:root{--primary: #2563eb;--primary-dark: #1d4ed8;--primary-light: #3b82f6;--secondary: #10b981;--dark: #0f172a;--gray-dark: #334155;--gray: #64748b;--gray-light: #cbd5e1;--light: #f8fafc;--white: #ffffff;--shadow: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--transition: all .3s ease;--radius: 6px;--radius-lg: 12px;--header-height: 80px}*{margin:0;padding:0;box-sizing:border-box}.loading-screen{height:100vh;display:flex;flex-direction:column;justify-content:center;align-items:center;background:#dadde0;color:#1b1818;font-family:Arial,sans-serif}.loader{width:60px;height:60px;border:6px solid rgba(255,255,255,.2);border-top-color:#0a352c;border-radius:50%;animation:spin 1s linear infinite;margin-bottom:12px}@keyframes spin{to{transform:rotate(360deg)}}.loading-screen p{font-size:1.2rem;letter-spacing:1px;color:#1c2624}html{font-size:62.5%;scroll-behavior:smooth}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;font-size:1.6rem;line-height:1.7;color:var(--gray-dark);background-color:var(--light)}a{text-decoration:none;color:inherit;transition:var(--transition)}ul,ol{list-style:none}img{max-width:100%;height:auto;display:block}button{background:none;border:none;cursor:pointer;font-family:inherit}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 2rem}.section-header{text-align:center;margin-bottom:5rem}.section-header h2{font-size:3.6rem;font-weight:700;color:var(--dark);margin-bottom:1.2rem;line-height:1.2}.section-header p{font-size:1.8rem;color:var(--gray);max-width:700px;margin:0 auto}.btn{display:inline-block;padding:1.2rem 2.4rem;font-size:1.6rem;font-weight:500;text-align:center;border-radius:var(--radius);transition:var(--transition);cursor:pointer}.btn-block{display:block;width:100%}.btn-lg{padding:1.4rem 3rem;font-size:1.8rem}.btn-primary{background-color:var(--primary);color:var(--white);border:2px solid var(--primary)}.btn-primary:hover{background-color:var(--primary-dark);border-color:var(--primary-dark)}.btn-outline{background-color:transparent;color:var(--primary);border:2px solid var(--primary)}.btn-outline:hover{background-color:var(--primary);color:var(--white)}.btn-login{color:var(--primary);padding:1.2rem 2rem}.btn-login:hover{color:var(--primary-dark)}.header{position:fixed;top:0;left:0;width:100%;height:var(--header-height);z-index:1000;background-color:transparent;transition:var(--transition)}.header.scrolled{background-color:var(--white);box-shadow:var(--shadow)}.header-wrapper{display:flex;justify-content:space-between;align-items:center;height:100%}.logo{display:flex;align-items:center;gap:1rem;font-size:2.2rem;font-weight:700;color:var(--dark)}.logo img{height:3.6rem;width:auto}.nav-toggle{display:none}.nav{display:flex;align-items:center}.nav-list{display:flex;gap:2.4rem;margin-right:3rem}.nav-link{font-size:1.6rem;font-weight:500;color:var(--dark);position:relative}.nav-link:hover{color:var(--primary)}.nav-link:after{content:"";position:absolute;bottom:-5px;left:0;width:0;height:2px;background-color:var(--primary);transition:var(--transition)}.nav-link:hover:after{width:100%}.auth-buttons{display:flex;gap:1.6rem}.hero{min-height:100vh;padding-top:var(--header-height);display:flex;align-items:center;background:linear-gradient(to bottom,#eff6ffcc,#eff6ff66)}.hero-wrapper{display:grid;grid-template-columns:1fr 1fr;gap:6rem;align-items:center}.hero-content{max-width:540px}.hero-content h1{font-size:5rem;font-weight:800;line-height:1.2;color:var(--dark);margin-bottom:1.6rem}.hero-content h2{font-size:2.4rem;font-weight:700;color:var(--primary);margin-bottom:2.4rem}.hero-content p{font-size:1.8rem;margin-bottom:3.2rem}.hero-buttons{display:flex;gap:2rem}.hero-image{display:flex;justify-content:center;align-items:center}.hero-image img{max-width:100%;max-height:500px}.stats{padding:4rem 0;background-color:var(--white);box-shadow:var(--shadow)}.stats-wrapper{display:flex;justify-content:space-between;gap:2rem;flex-wrap:wrap}.stat-item{flex:1;min-width:150px;text-align:center;padding:2rem 1rem;border-right:1px solid var(--gray-light)}.stat-item:last-child{border-right:none}.stat-number{font-size:3.6rem;font-weight:700;color:var(--primary);margin-bottom:.5rem}.stat-label{font-size:1.6rem;color:var(--gray);font-weight:500}.features{padding:10rem 0;background-color:var(--light)}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:3rem}.feature-card{background-color:var(--white);border-radius:var(--radius);padding:3rem;box-shadow:var(--shadow);transition:var(--transition);height:100%}.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}.feature-icon{width:7rem;height:7rem;display:flex;align-items:center;justify-content:center;background-color:#2563eb1a;border-radius:50%;margin-bottom:2rem}.feature-icon img{width:3.5rem;height:3.5rem}.feature-card h3{font-size:2rem;font-weight:600;color:var(--dark);margin-bottom:1.2rem}.feature-card p{color:var(--gray)}.how-it-works{padding:10rem 0;background-color:var(--white)}.steps{display:flex;flex-direction:column;gap:3rem;max-width:800px;margin:0 auto}.step{display:flex;align-items:flex-start;gap:2rem}.step-number{flex-shrink:0;width:5rem;height:5rem;display:flex;align-items:center;justify-content:center;background-color:var(--primary);color:var(--white);border-radius:50%;font-size:2.4rem;font-weight:700}.step-content{flex-grow:1}.step-content h3{font-size:2.2rem;font-weight:600;color:var(--dark);margin-bottom:1rem}.step-content p{color:var(--gray)}.comparison{padding:10rem 0;background-color:#f0f9ff}.comparison-table{max-width:900px;margin:0 auto;background-color:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}.table-header{display:grid;grid-template-columns:2fr 1fr 1fr;background-color:var(--primary);color:var(--white);font-weight:600}.header-cell{padding:1.6rem 2rem;text-align:center}.header-cell.feature-cell{text-align:left}.table-row{display:grid;grid-template-columns:2fr 1fr 1fr;border-bottom:1px solid var(--gray-light)}.table-row:last-child{border-bottom:none}.table-cell{padding:1.6rem 2rem;text-align:center;display:flex;align-items:center;justify-content:center}.table-cell.feature-cell{justify-content:flex-start;font-weight:500}.positive{color:var(--secondary);font-weight:500}.negative{color:#ef4444;font-weight:500}.pricing{padding:10rem 0;background-color:var(--light)}.pricing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:3rem;max-width:1100px;margin:0 auto}.pricing-card{background-color:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;position:relative;transition:var(--transition)}.pricing-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}.pricing-card.featured{border:2px solid var(--primary);transform:scale(1.05)}.pricing-card.featured:hover{transform:scale(1.05) translateY(-5px)}.pricing-badge{position:absolute;top:1.2rem;right:1.2rem;background-color:var(--primary);color:var(--white);padding:.4rem 1rem;font-size:1.2rem;font-weight:500;border-radius:2rem}.pricing-header{padding:3rem;text-align:center;border-bottom:1px solid var(--gray-light)}.pricing-header h3{font-size:2.4rem;font-weight:700;color:var(--dark);margin-bottom:1.2rem}.price{display:inline-flex;align-items:baseline}.price-value{font-size:4rem;font-weight:700;color:var(--primary)}.price-period{font-size:1.6rem;color:var(--gray);margin-left:.5rem}.pricing-features{padding:3rem;display:flex;flex-direction:column;gap:1.6rem}.pricing-features li{position:relative;padding-left:2.4rem;color:var(--gray-dark)}.pricing-features li:before{content:"✓";position:absolute;left:0;color:var(--primary);font-weight:700}.pricing-card .btn{margin:0 3rem 3rem}.technology{padding:8rem 0;background-color:var(--white)}.tech-logos{display:flex;justify-content:center;flex-wrap:wrap;gap:5rem;margin-top:4rem}.tech-logo{display:flex;flex-direction:column;align-items:center;gap:1rem}.tech-logo img{width:8rem;height:8rem;opacity:.8;transition:var(--transition)}.tech-logo:hover img{opacity:1}.tech-logo span{font-size:1.6rem;font-weight:500;color:var(--gray)}.testimonials{padding:10rem 0;background-color:#f0f9ff}.testimonials-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:3rem}.testimonial-card{background-color:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);padding:3rem;transition:var(--transition)}.testimonial-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}.testimonial-content{position:relative;padding-bottom:2.4rem;margin-bottom:2.4rem;border-bottom:1px solid var(--gray-light)}.testimonial-content p{font-style:italic;color:var(--gray-dark)}.testimonial-content:before{content:'"';position:absolute;top:-1.5rem;left:-.8rem;font-size:6rem;line-height:1;color:var(--primary-light);opacity:.3;font-family:serif}.testimonial-author{display:flex;align-items:center;gap:1.6rem}.author-avatar{width:5rem;height:5rem;border-radius:50%;overflow:hidden}.author-info h4{font-size:1.8rem;font-weight:600;color:var(--dark)}.author-info p{font-size:1.4rem;color:var(--gray)}.faq{padding:10rem 0;background-color:var(--light)}.faq-accordion{max-width:800px;margin:0 auto}.accordion-item{background-color:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:1.6rem;overflow:hidden}.accordion-header{width:100%;display:flex;justify-content:space-between;align-items:center;padding:2rem;font-size:1.8rem;font-weight:600;color:var(--dark);text-align:left;position:relative;cursor:pointer;transition:var(--transition)}.accordion-header:hover{color:var(--primary)}.accordion-icon{position:relative;width:1.6rem;height:1.6rem}.accordion-icon:before,.accordion-icon:after{content:"";position:absolute;background-color:var(--primary);transition:var(--transition)}.accordion-icon:before{top:50%;left:0;width:100%;height:2px;transform:translateY(-50%)}.accordion-icon:after{top:0;left:50%;width:2px;height:100%;transform:translate(-50%)}.accordion-item.active .accordion-icon:after{transform:translate(-50%) rotate(90deg);opacity:0}.accordion-content{max-height:0;overflow:hidden;transition:max-height .3s ease}.accordion-item.active .accordion-content{max-height:500px}.accordion-content p{padding:0 2rem 2rem;color:var(--gray)}.cta{padding:8rem 0;background:linear-gradient(120deg,var(--primary),var(--primary-dark));color:var(--white)}.cta-wrapper{text-align:center;max-width:800px;margin:0 auto}.cta h2{font-size:3.6rem;font-weight:700;margin-bottom:1.6rem}.cta p{font-size:1.8rem;margin-bottom:3.2rem;opacity:.9}.cta .btn-primary{background-color:var(--white);color:var(--primary);border-color:var(--white)}.cta .btn-primary:hover{background-color:transparent;color:var(--white)}.footer{padding-top:8rem;background-color:var(--dark);color:var(--gray-light)}.footer-grid{display:grid;grid-template-columns:2fr repeat(4,1fr);gap:4rem;padding-bottom:5rem}.brand-column{padding-right:2rem}.footer-logo{display:flex;align-items:center;gap:1rem;font-size:2.2rem;font-weight:700;color:var(--white);margin-bottom:1.6rem}.footer-logo img{height:3.6rem;width:auto}.brand-column p{margin-bottom:2.4rem;opacity:.8}.social-links{display:flex;gap:1.6rem}.social-links a{display:flex;align-items:center;justify-content:center;width:4rem;height:4rem;border-radius:50%;background-color:#ffffff1a;transition:var(--transition)}.social-links a:hover{background-color:var(--primary)}.social-links img{width:2rem;height:2rem;opacity:.8}.footer-column h4{font-size:1.8rem;font-weight:600;color:var(--white);margin-bottom:2rem}.footer-column ul{display:flex;flex-direction:column;gap:1.2rem}.footer-column ul li a{color:var(--gray-light);transition:var(--transition)}.footer-column ul li a:hover{color:var(--white);transform:translate(5px)}.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding:2.4rem 0;border-top:1px solid rgba(255,255,255,.1)}.copyright{font-size:1.4rem}.footer-utilities{display:flex;align-items:center;gap:2.4rem}.language-selector{background-color:#ffffff1a;color:var(--gray-light);border:none;padding:.8rem 1.6rem;border-radius:var(--radius);font-size:1.4rem;cursor:pointer}.footer-link{font-size:1.4rem;color:var(--gray-light)}.footer-link:hover{color:var(--white)}@media (max-width: 1200px){.footer-grid{grid-template-columns:repeat(2,1fr)}.brand-column{grid-column:span 2}}@media (max-width: 992px){html{font-size:56.25%}.hero-wrapper{grid-template-columns:1fr;text-align:center;gap:4rem}.hero-content{max-width:700px;margin:0 auto}.hero-buttons{justify-content:center}.pricing-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.pricing-card.featured{transform:none}.pricing-card.featured:hover{transform:translateY(-5px)}}@media (max-width: 768px){html{font-size:50%}.header{height:70px}.nav-toggle{display:block;width:3rem;height:2.4rem;position:relative;z-index:2000}.nav-toggle span{display:block;width:100%;height:3px;background-color:var(--dark);position:absolute;left:0;transition:var(--transition)}.nav-toggle span:nth-child(1){top:0}.nav-toggle span:nth-child(2){top:50%;transform:translateY(-50%)}.nav-toggle span:nth-child(3){bottom:0}.nav-toggle.active span:nth-child(1){top:50%;transform:translateY(-50%) rotate(45deg)}.nav-toggle.active span:nth-child(2){opacity:0}.nav-toggle.active span:nth-child(3){bottom:50%;transform:translateY(50%) rotate(-45deg)}.nav{position:fixed;top:0;right:-100%;width:80%;max-width:400px;height:100vh;background-color:var(--white);box-shadow:-5px 0 15px #0000001a;flex-direction:column;justify-content:flex-start;padding:10rem 3rem 3rem;transition:right .3s ease;z-index:1500}.nav.active{right:0}.nav-list{flex-direction:column;margin-right:0;margin-bottom:3rem;width:100%}.nav-link{display:block;padding:1.2rem 0;font-size:1.8rem}.auth-buttons{flex-direction:column;width:100%;gap:1.2rem}.auth-buttons .btn{width:100%}.comparison-table{overflow-x:auto}.footer-grid{grid-template-columns:1fr}.brand-column{grid-column:1}.footer-bottom{flex-direction:column;gap:2rem}}@media (max-width: 576px){.section-header h2{font-size:3rem}.hero-content h1{font-size:4rem}.stats-wrapper{flex-direction:column}.stat-item{border-right:none;border-bottom:1px solid var(--gray-light);padding:2rem 0}.stat-item:last-child{border-bottom:none}.hero-buttons{flex-direction:column;width:100%}.hero-buttons .btn{width:100%}.steps{gap:4rem}.step{flex-direction:column;align-items:center;text-align:center}.cta h2{font-size:3rem}}.dashboard-container{display:flex;flex-direction:column;height:100vh;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}.dashboard-header{display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;background-color:#2c3e50;color:#fff}.logo{font-size:1.5rem;font-weight:700}.user-info{display:flex;align-items:center;gap:1rem}.wallet-address{background-color:#ffffff1a;padding:.3rem .6rem;border-radius:4px;font-size:.8rem;font-family:monospace}.logout-btn{background-color:transparent;border:1px solid white;color:#fff;padding:.5rem 1rem;border-radius:4px;cursor:pointer;transition:all .3s}.logout-btn:hover{background-color:#fff;color:#2c3e50}.dashboard-content{display:flex;flex:1;overflow:hidden}.sidebar{width:250px;background-color:#f5f5f5;padding:1rem;display:flex;flex-direction:column;border-right:1px solid #ddd}.storage-info{margin-bottom:2rem}.storage-bar{height:8px;background-color:#e0e0e0;border-radius:4px;overflow:hidden;margin:.5rem 0}.storage-used{height:100%;background-color:#3498db;border-radius:4px}.sidebar-nav ul{list-style:none;padding:0;margin:0}.sidebar-nav li{padding:.75rem 1rem;margin-bottom:.5rem;border-radius:4px;cursor:pointer;transition:all .2s}.sidebar-nav li:hover{background-color:#e0e0e0}.sidebar-nav li.active{background-color:#3498db;color:#fff}.content-area{flex:1;padding:1rem;overflow-y:auto;position:relative}.actions-bar{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem;padding-bottom:1rem;border-bottom:1px solid #eee}.path-navigation{display:flex;align-items:center;gap:.5rem}.nav-btn{background-color:#f5f5f5;border:1px solid #ddd;padding:.5rem;border-radius:4px;cursor:pointer}.nav-btn:disabled{opacity:.5;cursor:default}.current-path{font-family:monospace;padding:.5rem;background-color:#f5f5f5;border-radius:4px}.action-buttons{display:flex;gap:.5rem}.action-btn{padding:.5rem 1rem;border:none;border-radius:4px;color:#fff;cursor:pointer}.action-btn.upload{background-color:#3498db}.action-btn.create-folder{background-color:#2ecc71}.files-container{margin-top:1rem}.folders-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:1rem;margin-bottom:2rem}.folder-item{display:flex;flex-direction:column;align-items:center;padding:1rem;border:1px solid #eee;border-radius:8px;transition:all .2s}.folder-item:hover{box-shadow:0 5px 15px #0000001a}.folder-icon{font-size:2.5rem;margin-bottom:.5rem;cursor:pointer}.folder-name{font-size:.9rem;text-align:center;margin-bottom:.5rem;word-break:break-word}.folder-actions{width:100%;display:flex;justify-content:center}.files-table-container{overflow-x:auto}.files-table{width:100%;border-collapse:collapse}.files-table th,.files-table td{padding:.75rem;text-align:left;border-bottom:1px solid #eee}.files-table th{font-weight:600;color:#555;background-color:#f9f9f9}.file-name{display:flex;align-items:center;gap:.5rem}.file-icon{font-size:1.25rem}.file-actions{display:flex;gap:.5rem}.hash-cell{max-width:150px;overflow:hidden;text-overflow:ellipsis}.ipfs-hash{font-family:monospace;background-color:#f5f5f5;padding:.2rem .4rem;border-radius:4px;cursor:pointer}.item-action{padding:.3rem .5rem;border:none;border-radius:4px;font-size:.8rem;cursor:pointer;color:#fff}.item-action.view{background-color:#3498db}.item-action.share{background-color:#9b59b6}.item-action.delete{background-color:#e74c3c}.item-action.favorite{background-color:#64ec4c}.no-items{color:#999;font-style:italic}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000}.modal{background-color:#fff;border-radius:8px;width:90%;max-width:500px;padding:1.5rem;box-shadow:0 5px 20px #0003}.modal h2{margin-top:0;margin-bottom:1.5rem;color:#2c3e50}.modal-content{margin-bottom:1.5rem}.modal-content input[type=text],.modal-content input[type=email]{width:100%;padding:.75rem;border:1px solid #ddd;border-radius:4px;margin-top:.5rem}.file-info{margin-top:1rem;padding:1rem;background-color:#f9f9f9;border-radius:4px}.progress-container{margin-top:1rem;background-color:#f0f0f0;border-radius:4px;height:20px;position:relative;overflow:hidden}.progress-bar{height:100%;background-color:#3498db;transition:width .3s ease}.progress-text{position:absolute;top:0;left:0;right:0;bottom:0;display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:700;color:#333}.modal-actions{display:flex;justify-content:flex-end;gap:.5rem}.modal-btn{padding:.5rem 1rem;border:none;border-radius:4px;cursor:pointer}.modal-btn.cancel{background-color:#f5f5f5;color:#333}.modal-btn.upload{background-color:#3498db;color:#fff}.modal-btn.create{background-color:#2ecc71;color:#fff}.modal-btn.share{background-color:#9b59b6;color:#fff}.modal-btn:disabled{opacity:.5;cursor:not-allowed}.loading-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background-color:#fffc;display:flex;flex-direction:column;justify-content:center;align-items:center;z-index:100}.loading-spinner{border:5px solid #f3f3f3;border-top:5px solid #3498db;border-radius:50%;width:50px;height:50px;animation:spin 1s linear infinite;margin-bottom:1rem}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media (max-width: 768px){.dashboard-content{flex-direction:column}.sidebar{width:100%;border-right:none;border-bottom:1px solid #ddd}.actions-bar{flex-direction:column;gap:1rem;align-items:flex-start}.action-buttons{width:100%}.action-btn{flex:1}.folders-grid{grid-template-columns:repeat(auto-fill,minmax(120px,1fr))}}.ipfs-status{display:flex;align-items:center;margin-top:20px;padding:10px}.status-indicator{width:10px;height:10px;border-radius:50%;margin-right:10px}.connected{background-color:#4caf50}.disconnected{background-color:#f44336}