:root{--sf-brand:#3976ed;--sf-secondary:color-mix(in oklch,var(--sf-brand) 55%,#0bbda3);--sf-tertiary:color-mix(in oklch,var(--sf-brand) 25%,#ec9a3c);--sf-ink:var(--lt-ink,#17283c);--sf-muted:var(--lt-sub,#627285);--sf-line:var(--lt-line,#e5e9ee);--sf-paper:#fff;--sf-radius:18px;--sf-shadow:0 6px 25px #18344d06}*{box-sizing:border-box}body.sf-body{margin:0;background:var(--lt-soft,#faf9f6);color:var(--sf-ink);font-family:Inter,"Segoe UI",Arial,sans-serif;line-height:1.6;font-size:var(--lt-fs-14,15px)}a{color:var(--sf-brand);text-decoration:none}a:hover{text-decoration:underline}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--sf-brand);outline-offset:3px}img,video{max-width:100%}h1,h2,h3{line-height:1.25;letter-spacing:-.025em;margin:0 0 16px}h1{font-size:clamp(28px,4vw,48px)}h2{font-size:25px}h3{font-size:18px}p{margin:0 0 16px}.sf-muted{color:var(--sf-muted)}.sf-header{background:#fff;border-bottom:1px solid var(--sf-line);display:flex;align-items:center;justify-content:space-between;gap:24px;padding:18px max(24px,calc((100vw - 1280px)/2));min-height:82px;position:relative;z-index:5}.sf-brand{display:flex;align-items:center;gap:12px;color:var(--sf-ink);font-size:18px;font-weight:750;max-width:350px;line-height:1.25}.sf-brand img{object-fit:contain}.sf-nav{display:flex;align-items:center;gap:22px;font-size:14px;font-weight:600}.sf-nav a:not(.sf-btn){color:var(--sf-ink)}.sf-nav-toggle{display:none}.sf-container{max-width:1280px;margin:auto;padding:36px 24px 60px;min-height:70vh}.sf-footer{display:flex;justify-content:space-between;gap:20px;max-width:1280px;margin:auto;padding:24px;color:var(--sf-muted);border-top:1px solid var(--sf-line)}.sf-svg{width:34px;height:34px;color:var(--sf-brand);flex-shrink:0}.sf-svg-secondary{stroke:var(--sf-secondary)}.sf-svg-tertiary{stroke:var(--sf-tertiary)}.sf-btn{border:1px solid var(--sf-brand);background:var(--sf-brand);color:#fff;display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:10px 20px;border-radius:var(--lt-r-12,11px);font-weight:650;text-align:center;line-height:1.3;text-decoration:none}.sf-btn:hover{text-decoration:none;filter:brightness(.95)}.sf-btn.sf-quiet{background:white;color:var(--sf-brand);border-color:var(--sf-line)}.sf-btn.sf-danger{background:#fff;color:#c33442;border-color:#f0c6cb}.sf-small{padding:10px 14px;font-size:14px}.sf-icon-button{min-height:44px;min-width:44px;border:1px solid var(--sf-line);border-radius:var(--lt-r-8,10px);background:#fff;color:var(--sf-brand);font-size:20px}.sf-card{border:1px solid var(--sf-line);border-radius:var(--sf-radius);background:var(--sf-paper);padding:26px;box-shadow:var(--sf-shadow)}.sf-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.sf-two{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:28px;align-items:start}.sf-stack>*+*{margin-top:24px}.sf-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.sf-between{justify-content:space-between}.sf-page-head{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:28px}.sf-page-head h1{font-size:32px;margin-bottom:0}.sf-section{margin-bottom:52px}.sf-pill{display:inline-flex;padding:4px 10px;border-radius:20px;background:color-mix(in srgb,var(--sf-brand) 8%,#fff);color:var(--sf-brand);font-size:12px;font-weight:700}.sf-cover{width:100%;height:200px;object-fit:cover;border-radius:var(--lt-r-12,14px)}.sf-cover-empty{height:200px;display:grid;place-items:center;border-radius:var(--lt-r-12,14px);border:1px solid var(--sf-line)}.sf-cover-empty .sf-svg{width:74px;height:74px}.sf-course-card{padding:16px;display:flex;flex-direction:column;gap:15px}.sf-course-card h3{margin:0}.sf-course-card .sf-price{margin-top:auto}.sf-price{font-size:24px;font-weight:750}.sf-price del{font-size:14px;font-weight:400;color:var(--sf-muted);margin-left:10px}.sf-hero{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center;padding:32px 0 50px}.sf-hero h1{font-size:clamp(32px,4vw,56px)}.sf-hero p{font-size:18px;color:var(--sf-muted);max-width:560px}.sf-hero img{width:100%;aspect-ratio:1.2;object-fit:cover;border-radius:28px}.sf-buy{position:sticky;top:24px}.sf-buy .sf-btn{width:100%;margin-top:12px}.sf-rich{overflow-wrap:anywhere;line-height:1.8}.sf-rich img{max-width:100%;height:auto}.sf-rich table{max-width:100%;display:block;overflow:auto}.sf-rich iframe{max-width:100%}.sf-rich h2{margin-top:28px}.sf-label{display:block;font-weight:600;font-size:14px;margin-bottom:6px}.sf-field{width:100%;border:1px solid var(--lt-line,#d8dee7);background:#fff;color:var(--sf-ink);border-radius:var(--lt-r-8,10px);min-height:46px;padding:11px 13px;max-width:100%}textarea.sf-field{min-height:130px;resize:vertical}.sf-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.sf-fields .sf-wide{grid-column:1/-1}.sf-field-block{margin-bottom:18px}.sf-check{display:flex;align-items:center;gap:10px;min-height:44px;font-weight:500}.sf-check input{width:20px;height:20px;accent-color:var(--sf-brand);flex-shrink:0}.sf-filter{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:28px}.sf-filter .sf-field{width:auto;flex:1;min-width:150px}.sf-alert{border:1px solid #c4e5d3;background:#effbf4;border-radius:12px;padding:16px 20px;margin-bottom:24px}.sf-alert p{margin:0}.sf-error{background:#fff3f3;border-color:#f2cdcd;color:#a82737}.sf-empty{padding:48px 24px;text-align:center;color:var(--sf-muted);border:1px dashed var(--sf-line);border-radius:var(--lt-r-12,16px);background:white}.sf-table-wrap{overflow:auto}.sf-table{width:100%;border-collapse:collapse;font-size:14px}.sf-table th,.sf-table td{text-align:left;padding:14px 12px;border-bottom:1px solid var(--sf-line)}.sf-table th{color:var(--sf-muted);font-weight:600}.sf-table td:first-child{min-width:180px}.sf-auth{max-width:480px;margin:24px auto;padding:32px}.sf-auth h1{font-size:28px}.sf-auth .sf-btn{width:100%}.sf-divider{height:1px;background:var(--sf-line);margin:24px 0}.sf-check{cursor:pointer}.sf-part{padding:0;overflow:hidden}.sf-part summary{display:flex;justify-content:space-between;gap:18px;align-items:center;padding:22px;cursor:pointer;min-height:56px;font-weight:700;list-style:none}.sf-part summary:before{content:'⌄';color:var(--sf-brand)}.sf-part summary span{flex:1}.sf-part-body{padding:0 22px 22px}.sf-child{border-left:2px solid var(--sf-line);margin-top:20px;padding-left:18px}.sf-unit{display:flex;align-items:center;gap:14px;padding:14px 0;border-top:1px solid var(--sf-line);min-height:62px}.sf-unit-name{flex:1;min-width:0;overflow-wrap:anywhere}.sf-unit .sf-svg{width:25px;height:25px}.sf-editor-part{padding:22px;margin-top:20px}.sf-editor-part .sf-part-title{flex:1;min-width:120px}.sf-unit-editor{padding:14px;border:1px solid var(--sf-line);border-radius:12px;margin:12px 0}.sf-unit-editor details{margin-top:12px}.sf-unit-editor summary{cursor:pointer;min-height:44px;display:flex;align-items:center}.sf-toolbar{display:flex;gap:7px;flex-wrap:wrap}.sf-toolbar button{min-height:44px;min-width:44px;border:1px solid var(--sf-line);background:#fff;border-radius:var(--lt-r-8,9px)}.sf-add{display:block;margin:18px auto 0;width:48px;height:48px;border-radius:50%;border:1px solid var(--sf-line);background:white;color:var(--sf-brand);font-size:28px}.sf-modal{border:0;border-radius:22px;padding:28px;max-width:760px;width:calc(100vw - 32px);max-height:90dvh;overflow:auto;box-shadow:0 20px 80px #16253c30;color:var(--sf-ink)}.sf-modal::backdrop{background:#10243c55}.sf-kind-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:24px}.sf-kind{display:flex;flex-direction:column;align-items:center;gap:10px;min-height:100px;border:1px solid var(--sf-line);border-radius:var(--lt-r-12,14px);background:#fff;padding:18px 8px;font-weight:600;text-align:center}.sf-kind:hover{border-color:var(--sf-brand)}.sf-status{font-size:13px;color:var(--sf-muted)}.sf-progress{width:100%;height:8px;border-radius:8px;accent-color:var(--sf-brand)}.sf-doc{width:100%;height:70dvh;min-height:450px;border:0;border-radius:12px;background:var(--lt-soft2,#f2f3f5)}.sf-player{max-width:960px;margin:auto}.sf-player video{width:100%;border-radius:var(--lt-r-12,14px);background:#111;max-height:70dvh}.sf-player audio{width:100%}.sf-player .sf-rich{padding:24px;background:white;border-radius:var(--lt-r-12,14px)}.sf-form-actions{display:flex;justify-content:flex-end;gap:12px;flex-wrap:wrap;margin-top:24px}.sf-blog-body{max-width:780px;margin:auto}.sf-pagination{margin-top:28px}.sf-pagination nav{display:flex;gap:10px;flex-wrap:wrap}.sf-pagination svg{width:20px;height:20px}.sf-pagination i.fi{font-size:20px}.sf-pagination nav>div{display:flex;gap:12px;flex-wrap:wrap}.sf-pagination span,.sf-pagination a{padding:6px;min-height:44px;display:inline-flex;align-items:center}.sf-pagination p{margin:0}.sf-hidden{display:none!important}
.sf-two>*{min-width:0}.sf-card .tox-tinymce{max-width:100%}h1,h2,h3{overflow-wrap:anywhere}
@media(max-width:1100px){.sf-nav{gap:12px}.sf-brand{max-width:240px}.sf-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.sf-header{padding:16px 24px}.sf-two{grid-template-columns:minmax(0,1fr) 300px}}
@media(max-width:800px){.sf-nav-toggle{display:block}.sf-nav{display:none;position:absolute;top:100%;left:0;right:0;background:white;padding:18px 24px;border-bottom:1px solid var(--sf-line);flex-direction:column;align-items:stretch;gap:0}.sf-nav a{padding:12px;min-height:44px}.sf-header.is-open .sf-nav{display:flex}.sf-container{padding:24px 18px 40px}.sf-two,.sf-hero{grid-template-columns:1fr}.sf-hero{gap:24px;padding-top:10px}.sf-hero img{max-height:360px}.sf-buy{position:static}.sf-card{padding:20px}.sf-part{padding:0}.sf-kind-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.sf-doc{height:65dvh;min-height:340px}.sf-table th,.sf-table td{padding:12px 8px}.sf-field{min-width:0}}
@media(max-width:480px){.sf-grid,.sf-fields{grid-template-columns:1fr}.sf-brand{font-size:16px;max-width:270px}.sf-brand .sf-svg{width:28px}.sf-header{padding:14px 18px}.sf-page-head h1{font-size:27px}.sf-kind-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.sf-container{padding:22px 14px 36px}.sf-modal{padding:20px}.sf-child{padding-left:10px}.sf-part-body{padding:0 16px 16px}.sf-part summary{padding:18px 16px}.sf-unit{flex-wrap:wrap}.sf-unit-name{flex-basis:calc(100% - 45px)}.sf-unit .sf-toolbar{width:100%}.sf-filter>*{width:100%!important}.sf-form-actions .sf-btn{flex:1}.sf-auth{padding:24px}.sf-editor-part{padding:16px}.sf-footer{padding:20px 14px;flex-wrap:wrap}}
.sf-question-fields{min-width:0;border:0;padding:0;margin:0}.sf-question{margin:20px 0;overflow-wrap:anywhere}.sf-question .sf-rich{overflow-x:auto}.sf-question-image{max-width:100%;max-height:360px;object-fit:contain}.sf-answer{padding:12px 0;min-height:44px}.sf-speed{max-width:160px;margin:12px 0}.sf-preserve{white-space:pre-wrap;overflow-wrap:anywhere}.sf-source-picker{display:grid;gap:12px}.sf-source-choice{text-align:left;white-space:normal;justify-content:flex-start}.sf-runtime-frame{border:0}.sf-question textarea{resize:vertical}
:root [hidden]{display:none!important}