-heading);color:var(--accent-gold);letter-spacing:1.5px;text-transform:uppercase;margin-bottom:.5rem;font-size:.85rem;font-weight:700}.video-title{letter-spacing:-1px;margin-bottom:1rem;font-size:2.2rem;font-weight:900;line-height:1.15}.video-description{color:var(--text-muted);max-width:800px;font-size:.95rem;line-height:1.6}.video-sidebar-panel{border-left:1px solid var(--border-light);background:var(--bg-darker);flex-direction:column;flex:1.2;display:flex;overflow-y:auto}.sidebar-header{border-bottom:1px solid var(--border-light);padding:1.8rem}.sidebar-tab-buttons{border:1px solid var(--border-light);background:#ffffff05;border-radius:8px;gap:10px;margin-bottom:1.2rem;padding:4px;display:flex}.sidebar-tab{color:var(--text-muted);font-family:var(--font-heading);cursor:pointer;transition:var(--transition-fast);background:0 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var(--border-light);border-radius:10px;width:100%}.sidebar-instructor-name{font-size:1.2rem;font-weight:800}.sidebar-instructor-description{color:var(--text-muted);font-size:.85rem;line-height:1.5}.resources-intro{max-width:600px;margin-bottom:3rem}.resources-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:2rem;margin-bottom:5rem;display:grid}.resource-card{flex-direction:column;height:100%;padding:2rem;display:flex;position:relative;overflow:hidden}.resource-icon-circle{width:50px;height:50px;color:var(--accent-gold);background:#d4af3714;border:1px solid #d4af3733;border-radius:12px;justify-content:center;align-items:center;margin-bottom:1.5rem;display:flex}.resource-type{font-size:.7rem;font-family:var(--font-heading);color:var(--accent-gold);letter-spacing:1px;text-transform:uppercase;margin-bottom:.5rem;font-weight:700}.resource-title{color:#fff;margin-bottom:.8rem;font-size:1.15rem;font-weight:700;line-height:1.4}.resource-desc{color:var(--text-muted);flex-grow:1;margin-bottom:2rem;font-size:.85rem;line-height:1.5}.resource-meta-size{color:var(--text-muted);margin-bottom:1rem;font-size:.8rem;font-weight:500}.download-progress-container{background:#ffffff0d;border-radius:2px;width:100%;height:4px;margin-bottom:1rem;overflow:hidden}.download-progress-bar{background:var(--accent-gold);width:0;height:100%;box-shadow:0 0 8px var(--accent-gold);transition:width .1s}.resource-btn{justify-content:center;width:100%}.community-grid{grid-template-columns:2fr 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0;border:none;align-items:center;gap:6px;font-weight:600;display:flex}.discussion-action-btn:hover{color:#fff}.discussion-action-btn.active{color:var(--accent-gold)}.experts-panel{flex-direction:column;gap:1.5rem;display:flex}.experts-panel h3{margin-bottom:.5rem;font-size:1.2rem;font-weight:800}.expert-card{align-items:center;gap:12px;padding:1.2rem;display:flex}.expert-avatar{object-fit:cover;border:1px solid var(--border-light);border-radius:50%;width:50px;height:50px}.expert-info{flex-grow:1}.expert-name{font-family:var(--font-heading);color:#fff;margin-bottom:2px;font-size:.9rem;font-weight:700}.expert-role{color:var(--accent-gold);margin-bottom:4px;font-size:.75rem;font-weight:600}.expert-location{color:var(--text-muted);align-items:center;gap:4px;font-size:.7rem;display:flex}.connect-btn{border-radius:20px;padding:6px 12px;font-size:.75rem}.main-footer{border-top:1px solid var(--border-light);background:var(--bg-darker);margin-top:5rem;padding:4rem 0 2rem}.footer-top{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:2rem;margin-bottom:3rem;display:flex}.footer-info{max-width:320px}.footer-logo{margin-bottom:1rem}.footer-desc{color:var(--text-muted);font-size:.85rem;line-height:1.6}.footer-links-group{flex-wrap:wrap;gap:4rem;display:flex}.footer-col h4{font-size:.8rem;font-family:var(--font-heading);color:var(--text-main);text-transform:uppercase;letter-spacing:1.5px;margin-bottom:1.2rem;font-weight:800}.footer-col ul{flex-direction:column;gap:8px;list-style:none;display:flex}.footer-col a{color:var(--text-muted);transition:var(--transition-fast);font-size:.85rem;text-decoration:none}.footer-col a:hover{color:var(--accent-gold)}.footer-bottom{color:var(--text-muted);border-top:1px solid #ffffff0d;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;padding-top:2rem;font-size:.8rem;display:flex}@media (width<=1024px){.community-grid{grid-template-columns:1fr}}@media (width<=900px){.hero-section{min-height:auto;padding-top:120px}.hero-mockup-bg{display:none}.hero-content{max-width:100%}}@media (width<=768px){.nav-links{display:none}.video-modal-container{flex-direction:column;height:auto;max-height:calc(100vh - 40px);overflow-y:auto}.video-sidebar-panel{border-left:none;border-top:1px solid var(--border-light);height:400px}}.chat-widget{z-index:1000;border:1px solid #d4af3733;flex-direction:column;width:340px;height:460px;display:flex;position:fixed;bottom:20px;right:20px;box-shadow:0 10px 40px #00000080}.chat-header{border-bottom:1px solid var(--border-light);background:#141416f2;justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.chat-header-info{align-items:center;gap:10px;display:flex}.chat-header-avatar{object-fit:cover;border:1px solid #d4af374d;border-radius:50%;width:32px;height:32px}.chat-header-name{font-family:var(--font-heading);color:#fff;font-size:.85rem;font-weight:700}.chat-header-status{color:var(--accent-gold);align-items:center;gap:4px;font-size:.7rem;display:flex}.chat-header-status:before{content:"";background:#2ec4b6;border-radius:50%;width:6px;height:6px;display:inline-block}.chat-body{background:#0a0a0bf5;flex-direction:column;flex-grow:1;gap:12px;padding:16px;display:flex;overflow-y:auto}.chat-message{word-wrap:break-word;border-radius:14px;max-width:80%;padding:10px 14px;font-size:.82rem;line-height:1.4}.chat-message.user{color:#fff;background:#d4af3726;border:1px solid #d4af374d;border-bottom-right-radius:2px;align-self:flex-end}.chat-message.expert{border:1px solid var(--border-light);color:#e0e0e0;background:#ffffff08;border-bottom-left-radius:2px;align-self:flex-start}.typing-indicator{align-self:flex-start;gap:4px;padding:8px 12px;display:flex}.typing-dot{background:var(--text-muted);border-radius:50%;width:6px;height:6px;animation:1.2s ease-in-out infinite typingBounce}.typing-dot:nth-child(2){animation-delay:.2s}.typing-dot:nth-child(3){animation-delay:.4s}@keyframes typingBounce{0%,to{transform:translateY(0)}50%{transform:translateY(-4px)}}.chat-footer{border-top:1px solid var(--border-light);background:#0f0f11fa;gap:8px;padding:10px;display:flex}.chat-input{border:1px solid var(--border-light);color:#fff;transition:var(--transition-fast);background:#ffffff08;border-radius:6px;outline:none;flex-grow:1;padding:8px 12px;font-size:.8rem}.chat-input:focus{border-color:var(--accent-gold)}.preview-modal-container{background:#0a0a0cfa;border:1px solid #d4af3740;border-radius:16px;width:100%;max-width:700px;max-height:calc(100vh - 100px);padding:2.5rem;position:relative;overflow-y:auto;box-shadow:0 10px 40px #0009}.preview-content{margin-top:1.5rem}.dwg-vector-preview{border:1px solid var(--border-light);background:#050506;border-radius:8px;justify-content:center;align-items:center;width:100%;height:300px;padding:20px;display:flex;position:relative;overflow:hidden}.blueprint-grid-overlay{pointer-events:none;background-image:linear-gradient(90deg,#d4af3708 1px,#0000 1px),linear-gradient(#d4af3708 1px,#0000 1px);background-size:20px 20px;position:absolute;inset:0}.document-preview-block{border:1px solid var(--border-light);width:100%;color:var(--text-muted);white-space:pre-wrap;background:#ffffff03;border-radius:8px;max-height:300px;padding:20px;font-family:monospace;font-size:.75rem;line-height:1.5;overflow-y:auto}.login-gate-wrapper{z-index:10;background:#030303;justify-content:center;align-items:center;width:100%;min-height:100vh;padding:4rem 1rem;display:flex;position:relative}.login-gate-container{width:100%;max-width:1100px;margin:0 auto}.login-form-panel{border:1px solid #d4af3726;box-shadow:0 20px 60px #000c,0 0 40px #d4af3708}.input-group{flex-direction:column;gap:8px;display:flex}.glass-range{-webkit-appearance:none;background:#ffffff14;border-radius:3px;outline:none;width:100%;height:6px;transition:background .3s}.glass-range::-webkit-slider-thumb{appearance:none;background:var(--accent-gold);cursor:pointer;border-radius:50%;width:14px;height:14px;transition:transform .1s;box-shadow:0 0 10px #d4af37cc}.glass-range::-webkit-slider-thumb:hover{transform:scale(1.2)}.crane-simulator-card{transition:all .3s;position:relative;overflow:hidden;box-shadow:0 15px 45px #000000b3}.crane-simulator-card.sandbox{border:1px solid var(--border-light);background:#14141866}.crane-simulator-card.full-tool{background:#0a0a0cd9;border:1px solid #d4af371f}.alarm-banner{animation:1s infinite alternate pulse}@keyframes pulse{0%{opacity:.85;transform:scale(1)}to{opacity:1;transform:scale(1.01)}}