:root{
  --crimson:#7A1A20; --crimson-bright:#A02530; --crimson-deep:#5E1218;
  --navy:#14284D; --navy-2:#1F3A6B;
  --cream:#FBF6E7; --cream-2:#F3EFDC; --paper:#FFFDF8;
  --stone:#7A7060; --ink:#3A3628; --line:#D5CFBF;
  --serif:Georgia,'Iowan Old Style','Times New Roman',serif;
  --sans:'Calibri','Carlito','Segoe UI',system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--sans);color:var(--ink);
  background:radial-gradient(circle at 1px 1px,rgba(122,26,32,.08) 1.2px,transparent 0),var(--cream);
  background-size:22px 22px;line-height:1.55}
a{color:inherit}
.wrap{max-width:1180px;margin:0 auto;padding:0 28px}

/* nav */
nav{position:sticky;top:0;z-index:30;background:rgba(251,246,231,.94);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.navin{max-width:1180px;margin:0 auto;padding:14px 28px;display:flex;
  align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.logo{font-family:var(--serif);font-size:21px;font-weight:700;color:var(--navy);text-decoration:none;white-space:nowrap}
.logo span{color:var(--crimson)}
.navlinks{display:flex;gap:10px;flex-wrap:wrap}
.navlinks a{text-decoration:none;color:var(--cream);font-weight:700;font-size:16px;
  padding:11px 22px;border-radius:28px;
  background:linear-gradient(135deg,var(--crimson-bright),var(--crimson-deep));
  box-shadow:0 6px 14px -6px rgba(122,26,32,.55);
  transition:transform .15s ease,background .15s ease}
.navlinks a:hover{transform:translateY(-2px);background:var(--navy)}

/* hero */
.hero{position:relative;overflow:hidden;padding:58px 0 64px}
.hero .wrap{position:relative;z-index:1}
.hero-art{position:absolute;right:-70px;top:-60px;width:620px;height:620px;pointer-events:none;opacity:.95}
.kicker{display:inline-block;font-size:11.5px;font-weight:700;letter-spacing:.4px;color:var(--crimson);
  background:var(--cream-2);border:1px solid var(--line);padding:6px 13px;border-radius:20px;margin-bottom:18px}
h1{font-family:var(--serif);font-weight:700;font-size:clamp(30px,5vw,42px);line-height:1.16;
  color:var(--navy);margin:0 0 18px;max-width:17ch}
h1 i{color:var(--crimson)}
.lede{font-size:16px;line-height:1.65;max-width:46ch;margin:0 0 28px}
.cta{display:inline-block;background:var(--crimson);color:var(--cream);text-decoration:none;
  font-size:15px;font-weight:600;padding:13px 26px;border-radius:26px;transition:transform .15s,background .15s}
.cta:hover{background:var(--crimson-deep);transform:translateY(-2px)}
.cta2{font-size:14px;color:var(--navy);margin-left:20px;border-bottom:1.5px solid var(--navy);
  text-decoration:none;padding-bottom:2px}
.cta2:hover{color:var(--crimson);border-color:var(--crimson)}

/* sections */
section{padding:52px 0;border-top:1px solid var(--line);position:relative}
h2{font-family:var(--serif);font-weight:700;font-size:27px;color:var(--navy);margin:0 0 8px}
.sub{font-size:14px;color:var(--stone);margin:0 0 28px;max-width:60ch}
.byline{font-family:var(--serif);font-style:italic;font-size:16.5px;color:var(--navy);margin:0 0 6px}

/* about */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:38px}
.grid2 p{font-size:14.5px;line-height:1.68;margin:0 0 14px}
.fact{display:flex;justify-content:space-between;gap:16px;font-size:13.5px;
  border-top:1px solid var(--line);padding:12px 4px;border-radius:6px}
.fact:last-child{border-bottom:1px solid var(--line)}
.fact span:first-child{color:var(--stone)}
.buy{font-size:13.5px;color:var(--stone);margin-top:4px}
.buy a{color:var(--crimson);font-weight:600}

/* curriculum */
.chapters{width:100%;border-collapse:separate;border-spacing:0}
.chapters td{border-bottom:1px solid var(--line);padding:15px 10px;vertical-align:middle;font-size:15px}
.chapters tr.live:hover{background:var(--cream-2)}
.badge{width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-size:16px;font-weight:700}
tr.live .badge{background:linear-gradient(135deg,var(--crimson-bright),var(--crimson-deep));
  color:var(--cream);box-shadow:0 4px 10px -3px rgba(122,26,32,.5)}
tr.soon .badge{border:1.5px solid var(--line);color:var(--stone);background:var(--paper)}
.ct a{color:var(--navy);text-decoration:none;font-weight:600}
tr.live .ct a:hover{color:var(--crimson-deep);text-decoration:underline}
.ct .who{display:block;font-size:12.5px;color:var(--stone);margin-top:3px;font-weight:400}
.cf{text-align:right;white-space:nowrap;font-size:11px;letter-spacing:.3px;color:var(--stone)}
tr.live .cf a{color:var(--crimson);font-weight:700;text-decoration:none}
tr.live .cf a:hover{text-decoration:underline}

/* insights */
.cat-nav{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.cat-nav a{text-decoration:none;font-size:14.5px;font-weight:700;color:var(--cream);
  padding:12px 20px;border-radius:26px;
  background:linear-gradient(135deg,var(--crimson-bright),var(--crimson-deep));
  box-shadow:0 6px 14px -6px rgba(122,26,32,.5);transition:transform .15s,background .15s}
.cat-nav a:hover{transform:translateY(-2px);background:var(--navy)}
.cat{margin-bottom:34px;scroll-margin-top:84px}
.cat-label{font-family:var(--serif);font-weight:700;font-size:19px;color:var(--navy);
  display:inline-block;margin-bottom:14px;padding-bottom:8px;border-bottom:2px solid var(--crimson)}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{position:relative;display:block;text-decoration:none;background:var(--paper);
  border:1px solid var(--line);border-radius:16px;padding:22px 20px 20px;overflow:hidden;
  transition:transform .18s,box-shadow .18s,background .18s}
.card::before{content:"";position:absolute;inset:0 0 auto 0;height:5px;
  background:linear-gradient(90deg,var(--crimson-bright),var(--navy-2))}
.card::after{content:"\2197";position:absolute;top:16px;right:16px;font-size:15px;color:var(--line);transition:color .18s}
.card:hover{transform:translateY(-4px);border-color:transparent;
  box-shadow:0 18px 30px -14px rgba(20,33,61,.5);
  background:linear-gradient(155deg,var(--navy),var(--crimson-deep) 160%)}
.card:hover::after{color:var(--cream)}
.c-title{font-size:15px;font-weight:600;color:var(--navy);line-height:1.4;margin-bottom:6px;padding-right:26px}
.card:hover .c-title{color:var(--cream)}
.c-src{font-size:12px;color:var(--stone)}
.card:hover .c-src{color:rgba(251,246,231,.75)}
.new{display:inline-block;font-size:10px;font-weight:700;letter-spacing:.5px;
  color:var(--cream);background:var(--crimson);padding:3px 9px;border-radius:10px;margin-bottom:10px}
details.more{margin-top:14px}
details.more summary{display:inline-block;cursor:pointer;list-style:none;font-size:14px;font-weight:700;
  color:var(--crimson);border:1.5px solid var(--crimson);padding:9px 18px;border-radius:24px}
details.more summary::-webkit-details-marker{display:none}
details.more summary:hover,details.more[open] summary{background:var(--crimson);color:var(--cream)}
details.more[open] summary{margin-bottom:14px}

/* chapter page */
.chead{padding:44px 0 10px}
.back{display:inline-block;font-size:13.5px;color:var(--stone);text-decoration:none;margin-bottom:18px}
.back:hover{color:var(--crimson-deep);text-decoration:underline}
.cnum{font-family:var(--serif);font-size:13px;font-weight:700;color:var(--crimson);letter-spacing:.5px;margin-bottom:6px}
.chead h1{max-width:24ch;font-size:clamp(26px,4.4vw,36px)}
.vid{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:22px;
  display:flex;gap:24px;align-items:center;flex-wrap:wrap;margin:26px 0 8px}
.vid-ph{flex:1 1 300px;aspect-ratio:16/9;border-radius:12px;
  background:linear-gradient(135deg,var(--navy),var(--crimson-deep) 170%);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px}
.play{width:58px;height:58px;border-radius:50%;background:rgba(251,246,231,.95);color:var(--navy);
  display:flex;align-items:center;justify-content:center;font-size:19px;padding-left:4px}
.vid-ph span{color:var(--cream);font-size:13px}
.vid-txt{flex:1 1 260px}
.vid-txt h3{font-family:var(--serif);font-size:19px;color:var(--navy);margin:0 0 8px}
.vid-txt p{font-size:14px;margin:0;color:var(--stone)}
.slides{display:flex;flex-direction:column;gap:20px;padding:10px 0 20px}
/* slides are the reason people are on this page, so give them the screen
   rather than the 1180px reading column the prose uses */
.wrap.wide{max-width:1680px;padding:0 32px}
.slides img{image-rendering:auto}
.slides img{width:100%;height:auto;aspect-ratio:16/9;border:1px solid var(--line);border-radius:10px;display:block;background:var(--paper)}
.pager{display:flex;justify-content:space-between;gap:14px;padding:26px 0 10px;flex-wrap:wrap}
.pager a{text-decoration:none;font-size:14px;font-weight:600;color:var(--navy);
  border:1.5px solid var(--line);background:var(--paper);padding:11px 20px;border-radius:24px}
.pager a:hover{border-color:var(--crimson);color:var(--crimson)}

footer{background:linear-gradient(135deg,var(--navy),var(--crimson-deep) 170%);color:#DCD5C4;padding:40px 0;margin-top:10px}
.frow{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px}
.fw{font-family:var(--serif);font-size:18px;color:var(--cream)}
.fw span{color:#E7A9A9}
footer a{color:#DCD5C4}

@media(max-width:860px){
  .wrap,.navin{padding-left:18px;padding-right:18px}
  .hero-art{display:none}
  .grid2{grid-template-columns:1fr;gap:24px}
  .cards{grid-template-columns:1fr}
  .navlinks{width:100%;justify-content:space-between;gap:7px}
  .navlinks a{flex:1;text-align:center;padding:11px 6px;font-size:14px}
  .logo{font-size:19px}
  .cta2{display:inline-block;margin:16px 0 0}
  .chapters td{padding:13px 6px;font-size:14px}
  .cf{font-size:10px}
}

/* slides */
.hint{font-size:13px;color:var(--stone);margin:0 0 4px}
a.sl{display:block}
a.sl img{transition:box-shadow .15s}
a.sl:hover img{box-shadow:0 10px 24px -12px rgba(20,33,61,.45)}
@media(max-width:860px){
  /* on a phone the deck behaves like a deck: one slide per screen, swiped
     sideways, edge to edge. turned sideways the phone is 16:9 and each slide
     fills it completely. */
  .slides{flex-direction:row;gap:0;overflow-x:auto;scroll-snap-type:x mandatory;
          -webkit-overflow-scrolling:touch;margin:0 calc(50% - 50vw);
          padding:4px 0 18px;scrollbar-width:none}
  .slides::-webkit-scrollbar{display:none}
  a.sl{flex:0 0 100vw;scroll-snap-align:center;box-sizing:border-box;
       padding:0 10px;overflow:visible;display:flex;align-items:center;
       justify-content:center}
  a.sl img{width:auto;height:auto;max-width:100%;max-height:88vh;border-radius:8px;margin:0 auto}
}

/* a phone held sideways is only ~390px tall: give the whole screen to the
   slide rather than to a floating menu bar */
@media(max-height:500px) and (orientation:landscape){
  nav{position:static}
}