:root{--primary-color:#1e3a8a;--secondary-color:#6b7280;--accent-color:#d97706;--background-color:#ffffff;--text-color:#1f2937;--border-color:#e5e7eb;--success-color:#059669;--warning-color:#d97706;--error-color:#dc2626}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,segoe ui,Roboto,helvetica neue,Arial,sans-serif;line-height:1.6;color:var(--text-color);background-color:var(--background-color);font-size:16px}.container{max-width:1200px;margin:0 auto;padding:0 20px}.site-header{background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:1000;transition:all .3s ease}.header-content{display:flex;align-items:center;justify-content:space-between;padding:1rem 0}.logo-text{font-size:1.5rem;font-weight:700;color:var(--primary-color);text-decoration:none}.logo a{text-decoration:none}.main-nav .nav-list{display:flex;list-style:none;gap:2rem}.nav-link{color:var(--text-color);text-decoration:none;font-weight:500;transition:color .3s ease;position:relative}.nav-link:hover{color:var(--primary-color)}.nav-link::after{content:'';position:absolute;bottom:-5px;left:0;width:0;height:2px;background-color:var(--primary-color);transition:width .3s ease}.nav-link:hover::after{width:100%}.mobile-menu-toggle{display:none;flex-direction:column;background:0 0;border:none;cursor:pointer;padding:.5rem}.mobile-menu-toggle span{width:25px;height:3px;background-color:var(--text-color);margin:3px 0;transition:.3s}.hero{background:linear-gradient(135deg,var(--primary-color),#1e40af);color:#fff;padding:120px 0;text-align:center;position:relative;overflow:hidden}.hero::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" 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h2{text-align:center;font-size:2.5rem;margin-bottom:3rem;color:var(--primary-color)}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:2rem}.feature-card{background:#fff;padding:3rem 2rem;border-radius:16px;box-shadow:0 4px 6px rgba(0,0,0,5%);text-align:center;transition:all .3s ease;border:1px solid var(--border-color)}.feature-card:hover{transform:translateY(-5px);box-shadow:0 10px 25px rgba(0,0,0,.1)}.feature-card h3{color:var(--primary-color);margin-bottom:1rem;font-size:1.5rem;font-weight:600}.feature-card p{color:var(--secondary-color);line-height:1.7}.tools-overview{padding:100px 0}.tools-overview h2{text-align:center;font-size:2.5rem;margin-bottom:3rem;color:var(--primary-color)}.tools-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(400px,1fr));gap:2rem}.tool-card{background:#fff;border:1px solid var(--border-color);border-radius:16px;padding:2.5rem;text-align:center;transition:all .3s ease;position:relative;overflow:hidden}.tool-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary-color),var(--accent-color))}.tool-card:hover{transform:translateY(-5px);box-shadow:0 15px 35px rgba(0,0,0,.1)}.tool-icon{width:80px;height:80px;border-radius:50%;margin:0 auto 1.5rem;display:flex;align-items:center;justify-content:center;position:relative}.tool-icon img{width:40px;height:40px;filter:brightness(0)invert(1)}.tool-card h3{color:var(--primary-color);margin-bottom:1rem;font-size:1.5rem;font-weight:600}.tool-card p{color:var(--secondary-color);margin-bottom:2rem;line-height:1.6}.tool-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.btn-primary,.btn-secondary{padding:12px 24px;border-radius:8px;text-decoration:none;font-weight:500;transition:all .3s ease;display:inline-block}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover{background-color:#1e40af;transform:translateY(-1px)}.btn-secondary{background-color:transparent;color:var(--primary-color);border:2px solid var(--primary-color)}.btn-secondary:hover{background-color:var(--primary-color);color:#fff}.about-preview{padding:100px 0;background:linear-gradient(135deg,#f8fafc,#e2e8f0)}.about-content{text-align:center;max-width:800px;margin:0 auto}.about-content h2{font-size:2.5rem;margin-bottom:1.5rem;color:var(--primary-color)}.about-content p{font-size:1.2rem;line-height:1.8;color:var(--secondary-color);margin-bottom:2rem}.site-footer{background-color:var(--primary-color);color:#fff;padding:3rem 0 1rem}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;margin-bottom:2rem}.footer-section h3,.footer-section h4{margin-bottom:1rem;color:var(--accent-color)}.footer-section ul{list-style:none}.footer-section ul li{margin-bottom:.5rem}.footer-section a{color:#fff;text-decoration:none;transition:color .3s ease}.footer-section a:hover{color:var(--accent-color)}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:1rem;text-align:center;color:rgba(255,255,255,.7)}.download-hero{background:linear-gradient(135deg,var(--primary-color),#1e40af);color:#fff;padding:80px 0;text-align:center}.download-hero h1{font-size:3rem;margin-bottom:1rem;font-weight:700}.download-hero .subtitle{font-size:1.25rem;opacity:.9;max-width:600px;margin:0 auto}.download-content{padding:80px 0}.download-section{background:#fff;border-radius:16px;padding:3rem;margin-bottom:3rem;box-shadow:0 4px 6px rgba(0,0,0,5%);border:1px solid var(--border-color)}.tool-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;padding-bottom:1rem;border-bottom:2px solid var(--border-color)}.tool-header h2{color:var(--primary-color);font-size:2rem}.tool-meta{display:flex;gap:1rem;align-items:center}.status{padding:.5rem 1rem;border-radius:20px;font-size:.875rem;font-weight:600;text-transform:uppercase}.status.beta{background-color:var(--warning-color);color:#fff}.status.stable{background-color:var(--success-color);color:#fff}.version{color:var(--primary-color);font-weight:600}.date{color:var(--secondary-color);font-size:.875rem}.version-info{display:grid;grid-template-columns:1fr 1fr;gap:3rem}.version-details h3{color:var(--primary-color);margin-bottom:1.5rem;font-size:1.5rem}.changes h4,.release-notes h4{color:var(--text-color);margin-bottom:1rem;font-size:1.1rem}.changes ul{list-style:none;margin-bottom:2rem}.changes li{padding:.5rem 0;border-bottom:1px solid var(--border-color);position:relative;padding-left:1.5rem}.changes li::before{content:'✓';position:absolute;left:0;color:var(--success-color);font-weight:700}.release-notes p{color:var(--secondary-color);line-height:1.7;margin-bottom:2rem}.stats{display:flex;gap:2rem}.stat-item{text-align:center}.stat-label{display:block;color:var(--secondary-color);font-size:.875rem;margin-bottom:.5rem}.stat-value{display:block;color:var(--primary-color);font-size:1.5rem;font-weight:700}.download-options h3{color:var(--primary-color);margin-bottom:1.5rem;font-size:1.5rem}.platform-grid{display:grid;gap:1.5rem}.platform-card{border:1px solid var(--border-color);border-radius:12px;padding:1.5rem;transition:all .3s ease}.platform-card:hover{border-color:var(--primary-color);box-shadow:0 4px 12px rgba(30,58,138,.1)}.platform-header{display:flex;align-items:center;gap:1rem;margin-bottom:1rem}.platform-icon{font-size:2rem;width:60px;height:60px;background:var(--primary-color);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff}.platform-info h4{color:var(--text-color);margin-bottom:.25rem}.architecture{color:var(--secondary-color);font-size:.875rem}.download-details{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem}.file-info{display:flex;gap:1rem;align-items:center}.size{color:var(--primary-color);font-weight:600}.format{color:var(--secondary-color);font-size:.875rem;background:var(--border-color);padding:.25rem .5rem;border-radius:4px}.requirements{color:var(--secondary-color);font-size:.75rem;max-width:200px}.download-actions{display:flex;gap:.75rem}.btn-download{background:var(--success-color);color:#fff;padding:.75rem 1.5rem;border-radius:8px;text-decoration:none;font-weight:600;transition:all .3s ease;display:flex;flex-direction:column;align-items:center;min-width:100px}.btn-download:hover{background:#047857;transform:translateY(-1px)}.btn-download span{font-size:1rem}.btn-download small{font-size:.75rem;opacity:.8}.btn-checksum{background:0 0;color:var(--primary-color);border:1px solid var(--primary-color);padding:.75rem 1rem;border-radius:8px;cursor:pointer;font-weight:500;transition:all .3s ease}.btn-checksum:hover{background:var(--primary-color);color:#fff}.system-requirements{padding:80px 0;background-color:#f8fafc}.system-requirements h2{text-align:center;font-size:2.5rem;margin-bottom:3rem;color:var(--primary-color)}.requirements-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(400px,1fr));gap:2rem}.requirement-card{background:#fff;padding:2rem;border-radius:12px;border:1px solid var(--border-color)}.requirement-card h3{color:var(--primary-color);margin-bottom:1.5rem;font-size:1.25rem}.requirement-card ul{list-style:none}.requirement-card li{padding:.5rem 0;border-bottom:1px solid var(--border-color)}.requirement-card li:last-child{border-bottom:none}.download-help{padding:80px 0}.download-help h2{text-align:center;font-size:2.5rem;margin-bottom:3rem;color:var(--primary-color)}.help-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem}.help-item{background:#fff;padding:2rem;border-radius:12px;border:1px solid var(--border-color)}.help-item h3{color:var(--primary-color);margin-bottom:1rem;font-size:1.25rem}.help-item ol,.help-item ul{margin-left:1.5rem}.help-item li{margin-bottom:.5rem;color:var(--secondary-color)}.checksum-example{background:#f8fafc;padding:1rem;border-radius:8px;margin-top:1rem}.checksum-example code{background:var(--text-color);color:#fff;padding:.5rem;border-radius:4px;display:block;margin-bottom:.5rem;font-family:monaco,menlo,monospace}.modal{display:none;position:fixed;z-index:10000;left:0;top:0;width:100%;height:100%;background-color:rgba(0,0,0,.5)}.modal-content{background-color:#fff;margin:15% auto;padding:2rem;border-radius:12px;width:90%;max-width:500px;position:relative}.close{color:var(--secondary-color);float:right;font-size:2rem;font-weight:700;cursor:pointer;position:absolute;right:1rem;top:1rem}.close:hover{color:var(--text-color)}.checksum-content{margin-top:1rem}.checksum-content code{background:#f8fafc;padding:1rem;border-radius:8px;display:block;margin:1rem 0;font-family:monaco,menlo,monospace;word-break:break-all}.checksum-note{color:var(--secondary-color);font-size:.875rem;margin-top:1rem}@media(max-width:768px){.hero h1{font-size:2.5rem}.hero .subtitle{font-size:1.2rem}.hero .description{font-size:1.1rem}.features-grid,.tools-grid{grid-template-columns:1fr}.tool-actions{flex-direction:column}.main-nav{display:none}.mobile-menu-toggle{display:flex}.features h2,.tools-overview h2,.about-content h2{font-size:2rem}.download-hero h1{font-size:2rem}.version-info{grid-template-columns:1fr;gap:2rem}.tool-header{flex-direction:column;gap:1rem;align-items:flex-start}.tool-meta{flex-wrap:wrap}.download-details{flex-direction:column;align-items:flex-start}.download-actions{width:100%;justify-content:stretch}.btn-download,.btn-checksum{flex:1;text-align:center}}@media(max-width:480px){.container{padding:0 15px}.hero{padding:80px 0}.hero h1{font-size:2rem}.feature-card,.tool-card{padding:2rem 1.5rem}.download-section{padding:2rem 1.5rem}.platform-card{padding:1rem}.platform-header{flex-direction:column;text-align:center}}