@font-face{font-family:'Inter';font-style:normal;font-weight:100 900;font-display:swap;src:url('/fonts/inter.woff2') format('woff2')}
  @font-face{font-family:'Space Grotesk';font-style:normal;font-weight:300 700;font-display:swap;src:url('/fonts/space-grotesk.woff2') format('woff2')}
  /* metric-matched fallbacks: the system font is sized to the web font so the swap causes ~0 layout shift (CLS) */
  @font-face{font-family:'Inter Fallback';src:local('Helvetica Neue'),local('Arial');ascent-override:90%;descent-override:22.43%;line-gap-override:0%;size-adjust:107.4%}
  @font-face{font-family:'Grotesk Fallback';src:local('Helvetica Neue'),local('Arial');ascent-override:95.6%;descent-override:28.7%;line-gap-override:0%;size-adjust:99.9%}
  :root{
    --bg:#0c0b09; --bg-2:#12100b; --surface:#17150f; --surface-2:#211e16;
    --line:rgba(255,248,220,.08); --line-2:rgba(255,248,220,.14);
    --ink:#f1ece1; --soft:#cdc7bb; --muted:#9c9385;
    --gold:#f6c111; --gold-deep:#d9a800; --gold-ink:#1a1407;
    --gold-soft:rgba(246,193,17,.13); --gold-line:rgba(246,193,17,.34);
    --green:#34d399; --green-soft:rgba(52,211,153,.14);
    --blue:#7cc4ff; --blue-soft:rgba(124,196,255,.12);
    --red:#f4796f; --red-soft:rgba(244,121,111,.13);
    --shadow:0 24px 60px -18px rgba(0,0,0,.7);
    --display:'Space Grotesk','Grotesk Fallback',-apple-system,BlinkMacSystemFont,system-ui,sans-serif;
    --text:'Inter','Inter Fallback',-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{font-family:var(--text);background:var(--bg);color:var(--ink);line-height:1.6;
    -webkit-font-smoothing:antialiased;
    background-image:radial-gradient(900px 380px at 88% -8%,rgba(246,193,17,.10),transparent 60%),
                     radial-gradient(700px 340px at -5% 3%,rgba(246,193,17,.05),transparent 55%);
    background-attachment:fixed}
  a{color:inherit;text-decoration:none}
  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
  :focus-visible{outline:2.5px solid var(--gold);outline-offset:3px;border-radius:8px}
  .wrap{max-width:900px;margin:0 auto;padding:0 clamp(16px,4vw,40px)}

  /* in-lesson reading progress */
  .read{position:fixed;top:0;left:0;height:3px;width:0;z-index:60;
    background:linear-gradient(90deg,var(--gold),var(--gold-deep));box-shadow:0 0 14px rgba(246,193,17,.6)}

  /* nav */
  .nav{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;
    padding:14px clamp(16px,4vw,40px);background:rgba(12,11,9,.74);backdrop-filter:saturate(160%) blur(14px);
    border-bottom:1px solid var(--line)}
  .brand{display:flex;align-items:center;gap:10px;color:var(--ink)}
  .brand-mark{width:34px;height:34px;border-radius:50%;object-fit:cover;flex:none}
  .brandmark{font-family:var(--display);font-weight:600;font-size:14px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink)}
  .brandmark span{color:var(--gold)}
  .nav-back{font-size:13px;font-weight:600;color:var(--soft);border:1px solid var(--line-2);border-radius:999px;padding:8px 15px;transition:.15s}
  .nav-back:hover{border-color:var(--gold-line);color:var(--ink)}

  /* hero */
  .hero{padding:clamp(40px,6vw,72px) 0 clamp(28px,4vw,40px);position:relative}
  .eyebrow{display:inline-flex;align-items:center;gap:7px;font-family:var(--display);font-size:12px;font-weight:600;
    letter-spacing:.16em;text-transform:uppercase;color:var(--gold);border:1px solid var(--gold-line);
    border-radius:999px;padding:6px 14px;margin-bottom:18px}
  .hero h1{font-family:var(--display);font-size:clamp(30px,5.2vw,52px);line-height:1.04;font-weight:700;letter-spacing:-.025em}
  .hero h1 em{color:var(--gold);font-style:normal}
  .hero p{max-width:600px;margin:16px 0 0;color:var(--soft);font-size:clamp(15px,2vw,18px)}
  .hero-cta{display:inline-flex;align-items:center;gap:9px;margin-top:24px;font-family:var(--display);font-weight:600;
    font-size:15px;color:var(--gold-ink);background:linear-gradient(150deg,var(--gold),var(--gold-deep));border-radius:999px;
    padding:13px 24px;box-shadow:0 12px 30px -8px rgba(246,193,17,.5);transition:transform .14s}
  .hero-cta:hover{transform:translateY(-1px)}
  .tagrow{display:flex;align-items:center;gap:8px}
  .starthere{font-family:var(--display);font-size:10px;font-weight:600;letter-spacing:.07em;text-transform:uppercase;
    color:var(--gold-ink);background:var(--gold);border-radius:999px;padding:3px 9px}
  .continue-bar{display:none}
  @media(max-width:920px){
    .has-sticky{padding-bottom:92px}
    .continue-bar{display:block;position:fixed;left:0;right:0;bottom:0;z-index:40;padding:12px clamp(16px,4vw,40px);
      background:linear-gradient(0deg,var(--bg) 55%,rgba(12,11,9,0));backdrop-filter:blur(6px)}
    .continue-bar .btn{width:100%;justify-content:center}
  }

  .section{padding:clamp(8px,2vw,16px) 0 clamp(40px,6vw,64px)}
  .sec-h{font-family:var(--display);font-size:13px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:4px}

  /* library cards */
  .clist{display:grid;gap:18px;grid-template-columns:1fr;margin-top:8px}
  @media(min-width:720px){.clist{grid-template-columns:1fr 1fr}}
  .ccard{background:linear-gradient(165deg,var(--surface-2),var(--surface));border:1px solid var(--line);
    border-radius:22px;padding:24px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:11px;
    color:inherit;position:relative;overflow:hidden;transition:transform .16s,border-color .16s}
  .ccard::after{content:"";position:absolute;inset:0;background:radial-gradient(360px 150px at 100% 0,var(--gold-soft),transparent 70%);opacity:0;transition:opacity .25s;pointer-events:none}
  .ccard:hover{transform:translateY(-3px);border-color:var(--gold-line)}
  .ccard:hover::after{opacity:1}
  .ccard .top{display:flex;align-items:flex-start;justify-content:space-between;gap:14px}
  .ccard .ctag{font-family:var(--display);font-size:11.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--gold)}
  .ccard h2.ct-title{font-family:var(--display);font-size:21px;font-weight:700;letter-spacing:-.01em;margin-top:7px}
  .ccard p{font-size:14.5px;color:var(--soft);flex:1}
  .ccard .cprereq{font-size:12.5px;color:var(--muted)}
  .ccard .cmeta{display:flex;align-items:center;gap:12px;margin-top:4px}
  .ccard .cprog{font-size:13px;font-weight:600;color:var(--soft)}
  .ccard .go{margin-top:6px;align-self:flex-start;font-family:var(--display);font-weight:600;font-size:14px;
    color:var(--gold-ink);background:linear-gradient(150deg,var(--gold),var(--gold-deep));border-radius:999px;padding:11px 20px;
    box-shadow:0 10px 26px -8px rgba(246,193,17,.5)}
  .ccard.caution{background:linear-gradient(165deg,#241d10,#16130c);border-color:var(--gold-line)}
  .ccard.caution .go{background:transparent;color:var(--gold);border:1.5px solid var(--gold-line);box-shadow:none}

  /* progress arc motif */
  .arc{position:relative;flex:none}
  .arc svg{transform:rotate(-90deg)}
  .arc .arc-fill{transition:stroke-dashoffset .8s cubic-bezier(.2,.8,.2,1)}
  .arc .arc-lbl{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;font-family:var(--display);font-weight:700;font-size:15px;color:var(--ink);line-height:1;text-align:center}
  .arc .arc-num{line-height:1}
  .arc .arc-lbl small{display:block;font-family:var(--text);font-weight:500;font-size:9px;color:var(--muted);letter-spacing:.03em;line-height:1;margin-top:0}

  /* progress strip (course landing) */
  .pcard{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:18px 22px;margin-top:16px;
    display:flex;flex-wrap:wrap;align-items:center;gap:16px 22px}
  .pcard .ptext{flex:1;min-width:200px}
  .pcard .ptext b{font-family:var(--display);font-size:16px;font-weight:600}
  .pbar{height:9px;background:var(--bg-2);border:1px solid var(--line);border-radius:999px;overflow:hidden;margin-top:10px}
  .pfill{height:100%;width:0;background:linear-gradient(90deg,var(--gold),var(--gold-deep));border-radius:999px;transition:width .6s ease}
  .pcta{display:flex;gap:10px;flex-wrap:wrap}

  /* module + lessons */
  .module{margin-top:30px}
  .module-head{display:flex;align-items:baseline;gap:12px;margin-bottom:14px}
  .module-head .mnum{font-family:var(--display);font-size:12px;font-weight:600;color:var(--gold);background:var(--gold-soft);
    border:1px solid var(--gold-line);border-radius:999px;padding:4px 12px;white-space:nowrap}
  .module-head h2{font-family:var(--display);font-size:19px;font-weight:700}
  .module-head .mtag{font-size:13.5px;color:var(--muted)}
  .lrow{display:flex;align-items:center;gap:15px;background:var(--surface);border:1px solid var(--line);
    border-radius:15px;padding:15px 17px;margin-bottom:10px;color:inherit;transition:transform .12s,border-color .16s}
  .lrow:hover{transform:translateY(-2px);border-color:var(--gold-line)}
  .lnum{flex:none;width:38px;height:38px;border-radius:11px;background:var(--surface-2);border:1px solid var(--line);
    display:grid;place-items:center;font-family:var(--display);font-weight:700;font-size:15px;color:var(--muted)}
  .lrow.done .lnum{background:var(--green-soft);border-color:transparent;color:var(--green)}
  .lbody{flex:1;min-width:0}
  .lbody .lt{display:block;font-family:var(--display);font-weight:600;font-size:16px}
  .lbody .lo{display:block;font-size:13px;color:var(--muted);margin-top:5px;line-height:1.45}
  .ldot{flex:none;font-size:13px;font-weight:600;color:var(--muted)}
  .lrow.done .ldot{color:var(--green)}

  /* lesson shell + sticky TOC */
  .shell{max-width:1140px;margin:0 auto;padding:0 clamp(16px,4vw,40px);display:grid;grid-template-columns:248px 1fr;gap:40px;align-items:start}
  @media(max-width:920px){.shell{grid-template-columns:1fr;gap:0}}
  .toc{position:sticky;top:86px;padding:26px 0 40px}
  @media(max-width:920px){.toc{display:none}}
  .toc .ct{font-family:var(--display);font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:14px}
  .toc a{display:flex;gap:11px;align-items:center;padding:8px 11px;border-radius:10px;font-size:13.5px;color:var(--soft);margin-bottom:2px;transition:.12s}
  .toc a:hover{background:var(--surface)}
  .toc a .n{width:23px;height:23px;border-radius:7px;display:grid;place-items:center;font-size:11.5px;font-weight:700;
    background:var(--surface-2);border:1px solid var(--line);color:var(--muted);flex:none;font-family:var(--display)}
  .toc a.done .n{background:var(--green-soft);border-color:transparent;color:var(--green)}
  .toc a.active{background:var(--surface);color:var(--ink)}
  .toc a.active .n{background:var(--gold);border-color:transparent;color:var(--gold-ink)}
  .main{padding:26px 0 64px;min-width:0}

  .crumbs{font-size:13px;color:var(--muted);margin-bottom:16px}
  .crumbs a{color:var(--soft);font-weight:500} .crumbs .sep{opacity:.5;margin:0 7px}
  .lhead{display:flex;gap:20px;align-items:flex-start;justify-content:space-between}
  .lhead h1{font-family:var(--display);font-size:clamp(26px,4vw,40px);line-height:1.08;letter-spacing:-.02em;font-weight:700}
  .obj{margin-top:16px;display:flex;gap:11px;align-items:flex-start;background:var(--gold-soft);border:1px solid var(--gold-line);
    border-radius:14px;padding:13px 16px;font-size:14.5px;color:#f2e6c4}
  .obj b{color:var(--gold)}

  .media{margin:26px 0;border-radius:20px;border:1px solid var(--line);overflow:hidden;position:relative;
    background:linear-gradient(160deg,#1a1812,#0d0c0a);aspect-ratio:16/8;display:grid;place-items:center;text-align:center}
  .media::before{content:"";position:absolute;inset:0;background:radial-gradient(420px 200px at 50% 0,rgba(246,193,17,.12),transparent 70%)}
  .media .play{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;position:relative;
    background:linear-gradient(150deg,var(--gold),var(--gold-deep));color:var(--gold-ink);box-shadow:0 14px 34px rgba(246,193,17,.34)}
  .media .play svg{width:22px;height:22px;margin-left:3px}
  .media .cap{position:relative;margin-top:14px;font-family:var(--display);font-weight:600;font-size:15px}
  .media .sub{position:relative;color:var(--muted);font-size:13px;margin-top:4px;max-width:360px}
  .media .tag{position:absolute;top:14px;left:14px;font-family:var(--display);font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
    color:var(--gold);background:rgba(0,0,0,.4);border:1px solid var(--gold-line);border-radius:999px;padding:5px 11px}

  .companion{font-size:16.5px;line-height:1.72;color:var(--soft);max-width:68ch}
  .companion p{margin:0 0 16px} .companion strong{color:var(--ink);font-weight:600}
  .companion ul,.companion ol{margin:0 0 16px 22px} .companion li{margin:7px 0}

  /* comparison tables */
  .cmp-wrap{margin:22px 0;border:1px solid var(--line);border-radius:16px;overflow:auto;background:var(--surface);-webkit-overflow-scrolling:touch}
  table.cmp{border-collapse:collapse;width:100%;min-width:600px;font-size:13.5px}
  .cmp th{font-family:var(--display);text-align:left;font-weight:600;font-size:12px;letter-spacing:.03em;color:var(--gold);
    background:var(--bg-2);padding:13px 14px;border-bottom:1px solid var(--gold-line)}
  .cmp td{padding:13px 14px;border-top:1px solid var(--line);color:var(--soft);vertical-align:top}
  .cmp tbody tr:hover{background:var(--surface-2)}
  .cmp td:first-child{color:var(--ink);font-weight:600}
  .cmp th:first-child,.cmp td:first-child{position:sticky;left:0;z-index:1}
  .cmp th:first-child{background:var(--bg-2)}
  .cmp td:first-child{background:var(--surface);box-shadow:1px 0 0 var(--line)}
  .cmp tbody tr:hover td:first-child{background:var(--surface-2)}
  .cmp strong{color:var(--ink);font-weight:700}

  .callout{margin:22px 0;border-radius:16px;padding:17px 19px;background:linear-gradient(160deg,var(--gold-soft),transparent);border:1px solid var(--gold-line)}
  .callout .ct{font-family:var(--display);font-size:11.5px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--gold);margin-bottom:6px}
  .callout p{margin:0;font-size:15.5px;color:#f0e7cd;font-weight:500}
  .callout strong{color:#fff}

  .disc{margin:14px 0;border-radius:14px;padding:14px 17px;font-size:13.8px;line-height:1.6;border:1px solid var(--line);background:var(--surface)}
  .disc .k{font-family:var(--display);font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;margin-bottom:6px}
  .disc .b{color:var(--soft)}
  .disc.disc-croa{background:linear-gradient(160deg,var(--gold-soft),transparent);border-color:var(--gold-line)} .disc.disc-croa .k{color:var(--gold)}
  .disc.disc-product{background:linear-gradient(160deg,var(--blue-soft),transparent);border-color:rgba(124,196,255,.28)} .disc.disc-product .k{color:var(--blue)}
  .disc.disc-score{background:linear-gradient(160deg,var(--green-soft),transparent);border-color:rgba(52,211,153,.26)} .disc.disc-score .k{color:var(--green)}
  .disc.disc-nodispute{background:linear-gradient(160deg,var(--red-soft),transparent);border-color:rgba(244,121,111,.3)} .disc.disc-nodispute .k{color:var(--red)}

  .refbox{margin:18px 0;padding:16px 18px;background:var(--surface);border:1px solid var(--line);border-radius:14px}
  .refbox .rt{font-family:var(--display);font-size:12px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
  .refbox .rd{font-size:14px;color:var(--soft);margin-bottom:12px}
  .refbtns{display:flex;gap:9px;flex-wrap:wrap}
  .gbtn{display:inline-flex;align-items:center;gap:7px;font-weight:600;font-size:13.5px;background:var(--surface-2);color:var(--ink);
    border:1px solid var(--line-2);border-radius:999px;padding:9px 15px;transition:.14s}
  .gbtn:hover{border-color:var(--gold-line)}

  /* quiz */
  .quiz{margin:30px 0 8px}
  .quiz .qh{font-family:var(--display);font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--gold);margin-bottom:14px}
  .qitem{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:18px;margin-bottom:14px}
  .qitem .qq{font-family:var(--display);font-weight:600;font-size:16px;margin-bottom:13px}
  .opts{display:flex;flex-direction:column;gap:9px}
  .opt{text-align:left;cursor:pointer;background:var(--surface-2);border:1.5px solid var(--line);border-radius:12px;
    padding:13px 15px;font-size:14.5px;font-weight:500;color:var(--ink);font-family:var(--text);transition:.14s}
  .opt:hover{border-color:var(--gold-line)}
  .opt.correct{border-color:var(--green);background:var(--green-soft)}
  .opt.wrong{border-color:var(--red);background:var(--red-soft)}
  .opt:disabled{cursor:default}
  .qfb{display:none;margin-top:11px;font-size:13.8px;line-height:1.55;padding:12px 14px;border-radius:11px;background:var(--bg-2);border:1px solid var(--line);color:var(--soft)}
  .qfb.show{display:block}

  /* lesson nav */
  .lnav{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;margin:34px 0 6px;padding-top:22px;border-top:1px solid var(--line)}
  .btn{font-family:var(--display);font-weight:600;border-radius:999px;cursor:pointer;border:0;display:inline-flex;align-items:center;gap:9px;text-decoration:none;transition:transform .14s,border-color .15s}
  .btn:hover{transform:translateY(-1px)}
  .btn-gold{background:linear-gradient(150deg,var(--gold),var(--gold-deep));color:var(--gold-ink);padding:14px 24px;font-size:15px;box-shadow:0 12px 30px -8px rgba(246,193,17,.5)}
  .btn-ghost{background:transparent;color:var(--soft);border:1.5px solid var(--line-2);padding:12px 18px;font-size:14px}
  .btn-ghost:hover{color:var(--ink);border-color:var(--gold-line)}
  .btn-dark{background:var(--surface-2);color:var(--ink);border:1px solid var(--line-2);padding:12px 18px;font-size:14px}
  .done-flag{display:none;align-items:center;gap:7px;color:var(--green);font-weight:600;font-size:14px}
  .done-flag.show{display:inline-flex}

  /* caution area */
  .risk-badge{display:inline-block;font-family:var(--display);font-size:10.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;
    padding:5px 11px;border-radius:999px;background:var(--red-soft);color:var(--red);border:1px solid rgba(244,121,111,.34);white-space:nowrap}
  .ack{background:linear-gradient(160deg,#241d10,#15120b);border:1px solid var(--gold-line);border-radius:18px;padding:22px 24px;margin-top:8px}
  .ack h2{font-family:var(--display);font-size:19px;font-weight:700;margin-bottom:9px}
  .ack p{font-size:14.5px;color:#e9dcb6;margin-bottom:14px;max-width:60ch}
  .ctopic{background:var(--surface);border:1px solid var(--line);border-radius:15px;padding:16px 18px;margin-bottom:11px;
    display:flex;align-items:center;justify-content:space-between;gap:14px;color:inherit;transition:.15s}
  .ctopic:hover{border-color:var(--gold-line);transform:translateY(-2px)}
  .ctopic .ctt{font-family:var(--display);font-weight:600;font-size:15.5px}
  .ctbody{font-size:16.5px;line-height:1.72;color:var(--soft);max-width:68ch}
  .ctbody p{margin:0 0 16px} .ctbody strong{color:var(--ink);font-weight:600}

  /* certificate */
  .cert{max-width:720px;margin:8px auto;background:linear-gradient(165deg,var(--surface-2),var(--surface));
    border:1px solid var(--gold-line);border-radius:22px;padding:clamp(28px,5vw,52px);text-align:center;box-shadow:var(--shadow);position:relative;overflow:hidden}
  .cert::before{content:"";position:absolute;inset:0;background:radial-gradient(500px 200px at 50% -10%,var(--gold-soft),transparent 70%);pointer-events:none}
  .cert .seal{position:relative;color:var(--gold)} .cert .seal svg{width:50px;height:50px}
  .cert h1{font-family:var(--display);font-size:clamp(23px,4vw,34px);font-weight:700;letter-spacing:-.01em;margin:10px 0 4px;position:relative}
  .cert .sub{color:var(--muted);font-size:14px;position:relative}
  .cert .name{font-family:var(--display);font-size:clamp(24px,5vw,34px);font-weight:700;color:var(--ink);border-bottom:2px solid var(--gold-line);
    display:inline-block;min-width:240px;padding:8px 18px;margin:22px 0 6px;position:relative}
  .cert .meta{font-size:13.5px;color:var(--muted);margin-top:10px;position:relative}
  .cert .actions{position:relative;margin-top:24px;display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
  .cert input{border-radius:11px;min-width:220px;background:var(--bg-2);border:1px solid var(--line-2);color:var(--ink);padding:11px 15px;font-family:var(--text);font-size:14px}
  .locked{max-width:560px;margin:0 auto;text-align:center;color:var(--soft)}
  .locked h1{font-family:var(--display);font-size:24px;margin-bottom:8px}
  @media print{.nav,.read,.no-print,footer.site{display:none!important}body{background:#fff;color:#111;background-image:none}
    .cert{box-shadow:none;border-color:#caa400;background:#fff;color:#111}.cert h1,.cert .name{color:#111}.cert::before{display:none}}

  footer.site{border-top:1px solid var(--line);margin-top:30px;padding:34px 0 30px}
  footer.site .fbrand{display:flex;align-items:center;gap:9px;justify-content:center}
  footer.site .brand-mark{width:28px;height:28px}
  footer.site .disc-foot{max-width:780px;margin:16px auto 0;text-align:center;font-size:12.5px;color:var(--muted);line-height:1.7}
  footer.site .foot-bottom{text-align:center;margin-top:14px;font-size:12px;color:#73737e}
  footer.site a{color:var(--soft)}

  /* warm-return banner (library home) */
  .returnbar{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
    background:linear-gradient(160deg,var(--gold-soft),transparent);border:1px solid var(--gold-line);
    border-radius:16px;padding:15px 18px;margin-bottom:18px}
  .returnbar .rb-text{font-size:14.5px;color:#f0e7cd;flex:1;min-width:220px}
  .returnbar .rb-text b{color:var(--ink);font-weight:600}
  .returnbar .rb-cta{display:flex;align-items:center;gap:8px}
  .rb-x{background:transparent;border:0;color:var(--muted);font-size:15px;cursor:pointer;padding:6px;line-height:1}
  .rb-x:hover{color:var(--ink)}

  /* "who this is for" line (course landing) */
  .who{font-size:13.5px;color:var(--muted);margin:2px 0 6px}
  /* "why this module matters" line (course landing) */
  .mwhy{font-size:13.5px;color:var(--soft);margin:-2px 0 12px;max-width:64ch}

  /* per-lesson read-time estimate */
  .lmin{display:inline-block;font-size:12px;color:var(--muted);margin-top:6px}
  .lhead .lmin{margin:10px 0 0}

  /* module / halfway / course-complete celebration overlay (lesson player) */
  .celeb{position:fixed;inset:0;z-index:80;display:none;align-items:center;justify-content:center;
    padding:24px;background:rgba(8,7,5,.74);backdrop-filter:blur(4px)}
  .celeb.show{display:flex}
  .celeb-card{max-width:440px;width:100%;text-align:center;box-shadow:var(--shadow);
    background:linear-gradient(165deg,var(--surface-2),var(--surface));border:1px solid var(--gold-line);
    border-radius:22px;padding:34px 30px;animation:celebin .28s ease-out}
  @keyframes celebin{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
  .celeb-burst{width:52px;height:52px;margin:0 auto 14px;border-radius:50%;display:grid;place-items:center;
    background:var(--gold-soft);border:1px solid var(--gold-line);color:var(--gold);font-size:24px}
  .celeb-card p{font-size:16px;line-height:1.6;color:var(--soft);margin-bottom:22px}
  .celeb-card .btn{margin:0 auto}

  @media (prefers-reduced-motion:reduce){*{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}}