:root{--font-sans:system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--bg-main:#f8fafc;--bg-card:#fff;--color-primary:#2563eb;--color-primary-hover:#1d4ed8;--color-accent:#4f46e5;--color-text-main:#0f172a;--color-text-muted:#475569;--color-border:#e2e8f0;--max-width:1200px;--transition:all .3s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-main);color:var(--color-text-main);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.6}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px}a{color:var(--color-primary);transition:var(--transition);text-decoration:none}a:hover{color:var(--color-primary-hover)}.lang-bar-container{border-bottom:1px solid var(--color-border);z-index:100;background-color:#f1f5f9;width:100%;position:relative}.lang-bar{white-space:nowrap;max-width:var(--max-width);scrollbar-width:none;-ms-overflow-style:none;margin:0 auto;padding:10px 24px;display:flex;overflow-x:auto}.lang-bar::-webkit-scrollbar{display:none}.lang-bar-container:hover .lang-bar{scrollbar-width:thin;scrollbar-color:#cbd5e1 transparent}.lang-bar-container:hover .lang-bar::-webkit-scrollbar{height:4px;display:block}.lang-bar-container:hover .lang-bar::-webkit-scrollbar-track{background:0 0}.lang-bar-container:hover .lang-bar::-webkit-scrollbar-thumb{background-color:#cbd5e1;border-radius:4px}.lang-bar a{color:var(--color-text-muted);transition:var(--transition);border-radius:4px;padding:2px 10px;font-size:13px;font-weight:500;display:inline-block}.lang-bar a:hover{color:var(--color-primary);background-color:#e2e8f0}header{border-bottom:1px solid var(--color-border);background-color:transparent}.header-wrapper{justify-content:space-between;align-items:center;height:80px;display:flex}.logo-link{color:var(--color-text-main);align-items:center;gap:12px;font-size:22px;font-weight:700;display:flex}.logo-img{width:32px;height:32px}.nav-links{align-items:center;gap:28px;list-style:none;display:flex}.nav-links a{color:var(--color-text-muted);font-size:15px;font-weight:600}.nav-links a:hover,.nav-links a.active{color:var(--color-primary)}.btn-it365{background:linear-gradient(135deg,#eff6ff 0%,#dbeafe 100%);border:1px solid #bfdbfe;border-radius:9999px;padding:8px 16px;color:var(--color-primary)!important;font-size:14px!important}.btn-it365:hover{background:linear-gradient(135deg,#dbeafe 0%,#bfdbfe 100%);box-shadow:0 4px 6px -1px rgba(37,99,235,.1)}.download-hero{text-align:center;padding:60px 0 40px}.download-hero h1{letter-spacing:-.02em;margin-bottom:16px;font-size:40px;font-weight:800}.download-hero p{color:var(--color-text-muted);max-width:600px;margin:0 auto;font-size:17px}.ad-slot-container{max-width:var(--max-width);margin:20px auto;padding:0 24px}.ad-slot{text-align:center;background-color:#f1f5f9;border:1px dashed #cbd5e1;border-radius:8px;padding:10px}.download-grid{grid-template-columns:repeat(3,1fr);gap:30px;margin-bottom:60px;display:grid}.download-card{background-color:var(--bg-card);border:1px solid var(--color-border);text-align:center;transition:var(--transition);border-radius:16px;flex-direction:column;align-items:center;padding:32px;display:flex}.download-card:hover{border-color:#cbd5e1;transform:translateY(-4px);box-shadow:0 20px 25px -5px rgba(0,0,0,.05),0 10px 10px -5px rgba(0,0,0,.02)}.download-card.featured{border:2px solid var(--color-primary);position:relative}.badge-featured{background-color:var(--color-primary);color:#fff;text-transform:uppercase;border-radius:9999px;padding:3px 12px;font-size:12px;font-weight:700;position:absolute;top:-12px}.os-icon{width:64px;height:64px;color:var(--color-text-main);background-color:#f1f5f9;border-radius:14px;justify-content:center;align-items:center;margin-bottom:20px;font-size:32px;display:flex}.download-card.featured .os-icon{color:var(--color-primary);background-color:#eff6ff}.download-card h2{margin-bottom:8px;font-size:22px;font-weight:700}.download-card .subtitle{color:var(--color-text-muted);margin-bottom:24px;font-size:13px}.download-card .action-box{width:100%;margin-top:auto}.btn-download{cursor:pointer;width:100%;transition:var(--transition);text-align:center;border:none;border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:12px 20px;font-size:15px;font-weight:600;display:inline-flex}.btn-blue{background:linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);color:#fff}.btn-blue:hover{color:#fff;box-shadow:0 4px 12px rgba(37,99,235,.25)}.btn-gray{color:var(--color-text-main);border:1px solid var(--color-border);background-color:#f1f5f9;margin-top:10px}.btn-gray:hover{color:var(--color-text-main);background-color:#e2e8f0}.file-info{color:var(--color-text-muted);margin-top:12px;font-size:12px}.requirements-section{background-color:var(--bg-card);border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border);margin-bottom:60px;padding:60px 0}.requirements-section h2{text-align:center;margin-bottom:40px;font-size:28px;font-weight:800}.req-table{border-collapse:collapse;width:100%;margin-top:20px;font-size:15px}.req-table th,.req-table td{text-align:left;border-bottom:1px solid var(--color-border);padding:16px 20px}.req-table th{color:var(--color-text-main);background-color:#f8fafc;font-weight:700}.req-table tr:hover{background-color:#faf5ff}.info-section{padding-bottom:60px}.info-grid{grid-template-columns:repeat(2,1fr);gap:40px;display:grid}.info-box h3{margin-bottom:16px;font-size:18px;font-weight:700}.info-box p{color:var(--color-text-muted);margin-bottom:12px;font-size:14px;line-height:1.7}footer{color:#94a3b8;background-color:#0f172a;border-top:1px solid #1e293b;padding:60px 0 30px}.footer-top{justify-content:space-between;align-items:flex-start;margin-bottom:40px;display:flex}.footer-brand h4{color:#fff;margin-bottom:12px;font-size:20px;font-weight:700}.footer-brand p{max-width:300px;font-size:14px}.footer-links-group{gap:80px;display:flex}.footer-col h5{color:#fff;margin-bottom:16px;font-size:15px;font-weight:600}.footer-col ul{list-style:none}.footer-col li{margin-bottom:10px}.footer-col a{color:#94a3b8;font-size:14px}.footer-col a:hover{color:#fff}.footer-bottom{border-top:1px solid #1e293b;justify-content:space-between;align-items:center;padding-top:30px;font-size:13px;display:flex}.footer-bottom-links{gap:20px;display:flex}.footer-bottom-links a{color:#94a3b8}.footer-bottom-links a:hover{color:#fff}@media (max-width:992px){.download-grid{grid-template-columns:repeat(2,1fr)}.download-card.featured{grid-column:span 2}}@media (max-width:768px){.header-wrapper{flex-direction:column;gap:12px;height:auto;padding:16px 0}.nav-links{gap:16px}.download-grid{grid-template-columns:1fr}.download-card.featured{grid-column:span 1}.info-grid{grid-template-columns:1fr}.req-table th,.req-table td{padding:12px;font-size:13px}.footer-top{flex-direction:column;gap:32px}.footer-links-group{flex-direction:column;gap:24px;width:100%}.footer-bottom{text-align:center;flex-direction:column;gap:16px}}