/* ==========================================================================
   Public catalogue + course detail page
   Shares the landing page's language: soft canvas, white panels, big radii.
   ========================================================================== */
:root{
  --bg:#EBEBEA; --panel:#FFFFFF; --panel-2:#F6F6F4;
  --ink:#151515; --ink-2:#5B5B58; --faint:#9A9A96; --line:#EAEAE7;
  --black:#141414;
  --brand:#7C3AED; --brand-2:#EC4899;
  --grad:#7C3AED;
  --green:#22C55E; --gold:#F5A623;
  --sh-sm:0 2px 10px rgba(20,20,20,.05);
  --sh:0 20px 50px rgba(20,20,20,.07);
  --sh-lg:0 30px 70px rgba(20,20,20,.10);
  --r-panel:38px; --r-card:24px; --r-sm:16px;
  --font:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
}
/* the hidden attribute must beat any display rule below */
[hidden]{display:none!important}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--ink);line-height:1.55;
  -webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
svg{width:18px;height:18px;flex:none;vertical-align:-.16em}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.03em;line-height:1.12}
.page{max-width:1240px;margin:0 auto;padding:18px}
:focus-visible{outline:3px solid rgba(124,58,237,.4);outline-offset:2px;border-radius:10px}

/* ---------- shared bits reused from the landing page ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:15px;
  padding:13px 22px;border-radius:999px;border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s,color .18s}
.btn-dark{background:var(--black);color:#fff;box-shadow:0 6px 18px rgba(20,20,20,.18)}
.btn-dark:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(20,20,20,.28)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:#fff;transform:translateY(-2px);box-shadow:var(--sh-sm)}
.btn-white{background:#fff;color:var(--ink);box-shadow:0 6px 18px rgba(0,0,0,.14)}
.btn-white:hover{transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:14px}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-panel);box-shadow:var(--sh)}
.pill{display:inline-flex;align-items:center;gap:8px;background:var(--panel);border:1px solid var(--line);
  color:var(--ink-2);font-weight:600;font-size:12px;letter-spacing:.06em;text-transform:uppercase;
  padding:8px 14px;border-radius:999px;box-shadow:var(--sh-sm)}
.stars{display:inline-flex;gap:2px;color:var(--gold)}
.stars svg{width:16px;height:16px}

/* ---------- nav ---------- */
.nav{position:sticky;top:18px;z-index:100;margin-bottom:22px}
.nav-in{background:rgba(255,255,255,.84);backdrop-filter:blur(14px);border:1px solid var(--line);
  border-radius:999px;box-shadow:var(--sh-sm);display:flex;align-items:center;justify-content:space-between;
  padding:11px 12px 11px 22px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:-.02em}
.logo .mark{width:46px;height:46px;border-radius:11px;background:#fff;display:grid;place-items:center;
  overflow:hidden;flex:none;box-shadow:0 4px 14px rgba(20,20,20,.12)}
.logo .mark img{width:100%;height:100%;object-fit:contain}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{color:var(--ink-2);font-weight:500;font-size:15px}
.nav-links a:hover,.nav-links a.on{color:var(--ink)}
.nav-r{display:flex;align-items:center;gap:10px}
.menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:9px;cursor:pointer}

/* ---------- catalogue ---------- */
.cat-head{padding:46px 48px 40px;margin-bottom:22px;text-align:center}
.cat-head h1{font-size:clamp(34px,4.6vw,54px);font-weight:900;margin:18px 0 14px}
.cat-head p{font-size:18px;color:var(--ink-2);max-width:620px;margin:0 auto}
.cat-stats{display:flex;justify-content:center;gap:34px;margin-top:26px;flex-wrap:wrap}
.cat-stats b{display:block;font-size:26px;font-weight:900;letter-spacing:-.03em}
.cat-stats span{font-size:13.5px;color:var(--faint)}

.filters-bar{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:16px 18px;
  margin-bottom:22px;display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.f-search{flex:1;min-width:230px;position:relative}
.f-search svg{position:absolute;left:15px;top:50%;transform:translateY(-50%);color:var(--faint)}
.f-search input{width:100%;padding:12px 16px 12px 44px;border:1px solid var(--line);border-radius:999px;
  font-family:inherit;font-size:15px;background:var(--panel-2)}
.f-search input:focus{outline:none;border-color:var(--brand);background:#fff}
.f-select{padding:11px 34px 11px 15px;border:1px solid var(--line);border-radius:999px;background:#fff;
  font-family:inherit;font-size:14.5px;font-weight:500;appearance:none;cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%239A9A96' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 13px center;background-size:16px}

.type-tabs{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:22px}
.type-tab{display:inline-flex;align-items:center;gap:8px;padding:10px 17px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:14.5px;font-weight:600;color:var(--ink-2);
  transition:transform .16s,box-shadow .16s,border-color .16s}
.type-tab:hover{transform:translateY(-2px);box-shadow:var(--sh-sm)}
.type-tab.on{background:var(--black);border-color:var(--black);color:#fff}
.type-tab .n{font-size:12px;opacity:.65;font-weight:700}

.chip-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:26px}
.chip-row a{padding:7px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:13.5px;font-weight:600;color:var(--ink-2)}
.chip-row a.on{background:var(--grad);border-color:transparent;color:#fff}

.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}
.ccrd{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}
.ccrd:hover{transform:translateY(-5px);box-shadow:var(--sh)}
.ccrd .top{position:relative;aspect-ratio:16/9;overflow:hidden}
.ccrd .top img{width:100%;height:100%;object-fit:cover;display:block;
  transition:transform .4s cubic-bezier(.2,.9,.3,1)}
.ccrd:hover .top img{transform:scale(1.05)}
.buy .art img{width:100%;height:100%;object-fit:cover;display:block}
.ccrd .top .ccrd .kind{position:absolute;top:13px;left:13px;background:rgba(255,255,255,.94);color:#1a1a2e;
  font-size:10px;font-weight:800;letter-spacing:.07em;text-transform:uppercase;padding:5px 10px;border-radius:7px}
.ccrd .rate{position:absolute;top:13px;right:13px;background:rgba(255,255,255,.94);color:#B45309;
  font-size:12.5px;font-weight:800;padding:5px 10px;border-radius:999px}
.ccrd .bd{padding:18px 20px 20px;flex:1;display:flex;flex-direction:column}
.ccrd h3{font-size:18px;font-weight:800;line-height:1.28;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ccrd .sub{font-size:14px;color:var(--ink-2);line-height:1.5;margin-bottom:14px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ccrd .meta{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--faint);
  font-weight:500;margin-bottom:14px}
.ccrd .meta i{width:3px;height:3px;border-radius:50%;background:currentColor;display:inline-block}
.ccrd .tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.ccrd .tags span{background:var(--panel-2);border:1px solid var(--line);border-radius:9px;
  padding:5px 9px;font-size:12px;font-weight:600}
.ccrd .foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;
  padding-top:14px;border-top:1px solid var(--line)}
.ccrd .price{font-size:21px;font-weight:900;letter-spacing:-.03em}
.ccrd .price s{font-size:13.5px;font-weight:600;color:var(--faint);margin-left:6px}

.empty-state{background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);
  padding:70px 30px;text-align:center}
.empty-state h3{font-size:20px;margin-bottom:8px}
.empty-state p{color:var(--ink-2);max-width:420px;margin:0 auto 20px}

/* ---------- course detail ---------- */
.cd-hero{padding:44px 48px;margin-bottom:22px}
.cd-grid{display:grid;grid-template-columns:minmax(0,1.5fr) 380px;gap:44px;align-items:start}
.cd-crumb{font-size:13.5px;color:var(--faint);margin-bottom:16px}
.cd-crumb a:hover{color:var(--ink)}
.cd-hero h1{font-size:clamp(30px,4vw,46px);font-weight:900;margin:14px 0 16px}
.cd-lede{font-size:18px;color:var(--ink-2);line-height:1.6;margin-bottom:22px}
.cd-facts{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:14.5px;color:var(--ink-2);
  margin-bottom:24px}
.cd-facts b{color:var(--ink)}
.cd-facts i{width:3px;height:3px;border-radius:50%;background:var(--faint);display:inline-block}
.cd-badges{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:22px}
.cd-badge{display:inline-flex;align-items:center;gap:7px;background:var(--panel-2);border:1px solid var(--line);
  border-radius:999px;padding:8px 14px;font-size:13.5px;font-weight:600}


/* content sections */
.cd-sec{padding:38px 48px;margin-bottom:22px}
.cd-sec h2{font-size:clamp(24px,3vw,32px);margin-bottom:8px}
.cd-sec .sec-sub{color:var(--ink-2);font-size:16px;margin-bottom:26px}
.learn-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:14px 30px}
.learn-grid li{list-style:none;display:flex;gap:11px;align-items:flex-start;font-size:15.5px;line-height:1.55}
.learn-grid li svg{color:var(--green);margin-top:3px}

.curr{border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden}
.curr details{border-bottom:1px solid var(--line)}
.curr details:last-child{border-bottom:none}
.curr summary{display:flex;align-items:center;gap:12px;padding:16px 20px;cursor:pointer;list-style:none;
  background:var(--panel-2);font-weight:700;font-size:15.5px}
.curr summary::-webkit-details-marker{display:none}
.curr summary .cnt{margin-left:auto;font-size:13px;color:var(--faint);font-weight:600}
.curr summary .ch{transition:transform .2s}
.curr details[open] > summary .ch{transform:rotate(180deg)}
.curr .it{display:flex;align-items:center;gap:12px;padding:13px 20px 13px 52px;font-size:15px;
  color:var(--ink-2);border-top:1px solid var(--line)}
.curr .it .dur{margin-left:auto;font-size:13px;color:var(--faint)}
.curr .it .free{background:#EDE9FE;color:#5B21B6;font-size:11px;font-weight:800;padding:3px 8px;border-radius:5px}

/* reviews */
.rev-summary{display:grid;grid-template-columns:200px minmax(0,1fr);gap:36px;align-items:center;
  padding:26px;background:var(--panel-2);border-radius:var(--r-sm);margin-bottom:28px}
.rev-big{text-align:center}
.rev-big b{display:block;font-size:52px;font-weight:900;letter-spacing:-.04em;line-height:1}
.rev-big span{font-size:13.5px;color:var(--faint)}
.rev-bars{display:grid;gap:8px}
.rev-bar{display:flex;align-items:center;gap:12px;font-size:13.5px;color:var(--ink-2)}
.rev-bar .n{width:44px;flex:none}
.rev-bar .track{flex:1;height:8px;border-radius:5px;background:#E4E4E0;overflow:hidden}
.rev-bar .track span{display:block;height:100%;background:var(--gold)}
.rev-bar .c{width:36px;text-align:right;flex:none;color:var(--faint)}

.rev-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(310px,1fr));gap:18px}
.rev{background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);padding:22px}
.rev.feat{border-color:#7C3AED;box-shadow:var(--sh)}
.rev-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.rev-av{width:44px;height:44px;border-radius:50%;flex:none;display:grid;place-items:center;
  background:var(--grad);color:#fff;font-weight:700;font-size:15px}
.rev-who b{display:block;font-size:15px;font-weight:700}
.rev-who span{font-size:13px;color:var(--faint)}
.rev h4{font-size:16px;font-weight:800;margin:10px 0 7px}
.rev p{font-size:14.5px;line-height:1.62;color:var(--ink-2)}
.rev .when{font-size:12.5px;color:var(--faint);margin-top:12px}

.faq details{border:1px solid var(--line);border-radius:var(--r-sm);margin-bottom:10px;background:#fff}
.faq summary{padding:17px 20px;cursor:pointer;font-weight:700;font-size:16px;display:flex;
  align-items:center;gap:12px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary .ch{margin-left:auto;transition:transform .2s}
.faq details[open] > summary .ch{transform:rotate(180deg)}
.faq .a{padding:0 20px 18px;color:var(--ink-2);font-size:15px;line-height:1.65}

.cd-cta{padding:52px 48px;text-align:center;background:var(--black);color:#fff;
  border-radius:var(--r-panel);margin-bottom:22px}
.cd-cta h2{font-size:clamp(26px,3.4vw,38px);margin-bottom:12px}
.cd-cta p{color:rgba(255,255,255,.74);font-size:17px;max-width:520px;margin:0 auto 26px}

.mini-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}

@media(max-width:980px){
  .cd-grid{grid-template-columns:1fr}
  .buy{position:static}
  .rev-summary{grid-template-columns:1fr;gap:22px}
}
@media(max-width:840px){
  .nav-links{display:none}
  .menu-btn{display:inline-flex}
  .cat-head,.cd-hero,.cd-sec,.cd-cta{padding-left:24px;padding-right:24px}
  .cat-grid{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important}
  /* decorative animation stops; the review columns are content, so they keep
     drifting, just slower and at a constant speed */
  *:not([data-rail-track]):not(.uq-track){animation:none!important}
  .uq-track{animation-duration:80s!important;animation-timing-function:linear!important}
}

/* ---------- share row ---------- */
.share-row{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-top:20px}
.share-lbl{font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--faint);
  margin-right:2px}
.sh{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line);
  background:#fff;color:var(--ink-2);cursor:pointer;transition:transform .16s,box-shadow .16s,background .16s,color .16s}
.sh:hover{transform:translateY(-2px);box-shadow:var(--sh-sm);color:#fff}
.sh svg{width:17px;height:17px}
.sh.wa:hover{background:#25D366;border-color:#25D366}
.sh.tg:hover{background:#229ED9;border-color:#229ED9}
.sh.li:hover{background:#0A66C2;border-color:#0A66C2}
.sh.xx:hover{background:#000;border-color:#000}
.sh.fb:hover{background:#1877F2;border-color:#1877F2}
.sh.em:hover{background:#5B5B58;border-color:#5B5B58}
.sh.cp:hover,.sh.nat:hover{background:var(--brand);border-color:var(--brand)}
.share-done{font-size:13px;font-weight:600;color:var(--green)}
.ver{color:var(--green);font-weight:600}

/* ---------- free preview ---------- */
.try-free{display:flex;align-items:flex-start;gap:11px;background:#F4F3FF;border:1px solid #DCD9FB;
  border-radius:var(--r-sm);padding:14px 16px;margin-bottom:22px;font-size:14.5px;color:var(--ink-2);
  line-height:1.55}
.try-free svg{color:var(--brand);margin-top:2px}
.try-free em{font-style:normal;font-weight:700;color:var(--brand);font-size:11px;letter-spacing:.05em}
.curr .it{width:100%;text-align:left;font-family:inherit}
button.it{background:none;border:none;cursor:pointer;border-top:1px solid var(--line)}
button.it-free:hover{background:#F7F5FF}
button.it-free .play{margin-left:8px;width:26px;height:26px;border-radius:50%;background:var(--brand);
  color:#fff;display:grid;place-items:center;flex:none}
button.it-free .play svg{width:12px;height:12px}
.curr .it .lock{margin-left:auto;color:var(--faint)}
.curr .it .lock svg{width:15px;height:15px}
.curr .it .dur+.lock{margin-left:8px}

.pv{position:fixed;inset:0;background:rgba(20,20,20,.72);backdrop-filter:blur(3px);z-index:400;
  display:flex;align-items:center;justify-content:center;padding:24px}
.pv[hidden]{display:none}
.pv-box{background:#fff;border-radius:20px;width:100%;max-width:880px;max-height:92vh;overflow:hidden;
  display:flex;flex-direction:column;box-shadow:0 40px 90px rgba(0,0,0,.4)}
.pv-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 20px;
  border-bottom:1px solid var(--line)}
.pv-head b{font-size:16.5px;font-weight:800;letter-spacing:-.02em;min-width:0;overflow:hidden;
  text-overflow:ellipsis;white-space:nowrap}
.pv-x{width:34px;height:34px;border:none;background:var(--panel-2);border-radius:50%;font-size:22px;
  line-height:1;cursor:pointer;color:var(--ink-2);flex:none}
.pv-x:hover{background:#E8E8E4}
.pv-body{flex:1;overflow-y:auto;background:#0E0E12;display:grid;place-items:center;min-height:220px}
.pv-body video{width:100%;max-height:70vh;display:block;background:#000}
.pv-body img{max-width:100%;max-height:70vh;object-fit:contain}
.pv-body iframe{width:100%;height:70vh;border:none;background:#fff}
.pv-body audio{padding:40px 24px}
.pv-text{background:#fff;color:var(--ink);padding:28px 30px;line-height:1.75;font-size:15.5px;width:100%;
  max-height:70vh;overflow-y:auto}
.pv-load{color:#B9B9C4;font-size:15px;padding:60px 24px;text-align:center}
.pv-alt{background:#fff;width:100%;padding:12px 18px;font-size:14px}
.pv-alt a{color:var(--brand);font-weight:600}
.pv-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 20px;
  border-top:1px solid var(--line);font-size:14px;color:var(--ink-2);flex-wrap:wrap}
@media(max-width:640px){
  .pv{padding:0}
  .pv-box{border-radius:0;max-height:100vh;height:100vh}
}



/* ---------- carousels on the course page ---------- */
.cd-sec .rail{margin-top:22px}
.cd-sec .rail-nav{display:flex;align-items:center;justify-content:flex-end;gap:12px;margin-bottom:16px}
.cd-sec .rail-arrows{display:flex;gap:9px}
.cd-sec .rail-dots{display:flex;align-items:center;gap:7px;margin-right:auto}
.cd-sec .rail-btn{width:38px;height:38px;border-radius:50%;border:1px solid var(--line);
  background:#fff;display:grid;place-items:center;cursor:pointer;color:var(--ink);flex:none;
  transition:background .16s,color .16s,opacity .16s}
.cd-sec .rail-btn:hover:not(:disabled){background:var(--black);color:#fff}
.cd-sec .rail-btn:disabled{opacity:.3;cursor:default}
.cd-sec .rail-btn svg{width:16px;height:16px}
.cd-sec .rail-dot{width:7px;height:7px;padding:0;border:0;border-radius:50%;background:#D6D6D2;
  cursor:pointer;transition:width .22s,background .22s}
.cd-sec .rail-count{font-size:12.5px;font-weight:700;color:var(--faint);font-variant-numeric:tabular-nums}
.rail-dot.on{width:24px;border-radius:4px;background:var(--black)}

/* the grids become snapping rows; the cards keep their own look */
.cd-sec [data-rail-track]{display:grid;grid-auto-flow:column;overflow-x:auto;
  scroll-snap-type:x mandatory;scrollbar-width:none;padding:4px 4px 12px;margin:0 -4px}
.cd-sec [data-rail-track]::-webkit-scrollbar{display:none}
.cd-sec [data-rail-track] > *{scroll-snap-align:start;min-width:0}
.cd-sec .rev-grid[data-rail-track]{grid-auto-columns:minmax(320px,1fr);gap:18px}
.cd-sec .mini-grid[data-rail-track]{grid-auto-columns:minmax(258px,1fr);gap:18px}
.cd-sec .rev{height:100%}

@media(max-width:760px){
  .cd-sec .rev-grid[data-rail-track]{grid-auto-columns:minmax(272px,88%)}
  .cd-sec .mini-grid[data-rail-track]{grid-auto-columns:minmax(230px,74%)}
  .cd-sec .rail-nav{justify-content:center}
  .cd-sec .rail-dots{margin-right:0}
}

/* ==========================================================================
   Course detail on a phone: tighter sections, a buy bar that stays reachable,
   and nothing that runs off the side.
   ========================================================================== */
@media(max-width:760px){
  .cd-sec{padding:26px 20px;border-radius:26px;margin-bottom:14px}
  .cd-sec h2{font-size:22px}
  .cd-sec .sec-sub{font-size:14px}
  .cd-hero{padding:24px 20px}
  .cd-grid{grid-template-columns:1fr;gap:22px}
  .cd-facts{font-size:13px;gap:7px}
  .cd-badges{gap:7px}
  .cd-badge{font-size:12px;padding:6px 11px}
  .learn-grid{grid-template-columns:1fr!important;gap:11px}
  .rev-summary{grid-template-columns:1fr;gap:18px}
  .rev-bars{gap:7px}
  .share-row{flex-wrap:wrap;gap:8px}
  .cd-cta{padding:34px 22px;border-radius:26px}
  .cd-cta h2{font-size:24px}
  .faq summary{font-size:15px}

  /* the buy card is no use halfway down a long page */
  .buy{position:static;margin-bottom:0}
  .cd-buybar{position:fixed;left:0;right:0;bottom:0;z-index:90;display:flex;align-items:center;
    gap:12px;padding:11px 16px calc(11px + env(safe-area-inset-bottom));
    background:rgba(255,255,255,.94);backdrop-filter:blur(14px);
    border-top:1px solid var(--line);box-shadow:0 -6px 24px rgba(20,20,20,.08);
    transform:translateY(110%);transition:transform .26s cubic-bezier(.2,.9,.3,1)}
  .cd-buybar.on{transform:none}
  .cd-buybar .bb-price{flex:none}
  .cd-buybar .bb-price b{display:block;font-size:19px;font-weight:800;letter-spacing:-.02em;
    line-height:1.1}
  .cd-buybar .bb-price s{font-size:12px;color:var(--faint)}
  .cd-buybar .btn{flex:1;justify-content:center;padding:13px 18px}
  body:has(.cd-buybar.on){padding-bottom:0}
}
@media(min-width:761px){ .cd-buybar{display:none} }

/* ---------- course detail: the column beside the buy card ---------- */
.cd-h3{font-size:15px;font-weight:800;letter-spacing:.02em;margin:28px 0 12px;
  display:flex;align-items:center;gap:9px}
.cd-h3::after{content:"";flex:1;height:1px;background:var(--line)}
.cd-two{display:grid;grid-template-columns:1fr 1fr;gap:30px;margin-top:4px}
.cd-list{list-style:none;display:grid;gap:9px}
.cd-list li{display:flex;gap:9px;align-items:flex-start;font-size:14.5px;line-height:1.6;
  color:var(--ink-2)}
.cd-list svg{width:15px;height:15px;color:var(--faint);flex:none;margin-top:3px}
.cd-hero .learn-grid{grid-template-columns:1fr 1fr;gap:12px 26px}
.cd-hero .cd-badges{margin-bottom:4px}
@media(max-width:1000px){
  .cd-two{grid-template-columns:1fr;gap:8px}
  .cd-hero .learn-grid{grid-template-columns:1fr}
}
.cd-about{font-size:15.5px;line-height:1.75;color:var(--ink-2)}
.cd-about p{margin-bottom:12px}
.cd-about b,.cd-about strong{color:var(--ink)}


/* ---------- sticky buy card ---------- */
.buy{position:sticky;top:100px;background:#fff;border:1px solid var(--line);
  border-radius:22px;overflow:hidden;box-shadow:var(--sh)}
.buy .art{position:relative;aspect-ratio:16/9;overflow:hidden}
.buy .art img{width:100%;height:100%;object-fit:cover;display:block}
.art-off{position:absolute;top:12px;right:12px;font-size:11.5px;font-weight:800;
  background:var(--green);color:#fff;padding:5px 11px;border-radius:999px;
  box-shadow:0 4px 12px rgba(34,197,94,.3)}
.buy .bd{padding:20px}
.seats{display:flex;align-items:center;gap:7px;font-size:12.5px;font-weight:700;color:#B45309;
  background:#FFFBEB;border:1px solid #FDE68A;border-radius:9px;padding:8px 11px;margin-bottom:14px}
.seats svg{width:14px;height:14px}
.buy .price{display:flex;align-items:baseline;gap:9px;flex-wrap:wrap}
.buy .price b{font-size:34px;font-weight:800;letter-spacing:-.035em;line-height:1}
.buy .price s{font-size:15px;color:var(--faint)}
.save{font-size:13px;font-weight:700;color:#166534;margin-top:5px}
.buy-cta{width:100%;justify-content:center;margin-top:16px;font-size:16px;padding:14px 20px}
.buy-alt{display:block;text-align:center;font-size:13px;color:var(--faint);margin-top:10px}
.buy-alt:hover{color:var(--ink);text-decoration:underline}
.buy-list{list-style:none;display:grid;gap:9px;margin-top:18px;padding-top:16px;
  border-top:1px solid var(--line)}
.buy-list li{display:flex;gap:9px;align-items:flex-start;font-size:13.5px;color:var(--ink-2);
  line-height:1.5}
.buy-list svg{width:14px;height:14px;color:var(--green);flex:none;margin-top:2px}
.buy-note{display:flex;align-items:center;gap:6px;justify-content:center;font-size:12px;
  color:var(--faint);margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}
.buy-note svg{width:13px;height:13px}
.buy-note a{color:var(--faint);text-decoration:underline}
.buy-note a:hover{color:var(--ink)}

/* ---------- "this course includes" strip ---------- */
.incl{display:grid;grid-template-columns:1fr 1fr;gap:12px 24px;margin-bottom:6px}
.incl-i{display:flex;gap:11px;align-items:flex-start}
.incl-i svg{width:17px;height:17px;color:var(--ink-2);flex:none;margin-top:3px}
.incl-i b{display:block;font-size:14.5px;letter-spacing:-.01em}
.incl-i em{display:block;font-style:normal;font-size:12.5px;color:var(--faint);margin-top:1px}

/* ---------- who teaches it ---------- */
.tutor{display:flex;align-items:center;gap:13px;margin-top:26px;padding:14px 16px;
  border:1px solid var(--line);border-radius:16px;background:var(--panel-2)}
.tutor-av{width:44px;height:44px;border-radius:50%;background:var(--ink);color:#fff;
  display:grid;place-items:center;font-size:17px;font-weight:800;flex:none}
.tutor-w em{display:block;font-style:normal;font-size:11.5px;font-weight:700;letter-spacing:.07em;
  text-transform:uppercase;color:var(--faint)}
.tutor-w b{display:block;font-size:15.5px;letter-spacing:-.01em;margin-top:2px}
.tutor-w > span{display:block;font-size:12.5px;color:var(--ink-2);margin-top:2px}

@media(max-width:1000px){
  .buy{position:static}
  .incl{grid-template-columns:1fr}
}


/* A rail that drifts continuously must not snap — the snap points fight the
   animation and make it stutter. */
.rail-flowing [data-rail-track]{scroll-snap-type:none!important;scroll-behavior:auto!important}
.rail-flowing [data-rail-track] > *{scroll-snap-align:none!important}


/* ---------- course detail: banner ---------- */
.cd-banner{position:relative;border-radius:var(--r-panel);overflow:hidden;margin-bottom:22px;
  background:#0C0C0E;color:#fff;isolation:isolate}
.cdb-art{position:absolute;inset:0;z-index:0}
.cdb-art img{width:100%;height:100%;object-fit:cover;opacity:.9}
.cd-banner::after{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(100deg,rgba(10,10,12,.94) 0%,rgba(10,10,12,.82) 46%,
    rgba(10,10,12,.55) 72%,rgba(10,10,12,.42) 100%)}

.cdb-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,520px);
  gap:clamp(30px,4vw,60px);align-items:center;padding:clamp(32px,4.4vw,58px)}
.cdb-in{min-width:0}
.cdb-kick{display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:600;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);
  backdrop-filter:blur(8px);padding:9px 17px;border-radius:10px;margin-bottom:20px}
.cdb-kick i{font-style:normal;font-size:8px;opacity:.6}
.cdb-h1{font-size:clamp(28px,4vw,48px);font-weight:900;letter-spacing:-.035em;
  line-height:1.08;margin-bottom:14px}
.cdb-sub{font-size:clamp(15px,1.4vw,17px);line-height:1.6;color:rgba(255,255,255,.76);
  max-width:560px;margin-bottom:26px}
.cdb-facts{display:flex;gap:clamp(22px,3vw,44px);flex-wrap:wrap;margin-bottom:26px}
.cdb-facts em{display:block;font-style:normal;font-size:13px;color:rgba(255,255,255,.55);
  margin-bottom:5px}
.cdb-facts b{display:block;font-size:15px;font-weight:700;letter-spacing:-.01em;max-width:190px}
.cdb-cta{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.cdb-btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;
  background:#fff;color:#101011;font-weight:800;font-size:16px;letter-spacing:-.01em;
  padding:16px 38px;border-radius:999px;min-width:min(300px,100%);
  transition:transform .16s,box-shadow .16s,background .16s}
.cdb-btn:hover{transform:translateY(-2px);background:#F2F2EF;box-shadow:0 14px 34px rgba(0,0,0,.34)}
.cdb-rate{display:flex;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.7)}
.cdb-rate b{color:#fff}
.cdb-rate em{font-style:normal}
.cdb-rate svg{width:14px;height:14px}

/* ---------- the learner's video review, beside the pitch ---------- */
.cdb-side{display:grid;align-content:center;min-width:0}
.ugc{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:24px;overflow:hidden;backdrop-filter:blur(10px);
  box-shadow:0 30px 70px rgba(0,0,0,.42)}
.ugc-frame{position:relative;aspect-ratio:16/9;background:#000;cursor:pointer}
.ugc-thumb{width:100%;height:100%;object-fit:cover;display:block;transition:transform .4s,opacity .3s}
.ugc:hover .ugc-thumb{transform:scale(1.04);opacity:.86}
.ugc-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.ugc-play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:72px;height:72px;border-radius:50%;border:0;background:rgba(255,255,255,.94);
  display:grid;place-items:center;cursor:pointer;transition:transform .2s,background .2s;
  box-shadow:0 10px 30px rgba(0,0,0,.4)}
.ugc:hover .ugc-play{transform:translate(-50%,-50%) scale(1.08);background:#fff}
.ugc-tri{width:0;height:0;margin-left:5px;border-top:14px solid transparent;
  border-bottom:14px solid transparent;border-left:23px solid #101011}
.ugc-tag{position:absolute;left:12px;bottom:12px;display:inline-flex;align-items:center;gap:6px;
  font-size:11px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;
  background:rgba(10,10,12,.72);color:#fff;padding:5px 11px;border-radius:999px;
  backdrop-filter:blur(6px)}
.ugc-tag svg{width:12px;height:12px}
.ugc-foot{padding:17px 20px}
.ugc-foot b{display:block;font-size:15.5px;letter-spacing:-.01em}
.ugc-foot em{display:block;font-style:normal;font-size:12.5px;color:rgba(255,255,255,.6);margin-top:2px}

/* the review column beside the video, masked so cards fade in and out */
.uq-wall{position:relative;height:230px;overflow:hidden;
  -webkit-mask-image:linear-gradient(180deg,transparent,#000 16%,#000 82%,transparent);
  mask-image:linear-gradient(180deg,transparent,#000 16%,#000 82%,transparent)}
.uq-track{display:flex;flex-direction:column;gap:10px;animation:uqrise 34s linear infinite;
  will-change:transform}
.uq-wall:hover .uq-track{animation-play-state:paused}
@keyframes uqrise{from{transform:translateY(0)}to{transform:translateY(calc(-50% - 5px))}}
.ugc-quotes{display:grid;gap:10px}
.uq{margin:0;flex:none;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
  border-radius:16px;padding:14px 16px;backdrop-filter:blur(8px)}
.uq-stars{font-size:11px;color:#F5A623;letter-spacing:1.5px}
.uq blockquote{margin:7px 0 11px;font-size:13.5px;line-height:1.6;color:rgba(255,255,255,.9)}
.uq figcaption{display:flex;align-items:center;gap:9px}
.uq-av{width:28px;height:28px;border-radius:50%;background:rgba(255,255,255,.16);
  display:grid;place-items:center;font-size:11px;font-weight:800;flex:none}
.uq b{display:block;font-size:12.5px}
.uq em{display:block;font-style:normal;font-size:11px;color:rgba(255,255,255,.55)}
.uq-all{display:inline-flex;margin-top:2px;align-items:center;gap:7px;font-size:12.5px;font-weight:700;
  color:rgba(255,255,255,.8);padding:2px}
.uq-all:hover{color:#fff}
.uq-all svg{width:14px;height:14px;transition:transform .18s}
.uq-all:hover svg{transform:translateX(3px)}

.cd-sub{font-size:14px;color:var(--ink-2);margin:-8px 0 18px}

@media(max-width:1000px){
  .cdb-grid{grid-template-columns:1fr;gap:26px}
  .cdb-side{max-width:520px}
}
@media(max-width:760px){
  .cd-banner{border-radius:28px}
  .cdb-grid{padding:26px 20px}
  .cdb-facts{gap:18px}
  .cdb-facts > div{min-width:44%}
  .cdb-btn{width:100%;min-width:0;padding:15px 24px}
  .ugc-foot{padding:11px 14px}
}

/* the banner's right column when a course has no video or reviews yet */
.ugc-blank{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:20px;padding:22px;backdrop-filter:blur(10px)}
.ub-ic{width:42px;height:42px;border-radius:13px;background:rgba(255,255,255,.14);
  display:grid;place-items:center;margin-bottom:14px}
.ub-ic svg{width:19px;height:19px}
.ugc-blank b{display:block;font-size:17px;letter-spacing:-.02em}
.ugc-blank em{display:block;font-style:normal;font-size:13px;color:rgba(255,255,255,.62);
  margin-top:3px}
.ugc-blank ul{list-style:none;display:grid;gap:8px;margin-top:16px;padding-top:14px;
  border-top:1px solid rgba(255,255,255,.14)}
.ugc-blank li{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.8)}
.ugc-blank svg{width:14px;height:14px;color:#4ADE80;flex:none}

/* Grid children default to min-width:auto, so a wide child (a long lesson row,
   a breadcrumb) pushes the column past the viewport instead of shrinking. */
.cd-grid > *{min-width:0}
.cd-grid,.cpage{min-width:0}
.cd-sec,.cd-hero{overflow-x:clip}


/* --- catalogue filter bar --------------------------------------------- */
.cf{background:#fff;border:1px solid var(--line);border-radius:20px;padding:14px;
  margin-bottom:24px;display:grid;gap:12px}
.cf-top{display:flex;gap:10px;align-items:center}
.cf-search{flex:1;min-width:0;display:flex;align-items:center;gap:10px;padding:0 14px;
  height:46px;border-radius:13px;background:var(--panel-2);border:1px solid transparent}
.cf-search:focus-within{border-color:var(--brand);background:#fff}
.cf-search svg{width:18px;height:18px;color:var(--muted);flex:none}
.cf-search input{flex:1;min-width:0;border:0;background:none;font:inherit;font-size:15px;
  outline:none;color:inherit}
.cf-sel{height:46px;border:1px solid var(--line);border-radius:13px;background-color:#fff;
  padding:0 34px 0 13px;font:inherit;font-size:14px;cursor:pointer;color:inherit;
  appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b6b7b' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 11px center;background-size:15px}
.cf-sel:focus{outline:none;border-color:var(--brand)}
.cf-sort{min-width:154px}
.cf-go{height:46px;padding:0 22px;border-radius:13px}

.cf-bottom{display:flex;gap:14px;align-items:center;flex-wrap:wrap;
  padding-top:12px;border-top:1px solid var(--line)}
.cf-seg{display:inline-flex;background:var(--panel-2);border-radius:12px;padding:3px;gap:2px}
.cf-seg button{display:inline-flex;align-items:center;gap:7px;border:0;cursor:pointer;
  padding:8px 14px;border-radius:9px;background:none;font:inherit;font-size:13.5px;
  font-weight:600;color:var(--muted);white-space:nowrap}
.cf-seg button:hover{color:var(--ink)}
.cf-seg button.on{background:#fff;color:var(--ink);box-shadow:0 1px 3px rgba(20,20,45,.12)}
.cf-seg button b{font-size:11.5px;font-weight:700;color:var(--faint)}
.cf-seg button.on b{color:var(--brand)}

.cf-refine{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-left:auto}
.cf-field{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.cf-field .cf-sel{height:38px;font-size:13.5px}
.cf-clear{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;
  color:var(--muted);text-decoration:none;padding:8px 12px;border-radius:9px}
.cf-clear:hover{background:var(--panel-2);color:var(--ink)}
.cf-clear svg{width:13px;height:13px}

@media(max-width:820px){
  .cf-top{flex-wrap:wrap}
  .cf-search{flex-basis:100%}
  .cf-sort{flex:1}
  .cf-bottom{flex-direction:column;align-items:stretch}
  .cf-seg{overflow-x:auto;scrollbar-width:none}
  .cf-seg::-webkit-scrollbar{display:none}
  .cf-refine{margin-left:0}
  .cf-field{flex:1}
  .cf-field .cf-sel{flex:1;min-width:0}
}