:root{--primary-color:#3b82f6;--primary-hover:#2563eb;--primary-light:#eff6ff;--text-main:#0f172a;--text-muted:#475569;--bg-main:#f8fafc;--bg-card:#fff;--border-color:#e2e8f0;--max-width:1200px;--transition:all .3s cubic-bezier(.4, 0, .2, 1);--shadow-sm:0 1px 3px rgba(0,0,0,.05), 0 1px 2px rgba(0,0,0,.02);--shadow-md:0 4px 6px -1px rgba(15,23,42,.05), 0 2px 4px -2px rgba(15,23,42,.05);--shadow-lg:0 10px 15px -3px rgba(15,23,42,.05), 0 4px 6px -4px rgba(15,23,42,.05)}*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{color:var(--text-main);background-color:var(--bg-main);-webkit-font-smoothing:antialiased;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans,Ubuntu,Cantarell,Helvetica Neue,Arial,sans-serif;line-height:1.6;overflow-x:hidden}a{color:var(--primary-color);transition:var(--transition);text-decoration:none}a:hover{color:var(--primary-hover)}img{max-width:100%;height:auto;display:block}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px}.lang-bar-container{border-bottom:1px solid var(--border-color);background-color:#fff;width:100%}.lang-bar{white-space:nowrap;max-width:var(--max-width);scrollbar-width:thin;scrollbar-color:transparent transparent;gap:16px;margin:0 auto;padding:10px 24px;display:flex;overflow-x:auto}.lang-bar::-webkit-scrollbar{background-color:transparent;height:4px}.lang-bar::-webkit-scrollbar-thumb{background-color:transparent;border-radius:4px}.lang-bar-container:hover .lang-bar::-webkit-scrollbar-thumb{background-color:rgba(15,23,42,.15)}.lang-bar:hover::-webkit-scrollbar-thumb{background-color:rgba(15,23,42,.15)}.lang-bar a{color:var(--text-muted);flex-shrink:0;font-size:13px;font-weight:500}.lang-bar a:hover{color:var(--primary-color)}header{border-bottom:1px solid var(--border-color);background-color:#fff;padding:16px 0}.header-inner{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;display:flex}.logo-link{color:var(--text-main);align-items:center;gap:10px;font-size:22px;font-weight:800;display:flex}.logo-icon{background:linear-gradient(135deg, var(--primary-color), var(--primary-hover));border-radius:8px;width:32px;height:32px;display:inline-block;position:relative;box-shadow:0 2px 4px rgba(59,130,246,.2)}.logo-icon:before{content:"";border:2px solid #fff;border-radius:4px;position:absolute;top:6px;bottom:6px;left:6px;right:6px}.logo-text span{color:var(--primary-color)}nav ul{flex-wrap:wrap;gap:28px;list-style:none;display:flex}nav a{color:var(--text-muted);padding:6px 0;font-size:15px;font-weight:600;position:relative}nav a:hover,nav a.active{color:var(--primary-color)}nav a.active:after{content:"";background-color:var(--primary-color);border-radius:2px;width:100%;height:2px;position:absolute;bottom:0;left:0}.btn-it365{background-color:var(--primary-light);color:var(--primary-color);border:1px solid rgba(59,130,246,.15);border-radius:8px;align-items:center;padding:8px 16px;font-size:14px;font-weight:600;display:inline-flex}.btn-it365:hover{background-color:var(--primary-color);color:#fff}.ad-slot{max-width:var(--max-width);border:1px dashed var(--border-color);background:#fff;border-radius:12px;justify-content:center;align-items:center;margin:32px auto;padding:12px;display:flex;overflow:hidden}footer{border-top:1px solid var(--border-color);background-color:#fff;margin-top:64px;padding:48px 0 24px}.footer-inner{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:32px;margin-bottom:32px;display:flex}.footer-brand{max-width:360px}.footer-brand .logo-link{margin-bottom:12px}.footer-brand p{color:var(--text-muted);font-size:14px}.footer-links{flex-wrap:wrap;gap:64px;display:flex}.footer-group h4{color:var(--text-main);margin-bottom:16px;font-size:15px;font-weight:700}.footer-group ul{flex-direction:column;gap:8px;list-style:none;display:flex}.footer-group a{color:var(--text-muted);font-size:14px}.footer-group a:hover{color:var(--primary-color)}.footer-bottom{border-top:1px solid var(--border-color);color:var(--text-muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding-top:24px;font-size:13px;display:flex}.changelog-hero{text-align:center;background:radial-gradient(circle at top,rgba(59,130,246,.05),transparent 400px);padding:60px 0 40px}.changelog-hero h1{color:var(--text-main);margin-bottom:12px;font-size:36px;font-weight:800}.changelog-hero p{color:var(--text-muted);max-width:600px;margin:0 auto;font-size:16px}.timeline-wrapper{max-width:800px;margin:40px auto 0;padding-left:32px;position:relative}.timeline-wrapper:before{content:"";background-color:var(--border-color);width:2px;position:absolute;top:12px;bottom:12px;left:7px}.timeline-item{margin-bottom:48px;position:relative}.timeline-item:last-child{margin-bottom:0}.timeline-dot{border:3px solid var(--primary-color);z-index:2;width:16px;height:16px;transition:var(--transition);background-color:#fff;border-radius:50%;position:absolute;top:10px;left:-32px}.timeline-item:hover .timeline-dot{background-color:var(--primary-color);box-shadow:0 0 0 4px rgba(59,130,246,.2)}.changelog-card{border:1px solid var(--border-color);box-shadow:var(--shadow-sm);transition:var(--transition);background-color:#fff;border-radius:16px;padding:32px}.timeline-item:hover .changelog-card{box-shadow:var(--shadow-md);border-color:rgba(59,130,246,.3)}.changelog-header{border-bottom:1px solid var(--border-color);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:20px;padding-bottom:16px;display:flex}.version-badge{color:var(--text-main);align-items:center;gap:8px;font-size:22px;font-weight:800;display:flex}.version-badge span{background-color:var(--primary-light);color:var(--primary-color);border-radius:6px;padding:4px 10px;font-size:13px;font-weight:700}.release-date{color:var(--text-muted);font-size:14px;font-weight:500}.change-section{margin-bottom:16px}.change-section:last-child{margin-bottom:0}.section-label{border-radius:4px;align-items:center;gap:6px;margin-bottom:10px;padding:2px 8px;font-size:13px;font-weight:700;display:inline-flex}.label-new{color:#059669;background-color:#ecfdf5}.label-fixed{color:#2563eb;background-color:#eff6ff}.change-list{padding-left:8px;list-style:none}.change-list li{color:var(--text-muted);margin-bottom:8px;padding-left:16px;font-size:14px;position:relative}.change-list li:before{content:"•";color:var(--border-color);position:absolute;left:0}.changelog-card:hover .change-list li:before{color:var(--primary-color)}.history-raw-box{border:1px solid var(--border-color);background-color:#fff;border-radius:16px;margin-top:56px;padding:32px}.history-raw-box h3{color:var(--text-main);margin-bottom:16px;font-size:18px;font-weight:800}.raw-textarea-sim{color:#94a3b8;white-space:pre-wrap;background-color:#0f172a;border:1px solid #1e293b;border-radius:8px;max-height:280px;padding:24px;font-family:Consolas,Monaco,monospace;font-size:12px;line-height:1.6;overflow-y:auto}.raw-textarea-sim::-webkit-scrollbar{width:6px}.raw-textarea-sim::-webkit-scrollbar-thumb{background-color:rgba(255,255,255,.1);border-radius:3px}.raw-textarea-sim::-webkit-scrollbar-thumb:hover{background-color:rgba(255,255,255,.2)}@media (max-width:640px){.changelog-header{flex-direction:column;align-items:flex-start;gap:6px}}