:root{
  --bg:#f6f1e7;--bg2:#efe8da;--card:#fffdf7;--fg:#1c1a16;--muted:#6f675b;
  --line:#e4dcca;--code:#f0e9da;--accent:#cc785c;--link:#9a4a28;
  --research:#1f403b;--news:#7a3423;--blog:#2d3460;
  --ink:#1c1a16;--cream:#f4efe6;
  --radius:16px;
  --shadow:0 1px 2px rgba(28,26,22,.05),0 6px 20px rgba(28,26,22,.07);
  --shadow-lift:0 2px 4px rgba(28,26,22,.07),0 14px 34px rgba(28,26,22,.13);
}
@media(prefers-color-scheme:dark){
  :root{
    --bg:#161310;--bg2:#1c1814;--card:#211d17;--fg:#ede6d7;--muted:#a79d8b;
    --line:#352e26;--code:#2b261e;--accent:#cc785c;--link:#e69b76;
    --shadow:0 1px 2px rgba(0,0,0,.3),0 6px 20px rgba(0,0,0,.35);
    --shadow-lift:0 2px 4px rgba(0,0,0,.4),0 14px 34px rgba(0,0,0,.5);
  }
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font:16px/1.6 "Space Grotesk",-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;background:var(--bg);color:var(--fg)}
img{max-width:100%}
a{color:var(--link)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.wrap{max-width:1100px;margin:0 auto;padding:0 clamp(1rem,4vw,2rem)}

/* ---- hero (index) ---- */
.hero{background:var(--ink);color:var(--cream);position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;background:
  radial-gradient(640px 320px at 88% -12%,rgba(204,120,92,.38),transparent 62%),
  radial-gradient(560px 300px at -6% 112%,rgba(45,52,96,.55),transparent 60%),
  radial-gradient(420px 240px at 40% 130%,rgba(31,64,59,.4),transparent 65%)}
.hero .wrap{position:relative;display:grid;grid-template-columns:auto 1fr;gap:clamp(1.4rem,3.5vw,2.6rem);align-items:center;padding-top:clamp(2rem,5vw,3.4rem);padding-bottom:clamp(1.8rem,4.5vw,3rem)}
.hero .cover{width:clamp(128px,17vw,196px);aspect-ratio:1;border-radius:22px;display:block;
  box-shadow:0 16px 44px rgba(0,0,0,.5);border:1px solid rgba(244,239,230,.16)}
.hero .kicker{margin:0 0 .55rem;font-size:.76rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
.hero h1{margin:0 0 .5rem;font-size:clamp(1.9rem,4.6vw,3.1rem);line-height:1.04;letter-spacing:-.025em;font-weight:700}
.hero .tag{margin:0;max-width:56ch;color:rgba(244,239,230,.78);font-size:clamp(.95rem,1.6vw,1.05rem)}
.sub-row{display:flex;flex-wrap:wrap;gap:.55rem;margin-top:1.25rem}
.btn{display:inline-flex;align-items:center;gap:.4rem;padding:.52rem 1rem;border-radius:999px;font-size:.88rem;font-weight:500;
  text-decoration:none;color:var(--cream);background:rgba(244,239,230,.08);border:1px solid rgba(244,239,230,.28);
  cursor:pointer;font-family:inherit;transition:background .18s ease,transform .18s ease}
.btn:hover{background:rgba(244,239,230,.18);transform:translateY(-1px)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--ink);font-weight:700}
.btn.primary:hover{background:#d8896d}
.feed-line{margin:1rem 0 0;font-size:.8rem;color:rgba(244,239,230,.62)}
.feed-line code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.78rem;
  background:rgba(244,239,230,.1);border:1px solid rgba(244,239,230,.14);padding:.14rem .45rem;border-radius:6px;word-break:break-all;color:rgba(244,239,230,.85)}
.feed-line a{color:rgba(244,239,230,.85)}

/* ---- top nav (inner pages) ---- */
.topnav{position:sticky;top:0;z-index:20;background:var(--bg);background:color-mix(in srgb,var(--bg) 86%,transparent);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.topnav .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding-top:.72rem;padding-bottom:.72rem}
.brand{display:inline-flex;align-items:center;gap:.6rem;font-weight:700;letter-spacing:-.01em;text-decoration:none;color:inherit}
.brand img{width:30px;height:30px;border-radius:8px}
.topnav .back{font-size:.88rem;text-decoration:none;color:var(--muted)}
.topnav .back:hover{color:var(--link)}

/* ---- index sections ---- */
main{padding:0 0 4.5rem}
.section-head{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin:2.6rem 0 1.1rem}
.sec{margin:0;font-size:.82rem;font-weight:700;text-transform:uppercase;letter-spacing:.15em;color:var(--muted)}
.filter{display:flex;gap:.4rem;flex-wrap:wrap}
.filter button{font:inherit;font-size:.82rem;padding:.34rem .85rem;border-radius:999px;border:1px solid var(--line);
  background:var(--card);color:var(--muted);cursor:pointer;transition:all .15s ease}
.filter button:hover{border-color:var(--accent);color:var(--link)}
.filter button[aria-pressed="true"]{background:var(--fg);color:var(--bg);border-color:var(--fg)}
.idx-tools{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap}
.search{font:inherit;font-size:.85rem;padding:.38rem .95rem;border-radius:999px;border:1px solid var(--line);
  background:var(--card);color:var(--fg);min-width:200px}
.search::placeholder{color:var(--muted)}
.stats{margin:.3rem 0 0;font-size:.82rem;color:var(--muted)}
.no-results{color:var(--muted);font-size:.95rem;margin:1.2rem 0}

.badge{display:inline-block;font-size:.66rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;
  padding:.2rem .6rem;border-radius:999px;color:var(--cream);background:#555}
.badge.research{background:var(--research)}.badge.news{background:var(--news)}.badge.claude-blog{background:var(--blog)}
.meta{color:var(--muted);font-size:.82rem}

.feature{display:grid;grid-template-columns:minmax(220px,330px) 1fr;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.feature-art{display:block;background:var(--bg2)}
.feature-art img{display:block;width:100%;height:100%;object-fit:cover;aspect-ratio:1}
.feature-body{padding:clamp(1.2rem,2.6vw,1.9rem);display:flex;flex-direction:column;justify-content:center;gap:.55rem;min-width:0}
.feature .row{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap}
.feature h2{margin:0;font-size:clamp(1.3rem,2.6vw,1.75rem);line-height:1.18;letter-spacing:-.015em}
.feature h2 a{color:inherit;text-decoration:none}
.feature h2 a:hover{color:var(--link)}
.feature .sub{margin:0;color:var(--muted);font-size:.95rem}
.feature audio{width:100%;margin:.35rem 0 0}
.feature .more{font-size:.86rem}

.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(252px,1fr));gap:1.3rem}
.card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;text-decoration:none;color:inherit;box-shadow:0 1px 2px rgba(28,26,22,.05);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);border-color:var(--accent)}
.card img{width:100%;aspect-ratio:1;object-fit:cover;display:block;background:var(--bg2)}
.card .body{padding:1rem 1.1rem 1.15rem;display:flex;flex-direction:column;gap:.42rem}
.card .row{display:flex;align-items:center;gap:.55rem;flex-wrap:wrap}
.card h3{margin:0;font-size:1.05rem;line-height:1.32;letter-spacing:-.01em}
.card .sub{margin:0;color:var(--muted);font-size:.86rem;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---- episode page ---- */
.ep-head{display:grid;grid-template-columns:minmax(230px,330px) 1fr;gap:clamp(1.5rem,3.5vw,2.6rem);align-items:start;margin:2.4rem 0 1.6rem}
.ep-art{width:100%;border-radius:var(--radius);display:block;box-shadow:var(--shadow-lift);border:1px solid var(--line)}
.ep-info .row{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap;margin-bottom:.7rem}
h1.ep-title{margin:.1rem 0 .5rem;font-size:clamp(1.55rem,3.4vw,2.35rem);line-height:1.12;letter-spacing:-.022em}
.ep-sub{margin:0 0 .4rem;color:var(--muted);font-size:1.02rem}
.player{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:.95rem 1.05rem .8rem;box-shadow:var(--shadow);margin:1.1rem 0 .9rem}
.player .plabel{display:flex;justify-content:space-between;align-items:baseline;gap:1rem;margin:0 .1rem .45rem;
  font-size:.72rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.player .plabel .dur{letter-spacing:.02em}
audio{width:100%;display:block}

/* ---- custom player (progressive enhancement over the native <audio>) ---- */
.player.enhanced>audio{display:none}
.p-main{display:flex;align-items:center;gap:.9rem;margin-top:.2rem}
.p-play{flex:none;width:54px;height:54px;border-radius:50%;border:none;background:var(--accent);color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;padding:0;
  box-shadow:0 2px 8px rgba(204,120,92,.35);transition:transform .15s ease,background .15s ease}
.p-play:hover{background:#d8896d;transform:scale(1.06)}
.p-play svg{width:24px;height:24px;fill:currentColor;display:block}
.p-right{flex:1;min-width:0}
.p-bar{position:relative;height:24px;cursor:pointer;touch-action:none}
.p-bar::before{content:"";position:absolute;left:0;right:0;top:50%;height:6px;transform:translateY(-50%);border-radius:999px;background:var(--line)}
.p-buf,.p-fill{position:absolute;left:0;top:50%;height:6px;max-width:100%;transform:translateY(-50%);border-radius:999px;pointer-events:none}
.p-buf{background:color-mix(in srgb,var(--muted) 28%,transparent)}
.p-fill{background:var(--accent)}
.p-knob{position:absolute;top:50%;left:0;width:14px;height:14px;border-radius:50%;background:var(--accent);
  border:2px solid var(--card);box-shadow:0 1px 4px rgba(0,0,0,.35);transform:translate(-50%,-50%);pointer-events:none}
.p-times{display:flex;justify-content:space-between;align-items:baseline;gap:.8rem;margin-top:.1rem;
  font-size:.78rem;color:var(--muted);font-variant-numeric:tabular-nums}
.p-chap{flex:1;min-width:0;text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--fg);font-weight:500}
.p-ctl{display:flex;justify-content:center;align-items:center;gap:.45rem;margin-top:.6rem;flex-wrap:wrap}
.p-ctl button{font:inherit;font-size:.78rem;font-weight:600;padding:.34rem .72rem;border-radius:999px;border:1px solid var(--line);
  background:var(--card);color:var(--fg);cursor:pointer;font-variant-numeric:tabular-nums;transition:border-color .15s ease,color .15s ease}
.p-ctl button:hover{border-color:var(--accent);color:var(--link)}
.p-rate{min-width:4.6em}
.p-resume{margin:.6rem .1rem 0;font-size:.8rem;color:var(--muted)}
.p-resume button{font:inherit;font-size:.8rem;border:none;background:none;padding:0;color:var(--link);cursor:pointer;text-decoration:underline}

/* ---- chapters ---- */
.chapters{background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);margin:0 0 .9rem;padding:.85rem 1.05rem .55rem}
.chapters .c-h{margin:0 0 .35rem;font-size:.72rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.chapters ol{list-style:none;margin:0;padding:0}
.chapters li{border-top:1px solid var(--line)}
.chapters li:first-child{border-top:none}
.chapters li button{display:flex;align-items:baseline;gap:.75rem;width:100%;text-align:left;font:inherit;font-size:.9rem;
  padding:.44rem .15rem;border:none;background:none;color:var(--fg);cursor:pointer}
.chapters .c-t{flex:none;min-width:3.4em;font-size:.78rem;color:var(--muted);font-variant-numeric:tabular-nums}
.chapters li button:hover .c-n{color:var(--link)}
.chapters li button.now .c-n{color:var(--link);font-weight:700}
.chapters li button.now .c-t{color:var(--accent);font-weight:700}
.actions{display:flex;flex-wrap:wrap;gap:.5rem;margin:.9rem 0 0}
.chip{font-size:.83rem;padding:.42rem .9rem;border-radius:999px;border:1px solid var(--line);background:var(--card);
  text-decoration:none;color:var(--fg);transition:border-color .15s ease,color .15s ease}
.chip:hover{border-color:var(--accent);color:var(--link)}

.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 1px 2px rgba(28,26,22,.05);margin:1.3rem 0}
div.panel{padding:1.35rem 1.6rem}
details.panel>summary{padding:1.05rem 1.6rem;cursor:pointer;font-weight:700;font-size:1rem;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:1rem}
details.panel>summary::-webkit-details-marker{display:none}
details.panel>summary::after{content:"+";font-size:1.35rem;font-weight:500;line-height:1;color:var(--accent);transition:transform .2s ease}
details.panel[open]>summary::after{transform:rotate(45deg)}
details.panel>.inner{padding:1.1rem 1.6rem 1.5rem;border-top:1px solid var(--line)}
.panel h2:first-child{margin-top:0}
.panel h2{font-size:1.05rem;letter-spacing:-.01em}
.notes ul{padding-left:1.25rem}
.notes li{margin:.3rem 0}
.tr-out{white-space:pre-wrap;font-size:.98rem;line-height:1.7;margin:0}
.tr-body{position:relative;max-height:min(62vh,540px);overflow-y:auto;padding-right:.4rem;overscroll-behavior:contain;scroll-behavior:smooth}
.tr-body p{margin:0 0 1.05em;font-size:.98rem;line-height:1.72}
.cue{cursor:pointer;border-radius:4px;padding:.04em .1em;transition:background .15s ease}
.cue:hover,.cue:focus-visible{background:var(--code)}
.cue.now{background:color-mix(in srgb,var(--accent) 30%,transparent)}

/* ---- long-form post copy: editorial serif ---- */
article.post{font-family:"Source Serif 4",Georgia,"Times New Roman",serif;font-size:1.07rem;line-height:1.75}
article.post h2,article.post h3,article.post h4{font-family:"Space Grotesk",-apple-system,sans-serif;letter-spacing:-.01em;line-height:1.25;margin:1.9em 0 .6em}
article.post img{max-width:100%;height:auto;border-radius:10px}
article.post figure{margin:1.7rem 0}
article.post figcaption{font-family:"Space Grotesk",sans-serif;font-size:.85rem;color:var(--muted);margin-top:.5rem}
article.post pre{background:var(--code);border:1px solid var(--line);padding:1rem;border-radius:10px;overflow-x:auto;font-size:.84rem;line-height:1.55}
article.post code{background:var(--code);padding:.1rem .3rem;border-radius:4px;font-size:.88em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
article.post pre code{background:none;padding:0}
article.post blockquote{border-left:3px solid var(--accent);margin:1.2rem 0;padding:.2rem 1.1rem;color:var(--muted)}
article.post table{border-collapse:collapse;width:100%;font-size:.9rem;overflow-x:auto;display:block}
article.post td,article.post th{border:1px solid var(--line);padding:.45rem .65rem;vertical-align:top;text-align:left}
article.post a{color:var(--link)}

footer{border-top:1px solid var(--line);color:var(--muted);font-size:.84rem;margin-top:3rem}
footer .wrap{padding-top:1.6rem;padding-bottom:2.4rem}
.small{font-size:.85rem}

@media(max-width:720px){
  .hero .wrap{grid-template-columns:1fr;text-align:left;gap:1.2rem}
  .hero .cover{width:132px}
  .feature{grid-template-columns:1fr}
  .ep-head{grid-template-columns:1fr}
  .ep-art{max-width:330px}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}