:root{--bg: #090b11;--bg-2: #0e111a;--glass: rgba(255, 255, 255, .035);--glass-hover: rgba(255, 255, 255, .06);--glass-border: rgba(255, 255, 255, .085);--glass-border-hover: rgba(255, 255, 255, .17);--glass-highlight: rgba(255, 255, 255, .1);--glass-blur: 20px;--text: #f1f2f5;--muted: #969aa8;--faint: #7e8395;--accent: #c2f75a;--accent-deep: #9ed134;--accent-soft: rgba(194, 247, 90, .1);--accent-glow: rgba(194, 247, 90, .32);--embed-fg: #ffd479;--embed-bg: rgba(255, 212, 121, .1);--offline-fg: #c2f75a;--offline-bg: rgba(194, 247, 90, .1);--text-fg: #9aa0b0;--text-bg: rgba(255, 255, 255, .055);--danger: #ff6b52;--track: rgba(255, 255, 255, .07);--theater: #000000;--shadow: 0 4px 24px rgb(0 0 0 / 32%);--shadow-lift: 0 10px 40px rgb(0 0 0 / 45%);--sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;--mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;--radius: 16px;--radius-sm: 10px;color-scheme:dark}*{box-sizing:border-box}body{margin:0;background-color:var(--bg);color:var(--text);font:15px/1.55 var(--sans);-webkit-font-smoothing:antialiased;min-height:100vh}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;z-index:-2;pointer-events:none;background:radial-gradient(900px 620px at 88% -12%,rgba(194,247,90,.1),transparent 62%),radial-gradient(820px 580px at -12% 108%,rgba(76,132,255,.09),transparent 60%),radial-gradient(700px 500px at 50% 40%,rgba(120,190,255,.025),transparent 70%)}body:after{content:"";position:fixed;top:0;right:0;bottom:0;left:0;z-index:-1;pointer-events:none;opacity:.032;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}a{color:inherit;text-decoration:none}.icon{flex:none;vertical-align:-.15em}.app{max-width:1180px;margin:0 auto;padding:40px 26px 110px}.app.wide{max-width:1400px}.glass,.card,.resume,.composer,.login-card,.direction-picker{background:var(--glass);backdrop-filter:blur(var(--glass-blur));-webkit-backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);box-shadow:inset 0 1px 0 var(--glass-highlight),var(--shadow)}.masthead{display:flex;align-items:flex-end;justify-content:space-between;gap:34px;flex-wrap:wrap;padding-bottom:26px;margin-bottom:40px;border-bottom:1px solid rgba(255,255,255,.07)}.masthead h1{margin:0;font-size:42px;font-weight:700;letter-spacing:-.035em;background:linear-gradient(170deg,#fff 20%,#a8adbd 105%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}.lede{margin:8px 0 0;color:var(--muted);font-size:15px;max-width:56ch}.masthead-right{display:flex;flex-direction:column;align-items:flex-end;gap:16px}.connect-link{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:600;color:var(--accent);background:var(--accent-soft);border:1px solid rgba(194,247,90,.22);padding:7px 14px;border-radius:999px;transition:box-shadow .14s,background .14s}.connect-link:hover{background:#c2f75a29;box-shadow:0 0 22px -4px var(--accent-glow)}.totals{display:flex;gap:30px;margin:0;flex-wrap:wrap}.totals div{display:flex;flex-direction:column;gap:3px}.totals dt{font-size:10.5px;text-transform:uppercase;letter-spacing:.1em;color:var(--faint);font-weight:600}.totals dd{margin:0;font-size:23px;font-weight:650;font-variant-numeric:tabular-nums;letter-spacing:-.03em}.totals .of{color:var(--faint);font-weight:400;font-size:15px}.section-head{margin:0 0 16px;font-size:10.5px;font-weight:650;text-transform:uppercase;letter-spacing:.11em;color:var(--faint);display:flex;align-items:center;gap:7px}.rail-section{margin-bottom:46px}.rail{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(240px,272px);gap:14px;overflow-x:auto;padding:2px 2px 8px;scrollbar-width:thin}.resume{display:flex;flex-direction:column;gap:8px;border-radius:var(--radius);padding:15px 16px 14px;transition:transform .16s cubic-bezier(.2,.7,.3,1),box-shadow .16s,background .16s}.resume:hover{transform:translateY(-2px);background:var(--glass-hover);box-shadow:inset 0 1px #ffffff26,var(--shadow-lift),0 0 30px -14px var(--accent-glow)}.resume-course{font-size:10.5px;text-transform:uppercase;letter-spacing:.09em;color:var(--faint);font-weight:600}.resume-title{font-size:16px;line-height:1.3;font-weight:600;letter-spacing:-.015em;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.resume-meta{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums;display:flex;align-items:center;gap:6px}.bar{display:block;height:4px;border-radius:3px;background:var(--track);overflow:hidden}.bar.wide{height:6px}.bar.thin{height:3px;margin-top:7px;max-width:220px}.bar-fill{display:block;height:100%;border-radius:3px;background:linear-gradient(90deg,var(--accent-deep),var(--accent));box-shadow:0 0 12px var(--accent-glow)}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px}.card{display:flex;flex-direction:column;gap:10px;border-radius:var(--radius);padding:20px 21px 18px;transition:transform .17s cubic-bezier(.2,.7,.3,1),box-shadow .17s,background .17s}.card:hover{transform:translateY(-3px);background:var(--glass-hover);box-shadow:inset 0 1px #ffffff29,var(--shadow-lift),0 0 44px -18px var(--accent-glow)}.card h3{margin:0;font-size:20px;font-weight:650;line-height:1.22;letter-spacing:-.025em}.card p{margin:0;color:var(--muted);font-size:13.5px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.card-source{align-self:flex-start;display:inline-flex;align-items:center;gap:5px;font-size:10px;text-transform:uppercase;letter-spacing:.09em;color:var(--accent);background:var(--accent-soft);border:1px solid rgba(194,247,90,.18);padding:3px 9px;border-radius:999px;font-weight:700}.card-foot{margin-top:auto;padding-top:14px;display:flex;flex-direction:column;gap:9px}.card-meta{display:flex;gap:14px;flex-wrap:wrap;font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}.card-meta span{display:inline-flex;align-items:center;gap:5px}.card.has-cover{padding-top:0;overflow:hidden}.card-cover{display:block;margin:0 -21px 2px;aspect-ratio:16 / 9;overflow:hidden;background:var(--bg-2);border-bottom:1px solid var(--glass-border)}.card-cover img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .22s cubic-bezier(.2,.7,.3,1)}.card.has-cover:hover .card-cover img{transform:scale(1.03)}.card-meta .meta-offline{color:var(--offline-fg)}.card-updated{margin:8px 0 0;font-size:11px;color:var(--faint);letter-spacing:.01em}.course-updated{display:inline-flex;align-items:center;gap:6px;margin:14px 0 0;font-size:12px;color:var(--faint)}.masthead-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end}.sync{position:relative}.sync-btn{display:inline-flex;align-items:center;gap:7px;padding:7px 14px;border-radius:999px;background:var(--accent-soft);border:1px solid rgba(194,247,90,.22);color:var(--accent);font:inherit;font-size:12.5px;font-weight:650;letter-spacing:.02em;cursor:pointer;transition:background .14s ease,border-color .14s ease}.sync-btn:hover:not(:disabled){background:#c2f75a29;border-color:var(--accent)}.sync-btn:disabled{opacity:.8;cursor:default}.sync-btn:disabled .icon{animation:spin 1.6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.sync-panel{position:absolute;top:calc(100% + 8px);right:0;z-index:20;width:300px;max-width:78vw;padding:12px 14px;border-radius:var(--radius-sm);background:var(--bg-2);border:1px solid var(--glass-border-hover);box-shadow:var(--shadow-lift),inset 0 1px 0 var(--glass-highlight);text-align:left}.sync-phase{display:flex;justify-content:space-between;gap:10px;font-size:12.5px;color:var(--text);font-weight:550}.sync-pct{color:var(--accent);font-variant-numeric:tabular-nums}.sync-panel .bar{margin-top:9px}.sync-detail{margin:8px 0 0;font-size:11.5px;color:var(--muted);font-family:var(--mono);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sync-detail.err{color:var(--danger);font-family:var(--sans);white-space:normal}.attach-row{display:flex;align-items:center;gap:8px}.attach-main{flex:1;min-width:0;display:inline-flex;align-items:center;gap:10px;padding:10px 13px;border-radius:var(--radius-sm);background:var(--glass);border:1px solid var(--glass-border);box-shadow:inset 0 1px 0 var(--glass-highlight);color:var(--text);font:inherit;font-size:14px;text-align:left;cursor:pointer;transition:border-color .14s ease,background .14s ease}.attach-main:hover{border-color:var(--glass-border-hover);background:var(--glass-hover)}.attach-main .icon{flex:none;color:var(--accent)}.attach-main span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.attach-dl{flex:none;display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:var(--radius-sm);background:var(--glass);border:1px solid var(--glass-border);color:var(--muted);transition:color .14s ease,border-color .14s ease}.attach-dl:hover{color:var(--accent);border-color:var(--glass-border-hover)}.viewer-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:#030509d1;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;padding:3vh 3vw;animation:fade .15s ease}@keyframes fade{0%{opacity:0}to{opacity:1}}.viewer{display:flex;flex-direction:column;width:min(1000px,96vw);height:min(92vh,1200px);background:var(--bg-2);border:1px solid var(--glass-border-hover);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lift)}.viewer-bar{display:flex;align-items:center;gap:12px;padding:11px 14px;border-bottom:1px solid var(--glass-border);background:var(--glass)}.viewer-name{flex:1;min-width:0;font-size:13.5px;font-weight:550;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.viewer-btn{flex:none;display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:var(--radius-sm);background:none;border:1px solid transparent;color:var(--muted);cursor:pointer;transition:color .14s ease,background .14s ease,border-color .14s ease}.viewer-btn:hover{color:var(--accent);background:var(--glass-hover);border-color:var(--glass-border)}.viewer-body{flex:1;min-height:0;background:#33373f;display:flex}.viewer-body iframe{width:100%;height:100%;border:0}.viewer-body img{max-width:100%;max-height:100%;margin:auto;object-fit:contain}.back{display:inline-flex;align-items:center;gap:5px;margin-bottom:24px;font-size:13px;color:var(--muted);font-weight:500;padding:6px 12px 6px 9px;border-radius:999px;border:1px solid transparent;transition:color .13s,background .13s,border-color .13s}.back:hover{color:var(--text);background:var(--glass);border-color:var(--glass-border)}.course-head{margin-bottom:42px}.course-head h1{margin:12px 0 0;font-size:38px;font-weight:700;letter-spacing:-.035em;line-height:1.12;background:linear-gradient(170deg,#fff 20%,#a8adbd 110%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}.course-progress{display:flex;align-items:center;gap:14px;margin-top:22px;max-width:480px}.course-progress .bar{flex:1}.course-progress-label{font-size:12px;color:var(--muted);white-space:nowrap;font-variant-numeric:tabular-nums}.expand-all{margin-top:18px;background:none;border:none;color:var(--faint);font:inherit;font-size:12px;letter-spacing:.03em;cursor:pointer;padding:4px 0}.expand-all:hover{color:var(--accent)}.modules{display:flex;flex-direction:column;gap:12px}.module{background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--radius);box-shadow:inset 0 1px 0 var(--glass-highlight);-webkit-backdrop-filter:blur(var(--glass-blur));backdrop-filter:blur(var(--glass-blur));overflow:hidden;transition:border-color .15s ease}.module.open{border-color:var(--glass-border-hover)}.module-head{display:flex;align-items:center;gap:12px;width:100%;padding:16px 18px;background:none;border:none;cursor:pointer;color:var(--text);font:inherit;text-align:left;transition:background .13s ease}.module-head:hover{background:var(--glass-hover)}.module-chevron{flex:none;color:var(--faint);transform:rotate(-90deg);transition:transform .18s ease,color .15s ease}.module.open .module-chevron{transform:rotate(0);color:var(--accent)}.module-title{flex:1;font-size:12.5px;font-weight:650;letter-spacing:.07em;text-transform:uppercase;color:var(--text)}.module-meta{flex:none;display:inline-flex;align-items:center;gap:5px;font-size:12px;color:var(--faint);font-variant-numeric:tabular-nums}.module-meta .icon{color:var(--accent)}.lessons{list-style:none;margin:0;padding:4px 10px 10px}.lessons li+li{border-top:1px solid rgba(255,255,255,.055)}.lesson{display:grid;grid-template-columns:30px 1fr auto auto 20px;align-items:center;gap:15px;padding:13px 14px;border-radius:var(--radius-sm);transition:background .13s,box-shadow .13s}.lesson:hover{background:var(--glass);box-shadow:inset 0 1px #ffffff0f}.lesson.done .lesson-title{color:var(--muted)}.lesson-index{font-size:11px;color:var(--faint);font-variant-numeric:tabular-nums;font-family:var(--mono)}.lesson-main{min-width:0}.lesson-title{font-size:15.5px;line-height:1.3;font-weight:550;letter-spacing:-.012em;display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lesson-time{font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap;display:inline-flex;align-items:center;gap:5px}.lesson-check{color:var(--accent);text-align:right;filter:drop-shadow(0 0 6px var(--accent-glow))}.badge{display:inline-flex;align-items:center;gap:5px;font-size:10px;text-transform:uppercase;letter-spacing:.07em;font-weight:700;padding:3.5px 9px;border-radius:999px;white-space:nowrap;border:1px solid transparent}.badge.offline{color:var(--offline-fg);background:var(--offline-bg);border-color:#c2f75a33}.badge.embed{color:var(--embed-fg);background:var(--embed-bg);border-color:#ffd47933}.badge.text{color:var(--text-fg);background:var(--text-bg);border-color:#ffffff14}.player-layout{display:grid;grid-template-columns:244px minmax(0,1fr) 320px;gap:28px;align-items:start}.player-main{min-width:0}.lesson-nav{position:sticky;top:28px;max-height:calc(100vh - 56px);overflow-y:auto;padding-right:4px;display:flex;flex-direction:column;gap:3px}.lesson-nav-course{display:block;font-size:11px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--faint);padding:2px 10px 10px}.nav-section-head{display:flex;align-items:center;gap:8px;width:100%;padding:9px 10px;background:none;border:none;border-radius:var(--radius-sm);cursor:pointer;color:var(--text);font:inherit;text-align:left;transition:background .12s ease}.nav-section-head:hover{background:var(--glass)}.nav-chevron{flex:none;color:var(--faint);transform:rotate(-90deg);transition:transform .18s ease}.nav-section.open .nav-chevron{transform:rotate(0);color:var(--accent)}.nav-section-title{flex:1;font-size:11.5px;font-weight:650;letter-spacing:.05em;text-transform:uppercase;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.nav-dot{flex:none;width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 6px var(--accent-glow)}.nav-lessons{list-style:none;margin:0 0 4px;padding:2px 0 2px 8px}.nav-lesson{display:flex;align-items:center;gap:9px;padding:7px 10px;border-radius:8px;border-left:2px solid transparent;color:var(--muted);font-size:13px;line-height:1.35;transition:background .12s ease,color .12s ease}.nav-lesson:hover{background:var(--glass);color:var(--text)}.nav-lesson.current{background:var(--accent-soft);border-left-color:var(--accent);color:var(--text);font-weight:550}.nav-lesson.done .nav-lesson-title{color:var(--faint)}.nav-lesson-mark{flex:none;width:14px;display:inline-flex;justify-content:center;color:var(--faint)}.nav-lesson.current .nav-lesson-mark,.nav-lesson.done .nav-lesson-mark{color:var(--accent)}.nav-lesson-title{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lesson-steps{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px}.step{display:flex;align-items:center;gap:10px;padding:11px 14px;border-radius:var(--radius-sm);background:var(--glass);border:1px solid var(--glass-border);box-shadow:inset 0 1px 0 var(--glass-highlight);color:var(--text);min-width:0;transition:border-color .14s ease,background .14s ease}.step:hover{border-color:var(--glass-border-hover);background:var(--glass-hover)}.step.next{justify-content:flex-end;text-align:right}.step .icon{flex:none;color:var(--faint)}.step .flip{transform:scaleX(-1)}.step-body{display:flex;flex-direction:column;min-width:0}.step-label{font-size:10.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--faint)}.step-title{font-size:13.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.theater{background:var(--theater);border-radius:var(--radius);overflow:hidden;aspect-ratio:16 / 9;display:flex;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.08);box-shadow:0 30px 80px -20px #000c,0 0 90px -40px var(--accent-glow)}.theater video,.theater iframe{width:100%;height:100%;border:0;display:block}.theater-empty{display:flex;flex-direction:column;align-items:center;gap:16px;color:var(--muted);font-size:14px;text-align:center;padding:26px}.lesson-head{margin:28px 0 0;font-size:30px;font-weight:700;letter-spacing:-.03em;line-height:1.18}.lesson-sub{display:flex;align-items:center;gap:14px;margin-top:12px;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}.lesson-sub>span{display:inline-flex;align-items:center;gap:6px}.lesson-body{margin-top:22px;max-width:68ch;color:#d9dbe2;font-size:15.5px;line-height:1.68;white-space:pre-wrap}.attachments{margin-top:36px}.attachments ul{list-style:none;margin:0;padding:0;display:grid;gap:7px}.attachments a{color:var(--accent);font-size:14px;display:inline-flex;align-items:center;gap:7px}.attachments a:hover{text-decoration:underline}.notes{position:sticky;top:28px}.composer{border-radius:var(--radius);padding:14px;margin-bottom:18px}.composer textarea{width:100%;resize:vertical;border:0;outline:none;background:transparent;color:var(--text);font:inherit;font-size:14px;line-height:1.55}.composer textarea::placeholder{color:var(--faint)}.composer-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:12px;padding-top:12px;border-top:1px solid rgba(255,255,255,.075)}.stamp-live{font-size:12.5px;color:var(--accent);font-variant-numeric:tabular-nums;font-family:var(--mono);text-shadow:0 0 14px var(--accent-glow)}.stamp-input{width:84px;padding:5px 10px;font:inherit;font-size:13px;font-family:var(--mono);font-variant-numeric:tabular-nums;background:#0000004d;color:var(--text);border:1px solid var(--glass-border);border-radius:8px;outline:none}.stamp-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.button{font:inherit;font-size:13px;font-weight:650;letter-spacing:-.005em;padding:7px 15px;border-radius:999px;cursor:pointer;background:linear-gradient(180deg,var(--accent),var(--accent-deep));color:#0b0e07;border:0;box-shadow:0 2px 14px -2px var(--accent-glow);transition:box-shadow .15s,transform .15s,filter .15s}.button:hover:not(:disabled){box-shadow:0 4px 26px -2px var(--accent-glow);transform:translateY(-1px)}.button:active:not(:disabled){transform:translateY(0)}.button:disabled{opacity:.35;cursor:default;box-shadow:none}.hint{margin:10px 0 0;font-size:12px;color:var(--faint);line-height:1.45}.note-list{list-style:none;margin:0;padding:0;display:grid;gap:3px}.note-list li{display:grid;grid-template-columns:auto 1fr auto;gap:11px;align-items:start;padding:11px 11px 11px 9px;border-radius:var(--radius-sm);transition:background .13s}.note-list li:hover{background:var(--glass)}.note-list p{margin:0;font-size:13.5px;line-height:1.55;color:#d5d8e0}.stamp{font:inherit;font-size:12px;font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--accent);background:var(--accent-soft);border:1px solid rgba(194,247,90,.2);border-radius:7px;padding:3px 8px;cursor:pointer;white-space:nowrap;margin-top:1px;transition:box-shadow .13s,background .13s}.stamp:hover{background:#c2f75a2e;box-shadow:0 0 16px -2px var(--accent-glow)}.muted-stamp{color:var(--faint);background:#ffffff0d;border-color:#ffffff14;cursor:default;text-transform:uppercase;letter-spacing:.06em;font-size:9.5px;font-weight:600}.muted-stamp:hover{background:#ffffff0d;box-shadow:none}.note-del{border:0;background:transparent;color:var(--faint);line-height:1;cursor:pointer;padding:2px;opacity:0;transition:opacity .13s,color .13s}.note-list li:hover .note-del{opacity:1}.note-del:hover{color:var(--danger)}.ghost-link{display:none}.connect-bar{display:flex;align-items:center;gap:10px;border-radius:var(--radius);padding:10px 12px;margin-bottom:16px}.connect-bar input{flex:1;min-width:0;padding:8px 12px;font:inherit;font-size:13.5px;font-family:var(--mono);background:#00000052;color:var(--text);border:1px solid var(--glass-border);border-radius:9px;outline:none}.connect-bar input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.conn-status{font-size:11px;text-transform:uppercase;letter-spacing:.07em;font-weight:650;color:var(--faint);white-space:nowrap;padding:0 4px}.conn-status.ok{color:var(--accent);text-shadow:0 0 14px var(--accent-glow)}.screen{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--glass-border);background:#000;aspect-ratio:1280 / 800;box-shadow:0 30px 80px -20px #000c,0 0 90px -40px var(--accent-glow);outline:none}.screen:focus-visible{border-color:var(--accent)}.screen img{display:block;width:100%;height:100%;object-fit:contain;-webkit-user-select:none;user-select:none;-webkit-user-drag:none;cursor:crosshair}.screen-loading{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:13px;letter-spacing:.04em;pointer-events:none}.login-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.login-card{width:100%;max-width:360px;display:flex;flex-direction:column;gap:15px;border-radius:var(--radius);padding:34px 30px}.login-card h1{margin:0;font-size:30px;font-weight:700;letter-spacing:-.03em;display:flex;align-items:center;gap:10px}.login-card h1 .icon{color:var(--accent);filter:drop-shadow(0 0 10px var(--accent-glow))}.login-card .lede{margin:-9px 0 4px;font-size:13.5px}.login-card input{width:100%;padding:11px 14px;font:inherit;font-size:14.5px;background:#0000004d;color:var(--text);border:1px solid var(--glass-border);border-radius:10px;outline:none}.login-card input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.login-card .button{padding:11px;font-size:14px}.login-error{margin:0;font-size:13px;color:var(--danger)}.empty,.error{color:var(--muted);font-size:14px;background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--radius);padding:20px 22px;box-shadow:inset 0 1px 0 var(--glass-highlight)}.empty.small{padding:14px 2px;background:none;border:0;box-shadow:none}.error{border-color:#ff6b5259}code{font-family:var(--mono);font-size:.9em;background:#00000059;padding:2px 6px;border-radius:5px;border:1px solid rgba(255,255,255,.07)}@media (max-width: 1200px){.player-layout{grid-template-columns:208px minmax(0,1fr)}.notes{grid-column:1 / -1;position:static;margin-top:10px}}@media (max-width: 1000px){.player-layout{grid-template-columns:minmax(0,1fr)}.notes{position:static}.player-main{order:1}.notes{order:2}.lesson-nav{position:static;max-height:none;order:3;margin-top:20px}}@media (max-width: 620px){.app{padding:26px 16px 90px}.masthead{align-items:flex-start;gap:22px}.masthead h1{font-size:32px}.totals{gap:22px}.totals dd{font-size:20px}.lesson{grid-template-columns:24px 1fr auto;gap:11px}.lesson .badge,.lesson-check{display:none}.course-head h1{font-size:28px}.lesson-head{font-size:24px}.lesson-steps{grid-template-columns:1fr}}@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))){.glass,.card,.resume,.composer,.login-card{background:var(--bg-2)}}@media (prefers-reduced-motion: reduce){*{transition-duration:.01ms!important;animation-duration:.01ms!important}.card:hover,.resume:hover,.button:hover:not(:disabled){transform:none}}.search-form{display:flex;align-items:center;gap:10px;margin:4px 0 26px;padding:0 16px;height:52px;background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--radius);box-shadow:inset 0 1px 0 var(--glass-highlight),var(--shadow);-webkit-backdrop-filter:blur(var(--glass-blur));backdrop-filter:blur(var(--glass-blur));color:var(--faint);transition:border-color .15s ease}.search-form:focus-within{border-color:var(--glass-border-hover);color:var(--accent)}.search-form input{flex:1;background:none;border:none;outline:none;color:var(--text);font:inherit;font-size:15px}.search-form input::placeholder{color:var(--faint)}.search-form.big{height:60px}.search-form.big input{font-size:17px}.search-count{color:var(--muted);font-size:13px;margin:0 2px 14px}.search-results{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.search-results a{display:block;padding:12px 16px;background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--radius-sm);box-shadow:inset 0 1px 0 var(--glass-highlight);text-decoration:none;color:var(--text);transition:border-color .15s ease,background .15s ease}.search-results a:hover{background:var(--glass-hover);border-color:var(--glass-border-hover)}.sr-top{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px}.sr-top svg{color:var(--faint)}.sr-kind{text-transform:uppercase;font-size:10px;letter-spacing:.06em;font-weight:600;padding:2px 7px;border-radius:999px;color:var(--faint);background:var(--text-bg)}.sr-kind.transcript{color:var(--accent-deep);background:var(--accent-soft)}.sr-kind.note{color:var(--embed-fg);background:var(--embed-bg)}.sr-course{color:var(--muted)}.sr-lesson{color:var(--text);font-weight:500}.sr-time{color:var(--accent);display:inline-flex;align-items:center;gap:4px;margin-left:auto}.sr-snippet{display:block;margin-top:6px;color:var(--muted);font-size:14px;line-height:1.5}.search-results mark,.sr-snippet mark{background:var(--accent-soft);color:var(--accent);border-radius:3px;padding:0 2px}.transcript{margin-top:30px}.transcript .section-head{display:flex;align-items:center;gap:8px}.t-count{margin-left:auto;color:var(--faint);font-size:11px;letter-spacing:normal;text-transform:none}.transcript-scroll{max-height:340px;overflow-y:auto;margin-top:10px;padding:6px;background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--radius-sm);box-shadow:inset 0 1px 0 var(--glass-highlight)}.t-seg{display:flex;gap:12px;width:100%;text-align:left;background:none;border:none;border-radius:8px;padding:7px 10px;color:var(--muted);font:inherit;font-size:14px;line-height:1.5;cursor:pointer;transition:background .12s ease,color .12s ease}.t-seg:hover{background:var(--glass-hover);color:var(--text)}.t-seg .t-time{flex:none;min-width:44px;font-family:var(--mono);font-size:12px;color:var(--faint);padding-top:1px}.t-seg.active{background:var(--accent-soft);color:var(--text)}.t-seg.active .t-time{color:var(--accent)}.t-seg .t-text{flex:1}.lesson-body h3,.lesson-body h4,.lesson-body h5{color:var(--text);margin:18px 0 8px;line-height:1.3}.lesson-body h3{font-size:18px}.lesson-body h4{font-size:16px}.lesson-body h5{font-size:14px}.lesson-body p{margin:0 0 12px}.lesson-body a{color:var(--accent);text-decoration:none;border-bottom:1px solid var(--accent-soft);word-break:break-word}.lesson-body a:hover{border-bottom-color:var(--accent)}.lesson-body ul,.lesson-body ol{margin:0 0 12px;padding-left:22px}.lesson-body li{margin:4px 0}.lesson-body blockquote{margin:0 0 14px;padding:10px 16px;border-left:3px solid var(--accent-deep);background:var(--accent-soft);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text)}.lesson-body blockquote h3,.lesson-body blockquote h4,.lesson-body blockquote h5{margin:0}.lesson-body code{font-family:var(--mono);font-size:.9em;background:var(--text-bg);padding:1px 6px;border-radius:5px}.lesson-body strong{color:var(--text)}.lesson-body .body-img{display:block;max-width:100%;height:auto;margin:14px 0;border-radius:var(--radius-sm);border:1px solid var(--glass-border);cursor:zoom-in;transition:border-color .14s ease,box-shadow .14s ease}.lesson-body .body-img:hover{border-color:var(--glass-border-hover);box-shadow:var(--shadow)}
