/* ProTGen StoryLab — Primer article. Imports design tokens. */
@import url('assets/colors_and_type.css');

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font-sans);background:var(--bone);color:var(--fg-1);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}

/* top bar */
.pr-top{position:sticky;top:0;z-index:40;background:rgba(247,242,232,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--bone-300);height:60px;display:flex;align-items:center;justify-content:space-between;padding:0 32px}
.pr-back{display:inline-flex;align-items:center;gap:9px;font-size:14px;font-weight:600;color:var(--fg-2);cursor:pointer}
.pr-back:hover{color:var(--teal)}
.pr-back svg{width:16px;height:16px}
.pr-brand{display:inline-flex;align-items:center;gap:9px}
.pr-brand .w{font-weight:600;font-size:15px;letter-spacing:-.01em}
.pr-brand .sub{font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--teal)}
.pr-progress{position:fixed;top:60px;left:0;height:2px;background:var(--teal);z-index:41;transition:width .1s linear}

/* header */
.pr-header{max-width:760px;margin:0 auto;padding:64px 32px 28px}
.pr-eyebrow{display:inline-flex;align-items:center;gap:12px;font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;font-weight:500;color:var(--teal);margin-bottom:22px}
.pr-eyebrow::before{content:"";width:24px;height:2px;background:currentColor}
.pr-title{font-size:48px;font-weight:600;letter-spacing:-.022em;line-height:1.08;margin:0 0 20px;text-wrap:balance}
.pr-dek{font-family:var(--font-serif);font-size:23px;line-height:1.4;color:var(--fg-2);margin:0 0 26px;font-weight:400}
.pr-meta{display:flex;gap:18px;flex-wrap:wrap;align-items:center;font-family:var(--font-mono);font-size:12.5px;letter-spacing:.04em;color:var(--slate);border-top:1px solid var(--bone-200);padding-top:22px}
.pr-meta .dot{width:3px;height:3px;border-radius:999px;background:var(--slate-300)}

/* voiceover / podcast module */
.pr-listen{max-width:760px;margin:8px auto 0;padding:0 32px;scroll-margin-top:80px}
.pr-ep{background:var(--ink);border-radius:16px;padding:26px 30px;color:var(--bone);position:relative;overflow:hidden}
.pr-ep-grad{position:absolute;inset:0;background:radial-gradient(120% 100% at 90% 0%,rgba(70,202,211,.16),transparent 56%);pointer-events:none}
.pr-ep-row{position:relative;display:flex;align-items:center;gap:22px}
.pr-cover{width:84px;height:84px;border-radius:12px;background:var(--grad-restoration);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.pr-ep-meta{flex:1;min-width:0}
.pr-ep-tag{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--cyan);margin-bottom:7px}
.pr-ep-meta h3{font-size:19px;font-weight:600;letter-spacing:-.01em;margin:0 0 5px;color:var(--bone)}
.pr-ep-meta p{font-size:13.5px;color:var(--fg-on-dark-2);margin:0}
.pr-play{flex-shrink:0;width:54px;height:54px;border-radius:999px;border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.08);color:var(--bone);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--dur-fast)}
.pr-play:hover{background:var(--cyan);border-color:var(--cyan);color:var(--ink)}
.pr-wave{position:relative;display:flex;align-items:flex-end;gap:3px;height:34px;margin-top:20px}
.pr-wave span{flex:1;background:rgba(255,255,255,.18);border-radius:2px;min-width:2px}
.pr-wave span.on{background:var(--cyan)}
.pr-player-area{position:relative}
.pr-transistor{display:block;margin-top:18px;border:0;border-radius:10px;overflow:hidden;background:#fff;box-shadow:var(--shadow-dark)}
.pr-play.is-loaded{opacity:.45;cursor:default}
.pr-play.is-loaded:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.2);color:var(--bone)}
.pr-ep-foot{position:relative;display:flex;justify-content:space-between;align-items:center;margin-top:16px;font-family:var(--font-mono);font-size:12px;color:var(--fg-on-dark-3);letter-spacing:.03em}

/* layout: ToC + article */
.pr-layout{max-width:1080px;margin:0 auto;padding:48px 32px 120px;display:grid;grid-template-columns:240px 1fr;gap:56px;align-items:start}
.pr-toc{position:sticky;top:96px}
.pr-toc-h{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--slate);margin-bottom:16px;display:flex;align-items:center;gap:9px}
.pr-toc-h svg{width:15px;height:15px;color:var(--teal)}
.pr-toc ul{list-style:none;margin:0;padding:0;border-left:1px solid var(--bone-300)}
.pr-toc li a{display:block;padding:8px 0 8px 16px;font-size:13.5px;line-height:1.4;color:var(--fg-3);border-left:2px solid transparent;margin-left:-1px;cursor:pointer;transition:color var(--dur-fast),border-color var(--dur-fast)}
.pr-toc li a:hover{color:var(--fg-1)}
.pr-toc li a.active{color:var(--teal);border-left-color:var(--teal);font-weight:600}

.pr-article{max-width:68ch}
.pr-article .lede{font-size:21px;line-height:1.6;color:var(--fg-1);margin:0 0 32px}
.pr-article h2{font-size:29px;font-weight:600;letter-spacing:-.018em;line-height:1.18;margin:52px 0 18px;scroll-margin-top:90px;text-wrap:balance}
.pr-article h2:first-of-type{margin-top:8px}
.pr-article p{font-size:18px;line-height:1.72;color:var(--fg-2);margin:0 0 20px}
.pr-article p strong,.pr-article p b{color:var(--fg-1);font-weight:600}
.pr-article .pull{font-family:var(--font-serif);font-size:25px;line-height:1.36;color:var(--fg-1);border-left:3px solid var(--teal);padding:4px 0 4px 26px;margin:36px 0}
.pr-article .retell{background:var(--bone-100);border:1px solid var(--bone-200);border-radius:13px;padding:26px 30px;margin:32px 0;box-shadow:var(--shadow-sm)}
.pr-article .retell .rt-lbl{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--teal);margin-bottom:12px}
.pr-article .retell p{font-family:var(--font-serif);font-size:21px;line-height:1.5;color:var(--fg-1);margin:0}
.pr-article .ref{font-family:var(--font-mono);font-size:11px;color:var(--teal);vertical-align:super;padding:0 2px;cursor:help}
.pr-answer{background:var(--ink);border-radius:16px;padding:40px 44px;color:var(--bone);margin:48px 0 0;position:relative;overflow:hidden}
.pr-answer-grad{position:absolute;inset:0;background:radial-gradient(120% 100% at 10% 100%,rgba(15,124,128,.4),transparent 60%);pointer-events:none}
.pr-answer .pa-lbl{position:relative;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan);margin-bottom:16px}
.pr-answer p{position:relative;font-size:21px;line-height:1.55;color:var(--bone);margin:0 0 16px}
.pr-answer .pa-kicker{position:relative;font-family:var(--font-serif);font-size:25px;line-height:1.4;color:var(--cyan);margin:8px 0 0}

.pr-sources{max-width:68ch;margin:40px 0 0;padding-top:24px;border-top:1px solid var(--bone-200)}
.pr-sources h4{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--slate);margin:0 0 12px}
.pr-sources p{font-size:13.5px;line-height:1.6;color:var(--fg-3);margin:0 0 8px}
.pr-foot-nav{max-width:68ch;margin:40px 0 0;display:flex;gap:14px;flex-wrap:wrap}
.pr-btn{font-size:14px;font-weight:600;border-radius:9px;padding:12px 20px;border:1px solid var(--bone-300);background:var(--bone-100);color:var(--fg-1);cursor:pointer;display:inline-flex;align-items:center;gap:9px;transition:all var(--dur-fast)}
.pr-btn:hover{border-color:var(--teal)}
.pr-btn.primary{background:var(--teal);border-color:var(--teal);color:#fff}
.pr-btn.primary:hover{background:var(--teal-600)}
.pr-btn svg{width:16px;height:16px}

@media (max-width:920px){
  .pr-layout{grid-template-columns:1fr;gap:0}
  .pr-toc{position:static;margin-bottom:36px;border-bottom:1px solid var(--bone-200);padding-bottom:24px}
  .pr-toc ul{display:flex;flex-wrap:wrap;gap:4px 0;border-left:none}
  .pr-toc li a{border-left:none;padding:6px 14px 6px 0}
  .pr-toc li a.active{border-left:none}
  .pr-title{font-size:34px}
  .pr-article{max-width:none}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition-duration:.01ms!important}}