:root{
  --night:#1E1D1B;--night2:#2A2825;--brown:#3A2619;
  --paper:#E6E1D8;--paper2:#D6CFC2;--card:#EFEBE4;
  --ink:#1A1816;--mute:#6A635A;--lime:#D06A33;--grass:#9A4A1F;--tag:#C98B4E;
  --disp:"Big Shoulders Display",Impact,sans-serif;--body:"Inter Tight",system-ui,sans-serif;--mono:"JetBrains Mono",ui-monospace,monospace;
  --pad:clamp(16px,4vw,60px);
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:var(--body);font-size:18px;line-height:1.6;overflow-x:hidden}
a{color:inherit}
img{display:block;max-width:100%}
.mono{font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase}
.wrap{padding-left:var(--pad);padding-right:var(--pad)}

/* nav */
.nav{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px var(--pad);background:rgba(30,29,27,.94);color:var(--paper);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--disp);font-weight:900;font-size:22px;letter-spacing:.03em;text-transform:uppercase;line-height:1;text-decoration:none}
.logo svg{width:30px;height:30px;flex:none}
.logo small{display:block;font-family:var(--mono);font-weight:500;font-size:10px;letter-spacing:.14em;opacity:.6;margin-top:3px}
.nav ul{display:flex;gap:26px;list-style:none}
.nav ul a{font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;opacity:.75;text-decoration:none}
.nav ul a:hover{opacity:1}
.callbtn{background:var(--lime);color:#1A1816;font-weight:700;padding:10px 18px;border-radius:999px;font-size:15px;white-space:nowrap;text-decoration:none}

/* hero */
.ahero{background:var(--night);color:var(--paper);padding:60px 0 0;position:relative}
.ahero.list{padding-bottom:70px}
.crumbs{opacity:.6;margin-bottom:22px}
.crumbs a{text-decoration:none}
.crumbs a:hover{text-decoration:underline}
.ahero h1{font-family:var(--disp);font-weight:900;text-transform:uppercase;line-height:.9;font-size:clamp(42px,6.4vw,96px);max-width:16ch}
.ahero .lede{max-width:640px;margin:22px 0 18px;font-size:19px;color:rgba(230,225,216,.78)}
.ahero .mono{color:var(--lime)}
.cover{margin:40px var(--pad) 0;border-radius:14px 14px 0 0;overflow:hidden;aspect-ratio:21/9;background:var(--tag)}
.cover img{width:100%;height:100%;object-fit:cover}

/* body */
.awrap{display:grid;grid-template-columns:minmax(0,260px) minmax(0,720px);gap:60px;justify-content:center;padding:60px var(--pad) 40px}
.toc{position:sticky;top:90px;align-self:start}
.toc .mono{color:var(--grass)}
.toc summary{list-style:none;cursor:default}
.toc summary::-webkit-details-marker{display:none}
.toc ol{list-style:none;counter-reset:t;margin:14px 0 22px;border-left:2px solid var(--paper2)}
.toc li{counter-increment:t}
.toc li a{display:block;padding:6px 0 6px 14px;font-size:14.5px;line-height:1.35;color:var(--mute);text-decoration:none}
.toc li a:hover{color:var(--ink)}
.prose>.intro{font-size:21px;line-height:1.55;font-weight:500;margin-bottom:28px}
.prose h2{font-family:var(--disp);font-weight:900;text-transform:uppercase;font-size:clamp(30px,3.4vw,44px);line-height:.95;margin:48px 0 16px;scroll-margin-top:90px}
.prose h3{font-size:20px;margin:28px 0 8px}
.prose p{margin:0 0 16px}
.prose ul,.prose ol{margin:0 0 18px 22px}
.prose li{margin-bottom:6px}
.prose ul.checklist{list-style:none;margin-left:0}
.prose ul.checklist li{position:relative;padding-left:30px}
.prose ul.checklist li::before{content:"";position:absolute;left:0;top:.45em;width:16px;height:16px;border-radius:4px;background:var(--lime)}
.prose a{color:var(--grass);text-decoration-thickness:1.5px;text-underline-offset:3px}
.prose strong{font-weight:700}
.prose table{width:100%;border-collapse:collapse;margin:8px 0 24px;font-size:16px;background:var(--card);border-radius:10px;overflow:hidden}
.prose th,.prose td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--paper2);vertical-align:top}
.prose th{background:var(--night);color:var(--paper);font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;font-weight:500}
.prose .callout{background:var(--brown);color:var(--paper);border-radius:12px;padding:20px 22px;margin:24px 0}
.prose .callout b{display:block;font-family:var(--disp);font-weight:900;text-transform:uppercase;font-size:24px;color:var(--lime);margin-bottom:6px}
.faq details{border-top:1.5px solid var(--ink);padding:16px 0}
.faq details:last-child{border-bottom:1.5px solid var(--ink)}
.faq summary{cursor:pointer;font-weight:700;font-size:19px;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::after{content:"+";font-size:24px;line-height:1;transition:transform .3s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{margin:10px 0 0;color:var(--mute)}

/* cards */
.related{padding:20px var(--pad) 80px}
.related .mono,.listwrap .mono{color:var(--grass)}
.agrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:18px}
.acard{display:flex;flex-direction:column;background:var(--card);border:1.5px solid var(--ink);border-radius:12px;overflow:hidden;text-decoration:none;transition:transform .25s,box-shadow .25s}
.acard:hover{transform:translateY(-4px);box-shadow:6px 6px 0 var(--ink)}
.acard .ph{aspect-ratio:16/10;background:var(--tag);overflow:hidden}
.acard .ph img{width:100%;height:100%;object-fit:cover;filter:grayscale(1) contrast(1.1);mix-blend-mode:multiply;transition:filter .5s}
.acard:hover .ph img{filter:none;mix-blend-mode:normal}
.acard .meta{padding:16px 18px 0;color:var(--grass)}
.acard b{padding:6px 18px 0;font-family:var(--disp);font-weight:900;text-transform:uppercase;font-size:26px;line-height:.98}
.acard .d{padding:8px 18px 18px;font-size:14.5px;color:var(--mute);line-height:1.45}
.listwrap{padding-top:40px;padding-bottom:80px}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{font:inherit;font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;padding:9px 14px;border-radius:999px;border:1.5px solid rgba(26,24,22,.25);background:none;cursor:pointer}
.chip.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}

/* cta + footer */
.cta{background:var(--brown);color:var(--paper);padding:70px 0}
.cta .mono{color:var(--lime)}
.cta h2{font-family:var(--disp);font-weight:900;text-transform:uppercase;font-size:clamp(40px,5.6vw,80px);line-height:.9;margin:12px 0 14px}
.cta p{max-width:560px;color:rgba(230,225,216,.78)}
.row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.btn{display:inline-flex;align-items:center;gap:10px;padding:15px 24px;border-radius:999px;font-weight:700;font-size:16px;text-decoration:none;transition:transform .2s}
.btn:hover{transform:translateY(-2px)}
.btn.lime{background:var(--lime);color:#1A1816}
.btn.ghost{border:1.5px solid rgba(230,225,216,.35);color:var(--paper)}
.btn.sm{padding:11px 16px;font-size:14px}
.foot{background:var(--night);color:rgba(230,225,216,.55);padding:26px var(--pad);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase}
.foot a{text-decoration:none}
.wafloat{position:fixed;right:18px;bottom:18px;z-index:60;width:58px;height:58px;border-radius:50%;background:#25D366;color:#fff;display:grid;place-items:center;box-shadow:0 10px 30px rgba(0,0,0,.3)}
.wafloat svg{width:30px;height:30px}

@media (max-width:980px){
  .awrap{grid-template-columns:1fr;gap:20px}
  .toc{position:static}
  .agrid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .nav ul{display:none}
}
@media (max-width:640px){
  body{font-size:17px}
  .agrid{grid-template-columns:1fr}
  .cover{aspect-ratio:4/3;margin:28px 0 0;border-radius:0}
  .logo{font-size:16px;white-space:nowrap}
  .logo small{display:none}
  .toc details{border:1.5px solid var(--paper2);border-radius:10px;padding:12px 14px}
  .toc summary{cursor:pointer}
  .toc summary::after{content:" ▾"}
  .toc ol{margin-bottom:6px}
  .toc .btn{display:none}
  .callbtn{padding:9px 12px;font-size:14px}
  .prose table{display:block;overflow-x:auto}
}