:root{--bg-primary:#fff;--bg-secondary:#f5f5f7;--bg-card:#fff;--text-primary:#1d1d1f;--text-secondary:#86868b;--accent-blue:#0071e3;--accent-blue-hover:#0077ed;--border-color:#00000014;--shadow-sm:0 2px 8px #0000000a;--shadow-md:0 12px 32px #00000014;--shadow-lg:0 20px 48px #0000001f;--font-family:"Inter", -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif}@media (prefers-color-scheme:dark){:root{--bg-primary:#000;--bg-secondary:#161617;--bg-card:#1d1d1f;--text-primary:#f5f5f7;--text-secondary:#a1a1a6;--accent-blue:#2997ff;--accent-blue-hover:#47a3ff;--border-color:#ffffff1f;--shadow-sm:0 2px 8px #0003;--shadow-md:0 12px 32px #0006;--shadow-lg:0 20px 48px #0009}}*{box-sizing:border-box;margin:0;padding:0}img{max-width:100%;height:auto}body{font-family:var(--font-family);background-color:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;line-height:1.5}.container{max-width:1080px;margin:0 auto;padding:0 24px}.navbar{z-index:100;-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border-color);background:#fffc;position:sticky;top:0}@media (prefers-color-scheme:dark){.navbar{background:#000c}}.nav-container{justify-content:space-between;align-items:center;max-width:1080px;margin:0 auto;padding:14px 24px;display:flex}.logo{align-items:center;gap:8px;display:flex}.logo-text{letter-spacing:-.02em;font-size:18px;font-weight:700}.nav-links{align-items:center;gap:24px;display:flex}.nav-links a{color:var(--text-secondary);font-size:14px;font-weight:500;text-decoration:none;transition:color .15s}.nav-links a:hover{color:var(--text-primary)}.nav-btn{border-radius:980px;padding:8px 16px;background:var(--text-primary)!important;color:var(--bg-primary)!important;font-size:13px!important;font-weight:600!important}.lang-dropdown{display:inline-block;position:relative}.lang-dropdown summary{cursor:pointer;user-select:none;outline:none;list-style:none}.lang-dropdown 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strong{color:var(--text-primary);margin-bottom:2px;display:block}.whats-new-item-icon{flex-shrink:0;font-size:16px}.hero-title{letter-spacing:-.03em;max-width:800px;margin-bottom:16px;font-size:48px;font-weight:800;line-height:1.15}@media (width<=768px){.hero-title{font-size:32px}}.hero-subtitle{color:var(--text-secondary);max-width:640px;margin-bottom:32px;font-size:19px;line-height:1.45}.hero-actions{gap:16px;margin-bottom:48px;display:flex}.btn{border-radius:980px;align-items:center;gap:8px;padding:12px 24px;font-size:15px;font-weight:600;text-decoration:none;transition:transform .15s,opacity .15s;display:inline-flex}.btn:active{transform:scale(.98)}.btn-primary{background:var(--accent-blue);color:#fff}.btn-primary:hover{background:var(--accent-blue-hover)}.btn-secondary{background:var(--bg-secondary);color:var(--text-primary)}.btn-secondary:hover{background:var(--border-color)}.hero-image-wrapper{width:100%;max-width:900px;box-shadow:var(--shadow-lg);border:1px solid var(--border-color);border-radius:16px;overflow:hidden}.hero-image{width:100%;height:auto;display:block}.features{background:var(--bg-secondary);padding:80px 0}.section-header{text-align:center;max-width:700px;margin:0 auto 56px}.section-title{letter-spacing:-.02em;margin-bottom:12px;font-size:36px;font-weight:700}.section-desc{color:var(--text-secondary);font-size:17px}.grid-3{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;display:grid}.feature-card{background:var(--bg-card);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);border-radius:16px;padding:32px 28px;transition:transform .2s,box-shadow 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h4{margin-bottom:8px;font-size:18px;font-weight:600}.step-item p{color:var(--text-secondary);font-size:14px;line-height:1.5}.legal-page{padding:64px 0 80px}.legal-container{max-width:760px}.legal-container h1{letter-spacing:-.02em;margin-bottom:8px;font-size:38px;font-weight:800}.last-updated{color:var(--text-secondary);margin-bottom:40px;font-size:14px}.legal-section{margin-bottom:40px}.legal-section h2{letter-spacing:-.01em;margin-bottom:12px;font-size:22px;font-weight:700}.legal-section p{color:var(--text-secondary);margin-bottom:16px;font-size:15px;line-height:1.6}.legal-section a{color:var(--accent-blue)}.faq-item{border-bottom:1px solid var(--border-color);margin-bottom:24px;padding-bottom:16px}.faq-item h3{margin-bottom:6px;font-size:17px;font-weight:600}.footer{border-top:1px solid var(--border-color);background:var(--bg-primary);padding:40px 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16px}.stat-num{letter-spacing:-.03em;color:var(--accent-blue);margin-bottom:6px;font-size:38px;font-weight:800;line-height:1.1}.stat-label{color:var(--text-primary);margin-bottom:4px;font-size:13px;font-weight:600}.stat-desc{color:var(--text-secondary);font-size:12px}.deep-dive{background:var(--bg-primary);padding:80px 0}.deep-dive-grid{grid-template-columns:1fr 1fr;align-items:center;gap:40px;margin-top:40px;display:grid}.code-box{color:#f2f2f7;box-shadow:var(--shadow-md);background:#1c1c1e;border:1px solid #ffffff1a;border-radius:14px;padding:24px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:13px;line-height:1.6;overflow-x:auto}.code-comment{color:#8e8e93}.code-keyword{color:#ff7b72}.code-func{color:#79c0ff}.code-string{color:#a5d6ff}.comparison-section{background:var(--bg-secondary);padding:80px 0}.comparison-wrapper{box-shadow:var(--shadow-sm);border:1px solid var(--border-color);background:var(--bg-primary);border-radius:16px;margin-top:40px;overflow-x:auto}.comparison-table{border-collapse:collapse;text-align:left;width:100%;font-size:14px}.comparison-table th,.comparison-table td{border-bottom:1px solid var(--border-color);padding:16px 20px}.comparison-table th{background:var(--bg-secondary);color:var(--text-secondary);text-transform:uppercase;letter-spacing:.04em;font-size:13px;font-weight:600}.comparison-table th.highlight-col,.comparison-table td.highlight-col{color:var(--text-primary);background:#0071e30a;font-weight:600}.comparison-table th.highlight-col{color:var(--accent-blue)}.comparison-table tr:last-child td{border-bottom:none}.check-badge{color:#34c759;align-items:center;gap:4px;font-weight:600;display:inline-flex}.cross-badge{color:var(--text-secondary)}.home-faq{background:var(--bg-primary);padding:80px 0}.faq-grid{grid-template-columns:1fr 1fr;gap:24px;margin-top:40px;display:grid}.faq-card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:14px;padding:24px;transition:transform .15s,box-shadow .15s}.faq-card:hover{box-shadow:var(--shadow-sm);transform:translateY(-2px)}.faq-card h3{color:var(--text-primary);margin-bottom:10px;font-size:16px;font-weight:700;line-height:1.4}.faq-card p{color:var(--text-secondary);font-size:14px;line-height:1.6}@media (width<=860px){.stats-grid{grid-template-columns:repeat(2,1fr)}.deep-dive-grid,.faq-grid{grid-template-columns:1fr}}@media (width<=480px){.stats-grid{grid-template-columns:1fr}}.article-container{max-width:820px;margin:0 auto;padding:60px 24px 100px}.article-header{text-align:left;margin-bottom:48px}.article-category{color:var(--accent-blue);background:#0071e31a;border-radius:20px;margin-bottom:16px;padding:4px 12px;font-size:13px;font-weight:600;display:inline-block}.article-title{letter-spacing:-.03em;color:var(--text-primary);margin-bottom:20px;font-size:38px;font-weight:800;line-height:1.25}.article-meta{color:var(--text-secondary);border-bottom:1px solid var(--border-color);align-items:center;gap:16px;padding-bottom:24px;font-size:14px;display:flex}.article-body{color:var(--text-primary);font-size:17px;line-height:1.8}.article-body h2{letter-spacing:-.02em;color:var(--text-primary);border-bottom:1px solid var(--border-color);margin:48px 0 20px;padding-bottom:8px;font-size:26px;font-weight:700}.article-body h3{color:var(--text-primary);margin:32px 0 14px;font-size:20px;font-weight:600}.article-body p{color:var(--text-primary);margin-bottom:24px}.article-body strong{color:var(--text-primary);font-weight:600}.article-body ul,.article-body ol{margin:0 0 24px 24px;line-height:1.8}.article-body li{margin-bottom:10px}.article-body blockquote{border-left:4px solid var(--accent-blue);background:var(--bg-secondary);color:var(--text-secondary);border-radius:0 8px 8px 0;margin:28px 0;padding:16px 20px;font-style:italic}.code-container{color:#d4d4d4;border:1px solid var(--border-color);box-shadow:var(--shadow-sm);background:#1e1e1e;border-radius:12px;margin:28px 0;padding:20px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:14px;line-height:1.6;overflow-x:auto}.code-container pre{margin:0}.code-container code{color:inherit;background:0 0;padding:0;font-family:inherit}.article-body code:not(pre code){background:var(--bg-secondary);color:var(--accent-blue);border:1px solid var(--border-color);border-radius:4px;padding:2px 6px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,monospace;font-size:.9em}.callout-box{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;margin:32px 0;padding:20px 24px}.callout-box.info{border-left:4px solid var(--accent-blue)}.callout-box.tip{border-left:4px solid #34c759}.callout-box.warning{border-left:4px solid #ff9500}.callout-box h4{align-items:center;gap:8px;margin-bottom:8px;font-size:16px;font-weight:700;display:flex}.article-cta{text-align:center;background:linear-gradient(135deg,#0071e314 0%,#34c75914 100%);border:1px solid #0071e333;border-radius:16px;margin-top:64px;padding:40px}.article-cta h3{color:var(--text-primary);margin-bottom:12px;font-size:24px;font-weight:800}.article-cta p{color:var(--text-secondary);margin-bottom:24px;font-size:16px}