:root{--font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";--font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--container: 1120px;--radius: 16px;--radius-sm: 12px;--space-1: 6px;--space-2: 10px;--space-3: 14px;--space-4: 18px;--space-5: 24px;--space-6: 32px;--space-7: 48px;--space-8: 72px;--dur-1: .16s;--dur-2: .24s;--ease: cubic-bezier(.2,.8,.2,1)}:root,[data-theme=light]{--bg: #f5f5f7;--surface: rgba(255,255,255,.62);--surface-2: rgba(255,255,255,.82);--text: #111827;--muted: #4b5563;--border: rgba(17,24,39,.12);--primary: #168aff;--shadow: 0 20px 60px rgba(17,24,39,.12);--ring: 0 0 0 4px rgba(120,61,216,.18)}[data-theme=dark]{--bg: #121212;--surface: rgba(255,255,255,.06);--surface-2: rgba(255,255,255,.1);--text: rgba(255,255,255,.92);--muted: rgba(255,255,255,.7);--border: 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920px){.hero-announcement{text-align:left}.hero-grid{grid-template-columns:1fr;gap:var(--space-6)}.grid-3,.grid-2{grid-template-columns:1fr}}@media (max-width: 820px){body.menu-open{overflow:hidden;touch-action:none}.nav-links{display:none}.mobile-toggle{display:inline-flex;border:none;padding:8px;margin-right:-8px}.theme-toggle{display:none}.lang-trigger{border:none;background:transparent;padding:8px}.nav-controls{gap:12px}.navbar-inner{flex-wrap:wrap}.navbar[data-open=true]{position:fixed;top:0;left:0;right:0;bottom:0;height:100vh;z-index:50;background:var(--bg);-webkit-backdrop-filter:none;backdrop-filter:none}[data-theme=light] .navbar[data-open=true]{background:#f5f5f7}[data-theme=dark] .navbar[data-open=true]{background:#121212}.navbar[data-open=true] .nav-links{display:flex;flex-direction:column;align-items:flex-start;justify-content:flex-start;position:absolute;top:58px;left:0;right:0;bottom:0;width:100%;background:var(--bg);z-index:100;gap:0;padding:16px 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(max-width: 480px){.container{padding:0 16px}.section{padding:var(--space-6) 0}.brand-text{font-size:16px}.nav-controls{gap:8px}.lang-trigger{padding:6px 10px;font-size:13px}.actions{display:none}.hero .desc{margin-bottom:0}.hero{padding-top:64px}.card-inner{padding:var(--space-4)}.kicker{font-size:12px;padding:6px 10px}.grid-3 .card .card-inner,.grid-2 .card .card-inner,.feature-title,.feature-desc{text-align:left}}.pricing-headline{margin:0 0 16px;font-size:20px;font-weight:600;line-height:1.6}.pricing-desc{margin:0;color:var(--muted);line-height:1.8}.download-dropdown{position:relative;display:inline-block}#download .card .card-inner{display:flex;flex-direction:column;height:100%;min-height:160px}#download .card .feature-desc{margin-bottom:24px}.download-trigger{display:inline-flex;align-items:center;gap:10px;width:100%;max-width:278px;height:44px}.download-trigger .dropdown-arrow{margin-left:auto;transition:transform var(--dur-1) var(--ease)}.download-dropdown.open 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a{color:var(--primary)}.legal-updated{font-size:14px;color:var(--muted);opacity:.7;margin-bottom:24px!important}.release-header{display:flex;flex-wrap:wrap;align-items:baseline;gap:12px 20px;margin-bottom:16px}.release-version{font-size:20px;margin:0;letter-spacing:-.01em}.release-tag{font-size:12px;font-weight:600;padding:2px 8px;border-radius:4px;background:#22c55e20;color:#16a34a}[data-theme=dark] .release-tag{background:#22c55e30;color:#4ade80}.release-date{font-size:14px;color:var(--muted)}.release-content p{color:var(--muted);line-height:1.7;margin:0 0 12px}.release-content p:last-child{margin-bottom:0}.contact-grid{gap:var(--space-5)}.contact-icon{color:var(--primary);margin-bottom:16px}.contact-title{margin:0 0 8px;font-size:18px;letter-spacing:-.01em}.contact-desc{margin:0;color:var(--muted)}.contact-email{display:inline-block;margin-top:12px;color:var(--primary);font-weight:600}.contact-email:hover{text-decoration:underline}.social-links{display:flex;gap:16px}.social-link{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;background:var(--surface-2);color:var(--muted);transition:background var(--dur-1) var(--ease),color var(--dur-1) var(--ease)}.social-link:hover{background:var(--primary);color:#fff;text-decoration:none}