*,*:before,*:after{box-sizing:border-box}html,body{margin:0}body{font-family:var(--sans);color:var(--ink);background:var(--page);line-height:1.62;-webkit-font-smoothing:antialiased;min-height:100vh}body:before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.045;mix-blend-mode:multiply;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}h1,h2,h3{font-family:var(--display);font-weight:700;letter-spacing:-.022em;line-height:1.1;margin:0;color:var(--ink)}.muted{color:var(--muted)}.grad-text{color:var(--violet)}.kicker{display:inline-block;font-family:var(--sans);font-weight:700;font-size:var(--fs-xs);letter-spacing:.2em;text-transform:uppercase;color:var(--muted)}button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}[hidden]{display:none!important}.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:600;font-size:var(--fs-md);padding:14px 26px;border-radius:999px;background:var(--violet);color:#fff;position:relative;box-shadow:inset 0 1px #ffffff38;transition:transform .2s var(--ease),box-shadow .25s var(--ease),filter .2s}.btn:hover{transform:translateY(-2px);box-shadow:0 16px 34px -14px #1c162861,inset 0 1px #ffffff47;filter:brightness(1.05) saturate(1.03)}.btn:active{transform:translateY(0)}.btn svg{width:16px;height:16px}.btn:disabled{opacity:.5;transform:none;cursor:default;filter:grayscale(.3)}.btn-ghost{background:transparent;color:var(--muted);box-shadow:none;padding:9px 15px;border:1px solid transparent}.btn-ghost:hover{background:var(--surface);color:var(--ink);transform:none;filter:none;box-shadow:var(--shadow-sm)}.btn-soft{background:var(--surface);color:var(--violet-ink);box-shadow:inset 0 0 0 1px var(--line-2)}.btn-soft:hover{background:var(--surface-2);box-shadow:inset 0 0 0 1px var(--violet-2);transform:translateY(-2px);filter:none}.btn-done{background:#6539c912;color:var(--violet-ink);box-shadow:inset 0 0 0 1px #6539c938,0 8px 18px -12px #1c16282e}.btn-done:hover{filter:brightness(1.01);transform:translateY(-2px);box-shadow:inset 0 0 0 1px #6539c97a,0 10px 22px -12px #1c162838}:focus-visible{outline:2px solid var(--violet-2);outline-offset:3px;border-radius:8px}#loading{min-height:100vh;display:grid;place-items:center}.loader{width:44px;height:44px;border-radius:50%;background:conic-gradient(from 0deg,transparent,#E05090,#6539C9,transparent);-webkit-mask:radial-gradient(farthest-side,transparent calc(100% - 4px),#000 calc(100% - 3px));mask:radial-gradient(farthest-side,transparent calc(100% - 4px),#000 calc(100% - 3px));animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.ring{position:relative;display:inline-grid;place-items:center;flex:none}.ring svg{transform:rotate(-90deg);display:block}.ring .track{stroke:#241d301a}.ring .fill{stroke:var(--violet);stroke-linecap:round;transition:stroke-dashoffset .7s var(--ease)}.ring .lbl{position:absolute;inset:0;display:grid;place-items:center;font-weight:700;font-size:var(--fs-xs);color:var(--ink);letter-spacing:-.02em}.ring.done .lbl{color:var(--violet-ink)}#auth{min-height:100vh;display:grid;place-items:center;padding:40px 20px;position:relative;overflow:hidden;background:radial-gradient(42rem 32rem at 12% 18%,rgba(130,87,224,.16),transparent 70%),radial-gradient(36rem 28rem at 88% 88%,rgba(224,80,144,.13),transparent 70%),radial-gradient(30rem 22rem at 70% 8%,rgba(201,168,76,.08),transparent 70%),#f7f3ee}.auth-scene{width:100%;max-width:1040px;display:grid;grid-template-columns:minmax(0,1fr) 440px;gap:64px;align-items:center;position:relative}.auth-intro{color:var(--ink)}.auth-intro-logo{height:34px;width:auto;display:block;margin-bottom:36px}.auth-intro-kicker{display:inline-block;font:700 .72rem/1 "League Spartan",var(--font-body, sans-serif);letter-spacing:.16em;text-transform:uppercase;color:var(--violet-ink);background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 13px 6px;margin-bottom:18px}.auth-intro-titre{font:700 clamp(2.2rem,4.2vw,3.2rem)/1.04 "League Spartan",var(--font-body, sans-serif);letter-spacing:-.02em;margin:0 0 34px;text-wrap:balance;max-width:14ch;color:var(--ink)}.auth-intro-liste{list-style:none;margin:0;padding:0;display:grid;gap:20px;max-width:42ch}.auth-intro-liste li{display:flex;gap:14px;align-items:flex-start}.auth-intro-liste .ai-ic{flex:none;width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:#fff;color:var(--violet);border:1px solid var(--line);box-shadow:0 8px 20px -14px #6539c980}.auth-intro-liste .ai-ic svg{width:20px;height:20px}.auth-intro-liste b{display:block;font-size:1rem;color:var(--ink);margin-bottom:2px}.auth-intro-liste li>span:last-child{font-size:.95rem;line-height:1.5;color:var(--muted)}.auth-scene .auth-card{border-radius:22px;border-color:#6539c91a;box-shadow:0 30px 70px -40px #3c1e6e66}.auth-scene .auth-card .auth-logo{display:none}@media(max-width:880px){#auth{place-items:start center;padding:28px 16px 40px}.auth-scene{grid-template-columns:minmax(0,1fr);gap:22px;max-width:460px}.auth-scene .auth-card{min-width:0}.auth-link{white-space:normal;text-align:left}.auth-intro-logo{margin-bottom:0;height:30px}.auth-intro-kicker,.auth-intro-titre,.auth-intro-liste{display:none}.auth-scene .auth-card{padding:32px 24px}}.auth-card{width:100%;max-width:440px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:42px 38px;text-align:left;position:relative;overflow:hidden}.auth-logo{height:30px;width:auto;display:block;margin-bottom:26px}.auth-eyebrow{margin-bottom:13px}.auth-card h1{font-size:clamp(1.9rem,4vw,2.35rem);line-height:1.08;margin-bottom:12px}.auth-card p.lead{color:var(--muted);margin:0 0 26px;font-size:var(--fs-lg);line-height:1.65}.field label{display:block;font-size:var(--fs-sm);font-weight:600;color:var(--muted);margin-bottom:7px}.field input{width:100%;padding:14px 16px;font:inherit;color:var(--ink);border:1px solid var(--line-2);border-radius:var(--r-sm);background:var(--surface);transition:border-color .2s,box-shadow .2s}.field input::placeholder{color:var(--faint)}.field input:focus{outline:none;border-color:var(--violet-2);box-shadow:0 0 0 4px #6539c924}.field input:disabled{color:var(--muted);background:var(--surface-2);cursor:not-allowed}.auth-card .btn{width:100%;margin-top:20px}.auth-msg{margin:16px 0 0;font-size:var(--fs-md);min-height:1.2em}.auth-msg.ok{color:var(--violet-ink)}.auth-foot{margin-top:24px;font-size:var(--fs-sm);color:var(--faint)}.auth-msg.err{color:var(--rose-ink)}.auth-seg{display:flex;gap:4px;padding:4px;margin-bottom:22px;border-radius:var(--r-sm);background:#6539c917;border:1px solid var(--line)}.auth-seg button{flex:1;padding:9px 12px;border-radius:var(--r-sm);font-weight:600;font-size:var(--fs-md);color:var(--muted);transition:background .18s,color .18s,box-shadow .18s}.auth-seg button.is-on{background:#fff;color:var(--violet-ink);box-shadow:var(--shadow-sm)}.auth-seg button:not(.is-on):hover{color:var(--ink)}#auth-form .field+.field{margin-top:14px}.auth-alt{display:flex;flex-direction:column;align-items:flex-start;gap:9px;margin-top:18px}.auth-link{font-size:var(--fs-md);font-weight:600;color:var(--violet-ink);padding:2px 0;transition:color .16s}.auth-link:hover{color:var(--rose-ink);text-decoration:underline;text-underline-offset:3px}.userchip{cursor:pointer;transition:background .16s,box-shadow .16s}.userchip:hover{background:#ffffffe6;box-shadow:var(--shadow-sm)}.pmodal{position:fixed;inset:0;z-index:60;display:grid;place-items:center;padding:24px}.pmodal-backdrop{position:absolute;inset:0;background:#1e122d6b;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);animation:fade .3s var(--ease)}.pmodal-card{position:relative;width:100%;max-width:440px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:34px 34px 30px;box-shadow:var(--shadow),var(--shadow-lg);animation:pop .34s var(--ease);max-height:90vh;overflow-y:auto}@keyframes pop{0%{opacity:0;transform:translateY(14px) scale(.98)}to{opacity:1;transform:none}}.pmodal-x{position:absolute;top:16px;right:16px;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;color:var(--muted);transition:color .16s,background .16s}.pmodal-x:hover{color:var(--ink);background:var(--surface-2)}.pmodal-card h2{font-size:var(--fs-2xl);margin:6px 0 16px}.pmodal-card .field{margin-bottom:14px}.pmodal-card .btn{width:100%}.pmodal-sep{height:1px;background:var(--line);margin:26px 0 22px}.factures{display:flex;flex-direction:column}.fact{display:flex;align-items:flex-start;gap:12px;padding:13px 0;border-top:1px solid var(--line)}.fact:first-child{border-top:0}.fact-txt{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}.fact-txt b{font-size:var(--fs-sm);font-weight:600;color:var(--ink);line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.fact-txt span{font-family:var(--sans);font-size:var(--fs-xs);color:var(--faint)}.fact-prix{font-family:var(--sans);font-size:var(--fs-sm);font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums;flex:none}.fact-dl{flex:none;font-family:var(--sans);font-size:var(--fs-xs);font-weight:600;color:var(--violet-ink);text-decoration:none;padding:6px 12px;border-radius:999px;border:1px solid var(--line-2);transition:background .15s,border-color .15s}.fact-dl:hover{background:var(--surface-2);border-color:var(--violet-3)}.fact-vide{font-family:var(--sans);font-size:var(--fs-xs);color:var(--faint);line-height:1.6;margin:0}.fact+.fact-vide{margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}.fact-vide a{color:var(--violet-ink)}.pf-avatar-row{display:flex;align-items:center;gap:16px;margin:4px 0 20px}.pf-avatar{width:72px;height:72px;border-radius:50%;flex:none;display:grid;place-items:center;background:var(--violet);color:#fff;font-weight:700;font-size:1.6rem;overflow:hidden;box-shadow:0 8px 20px -10px #1c16284d,inset 0 1px #ffffff4d}.pf-avatar img{width:100%;height:100%;object-fit:cover;display:block}.pf-avatar-actions{display:flex;flex-direction:column;align-items:flex-start;gap:7px}.pf-avatar-actions .btn-soft{width:auto;padding:9px 16px;font-size:var(--fs-md)}.pf-avatar-actions .pf-remove{font-size:var(--fs-sm);color:var(--faint);background:none;padding:2px 4px}.pf-avatar-actions .pf-remove:hover{color:var(--rose-ink)}.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;padding:15px 30px;background:#ffffffd1;-webkit-backdrop-filter:saturate(1.2) blur(14px);backdrop-filter:saturate(1.2) blur(14px);border-bottom:1px solid var(--line)}.brand{display:inline-flex;align-items:center}.brand-logo{height:26px;width:auto;display:block}.topnav{display:flex;align-items:center;gap:4px;margin-right:auto;margin-left:22px}.topnav a{font-size:var(--fs-md);font-weight:600;color:var(--muted);padding:8px 14px;border-radius:999px;text-decoration:none}.topnav a:hover{background:var(--surface-2);color:var(--ink)}.topnav a.on{background:#6539c917;color:var(--violet-ink)}@media(max-width:620px){.topnav{margin-left:8px}.topnav a{padding:8px 10px;font-size:var(--fs-sm)}}.usermenu{display:flex;align-items:center;gap:10px}.userchip{display:flex;align-items:center;gap:10px;padding:5px 15px 5px 5px;border-radius:999px;background:#fff9;border:1px solid var(--line);box-shadow:var(--shadow-sm)}.usermenu .email{font-size:var(--fs-sm);font-weight:500;color:var(--muted);letter-spacing:-.005em}.avatar{width:34px;height:34px;border-radius:50%;background:var(--violet);color:#fff;display:grid;place-items:center;font-weight:700;font-size:var(--fs-sm);box-shadow:0 5px 12px -6px #1c162847,inset 0 1px #ffffff4d;overflow:hidden}.avatar img{width:100%;height:100%;object-fit:cover;display:block}.iconbtn-top{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;flex:none;color:var(--muted);border:1px solid var(--line);background:#fff9;box-shadow:var(--shadow-sm);transition:color .16s,border-color .16s,box-shadow .16s,background .16s,transform .16s}.iconbtn-top:hover{color:var(--violet-ink);border-color:var(--line-2);background:#fff;box-shadow:var(--shadow);transform:translateY(-1px)}.iconbtn-top svg{width:18px;height:18px}.wrap{max-width:1160px;margin:0 auto;padding:46px 30px 110px}.view{animation:fade .45s var(--ease)}@keyframes fade{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}.dash-head{margin-bottom:36px}.dash-head h1{font-size:clamp(2.1rem,4vw,3.1rem);margin:10px 0 8px}.dash-head .dash-sub{color:var(--muted);font-size:var(--fs-lg);max-width:46ch}.resume{position:relative;display:grid;grid-template-columns:230px 1fr auto;align-items:center;gap:30px;border:1px solid var(--line);border-radius:var(--r-md);padding:24px;margin-bottom:52px;overflow:hidden;background:var(--surface);border-color:var(--line-2)}.resume .thumb{aspect-ratio:16/10;border-radius:var(--r-sm);overflow:hidden;box-shadow:0 14px 30px -18px #1c162859}.resume .body{min-width:0}.resume h2{font-size:clamp(1.4rem,2.4vw,1.9rem);margin:8px 0 6px}.resume .sub{color:var(--muted);font-size:var(--fs-md)}.resume .cta-wrap{display:flex;flex-direction:column;align-items:center;gap:14px}@media(max-width:760px){.resume{grid-template-columns:1fr}.resume .thumb{max-width:280px}.resume .cta-wrap{flex-direction:row;align-self:flex-start}}.seance-live{display:flex;align-items:center;gap:22px;flex-wrap:wrap;border:1px solid var(--line);border-radius:var(--r-md);padding:20px 24px;margin-bottom:28px;background:linear-gradient(135deg,#6539c912,#e050900f),var(--surface)}.seance-live .date{flex:none;width:70px;padding:8px 0;border-radius:14px;text-align:center;color:#fff;background:linear-gradient(165deg,#6539c9,#c04a92);font-weight:700;line-height:1.1}.seance-live .date b{display:block;font-size:26px}.seance-live .date small{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.1em}.seance-live .corps{flex:1 1 220px;min-width:0}.seance-live .corps h2{font-size:1.15rem;margin:2px 0 4px}.seance-live .corps .sub{color:var(--muted, #6b6680);font-size:var(--fs-sm, .92rem)}.seance-live .btn[aria-disabled=true]{background:var(--surface-2, #efeaf7);color:var(--muted, #6b6680);box-shadow:none;pointer-events:none}.seance-live.en-cours .date{background:linear-gradient(165deg,#1b7a3d,#22a35a)}.seance-live.replay{background:var(--surface)}.seance-live .live-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:#22a35a;margin-right:6px;box-shadow:0 0 #22a35a80;animation:seance-pouls 1.6s ease-out infinite}@keyframes seance-pouls{to{box-shadow:0 0 0 9px #22a35a00}}.curriculum .seance-live{margin:0 0 14px;padding:14px 16px;gap:14px}.curriculum .seance-live .date{width:58px}.curriculum .seance-live .date b{font-size:21px}.video video{position:absolute;inset:0;width:100%;height:100%;border:0;background:#000}.video--attente{display:grid;place-items:center;background:var(--surface-2, #f1eef7);color:var(--muted, #6b6680);font-size:var(--fs-sm, .92rem);text-align:center;padding:20px}.section-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:24px}.section-head h2{font-size:1.7rem}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:26px}.card{text-align:left;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;display:flex;flex-direction:column;width:100%;position:relative;background:var(--surface);box-shadow:var(--shadow-sm);transition:transform .32s var(--ease),box-shadow .32s var(--ease),border-color .32s var(--ease)}.card:hover{transform:translateY(-3px);border-color:var(--line-2);box-shadow:var(--shadow)}.thumb{position:relative;aspect-ratio:16/10;background:var(--surface-2);overflow:hidden}.thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s var(--ease)}.card:hover .thumb img{transform:scale(1.05)}.thumb.placeholder{display:grid;place-items:center}.ph-mark{width:58px;height:58px;opacity:.55}.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}.card-body h3{font-size:var(--fs-2xl)}.teacher{display:flex;align-items:center;gap:9px;font-size:var(--fs-md);color:var(--muted)}.teacher b{color:var(--ink);font-weight:700}.ava{display:inline-grid;place-items:center;border-radius:50%;background:var(--violet);flex:none;box-shadow:0 3px 9px -4px #1c16284d}.ava img{border-radius:50%;object-fit:cover;border:2px solid var(--surface);display:block}.ava.initials{color:#fff;font-weight:700;line-height:1}.card-desc{font-size:var(--fs-md);color:var(--muted);flex:1}.card-foot{display:flex;align-items:center;gap:12px;margin-top:6px;padding-top:14px;border-top:1px solid var(--line)}.card-foot .meta{font-size:var(--fs-sm);color:var(--muted);font-weight:500}.card-foot .meta b{color:var(--ink);font-weight:700}.start-hint{margin-left:auto;font-size:var(--fs-sm);font-weight:700;color:var(--violet-3);display:inline-flex;align-items:center;gap:5px;transition:gap .2s}.card:hover .start-hint{gap:9px}.done-pill{margin-left:auto;display:inline-flex;align-items:center;gap:6px;font-size:var(--fs-sm);font-weight:700;color:var(--rose-ink)}.empty{grid-column:1/-1;text-align:center;padding:66px 26px;border:1px dashed var(--line-2);border-radius:var(--r-md);color:var(--muted);background:#fff9}.backlink{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font-weight:600;font-size:var(--fs-md);margin-bottom:24px;padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:var(--surface);transition:color .18s,border-color .18s,box-shadow .18s}.backlink:hover{color:var(--ink);border-color:var(--line-2);box-shadow:var(--shadow-sm)}body.playing{overflow:hidden}body.playing #app{height:100vh;display:flex;flex-direction:column}body.playing .topbar{flex:none}.player-shell{flex:1;min-height:0;display:flex}.player-sidebar{width:384px;flex:none;overflow-y:auto;padding:0 20px 84px;background:#ffffffa8;border-right:1px solid var(--line);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);transition:margin-left .32s var(--ease);scrollbar-width:thin;scrollbar-color:rgba(101,57,201,.35) transparent}.player-sidebar::-webkit-scrollbar{width:7px}.player-sidebar::-webkit-scrollbar-thumb{background:#6539c947;border-radius:6px}.player-sidebar::-webkit-scrollbar-thumb:hover{background:#6539c973}.player-sidebar::-webkit-scrollbar-track{background:transparent}.player-main{--pad-main: clamp(24px, 5vw, 96px);flex:1;min-height:0;overflow-y:auto;padding:0 var(--pad-main);background:transparent}.player-inner{width:100%;max-width:1180px;margin:0 auto}body.no-sidebar .player-sidebar{margin-left:-384px}body.no-topbar .topbar{display:none}.sidebar-frozen{position:sticky;top:0;z-index:6;margin:0 -20px;padding:20px 20px 13px;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:0 8px 16px -12px #3c1e5029}.cur-head-fixed{display:flex;align-items:center;gap:13px}.chf-cover{width:56px;height:56px;border-radius:var(--r-sm);overflow:hidden;flex:none;background:var(--surface-2);box-shadow:0 8px 18px -8px #3c1e5073}.chf-cover img{width:100%;height:100%;object-fit:cover;display:block}.chf-body{flex:1;min-width:0}.chf-title{font-family:var(--display);font-weight:700;font-size:var(--fs-lg);line-height:1.15;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chf-teacher{display:flex;align-items:center;gap:7px;font-size:var(--fs-sm);color:var(--muted);margin-top:4px}.chf-teacher b{color:var(--ink);font-weight:600}.chf-meta{font-size:var(--fs-sm);color:var(--faint);margin-top:2px}.mod-title{display:flex;align-items:center;gap:10px;font-family:var(--sans);font-weight:600;font-size:var(--fs-xs);letter-spacing:.16em;text-transform:uppercase;color:var(--violet-ink);margin:26px 0 11px;padding:0 6px}.les-item{display:flex;align-items:center;gap:12px;width:100%;text-align:left;position:relative;cursor:pointer;padding:11px 14px;border-radius:var(--r-sm);color:var(--muted);font-size:var(--fs-md);line-height:1.4;transition:background .16s,color .16s,transform .18s var(--ease)}.les-item:hover{background:var(--surface-2);transform:translate(2px)}.les-vig{width:52px;height:30px;flex:none;border-radius:5px;object-fit:cover;display:block;background:var(--surface-2);filter:saturate(.55) contrast(.95);opacity:.85;transition:filter .22s var(--ease),opacity .22s var(--ease)}.les-item:hover .les-vig,.les-item.active .les-vig{filter:none;opacity:1}.les-vig--vide{background:var(--surface-2)}.les-item.active{background:#fff;color:var(--violet-ink);font-weight:600;box-shadow:0 8px 18px -12px #1c162838,inset 0 0 0 1px #6539c938}.les-item.active:before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;background:var(--violet)}.les-title{flex:1;min-width:0;font-weight:500;letter-spacing:-.004em}.les-item.active .les-title{font-weight:600}.les-item.done .les-title{font-weight:400}.les-check{width:22px;height:22px;border-radius:50%;flex:none;display:grid;place-items:center;border:1.5px solid var(--line-2);background:#ffffff80;color:transparent;transition:.16s;cursor:pointer}.les-check:hover{border-color:var(--violet-2);background:#6539c91f}@media(prefers-reduced-motion:no-preference){.les-check.just-done{animation:checkpop .32s cubic-bezier(.34,1.56,.64,1)}@keyframes checkpop{0%{transform:scale(.45)}60%{transform:scale(1.15)}to{transform:scale(1)}}}.les-item.done .les-check{background:var(--violet);border-color:transparent;color:#fff;box-shadow:0 3px 8px -3px #1c162847}.les-item.done .les-check:hover{filter:brightness(1.06)}.les-item.done{color:var(--muted)}.lesson-main .kicker{display:inline-block;margin:30px 0 10px}.lesson-main h1{font-size:clamp(1.6rem,2.6vw,2.4rem);margin-bottom:30px;line-height:1.1;white-space:normal}.video{position:relative;width:calc(100% + 2 * var(--pad-main));margin-left:calc(-1 * var(--pad-main));aspect-ratio:16 / 9;max-height:calc(100svh - 170px);border-radius:0;overflow:hidden;background:#000}.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.video--still{background:var(--surface-2, #f1eef7);aspect-ratio:auto;height:clamp(180px,30vh,320px)}.video--still img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}.video--facade{cursor:pointer}.video-poster{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}.video--facade:after{content:"";position:absolute;inset:0;background:#0a06123d;transition:background .3s var(--ease)}.video--facade:hover:after{background:#0a061257}.video-play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:2;width:clamp(62px,7vw,86px);aspect-ratio:1;border-radius:50%;display:grid;place-items:center;background:var(--violet);color:#fff;box-shadow:0 20px 48px -18px #000000a6,inset 0 1px #ffffff42;transition:transform .26s var(--ease),background .2s}.video--facade:hover .video-play{transform:translate(-50%,-50%) scale(1.07);background:var(--violet-3)}.video-play svg{width:34%;height:34%;margin-left:8%}.lesson-ess{max-width:var(--col);margin:34px 0 6px;text-align:left}.lesson-ess .lesson-text-kicker{margin:0 0 12px}.lesson-ess p{font-family:var(--lecture);font-size:var(--fs-xl);line-height:1.85;color:var(--ink);margin:0 0 14px}.lesson-ess p:last-child{margin-bottom:0}.lesson-transcript{max-width:var(--col);margin:18px 0 4px}.lesson-transcript summary{cursor:pointer;text-align:left;list-style:none;color:var(--muted);font-size:var(--fs-md);text-decoration:underline;text-underline-offset:3px}.lesson-transcript summary::-webkit-details-marker{display:none}.lesson-transcript[open] summary{color:var(--violet-ink);margin-bottom:10px}.lesson-text{font-family:var(--lecture);font-size:1rem;line-height:1.8;margin:14px 0 6px;color:var(--muted);text-align:left}.lesson-text p{margin:0 0 14px}.lesson-text p:last-child{margin-bottom:0}.lesson-text-kicker{display:block;font-family:var(--display);font-weight:700;font-size:var(--fs-xs);letter-spacing:.12em;text-transform:uppercase;color:var(--violet);margin:30px 0 10px}.lesson-res{margin:34px 0 6px;max-width:var(--col)}.res-title{font-size:var(--fs-xl);margin-bottom:14px}.res-file{display:flex;align-items:center;gap:14px;padding:13px 16px;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--surface);box-shadow:var(--shadow-sm);margin-bottom:11px;transition:transform .16s var(--ease),box-shadow .16s,border-color .16s}.res-file:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--line-2)}.res-ic{width:44px;height:44px;border-radius:var(--r-sm);display:grid;place-items:center;flex:none;background:#6539c912;color:var(--violet)}.res-ic svg{width:21px;height:21px}.res-body{display:flex;flex-direction:column;min-width:0;flex:1}.res-body b{color:var(--ink);font-weight:600;font-size:var(--fs-md)}.res-meta{font-size:var(--fs-sm);color:var(--muted)}.res-dl{color:var(--faint);flex:none;transition:color .16s,transform .16s}.res-file:hover .res-dl{color:var(--violet-ink);transform:translateY(1px)}.lesson-notes{margin:34px 0 6px;max-width:var(--col)}.notes-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:12px}.notes-head h2{font-size:var(--fs-xl)}.notes-status{font-size:var(--fs-sm);color:var(--violet-ink);font-weight:600;opacity:0;transition:opacity .25s}.notes-status.show{opacity:.85}.notes-ta{width:100%;min-height:128px;resize:vertical;padding:15px 17px;font:inherit;font-family:var(--lecture);font-size:var(--fs-lg);line-height:1.62;color:var(--ink);border:1px solid var(--line-2);border-radius:var(--r-sm);background:var(--surface);box-shadow:var(--shadow-sm);transition:border-color .2s,box-shadow .2s}.notes-ta::placeholder{color:var(--faint)}.notes-ta:focus{outline:none;border-color:var(--violet-2);box-shadow:0 0 0 4px #6539c921}.lesson-foot{position:sticky;bottom:0;z-index:5;display:flex;align-items:center;justify-content:space-between;gap:14px;background:var(--surface);border-top:1px solid var(--line);padding:18px 0 16px;margin-top:34px;flex-wrap:wrap}.navbtns{display:flex;gap:10px}.player-inner{padding-top:0}@media(prefers-reduced-motion:no-preference){.lesson-main>*{animation:lessonin .42s var(--ease) both}.lesson-main>*:nth-child(2){animation-delay:.05s}.lesson-main>*:nth-child(3){animation-delay:.1s}.lesson-main>*:nth-child(4){animation-delay:.15s}.lesson-main>*:nth-child(n+5){animation-delay:.2s}@keyframes lessonin{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}}.sidebar-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}.sidebar-top .backlink{margin-bottom:0}.curriculum{padding-top:8px}.curriculum .mod-title:first-child{margin-top:6px}.sb-toggle{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;flex:none;color:var(--muted);border:1px solid var(--line);background:var(--surface);transition:color .16s,border-color .16s,box-shadow .16s}.sb-toggle:hover{color:var(--violet-ink);border-color:var(--violet-2);box-shadow:var(--shadow-sm)}.sb-toggle svg{width:16px;height:16px}.imm-btn{position:fixed;z-index:30;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;color:var(--muted);background:#fffc;border:1px solid var(--line);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:var(--shadow-sm);opacity:.5;transition:opacity .18s,color .18s,box-shadow .18s,background .18s,transform .18s}.imm-btn:hover{opacity:1;color:var(--violet-ink);background:#fff;box-shadow:var(--shadow);transform:translateY(-1px)}.imm-btn svg{width:18px;height:18px}#toggle-topbar{top:88px;right:22px}#show-sidebar{top:88px;left:22px;display:none}body.no-topbar #toggle-topbar,body.no-topbar #show-sidebar{top:18px}body.no-sidebar #show-sidebar{display:grid}@media(max-width:860px){body.playing{overflow:auto}body.playing #app{height:auto;display:block}.player-shell{display:flex;flex-direction:column}.player-main{order:1;overflow:visible;padding:8px 18px 48px}.player-sidebar{order:2;width:auto;overflow:visible;border-right:0;border-top:1px solid var(--line);padding:24px 18px 64px}body.no-sidebar .player-sidebar{margin-left:0}.imm-btn,.sb-toggle{display:none!important}.video{width:100%}.lesson-foot{position:static;background:none}.lesson-main h1{white-space:normal;font-size:1.55rem}}@media(max-width:640px){.topbar{padding:13px 17px}.usermenu{gap:8px}.usermenu .email{display:none}.userchip{padding:4px;gap:0}.wrap{padding:32px 17px 90px}.resume{padding:18px;gap:18px}.grid{grid-template-columns:1fr;gap:20px}.section-head h2{font-size:1.45rem}}