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var(--line);background:var(--cream-2);position:-webkit-sticky;position:sticky;top:0;z-index:10}.burger{display:none;width:44px;height:44px;border:0;border-radius:var(--r-sm);background:transparent;font-size:20px;cursor:pointer}.content{flex:1 1;padding:28px 24px 60px;max-width:var(--page-max);width:100%;margin:0 auto}@media (max-width:860px){.sidebar{position:fixed;inset:0 auto 0 0;z-index:30;transform:translateX(-100%);transition:transform .2s ease}.sidebar-open{transform:translateX(0);box-shadow:var(--sh-lift)}.sidebar-backdrop{display:block;position:fixed;inset:0;z-index:20;border:0;background:rgb(42 23 18/35%)}.burger{display:grid;place-items:center}.content{padding:20px 16px 48px}}.page-header{margin-bottom:24px}.page-header h1{font-size:30px;margin-bottom:4px}.section-title{font-size:20px;margin:28px 0 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1;height:8px;border-radius:var(--r-pill);background:var(--cream-4);overflow:hidden}.progress-fill{display:block;height:100%;background:var(--flame-2);border-radius:var(--r-pill)}.progress-value{font-size:12px;color:var(--ink-3);min-width:34px;text-align:right}.progress-list{display:grid;grid-gap:12px;gap:12px}.progress-item{padding:16px}.progress-item-head{display:flex;align-items:center;gap:10px;margin-bottom:10px;flex-wrap:wrap}.stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));grid-gap:12px;gap:12px;margin-bottom:8px}.stat{padding:18px;background:var(--pink);border-radius:var(--radius)}.stat-value{display:block;font-family:var(--font-display);font-size:30px;font-weight:700}.stat-label{font-size:13px;color:var(--ink-2)}.quick-links{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));grid-gap:16px;gap:16px}.course-link{color:inherit}.course-link,.course-link:hover{text-decoration:none}.course-link-locked{opacity:.65;cursor:not-allowed}.course-card{padding:20px;border:1px 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0;white-space:pre-wrap}.video-wrap{border-radius:var(--radius);overflow:hidden;background:var(--ink)}.video{width:100%;display:block;aspect-ratio:16/9}.material-list{list-style:none;display:grid;grid-gap:6px;gap:6px}.lesson-actions{margin:24px 0}.homework{padding:20px;margin-bottom:24px}.comment-list{list-style:none;display:grid;grid-gap:12px;gap:12px}.comment{padding:14px 16px;background:var(--cream-3);border-radius:var(--radius)}.comment-author{font-weight:500;font-size:14px}.comment-body{margin:4px 0;white-space:pre-wrap;overflow-wrap:anywhere}.comment-date{font-size:12px}.comment-form{display:flex;flex-direction:column;gap:10px;margin-top:16px;align-items:flex-start}.comment-form .textarea{width:100%}.feed{display:grid;grid-gap:16px;gap:16px;max-width:680px}.post{padding:20px}.post-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}.post-title{font-size:20px;margin-bottom:8px}.post-body{white-space:pre-wrap;overflow-wrap:anywhere}.post-link{display:inline-block;margin-top:10px}.post-image{width:100%;height:auto;border-radius:var(--radius);margin-top:12px}.post-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:14px}.like{border:1px solid var(--line-2);background:transparent;border-radius:var(--r-pill);padding:8px 16px;font:inherit;font-size:13px;cursor:pointer;min-height:40px}.like-on{background:var(--flame-soft);border-color:var(--flame-2);color:var(--flame-2)}.gallery-tabs{max-width:320px;margin-bottom:20px}.gallery-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));grid-gap:16px;gap:16px}.work{overflow:hidden;display:flex;flex-direction:column}.work-image{width:100%;aspect-ratio:4/3;object-fit:cover;display:block}.work-image-empty{background:var(--cream-4)}.work-body{padding:16px;display:flex;flex-direction:column;gap:6px;flex:1 1}.work-title{font-size:17px}.work-desc{font-size:14px;color:var(--ink-2);flex:1 1}.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius)}.table{width:100%;border-collapse:collapse;min-width:720px;background:var(--cream-2)}.table td,.table th{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);font-size:14px}.table th{background:var(--cream-3);font-weight:500;font-size:13px}.table tr:last-child td{border-bottom:0}.row-inactive{opacity:.6}.hw-list{display:grid;grid-gap:16px;gap:16px;max-width:760px}.hw{padding:20px}.hw-head{display:flex;flex-direction:column;gap:2px;margin-bottom:10px}.hw-comment{white-space:pre-wrap;overflow-wrap:anywhere;margin-bottom:12px}.hw-images{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}.hw-images img{width:140px;height:105px;object-fit:cover;border-radius:var(--r-sm)}.hw-actions{display:grid;grid-gap:10px;gap:10px}.hw-buttons{display:flex;gap:10px;flex-wrap:wrap}.chat-layout{display:grid;grid-template-columns:260px 1fr;grid-gap:16px;gap:16px;height:calc(100dvh - var(--topbar-h) - 180px);min-height:420px}.chat-list{gap:6px;overflow-y:auto}.chat-item,.chat-list{display:flex;flex-direction:column}.chat-item{gap:2px;text-align:left;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius);background:var(--cream-2);font:inherit;cursor:pointer}.chat-item-active{background:var(--pink-soft);border-color:var(--pink-2)}.chat-item .muted{font-size:12px}.chat-room{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--radius);background:var(--cream-2);overflow:hidden}.chat-room-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--line)}.conn{font-size:12px}.conn-on{color:var(--moss)}.conn-off{color:var(--danger)}.chat-messages{flex:1 1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px}.message-author{font-weight:500;font-size:13px}.message-body{white-space:pre-wrap;overflow-wrap:anywhere}.message-date{font-size:11px}.chat-form{display:flex;gap:10px;padding:12px;border-top:1px solid var(--line)}.chat-form .input{flex:1 1}@media (max-width:860px){.chat-layout{grid-template-columns:1fr;height:auto}.chat-list{flex-direction:row;overflow-x:auto}.chat-item{min-width:180px}.chat-messages{max-height:50dvh}}.picker{display:grid;grid-gap:8px;gap:8px}.picker-input{font:inherit;font-size:14px}.picker-list{list-style:none;display:grid;grid-gap:6px;gap:6px}.picker-item{display:flex;align-items:center;gap:10px;padding:8px;background:var(--cream-3);border-radius:var(--r-sm)}.picker-thumb{width:48px;height:48px;object-fit:cover;border-radius:var(--r-xs)}.picker-name{flex:1 1;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.picker-remove{width:32px;height:32px;border:0;border-radius:var(--r-pill);background:var(--cream-4);font-size:18px;line-height:1;cursor:pointer}.gallery-top{margin-bottom:16px}.work-upload{padding:20px;margin-bottom:20px;display:grid;grid-gap:14px;gap:14px;max-width:560px}select.input{-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:none}.row-tools{display:flex;gap:4px;flex-shrink:0}.icon-btn{width:36px;height:36px;border:1px solid var(--line-2);border-radius:var(--r-sm);background:var(--cream-2);font-size:15px;line-height:1;cursor:pointer}.icon-btn:disabled{opacity:.35;cursor:not-allowed}.icon-btn-danger{color:var(--danger);border-color:var(--danger)}.color-row{display:flex;gap:20px;flex-wrap:wrap}.color-input{display:block;width:56px;height:36px;margin-top:6px;border:1px solid var(--line-2);border-radius:var(--r-sm);background:none;cursor:pointer}.checkbox{display:flex;align-items:center;gap:10px;font-size:14px;cursor:pointer}.checkbox input{width:18px;height:18px;accent-color:var(--flame-2)}.topbar-right{display:flex;align-items:center;gap:12px}.notif,.notif-bell{position:relative}.notif-bell{width:40px;height:40px;border:0;border-radius:var(--r-pill);background:transparent;font-size:18px;cursor:pointer}.notif-bell:hover{background:var(--cream-3)}.notif-count{position:absolute;top:2px;right:2px;min-width:18px;height:18px;padding:0 4px;display:grid;place-items:center;border-radius:var(--r-pill);background:var(--flame-2);color:var(--cream-2);font-size:11px;font-weight:700}.notif-panel{position:absolute;top:calc(100% + 8px);right:0;width:min(340px,calc(100vw - 32px));z-index:40;background:var(--cream-2);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--sh-lift);overflow:hidden}.notif-empty{padding:20px;text-align:center}.notif-list{list-style:none;max-height:60dvh;overflow-y:auto}.notif-item{display:flex;flex-direction:column;gap:2px;width:100%;padding:12px 16px;text-align:left;border:0;border-bottom:1px solid var(--line);background:transparent;font:inherit;cursor:pointer}.notif-item:hover{background:var(--cream-3)}.notif-item .muted{font-size:13px}.notif-date{font-size:11px}.notif-clear{width:100%;padding:10px;border:0;border-top:1px solid var(--line);background:var(--cream-3);font:inherit;font-size:13px;cursor:pointer}.btn-sm{padding:6px 14px;min-height:36px;font-size:13px}.access-editor{padding:20px;margin-bottom:20px;display:grid;grid-gap:12px;gap:12px}.access-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.access-list{list-style:none;display:grid;grid-gap:8px;gap:8px}.access-item{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:10px 12px;background:var(--cream-3);border-radius:var(--r-sm)}.access-title{flex:1 1;min-width:160px;font-size:14px}.access-state{font-size:12px;padding:2px 8px;border-radius:var(--r-pill);white-space:nowrap}.access-on{background:var(--moss-soft);color:#24503b}.access-off{background:var(--cream-4);color:var(--ink-3)}.material-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:8px}.material-row .input{flex:1 1;min-width:140px}.field-hint{font-size:12px;margin-top:6px;line-height:1.5}.field-hint code{padding:1px 5px;border-radius:var(--r-xs);background:var(--cream-4);font-size:11px}.video-embed{aspect-ratio:16/9}.video-frame{width:100%;height:100%;display:block;border:0}.invite-result{padding:20px;margin-bottom:20px;display:grid;grid-gap:12px;gap:12px}.invite-result .input{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px}.work-open{display:block;width:100%;padding:0;border:0;background:none;cursor:pointer;position:relative}.work-open:focus-visible{outline:2px solid var(--flame-2);outline-offset:2px}.link-button{padding:0;border:0;background:none;font:inherit;color:inherit;text-align:left;cursor:pointer}.link-button:hover{color:var(--flame-2)}.work-count{position:absolute;right:10px;bottom:10px;padding:3px 9px;border-radius:var(--r-pill);background:rgb(42 23 18/72%);color:var(--cream-2);font-size:12px}.work-overlay{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:24px;background:rgb(26 22 20/78%)}.work-modal{position:relative;width:min(920px,100%);max-height:92vh;overflow-y:auto;padding:0}.work-close{position:absolute;top:10px;right:10px;z-index:2;background:var(--cream-2)}.work-stage{position:relative;background:var(--ink)}.work-full{display:block;width:100%;max-height:68vh;object-fit:contain;background:var(--ink)}.work-nav{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border:0;border-radius:50%;background:rgb(255 250 243/88%);color:var(--ink);font-size:26px;line-height:1;cursor:pointer}.work-nav:hover{background:var(--cream-2)}.work-nav-prev{left:12px}.work-nav-next{right:12px}.work-counter{position:absolute;left:50%;bottom:12px;transform:translateX(-50%);padding:3px 10px;border-radius:var(--r-pill);background:rgb(42 23 18/72%);color:var(--cream-2);font-size:12px}.work-thumbs{display:flex;gap:8px;padding:12px 16px 0;overflow-x:auto}.work-thumb{flex:0 0 auto;width:64px;height:48px;padding:0;border:2px solid transparent;border-radius:var(--r-xs);overflow:hidden;background:none;cursor:pointer}.work-thumb img{width:100%;height:100%;object-fit:cover;display:block}.work-thumb-on{border-color:var(--flame-2)}.work-info{padding:16px 20px 20px;display:grid;grid-gap:8px;gap:8px}@media (max-width:640px){.work-overlay{padding:0}.work-modal{max-height:100vh;border-radius:0}.work-full{max-height:56vh}}