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8px;list-style:none}.lesson-row{color:var(--text-secondary);border-radius:10px;align-items:center;gap:12px;padding:12px;display:flex;text-decoration:none!important}.lesson-row:hover{background:var(--panel-raised);color:var(--text)}.lesson-status{color:var(--text-muted);flex:none}.lesson-row-title{flex:1;min-width:0}.lesson-code{background:rgba(var(--accent-rgb), .1);color:var(--accent);vertical-align:.1em;border-radius:6px;margin-right:8px;padding:1px 6px;font-size:.78em;font-weight:700;display:inline-block}.lesson-row-duration{color:var(--text-muted);flex:none;align-items:center;gap:5px;font-size:13px;display:inline-flex}.locked-course{grid-template-columns:200px minmax(0,1fr);align-items:center;gap:32px;max-width:820px;display:grid}.locked-cover{border-radius:var(--radius);filter:grayscale(.5)brightness(.7)}.lesson-layout{max-width:1440px;min-height:calc(100dvh - var(--header-height));grid-template-columns:minmax(0,1fr) 360px;margin:0 auto;display:grid}.lesson-main{padding:20px var(--gutter) 64px;min-width:0}.lesson-back{color:var(--text-muted);align-items:center;gap:4px;margin-bottom:14px;font-size:14px;font-weight:600;display:inline-flex}.lesson-back:hover{color:var(--text);text-decoration:none}.player-frame{aspect-ratio:16/9;border-radius:var(--radius-lg);border:1px solid var(--border);background:#000;position:relative;overflow:hidden}.player-video{background:#000;width:100%;height:100%}.player-error{text-align:center;background:#050409d9;flex-direction:column;justify-content:center;align-items:center;gap:14px;padding:24px;display:flex;position:absolute;inset:0}.player-toolbar{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:14px;margin-top:10px;display:flex}.player-select{color:var(--text-muted);align-items:center;gap:8px;font-size:13px;display:inline-flex}.player-select select{border:1px solid var(--border-strong);background:var(--input);height:32px;color:var(--text);border-radius:8px;padding:0 8px;font-size:13px}.player-placeholder{border-radius:var(--radius-lg);border:1px solid var(--border);position:relative;overflow:hidden}.player-placeholder p{background:linear-gradient(#0000,#050409e6);padding:16px 20px;font-weight:600;position:absolute;inset:auto 0 0}.next-banner{border-radius:var(--radius);background:var(--ok-bg);border:1px solid #45f0a655;align-items:center;gap:12px;margin-top:14px;padding:12px 14px;display:flex}.next-banner>div{flex:1;min-width:0}.lesson-heading{justify-content:space-between;align-items:flex-start;gap:16px;margin-top:20px;display:flex}.lesson-title{margin-top:6px;font-size:clamp(20px,2.6vw,26px);font-weight:800}.lesson-nav{border-top:1px solid var(--border);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:8px;margin-top:18px;padding:10px 0;display:flex}.lesson-outline-toggle{display:none}.lesson-section{margin-top:28px}.attachments{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.attachment{border-radius:var(--radius);border:1px solid var(--border);background:var(--panel);color:var(--text);align-items:center;gap:12px;padding:12px 14px;display:flex;text-decoration:none!important}.attachment:hover{border-color:var(--border-strong);background:var(--panel-raised)}.attachment svg:first-child{color:var(--accent)}.attachment-name{overflow-wrap:anywhere;flex:1;min-width:0}.lesson-outline{border-left:1px solid var(--border);background:var(--panel);top:var(--header-height);height:calc(100dvh - var(--header-height));position:sticky;overflow:hidden}.outline{flex-direction:column;height:100%;display:flex}.outline-header{border-bottom:1px solid var(--border);gap:10px;padding:18px 18px 14px;display:flex}.outline-header>div{flex-direction:column;flex:1;gap:10px;display:flex}.outline-progress{font-size:12.5px}.outline-close{display:none}.outline-body{scrollbar-width:thin;flex:1;padding:8px 8px 24px;overflow-y:auto}.outline-module h3{letter-spacing:.06em;text-transform:uppercase;color:var(--text-muted);padding:14px 10px 6px;font-size:12px;font-weight:700}.outline-module ol{margin:0;padding:0;list-style:none}.outline-lesson{color:var(--text-secondary);border-radius:9px;align-items:flex-start;gap:10px;padding:9px 10px;font-size:13.5px;line-height:1.4;display:flex;text-decoration:none!important}.outline-lesson svg{flex:none;margin-top:1px}.outline-lesson span:first-of-type{flex:1}.outline-lesson .muted{flex:none;font-size:12px}.outline-lesson:hover{background:var(--panel-raised);color:var(--text)}.outline-lesson.current{background:rgba(var(--accent-rgb), .12);color:var(--text);font-weight:600}.outline-backdrop{display:none}.search-box{border:1px solid var(--border-strong);background:var(--input);color:var(--text-muted);border-radius:14px;align-items:center;gap:12px;padding:8px 8px 8px 16px;display:flex}.search-box:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(var(--accent-rgb), .15)}.search-box input{min-width:0;height:38px;color:var(--text);background:0 0;border:0;outline:none;flex:1;font-size:15px}.search-hint{margin:16px 0;font-size:14px}.search-results{flex-direction:column;gap:10px;margin:0;padding:0;list-style:none;display:flex}.search-result{border-radius:var(--radius);border:1px solid var(--border);background:var(--panel);color:var(--text);gap:14px;padding:16px;display:flex;text-decoration:none!important}.search-result:hover{border-color:var(--border-strong);background:var(--panel-raised)}.search-result svg{flex:none}.search-result>div{flex-direction:column;gap:4px;min-width:0;display:flex}.search-result-path{color:var(--accent);font-size:12px;font-weight:600}.search-result p{font-size:13.5px}.account-grid{grid-template-columns:repeat(2,minmax(0,1fr));align-items:start;gap:20px;display:grid}.card-title-icon{align-items:center;gap:8px;display:flex}.card-title-icon svg{color:var(--accent)}.card-form{margin-top:18px}.card-form .muted{margin-top:12px}.card-actions{flex-wrap:wrap;justify-content:flex-end;gap:10px;margin-top:20px;display:flex}.access-list{margin:14px 0 0;padding:0;list-style:none}.access-list li{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:12px;padding:12px 0;display:flex}.access-list li:last-child{border-bottom:0}.access-list li>div{flex-direction:column;min-width:0;display:flex}.access-course{color:var(--text);font-weight:600}.card .empty{margin-top:14px;padding:28px 16px}@media (max-width:1100px){.lesson-layout{grid-template-columns:minmax(0,1fr)}.lesson-outline{z-index:80;border-left:1px solid var(--border-strong);width:min(380px,88vw);height:100dvh;box-shadow:var(--shadow);transition:transform .22s;position:fixed;top:0;bottom:0;right:0;transform:translate(100%)}.lesson-outline-open{transform:none}.outline-close{display:inline-grid}.outline-backdrop{z-index:70;background:#05040999;display:block;position:fixed;inset:0}.lesson-outline-toggle{display:inline-flex}}@media (max-width:860px){.continue-card{grid-template-columns:minmax(0,1fr)}.continue-body{padding:20px}.course-hero{grid-template-columns:minmax(0,1fr);gap:20px;padding:20px}.course-hero-cover{width:150px}.locked-course{grid-template-columns:minmax(0,1fr)}.locked-cover{width:160px}.account-grid{grid-template-columns:minmax(0,1fr)}.course-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:14px}.lesson-heading{flex-direction:column}.lesson-main{padding-top:12px}.player-frame{border-radius:var(--radius)}}@media (max-width:520px){.lesson-main{padding-left:0;padding-right:0}.lesson-main>:not(.player):not(.player-placeholder){margin-left:16px;margin-right:16px}.player-frame,.player-placeholder{border-left:0;border-right:0;border-radius:0}.player-toolbar{padding:0 16px}.module-header{padding:12px 14px}.lesson-row-duration{display:none}}.course-page .course-hero+.section{margin-top:40px}@media (max-width:520px){.player-toolbar>svg{display:none}.player-select span{clip:rect(0, 0, 0, 0);width:1px;height:1px;position:absolute;overflow:hidden}}