/* ------------------------------- fonts --------------------------------
   Self-hosted latin subsets. Going through fonts.googleapis.com costs a
   render-blocking stylesheet on one third-party origin and then the woff2
   itself on a second; from here it is the connection we already have open,
   and the two hero faces are preloaded in the <head>.
   swap, so text paints immediately in the fallback and reflows once.       */
@font-face{font-family:Archivo;font-style:normal;font-weight:600;font-display:swap;
  src:url(fonts/archivo-600.woff2) format("woff2")}
@font-face{font-family:Archivo;font-style:normal;font-weight:700;font-display:swap;
  src:url(fonts/archivo-700.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:400;font-display:swap;
  src:url(fonts/ibm-plex-sans-400.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:400;font-display:swap;
  src:url(fonts/ibm-plex-mono-400.woff2) format("woff2")}

:root{
  --ground:#06080b; --surface:#0d1116; --surface-2:#141a22;
  --ink:#eaeef4; --ink-2:#93a0b2; --ink-3:#68758a;
  --rule:#1c232d; --rule-2:#2a3542;
  --accent:#0dd9ff; --accent-2:#ff26b2;
  --radius:14px;
  --measure:66ch;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--ground); color:var(--ink);
  font-family:"IBM Plex Sans",system-ui,sans-serif;
  font-size:16.5px; line-height:1.62; -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit}
h1,h2,h3{font-family:Archivo,system-ui,sans-serif;margin:0;text-wrap:balance}
.wrap{max-width:1240px;margin:0 auto;padding:0 26px}
.eyebrow{
  font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--ink-3);
}

/* ---------------- hero, with the live attractor behind it --------------- */
#bg{position:fixed;inset:0;width:100%;height:100%;z-index:0;opacity:.9}
body.viewing .hero,body.viewing .support{display:none}
body.viewing #bg{opacity:.34}
.hero{
  position:relative;z-index:1;min-height:92svh;display:flex;flex-direction:column;
  justify-content:center;align-items:center;text-align:center;padding:80px 26px 40px;
  min-height:92vh;
}
.hero-glass{
  position:absolute; left:50%; top:45%; transform:translate(-50%,-50%);
  width:min(920px,94vw); height:min(500px,64vh); z-index:0; pointer-events:none;
  backdrop-filter:blur(26px) saturate(1.05) brightness(1.45);
  -webkit-backdrop-filter:blur(26px) saturate(1.05) brightness(1.45);
  background:radial-gradient(closest-side,rgba(12,17,24,.20),rgba(12,17,24,0) 78%);
  /* feathered, so it reads as a soft haze rather than a glass box */
  -webkit-mask-image:radial-gradient(closest-side,#000 42%,transparent 80%);
  mask-image:radial-gradient(closest-side,#000 42%,transparent 80%);
}
.hero-inner{
  position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;
  width:100%;max-width:100%;   /* without this the tagline's 44ch overflows narrow screens */
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:radial-gradient(120% 70% at 50% 46%, transparent 30%, var(--ground) 78%);
}
.mark{
  font-family:Archivo,sans-serif;font-weight:700;
  font-size:clamp(2.4rem,7.5vw,5.2rem);line-height:.98;letter-spacing:.02em;
  text-transform:uppercase;
  background:linear-gradient(96deg,var(--accent),#ffffff 46%,var(--accent-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 0 34px rgba(13,217,255,.18));
}
.tagline{max-width:min(44ch,100%);margin:22px auto 0;color:var(--ink-2);font-size:1.06rem}
.hero-meta{margin-top:30px;display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.pill{
  font-family:"IBM Plex Mono",monospace;font-size:11.5px;letter-spacing:.07em;
  padding:7px 13px;border:1px solid var(--rule-2);border-radius:99px;
  color:var(--ink-2);background:rgba(13,17,22,.6);backdrop-filter:blur(8px);
}
.scroll-cue{
  margin-top:52px;color:var(--ink-3);font-size:12px;letter-spacing:.16em;
  text-transform:uppercase;font-family:"IBM Plex Mono",monospace;
  animation:bob 2.6s ease-in-out infinite;
}
@keyframes bob{0%,100%{transform:translateY(0);opacity:.55}50%{transform:translateY(7px);opacity:1}}

/* ------------------------------- shell -------------------------------- */
main{position:relative;z-index:1;background:linear-gradient(180deg,transparent,var(--ground) 90px);}
.section-head{padding:26px 0 30px;border-bottom:1px solid var(--rule);margin-bottom:38px}
.section-head h2{font-size:1.5rem;font-weight:600;letter-spacing:-.01em;margin-top:10px}
.section-head p{color:var(--ink-2);max-width:var(--measure);margin:10px 0 0}

/* ------------------------------- grid --------------------------------- */
.grid{
  display:grid;gap:22px;padding-bottom:100px;
  grid-template-columns:repeat(auto-fill,minmax(248px,1fr));
}
.card{
  position:relative;border:1px solid var(--rule);border-radius:var(--radius);
  overflow:hidden;background:var(--surface);cursor:pointer;text-align:left;
  padding:0;color:inherit;font:inherit;display:block;
  transition:transform .38s cubic-bezier(.2,.7,.3,1), border-color .38s, box-shadow .38s;
}
.card:hover,.card:focus-visible{
  transform:translateY(-6px);
  border-color:color-mix(in srgb,var(--c1) 55%,transparent);
  box-shadow:0 18px 48px -20px color-mix(in srgb,var(--c1) 60%,transparent),
             0 0 0 1px color-mix(in srgb,var(--c1) 22%,transparent);
  outline:none;
}
.card-media{position:relative;aspect-ratio:9/15;overflow:hidden;background:#04060a}
.card-media img{
  width:100%;height:100%;object-fit:cover;display:block;
  transition:transform .7s cubic-bezier(.2,.7,.3,1),filter .5s;
}
.card:hover .card-media img{transform:scale(1.06)}
.card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 42%,rgba(6,8,11,.82) 88%);
}
.card-glow{
  position:absolute;inset:0;opacity:0;transition:opacity .45s;pointer-events:none;
  background:radial-gradient(70% 44% at 12% 92%, color-mix(in srgb,var(--c1) 44%,transparent), transparent 70%),
             radial-gradient(70% 44% at 88% 92%, color-mix(in srgb,var(--c2) 44%,transparent), transparent 70%);
}
.card:hover .card-glow{opacity:1}
.card-body{position:absolute;left:0;right:0;bottom:0;padding:16px 17px 17px}
.card-kind{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.15em;
  text-transform:uppercase;color:var(--ink-3)}
.card-title{font-family:Archivo,sans-serif;font-weight:600;font-size:1.24rem;
  letter-spacing:-.01em;margin-top:4px;line-height:1.15}
.swatch{display:flex;gap:4px;margin-top:11px}
.swatch i{width:20px;height:3px;border-radius:2px;display:block}
.card-num{
  position:absolute;top:13px;right:14px;font-family:"IBM Plex Mono",monospace;
  font-size:11px;color:var(--ink-2);background:rgba(6,8,11,.62);
  border:1px solid var(--rule-2);border-radius:99px;padding:3px 9px;
  backdrop-filter:blur(6px);
}

/* ------------------------------ detail -------------------------------- */
#detail{display:none;padding-bottom:110px}
#detail.on{display:block;animation:rise .5s cubic-bezier(.2,.7,.3,1)}
@keyframes rise{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
.back{
  display:inline-flex;align-items:center;gap:9px;margin:28px 0 26px;
  background:none;border:1px solid var(--rule-2);color:var(--ink-2);
  border-radius:99px;padding:8px 16px;cursor:pointer;font:inherit;font-size:13.5px;
  transition:color .25s,border-color .25s;
}
.back:hover{color:var(--ink);border-color:var(--ink-3)}
.detail-head{position:relative;padding:34px 0 30px;overflow:hidden;border-radius:var(--radius);margin-bottom:30px}
.detail-head::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:radial-gradient(58% 100% at 0% 50%, color-mix(in srgb,var(--c1) 34%,transparent), transparent 68%),
             radial-gradient(58% 100% at 100% 50%, color-mix(in srgb,var(--c2) 34%,transparent), transparent 68%);
}
.detail-head h2{font-size:clamp(2rem,5.4vw,3.1rem);font-weight:700;letter-spacing:-.025em}
.detail-head p{color:var(--ink-2);max-width:56ch;margin:14px auto 0}
.detail-head .inner{text-align:center;padding:0 22px}
/* minmax(0,…), not 1fr: a bare 1fr can't shrink below the longest code line,
   which pushed the video and code off the right edge of a phone. */
.cols{display:grid;gap:30px;grid-template-columns:minmax(0,1fr);align-items:start}
@media(min-width:1000px){.cols{grid-template-columns:minmax(0,380px) minmax(0,1fr);gap:38px}
  .vid-col{position:sticky;top:26px}}
.facts{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}
.fact{font-family:"IBM Plex Mono",monospace;font-size:11px;color:var(--ink-2);
  border:1px solid var(--rule);border-radius:8px;padding:6px 10px;background:var(--surface)}

.code-head{
  display:flex;justify-content:space-between;align-items:center;gap:14px;
  padding:12px 15px;border:1px solid var(--rule);border-bottom:none;
  border-radius:var(--radius) var(--radius) 0 0;background:var(--surface-2);flex-wrap:wrap;
}
.code-head .name{font-family:"IBM Plex Mono",monospace;font-size:12.5px;color:var(--ink-2)}
.btn-row{display:flex;gap:8px}
.btn{
  font:inherit;font-size:12.5px;font-family:"IBM Plex Mono",monospace;
  border:1px solid var(--rule-2);background:var(--surface);color:var(--ink);
  border-radius:8px;padding:7px 13px;cursor:pointer;text-decoration:none;
  transition:border-color .25s,background .25s,color .25s;white-space:nowrap;
}
.btn:hover{border-color:color-mix(in srgb,var(--c1) 65%,transparent);
  background:color-mix(in srgb,var(--c1) 12%,var(--surface))}
.btn.ok{border-color:#3fbf88;color:#7ee0b0}
pre.code{
  margin:0;padding:19px;overflow:auto;max-height:66vh;
  border:1px solid var(--rule);border-radius:0 0 var(--radius) var(--radius);
  background:#080b10;font-family:"IBM Plex Mono",monospace;font-size:12.6px;
  line-height:1.62;color:#c9d4e3;tab-size:4;
}
pre.code .k{color:#ff5cb8}
pre.code .s{color:#8fe3b0}
pre.code .n{color:#5be3ff}
pre.code .c{color:#5c6b80;font-style:italic}
pre.code .f{color:#74aeff}

.howto{margin-top:26px;border:1px solid var(--rule);border-radius:var(--radius);
  padding:20px 22px;background:var(--surface)}
.howto h3{font-size:1.02rem;font-weight:600;margin-bottom:12px}
.howto ol{margin:0;padding-left:1.25em;color:var(--ink-2);display:flex;flex-direction:column;gap:7px}
.howto ol li::marker{color:var(--c1)}
.howto code{font-family:"IBM Plex Mono",monospace;font-size:12.5px;
  background:var(--surface-2);padding:1px 6px;border-radius:4px;color:var(--ink)}

footer{border-top:1px solid var(--rule);padding:34px 0 60px;color:var(--ink-3);font-size:13.5px}
footer a{color:var(--ink-2);text-decoration-thickness:1px;text-underline-offset:3px}
.foot-row{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;align-items:center}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  #bg{display:none}
}

/* ------------------------------- support ------------------------------
   Sits between the hero and the library. Same two-tone wash as the detail
   headers, so it reads as part of the set rather than an ad slot.         */
.support{
  position:relative;overflow:hidden;margin:34px 0 46px;
  border:1px solid var(--rule);border-radius:var(--radius);
  padding:22px 24px;background:var(--surface);
  display:flex;align-items:center;justify-content:space-between;gap:20px 26px;flex-wrap:wrap;
}
.support::before{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(62% 130% at 0% 50%, color-mix(in srgb,var(--accent) 15%,transparent), transparent 70%),
             radial-gradient(62% 130% at 100% 50%, color-mix(in srgb,var(--accent-2) 15%,transparent), transparent 70%);
}
.support > *{position:relative;z-index:1}
.support-copy{max-width:58ch}
.support-copy h2{font-size:1.16rem;font-weight:600;letter-spacing:-.01em;margin-top:7px}
.support-copy p{color:var(--ink-2);margin:7px 0 0;font-size:.97rem}
.support-cta{
  display:inline-flex;align-items:center;gap:9px;white-space:nowrap;
  font-family:Archivo,sans-serif;font-weight:600;font-size:.97rem;text-decoration:none;
  padding:12px 22px;border-radius:99px;color:#06080b;
  background:linear-gradient(96deg,var(--accent),var(--accent-2));
  box-shadow:0 14px 34px -16px color-mix(in srgb,var(--accent) 80%,transparent);
  transition:transform .3s cubic-bezier(.2,.7,.3,1),box-shadow .3s,filter .3s;
}
.support-cta:hover,.support-cta:focus-visible{
  transform:translateY(-2px);filter:brightness(1.08);
  box-shadow:0 20px 44px -16px color-mix(in srgb,var(--accent) 90%,transparent);
}
.support-cta svg{width:17px;height:17px;flex:none}
@media(max-width:560px){
  .support{padding:20px}
  .support-cta{width:100%;justify-content:center}
}

/* --------------------------- the video slot ---------------------------
   Two shapes go in here: a local <video>, or the YouTube facade below.
   Both are held at 9:16 so the column does not jump when the embed loads. */
.vid-frame{
  position:relative;width:100%;aspect-ratio:9/16;overflow:hidden;
  border-radius:var(--radius);background:#04060a;border:1px solid var(--rule);
  box-shadow:0 26px 70px -34px color-mix(in srgb,var(--c1) 70%,transparent);
}
.vid-frame > video,.vid-frame > iframe,.vid-frame > img{
  position:absolute;inset:0;width:100%;height:100%;border:0;display:block;object-fit:cover;
}
/* Click-to-load facade: a poster and a button, no YouTube code on the page
   until someone actually asks for the video. The real embed pulls ~1 MB of
   script and sets cookies, which is not something a grid visitor should pay. */
.yt-facade{position:absolute;inset:0;width:100%;padding:0;border:0;cursor:pointer;
  background:#04060a;display:block}
.yt-facade img{transition:transform .7s cubic-bezier(.2,.7,.3,1),filter .5s;filter:brightness(.78)}
.yt-facade:hover img,.yt-facade:focus-visible img{transform:scale(1.04);filter:brightness(.92)}
.yt-play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:66px;height:46px;border-radius:13px;background:rgba(214,26,26,.94);
  display:grid;place-items:center;transition:transform .3s cubic-bezier(.2,.7,.3,1),background .3s;
  box-shadow:0 10px 30px -8px rgba(0,0,0,.6);
}
.yt-facade:hover .yt-play,.yt-facade:focus-visible .yt-play{
  transform:translate(-50%,-50%) scale(1.09);background:#f00;
}
.yt-play svg{width:24px;height:24px;fill:#fff}
.yt-note{
  position:absolute;left:0;right:0;bottom:0;padding:26px 14px 11px;
  font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.14em;
  text-transform:uppercase;color:#cbd5e2;text-align:center;
  background:linear-gradient(180deg,transparent,rgba(6,8,11,.85));
}

/* ---------------------- code panel, while it loads --------------------
   The scripts are fetched per episode now instead of riding along in the
   HTML, so the panel needs a resting state for that one round trip.       */
pre.code.loading{color:var(--ink-3);min-height:170px}
pre.code .err{color:#ff8fa3}

/* --------------------------- watch on youtube -------------------------
   The one outbound action in the hero, so it is a filled button rather than
   another pill. Red rather than the site's cyan/magenta: the point is that it
   reads as YouTube at a glance, and the accent gradient is already spoken for
   by the support button further down the page.                            */
.hero-cta{
  --yt:#e0201b;
  display:inline-flex;align-items:center;gap:11px;margin-top:28px;
  font-family:Archivo,sans-serif;font-weight:600;font-size:1rem;
  color:#fff;text-decoration:none;white-space:nowrap;
  padding:12px 22px;border-radius:99px;background:var(--yt);
  box-shadow:0 16px 38px -16px rgba(224,32,27,.9);
  transition:transform .3s cubic-bezier(.2,.7,.3,1),box-shadow .3s,filter .3s;
}
.hero-cta:hover,.hero-cta:focus-visible{
  transform:translateY(-2px);filter:brightness(1.08);
  box-shadow:0 22px 50px -16px rgba(224,32,27,1);
}
.hero-cta svg{width:27px;height:19px;flex:none}
.hero-cta .yt-body{fill:#fff}
/* knocked out to the button colour, so the play triangle is the button showing
   through rather than a second red that has to be kept in sync */
.hero-cta .yt-tri{fill:var(--yt)}
.hero-cta-at{
  font-family:"IBM Plex Mono",monospace;font-weight:400;font-size:12px;
  letter-spacing:.04em;color:rgba(255,255,255,.72);
  padding-left:11px;margin-left:2px;border-left:1px solid rgba(255,255,255,.28);
}
@media(max-width:420px){
  .hero-cta{font-size:.94rem;padding:11px 18px;gap:9px}
  .hero-cta-at{display:none}      /* the logo already says whose channel it is */
}