/* 15 · One edit, real footage (built on 14 · One edit, many lessons). "Daylight studio": pale cool canvas, floating rounded frames, ambient light in the colour of each video type.
   Plus Jakarta Sans (UI, captions), Fraunces (her name, quiet lines), DM Mono (labels, timecodes). All OFL, bundled. */
@font-face{font-family:"Jakarta";src:url(fonts/plus-jakarta-sans-latin-wght-normal.woff2) format("woff2");font-weight:200 800;font-display:block}
@font-face{font-family:"Fraunces";src:url(fonts/fraunces-latin-full-normal.woff2) format("woff2");font-weight:100 900;font-style:normal;font-display:block}
@font-face{font-family:"Fraunces";src:url(fonts/fraunces-latin-full-italic.woff2) format("woff2");font-weight:100 900;font-style:italic;font-display:block}
@font-face{font-family:"DM Mono";src:url(fonts/dm-mono-latin-400-normal.woff2) format("woff2");font-weight:400;font-display:block}
@font-face{font-family:"DM Mono";src:url(fonts/dm-mono-latin-500-normal.woff2) format("woff2");font-weight:500;font-display:block}
:root{--bg:#EEF0F5;--ink:#14161B;--ink2:#4B5160;--ink3:#8C92A1;--ln:#E1E4EC;--ln2:#D3D7E1;
  --cob:#3B5BFD;--tan:#FF7A1A;--vio:#7B5CFF;--red:#FF2D46;--mint:#16B386;--grn:#2BD980}
*{box-sizing:border-box}
html,body{margin:0;background:#DFE3EA;color:var(--ink);font-family:"Jakarta",system-ui,sans-serif}
body{min-height:100vh;min-height:100dvh}
/* page: the frame fits the viewport width AND height (minus the control bar); the page itself always scrolls normally */
#page{display:flex;flex-direction:column;align-items:center;padding:10px 10px 18px;gap:8px}
#frame{position:relative;width:min(calc(100vw - 20px),calc((100vh - 86px) * 16 / 9));width:min(calc(100vw - 20px),calc((100dvh - 86px) * 16 / 9));
  aspect-ratio:16/9;min-width:280px;overflow:hidden;border-radius:12px;background:var(--bg);box-shadow:0 18px 50px rgba(30,40,70,.22)}
#stage{position:absolute;left:0;top:0;width:1920px;height:1080px;transform-origin:0 0;overflow:hidden;background:var(--bg);
  -webkit-font-smoothing:antialiased;font-kerning:normal;contain:layout paint}
#bar{width:min(calc(100vw - 20px),calc((100vh - 86px) * 16 / 9));width:min(calc(100vw - 20px),calc((100dvh - 86px) * 16 / 9));min-width:280px;
  display:flex;align-items:center;gap:12px;height:44px;padding:0 4px;font:500 13px/1 "DM Mono",monospace;color:var(--ink2)}
#bar a.back{color:var(--ink2);text-decoration:none;white-space:nowrap;font:600 14px "Jakarta",sans-serif;padding:8px 2px}
#bar a.back:hover{color:var(--ink)}
#bar button{flex:none;width:40px;height:40px;border-radius:50%;border:1px solid var(--ln2);background:#fff;color:var(--ink);cursor:pointer;display:grid;place-items:center;padding:0}
#bar button:hover{border-color:var(--cob)}
#bar button svg{display:block}
#scrub{flex:1;min-width:60px;accent-color:var(--cob);height:28px;cursor:pointer}
#time{white-space:nowrap;min-width:92px;text-align:right}
#about{max-width:900px;margin:6px 12px 0;color:var(--ink3);font-size:13px;line-height:1.5;text-align:center}
#bigplay{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:5;display:flex;align-items:center;gap:12px;cursor:pointer;
  padding:15px 26px 15px 20px;border-radius:999px;border:0;background:rgba(20,22,27,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  color:#fff;font:600 16px/1 "Jakarta",sans-serif;letter-spacing:.01em;box-shadow:0 12px 40px rgba(20,30,60,.35);transition:transform .2s,background .2s}
#bigplay:hover{transform:translate(-50%,-50%) scale(1.04);background:rgba(20,22,27,.95)}
#bigplay .tri{width:0;height:0;border-left:13px solid #fff;border-top:8px solid transparent;border-bottom:8px solid transparent}
#bigplay.hide{display:none}
@media (max-width:560px){#bar{gap:8px}#bar .lbl{display:none}#time{min-width:0;font-size:12px}#bigplay{padding:10px 16px 10px 14px;font-size:14px}}
/* screenshot mode (?paused / ?shot): the stage fills the window exactly, no chrome */
html.shot,html.shot body{overflow:hidden;background:var(--bg)}
html.shot #page{padding:0}
html.shot #frame{width:100vw;border-radius:0;box-shadow:none}
html.shot #bar,html.shot #about,html.shot #bigplay{display:none}

/* ---------- stage ---------- */
.abs{position:absolute;left:0;top:0}
.mono{font-family:"DM Mono",monospace}
svg{overflow:visible}
#amb{position:absolute;inset:0;background:linear-gradient(180deg,#F3F5F9,#E8EBF2)}
#amb i{position:absolute;left:0;top:0;width:1400px;height:1400px;margin:-700px 0 0 -700px;border-radius:50%;opacity:.55}
#grain{position:absolute;inset:-40px;pointer-events:none;opacity:.05;mix-blend-mode:multiply;z-index:50}
#pgroup,#pcircle{position:absolute;inset:0}
#pBg,#pFg{position:absolute;left:0;top:0;transform-origin:0 0;pointer-events:none;opacity:0}
#world{position:absolute;left:0;top:0;width:1920px;height:1080px;transform-origin:0 0;backface-visibility:hidden}
#world .glare{position:absolute;inset:0;pointer-events:none;opacity:0;z-index:40;
  background:linear-gradient(115deg,rgba(255,255,255,.22) 0%,rgba(255,255,255,.04) 38%,rgba(255,255,255,0) 60%),linear-gradient(0deg,rgba(10,20,40,.12),rgba(10,20,40,0) 30%),linear-gradient(rgba(38,44,70,.10),rgba(38,44,70,.10))}

/* Part 1 frame */
#fw{position:absolute;left:0;top:0;width:1536px;height:864px;border-radius:26px;overflow:hidden;background:#fff;transform-origin:0 0;
  box-shadow:0 1px 0 rgba(255,255,255,.8) inset,0 0 0 1px rgba(20,30,60,.06),0 40px 90px -30px rgba(30,40,80,.35),0 14px 30px -18px rgba(30,40,80,.25)}
.scene{position:absolute;left:0;top:0;width:1536px;height:864px;overflow:hidden}
.scene .cam{position:absolute;left:0;top:0;width:1536px;height:864px;transform-origin:0 0}
.card{position:absolute;left:0;top:0;width:1536px;height:864px;border-radius:26px;overflow:hidden;background:#fff;transform-origin:0 0;
  box-shadow:0 0 0 1px rgba(20,30,60,.06),0 40px 90px -30px rgba(30,40,80,.35)}
.sweep{position:absolute;top:-10%;bottom:-10%;width:420px;left:0;background:linear-gradient(100deg,rgba(255,255,255,0),rgba(255,255,255,.55),rgba(255,255,255,0));pointer-events:none;z-index:30;opacity:0}
.cat{position:absolute;left:0;top:938px;width:1920px;display:flex;justify-content:center;align-items:center;gap:18px;white-space:nowrap}
.cat .nm{font:600 30px/1 "Jakarta",sans-serif;letter-spacing:-.01em;color:var(--ink)}
.cat .dot{width:12px;height:12px;border-radius:50%}
.cat .tag{display:flex;align-items:center;gap:9px;padding:9px 15px 9px 12px;border-radius:999px;font:500 17px/1 "DM Mono",monospace;letter-spacing:.02em}
.rowlab{position:absolute;top:0;width:384px;text-align:center;font:600 21px/1 "Jakarta",sans-serif;color:var(--ink);display:flex;justify-content:center;align-items:center;gap:10px}
.rowlab i{width:9px;height:9px;border-radius:50%}
#hi{position:absolute;left:0;top:250px;width:1920px;text-align:center;font:italic 400 46px/1 "Fraunces",serif;color:var(--ink);letter-spacing:-.005em}
#hi span{display:inline-block}

/* scene 1: course player */
.s1{background:#fff}
.s1 .sb{position:absolute;left:0;top:0;width:392px;height:864px;background:#F7F8FB;border-right:1px solid var(--ln);padding:34px 26px}
.s1 .brand{display:flex;align-items:center;gap:12px;font:700 21px/1 "Jakarta",sans-serif}
.s1 .brand b{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,#6A82FF,#3B5BFD);display:grid;place-items:center}
.s1 .prog{margin-top:30px;font:500 14px/1 "Jakarta";color:var(--ink3);display:flex;justify-content:space-between}
.s1 .pbar{margin-top:10px;height:6px;border-radius:3px;background:#E3E7F2;overflow:hidden}
.s1 .pbar i{display:block;height:100%;width:38%;background:var(--cob);border-radius:3px}
.s1 .mod{margin:34px 0 12px;font:500 13px/1 "DM Mono",monospace;letter-spacing:.1em;text-transform:uppercase;color:var(--ink3)}
.s1 .ls{position:relative;display:flex;align-items:center;gap:14px;height:58px;padding:0 14px;border-radius:14px;font:500 17px/1.2 "Jakarta";color:var(--ink2)}
.s1 .ls .n{width:28px;height:28px;border-radius:50%;border:1.5px solid var(--ln2);display:grid;place-items:center;font:500 13px/1 "DM Mono";color:var(--ink3);flex:none}
.s1 .ls.done .n{background:var(--cob);border-color:var(--cob)}
.s1 .ls.on{background:rgba(59,91,253,.09);color:var(--ink);font-weight:600}
.s1 .ls.on .n{border-color:var(--cob);color:var(--cob)}
.s1 .ls .eq{margin-left:auto;display:flex;gap:3px;align-items:flex-end;height:16px}
.s1 .ls .eq i{width:3px;background:var(--cob);border-radius:2px;height:8px}
.s1 .ls.dim{opacity:.55}
.s1 .hd{position:absolute;left:420px;top:14px;display:flex;align-items:center;gap:14px}
.chipc{padding:8px 12px;border-radius:999px;background:rgba(59,91,253,.1);color:var(--cob);font:500 14px/1 "DM Mono",monospace;letter-spacing:.02em}
.s1 .hd .tt{font:600 20px/1 "Jakarta";color:var(--ink)}
.s1 .vid{position:absolute;left:420px;top:58px;width:1080px;height:720px;border-radius:16px;overflow:hidden;
  background:radial-gradient(120% 90% at 50% 40%,#353A44,#1D2027 70%)}
.s1 .cap{position:absolute;left:416px;width:1096px;top:622px;text-align:center}
.s1 .cap span.box{display:inline-block;padding:9px 16px 10px;border-radius:10px;background:rgba(12,14,18,.62);font:500 23px/1.3 "Jakarta";color:#fff;white-space:nowrap}
.s1 .cap span.box b{font-weight:500;display:inline-block}
.s1 .below{position:absolute;left:420px;top:796px;width:1080px}
.s1 .tbar{position:relative;height:6px;border-radius:3px;background:#E3E7F2}
.s1 .tbar i{position:absolute;left:0;top:0;bottom:0;width:36%;border-radius:3px;background:var(--cob)}
.s1 .tbar u{position:absolute;top:-3px;width:2px;height:12px;background:#fff}
.s1 .tbar em{position:absolute;top:50%;width:16px;height:16px;margin:-8px 0 0 -8px;border-radius:50%;background:#fff;box-shadow:0 0 0 2px var(--cob),0 2px 6px rgba(0,0,0,.2)}
.s1 .row2{display:flex;align-items:center;margin-top:18px;font:500 16px/1 "Jakarta";color:var(--ink2);gap:10px}
.s1 .row2 .time{font:500 15px/1 "DM Mono";color:var(--ink3);margin-right:auto}
.s1 .btn{padding:11px 16px;border-radius:12px;border:1px solid var(--ln2);font:600 15px/1 "Jakarta";color:var(--ink)}
.s1 .btn.pri{background:var(--ink);color:#fff;border-color:var(--ink)}

/* scene 2: training video */
.s2{background:#0B1330}
.s2 .ovl{position:absolute;inset:0;pointer-events:none}
.pillD{position:absolute;display:flex;align-items:center;gap:10px;padding:10px 16px;border-radius:999px;background:rgba(8,12,30,.55);backdrop-filter:blur(6px);color:#fff;font:600 17px/1 "Jakarta";white-space:nowrap}
.pillD .mono{font-size:15px;font-weight:500;color:rgba(255,255,255,.7)}
.rep{position:absolute;right:28px;top:26px;display:flex;align-items:center;gap:10px}
.rep .r1{display:flex;align-items:center;gap:9px;padding:10px 14px;border-radius:10px;background:var(--tan);color:#fff;font:500 16px/1 "DM Mono";letter-spacing:.08em}
.rep .r1 i{width:9px;height:9px;border-radius:50%;background:#fff}
.rep .r2{padding:10px 14px;border-radius:10px;background:rgba(8,12,30,.6);color:#fff;font:500 17px/1 "DM Mono";min-width:78px;text-align:center}
.brk{position:absolute;width:30px;height:30px;border-color:#fff;border-style:solid;opacity:0}
.s2 .sbar{position:absolute;left:28px;right:28px;bottom:26px;height:5px;border-radius:3px;background:rgba(255,255,255,.2)}
.s2 .sbar i{position:absolute;left:0;top:0;bottom:0;border-radius:3px;background:var(--tan)}
.s2 .sbar b{position:absolute;top:-4px;height:13px;border-radius:3px;background:rgba(255,122,26,.35);border:1px solid rgba(255,122,26,.8)}

/* scene 3: tutorial */
.s3{background:#F4F1EC}
.s3 .cam{background:none}
.s3 .h1{position:absolute;left:64px;top:52px;font:700 30px/1 "Jakarta";letter-spacing:-.01em}
.s3 .h2{position:absolute;left:64px;top:98px;font:500 17px/1 "Jakarta";color:var(--ink3)}
.chipv{position:absolute;right:56px;top:50px;padding:9px 14px;border-radius:999px;background:rgba(123,92,255,.12);color:var(--vio);font:500 15px/1 "DM Mono"}
.s3 .steps{position:absolute;left:64px;top:220px;width:380px}
.s3 .st{display:flex;align-items:center;gap:16px;height:76px;font:600 21px/1 "Jakarta";color:var(--ink2)}
.s3 .st .c{position:relative;width:40px;height:40px;border-radius:50%;border:2px solid #D8D1F7;display:grid;place-items:center;font:500 16px/1 "DM Mono";color:var(--vio);background:#fff;flex:none}
.s3 .st .c .f{position:absolute;inset:-2px;border-radius:50%;background:var(--vio);display:grid;place-items:center;transform:scale(0)}
.s3 .st small{display:block;margin-top:6px;font:500 15px/1 "Jakarta";color:var(--ink3)}
.s3 .word{position:absolute;left:600px;width:660px;top:262px;height:100px;text-align:center;font:700 76px/100px "Jakarta";letter-spacing:-.015em;color:var(--ink);white-space:nowrap}
.s3 .word .sy{display:inline-block;position:relative}
.s3 .word .sy .pl{position:absolute;left:-14px;right:-14px;top:6px;bottom:4px;border-radius:22px;background:var(--vio);transform:scale(0);z-index:-1}
.s3 .word .dt{display:inline-block;width:0;text-align:center;color:#C4B8FF;overflow:visible}
.s3 .word .mk{position:absolute;left:50%;top:-44px;margin-left:-6px;width:12px;height:28px;border-radius:6px;background:var(--vio);opacity:0}
.s3 .ipa{position:absolute;left:600px;width:660px;top:392px;text-align:center;font:400 26px/1 "DM Mono";color:var(--ink3);white-space:nowrap}
.s3 .ipa b{font-weight:400;border-radius:6px;padding:2px 4px}

/* scene 4: youtube */
.s4{background:#fff}
.s4 .vid{position:absolute;left:48px;top:40px;width:1072px;height:603px;border-radius:16px;overflow:hidden;background:#fff;box-shadow:0 0 0 1px rgba(20,30,60,.08)}
.s4 .ttl{position:absolute;left:48px;top:666px;font:700 26px/1.2 "Jakarta";letter-spacing:-.01em;color:#0F0F0F}
.s4 .ch{position:absolute;left:48px;top:716px;width:1072px;display:flex;align-items:center;gap:14px}
.s4 .ch .av{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#2BD980,#14946A);display:grid;place-items:center;color:#fff;font:700 20px "Jakarta"}
.s4 .ch .nm{font:700 18px/1.25 "Jakarta"}
.s4 .ch .nm small{display:block;font:500 14px/1.3 "Jakarta";color:#606060}
.s4 .ch .sub{margin-left:18px;padding:12px 18px;border-radius:999px;background:#0F0F0F;color:#fff;font:600 15px/1 "Jakarta"}
.s4 .ch .lk{margin-left:auto;padding:12px 18px;border-radius:999px;background:#F2F2F2;font:600 15px/1 "Jakarta";color:#0F0F0F}
.s4 .nx{position:absolute;left:1152px;top:40px;width:352px}
.s4 .nx .it{display:flex;gap:12px;margin-bottom:16px}
.s4 .nx .th{width:168px;height:94px;border-radius:10px;flex:none;position:relative;overflow:hidden}
.s4 .nx .tx{font:600 15px/1.3 "Jakarta";color:#0F0F0F}
.s4 .nx .tx small{display:block;margin-top:6px;font:500 13px/1.3 "Jakarta";color:#606060}
.s4 .ctr{position:absolute;left:44px;top:40px;color:#fff}
.s4 .ctr .v{font:600 50px/1 "DM Mono";letter-spacing:-.02em}
.s4 .ctr .l{margin-top:12px;font:500 18px/1 "Jakarta";color:rgba(255,255,255,.6)}
.s4 .yb{position:absolute;left:0;right:0;bottom:0;height:64px;background:linear-gradient(rgba(0,0,0,0),rgba(0,0,0,.55))}
.s4 .yb .pb{position:absolute;left:20px;right:20px;bottom:40px;height:4px;background:rgba(255,255,255,.3)}
.s4 .yb .pb i{position:absolute;left:0;top:0;bottom:0;background:var(--red)}
.s4 .yb .pb em{position:absolute;top:50%;width:14px;height:14px;margin:-7px 0 0 -7px;border-radius:50%;background:var(--red)}
.s4 .yb .tm{position:absolute;left:24px;bottom:12px;font:500 14px/1 "DM Mono";color:#fff}
.broll{position:absolute;inset:0}
.tagD{position:absolute;padding:8px 12px;border-radius:8px;background:rgba(0,0,0,.45);color:#fff;font:500 14px/1 "DM Mono";letter-spacing:.06em}

/* editor (Part 2) */
#edBg{position:absolute;inset:0;background:#F3F4F8;opacity:0}
.edTop{position:absolute;left:0;top:0;width:1920px;height:64px;background:#fff;border-bottom:1px solid var(--ln);display:flex;align-items:center;padding:0 28px;gap:16px;font:600 17px/1 "Jakarta"}
.edTop .dots{display:flex;gap:8px}.edTop .dots i{width:12px;height:12px;border-radius:50%;background:#DADDE5}
.edTop .logo{width:28px;height:28px;border-radius:8px;background:conic-gradient(from 45deg,var(--cob),var(--vio),var(--red),var(--tan),var(--cob))}
.edTop .sub{color:var(--ink3);font-weight:500}
.edTop .vers{display:flex;gap:8px;margin-left:6px}
.vchip{padding:6px 10px;border-radius:8px;background:#F0F2F7;color:var(--ink2);font:500 14px/1 "DM Mono";display:flex;align-items:center;gap:6px}
.vchip.fin{background:rgba(22,179,134,.12);color:var(--mint)}
.edTop .tabs{position:absolute;left:50%;transform:translateX(-50%);display:flex;gap:30px;font:600 15px/1 "Jakarta";color:var(--ink3)}
.edTop .tabs .on{color:var(--ink);position:relative}
.edTop .tabs .on:after{content:"";position:absolute;left:0;right:0;bottom:-24px;height:2px;background:var(--cob)}
.edTop .share{margin-left:auto;padding:11px 18px;border-radius:10px;background:var(--ink);color:#fff;font:600 15px/1 "Jakarta"}
.panel{position:absolute;background:#fff;border-radius:18px;box-shadow:0 0 0 1px rgba(20,30,60,.06),0 20px 50px -30px rgba(30,40,80,.3)}
#prev{position:absolute;left:40px;top:88px;width:1168px;height:657px;border-radius:16px;overflow:hidden;background:#0E1A33;
  box-shadow:0 0 0 1px rgba(20,30,60,.08),0 30px 60px -30px rgba(30,40,80,.4)}
#prev .les{position:absolute;left:0;top:0;width:1920px;height:1080px;transform-origin:0 0}
.lcap{position:absolute;left:0;width:1920px;text-align:center;bottom:64px}
.lcap .bx{position:relative;display:inline-block;max-width:1380px;padding:14px 30px 16px;font-family:"Jakarta";line-height:1.22;text-shadow:0 1px 2px rgba(0,0,0,.25)}
.lcap .bx .bg{position:absolute;inset:0;border-radius:18px;background:rgba(16,18,24,.84);z-index:-1}
.lcap .bx span{display:inline-block}
.trk{position:absolute;left:120px;top:300px;width:660px;height:430px;border-radius:30px;background:rgba(255,255,255,.94);box-shadow:0 30px 60px -30px rgba(20,40,30,.45);padding:40px 44px}
.trk h5{margin:0;font:700 34px/1 "Jakarta";color:#14161B}
.trk p{margin:12px 0 30px;font:500 22px/1 "Jakarta";color:#7A8290}
.trk .wk{display:flex;align-items:center;height:70px;gap:14px}
.trk .wk .l{width:110px;font:600 23px/1 "Jakarta";color:#4B5160}
.trk .wk .d{width:40px;height:40px;border-radius:50%;background:#EEF1F0;position:relative}
.trk .wk .d i{position:absolute;inset:0;border-radius:50%;background:#26A384;transform:scale(0)}
.trk .wk .n{margin-left:auto;font:500 26px/1 "DM Mono";color:#14161B;min-width:56px;text-align:right}
.streak{position:absolute;right:36px;top:36px;display:flex;align-items:center;gap:8px;padding:10px 16px;border-radius:999px;background:#FFF1E4;color:#E0660F;font:700 20px/1 "Jakarta"}
.numchip{position:absolute;padding:6px 14px;border-radius:12px;background:#FFD84D;color:#14161B;font:700 44px/1 "Jakarta";z-index:5;white-space:nowrap}
.appr{position:absolute;right:26px;top:24px;display:flex;align-items:center;gap:10px;padding:12px 18px 12px 14px;border-radius:999px;background:var(--mint);color:#fff;font:700 19px/1 "Jakarta";box-shadow:0 10px 24px -8px rgba(22,179,134,.6)}
/* timeline */
#tl{left:40px;top:770px;width:1168px;height:282px;overflow:hidden}
#tl .tc{position:absolute;left:24px;top:18px;font:500 17px/1 "DM Mono";color:var(--ink)}
#tl .tn{position:absolute;right:24px;top:18px;font:500 14px/1 "DM Mono";color:var(--ink3)}
#tl .ruler{position:absolute;left:120px;right:20px;top:50px;height:20px;font:500 12px/1 "DM Mono";color:var(--ink3);border-bottom:1px solid var(--ln)}
#tl .ruler span{position:absolute;top:0}
#tl .lh{position:absolute;left:24px;font:500 13px/1 "DM Mono";color:var(--ink3)}
#tl .lane{position:absolute;left:120px;right:20px;border-radius:8px;background:#F5F6FA;overflow:hidden}
#tl .clips{position:absolute;left:0;top:0;bottom:0;width:2000px}
#tl .blk{position:absolute;top:4px;bottom:4px;border-radius:7px;overflow:hidden;font:600 13px/1 "Jakarta";color:#fff;padding:8px 10px;white-space:nowrap}
#tl .blk.v{background:linear-gradient(#6F9C88,#4E7E6B)}
#tl .blk.v.b{background:linear-gradient(#8D86C9,#6D64B0)}
#tl .blk.c{background:#fff;box-shadow:inset 0 0 0 1.5px #C9CFDD;color:var(--ink2);font-weight:500;padding:6px 9px;font-size:12px}
#tl .wave{position:absolute;left:0;top:0;bottom:0}
#tl .wave i{position:absolute;width:3px;border-radius:2px;background:#6B8BFF}
.mark{position:absolute;border-radius:8px;border:2px solid var(--cob);background:repeating-linear-gradient(135deg,rgba(59,91,253,.16) 0 7px,rgba(59,91,253,.05) 7px 14px);z-index:6}
.mark .tg{position:absolute;left:8px;top:-1px;transform:translateY(-100%);margin-top:-6px;white-space:nowrap;padding:6px 9px;border-radius:7px;background:var(--cob);color:#fff;font:500 13px/1 "DM Mono"}
.blade{position:absolute;width:2px;margin-left:-1px;background:var(--cob);box-shadow:0 0 12px 2px rgba(59,91,253,.7);z-index:7}
#tl .ph{position:absolute;top:44px;width:2px;height:238px;margin-left:-1px;background:var(--red);z-index:8}
#tl .ph:before{content:"";position:absolute;left:-7px;top:0;width:16px;height:14px;border-radius:3px 3px 8px 8px;background:var(--red)}
.delta{position:absolute;padding:6px 10px;border-radius:8px;background:var(--ink);color:#fff;font:500 15px/1 "DM Mono";z-index:9}
/* chat */
#chat{left:1232px;top:88px;width:648px;height:964px;overflow:hidden}
#chat .hd{position:absolute;left:0;top:0;right:0;height:84px;border-bottom:1px solid var(--ln);display:flex;align-items:center;gap:14px;padding:0 24px}
.av{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;font:700 17px/1 "Jakarta";color:#fff;flex:none;position:relative}
#chat .hd .nm{font:700 18px/1.2 "Jakarta"}
#chat .hd .nm small{display:flex;align-items:center;gap:6px;font:500 14px/1.3 "Jakarta";color:var(--ink3)}
#chat .hd .nm small i{width:8px;height:8px;border-radius:50%;background:var(--mint)}
#chat .hd .ap{margin-left:auto;display:flex;align-items:center;gap:8px;padding:9px 14px 9px 11px;border-radius:999px;background:rgba(22,179,134,.12);color:var(--mint);font:700 15px/1 "Jakarta";opacity:0}
#chat .feed{position:absolute;left:0;right:0;top:84px;bottom:86px;overflow:hidden}
#chat .ft{position:absolute;left:20px;right:20px;bottom:18px;height:54px;border-radius:14px;background:#F3F4F8;display:flex;align-items:center;padding:0 10px 0 18px;font:500 16px "Jakarta";color:var(--ink3)}
#chat .ft b{margin-left:auto;width:36px;height:36px;border-radius:10px;background:var(--cob);display:grid;place-items:center}
.msg{position:absolute;left:24px;right:24px;display:flex;flex-direction:column}
.msg .b{max-width:440px;padding:15px 19px;border-radius:20px;font:500 20px/1.35 "Jakarta";transform-origin:0 100%}
.msg.c .b{align-self:flex-start;background:#EEF0F5;color:var(--ink);border-bottom-left-radius:6px}
.msg.m .b{align-self:flex-end;background:var(--cob);color:#fff;border-bottom-right-radius:6px;transform-origin:100% 100%}
.msg .meta{margin-top:7px;font:500 13px/1 "DM Mono";color:var(--ink3)}
.msg.m .meta{align-self:flex-end}
.msg.sys{align-items:center}
.msg.sys .b{background:rgba(22,179,134,.12);color:var(--mint);font-weight:700;display:flex;align-items:center;gap:10px;border-radius:999px;padding:12px 18px;transform-origin:50% 50%}
.msg .att{display:flex;align-items:center;gap:10px;margin-top:10px;padding:10px 12px;border-radius:12px;background:#fff;font:500 15px/1 "DM Mono";color:var(--ink2)}
.msg.old{opacity:.6}
.typing .b{display:flex;gap:6px;padding:18px 20px}
.typing .b i{width:9px;height:9px;border-radius:50%;background:#A5ABB9}
#links{position:absolute;left:0;top:0;width:1920px;height:1080px;pointer-events:none;z-index:30}
.focus{position:absolute;border-radius:14px;border:3px solid var(--cob);box-shadow:0 0 0 6px rgba(59,91,253,.15);opacity:0;z-index:20;pointer-events:none}

/* Part 3 subtitle + Part 4 end card */
#sub{position:absolute;left:0;top:918px;width:1920px;text-align:center;font:500 29px/1.3 "Jakarta";color:var(--ink2);white-space:nowrap}
#sub .ln{position:absolute;left:0;right:0;top:0}
#sub span{display:inline-block;opacity:0}
#endc{position:absolute;inset:0;pointer-events:none}
#endc .nm{position:absolute;left:0;width:1920px;top:512px;text-align:center;font:400 92px/1 "Fraunces",serif;letter-spacing:-.02em;color:var(--ink)}
#endc .nm span{display:inline-block}
#endc .role{position:absolute;left:0;width:1920px;top:632px;text-align:center;font:500 29px/1 "Jakarta";color:var(--ink2)}
#endc .labs{position:absolute;left:0;width:1920px;top:706px;display:flex;justify-content:center;gap:14px}
#endc .lb{display:flex;align-items:center;gap:10px;padding:12px 18px 12px 15px;border-radius:999px;background:rgba(255,255,255,.75);box-shadow:0 0 0 1px rgba(20,30,60,.07);font:600 19px/1 "Jakarta";color:var(--ink)}
#endc .lb i{width:10px;height:10px;border-radius:50%}
#endc .contact{position:absolute;left:0;width:1920px;top:800px;text-align:center;font:500 22px/1 "DM Mono";color:var(--ink2)}
#endc .made{position:absolute;left:0;width:1920px;top:984px;text-align:center;font:500 16px/1 "DM Mono";letter-spacing:.06em;color:var(--ink3)}
#ring{position:absolute;left:0;top:0;pointer-events:none}

/* 15: footage, embedded experiments, lesson overlays */
video.fv{position:absolute;left:0;top:0;display:block;object-fit:fill;transform-origin:0 0;background:#0B1330}
.s1 .row2 .cc{padding:5px 8px;border-radius:6px;border:1.5px solid var(--ln2);font:600 12px/1 "Jakarta";color:var(--ink2);margin-right:14px}
#tl .zm{position:absolute;left:0;top:0;height:12px;border-radius:6px 6px 3px 3px;background:var(--vio);transform-origin:0 50%;display:flex;align-items:center;justify-content:space-between;z-index:3;opacity:0}
#tl .zm i{width:9px;height:9px;margin:0 -3px;transform:rotate(45deg);background:#fff;border:2px solid var(--vio);border-radius:2px}
#tl .zm span{display:flex;align-items:center;gap:5px;font:600 10px/1 "Jakarta";color:#fff;letter-spacing:.02em;white-space:nowrap}
.cueL{position:absolute;left:770px;top:262px;padding:14px 22px;border-radius:16px;background:#FFD84D;color:#14161B;font:800 38px/1 "Jakarta";letter-spacing:-.01em;white-space:nowrap;opacity:0;box-shadow:0 12px 30px -10px rgba(0,0,0,.45)}