@import "https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Inter:wght@300;400;500;600;700&family=Noto+Sans+TC:wght@300;400;500;700;900&display=swap";
:root{--igs-teal:#2ba5b5;--igs-teal-light:#4dd0e1;--igs-green:#2e7d32;--igs-green-light:#4caf50;--igs-red:#c62828;--igs-red-light:#ef5350;--gold:#d4af37;--gold-light:#e8c95a;--gold-dark:#b8961f;--navy-dark:#0a0e1a;--navy:#0f172a;--navy-light:#1e293b;--purple:#7c3aed;--purple-light:#a855f7;--cyan:#00d4ff;--cyan-dark:#00a3cc;--text-primary:#f8fafc;--text-secondary:#cbd5e1;--text-muted:#94a3b8;--text-dim:#64748b;--bg-primary:#0a0e1a;--bg-secondary:#0f172a;--bg-card:#0f172a99;--bg-card-hover:#1e293bcc;--border-subtle:#d4af3726;--border-glass:#f8fafc14;--glass-bg:#0f172a80;--glass-border:#f8fafc1a;--glass-blur:20px;--gradient-gold:linear-gradient(135deg, #d4af37 0%, #e8c95a 50%, #d4af37 100%);--gradient-purple:linear-gradient(135deg, #7c3aed 0%, #00d4ff 100%);--gradient-hero:radial-gradient(ellipse at 20% 50%, #7c3aed26 0%, transparent 50%), radial-gradient(ellipse at 80% 20%, #00d4ff1a 0%, transparent 50%), radial-gradient(ellipse at 50% 80%, #d4af3714 0%, transparent 50%);--font-heading:"Outfit", "Noto Sans TC", sans-serif;--font-body:"Inter", "Noto Sans TC", sans-serif;--font-chinese:"Noto Sans TC", sans-serif;--section-padding:100px 0;--container-max:1280px;--container-padding:0 24px;--transition-fast:.2s cubic-bezier(.4, 0, .2, 1);--transition-base:.3s cubic-bezier(.4, 0, .2, 1);--transition-slow:.5s cubic-bezier(.4, 0, .2, 1);--shadow-sm:0 1px 2px #0000004d;--shadow-md:0 4px 16px #0006;--shadow-lg:0 8px 32px #00000080;--shadow-gold:0 0 30px #d4af3726;--shadow-purple:0 0 30px #7c3aed26;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;--radius-full:9999px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-body);background-color:var(--bg-primary);color:var(--text-primary);line-height:1.7;overflow-x:hidden}a{color:inherit;text-decoration:none}button{cursor:pointer;background:0 0;border:none;font-family:inherit}img{max-width:100%;height:auto}ul,ol{list-style:none}.container{max-width:var(--container-max);padding:var(--container-padding);margin:0 auto}.text-gradient,.text-gradient-purple{background:var(--gradient-purple);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.section-title{font-family:var(--font-heading);margin-bottom:16px;font-size:2.8rem;font-weight:700;line-height:1.2}.section-subtitle{color:var(--text-muted);max-width:640px;margin:0 auto 48px;font-size:1.15rem}.glass-card{background:var(--glass-bg);-webkit-backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);border-radius:var(--radius-lg);transition:all var(--transition-base)}.glass-card:hover{background:var(--bg-card-hover);border-color:var(--border-subtle);box-shadow:var(--shadow-gold);transform:translateY(-4px)}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-20px)}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}@keyframes pulse-glow{0%,to{box-shadow:0 0 20px #d4af3733}50%{box-shadow:0 0 40px #d4af3766}}@keyframes rotate-slow{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes slide-in-right{0%{opacity:0;transform:translate(40px)}to{opacity:1;transform:translate(0)}}.animate-fade-in-up{animation:.7s ease-out forwards fadeInUp}.animate-delay-1{animation-delay:.1s}.animate-delay-2{animation-delay:.2s}.animate-delay-3{animation-delay:.3s}.animate-delay-4{animation-delay:.4s}.animate-delay-5{animation-delay:.5s}.navbar{z-index:1000;-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border-glass);transition:all var(--transition-base);background:#0a0e1ad9;padding:16px 0;position:fixed;top:0;left:0;right:0}.navbar.scrolled{background:#0a0e1af2;padding:10px 0}.nav-inner{max-width:var(--container-max);padding:var(--container-padding);justify-content:space-between;align-items:center;margin:0 auto;display:flex}.nav-logo{font-family:var(--font-heading);align-items:center;gap:10px;font-size:1.5rem;font-weight:700;display:flex}.nav-logo-img{object-fit:contain;border-radius:8px;width:40px;height:40px}.nav-logo-text{letter-spacing:-.02em;font-size:1.3rem}.logo-i{color:var(--igs-red);font-weight:800}.logo-g{color:var(--igs-green);font-weight:800}.logo-s{color:var(--igs-teal);font-weight:800}.logo-cn{font-family:var(--font-chinese);color:var(--text-secondary);font-size:.92em;font-weight:600}.nav-links{align-items:center;gap:32px;display:flex}.nav-links a{color:var(--text-secondary);transition:color var(--transition-fast);font-size:.92rem;font-weight:500;position:relative}.nav-links a:hover{color:var(--gold)}.nav-links a:after{content:"";background:var(--gradient-gold);width:0;height:2px;transition:width var(--transition-base);position:absolute;bottom:-4px;left:0}.nav-links a:hover:after{width:100%}.nav-actions{align-items:center;gap:12px;display:flex}.nav-toggle-btn{border-radius:var(--radius-full);color:var(--text-muted);border:1px solid var(--border-glass);transition:all var(--transition-fast);background:0 0;padding:6px 14px;font-size:.82rem;font-weight:600}.nav-toggle-btn:hover{color:var(--text-primary);border-color:var(--gold)}.nav-toggle-btn.active{color:var(--gold);border-color:var(--gold);background:#d4af3726}.nav-cta{border-radius:var(--radius-full);background:var(--gradient-gold);color:var(--navy-dark);transition:all var(--transition-base);padding:10px 24px;font-size:.9rem;font-weight:600}.nav-cta:hover{box-shadow:var(--shadow-gold);transform:translateY(-1px)}.nav-mobile-toggle{cursor:pointer;flex-direction:column;gap:5px;padding:8px;display:none}.nav-mobile-toggle span{background:var(--text-primary);width:24px;height:2px;transition:all var(--transition-fast);border-radius:2px}.hero{align-items:center;min-height:100vh;padding:120px 0 80px;display:flex;position:relative;overflow:hidden}.hero-bg{background:var(--gradient-hero);z-index:0;position:absolute;inset:0}.hero-circles{z-index:0;position:absolute;inset:0;overflow:hidden}.hero-circle{opacity:.06;border-radius:50%;position:absolute}.hero-circle:first-child{background:var(--purple);width:600px;height:600px;animation:8s ease-in-out infinite float;top:-200px;right:-100px}.hero-circle:nth-child(2){background:var(--cyan);width:400px;height:400px;animation:10s ease-in-out 2s infinite float;bottom:-100px;left:-100px}.hero-circle:nth-child(3){background:var(--gold);width:300px;height:300px;animation:12s ease-in-out 4s infinite float;top:30%;right:20%}.hero-content{z-index:1;max-width:var(--container-max);padding:var(--container-padding);text-align:center;margin:0 auto;position:relative}.hero-badge{border-radius:var(--radius-full);color:var(--purple-light);background:#7c3aed1f;border:1px solid #7c3aed4d;align-items:center;gap:8px;margin-bottom:32px;padding:8px 20px;font-size:.85rem;font-weight:500;animation:.6s ease-out fadeInUp;display:inline-flex}.hero-title{font-family:var(--font-heading);opacity:0;letter-spacing:-.02em;margin-bottom:16px;font-size:clamp(2.5rem,6vw,4.5rem);font-weight:800;line-height:1.15;animation:.7s ease-out .1s forwards fadeInUp}.hero-subtitle{font-family:var(--font-heading);color:var(--text-secondary);opacity:0;margin-bottom:24px;font-size:clamp(1.1rem,2.5vw,1.6rem);font-weight:400;animation:.7s ease-out .2s forwards fadeInUp}.hero-desc{color:var(--text-muted);opacity:0;max-width:640px;margin:0 auto 32px;font-size:1.1rem;animation:.7s ease-out .3s forwards fadeInUp}.hero-tags{opacity:0;flex-wrap:wrap;justify-content:center;gap:12px;margin-bottom:40px;animation:.7s ease-out .35s forwards fadeInUp;display:flex}.hero-tag{border-radius:var(--radius-full);color:var(--gold-light);background:#d4af371a;border:1px solid #d4af3733;padding:6px 16px;font-size:.82rem;font-weight:500}.hero-ctas{opacity:0;justify-content:center;gap:16px;margin-bottom:64px;animation:.7s ease-out .4s forwards fadeInUp;display:flex}.btn-primary{border-radius:var(--radius-full);background:var(--gradient-gold);color:var(--navy-dark);transition:all var(--transition-base);align-items:center;gap:8px;padding:14px 36px;font-size:1rem;font-weight:600;display:inline-flex}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px #d4af3759}.btn-secondary{border-radius:var(--radius-full);color:var(--text-primary);border:1px solid var(--border-glass);transition:all var(--transition-base);background:0 0;align-items:center;gap:8px;padding:14px 36px;font-size:1rem;font-weight:600;display:inline-flex}.btn-secondary:hover{border-color:var(--gold);color:var(--gold);transform:translateY(-2px)}.hero-stats{opacity:0;grid-template-columns:repeat(4,1fr);gap:24px;max-width:800px;margin:0 auto;animation:.7s ease-out .5s forwards fadeInUp;display:grid}.hero-stat{text-align:center}.hero-stat-value{font-family:var(--font-heading);color:var(--gold);font-size:2rem;font-weight:700;line-height:1.2}.hero-stat-label{color:var(--text-muted);margin-top:4px;font-size:.82rem}.products{padding:var(--section-padding);background:var(--bg-secondary);position:relative}.products:before{content:"";background:linear-gradient(90deg, transparent, var(--border-subtle), transparent);height:1px;position:absolute;top:0;left:0;right:0}.products-header{text-align:center;margin-bottom:64px}.products-grid{max-width:var(--container-max);padding:var(--container-padding);grid-template-columns:repeat(3,1fr);gap:28px;margin:0 auto;display:grid}.product-card{flex-direction:column;padding:40px 32px;display:flex}.product-icon{border-radius:var(--radius-md);background:#d4af371a;border:1px solid #d4af3733;justify-content:center;align-items:center;width:56px;height:56px;margin-bottom:24px;font-size:1.5rem;display:flex}.product-title{font-family:var(--font-heading);margin-bottom:8px;font-size:1.4rem;font-weight:600}.product-subtitle{color:var(--text-muted);margin-bottom:16px;font-size:.92rem}.product-desc{color:var(--text-secondary);flex-grow:1;margin-bottom:20px;font-size:.95rem;line-height:1.7}.product-features{flex-direction:column;gap:8px;display:flex}.product-feature{color:var(--text-muted);align-items:center;gap:8px;font-size:.85rem;display:flex}.product-feature:before{content:"✦";color:var(--gold);font-size:.7rem}.video-theater{padding:var(--section-padding);background:var(--bg-primary);position:relative}.video-theater:before{content:"";background:linear-gradient(90deg,#0000,#7c3aed4d,#0000);height:1px;position:absolute;top:0;left:0;right:0}.theater-header{text-align:center;margin-bottom:48px}.theater-header .section-title{margin-bottom:8px}.theater-emoji{margin-bottom:16px;font-size:2.2rem;display:block}.theater-filters{flex-wrap:wrap;justify-content:center;gap:12px;margin-bottom:48px;display:flex}.filter-btn{border-radius:var(--radius-full);color:var(--text-muted);border:1px solid var(--border-glass);transition:all var(--transition-base);background:0 0;align-items:center;gap:6px;padding:10px 24px;font-size:.88rem;font-weight:500;display:inline-flex}.filter-btn:hover{color:var(--text-primary);border-color:var(--text-dim)}.featured-video{border-radius:var(--radius-lg);aspect-ratio:16/9;background:var(--navy);max-width:960px;box-shadow:var(--shadow-lg);border:1px solid var(--border-glass);margin:0 auto 48px;position:relative;overflow:hidden}.featured-video img{object-fit:cover;width:100%;height:100%;display:block}.featured-video iframe{border:none;width:100%;height:100%;display:block}.video-play-overlay{cursor:pointer;transition:background var(--transition-base);background:#0a0e1a66;flex-direction:column;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.video-play-overlay:hover{background:#0a0e1a40}.play-btn-large{width:80px;height:80px;color:var(--navy-dark);transition:all var(--transition-base);background:#d4af37e6;border-radius:50%;justify-content:center;align-items:center;margin-bottom:16px;font-size:2rem;display:flex;box-shadow:0 0 40px #d4af374d}.video-play-overlay:hover .play-btn-large{transform:scale(1.1);box-shadow:0 0 60px #d4af3780}.featured-video-title{font-family:var(--font-heading);color:var(--text-primary);text-shadow:0 2px 8px #00000080;font-size:1.2rem;font-weight:600}.video-carousel-wrapper{max-width:var(--container-max);padding:var(--container-padding);margin:0 auto}.video-carousel{scroll-snap-type:x mandatory;scrollbar-width:thin;scrollbar-color:var(--navy-light) transparent;-webkit-overflow-scrolling:touch;gap:20px;padding-bottom:16px;display:flex;overflow-x:auto}.video-carousel::-webkit-scrollbar{height:6px}.video-carousel::-webkit-scrollbar-track{background:0 0}.video-carousel::-webkit-scrollbar-thumb{background:var(--navy-light);border-radius:3px}.video-card{scroll-snap-align:start;border-radius:var(--radius-md);cursor:pointer;background:var(--glass-bg);border:1px solid var(--glass-border);transition:all var(--transition-base);flex:0 0 280px;overflow:hidden}.video-card:hover{border-color:var(--border-subtle);box-shadow:var(--shadow-gold);transform:translateY(-4px)}.video-card-thumb{aspect-ratio:16/9;background:var(--navy);position:relative;overflow:hidden}.video-card-thumb img{object-fit:cover;width:100%;height:100%;transition:transform var(--transition-slow)}.video-card:hover .video-card-thumb img{transform:scale(1.05)}.video-card-play{opacity:0;transition:opacity var(--transition-base);background:#0a0e1a4d;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.video-card:hover .video-card-play{opacity:1}.play-btn-small{width:48px;height:48px;color:var(--navy-dark);background:#d4af37e6;border-radius:50%;justify-content:center;align-items:center;font-size:1.2rem;display:flex}.video-card-info{padding:16px}.video-card-category{color:var(--purple-light);text-transform:uppercase;letter-spacing:.05em;align-items:center;gap:4px;margin-bottom:6px;font-size:.75rem;font-weight:600;display:flex}.video-card-title{font-family:var(--font-heading);color:var(--text-primary);-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:.92rem;font-weight:600;line-height:1.4;display:-webkit-box;overflow:hidden}.yt-subscribe{text-align:center;margin-top:48px}.yt-subscribe-btn{border-radius:var(--radius-full);color:#fff;transition:all var(--transition-base);background:red;align-items:center;gap:10px;padding:14px 32px;font-size:1rem;font-weight:600;display:inline-flex}.yt-subscribe-btn:hover{transform:translateY(-2px);box-shadow:0 8px 30px #ff00004d}.about{padding:var(--section-padding);background:var(--bg-secondary);position:relative}.about:before{content:"";background:linear-gradient(90deg, transparent, var(--border-subtle), transparent);height:1px;position:absolute;top:0;left:0;right:0}.about-content{max-width:var(--container-max);padding:var(--container-padding);grid-template-columns:1fr 1fr;align-items:center;gap:64px;margin:0 auto;display:grid}.about-text h2{font-family:var(--font-heading);margin-bottom:24px;font-size:2.4rem;font-weight:700}.about-text p{color:var(--text-secondary);margin-bottom:16px;font-size:1.05rem;line-height:1.8}.about-founder{text-align:center;padding:32px}.founder-photo{object-fit:cover;border:3px solid var(--igs-teal);border-radius:50%;width:120px;height:120px;margin-bottom:16px;box-shadow:0 0 20px #2ba5b54d}.founder-name{font-family:var(--font-heading);margin-bottom:8px;font-size:1.5rem;font-weight:700}.founder-title{color:var(--gold);margin-bottom:16px;font-size:.92rem;font-weight:500}.founder-bio{color:var(--text-muted);font-size:.92rem;line-height:1.7}.founder-quote{border-left:3px solid var(--purple);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-secondary);background:#7c3aed14;margin-top:16px;padding:12px 16px;font-size:.88rem;font-style:italic;line-height:1.7}.about-partners{margin-top:48px}.about-partners h3{font-family:var(--font-heading);color:var(--text-muted);text-align:center;margin-bottom:24px;font-size:1.2rem;font-weight:600}.partners-grid{flex-wrap:wrap;justify-content:center;gap:16px;display:flex}.partner-badge{border-radius:var(--radius-full);border:1px solid var(--border-glass);color:var(--text-secondary);transition:all var(--transition-base);background:#0f172a80;padding:10px 22px;font-size:.85rem;font-weight:500}.partner-badge:hover{border-color:var(--border-subtle);color:var(--gold)}.contact{padding:var(--section-padding);background:var(--bg-primary);position:relative}.contact:before{content:"";background:linear-gradient(90deg,#0000,#00d4ff4d,#0000);height:1px;position:absolute;top:0;left:0;right:0}.contact-content{max-width:var(--container-max);padding:var(--container-padding);grid-template-columns:1fr 1fr;gap:64px;margin:0 auto;display:grid}.contact-header{margin-bottom:0}.contact-header h2{font-family:var(--font-heading);margin-bottom:16px;font-size:2.4rem;font-weight:700}.contact-header p{color:var(--text-muted);margin-bottom:40px;font-size:1.05rem;line-height:1.7}.contact-info{flex-direction:column;gap:20px;display:flex}.contact-item{align-items:flex-start;gap:16px;display:flex}.contact-item-icon{border-radius:var(--radius-md);background:#d4af371a;border:1px solid #d4af3733;flex-shrink:0;justify-content:center;align-items:center;width:44px;height:44px;font-size:1.1rem;display:flex}.contact-item-text h4{margin-bottom:4px;font-size:.92rem;font-weight:600}.contact-item-text p,.contact-item-text a{color:var(--text-muted);font-size:.88rem}.contact-item-text a:hover{color:var(--gold)}.contact-form{padding:40px}.form-group{margin-bottom:20px}.form-group label{color:var(--text-secondary);margin-bottom:8px;font-size:.88rem;font-weight:500;display:block}.form-group input,.form-group textarea{border-radius:var(--radius-sm);border:1px solid var(--border-glass);width:100%;color:var(--text-primary);font-family:var(--font-body);transition:border-color var(--transition-fast);background:#0a0e1a80;padding:12px 16px;font-size:.95rem}.form-group input:focus,.form-group textarea:focus{border-color:var(--gold);outline:none;box-shadow:0 0 0 3px #d4af371a}.form-group textarea{resize:vertical;min-height:120px}.form-submit{border-radius:var(--radius-full);background:var(--gradient-gold);color:var(--navy-dark);transition:all var(--transition-base);width:100%;padding:14px 36px;font-size:1rem;font-weight:600}.form-submit:hover{box-shadow:var(--shadow-gold);transform:translateY(-2px)}.form-note{text-align:center;color:var(--text-dim);margin-top:16px;font-size:.82rem}.form-note a{color:var(--gold);text-decoration:underline}.footer{background:var(--navy);border-top:1px solid var(--border-glass);padding:64px 0 32px}.footer-content{max-width:var(--container-max);padding:var(--container-padding);grid-template-columns:2fr 1fr 1fr;gap:48px;margin:0 auto 48px;display:grid}.footer-brand{max-width:360px}.footer-logo{font-family:var(--font-heading);align-items:center;gap:10px;margin-bottom:16px;font-size:1.3rem;font-weight:700;display:flex}.footer-logo-img{object-fit:contain;border-radius:6px;width:36px;height:36px}.footer-tagline{color:var(--text-muted);font-size:.92rem;line-height:1.7}.footer-links h4{font-family:var(--font-heading);color:var(--text-secondary);margin-bottom:16px;font-size:.95rem;font-weight:600}.footer-links ul{flex-direction:column;gap:10px;display:flex}.footer-links a{color:var(--text-muted);transition:color var(--transition-fast);font-size:.88rem}.footer-links a:hover{color:var(--gold)}.footer-social{gap:12px;margin-top:16px;display:flex}.social-link{border-radius:var(--radius-sm);border:1px solid var(--border-glass);width:40px;height:40px;transition:all var(--transition-base);background:#f8fafc0d;justify-content:center;align-items:center;font-size:1.1rem;display:flex}.social-link:hover{border-color:var(--gold);background:#d4af3726}.footer-bottom{max-width:var(--container-max);padding:var(--container-padding);border-top:1px solid var(--border-glass);color:var(--text-dim);justify-content:space-between;align-items:center;margin:0 auto;padding-top:24px;font-size:.82rem;display:flex}@media (max-width:768px){:root{--section-padding:64px 0}.nav-links{display:none}.nav-mobile-toggle{display:flex}.nav-cta{display:none}.hero{padding:100px 0 60px}.hero-title{font-size:2.2rem}.hero-stats{grid-template-columns:repeat(2,1fr);gap:16px}.products-grid{grid-template-columns:1fr;gap:20px}.product-card{padding:28px 24px}.about-content,.contact-content{grid-template-columns:1fr;gap:40px}.footer-content{grid-template-columns:1fr;gap:32px}.footer-bottom{text-align:center;flex-direction:column;gap:12px}.section-title{font-size:2rem}.video-card{flex:0 0 240px}.featured-video{border-radius:var(--radius-md);margin-left:24px;margin-right:24px}}@media (max-width:480px){.hero-title{font-size:1.8rem}.hero-subtitle{font-size:1rem}.hero-ctas{flex-direction:column;align-items:center}.hero-stats{grid-template-columns:repeat(2,1fr)}.hero-stat-value{font-size:1.5rem}.theater-filters{gap:8px}.filter-btn{padding:8px 16px;font-size:.8rem}.play-btn-large{width:60px;height:60px;font-size:1.5rem}.featured-video-title{padding:0 8px;font-size:1rem}.video-card{flex:0 0 200px}.section-title{font-size:1.7rem}.contact-form{padding:24px}}.video-grid-wrapper{margin-top:32px;padding:0 24px}.video-grid-4x3{max-width:var(--container-max);grid-template-columns:repeat(4,1fr);gap:20px;margin:0 auto;display:grid}.video-grid-4x3 .video-card{flex:none;width:100%}@media (max-width:1024px){.video-grid-4x3{grid-template-columns:repeat(3,1fr)}}@media (max-width:768px){.video-grid-4x3{grid-template-columns:repeat(2,1fr)}}@media (max-width:480px){.video-grid-4x3{grid-template-columns:1fr}}.brain-manifesto{max-width:900px;margin:32px auto}.brain-card{text-align:center;border:1px solid var(--igs-teal)!important;background:linear-gradient(135deg,#2ba5b514 0%,#2e7d3214 100%)!important;padding:40px 32px!important}.brain-slogan{font-family:var(--font-heading);color:var(--text-primary);background:linear-gradient(135deg, var(--igs-teal-light) 0%, var(--gold-light) 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:28px;font-size:1.35rem;font-style:italic;font-weight:600;line-height:1.8}.brain-mission-vision{text-align:left;grid-template-columns:1fr 1fr;gap:24px;display:grid}.brain-item{background:#2ba5b50f;border:1px solid #2ba5b526;border-radius:12px;padding:20px}.brain-label{font-family:var(--font-heading);color:var(--igs-teal-light);margin-bottom:8px;font-size:1rem;font-weight:700;display:inline-block}.brain-item p{color:var(--text-secondary);margin:0;font-size:.95rem;line-height:1.6}@media (max-width:768px){.brain-mission-vision{grid-template-columns:1fr}.brain-slogan{font-size:1.1rem}}.filter-btn.active{border-color:var(--igs-teal)!important;color:var(--igs-teal-light)!important;background:#2ba5b526!important}.yt-subscribe-btn{background:linear-gradient(135deg, var(--igs-red) 0%, #e53935 100%)!important}.yt-subscribe-btn:hover{transform:translateY(-2px);background:linear-gradient(135deg, #e53935 0%, var(--igs-red) 100%)!important}.nav-cta{background:linear-gradient(135deg, var(--purple) 0%, var(--cyan) 100%)!important}.nav-cta:hover{background:linear-gradient(135deg, var(--cyan) 0%, var(--purple) 100%)!important}.hero-stat-value{color:var(--cyan)!important}.text-gradient{background:linear-gradient(135deg, var(--purple) 0%, var(--cyan) 100%)!important;-webkit-text-fill-color:transparent!important;-webkit-background-clip:text!important;background-clip:text!important}.knowledge-page{padding-top:80px}.knowledge-nav .nav-active{position:relative;color:var(--cyan)!important}.knowledge-nav .nav-active:after{content:"";background:var(--gradient-purple);border-radius:1px;height:2px;position:absolute;bottom:-4px;left:0;right:0}.knowledge-hero{text-align:center;padding:80px 0 60px;position:relative;overflow:hidden}.knowledge-hero-bg{background:radial-gradient(ellipse at 30% 30%, #7c3aed1f 0%, transparent 50%), radial-gradient(ellipse at 70% 60%, #00d4ff14 0%, transparent 50%), var(--bg-primary);z-index:0;position:absolute;inset:0}.knowledge-hero-content{z-index:1;position:relative}.knowledge-hero h1{font-family:var(--font-heading);margin-bottom:16px;font-size:clamp(2.2rem,5vw,3.5rem);font-weight:800}.knowledge-hero-subtitle{color:var(--text-secondary);max-width:600px;margin:0 auto 8px;font-size:1.15rem}.knowledge-hero-slogan{color:var(--text-muted);margin-bottom:32px;font-size:.95rem;font-style:italic}.knowledge-search{align-items:center;max-width:560px;margin:0 auto;display:flex;position:relative}.search-icon{z-index:2;font-size:1.1rem;position:absolute;left:16px}.search-input{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-full);width:100%;color:var(--text-primary);font-size:1rem;font-family:var(--font-body);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);transition:all var(--transition-base);outline:none;padding:14px 48px}.search-input:focus{border-color:var(--purple);box-shadow:0 0 0 3px #7c3aed26}.search-input::placeholder{color:var(--text-dim)}.search-clear{color:var(--text-muted);cursor:pointer;z-index:2;background:0 0;border:none;padding:4px;font-size:1rem;position:absolute;right:16px}.knowledge-stats{border-bottom:1px solid var(--border-glass);padding:32px 0}.knowledge-stats .stats-grid{flex-wrap:wrap;justify-content:center;gap:48px;display:flex}.knowledge-stats .stat-item{text-align:center}.knowledge-stats .stat-value{font-family:var(--font-heading);color:var(--cyan);font-size:2rem;font-weight:800}.knowledge-stats .stat-label{color:var(--text-muted);margin-top:4px;font-size:.85rem}.knowledge-page .section-title{font-family:var(--font-heading);color:var(--text-primary);margin-bottom:24px;font-size:1.5rem;font-weight:700}.knowledge-featured{padding:48px 0}.featured-grid{grid-template-columns:repeat(auto-fit,minmax(400px,1fr));gap:24px;display:grid}.featured-card{color:inherit;transition:all var(--transition-base);background:#7c3aed0d;border:1px solid #7c3aed40;flex-direction:column;padding:28px;text-decoration:none;display:flex}.featured-card:hover{border-color:var(--purple);transform:translateY(-4px);box-shadow:0 8px 32px #7c3aed33}.featured-badge{margin-bottom:12px;font-size:.8rem;font-weight:600}.featured-card h3{font-family:var(--font-heading);color:var(--text-primary);margin-bottom:8px;font-size:1.15rem;font-weight:700;line-height:1.4}.featured-card p{color:var(--text-secondary);flex:1;margin-bottom:16px;font-size:.9rem;line-height:1.6}.featured-meta{flex-wrap:wrap;align-items:center;gap:16px;margin-bottom:16px;display:flex}.meta-videos{color:var(--cyan);font-size:.85rem;font-weight:600}.meta-tags{flex-wrap:wrap;gap:6px;display:flex}.tag{border-radius:var(--radius-full);color:var(--cyan);cursor:pointer;transition:all var(--transition-fast);background:#00d4ff1a;border:1px solid #00d4ff33;padding:3px 10px;font-size:.72rem}.tag:hover{background:#00d4ff33}.featured-cta{color:var(--purple-light);text-align:center;border-top:1px solid var(--border-glass);padding:8px 0;font-size:.9rem;font-weight:600}.knowledge-browser{padding:48px 0}.knowledge-filters{flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:24px;display:flex}.result-count{text-align:center;color:var(--text-muted);margin-bottom:20px;font-size:.88rem}.playlist-grid{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px;display:grid}.playlist-card{color:inherit;transition:all var(--transition-base);border:1px solid var(--border-glass);flex-direction:column;padding:24px;text-decoration:none;display:flex}.playlist-card:hover{border-color:var(--purple);transform:translateY(-3px);box-shadow:0 6px 24px #7c3aed26}.playlist-card-header{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.playlist-level{font-size:.75rem;font-weight:600}.playlist-count{color:var(--cyan);font-size:.8rem;font-weight:600}.playlist-title{font-family:var(--font-heading);color:var(--text-primary);margin-bottom:8px;font-size:1rem;font-weight:700;line-height:1.4}.playlist-desc{color:var(--text-muted);-webkit-line-clamp:3;-webkit-box-orient:vertical;flex:1;margin-bottom:12px;font-size:.85rem;line-height:1.6;display:-webkit-box;overflow:hidden}.playlist-tags{flex-wrap:wrap;gap:6px;margin-bottom:16px;display:flex}.playlist-cta{color:var(--purple-light);border-top:1px solid var(--border-glass);text-align:center;padding-top:12px;font-size:.85rem;font-weight:600}.no-results{text-align:center;color:var(--text-muted);padding:48px 0}.no-results p{margin-bottom:16px;font-size:1.1rem}.knowledge-instructor{padding:48px 0}.instructor-card{align-items:center;gap:32px;padding:32px;display:flex}.instructor-photo{object-fit:cover;border:3px solid var(--purple);border-radius:50%;flex-shrink:0;width:120px;height:120px;box-shadow:0 0 20px #7c3aed33}.instructor-info h3{margin-bottom:8px;font-size:1.3rem}.instructor-info h4{font-family:var(--font-heading);color:var(--text-primary);margin-bottom:4px;font-size:1.1rem;font-weight:700}.instructor-title-text{color:var(--cyan);margin-bottom:12px;font-size:.9rem;font-weight:500}.instructor-bio{color:var(--text-secondary);margin-bottom:16px;font-size:.88rem;line-height:1.7}.instructor-partners{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.partners-label{color:var(--text-muted);font-size:.82rem}.knowledge-back{padding:32px 0 64px}.back-home-btn{border-radius:var(--radius-full);background:var(--glass-bg);border:1px solid var(--border-glass);color:var(--text-secondary);transition:all var(--transition-base);padding:12px 32px;font-size:.95rem;text-decoration:none;display:inline-block}.back-home-btn:hover{border-color:var(--purple);color:var(--text-primary)}.knowledge-loading{min-height:100vh;color:var(--text-muted);flex-direction:column;justify-content:center;align-items:center;gap:16px;display:flex}.loading-spinner{border:3px solid var(--border-glass);border-top-color:var(--purple);border-radius:50%;width:40px;height:40px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width:768px){.knowledge-hero{padding:60px 0 40px}.knowledge-hero h1{font-size:2rem}.featured-grid,.playlist-grid{grid-template-columns:1fr}.instructor-card{text-align:center;flex-direction:column}.instructor-partners{justify-content:center}.knowledge-stats .stats-grid{gap:24px}.knowledge-filters{gap:6px}}.knowledge-cta{padding:48px 0}.cta-banner{text-align:center;background:radial-gradient(ellipse at 50% 50%, #7c3aed14 0%, transparent 70%), var(--glass-bg);border:1px solid #7c3aed40;padding:48px 32px}.cta-banner h2{font-family:var(--font-heading);margin-bottom:16px;font-size:1.8rem;font-weight:800}.cta-desc{color:var(--text-secondary);max-width:640px;margin:0 auto 28px;font-size:1rem;line-height:1.7}.cta-demo-btn{background:linear-gradient(135deg, var(--purple) 0%, var(--cyan) 100%);color:#fff;font-size:1.1rem;font-weight:700;font-family:var(--font-heading);border-radius:var(--radius-full);transition:all var(--transition-base);padding:16px 40px;text-decoration:none;display:inline-block;box-shadow:0 4px 20px #7c3aed4d}.cta-demo-btn:hover{transform:translateY(-3px);box-shadow:0 8px 32px #7c3aed66}.cta-note{color:var(--text-muted);margin-top:16px;font-size:.85rem}.knowledge-top-picks{padding:48px 0 24px}.knowledge-top-picks .section-title{text-align:center;font-family:var(--font-heading);background:linear-gradient(135deg,#f59e0b,#ef4444);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:8px;font-size:1.6rem;font-weight:800}.top-picks-subtitle{text-align:center;color:var(--text-secondary);margin-bottom:28px;font-size:.9rem}.top-picks-grid{grid-template-columns:repeat(5,1fr);gap:16px;display:grid}.top-pick-card{color:var(--text-primary);border-radius:var(--radius-lg);background:var(--glass-bg);border:1px solid #ffffff0a;text-decoration:none;transition:all .25s;display:block;overflow:hidden}.top-pick-card:hover{border-color:#7c3aed40;transform:translateY(-4px);box-shadow:0 8px 24px #7c3aed1f}.top-pick-thumb{aspect-ratio:16/9;position:relative;overflow:hidden}.top-pick-thumb img{object-fit:cover;width:100%;height:100%;transition:transform .3s}.top-pick-card:hover .top-pick-thumb img{transform:scale(1.05)}.top-pick-play{color:#fff;opacity:0;background:#7c3aedd9;border-radius:50%;justify-content:center;align-items:center;width:36px;height:36px;font-size:14px;transition:opacity .2s;display:flex;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.top-pick-card:hover .top-pick-play{opacity:1}.top-pick-badge{color:#fff;border-radius:var(--radius-full);background:linear-gradient(135deg,#f59e0b,#ef4444);padding:2px 8px;font-size:.65rem;font-weight:800;position:absolute;top:6px;left:6px}.top-pick-source{border-radius:var(--radius-full);background:#0009;padding:1px 6px;font-size:.85rem;position:absolute;bottom:6px;right:6px}.top-pick-title{color:var(--text-secondary);-webkit-line-clamp:2;-webkit-box-orient:vertical;padding:8px 10px;font-size:.75rem;line-height:1.35;display:-webkit-box;overflow:hidden}.top-pick-card:hover .top-pick-title{color:var(--text-primary)}@media (max-width:1024px){.top-picks-grid{grid-template-columns:repeat(4,1fr)}}@media (max-width:768px){.top-picks-grid{grid-template-columns:repeat(2,1fr);gap:10px}.knowledge-top-picks .section-title{font-size:1.2rem}.top-pick-title{padding:6px 8px;font-size:.7rem}}.knowledge-tree-section{padding:48px 0}.knowledge-tree-section .section-title{text-align:center;font-family:var(--font-heading);background:linear-gradient(135deg, var(--purple), var(--cyan));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:8px;font-size:1.8rem;font-weight:800}.tree-subtitle{text-align:center;color:var(--text-secondary);margin-bottom:36px;font-size:.95rem}.knowledge-tree{max-width:900px;margin:0 auto}.tree-root{text-align:center;margin-bottom:24px}.tree-root-label{font-family:var(--font-heading);border-radius:var(--radius-full);color:var(--text-primary);background:linear-gradient(135deg,#7c3aed26,#00d4ff26);border:1px solid #7c3aed4d;padding:12px 32px;font-size:1.4rem;font-weight:800;display:inline-block}.tree-branches{flex-direction:column;gap:16px;display:flex}.tree-branch{border-radius:var(--radius-lg);background:var(--glass-bg);transition:all var(--transition-base);border:1px solid #ffffff0f;overflow:hidden}.tree-branch:hover{border-color:#7c3aed33;transform:translate(4px)}.branch-header{font-family:var(--font-heading);color:var(--text-primary);border-bottom:1px solid #ffffff0a;align-items:center;gap:8px;padding:14px 20px;font-size:1.05rem;font-weight:700;display:flex}.branch-header.fundamentals{border-left:4px solid #22c55e}.branch-header.research{border-left:4px solid #7c3aed}.branch-header.quality{border-left:4px solid #f59e0b}.branch-header.reliability{border-left:4px solid #ef4444}.branch-header.academic{border-left:4px solid #06b6d4}.branch-header.business{border-left:4px solid #8b5cf6}.branch-count{border-radius:var(--radius-full);color:var(--text-muted);background:#ffffff14;margin-left:auto;padding:2px 10px;font-size:.75rem;font-weight:600}.branch-leaves{flex-direction:column;display:flex}.tree-leaf{color:var(--text-secondary);border-bottom:1px solid #ffffff05;align-items:center;gap:10px;padding:10px 20px 10px 36px;font-size:.88rem;text-decoration:none;transition:all .2s;display:flex}.tree-leaf:last-child{border-bottom:none}.tree-leaf:hover{color:var(--text-primary);background:#7c3aed0f;padding-left:42px}.leaf-icon{flex-shrink:0;font-size:1rem}.leaf-name{flex:1}.leaf-count{border-radius:var(--radius-full);color:var(--purple);background:#7c3aed1f;flex-shrink:0;padding:2px 8px;font-size:.72rem;font-weight:600}.contact-map{border-radius:12px;margin-top:20px;overflow:hidden}@media (max-width:768px){.tree-branches{gap:12px}.tree-leaf{padding:8px 12px 8px 24px;font-size:.82rem}.branch-header{padding:12px 16px;font-size:.95rem}.knowledge-tree-section .section-title{font-size:1.3rem}}.knowledge-introduction{padding:40px 0 60px}.intro-card{max-width:900px;margin:0 auto;padding:40px 48px}.intro-content{color:var(--text-secondary);font-size:1.05rem;line-height:1.8}.intro-content p{margin-bottom:24px}.intro-highlight{font-family:var(--font-heading);color:var(--color-primary);text-align:center;border-left:4px solid var(--color-primary);background:#7c3aed0d;border-radius:4px;margin:36px 0;padding:24px;font-size:1.3rem;font-weight:700}@media (max-width:768px){.intro-card{padding:24px 20px}.intro-highlight{margin:24px 0;padding:16px;font-size:1.1rem}.intro-content{font-size:.95rem}}