:root{--w:1000px;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}
*{box-sizing:border-box}body{margin:0;line-height:1.7;color:#111;background:#fff}
a{color:inherit}.wrap{max-width:var(--w);margin:0 auto;padding:16px}
header{position:sticky;top:0;background:#fff;border-bottom:1px solid #eee;z-index:10}
.bar{display:flex;align-items:center;justify-content:space-between}.logo{font-weight:800}
nav a{margin-left:14px;text-decoration:none;padding:8px 10px;border-radius:8px}
nav a.active,nav a:hover{background:#111;color:#fff}
.hero{background:#f7f8fb;border:1px solid #eee;border-radius:14px;padding:24px}
.btn{display:inline-block;border:1px solid #111;padding:10px 14px;border-radius:10px;text-decoration:none;background:#111;color:#fff}
.btn:hover{background:#000;border-color:#000;color:#fff}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}
.card{border:1px solid #eee;border-radius:12px;padding:14px;background:#fafafa}
.small{font-size:.92rem;color:#666}footer{border-top:1px solid #eee;color:#666}
footer .footer-nav{display:flex;flex-wrap:wrap;gap:8px 16px;margin:12px 0 8px;padding:0}
.footer-nav a{font-weight:600;text-decoration:none;color:#111}
.footer-nav a:hover{color:#000;text-decoration:underline}
table{width:100%;border-collapse:collapse;margin:10px 0}
th,td{border:1px solid #e6e6e6;padding:8px;text-align:center}th{background:#f0f3f8}
.row{display:flex;gap:14px;flex-wrap:wrap}.row>.col{flex:1 1 320px}
.sliders label{display:block;margin-top:10px}.calc-val{margin-left:8px;font-weight:700}input[type=range]{width:100%}
.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}.hidden{display:none}pre{white-space:pre-wrap}
/* Benefit bar */
.benefit-bar .metric { text-align:center; background:#fff; }
.metric-num { font-size:26px; font-weight:800; margin-bottom:6px }

/* TL;DR */
.tldr { background:#fffdf2; border:1px solid #ffe7a3 }

/* Myth vs Reality */
.mv details summary { cursor:pointer; list-style:none }
.mv details[open] { background:#ffffff }
.mv .card { background:#fafafa }

/* Flow steps */
.flow .card { text-align:center }

/* Mini calculator */
.mini-calc .results .card { text-align:center }
.calc-num { font-size:26px; font-weight:800; margin-bottom:6px }

/* Case teasers */
.cases .case { text-decoration:none; color:inherit; display:block }
.cases .spark { width:60px; height:24px; margin-top:8px }
.cases .cost { stroke:#d9534f; fill:none; stroke-width:2 }
.cases .rev { stroke:#28a745; fill:none; stroke-width:2 }

/* Scroll story */
.story-strip { display:flex; gap:14px; overflow-x:auto; scroll-snap-type:x mandatory }
.story-step { flex:0 0 80%; min-width:220px; scroll-snap-align:center }
.story-step.active { border-color:#111; background:#fff }
@media (min-width:720px){.story-step{flex:0 0 220px}}

/* FAQ */
.faq details summary { cursor:pointer; list-style:none }

/* Works with */
.works-list { display:flex; flex-wrap:wrap; gap:8px }
.works-list .badge { color:#111; background:#fff; border:1px solid #111; border-radius:20px; padding:6px 12px; font-size:.92rem }

/* Sticky CTA */
.sticky-cta { position:fixed; right:16px; bottom:16px; display:flex; gap:8px; z-index:20 }
.sticky-cta .btn { background:#111; color:#fff; border-color:#111 }
.sticky-cta .btn:hover { background:#000 }

/* Reading progress */
#readProgress { position:fixed; top:0; left:0; height:3px; width:0; background:#0f62fe; z-index:30 }

/* Mobile nav */
.nav-toggle { display:none; border:1px solid #111; background:#fff; padding:6px 10px; border-radius:8px }
@media (max-width: 720px) {
  .bar { align-items:flex-start }
  .nav-toggle { display:block }
  header nav { display:none; width:100%; margin-top:8px }
  body.nav-open header nav { display:block }
  header nav a { display:block; margin:6px 0 0 0; padding:10px; border:1px solid #eee; border-radius:8px; word-break:break-word }
  .sticky-cta { left:16px; right:auto; bottom:12px; flex-wrap:wrap }
}