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var(--line);display:flex;align-items:center;gap:20px;padding:0 24px;height:60px}.logo{font-family:var(--font-head);font-weight:800;font-size:20px;display:flex;align-items:center;gap:8px;color:var(--ink)}.logo span{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--indigo),var(--indigo-d));display:grid;place-items:center;font-size:14px}.app-main{max-width:1080px;margin:0 auto;padding:24px 20px 60px}.page-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;flex-wrap:wrap;gap:10px}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}@media (max-width: 700px){.grid-2{grid-template-columns:1fr}}.stack{display:flex;flex-direction:column;gap:14px}.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.spacer{flex:1}.hello h2{font-size:var(--fs-xl)}.hello .sub{color:var(--muted);font-size:var(--fs-sm);margin-top:3px}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}@media (max-width: 860px){.stat-grid{grid-template-columns:repeat(2,1fr)}}.stat-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:16px 18px;display:flex;align-items:center;gap:13px}.stat-icon{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;font-size:20px;flex-shrink:0}.stat-icon.indigo{background:var(--indigo-bg)}.stat-icon.green{background:var(--green-bg)}.stat-icon.amber{background:#fff7ee}.stat-icon.red{background:#fef2f2}.stat-card .num{font-family:var(--font-head);font-weight:800;font-size:22px;line-height:1.1}.stat-card .lbl{color:var(--muted);font-size:var(--fs-xs);font-weight:600}.live-banner{background:linear-gradient(120deg,var(--indigo),var(--indigo-d));color:#fff;border-radius:var(--r-lg);padding:18px 22px;display:flex;align-items:center;gap:14px;flex-wrap:wrap;box-shadow:0 10px 26px #5b5bf052}.live-banner .pulse{width:11px;height:11px;border-radius:50%;background:#ff6b6b;box-shadow:0 0 #ff6b6bb3;animation:pulse 1.6s 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.n{opacity:.75;font-weight:600;margin-left:4px}.dot{display:inline-block;width:7px;height:7px;border-radius:50%;margin-right:2px}.dot.green{background:var(--green)}.dot.indigo{background:var(--indigo)}.dot.red{background:var(--red)}.dot.amber{background:var(--amber)}.empty-state{text-align:center;padding:34px 16px;color:var(--muted)}.empty-state .ico{font-size:34px;margin-bottom:8px}.empty-state p{font-size:var(--fs-sm)}.empty-state .hint{font-size:var(--fs-xs);margin-top:3px;opacity:.8}.form-pop{border:1.5px solid var(--indigo-bg);box-shadow:var(--shadow)}.form-pop h3{margin-bottom:12px;font-size:var(--fs-md)}.table .when{white-space:nowrap}.table .when .rel{font-weight:700;color:var(--ink-soft)}.table .when .abs{font-size:var(--fs-xs);color:var(--muted)}.journal-row td{background:var(--bg);border-radius:10px}.journal-title{font-size:var(--fs-2xs);font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px}.journal-line{display:flex;align-items:center;gap:14px;padding:6px 0;font-size:var(--fs-sm);border-bottom:1px dashed var(--line2)}.journal-line:last-child{border-bottom:none}.journal-line .name{font-weight:600;flex:1}.journal-line .mins{font-weight:700;color:var(--indigo)}.auth-wrap{min-height:100vh;min-height:100dvh;display:grid;place-items:center;padding:20px}.auth-card{width:100%;max-width:400px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:30px 28px;box-shadow:var(--shadow-md)}.auth-logo{width:56px;height:56px;border-radius:16px;margin:0 auto 16px;background:linear-gradient(135deg,var(--indigo),var(--indigo-d));display:grid;place-items:center;font-size:26px;box-shadow:0 12px 26px #5b5bf059}.auth-card h1{text-align:center;font-size:var(--fs-2xl);margin-bottom:4px}.auth-sub{text-align:center;color:var(--muted);font-size:var(--fs-sm);margin-bottom:22px}.auth-foot{text-align:center;font-size:var(--fs-sm);color:var(--muted);margin-top:16px}.section-nav{position:sticky;top:66px;z-index:40;display:flex;gap:5px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:5px;box-shadow:var(--shadow);overflow-x:auto;-webkit-overflow-scrolling:touch}.section-nav button{flex:1;display:inline-flex;align-items:center;justify-content:center;gap:7px;border:none;background:transparent;color:var(--muted);font-weight:700;font-size:var(--fs-sm);padding:9px 14px;border-radius:10px;transition:.18s;white-space:nowrap}.section-nav button:hover{color:var(--ink-soft);background:var(--bg)}.section-nav button.active{background:var(--indigo);color:#fff}.section-nav button .n{min-width:18px;height:18px;padding:0 5px;border-radius:9px;background:var(--red);color:#fff;font-size:11px;display:grid;place-items:center}.lesson-line{display:flex;align-items:center;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line);flex-wrap:wrap}.lesson-line:last-child{border-bottom:none}.lesson-line .info{flex:1;min-width:150px}.lesson-line .info .name{font-weight:700;font-size:var(--fs-base)}.lesson-line .info .meta{color:var(--muted);font-size:var(--fs-xs);margin-top:2px}.room-wrap{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:#0f1022}.room-wrap .lk-video-conference{height:100%}.room-wrap .lk-focus-layout{grid-template-columns:220px minmax(0,1fr)}.room-wrap .lk-carousel .lk-participant-tile{max-height:140px}.room-wrap .lk-chat{width:min(340px,100vw);flex-shrink:0}[data-lk-theme=default]{--lk-accent-bg: var(--indigo);--lk-accent-fg: #fff}.room-wrap .lk-control-bar{justify-content:center;gap:12px;border-top:none;background:#0a0b1ceb;padding:12px 16px}.room-wrap .lk-control-bar>.lk-button,.room-wrap .lk-control-bar>.lk-button-group>.lk-button,.room-wrap .lk-control-bar>.lk-disconnect-button{font-size:0;gap:0;width:52px;height:52px;padding:0;border-radius:999px;justify-content:center;align-items:center;background:#ffffff21;transition:background .15s}.room-wrap .lk-control-bar>.lk-button:hover,.room-wrap .lk-control-bar>.lk-button-group>.lk-button:hover{background:#ffffff3d}.room-wrap .lk-control-bar svg{flex-shrink:0}.room-wrap .lk-control-bar>.lk-disconnect-button{width:68px;background:#dc3d43}.room-wrap .lk-control-bar>.lk-disconnect-button:hover{background:#b7343a}.room-wrap .lk-control-bar .lk-button-menu{font-size:0;width:30px;height:52px;padding:0;border-radius:999px;background:transparent}.room-wrap .lk-device-menu{font-size:13px}.room-wrap .lk-device-menu .lk-button{font-size:13px;width:auto;height:auto;border-radius:8px;justify-content:flex-start}.room-topbar{position:absolute;top:0;left:0;right:0;z-index:20;display:flex;align-items:center;gap:12px;padding:10px 16px;background:linear-gradient(180deg,rgba(5,6,20,.75),transparent);color:#fff;pointer-events:none}.room-topbar .live-dot{width:9px;height:9px;border-radius:50%;background:#ff4d4d;box-shadow:0 0 #ff4d4d99;animation:live-pulse 1.6s infinite;flex-shrink:0}@keyframes live-pulse{0%{box-shadow:0 0 #ff4d4d8c}70%{box-shadow:0 0 0 8px #ff4d4d00}to{box-shadow:0 0 #ff4d4d00}}.room-topbar-title{font-weight:700;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.room-topbar-timer{font-variant-numeric:tabular-nums;font-size:13px;color:#d6d9f0}.room-topbar-count{font-size:13px;color:#d6d9f0;margin-left:auto}.room-ask-btn{pointer-events:auto;border:1px solid rgba(255,255,255,.3);background:#ffffff1f;color:#fff;font-size:13px;font-weight:600;padding:7px 14px;border-radius:999px;cursor:pointer;transition:background .15s}.room-ask-btn:hover:not(:disabled){background:#ffffff3d}.room-ask-btn:disabled{opacity:.7;cursor:default}.screen-request-stack{position:absolute;top:56px;right:16px;z-index:30;display:flex;flex-direction:column;gap:10px;max-width:min(340px,calc(100vw - 32px))}.screen-request-toast{background:#1c1e3a;border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:14px 16px;color:#fff;box-shadow:0 8px 28px #00000073;animation:toast-in .25s ease}@keyframes toast-in{0%{transform:translateY(-8px);opacity:0}to{transform:translateY(0);opacity:1}}.screen-request-toast .msg{font-size:14px;display:block;margin-bottom:10px}.screen-request-toast .row{display:flex;gap:8px}.screen-request-toast button{flex:1;border:none;border-radius:8px;padding:8px 10px;font-size:13px;font-weight:700;cursor:pointer}.screen-request-toast .ok{background:var(--indigo);color:#fff}.screen-request-toast .ok:hover{background:var(--indigo-d)}.screen-request-toast .no{background:#ffffff1f;color:#fff}.screen-request-toast .no:hover{background:#ffffff38}.room-loading{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:#0f1022;display:grid;place-content:center;justify-items:center;gap:14px;color:#cdd1ee;font-size:15px}.room-spinner{width:42px;height:42px;border-radius:50%;border:3px solid rgba(255,255,255,.15);border-top-color:var(--indigo);animation:spin .9s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.room-error-card{display:grid;gap:12px;justify-items:start;max-width:420px;padding:0 20px}.room-lobby{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:#0f1022;display:grid;place-items:center;padding:24px;overflow-y:auto}.room-lobby-card{width:min(560px,100%);text-align:center}.room-lobby-card h1{color:#fff;font-size:24px;margin-bottom:4px}.room-lobby-sub{color:#a9aed6;font-size:14px;margin-bottom:18px}.room-lobby .lk-prejoin{background:transparent;padding:0}.room-lobby .lk-username-container input{display:none}.room-lobby .lk-username-container{display:flex;justify-content:center;margin-top:14px}.room-lobby .lk-prejoin .lk-join-button{width:min(320px,100%);padding:12px 20px;font-size:15px}.room-lobby .lk-prejoin .lk-video-container{border-radius:16px;overflow:hidden;border:1px solid rgba(255,255,255,.12)}.room-lobby .lk-prejoin .lk-join-button{background:var(--indigo);font-weight:700;border-radius:10px}.room-lobby .lk-prejoin .lk-join-button:hover{background:var(--indigo-d)}.room-lobby-back{margin-top:16px;background:none;border:none;color:#a9aed6;font-size:14px;cursor:pointer}.room-lobby-back:hover{color:#fff}@media (max-width: 640px){:root{--fs-2xs: 12px;--fs-xs: 13px;--fs-sm: 14px;--fs-base: 15px}.app-header{padding:0 14px;gap:10px}.app-main{padding:16px 12px 48px}.card{padding:16px}.page-head{flex-direction:column;align-items:stretch}.page-head .row .btn{flex:1}.stat-grid{grid-template-columns:repeat(2,1fr);gap:10px}.stat-card{padding:12px 14px;gap:10px}.stat-icon{width:36px;height:36px;font-size:17px;border-radius:11px}.stat-card .num{font-size:19px}.live-banner{padding:16px}.live-banner .btn{width:100%}.course-grid{grid-template-columns:1fr}.input{font-size:16px}.journal-line{flex-wrap:wrap;gap:6px 10px}.auth-card{padding:24px 20px}.room-wrap .lk-focus-layout{grid-template-columns:1fr;grid-template-rows:minmax(0,1fr) 96px}.room-wrap .lk-carousel .lk-participant-tile{max-height:96px}}@media (max-width: 400px){.app-header .user-name{display:none}.logo{font-size:17px}}