/* obfuscated:addon:min-css */
@font-face{font-family:"Open Sans";src:url("/addon/fonts/Open_Sans/OpenSans-Regular.ttf") format("truetype");font-weight:400;font-style:normal;font-display:swap}@font-face{font-family:"Open Sans";src:url("/addon/fonts/Open_Sans/OpenSans-Semibold.ttf") format("truetype");font-weight:600;font-style:normal;font-display:swap}@font-face{font-family:"Open Sans";src:url("/addon/fonts/Open_Sans/OpenSans-Bold.ttf") format("truetype");font-weight:700;font-style:normal;font-display:swap}.ebook-page,.ebook-page *{box-sizing:border-box}.ebook-page{background:#f7f9fc;color:#17324d;font-family:"Open Sans",Arial,sans-serif!important;font-size:15px;-webkit-font-smoothing:antialiased}.ebook-page h1,.ebook-page h2,.ebook-page h3,.ebook-page p{font-family:inherit!important}.ebook-shell{max-width:1160px;margin:0 auto;padding:34px 28px 72px}.ebook-header{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:72px}.ebook-brand{display:flex;align-items:center;gap:14px;color:#17324d;font-size:18px;font-weight:700;letter-spacing:-.02em;text-decoration:none}.ebook-brand img{width:40px;height:40px;object-fit:contain}.ebook-language a{display:inline-block;margin-left:8px;padding:7px 10px;border-radius:8px;color:#718399;font-size:12px;font-weight:600;letter-spacing:.06em}.ebook-language a.active,.ebook-language a:hover{background:#e6f6fa;color:#087ea4}.ebook-heading{max-width:760px;margin-bottom:34px}.ebook-heading h1{margin:0 0 14px;color:#17324d;font-size:clamp(32px, 4vw, 46px);font-weight:700;letter-spacing:-.045em;line-height:1.16}.ebook-heading p{margin:0;color:#718399;font-size:16px;line-height:1.7}.ebook-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}.ebook-card{display:flex;flex-direction:column;min-height:220px;padding:26px;border:1px solid #e4ebf2;border-radius:16px;background:#fff;box-shadow:0 12px 30px rgba(38,75,106,.055);color:inherit;text-decoration:none;transition:border-color .15s,box-shadow .15s,transform .15s}.ebook-card:hover{border-color:#9bd9e7;box-shadow:0 16px 34px rgba(38,75,106,.11);transform:translateY(-2px)}.ebook-card img{width:52px;height:52px;margin-bottom:22px}.ebook-card h2{margin:0 0 9px;color:#17324d;font-size:19px;font-weight:600;letter-spacing:-.02em}.ebook-card p{margin:0;color:#087ea4;font-size:13px;font-weight:600}.ebook-empty{padding:30px;border:1px dashed #c6d6e2;border-radius:16px;background:#fff;color:#718399;line-height:1.6}.ebook-breadcrumb{margin-bottom:20px;color:#8293a5;font-size:13px}.ebook-breadcrumb a{color:#087ea4;font-weight:600;text-decoration:none}.ebook-article{padding:34px 40px;border:1px solid #e4ebf2;border-radius:18px;background:#fff;box-shadow:0 14px 36px rgba(38,75,106,.07)}.ebook-title{display:flex;align-items:center;gap:16px;padding-bottom:26px;border-bottom:1px solid #e6eef5}.ebook-title img{width:64px;height:64px;object-fit:contain}.ebook-layout.has-toc{display:grid;grid-template-columns:220px minmax(0,1fr);gap:36px;padding-top:28px}.ebook-toc{align-self:start;position:sticky;top:22px;padding-right:22px;border-right:1px solid #e6eef5}.ebook-toc__heading{margin-bottom:12px;color:#17324d;font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.ebook-toc__link{display:flex;align-items:flex-start;gap:8px;margin:3px 0;padding:9px 10px;border-radius:8px;color:#60788f;font-size:13px;line-height:1.45;text-decoration:none;transition:background .15s,color .15s}.ebook-toc__link.active,.ebook-toc__link:hover{background:#eaf8fb;color:#087ea4;text-decoration:none}.ebook-toc__number{flex:0 0 auto;min-width:18px;color:#9aabba;font-size:11px;font-weight:700}.ebook-toc__link.active .ebook-toc__number{color:#087ea4}.ebook-layout.has-toc .ebook-content{padding-top:0}.ebook-section-title{margin:0 0 24px!important;color:#17324d!important;font-size:30px!important;font-weight:700!important;letter-spacing:-.035em!important}.ebook-title h1{color:#17324d;font-size:clamp(27px, 4vw, 38px);font-weight:700;letter-spacing:-.04em;line-height:1.2}.ebook-content{padding-top:28px;color:#40566b;font-size:15px;line-height:1.8}.ebook-content h1,.ebook-content h2,.ebook-content h3{color:#17324d;font-weight:600;letter-spacing:-.025em}.ebook-content blockquote{margin:20px 0;padding:12px 18px;border-left:3px solid #49b7ce;background:#f1fafc;color:#52708f}.ebook-content a{color:#087ea4}.ebook-content img{max-width:100%;height:auto;border-radius:8px}.ebook-content code{padding:2px 5px;border-radius:4px;background:#edf4f8}.ebook-content pre{overflow-x:auto;padding:14px;border-radius:8px;background:#17324d;color:#f7f9fc}@media (max-width:600px){.ebook-shell{padding:24px 18px 52px}.ebook-header{margin-bottom:52px}.ebook-article{padding:25px 22px}.ebook-layout.has-toc{display:block;padding-top:22px}.ebook-toc{position:static;margin-bottom:26px;padding:0 0 16px;border-right:0;border-bottom:1px solid #e6eef5}}