@font-face{font-family:Cairo;src:url(/fonts/cairo-arabic-400.woff2)format("woff2");font-weight:400;font-display:swap}@font-face{font-family:Cairo;src:url(/fonts/cairo-arabic-600.woff2)format("woff2");font-weight:600;font-display:swap}@font-face{font-family:Cairo;src:url(/fonts/cairo-arabic-800.woff2)format("woff2");font-weight:800;font-display:swap}:root{--bg:#020617;--panel:#081326;--line:#1e2d4e;--muted:#94a3b8;--blue:#3b82f6;--text:#f8fafc;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--text);margin:0;font-family:Cairo,system-ui,sans-serif;line-height:1.8}a{color:inherit;text-decoration:none}a:hover{color:#93c5fd}button,input,select,textarea{font:inherit}button,.button{color:#fff;cursor:pointer;background:#2563eb;border:1px solid #4c8df7;border-radius:11px;justify-content:center;align-items:center;gap:8px;padding:10px 20px;font-weight:600;line-height:1.7;display:inline-flex}button:hover,.button:hover{color:#fff;background:#1d4ed8}button:disabled{opacity:.5;cursor:wait}.secondary{border-color:var(--line);background:#0e1b31}.danger{background:#7f1d1d;border-color:#991b1b}.text-button{color:var(--muted);background:0 0;border:none;padding:4px}input,select,textarea{color:#fff;background:#040c1c;border:1px solid #314363;border-radius:10px;outline:none;width:100%;padding:11px 13px;display:block}input:focus,select:focus,textarea:focus{border-color:#60a5fa;box-shadow:0 0 0 3px #3b82f622}textarea{resize:vertical;min-height:120px}input[type=checkbox],input[type=radio]{width:19px;height:19px;accent-color:var(--blue);display:inline-block}label{font-size:.92rem;display:block}label>input,label>select,label>textarea{margin-top:7px}h1,h2,h3{margin:0 0 12px;line-height:1.5}h1{font-size:clamp(1.75rem,3vw,2.6rem);font-weight:800}h2{font-size:1.65rem}h3{font-size:1.15rem}p{margin:8px 0 16px}.container{width:calc(100% - 48px);max-width:1280px;margin:auto}.topbar{z-index:50;border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#020617ed;padding:14px 0;position:sticky;top:0}.row{flex-wrap:wrap;align-items:center;gap:14px;display:flex}.between{justify-content:space-between}.logo{align-items:center;gap:12px;font-size:1.15rem;font-weight:800;display:flex}.logo small{color:var(--muted);font-size:.63rem;font-weight:400;display:block}.logo-icon{background:#1d4ed8;border:1px solid #60a5fa;border-radius:12px;place-items:center;width:44px;height:44px;display:grid}.topnav{align-items:center;gap:22px;font-size:.88rem;display:flex}.mobile-menu{display:none}.public-main{min-height:70vh;padding:40px 0 70px}.muted{color:var(--muted)}.eyebrow{color:#60a5fa;font-size:.75rem;font-weight:600}.badge{color:#93c5fd;background:#112648;border:1px solid #3b82f64d;border-radius:30px;padding:3px 12px;font-size:.75rem;display:inline-block}.hero{text-align:center;background:radial-gradient(at 50% 45%,#12397066,#0000 65%);padding:80px 16px 70px;position:relative}.hero h1{max-width:880px;margin:20px auto;font-size:clamp(2.5rem,6vw,4.8rem);line-height:1.4}.hero h1 em{color:#93c5fd;font-style:normal}.hero>p{max-width:650px;color:var(--muted);margin:14px auto 25px;font-size:1.1rem}.hero .actions{justify-content:center}.hero .stats{max-width:700px;margin:45px auto 0}.stats{grid-template-columns:repeat(auto-fit,minmax(135px,1fr));gap:16px;margin:24px 0;display:grid}.stat{border:1px solid var(--line);background:#09172c;border-radius:16px;flex-direction:column;padding:18px 22px;display:flex}.stat strong{color:#dbeafe;font-size:2rem}.stat span{color:var(--muted);font-size:.85rem}.section{padding:38px 0}.section-head,.page-heading{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px;margin-bottom:24px;display:flex}.grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,290px),1fr));gap:22px;display:grid}.course-card{border:1px solid var(--line);background:var(--panel);border-radius:18px;transition:transform .2s,border-color .2s;overflow:hidden}.course-card:hover{border-color:#3b82f6;transform:translateY(-4px)}.course-cover{background:#12243c;height:185px;position:relative}.course-cover img{object-fit:cover;width:100%;height:100%}.course-cover .badge{position:absolute;bottom:12px;right:12px}.card-body{padding:22px}.card-body p{font-size:.86rem}.card,.panel{background:var(--panel);border:1px solid var(--line);border-radius:16px;margin-bottom:20px;padding:24px}.actions{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.form{gap:20px;display:grid}.form-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;display:grid}.form-grid .wide{grid-column:1/-1}.check{align-items:center;gap:10px;display:flex}.check input{margin:0}.auth-card{max-width:570px;margin:35px auto;padding:35px}.auth-card.wide{max-width:850px}.notice{overflow-wrap:anywhere;border:1px solid;border-radius:10px;margin:16px 0;padding:14px 18px}.error{color:#fda4af;background:#451a243d;border-color:#fb718566}.success{color:#6ee7b7;background:#064e3b44;border-color:#34d39955}.empty{text-align:center;color:var(--muted);border:1px dashed var(--line);border-radius:16px;padding:50px 20px}.loading{color:var(--muted);justify-content:center;align-items:center;gap:15px;padding:50px;display:flex}.spinner{border:2px solid var(--line);border-top-color:var(--blue);border-radius:50%;width:22px;height:22px;animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.workspace{grid-template-columns:210px minmax(0,1fr);align-items:start;gap:30px;display:grid}.sidebar{max-height:calc(100vh - 110px);padding:25px 0;position:sticky;top:95px;overflow:auto}.sidebar nav{gap:4px;display:grid}.sidebar a{color:#aab9ce;border-radius:9px;padding:9px 14px;font-size:.88rem}.sidebar a:hover,.sidebar a.active{color:#bfdbfe;background:#142952}.dashboard-main{min-width:0;min-height:75vh;padding:34px 0 60px}.table-wrap{border:1px solid var(--line);border-radius:13px;margin:20px 0;overflow-x:auto}table{border-collapse:collapse;text-align:right;width:100%;font-size:.88rem}th,td{border-bottom:1px solid var(--line);vertical-align:top;padding:14px 16px}th{color:#9cacbf;white-space:nowrap;background:#0c192d;font-weight:600}td{background:#071023}tr:last-child td{border:0}td .actions{flex-wrap:nowrap}td button,td .button{padding:5px 10px;font-size:.76rem}progress{width:100%;height:7px;accent-color:var(--blue);margin:20px 0 4px;display:block}.split{grid-template-columns:minmax(0,2fr) minmax(240px,1fr);align-items:start;gap:24px;display:grid}.lesson-row{border-bottom:1px solid var(--line);justify-content:space-between;gap:15px;padding:16px 0;display:flex}.lesson-row:last-child{border:0}.video-wrap{aspect-ratio:16/9;background:#000;border-radius:15px;margin-bottom:20px;position:relative;overflow:hidden}.video-wrap video,.video-wrap iframe{border:0;width:100%;height:100%}.watermark{pointer-events:none;z-index:3;color:#fff9;text-shadow:0 1px 3px #000;font-size:12px;animation:23s linear infinite alternate watermark;position:absolute;top:12%;left:6%}@keyframes watermark{to{top:80%;left:65%}}.question{scroll-margin-top:150px}.choice{border:1px solid var(--line);cursor:pointer;border-radius:11px;align-items:center;gap:12px;margin:10px 0;padding:14px 16px;display:flex}.choice.selected{background:#1e3a5f;border-color:#60a5fa}.choice.correct{background:#064e3b44;border-color:#34d399}.choice.wrong{background:#7f1d1d44;border-color:#fb7185}.exam-toolbar{z-index:20;border:1px solid var(--line);background:#0b1933;border-radius:14px;margin-bottom:24px;padding:15px 22px;position:sticky;top:86px}.timer{font-variant-numeric:tabular-nums;direction:ltr;font-size:1.6rem}.camera-preview{object-fit:cover;background:#000;border-radius:10px;width:160px;height:120px}.no-copy{-webkit-user-select:none;user-select:none}.question-image{object-fit:contain;border-radius:10px;max-width:100%;max-height:380px}.prose{white-space:pre-wrap;overflow-wrap:anywhere}.footer{border-top:1px solid var(--line);padding:35px 0;font-size:.85rem}.skip-link{z-index:100;background:#2563eb;padding:10px;position:fixed;top:-100px;right:20px}.skip-link:focus{top:10px}.filterbar{gap:12px;margin-bottom:25px;display:flex}.filterbar input{flex:1}.filterbar select{max-width:240px}.report-links{overflow-wrap:anywhere}.chart-bar{background:#2563eb;border-radius:5px;height:7px;margin:8px 0 16px}.about{grid-template-columns:250px 1fr;align-items:center;gap:45px;display:grid}.about img{border-radius:22px;width:100%}.upload-field small{overflow-wrap:anywhere;margin:8px 0;display:block}.page-heading .actions .button{font-size:.85rem}.pager{justify-content:center;gap:20px;margin:20px 0;display:flex}@media (max-width:960px){.topnav{gap:12px;font-size:.8rem}.workspace{grid-template-columns:175px minmax(0,1fr);gap:20px}.split,.form-grid{grid-template-columns:1fr}.sidebar a{padding:7px;font-size:.8rem}}@media (max-width:720px){.container{width:calc(100% - 28px)}.mobile-menu{display:block}.topnav{border-bottom:1px solid var(--line);background:#081326;flex-direction:column;padding:20px;display:none;position:absolute;top:76px;left:0;right:0}.topnav.open{display:flex}.workspace{display:block}.sidebar{max-height:none;padding:14px 0 0;position:static}.sidebar>p{display:none}.sidebar nav{padding-bottom:8px;display:flex;overflow:auto}.sidebar a{white-space:nowrap;padding:7px 12px}.dashboard-main{padding-top:25px}.hero{padding:45px 0}.hero h1{font-size:2.5rem}.stats{gap:8px}.stat{padding:14px}.stat strong{font-size:1.7rem}.about{grid-template-columns:1fr}.about img{justify-self:center;width:200px}.auth-card{padding:23px}.filterbar{flex-direction:column}.filterbar select{max-width:none}.exam-toolbar{top:82px}.panel,.card{padding:20px}.topbar .logo{font-size:1rem}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}@media print{header,footer,.sidebar,button,.actions{display:none!important}body{color:#000;background:#fff}.card,.panel,td,th{color:#000;background:#fff;border-color:#aaa}.workspace{display:block}.video-wrap{display:none}}.account-summary{background:linear-gradient(135deg,#102a52,#0b172d);border:1px solid #3b82f655;border-radius:16px;align-items:center;gap:16px;margin:4px 0 22px;padding:18px;display:flex;box-shadow:0 12px 30px #0003}.account-avatar{color:#dbeafe;background:#2563eb;border-radius:17px;flex:0 0 58px;place-items:center;width:58px;height:58px;font-size:1.35rem;font-weight:800;display:grid;box-shadow:inset 0 0 0 1px #93c5fd55}.account-summary strong{font-size:1.08rem;display:block}.account-summary p{margin:1px 0 2px;font-size:.85rem}.account-summary small{font-size:.72rem}.protected-video{isolation:isolate;box-shadow:0 22px 55px #0008,inset 0 0 0 1px #ffffff18}.protected-video video,.protected-video iframe{object-fit:contain;display:block}.video-watermark,.video-watermark-ghost{z-index:3;pointer-events:none;-webkit-user-select:none;user-select:none;color:#fff;letter-spacing:.02em;text-align:center;overflow-wrap:anywhere;max-width:42%;font-size:clamp(8px,.72vw,11px);font-weight:600;line-height:1.35;position:absolute}.video-watermark{opacity:.4;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);text-shadow:0 1px 3px #000;background:#02081742;border:1px solid #ffffff20;border-radius:999px;padding:3px 8px;transition:top 1.8s,left 1.8s}.video-watermark-ghost{opacity:.1;letter-spacing:.05em;font-size:7px;top:48%;left:39%;transform:rotate(-16deg)}.video-curtain{z-index:5;text-align:center;color:#fff;background:#020817ed;flex-direction:column;justify-content:center;align-items:center;gap:8px;padding:24px;display:flex;position:absolute;inset:0}.video-curtain strong{font-size:clamp(1.1rem,2vw,1.5rem)}.video-curtain span{color:#bfdbfe;font-size:.9rem}@media print{.protected-video{display:none!important}}.universal-player{outline:none;min-height:280px}.universal-player:focus-visible{box-shadow:0 0 0 3px #60a5fa,0 22px 55px #0008}.universal-player:fullscreen{aspect-ratio:auto;border-radius:0;width:100vw;height:100vh;margin:0}.player-surface.drive-surface{cursor:default}.player-surface video,.player-surface iframe,.youtube-player-mount,.youtube-player-mount iframe{object-fit:contain;border:0;display:block;width:100%!important;height:100%!important}.player-empty{color:#cbd5e1;place-items:center;margin:0;display:grid;position:absolute;inset:0}.universal-player .video-watermark,.universal-player .video-watermark-ghost{z-index:16}.universal-player .video-curtain{z-index:40}.security-lock{gap:10px}.security-countdown{color:#fbbf24;letter-spacing:.08em;background:#451a034f;border:1px solid #f59e0b55;border-radius:10px;padding:7px 14px;font:700 1.35rem ui-monospace,SFMono-Regular,Consolas,monospace;display:block}.drive-player .player-source-badge{left:auto;right:12px}.drive-protection-top{z-index:34;cursor:not-allowed;background:#00000001;height:76px;position:absolute;inset:0 0 auto}.drive-protection-corner{z-index:35;cursor:not-allowed;background:#00000001;width:68px;height:54px;position:absolute;bottom:0;right:0}.privacy-curtain{background:#020617fa}.privacy-curtain strong{color:#e2e8f0}.security-page-lock{text-align:center;max-width:680px;margin:50px auto}.security-page-lock .security-countdown{width:max-content;margin:18px auto 0}.local-video-import{border:1px solid var(--line);background:#0b1933;border-radius:12px;margin-top:14px;padding:14px}.local-video-import button{width:100%;margin-top:10px}.youtube-player-mount,.youtube-player-mount iframe{pointer-events:none!important}.youtube-click-shield{z-index:12;cursor:pointer;-webkit-touch-callout:none;background:#00000001;position:absolute;inset:0}.youtube-idle-cover .player-big-play{position:static}.universal-player{container-type:inline-size}.capture-lock{color:#fff;text-align:center;-webkit-user-select:none;user-select:none;background:radial-gradient(circle at 50% 35%,#1e1b4b,#020817 72%);place-items:center;padding:12px;display:grid;position:absolute;inset:0;overflow:hidden}.capture-lock-card{justify-items:center;gap:clamp(6px,2cqi,14px);max-width:min(560px,92%);display:grid}.capture-lock-card h2{color:#fecaca;margin:0;font-size:clamp(.95rem,3.6cqi,1.8rem);line-height:1.5}.capture-lock-card p{color:#cbd5e1;margin:0;font-size:clamp(.72rem,1.8cqi,.95rem);line-height:1.85}.capture-lock-ring{place-items:center;width:clamp(58px,15cqi,132px);height:clamp(58px,15cqi,132px);display:grid;position:relative}.capture-lock-ring svg{position:absolute;inset:0;transform:rotate(-90deg)}@container (max-width:520px){.capture-lock-card p{display:none}}.capture-lock-track{fill:none;stroke:#ffffff1a;stroke-width:6px}.capture-lock-progress{fill:none;stroke:#f87171;stroke-width:6px;stroke-linecap:round;transition:stroke-dashoffset 1s linear}.capture-lock-spinner{border:3px solid #0000;border-top-color:#fbbf24;border-radius:50%;animation:1.2s linear infinite capture-lock-spin;position:absolute;inset:11%}.capture-lock-icon{font-size:clamp(1.3rem,4cqi,2.2rem);animation:1.6s ease-in-out infinite capture-lock-pulse}.capture-lock-countdown{color:#fbbf24;letter-spacing:.08em;background:#451a034f;border:1px solid #f59e0b55;border-radius:12px;padding:clamp(4px,1cqi,8px) clamp(10px,2.4cqi,18px);font:700 clamp(1.2rem,4.4cqi,2.4rem) ui-monospace,SFMono-Regular,Consolas,monospace}@keyframes capture-lock-spin{to{transform:rotate(360deg)}}@keyframes capture-lock-pulse{50%{opacity:.75;transform:scale(1.12)}}@media (prefers-reduced-motion:reduce){.capture-lock-spinner,.capture-lock-icon{animation:none}}.security-row{flex-wrap:wrap;gap:10px}.security-row .actions{margin:0}.security-timer-badge{color:#fbbf24;background:#451a034f;border:1px solid #f59e0b55;border-radius:999px;padding:4px 10px;font:700 .85rem ui-monospace,SFMono-Regular,Consolas,monospace}.security-timer-form{flex-wrap:wrap;align-items:flex-end;gap:12px}.security-timer-form label{flex:0 220px}.universal-player{--vp-accent:#3b82f6;--vp-track:#ffffff2b;--vp-loaded:#ffffff5c}.universal-player .player-surface{cursor:pointer;background:#000;place-items:center;display:grid;position:absolute;inset:0;overflow:hidden}.universal-player .player-surface.drive-surface{cursor:default}.universal-player.controls-hidden,.universal-player.controls-hidden .player-surface,.universal-player.controls-hidden .youtube-click-shield{cursor:none}.universal-player .player-source-badge{z-index:13;pointer-events:none;color:#cbd5e1;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#02081799;border:1px solid #ffffff1f;border-radius:999px;align-items:center;gap:5px;padding:4px 10px 4px 8px;font-size:10px;font-weight:600;transition:opacity .25s;display:inline-flex;position:absolute;top:12px;right:12px}.universal-player .player-source-badge svg{color:#60a5fa;font-size:12px}.universal-player.controls-hidden .player-source-badge{opacity:0}.universal-player .player-big-play{z-index:14;color:#fff;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);cursor:pointer;background:#2563ebd9;border:1px solid #ffffff45;border-radius:50%;place-items:center;width:76px;min-width:0;height:76px;margin:0;padding:0;font-size:34px;transition:transform .2s,background .2s,box-shadow .2s;display:grid;position:absolute;box-shadow:0 10px 30px #0009,0 0 0 8px #3b82f626}.universal-player .player-big-play:hover{background:var(--vp-accent);color:#fff;transform:scale(1.07);box-shadow:0 12px 36px #000a,0 0 0 12px #3b82f633}.universal-player .youtube-idle-cover{z-index:14;cursor:pointer;background:radial-gradient(circle at 50% 45%,#13254a,#020817 72%);place-items:center;display:grid;position:absolute;inset:0}.universal-player .youtube-idle-cover .player-big-play{position:static}.universal-player .youtube-unmute{z-index:15;color:#fff;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#020817d9;border:1px solid #ffffff38;border-radius:999px;margin:0;padding:7px 14px;font-size:.8rem;position:absolute;top:12px;left:12px}.universal-player .youtube-unmute:hover{color:#fff;background:#0f1d38;transform:none}.vp-spinner{z-index:15;pointer-events:none;border:4px solid #ffffff2e;border-top-color:#fff;border-radius:50%;width:54px;height:54px;animation:.8s linear infinite vp-spin;position:absolute}@keyframes vp-spin{to{transform:rotate(360deg)}}.universal-player .vp-controls{z-index:20;color:#fff;background:linear-gradient(#0000,#020817a8 48%,#020817f2);padding:44px 14px 10px;transition:opacity .25s,transform .25s;position:absolute;inset:auto 0 0}.universal-player.controls-hidden .vp-controls{opacity:0;pointer-events:none;transform:translateY(8px)}.universal-player .vp-row{justify-content:space-between;align-items:center;gap:10px;margin-top:2px;display:flex}.universal-player .vp-group{align-items:center;gap:2px;min-width:0;display:flex}.universal-player .vp-btn{color:#e2e8f0;width:38px;min-width:0;height:38px;box-shadow:none;cursor:pointer;background:0 0;border:0;border-radius:10px;flex:none;place-items:center;margin:0;padding:0;font-size:22px;line-height:1;transition:background .15s,color .15s,transform .15s;display:inline-grid}.universal-player .vp-btn:hover{color:#fff;background:#ffffff1f;transform:none}.universal-player .vp-btn:active{transform:scale(.9)}.universal-player .vp-btn:focus-visible{outline:2px solid var(--vp-accent);outline-offset:1px}.universal-player .vp-btn-primary{font-size:25px}.universal-player .vp-volume{align-items:center;display:flex}.universal-player .vp-time{font-variant-numeric:tabular-nums;color:#94a3b8;white-space:nowrap;gap:5px;margin-inline-start:8px;font:600 .8rem/1 ui-monospace,SFMono-Regular,Consolas,monospace;display:flex}.universal-player .vp-time b{color:#f8fafc;font-weight:600}.universal-player .vp-speed{appearance:none;color:#e2e8f0;text-align:center;width:auto;max-width:none;height:30px;min-height:0;box-shadow:none;cursor:pointer;background:#ffffff14;border:1px solid #ffffff2e;border-radius:999px;flex:none;margin:0 4px 0 0;padding:0 12px;font:600 .78rem/1 system-ui,sans-serif;display:block}.universal-player .vp-speed:hover{background:#ffffff26}.universal-player .vp-speed:focus-visible{outline:2px solid var(--vp-accent);outline-offset:1px}.universal-player .vp-speed option{color:#fff;background:#0f172a}.universal-player .vp-range{appearance:none;width:100%;height:18px;min-height:0;box-shadow:none;cursor:pointer;background:0 0;border:0;border-radius:0;flex:none;margin:0;padding:0;display:block}.universal-player .vp-range:focus{box-shadow:none}.universal-player .vp-range:disabled{cursor:default;opacity:.4}.universal-player .vp-range::-webkit-slider-runnable-track{background:linear-gradient(to right,var(--vp-accent) var(--vp-fill,0%),var(--vp-track) var(--vp-fill,0%));border-radius:999px;height:4px}.universal-player .vp-range::-moz-range-track{background:linear-gradient(to right,var(--vp-accent) var(--vp-fill,0%),var(--vp-track) var(--vp-fill,0%));border-radius:999px;height:4px}.universal-player .vp-range::-webkit-slider-thumb{appearance:none;background:#fff;border:0;border-radius:50%;width:14px;height:14px;margin-top:-5px;transition:transform .15s;transform:scale(0);box-shadow:0 0 0 4px #3b82f64d,0 2px 6px #0009}.universal-player .vp-range::-moz-range-thumb{background:#fff;border:0;border-radius:50%;width:14px;height:14px;transition:transform .15s;transform:scale(0);box-shadow:0 0 0 4px #3b82f64d,0 2px 6px #0009}.universal-player .vp-range:hover::-webkit-slider-thumb{transform:scale(1)}.universal-player .vp-range:focus-visible::-webkit-slider-thumb{transform:scale(1)}.universal-player .vp-range:hover::-moz-range-thumb{transform:scale(1)}.universal-player .vp-range:focus-visible::-moz-range-thumb{transform:scale(1)}.universal-player .vp-timeline .vp-range::-webkit-slider-runnable-track{background:linear-gradient(to right,var(--vp-accent) var(--vp-fill,0%),var(--vp-loaded) var(--vp-fill,0%),var(--vp-loaded) var(--vp-buffered,0%),var(--vp-track) var(--vp-buffered,0%));transition:height .15s}.universal-player .vp-timeline .vp-range::-moz-range-track{background:linear-gradient(to right,var(--vp-accent) var(--vp-fill,0%),var(--vp-loaded) var(--vp-fill,0%),var(--vp-loaded) var(--vp-buffered,0%),var(--vp-track) var(--vp-buffered,0%))}.universal-player .vp-timeline:hover .vp-range::-webkit-slider-runnable-track{height:6px}.universal-player .vp-timeline:hover .vp-range::-webkit-slider-thumb{margin-top:-4px}.universal-player .vp-volume-range{opacity:0;width:0;transition:width .2s,opacity .2s,margin .2s}.universal-player .vp-volume:hover .vp-volume-range,.universal-player .vp-volume:focus-within .vp-volume-range{opacity:1;width:78px;margin-inline:2px 6px}.universal-player .drive-fullscreen{z-index:38;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#020817cc;font-size:20px;position:absolute;top:12px;left:12px}.universal-player .drive-fullscreen:hover{background:#0f1d38}.universal-player:fullscreen .vp-controls{padding:60px 28px 18px}.universal-player:fullscreen .vp-btn{width:46px;height:46px;font-size:26px}.universal-player:fullscreen .vp-time{font-size:.95rem}@media (max-width:620px){.universal-player{min-height:200px}.universal-player .vp-controls{padding:34px 8px 6px}.universal-player .vp-btn{width:34px;height:34px;font-size:20px}.universal-player .vp-volume-range{display:none}.universal-player .vp-time{margin-inline-start:4px;font-size:.7rem}.universal-player .vp-speed{height:28px;padding:0 9px;font-size:.72rem}.universal-player .player-big-play{width:62px;height:62px;font-size:28px}}@media (max-width:380px){.universal-player .vp-time span{display:none}}@media (prefers-reduced-motion:reduce){.vp-spinner{animation-duration:2s}.universal-player .vp-controls,.universal-player .player-big-play{transition:none}}
:root{--indigo:#1b2845;--yale:#274060;--baltic:#335c81;--sky:#65afff;--bg:#f3f6fb;--bg-glow-1:#65afff26;--bg-glow-2:#335c811a;--surface:#fff;--surface-2:#eef3fa;--surface-3:#e3ebf6;--panel:var(--surface);--line:#dbe3ee;--line-strong:#c6d3e4;--text:#16223a;--text-soft:#34445f;--muted:#5d6c85;--heading:#1b2845;--link:#1f5d99;--link-hover:#274060;--accent:#335c81;--accent-soft:#65afff24;--accent-ring:#65afff59;--blue:#335c81;--btn-bg:#274060;--btn-ink:#fff;--btn-hover:#335c81;--btn-border:#274060;--btn2-bg:#fff;--btn2-ink:#274060;--btn2-border:#c6d3e4;--btn2-hover:#eef3fa;--input-bg:#fff;--input-border:#c9d5e5;--placeholder:#8a98ad;--topbar:#ffffffd9;--shadow-sm:0 1px 2px #1b28450d, 0 2px 8px #1b28450a;--shadow:0 2px 6px #1b28450a, 0 12px 32px #1b284514;--shadow-lg:0 24px 60px #1b284526;--sidebar-bg:linear-gradient(180deg, #274060, #1b2845);--sidebar-ink:#c9d8ec;--sidebar-muted:#8fa6c4;--sidebar-hover:#ffffff14;--sidebar-line:#ffffff1c;--table-head:#eef3fa;--table-row:#fff;--table-hover:#f5f8fd;--hero-ink:#1b2845;--pattern:#27406014;--danger-bg:#fdecef;--danger-ink:#a12a40;--danger-line:#f3c2cc;--success-bg:#e7f7ef;--success-ink:#17694a;--success-line:#b9e6d0;--warn-bg:#fff6e5;--warn-ink:#8a5300;--warn-line:#f5d9a3;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}:root[data-theme=dark]{--bg:#0a1120;--bg-glow-1:#27406066;--bg-glow-2:#335c8133;--surface:#121c30;--surface-2:#17233b;--surface-3:#1e2c47;--line:#24344e;--line-strong:#31466a;--text:#eef3fb;--text-soft:#c6d3e6;--muted:#9aabc4;--heading:#f4f8ff;--link:#8cc4ff;--link-hover:#b9dbff;--accent:#65afff;--accent-soft:#65afff1f;--accent-ring:#65afff66;--blue:#65afff;--btn-bg:#65afff;--btn-ink:#0b1a30;--btn-hover:#8cc4ff;--btn-border:#65afff;--btn2-bg:#17233b;--btn2-ink:#e3edfa;--btn2-border:#31466a;--btn2-hover:#1e2c47;--input-bg:#0d1628;--input-border:#31466a;--placeholder:#7b8ea9;--topbar:#0a1120d9;--shadow-sm:0 1px 2px #0000004d;--shadow:0 10px 30px #00000040;--shadow-lg:0 28px 70px #0006;--sidebar-bg:linear-gradient(180deg, #1b2845, #131d33);--sidebar-ink:#b8c8de;--sidebar-muted:#7f97b8;--sidebar-hover:#ffffff0f;--sidebar-line:#ffffff14;--table-head:#17233b;--table-row:#121c30;--table-hover:#17233b;--hero-ink:#f4f8ff;--pattern:#65afff12;--danger-bg:#3a1621;--danger-ink:#ffb3c1;--danger-line:#6d2a3b;--success-bg:#0f2e24;--success-ink:#8be0b8;--success-line:#1f5b45;--warn-bg:#33240b;--warn-ink:#ffd28a;--warn-line:#6a4a12;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}@media (prefers-color-scheme:dark){:root:not([data-theme]){--bg:#0a1120;--bg-glow-1:#27406066;--bg-glow-2:#335c8133;--surface:#121c30;--surface-2:#17233b;--surface-3:#1e2c47;--line:#24344e;--line-strong:#31466a;--text:#eef3fb;--text-soft:#c6d3e6;--muted:#9aabc4;--heading:#f4f8ff;--link:#8cc4ff;--link-hover:#b9dbff;--accent:#65afff;--accent-soft:#65afff1f;--accent-ring:#65afff66;--blue:#65afff;--btn-bg:#65afff;--btn-ink:#0b1a30;--btn-hover:#8cc4ff;--btn-border:#65afff;--btn2-bg:#17233b;--btn2-ink:#e3edfa;--btn2-border:#31466a;--btn2-hover:#1e2c47;--input-bg:#0d1628;--input-border:#31466a;--placeholder:#7b8ea9;--topbar:#0a1120d9;--shadow-sm:0 1px 2px #0000004d;--shadow:0 10px 30px #00000040;--shadow-lg:0 28px 70px #0006;--sidebar-bg:linear-gradient(180deg, #1b2845, #131d33);--sidebar-ink:#b8c8de;--sidebar-muted:#7f97b8;--sidebar-hover:#ffffff0f;--sidebar-line:#ffffff14;--table-head:#17233b;--table-row:#121c30;--table-hover:#17233b;--hero-ink:#f4f8ff;--pattern:#65afff12;--danger-bg:#3a1621;--danger-ink:#ffb3c1;--danger-line:#6d2a3b;--success-bg:#0f2e24;--success-ink:#8be0b8;--success-line:#1f5b45;--warn-bg:#33240b;--warn-ink:#ffd28a;--warn-line:#6a4a12;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}html,body,*{scrollbar-width:none}::-webkit-scrollbar{width:0;height:0;display:none}body{background:var(--bg);color:var(--text);text-rendering:optimizelegibility;line-height:1.85;transition:background-color .25s,color .25s}h1,h2,h3,h4{color:var(--heading);letter-spacing:0}h1,h2{font-weight:800}p{color:inherit}a:hover{color:var(--link-hover)}::selection{background:var(--accent-ring);color:var(--heading)}:focus-visible{outline:2px solid var(--accent);outline-offset:3px}svg{flex-shrink:0}a,button{-webkit-tap-highlight-color:transparent}.muted{color:var(--muted)}.container{width:calc(100% - 64px);max-width:1320px}.site-shell{isolation:isolate;background:radial-gradient(ellipse 50% 520px at 88% 120px, var(--bg-glow-1), transparent 72%), radial-gradient(ellipse 38% 460px at 8% 900px, var(--bg-glow-2), transparent 80%), var(--bg);min-height:100vh;position:relative}:root{--motif:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='72' height='72' viewBox='0 0 72 72'%3E%3Cg fill='none' stroke='%23000' stroke-width='1.2'%3E%3Cpath d='M36 6l8.8 21.2L66 36l-21.2 8.8L36 66l-8.8-21.2L6 36l21.2-8.8z'/%3E%3Cpath d='M14.8 14.8h42.4v42.4H14.8z'/%3E%3C/g%3E%3C/svg%3E")}.site-shell:before{content:"";z-index:-1;pointer-events:none;background:var(--pattern);height:760px;-webkit-mask:var(--motif) 0 0/72px 72px, linear-gradient(#000, transparent);-webkit-mask-composite:source-in;-webkit-mask:var(--motif) 0 0/72px 72px, linear-gradient(#000, transparent);mask:var(--motif) 0 0/72px 72px, linear-gradient(#000, transparent);position:absolute;inset:0 0 auto;-webkit-mask-composite:source-in;mask-composite:intersect}.site-shell.is-dashboard:before{opacity:.6;height:420px}button,.button{background:var(--btn-bg);color:var(--btn-ink);border:1px solid var(--btn-border);box-shadow:none;border-radius:12px;padding:11px 20px;font-weight:700;transition:background .2s,color .2s,transform .2s,border-color .2s,box-shadow .2s}button:hover,.button:hover{background:var(--btn-hover);color:var(--btn-ink);box-shadow:0 8px 20px var(--accent-soft);transform:translateY(-1px)}button:disabled{box-shadow:none;transform:none}.secondary,.button.secondary{background:var(--btn2-bg);color:var(--btn2-ink);border-color:var(--btn2-border)}.secondary:hover,.button.secondary:hover{background:var(--btn2-hover);color:var(--btn2-ink);border-color:var(--accent)}.danger{background:var(--danger-bg);border-color:var(--danger-line);color:var(--danger-ink)}.danger:hover{background:var(--danger-ink);border-color:var(--danger-ink);color:var(--surface)}.text-button{color:var(--muted);box-shadow:none;background:0 0;border:0;padding:5px}.text-button:hover{background:var(--accent-soft);color:var(--heading);box-shadow:none;transform:none}input,select,textarea{background:var(--input-bg);border-color:var(--input-border);color:var(--text);border-radius:12px}input::placeholder,textarea::placeholder{color:var(--placeholder)}input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}label{color:var(--text-soft);font-weight:600}.topbar{background:var(--topbar);-webkit-backdrop-filter:saturate(1.4)blur(18px);backdrop-filter:saturate(1.4)blur(18px);border-bottom:1px solid var(--line);box-shadow:none;padding:14px 0}.logo{color:var(--heading);gap:12px;font-size:1.12rem}.logo small{color:var(--muted);margin-top:2px;font-size:.64rem}.logo-icon{background:linear-gradient(140deg, var(--yale), var(--baltic) 55%, var(--sky));color:#fff;border:0;border-radius:15px;place-items:center;width:46px;height:46px;font-size:1.7rem;font-weight:800;line-height:1;display:grid;position:relative;box-shadow:0 8px 20px #27406040,inset 0 0 0 1px #ffffff2e}.brand-monogram-spark{color:#cfe6ff;font-size:.5rem;line-height:1;position:absolute;top:5px;left:7px}.topnav{gap:22px;font-size:.86rem}.topnav a:not(.button){color:var(--text-soft);font-weight:600}.topnav a:not(.button):hover,.topnav a[aria-current=page]{color:var(--heading)}.topnav a[aria-current=page]:not(.button){box-shadow:inset 0 -2px 0 var(--sky)}.topnav .button{padding:9px 16px;font-size:.82rem}.nav-account{align-items:center;gap:8px;display:flex}.mini-avatar{background:var(--surface-3);border:1px solid var(--line-strong);width:34px;height:34px;color:var(--heading);border-radius:50%;flex:none;place-items:center;font-weight:800;display:inline-grid}.mobile-menu{background:var(--btn2-bg);color:var(--btn2-ink);border-color:var(--btn2-border);padding:7px 13px}.topbar .container.row{flex-wrap:nowrap}.topbar .topnav{margin-right:auto}.header-tools{flex:none;order:3;align-items:center;gap:8px;display:flex}.theme-toggle{background:var(--btn2-bg);width:40px;height:40px;color:var(--btn2-ink);border:1px solid var(--btn2-border);border-radius:12px;place-items:center;padding:0;font-size:18px;display:inline-grid}.theme-toggle:hover{background:var(--btn2-hover);color:var(--heading);border-color:var(--accent);box-shadow:none}.theme-toggle .icon-sun{display:none}:root[data-theme=dark] .theme-toggle .icon-sun{display:block}:root[data-theme=dark] .theme-toggle .icon-moon{display:none}@media (prefers-color-scheme:dark){:root:not([data-theme]) .theme-toggle .icon-sun{display:block}:root:not([data-theme]) .theme-toggle .icon-moon{display:none}}.public-main{padding:34px 0 72px}.eyebrow{color:var(--accent);font-size:.78rem;font-weight:700}.badge{background:var(--accent-soft);color:var(--accent);border:1px solid var(--accent-ring);font-size:.74rem;font-weight:700}.status-dot{background:var(--sky);vertical-align:middle;width:7px;height:7px;box-shadow:0 0 0 4px var(--accent-soft);border-radius:50%;margin-left:6px;display:inline-block}.card,.panel,.course-card{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-sm);border-radius:22px}.panel,.card{padding:26px}.section{padding:40px 0}.section-head h2{margin-top:4px;font-size:clamp(1.5rem,2.4vw,2rem)}.section-head>a{color:var(--link);font-size:.86rem;font-weight:700}.grid{gap:22px}.notice.error,.error{background:var(--danger-bg);border-color:var(--danger-line);color:var(--danger-ink)}.notice.success,.success{background:var(--success-bg);border-color:var(--success-line);color:var(--success-ink)}.notice.warn{background:var(--warn-bg);color:var(--warn-ink)}.video-diagnostics ol{gap:8px;margin:12px 0 0;padding:0;list-style:none;display:grid}.video-diagnostics li{background:var(--success-bg);color:var(--success-ink);border-radius:10px;gap:2px;padding:8px 12px;display:grid}.video-diagnostics li.fail{background:var(--danger-bg);color:var(--danger-ink)}.video-diagnostics li span{font-size:.85rem}.empty{color:var(--muted);border-color:var(--line-strong);background:var(--surface)}.spinner{border-color:var(--line);border-top-color:var(--accent)}.lesson-row{border-color:var(--line);align-items:center}.lesson-row a,.card a:not(.button),.panel a:not(.button){color:var(--link)}.lesson-row a:hover{color:var(--link-hover)}summary{cursor:pointer;color:var(--heading);padding:4px}.prose{color:var(--text-soft)}progress{accent-color:var(--accent)}.chart-bar{background:var(--accent)}.skip-link{background:var(--btn-bg);color:var(--btn-ink)}.course-card{transition:transform .25s,border-color .25s,box-shadow .25s;overflow:hidden}.course-card:hover{border-color:var(--accent-ring);box-shadow:var(--shadow);transform:translateY(-5px)}.course-cover{background:var(--yale);height:196px}.course-cover img{filter:saturate(.9)}.card-body{padding:22px 24px 24px}.card-body h3{color:var(--heading);font-size:1.12rem}.card-body p{min-height:3em;color:var(--muted)}.card-body .row{border-top:1px solid var(--line);color:var(--text-soft);margin-top:15px;padding-top:15px;font-size:.84rem}.card-body strong{color:var(--accent);font-weight:800}.table-wrap{border-color:var(--line);background:var(--surface);box-shadow:var(--shadow-sm)}th{background:var(--table-head);color:var(--text-soft)}td{background:var(--table-row);border-color:var(--line);color:var(--text)}th{border-color:var(--line)}tbody tr:hover td{background:var(--table-hover)}.exam-toolbar{background:var(--surface);border-color:var(--line);box-shadow:var(--shadow)}.choice{border-color:var(--line);background:var(--surface)}.choice.selected{border-color:var(--accent);background:var(--accent-soft)}.choice.correct{border-color:var(--success-ink);background:var(--success-bg)}.choice.wrong{border-color:var(--danger-ink);background:var(--danger-bg)}.auth-card{border-top:4px solid var(--sky);box-shadow:var(--shadow)}.account-summary{background:linear-gradient(135deg, var(--yale), var(--indigo));color:#eef4fc;box-shadow:var(--shadow);border:0}.account-summary strong{color:#fff}.account-summary p,.account-summary small{color:#c6d6ea}.account-avatar{background:var(--sky);color:var(--indigo);box-shadow:none}.page-heading h1{margin:4px 0;font-size:clamp(1.7rem,3vw,2.1rem)}.page-heading p{color:var(--muted);margin:0;font-size:.88rem}.stat{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-sm);border-radius:18px;padding:22px}.stat strong{color:var(--heading);font-variant-numeric:tabular-nums}.stat span{color:var(--muted)}.landing-hero{overflow-clip-margin:0;grid-template-columns:1.15fr 1fr;align-items:center;gap:64px;min-height:640px;padding:50px 0 70px;display:grid;overflow-x:clip}.landing-copy{position:relative}.landing-copy:before{content:"ض";z-index:-1;color:#0000;-webkit-text-stroke:2px var(--accent-ring);opacity:.55;pointer-events:none;-webkit-user-select:none;user-select:none;font-size:clamp(14rem,24vw,22rem);font-weight:800;line-height:1;position:absolute;top:-70px;right:0}.landing-copy h1{letter-spacing:0;text-wrap:balance;max-width:740px;color:var(--hero-ink);margin:22px 0 20px;font-size:clamp(2.9rem,4.8vw,4.85rem);line-height:1.3}.landing-copy h1 em{background:linear-gradient(100deg, var(--baltic), var(--sky) 70%);color:#0000;-webkit-background-clip:text;background-clip:text;font-style:normal}:root[data-theme=dark] .landing-copy h1 em{background-image:linear-gradient(100deg, #b4dbff, var(--sky) 65%)}.landing-description{color:var(--text-soft);max-width:580px;margin-bottom:28px;font-size:1.08rem;line-height:2.05}.landing-copy>.badge{padding:6px 15px}.landing-copy>.actions{gap:14px}.landing-copy>.actions .button{min-width:160px}.landing-copy h1 em{padding-bottom:.12em;display:inline-block;position:relative}.landing-copy h1 em:after{content:"";background:var(--sky);opacity:.85;height:.2em;position:absolute;bottom:-.06em;left:6%;right:2%;-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 300 24' preserveAspectRatio='none'%3E%3Cpath d='M4 17C70 5 180 2 296 13' fill='none' stroke='%23000' stroke-width='7' stroke-linecap='round'/%3E%3Cpath d='M40 20C110 12 190 11 262 17' fill='none' stroke='%23000' stroke-width='3' stroke-linecap='round' opacity='.6'/%3E%3C/svg%3E") 50%/100% 100% no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 300 24' preserveAspectRatio='none'%3E%3Cpath d='M4 17C70 5 180 2 296 13' fill='none' stroke='%23000' stroke-width='7' stroke-linecap='round'/%3E%3Cpath d='M40 20C110 12 190 11 262 17' fill='none' stroke='%23000' stroke-width='3' stroke-linecap='round' opacity='.6'/%3E%3C/svg%3E") 50%/100% 100% no-repeat}.hero-proof{align-items:center;gap:14px;margin-top:26px;display:flex}.hero-proof p{color:var(--muted);margin:0;font-size:.86rem}.hero-proof strong{color:var(--heading)}.proof-avatars{display:flex}.proof-avatars span{border:3px solid var(--bg);color:#fff;background:var(--baltic);border-radius:50%;place-items:center;width:36px;height:36px;margin-left:-10px;font-size:.85rem;font-weight:800;display:grid}.proof-avatars span:nth-child(2){background:var(--sky);color:var(--indigo)}.proof-avatars span:nth-child(3){background:var(--yale)}.proof-avatars span:nth-child(4){background:var(--indigo)}.proof-avatars span:last-child{margin-left:0}.landing-trust{flex-wrap:wrap;gap:8px;margin:18px 0 0;padding:0;list-style:none;display:flex}.landing-trust li{border:1px solid var(--line);background:var(--surface);color:var(--text-soft);box-shadow:var(--shadow-sm);border-radius:999px;align-items:center;gap:6px;padding:5px 12px;font-size:.78rem;font-weight:600;display:inline-flex}.landing-trust svg{width:15px;height:15px;color:var(--accent)}.mentor-visual{min-width:0;padding:20px 35px 35px;position:relative}.mentor-visual:before{content:"";background:var(--bg-glow-1);filter:blur(70px);pointer-events:none;border-radius:50%;position:absolute;inset:12% 6%}.mentor-photo{aspect-ratio:4/5;background:linear-gradient(160deg, var(--baltic), var(--indigo));border:1px solid var(--line-strong);box-shadow:var(--shadow-lg);border-radius:160px 160px 30px 30px;position:relative;overflow:hidden}.mentor-photo img{object-fit:cover;object-position:center 20%;width:100%;height:100%}.mentor-photo:after{content:"";background:linear-gradient(#0000,#0f1b33e8 78%);position:absolute;inset:45% 0 0}.mentor-caption{z-index:1;text-align:center;color:#fff;position:absolute;bottom:26px;left:25px;right:25px}.mentor-caption strong{color:#fff;font-size:1.5rem;display:block}.mentor-caption small,.mentor-caption>span{color:#cfe0f5;font-size:.8rem}.orbit{border:1px solid var(--accent-ring);pointer-events:none;opacity:.7;border-radius:50%;position:absolute;inset:5px 12px 19px;transform:rotate(-23deg)}.orbit-two{opacity:.45;border-style:dashed;inset:35px 0 40px;transform:rotate(23deg)}.floating-note{z-index:2;background:var(--surface);color:var(--text);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:18px;align-items:center;gap:12px;padding:14px 18px;display:flex;position:absolute}.floating-note strong{color:var(--heading);font-size:.84rem;display:block}.floating-note small{color:var(--muted);font-size:.7rem}.note-top{top:18%;right:0;transform:rotate(3deg)}.note-bottom{background:var(--sky);color:var(--indigo);border-color:#0000;bottom:4%;left:0;transform:rotate(-3deg)}.note-bottom strong{color:var(--indigo)}.note-bottom small{color:#1f3d63}.note-icon{color:#fff;background:var(--yale);border-radius:11px;place-items:center;width:38px;height:40px;display:grid}.mentor-spark{color:var(--sky);font-size:3.4rem;position:absolute;top:-6px;left:13%}.brand-promise{color:#fff;isolation:isolate;background:linear-gradient(112deg, var(--indigo), var(--yale) 55%, var(--baltic));box-shadow:var(--shadow-lg);border:0;border-radius:28px;grid-template-columns:minmax(0,1.5fr) minmax(280px,1fr);align-items:center;gap:32px;margin:8px 0 18px;padding:40px 46px;display:grid;position:relative;overflow:hidden}.brand-promise:after{content:"ع";z-index:-1;color:#ffffff0d;pointer-events:none;font-size:17rem;font-weight:800;line-height:1;position:absolute;top:-40%;left:4%}.brand-promise h2{color:#fff;margin:6px 0;font-size:clamp(1.6rem,2.5vw,2.4rem)}.brand-promise h2 em{color:var(--sky);font-style:normal}.brand-promise p{color:#d4e1f1;margin:0;font-size:.88rem}.brand-promise .eyebrow{color:var(--sky)}.brand-promise:before{content:"";z-index:-1;-webkit-mask:var(--motif) 0 0/72px 72px;-webkit-mask:var(--motif) 0 0/72px 72px;mask:var(--motif) 0 0/72px 72px;background:#ffffff0d;position:absolute;inset:0}.promise-stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;display:grid}.promise-stats span{-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);text-align:center;color:#c9d9ee;background:#ffffff12;border:1px solid #ffffff24;border-radius:18px;flex-direction:column;align-items:center;gap:2px;padding:16px 10px 14px;font-size:.76rem;display:flex}.promise-stats svg{width:22px;height:22px;color:var(--sky);margin-bottom:4px}.promise-stats strong{color:#fff;font-variant-numeric:tabular-nums;font-size:1.9rem;line-height:1.3;display:block}.landing-numbers{border-color:var(--line)}.learning-features{grid-template-columns:repeat(3,1fr);gap:20px;padding:18px 0 10px;display:grid}.learning-features article{border:1px solid var(--line);background:var(--surface);min-height:150px;box-shadow:var(--shadow-sm);border-radius:20px;align-items:flex-start;gap:16px;padding:24px;transition:transform .2s,border-color .2s,box-shadow .2s;display:flex;position:relative}.learning-features article:hover{border-color:var(--accent-ring);box-shadow:var(--shadow);transform:translateY(-3px)}.feature-icon{border:1px solid var(--accent-ring);background:var(--accent-soft);color:var(--accent);border-radius:15px;place-items:center;padding:12px;display:grid}.learning-features small{background:var(--accent-soft);color:var(--accent);border-radius:999px;margin-bottom:4px;padding:1px 10px;font-size:.7rem;font-weight:800;display:inline-block}.learning-features article:not(:last-child):after{content:"";border-top:2px dashed var(--accent-ring);width:21px;position:absolute;top:50%;left:-21px}.learning-features article:hover .feature-icon{background:var(--sky);color:var(--indigo);border-color:var(--sky)}.feature-icon{transition:background .2s,color .2s}.course-cover .badge{color:#fff;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#0f1b33b3;border-color:#fff3;position:absolute;bottom:12px;right:12px}.course-free{background:var(--sky);color:var(--indigo);border-radius:999px;padding:3px 12px;font-size:.74rem;font-weight:800;position:absolute;top:12px;left:12px;box-shadow:0 6px 16px #0b142640}.course-cover img{transition:transform .5s}.course-card:hover .course-cover img{transform:scale(1.05)}.course-meta span{align-items:center;gap:6px;display:inline-flex}.course-meta svg{width:16px;height:16px;color:var(--accent)}.course-price{background:var(--accent-soft);border-radius:999px;padding:2px 12px}.course-cta{background:var(--surface-2);color:var(--accent);border-radius:12px;justify-content:space-between;align-items:center;margin-top:14px;padding:10px 14px;font-size:.84rem;font-weight:700;transition:background .2s,color .2s;display:flex}.course-cta svg{width:17px;transition:transform .2s}.course-card:hover .course-cta{background:var(--btn-bg);color:var(--btn-ink)}.course-card:hover .course-cta svg{transform:translate(-4px)}.learning-features h3{margin:2px 0 5px;font-size:1rem}.learning-features p{color:var(--muted);margin:0;font-size:.82rem}.journey-section{padding-top:56px}.journey-section .section-head{margin-bottom:8px}.public-main .section-head .eyebrow:before{content:"";background:var(--sky);vertical-align:middle;border-radius:3px;width:22px;height:3px;margin-left:8px;display:inline-block}.section-head p{max-width:560px;margin:4px 0 0;font-size:.9rem}.section-link{border:1px solid var(--btn2-border);background:var(--btn2-bg);color:var(--btn2-ink);border-radius:999px;align-items:center;gap:8px;padding:9px 16px;font-size:.84rem;font-weight:700;transition:border-color .2s,background .2s;display:inline-flex}.section-link:hover{border-color:var(--accent);background:var(--btn2-hover);color:var(--heading)}.section-link svg{width:17px}.home-courses{grid-template-columns:repeat(3,minmax(0,1fr))}.course-cover{background:linear-gradient(140deg, var(--yale), var(--indigo))}.courses-section .course-card h3{min-height:2.8em}.testimonials-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;display:grid}.testimonial-card{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-sm);border-radius:24px;flex-direction:column;gap:14px;padding:28px 28px 24px;transition:transform .2s,box-shadow .2s,border-color .2s;display:flex;position:relative}.testimonial-card:hover{box-shadow:var(--shadow);border-color:var(--accent-ring);transform:translateY(-3px)}.testimonial-card:before{content:"”";color:var(--accent-ring);pointer-events:none;font-family:Georgia,serif;font-size:5.5rem;line-height:1;position:absolute;top:6px;left:24px}.testimonial-stars{color:#e7a93a;font-size:1rem}.testimonial-stars span{color:var(--line-strong)}.testimonial-card p{color:var(--text-soft);flex:1;margin:0;font-size:.95rem;line-height:2;position:relative}.testimonial-card footer{border-top:1px solid var(--line);align-items:center;gap:12px;padding-top:14px;display:flex}.testimonial-card footer strong{color:var(--heading);font-size:.9rem;display:block}.testimonial-card footer small{color:var(--muted);font-size:.76rem}.testimonial-avatar{background:linear-gradient(140deg, var(--baltic), var(--sky));color:#fff;border-radius:50%;flex:none;place-items:center;width:42px;height:42px;font-size:1.05rem;font-weight:800;display:grid}.about{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-sm);isolation:isolate;border-radius:30px;grid-template-columns:minmax(240px,340px) 1fr;align-items:center;gap:48px;margin:24px 0;padding:40px;display:grid;position:relative;overflow:hidden}.about-photo{aspect-ratio:4/5;background:linear-gradient(160deg, var(--baltic), var(--indigo));box-shadow:var(--shadow);border-radius:120px 120px 26px 26px;position:relative;overflow:hidden}.about-photo img{object-fit:cover;object-position:center 18%;border-radius:0;width:100%;height:100%;max-height:none}.about-copy h2{margin:4px 0 8px;font-size:clamp(1.7rem,3vw,2.3rem)}.about-copy>p{color:var(--text-soft);max-width:620px;font-size:.95rem}.about-points{gap:12px;margin:22px 0 26px;padding:0;list-style:none;display:grid}.about-points li{align-items:center;gap:14px;display:flex}.about-points svg{box-sizing:content-box;background:var(--accent-soft);color:var(--accent);border-radius:12px;padding:9px}.about-points strong{color:var(--heading);font-size:.95rem;display:block}.about-points span{color:var(--muted);font-size:.84rem;line-height:1.7}.faq-section{grid-template-columns:minmax(0,.9fr) minmax(0,1.5fr);align-items:start;gap:44px;display:grid}.faq-intro{position:sticky;top:100px}.faq-intro h2{margin:4px 0 6px;font-size:clamp(1.6rem,2.6vw,2.1rem)}.faq-intro p{margin:0 0 20px}.faq-list{gap:12px;display:grid}.faq-list details{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-sm);border-radius:18px;transition:border-color .2s,box-shadow .2s}.faq-list details[open]{border-color:var(--accent-ring);box-shadow:var(--shadow)}.faq-list summary{justify-content:space-between;align-items:center;gap:14px;padding:18px 22px;font-size:.96rem;font-weight:800;list-style:none;display:flex}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"+";background:var(--accent-soft);width:30px;height:30px;color:var(--accent);border-radius:50%;flex:none;place-items:center;font-size:1.2rem;font-weight:700;transition:transform .2s;display:grid}.faq-list details[open] summary:after{transform:rotate(45deg)}.faq-list details p{color:var(--muted);margin:0;padding:0 22px 20px;font-size:.9rem;line-height:1.95}.demo-video-note{border:1px solid var(--warn-line);background:var(--warn-bg);color:var(--warn-ink);border-radius:12px;margin:0 0 14px;padding:11px 15px;font-size:.84rem}.site-footer{background:linear-gradient(180deg, var(--indigo), #111a2e);color:#c3d2e6;isolation:isolate;margin-top:60px;padding:0 0 26px;position:relative;overflow:hidden}.site-footer:before{content:"";z-index:-1;opacity:.5;-webkit-mask:var(--motif,none) 0 0/72px 72px;-webkit-mask:var(--motif,none) 0 0/72px 72px;mask:var(--motif,none) 0 0/72px 72px;background:#65afff0f;position:absolute;inset:0}.site-footer .container{position:relative}.footer-cta{color:#fff;background:radial-gradient(circle at 12% 30%, #65afff40, transparent 50%), linear-gradient(112deg, var(--yale), var(--baltic));border:1px solid #ffffff1f;border-radius:26px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:28px;margin-bottom:-40px;padding:30px 36px;display:flex;transform:translateY(-50%);box-shadow:0 24px 60px #0b142640}.site-footer:has(.footer-cta){margin-top:120px;overflow:visible}.footer-cta h2{color:#fff;margin:4px 0;font-size:clamp(1.4rem,2.4vw,1.95rem)}.footer-cta h2 em{color:var(--sky);font-style:normal}.footer-cta p{color:#d3e1f2;margin:0;font-size:.9rem}.footer-cta .eyebrow{color:var(--sky)}.footer-cta .button{background:var(--sky);color:var(--indigo);border-color:var(--sky)}.footer-cta .button:hover{color:var(--indigo);background:#8cc4ff}.footer-cta .button.secondary{color:#fff;background:#ffffff14;border-color:#ffffff38}.footer-cta .button.secondary:hover{color:#fff;background:#ffffff26}.footer-grid{grid-template-columns:minmax(0,1.6fr) repeat(3,minmax(0,1fr));gap:36px;padding:44px 0 34px;display:grid}.site-footer.is-compact .footer-grid{padding-top:40px}.footer-brand .logo{color:#fff}.footer-brand .logo small{color:#9fb3cf}.footer-brand p{color:#a9bbd3;max-width:380px;margin:16px 0 0;font-size:.86rem;line-height:2}.site-footer nav{flex-direction:column;gap:10px;display:flex}.site-footer nav h3{color:#fff;margin:0 0 6px;font-size:.92rem}.site-footer nav a{color:#a9bbd3;width:fit-content;font-size:.86rem;transition:color .2s}.site-footer nav a:hover{color:var(--sky)}.footer-bottom{color:#8ea3c0;border-top:1px solid #ffffff17;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;padding-top:22px;font-size:.78rem;display:flex}.footer-bottom p{margin:0}.footer-motto{color:var(--sky);font-weight:700}.workspace{grid-template-columns:236px minmax(0,1fr);gap:28px;max-width:1500px}.sidebar{background:var(--sidebar-bg);height:calc(100dvh - 116px);max-height:none;box-shadow:var(--shadow);color:var(--sidebar-ink);border:0;border-radius:24px;flex-direction:column;margin-top:24px;padding:22px 13px 12px;display:flex;top:96px;overflow:hidden}.sidebar-heading{border-bottom:1px solid var(--sidebar-line);margin-bottom:8px;padding:0 12px 16px}.sidebar-heading .eyebrow{color:var(--sky);font-size:.64rem}.sidebar-heading strong{color:#fff;font-size:.96rem;display:block}.sidebar nav{border-radius:8px;flex:1;min-height:0;padding:0 3px 6px;display:block;overflow-y:auto}.nav-group{gap:3px;margin-bottom:15px;display:grid}.nav-group-title{color:var(--sidebar-muted);padding:8px 12px 5px;font-size:.66rem;font-weight:800}.nav-group+.nav-group{border-top:1px solid var(--sidebar-line);padding-top:10px}.sidebar a{color:var(--sidebar-ink);border-radius:12px;align-items:center;gap:11px;min-width:0;padding:10px 12px;font-size:.82rem;font-weight:600;display:flex}.sidebar a:before{content:none}.sidebar a svg{width:18px;height:18px;color:var(--sidebar-muted)}.sidebar a:hover{background:var(--sidebar-hover);color:#fff}.sidebar a.active{background:var(--sky);color:var(--indigo);font-weight:800;box-shadow:0 8px 18px #65afff33}.sidebar a.active svg{color:var(--indigo)}.nav-dot{background:currentColor;border-radius:50%;width:6px;height:6px;margin-right:auto}.sidebar .sidebar-support{border-top:1px solid var(--sidebar-line);border-radius:0;flex-shrink:0;margin-top:14px;padding-top:16px;font-size:.76rem}.sidebar-support small{color:var(--sidebar-muted);font-size:.64rem;display:block}.sidebar-support>svg:last-child{width:15px;margin-right:auto}.dashboard-section-toggle{display:none}.dashboard-main{min-width:0;padding:28px 0 60px}.dashboard-main .page-heading{margin-bottom:22px;padding:5px 0 2px}.dashboard-main .page-heading h1{font-size:1.8rem}.overview-welcome{isolation:isolate;color:#fff;background:radial-gradient(circle at 0 50%, #65afff33, transparent 45%), linear-gradient(112deg, var(--indigo), var(--yale));box-shadow:var(--shadow);border:0;border-radius:24px;justify-content:space-between;align-items:center;gap:24px;margin-bottom:20px;padding:26px 30px;display:flex;position:relative;overflow:hidden}.overview-welcome h2{color:#fff;margin:4px 0;font-size:1.9rem}.overview-welcome em{color:var(--sky);font-style:normal}.overview-welcome p{color:#c9d9ee;margin:0;font-size:.82rem}.overview-welcome .eyebrow{color:var(--sky);font-size:.68rem}.overview-welcome .button{white-space:nowrap;background:var(--sky);color:var(--indigo);border-color:var(--sky);font-size:.8rem}.welcome-orbit{z-index:-1;border:45px solid #65afff1a;border-radius:50%;width:390px;height:390px;position:absolute;top:-120px;left:10%}.overview-metrics{grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:22px;display:grid}.metric-card{background:var(--baltic);color:#fff;box-shadow:var(--shadow-sm);border:0;border-radius:20px;padding:20px 22px}.metric-card:nth-child(2){background:var(--sky);color:var(--indigo)}.metric-card:nth-child(3){background:var(--indigo)}.metric-card:nth-child(4){background:var(--yale)}.metric-card .row{gap:6px;font-size:.78rem;font-weight:700}.metric-card svg{opacity:.85;width:18px}.metric-card strong{font-variant-numeric:tabular-nums;color:inherit;margin:10px 0 2px;font-size:2.2rem;font-weight:800;line-height:1.35;display:block}.metric-card small{color:#d3e2f4;font-size:.7rem}.metric-card:nth-child(2) small{color:#1f3d63}.stats .stat:nth-child(2){background:var(--sky);border-color:var(--sky)}.stats .stat:nth-child(2) strong,.stats .stat:nth-child(2) span{color:var(--indigo)}.stats .stat:nth-child(3){background:var(--baltic);border-color:var(--baltic)}.stats .stat:nth-child(3) strong,.stats .stat:nth-child(3) span{color:#fff}.overview-charts{grid-template-columns:minmax(0,1.7fr) minmax(250px,1fr);gap:20px;display:grid}.dashboard-panel-head{justify-content:space-between;align-items:center;gap:15px;margin-bottom:22px;display:flex}.dashboard-panel-head h2{margin:3px 0 0;font-size:1.14rem}.dashboard-panel-head .eyebrow{font-size:.66rem}.dashboard-panel-head>a{color:var(--link);white-space:nowrap;font-size:.76rem;font-weight:700}.course-bar-item{margin-bottom:22px}.course-bar-item:last-child{margin:0}.course-bar-item .row{gap:8px;font-size:.82rem}.course-bar-item a{flex:1;min-width:0}.course-bar-item strong{white-space:nowrap;color:var(--accent);font-size:.8rem}.course-bar-item small{color:var(--muted);font-size:.66rem;font-weight:400}.bar-index{color:var(--muted);margin-left:10px;font-size:.68rem}.bar-track{background:var(--surface-3);border-radius:6px;height:10px;margin-top:9px;overflow:hidden}.bar-track>div{border-radius:inherit;background:var(--sky);height:100%}.course-bar-item:nth-child(2n) .bar-track>div{background:var(--baltic)}.performance-ring{aspect-ratio:1;width:min(205px,100%);margin:2px auto 18px;position:relative}.performance-ring svg{width:100%;height:100%}.performance-ring>div{flex-direction:column;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.performance-ring strong{color:var(--heading);font-size:2rem;line-height:1.5}.performance-ring span{color:var(--muted);font-size:.7rem}.performance-legend{justify-content:space-between;gap:12px;margin:12px 0 20px;font-size:.78rem;display:flex}.performance-legend i{background:var(--sky);border-radius:50%;width:8px;height:8px;margin-left:5px;display:inline-block}.performance-panel>.button{width:100%;font-size:.8rem}.overview-activity{grid-template-columns:1fr 1fr;gap:20px;display:grid}.student-activity{justify-content:flex-start;gap:12px}.student-activity a{flex:1}.student-activity small,.result-activity small{color:var(--muted);margin-top:3px;font-size:.7rem;display:block}.student-activity>a,.result-activity strong{font-size:.84rem}.result-activity .actions{font-size:.74rem}.calm-empty{align-items:center;gap:15px;padding:10px 0;display:flex}.calm-empty>svg{background:var(--accent-soft);box-sizing:content-box;color:var(--accent);border-radius:14px;padding:13px}.calm-empty strong{color:var(--heading);font-size:.88rem}.calm-empty p{color:var(--muted);margin:3px 0 0;font-size:.78rem}.student-dashboard-grid{grid-template-columns:minmax(0,1.5fr) minmax(260px,1fr);gap:20px;display:grid}.student-dashboard-grid .panel{min-width:0}.student-dashboard-list .course-card{margin:0 0 14px}.student-dashboard-list .course-card:last-child{margin-bottom:0}.student-dashboard-actions{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;display:grid}.student-dashboard-actions .panel{min-width:0}.student-dashboard-actions .lesson-row{font-size:.86rem}.local-video-import{border-color:var(--line);background:var(--surface-2)}.security-page-lock{color:var(--text)}.builder{gap:16px;display:grid}.builder-head{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:16px;display:flex}.builder-head h2{margin:2px 0 0;font-size:1.5rem}.builder-head p{margin:2px 0 0;font-size:.86rem}.builder-hint{background:var(--accent-soft);border-color:var(--accent-ring);color:var(--text-soft);font-size:.86rem}.builder-hint a{color:var(--link);font-weight:700}.builder-empty{border:2px dashed var(--line-strong);color:var(--muted);border-radius:20px;align-items:center;gap:16px;padding:22px;display:flex}.builder-empty svg{width:30px;height:30px;color:var(--accent)}.builder-empty strong{color:var(--heading)}.builder-empty p{margin:2px 0 0;font-size:.86rem}.builder-lectures{gap:14px;margin:0;padding:0;list-style:none;display:grid}.builder-lecture{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-sm);border-radius:20px;overflow:hidden}.builder-lecture>header{background:var(--surface-2);align-items:center;gap:12px;padding:12px 16px;display:flex}.builder-lecture.is-open>header{border-bottom:1px solid var(--line)}.builder-toggle{box-shadow:none;background:0 0;border:0;padding:0}.builder-toggle:hover{box-shadow:none;background:0 0;transform:none}.builder-index{background:var(--btn-bg);width:34px;height:34px;color:var(--btn-ink);border-radius:11px;flex:none;place-items:center;font-size:.9rem;font-weight:800;display:grid}.builder-index.is-new{background:var(--accent-soft);color:var(--accent);font-size:1.2rem}.builder-title{min-width:0;color:var(--heading);text-align:right;box-shadow:none;text-overflow:ellipsis;white-space:nowrap;background:0 0;border:1px dashed #0000;border-radius:9px;flex:1;padding:4px 8px;font-size:.98rem;font-weight:800;display:block;overflow:hidden}.builder-title:hover{background:var(--surface);border-color:var(--line-strong);color:var(--heading);box-shadow:none;transform:none}.builder-lessons .builder-title{font-size:.9rem;font-weight:600}.builder-title-input{flex:1;min-width:0;margin:0;padding:6px 10px;font-weight:700}.builder-count{color:var(--muted);flex:none;font-size:.78rem}.builder-tools{flex:none;align-items:center;gap:4px;display:flex}.icon-button{border:1px solid var(--line);background:var(--surface);width:32px;height:32px;color:var(--text-soft);box-shadow:none;border-radius:9px;place-items:center;padding:0;font-size:.9rem;line-height:1;display:inline-grid}.icon-button svg{width:16px;height:16px}.icon-button:hover{background:var(--surface-3);color:var(--heading);border-color:var(--line-strong);box-shadow:none;transform:none}.icon-button.danger:hover{background:var(--danger-bg);color:var(--danger-ink);border-color:var(--danger-line)}.icon-button:disabled{opacity:.35}.builder-body{gap:12px;padding:12px 16px 16px;display:grid}.builder-lessons{gap:6px;margin:0;padding:0;list-style:none;display:grid}.builder-lessons>li{border:1px solid var(--line);background:var(--surface);border-radius:14px;align-items:center;gap:10px;padding:8px 10px;transition:border-color .2s;display:flex}.builder-lessons>li:hover{border-color:var(--accent-ring)}.builder-source{background:var(--accent-soft);width:30px;height:30px;color:var(--accent);border-radius:9px;flex:none;place-items:center;display:grid}.builder-source svg{width:16px;height:16px}.builder-source.source-youtube{color:#d93025;background:#ff00001a}.builder-source.source-drive{color:#188038;background:#1fa4631f}.builder-tags{flex-wrap:wrap;flex:none;gap:6px;display:flex}.builder-tag{background:var(--surface-2);color:var(--muted);white-space:nowrap;border-radius:999px;padding:1px 9px;font-size:.7rem;font-weight:700}.builder-tag.is-free{background:var(--success-bg);color:var(--success-ink)}.builder-tag.is-warn{background:var(--warn-bg);color:var(--warn-ink)}.builder-import-error{color:var(--warn-ink);flex-basis:100%;font-size:.74rem;line-height:1.5}.builder-add-lesson{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.builder-add-lesson .secondary{padding:7px 14px;font-size:.84rem}.builder-lesson-form{border:1px solid var(--accent-ring);background:var(--surface-2);border-radius:16px;gap:12px;padding:16px;display:grid}.builder-tabs{align-items:center;gap:6px;display:flex}.builder-tabs>button[role=tab]{color:var(--muted);border:1px solid var(--line-strong);box-shadow:none;background:0 0;border-radius:999px;padding:6px 14px;font-size:.82rem}.builder-tabs>button[role=tab]:hover{box-shadow:none;background:var(--surface);color:var(--heading);transform:none}.builder-tabs>button.is-active{background:var(--btn-bg);color:var(--btn-ink);border-color:var(--btn-bg)}.builder-cancel{margin-right:auto}.builder-single{grid-template-columns:minmax(0,1fr) minmax(0,1.3fr);align-items:start;gap:14px;display:grid}.builder-single>button,.builder-upload{grid-column:1/-1}.builder-single>button{justify-self:start}.builder-upload{flex-wrap:wrap;align-items:center;gap:16px;display:flex}.builder-upload .button{cursor:pointer;margin:0;padding:8px 14px;font-size:.82rem}.builder-detect{color:var(--muted);margin-top:6px;font-size:.76rem;display:block}.builder-detect.is-ok{color:var(--success-ink);font-weight:700}.builder-detect.is-bad{color:var(--danger-ink)}.builder-bulk{gap:10px;display:grid}.builder-bulk textarea{min-height:140px;font-family:inherit}.builder-bulk>button{justify-self:start}.builder-new-lecture{border:2px dashed var(--line-strong);background:var(--surface);cursor:text;border-radius:20px;flex-wrap:wrap;align-items:center;gap:12px;padding:14px 16px;display:flex}.builder-new-lecture:focus-within{border-color:var(--accent);border-style:solid}.builder-new-lecture.needs-name{border-color:var(--warn-ink);border-style:solid}.builder-new-lecture-label{color:var(--heading);cursor:pointer;flex:none;align-items:center;gap:10px;margin:0;font-size:.95rem;font-weight:800;display:inline-flex}.builder-new-lecture input{border:1px solid var(--input-border);background:var(--input-bg);min-width:220px;color:var(--text);border-radius:12px;flex:1;margin:0;padding:11px 14px}.builder-new-lecture input:focus{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}.builder-new-lecture.needs-name input{border-color:var(--warn-ink)}.builder-new-lecture>button{flex:none}.builder-new-lecture-hint{color:var(--warn-ink);flex-basis:100%;font-size:.82rem;font-weight:700}.builder-check,.select-cell input,.builder-selection input[type=checkbox]{width:18px;height:18px;accent-color:var(--accent);cursor:pointer;flex:none;margin:0}.builder-check:disabled{cursor:default;opacity:.6}.builder-selection{border:1px solid var(--line);background:var(--surface-2);border-radius:14px;flex-wrap:wrap;align-items:center;gap:10px 16px;margin:12px 0;padding:10px 14px;font-size:.86rem;display:flex}.builder-selection .check{color:var(--heading);align-items:center;gap:8px;margin:0;font-weight:700;display:inline-flex}.builder-selection.has-selection{border-color:var(--danger-line);background:var(--danger-bg);color:var(--danger-ink)}.builder-selection.has-selection .muted{color:inherit}.builder-selection>button.danger{padding:7px 14px;font-size:.84rem}.builder-lessons>li.is-selected,tr.is-selected>td{background:var(--danger-bg)}.builder-lessons>li.is-selected{border-color:var(--danger-line)}.select-cell{text-align:center;width:42px}.delete-dialog-backdrop{z-index:1000;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);background:#0b1220a6;place-items:center;padding:16px;display:grid;position:fixed;inset:0}.delete-dialog{border:1px solid var(--line);background:var(--surface);width:min(480px,100%);max-height:calc(100dvh - 32px);color:var(--text);box-shadow:var(--shadow-lg);border-radius:22px;padding:22px 24px;overflow:auto}.delete-dialog h2{color:var(--heading);overflow-wrap:anywhere;margin:0 0 12px;font-size:1.15rem}.delete-dialog p{margin:8px 0}.delete-dialog-list{gap:4px;margin:8px 0;padding-right:20px;font-weight:700;display:grid}.delete-dialog .notice{margin:8px 0}.delete-dialog-students .check{border-top:1px solid var(--danger-line);cursor:pointer;align-items:flex-start;gap:8px;margin:10px 0 0;padding-top:10px;font-weight:700;display:flex}.delete-dialog-students .check input{width:18px;height:18px;accent-color:var(--danger-ink);flex:none;margin:2px 0 0}.delete-dialog .actions{justify-content:flex-start;margin-top:18px}@media (max-width:720px){.builder-lecture>header{flex-wrap:wrap;padding:10px 12px}.builder-lecture>header .builder-title{flex-basis:calc(100% - 92px)}.builder-count{margin-right:74px}.builder-lecture>header .builder-tools{margin-right:auto}.builder-lessons>li{flex-wrap:wrap}.builder-lessons .builder-title{flex-basis:calc(100% - 82px)}.builder-lessons .builder-tools{margin-right:auto}.builder-single{grid-template-columns:1fr}.builder-new-lecture input{flex-basis:100%;min-width:0}.builder-new-lecture>button{width:100%}}@keyframes surface-enter{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}.landing-copy,.mentor-visual,.overview-welcome,.metric-card{animation:.5s both surface-enter}.metric-card:nth-child(2){animation-delay:60ms}.metric-card:nth-child(3){animation-delay:.12s}.metric-card:nth-child(4){animation-delay:.18s}@media (min-width:1600px){.workspace{grid-template-columns:250px minmax(0,1fr);gap:34px}}@media (max-width:1150px){.container{width:calc(100% - 40px)}.topnav{gap:12px;font-size:.78rem}.topnav .nav-account{gap:0;font-size:0}.nav-account .mini-avatar{font-size:.8rem}.workspace{grid-template-columns:205px minmax(0,1fr);gap:20px}.sidebar{padding-inline:8px}.landing-hero{gap:28px}.mentor-visual{padding-inline:24px}.metric-card{padding:17px 14px}.overview-charts{grid-template-columns:minmax(0,1.3fr) minmax(220px,1fr);gap:15px}}@media (max-width:980px){.workspace{display:block}.sidebar{border-radius:18px;height:auto;margin-top:20px;padding:9px;display:block;position:static}.sidebar-heading,.sidebar-support{display:none!important}.dashboard-section-toggle{width:100%;box-shadow:none;color:#fff;border-color:var(--sidebar-line);background:0 0;justify-content:space-between;display:flex}.dashboard-section-toggle:hover{background:var(--sidebar-hover);color:#fff}.dashboard-section-toggle>span:nth-child(2){text-align:right;flex:1}.sidebar nav{padding:14px 2px 0;display:none;overflow:visible}.sidebar nav.open{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.nav-group{align-content:start;margin:0;padding:0;display:grid}.nav-group+.nav-group{border:0;padding:0}.sidebar a{white-space:normal}.nav-dot{display:none}.overview-welcome h2{font-size:1.6rem}.landing-copy h1{font-size:2.8rem}.learning-features{gap:14px}.home-courses{grid-template-columns:repeat(2,minmax(0,1fr))}.faq-section{grid-template-columns:1fr;gap:22px}.faq-intro{position:static}.about{grid-template-columns:minmax(200px,260px) 1fr;gap:30px;padding:30px}.footer-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}.footer-brand{grid-column:1/-1}}@media (max-width:720px){.container{width:calc(100% - 32px)}.topbar{padding:11px 0}.logo{font-size:1rem}.logo-icon{border-radius:13px;width:40px;height:40px;font-size:1.45rem}.topnav{background:var(--surface);border-bottom:1px solid var(--line);box-shadow:var(--shadow);align-items:stretch;gap:8px;padding:16px 20px;top:66px}.topnav>a{padding:8px}.topnav .nav-account{gap:10px;font-size:.88rem}.public-main{padding-top:22px}.landing-hero{grid-template-columns:1fr;gap:34px;min-height:0;padding:14px 0 40px}.landing-copy:before{font-size:11rem;top:-40px;right:-10px}.landing-copy h1{font-size:clamp(2.4rem,10vw,3.4rem);line-height:1.3}.landing-description{font-size:.95rem;line-height:1.95}.landing-copy>.actions .button{flex:1;min-width:0;padding-inline:12px}.landing-trust{gap:9px;font-size:.7rem}.mentor-visual{width:calc(100% - 12px);max-width:440px;margin-inline:auto;padding:10px 26px 25px}.orbit{inset:14px 18px 5px;transform:none}.orbit-two{inset:28px 8px 15px;transform:none}.mentor-photo{aspect-ratio:1;border-radius:100px 100px 26px 26px}.mentor-caption{bottom:20px}.mentor-caption strong{font-size:1.25rem}.floating-note{display:none}.mentor-spark{font-size:2.4rem;top:-14px}.brand-promise{border-radius:22px;grid-template-columns:1fr;gap:20px;padding:26px}.brand-promise h2{font-size:1.55rem}.promise-stats{gap:8px}.promise-stats span{padding:12px 6px;font-size:.7rem}.promise-stats strong{font-size:1.5rem}.learning-features article:not(:last-child):after{border-top:0;border-left:2px dashed var(--accent-ring);width:0;height:15px;top:auto;bottom:-15px;left:50%}.hero-proof{margin-top:22px}.learning-features{grid-template-columns:1fr;gap:14px;padding-top:18px}.learning-features article{min-height:0;padding:18px}.journey-section{padding-top:28px}.section{padding:28px 0}.section-head{gap:10px;margin-bottom:20px}.about{grid-template-columns:1fr;gap:22px;padding:24px}.about img{justify-self:center;width:180px}.panel,.card{padding:20px}.dashboard-main{padding-top:22px}.page-heading .actions{width:100%}.page-heading .button{flex:1;padding:10px 12px;font-size:.78rem}.overview-welcome{flex-wrap:wrap;gap:16px;padding:22px}.overview-metrics{grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.metric-card{padding:17px}.metric-card strong{font-size:1.8rem}.overview-charts,.overview-activity,.student-dashboard-grid,.student-dashboard-actions{grid-template-columns:1fr;gap:0}.courses-section .course-card h3{min-height:0}.home-courses,.testimonials-grid{grid-template-columns:1fr;gap:14px}.section-head .section-link{justify-content:center;width:100%}.testimonial-card{padding:22px 20px 18px}.about{border-radius:24px;grid-template-columns:1fr;gap:22px;padding:22px}.about-photo{justify-self:center;width:min(240px,70%)}.about-copy .actions,.footer-cta .actions{flex-direction:column;align-items:stretch}.about-copy .actions .button{width:100%}.faq-list summary{padding:16px 18px;font-size:.9rem}.faq-list details p{padding:0 18px 18px}.site-footer:has(.footer-cta){margin-top:140px}.footer-cta{border-radius:22px;padding:24px 22px;transform:translateY(-45%)}.footer-cta .actions,.footer-cta .button{width:100%}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 18px;padding-top:20px}.footer-bottom{text-align:center;justify-content:center}}@media (max-width:560px){.sidebar nav.open{grid-template-columns:1fr}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}@media print{.sidebar,.topbar,.site-footer,.overview-welcome,.landing-hero .actions,.theme-toggle{display:none!important}.site-shell,.is-dashboard,.panel,.card,.metric-card,.stat{color:#000!important;box-shadow:none!important;background:#fff!important}.site-shell:before{display:none}}