.page-enter-active,.page-leave-active{transition:opacity .3s ease}.page-enter-from,.page-leave-to{opacity:0}:root{--apple-black: #000000;--apple-light-gray: #f5f5f7;--apple-near-black: #1d1d1f;--apple-blue: #0071e3;--apple-link-blue: #0066cc;--apple-link-bright: #2997ff;--apple-white: #ffffff;--dark-surface-1: #272729;--dark-surface-2: #262628;--dark-surface-3: #28282a;--text-primary: #1d1d1f;--text-secondary: rgba(0, 0, 0, .8);--text-tertiary: rgba(0, 0, 0, .48);--text-white: #ffffff;--text-white-secondary: rgba(255, 255, 255, .8);--bg-white: #ffffff;--bg-light: #f5f5f7;--bg-dark: #000000;--focus-color: #0071e3;--btn-active: #ededf2;--btn-light: #fafafc;--card-shadow: rgba(0, 0, 0, .22) 3px 5px 30px 0px;--brand-card-shadow: 0 12px 28px rgba(0, 0, 0, .08);--brand-heading-weight: 600;--brand-heading-tracking: -.2px;--nav-height: 56px;--container-max: 980px;--space-xs: 8px;--space-sm: 16px;--space-md: 24px;--space-lg: 32px;--space-xl: 48px;--space-xxl: 64px;--space-xxxl: 96px;--transition-fast: .2s;--transition-normal: .3s;--transition-slow: .6s;--easing-smooth: cubic-bezier(.4, 0, .2, 1)}:root,html[data-theme=default]{--theme-hero-badge-bg: rgba(0, 113, 227, .12);--theme-hero-badge-color: #0071e3;--theme-card-border: rgba(0, 0, 0, .08)}html[data-theme=premium]{--brand-card-shadow: 0 16px 34px rgba(0, 0, 0, .12);--brand-heading-weight: 600;--brand-heading-tracking: -.24px;--theme-hero-badge-bg: rgba(0, 113, 227, .16);--theme-hero-badge-color: #005fc0;--theme-card-border: rgba(0, 0, 0, .12)}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*:focus{outline:none}*:focus-visible{outline:2px solid var(--focus-color);outline-offset:2px}body{font-family:Inter,-apple-system,BlinkMacSystemFont,SF Pro Text,Segoe UI,Roboto,Helvetica Neue,Helvetica,PingFang SC,Microsoft YaHei,Noto Sans SC,sans-serif;font-size:17px;line-height:1.47;color:var(--text-primary);background:var(--bg-white);letter-spacing:-.374px}h1,h2,h3,h4,h5,h6{font-family:Inter,-apple-system,BlinkMacSystemFont,SF Pro Display,Segoe UI,Roboto,Helvetica Neue,Helvetica,PingFang SC,Microsoft YaHei,Noto Sans SC,sans-serif;font-weight:var(--brand-heading-weight);letter-spacing:var(--brand-heading-tracking)}.container{max-width:var(--container-max);margin:0 auto;padding:0 24px}@media (max-width: 767px){.container{padding:0 16px}body{font-size:16px;letter-spacing:-.28px}}.btn-primary{display:inline-block;background:var(--apple-blue);color:var(--apple-white);border-radius:8px;padding:8px 15px;font-size:17px;font-weight:400;text-decoration:none;transition:all var(--transition-fast) var(--easing-smooth);border:1px solid transparent;cursor:pointer;line-height:1;letter-spacing:-.224px}.btn-primary:hover{background:#0077ed}.btn-primary:active{background:var(--btn-active)}.btn-primary:focus{outline:2px solid var(--focus-color);outline-offset:2px}.btn-dark{display:inline-block;background:var(--apple-near-black);color:var(--apple-white);border-radius:8px;padding:8px 15px;font-size:17px;font-weight:400;text-decoration:none;transition:all var(--transition-fast) var(--easing-smooth);border:1px solid transparent;cursor:pointer;line-height:1;letter-spacing:-.224px}.btn-dark:hover{background:#2d2d2f}.btn-pill{display:inline-flex;align-items:center;gap:6px;background:transparent;color:var(--apple-link-blue);border-radius:980px;padding:6px 16px;font-size:14px;font-weight:400;text-decoration:none;border:1px solid var(--apple-link-blue);transition:all var(--transition-fast) var(--easing-smooth);letter-spacing:-.224px;cursor:pointer}.btn-pill:hover{text-decoration:underline}.btn-pill.on-dark{color:var(--apple-link-bright);border-color:var(--apple-link-bright)}.btn-pill .arrow{transition:transform var(--transition-fast)}.btn-pill:hover .arrow{transform:translate(2px)}.link-text{color:var(--apple-link-blue);text-decoration:none;font-size:14px;letter-spacing:-.224px;transition:all var(--transition-fast)}.link-text:hover{text-decoration:underline}.link-text.on-dark{color:var(--apple-link-bright)}.card{background:var(--bg-light);border-radius:8px;overflow:hidden;transition:transform var(--transition-normal) var(--easing-smooth)}.card:hover{transform:scale(1.01)}.card-elevated{background:var(--bg-light);border-radius:8px;overflow:hidden;box-shadow:var(--card-shadow)}.section-dark{background:var(--apple-black);color:var(--apple-white)}.section-light{background:var(--apple-light-gray);color:var(--text-primary)}.section-white{background:var(--bg-white);color:var(--text-primary)}.page{padding-top:var(--nav-height)}.masthead{position:relative;background-size:cover;background-position:center;color:var(--apple-white);padding:80px 24px;min-height:280px;display:flex;align-items:center;background-image:var(--masthead-bg)}@media (max-width: 767px){.masthead{background-image:var(--masthead-bg-mobile, var(--masthead-bg))}}@media (min-width: 768px) and (max-width: 1279px){.masthead{background-image:var(--masthead-bg-tablet, var(--masthead-bg))}}.masthead:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:#0000008c}.masthead-content{position:relative;z-index:1;max-width:var(--container-max);margin:0 auto;width:100%}.masthead h2{font-size:40px;font-weight:var(--brand-heading-weight);line-height:1.1;margin-bottom:12px;letter-spacing:var(--brand-heading-tracking)}.masthead p{font-size:17px;line-height:1.47;max-width:600px;opacity:.9;letter-spacing:-.374px}.page-body{max-width:var(--container-max);margin:0 auto;padding:64px 24px}.page-title{font-size:40px;font-weight:var(--brand-heading-weight);line-height:1.1;margin-bottom:32px;color:var(--text-primary);letter-spacing:var(--brand-heading-tracking)}.article-content,.article-body{font-size:17px;line-height:1.47;color:var(--text-secondary);max-width:820px;letter-spacing:-.374px}.article-content :deep(p),.article-body :deep(p){margin-bottom:16px}.article-content :deep(h3),.article-body :deep(h3){font-size:28px;font-weight:var(--brand-heading-weight);line-height:1.14;margin:40px 0 16px;color:var(--text-primary);letter-spacing:var(--brand-heading-tracking)}.article-content :deep(h4),.article-body :deep(h4){font-size:21px;font-weight:var(--brand-heading-weight);line-height:1.19;margin:24px 0 10px;color:var(--text-primary);letter-spacing:var(--brand-heading-tracking)}.article-content :deep(img),.article-body :deep(img){max-width:100%;height:auto;margin:24px 0;border-radius:8px;display:block}.article-content :deep(a),.article-body :deep(a){color:var(--apple-link-blue);text-decoration:none}.article-content :deep(a:hover),.article-body :deep(a:hover){text-decoration:underline}.layout-sidebar{display:grid;grid-template-columns:1fr 280px;gap:48px}.sidebar h3{font-size:17px;font-weight:600;margin-bottom:16px;padding-bottom:12px;color:var(--text-primary);letter-spacing:-.374px}.sidebar-menu{list-style:none;margin-bottom:32px}.sidebar-menu li{border-bottom:1px solid rgba(0,0,0,.08)}.sidebar-menu a{display:block;padding:12px 0;color:var(--text-secondary);text-decoration:none;font-size:14px;letter-spacing:-.224px;transition:color var(--transition-fast)}.sidebar-menu a:hover,.sidebar-menu a.router-link-active,.sidebar-menu a.active{color:var(--apple-link-blue)}.sidebar-image img{width:100%;border-radius:8px}.fade-in{opacity:0;transform:translateY(30px);transition:opacity .8s ease-out,transform .8s ease-out}.fade-in.visible{opacity:1;transform:translateY(0)}.ai-summary{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media (max-width: 991px){.masthead h2{font-size:32px}.layout-sidebar{grid-template-columns:1fr}.sidebar{order:2}.page-title{font-size:32px}}@media (max-width: 767px){.masthead{padding:60px 16px;min-height:220px}.masthead h2{font-size:28px;line-height:1.14}.masthead p{font-size:15px}.page-body{padding:40px 16px}.page-title{font-size:28px;line-height:1.14}.article-content :deep(h3),.article-body :deep(h3){font-size:24px}.article-content :deep(h4),.article-body :deep(h4){font-size:19px}}