:root{--primary-blue: #0066ff;--primary-dark: #004cc9;--primary-light: #3385ff;--accent-cyan: #00d4ff;--accent-silver: #c0c8d0;--dark-bg: #0a0e1a;--dark-card: #141824;--dark-surface: #1a1f2e;--text-primary: #ffffff;--text-secondary: #b0b8c8;--text-muted: #6b7280;--gradient-primary: linear-gradient(135deg, #0066ff 0%, #00d4ff 100%);--gradient-dark: linear-gradient(180deg, #0a0e1a 0%, #141824 100%);--gradient-overlay: linear-gradient(135deg, rgba(0, 102, 255, .15) 0%, rgba(0, 212, 255, .15) 100%);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .1);--shadow-md: 0 4px 16px rgba(0, 0, 0, .2);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .3);--shadow-glow: 0 0 40px rgba(0, 102, 255, .3);--spacing-xs: .5rem;--spacing-sm: 1rem;--spacing-md: 1.5rem;--spacing-lg: 2rem;--spacing-xl: 3rem;--spacing-2xl: 4rem;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--font-primary: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-heading: "Poppins", sans-serif;--transition-fast: .2s ease;--transition-base: .3s ease;--transition-slow: .5s ease}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-primary);background:var(--dark-bg);color:var(--text-primary);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:700;line-height:1.2;margin-bottom:var(--spacing-sm)}h1{font-size:clamp(2.5rem,5vw,4rem);background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}h2{font-size:clamp(2rem,4vw,3rem)}h3{font-size:clamp(1.5rem,3vw,2rem)}p{margin-bottom:var(--spacing-sm);color:var(--text-secondary)}.btn{display:inline-flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-sm) var(--spacing-lg);border-radius:var(--radius-md);font-family:var(--font-heading);font-weight:600;font-size:1rem;text-decoration:none;border:none;cursor:pointer;transition:all var(--transition-base);position:relative;overflow:hidden}.btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left var(--transition-slow)}.btn:hover:before{left:100%}.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:var(--shadow-md)}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg),var(--shadow-glow)}.btn-secondary{background:transparent;color:var(--text-primary);border:2px solid var(--primary-blue)}.btn-secondary:hover{background:var(--primary-blue);transform:translateY(-2px)}.card{background:var(--dark-card);border-radius:var(--radius-lg);padding:var(--spacing-lg);box-shadow:var(--shadow-md);transition:all var(--transition-base);border:1px solid rgba(255,255,255,.05);position:relative;overflow:hidden}.card:before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--gradient-primary);transform:scaleX(0);transition:transform var(--transition-base)}.card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:#0066ff4d}.card:hover:before{transform:scaleX(1)}.glass{background:#141824b3;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1)}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-md)}.container-wide{max-width:1400px;margin:0 auto;padding:0 var(--spacing-md)}.section{padding:var(--spacing-2xl) 0}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-20px)}}.animate-fade-in{animation:fadeIn .6s ease-out}.animate-fade-in-up{animation:fadeInUp .6s ease-out}.text-center{text-align:center}.text-gradient{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.flex{display:flex}.flex-center{display:flex;align-items:center;justify-content:center}.flex-between{display:flex;align-items:center;justify-content:space-between}.grid{display:grid;gap:var(--spacing-lg)}.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.grid-3{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}@media(max-width:768px){.section{padding:var(--spacing-xl) 0}.grid-2,.grid-3{grid-template-columns:1fr}h1{font-size:2.5rem}h2{font-size:2rem}}::-webkit-scrollbar{width:10px}::-webkit-scrollbar-track{background:var(--dark-bg)}::-webkit-scrollbar-thumb{background:var(--primary-blue);border-radius:10px}::-webkit-scrollbar-thumb:hover{background:var(--primary-light)}.app{width:100vw;height:100vh;overflow:hidden;position:relative;display:flex;align-items:center;justify-content:center}.app-background{position:absolute;inset:0;z-index:0}.bg-image{width:100%;height:100%;object-fit:cover;opacity:.6;filter:brightness(.8) contrast(1.2)}.bg-overlay{position:absolute;inset:0;background:radial-gradient(circle at 30% 50%,#0a0e1abf,#0a0e1af2)}.bg-gradient{position:absolute;inset:0;background:linear-gradient(135deg,rgba(0,102,255,.1) 0%,transparent 50%,rgba(0,212,255,.1) 100%)}.decoration{position:absolute;border-radius:50%;filter:blur(80px);opacity:.15;z-index:0;animation:float 8s ease-in-out infinite}.decoration-1{width:400px;height:400px;background:var(--primary-blue);top:-100px;right:-100px}.decoration-2{width:300px;height:300px;background:var(--accent-cyan);bottom:-50px;left:-50px;animation-delay:2s}.decoration-3{width:250px;height:250px;background:var(--primary-light);top:50%;right:10%;animation-delay:4s}.main-content{position:relative;z-index:1;width:100%;height:100%;display:flex;align-items:center;justify-content:center;padding:2vw;overflow-y:auto;overflow-x:hidden}.home-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:clamp(.8rem,1.5vh,1.2rem);max-width:96vw;width:100%;min-height:100vh;padding:clamp(.5rem,1vh,.8rem) 0}.home-left{display:flex;flex-direction:column;align-items:center;text-align:center;max-width:900px}.home-right{width:100%;display:flex;align-items:center;justify-content:center}.brand-section{display:flex;flex-direction:column;gap:clamp(.3rem,.6vw,.5rem);animation:fadeInUp .8s ease-out}.logo-wrapper{position:relative;width:fit-content}.logo-ring{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);border:2px solid;border-radius:50%;opacity:.3}.logo-ring-1{width:clamp(70px,5vw,80px);height:clamp(70px,5vw,80px);border-color:var(--primary-blue);animation:rotate 8s linear infinite,pulse 3s ease-in-out infinite}.logo-ring-2{width:clamp(90px,6.5vw,100px);height:clamp(90px,6.5vw,100px);border-color:var(--accent-cyan);animation:rotate-reverse 10s linear infinite,pulse 3s ease-in-out infinite;animation-delay:1.5s}@keyframes rotate{0%{transform:translate(-50%,-50%) rotate(0)}to{transform:translate(-50%,-50%) rotate(360deg)}}@keyframes rotate-reverse{0%{transform:translate(-50%,-50%) rotate(360deg)}to{transform:translate(-50%,-50%) rotate(0)}}.logo-icon{width:clamp(40px,3vw,48px);height:clamp(40px,3vw,48px);display:flex;align-items:center;justify-content:center;background:var(--gradient-primary);border-radius:var(--radius-lg);color:#fff;box-shadow:var(--shadow-glow);animation:pulse 3s ease-in-out infinite;position:relative;z-index:1}.logo-icon svg{width:60%;height:60%}.brand-badge{display:inline-flex;align-items:center;gap:clamp(.5rem,.6vw,.6rem);padding:clamp(.5rem,.6vw,.6rem) clamp(1rem,1.2vw,1.2rem);background:#0066ff26;border:1px solid rgba(0,102,255,.4);border-radius:50px;color:var(--accent-cyan);font-size:clamp(.75rem,.85vw,.8rem);font-weight:600;width:fit-content;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.badge-dot{width:clamp(6px,.5vw,6px);height:clamp(6px,.5vw,6px);background:var(--accent-cyan);border-radius:50%;animation:pulse 2s ease-in-out infinite}.main-title{font-family:var(--font-heading);font-size:clamp(2rem,3.5vw,3.2rem);font-weight:800;line-height:1.1;margin:0;color:#fff;text-shadow:0 5px 15px rgba(0,0,0,.5);letter-spacing:-.02em}.main-description{font-size:clamp(.9rem,1.1vw,1.1rem);color:#ffffffb3;line-height:1.5;margin:.5rem 0 1.5rem;max-width:750px}.btn-topics{display:inline-flex;align-items:center;gap:.8rem;padding:1rem 2.5rem;background:linear-gradient(135deg,#06f,#00d4ff);color:#fff;border:none;border-radius:var(--radius-lg);font-family:var(--font-heading);font-weight:800;font-size:1.1rem;cursor:pointer;transition:all .4s cubic-bezier(.175,.885,.32,1.275);box-shadow:0 0 20px #0066ff4d,0 10px 40px #06f6;width:fit-content;margin:1rem auto;position:relative;overflow:hidden;animation:pulse-glow 3s infinite}@keyframes pulse-glow{0%{box-shadow:0 0 20px #0066ff4d,0 10px 40px #06f6}50%{box-shadow:0 0 40px #00d4ff99,0 10px 60px #06f9;transform:translateY(-2px) scale(1.05)}to{box-shadow:0 0 20px #0066ff4d,0 10px 40px #06f6}}.btn-topics:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);transition:left .6s ease}.btn-topics:hover:before{left:100%}.btn-topics:hover{transform:translateY(-5px) scale(1.08);box-shadow:0 0 50px #00d4ffcc,0 15px 50px #0066ffb3;background:linear-gradient(135deg,#07f,#00e5ff)}.stats-container{display:flex;justify-content:center;gap:clamp(1.2rem,2vw,1.8rem);margin-top:clamp(.3rem,.5vh,.4rem)}.stat-item{display:flex;flex-direction:column;align-items:center;gap:clamp(.2rem,.3vh,.25rem);animation:fadeInUp 1s ease-out backwards}.stat-value{font-family:var(--font-heading);font-size:clamp(1.5rem,1.9vw,1.8rem);font-weight:800;color:#00d4ff;line-height:1}.stat-label{font-size:clamp(.65rem,.75vw,.7rem);color:var(--text-secondary);font-weight:500}.features-preview{width:100%;max-width:1200px;display:flex;flex-direction:column;gap:clamp(.4rem,.6vh,.5rem)}.preview-header{display:flex;justify-content:center;align-items:center;gap:.8rem;margin-bottom:clamp(.3rem,.5vh,.4rem)}.preview-title{font-family:var(--font-heading);font-size:clamp(1.3rem,1.5vw,1.4rem);margin:0;color:var(--text-primary)}.preview-badge{display:inline-flex;align-items:center;gap:.4rem;padding:.35rem .75rem;background:#0066ff26;border:1px solid rgba(0,102,255,.3);border-radius:50px;font-size:clamp(.7rem,.75vw,.72rem);font-weight:600;color:var(--accent-cyan)}.badge-pulse{width:6px;height:6px;background:var(--accent-cyan);border-radius:50%;animation:pulse 2s ease-in-out infinite}.preview-list{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(.8rem,1.2vw,1.1rem)}.preview-item{display:flex;flex-direction:column;align-items:center;text-align:center;gap:clamp(.3rem,.45vh,.35rem);padding:clamp(.7rem,1vw,.9rem);background:#14182499;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);transition:all var(--transition-base);cursor:pointer;position:relative;overflow:hidden}.preview-item:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient-primary);transform:scaleX(0);transition:transform 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.preview-icon{background:#0066ff40;border-color:var(--primary-blue);color:var(--accent-cyan);transform:scale(1.1)}.preview-text{display:flex;flex-direction:column;gap:clamp(.15rem,.25vh,.2rem);width:100%}.preview-label{font-weight:600;font-size:clamp(.9rem,1vw,.95rem);color:var(--text-primary)}.preview-desc{font-size:clamp(.7rem,.8vw,.75rem);color:var(--text-secondary)}.preview-count{font-family:var(--font-heading);font-size:clamp(1.3rem,1.7vw,1.6rem);font-weight:800;color:#00d4ff;transition:all var(--transition-base)}.preview-item:hover .preview-count{transform:scale(1.15)}.preview-footer{margin-top:clamp(.3rem,.5vh,.4rem);display:flex;flex-direction:column;align-items:center;gap:.5rem}.progress-indicator{width:100%;max-width:600px;height:5px;background:#0066ff26;border-radius:10px;overflow:hidden}.progress-bar{height:100%;background:var(--gradient-primary);border-radius:10px;animation:progressGrow 1.5s ease-out;box-shadow:0 0 10px #0066ff80}@keyframes progressGrow{0%{width:0%}}.progress-text{font-size:clamp(.75rem,.85vw,.8rem);color:var(--text-secondary);text-align:center;font-weight:500}.topics-screen{width:100%;max-width:96vw;max-height:90vh;display:flex;flex-direction:column;gap:clamp(1rem,1.2vh,1.15rem);padding:clamp(1rem,1.5vh,1.2rem) clamp(.5rem,1vw,1rem);overflow-y:auto}.topics-header{display:flex;justify-content:space-between;align-items:center;animation:fadeIn .5s ease-out}.topics-title{font-family:var(--font-heading);font-size:clamp(1.8rem,2vw,1.95rem);margin:0;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.text-gradient{color:#00d4ff}.topics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(.8rem,1.2vw,1.1rem);padding:0 0 1rem}.topic-card{background:#141824b3;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);padding:clamp(1rem,1.3vw,1.2rem);cursor:pointer;transition:all var(--transition-base);position:relative;overflow:hidden;display:flex;flex-direction:column;gap:clamp(.4rem,.6vh,.5rem);animation:fadeInUp .5s ease-out backwards;min-height:clamp(130px,16vh,150px)}.topic-card:after{content:"";position:absolute;inset:-50%;background:linear-gradient(45deg,transparent 30%,rgba(0,102,255,.1) 50%,transparent 70%);animation:shimmer 8s ease-in-out infinite;pointer-events:none;z-index:0}.topic-card:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(0,102,255,.05) 0%,transparent 40%,transparent 60%,rgba(0,212,255,.05) 100%);border-radius:var(--radius-lg);opacity:0;transition:opacity var(--transition-base);z-index:0;animation:gradientMove 4s ease-in-out infinite alternate}@keyframes shimmer{0%{transform:translate(-50%,-50%) rotate(0)}to{transform:translate(-50%,-50%) rotate(360deg)}}@keyframes gradientMove{0%{background-position:0% 50%}to{background-position:100% 50%}}.topic-card:hover{transform:translateY(-8px) scale(1.02);border-color:#0066ff80;box-shadow:0 12px 32px #0066ff4d,0 0 40px #06f3,inset 0 0 20px #0066ff1a;background:#141824f2}.topic-card:hover:before{opacity:1;animation:borderPulse 2s ease-in-out infinite}@keyframes borderPulse{0%,to{box-shadow:inset 0 0 20px #0066ff4d,0 0 20px #06f3}50%{box-shadow:inset 0 0 30px #00d4ff66,0 0 40px #00d4ff4d}}.topic-count{position:absolute;top:clamp(.9rem,1.1vw,1.05rem);right:clamp(.9rem,1.1vw,1.05rem);font-family:var(--font-heading);font-size:clamp(1.2rem,1.5vw,1.4rem);font-weight:800;color:#0066ff4d}.topic-icon{font-size:clamp(1.8rem,2vw,2rem);margin-bottom:clamp(.2rem,.25vh,.23rem);position:relative;z-index:1;filter:drop-shadow(0 0 8px rgba(0,102,255,.3));animation:iconGlow 3s ease-in-out infinite;transition:all var(--transition-base)}@keyframes iconGlow{0%,to{filter:drop-shadow(0 0 8px rgba(0,102,255,.3))}50%{filter:drop-shadow(0 0 15px rgba(0,212,255,.5))}}.topic-card:hover .topic-icon{transform:scale(1.15) rotate(5deg);filter:drop-shadow(0 0 20px rgba(0,212,255,.8))}.topic-title{font-family:var(--font-heading);font-size:clamp(1rem,1.2vw,1.15rem);font-weight:700;color:var(--text-primary);margin:0;position:relative;z-index:1;transition:all var(--transition-base)}.topic-card:hover .topic-title{color:var(--accent-cyan);text-shadow:0 0 10px rgba(0,212,255,.5)}.topic-description{font-size:clamp(.75rem,.85vw,.8rem);color:var(--text-secondary);margin:0;flex:1;position:relative;z-index:1;transition:all var(--transition-base)}.topic-card:hover .topic-description{color:var(--text-primary)}.topic-arrow{width:30px;height:30px;display:flex;align-items:center;justify-content:center;opacity:0;transform:translate(-10px);transition:all var(--transition-base)}.topic-arrow svg{width:24px;height:24px;color:var(--primary-blue)}.topic-card:hover .topic-arrow{opacity:1;transform:translate(0)}.btn-back{display:inline-flex;align-items:center;gap:.65rem;padding:.85rem 1.75rem;background:#0066ff1a;color:var(--text-primary);border:2px solid var(--primary-blue);border-radius:var(--radius-md);font-family:var(--font-heading);font-weight:600;font-size:.95rem;cursor:pointer;transition:all var(--transition-base);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.btn-back:hover{background:var(--primary-blue);transform:translate(-6px);box-shadow:0 8px 24px #0066ff4d}@media(max-width:1400px){.topics-grid{grid-template-columns:repeat(3,1fr)}}@media(max-width:1200px){.preview-list,.topics-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:768px){.preview-list,.topics-grid{grid-template-columns:1fr}}@media(max-height:700px){.main-content{padding:2rem}.logo-icon{width:70px;height:70px}.logo-icon svg{width:42px;height:42px}.topics-grid{gap:1.5rem}.topic-card{padding:1.5rem}}.author-btn{position:fixed;bottom:2rem;right:2rem;width:60px;height:60px;border-radius:50%;background:var(--gradient-primary);border:none;color:#fff;cursor:pointer;box-shadow:0 8px 24px #06f6;transition:all var(--transition-base);z-index:100;display:flex;align-items:center;justify-content:center}.author-btn svg{width:28px;height:28px}.author-btn:hover{transform:translateY(-4px) scale(1.05);box-shadow:0 12px 32px #0066ff80}.modal-overlay{position:fixed;inset:0;background:#0a0e1ae6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .3s ease-out}.modal-content{background:#141824f2;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-xl);padding:clamp(1.5rem,2vw,2rem);max-width:500px;width:90%;box-shadow:var(--shadow-lg);position:relative;animation:scaleIn .3s ease-out}@keyframes scaleIn{0%{transform:scale(.9);opacity:0}to{transform:scale(1);opacity:1}}.modal-close{position:absolute;top:1rem;right:1rem;width:36px;height:36px;border-radius:50%;background:#ffffff1a;border:none;color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-base)}.modal-close svg{width:20px;height:20px}.modal-close:hover{background:#f003;color:#f44;transform:rotate(90deg)}.modal-header{display:flex;flex-direction:column;align-items:center;gap:1rem;margin-bottom:2rem;padding-bottom:1.5rem;border-bottom:1px solid rgba(255,255,255,.1)}.author-avatar{width:80px;height:80px;border-radius:50%;background:var(--gradient-primary);display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:var(--shadow-glow)}.author-avatar svg{width:45px;height:45px}.modal-title{font-family:var(--font-heading);font-size:clamp(1.5rem,2vw,1.8rem);margin:0;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.author-info{display:flex;flex-direction:column;gap:1.25rem}.info-item{display:flex;gap:1rem;align-items:flex-start;padding:1rem;background:#0066ff0d;border:1px solid rgba(0,102,255,.15);border-radius:var(--radius-md);transition:all var(--transition-base)}.info-item:hover{background:#0066ff1a;border-color:#0066ff4d;transform:translate(4px)}.info-icon{width:40px;height:40px;border-radius:var(--radius-md);background:#0066ff26;border:1px solid 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ease-out}.topic-detail-header{display:flex;flex-direction:column;gap:1.5rem;animation:fadeInUp .6s ease-out}.topic-detail-title{display:flex;align-items:center;gap:1rem;padding:1.5rem;background:#141824cc;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg)}.topic-detail-icon{font-size:clamp(2.5rem,3vw,3rem);filter:drop-shadow(0 0 15px rgba(0,102,255,.5));animation:iconFloat 3s ease-in-out infinite}@keyframes iconFloat{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.topic-detail-title 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